JPH03264087A - Automatic fabric loading device for sewing device - Google Patents

Abstract

PURPOSE:To eliminate a bifolding process for the anterior part of a body section or the like, which is a pre-sewing process carried by a worker by disposing a folding member between a fabric set position on a fabric loading plate and a delivery position for a sewing device so that the folding member is moved downward before the fabric loading plate is moved to the delivery position. CONSTITUTION:A folding member 25 is supported, movably in the vertical direction, by a pneumatic cylinder 26 secured to a machine frame 4, between a fabric loading plate 8 disposed at a set position P1 and a working table 30. The folding member 25 is positioned above the fabric loading plate 8 at the fabric set position P1 during setting a body section. A fold part V of the body section is projected below the folding member 25, and after the body part W set on the fabric loading plate 8 being held by a body part clamp 22, when the holding member 25 is moved to a position below the fabric loading plate 8 under the operation of the pneumatic cylinder 26, the hold part V is folded downward. At this time, the upper surface of the folding member 25 is set at a position flush with the upper surface of the working table 30.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a sewing device for supplying fabric to a sewing device for sequentially attaching buttons and buttonholes to a plurality of locations on a processed fabric. This invention relates to an automatic fabric loading device.

[Prior Art] Conventionally, as a fabric automatic loading device for this type of sewing device,
For example, as described in Japanese Patent Publication No. 59-36546, there is a presetting section for setting the body in advance, and a loading section for supplying the set body to a sewing device that continuously attaches buttons and holes. A device has been proposed that includes a section.

[Problems to be Solved by the Invention] However, in the conventional automatic fabric loading device configured as described above, the body set in the preset section is supplied to the sewing device for sewing buttons and buttonholes. In addition, it was necessary to bend the front part of the body part in two before setting the body part in the preset section. Normally, the bending process of the front part of the body is performed manually one by one by an operator using an iron or the like, which takes a long time and is inefficient.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to sew buttons and buttonholes on the front part of a body that has been folded in half. To provide a novel automatic fabric loading device for a sewing device that can omit the folding process of the front part of a body body, etc., which is performed by an operator before attaching and sewing buttonholes.

[Means for Solving the Problems] In order to achieve this object, the present invention includes a work table;
It has a cycle sewing machine which is placed on the work table and performs button stitching or buttonhole stitching on the cloth, and a clamp means capable of holding and releasing the cloth, and by moving the clamp means along the work table, and a transfer means for sequentially transferring the plurality of sewing locations to the needle drop point of the cycle sewing machine, and sewing by the cycle sewing machine and feeding the cloth by the transfer device are alternately repeated multiple times to attach buttons or buttonholes to the sewing locations. In a sewing device that performs overlock stitching, a fabric mounting device is provided movably between a set position remote from the transfer means and a delivery position close to the transfer means and for transferring the fabric to the clamping means. a first driving means for moving the plate and the fabric placing plate; and a first driving means for moving the fabric placing plate; A folding member provided movably between a position below the placing plate, a second driving means for moving the bending member, and a fabric placing plate disposed at the set position,
After the bending member is moved from the upper position to the lower position, the bone is moved to the passing position.
and control means for controlling the second driving means to bend the protruding portion of the fabric placed on the fabric placement plate toward the lower surface of the fabric placement plate.

[Operation] In the automatic fabric loading device of the sewing machine of the present invention having the above-described configuration, the fabric placement plate is at the set position of the body and the folding member is moved to a position above the fabric placement plate. In this position, the body is placed on the fabric placement plate with the folded portion of the body protruding below the folding member.

This protruding portion of the body is bent downward when the folding member is moved to a position below the fabric placement plate by the second driving means for moving the folding member.

When the fabric mounting plate is moved by the first driving means to a delivery position for delivering the body to a clamping means of a sewing device that performs button sewing or buttonholing, the fabric mounting plate is bent downward by the bending member. The protruding portion of the body that has been folded is bent again toward the lower surface of the fabric placement plate.

Therefore, the protruding portion of the body of the rib of the fabric placement plate is folded in at the transfer position.

[Example] Hereinafter, an example in which the present invention is embodied in a continuous buttonhole sewing machine will be described with reference to the drawings.

In FIG. 1, a pair of slide rails 6 are installed in front of a machine frame 4 to which a buttonhole sewing machine 31 is fixed, parallel to the X direction in FIG.
Support members 7 fixed to both ends of the fabric placement plate 8 are respectively fitted, and the fabric placement plate 8 is located at a fabric setting position P1 (see FIG. 2) and a delivery position P2 (second (see figure).

