Note: Descriptions are shown in the official language in which they were submitted.
CA 2746780 2017-05-31
Window Covering Sizing Method and Apparatus
Background
It will be appreciated that window coverings come in a variety of materials
including wood, plastic, fabric, vinyl and aluminum and a variety of styles
including horizontal blinds, vertical blinds, woven shades, pleated shades,
Roman shades and cellular blinds. Window coverings are sold as stock, custom
and cut-to-size or size-in-store. Stock window coverings are manufactured in a
variety of standard widths that are intended to fit corresponding standard
window
sizes. Custom window coverings are manufactured to specified dimensions per
a customer's specific request. Cut-to-size or size-in-store window coverings
are
manufactured in a limited number of sizes that are intended to be used with a
wide range of window sizes. A cutting machine is provided at the retail outlet
that
cuts the window covering from the manufactured or stock size to the customer's
desired size. The cutting machine is operated by the retail outlet personnel.
Operator error is possible because the process requires accuracy in both the
measurement and alignment of the blind in the machine. Further, even if the
blinds are cut correctly the process consumes valuable personnel time.
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Summary
An apparatus for cutting a window covering comprises a lateral support surface
and a first saw for cutting the window covering positioned at a first end of
the
lateral support surface and a second saw for cutting the window covering
positioned at a second end of the lateral support surface. An engagement
member locates the center of the window covering that is retractably mounted
on
the lateral support surface. A clamp assembly comprises a clamping jaw that is
movable to a first position where the clamping jaw presses the window covering
against the lateral support surface. The clamp assembly is movable relative to
the first saw and the second saw. A controller for moves the clamp assembly to
automatically position a first end of the window covering relative to the
first saw
and a second end of the window covering relative to the second saw.
The engagement member may be movable between an extend position where it
projects beyond the lateral surface and a retracted position where it is
disposed
behind the lateral surface. The lateral support surface may be mounted on a
drawer movable between a first open position and a second closed position. The
engagement member may comprise a pin that engages a mating hole on the
window covering. A platform may support the window covering where the
platform is located in the drawer. The clamp assembly may be mounted for
movement with the drawer. The lateral support surface may comprise a plurality
of rollers. The first and second saws may reciprocate to cut the window
covering. A first clamp and second clamp may be located adjacent the first saw
and the second saw for holding the window covering when the saws cut the
window covering. The clamp assembly may be mounted on a carriage that is
reciprocated to move the window covering. A user interface may be used to
input data to the controller. The window covering may comprise a package such
that the package is cut by the first saw and the second saw. The window
covering may comprise a box where the window covering extends from the box.
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The engagement member may engage a hole formed on the box. Product
identification information in the form of a bar code may be associated with
the
window covering.
A method of cutting a window covering comprises providing a surface in a
drawer
that is movable between an open position and a closed position; moving the
drawer to the open position; locating a window covering in a known position
relative to the surface when the drawer is in the open position; moving the
drawer
to the closed position; clamping the window covering in the known position
against the surface; receiving a desired size of the window covering;
determining
a distance the known position of the window covering must be positioned from a
saw to obtain the desired size of the window covering; automatically moving
the
window covering such that the known position of the window covering is
positioned the distance from the saw; and engaging the window covering with
the
saw.
The method may include receiving a type of window covering. The method may
include receiving mount information of the window covering. The method may
include deducting a predetermined length from the desired size based on the
mount information. The step of determining may include dividing the desired
size
by two to obtain a half length. The method may comprise reading a bar code
provided on the window covering. The method may comprise providing a range
of sizes that are valid for the type of window covering and comparing the
desired
size to the range of valid sizes. The step of locating may comprise locating
the
window covering relative to an engagement member that extends from the
surface. Prior to the step of automatically moving the clamp assembly, the
engagement member may be retracted.
A dust collection system for cutting a window covering comprises a first saw
having a saw blade for cutting the window blind. A clamp assembly moves the
window covering relative to the first and second saw. A controller moves the
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clamp assembly to automatically position a first end of the window covering
relative to the saw. A shroud substantially surrounds the bottom of the saw
blade
where the shroud is connected to a vortex dust collector.
A saw chamber and a dust collection plenum in the saw chamber may be
provided for drawing the dust and debris from the saw chambers. The dust
collection plenum may be connected to the vortex dust collector. The vortex
dust
collector may separate the heavy debris from the fine dust. The vortex dust
collector may pull heavy debris from the vacuum stream and collect it in a
large
collection bucket. Fines may be drawn from the vortex dust collector and
captured in a dust collection bag where they are collected. The dust
collection
bag may be separated from electrical equipment. A blast gate may control the
flow of air through the system and control dust collection from the shroud. A
first
smooth bore duct may connect the shroud to the vortex dust collector and a
second smooth bore duct may connect the vortex dust collector to the dust
collection bag. The air flow rate in the dust collection system may be at
least
2500 feet per minute. An air hose may deliver a high pressure flow of air to
the
window covering. A smoke detector system may provide an alarm if smoke is
detected. A fire detector system may provide an alarm if a fire is detected.
A method and apparatus for cutting a vertical window covering are disclosed.
One method of operating a window covering cutting machine comprises retaining
a window covering in a package such that a first end of the window covering is
located at a known first position relative to the package; providing an
engagement element on the package that is located at a known second position
on the package; automatically moving the engagement element a distance from
a saw to obtain a final dimension of the window covering where the distance is
calculated using the first position and the second position.
The first position may a distance C from a first end of the package. The
second
position may be spaced a known distance Z from the first end of the package.
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The distance C and the distance Z may be obtained from a look-up table. The
look-up table may be accessed using a bar code that identifies a type of
window
covering. The distance may be calculated according to the following equation:
final dimension - Z + C. The engagement element may be a hole. A drawer
having a surface and being movable between an open position and a closed
position may be provided. The drawer may be moved between an open position
and a closed position. When the drawer is in the open position, the window
covering may be located in the drawer with the engagement element in a known
position relative to the surface. The final dimension of the window covering
may
be received. The window covering may be moved such that the known second
position of the window covering is positioned the distance from the saw. The
window covering may be engaged by a saw. The step of locating may comprise
locating the window covering relative to a second engagement member that
extends from the surface. Prior to the step of automatically moving, said
second
engagement member may be retracted. The window covering in the drawer may
be allowed to extend off one end of the drawer. The window covering may be
identified as a head rail or a vane. The window covering and the package may
be cut simultaneously. The step of automatically moving may use an iterative
process.
An apparatus for cutting a window covering comprises a lateral support surface
and a saw for cutting the window covering positioned at a first end of the
lateral
support surface. An engagement member locates the window covering and is
retractably mounted on the lateral support surface at a location offset from
the
center of the lateral support surface. A clamp assembly comprises a clamping
jaw movable to press the window covering against the lateral support surface.
The clamp assembly is movable relative to the saw. A controller moves the
clamp assembly to automatically position a first end of the window covering
relative to the saw.
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The engagement member may be movable between an extend position where it
projects beyond the lateral surface and a retracted position where it is
disposed
behind the lateral surface. The lateral support surface may be mounted on a
drawer movable between a first open position and a second closed position.
The engagement member may comprise a pin that engages a mating hole where
the hole is offset from a longitudinal center of the window covering. A
platform
may support the window covering in the drawer. The clamp assembly may be
mounted for movement with the drawer. The lateral support surface may
comprise a plurality of rollers. A clamp may be located adjacent the saw for
holding the window covering when the saw cuts the window covering. Product
identification information in the form of a bar code may be associated with
the
window covering.
An apparatus for cutting a window covering comprises a saw for cutting the
window blind. A clamp assembly moves the window covering relative to the saw.
A controller moves the clamp assembly to automatically position an end of the
window covering relative to the saw. The saw is moved into engagement with
the window covering to cut the window covering. Methods of cutting a window
covering are also disclosed.
A method of operating a window covering cutting machine comprises a)
packaging a window covering comprising components in a package such that
first ends of the components extend beyond a first end of the package and
second ends of the components extend beyond a second end of the package; b)
automatically moving the package and components in a first direction of travel
against a first squaring surface such that the first ends of the components
are in
a common plane; c) cutting the first ends of the components; d) automatically
moving the package and components in a second direction of travel against a
second squaring surface such that the second ends of the components are in a
common plane; and e) cutting the second ends of the components.
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The method may further comprise, prior to step b), automatically moving the
package and components against a squaring plate such that the second ends of
the components are in a common plane. The first and second squaring surfaces
may be arranged such that they are perpendicular to the directions of travel.
The
first and second squaring surfaces may be the faces of saw blades. The
squaring surfaces may be moved between a first position where the squaring
surfaces intersect the directions of travel and a second position where the
squaring surfaces do not intersect the directions of travel. The squaring
surfaces
may be retracted and the window covering moved in front of the saws. The saws
may be rotated at high speed and moved into engagement with the components.
A valance may be placed in the package where the valance has a first end and a
second end and is longer than the components. The valance is moved relative to
the window covering by the squaring surfaces until the first end of the
valance
and the first ends of the components are coplanar. A clamp may be extended to
hold the window covering when the saws are moved into engagement with the
components.
Brief Description of the Drawings
Fig. 1 is a perspective view of an embodiment of the SIS machine of the
invention.
Fig. 2 is a perspective back view of the embodiment of the SIS machine of Fig.
1.
Figs. 3 and 4 are perspective views of a saw used in the SIS machine of Fig.
1.
Fig. 5 is a perspective view showing details of the SIS machine of Fig. 1.
Figs. 6 and 7 are perspective back views of the embodiment of the SIS machine
of Fig. 1 with the outer casing removed.
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Fig. 8 is a back view of the embodiment of the SIS machine of Fig. 1 with the
outer casing removed.
Fig. 9 is a bottom view of the embodiment of the SIS machine of Fig. 1 with
the
outer casing removed.
Fig. 10 is a left side view of the embodiment of the SIS machine of Fig. 1
with the
outer casing removed.
Fig. 11 is a right side view of the embodiment of the SIS machine of Fig. 1
with
the outer casing removed.
Fig. 12 is a perspective view of a saw of the embodiment of the SIS machine of
Fig. 1.
Fig. 13 is a perspective front view of the SIS machine of Fig. 1 with the
casing
removed.
Fig. 14 is a top view of the SIS machine of Fig. 1 with the cutting chamber
removed.
Figs. 15 ¨ 17 are perspective views of an embodiment of the clamp assembly
used in the SIS machine of Fig. 1.
Fig. 18 is a perspective view showing an alternate embodiment of the clamp
assembly used in the SIS machine of Fig. 1.
Fig. 19 is a block diagram of the operating system of the SIS machine.
Fig. 20 is a block diagram of another embodiment of the operating system of
the
SIS machine.
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Figs. 21A¨ 21G are views showing the positioning and cutting operations.
