JPH06178883A - Cloth transfer device - Google Patents

Abstract

PURPOSE:To provide a cloth transfer device which can respond fully to a speed-up of operation, utilize space efficiently by setting a transfer path for cloth reasonably, and keep a pick-up position of the cloth to be constant. CONSTITUTION:In a cloth housing box 20, a transfer path is formed in a shape of a rectagular circulation passage, and is provided with automatic transfer means 5 and 7 to transfer the housing box 20. A cloth transfer part in the transfer path is provided with an elevation plate 11 to do motion control. In a bottom part 21 of the housing box 20, an opening to allow the elevation plate 11 to pass through is formed. A cloth placing plate 25 is placed on the bottom part 21. A distance between side walls of the housing box 20 is adjustable, and a stopper 12 for the housing box 20 is provided in contact with the elevation plate 11 in its downstream.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cloth slide sewing machine or the like for continuously attaching cloth pieces constituting a placket of a front trousers such as jeans to a continuous slide fastener chain. More particularly, the present invention relates to a conveying device that collectively conveys laminated cloth pieces suitable for high-speed supply to a cloth piece supply unit.

[0002]

2. Description of the Related Art For example, in the work of continuously attaching cloth pieces to a continuous slide fastener chain, it is necessary to supply the cloth pieces at a rate of 1 to 2 seconds with the recent increase in speed of sewing machines. In order to correspondingly and continuously work for a long time, a large amount of cloth must be stored in the supply section at all times. However, 40-50 per minute
As many pieces of cloth are consumed, it is extremely difficult to store a sufficient amount of pieces of cloth in one place for the operating time.

Therefore, conventionally, for example, dozens of cloth pieces in a laminated state are set on a plurality of cloth piece mounting portions arranged on the same circumference of the rotating disk, and the rotating disk is intermittently controlled. There is one in which one placing portion is rotated to move to a cloth piece supply position, and in the placing portion, cloth pieces are automatically taken out one by one from the top and continuously supplied to the sewing portion. Then, when the cloth pieces on the mounting portion are exhausted, the rotating disk is rotated to move the mounting portion to the cloth piece supplying position for the next time. While the rotating disk is being rotated in this way, a new piece of cloth is set in a stacked state on the placing portion to which the piece of cloth has been supplied.

Further, in this type of cloth feeding apparatus,
As described above, the cloth pieces stacked at the cloth piece supply position are picked up one by one and picked up and supplied to the sewing portion which is the next step, but at this time, even one piece cannot be picked up, Alternatively, if two or more sheets are picked up at the same time, a loss portion is generated by itself, leading to an increase in cost. Therefore, some mechanisms have been proposed so far for surely picking up the cloth pieces one by one.

For example, when picking up a cloth piece from the rotating disk, the cloth pieces are hooked one by one by the claws provided on a plurality of pick-up parts mounted on the arm of the robot and transferred to the sewing part. I am trying to do it. A mechanism similar to this pickup mechanism is disclosed in, for example, Japanese Patent Laid-Open No. 1-221196. In addition, for example, Japanese Patent Publication No. Sho 63-28635 discloses a method in which a cloth pick-up mechanism is provided on the front surface of the cloth pieces laminated in the lateral direction so that the cloth pieces are picked up one by one from the front surface. In this example, the plate member is oscillated between a roll member rotatably attached to the tip end of a plate member that swings about one long side as a swing center and a claw that projects at a right angle from the plate member inside the plate member. Pick up by picking only the piece of cloth on the front. Further, for example, according to U.S. Pat. No. 3,685,471, while operating the baffle plates in synchronism, one piece of cloth is placed on the front side of the cloth piece which is also laminated in the lateral direction. A pick-up mechanism is disclosed in which a claw that horizontally reciprocates along the front surface transfers the hook to the side. Furthermore, what should be noted in this kind of cloth supply section,
There is a point that the front and back of the cloth piece 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.

The above Japanese Patent Publication No. 63-28635 and U.S. Pat. No. 3,685,471 disclose means for detecting the front and back of a cloth piece during transfer and unifying the front and back of the cloth piece. Has been done. In particular, the U.S. Pat. No. 3,685,471 specifically discloses the front and back reversing means, and according to the description, a pair of the endless pieces of the cloth pieces picked up as described above are arranged side by side. When a piece of cloth that needs to be turned upside down is detected while being fed between the belts, the front ends of the pair of endless belts are rotated by 180 ° to twist the belts and the front and back of the piece of cloth at the destination. Are arranged.

[0007]

By the way, when the cloth pieces are arranged on the same circumference of the disk as the cloth piece supply device as described above, the distance between the adjacent cloth pieces gradually increases as the distance from the center of the rotating disk increases. In order to increase the size and to reduce the frequency of cloth replenishment due to speeding up, trying to arrange many cloth pieces on the same circumference of the rotating disk inevitably increases the diameter of the disk. However, the space cannot be effectively used.

Further, according to the stacking condition of the cloth pieces in the vertical and horizontal directions, regardless of whether the cloth pieces are picked up from the upper surface or the side surface, the cloth piece feeding device of this kind surely picks up the cloth pieces. In any case, it is desirable that the cloth piece to be picked up next time always exists at a predetermined pick-up position.

The object of the present invention is to sufficiently cope with the speeding up of the operation, and to reasonably set the movement path of the cloth pieces in the laminated state to effectively utilize the space and to pick up the cloth. It is an object of the present invention to provide a cloth piece supply device that does not change the pickup position of the piece.

[0010]

In order to achieve the above object, the present invention is installed in a cloth piece transfer section for picking up cloth pieces stored in a storage box in a stacked state one by one from the upper surface and transferring them to the next step. And a cloth piece transporting device having a transport path for sequentially transporting the storage box to the transfer section, wherein the transport path of the storage box is a rectangular frame-shaped circulation path, and the transport path includes the storage box of the storage box. A cloth piece conveying device is characterized in that it is provided with an automatic conveying means, and that the cloth piece conveying section in the conveying path is provided with an elevating plate for controlling operation.

More preferably, a positioning means for the storage box is provided adjacent to the downstream side of the lift plate, and an opening for allowing passage of the lift plate is provided at the bottom of the storage box. Is formed, the cloth piece mounting plate is mounted on the bottom portion, and the side wall spacing of the storage box can be adjusted.

[0012]

First, the required number of cloth storage boxes for mounting on the cloth transfer device are prepared. In this preparation, the distance between the opposite side walls of the cloth piece storage box is adjusted according to the size of the cloth piece. The required number of cloth pieces are stacked and stored in the cloth piece storage box thus prepared.

A plurality of cloth piece storage boxes in which cloth pieces are stacked are stored side by side on a rectangular frame-shaped conveying path of the cloth piece conveying device. When the cloth piece conveying device is started here, the cloth piece pickup device starts to operate simultaneously, and the cloth pieces stored in a stacked state in the cloth piece storage box located below the pickup device are picked up one by one from the top. Then, it is supplied to the next step, for example, a cloth piece transfer device. At this time, in response to a signal from the control section, the lifting plate is raised while corresponding to the pick-up speed of the cloth piece. Here, when there is no cloth in the cloth storage box, the storage box is transported to the next downstream side.

When the subsequent cloth piece storage box is conveyed to the pickup position, the positioning means operates to position the storage box at the same position and stop it. At this time, the empty cloth storage box is converted into a conveying direction at a right angle and is moved to an opposite conveying path for conveying in the opposite direction. During this movement, new cloth pieces are stored in a stacked state in the cloth piece storage box by appropriate means.

The cloth piece storage box in which a new cloth piece is stored is transported to the downstream side of the transport path together with the adjacent storage box. The cloth piece storage box at the end on the downstream side has its conveyance path converted at a right angle,
It will be returned to the upstream end of the original transport path. In this way, a plurality of storage boxes are transported while sequentially circulating through the transport path on the rectangular frame.

[0016]

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.

FIG. 1 shows that the cloth piece pick-up device 30 picks up the cloth pieces 2 one by one from the cloth piece conveying device 1 of the present invention, and the cloth piece transfer device 40 aligns the front and back of the cloth piece 2 continuously to the sewing portion 60. The schematic structure of the sewing machine for supplying is shown. FIG. 2 is a partially enlarged perspective view showing a part of the cloth piece conveying device 1 according to the present invention by cutting out.

As shown in FIGS. 1 and 2, the cloth piece conveying device 1 of the present invention is housed inside a guide wall 3 which is in the shape of a rectangular frame as a whole except for a part of the driving device. In the present embodiment, the rectangular frame-shaped guide wall 3 is divided into the left and right by the central intermediate guide wall 4. The intermediate guide wall 4
Both end portions of the guide wall 3 are set to be shorter than the long side portion of the rectangular frame-shaped guide wall 3 by a predetermined length. Therefore, a predetermined distance is provided between both ends of the intermediate guide wall 4 and the short side portion of the guide wall 3. Are separated by the distance. 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 construction, the cloth piece storage box 20 conveyed to the end by the endless conveyance 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 conveyance 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 present invention, as shown in FIG. 2, in addition to the above-mentioned structure, an elevating plate 11 controlled by a cylinder 10 is further provided. According to the embodiment shown in FIGS. 1 and 2, the installation position of the lifting plate 11 is the installation part of the cloth piece pick-up 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 in 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.

3 to 5 show the construction of the cloth piece storage box 20, FIG. 3 is a plan view of the same, FIG. 4 is a view taken along the line AA of FIG.
FIG. 5 is a side view of the cloth piece storage box 20. As is clear from these figures and FIG. 2, in the cloth piece storage box 20 in this embodiment, the central portion of the bottom plate 21 is opened in a rectangular shape,
The size of the opening is such that the elevating plate 14 can pass through. Further, guide rollers 21a are supported at the four corners of the bottom plate 21 such that part of the roller surface is projected from the bottom plate 21 and each freely rotates around a vertical axis. Furthermore, 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. 3) of the bottom plate 21, and one of these 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 along one end of the bottom plate 21 in the longitudinal direction along the opening edge, and the upper end of each bar member 24 is a connecting member 24a.
Are linked by

On the upper surface of the bottom plate 21, a cloth piece mounting plate 25 having a shape to be fitted between a 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. 3, and a plurality of slit-shaped long holes 25a are formed in 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 a side opposite to the installation position of the bar member 24 at the same edge. 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 of the present invention having the above-described structure, first, the number of cloth pieces required to be placed on the cloth piece conveying device 1 (11 pieces in the example shown in FIG. 1) are stored. Prepare the box 20. In this preparation, the long side wall material 22
While adjusting the movement according to the width of the cloth piece 2 and fixing it,
The vertical grid member 29 is also slid along the vertical sliding guide bars 28a and 28b according to the length of the cloth piece 2, 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. During or after this movement, a new cloth piece 2 is stored in a stacked state in the cloth piece storage box 20 by an appropriate means.

A cloth piece storage box 20 containing a new cloth piece 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 21a rotatably supported on the bottom plate 21 of each cloth piece storage box 20 contacts the respective 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.

FIGS. 6 to 8 show an outline of an example of a cloth piece pickup mechanism installed in the cloth piece transfer section of the cloth piece conveying device, but the present invention is not limited to the same. For example, it is possible to employ the pickup mechanism disclosed in the above-mentioned Japanese Patent Laid-Open No. 1-221196.

Cloth piece pickup device 30 according to the illustrated example
Is a pressing roller 31 that presses the rear end (left side in the figure) of the cloth piece 2 stored in a stacked state in the storage box 20 stopped at the cloth piece transfer portion from the surface, and the front end portion of the cloth piece 2 ( Hook roller 32 that reciprocates between the upper surface of the right side of the figure and the surface of the other end thereof, and a feed roller provided adjacent to the cloth piece feeding side (right side of the figure) at the upper position of the hook roller 32. 33
And a pressure contact roller 34 that reciprocates between the feed roller 33 and a diagonally lower front side of the feed roller 33 on the piece delivery side.
And a guide plate 35 that extends horizontally forward with its end portion adjacent to the upper surface of the pressure contact roller 34 and that operates together with the pressure contact roller 34.

The pressing roller 31 stays at the pressing position until the picking up of the cloth pieces 2 stacked in the same storage box 20 is completed, and when the picking up of all the cloth pieces 2 is completed, the standby shown by the solid line in FIG. It rises to a position and waits at that position until the subsequent storage box 20 is transported to the transfer section. When the succeeding storage box 20 is conveyed to the transfer section and stopped, the pressing roller 31 descends and presses the surface of the cloth piece stored in the storage box 20.

From the surface of the hooking roller 32, a plurality of hooking needles 32 are arranged at a predetermined interval in parallel with the rotation axis.
a protrudes, and the roller 32 is driven and rotated counterclockwise in FIGS. And the same hook roller 3
Whenever the cloth pieces 2 are picked up by the hooking needle 32a one by one, the cloth 2 reciprocates between the upper and lower positions shown by solid lines and imaginary lines in FIG. The protrusion amount of the hooking needle 32a is set to be slightly shorter than the thickness of one piece of cloth 2.

The feed roller 33 is constantly rotating,
One piece of cloth 2 is hooked by the hooking needle 32a and rises together with the hooking roller 32, and its tip comes into contact with the lower surface of the feed roller 33, and at the same time, the pressing roller 3a.
4 moves diagonally upward toward the feed roller 33, and holds the tip of the cloth piece 2 between the feed roller 33 and the pressure contact roller 34. At this time as well, since the feed roller 33 is rotating, the cloth piece 2 is guided by the upper surface of the guide plate 35 and is fed forward. Thus, when one piece of cloth 2 is fed forward, the pressing roller 31 moves down to the position shown by the phantom line in FIG. 7 and presses the surface of the cloth piece 2 to be picked up next time. Subsequently, the above-described operation is repeated, and the cloth pieces 2 stacked inside the storage box 20 are sequentially picked up one by one from the upper layer and sent forward.

9 and 10 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 shown in FIG. It is not limited to the illustrated example.

First, referring to FIGS. 9 and 10, an outline of the cloth piece transfer device 40 used 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 and rear of the cloth piece 2 in the transfer direction, and an intermediate portion between the front and rear transfer roller pairs 41 and 42. A pair of upper and lower reversing transfer rollers 43 arranged at a position
And a first transfer path switching member 44 installed in the cloth piece transfer path of the reverse transfer roller pair 43, and a front roller pair of the transfer roller pairs 41 and 42 arranged before and after in the cloth piece transfer direction. The second transfer path switching member 45 is provided at the cloth piece feeding portion 41, and the cloth piece front / back detector 56 is installed at least in the vicinity of the rear transfer roller pair 42.

The upper and lower rollers of the front and rear transfer roller pairs 41 and 42 are controlled and driven by electric motors 46 and 47 to positively rotate, and the rear transfer roller pair 42 (the left side of FIGS. 9 and 10) is The cloth piece 2 is always rotated so as to be fed forward, and the front transfer roller pair 41 operates so as to reverse and reversely feed only when the cloth piece 2 is fed with the back surface facing upward. The upper reversing transfer roller 43a of the reversing transfer roller pair 43 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 is reversed. While reversing 2, the roller 2 is operated to be fed again to the front transfer roller pair 41 through the reverse transfer path. In order to reversely transfer the cloth piece 2, the reverse transfer roller 43a is provided above the upper reverse transfer roller 43a.
Left and right pressing rollers 48 that press a from the left and right (FIGS. 9 and 10) 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 44 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 reverse 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. Then, by reciprocally rotating the motor shaft 49 by a predetermined angle, it is switched between the position shown in FIG. 9 for guiding the cloth piece 2 to the straight path and the position shown in FIG. 10 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, a light detecting means is used as the front / back detector 56.

In this embodiment, in order to form a straight path for transferring the cloth piece 2, 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 pick-up device 30 to the cloth piece transfer device 40, the front and back of the supplied cloth piece 2 are detected by the front and back detector 56,
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 and 45 are at the positions shown in FIG. 9, 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, and the cloth 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 and back detector 56, and if the cloth piece 2 faces the back 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 activated and switched to the position shown in FIG. 10, but the first transfer path switching member 44 is not yet activated,
Here, first, the front transfer roller pair 41 and the reverse transfer roller 4
3 is rotated in the same direction as the rotation of the rear transfer roller pair 42 to transfer the cloth piece forward, and is guided by the second transfer path switching member 45 to temporarily move the cloth piece 2 below the front transfer roller pair 41. Guide to the evacuation route. 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. At the same time as the reverse guide position shown in FIG. 11, the reverse transfer roller 43 is reversed. Further, the cloth piece 2 is fed back by the front transfer roller pair 41, and the front end of the cloth piece leaves the front transfer roller pair 41, and at the same time, the second transfer path switching member 45 is switched again to move to the position shown in FIG. Return to.

