Note: Descriptions are shown in the official language in which they were submitted.
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~IETHOD FO:R STICKING .A BELT-LIKE MEMBER AND APPARATUS THEREFORE
BACKGROUND OF THE INVENTION;
Field of the invention:
The present invention relates to a method Eor applying ~
belt-like member and an apparatus for practicing the same
method, which are available generally in every step o~ the
tire forming proces~ but mainly usefull for stieking a belt-
like member made of a rubber sheet having a large number of
cords buried in parallel therein onto a forming drum.
Description of the prior art:
Generally in the manufacture of tires, the steps of
cutting a rubber-coated cord-reinforced cloth having wires
inserted therein at a predetermined bias angle or at a right
angle, along the wires into a predetermined length to form an
elongated belt-like member, wrapping the thus formed belt-
like member around a forming drum, and joining the leading
end and the trai1ing end of the member, axe involved.
In the prior art, normally the belt-like member was
wrapped around and stuck to a forming drum while it~ length
in the longitudinal direction wa~ being appropriately
stretched so that when it had been finished to be wrapped,
the leading end and the trailing end thereof might coincide
with each other.
However, the cut angle of the cut end of the belt-like
member had a distribution, hence the cut angles of the
leading end edge and the trailing end edge were not always
consistent, and it was fairly probable that even if one
should try to make the leading and trailing end edges
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- _oincide with each other, there would occur deviation or
overlap.
Therefore, an attempt of correcting the cut surface of
the belt-like member 80 as to have a predete~min~d
inclination angle (Laid-Open Japane~e Patent Specifiaation
No. 63-116838 (1989)) wa~ propo~ed.
; According to this proposal in the prior art, it wa~
attempted that a swingable correcting arm is made to butt
against the cut surfaces at the leading and trailing ends of
the cut belt-like member to correct the inclination angles of
these cut surfaces to a predetermined angle, thereby the
inclination angles of the end surfaces at the leadîng end and
at the trailing end are made to coincide with each other, and
thus joining of the opposite end gurface~ can be effected
properly.
However, since the leading and surface and the trailing
end surface of the belt-like memher which are respectively
cut with a certain inclination angle are forcibly corrected
to a predetermined angle by making the~e end surface~ butt
against a correcting arm, for instance, as shown in ~ig.
21~a) if an end sur~ace having a cut angle of 71 degrees
should be forcibly corrected so as to have a predetermined
angle of 70 degrees, then an acute angle portion at the tip
end would somewhat protrude outwardly, and when such both end
portion~ are joined together, an inconvenience oE producing a
~tep-shaped deviation d as shown in Fig. 21(b3 i~ liable to
occur.
In addition, in order to treat a member a~ter cutting
into a predetermined length, a separate treatment device
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ecome~ necessary, hence the apparatus become~ large-sized, a
necessary space i~ largely occupied, and also an installation
cost would be increased.
SUMMARY OF THE INVENTION:
The present invention has been worked out in view o~ the
above-mentioned background of the invention, and one object
of the invention is to provide a method and an apparatu~ for
sticking a belt-like member, in which a step-shaped deviation
of the cut ends of the belt-like member at a joining portion
can be prevented and small sized low-cost apparatuse~ can be
realized.
According to one feature of the present invention, there
is provided a method for sticking a belt-like member, wherein
a belt-like member prepared by cutting a raw material of the
belt-like member on a conveyor at two front and rear
locations, is conveyed by the conveyor, wrapped around a
cylindrical drum and ~tuck to the drum~ which method
comprises the ~teps of cutting the raw material of the belt-
like member on an anvil placed on the conveyor while being
fixedly attracted to a conveyor belt to form a lsading end
edge of the belt-like member and ~imultaneouqly measuring an
inclination angle of the cut line; holding the leading end
portion of the belt-like member, separating it from the
anvil, conveying it as synchronized with the conveyor up to a
predetermined position beyond the anvil, and then fixedly
attracting it onto the conveyor belt; conveying the raw
material of the belt-like member having the leading end edge
formed by a predetermined di~tance by means of the onveyor
belt; cutting this raw material of the belt-like mPmber at
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~ne predetermined position to form a trailing end edge of the
belt-like member and simultaneously measuring an inclination
angle of the cut line; holding the trailing end portion of
the belt-like member separating it from the anvil, ~nd
conveying it as synchronized with the conveyor up to a
predetermined position beyond the anvil; changing the holding
attitude of the trailing end portion on the basis of the
measured inclination angles of the respective cut lines to
correct the inclination angle of the cut line of the trailing
end edge so as to coincide with the inclination angle of the
cut line of the leading end edge; transferring the trailing
end portion of the belt-like member onto the conveyor belt
while maintaining the thus corrected configulation of the
trailing end portion and fixedly attracting it to the
conveyor belt; ~eparating the succeeding raw material of the
belt-like member from the conveyor belt; conveying the belt-
like member cut out of the raw material by means of the
conveyor belt; making the cylindrical drum attract the
leading end portion of the belt-like member; and wrapping and
sticking the belt-like member around and to the cylindrical
drum by rotating the cylindrical drum in synchronism with
traveling of the conveyor belt.
According to the present invention, since an inclination
angle of the cut line at the leading end edge of a belt-like
member i8 measured previously and after cutting of the
trailing end Pdge only the inclination angle of the cut line
at the trailing end is corrected by changing a holding
attitude of the trailing end portion so as ~o conform to the
measured inclination angle of the cut line at the leading end
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~dge, step-shaped deviation would hardly occur, and as the
belt~like member is stuck to a cylindrical drum while always
maintaining the comfiguration of the end portionst joining of
the leading end and the trailing end can be ef~ected
properly
According to another feature o the present invention,
thPre is provided an apparatus for sticking a belt-like
member, wherein a belt-like member prepared by cutting a raw
material of the belt-like membex on a conveyor is conveyed,
wrapped around a cylindrical drum and stuck thereto, which
apparatus comprises cut means for cutting a raw material of
the belt-like member, measure means for measuring an
inclination angle of the cut line, hold means for holding the
end portions before and behind the cut line of the belt-like
member respectively and independently while maintaining their
configurations, correction means capable of correcting an
inclination angle of a trailing end edge of the belt-like
member by changing the attitude of the hold means on the
basis of the results of measurement by the measure means, and
separation means capable of separating the raw material of
the belt-like member, that has not yet been cut, from the
belt conveyor.
According to the pre~ent inventionJ the belt-like member
is cut by the cut mean~ while it is fixed on an anvil by
attraction means, upon cutting the leading end edge an
inclination angle of the cut line is measured by the mea3ure
means, and after cutting of the trailing end edge, the
attitude of the hold means which holds the trailing end
portion is changed by the correction mean on the basis of
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.
