JPH023632B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is capable of storing small items by folding a sheet material such as flexible cloth or vinyl in the middle to make it double, and sewing both sides of this double. This invention relates to a pocket sewing device for forming a pocket for a pocket.

(Prior Art) As a conventional technique, a single sheet material is manually folded into a double layer, and both sides of the double layer are sewn together one by one using a sewing machine.

(Problems to be Solved by the Invention) In the conventional method described above, the sheet material was manually folded, which required a lot of work and had the drawback that the folding position was inaccurate.

Furthermore, since the doubled sides were sewn together one at a time, the positioning process was increased and it was difficult to stitch both sides uniformly, which resulted in the disadvantage that it was time consuming and required skill.

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel pocket sewing device that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.

That is, a pair of sewing machines fixed to a base at a distance in the left and right direction, and a movable table supported so as to be movable back and forth are provided, and the movable front part is mounted above the front and above the rear of a mounting plate fixed to the movable table. The plate and the rear movable plate are sequentially arranged at high positions, and a clamping mechanism for clamping the sheet material is provided at the front of the mounting plate, and a drive for driving the movable platform, the front movable plate, and the rear movable plate in the front and rear directions, respectively. A control device is provided to drive and control the sewing machine, the clamping mechanism, and the drive mechanism, and after operating the clamping mechanism, the front movable plate is moved rearward by a predetermined amount, and then the rear movable plate is moved backward by a predetermined amount. The sewing machine is configured to move forward to a position above the front movable plate, then move the movable table forward, and then start and control the sewing machine.

(Function) Since the present invention has the above configuration, the front part of the sheet material placed on the placing plate is held by the operation of the holding mechanism, and the sheet material is removed by moving the front movable plate backward. The position of the fold is set, and by moving the rear movable plate forward, the rear part of the sheet material is folded toward the front side centering on the fold position,
By moving the movable table forward, both sides of the folded portion of the sheet material arrive at a pair of sewing machine sections, and then, when the sewing machines are activated, both sides of the folded portion are simultaneously sewn together.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the drawings, FIGS. 1 to 4 are perspective views of main parts showing the first to fourth steps according to the embodiment of the present invention, and FIG.
8 are explanatory diagrams showing the operating states of the first to fourth steps, and FIG. 9 is a flowchart of the control device.

In FIGS. 1 and 5, reference numerals 2 and 2 designate sewing machines that are vertically fixed to the base 1 and spaced apart from each other in the left-right direction.

The space between the sewing machines 2 and 2 on the base 1 is recessed downward, and a movable table 3 is placed on this portion so as to be movable back and forth via rollers 3a.

As shown in FIG. 5, a mounting plate 4 is connected to an intermediate portion of the movable base 3 in the front-rear direction, extending in the front-rear direction, and a front portion is connected to the front and rear of the movable base 3. A movable plate 5 and a rear movable plate 6 are placed so as to be movable back and forth, and the front movable plate 5 is moved back and forth by a second cylinder C2, and the rear movable plate 6 is moved back and forth by a third cylinder C3.

The front movable plate 5 is disposed above the upper surface of the mounting plate 4 on the front side so as to maintain a gap slightly larger than the thickness of the sheet material 20, and the rear movable plate 6 is It is arranged above the mounting plate 4 on the rear side of the above-mentioned mounting plate 4, and at the same time as maintaining a gap slightly larger than the thickness of the sheet material 20 with respect to the upper surface height of the front movable plate 5. Place it in

A clamping mechanism 7 is provided on the front side of the placement plate 4. As shown in FIG. 5, this clamping mechanism 7 has a U-shaped groove frame 7a supported by a base fitted to the front end of the mounting plate 4, and a first cylinder C1 attached to the lower surface of the groove frame 7a. It becomes. The clamping mechanism 7 moves the cylinder rod upward to move the front end of the mounting plate 4 to the lower surface of the groove frame 7a.
This is for holding the front end 20a of the sheet material 20 placed on the mounting plate 4 between the front end of the mounting plate 4 and the lower surface of the groove frame 7a.

