Note: Descriptions are shown in the official language in which they were submitted.
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SPECIFICATION
Title of the invention
DECORATIVE DOOR FRAME ATTACHING APPARATUS
Field of the invention
The present invention relates to a decorative door
frame attaching apparatus for attaching a decorative
frame to a door.
Description of the Prior Art
Conventionally, residential doors having decorative
frames of square U shape attached to both front and back
surfaces have been widely used in general households
especially in Europe and the United States.
Conventionally, attaching operations of decorative frames
to such residential doors have been manually performed by
workers.
Although not the residential doors, there has been
proposed a method of manufacturing a wooden panel by
attaching a plate material to a surface of a wooden frame
(for example, Japanese Patent Laid-Open No. 8-39516).
Also, an apparatus for reversing a wooden panel has been
proposed, for example, in Japanese Patent Publication No.
7-102547.
As described above, conventionally, workers manually
attach decorative frames to residential doors. Thus,
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there is a problem that working efficiency is low.
Accordingly, an apparatus for attaching decorative frames
to a door has been conventionally demanded.
Summary of the Invention
In light of the circumstances described above, the
present invention according to claim 1 is a decorative
door frame attaching apparatus for attaching a decorative
frame to a top surface of a door, comprising conveying
means for conveying a door in a laid state; adhesive
applying means for applying an adhesive to a top surface
of the door on the conveying means; positioning means for
stopping the door being conveyed on the conveying means
at a predetermined position; transferring means for
transferring the decorative frame and superimposing the
decorative frame on the top surface of the door
positioned by the positioning means; and nailing means
for driving a nail into the decorative frame and fixing
the decorative frame to the door.
Because of the configuration, the attaching
operation of the decorative frames to the door can be
efficiently performed in comparison with the conventional
case.
Brief Description of the Drawings
FIG. 1 is a plan view illustrating one embodiment of
the present invention;
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FIG. 2 illustrates processing steps by a decorative
door frame attaching apparatus 1 shown in FIG. 1;
FIG. 3 is an enlarged view of a main portion of FIG.
1;
FIG. 4 is an elevation view of FIG. 3;
FIG. 5 is an enlarged view of a main portion of FIG.
1;
FIG. 6 is a right side view of a main portion of FIG.
1;
FIG. 7 is an elevation view of a main portion of FIG.
1;
FIG. 8 is a cross-sectional view along VIII-VIII of
FIG. 7;
FIG. 9 is a cross-sectional view along IX-IX of FIG.
7;
FIG. 10 is a left side view of FIG. 7; and
FIG. 11 is a right side view of FIG. 7.
Detailed Description of the Embodiments
An embodiment of the present invention will be
described below with reference to the drawings. In FIG.
1, reference numeral 1 denotes a decorative door frame
attaching apparatus, and the decorative door frame
attaching apparatus 1 attaches wooden decorative frames 3
sequentially to both front and back surfaces of a wooden
door 2.
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The decorative door frame attaching apparatus 1
comprises conveying means 4 for horizontally supporting
the door 2 in a laid state and conveying the door 2 on a
linear conveying path, assembling means 5 for assembling
the decorative frame 3 in a square U shape, transferring
means 6 for superimposing the assembled decorative frame
3 on the door 2 which is being stopped, nailing means 7
for driving nails from the decorative frame 3 at a
plurality of locations and fixing the decorative frame 3
to the door 2, and reversing means 8 for reversing the
door 2 upside down on the conveying path of the conveying
means 4. In the decorative door frame attaching
apparatus 1, an adhesive applying.position A where an
adhesive is applied to the top surface of the door 2 in a
laid state, an attaching position B where the decorative
frame 3 assembled in a square U shape is attached to the
door 2, and a reversing position C where the door 2 is
reversed upside down are set on the conveying path of the
conveying means 4_from an upstream side toward a
downstream side. Also, an assembling position D where
the decorative frame 3 is assembled in a square U shape
and a holding position E where the assembled decorative
frame 3 is held until being transferred to the attaching
position B are set so as to be disposed in parallel with
the conveying means 4. Furthermore, a evacuating
position F where the nailing means 7 is evacuated while
the decorative frame 3 is transferred is set on a side
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opposite to the holding position E across the attaching
position B.
