JPH06238079A - Cloth piece pickup device and cloth piece pickup method - Google Patents

Abstract

PURPOSE:To provide a device capable of confirming to the enhancement in speed of operation and picking up cloth pieces laid in the laminated state from the upper part one by one without damaging them. CONSTITUTION:A cloth piece pick-up device is provided with a pressing roller 31 for pressing one end part of a cloth piece 2 from above; a hook roller 32 having a hook needle 32a on a part of the circumferential surface, making contact with, and being separated from the other end part of the cloth piece 2 and feeding the cloth piece 2 in the direction opposite to the pressing roller 31; a feed roller 33 provided adjacent to the feeding-out side of the cloth piece 2 and driven to rotate; and a freely rotating pressing roller 34 making contact with and being separated from the cloth piece feed surface. By using this device, the hook roller 32 is brought into contact with the other end part surface of the cloth piece 2, the cloth piece 2 on the top layer is raised by the hook needle 32a, and the same cloth piece 2 is nipped between the feed surface of the rotating feed roller 33 and the pressing roller 34 to transfer the cloth pieces 2 one by one to the following process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cloth piece pick-up device for transferring a cloth piece to a cloth piece sewing machine, for example, which continuously attaches the cloth piece of the front pants of jeans or the like to a continuous slide fastener chain. More particularly, the present invention relates to a pick-up device and a pick-up method for a cloth piece suitable for high-speed transfer in which picked-up laminated cloth pieces are reliably picked up and transferred to the next step without being damaged one by one.

[0002]

2. Description of the Related Art In the work of continuously attaching pieces of cloth to a continuous slide fastener chain, it is necessary to feed the pieces of cloth every one to two seconds with the recent increase in speed of sewing machines. Correspondingly, in order to perform stable work over a long period of time, it is necessary to reliably feed the cloth pieces one by one to the sewing portion.

That is, in the cloth piece pick-up device of this type, the cloth pieces stacked at the cloth piece supply position as described above are picked up one by one and picked up, and then supplied to the sewing portion which is the next step. However, at this time, if even one cannot be picked up, or if two or more are picked up at the same time, in the worst case, the machine has to be stopped, resulting in a decrease in operating efficiency. There is no loss, which leads to higher costs. Therefore, some mechanisms have been proposed so far for surely picking up the cloth pieces one by one.

For example, according to the cloth piece pick-up method disclosed in Japanese Patent Laid-Open No. 1-221196, when picking up cloth pieces stacked in the longitudinal direction from the top,
It uses a pair of front and rear rollers. On the peripheral surface of each roller, a plurality of hooking needles are projected parallel to the axis, and both rollers are lowered to press the surface of the cloth piece, and at the same time, both rollers are moved in a predetermined direction in the direction of pulling the cloth piece. After being rotated by an angle, the cloth pieces are conveyed to a predetermined position while being gripped by the rollers, and the rollers are rotated in the opposite direction to the rotation to release the cloth pieces from the rollers.

In the method of picking up a cloth piece disclosed in, for example, Japanese Patent Publication No. 63-28635, a pickup mechanism is provided on the front surface of the cloth pieces laminated in the lateral direction so that the cloth piece can be removed from the front surface. We are picking up one by one.
In this example, by swinging a plate member that swings around one long side as a swing center, a roll member rotatably attached to the tip end portion of the plate member and a claw protruding at a right angle from the plate member portion inside thereof are provided. In between, pick up by picking only the cloth piece on the front. Furthermore, US Pat.
In the specification of No. 85,471, two sorting plate members are operated synchronously to separate one cloth piece from a succeeding cloth piece, and a claw that horizontally reciprocates along the surface of the cloth piece. A pickup mechanism for hooking and transferring to the side is disclosed.

[0006]

By the way, in the cloth piece pick-up method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-221196, the cloth piece gripped by the two rollers is unnecessarily strained. Tears are likely to occur in a part of them, and both rollers are used for gripping, transferring and releasing the cloth piece.
Since the operation is repeated, it is difficult to follow the high-speed operation of the sewing machine.

Further, in the cloth piece pick-up method disclosed in the above Japanese Patent Publication No. 63-28635 and US Pat. No. 3,685,471, the cloth pieces are laminated in the lateral direction in the cloth piece supply section. There is. Normally, in this type of cloth piece processing machine, the cloth pieces are often processed in a horizontal state in the processing section, and therefore, as disclosed in the above-mentioned publication, the cloth pieces are stacked in the lateral direction and supplied. In that case, it is necessary to change the cloth piece from the vertical state to the horizontal state during the transfer to the processing section. This means that an additional operation is added to the operation part of the transfer device during the transfer, which not only complicates the mechanism but also makes it difficult to cope with the speedup. Furthermore, when the cloth pieces are laminated in the lateral direction, a mechanism for holding the posture of the cloth pieces on the pickup side is added, which further complicates the entire mechanism.

The present invention was developed to solve the above-mentioned problems, and its purpose is to be able to sufficiently cope with speeding up of operation, and to damage one by one from cloth pieces in a laminated state. It is an object of the present invention to provide a cloth piece pickup device which is provided with a rational mechanism capable of surely picking up without fail and which can simplify the mechanism.

[0009]

In order to achieve the above object, a cloth piece pick-up device of the present invention is a cloth piece pick-up device for picking up stacked cloth pieces one by one from above. Has a pressing means for pressing one end of the cloth from above and a hooking needle on a part of the peripheral surface, and comes in contact with and separates from the other end of the cloth piece, and sends out the cloth piece in a direction opposite to the pressing means. And a feed roller that rotates in synchronization with the hook roller, and a pressure roller that comes into contact with and separates from the cloth piece feed surface of the feed roller and that rotates in cooperation with the feed roller. Further, it has a guide plate which has one end adjacent to the upper surface of the pressure contact roller, extends horizontally to the cloth piece delivery side, and cooperates with the pressure contact roller.

