JPH0457786B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to stitching the ends of a plurality of raw cloths with a sewing machine to tie the ends of each raw cloth prior to a tying process. The present invention relates to a cloth edge tearing device that is applied when tearing the edge of a cloth in the width direction of the cloth to create a cloth edge having a form suitable for knotting.

[Prior art] When removing dirt, scratches, folds, poor cutting, and other defects on the edges of raw cloth transported to a factory,
Conventionally, the edges of each raw cloth were torn in the width direction of the cloth by hand.

[Problems to be Solved by the Invention] Therefore, there are problems such as the work of tearing the ends of the cloth is complicated, reducing work efficiency and requiring labor, and the work of tearing the ends of the cloth involves the knotting process. This has been an obstacle to automation.

It is an object of the present invention to solve the above-mentioned problems.

[Means for Solving the Problems] The fabric edge tearing device of the present invention includes an upper straight running path formed along the weft of the fabric edge set on a table, and an upper straight running path connected to the terminal end of the upper straight running path. The vehicle travels in a circular manner through a first turning road, a lower straight road connected to the end of the first turning road, and a second turning road connected to the end of the lower straight road. The traveling member connected to the endless circulating chain releasably grasps a part of the cloth end at the starting position of the upper straight traveling path, and tears the edge of the cloth end while the traveling member is connected to the endless circulation chain. A clamp mechanism that runs together with the material is attached, and the sprocket wheel on the first turning road side of the pair of sprocket wheels on which the circulation chain is suspended has a clamp mechanism that grips and holds a part of the fabric edge. When the running member travels in a curved direction along the first turning path together with the clamp mechanism, a strip of cloth torn from the cloth end is caught and turned back from the upper straight path side to the lower straight path side. The latching pulleys installed in the same manner are connected concentrically and rotatably,
A release member is installed in the middle of the lower straight travel path for activating the clamp mechanism and releasing the strip of cloth from the clamp mechanism.

(Function) With the clamp mechanism attached to the traveling member connected to the endless circulation chain and circulating, holding a part of the edge of the cloth set on the table,
When the traveling member travels from the start position through the upper straight traveling path, the first turnback traveling path, and the lower straight traveling path, the clamp mechanism runs together with the traveling member while tearing the fabric edge, and the traveling member A strip of cloth torn from the edge of the cloth when traveling around the first turning path is attached to the sprocket on the first turning path side of the pair of sprocket wheels on which the circulation chain is suspended. The sprocket wheel is hooked to a latching pulley concentrically and co-rotatably connected to the sprocket wheel and turned back from the upper straight running path to the lower straight running path, and furthermore, the running member is connected to the lower straight running path. The strip of cloth is released from the clamp mechanism by the release member while traveling on the straight travel path.

[Effects of the Invention] Since the present invention is configured as described above, the edge of each fabric edge can be accurately torn along the weft to smoothly carry out the fabric edge tearing operation, and the fabric edge tearing operation can also be carried out smoothly. can save labor and increase efficiency.

Further, when the traveling member travels in a curved manner on the first turning travel path, the clamp mechanism rotates the strip-like cloth piece torn from the cloth end around the center of the curved travel of the traveling member in the curved traveling direction, and the clamping mechanism rotates the strip-like cloth piece torn from the cloth end around the curved center of the traveling member. The hanging pulley actively sends the cloth to the lower straight running road side while hooking it to the upper straight running road side, so the cloth strip is securely hooked to the hanging member and the moving direction of the strip is changed from the upper straight running road side to the lower side. It can be smoothly turned to the side of the road when running straight on the side, eliminating the problem of the cloth strip torn from the edge of the cloth getting caught up in the circulation chain or scattering randomly, and keeping the cloth strip always in a fixed position. The tear debris can be brought in in a uniform shape, making it easier to dispose of the tear debris.

[Example] Next, an example of the present invention will be described with reference to the drawings.

A sewing machine sequentially sews the edges of multiple raw fabrics folded up and down in the vertical direction so that each folded edge is formed alternately, so that each raw fabric has a length that is suitable for continuous processing. In the automatic cloth tying line where each raw cloth is brought in, there is a table 1 for placing the raw cloth at the raw cloth carrying station where each raw cloth is carried in.
is installed, and each raw fabric is placed on the upper plate 1a at the upper end of the table 1 so that its weft direction is perpendicular to the transport direction (back and forth direction) in the tying process of the raw fabric.

At the upper end of a piston rod 60a of a cylinder 60 vertically attached to the front side of the table 1, an elevating table 61 is installed on which the raw cloth A extruded from the table 1 is transferred.