: he results of measurement by the aforementioned measure
means, thereby only the trailing end surface oE the belt-like
member can be corrected so as to conform to the inclination
angle of the cut line of the leading end surface, and ~ince
only the trailing end portion is corrected, st~p-~haped
deviation would hardly occur,
In addition, it i~ pos~ible that the raw material o th2
belt-like member which has not yet been cut is separated from
the conveyor belt by the separation meansl and only the cut
belt-like member is conveyed and ~tuck onto the cylindrical
drum.
Furthermore, since the end portions of the belt-like
member has its configuration always maintained by the
attraction means and the hold means, when the belt-like
member has been stuck onto the cylindrical drum, the leading
and trailing end surfaces can be properly aligned.
Also, compactization and reduction of a cost of the
apparatus can be achieved.
The above-mentioned and other objets, features and
advantages of the present invention will become more apparent
by reference to the following dPscription of one preferred
embodiment of the invention taken in conjunction with the
accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS~
In the accompanying drawings:
Fig. 1 is a general side view of a belt-like member
sticking àpparatus according to one preferred embodiment of
the present invention;
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Fig. 2 iS a plan view partly omitted of the same
apparatus;
Fig. 3 iS a schematic view showing an arrangement of
magnet blocks provided within a conveyor;
Fig. 4 is a cross-section view taken aling li~e IV-IV in
Fig. l as viewed in the direction of arrows;
Fig. 5 is a plan view showing a traveling mechanism in a
traveling support base,
- Fig. 6 is a side view of the same;
Fig. 7 is an end view as viewed in the direction of an
arrow V~in Fig, 5;
Fig. 8 iS a side view partly in cross-section o an
attraction device;
Fig. 9 is a plan view of the same device;
Fig. lO is a front view partly in cross-section of the
same device;
Fig. 11 i9 a plan view of an attraction hand;
Fig. 12 is a cross-section view taken along line X1I-XII
in Fig. 11 as viewed in the direction of arrows;
Fig. 13 i8 a cross-section view taken along line X ~-X
in Fig, 12 as viewed in the direction o~ arrowsr
Fig. 14 is a cross-section view ~aken along line XIV-XIV
in Fig. 12 as viewed in the direction of arrsws;
Fig. 15 is a schematic block diagram of a control system
for the illustrated apparatus;
Figs, 16(a) to lS~i) are schematic views showing the
successive steps of the peration of the illustrated
opparatus;
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Fig . 17 is a plan view ~howing a modification of a
cutting device;
Fig. 18 is a side view of the ~ame;
Fig. 19 is a cross-section view taken along line I X X-
1 X X in Fig. 17 as viewed in the direction oE arrow~,
Fig. 20 is an end view partly in cross-section taken
along line X X-X X in Fig. 17 a5 vi~wed in the direction o~
arrows; and
Figs. 21(a) and 21(b) are schematic views showing the
states of the end portions o~ a belt like member when the end
portions are joined together through a method in the prior
art.
DESCRIPTION OF THE PREFERRED EMBODIMENT:
Now the present invention wil~ be described in greater
detail in connection to one preferred embodiment of the
invention illustrated in Figs. 1 to 16.
A belt-like member sticking apparatus according to one
preferred embodiment of the present invention is generally
illustrated in Figs. 1 and ~. In these figures, reference
numeral 1 designates a drum, which is rotatably supported
from a frame not shown, and is rotated by a DC s~rvo motox 3
associated with reduction gears that is installed on a floor
surface 2.
On the floor surface 2 behind the drum 1, four truts 4
are erected at ~he front and at the rear on the left and
right sides, and between the adjacent ~truts 4 a~e mounted a
horizontal support frame 4a.
Between the left and right struts 4 i5 disposed an
elongated conveyor 6, a support shaft 7 directed in the left
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.nd right horizontal direction~ i8 fixed to brackets 6b
suspended from the centers of the conveyor frames 6a of the
same conveyor 6, and this support shaft 7 is rotatably
supported by bearings S fi~edl~ secured respe~tively to the
pair of left and right struts 4 at the ront.
Accordingly, the conveyor 6 i~ swingable about the
support shaf t 7, and the front ~nd portion of the conveyor 6
can move up and down under the aforementioned drum 1.
On the rear strut~ 4 are provided brackets 4b as
projected backwardR, at the tip end portion of the bracket 4b
is pivotably supported a lower base end portion of a cylinder
22 directed in the vertical directions, and a tip end of an
upwardly projected rod 23 of the same cylinder 22 i~
rotatably engaged with the lower surface of the conveyor
frame 6a. Hence, the conveyor 6 can be made to swing by
driving the cylinder 22 and extending and contracting the rod
23.
In the conveyor ~, a pair o~ front and rear rollers 10
and 11 are rotatably supported via bearings 8 and 9 provided
respectively at the front and rear ends of the conveyor frame
6a, and between these rollers 10 and 11 is stretched a
conveyor belt 12.
Under the conveyor belt 12 are disposed receiver roller~
14 at four locations separated by appropriated interval~, and
these receiver rollers 14 are rotatably mounted between
brackets 14a suspended from the left and right conveyor
frames 6a and prevent the conveyor b lt 12 f rom sagging .
On the lPft side conveyor frame 6a, a D.C. servo motor
13 is fixed to its outside, it is adapted to drive a:pulley
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~b provided on the outside of the right side conveyor frame
6a as projected therefrom, in correspondence to the pulley
13b a pulley 13c i~ provided and a pulley 13d i9 fitted to
the rotary shaft of the above~de~cribed roller 10, and bel~
13e is stretched among the pulleys 13b, 13c and 13d (See Fig.
2). Accordingly, by driving the ~ervo motor 13, the roller
10 is rotated via the belt 13e and thereby the conveyor belt
12 can be revolved.
Between the conveyor belts 12 on the upper side and on
the lower side are disposed plate-shaped magnet blocks 17,
18~ 19, 20 and 21 as shown in Fig. 3, the magnet block 17 at
the foremost position is rectangular and longest, the next
rear magnet block 18 is rectangular and short, further
succeeding magnet blocks 19, 20 and 21 have a rectangular
shape as a whole, .in which a parallelogram-shaped magnet
block 20 is disposed obli~uely at the center and triangular
magnet blocks 19 and 21 are disposed before and behind the
magnet block 20. Except for the magnet block 17, all the
magnet blocks 18,: 19, 20 and 21 are independently supported
in a vertically movable manner.
At the top of the struts 4, a pair of left and right
upper frames 25 are mounted as inclined so as to somewhat
descend forwards, from the same upper frames 25 is sùspended
a left and right positioning device, al~o between the
respective upper frames 25 is mounted a traveling support
base 45 so a~ to be allowed to travel back and forth, and as
shown in Fig. 5, a cutting device 60 and an attraction device
120 are suspended above the conveyor belt 12 from ~he same
~raveling support base 45.