The feed lever ll is the air cylinder 1 attached to the machine frame 4.
4 rotatably supported by a bearing 10 fixed to the machine frame 4 as a fulcrum, and a long groove portion 12 is formed at each end thereof.

A roller 13 is attached to the support member 7, and the roller 13
is inserted into the long groove portion 12 of the feed lever 11.

Above the fabric placement plate 8, a body clamp 22 is supported by the support member 7 so as to be movable up and down. A clamp shaft 17 is installed between the pair of support members 7, a clamp holder 18 is fixed to the clamp shaft 17, and a cylinder mounting plate 19 is attached to the clamp holder 18. An air cylinder 20 is fixed to this cylinder mounting plate 19, and the body clamp 22 is fixed to its piston rod 21. When the body clamp 22 is moved upward by the air cylinder 20, a space is defined between the body clamp 22 and the fabric placement plate 8 in which the body W can be inserted.

The body W inserted into the interval is held by the clamp portion 22a of the body clamp 22, which has been moved downward by the action of the air cylinder 20, and the fabric mounting plate 8.

Next, the sewing device will be explained based on FIGS. 1 and 4.

A working table 30 long in the left-right direction is disposed at the upper end of the rear half of the machine frame 4, and a buttonhole sewing machine 31 is provided at the rear side of the working table 3°. A needle bar 33 having a sewing needle 32 attached to its lower end is supported by the sewing machine 31 so as to be movable up and down, and the needle drop position of the sewing needle 32 is located near the rear end of the work table 3o.

A clamp support plate 34 that is long by a predetermined distance in the left-right direction is attached to the rear end of the work table 30 via a backward moving mechanism (path shown), and each of the clamp support plates 34 is equipped with three twin-rod type air cylinders 35. A receiving reframp 37 is attached to the piston rod 36 of each air cylinder 35, respectively. Therefore, when each air cylinder 35 is driven forward or backward when the fabric placement plate 8 on which the fabric W is placed moves to the delivery position P2, the receiving clamp 3
7 is driven through a notch 8a formed at the tip of the fabric placement plate 8 between a clamp position where the fabric W is pressed against the work table 30 and a release position where the fabric W is released. During sewing, the clamp support plate 34 is retracted rearward from the work table 30 by a backward movement mechanism to allow movement of a rear end clamp mechanism 48, which will be described later, in the transfer direction F.

On the other hand, as shown in FIG. 4, immediately to the right of the needle bar 33, there is a
Fabric W transferred from fabric placement plate 8 onto work table 30
A front end clamping mechanism 38 is provided for clamping the front end of the machine.The front end clamping mechanism 38 comes into contact with a guide plate 39 fixed to the machine frame 4 below the work table 30 and extending in the left-right direction from the front. A clamp support plate 40 extending in the vertical direction is movably supported by the guide plate 39 in the left-right direction by a sliding member 42 that contacts the guide plate 39 from behind. The upper part of this clamp support plate 40 is bent forward just above the work table 30 to form a cloth holding part 41, and the air cylinder 43 is attached to the cloth holding part 41 via a cylinder mounting base 44. A front end clamp 46 is rotatably attached to the piston rod 45 of the air cylinder 43 to a cylinder mounting base 44 . Therefore, as the air cylinder 43 is driven forward and backward, the front end clamp 46 is rotated between a clamp position where it holds the front end portion of the placket of the fabric W on the fabric holder 41 and a release position where it releases it.

Furthermore, a rear end clamp mechanism 48 is provided near the left end of the work table 3o to clamp the rear end of the placket of the fabric W transferred onto the work table 30. To explain, the guide plate 39
A clamp support plate 49 that abuts from the front and extends vertically.
is supported by the guide plate 39 so as to be movable in the left-right direction by a sliding member 51 that contacts the guide plate 39 from the rear. The upper part of this clamp support plate 49 is bent forward just above the work table 30 to form a cloth holding part 50, and a solenoid 53 is attached to a mounting plate 52 whose lower end is fixed to this cloth holding part 50. ing. Rear end clamp 5
4 is connected to the drive shaft of this solenoid 53 and is rotatably supported by a pin 55 fixed to the mounting plate 52, and furthermore, is always raised upward (counterclockwise in FIG. 4) by an arched spring 56. It is biased in the direction of rotation. Therefore,
The rear end clamp 54 is moved to a clamp position (shown by a solid line in FIG. 4) in which the rear end of the placket of the fabric W on the fabric holding section 50 is held by energization of the solenoid 53, and to release the fabric W by de-energization of the solenoid 53. and a release position (indicated by a two-dot chain line in FIG. 4).