The amount of rearward movement of the front movable plate 5 is set at a position where the rear end 5a reaches a predetermined amount forward with respect to the rear end 4a of the mounting plate 4, as shown in FIGS. 2 and 6, As a result, the fold position A of the sheet material 20 placed on the placement plate 4 is determined.

Further, the amount of forward movement of the rear movable plate 6 is as follows:
As shown in FIGS. 3 and 7, its front end 6a
is set at a position where it reaches a predetermined amount in front of the rear end 5a of the front movable plate 5 that has moved backward, and thereby,
Rear part 20b of sheet material 20 placed on placement plate 4
Fold it forward using the above crease position A as a reference.

Furthermore, the movable table 3 is moved rearward by the fourth cylinder C4, and the amount of movement is shown in FIGS. 4 and 8.
As shown in the figure, the front end A of the folded portion of the sheet material 20 bent by the front movable plate 5 and the rear movable plate 6 reaches the sewing machine 2.

As shown in FIG. 8, the amount of forward movement of the movable table 3 is such that after being moved rearward by the fourth cylinder C4, the rear end of the folded portion of the sheet material 20, that is, the crease position A. The movable table 3 is moved by an amount that can be moved toward the sewing machine 2 by the extension operation of the fourth cylinder C4.
The folded part of the sheet material 20 can be moved forward as the folded part of the sheet material 20 is sewn by the sewing machine 2 from the front end A to the rear end.

In the figure, C6 is a sixth cylinder, which is used to move the movable base 3 that has moved forward most backward and return it. Further, C5 is a fifth cylinder that moves up and down, has a suction cup 9 at the lower end, and lifts the sheet material 20 sewn by the sewing machine 2 upward from the mounting plate 4 and moves it to the next process. It is something.

Here, as shown in FIG. 5, a control device 15 is provided which sequentially drives and controls the first to sixth cylinders C1 to C6 and the sewing machine 2 in a predetermined cycle.

This control device 15 includes each switch S1, which will be described later.
The sewing machine includes a detection circuit 16 that inputs the signals from S13 to S13, and a drive circuit 17 that drives the cylinders C1 to C6 and the sewing machine 2 by the detection circuit 16.

Each of the above switches S1 to S13 is configured as follows. That is, a starting switch S1 is attached to the front bent portion of the rear movable plate 6, a photo sensor S2 that is turned on when the piston approaches the first cylinder C1 is attached to the upper part of the first cylinder C1, and a photo sensor S2 is attached to the upper part of the first cylinder C1.
Reed switches S3 to S8 and reed switches S12 and S13, which are turned on when the respective pistons approach, are installed at both left and right ends of the fourth cylinder C4 and sixth cylinder C6, and a similar reed switch is installed at the top of the fifth cylinder C4. 11, a negative pressure switch S10 is attached to the upper part of the suction cup 9, and a limit switch S9 is attached to the rear of the movable table 3.

The drive circuit 17 includes each switch S1 to
By inputting the signal of S13, the first cylinder C1 to the fourth cylinder C4 are sequentially driven and controlled,
Next, after starting the sewing machine 2, the fifth and sixth cylinders C5 and C6 are sequentially driven and controlled.

A flowchart for executing the above-mentioned control is shown in FIG. In the figure, numerals 30 to 51 indicate each step of the flowchart.

When the start switch S1 is turned on at 30, 3
1, the piston of the first cylinder C1 moves upward to raise the front part of the placing plate 4, thereby clamping the front end 20a of the sheet material 20 placed on the upper surface of the placing plate 4.

When the photo sensor S2 of the first cylinder C1 is turned on at 32, the second cylinder C2 is shortened at 33 to move the front movable plate 5 backward, and the rear end 5a
The fold position A of the sheet material 20 is determined by (FIG. 2 and FIG. 6).

When the reed sensor S3 of the second cylinder C2 is turned on at 34, the third cylinder C3 is shortened at 35 to advance the rear movable plate 6 and move the front end 6a of the third cylinder C3 forward.
Then, the rear part 20b of the sheet material 20 is folded forward based on the fold position A (FIGS. 3 and 7).