Above the front edge of the table 1 are the start of the raw cloth A on the table 1 and the raw cloth A on the lifting table 61.
A clamper 62 is installed which controls the transfer to the suturing station while clamping the end of the overlapped fabric overlapping the opposite end of A′, and the left and right ends of this clamper 62 releasably grip and hold the clamper 62. It is supported by a pair of left and right clamper receivers 63.

Near the center of the upper plate 1a of the table 1 in the front-rear direction, there is a through hole 1c opened in the shape of a slit along the weft of the cloth edge B of the raw cloth A on the table 1.
A is formed over almost the entire width of the cloth edge a, and is slightly inward of the left end of the upper plate 1a slightly in front and behind the through hole 1c. A pair of front and rear cutter holders 22, each equipped with a cutter 21 for forming a cut at a tearing start position, are mounted in an inclined manner with the upper portions of the cutters 21 protruding above the table surface 1b.

On the table surface 1b on the upper surface of the upper plate 1a, a pair of front and rear fixed clamp mechanisms 23, 23 arranged slightly ahead of the front cutter 21 and slightly behind the rear cutter 21 are used to start tearing the fabric edge B. They are respectively attached to releasably clamp the clamped part B2 adjacent to the side corner part B1 with the table surface 1b.

Both fixing clamp mechanisms 23 include a base plate 24 attached to the table surface 1b, and a pair of protrusions 24a whose lower proximal ends are pinned to the upper tips of protrusions 24a protruding from the center of the upper surface of the base plate 24. A swing lever 25 and a pair of links 26 whose lower ends are pinned to the base end of the protruding piece 24a.
Then, the tip portions are pinned to the upper base end portion of the swinging lever 25 and the upper end portion of the link 26, respectively, and the board 2
4 through a swing lever 25 and a link 26, an operating lever 27 is connected to the operating lever 27 so as to be tiltable in the vertical direction.
and a clamp member 28 which is fastened perpendicularly to the tip of the swinging lever 25 and has a holding piece 28a formed at its lower end for holding the clamped portion B2 of the cloth end B against the table surface 1b. Each is equipped with

When tearing the edge of the cloth end B pulled out from the raw cloth A at the back of the through-hole 1c of the table 1, the clamped portion B2 of the cloth end B is held by the fixed clamp mechanism 2 on the rear side.
When tearing the edge of the cloth end B pulled out from the raw cloth A in front of the through hole 1c of the table 1, the clamped part B2 is held on the table surface 1b by the clamp member 28 of No. 3 on the front side. It is pressed against the table surface 1b by the clamp member 28 of the fixed clamp mechanism 23. Further, when the edges of a plurality of cloth edges are torn at the same time, the overlapping cloth edge, in which the plurality of cloth edges are overlapped, is pressed against the table surface 1b by the fixed clamp mechanism 23.

In table 1, there is a table 1 before tying raw cloth A.
A tearing mechanism is installed to automatically tear the edge portions of one or more pieces of cloth edge B along the weft to create cloth edges having a form suitable for sewing.

A reducer 3 to which a motor 4 is integrally assembled is installed near the right end of a base plate 2 placed horizontally at the bottom of the table 1, and an output shaft 3 of this reducer 3 is installed.
A drive gear 5 is fitted to a.

A horizontal drive shaft 7 is rotatably inserted and supported via a bearing in a bearing portion 6a at the upper end of a stand 6 erected on the base plate 2 slightly behind the reduction gear 3.

A driven gear 8 meshed with the driving gear 5 is fitted to the front end of the drive shaft 7 via a bearing so that it can freely rotate. An electromagnetic clutch 9 is interposed which is coupled and disengaged in order to transmit the rotation of the driven gear 8 to the drive shaft 7 or to prohibit rotation transmission from the driven gear 8 to the drive shaft 7.

A first sprocket wheel 10 is fitted to the rear end of the drive shaft 7, and a strip of cloth torn from the cloth end B is hooked onto the first sprocket wheel 10 and folded back into two. A locking pulley 11 is concentrically and co-rotatably coupled to the bearing part 6a of the stand 6 and the first sprocket wheel 10 is connected to the first sprocket wheel 10 when the electromagnetic clutch 9 is disengaged. An electromagnetic brake 12 for braking the 1-sprocket wheel 10 is interposed.

A bearing member 16 is attached to the upper end of a stand 15 erected near the left end of the base plate 2 so that its movement in the left and right direction can be adjusted. A driven shaft 17 supported in parallel is rotatably inserted and supported.

