JPH03185175A - Device for tearing fabric selvage - Google Patents

Abstract

PURPOSE:To provide smooth and efficient tearing operation by successively and precisely tearing a fabric selvage along weft while turning back and running a running member connected to a revolving chain in a state in which the fabric selvage corner part is gripped and held with a clamping mechanism. CONSTITUTION:A fabric selvage set on a table 1 is subjected to tearing operation. In the process, a running member 34 connected to an endless revolving chain 19 running on a revolving circuit composed of the upper direct advance running passage (40A), the first turnback running passage (40B), the lower direct advance running passage (40C) and the second turnback running passage (40D) is moved from a standby position to a starting position. A corner on the side of starting tearing of the aforementioned fabric selvage is then gripped and held with a clamping mechanism 39 and a cut line is simultaneously formed in a tearing starting position with a cutter. The running member 34 is then run to successively tear the fabric selvage along weft. When the running member 34 passes the first turnback running passage, the resultant torn beltlike fabric piece is hooked with a hooking pulley 11 to release the aforementioned fabric piece from the clamping mechanism 39 at the position of a release cam 56. The running member is then stopped to stand by to the start of the next operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention involves stitching the ends of a plurality of raw cloths with a sewing machine to tie each raw cloth. 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.

[Conventional technology] In order to remove dirt, scratches, folds, poor cutting, and other defects from the edges of raw cloth transported to the factory, conventional methods have been to manually cut the edges of each raw cloth to the width of the cloth. It was tearing in different directions.

[Problems to be Solved by the Invention] Therefore, there are problems such as the work of tearing the edges of the fabric is complicated, reducing work efficiency and requiring labor. This was an obstacle when doing so.

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 the daple, and a straight running path connected to the end of the upper straight running path. a first turning road; a lower straight running road connected to the end of the turning road;
The traveling member connected to the endless circulating member so as to travel in a circular manner along the second turning route connected to the end of the lower straight traveling route has a starting position at the starting end of the upper straight traveling route. A clamp mechanism is installed that runs together with the running member while releasably gripping a part of the fabric edge and tearing the edge of the fabric edge, and the running member moves from the first turn-around running path to the lower straight running path. a hanging member for hanging a band-like cloth piece torn from the cloth end when the traveling member enters the cloth in a folded manner; It has a configuration that includes a release member for releasing it from the mechanism.

[Function] While the clamp mechanism attached to the circulating traveling member grips a part of the edge of the cloth set on the table,
When the traveling member travels from the start position through an upper straight traveling path, a first turning traveling path, and a lower straight traveling path, the clamping mechanism runs back together with the traveling member while tearing the edge of the cloth edge. The edge of the cloth end is torn, and the strip-shaped cloth piece torn from the cloth end is hung in a folded manner on a hanging member installed near the first turning path of Moekki. When the tearing of the edge of the cloth end is completed, the strip-shaped cloth piece gripped by the clamp mechanism while the running member passes through the lower straight running path is released from the clamp mechanism by the release means.

[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.

In addition, since the running member and the clamp mechanism are made to travel backwards to tear the edge of the fabric edge, the travel range of the running member and clamp mechanism required for tearing can be reduced compared to the width of the fabric. This has the effect of making it possible to make the cloth edge tearing device more compact, and also making it possible to tear the cloth edges of wide raw cloth.

[Miura example] Next, one embodiment of the present invention will be described with reference to the drawings.

A sewing machine sequentially stitches the ends of multiple pieces of raw fabric folded vertically so that the folded edges are alternately formed, and each piece of raw fabric is tied to a length suitable for continuous processing. In the opposite automatic tying line, a table 1 for placing the raw fabric is installed at the raw fabric loading station where each raw fabric is brought in, and each raw fabric has its weft direction aligned with the tying of the raw fabric. It is placed on the upper plate 1a at the upper end of the table 1 so as to be perpendicular to the transfer direction (back and forth direction) in the opposite process.

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

Above the front edge of table 1 is a raw cloth A on table 1.
A clamper 62 is installed, which controls the transfer to the sewing station in a state where the end of the overlapped fabric, which overlaps the start of the fabric A' and the end of the raw fabric fabric A' on the lifting table 61, is installed. Both left and right ends are supported by a pair of left and right clamper receivers 63 that releasably grip the clamper 62.

Near the center of the top plate 1a of the table 1 in the front-rear direction, a through hole 1C is formed in the shape of a slit along the weft of the cloth edge B of the raw cloth A on the table 1, and extends almost the entire width of the top plate 1a. At the same time, a cut is formed at the tear start position of the fabric edge B prior to tearing the edge of the fabric edge B, slightly in front and behind the through hole 1C and slightly inward of the left end of the upper plate 1a. A pair of front and rear cutter holders 22 each having a cutter 21 for the purpose of the present invention are installed in an inclined manner with the upper portions of the cutters 21 protruding above the table 1b.

A front cutter 21 is mounted on the table surface 1b on the upper surface of the upper plate 1a.
A pair of front and rear fixed clamp mechanisms 23 and 23 disposed slightly forward and slightly behind the cutter 21 are attached to the clamped part B2 adjacent to the tear start side corner part B1 of the fabric end B.
and the table surface 1b in order to be releasably clamped therebetween.

Both fixing clamp mechanisms 23 have a base plate 24 attached to the table surface 1b, and a pair of protrusions 24a which are protruded from the center of the upper surface of the base plate 24, and whose lower proximal ends are connected to the upper tips of the protrusions 24a. The swinging lever 25, a pair of links 26 whose lower ends are attached to the proximal end of the protrusion 24a, and the upper base end of the swinging lever 25 and the upper end of the link 26, respectively, are attached near the tips. An operation lever 27 is connected to the base plate 24 via a swing lever 25 and a link 26 so as to be tiltable in the vertical direction, and a cloth end B is fastened orthogonally to the tip of the swing lever 25. A holding piece 28a for holding the clamped part B2 of the table surface 1b
and a clamp member 28 formed at the lower end thereof.

When tearing the edge of the cloth end B pulled out from the raw cloth A at the back of the table 10 through-hole IC, the clamp member 28 of the fixed clamp mechanism 23 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 pressed against the table surface 1b by the clamp of the front fixed clamp mechanism 23. It is pressed against the table surface 1b by the member 28. Further, when the edges of a plurality of cloth ends are torn at the same time, the overlapped cloth ends in which the plurality of cloth ends are overlapped are held on the table surface 1b by the fixed clamp machine WJ23.

In the table 1, prior to tying the raw fabric A, the edges of one or more fabric edges B are automatically torn along the weft to create fabric edges with a form suitable for sewing. A tearing mechanism is included for this purpose.

Near the right end of the base plate 2 placed horizontally at the bottom of the table 1, there is a reducer 3 with a motor 4 integrated therein.
iQII, and the drive gear 5 is fitted to the output shaft 3a of this reduction gear 813.

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 @ 7 so as to freely rotate via a bearing, and a driven gear 8 is fitted between the bearing part 6a of the stand 6 and the driven gear 8. An electromagnetic clutch 9 is interposed which is engaged and disengaged in order to transmit the rotation of the gear 8 to the drive shaft 7 or to prohibit transmission of rotation from the driven gear 8 to the drive shaft 7.

A first sprocket wheel 10 is fitted to the rear end of the drive@7, and a strip of cloth torn from the cloth end B is hung on the rear side of the first sprocket wheel 10 in a folded manner. A locking pulley 11 for forming the folded end is rotatably attached concentrically with a bolt, and an electromagnetic clutch 9 is disengaged between the bearing portion 6a of the stand 6 and the first sprocket wheel 10. An electromagnetic brake 12 is interposed for rotating the first sprocket wheel 10 when the motor is rotated.

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 as to be movable in the left-right direction. A driven shaft 17 supported in parallel at the same height is rotatably inserted and supported.

A second sprocket wheel 18 having the same number of teeth as the first sprocket wheel 10 is fitted to the driven wheel 17, and an endless circulating chain 1 is fitted to both sprocket wheels 10.18.
9 is hung so that it can rotate. The circulation chain 19 is driven such that its upper straight portion and lower straight portion 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 plate 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. A pair of upper and lower linear guide portions 14a are provided at the upper and lower portions of 14, with vertical front surfaces and horizontal upper and lower edges, respectively.

14C are formed along the upper straight portion and the lower straight portion of the circulation chain 19, respectively, and have the same cross-sectional shape as the straight guide portions 14a and 14c at both left and right ends of the slideway 14, and have outer Both straight guide portions 14a are curved in an arc shape toward the direction.

A pair of left and right curve guide portions 14b and 14d are formed along the left and right curve guide portions of the circulating chain 19, respectively, and are connected to both left and right ends of the chain 14c.

The outer circumferential edge and inner circumferential edge of the slideway 14 are each formed to have a square cross section.

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

A pair of guide plotters 35 and 35 each having a projecting edge 3'5a projecting from the tip of the inner surface are mounted on the rear side of the running member 34 installed vertically in front of the joint bin 32, facing each other at a distance. It is taken in the shape of W, and both guides are
A joint bearing 33 is slidably inserted into 5Wa, and a running member 34 is connected to the joint bin 32 via the joint bearing 33 and both guide blocks 35 so as to be movable together.

A pair of rectangular plate-shaped swing plates 36 and 36 are inserted into the center of both ends of the front side of the running member 34, and swing through hinge pins 37 and 37 fixed to the running member 34, respectively. At both ends of both swing plates 36, there are two pairs of inner and outer parts that are removably engaged with the outer and inner edges of the slideway 14 through grooves formed in the outer circumferential surface. Transfer rollers 38, 38
Each can rotate (supported by a shaft).