When the lead sensor S6 of the third cylinder C3 is turned on at 36, the fourth cylinder C4 is extended at 37 to advance the movable base 3 and move the sheet material 2
Move the front end A of the folded portion 0 to the sewing machine 2 position (FIGS. 4 and 8).

When the lead sensor S8 of the fourth cylinder C4 is turned on at 38, the pair of sewing machines 2 and 2 are started at 39, and while moving the movable base 3 forward, both ends 20c and 20c of the folded portion of the sheet material 20 are sewn together. Stitch from the front edge A to the back edge at the same time.

When the movable table 3 is moved forward to the maximum, the limit switch S9 is turned on at 40, and the first to third cylinders C1 to C3 are returned to operation at 41, and the front and rear movable plates 5 and 6 are separated from each other, and the seat member 20 is turned on. At the same time, the holding mechanism 7 is released.

When the reed switches S4 and S5 are turned on by the return operation of the second and third cylinders C2 and C3 at 42, the fifth cylinder C5 is extended and its suction cup 9 descends at 43 to suck the sheet material 20. .

At 44, the negative pressure switch S10 is activated by the suction of the suction cup 9.
When the reed switch S11 is turned on, the fifth cylinder C5 is shortened at 45 to convey the sheet material 20 upward from the mounting plate 4, and when the reed switch S11 is turned on at 46, the sixth cylinder C6 is shortened at 47. The movable base 3 is moved rearward and returned, thereby returning the mounting plate 4 and the front and rear movable plates 5 and 6 to their initial positions with the movable plates 5 and 6 spaced apart from each other.

Then, when the reed switch S12 is turned on at 48, the sixth cylinder C6 is extended and returned to its initial position at 49, and when the reed switch 13 is turned on (50) at 50, a series of operations are performed at 51. Complete the cycle.

(Effects of the Invention) As is clear from the above description, the present invention allows the front movable plate to set the fold position of the sheet material placed on the placement plate, and the rear movable plate to set the fold position of the sheet material placed on the placement plate, and to set the fold position of the sheet material placed on the placement plate using the rear movable plate. The rear part of the bag is folded over to the front side, and both sides of the folded part are simultaneously sewn together using a pair of sewing machines, so that the pocket can be sewn quickly and with high precision.

[Brief explanation of drawings]

FIGS. 1 to 4 are diagrams 1 to 4 according to embodiments of the present invention.
FIGS. 5 to 8 are explanatory diagrams showing operating states of the first to fourth steps, and FIG. 9 is a flowchart of the control device. 1: Base, 2: Sewing machine, 3: Movable base, 4: Placement plate, 4a: Rear end, 5: Front movable plate, 5a: Rear end, 6: Rear movable plate, 6a: Front end, 7: Holding mechanism , 8: Conveyance mechanism, 9: Suction cup. 15: control device,
16: detection circuit, 17: drive circuit. C1-C6:
1st cylinder to 6th cylinder, S1 to S13: switch. 20: Sheet material, 20a: Front end, 2
0b: Rear part, 20c: Both ends of the folded part.

Claims (1)

[Claims] 1 A pair of sewing machines fixed to a base at a distance in the left-right direction and a movable table supported so as to be movable back and forth are provided, and the front movable plate is placed above the front and rear part of the mounting plate fixed to the movable table. and a rear movable plate are sequentially arranged at high positions, a clamping mechanism is provided at the front of the mounting plate to clamp the sheet material, and a drive mechanism drives the movable platform, the front movable plate, and the rear movable plate in the front and rear directions, respectively. and a control device for driving and controlling the sewing machine, the clamping mechanism and the drive mechanism, and after operating the clamping mechanism, the front movable plate is moved rearward by a predetermined amount, and then the rear movable plate is moved. A pocket sewing device characterized in that the sewing machine is started and controlled after moving the front movable plate forward to a position above it, then moving the movable table forward.