As shown in FIG. 2(a) and FIG. 2(b), the door 2 as a
processing object of the decorative door frame attaching
apparatus 1 is composed of a square U-shaped frame member
2A and a body portion 2B which can be opened and closed
relative to the frame member 2A via hinges therein, and
is a vertically long rectangle as a whole. On the other
hand, as shown in FIG. 2(d) and FIG. 2(e), the decorative
frame 3 is composed of a right and left pair of height
direction members 3A and 3B, and a width direction member
3C for coupling the height direction members 3A and 3B.
Theses members are coupled in a square U shape by the
assembling means 5 at the assembling position D, and then,
are held at the holding position E.
First, processing steps by the decorative door frame
attaching apparatus 1 according to the present embodiment
will be described with reference to FIG. 1 and FIG. 2.
That is, when the door 2 is supplied onto the conveying
means 4 in a laid state, the door 2 is sequentially
conveyed to the downstream side by the conveying means 4.
The door 2 is temporarily stopped by first positioning
means 11 of the adhesive applying position A, and an
adhesive is applied to an upper side portion 2c of the
top surface (a surface directed upward) of the frame
member 2A of the door 2 by adhesive applying means 12
(FIG. 2(a)). Subsequently, an adhesive is applied to
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both side portions 2a and 2b of the top surface of the
frame member 2A of the door 2 in the course of being
conveyed to the attaching position B by the conveying
means 4 after being released from the first positioning
means 11. The door 2 is conveyed to the attaching
position B to be stopped and positioned there by second
positioning means 13, and the decorative frame 3 is
aligned and superimposed on the door 2 which is being
stopped by the transferring means 6. The frame member 2A
of the door 2 and the decorative frame 3 are thereby
bonded to each other with the adhesive, and a plurality
of nailing machines 10 of the nailing means 7
simultaneously drive nails into the decorative frame 3
superimposed on the frame member 2A of the door 2 as
described above (FIG. 2(b)).
The decorative frame 3 is thereby attached to the
top surface of the door 2, and then, the door 2 is
conveyed to the reversing position C in the adjacent
downstream side by the conveying means 4, and is reversed
180 degrees upside down by the reversing means 8 (FIG.
2(c)). The other surface to which the decorative frame 3
is not attached thereby becomes a new top surface. The
door 2 in this state is conveyed back to the adhesive
applying position A by the conveying means 4, and is
stopped by third positioning means 23. An adhesive is
applied to an upper side portion 2c of the new top
surface of the frame member 2A of the door 2 by the
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adhesive applying means 12 at the adhesive applying
position A, and an adhesive is applied to both side
portions 2a and 2b of the frame member 2A of the door 2
in the course of being conveyed to the attaching position
B from the adhesive applying position A by the conveying
means 4. Subsequently, the door 2 is conveyed again to
the attaching position B, and is stopped and positioned
by the second positioning means 13. In this state, a
second decorative frame 3 is aligned and superimposed on
the new top surface of the door 2 by the transferring
means 6, and then, the nailing machines 10 of the nailing
means 7 simultaneously drive nails from the decorative
frame 3.
Since the decorative frames 3 are thereby
respectively attached to the both front and back surfaces
of the door 2, the door 2 to which the attachment of the
decorative frames 3 has been completed is conveyed out to
the downstream side through the attaching position B and
the reversing position C by the conveying means 4.
Next, respective sections of the decorative door
frame attaching apparatus 1 will be described in sequence.
As shown in FIG. 1, the conveying means 4 comprises
a first roller conveyor 15 disposed at a fixed frame 14
of the adhesive applying position A, a second roller
conveyor 17 disposed at a fixed frame 16 of the attaching
position B, and a right and left pair of third roller
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conveyors 21 attached to a fixed frame 18 of the
reversing posit.ion C.
The roller conveyors 15, 17 and 21 are independently
rotated forwardly and reversely by respectively working
with an unshown driving source. When the roller
conveyors 15, 17 and 21 are forwardly rotated, the door 2
is conveyed from the upstream side to the downstream side
in the order of the adhesive applying position A, the
attaching position B, and the reversing position C. On
the other hand, when the roller conveyors 15, 17 and 21
are reversely rotated, the door 2 is conveyed back from
the reversing position C toward the adhesive applying
position A.