The running member 34 is guided by the slideway 14 via each transfer roller 38 and runs together with the circulating chain 19, and is parallel to the weft of the cloth edge B and runs along the upper straight section 14a of the slideway 14. Running path 40A
A first turnback path 40B is connected to the end of the upper straight path 40A and is formed along the left curved guide portion 14b of the slideway 14; A lower straight traveling path 40 formed along the lower straight guiding portion 14c of the slideway 14.
C, and a second turning path 40D that is connected to the end of the lower straight path 40G and the start end of the upper straight path 40A and formed along the right curved guide portion 14d of the slideway 14. Turn. Upper straight running path 40A
The starting end is the start image where the traveling member 34 starts traveling, and the vicinity of the end of the lower straight traveling path 40C is the starting end of the traveling member 34.
is in the standby position where it stops running 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 are provided in the clamp block 41 whose portion is attached to the tip of the front side of the running member 34.
, 41a are provided in parallel along the direction perpendicular to the front end surface 41b of the clamp block 41, and the 3.
Two clamp holes 41c are recessed.

When the running plate 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 bins 42 are inserted into both through holes 41a of the clamp block 41 so as to be slidable in the axial direction, and a nut 43 screwed into the base end of the slide bins 42 and a nut 43 screwed into the through holes 41a of the through holes 41a They are each urged toward the joint bin 32 by a spring 44 interposed between the stepped portion and the stepped portion.

A presser plate 45 installed on the clamp block 41 in order to releasably grip the corner portion B1 of the cloth edge B between the clamp block 41 and the clamp block 41 is attached to both slide bins 42 by a nut 46 at the tip of both slide bins 42. It is fastened so that it can move together. Three clamp claws 45a, which face each clamp hole 41c of the clamp block 41, are provided on the inner surface of the presser plate 45 so as to project into the clamp holes 41c, and the cloth end B is connected to each clamp hole 41C and each clamp. The clamp block 41 is firmly held between the clamp block 41 and the holding plate 45 in a state where the three parts are deformed into a mountain shape by the claws 45a.

Both slide bins 42 are attached to the base end of the clamp block 41.
The base end portions of the pushing member 47 are attached to the clamp block 41 so as to be able to swing in the moving direction of the slide bin 42, and the base end portions of the pushing members 47 are elastically abutted to each other. The anti-pressing plate 45 is supported by the bolts 48
The swing end of the side is defined.

The tip of the pushing member 47 is formed into a bifurcated shape, and a support bin 49 horizontally suspended in parallel with the joint bin 32 is attached to the tip of the pushing member 47.
A roller-shaped follower 50 is rotatably fitted in the center of the roller.

The holding plate 45 of the clamp mechanism 39 is connected to the through hole 1 of the table 1 when the traveling member 34 travels on the upper straight traveling path 40A.
C and travels in a state of protruding onto the table surface 1b.

When the pushing member 47 swings toward the presser plate 45 side, both slide bins 42 are pushed toward the presser plate 45 side and the presser plate 45
is separated from the clamp block 41, a gap is formed between the clamp block 41 and the presser plate 45, and the presser plate 45
The corner portion B1 of the cloth end B that was held down is released. Clamp block 41 at tearing start side corner B1 of fabric end B.
and the pressing member 47 by inserting it into the gap between the holding plate 45 and the pressing member 47.
When the presser plate 45 is released, the presser member 47 is swung back by the elastic force of the spring 44, and the presser plate 45 is pressed against the clamp block 4.
The corner portion B1 of the cloth end B is compressed by M¥1 between the clamp block 41 and the presser plate 45.

A push-up cylinder 52 is attached to a bracket 51 that is erected on the base plate 2 facing the second sub-Oket wheel 18.
is attached vertically, and the front side of the lifting member 53 connected to the piston end 52a of the push-up cylinder 52 is slidable in a slide guide 51a provided vertically protruding from the rear side of the bracket 51. m engaged with
A moving part 53a is formed, and a running member 3 is formed on the upper surface of an upper plate 53b formed horizontally at the upper end of the elevating member 53.
A push-up piece 54 is fixed for pushing up the follower 5o and separating the press plate 45 of the clamp mechanism 39 from the clamp block 41 when the follower 4 travels to the starting position of the starting end of the upper straight running path 40A and stops. has been done. When the traveling member 34 stops at the start position, the follower 5o stops right above the push-up piece 54, and when the piston rod 52a of the push-up cylinder 52 moves upward in this state, the follower 50 is moved by the push-up piece 54. The presser plate 45 is pushed up and separated from the clamp block 41.

The running member 34 is held in a state where the corner portion B1 of the fabric end B on the tear start side is held between the clamp block 41 and the presser plate 45.
When the running member 34 runs from the start position, the running member 34 runs near the starting ends of the upper straight section 40A, the first turnback running path 40B, and the lower straight running path 40G, and the clamp mechanism 39 tears the edge of the cloth edge B. As it travels back, the edge of the fabric edge B stays on the weft and is torn sequentially, and the leading plate 3
5 is from the first turning road 40B to the lower straight road 40C.
The band-shaped cloth piece torn from the cloth end B when the cloth enters the storage area is hooked to the hooking pulley 11 and folded back, and is then folded back to the running member 35.
The tearing of the edge of the cloth end B is completed while the cloth travels on the lower straight traveling path 40G.

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 mounted to release the end 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 traveling path 40C, the follower 5
0 slides into contact with the cam surface 56a of the release cam 56 and is pressed down, and the presser plate 45 is pushed downward and the clamp block 41
The clamping mechanism 39 releases the end of the strip of cloth held by the clamp mechanism 39, and the strip of cloth falls. 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 45 elastically returns upward to abut against the clamp block 41, causing the clamp block 41 and presser plate 45 to The circumferential gap is closed.

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

When performing automatic tearing of scraps of fabric 1B, first press the preparation switch, the traveling member 34 travels from the standby position to the starting position and stops, and then the push-up cylinder 52
The piston rod 52a moves upward and the follower 50
is pushed up, and the presser plate 45 is pushed up and separated from the clamp block 41. 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 then press the set switch, the piston end 52a of the push-up cylinder 52 moves downward, the follower 50 is released, the presser plate 45 elastically returns downward, and the cloth end B The corner part B1 is the clamp block 41
and a holding plate 45. In this state, after forming a cut with the cutter 21'c at the tearing start position of the fabric edge B,
By tilting the operating levers 2 and 7 of the fixed clamp mechanism 23, the clamped part B2 adjacent to the corner part B1 of the cloth 1B is clamped between the clamp member 28 and the table surface 1b.

Next, when the operation button is pressed, the clamp mechanism 39
The traveling member 34 starts traveling from the star 1- position while gripping the corner portion B1 of While the clamp [39 grips the corner B1 of the cloth edge B and travels back, the edge of the cloth 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 while the traveling member 34 is traveling on the lower straight traveling path 40C, the cloth end B is torn off. The tearing of the edges is completed. When the traveling member 34 travels to a position n facing the release cam 56, the follower 50
is pushed down by the release cam 56, the presser plate 45 is separated from the clamp block 41, the end of the strip of cloth gripped by the clamp mechanism 39 is released, and then the follower 50 is released from the release cam 56. After the holding plate 45 elastically returns to the clamp block 41 side, the running member 34 stops at a standby position near the end of the lower straight running path 40C and waits until the next tearing starts.

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

In particular, since the running member 34 and the clamping mechanism 39 are made to travel backwards to tear the edge of the fabric edge B, the running movement range of the running member 34 and the clamping mechanism 39 required for tearing is made smaller than the width of the fabric. 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 drawings]

The drawings show one embodiment of the present invention, and FIG. 1 shows a cloth edge puller. A front view of Jti, FIG. 2 is a side view, FIG. 3 is a plan view, FIG. 4 is a plan view of the fixed clamp mechanism, and FIG. 5 is an enlarged view taken along the line Xl-Xl in FIG. 4. Figure 6 is the first
7 is an enlarged front view of the running member and clamp mechanism, and 8 is an enlarged cross-sectional view of X2-X21m in the figure.
31i1 sectional view, FIG. 9 is an enlarged view taken along the line X4-X4 in FIG. 3, FIG. 10 is a sectional view taken along the line Ili of the clamp mechanism, and FIG. 11 is a sectional view taken along the line X5-X5 in FIG. 1... Table 11... Latching pulley (latching member) 19... Circulating chain (circulating member) 34... Running member 39... Clamp mechanism 40A... Upper straight running path 40B ...First turning path 40G...Bottom 111 Straight driving path 400...Second turning path 56...Release cam (release member) B...Cloth end

Claims (1)

[Claims] 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 connected to the end of this turning running path. The running member connected to the endless circulating member so as to travel circularly between the lower straight running path and the second turnback running path connected to the end of the lower straight running path has the above-mentioned upper straight running path. A clamp mechanism is installed that runs together with the traveling member while releasably gripping a part of the cloth end at a starting position at the starting end of the path and tearing the edge of the cloth end, and the traveling member is attached to the first turning traveling path. a hanging member for hanging a band-shaped piece of cloth torn from an end of the cloth in a folded manner when the running member enters the lower straight running path; A cloth edge tearing device comprising: a release member for releasing the strip of cloth from the clamp mechanism.