A first sprocket wheel 10 is attached to the driven shaft 17.
A second sprocket wheel 18 having the same number of teeth is fitted, and an endless circulation chain 19 is suspended from both sprocket wheels 10, 18 so as to be able to rotate. The circulation chain 19 is driven such that its upper straight section and lower straight section move straight in the horizontal direction below the table surface 1b along the weft of the cloth edge.

A slideway 14 formed in an endless shape by a band-shaped material is fixed to the upper part of the front side of the frame 13 which is erected along the left-right direction at the rear end of the base plate 2 via a mounting member. Slideway 1
A pair of upper and lower linear guide portions 14 are provided at the upper and lower portions of the 4, with vertical front surfaces and horizontal upper and lower edges, respectively.
a, 14c are formed along the upper straight portion and the lower straight portion of the circulation chain 19, respectively, and the left and right ends of the slideway 14 have the same cross-sectional shape as both the straight guide portions 14a, 14c,
A pair of left and right curved guide portions 14b and 14d, each curved outward in an arc shape and connected to the left and right end portions of both straight guide portions 14a and 14c, respectively, extend along the left and right curved portions of the circulation chain 19, respectively. It is formed as follows. The outer periphery and inner periphery of the slideway 14 are each formed into a V-shape in cross section.

A pair of front and rear connecting pieces 30, 30 are connected to the circulation chain 19, into which the front and rear ends of connecting pins 19a, 19a of two adjacent chain links are inserted, respectively. A joint pin 32 extending laterally toward the slideway 14 is attached in a cantilevered manner to the upper end of the joint plate 31 to which the joint plate 31 is sandwiched, and a joint bearing 33 is fitted to the tip of this joint pin 32. .

On the rear side of the running member 34 installed vertically in front of the joint pin 32, a pair of guide blocks 35, 35, each having a protruding edge 35a projecting from the tip of the inner side, are spaced apart and facing each other. A joint bearing 33 is slidably fitted between both guide blocks 35, and a running member 34 is connected to the joint pin 32 via the joint bearing 33 and both guide blocks 35 so as to be movable together. There is.

A pair of rectangular plate-shaped swing plates 36, 36 are inserted through the center of both ends of the front side of the running member 34, and swing through hinge pins 37, 37 fixed to the running member 34, respectively. At both ends of both swing plates 36, there are two inner and outer pairs that are rotatably engaged with the outer and inner edges of the slideway 14 through V-shaped grooves formed in the outer circumferential surface. rolling rollers 38, 38
are each rotatably supported.

The running member 34 is guided by the slideway 14 via each rolling roller 38 and runs together with the circulation chain 19, and is formed along the upper straight portion 14a of the slideway 14 parallel to the weft of the fabric edge B. an upper straight running path 40A, and a slideway 1 connected to the end of this upper straight running path 40A.
A first turning path 40B is formed along the left curved guide section 14b of the slideway 14, and a first turning path 40B is formed along the lower straight guide section 14c of the slideway 14, which is connected to the end of the first turning path 40B. a lower straight running path 40C, and a second turn that is connected to the end of the lower straight running path 40C and the starting end of the upper straight running path 40A, and is formed along the right curved guiding portion 14d of the slideway 14. Driving route 40
circulates with D. The starting end of the upper straight traveling path 40A is a start position where the traveling member 34 starts traveling, and the vicinity of the end of the lower straight traveling path 40C is a standby position where the traveling member 34 stops traveling and waits.

Next, a description will be given of the clamp mechanism 39 that is attached to the running member 34 and runs while tearing the edge of the fabric edge B in order to releasably grip the corner B1 on the tear initiation side of the fabric edge B. A pair of through holes 41a, 41a are provided in the clamp block 41 whose portion is attached to the tip of the front side surface of the running member 34 in parallel along a direction perpendicular to the tip surface 41b of the clamp block 41. At the same time, three clamp holes 41c arranged in a horizontal line are recessed in the distal end surface 41b of the clamp block 41.
When the running member 34 runs on the upper straight running path 40A, the front end surface 41b of the clamp block 41 is aligned with the table surface 1b.

A pair of slide pins 42 are slidably inserted in the through holes 41a of the clamp block 41 in the axial direction, and a nut 43 screwed into the base end of the slide pins 42 and They are each urged toward the joint pin 32 by a spring 44 interposed between the step portion and the step portion.

Clamp block 41 at corner B1 of cloth edge B.
A presser plate 45 installed on the clamp block 41 for releasably gripping between the two slide pins 42 is fastened to the tips of both the slide pins 42 by nuts 46 so as to be able to move together with both the slide pins 42. ing. Three clamp claws 45a facing each clamp hole 41c of the clamp block 41 are provided on the inner surface of the presser plate 45 so as to protrude into the clamp holes 41c, and the cloth end B is connected to each clamp hole 41c and each clamp claw. 45a, the clamp block 41 is firmly held between the clamp block 41 and the holding plate 45 in a state in which 32 locations are deformed into a mountain shape.

At the base end of the clamp block 41, the base ends of a pushing member 47, which elastically abuts the base ends of both slide pins 42, are pinned so as to be slidable in the direction of movement of the slide pins 42. , this pushing member 4
7 is a bolt 4 tightened to the clamp block 41
8 defines a swinging end on the side opposite to the presser plate 45.

The tip of the pushing member 47 is formed into a forked shape, and a roller-shaped follower 50 is rotatably fitted in the center of a support pin 49 that is horizontally suspended from the tip in parallel with the joint pin 32. .

The holding plate 45 of the clamp mechanism 39 is connected to the running member 34
When it travels on the upper straight running path 40A, it travels in a state in which it protrudes onto the table surface 1b through the through hole 1c of the table 1.

When the pressing member 47 swings toward the holding plate 45, both slide pins 42 are pushed toward the holding plate 45, the holding plate 45 is separated from the clamp block 41, and a space is created between the clamp block 41 and the holding plate 45. Cloth edge B with a gap formed and held by the presser plate 45
Corner part B1 of is released. Insert the tearing start side corner B1 of the fabric end B into the space between the clamp block 41 and the presser plate 45, and press the pushing member 47.
When released, the pushing member 47 is swung back by the elastic force of the spring 44, and the presser plate 45 is elastically returned to the clamp block 41 side, and the corner portion B1 of the cloth end B is moved between the clamp block 41 and the presser plate. It is held between 45 and 45.

The second sprocket wheel 18 is placed on the base plate 2.
A push-up cylinder 52 is vertically attached to a bracket 51 that stands opposite to the push-up cylinder 52, and a lifting member 53 connected to a piston rod 52a of the push-up cylinder 52 has an up-down cylinder attached to the rear side of the bracket 51 on the front side. A sliding portion 53 slidably engaged with a slide glass 51a protruding along the direction.
A is formed, and a follower 50 is formed on the upper surface of the upper plate 53b formed horizontally at the upper end of the elevating member 53 when the traveling member 34 travels to the starting position of the starting end of the upper straight traveling path 40A and stops. a push-up piece 54 for pushing up and separating the press plate 45 of the clamp mechanism 39 from the clamp block 41;
is fixed. When the running member 34 stops at the start position, the follower 50 pushes up the push-up piece 54.
The push-up cylinder 52 stops in this state.
When the piston rod 52a moves upward, the follower 50 is pushed up by the push-up piece 54, and the presser plate 45 is separated from the clamp block 41.

When the traveling member 34 travels from the start position while the corner B1 on the tear start side of the fabric edge B is held between the clamp block 41 and the presser plate 45,
The running member 34 runs near the starting ends of the upper straight traveling section 40A, the first turnback traveling path 40B, and the lower straight traveling path 40C, and the clamping mechanism 39 closes the cloth edge B.
The end edge of the fabric edge B is sequentially torn along the weft, and the running member 34 turns along the first folding path 40B together with the clamp mechanism 39 that grips a part of the fabric edge. During forward travel, a strip of cloth torn from the cloth end B is hooked on the catch pulley 11 and folded back from the upper straight travel path 40A side to the lower straight travel path 40C side, and then the traveling member 3
The tearing of the edge of the cloth edge B is completed while the cloth 4 travels on the lower straight traveling path 40C.

A mounting member 55 horizontally suspended along the vicinity of the end of the lower straight traveling path 40C of the traveling member 34 has a follower 50 of the clamp mechanism 39 facing downward while the traveling member 34 passes through the lower straight traveling path 40C. A release cam 56 is attached to release the end portion of the strip of cloth torn from the cloth end B from the clamp mechanism 39 by temporarily pressing down. A cam surface 56a is formed on the lower surface of the release cam 56. The cam surface 56a is inclined at both ends and horizontal near the center.

When the traveling member 34 moves to a position facing the release cam 56 while traveling on the lower straight travel path 40C, the follower 50 moves against the cam surface 56a of the release cam 56.
The holding plate 45 is pushed downward and separated from the clamp block 41, and the end of the strip of cloth held by the clamp mechanism 39 is released and the strip of cloth falls. do. When the traveling member 34 further travels and the follower 50 separates from the release cam 56, the follower 50 is released and the presser plate 4 is released.
5 elastically returns upward and comes into contact with the clamp block 41, and the space between the clamp block 41 and the holding plate 45 is closed.

Next, the operation and effects of the embodiment having the above configuration will be explained.