Mount surfaces of the both roller conveyors 15 of
the adhesive applying position A and 17 of the attaching
position B are set to the same height. The third roller
conveyors 21 of.,the reversing position C are moved
between upper horizontal positions and lower tilt
positions by working with right and left sets of air
cylinders 22 (see FIG. 7 and FIG. 9). When the door 2 is
conveyed into the reversing position C and before the
door 2 passes through the reversing position C, the third
roller conveyors 21 are supported in the upper horizontal
positions by the right and left air cylinders 22, and
mount surfaces of the third roller conveyors 21 at this
time are maintained at the same height as the mount
surfaces of the other respective roller conveyors 15 and
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17 (see FIG. 1, FIG. 7 and FIG. 9). On the other hand,
when the door 2 is reversed 180 degrees by the reversing
means 8 after the door 2 is conveyed into the reversing
position C, the third roller conveyors 21 are lowered to
the tilt positions by the respective right and left sets
of air cylinders 22 in advance (see FIG. 9). Accordingly,
the door 2 to be reversed by the reversing means 8 does
not collide with the third roller conveyors 21. The
third roller conveyors 21 are raised to the horizontal
positions by the respective sets of air cylinders 22
after the reversing operation of the door 2 by the
reversing means 8, and accordingly, the reversed door 2
is supported by the third roller conveyors 21 (FIG. 7 and
FIG. 9).
Next, the adhesive applying means 12 of the adhesive
applying position A comprises a movable discharge section
12A for discharging an adhesive while being moved in a
direction orthogonal to a conveying direction of the
first roller conveyor 15, and a pair of fixed discharge
sections 12B disposed at both sides of a top surface of
the fixed frame 14.
The first positioning means 11 comprises a stopper
11A provided so as to be capable of rising and setting in
the downstream side of the adhesive applying position A,
and a right and left set of positioning cylinders 11B for
performing positioning in a width direction by
sandwiching both right and left side portions of the door
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2 therebetween. An unshown door sensor for detecting the
door 2 is disposed in a certain position of the adhesive
applying position A. When the first roller conveyor 15
is forwardly rotated and the door 2 is detected by the
door sensor, the stopper ilA is raised and a lower end
portion of the door 2 which is a proceeding end thereof
is brought into abutment with the stopper 11A.
Subsequently, the both side portions of the door 2 are
sandwiched by the right and left positioning cylinders
11B, and the door 2 is thereby positioned in the width
direction and the conveying direction at the adhesive
applying position A.
Immediately after that, the povable discharge
section 12A of the adhesive applying means 12 discharges
an adhesive while being moved along the upper side
portion 2c of the frame member 2A of the door 2 by
working with an unshown movable member, and the adhesive
is thereby applied to the upper side portion 2c.
When the application operation of the adhesive to
the upper side portion 2c of the door 2 by the movable
discharge section 12A is finished, the sandwiching state
by the positioning cylinders 11B is released and the
stopper 11A is lowered down. The door 2 is conveyed to
the attaching position B by the first roller conveyor 15
being forwardly rotated at this time. Since an adhesive
is discharged from the fixed discharge sections 12B for a
predetermined amount of time after the stopper 11A is
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lowered down, the adhesive is applied to the both side
portions 2a and 2b of the frame member 2A of the door 2
in the course of being moved from the adhesive applying
position A to the attaching position B (see FIG. 2(a)).
Next, the second positioning means 13 of the
attaching position B comprises a stopper 13A capable of
rising and setting, and a right and left set of
positioning cylinders 13B for performing positioning by
sandwiching the both sides of the door 2 therebetween,
like the first positioning means 11.
The second roller conveyor 17 of the attaching
position B is forwardly rotated when the door 2 is
conveyed thereinto from the adhesive applying position A.
At this time, the stopper 13A of the second positioning
means 13 protrudes higher than the second roller conveyor
17. Therefore, when the door 2 is conveyed into the
attaching position B, the lower end portion of the door 2
is brought into abutment with the stopper 13A and the
door 2 is thereby stopped. Subsequently, the door 2 is
sandwiched by the right and left positioning cylinders
13B. The door 2 is thereby positioned in the width
direction and the-conveying direction at the attaching
position B, and thereafter, the second roller conveyor 17
is stopped.
In the state in which the door 2 is positioned at
the attaching position B as described above, the
decorative frame 3 is transferred from the holding
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position E to the attaching position B and is aligned and
superimposed on the door 2 by the transferring means 6,
and then, the nailing means 7 drives nails into the
decorative frame 3.
In the upstream side of the adhesive applying
position A, a stopper 23A capable of rising and setting
from a conveying surface of the first roller conveyor 15
is provided as the third positioning means 23, so as to
stop the door 2 being conveyed back on the first roller
conveyor 15 at the adhesive applying position A.