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Figs. 2 and 4 are a plan view of this belt-like member
sticking apparatus in which a part such as the traveling
support base and the like is omitted, and a ~ross-section
view taken along line IV-IV in Fig. 1, and with ~eference to
these igures, the left and right po ltion~ng device will be
explainedO
To the lower surface~ of the pair oE left and right
upper frames 25 are fixedly secured bearings 30 at left and
right symmetric positions at the rear and the front. Between
the opposed bearings 3Q are mounted two guide shafts 32 in
parallel to each other at the rear and the front, a pair of
left and right slide support members 33 are provided in a
slidable manner as supported and penetrated by the guide
shafts 32, and also a receiver member 34 is fixedly supported
at the center.
Between the two guide ~hafts 32 is provided a ball screw
35 in parallel to the guide shafts 32 as rotatably supported
by the opposed bearings 30 and the receiver member 34, and
this ball screw penetrates through the left and right Rlide
support members 33 and threadedly engaged therewith.
On the ball screw 35 are formed screw thread in a
symmetric manner on the left and right ~ides, and so, as a
result of rotation of the ball ~crew 35 the slide support
members 33 would slide symmetrically on the left and right
sides.
The above-mentioned mechanism i~ iden~ical both at the
rear and at th front, betwe~n the slide support member~ 33
at the rear and at the fro~t are su~pended centering arms 36
in pair on the left side and on the right side as directed
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~ack and forth, and so they move symmetrically on the left
and right sides jointly with the slide movement of the slide
support member~ 33.
At the condition where the conveyor 6 ha~ b~en inallned
and has become parallel to the upper ~rame~ 25, the centering
arms 36 are positioned closed to the upper portion of the
conveyor belt 12.
The above-mentioned two ball screw~ ~5 at the rear and
at the front have their one end~ projected from the bearings
30 to the outside, pulleys 37 are fitted and seaured to the
projected ends, and belt~ 41 and 42 are re~pectively extended
between the abave-mentioned pulleys 37 at the rear and at the
front and another pulley 40 fitted and secured to a drive
shaf~ of a servo motor 39 fixedly supported from the above-
described horizontal support frame 4a via a bracket 36 (See
Figs. l and 4).
Accordingly, as a result of driving by the servo motor
39, the rear and front ball screws 35 are rotated via the
belts 42 and 41, hence the centering arm~ 36 are moved
symmetrically on the left and right sides jointly with the
slide support members 33 by the rotation of the ball screw~
35, and thereby the di~tance between the centering arms 36 i~
varied.
Since the centering arms 36 are close to the conveyor
belt 12, they perform positioning i~ the left and right,
widthwi~e direction of a belt-like member placed on the
conveyor belt 12 by pinching the belt-like member from the
left and the right.
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Next, description will be made on a traveling mechanism
of a traveling support base 45. On the upper surfaces o~ the
left and right upper frames 25 are respectively laid linear
ball slide guide rails 46 in parallel to the upper frames 25,
and linear ball slide guides 47 provided at Eour corners on
the front and rear side~ and on the left and right side~ of
the lower surface of the traveling support base 45 are
slidably fitted to the linear ball slide guide rails 46.
Hence, the traveling support base 45 i~ supported so as to be
movable back and forth as mounted to the left and right rails
46 ~See Figs. 2, 4 to 7).
On the outside surface of the upper frame 25 on the le~t
side are provided bearings 48 and 4~ at the rear and the
front as projected therefrom, a ball screw 50 is rotatably
supported between these bearings 48 and 4~, and a drive shaft
projected backward of a D.C. servo motor 52 mounted on the
upper frame 25 at a position in front of the ball screw 50
and the front side end portion of the above-mentioned ball
screw 5Q are connected with each other via a coupling 51.
The ball screw 50 penetrates through a downwardly
extended portion of a protrusion 53 projected from the let
side surface of the above-described traveling support base
45, and threadedly engages therewith.
Accordingly, when the servo motor 52 is driven, the ball
screw 50 is rotated via the coupling 51, and the traveling
support base 45 can be made to travel back and forth via the
protrusion 53 threadedly engaged with the ball screw 50.
The traveling support base 45 is formed in such shape
that left and right side bodies above the linear ball 31ide
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~uide rails 46 are connerted by two connecting portions 45a
and 45b as shown in Fig. 5 (plan view), the front connecting
portion 45b is located at a backwardly recessed po~ition,
between the both connecting portions 45a and 45b is ormed an
octagonal bore elongated in the leEt and right direction~,
and side wall~ are erected along the contour of the bottom
wall having such shape.
On the lower surface of the bottom wall are provided
linear ball slide guide~ 47 at four corners on the front and
rear sides and on the left and right sides, and they are
slidably fitted to the linear ball slide guide rails 46 at
the below.
A cutting device 60 and an attraction device 120 are
respectively suspended from the connecting portions 45a and
45b connecting the left and right ~ide bodies behind and in
front of the octagonal bore at the center of the traveling
support base 45.
In the following, description will be made on the
cutting device 60 with reference to Figs. 5 to 7.
At the center of the rear connecting portion 45a of the
traveling support base 45r a support plate 61 iB mounted
between the top ends of the front and rear side wall~, and a
bearing 62 i8 fitted an~ secured to corresponding circular
holes drilled in the same support plate 61 and a bottom wall
thereunder.
The cutting device 60 i~ elongated in the horizontal
direction and has its central portion fixedly secured to the
bottom end portion of a support ~haft 64 which is supported
by the aforementioned ~earing 6~ as penetrating i~
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vertically, and the cutting device 60 is suspended so as to
be rotatable about a vertical axis jointly with the support
shaft 64.
Under a horizontally elongated support fram~ 65 in the
cutting device 60 i~ suspended a cylinder 71 ~o a8 to travel
along the support frame 65 and to be allowed to move in the
direction at right angles to the same traveling direction. A
disc-shaped knife 79 is rotatably ~upported via a pivot from
a rod projected downwards from the cylinder 71.
At one end of the support frame 65 is provided a motor
88, whose rotation i~ transmitted via reduction gears to a
pulley 84, and the cylinder 71 is made travel by revolution
of a belt extended around the pulley 84.
It is to be noted that in the proximity of ths pulley 84
is disposed an approach switch 93 which generates trigger
pulses in response to rotation of the pulley 84, and on the
basis of the trigger pulses a traveling position of the
cylinder 71, that ist the position of the knlfe 7~ can be
detected.
On the other hand, the ~upport frame 65 which is
rotatable about the ~upport ~hat 64 is inclined at an angle
with respect to the conveying direction of the belt-like
member as shown in Fig. S, and at a position corresponding to
the octagonal bore provided at the center of the traveling
support base 45 in front of the support shaft 64, a circular
shaft is supported from the support frame 65 o as to be
movable in ~he left and right directions. The circular shaft
9g can be moved leftwards and righ~war~s via a ~oothed b21t
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104 by a servo motor 102 desposed next to the circular ~haft
99 .