When performing automatic tearing of the edge of fabric edge B,
First, when the preparation switch is pressed, the traveling member 34 travels from the standby position to the start position and stops, and then the piston rod 52a of the push-up cylinder 52 moves upward to push up the follower 50, and the presser plate 45 is pushed up and the clamp block 41
separate from In this state, hold the corner B1 of the fabric edge B on the tearing start side between the clamp block 41 and the presser plate 4.
5 and press the set switch, the piston rod 52a of the push-up cylinder 52
is retracted downward, the follower 50 is released, and the presser plate 45 is elastically returned downward, and the corner portion B of the cloth edge B is
1 is held between the clamp block 41 and the holding plate 45. In this state, after forming a cut with the cutter 21 at the tearing start position of the fabric edge B, the operation lever 27 of the fixed clamp mechanism 23 is tilted and the fabric edge B is cut.
The clamped part B2 adjacent to the corner part B1 of is clamped between the clamp member 28 and the table surface 1b.

Next, when you press the operation button, the clamp mechanism 39
The running member 34 starts running from the start position while gripping the corner B1 of the cloth edge B, and the running member 34 moves between the upper straight running section 40A, the first turnback running path 40B, and the lower straight running path 40C. The clamp mechanism 39 travels near the starting edge, and the clamp mechanism 39 moves to the corner B1 of the fabric edge B.
While the fabric is gripped and traveling back, the edge of the fabric edge B is sequentially torn along the weft. The running member 34 is the first
A strip of cloth torn from the cloth end B when passing through the turning path 40B is hooked to the turning pulley 11 and turned back, and the traveling member 34 returns to the lower end of the straight traveling path 4.
The tearing of the edge of the cloth edge B is completed while traveling at 0C. When the traveling member 34 travels to a position facing the release cam 56, the follower 50 moves toward the release cam 56.
The presser plate 45 is pushed down and separated from the clamp block 41, the end of the strip of cloth held by the clamp mechanism 39 is released, and then the follower 50 is released from the release cam 56. After the presser plate 45 is released and elastically returns to the clamp block 41 side, the running member 34 moves to the lower straight running path 4.
It stops at a standby position near the end of 0C and waits until the next tear starts.

Therefore, the edge of each cloth edge B can be accurately torn along the weft, and the cloth edge tearing operation can be carried out smoothly, and the labor and efficiency of the cloth edge tearing operation can be improved.

In particular, since the traveling member 34 and the clamping mechanism 39 are made to travel backwards to tear the edge of the fabric edge B, the travel range of the traveling member 34 and the clamping mechanism 39 required for tearing is made smaller than the width of the cloth. This has the effect of making it possible to downsize the fabric edge tearing device and making it possible to tear the edge of a wide raw fabric.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the fabric edge tearing device, Fig. 2 is a side view, Fig. 3 is a plan view, and Fig. 4 is a plan view of the fixed clamp mechanism. 5 is an enlarged view taken along the line 1-1 in FIG. 4, FIG. 6 is an enlarged sectional view taken along the line 2-2 in FIG. Figure 8 is a sectional view taken along the line 3-3 in Figure 7, Figure 9 is an enlarged view taken along the line 4-4 in Figure 3,
FIG. 10 is a longitudinal sectional view of the clamp mechanism, and FIG. 11 is a sectional view taken along line 5-5 in FIG. 1...Table, 11...Latching pulley (latching member), 19...Circulation chain (circulation member), 34...
...Travel member, 39...Clamp mechanism, 40A...
Upper straight running road, 40B...first turn running road,
40C...Lower straight running path, 40D...Second turning path, 56...Release cam (release member), B...
...Cloth edge.

Claims (1)

[Claims] 1. An upper straight running path formed along the weft of the edge of the fabric set on the table, a first turning running path connected to the end of this upper straight running path, and a first turning running path at the end of this first turning running path. The running member connected to the endless circulation chain so as to circulate between the connected lower straight running path and the second turnback running path connected to the end of the lower straight running path has the above-mentioned running member. A clamp mechanism is installed that releasably grips a part of the fabric edge at the starting position of the upper straight running path and runs together with the running member while tearing the edge of the fabric edge, and the circulation chain is suspended. Of the pair of sprocket wheels, the sprocket wheel on the side of the first turning path is provided with the clamp mechanism that grips a part of the fabric edge, and the running member is configured to travel around the first turning path. When the belt-like cloth is torn from the edge of the cloth, it is hooked and folded back from the upper straight running road side to the lower straight running road side. The fabric edge tearing device is characterized in that a release member is installed in the middle of the lower straight running path for activating the clamp mechanism and releasing the strip of cloth from the clamp mechanism.