Here, the pressing means may be, for example, a simple pressing roller, but preferably a pressing block having a hooking needle at the bottom thereof and a block for removing the cloth piece from the hooking needle are adopted. .

The feed roller may be fixedly installed at a front position of the hook roller in the cloth piece feeding direction, or may be arranged coaxially with the hook roller. Further, the feed roller may be provided. However, there are cases where the drive roller is actively driven and cases where the feed roller is driven to rotate actively and driven to rotate when the feed roller is brought into pressure contact with the same roller. Further, the hooking roller is normally capable of rotating in a predetermined angle range in the forward and reverse directions.

On the other hand, the cloth piece pickup method of the present invention is
A method of picking up stacked cloth pieces one by one using the cloth piece pick-up device, wherein the other end surface of the cloth piece whose surface is pressed by the pressing means is driven to rotate. When the roller is brought closer, the uppermost cloth piece is hooked on the hooking needle of the hooking roller and at the same time raised, and the other end surface of the cloth piece is brought into contact with the feeding surface of the feed roller which is rotating, and at the same time, the pressure contact roller. Is moved and the other end of the cloth piece is brought into pressure contact with the feed roller to repeat each operation, thereby transferring the cloth pieces one by one to the next step, and at the pickup position of the cloth piece. Is configured to sequentially raise the laminated cloth pieces by the thickness of one piece in correspondence with the pickup operation.

[0013]

The operation of the cloth piece pick-up device of the present invention will be described by taking as an example the case where a simple pressing roller is used as the pressing means. As for the pressing roller, all the cloth pieces stacked in the storage box are picked up by the hooking roller. It stops at the pressing position until all the cloth pieces have been picked up and rises to the standby position when all the cloth pieces have been picked up, and waits at that position until the succeeding cloth piece storage box is conveyed to the transfer section. When the subsequent storage box is conveyed to the pressing portion and stopped, the pressing roller descends and presses the rear end portion of the surface of the uppermost piece of cloth stored in the storage box.

The hooking roller repeats forward and reverse rotations within a predetermined angle range, and every time a piece of cloth is picked up by a hooking needle protruding from the surface thereof, a rising position above the cloth piece and a surface contact position of the cloth piece. Reciprocates between.

The feed roller is installed, for example, at a raised position of the hooking roller and at a lower surface position substantially the same as the lower surface of the roller, and is constantly rotating in the feeding direction of the cloth piece. When the front end of the piece is hooked and lifted, the front end of the cloth piece normally comes into contact with the lower end surface of the feed roller.

The pressing roller is rotatably installed in front of the feeding roller in the feeding direction of the cloth piece and obliquely downward.
It reciprocates diagonally between a standby position diagonally below the feed roller and a raised position in contact with the feed roller. The timing of this reciprocating movement is also made by commands from a control unit (not shown), and a piece of cloth is hooked on the hooking needle and rises together with the hooking roller, and at the same time, the pressure contact roller is slanted upward toward the feed roller. Then, the tip of the cloth piece is clamped by the feed roller and the pressure contact roller.
At this time, the guide plate obliquely reciprocates between the raised position and the standby position together with the pressure contact roller.

In this case, since the feed roller is rotating during the reciprocating movement of the pressure contact roller, the end portion is sandwiched between the feed roller and the pressure contact roller and positively fed forward, at the same time, the same piece of cloth is squeezed. Can be easily removed from the hooking needle of the hooking roller without any resistance. The cloth piece thus sent out by the feed roller is guided on the guide plate and is sent out forward. When one piece of cloth is fed forward, the pressing roller presses the surface of the cloth piece to be picked up next time at the same position where the surface of the cloth piece is pressed. Subsequently, the above-described operation is repeated, and the cloth pieces stacked inside the storage box are sequentially picked up one by one from the upper layer and sent forward.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention applied to a sewing machine for continuously sewing jeans cloth pieces to a continuous slide fastener chain will be specifically described below with reference to the drawings. The present invention is not limited to the examples below.

In FIG. 1, the cloth piece pick-up device 30 of the present invention picks up the cloth pieces 2 one by one from the cloth piece conveying device 1, and the cloth piece transfer device 40 aligns the front and back sides.
The schematic structure of the sewing machine for continuously supplying to the sewing portion 60 is shown.

FIG. 2 is a partially enlarged perspective view showing a schematic structure of a cloth piece pickup device 30 which is a typical first embodiment of the present invention. Cloth piece pickup device 30 according to the illustrated example
Is a pressing roller 31d as a pressing unit that presses the rear end (left side in the figure) of the cloth pieces 2 stored in a stacked state in the storage box 20 stopped at the cloth piece transfer section, and the cloth piece 2 Provided adjacent to the hooking roller 32 that reciprocates between the surface of the front end (right side in the figure) and the surface of the other end, and the cloth piece delivery side (right side in the figure) at the upper position of the hooking roller 32. The feed roller 33, a pressure contact roller 34 that reciprocates between the feed roller 33 and a front diagonally lower side of the cloth feed-out side of the feed roller 33, and an end portion of the feed roller 33 adjacent to the upper surface of the pressure contact roller 34. And a guide plate 35 that horizontally extends forward and operates together with the pressure roller 34.

3 to 6 are explanatory views showing a concrete structure of the cloth piece pick-up device 30 and its operation.
First, the structure and operation of the apparatus of this embodiment will be described in detail with reference to FIG. 3. The cloth piece pickup device 30 is installed above the cloth piece supply unit of the cloth piece conveying device 1 as shown in FIG. . Further, a cloth piece transfer device 40 for aligning the front and back of the cloth piece 2 and transferring the cloth piece 2 to the subsequent sewing portion 60 is provided opposite to the cloth piece feeding unit of the cloth piece pickup device 30.

The pressing roller 31d is installed above the rear end portion of the cloth piece 2 stored inside the cloth piece storage box 20 which is stopped below the pickup section. A bracket 31a hung from the frame is rotatably supported by the rod end of an air cylinder 31b fixed to the lower end of the bracket 31a. A photoelectric detector 31c is attached to the support portion of the pressing roller 31, and the detector 31c identifies the front and back of the cloth piece 2 and the presence / absence of the cloth piece 2, and sends the signal to a controller (not shown).

The pressing roller 31d stays at the pressing position until all of the cloth pieces 2 stacked in the storage box 20 are picked up by the hooking roller 32, and all the cloth pieces 2
When the pickup is completed, it rises to the standby position and stands by at that position until the succeeding cloth piece storage box 20 is conveyed to the transfer section. When the subsequent storage box 20 is conveyed to the pressing portion and stopped, the pressing roller 31d descends and presses a fixed position on the surface of the cloth piece 2 stored in the storage box 20.

The hook roller 32 is fixed to the output shaft of the drive source at a predetermined interval as shown in FIG.
A plurality of hooking needles 32a are formed on each circumferential surface in a straight line parallel to the axis line, and have a length substantially equal to the thickness of one piece of the cloth piece 2. The hook roller 3
2 is installed so as to be able to move up and down above the front end portion of the cloth piece 2 together with the drive source, and is also attached to the rod end of a cylinder also installed in a machine frame (not shown). The operation of this cylinder is based on a command from a control unit (not shown). The hooking roller 32 is driven to rotate counterclockwise in FIGS. 3 to 6, and the cylinder is operated each time the cloth piece 2 is picked up by the hooking needle 32a one by one.
It reciprocates between the ascending position shown in FIG. 4 and the descending position shown in FIG.

The feed roller 33 is installed at a raised position of the hooking roller 32 and at a position where a part of the roller 32 is fitted between the pair of rollers of the hooking roller 32, and is hung from a machine frame (not shown). The bracket 33a is fixed to the lower end of the bracket 33a together with the electric motor 33b, and constantly rotates in the feeding direction of the cloth piece 2. Therefore, when the hooking roller 32 hooks the front end of the cloth piece 2 and ascends, the front end of the cloth piece 2 contacts the lower end surface of the feed roller 33 as shown in FIG.

The pressure roller 34 is the feed roller 3
3 is rotatably supported by the rod end of a cylinder 34a installed diagonally below and in front of the cloth piece feeding direction, and is provided at a waiting position diagonally below the feed roller 33 shown in FIG. It obliquely reciprocates between the abutting raised position shown in FIG. The timing of this reciprocating movement is also made by commands from a control unit (not shown), and one piece of cloth 2 is hooked on the hooking needle 32a (FIG. 4) and rises together with the hooking roller 32, At the same time that the tip end contacts the lower surface of the feed roller 33 (FIG. 5), the pressure contact roller 34 moves diagonally upward toward the feed roller 33 (FIG. 6), and the tip end of the cloth piece 2 comes into pressure contact with the feed roller 33. It is held by rollers 34.

A guide plate 35 is fixed to the rod of the cylinder 34a, one end of which is close to the upper surface of the pressure roller 34 and which extends horizontally in the feeding direction of the cloth piece 2. Therefore, like the pressure contact roller 34, the guide plate 35 obliquely reciprocates between a standby position obliquely below the feed roller 33 and a raised position in contact with the feed roller 33.

During the reciprocating movement of the pressure contact roller 34, the feed roller 3
Since 3 is rotating, the cloth piece 2 whose end portion abuts the feed roller 33 is sandwiched between the feed roller 33 and the pressure contact roller 34 and positively fed forward, and at the same time, the cloth piece 2 does not resist. Hooking needle 32a of the hooking roller 32
Get out of. The cloth piece 2 thus fed by the feed roller 33 is guided by the upper surface of the guide plate 35 and fed forward.

When one piece of cloth 2 is fed forward, the pressing roller 31d descends to a position for pressing the surface of the cloth piece 2 and presses the surface of the cloth piece 2 to be picked up next time. Then, the above operation is repeated, and the storage box 2
The cloth pieces 2 laminated inside 0 are sequentially picked up one by one from the upper layer and sent forward.

FIG. 7 is a partial perspective view showing a schematic structure of the pressing means 36 of the cloth piece pickup device 30 which is a typical second embodiment of the present invention. In this embodiment, the part different from the above embodiment is that a pressing block portion 37 and a cloth piece removing block 38 are adopted as the pressing means instead of the pressing roller 31d. In the apparatus of this embodiment, the pressing means 3
All other configurations and operations except 6 are the same as those of the first embodiment device. Therefore, in the following description, the pressing means 36, which is a feature of the present embodiment, will be mainly described with reference to FIGS. 8 to 12 are explanatory views showing the linking operation of the pressing means 36 and other constituent members.

In FIG. 8, the pressing means 36 comprises a pressing block portion 37 and a cloth piece removing block portion 38 which is arranged adjacent to the pressing block portion 37 in the cloth piece feeding direction. The pressing block portion 37 has a pressing block 37b from which a plurality of piercing needles 37a project in the width direction of the bottom surface thereof, and a cooperating block 37c that moves up and down together with the pressing block 37b. This collaboration block 3
A connecting rod 37d is slidably inserted in the cloth piece feeding direction inside 7c, and one end of the connecting rod 37d is fixed to the pressing block 37b.
The other end of d is provided with a spring 37e on the cooperating block 37c.
Are connected via According to the illustrated example, the pressing block 37b is located in front of the cooperating block 37c (on the right side of the drawing).
Although a tension spring is used as the spring 37e, the arrangement of the pressing block 37b and the co-moving block 37c may be reversed from that shown in the drawing. A spring is adopted. In any case, the pressing block 37b
Can move in the feeding direction of the cloth piece 2 against the co-moving block 37c against the spring force.

Similar to the pressing roller 31d in the first embodiment, the pressing block portion 37 has a rear end portion of the cloth piece 2 stored inside a cloth piece storage box (not shown) which is stopped below the pickup portion. It will be installed above. That is, the cooperating block 37c is a bracket 39a that is vertically provided from the machine frame 39.
Is fixed to the rod end of an air cylinder 37f fixed to the lower part on the side away from the hook roller 32. Further, a photoelectric detector 31c is attached to the cooperating block 37c of the pressing block portion 37, and the detector 3
The front and back and the presence / absence of the cloth piece 2 are identified by 1c, and the signal is sent to a control unit (not shown). The pressing block portion 37 descends to the pressing position each time the cloth pieces 2 stacked in a storage box (not shown) are picked up by the hooking rollers 32 in sequence, and waits when the cloth piece 2 on the surface layer is picked up. Ascend to position.

On the other hand, the cloth piece removing block portion 38 has a cloth piece removing block 38a and an air cylinder 38b for moving the cloth piece removing block 38a up and down, and the cloth piece removing block 38a is provided at the rod end of the air cylinder 38b. Is stuck. The air cylinder 38b is fixed to the bracket 31a and is arranged between the pressing block portion 37 and the hook roller 32. The air cylinder 38b is also the air cylinder 3 of the pressing block portion 37.
Like 7f, it operates by a command from a control unit (not shown). The cloth piece removing block portion 38 is normally located at the standby position of the pressing block portion 37, and when the cloth piece 2 moves up while being pierced by the piercing needle 37a of the pressing block 37b, the cloth piece removing block portion 38 descends to remove the cloth piece 2. It is pushed down from above to operate so as to be removed from the puncture needle 37a.

When the previous pickup of the cloth piece 2 is finished, the pressing block 37b is hooked by the hook roller 32.
In synchronism with the above, it descends and presses a fixed position on the surface of the cloth piece 2 stored in the storage box as shown in FIG. Simultaneously with this pressing, the hooking roller 32 is driven and rotated counterclockwise in the figure, and the cloth pieces 2 are picked up one by one by the hooking needle 32a. At this time, the pressing block 37b resists the tension spring 37e through the connecting rod 37d inserted into the cooperating block 37c and the cloth piece 2
Since it moves in the feeding direction, the excessive tension can be released by following the movement of the cloth piece 2 when the cloth piece 2 is pulled by the hooking needle 32a of the hooking roller 32, and the piercing needle 37a of the pressing block 37 can be released. Also, the cloth piece 2 is not damaged by the hooking needle 32a of the hooking roller 32.

Here, as shown in FIG. 10, the hooking roller 32 starts to move up while being driven and rotated, and then the pressing block 37b starts to move up with a predetermined time lag. The hook roller 32 reaches the upper limit, and the feed roller 33 and the pressure contact roller 34 move the cloth piece 2 as shown in FIG.
At the same time that the front end of the cloth piece is clamped, the cloth piece removing block portion 38 is actuated to lower the cloth piece removing block 38a, and the upper surface of the cloth piece 2 is pushed down by the cloth piece removing block 38a to hook the cloth piece 2 on the hook needle 32a. Remove from. The cloth piece 2 removed from the hooking needle 32a is guided by the guide plate 35 as shown in FIG. 12 and is transferred to the next step. After that, the same operation is repeated to sequentially and reliably pick up the laminated cloth pieces 2 one by one.

FIG. 13 is an enlarged perspective view showing a part of the cloth piece conveying device 1 for conveying the cloth piece 2 to the cloth piece pickup device 30 of the present invention. According to the illustrated example, the rectangular frame-shaped guide wall 3 is divided into left and right by the central intermediate guide wall 4. Both ends of the intermediate guide wall 4 are set to be shorter than the long side length of the rectangular frame-shaped guide wall 3 by a predetermined length. Therefore, both ends of the intermediate guide wall 4 and short side parts of the guide wall 3 are set. There is a predetermined distance between them. At the bottom of each of the left and right spaces defined between the left and right long sides of the rectangular frame-shaped guide wall 3, four endless transport chains 5 are provided on both the inner wall surface of each guide wall 3 and the left and right sides of the intermediate guide wall 4 for convenience. It is installed along each wall. The four endless transport chains 5 are driven continuously or intermittently by a drive source such as an electric motor (not shown), but the endless transport chains 5 arranged in the left and right spaces are in opposite directions. Driven to.

At the end of the endless transport chain 5,
In addition, a large number of rollers 7 are attached to both side surfaces of the intermediate guide wall 4 in a space formed between both ends of the guide wall 3 and short sides of the guide wall 3 so as to be orthogonal to the endless transport chain 5. The guide table 6 is installed. Here, the upper surface of the roller 7 and the upper surface of the endless transport chain 5 share substantially the same horizontal plane. One end of each downstream end of the endless conveyor chain 5 corresponding to one end of the guide table 6 and driven in the opposite direction is connected to the endless conveyor chain 5 by an air cylinder 8 as shown in FIG. A pusher 9 which is operated in a direction orthogonal to is installed.

With the above-described structure, the cloth piece storage box 20 conveyed to the end by the endless conveying chain 5 is pushed at one side by the pusher 9 at one side thereof, and is rolled in the direction orthogonal to the endless conveying chain 5. 7 is transferred onto the other adjacent endless transfer chain 5 which is driven in the opposite direction, and is transferred downstream on the same endless transfer chain 5. At this downstream end, the other side of the cloth piece storage box 20 is pushed again by the other pusher 9, and is returned to the upstream end of the original endless transport chain 5 via the roller 7. . In this way, the cloth piece storage box 20 is circulated and conveyed on the left and right endless conveyance chains 5 via the rollers 7. Therefore, the left and right endless transport chains 5 and the rollers 7 form a circulating transport path for the cloth piece storage box 20 along the inner wall surface of the rectangular frame-shaped guide wall 3.

In the illustrated example, as shown in FIG. 13, in addition to the above-mentioned structure, an elevating plate 11 controlled by a cylinder 10 is further provided. According to the examples shown in FIGS. 1 and 13, the installation position of the lifting plate 11 is the installation portion of the cloth piece pickup device 20, and the cloth piece storage box 20 is located farther than the downstream end of the one endless transport chain 5. It is the central part of the transport path corresponding to the upstream side by one. Then, the cylinder 10 receives a signal from a control device (not shown) and operates to gradually raise the elevating plate 11 in accordance with the pick-up speed of the cloth piece 2. Further, in the illustrated example, the lifting plate 1
1. A pair of left and right stoppers 1 in the downstream conveying path adjacent to 1.
2 are provided. The stopper 12 can be moved up and down by a cylinder 13 and is lowered when the supply of all the cloth pieces 2 in the preceding cloth piece storage box 20 is completed, and the stopper 12 is moved up and down.
After the passage of 0, the subsequent cloth piece storage box 20 conveyed up on the endless conveyance chain 5 is positioned at the same position and stopped.

14 to 16 show the construction of the cloth piece storage box 20, FIG. 14 is a plan view of the same, and FIG. 15 is a line A--A of FIG.
16 is a side view of the cloth piece storage box 20. As is clear from these drawings, in the cloth piece storage box 20 shown in the drawing, the central portion of the bottom plate 21 is opened in a rectangular shape, and the size of the opening is such that the elevating plate 14 can pass through. Further, guide rollers 22 are pivotally supported at the four corners of the bottom plate 21 so that part of the roller surface is projected from the bottom plate 21 and each freely rotates around a vertical axis. Further, long side wall members 22 and 23 having an L-shaped cross section are attached along the left and right (upper and lower sides in FIG. 15) of the bottom plate 21, and one of the long side wall members 22 is attached. A plurality of long holes 22a that are long in the width direction are formed in the mounting portion of the cloth. When mounting the side wall material 22, the long side wall material 22 is moved in the width direction to change the mounting position, and a cloth to be stored. The face-to-face distance with the other side wall member 23 can be adjusted according to the width dimension of the piece 2. Further, a plurality of bar members 24 are erected at a predetermined interval at one end portion of the bottom plate 21 in the longitudinal direction along the opening edge, and the upper end of the bar members 24 is a single connecting member 24.
It is connected by a.

On the upper surface of the bottom plate 21, a cloth piece mounting plate 25 having a shape fitted between the pair of left and right long side wall members 22 and 23 and the plurality of rods 24 is formed. It is placed so as to be fitted between the side wall members 22 and 23 and the plurality of rod members 24. The cloth piece mounting plate 25 has a substantially rectangular shape as shown in FIG. 15, and a plurality of slit-shaped long holes 25a are parallel to the width direction in a substantially half part on the side opposite to the side of the bar 24. Is formed in.

A pillar 26 is erected at the center of one end edge of the bottom plate 21 to which one long side wall member 23 is attached, and the support member 24 at the same end is opposite to the installation position of the bar member 24. An L-shaped bracket 27 is erected on the end of the.
The upper end portion and the intermediate portion of the column 26 and the L-shaped bracket 27 are connected by upper and lower sliding guide bars 28a and 28b. The vertical sliding guide bars 28a and 28b are slidably movable at one end of a vertical lattice member 29 which constitutes the remaining side wall of the cloth piece storage box 20 and the upper sliding guide bar 28.
It is attached so that it can be fixed at any position by tightening or loosening the fixing screw 28c attached to a. The vertical grid member 29 is an L-shaped frame member 2 as is apparent from FIG.
9a and a plurality of grid members 29b vertically provided at a predetermined interval from the horizontal frame portion at the upper end. The interval between the grid members 29b is equal to the interval between the slit-shaped long holes 25a formed in the cloth piece mounting plate 25, and the thickness of the grid member 29b is inserted into the slit-shaped long holes 25a. It is set to the thickness.

According to the cloth piece conveying device 1 having the above-mentioned structure, first, the cloth piece storage boxes 20 of which the number is necessary (11 in the example shown in FIG. 1) to be placed on the cloth piece conveying device 1 are provided. To prepare. In this preparation, the long side wall member 22 is moved and adjusted in accordance with the width of the cloth piece 2 and fixed, and the vertical grid member 29 is also adjusted in accordance with the length of the cloth piece 2 in the vertical sliding guide bar. 28a and 28b are slid, and the fixing screw 28c is tightened at a predetermined position to fix the position of the vertical grid member 29. The required number of cloth pieces 2 are stacked and stored in the cloth piece storage box 20 thus prepared.

The prepared cloth piece storage box 20 is set on the conveying path of the cloth piece conveying device 1. Here, when the sewing machine is started, the cloth piece conveying device 1 of the present invention, the cloth piece pickup device 30, the cloth piece transfer device 40, and the sewing portion 60 are operated in synchronization at the same time based on a command from a control unit (not shown). To start.
On the cloth piece conveying device 1, the cloth piece pickup device 30 operates as described below to pick up the cloth pieces 2 stored in a stacked state in the cloth piece storage box 20 located below the pickup device 30 one by one from the top. The next step, cloth piece transfer device 4
Supply 0. At this time, the operating cylinder 10 of the lifting plate 11 receives a signal from a control unit (not shown) and raises the lifting plate 11 while making it correspond to the pick-up speed of the cloth piece 2. Here, when the cloth piece 2 disappears from the inside of the cloth piece storage box 20, the stopper 12 descends, waits for the empty cloth piece storage box 20 to pass, and again rises to be conveyed on the endless conveying chain 5. The subsequent cloth piece storage box 20 that comes in is positioned at the same position and stopped. At this time, the empty cloth storage box 20 transported to the end by the endless transport chain 5 is
At that position, one side is pushed by the pusher 9 and is transferred on the roller 7 in a direction orthogonal to the endless transport chain 5,
It is transferred onto the other adjacent endless transport chain 5 which is driven in the opposite direction. At the time of this movement, new cloth pieces 2 are stored in a stacked state in the cloth piece storage box 20 by an appropriate means.

Cloth piece storage box 20 containing a new piece of cloth 2
Is transported to the downstream side on the other endless transport chain 5 together with other adjacent storage boxes 20. The other side of the cloth piece storage box 20 at the downstream end is pushed by the other pusher 9, and is returned to the upstream end of the original endless transport chain 5 via the roller 7. In this way, the plurality of cloth piece storage boxes 20 are sequentially transported through the circulating transport path by the left and right endless transport chains 5 and the rollers 7. At the time of this conveyance, the guide roller 22 rotatably supported on the bottom plate 21 of each cloth piece storage box 20 abuts against the wall surfaces of the rectangular frame-shaped guide wall 3 and the intermediate guide wall 4 and is guided while rotating. The entire cloth piece storage box 20 is smoothly transported on the transport path without resistance.

17 and 18 are functional explanatory views of the cloth piece transfer device 40 installed between the cloth piece pickup device 30 and the sewing portion 60. The structure and function of the cloth piece transfer device 40 are as follows. It is not limited to the illustrated example.

First, referring to FIGS. 17 and 18, an outline of the cloth piece transfer device 40 employed in this embodiment will be described. The cloth piece transfer device 40 includes a pair of upper and lower transfer roller pairs 41 and 42, which are arranged at a predetermined interval in the front-rear direction of the cloth piece 2 and a pair of front and rear transfer rollers 41 and 4, respectively.
2, a pair of upper and lower reversing transfer roller pairs 43 arranged at an intermediate position, a first transfer path switching member 44 installed in the cloth piece transfer path of the reversing transfer roller pair 43, and front and rear in the cloth piece transfer direction. The second transfer path switching member 45 disposed at the cloth piece feeding portion of the front roller pair 41 of the transfer roller pairs 41 and 42 disposed in the above, and installed at least close to the rear transfer roller pair 42. The cloth piece front and back detector 56 is provided.

What must be noted in this type of cloth supply section is that the front and back of the cloth must be aligned and transferred to the next step. This is a problem that occurs in order to efficiently stack the cloth pieces. At present, the generally practiced lamination of cloth pieces is not one in which they are laminated one by one.For example, a long continuous cloth is folded in a zigzag shape and then cut into a predetermined cloth piece shape. is there. Therefore, the laminated cloth pieces are turned upside down one by one, and if the cloth pieces are transferred to the next process one by one in the same state, the cloth pieces inevitably alternately exposed on the front and back sides in the next process. Will be sent in sequence. In order to unify the front and back, it is necessary to provide a means for unifying the front and back during the transfer of the cloth piece. Note that the cloth pieces 2 are not always alternately fed depending on how to fold a long continuous cloth.

The upper and lower rollers of the pair of front and rear transfer rollers 41 and 42 are controlled and driven by electric motors 46 and 47 to positively rotate, and the rear rollers (FIGS. 17 and 18).
The left side of the transfer roller pair 42 always rotates so as to send the cloth piece 2 forward, and the front transfer roller pair 41 reverses and reversely feeds only when the cloth piece 2 is sent with the back side facing up. To operate. In addition, the reverse transfer roller pair 43
The upper reversing transfer roller 43a has a large diameter and is capable of forward and reverse rotation. When the cloth piece 2 is fed backward by the front transfer roller pair 41, the cloth piece 2 is reversed to reverse the cloth piece 2,
It operates to feed again to the front transfer roller pair 41 through the reverse transfer path. For reversing transfer of the cloth piece 2, the reversing transfer roller 4 is provided above the upper reversing transfer roller 43a.
Left and right pressing rollers 48 that press 3a from the left and right (FIGS. 17 and 18) are installed. The pressing roller 48 is rotatably supported by the swing ends of a pair of left and right swing levers 48a, and a tension spring 48b interposed between the pair of swing levers 48a elastically presses the upper reversing transfer roller 43a.

The first transfer path switching member 48 is composed of a fan-shaped cover that encloses the entire upper part of the upper reversing transfer roller 43a over approximately 240 °, and is centered on the axis of the upper reversing transfer roller 43a. The cloth is formed by a swinging mechanism (not shown) that is controlled to swing with a predetermined swinging width, and a straight transporting path connecting the transporting roller pair 41, 42 to the transporting path of the cloth piece 2 and the peripheral surface of the upper reversing transporting roller 43a. Piece 2
It is to be switched to the reverse transfer path. In order to avoid interference with the pressing roller 48 at the time of this switching, a part of the peripheral surface of the first transfer path switching member 44 is cut out.

On the other hand, the second transfer path switching member 45 is
Cloth piece 2 sent out from the pair of transfer rollers 41 in front
Is a switching member for switching between a straight path connecting the front and rear transfer roller pairs 41 and 42 and a retract path deviating downward from the straight path, and in the illustrated example, one curved end of the plate material curved in an arc shape. The portion is supported in a cantilever manner via an intermediate member 50 that projects from the motor shaft 49 in the radial direction. The motor shaft 49 is reciprocally rotated by a predetermined angle to switch between the position shown in FIG. 17 for guiding the cloth piece 2 to the straight path and the position shown in FIG. 18 for guiding the cloth piece 2 to the retracted path. .

The forward / reverse operation of the front transfer roller pair 41 and the upper reverse transfer roller 43a, and the switching operation of the first transfer path switching member 44 and the second transfer path switching member 45 are all detected on the front and back sides of the cloth piece 2. This is performed by a command from a control unit (not shown) based on the detection signal of the container 56.

In this embodiment, since the straight path for transferring the cloth piece 2 is formed, guide plates 52 and 53 are installed above and below the transfer path between the rollers, and the reversing path is formed. In order to form, in addition to the above-described first transfer path switching member 44, the pressing roller 48 arranged at the front end portion (right side in the figure) of the upper reversing transfer roller 43a is provided.
A guide member 54 having a substantially triangular cross section for forming a transfer path connected to the straight path from a position substantially in contact with a and a guide plate member 55 facing the cloth piece guide surface of the guide member 54 are provided. There is.

Now, when the cloth piece 2 is supplied from the cloth piece pickup device 30 to the cloth piece transfer device 40, the front and back detectors 56 detect the front and back of the supplied cloth piece 2,
If the cloth piece 2 is supplied with the surface thereof facing upward, the detection signal of the detector 56 is sent to a control unit (not shown), and the control unit sends the same to each operating section of the cloth piece transfer device 40. A command based on the detection signal is issued. At this time, the first and second transfer path switching members 44, 45 are at the positions shown in FIG. 16, and the front transfer roller pair 41 and the reverse transfer roller 43 rotate in the same direction as the rotation of the rear transfer roller pair 42, The piece 2 is transferred as it is along the straight road forward.

If the cloth piece 2 supplied from the cloth piece pick-up device 30 to the cloth piece transfer device 40 has the back side up, it is detected by the front / back detector 56, and if the cloth piece 2 is on the front side. Front and back detector 5 when supplied as above
A signal indicating that it is the back side is sent from 6 to the control unit, and the control unit issues a command based on the detection signal to each operating unit of the cloth piece transport device 40. By this command signal, the second transfer path switching member 45 is operated and switched to the position shown in FIG. 18, but the first transfer path switching member 44 is still in the state as shown in FIG. 17, where the forward transfer is performed first. Roller pair 4
1 and the reverse transfer roller 43 are rotated in the same direction as the rotation of the rear transfer roller pair 42 to transfer the cloth piece forward, and the cloth piece 2 is temporarily guided by the second transfer path switching member 45. It leads to the escape path below the pair 41. Before the rear end of the cloth piece 2 leaves the front transfer roller pair 41, the roller pair 41 is reversely rotated to reversely feed the cloth piece 2 and the first transfer path switching member 44 is switched. Figure 1
At the same time as the reversing guide position shown in FIG.
Reverse 3 In addition, the cloth piece 2 is the front transfer roller pair 41.
And the front end of the cloth piece is fed back by the front transfer roller pair 4
At the same time as leaving 1, the second transfer path switching member 45 is switched again and returns to the position of FIG.

As a result of the operation of each of these parts, the above-mentioned cloth piece 2 that has been fed back is transferred to the first transfer path switching member 44.
Is guided along the peripheral surface of the upper reversing transfer roller 43a and is transferred with the surface upwards, reaches a straight path in front of the front transfer roller pair 41 through the reversing path, and is directly transferred along the straight path. It is moved to 51 and sent out to the sewing section 60 of the next process.

Since the specific construction and operation of the sewn portion 60 following the cloth piece transfer device 40 are the same as those of the conventionally known ones, the description thereof will be omitted here. The above embodiment is an example in which the cloth piece pick-up device 30 of the present invention is applied to a sewing machine for continuously sewing a cloth piece used for jeans pants to a continuous slide fastener chain. Needless to say, the present invention is not limited to the sewing machine, and can be applied to all kinds of cloth piece processing machines for supplying small cloth pieces one by one at high speed and continuously.

[0058]

As is apparent from the above description, the cloth piece pick-up device of the present invention is particularly suitable for picking up the cloth pieces stacked one above the other one by one from the top, and moreover, the cloth pieces to be picked up. Is hooked on the needle of a hooking roller that rotates the front end while the rear end is being pressed, and is reliably hooked and raised one by one under a predetermined tension. Further, since the roller is positively fed forward while being nipped by the pressure contact roller, not only the cloth piece is not damaged, but also the mechanism is simple and it is possible to sufficiently speed up.

Further, in the present invention, even if the hooking roller fails to remove the cloth piece, the pressing means presses the rear end portion of the cloth piece and follows the cloth piece take-up operation to some extent. Since the shift and damage of the cloth piece can be minimized and the cloth piece can be picked up again, the device is not stopped.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an appearance of a cloth piece sewing machine including a cloth piece pickup device according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing a schematic configuration of the cloth piece pickup device.

FIG. 3 is an explanatory diagram of a specific configuration of the example of the cloth piece pickup device and a case where all the operating portions are in a standby position.

FIG. 4 is an operation explanatory diagram when picking up a cloth piece in the cloth piece pickup device.

FIG. 5 is an explanatory view of an operation when the cloth piece pickup device is raised by the cloth piece pickup device.

FIG. 6 is an operation explanatory diagram when the cloth piece pickup is transferred by the cloth piece pickup device.

FIG. 7 is a partially enlarged perspective view showing another typical schematic configuration example of the cloth piece pressing means which is a feature of the present invention.

FIG. 8 is an explanatory diagram of a specific configuration of the example of the cloth piece pickup device and a case where all the operating portions are in a standby position.

FIG. 9 is an explanatory diagram of an operation when the cloth piece pickup is started in the cloth piece pickup device.

FIG. 10 is an operation explanatory view when picking up a cloth piece in the cloth piece pickup device.

FIG. 11 is an operation explanatory view when the cloth piece pickup device is raised by the cloth piece pickup device.

FIG. 12 is an operation explanatory diagram when the cloth piece pickup is transferred by the cloth piece pickup device.

13 is a partially enlarged perspective view of the schematic configuration of the cloth piece conveying device shown in FIG. 1. FIG.

FIG. 14 is a plan view of a cloth piece storage box applied to the cloth piece conveying device.

15 is a view taken along the line AA in FIG.

FIG. 16 is a side view of the cloth piece storage box.

FIG. 17 is an explanatory diagram showing a cloth piece transfer state during linear transfer of the cloth piece transfer device.

FIG. 18 is an explanatory diagram showing a cloth piece transfer state during reverse transfer of the cloth piece transfer device.

[Explanation of symbols]

 1 Cloth Piece (Cloth Piece) Conveyor 2 Cloth Piece (Cloth Piece) 3 (Rectangular Frame) Guide Wall 4 Intermediate Guide Wall 5 Endless Transport Chain 6 Guide Table 7 Roller 8 Air Cylinder 9 Pusher 10, 13 Cylinder 11 Lift Plate 12 stopper 20 cloth piece (cloth piece) storage box 21 bottom plate 22,23 side wall material 22a long hole 24 rod 24a connecting material 25 cloth piece placing plate 25a (slit-like) long hole 26 pillar 27 L-shaped bracket 28a, 28b Vertical sliding guide bar 28c Fixing screw 29 Vertical lattice member 29a (L-shaped) frame member 29b Lattice material 30 Cloth piece pickup device 31 Pressing roller 31a Bracket 31b Air cylinder 31c Photoelectric detector 32 Hooking roller 32a Hooking needle 33 Feed Roller 33a Bracket 33b Electric motor 34 Pressure contact roller 34a 35 guide plate 36 cloth piece pressing means 37 pressing block portion 37a piercing needle 37b pressing block 37c cooperating block 37d connecting rod 37e spring 37f air cylinder 38 cloth piece removing block portion 38a cloth piece removing block 38b air cylinder 39 machine frame 39a bracket 40 cloth piece transfer device 41,42 transfer roller pair 43 reverse transfer roller pair 43a upper reverse transfer roller 44 first transfer path switching member 45 second transfer path switching member 46,47 electric motor 48a swing lever 48b tension spring 49 motor shaft 50 Intermediate member 51 Delivery table 52, 53 Guide plate 54 Guide member 56 Front and back detector 60 Sewing part

Claims (6)

[Claims] 1. A cloth piece pick-up device for picking up the laminated cloth pieces (2) one by one from the top, and pressing means (31, 31) for pressing one end of the cloth piece (2) from above.
36) and a hooking needle (32a) on a part of the peripheral surface, which comes into contact with and separates from the other end of the cloth piece (2), and the cloth piece (2) is pressed by the pressing means (3).
1, 36), a hook roller (32) that is driven to rotate so as to be fed in a direction away from (1, 36), and a feed roller that rotates in synchronization with the hook roller (32).
(33) and a pressure contact roller (34) which comes into contact with and separates from the cloth piece feed surface of the feed roller (33) and rotates in cooperation with the feed roller (33). Single pickup device. 2. The cloth piece pickup device according to claim 1, wherein the pressing means (31) is a pressing roller. 3. The pressing means (36) has a hooking needle (37a) at the bottom thereof, a pressing block (37) elastically movable in the pulling direction of the cloth piece (2), and the hooking needle (37). (37a)
The cloth piece pick-up device according to claim 1, further comprising a cloth piece removing block (38) for removing the cloth piece (2) lifted by the cloth piece removing block (38). 4. The pressure contact roller (3) having one end adjacent to the upper surface of the pressure contact roller (34) and extending horizontally to the cloth piece delivery side.
4. The cloth piece pick-up device according to claim 1, further comprising a guide plate (35) that cooperates with 4). 5. A method of picking up the cloth pieces in a stacked state one by one from the upper part by using the cloth piece pick-up device according to claim 1, wherein the surface is pressed by pressing means (31, 36). The hook roller (32) that is driven to rotate is brought close to the other end surface of the cloth piece (2), and the cloth piece (2) in the uppermost layer is hooked on the hooking needle (32a) of the hooking roller (32). At the same time, it rises and the cloth piece (2)
The other end surface of the cloth is brought into contact with the feed surface of the feed roller (33) which is rotating, and the press roller (34) is moved at the same time when the other end of the cloth piece comes into contact with the feed surface of the feed roller (33). Then, the other end of the cloth piece (2) is brought into pressure contact with the feed roller (33), and the cloth pieces (2) are transferred one by one to the next step by repeating the respective operations. Single pickup method. 6. The method according to claim 5, wherein at the pickup position of the cloth piece (2), the laminated cloth pieces (2) are sequentially raised by a thickness corresponding to the pick-up operation. The method for picking up the cloth piece described.