Referring to Fig. 5, the upwardly projected circular
shaft 99 i~ positioned within the octagonal bore at the
center of the traveling support ba e 45, a bracket 105 i~
pro]ected horizontally from the bo~tom wall of the front
connecting portion 45b of the travelin~ support base 45
towards the inside of the octagon~l bore, and the above-
described circular shaft 99 i5 loosely fitted from the below
into an elongated circular hole 106 drilled in the bracket
105O
Accordingly, when the servo motor 102 is driven, the
circular shaft 99 butts against the inner circumference of
the elongated circular hole 106 and is preven~ed to move, and
on the contrary, the support frame 65 is rotated about the
support shaft 64 by a reaction force. In this way, a cutting
angle with respect to the belt-like member can be finely
adjusted.
By moving the traveling support base 45 in the front and
rear directions the support frame 65 can be set at the
cutting position, and this cutting position is a position
above the magne~ block 20 extending obliquely at the rear
among the magnst blocks illustrated in Fig. 3, in
correspondence to ~he magn~t block 20, an anvil 110 which i~
an elongated knif~ receiver plate is also obli~uely mounted
between the left and right conveyor frames ~a at a po~ition
above the magnet block 20 (See Fig. 2), and the conveyor belt
moves between th~ magnet block 20 and the anvil 110. The
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~nvil 110 is made of parama~netic material or non-magnetic
material.
Accordingly, the belt-like mamber 15 conveyed by thye
conveyor belt 12 would advance a8 overriding the anvil 110,
so that when it stops at a predetermined po~ition, the
portion of the belt-like member to be cut i~ plac~d on the
anvil 110, and it i~ cut on the anvil 110 by the kniEa 79.
Since the belt-like member has a large number of ste~l
cords buried therein at a predetermined bias:angle, when the
cutting portion of the belt-like member 15 is placed on the
anvil 110 and the magnet block 20 is raised, the magnet block
20 attracts the belt-like member 15: downwards, and thereby
the belt-like member can be stuck onto the anvil 110 and held
. in position. By cutting under the above-mentioned condition,
the belt-like Dember 15 can be properly cut.
At the time of cutting, if the knife 79 i~ lowered by
driving the cylinder 71 after it has been ~t at a
predetermined position, tha knife 79 descends on a side edge
portion of the beIt-like member 15 held on the anvil 110, a
V-shaped knife edge bites in the belt-like member 15, and
when it reaches the anvil 110, the portion of the belt-like
member 15 right under the knife edge is cut.
At this moment, in the event that the ~teel cord 16
should exi~t right under the knife edge, the knife 79 that i~
movable in the direction at right angles to its traveling
direction, would escape in that direction because a reaction
force of a rubber portion in the vicinity of ~he s~eel cord
16 is large, and after all, it woul~ bite in the rubber
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portion between the adjacent steel cords 16 and would never
cut the steel cord 16.
In addition, the V-shaped knife edge would bite in while
drawing in the outer surface skin of the belt-like member on
the left and on the right, hence the steel cord i~ always
kept coated by rubber, and as the rubber is cut when the
knife edge has reached the anvil 110, the steel cord 16 would
not be exposed at the cut surface.
After the knife 79 ha~ bitten in the side edge portion
of the belt-like member 15, if the knife 79 is made to travel
by driving the motor 88, the knife 79 would continue to cut
the rubber between the adjacent steel cords 16 along the
steel cords 16r and when it has reached the other side edge
of the belt-like member 15, the cutting iæ completed.
It i5 to be noted that the amount of deviation of the
knife 7g in the direction at right angles to the traveling
direction can be detected at any arbitrary time by means of a
differential transformer 113 (Fig. 15). Accordingly, if a
knife 79 set just before cutting travels and i~ it should
deviate from a preset traveling line along which the belt-
like member is to be cut, the amount of deviation would be
detected by the differential transformer 113 at any arbitrary
time.
On the other hand, a traveling position of the knife 79
is detected by the aforementioned approach switch ~3.
Since the knife 7~ performs cutting alon~ the steel cord
16 buried in the belt-like member 15, if the steel cord 16 i5
curved, then the cut line is al~o curved in the sama shape~
and since the traveling position and the amount of deviation
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from the preset traveling line of the knife 79 are detected
moment by moment as the knife 79 travels, the shape of the
cut line and the cut angle can be known.
The above-described cutting deviae could be modi~ied
into a cutting device 300 as illu~trated in Figs. 17 to 20.
In the mo~ified cutting device 300, struts 302 are
erected on the left and right conYeyor frames 6b and 6a,
respectively, via support plates 301, and between the top
ends of the respective struts 302 are mounted a horizontal
support plate 303. The repective struts 302 are disposed as
displaced in position in the back and forth directions from
each other, accordingly the hori~ontal support plate 303 is
inclined at an angle with respect to the traveling direction
of the conveyor belt 12, and this angle is conformed to a
standard value of the bias angle of the steel cords 16 in the
belt-like member 12 to be conveyed on the conveyor belt 12.
On the lower surface of the horizontal ~upport plate 303
is laid a linear ball slide guide rail 304 as directed in the
lengthwise direction of the horizontal support plate 303, and
a linear ball slide guide 3~5 is slidably fitted to this rail
304. A traveling ~upport member 306 is fixedly secured to
the bottom surface of this linear ball slide guide 305.
Brackets 309 and 310 pivotably supporting rotary ~hafts
307 and 308, respectively, at th~ir lower end portions are
provided as hanging vertically downwards from the front side~
of the left and right end portions o th~ horizontal support
plate 303. To the rotary shaft 307 i8 fixedly fitted a
driven pulley 311, and to the rotary shaft 308 is fixedly
fitted a drive pulley 312. Between the respective pulleys
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~07 and 308 is looped a toothed belt 313, and the above-
mentioned traveling support member 306 is fixedly ~ecured by
screws 314 to a predetermined location of the upper ~ide
traveling portion of this belt 313.
On the upper surface of the h~rizontal support plate 303
in the proximity of the drive pulley 312 is disposed a motor
316 as supported by a support plate 315, and to the drive
shaft of this motor is fixsdly fitted a pulley 317. On the
other hand, to the rotary shaft 30 that is integral with the
aforementioned drive pulley 312 i fixedly fitted a pulley
318 in juxtaposition to the drive pulley 312, and a toothed
belt 319 is looped between this pulley 318 and the above-
mentioned pulley 317. Accordingly, the toothed belt 313
revolves as driven by the motor 316, and accompanying the
revolution of the toothed belt 313, the traveling support
member 306 travels along the rail 304.
On the inside surface of the strut 302 on the side of
the driven pulley 311, a sensor bra¢ket 320 is provided as
projecting forwards at the position of the same level as the
driven pulley 311. The sensor bracket 320 is bent into an L-
shape at its front end, and a reflection type optical sensor
321 is fixed on its surface opposed to the front side surface
of the driven pulley 311.
Onto the front side surface of the driven pulley is
sticked a reflective tape on which a rircle is divided into 8
equal sectors and the every other sectors are provided with
unreflective portions, so that depending upon the angular
positin during rotation of the driven pulley 311, an
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j;3;;~L~
lntensity of reflected light received by the reflection type
optical sensor 321 is varied.
Accordingly, when the driven pulley 311 rotates as a
result of traveling of the traveling ~upport member 306, that
is, revolution of the toothed belt 313, the reflection type
optical sensor 321 detect~ the rotary state of the driven
pulley 311, and by counting the number of variation~ of the
detected value, the traveling po~iton of the traveling
support member 306 can be derived.
On the bottom surface of the traveling support member
3G6 is provided a rail 323 for a ball ~lide table 322 as
directed in the direction at right angles to the traveling
direction, and a cylinder 324 is fixedly secured to the
bottom surface of the ball slide table 322 slidably fitted to
the rail 323. The cylinder 324 i8 suspended under the
traveling support member 306, and it can slide along the rail
323 in the direction at right angles to the direction of
traveling of the traveling support member 306.
At the bottom end of a downwardly projecting cylinder
rod 324a of the cylinder 324, iB fixedly ~ecured a knife
bracket 325 having a U-shaped cro~s-~ection. As ~hown in
Fig. 20, a bolt 326 penetrates horizontally through left and
right side pieces of the knife bracket 325, and it is fixedly
secured to the knife bracket 325 by means of washers 327 and
nuts 328 at the opposite ends. On the bolt 32~ is rotatably
supported a desc-shaped knife 79 at the center a~ positioned
by left and right spacers 329.
The knife 79 rotatably supported from the knife braeket
325 in the above-described manner, rises and falls in
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~ccordance with contraction and extension of the cylinder rod
324a. In addition, this knife 79 can move in the traveling
direction of the traveling support member 306, and al~o can
move in the direction at right angles to the above-mentioned
traveling direction.
A sensor bracket 331 projects backwards from the rear
side surface of the cylinder 324~ The rear end portion of
this bracket 331 i8 bent upwards to be opposed to the rear
side surface of the traveling ~upport member 306, and an
optical distance sensor 332 is mounted to the rear end
portion so as to be opposed to the support member 306.
Accordingly, the distance sensor 332 moves in th~ direction
at right angles to the traveling direction of the support
member 306, jointly with the cylinder 324 and relatively to
the traceling support member 306. The distance sensor 332
can detect the distance fxom the traveling support member 306
at any arbitrary time.
In other words, the above-described reflection type
optical sensor 321 detects the position of the knife 79 in
the traveling direction, while the distance sensor 332 can
detect the position of the knife 79 in the direction at right
angles to the trav ling direction. The detection signal~
issued from these reflection type optical sensor 321 and
distance sensor 332 are digitized, and the configuration of
the cut surface is known and stored in the form of coordinate
value~.
The anvil 110 described previously with reference to
Fig. 2, is disposed under the horizontal support plate 303 in
parallel thereto ~Figs. 18, 19 and 20). This anvil 110 is
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~ - . - .... ;
. .. ~. . . .
~0~3~
ade of non-magnetic hard stainless steel, and for instance,
stainless steel having a hardness of Hv ~00 or higher and
being hard to be scratched is employed. As described
previously, the anvil 110 is mounted above and clo~e to the
conveyor belt 12 so as to obliquely traverse the belt 1~, and
the belt-like member 15 having been conveyed to the anvil 110
by the conveyor belt 12 is further conveyed as overriding the
anvil 110.
Under the conveyor belt 12 is disposed the previously
described magnet block 20 of parallelogram shape so as to be
movable vertically at the position opposed to the anvil 110.
In addition, between the left and right frames 6b and 5a is
mounted a support plate 333, and on this support plate 333
are erected guide plates 334 respectively along the front and
rear side edges of the magnet block 20. The top ends of the
guide plates 334 are located close to the lower surface of
the conveyor belt 12.
Two cylinders 335 are fixed to the lower surface of the
support plate 333, their cylinder rods 335a project upwards
penetrating through circular hole~ in the support plate 333,
and are fixedly secured to predetermined positions on the
lower surface of the magnet block 20. When the cylinder rods
335a are extended by actuating the cylinders 335, the magnet
block 20 would be raised along the plate 334, and at the
fully raised position, the upper ~urface of the magnet block
20 comes close to the lower surface of the conveyor belt 12.
In the case where the magnet block 20 is present at the
raised positionr the belt-like member 15 on th~ anvil 110 is
held in tigh~ contact with the anvil 110 and its
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Z~i3~:4
~onfiguration i5 maintained because the steel cords 16 buried
within the belt-like member 15 are attxacted downwards by the
magnetic force of the magnet block 20. Then, under this
condition, cutting by means of the knife 79 is carried out~
The cutting is effected in a similar manner to the ca~e of
the previously described cutting device 60.
When the magnet block 20 i~ present at the lowered
position, the belt like member 15 on the anvil 110 is not
subjected to the influence of the magnetic force of the
magnet block 20, and since the anvil 110 itself is also made
of n~n-magnetic material and not magnetized~ the belt-like
membPr 15 can move freely, and the conveyance can be
performed easily.
Next, description will be made on an attraction device
also suspended from the traveling support base 45, with
reference to Figs. 8 to 10.
At the center of the front connecting portion 45b of the
traveling support base 45, a support plate 121 is mounted
between the top ends of the front and rear walls, and a
bearing 122 is fitted and secured to corrsponding circular
holes drilled in the support plate 121 and a bottom wall
under the support plate 121.
A support shaEt 124 vertically penetrating through the
same bearing 122 is rotatably fitted to the bearing 122 and a
washer 123 abov~ the bearing 122, and it is supported from
the bearing 122 by means of a nut 124a threadedly mated with
a screw portion at the upper part of the support shaft 124.
At the bottom portion of the support shaft 124 is
fixedly secured and supported a support frame 125 that is
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20(~i3X~
~longated in the horizontal direction and is U-shaped in
cross-section, at its central portion, and the support frame
125 is suspended in a horizontally rotatable manner about the
support shaft 124.
To the support frame 125 are fixedly secured cylinder~
126 on the opposite sides of the support shat 124, and
further bearings 127 are fixedly secured thereto on the both
left and right end portions thereof.
Under such support frame 1~5 is positioned an elongated
rectangular horizontal support plate 128 as opposed to the
support frame 125 in parallel thereto, onto the lower surface
of this horizontal support plate 128 are fixedly secured two
rectangular pipes 129 and 130 as held in contact with each
other. Upwardly projected rods 131a of a pair of left and
right cylinders 131 fixed to the upper surface of the
horizontal support plate 128 supporting the rectangular pipes
129 and 130, and downwardly projected rods 126a of the
cylinders 126 on the side of the above-described support
frame 125 are coaxially coupled, and the horizontal support
plate 128 and the rectangular pipes 129 and 130 are suspended
via the rods 1~6a and 131a.