Next, as shown in FIG. 1, FIG. 3 and FIG. 4, the
assembling means 5 for assembling the decorative frame 3
comprises magazines 24A and 24B for retaining the right
and left height direction members 3A and 3B, which
constitute the decorative frame 3, respectively in a
laminated state, a magazine 24C for retaining the width
direction members 3C in a laminated state, clamp
mechanisms 25A and 25B for respectively take out the
height direction members 3A and 3B layer by layer in
synchronization with each other from respective bottoms
of the magazines 24A and 24B, a clamp mechanism 25C for
take out the width direction members 3C layer by layer
from a bottom of the magazine 24C, a right and left pair
of supporting sections 26 disposed adjacent to the
magazine 24C , and a conveying belt 28 for pushing the
decorative frame 3 after being assembled from the
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assembling position D onto a supporting member 27 of the
holding position E.
The conveying belt 28 is disposed in a range from a
position of the both supporting sections 26 through below
the magazine 24C of the width direction members 3C to the
holding position E. A pair of supporting rails 31 for
supporting the width direction member 3C is disposed
along the conveying belt 28. A right and left pair of
guiding members 32 is also disposed in both side portions
from one end side of the assembling position D to the
holding position E. The guiding members 32 can support
end portions of the height direction members 3A and 3B
when the both members 3A and 3B are took out and lowered
from the magazines 24A and 24B by the clamp mechanisms
25A and 25B. Also, when the decorative frame 3 after
being assembled is pushed from the assembling position D
to the holding position E, the both height direction
members 3A and 3B are supported by the guiding members 32,
which guide the movement thereof as well.
L-shaped positioning members 26A are attached facing
each other to top surfaces of the supporting sections 26.
The respective members 3A to 3C took.out from the
respective magazines 24A, 24B and 24C are positioned by
the positioning members 26A.
That is, first, the clamp mechanism 25C is raised a
certain amount, and the lowest width direction member 3C
in the magazine 24C is thereby grasped and took out by
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the clamp mechanism 25C. After that, the clamp mechanism
25C is moved forward to a position of the positioning
members 26A by a movable member 33. 45-degree corner
portions which are both ends of the width direction
member 3C are thereby positioned in the both positioning
members 26A (FIG. 1 and FIG. 3). Subsequently, the clamp
mechanisms 25A and 25B are raised a certain amount. The
lowest height direction members 3A and 3B in the
magazines 24A and 24B are thereby grasped and took out by
the clamp mechanisms 25A and 25B, and then, the entire
clamp mechanisms 25A and 25B are moved forward toward the
positioning members 26A by a movable member 34.
Respective 45-degree corner portions of the both height
direction members 3A and 3B are thereby inserted to the
both positioning members 26A, and are made to abut the
45-degree corner portions of the both end portions of the
width direction member 3C (see FIG. 2(d) and FIG. 2(e)).
In the state in which the 45-degree corner portions of
the respective adjacent members 3A to 3C are made to abut
each other, an unshown nailing machine drives nails at
two locations over the 45-degree corner portions of the
respective adjacent members 3A to 3C (see FIG. 2(e)).
Since the assembling of the decorative frame 3 of square
U shape is thereby completed, the respective clamp
mechanisms 25A,.25B and 25C are lowered a certain amount
after releasing the grasping state of the respective
members 3A to 3C, and are returned to positions below the
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respective magazines 24A to 24C by the movable members 33
and 34.
The decorative frame 3 after being assembled is
supported by the supporting sections 26, the guiding
members 32, and the supporting rails 31, and also, the
width direction'member 3C of the decorative frame 3 is
mounted on the conveying belt 28 which is being stopped.
When the conveying belt 28 travels a predetermined
amount in a forward rotation direction from this state by
an unshown motor, engagement claws 28A attached to the
conveying belt 28 are brought into abutment with the
width direction member 3C of the decorative frame 3 to
push the width direction member 3C toward the holding
position E. Accordingly, the entire decorative frame 3
is guided by the both guiding members 32 and is pushed
from the assembling position D onto the supporting member
27 of the holding position E by the conveying belt 28.
Subsequently, the conveying belt 28 is reversely rotated
a certain amount by the unshown motor, and thus, the
engagement claws 28A are returned to positions outward
from the positicning members 26A. The decorative frame 3
of square U shape after being assembled is held on the
supporting member 27 of the holding position E until
being transferred by the transferring means 6.