As a result of the operation of each of these parts, the cloth piece 2 which 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 conveying device 1 of the present invention is applied to a sewing machine for continuously sewing pieces of cloth used for jeans pants to a continuous slide fastener chain. Of course, the present invention is not limited thereto, and can be applied to all kinds of cloth piece processing machines that feed small cloth pieces one by one at high speed and continuously.

[0044]

As is apparent from the above description, since the cloth piece conveying device of the present invention is composed of the rectangular frame-shaped circulation conveying path, a plurality of cloth piece accommodating boxes can be utilized by making the most of the space. Can be mounted efficiently, and at the cloth piece pick-up position of the circulating conveyance path, there is provided an elevating plate that rises according to the pick-up speed of the cloth piece. Gradually lift the uppermost piece of cloth that is picked up one by one from the top so that it is always positioned at a predetermined position, so that a reliable pickup function is maintained and the movement of the pickup device itself is reduced. Therefore, the configuration can be simplified accordingly.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an external appearance of a cloth piece sewing machine including a cloth piece conveying device of the present invention.

FIG. 2 is an enlarged perspective view showing a part of the cloth piece conveying device.

FIG. 3 is a plan view of a cloth piece storage box applied to the same cloth piece conveying device.

FIG. 4 is a view taken along the line AA in FIG. 3;

FIG. 5 is a side view of the cloth piece storage box.

FIG. 6 is a perspective view schematically showing an example of a cloth piece pickup mechanism of the cloth piece sewing machine.

FIG. 7 is an operation explanatory view of the cloth piece pickup mechanism.

FIG. 8 is an operation explanatory view of the same cloth piece pickup mechanism.

FIG. 9 is an explanatory view showing a cloth piece transfer state at the time of linear transfer of a cloth piece transfer device installed subsequent to the cloth piece pickup mechanism.

FIG. 10 is an explanatory view showing a cloth piece transfer state at the time of reverse transfer of the cloth piece transfer device.

FIG. 11 is an explanatory diagram showing a cloth piece transfer state during the reverse transfer.

[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 21a Guide Roller 22,23 Side Wall Material 22a Long Hole 24 Bar Material 24a Connecting Material 25 Cloth Piece Placement Plate 25a (Slit-like) Long Hole 26 Strut 27 L-type 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 32 Hooking roller 32a Hooking needle 33 Feeding roller 34 Pressing roller 35 Guide plate 40 cloth piece transfer device 41, 42 transfer roller pair 43 reversal transfer roller pair 43a Part reversing transfer roller 44 First transfer path switching member 45 Second transfer path switching member 46, 47 Electric motor 48a Swing lever 48b Extension spring 49 Motor shaft 50 Intermediate member 51 Delivery table 52, 53 Guide plate 54 Guide member 56 Front and back detector 60 sewing section

Claims (4)

[Claims] 1. A cloth piece storage box (20) is installed in a cloth piece transfer section for picking up the cloth pieces (2) stored in a stacked state one by one from the upper surface and transferring them to the next step. Cloth piece conveying device (1) having a conveying path for sequentially conveying 20) to the transfer section
The transfer path of the storage box (20) is a rectangular frame-shaped circulation path, and automatic transfer means for the storage box (20) is provided in the transfer path.
A cloth piece conveying device comprising: (5, 7), and an elevating plate (11) that performs a control operation at the cloth piece transfer section in the conveyance path. 2. The cloth piece conveying apparatus according to claim 1, further comprising a positioning means for positioning the storage box (20) adjacent to a downstream side of the elevating plate (11). 3. The bottom (21) of the storage box (20) is formed with an opening for allowing passage of the elevating plate (11).
2. The cloth piece conveying apparatus according to claim 1, wherein the cloth piece mounting plate (25) is mounted on 1). 4. The cloth piece conveying apparatus according to claim 1, wherein a side wall interval of the storage box (20) can be adjusted.