And at the positions further displaced to the left and
to the right from the cylinder~ 131 on the horizontal support
plate 128, ~uide shafts 133 are provided as projected upward~
with their lower end portions fixed, and the guide shats 133
slidably and vertically penetrate through the bearing~ 123 on
the side of the above-mentioned support frames 125.
Accordingly, by extending and contracting ~he cylinder
rods 126a and 131a as a result of driving of the cylinders
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532~
~6 and 131, the rectangular pipes 129 ~nd 130 can be lowered
and raised as guided by the guide shafts 133.
Within the rectangular pipes 129 and 130 ~re
respectively contained elongated permanent magnets 134 and
135 as gripped from the above by holders 136 and 137. The
holders 136 are fixedly secured to the lower e~ds of rod~
138a projected downwards into the ~ront side rectangular pipe
129 of a pair of left and right cylinders 138 fixed on the
horizontal support plate 128, and 50, when the rods 138a
extend and contract as a result of driving of the cylinders
138, the permanent magnet 134 is lowered and raised within
the rectangular pipe 129.
Likewise, the holders 137 are fixedly secured to the
lower ends of rods 139a projected downwards into the rear
side rectangular pipe 130, and hence, when the rods 139a
extend and contract as a result of driving of the cylinders
139, the permanent magnet 135 is lowered and raised within
the rectangular pipe 130.
The attraction device 120 has the above-mentioned
construction, hence the main body su~pended via the support
shaft 124 can rotate about the ~upport shaft 124, also as a
result of driving of the cylinders 126 and 131, the
rectangular pipes 129 and 130 can be raised and lowered, and
the permanent magnets 134 and 135 within the rectangular
pipes 129 and 130, respectively, can be separately and
independently raised and lowered by driving the cylinders 138
and 139, respectively.
,
Accordingly, after the belt-like member 15 has been cut,
if the mutual joining surface Qf the rectangular pipes 129
":
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_.~d 130 is positioned along the vertical plane aligned with
the cutting surface, the lower surfaces of the rectangular
pipes 129 and 130 are made to butt against the upper suraces
of the end portions o the belt~like member 15 before ~nd
behind the cutting surface by ~owering the re¢tangular pipe~
129 and 130, and the permanent magnets 134 and 135 are
lowered re~pectively within the rectangular pipes 129 and
130, then the end portions of the belt-like member 15 before
and behind the cutting surface are attracted to the lower
surfaces of the rectangular pipes 129 and 130 and they are
raised upwards simultaneously with rise of the rectangular
pipes 129 and 13Q.
At this moment, if it is desired to attract only one of
the end portions o~ the belt-like member 15 before and behind
the cutting surface, it is only necessary to lower only one
of the magnets.
It is to be noted that when it i5 desired to release the
attracting action, if the magnet is raised, the corresponding
end portion of the belt like member 15 is seQarated from the
lower surface of the rectangular pipe.
The above-described attraction device 120 and the above-
described cutting device 60 are both suspended rom the
traveling support base 45, and as shown in Fig. 5, they can
rotate while always maintaining the parallel condition to
each other.
More particularly, the support shafts 64 and 124 of the
cutting device 60 and the attraction device 120,
respectively, penetrate upwardly the bearings 62 and 122
fixed ~o the traveling support ba~e 45, at the top end~ of
.~ - .,
3~
~ e~e support shafts are provided rotary arms 150 and 151,
respectively, as directed horizontally in parallel to each
other with their base end portions fitted and secured to the
support shafts, between the free end portions of the rotary
arms 150 and 151 is mounted a connecting rod 152, and ~he
opposite end portions o the connecting rod 152 are pivotably
engaged with the rotary arms 150 and 151.
Accordingly, when the cutting device 60 is rotated by
driving the servo motor 102 as described above~ rotation of
the support shaft 64 causes the support shaft 124 to rotate
via the rotary arm 15G~ the connecting rod 152 a~d the rotary
arm 151, thus the attraction device 120 can be rotated at the
same speed, and both the cuttiny device 60 and the attraction
device always maintain their parallel condition.
Next, description will be made on an a~traction hand 160
provided above the upstream end of the conveyor belt 12 (See
Fig. 2) with reference to Fig. 11 to 14.
Between the above-described pair of left and right upper
frames 25 is mounted a horizontal support rame 161
consisting of a tubular body having a rectangular cro~s-
section, and a frame 162 is suspended as directed in the
front and rear directions and fixedly supported at the center
between the left and right upper frames 25 by being
penetrated by the horizontal support frame 161.
On the top surfa~e of the frame 162 is extended a
support plate 163, a pair of cylinders 164 are fixedly
secured to the lower surfaces of the opposite end portions of
the support plate 163 projected back and forth from the frame
162, and to ~he lower end portions of rods 164a projected
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;2 0 (3 ~ 3~ L1L
~ownwards of the cylinder 164 is fixedly secured and
suspended a ca~ing 165 having a U-ahaped cross-section which
i~ elongated in the front and rear directions.
The casing 165 is formed in a wedge shape having it~
front end cut obliquely, and a non-magnetic steel plate 166
is extended so as to close its opening directed downwards.
Onto the upper surface of the casing 165 are fixedly
secured a pair of cylinders 167 at the front and at the rear,
and rods 167a of these cylinders 167 project into the casing
165 as penetrating ~he upper wall of the casing 165
downwards.
Within the casing 165 is contained a magnet 16~ gripped
by a holder 168, and this holder 168 is fixedly secured to
the tip ends of the rods 167a of the above-described
cylinders 167 to be suspended therefrom in a vertically
movable manner withen the casing 165~
The holder 168 is loosely fitted along the inner contour
of the casing 165, and the magnet 169 gripped by the holder
168 is also a flat plate elongated in the ront and rear
directions, whose front end is sharpened in a wedge ~hape.
The attraction hand 160 is constructed in the above-
described manner, hence the casing 165 is raised and lowered
by driving the cylinders lb4~ and by driving the cylinder~
167 placed on the casing lb5, the ma~net 169 i9 raised and
lowered within the casing 165.
Accordingly, when the belt-like member lS on the
conveyor belt 12 is to be attracted, by extending the rods
164a of the cylinders 164 the ca~ing 165 is lowered onto the
belt-like member 15, and subsequentIy, if the magnet 169 is
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,
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Z~ f~
~ wered by extending the rod~ 167a of the cylinders 167, themagnet 169 attracts the belt-like member 15 to the steel
plate 166.
Under this attracted condition, if the rods 1~4a are
contracted, the belt-like member 15 ~ises as being kept
attracted, and separates from the conveyor belt 12.
When the belt-like member 15 i8 to be placed on the
conveyor belt 12, if the casing 165 is lowered and the magnet
169 is raised, the belt-like member lS is present on the
conveyor belt 12 and the attraction effect i~ relea~ed~ hence
if the casing 165 is raised by itself, the belt-like member
15 is left on the conveyor 12.