Figs. 22A ¨ 22D are views showing an alternate embodiment of the positioning
and cutting operations.
Figs. 23A and 23B are views showing another embodiment of the positioning and
cutting operations.
Figs. 24A ¨ 24D are block diagrams illustrating an embodiment of the operation
of the SIS machine.
Fig. 25 is a block diagram illustrating an embodiment of the operation of the
SIS
machine.
Fig. 26 is a block diagram illustrating an embodiment of the positioning and
cutting operation.
Fig. 27 is a block diagram illustrating an embodiment of the verification
process.
Figs. 28A and 28B are block diagrams illustrating an embodiment of the
operation of an ordering system.
Figs. 29A and 29B are block diagrams illustrating an embodiment of the
operation of an ordering system.
Fig. 30 shows part of the ordering system of Figs. 12A and 12B.
Fig. 31 is a block diagram illustrating the system for measuring the
dimensions of
an architectural feature.
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Fig. 32 is a block diagram illustrating another embodiment of the operation of
an
ordering system.
Fig. 33 is a block diagram illustrating yet another embodiment of the
operation of
an ordering system.
Figs. 34 through 42 are sample screen shots that may be displayed on the user
interface during the cutting operation.
Fig. 43 is a perspective view of an alternate embodiment of the SIS machine.
Figs. 44, 45A and 45B show one operation of the SIS machine of Fig. 43.
Fig. 46 and 47 show another operation of the SIS machine of the invention.
Figs, 48A through 481 show yet another operation of the SIS machine of the
invention.
Fig. 49 is a block diagram illustrating an operation of the SIS machine of the
invention.
Fig. 50 is a block diagram illustrating another operation of the SIS machine
of the
invention.
Fig. 51 is a block diagram illustrating yet another operation of the SIS
machine of
the invention.
Fig. 52 is a front view of the SIS machine of Fig. 43.
Fig. 53 is a top view of the SIS machine of Fig. 43.
CA 02746780 2011-07-18
Fig. 54 is a perspective view of an embodiment of a dust control system.
Fig. 55 is a top view of the SIS machine of Fig. 43 with the drawer in an open
position.
Fig. 56 is a perspective view of the SIS machine of Fig. 43 showing the drawer
structure.
Fig. 57 is a perspective view of the drawer of the SIS machine of Fig. 43.
Fig. 58 is a bottom perspective view of an embodiment of a package packed with
a window covering usable in the SIS machine.
Description of Embodiments of the Invention
Referring to Figs. 1, 2, 5, 6 and 7, the size-in-store (SIS) machine 1
comprises an
internal frame 2 that supports the cutting, measuring and operating systems of
the SIS machine. An outer housing 4 is provided to cover the internal
mechanisms of the SIS machine. An opening 5 is provided to allow access to
the interior cutting chamber 8 of the apparatus to allow a user to place
window
coverings into and remove window coverings from the SIS machine. Opening 5
is covered by a door 6 that isolates the cutting chamber 8 from the exterior
of the
machine. The door 6 may comprise a transparent window 10 to allow a user to
observe the cutting and measuring operations. The door 6 is movably supported
at either end by tracks 12 positioned at either end of the opening 5. In one
embodiment a drive 15 such as a rack and pinion is used to automatically slide
the door 6 in tracks 12 between open and closed positions. Other mechanisms
such as pneumatic or hydraulic cylinders, a rotary motor or the like may be
used
to open and close the door 6. Further, the door 6 may be hinged rather than
sliding. The door may also be opened and closed manually. Sensors 16 such as
limit switches, optical sensors, pressure sensitive switches or the like may
be
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provided to detect if the door 6 is closed and to transmit a signal to the
operating
system indicating the door's status. The operating system may prevent
operation
of the SIS machine if the door 6 is not closed.
A platform 20 that supports the window covering during the measuring and
cutting operations is provided in cutting chamber 8 adjacent to opening 5 such
that a user can place a window covering on the platform 20 when the door 6 is
open. The platform 20 comprises a substantially horizontal surface that is
dimensioned to be able to receive and support a range of blind sizes.
In one embodiment, a separate access opening 22 is provided on one side wall
24 of housing 4 such that a blind may be loaded through access opening 22 into
cutting chamber 8 from the end of the machine rather than through door 6.
Opening 22 is useful for window coverings that are longer than the length of
the
SIS machine. For example, opening 22 may be used to load the vanes of a
vertical blind into the machine because such vanes may be manufactured in
relatively long lengths that cannot be accommodated through opening 5. One
end of the vanes can be inserted through the access opening 22 with the other
end of the vanes extending from the housing 4 through opening 22.
Alternatively
a feed tube or other conveyor may be provided that communicates with opening
22 and allows the window covering to be inserted into the machine remotely.
The ends of the vanes located in the cutting chamber 8 can then be cut to
length
as will hereinafter be described.
Referring to Figs. 2, 5, 8 and 15 ¨ 17, located along the front edge of the
cutting
chamber 8 adjacent to the front edge of platform 20 is a lateral support
surface
28 that in the illustrated embodiment is defined by a plurality of rollers 26.
The
lateral support surface 28 facilitates the movement of the window covering
across the platform 20 during the measuring and cutting operations. During the
measuring and cutting operations, the window covering is pressed against the
lateral support surface 28 and slid across the platform 20 as will hereinafter
be
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described. The use of the rollers 26 facilitates the sliding movement of the
window covering on platform 20. The rollers 26 may be eliminated and replaced
by a stationary vertical wall where the window covering is pressed against and
slides along the stationary wall. The wall may comprise a low friction
surface.
Further, another low friction device may be used in place of the rollers or
wall if
desired. For example, a movable belt, a plurality of bearings or other low
friction
surface or device may comprise the lateral support surface 28.
An alternate embodiment of the SIS machine is shown in Figs. 43, 52, 53 and 55
through 57 where like reference numerals are used to identify like components
described with reference to the embodiment of Fig. 1. The SIS machine
comprises an internal frame that supports the cutting, measuring and operating
systems of the SIS machine. An outer housing 4 is provided to cover the
internal
mechanisms of the SIS machine. An opening 4405 is provided in the front of the
housing 4 to allow access to the interior cutting chamber 8 of the apparatus.
Cutting chamber 8 may be covered by a transparent window 4309 to allow a user
to observe the cutting and measuring operations.
A drawer 4302 is movably mounted in the opening 4305 such that it can be
moved horizontally between an open position (Figs. 55 and 56) and a closed
position (Figs. 43, 52 and 53). The drawer 4302 comprises a platform 20 for
supporting the window covering during the positioning and cutting operation
and
a front wall 4306 that closes the opening 4305 when the drawer 4302 is in the
closed position to isolate the cutting chamber 8 from the external
environment.
The front wall 4306 also supports the lateral support surface 4328. The
lateral
support surface 4328 may comprise the plurality of rollers 4326 or other low
friction devices for facilitating the movement of the window covering across
the
platform 20 during the measuring and cutting operations. When the drawer is in
the open position the user may place a window covering on plafform 20 and
close the drawer to move the platform 20 and window covering into cutting
chamber 8. When the drawer 4302 is closed, the cutting chamber 8 in the
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embodiment of Fig. 43 is configured substantially the same as the cutting
chamber 8 in the embodiment of Fig. 1.
One side wall of the housing 4 includes a cut-out area or opening 4322 at one
end of the opening 4305 adjacent the plafform 20 to accommodate window
coverings which are longer than the machine. Referring to Figs. 46 47 and 56,
for example, vertical window coverings may be manufactured in lengths that are
longer than the length of opening 4305 or machine 1. The cut-out area or
opening 4322 is open towards the front of the SIS machine and is positioned
such that a window covering supported on platform 20 may extend out of
opening 4322. To accommodate a long window covering the window covering is
placed on the plafform 20 by inserting the window covering through opening
4323 (Fig. 57) such that it extends off of the end of the platform 20 to the
side
having opening 4322. When the drawer 4302 is closed the long window covering
resting on platform 20 extends out of the machine through the opening 4322 and
is positioned between the opening 4322 and the front wall 4306 of drawer 4302.
Opening 4322 may be covered by a movable door 4323 that is opened to allow
access to opening 4322.
Referring to Figs. 3, 4, 6, 8 10 ¨ 12 and 14, located at either end of
plafform 20
are cutting devices such as saws 30 and 32 for cutting the window covering to
the desired size. The saws 30 and 32 are substantially identical such that
specific reference will be made to saw 30. Saw 30 comprises a saw motor 34 for
rotating the arbor 38 on which the saw blade 36 is mounted. The motor 34 is
connected to the saw arbor 38 via a transmission. The motor 34, transmission
and arbor 38 are mounted on a platform 40 that is in turn supported on rails
42.
The rails 42 support platform 40 such that platform 40 can reciprocate
transversely to the plafform 20 to bring the saw blade 36 into contact with a
window covering supported on and extending over the end of platform 20.
Platform 40 moves saw blade 36 through the window covering to cut the window
covering. The saws may be replaced by other cutting devices. For example, die
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cutters or lasers may be used to make the cut. Moreover, a combination of
cutting devices may be used depending on the window covering material,
material thickness or the like.
To move platform 40, a drive 43 is provided. Drive 43 may comprise a motor 44
that is supported on the platform 40 and that rotates a pinion 46 that engages
a
rack 48 mounted on frame 2. When the motor 44 is actuated, the pinion 46 is
rotated and through its engagement with the rack 48 reciprocates platform 40
on
rails 42 toward and away from the window covering.
In one embodiment, two saw blades 36 and 36a are provided with each of saws
30 and 32 to minimize routine maintenance of the machine. A saw blade has a
limited life span such that after a predetermined amount of use the blade must
be
replaced. If only one saw blade is provided on each saw, more maintenance of
the SIS machine is required. To minimize the routine maintenance of the SIS
machine, two blades may be provided on each saw where the blades may be
changed automatically.
Referring to Figs. 3, 8, 12 and 14, in such a two blade arrangement, each saw
comprises a motor 34 for driving arbors 38 and 38a that support blades 36 and
36a, respectively. The arbors 38 and 38a are mounted on a housing 50 such
that blades 36 and 36a are supported in an overlapping relationship. Housing
50
can pivot on an axle 51 relative to the platform 40 about an axis parallel to
the
arbors 38 and 38a. The housing 50 is shown in a first orientation where blade
36
is positioned to cut a window covering and blade 36a is positioned as a
replacement blade. The housing 50 is maintained in the illustrated position by
a
locking mechanism 56 that locks the housing 50 relative to the platform 40. In
one embodiment the locking mechanism 56 comprises a retractable post where
the post is extended from the plafform 40 to engage a mating receptacle on the
housing 50 to lock the housing 50 relative to the plafform 40. To unlock the
housing 50, the post 56 is retracted from the receptacle allowing the housing
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to rotate on axle 51. A pair of stops 62 and 64 comprising bumpers 52 and 54
and sensors 58 and 60 ensure that the housing 50 assumes the correct
orientation as will hereinafter be described. Sensors 58 and 60 may comprise
limit switches, optical sensors, pressure sensitive switches or any other
sensor
capable of sensing the orientation of housing 50 and generating a signal
indicative of the orientation. The stops 62 and 64 are movably mounted such
that each stop can be extended from or retracted into the platform 40.
To explain the operation of the saw assembly, assume that the blades 36 and
36a and housing 50 are initially oriented as shown in Fig. 3 and 12. Blade 36
cuts the window coverings as will hereinafter be described. Each cut is
counted
and the total number of cuts is stored in the memory of the operating system.
When the total number of cuts equals a predetermined maximum number of cuts,
blade 36 is replaced. The predetermined maximum number of cuts will depend
on the blade construction and the material being cut, however, the
predetermined
maximum number of cuts is preferably selected such that the blade is replaced
before wear on the blade degrades its cutting performance. When the total
number of actual cuts equals the predetermined number of cuts, the locking
mechanism 56 is withdrawn from the housing 50 thereby allowing the housing to
freely rotate relative to platform 40. Simultaneously with the unlocking of
the
housing 50, the first stop 62 is retracted into housing 50 and the second stop
64
is extended from housing 50. The saw blades 36 and 36a, spinning on arbors 38
and 38a, create enough inertia that the housing 50 rotates on the support axle
51
when the locking mechanism 56 is retracted without the use of any other drive
mechanism. The housing 50 rotates until a flange 66 on the housing contacts
stop 64. In this position, the saw blade housing 50 has rotated 180 degrees
and
is oriented such that the second blade 36a is positioned to cut the window
covering and the first saw blade 36 is in the reserve position. Sensor 60,
associated with stop 64, produces a signal indicating that housing 50 has
rotated
to the new position. The signal from sensor 60 is transmitted to the CPU and
the
locking mechanism 56 is actuated to lock housing 50 in the new position. The
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total number of cuts are counted and maintained in memory for the new blade
36a. Both blades 36 and 36a may be replaced during a single service visit when
the second blade reaches a predetermined maximum number of cuts.
Because the saw blades are positioned in an overlapping relationship, the
operating system that controls the measuring and cutting operations must be
informed as to which blade is in the cutting position. The sensors 58 and 60
associated with the stops 62 and 64 provide this information to the operating
system by transmitting a signal to the CPU when the housing 50 contacts the
stop. The operating system then adjusts the measuring and cutting operations
to
account for the difference in saw blade positions.
In an alternate embodiment, the saw blades 36 and 36a are positioned such that
the blades are in the same cutting plane. In such an arrangement the operating
system does not adjust the cutting operation based on which blade is being
used.
However, such an arrangement requires additional space because the coplanar
blades require more room than the overlapping blades shown in the drawings. In
either arrangement the sensors 58 and 60 associated with the stops 62 and 64
may be used to provide feed back to the CPU that the blades are properly
positioned.
Referring to Figs. 5, 12, 15 ¨ 17 and 57, a clamp assembly 80 is provided that
comprises a clamping jaw 82 that can be extended and retracted to trap a
window covering against the lateral supporting surface 28, 4328. Jaw 82 is
supported for reciprocating linear movement on a bar or bearing 83 that rides
on
rails or bearings 86 where jaw 82 is moved over the rails 86 by a drive 87
such
as a pneumatic cylinder, electric motor, solenoid, hydraulic cylinder or the
like.
The drive 87 may also comprise a rack and pinion or ball screw drive or the
like.
The jaw 82 may be extended to clamp a window covering against the lateral
supporting surface 28, 4328 and retracted to release the window covering. Fig.
57 shows the clamp assembly 80 for the embodiment of the SIS machine shown
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in Fig. 43. The clamp assembly in this embodiment is substantially the same as
in the embodiment of Figs. 5, 12 and 15 ¨ 18 except that the clamp assembly 80
is mounted on the drawer 4302 such that the clamp assembly moves with the
drawer.
The clamp assembly 80 is mounted on a carriage 88 that is mounted on a linear
drive such as a ball screw drive or rack and pinion. Rotation of pinion (not
shown) engages rack 93 to reciprocate the carriage 88 along the length of
platform 20. In one embodiment the pinion or other drive mechanism is rotated
by a stepper motor or servomotor 91 such that the position of the carriage 88
and
clamp assembly 80 along the plafform 20 can be controlled with great accuracy.
Each rotation of the stepper motor or servomotor 91 translates into a
predetermined length of linear travel of the clamp assembly 80 along the
platform
20. The rotation of the stepper motor or servomotor 91 can be precisely
controlled to precisely control the linear motion of the clamp assembly 80 and
its
position along platform 20. In one embodiment, the carriage 88 supports sensor
92 such as an optical sensor. In one embodiment sensor 92 is used to measure
and position the window covering relative to the saws 36 and 36a as will
hereinafter be described.
An alternate embodiment of the clamp assembly is shown in Fig. 18 at 280 that
is
similar to clamping jaw 80 as previously described. Clamp assembly 280 is
provided that comprises a clamping jaw 282 that can be extended and retracted
to trap a window covering against the lateral supporting surface 28. Jaw 282
is
supported for reciprocating linear movement as previously described. The jaw
282 may be extended to clamp a window covering against the lateral supporting
surface 28 and retracted to release the window covering as previously
described.
The clamp assembly 280 is mounted on a carriage 88 that is mounted on a linear
drive as previously described to reciprocate the carriage 88 along the length
of
plafform 20.
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In order to position the window covering relative to the clamping jaw 282,
clamping jaw 282 is provided with a physical engagement member such as pin
285. The position of the pin 285 relative to the clamping jaw 282 is known.
For
example pin 285 may be located in the center of clamping jaw 282. The window
covering and package are provided with a hole 201 located on the window
covering 200 (Figs. 23A and 23 B). The window covering 200 is inserted into
the
SIS machine and placed on platform 20 such that the pin 285 is inserted into
the
hole 201 in the window covering. As a result, the position of the window
covering
200 relative to the clamping jaw 282 is known. In one embodiment the hole in
the window covering is located at the center of the window covering such that
the
pin locates the center of the window covering such that the center of the
window
covering is known to the SIS machine. Where the pin 285 is located on the
center of the clamping jaw 282, the clamping jaw 282 is also aligned with the
center of the window covering.
In an alternate embodiment, a locating pin is located on the machine housing
rather than on the clamping jaw 282. Referring to Figs. 44, 45, 55 and 56 the
first engagement element comprises a pin 4402 mounted on the lateral support
surface 4328 of the drawer 4302. The pin 4402 projects from the lateral
support
surface 4328 at the center of the platform. The pin 4402 is movable between an
extended position where it extends beyond the lateral support surface 4328
(e.g.
beyond rollers 4326) and can engage a window covering and a retracted position
where it is positioned behind the lateral support surface 4328 (e.g. behind
rollers
4326). The pin 4402 may be moved by a solenoid or other similar drive 4404.
The drive 4404 is controlled by the PC to selectively and automatically extend
and retract the pin 4402. The pin 4402 engages a mating engagement element
in the form of alignment hole 201 formed on the package and/or window covering
200 that closely receives pin 4402. The alignment hole 201 is located at the
center of the package and window covering and locates the window covering in a
known position on the platform 20.
19
CA 02746780 2011-07-18
To initiate the cutting operation, the drive 4404 is activated to extend pin
4402
beyond lateral support surface 4328 (Block 4901). The user opens drawer 4302
(Block 4902) and places the window covering on the platform 20 such that the
center pin 4402 extends into the centrally located hole 201 on the
package/window covering (Block 4903). The drawer 4302 is closed by the user
(Block 4904). When the cutting operation is initiated, the clamp assembly 80
and
clamping jaw 82 are positioned at the center position of the plafform 20 and
the
window covering is centered relative to the clamping jaw 82 by the pin 4402.
The
clamping jaw 82 is extended to force the window covering against the lateral
support surface 4328 (Block 4905). The pin 4402 is then retracted from the
window covering by drive 4404 (Block 4906).
The various sensors described herein transmit signals to the CPU of the system
operating system to control operation of the SIS machine. Further, the various
drives described herein are controlled by the CPU to position and cut the
window
covering. The CPU may be located in the machine 1 or it may be located
remotely from the machine.
Referring to Fig. 19, one embodiment of the operating system of the SIS
machine
1 includes a computing platform 100. The platform is controlled by a processor
102 which serves as the central processing unit (CPU) for the platform. Memory
104 is typically divided into multiple types of memory or memory areas such as
read-only memory (ROM), and random access memory (RAM). A plurality of
general-purpose adapters, 106 are present. At least one, in this example,
serves
to connect the computing platform to a network 108. The network might be a
corporate intranet, a local area network (LAN), the public switched telephone
network, a wireless network, the internet or a combination of such networks.
Computer program code instructions for implementing the appropriate
applications and controlling the SIS machine are stored on the fixed medium
110.
When the system is operating, the instructions are partially loaded into
memory
104 and executed by the CPU 102. Numerous types of general purpose
CA 02746780 2011-07-18
computer systems and workstations are available and can be used to implement
computing platform 100. Available systems include those that run operating
systems such as WindowsTM by Microsoft, various versions of UNIXTM, various
versions of LinuxTM, and various versions of Apple's MaCTM OS. A user
interface
112 such as a touch screen and/or audio speakers is provided to receive input
from the user and to display output to the user. Other user interface devices
may
be used such as voice recognition, wireless communication technology, joy
sticks, video displays, monitors, keyboards, thumbwheels or the like. User
interface 112 is intended to include any apparatus that allows the user to
input
data to the system and/or that allows the system to display information to the
user.
The entire function of the invention, including the common database can be
implemented in whole or in part on a single computing platform like that shown
in
FIG. 19. In other embodiments, however, a common database may be stored on
a database server such as an SQL server. Processor 120, adapters 122, and
memory 124 function similarly to those of computing platform 100. If a
corporate
intranet is used for connectivity, the applications or modules on computing
platform 100 can be accessed from a client workstation via a web page.
A computer program which implements parts of the invention through the use of
a system like that illustrated in FIG. 19 can take the form of a computer
program
residing on a computer usable or computer readable tangible storage medium
such as a diskette. A computer program product containing the program of
instructions can be supplied in such a form, and loaded on the machines
involved, either directly, or over a network. The medium may also be a stream
of
information being retrieved when the computer program product is "downloaded"
through the Internet. The computer programs can reside on any medium that
can contain, store, communicate, propagate, or transport the program for use
by
or in connection with an instruction execution system, apparatus, or device.
The
computer-usable or computer-readable medium may be, for example but not
21
CA 02746780 2011-07-18
limited to, an electronic, magnetic, optical, electromagnetic, infrared, or
semiconductor system, apparatus, device, or propagation medium. Other
examples of a tangible computer-readable medium would include a portable
computer diskette or portable fixed disk, an optical fiber, a compact disc
read-
only memory (CD-ROM), and a digital versatile disc read-only memory (DVD-
ROM).
In the embodiment of Fig. 20 a processor 202 in the form of a PC and a
separate
PLC controller 203 associated with the drive 91 of clamp assembly 89 are used
to control operation of the SIS machine to position and cut the window
covering.
The system of Fig. 20 is otherwise the same as the system of Fig. 19.
Operation of the SIS machine will now be described. When the machine is first
powered up, the center position CP of the clamp assembly 80 relative to the
cutting devices such as saws 30 and 32 may be determined. The center position
CP is the point mid-way between the active blades of the two saws 30 and 32
and is shown, for example, in Fig. 21. To determine the center position, the
clamp assembly 80 is moved along the platform 20 in a first direction until
the
clamp reaches the end of travel. The end of travel may be identified by a
sensor
106 such as limit switch, optical sensor or the like. The sensor 92 mounted on
the clamp assembly 80 may also be used for this function. A signal from the
appropriate sensor is provided to the CPU 102 indicating that the clamp has
reached the end of travel. The CPU then sends a signal to drive 89 such that
the
stepper motor or servomotor 91 rotates a predetermined number of rotations
until
the clamp assembly 80 is located in the center position CP of the platform 20.
The machine is then ready to cut a window covering.
Locating the center position could also be performed other than at start up of
the
machine and may be performed by other processes. For example a separate
centering switch may be provided that is located at the center position and
that is
"contacted" by the clamp assembly 80 either physically, magnetically,
optically or
22
CA 02746780 2011-07-18
electronically to identify the center position. Further, while in one
embodiment
the clamp assembly 80 operates from the center position CP of the platform 20,
it
is to be understood that the clamp assembly 80 could initiate the cutting
operation from any start position provided that the start position is a known
position relative to the blades of saws 30 and 32.
To cut a window covering, the user places a window covering 200 in the cutting
chamber 8 on platform 20 (Block 701, Fig. 24A). The user may be directed
where to place the window covering by visual, audio or other commands from
processor 102 via user interface 112. The platform 20 may also have a visual
indicator directing the user as to the proper placement of the window covering
on
the platform. For example, the platform 20 may include indicia such as
printing
indicating the proper placement of the window covering. In one embodiment,
proper placement of the window covering on platform 20 results in the window
covering being detected by sensor 92 (Fig. 21A). Once the window covering is
properly positioned on the platform 20 a signal from sensor 92 may be
transmitted to and received by the CPU indicating the presence of a window
covering (Block 702). In response to this signal the CPU 102 actuates drive 15
to automatically close and lock door 6 or drawer 4302. The door 6 and drawer
4302 may be closed manually. The door 6 and drawer 4302 isolate the cutting
chamber 8 from the external environment and user (Block 703). Sensor 16
transmits a signal to the CPU indicating that the door 6 is in the closed
position
(Block 704).
The window covering 200 may be cut in the package or it may be removed from
the package before being inserted into the machine. One example of a suitable
package is disclosed in U.S. Patent Application Serial Number 10/908,728 filed
May 24, 2005 and is incorporated in its entirety herein. The operating system
can
be programmed to cut only window coverings in the package or only window
coverings out of the package. Alternatively, the machine can be programmed to
cut the product in either form, provided that the form of the product is input
to the
23
CA 02746780 2011-07-18
CPU prior to the cutting operation. "Window covering" as used herein for
explaining the operation of the SIS machine includes both the window covering
in
the package and the window covering without the package and is represented by
element 200 in the Figures.
The package or the window covering may be provided with a mark 101 at its
longitudinal center where mark 101 can be sensed by sensor 92. The mark 101
may include reflective tape, reflective ink or other optically identifiable
surface if
sensor 92 is an optical sensor, a physical characteristic such as an
indentation if
the sensor is a mechanical sensor, a magnetic stripe if the sensor is a
magnetic
sensor or other combination of mark and sensor provided that sensor 92 can
determine the center of the blind by reference to the mark.
Where the physical pin 285 of the embodiment of Fig. 18 or the retractable pin
4402 of the embodiment shown in Fig. 43 are used, mark 101 may be eliminated
and the physical engagement of the window covering/package with pin 285 is
used to locate the center of the window covering. Referring to Figs. 23A and
23B, window covering/package 200 is placed on platform 20 and the pin 285 is
manually inserted into the centering hole 201 formed in the center of the
window
covering 200 when the user loads the window blind into the SIS machine, Fig.
25. Referring to Figs, 44 and 45 the window covering/package 200 is placed on
platform 20 in drawer 4302 and the pin 4402 is manually inserted into the
centering hole 201 formed in the center of the window covering 200 when the
user loads the window blind into the SIS machine, Fig. 49. The engagement of
the pin 285, 4402 with the centering hole 201 on the window covering locates
the
center of the window covering relative to the SIS machine. In such embodiments
the use of sensors to determine the center of the window covering can be
eliminated. Further, if the retractable pin on the lateral surface is used,
the pin is
retracted after the clamping jaw 82 clamps the window covering against lateral
support surface 4328. If the window covering is cut while in the package, the
package is formed with a hole that is coextensive with the centering hole on
the
24
CA 02746780 2011-07-18
window covering such that the pin can pass through the hole in the package and
engage the window covering. Alternatively, a hole on the package can be used
if
the window covering is aligned within the package. The centering hole on the
window covering may be made directly in the window covering, such as in the
head rail, or a centering bracket with a hole formed therein may be attached
to
the window covering. For example the centering bracket with the centering hole
may be fixed to the center of the head rail. Further, while a cylindrical pin
engaging a mating round centering hole is shown, the physical engaging
members may include any physical structures capable of engaging one another
to locate the window covering relative to the clamp. For example, the male
member may extend from the window covering or package and engage a female
receptacle on the clamping jaw. These members may have any shape and a
plurality of mating pairs of engaging members may be used.
A transaction record 230 is created by CPU 102 and stored in memory 104
(Block 705). The transaction record 230 may be populated with applicable
information related to the transaction such as time, date and location of the
SIS
machine, customer information such as name, address, payment information, bar
code number, product cut width, time spent during cutting, number of times the
user navigates to each screen page and any errors reported by the PLC or the
like (Block 706). Other information may also be stored in the transaction
record.
User input data is also transmitted to and received by CPU 102 identifying, at
least, the finished or cut size of the window covering (Block 707). The
process
for entering this information will be discussed in detail hereinafter. The
user may
be required to input other information regarding the window covering such as
the
type of blind, color, style, stock size or the like. The user may also be
requested
to input other information such as name, address, payment information or the
like. Any or all of this information may be stored in transaction record 230.
CA 02746780 2011-07-18
To cut the window covering, if the physical engagement members of Figs. 18 or
43 are not used, the clamp assembly 80 is moved along the platform 20 by drive
89 from the known center position CP until the sensor 92 locates the center
mark
101 of the window covering/package 200 (block 708). The clamp assembly is
stopped in a position where the center of the clamp assembly 80 is aligned
with
the center CW of the window covering/package (Block 709), Fig. 21B. The
position of clamp assembly 80 when positioned at the center CW of the window
covering/package 200 is known. The CPU determines the distance D between
the center CW of the window covering/package 200 and the center position CP
to establish the location of the window covering/package 200 relative to the
machine. These steps may be eliminated where the pin 285 and hole 201 of Fig.
18, or the retractable pin 4402 and hole 201 of Fig. 44, or other physical
engaging members, are used. In such an arrangement the window covering is
centered when it is manually inserted into the SIS machine by the physical
engagement of the pin with the centering hole formed on the window covering.
Once the clamp assembly 80 is aligned with the center CW of the window
covering/package 200 the drive 87 extends jaw 82 to force the window
covering/package 200 against the lateral support surface 28 (Block 710, Block
4402, 4905), Figs. 21C, 45B. In this position the clamp assembly 80 is
centered
on the window covering/package 200; the position CW of the clamp assembly 80
relative to the center position CP is known; and the window covering/package
200 is trapped between the jaw 82 and the lateral support surface 28. In the
embodiments of Figs. 21C and 45B the clamp assembly 80 is also positioned at
the center of plafform 20.
Referring to Fig. 24C, the CPU then determines how far to move the window
covering/package to properly position it in front of the saws 30 and 32 (Block
711). The user enters into the processor 202 and the processor receives
whether the window covering is intended to be mounted as an inside mount or an
outside mount (Block 4404) and the desired size of the window covering (Block
26
CA 02746780 2011-07-18
4403). If an inside mount is selected, the processor 202 automatically deducts
a
predetermined length from the desired size entered by the user to obtain the
final
dimension of the window covering (Block 4405). If an outside mount is
selected,
the final dimension of the window covering is the desired size input by the
user.
The user may also enter the window height. The information entered by the user
is stored in the record for that transaction. The CPU 102 accesses the desired
cut size of the window covering as entered by the user. From this dimension
the
CPU calculates how far the center of the window covering must be positioned
from the saws 30 and 32 to achieve the desired cut size of blind (Block 4406).
The CPU divides the desired finished size by two to obtain a resulting
distance
from the center of the window covering to each end hereof. The center of the
window covering must be positioned this resulting distance from the saw. The
user also enters whether the window covering is for an inside mount or an
outside mount. For an inside mount a small distance is subtracted from the
desired size to accommodate for the space needed to mount inside of a window
frame. For example, if a window covering is to be cut to a width of 35 inches,
the
CPU determines that the distance from the center of the window covering to
each
of the saws must be 17% inches. For an inside mount % of an inch may be
deducted from the desired size before dividing the desired size by 2. The CPU
can make this determination without any information regarding the stock size
of
the blind or the amount of material to be cut from the end of the blind. For
some
applications material may be cut from only one end such as vanes for vertical
blinds.
In the embodiment of Fig. 20, the PLC 203 determines how far to move the
window covering/package to properly position it in front of the saws. The
processor 202 transmits to the PLC 203 the final dimension of the window
covering as entered by the user and as corrected to account for an inside
mount,
if necessary (Block 4407). Using this dimension, the PLC 203 determines how
far the center of the package must be positioned from each saw to obtain the
desired size of the window covering as previously described (Block 4408).
27
CA 02746780 2011-07-18
Specifically, the PLC 203 divides the final dimension provided by the
processor
202 by two to obtain a half length. The half length is equal to the distance
from
the center of the package/window covering to the end of the window covering
and corresponds to the distance the center of the blind must be positioned
from
each saw. The PLC 203 makes this determination without any information
regarding the stock or starting size of the window covering, the amount of
material that will eventually be cut from the end of the window covering or
whether the window covering is intended for an inside mount or an outside
mount. The window covering is then cut as described below.
The clamp assembly 80 is then moved toward one end of the machine based on
this determination such that the center of the blind is positioned the
resulting
distance from the saw (Block 712, Fig. 24C) and Fig. 21D. Clamp assembly 80
moves the window covering/package such that the position of the clamp
assembly relative to the window covering/package 200 remains fixed. The clamp
assembly 80 is moved such that the window covering/package is positioned in
front of one of saws 30 or 32 with the center of the window covering spaced
from
the saw the predetermined distance. Fig. 17 also shows the clamp assembly 80
moved to an end of platform 20. Secondary clamps 99 may also be used
adjacent each of the saws to hold the window covering in position during the
cutting operation (Fig. 5, 15). The secondary clamps 99 are extended to trap
the
window covering against the lateral surface 28. The saw blade is rotated at
high
speed and the saw is moved toward the window covering/package by drive 43
such that the saw engages and cuts the window covering at the desired location
(Block 713, Fig. 24C) and Fig. 21E.
The clamp assembly 80 is then moved toward the opposite end of the machine
moving the window covering/package 200 with the clamp assembly (Block 714).
The position of the clamp assembly 80 relative to the window covering/package
200 remains fixed. The clamp assembly 80 is moved such that the window
covering/package is positioned in front of the other of saws 30 and 32, Fig.
21F
28
CA 02746780 2011-07-18
with the center of the window covering spaced from the saw the predetermined
distance. Secondary clamps 99 may also be used adjacent each of the saws to
hold the window covering in position during the cutting operation (Fig. 5,
15).
The secondary clamps 99 are extended to trap the window covering against the
lateral surface 28. The saw blade is rotated at high speed and the saw is
moved
toward the window covering/package by drive 43 such that the saw engages and
cuts the window covering at the desired location (Block 715, Fig. 24C) and
Fig.
21F. The jaw 82 holds the window covering/package 200 tight against the
lateral
support surface 28 to support the window covering/package while it is cut.
Both
ends of the blind may be cut simultaneously by moving one or both of the saws
relative to the window covering rather than moving the window covering.
Because the SIS machine uses controllable motors for the saws and may cut
window coverings either in or out of the packaging, the SIS machine may cut a
wide variety of window coverings including wood, plastic, fabric, vinyl and
aluminum and a variety of styles including horizontal blinds, vertical blinds,
woven shades, pleated shades, Roman shades and cellular blinds. The saws
can also cut the shade panel and the head rail and bottom rail in one cut. The
rotational speed of the saws and the feed rate of the saws can be controlled
on a
per cut basis based on the type of blind loaded in the SIS machine such that
the
saws may cut a wide variety of materials.
The process for cutting a vertical blind will now be described. Referring to
Figs.
46, 47 and 50 an engagement element projects from the lateral support surface
4328. The engagement element comprises a retractable pin 4520 that is offset
from the center of the platform (Figs. 55 - 57). The pin 4520 engages an
engagement element comprising an alignment hole 4522 formed on the package
200 for a vertical window covering. Alignment hole is offset from the center
of
the package 200 and the center of the window covering and locates the vertical
window covering in a known position on the platform 20. The pin 4520 is
movable between an extended position where it extends beyond the lateral
29
CA 02746780 2011-07-18
support surface and can engage a window covering and a retracted position
where it is positioned behind the lateral support surface. The pin 4520 may be
moved by a solenoid or other similar drive 4521. The drive 4521 is controlled
by
the PC to selectively and automatically extend and retract the pin. The drawer
4302 is opened and the user places the package containing the vanes or head
rail 200 on the platform such that the pin 4520 extends into the alignment
hole
4522 on the package/window covering package. The drawer 4302 is then
closed. Because vertical window coverings may be longer than the SIS machine,
opening 4322 (Figs. 43 and 56) is provided at one end of the SIS machine that
allows the package containing the vanes or head rail 200 to extend out of that
end of the cutting machine, if necessary, as shown in Figs. 46 and 47. The
clamp
assembly 80 is positioned on the platform 20 centered on the location of the
alignment hole 4522 and the pin 4520. The clamping jaw is extended to press
the package 200 against the lateral support surface 4328 (Fig. 47) and the pin
4520 is withdrawn from the package.
For a vertical window covering material is cut from only one end of the vanes
and
from one end of the head rail. The head rail and vanes are stored in separate
packages and are cut separately. The user selects an icon on the touch screen
to initiate the cutting process (Block 5001). In the typical use a sales
associate
enters a security code and enters that a vertical blind is to be cut. The user
also
enters whether the head rail or vanes are to be cut (Block 5002). For a head
rail
the clamp assembly is shuttled back and forth along the length of the platform
such that the optical scanner 92 scans the package to read the bar code 220 on
the package (Block 5003). For the vanes a separate flip card 221 having a bar
code is held in front of scanner 92 such that it is scanned by the optical
scanner
92 (Block 5004). The user selects the flip card that corresponds to the
selected
vanes and holds the flip card where it can be read by the optical scanner.
While
the flip card is described as being used with the vanes and the head rail is
described as having a bar code on the package, the bar code on the package
and the flip card may be used with any type of window covering. The code from
CA 02746780 2011-07-18
the bar code is used by the PC to obtain from the look-up table the detailed
information for the window covering. After reading the bar code the clamp
assembly 80 is moved to the position on the plafform centered on the location
where the offset pin engages the alignment hole in the package. As previously
explained, while this position does not correspond to the center of the
platform or
the center of the package, this position is known. A transaction record is
created
for the window covering and stored in memory as previously described with
respect to horizontal window coverings.
For a head rail the monitor displays a prompt for whether the window covering
is
an inside mount or an outside mount. The user then enters into the user
interface and the PC receives a signal indicating whether the window covering
is
intended to be mounted as an inside mount or an outside mount (Block 5006).
For vanes the monitor displays a prompt for whether the window covering is an
inside mount, an outside mount or exact. For vanes the user is also provided
with an additional option of "Exact" where the final dimension of the vanes is
the
same as the desired size entered by the user. The user then enters into the
user
interface and the PC receives a signal indicating whether the window covering
is
intended to be mounted as an inside mount, an outside mount or exact (Block
5009). The monitor displays a prompt asking for the desired length of the head
rail or vanes, as appropriate. The user then enters into the user interface
and the
PC receives the desired length of the head rail or vanes (Block 5005). For a
head rail, if an inside mount is selected, the PC automatically deducts a
predetermined length from the desired size of the head rail entered by the
user to
obtain the final dimension of the head rail (Block 5007). If an outside mount
is
selected, the final dimension of the head rail is the desired size input by
the user
(Block 5008). For vanes, for both inside and outside mounts the PC deducts a
predetermined length from the desired size of the vanes to account for the
height
of the head rail. If an outside mount is selected, the final dimension of the
head
rail is the desired size input by the user minus the head rail dimension
(Block
5010). If an inside mount is selected, the PC automatically deducts the
31
CA 02746780 2011-07-18
predetermined head rail dimension and a second predetermined length from the
desired size of the vanes entered by the user to obtain the final dimension of
the
vanes (Block 5011). If "Exact" is selected the final dimension of the vanes
equals
the desired size entered by the user" (Block 5012).
The PLC determines how far to move the package to properly position the head
rail or vanes in front of the saw. As previously explained, the head rail or
vanes
are retained in the package such that the package and head rail or vanes are
cut
simultaneously. Referring to Fig. 47, the packages retain the head rail and
vanes
such that a first end of the head rail or vanes is located a known distance C
from
a first end of the package. The cut is made at the opposite end of the
package.
The alignment hole in the package is spaced a known distance Z from the first
end of the package. For a particular window covering the values for C and Z
are
obtained from the look-up table that was accessed using the bar code (Block
5013). The distance Y the clamp assembly must be positioned from the saw to
obtain the desired final dimension is calculated according to the following
equation:
Y = Final Dimension - Z + C,
where Y is the distance between the alignment hole and the saw (Block 5014).
The final dimension of the vertical window covering is Y + Z - C.
The PC transmits to the PLC the final dimension of the window covering as
entered by the user and including the deductions calculated by the PC, if any.
Using this dimension, the PLC determines how far the alignment hole must be
positioned from the saw to obtain the final dimension of the window covering
as
calculated in accordance with the equation set forth above (Block 5014). This
location is converted to an encoder count that corresponds to the calculated
value Y. The PLC makes this determination without using any information
32
CA 02746780 2011-07-18
regarding the stock or starting size of the blind or the amount of material
that will
eventually be cut from the end of the blind.
The PLC controls the drive for the clamp assembly to move the clamp assembly
toward one saw to position the alignment hole the calculated distance Y from
that
saw (Block 5015). Because a limited amount of space is provided between the
saw 32 and the end of the cabinet of the SIS machine the window covering
cannot be advanced more than distance S beyond the saw. Because it may be
necessary for the clamp assembly to move the window covering more than
distance S to reach the calculated Y position, the SIS machine uses an
iterative
process to cut vertical window coverings.
In this iterative process, the window covering is indexed toward the saw by
the
clamp assembly. An optical sensor 105 is positioned in front of the saw blade
32
that senses the first end of the package as it is indexed toward the saw. The
first
end of the package is then moved past the saw. If the clamp assembly reaches
the calculated Y value (encoder count) before moving distance S, the clamp
assembly is stopped at the encoder count and the stationary clamp 99
associated with this saw is extended to hold the package (Block 5016). The saw
is moved toward the package containing the head rail or vanes such that the
saw
engages and cuts the first end of the package and the head rail or vanes to
the
final dimension (Block 5017). If the clamp assembly does not reach the
calculated Y value (encoder count) before moving distance S, the stationary
clamp 99 associated with this saw is extended to hold the package and window
covering (Block 5018). The saw is moved toward the package containing the
window covering such that the saw engages and cuts a length equal to S from
the first end of the package (Block 5019). This process is repeated until the
clamp assembly reaches the calculated Y value and the package and vanes or
head rail are cut to the final dimension (Block 5016).
33
CA 02746780 2011-07-18
After the window covering is cut to the final dimension, the stationary clamp
99 is
retracted and the clamp assembly 80 moves the window covering and package
to the start position. The clamping jaw 82 is retracted to release the window
covering and package. The drawer 4302 is opened to allow the user to remove
the window covering 200 from the platform.
Referring to Figs. 48A through 481, 51 and 58, the process for squaring a
window
covering and for cutting a window covering with a valance will now be
described.
Prior to cutting a window covering it is necessary to ensure that all of the
components (head rail, bottom rail, slats, shade panel, woven element, cells,
etc.) are squared so that the cut elements all have the same cut width.