The assembling means 5 of the present embodiment
couples the respective members 3A to 3C to assemble the
decorative frame 3 of square U shape at the assembling
=.
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position D, and then, holds the decorative frame 3 at the
holding position E as described above.
As the assembling means 5, other components than the
supporting member 27 of the holding position E may be
omitted. That is, in the case, the decorative frame 3 of
square U shape assembled in advance in another place may
be held on the supporting member 27 of the holding
position E.
Next, the transferring means 6 and the nailing means
7 will be described with refereince to FIG. 4- FIG. 6. A
supporting frame 35 is horizontally disposed in a
direction orthogonal to the conveying direction of the
conveying means 4 above the both holding positions E and
F which are provided by sandwiching the attaching
position B therebetween. A rectangular movable frame 36
is mounted on the supporting frame 35. The movable frame
36 is moved along a longitudinal direction of the
supporting frame 35 by working with a driving mechanism
37. The driving mechanism 37 is configured to forwardly
and reversely rotate a timing belt 39B suspended along a
moving path of the movable frame 36 of the supporting
frame 35 via a timing belt 39A by a motor 38 as a driving
source, and is coupled to a coupling section 36A of the
movable frame 36. When the motor 38 is forwardly and
reversely rotated, the movable frame 36 is thereby moved
back and forth along the longitudinal direction of the
supporting frame 35.
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The transferring means 6 is attached to one end (the
holding position E) side of the longitudinal direction of
the movable frame 36, and the nailing means 7 is attached
to the other end (the holding position F) side. When the
movable frame 36 is moved back and forth a predetermined
amount along the supporting frame 35 by the driving
mechanism 37, the transferring means 6 and the nailing
means 7 are moved the same distance in synchronization
with each other in the direction orthogonal to the
conveying means 4. That is, when the transferring means
6 is moved from the holding position E to the attaching
position B via the movable frame 36 by the driving
mechanism 37 from the state in which the transferring
means 6 is located in the holding position E and the
nailing means 7 is located in the attaching position B,
the nailing means 7 is moved from the attaching position
B to the holding position F. On the other hand, when the
nailing means 7 is moved from the holding position F to
the attaching position B via the movable frame 36 by the
driving mechanism 37, the transferring means 6 is moved
from the attaching position B to the holding position E.
The transferring means 6 comprises a frame member 44
liftably supported via a lifting mechanism 43 by the
movable frame 36, and four clamp members 45 disposed on
the frame member 44. The lifting mechanism 43 comprises
four guiding members 43A coupled to the frame member 44,
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and a lifting cylinder 43B for lifting up and down the
frame member 44.
When the fr.ame member 44 is lifted down to a descent
position by the lifting mechanism 43 in the state in
which the transferring means 6 is located in the holding
position E, the both height direction members 3A and 3B
of the decorative frame 3 being held at the holding
position E are grasped by the four clamp members 45. The
frame member 44 is lifted up to an ascent position from
this state by the lifting mechanism 43, and the
decorative frame 3 grasped by the clamp members 45 is
thereby lifted up above the supporting member 27.
Subsequently, the movable frame 36 is moved a
predetermined distance toward the other holding position
F by the driving mechanism 37. Accordingly, the
decorative frame 3 retained by the clamp members 45 of
the transferring.,means 6 is located above the attaching
position B, and the nailing means 7 is moved from the
attaching position B to the holding position F. Since
the door 2 is conveyed into the attaching position B and
is positioned by the second positioning means 13 by this
time, the decorative frame 3 retained by the clamp
members 45 of the transferring means 6 is supported above
and adjacent the door 2.
The frame member 44 and t.jzs clamp members 45 are
lifted down to the descent position from this state by
the lifting mechanism 43 of the transferring means 6, and
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thus, the decorative frame 3 of square U shape is
superimposed on the upper side portion 2c and the both
side portions 2a and 2b of the frame member 2A of the
door 2. Since the adhesive has been already applied to
the both side portions 2a and 2b and the upper side
portion 2c of the top surface of the door 2, the
decorative frame 3 and the door 2 are bonded to each
other with the adhesive (see FIG. 2(b)).
Subsequently, the clamp members 45 of the
transferring means 6 release the grasping state of the
decorative frame 3, and also, the frame member 44 and the
clamp members 45 are lifted up to the ascent position by
the lifting mechanism 43. As described above, the
decorative frame 3 is transferred from the holding
position E to the attaching position B, and is positioned
above and superimposed on the door 2 by the driving
mechanism 37 and the transferring means 6.
The transferring means 6 which released the
decorative frame 3 is then moved from above the attaching
position B to the holding position E by the driving
mechanism 37, and stops at the holding position E above a
new decorative frame 3. Thereafter, the frame member 44
and the'clamp members 45 are lifted down by the lifting
mechanism 43 of the transferring means 6, and the new
decorative frame 3 is thereby grasped by the clamp
members 45.
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On the other hand, the nailing means 7 is moved from
the holding position F to the attaching position B and is
stopped above and adjacent the door 2 and the decorative
frame 3 at the same time as when the transferring means 6
is returned to the holding position E as described above.
The plurality of,,nailing machines 10 of the nailing means
7 drive nails into the decorative frame 3 at the
attaching position B.
As shown in FIG. 5 and FIG. 6, the nailing means 7
comprises a rectangular frame member 46 liftably attached
to the movable frame 36, a total of eight nailing
machines 10 attached to the frame member 46 (see FIG.
2(b) and FIG. 6), and a lifting mechanism 47 for lifting
up and down the frame member 46. The lifting mechanism
47 comprises a motor 48 as a driving source, a nut member
51 rotated forwardly and reversely via a timing belt 49
and a pair of timing pulleys 50, a lifting shaft 52 whose
screw portion in an upper side is screwed with the nut
member 51 and whose lower portion is coupled to the frame
member 46, and four lifting guides 53 for guiding the
lifting operation, of the frame member 46. By forwardly
and reversely rotating the motor 48 of the lifting
mechanism 47 a certain amount, all the nailing machines
can be lifted up and down to an ascent position and a
descent position. In the present embodiment, two of the
nailing machines 10 are attached to one of short sides of
the frame member 46 and three of the nailing machines 10
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are attached to each of long sides thereof (see FIG.
2(b)). The configuration of the nailing machine 10
itself is the same as the one which is conventionally
well known.
When the nailing means 7 is located above the
attaching position B by the driving mechanism 37 as
described above, the entire nailing means 7 is lifted
down to the descent position by the lifting mechanism 47.
The total of eight nailing machines 10 are thereby
located above and adjacent the decorative frame 3 of
square U shape superimposed on the door 2 (FIG. 2(b) and
FIG. 6) . In this state, all the nailing machines 10
simultaneously drive nails. Furthermore, the total of
six nailing machines 10 disposed in the long sides of the
frame member 46 are configured to be moved in parallel a
predetermined amount along the long sides of the frame
member 46 by an unshown movable mechanism after driving
nails once, and simultaneously drive nails again there.
As described above, the nailing machines 10 of the
nailing means 7 drive nails at a total of 14 locations to
the door 2 and the decorative frame 3 which are being
stopped at the attaching position B, and the decorative
frame 3 is thereby rigidly fixed to the top surface of
the door 2.
Subsequently, the nailing means 7 is lifted up to
the ascent position by the lifting mechanism 47, and then,
the nailing means 7 is moved from the attaching position
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B to the holding position F to be in the holding state
there, by working with the driving mechanism 37 at the
time of transferring the next decorative frame 3 from the
holding position E to the attaching position B.
On the other hand, the door 2 to which the
attachment of the decorative frame 3 has been completed
at the attaching position B as described above is
released from the positioning state by the second
positioning means 13, and also, is conveyed into the
reversing position C from the attaching position B by the
forward rotation operation of the second roller conveyor
17.
The third roller conveyors 21 capable of oscillating
between the upper horizontal positions and the lower tilt
positions are disposed at the reversing position C as
described above. The door 2 is conveyed into the
reversing position C from the attaching position B in the
state in which the third roller conveyors 21 are in the
upper horizontal state, and also, are forwardly rotated
by an unshown driving source. At this time, the third
roller conveyors 21 are stopped after being forwardly
rotated a certain amount, and thus, the door 2 is stopped
in a predetermined position in the conveying direction on
the third roller conveyors 21.