The above-mentioned is the structure of the ~ticking
apparatus for a belt-like member according to the present
invention, and now description will be made on a drive
control system for such apparatus on the basis of the
schematic block diagram illustrated in Fig~ lS.
In Fig. lS reference numeral 181 designates an operation
sequence controller which stores position information and the
like of a predetermined operation program, the program s~ored
in this operation se~uence controller 181 is produced, for
instance, by manipulating a panel switch 1~7 and a display
device 186 for confrimation of information, and also position
inform~tion ~toxed in the operation equence controller 181
is what was instructed from an instruction device 180.
Position information reproduced from the aforementioned
operation sequence controller 181 according to an opexation
program is sen~ to a data processor 183, and in this data
processor 183, a rotational speed and an amount of rotation
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Jf the servo motor 192 are calculated on the basis of various
par~meters which were preliminarily stored.
It is to be noted that in the event that the calaulated
results should exceed preliminarily stored limit speed and
limit amount of rotation, an alarm signal i5 sent to the
operation sequence controller 181, and thereby the overall
operation is stopped.
If the above-mentioned results of calculation are sent
from the data processor 183 to a route positioning controller
182, the route positioning controller 182 drives a servo
motor 192 via a servo motor controller 185.
The servo motor 192 involves 6 motors in total
consisting of the above-described servo motors 3, 13, 39, 52,
88 and 102 alotted for the respective uses.
In response to rotation of the servo motor 192, pulse
signals are sent from a pulse generator 193 to the sexvo
motor controller 185 and the route positioning controller
182, and the well-known servo control is effected.
Reference numeral 184 designates an input/output
controller, which transmits signals sent from an external
instrument 191 to the operation sequence controller 181, also
transmits a control signal is~ued ~rom the operation sequence
controller 181 to the external instrument 191 to control the
external instrument 191.
In addition, an external backup memory 189 can regi~ter
or read out preservation programs in cooperation with the
operation sequence controller 181~
Furthermore, reference numeral 190 designates a printer
for outputting a program and the like preserved and stored in
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.
.
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~he external backup memory 189 and the operation sequence
controller 181.
As described previously, the differential trans~ormer
113 detects an amount of deviation of a cutter from a
predetermined traveling line during cutting when the belt-
like member is cut by the cutting device 60.
A differential transformer amplifier 195 amplifies a
minute output voltage of the differential transformer 113 up
to a high voltage.
An A/D converter 196 converts an output voltage from the
differntial transformer amplifrer 195 to a digital output.
Trigger pulses issued from the approach switch 93 are
used as timing signals for inputting the data sent from the
A/D converter 1~6 to a calculator 197.
The calculator 197 takes in the digital input sent fxom
the A/D converter 196 in response to the timing signals
consisting of the trigger pulses, then arithmetically
processes this digital input, and especially, calculates an
. .
amount of correction for an angle and an amount of correction
for a length.
A display device l9U displays result~ of calculation.
A panel switch 202 i~ used upon start and stop of the
calculator 197 and formation of a program.
An input/output controller 199 performs signal level
matching for transferring the-results o calculation by the
calculator 197 to the operation sequence controller 181.
A series of operation procedures controlled by the
control system as described above will be explained
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~ :
200~
~equentially in the following with reference to Figs. 16(a)
to 16(i).
Figs. 16(a~ to 16~i) illustrate the succe~sive 3teps o~
the operation of cutting out a belt-like member from a r~w
material and wrapping and sticking it around and to a
cylindrical drum. In the respective figures are shown a drum
1, a conveyor belt 12l magnet blocks 17, 18, 19, 20 and 21
disposed within a conveyor 6 in a vertically movable manner,
an anvil 110 provided above the magnet block 20 with the
conveyor belt 12 interpo~ed therebetween, rectangular pipes
129 and 130 (containg magnets 134 and 135 therein) and a
knife 79 included in a cutting device 60 and an attraction
device 120 suspended from a traveling support base, a casing
165 (containing a magnet 169 therein) of an attraction hand
160, and a belt-like member 15.
At first, the belt-like member 15 is carried in onto the
conveyor belt 12 from the rear of the conveyor 6, the
conveyor belt 12 is revolved by driving the servo motor 13,
and the belt-like member 15 is fed in up to the position
where the tip end of the belt-like member 15 goes over the
anvil 110.
The cutting device 60 is moved as driven by the servo
motor 52 until the knife 79 comes to the cutting position,
and it i5 rotated as driven by the ~ervo motor 102 up to the
cutting angle predetermined in the process of the belt-like
member 15 to be ready for cutting.
Under the condition where the belt-like member 15 ha3
been made free on the conveyor belt 12 by lowering the magnet
blocks 1~, 19, 20 and 21 under the conveyor belt 12, the
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~O~i32~
_ervo motor 39 is driven to perform positioning in the
lateral direction while pinching the belt-like member 15 from
the left and the right with the centering arms 36, then the
positioned belt-like member 15 is attracted to the conveyor
belt 12 and the anvil 110 by raising the magnet blocks 18,
19, 20 and 21, and the centering arms 36 are opened.
Next, the knife 79 in the cutting device 60 is
positioned at the start position on the one side edge of the
belt-like member 15 as driven by the motor 88, th~n the knife
79 is lowered by driving the cylinder 71, and th~ belt-like
member 15 is cut by making the knife 79 travel along a
predetermined traveling line as driven by the motor 88.
During the cutting operation, signals detected by the
approach switch g3 and the differential transfor~er 113 are
sent to the route positioning controller 182l where a cut
configuration, an amount of angle correction, an amount of
length correction and the like are calculated and sent to the
operation sequence controller 181, in which they are stored.
After the cut-out tip end portion of the belt-like
member 15 has been removed, if the belt-like member 15 is
made to advance further by a distanca 11, the tate shown in
Fig. 16(a) is reali2ed. This condition is a start condition
of a series of cycle operations to be repeated subesquently.
At first/ the magnet blocks 18, 19, 20 and 21 are
lowered and the centering arms 36 are closed up to a preset
width to perform lateral positioning of a belt-like member
15b, then the magnet blocks 18, 19 and 21 are raised, and the
centering arms 36 are opened.
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Z~0537~
The belt conveyor 12 is revolved to make the belt-like
member 15b advance by a predetermined length 12-
Then, lateral positioning i5 effected again, and thebelt-like member 15b is made to advance by a predetermined
length 13 by revolving the conveyor belt 12.
The above-mentioned total distance 11 + 12 ~ 13 over
which the belt-like member l5b has advanced after cutting of
the leading end of the belt-likP member 15b, is egual to the
circumferential length L of the drum.
Again, lateral positioning is carried out (Fig. 16(b~),
subsequently the cutting device 60 is moved to the cutting
position, and the inclination angle of the cutting device 60
is set at the process angleO
- Regarding the above-mentioned setting of the angle, upon
initial setting after the preparatory operation the setting
operation is unnecessary because the cutting device 60 is
:: already set at the process angle, but after the subsequent
repeated operations are started, it becomes necessary.