Further, a
valance is dimensioned such that it is longer than the window covering with
which it is associated in order to completely cover the head rail when the
window
covering is installed. For the automatic squaring of the window covering
components and for window coverings with valances a specially configured
package and cutting process is used. The process provides automatic squaring
of the window covering components and allows the window covering and valance
to be automatically cut using the SIS machine while maintaining the length
differential between the valance and the window covering.
Referring to Fig. 48A a window covering and package 200 is shown where the
package comprises a box that is configured such that the valance extends from
the box and is movable along its longitudinal axis relative thereto. One
embodiment of a suitable package 200 is shown in Fig. 58. Package 200 is
provided consisting of an open-ended box or sleeve 5822 that is a rectangular
container that is open at both ends. The window covering is oriented in box
5822
such that it is centered in the box with the head rail, slats, bottom rail and
valance
201 extending along the long axis of the box 5822. The window covering 203 is
supported in box 5822 such that it extends beyond the ends of box 5822 with
the
ends of valance 205 extending beyond the ends of window covering 203.
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CA 02746780 2011-07-18
For transport, storage and display purposes end caps 5840 cover the
open ends of the box 5822. The end caps 5840 may be secured to the
box 5822 by any releasable connection including a shrink wrap, adhesive,
tear-away tabs or the like. The end caps 5840 are removed from box
5822 prior to cutting and may be replaced on the box 5822 after the
cutting operation to retain the cut window covering in box 5822. While the
box 5822 is useful for a package for window coverings with valances, the
box may be used with any window covering to provide the automatic
squaring of the components of the window covering as will be described.
Referring again to Figs. 48A through 481 and 51, the window covering is
packaged such that the window covering components and valance 205 extend
beyond the end of the package 200 and can be moved along the longitudinal axis
relative to the package and one another as represented by arrow A in Fig. 48A
(Block 5101). The valance 205 extends beyond the ends of the window covering
203 a distance equal to the final desired length differential between the
valance
and the window covering. Thus, if the valance 205 in the final cut product is
to
be 1/4 inch longer than the window covering, the length of valance extending
beyond the end of the window covering 203 is 1/4 inch. In the drawings the
length
of valance extending beyond the end of the window covering is exaggerated for
illustrative purposes. One end of the valance may extend beyond the end of the
package the entire length differential or both ends of the valance may each
extend beyond the end of the package a portion of the total length
differential as
shown in Fig. 48A.
To cut a window covering with a valance (or to automatically square and cut a
window covering without a valance) additional squaring steps are added to the
cut process. As previously explained, the position of the clamp assembly
relative
to the saws is calculated based on a distance from a known location (e.g.
center
of the window covering) and the clamp assembly is positioned based on the
calculated distance from the known location to the saw. To square the first
end
CA 02746780 2011-07-18
of the window covering, the window covering and package 200 are moved in a
first direction, as represented by arrow B in Fig. 48B, until the end of the
window
covering strikes a squaring surface that is selectively moved into the path of
travel of the window covering (Block 5102). The squaring surface is arranged
such that it is perpendicular to the direction of travel of the window
covering. The
window covering 203 is moved against the squaring surface until the end of all
of
the window covering components abut the squaring surface and are in a
common plane or "square". In the illustrated embodiment the squaring surface
is
the face of the saw blade 36R. The saw blade 36R is moved to the extended
position where it intersects the path of travel of the window covering;
however,
the saw blade 36R is not rotated. While the saw blades 36L and 36R are used
as the squaring surfaces in the illustrated embodiment, the squaring surface
may
be a separate component that is moved into in the path of travel of the blade.
The window covering is moved one half the stock length of the window covering
from the saw blade.
Referring to Fig. 48C, the opposite saw 36L is extended and the package 200,
window covering 203 and valance 205 are moved toward the opposite saw,
arrow C, until the valance 205 and the end of the window covering 203 strike
the
opposite saw blade 36L (Block 5103). The window covering 200 and valance
201 are moved against the saw blade 36L until the window covering and valance
abut the saw blade and the second ends of the valance and the components of
the window covering are coplanar and square.
Referring to Fig. 48D, the saw blade is retracted (Block 5104) and the clamp
assembly 80 is moved to the calculated position, arrow D, to position the
window
covering in front of the saw 35L (Block 5105). Referring to Fig. 48E, the
stationary clamp 199 is extended to hold the window covering 203 in position
and
the saw 36L is rotated at high speed and moved into engagement with the
window covering 203 and valance 205 to cut both the valance and the window
covering at the same time (Block 5106).
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CA 02746780 2011-07-18
Referring to Fig. 48F, the clamp assembly and window covering are then moved
toward the opposite saw 36R and the opposite saw blade 36R is moved to an
extended position where it intersects the path of travel of the window
covering.
The window covering 203 and valance 205 are moved, arrow E, until they abut
the saw blade 36R. The valance 205 is moved relative to the window covering
203 by the saw blade 36R until the first ends of the valance 205 and window
covering components are coplanar (Block 5107). In this position the valance
extends beyond the previously cut end of the window covering 203 a distance
equal to the length differential.
Referring to Fig. 48G, the saw blade 36R is retracted (Block 5108) and the
clamp
assembly 80 is moved to the calculated position, arrow F, to position the
window
covering in front of the saw 36R (Block 5109). Referring to Fig. 48H, the
stationary clamp 199 is extended to hold the window covering 203 and the saw
36R is rotated at high speed and moved into engagement with the window
covering 203 and valance 205 to cut the first ends of at the same time (Block
5110).
Because the valance was moved relative to the window covering prior to making
each cut, the finished size of the valance 205 maintains the same length
differential relative to the window covering 203 as prior to the cuts, Fig.
481.
Thus, if the uncut valance was % inch longer than the uncut window covering,
the
cut valance will be % inch longer than the cut window covering.
The process described above may also be used to square the ends of the
window covering even where a valance is not used. Using a package having
open ends, such as described in Fig. 58, the package may be moved against the
obstruction in the same manner and following the same steps as described with
respect to Figs. 48A to 481. When the ends of the window covering are pushed
against the obstructions all of the window covering components (head rail,
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CA 02746780 2011-07-18
bottom rail, slats, shade panel and the like) are aligned in the same vertical
plane
or "squared". The squared window covering is then clamped and cut as
previously described.
It is to be understood that for any given stock size of window covering there
is a
range of cut sizes that are valid for that size window covering based on the
geometry of the blind including the location of the lift cords, pulley
systems, cord
locks and the like. In one embodiment, to ensure that a window covering is not
cut such that the cut interferes with the operation of the window covering, a
mark
103 may be provided at each end of the window covering/package 200, Figs.
21E and 21F. A sensor 105 is located near the entrance to each cutting device
30, 32 such that if the sensor 105 detects a mark 103 the cutting operation is
terminated before a cut is made. The mark 103 may include reflective tape,
reflective ink or other optically identifiable surface if sensors 105 are
optical
sensors, a physical characteristic such as an indentation if the sensors are
mechanical sensors, a magnetic stripe if the sensors are magnetic sensors or
other combination of mark and sensor provided that sensor 105 can detect the
mark 103. In one embodiment the mark 103 is located between the end of the
window covering and the lift cords, cord locks, pulley systems and other blind
componentry such that a cut is prevented too close to (or inside of) these
components. The mark can be located on the window covering/package such
that blinds of different sizes, shapes, configurations and componentry can be
accomodated.
A vacuum system 90 may be used in the cutting chamber 8 to capture the debris
and dust created during the cutting operation. The vacuum system 90 may
comprise a vacuum motor that communicates with the cutting chamber 8 by
conduits such as flexible hoses. The vacuum system may include a grate in the
cutting chamber that allows the cut material to flow from the cutting chamber
to
the vacuum. Because the SIS machine may be used on a wide variety of
window coverings manufactured from a wide variety of materials, it is
important
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CA 02746780 2011-07-18
that the system be able to remove dust and debris from the cutting chamber.
For
example, when a real wood window covering is cut, the saw cuts through the
wood slats creating dust and debris and cuts through the metal head rail and
bottom rail that may generate sparks. While unlikely, the sparks created by
the
saw blade striking the metal rails could ignite the wood dust and debris.
Accordingly, the system uses a dust management system to minimize the dust
debris in the cutting chamber.
Referring to Fig. 54 the system uses saw blade shrouds 5402 that substantially
surround the bottom of saw blades 36 as the saws reciprocate between the
cutting and non-cutting positions to trap dust and debris generated when
cutting
a window blind. A dust collection plenum 5404 is provided in each saw chamber
for drawing the dust and debris from the saw chambers. Ducts 5406 and 5408
connect the dust collection plenums 5404 and saw blade shrouds 5402 to vortex
dust collectors 5410. The vortex dust collectors 5410 separate the heavy
debris
from the fine dust. The vortex pulls the heavy debris from the vacuum stream
where it falls into a large debris collection bucket 5412. The fines are drawn
through ducts 5414 by dust collector 5418 and captured in a dust collection
bag
5416 where they are collected. Dust collection bag 5416 should be separated
from electrical equipment to reduce chances of igniting dust in bag. The dust
collection bag may be housed in a metal housing. The buckets 5412 and bag
5416 may be removed via doors 5415 in machine housing 4 (Fig. 52) for debris
disposal. Typically, the buckets are emptied and reused and the dust collector
bag is disposed of and replaced. Blast gates 5420 may be provided to control
the flow of air through the system and to control dust collection from the
active
saw.
Large debris such as the metal head rail, chip board, cellular fabric, and the
like
should be prevented from entering the dust collection system to minimize or
eliminate the chances of system clogging. Smooth bore flexible duct or smooth
fixed duct work should be used to reduce the chances of dust accumulation or
39
CA 02746780 2011-07-18
debris lodging within the system. Flow rates in the dust collection system
should
be at minimum of 2500 f.p.m. Conductive non-combustible duct work should be
used where possible with proper grounding. In one example, metal hard
plumbed duct work is used and plastic components are minimized. All
components handling dust should be grounded and bonded to prevent static
build up. The SIS machine should be vented to allow for air flow in the dust
collection system. A sensor may also be included that would prevent the SIS
machine from operating if vacuum system goes down or the system clogs.
Further, fire resistant surfaces may be used inside the cut area and blowers
with
an aluminum blade or housing may be used to prevent sparks if, for example,
the
blower bearings go bad.
An air hose 5424 may also be provided for delivering a high pressure flow of
air
from air source 5426 into the window covering/package to blow the fines and
debris from the head rail, bottom rail and slats such that the fines and
debris can
be pulled into the vacuum stream. This also provides a cleaner product for the
user when transporting and installing the window covering. The removal of the
fines and debris from the cutting chamber minimizes the chance that the debris
will be ignited.
The system may also use a smoke or fire detector system to provide an alarm if
a fire is detected. Any suitable smoke or fire alarm 5422 may be used. The
alarm may provide a signal to the CPU 102 such that the CPU may provide a
suitable alarm. The alarm may be an audible and/or visual signal provided at
the
SIS machine and/or the CPU may transmit a data message to a maintenance
provider, a premise's fire system, a security system, a fire department or the
like
over network 108.
Further, weather stripping is provided to seal the saw chambers and prevent
dust
and fine particles from exiting the saw chambers. The computer and PLC are
also stored in separate compartments 4325 and 4327 (Fig. 43) where the
CA 02746780 2011-07-18
compartments are also sealed to prevent dust and fines from fouling the
electronics equipment.
In an alternate embodiment the clamp assembly 80 may include two sensors 92
and 94, Figs. 22A ¨ 22D used to locate the center of the window covering. The
clamp assembly is moved along the platform 20 by drive 89 from the known
center position CP (Fig. 22A) in one direction until the sensor located at the
leading edge of the clamp (sensor 92) locates the first end 200a of the window
covering/package 200 relative to the known center position CP, Fig. 22B. The
position of the clamp assembly 80 marking the first end of the window
covering/package 200 is saved in memory. The direction of movement of the
clamp assembly 80 is then reversed and the clamp assembly 80 is moved along
the platform 20 by drive 89 from the known center position CP in the opposite
direction until the other sensor (sensor 94), located at the leading edge of
the
clamp, locates the opposite end 200b of the window covering/package relative
to
the known center position CP Fig. 22C. The position of the clamp assembly 80
marking the second edge of the window covering/package 200 is stored in
memory. Based on the detected end positions, the CPU then determines the
center CW of the window covering/package 200. The CPU uses the stored the
positions of the first edge 200a and second edge 200b to determine the center
of
window covering 200. These positions may be determined by, for example,
counting the rotations of stepper motor or servomotor 91 as the clamp assembly
80 moves from the center position CP to the first edge 200a and the second
edge 200b. The CPU then determines the position midway between the first and
second edge positions by, for example, dividing the number of rotations
between
the two positions by two and adding the result to or subtracting it from the
first or
second position, respectively, to arrive at the center of the window covering.
The
center of the window covering may also be determined by calculating the
distances of the first edge 200a and the second edge 200b relative to the
center
position CP. The CPU also determines the distance D between the center of the
window covering and the center position CP. The CPU positions the clamp
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CA 02746780 2011-07-18
assembly 80 such that it is aligned with the center of the window
covering/package Fig. 22D. A single sensor may also be used to detect both
edges of the window covering/package. Once the clamp assembly 80 is aligned
with the center CW of the window covering/package the window covering may be
cut as previously described.
A validation process may also be used to ensure that the cutting operation
described above is valid for the selected window covering. Either the package
with the window covering or the window covering (if removed from the package)
is provided with product identification information in a machine readable form
such as data encoded in bar code 220 that is readable by a sensor 122 such as
optical scanner. While the window covering may be cut either with the
packaging
or removed from the packaging, cutting the window covering in the package may
be simpler and allows the package to hold the product in place during and
after it
is cut. The bar code 220 is unique to the window covering with which it is
associated and identifies the specific window covering by using a unique code
such as a serial number. The bar code 220 may also contain information such
as the size, style, color or the like of the window covering. The bar code 220
may also contain manufacturer's information such as lot number or retailer's
information such as purchase order number.
The bar code 220 is read using a sensor 122 such as an optical scanner to
obtain the identification information (Block 900). The bar code 220 may be
replaced by radio frequency identification (RFID) tags or other suitable
identification technology. The sensor 122 transmits a signal to CPU 102 or
processor 202 encoded with the data specific to the window covering 200. The
identification information may be stored in data base 104 as part of the
transaction record 230 for the window covering.
The CPU 102 or processor 202 may use the user input data and the
indentification information (e.g. the information encoded in or obtained from
the
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CA 02746780 2011-07-18
look-up table using bar code 220) to determine if the customer request is
valid
Fig. 27. The CPU 102 or processor 202 compares the user input desired size to
the allowable product size range as obtained from the bar code 220 (Block 901)
and determines if the user input cut size is a valid cut size for the selected
window covering (Block 902). For example, has the user inadvertantly selected
a
window covering that is smaller than the desired cut size or has the user
selected
a cut size that is too small for the selected stock window covering.
Specifically,
the PC has a look up table that lists a range of blind sizes that are valid
for any
given stock size blind. A comparison is made between the entered desired size
and the range of valid sizes. If the desired size falls within this range, the
cut is
validated and the user is asked to confirm the request. In the embodiment of
Fig.
20 the PC then sends a signal to the PLC to initiate the cutting operation. In
the
embodiment of Fig. 19 the CPU initiates the cutting operation. If the desired
size
is outside of this range, an error message is displayed on the touch screen.
If
the user input data is not valid, an error message will be displayed to the
user by
the user interface identifying the error and requesting that the user correct
the
user input data or the selected window covering (Block 903). If the window
covering/package 200 is provided with marks 103 that are readable by sensors
105 that prevent a cut if the cut would interfere with the components or
functionality of the window covering as previously described, this separate
verification step may be omitted.
The CPU may also compare the user input data to the product identification
information from the bar code 220 and determine if the user has actually
selected
the window covering that the user believes that he or she selected (e.g. does
the
user input style and color match the actual style and color of the window
covering) (Block 904). The display may display the information obtained from
the
look-up table for user review. If the user input data is valid for the
selected blind,
the SIS machine will initiate the cutting process to automatically cut the
blind to
the user's desired size as has been described (Block 905). If the user input
data
is not valid, an error message will be displayed to the user by the user
interface
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CA 02746780 2011-07-18
identifying the error and requesting that the user correct the user input data
or
the selected window covering (Block 903). The validation process may be
repeated until the user data is validated for the selected window covering.
Note,
one or both of verification steps 902 and 904 may be omitted.
Another method for determining the validity of the window covering size
determination is to rely on the weight of the window covering rather than
using a
machine readable data structure such as bar code 220. A scale could be
incorporated into the platform 20 to detect the weight of the window
covering/package 200. A look up in a look up table stored in memory 104 can
then be performed by the CPU 102 or processor 202 comparing the measured
weight to the known weights of the stock window coverings. The weight could be
used to identify window covering characteristics such as permissable of cut
ranges, window covering material or the like where the characteristics are
used
to validate or implement the cutting operation. For example a particular saw
blade type or saw speed may be used for different blind materials. Further,
valid
cut ranges may be determined for a window covering.
After the window covering is cut to the desired size, drive 89 moves the clamp
assembly 80 and the window covering/package 200 to the center position CP
(Block 724, Fig. 24D). Drive 43 retracts the clamping jaw 82 to releases the
window covering/package 200 (Block 725).
The system may then verify that the actual cut length matches the user input
cut
size (Block 726). The clamp assembly 80 is moved along the platform 20 by
drive 89 from the known center position in one direction until the sensor
locates
the first end 200a of the window covering/package 200. The direction of
movement of the clamp assembly 80 is then reversed and the clamp assembly
80 is moved along the plafform 20 by drive 89 in the opposite direction until
the
sensor locates the opposite edge 200b of the window covering/package. The
distance the clamp assembly 80 travels between the two edges 200a and 200b
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CA 02746780 2011-07-18
of the package is detected. The distance traveled is equal to the actual cut
size
of the window covering. The actual cut size is compared to the desired cut
size
input by the user. If the two sizes match the cut is verified. The two sizes
may
be determined to match if the distance between the input cut size and the
actual
cut size fall within a predetermined minimum acceptable error margin.
The vacuum, saws and other moving components are stopped and the door 6 or
drawer 4302 are opened automatically or manually (Block 727). The cut window
covering can then be removed by the user. The cutting operation is completely
automated. The cutting process is also isolated from the user during the
process
to maximize the safety of the process.
The data related to the transaction is stored in a transaction record 230 and
may
include, but not be limited to, original size of product, cut to size of
product, date,
time, store identifier/location, and blind drop (length), bar code number,
product
cut width, time spent during cutting, number of times the user navigates to
each
screen page and any errors reported by the PLC (Block 728). The data captured
by the SIS machine could be transferred to the blind manufacturer 111 or
retailer
outlet system 113 over a network 108 at any time and be associated with the
customer's original order such that a complete record of the order and cutting
operation is maintained (Block 729).
Numerous processes may be used to enable the user to transmit the user input
data to the SIS machine 1. In one operation, Figs. 28A and 28B , the user
measures the window or other architectural feature using traditional measuring
tools such as a tape measure, ruler, electronic tape measure or the like and
notes the measurements (Block 801). The customer logs onto a website of a
window covering provider and selects a window covering product for each
measured architectural feature and the selection is transmitted to and
received
by CPU 102 or processor 202 (Block 802). The user may log onto the web site
from a user terminal 109 or from user interface 112 or from any device that
CA 02746780 2011-07-18
allows access to the website. A transaction record is created for that
customer
and transaction by CPU 102 or processor 202 and the transaction record is
stored in memory (Block 803). Based on the noted measurements, the customer
enters a cut size for each of the selected window coverings and the CPU 102 or
processor 202 receives the cut sizes (Block 804). The customer is prompted for
and transmits whether the mount is an inside mount or an outside mount. The
type of mount is received by the CPU 102 or processor 202 (Block 805). If
outside mount is selected the window covering is cut to the size input by the
customer. If inside mount is selected a lenght deduction, for example % inch,
is
subtracted from the size input by the customer (Block 806). The customer is
prompted for zip code, address or other geographical information and the
geographical information is received by the CPU 102 or processor 202 (Block
807). The CPU 102 or processor 202 determines the nearest retail outlet
location having a SIS machine such as by using a look up table stored in
memory
104 (Block 808). The identified retail outlet is displayed on the user
interface 112
or terminal 109 (Block 808). The customer may select the identified outlet or
the
customer may manually select another outlet. The selected outlet is recorded
in
the transaction record (Block 809). The customer is prompted for and confirms
the order and the confirmation is received by the CPU or processor (Block
810).
Payment may be made on-line or payment may be deferred until the customer
picks up the order at the retail outlet. The ordering process may include
verification of the customer payment information (Block 811).
The customer's order and/or complete transaction record is sent to the
selected
retail outlet 113 over network 108 (Block 812). Based on the order, the retail
outlet personnel use the SIS machine to cut the ordered window coverings to
the
customer's specified dimensions (Block 813) as previously described. The
cutting operation may be performed during off hours or non-peak hours to more
efficiently use personnel time.
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CA 02746780 2011-07-18
The customer is contacted by retail outlet 113 with a scheduled pick-up time
for
retrieving the cut window covering (Block 814). The customer travels to the
retail
outlet to pick up the cut window coverings (Block 815).
Another ordering methodology uses a photo-measuring kit to provide the
measurements for the architectural feature rather than using a traditional
measuring tool. The customer obtains a photo-measuring kit such as by ordering
a kit from a window covering manufacturer's website or picking up a measuring
kit at a retail outlet.
Referring to Figs. 29A, 296 and 30 the measuring kit includes at least one
measuring block 120 that includes a unique design 121 printed on a front
surface
thereof (Block 601). The measuring block may comprise any rigid material that
can be supported adjacent the architectural feature 123 being measured. The
design 121 comprises a unique pattern or design that is of known dimensions
and shape. The specific shape of the design is selected such that it is
unlikely to
be similar to any aspects of the architectural feature and thus will be
recognizable when viewed adjacent to the architectural feature.
The customer places one or more measuring blocks 120 in the architectural
feature being measured (Block 602) such that the measuring block 120 and
entire architectural feature 123 are visible. The measuring block 120 should
be
mounted as close to the same plane as the architectural feature being
measured.
Thus, for example, to measure a window the measuring block is mounted within
the frame of the window such as by taping it to the window glass. In one
embodiment at least two measuring blocks are used where each measuring
block is located with a designated edge 125 placed along the edge of the
architectural feature being measured. For example, for a window covering that
is
intended to be mounted on a window, the edges 125 of the blocks 120 are
placed along the inside frame of the window. A digital photograph of the
architectural feature 123 with the measuring blocks 120 mounted adjacent
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CA 02746780 2011-07-18
thereto is taken (Block 604). The customer may also place a unique designator
127 on the architectural feature while photographing it to identify the
building,
room and/or architectural feature to which that measurement relates (Block
603).
The customer logs onto a window covering provider website from a user terminal
109 over network 108 and the CPU 102 or processor 202 creates a transaction
record (Block 605). The system prompts the customer for, and the customer
enters, information related to the customer such as name, address, payment
information, internet address or the like and the CPU 102 or processor 202
receives this information and populates the transaction record unique to that
customer and transaction (Block 606). The customer is then prompted to upload
the photographs taken of the architectural feature with the measuring blocks
(Block 607). The customer uploads the photographs and the photographs are
received by the CPU 102 or processor 202 and stored in memory (Block 608).
The photographs are displayed to the customer on the customer interface 112
109 (Block 609). The customer is prompted to select the photograph of the
first
architectural feature for which a window covering is to be ordered (Block
610).
The customer selection is entered into the transaction record for the first
transaction (Block 611).
The system determines the dimensions of the architectural feature using the
photograph provided and selected by the user (Block 612). Referring to Fig.
31,
the system first determines the display resolution of the photograph (Block
1201).
Once the display resolution is determined the system determines the scale of
the
photograph (Block 1202). This is accomplished by counting the number of pixels
extending from one point on the unique design 121 on a measuring block to
another point on that design (Block 1203). Because the dimensions of the
design 121 are known, the system can determine the scale of the photograph by
calculating how many pixels extend between the two points on the design.
Because the distance between the two known points is known the system
calculates how much linear distance (scaling factor) each pixel represents
(Block
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CA 02746780 2011-07-18
1204). The system can then determine the distance between the reference
edges 125 of the measuring blocks 120 by counting the pixels between those
reference edges (Block 1205) and multiplying the number of pixels by the
scaling
factor (Block 1206). Thus, the system can automatically determine the
dimension of the architectural feature based on the photograph provided by the
user.
Referring again to Fig. 29B, the customer is then prompted to select a cut-to-
size
window covering for the selected architectural feature and the selection is
received and stored by the CPU 102 (Block 613). The system automatically
overlays the selected window covering on the selected architectural feature
and
displays the composite image on the user terminal 109 (Block 614). The
composite image provides the customer an opportunity to view how a specific
window covering will look on their specific architectural feature before the
customer purchases the window covering. The customer can change the style,
color, mount of the window covering to display various design options before
purchasing the window covering. The customer selects the desired window
covering and the selection is received and recorded by CPU 102 (Block 615).
The customer repeats these steps for all pictures (architectural features)
that
were uploaded into the system (Block 610).
Another ordering methodology will now be described where the user interacts
directly with the SIS machine. Referring to Fig. 32, the customer visits a
retail
outlet having a SIS machine (Block 1001). The customer physically shops the
retail outlet and selects the window covering they wish to purchase and cut
(Block 1002). The customer or store personnel (hereinafter "user") loads the
selected window covering into the SIS machine and initiates the cutting
process
by pushing a start button on the user interface 112 (Block 1003). The user
uses
user interface 112 to input information about the SIS product to be sized and
the
customer. A sample screen shot is shown in Fig. 34 that illustrates an
introductory screen that may be displayed on user interface 112 that provides
the
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CA 02746780 2011-07-18
user with options to cut the window covering, instructions on how to use the
system, or the like. If the user selects to cut a blind another screen shot
such as
that shown in Fig. 35 may be presented on user interface 112 that prompts the
user for information relating to the window covering to be cut. In the
illustrated
screen shot the user is prompted to select a type of blind. The information is
received by the CPU 102 or processor 202 and a transaction record is created
(Block 1004). Verbal and/or visual feedback on the selection may be given to
the
user at user interface 112. The user enters the cut size of the finished
product
and the CPU 102 or processor 202 receives this information and stores it in
the
transaction record (Block 1005). A sample screen shot is shown in Fig. 36 for
receiving the size information from the customer. Another screen shot is shown
in Fig. 37 showing a pop up screen for receiving the user measurements of the
architectural feature. The user is prompted for and enters into the system
inside
or outside mount and the CPU 102 or processor 202 receives and records this
information in the transaction record (Block 1006). A sample screen shot is
shown in Fig. 38 for receiving the inside/outside mount information. The
system
determines and displays on the user interface the size of the stock product
required for the desired cut product (Block 1007). A sample screen shot is
shown in Fig. 39 for displaying the stock product required for the desired cut
size
window covering. The user is directed to place the window covering into the
machine in the proper location and orientation. A sample screen shot is shown
in
Fig. 40 prompting the user to load the machine and for displaying a signal
that
the window covering was properly inserted. The user interface 112 may display
to the user a summary of the data related to the window covering including
size,
blind type, color or the like as shown in the screen shot of Fig. 41. The
machine
automatically cuts the blind to the desired size as previously explained. The
process may be repeated for each blind to be cut. A screen shot prompting the
user for another window covering or ending the cutting session is illustrated
in
Fig. 42. Once the user is finished, the SIS machine may print a receipt
containing the original size of the product before cutting, and the size the
product
have cut too.
CA 02746780 2011-07-18
Data of the transaction would be stored in the internal database 104
where the stored data may include, but not be limited to, original size of
product,
cut to size of product, date, time, store location, and blind drop. The data
captured by the SIS machine could be transferred to the blind manufacturer 111
or retailer outlet system 113 over network 108 at any time such that a
complete
record of the order and cutting operation is maintained as previously
described.
Because the PC is connected over network 108 to the blind manufacturer,
retailer or maintenance service provider, the information may be remotely
provided from any of these entities to and from the SIS machine. For example,
the SIS machine may provide a maintenance alert if its onboard diagnostics
determines that that a predetermined situation has occurred. The SIS machine
may also provide diagnostic information to a maintenance service provider. The
software running the SIS machine can also be remotely updated to change
operating parameters of the machine such as the feed speed and rotational
speed of the saws. The software running the SIS machine can also be remotely
updated to change the information displayed on the screen to the user
including
sales and marketing information.
Another ordering methodology uses the photo-measuring kit as previously
described. Referring to Fig. 33 the user photographs the architectural feature
123 and blocks 120 using a digital camera (Block 1101). The user brings the
camera or memory stick or the like having the photographs stored in memory to
a
retail outlet and connects the camera to the CPU 102 or processor 202 via a
USB port or places the memory stick in the appropriate memory card reader slot
or otherwise connects the camera memory to the CPU 102 or processor 202
(Block 1102). The customer inputs information to the user interface and the
CPU
102 or processor 202 creates a transaction record as previously described
(Block
1103). Overlay images may be displayed at user interface 112 such that the
customer can view the images of selected window coverings on their
photographs and select a desired window covering style as previously described
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(Block 1104). The CPU 102 or processor 202 calculates the stock size of the
window covering and displays to the user the size of stock window covering
that
is needed for the architectural feature shown in the user photograph (1105).
Another ordering methodology requires that the customer manually measure the
dimensions of the architectural feature to be covered using existing measuring
tools such as a tape measure or laser measure (Block 1106). The customer
brings the measurements to a retail outlet and manually inputs the measurement
information and other information at the user interface 112 and the CPU 102 or
processor 202 and a transaction record is created as previously described
(Block
1107). The CPU 102 or processor 202 calculates the required stock window
covering size (Block 1105).
The user then physically selects the indicated window covering from the retail
outlet inventory and places the window covering in the SIS machine as
previously described (Block 1108). The SIS machine operates automatically to
cut the window covering to the desired size as previously explained.
In one embodiment the SIS system could direct the customer to the appropriate
size window coverings (Block 1109). For example, the user interface 112
displays an identification of the location within the retail outlet by
alphanumeric
characters, color code, map or the like (Block 1110). Alternatively, the
system
may be connected to lights or other audio/visual indicators 135 associated
with
the inventory of window coverings where the indicator is actuated to identify
the
appropriate window covering (Block 1111). For example, the bin in which the
window coverings are stored is lighted to guide the customer to the
appropriate
window covering. Once the appropriate window covering is selected the
customer loads the window covering into the SIS machine (Block 1112) and the
SIS machine cuts the window covering as previously described.
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Because a transaction record is created for each customer and each transaction
the system operator has a complete record of each purchase. This information
can be used to confirm and verify individual purchases by individual
purchasers.
This information can also be used in the aggregate to determine market trends,
most common window sizes, most popular window treatments, buying habits and
other market trends. This information may also be used for inventory control.
For example, if the window covering provider has access to the data that
manufacturer can obtain real time information on hand inventory for any of its
customers and can restock depleted inventory and/or remove slow moving
inventory in a timely manner to ensure that the manufacturer's supply of
product
matches the purchasing patterns of a specific retailer's customers. The retail
outlet, if it has access to this information, can use the information for its
own
customers. All of this data may be sent to a remote location over network 108.
Because the user is a captive audience during the cutting operation the user
interface 112 can be used to present advertising information, news, or other
information to the customer. The information may be stored locally in the
operating system of the SIS machine such that the information relates to other
products sold by the retail outlet or window covering provider. Moreover,
because the operating system of the SIS machine is connected to the internet,
any information may be provided on the user interface by the system
administrator where the user interface 112 functions as the user terminal.
Specific embodiments of an invention are described herein. One of ordinary
skill
in the art will recognize that the invention has other applications in other
environments. In fact, many embodiments and implementations are possible.
The following claims are in no way intended to limit the scope of the
invention to
the specific embodiments described above.
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