As shown in FIGS. 7 to 11, the reversing means 8
comprises a pair of supporting frames 55 disposed at the
fixed frame 18 so as to face each other with a
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predetermined distance therebetween in the conveying
direction, a rotating plate 56 rotatably disposed in a
center portion of the respective supporting frames 55, a
door retaining mechanism 54 attached to the respective
rotating plates 56, and a rotating mechanism 59 for
rotating the both rotating plates 56 180 degrees around a
horizontal rotation center as the center.
The respective supporting frames 55 are composed of
a plate-like member whose hollow portion is formed to be
circular. The respective rotating plates 56 have a
circular disc shape having approximately the same size as
the circular hollow portion of the supporting frame 55.
In a center portion of the respective rotating plates 56,
there is formed a rectangular opening 56A through which
the decorative frame 3 and the door 2 can sufficiently
pass.
Three engaging rollers 60 are rotatably attached to
an outer circumference portion of the respective rotating
plates 56, and a groove in an outer circumference portion
of the engaging roller 60 engages with a circular inner
circumference portion 55A of the supporting frame 55.
The both rotating plates 56 can be thereby guided by the
inner circumference portions 55A of the supporting frames
55 to be forwardly and reversely rotated.
The door retaining mechanism 54 comprises a first
grasping mechanism 57 for grasping the door 2 from a
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vertical direction, and a second grasping mechanism 58
for grasping the door 2 from a lateral direction.
A plate-like member 61 is respectively horizontally
coupled to a lower margin portion of the respective
openings 56A of the respective rotating plates 56.
Furthermore, a pair of lifting cylinders 62 is attached
to a wall surface of the respective rotating plates 56 so
as to face the respective plate-like members 61. A
grasping member 62A composed of an elastic body is
attached to a top end of the respective lifting cylinders
62. The first grasping mechanism 57 is constituted by
the plate-like member 61, the lifting cylinders 62, and
the grasping members 62A.
Also, a plate-like member 63 is respectively
vertically coupled to a side margin portion of the
respective openings 56A of the respective rotating plates
56. A cylinder 64 is attached to the wall surface of the
respective rotating plates 56 so as to face the plate-
like member 63, and a grasping member 64A composed of an
elastic body is also attached to a top end of the
cylinder 64. The second grasping mechanism 58 is
constituted by the plate-like member 63, the cylinder 64,
and the grasping member 64A.
When the both rotating plates 56 are in normal
positions before being reversed, the plate-like members
61 are located in a lower side and are horizontal, and
the grasping members 62A are located in an upper side as
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shown in FIG. 7 and FIG. 10. The height of the plate-
like members 61 at this time is slightly lower than the
height of the mount surfaces of the third roller
conveyors 21 in the horizontal state (FIG. 7).
When the both rotating plates 56 are in the normal
positions, the door 2 is conveyed into the reversing
position C from the attaching position B as described
above. Therefore, the door 2 with the decorative frame 3
fixed to the top surface passes through the opening 56A
of the rotating plate 56 in the upstream side, is
conveyed onto the third roller conveyors 21 of the
reversing position C, and is stopped at a predetermined
position (FIG. 7).
Subsequently, as shown in FIG. 9, the third roller
conveyors 21 are lowered by the air cylinders 22 to be in
the tilt state. Therefore, lower portions of both ends
in a longitudinai direction of the door 2 are supported
by the plate-like members 61 of the both rotating plates
56. After that, the cylinders 64 of the second grasping
mechanisms 58 of the both rotating plates 56 are moved
forward, and the both sides of the door 2 are sandwiched
by the respective grasping members 64A. Since the
lifting cylinders 62 of the first grasping mechanism 57
of the respective rotating plates 56 are then moved
forward in synchronization with each other, one end of
the door 2 in the longitudinal direction is grasped by
the grasping members 62A and the plate-like member 61 of
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the rotating plate 56 in the upstream side, and the other
end of the door 2 in the longitudinal direction is
grasped by the grasping members 62A and the plate-like
member 61 of the rotating plate 56 in the downstream side.
As described above, the door 2 is positioned in the width
direction and the vertical direction in the reversing
position C (FIG. 8, FIG. 10, and FIG. 11).
The door 2 in the reversing position C is thereby
retained by the door retaining mechanism 54 of the
respective rotating plates 56. The both rotating plates
56 are united by the rotating mechanism 59 in this state,
and are reversed 180 degrees in a clockwise direction in
FIG. 10.
The rotating mechanism 59 comprises a sector gear 75
coupled to the wall surface of the rotating plate 56 and
extending in a half arc, and a pinion 76 meshing with the
sector gear 75 and rotated in forward and reverse
directions by working with a motor 74. When the pinion
76 is forwardly rotated a predetermined amount by working
with the motor 74, the both rotating plates 56 and the
door 2 retained by the door retaining mechanisms 54 are
reversed 180 degrees. Since the third roller conveyors
21 are being lowered at this time, the door 2 is reversed
180 degrees without abutting the third roller conveyors
21, and the surface to which the'decorative frame 3 has
not been attached becomes the new top surface.
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The rotation axis when the door 2 is reversed 180
degrees by the rotating mechanism 59 corresponds to a
virtual line connecting axis of the'both rotating plates
56. The rotation axis is horizontal and is in parallel
with the conveying direction of the conveying means 4.
When the door 2 is reversed by the rotating
mechanism 59 of the reversing means 8, the third roller
conveyors 21 are raised from the tilt positions to the
upper horizontal positions by the air cylinders 22.
Subsequently, the second grasping mechanisms 58 of
the rotating plates 56 release the grasping state of the
both side portions of the door 2, and the grasping
members 62A of the lifting cylinders 62 of the first
grasping mechanism 57 of the respective rotating plates
56 are lowered to release the grasping state of the door
2. The door 2 is thereby supported on the third roller
conveyors 21. The door 2 is reversed 180 degrees by the
reversing means 8 of the reversing position C, and then,
is supported by the third roller conveyors 21 as
described above.
Since the third roller conveyors 21, and the both
roller conveyors 15 and 17 are then reversely rotated,
the door 2 is conveyed back from the reversing position C
via the attaching position B to the adhesive applying
position A.
When the door 2 is conveyed out from the reversing
position C, the totating mechanism 59 of the reversing
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means 8 rotates the pinion 76 in a direction opposite to
the direction before via the motor 74. Accordingly, the
both rotating plates 56 are rotated 180 degrees in a
direction opposite to the direction before, and are
returned to the normal positions from the reversed
positions.
On the other hand, the door 2 returned to the
adhesive applying position A is brought into abutment
with the stopper 23A of the third positioning means 23 to
be stopped, and is also positioned at the adhesive
applying position A in the width direction of the
conveying means 4 by the positioning cylinders 11B of the
first positioning means 11.
Thereafter, the decorative frame 3 is attached to
the new top surface of the door 2 as in the processing
steps of the first decorative frame 3 to the door 2
described above. That is, first, the adhesive applying
means 12 applies an adhesive to the top surface of the
frame member 2A of the door 2 at the adhesive applying
position A (see FIG. 2(a)). The second decorative frame
3 is positioned and superimposed by the transferring
means 6 on the door 2 which is being stopped at the
attaching position B by the second positioning means 13,
and then, the nailing means 7 drives nails into the
second decorative frame 3 at predetermined locations (see
FIG. 2(b)).
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The attachment of the decorative frames 3 to the
both front and back surfaces of the door 2 is thereby
completed. The door 2 to which the decorative frames 3
have been attached to the both front and back surfaces as
described above is conveyed from the attaching position B
via the reversing position C to the downstream side
thereof by rotating the second roller conveyor 17 and the
third roller conveyors 21 in the forward direction.
As described above, the decorative door frame
attaching apparatus 1 according to the present embodiment
can attach the decorative frames 3 to the both front and
back surfaces of the door 2 being conveyed in a laid
state. Accordingly, according to the present embodiment,
the attaching operation of the decorative frames 3 to the
door 2 can be efficiently performed in comparison with
the conventional case where the attachment of the
decorative frames 3 to the door 2 is manually performed.
Furthermore, the door 2 as a product to which the
decorative frames 3 have been attached has an uniform
appearance and coupling state since an attaching position
or a fixing state of the decorative frames 3 is uniform.
Although the door 2 is returned-to the adhesive
applying position A after being reversed by the reversing
means 8 and the second decorative frame 3 is attached to
the new top surface in the above embodiment, a following
process may be performed. That is, another one set of
the adhesive applying means, the transferring means, the
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nailing means or the like similar to those in the above
embodiment is disposed in the downstream side from the
reversing means 8. When the first decorative frame 3 is
coupled to the door 2 and the door 2 is reversed by the
reversing means 8, the door 2 may be conveyed to the
downstream side, and the second decorative frame 3 may be
attached to the new top surface of the door 2 by the
adhesive applying means, the transferring means, and the
nailing means disposed there.