:Sabseqently, all the magnet blocks 18, 19, 20 and 21
including the magnet block 20 right under the anvil 110 are
raised to attract and hold the belt-like member 15b/ the
belt-like member 15b is cut by the knife 79, and the knife 79
i5 raised (FIG. 16(C)3.
Then the rectangular pipes 12~ and 130 are retreated to
align their joining surface 140 (~i9o 10~ with the
predetermined traveling line of the knife 79, the end
portions of the belt-like members 15b and 15c before and
behind the cut surface are raised by the attraction device
120 lFig. 16~d)~r and both the conveyor belt 12 and the
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2~)53~L
_ctraqction device 120 are made to advance at the same speadby the distance 11 so that the leading end of the rear belt-
like member 15c may go over the anvil 110.
At this momentl the rectangular pipe 129 attracting the
trailing end of the belt-like member 15b aut into a de~ired
length, is rotated by driving the servo motor 102 by the
amount of correction of the angle which was derived through
calculation after cutting, and thereby correction for
matching the trailing end of the belt-like member 15b with
the angle of the leading end, is effected.
Under such condition, the rectangular pipes 129 and 130
are lowered, only the permanent magnet within the rectangular
pipe 129 is raised, and the trailing end of the belt-like
member 15b is made to be attracted to the conveyor belt 12.
Then, if the rectangular pipes 129 and 130 are raised, the
leading end of the rear belt-like member 15c is raised while
it is kept attracted to the rectangular pipe 130.
The trailing end of the belt-like member 15b at the
front can be attracted to and held on the side of the
conveyor belt 12 while maintaining its configuration
corrected by the rotation of the rectangular pipe 129 and
conformed to the cut angle of the leading end, since the
magnetic force of the permanent magnet 134 is larger than
that of the magnet blocks 17, 18~
Subsequently, the rear belt-like member 15c is attracted
to the casing 165 by the suction device 160 and thereby
raised (Fig. 161e)), then the cut belt-like member 15b is
conveyed forwards by revolving the conveyor 12, and the
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t ' `; ; ~:
z~ 32~L
eading end of the belt-like member 15b is positioned at a
sticking start position under the drum 1.
Since the belt-like member 12b is attracted to and held
on the conveyor belt 12 by the maynet block~ 17, 18, and 19
even during conveyance, the shapes of the leading and
trailing ends can be maintained.
Next, the conveyor 6 is made to swing by driviny the
cylinder 22, thereby the front end of the conveyor 6 is
raised, and the leading end of the belt-like member 15b is
pinched by the outer circumferential surface of the drum 1
and the conveyor belt 12 (Fig. 16~f)).
Within the drum 1 is contained a permanent magnet not
shown, and by means of this permanent magnet, the leading end
of the belt-like member 15b is attracted to the outer
circumferential surface of the drum 1.
The drum 1 and the conveyor belt 12 are driven while
equalizing the circumferential speed of the drum 1 and the
linear conveying speed of the conveyor belt by synchronizing
the servo motor 3 and the servo motor 13, and thereby the
triangular portion at the leading end of the belt-like member
15b is wrapped around the drum 1 (Fig. 16(g~.
Subse~uently, the central portion of the belt-like
member 15b having the triangular portions at the leading and
trailing ends removed, is wrapped around the drum 1 while
controlling the relative speed between the drum 1 and the
conveyor belt 12 (Fig. 16(h)).
This control is executed on the basis of the amount of
correction for a length which was calculated at the time of
the above-described cutting, thP drum 1 is made to have a
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.
~s~
_omewhat faster speed so that the belt-like member 15b tends
to be stretched, and control is ef~ected in such manner that
the interval between the steel cords 16 buried within the
belt-like member 15b may have a predetermin~d dimension.
The triangular portion at the trailing end of the belt-
like member 15b i5 wrapped around the drum 1 by driving the
drum 1 and the conveyor belt 12 at the same speed (Fig.
16(i))-
The belt-like member 15b wrapped around the
circumference of the drum 1 in the above-described manner has
its opposite end portions surely conformed, and there is no
fear that stepped misalignment may occur, not to speak of
overlap or separation of the end portions because the
trailing end angle of the belt-like member is corrected so as
to conform to the leading end angle and the length is also
adjusted.
In addition, the interval between the steel cords 16
within the belt-like member 15b also falls in a predetermined
range, and so, the end portions can be surely joined.
Next, by driving the cylinder 22, the conveyor 6 is made
to swing and returned to its original inclination angle, the
belt-like member 15b sticked to the drum 1 has its end
portions joined together, and then it is extracted.
Then the rectangular pipes 129 and 130 which are held at
the state where they corrected the trailing end angle of the
belt-like member 15b, are returned again to the oriyinal
process angle by driving the servo motor 10~, and the next
belt-like member 15c which has attracted and raised by the
-~8-
;~13~)~3Z~
~ctangular pipe 130 and the casing 165 is transferred to the
conveyor belt 12.
This condition is the same condi~ion as that shown in
Fig. 16~a), and subsequently, the steps of the proce~s shown
in Figs. 16(a) to 16(i3 are repeated.
Ag described in detail above, according to the presen~
invention, the inclination angle of the cut line at the
leading end of the belt-like member is measured at the time
of cutting, the inclination angl~ Qf the cut line at the
trailing end is measured at the time of cutting at the
trailing end, and by comparing the inclination angle of the
cut line at the trailing end with the inclination antle a~
the leading end~ an amount of correction for the inclination
angle is calculated. After cutting, the trailing end portion
is corrected so as to conform to the leading end angle by
rotating an attraction device which a~racts and holds the
trailing end portion on the basis or the above-mentioned
amount of correction for the inclination angle, the belt-like
member i9 wrapped around a drum while maintaining the
corrected condition and the end ortion~ are joined together,
and therefore, the leading end and the trailing end would
surely coincide, and proper joining not associated with
stepped deviation can be realized.
In the method according to the present invention, since
a trailing end angle of a belt-like member is corrected 80 as
to conform to a leading end angle and the belt-like member is
stuck to the drum while maintaining the corrected condition,
the leading end surfacz and the trailing end surface align
with each other and joining can be achieved properly.
,, , , ~ i
2~053~1
Furthermore, with the apparatus according to the present
invention, since a leading end cut angle of a belt-like
member is measured by measure means, after cutting o~ a
trailing end the trailing end sur ace of the belt-like member
can be aligned with the leading end surface by changing an
attitude of hold means for holding the trailing end by
correction means on the basis of the measured cut angle, and
the corrected trailing end surface is maintained in shape and
stuck to a cylindrical drum by attraction means and hold
means, the leading end and the trailing end can be always
made to coincide properly, inconveniences such as stepped
deviation would not occur, and improvements in quality can be
realized.
Still further, compactization oE the entire apparatus is
possible, and reduction of an installation cost can be
achieved.
-4~-
.