Next, the front end clamp mechanism 38 and the rear end clamp mechanism 48
The transfer mechanism 57 that transfers each of the objects in the transfer direction F and then in the opposite direction to the transfer direction will be explained based on FIG.

A rack 58 is disposed directly below the guide plate 39 in parallel with the guide plate 39, and this rack 58 is supported so as to be movable in the left-right direction on a rack support plate (path shown) that is attached to the machine frame 4 and extends in the left-right direction. The clamp support plate 40 is fixed to the right end of the rack 58. On the other hand, the clamp support plate 49 of the rear end clamp machine 1j48 is connected to the rack 58 via a rear end clamp position adjustment mechanism 59.

To explain this rear end clamp position adjustment mechanism 59, a stepping motor 61 is attached to a gear case 60 fixed to the clamp support plate 49, a worm gear 62 is fixed to the drive shaft of this motor 61, and a worm gear meshing with the worm gear 62 is attached to a stepping motor 61. A pinion 65 that meshes with the rack 58 is attached to the shaft 64 to which the wheel 63 is attached.

That is, the rear end clamp mechanism 48 can be adjusted in the left and right direction M with respect to the rack 58 by driving the motor 61. A pinion 67 that engages with the rack 58 is attached to a shaft 66 rotatably supported by the work table 30 and the machine frame 4, respectively.
A worm gear 69 that meshes with the worm wheel 68 is fixed to a drive shaft of a transfer motor 70 attached to the machine frame 4. Therefore, by driving the transfer motor 70, the rack 58 is moved through the worm gear 69, the worm wheel 68, and the pinion 67.
The front end clamp mechanism 38 moves in the left and right direction.
moves in the left-right direction in synchronization with the rack 58, and the rear end clamp mechanism 48 also moves in the left-right direction in synchronization with the rack 58 via the rear end clamp position adjustment mechanism 59. Here, both clamp mechanisms 38 and 48 are constituted by a transfer means including a transfer motor 70 and the like.

The transfer means is the same as that in Japanese Patent Application No. 1-272463 (filed on October 19, 1999) by the applicant of the present application, and further detailed explanation will be omitted.

Next, the bending mechanism will be explained.

As shown in FIGS. 2 and 5, a bending member 25 is connected to an air cylinder 2 fixed to the machine frame 4 between the work table 30 and the fabric mounting plate 8 disposed at the set position P1.
6 so as to be movable up and down, and when the body is set, the bending member 25 is located above the fabric placement plate 8 at the fabric setting position P1. The body W placed on the fabric mounting plate 8 with the folded portion V of the body protruding below the folding member 25 is held by the body clamp 22, and then the folding member 25 is moved by the action of the air cylinder 26. When moving below the fabric placement plate 8, the bent portion V is bent downward. At this time, the upper surface of the bending member 25 is located in the same plane as the upper surface of the work table 30.

Next, the overall configuration of the control system will be explained based on the block diagram of FIG. 6.

A switch 80 that is operated when the setting of the fabric W on the fabric mounting plate 8 is completed is connected to the input/output interface 100 of the control device CU, and is connected to the input/output interface 100 of the control unit CU, and
, 35, 43, solenoid 53, sewing machine 31, and motors 70, 61 are connected to input/output interface 100 via drive circuits 89-97, respectively.

The control device CU includes a CPU 102, an input/output interface 100 connected to the CPU 102 via a bus 101 such as a data bus, a ROMI 03, and a RAM 110.

The ROM 103 stores in advance a control program for automatic fabric loading, buttonhole sewing data for buttonholing, a sewing machine control program, and the like.

Next, its effect will be explained.

The fabric placement plate 8 is placed at the fabric setting position P1, the body clamp 22 and the bending member 25 are placed above the fabric placement plate 8, and the front end clamp 38° and the rear end clamp 4B are placed in the first position with the fabric released. When placed in the position shown in the figure and the receiving reframp 37 is in the released state, the operator places the fabric W on the fabric placement plate 8 with its front end protruding beyond the placement plate 8 and folding it. When positioned below the bending member 25 and presses the switch 80, the control unit CU drives and controls each air cylinder 14, 20, 26, 35° 43, solenoid 53, sewing machine 31, and motor 7061 as follows. .

That is, first, the body clamp 22 is moved down and the fabric (body) is moved down.
W is held on the fabric mounting plate 8, and then the air cylinder 2
6 is activated, and the folding member 25 is moved below the fabric placement plate 8. At this time, the front end V of the body W that protrudes beyond the fabric placement plate 8 is bent downward along the front edge of the placement plate 8.

Thereafter, when the air cylinder 14 is activated and the fabric placing plate 8 and the body clamp 22 move the body W from the setting position P1 to the delivery position P2, the front end V of the body W which has already been bent downward is , the receiving clamp 37. is folded into the lower surface side of the fabric placement plate 8 and remains in that state. Front end clamp 38. It is transferred below the rear end clamp 48.

Next, the body W that has reached the fabric delivery position P2 is moved onto the work table 30 by lowering the receiving refram 37 and the front end clamping mechanism 38 and rear end clamping mechanism 48 of the sewing device 1.
fixed on top.

Thereafter, the body clamp 22 moves upward to release the body W, and then returns to the cloth setting position by the action of the air cylinder 14. Thereafter, the receiving refram 37 moves upward, and the body W is held on the upper surface of the work table 30 by the front end clamp mechanism 38 and the rear end clamp mechanism 48.

After this, buttonhole stitching is performed using the sewing machine 31, and front end clamping mechanism 38. The movement of the body W held by the rear end clamp mechanism 48 is repeated alternately, and buttonholes are mended at a plurality of locations on the body.

[Effects of the Invention] As is clear from the detailed description above, the present invention provides a bending member that is arranged between the cloth setting position of the fabric placement plate and the delivery position to the sewing device, and the fabric placement plate Since the folding member is configured to be moved from above to below the mounting plate before being moved to the delivery position, the fabric is folded in half when the fabric is supplied to the sewing device. Therefore, it becomes possible to omit the step of folding the front part of the body in two by the worker, which was a conventional step before sewing, and this has the excellent effect of significantly shortening the working time.

[Brief explanation of drawings]

1 to 6 show examples embodying the present invention. FIG. 1 is a perspective view showing the entire continuous buttonhole sewing machine equipped with an automatic loading device, and FIG. 2 is a perspective view thereof. A side view showing only the automatic loading device, Fig. 3 is a plan view of the automatic loading device, Fig. 4 is a front view showing only the transfer mechanism of the continuous buttonhole sewing machine, and Fig. 5 explains the folding control of the fabric. The explanatory diagram, FIG. 6, is a block diagram of the control device. In the figure, 8 is a fabric mounting plate, 14 is an air cylinder (first driving means), 25 is a bending member, 26 is an air cylinder (second driving means), 30 is a work table, and 31 is a buttonhole sewing machine. 38 is a front end clamp mechanism, 46 is a front end clamp, 48 is a rear end clamp mechanism, 54 is a rear end clamp, 70 is a transfer motor, and CU is a control device.

Claims (1)

[Claims] 1. A work table (30), a cycle sewing machine (31) placed on the work table for sewing buttons or buttonholes on fabric, and a clamp capable of holding and releasing the fabric. Transfer means (38, 48, 70, etc.) having means (46, 54) and sequentially transferring a plurality of sewing points on the fabric to the needle drop point of the cycle sewing machine by moving the means (46, 54) along the work table; In a sewing device that performs button sewing or buttonhole stitching at the sewing location by alternately repeating machine stitching by a cycle sewing machine and cloth feeding by a transporting means multiple times, a set position (P1) remote from the transporting means; and close to the transfer means and the fabric is placed in the clamping means (46, 5).
a fabric placement plate (8) movably provided between the fabric placement plate (8) and the delivery position (P2) for transferring the fabric to the fabric placement plate (P2); and a first driving means (14) for moving the fabric placement plate; A bending member provided movably between a position above the fabric placement plate and a position below the fabric placement plate on the transfer position side of the fabric placement plate disposed at the set position. 25); a second driving means (26) for moving the folding member; Control means (CU) that controls the first and second driving means to move the fabric to the delivery position, and bends the protruding portion of the fabric placed on the fabric placement plate toward the lower surface of the fabric placement plate. An automatic fabric loading device for a sewing device, characterized by comprising: