JPS5946194B2 - Towel hem automatic sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic towel hem sewing machine that automatically cuts a towel, folds the towel hem in three, and sews the towel hem.

Since the development of an automatic towel finishing machine has been started, the main devices that make up the machine, such as the tri-folding device and the conveyance/feeding device, have each adopted unique mechanisms and have been published in patent utility model publications and industry papers. However, automatic towel finishing machines that perform all the cutting, tri-folding, and sewing operations have not been able to perform the task stably because the towels are soft and stiff, and some parts still rely on manual work. there were.

The present invention aims to provide a stable automatic towel hem sewing machine that synchronizes the above-mentioned cutting, tri-folding, and sewing operations and consistently and automatically sews towel hems using a clamp conveying device with a streamlined configuration. purpose.

Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is an explanatory diagram showing the configuration of the cutting device shown in Fig. 1, and Fig. 4g is the same. Fig. 4 is an explanatory diagram of the principle of operation of the ruler of the press-folding device, Fig. 4 is an explanatory diagram of the principle of tri-folding of the dual-purpose ruler, and Fig. 5g is the transportation of the towel onto the primary folding ruler and secondary folding ruler using the dual-purpose ruler. Figure 5 is an explanatory diagram of the primary process showing primary folding using a primary folding ruler, and Figure 5C is a secondary process in which the dual-purpose ruler is pulled out from the primary folding part and then the primary folding ruler presses the primary folding part. Figure 5 d is an explanatory diagram of the secondary process in which the dual-purpose ruler presses the edge of the towel, Figure 5 e is an explanatory diagram of the tertiary process showing the return of the primary folding ruler, and Figure 5 f is an explanatory diagram of the secondary folding ruler that presses the edge of the towel. Figure 5g is an explanatory diagram of the tertiary process showing the secondary folding, and Figure 5g is an explanatory diagram of the 4th process in which the dual-purpose ruler is pulled out from the secondary folding part and the secondary folding ruler presses the secondary folding part. The next process explanatory diagram, FIG. 6, is an explanatory diagram of the original fabric.

In the figure, 1 is a cutting device according to the present invention.

This cutting device 1 is controlled by a control device 5 described below.The cutting device 1 is operated by a thickness detector 12 that detects the original fabric A of the towel composite product, which is intermittently fed from the lateral direction of the frame main body 100 by the rotation of the feed roller 11. The feeding by the feed roller 11 is stopped in response to the detection signal of the towel pile weaving section 1a of A, and at the same time it is held down by the clamp 13, and the slack section 3a of the raw fabric A located at a predetermined distance from the pile weaving section 1a is detected by the thickness detector. The paper is stopped at a cutter 14 position located at the same distance as the above distance from the position 12, and then cut by the cutter 14.

The cut towel a is moved by a dual-purpose ruler 41 a s 4 l b of the clamp conveying device 4 described below, and is thereby clamped.

Next, this cutting device 1 disables the feed roller 11, and then lifts up the front end portion 4a of the cut towel hem using the lifting plate 15, and removes the cutter 14 from the underframe 1 on which the cutting device 14 is placed.
10a is placed on the underframe 110b, it moves across the board while being guided by the guide stand 1200, grabs the front end 4a, returns and moves the original fabric A to the underframe 110a, 110b, and then the towel pile woven portion 1a of the raw fabric A is measured by the thickness detector 12.
feed roller 1 until it receives stop control based on the detection signal of
3 feed rollers that rotate and feed the raw fabric A at the operating position where it comes into contact with the raw fabric A by 1, stop at a predetermined position as described above to perform cutting, and repeat the feeding, cutting, and horizontal stacking intermittently and cyclically. 11 is rotationally driven by a motor 11a via a belt and a pulley, and rotates and feeds the original fabric A whose distortion has been corrected by a cross guider or distortion corrector 19 in advance, and levers 11c and 11e by a pneumatic cylinder 11b.
, are moved upward and downward to the non-operating position and the operating position, respectively, via the shaft 11d.

The motor 11a and the pneumatic cylinder 11b are controlled by the following control device to start their downward movement and rotation in accordance with the return confirmation signal of the gripper horizontal carrier 16, and to stop their rotation by the detection signal from the thickness detector 12. Moreover, its upward movement is controlled by a club confirmation signal from the dual-purpose ruler 41.

The thickness detector 12 is placed at a distance from the blades 14a, 14b of the cutter 14 between the pile weave portion 1a and the slack portion 3a of the towel a, and generally uses Trittron (trade name) manufactured by Citizen. Ru.

It is inactive while the original fabric A is being conveyed horizontally by the gripper and horizontal conveyor 16, and is activated only after the feed roller 11 descends and starts rotating the original fabric A. ,
The pile weave part 1 is thicker than the plain weave 2a of the towel.
A detection signal is transmitted at point a.

The clamp 13 is placed in front of the cutter 140, and is attached to the raised plate 1 shown below.
5, and the start of its clamping action is controlled by the above-mentioned thickness detection signal via the parallel ruler link mechanism 13b by an air cylinder, and the release of its clamping action is controlled at the same time as the rising plate 15 starts to rise. It will be done.

The cutter 14 is a frame 110aK of either one of a pair of frames forming the frame body 100, and blades 14a, 14.
b is installed so that it is parallel to the longitudinal horizontal direction of the frame body 100.

The upper blade 14a is driven up and down by a pneumatic cylinder 14c fixed on the bridge 14d along a guide rod forming a support of the bridge 14d.

The lower blade 14b has the upper blade 14a fixed to the underframe 110a.
The cutting operation of descending upward, cutting the original fabric A, and ascending is performed after the clamp 13 has descended and clamping is completed.

The raised plate 15 is arranged horizontally adjacent to the front side of the lower blade 14b, and uses a pneumatic cylinder and a parallel ruler link mechanism to raise the front end 4a of the cut towel raw material A.
is placed on the upper surface, and raised to an appropriate position above the level of the lower blade 14b by a cutting confirmation signal.

The return to the lower position is performed until the gripping and horizontal conveyor 16 has returned by gripping the front end portion 4a.

As described above, the gripping horizontal frame conveyor 16 moves the underframe 11 along the guide rail 121 via the motor 16a, timing bell) 16b, clip 16c, etc. arranged on the guide frame.
0b and the underframe 110a, and is opened by the pneumatic cylinder 16d, a lever, and a support shaft, which is activated by the upward return signal of the upper blade 14a of the cutter 14, and the underframe 110a.
The front end portion 4a of the original fabric raised by the lifting plate 15 is gripped by the gripping portion 16e, which closes in response to a signal of reaching a predetermined position above.

The original fabric A is suspended horizontally on the underframe 110b, and a dual-purpose ruler 41a,
41b moves and opens in response to a clamp confirmation signal that clamps the original fabric A, releasing the front end 4a.

In the figure, 2 is a tri-folding device according to the present invention.

This tri-folding device 1 is controlled by the control device 5 described below, and is a surface area that performs tri-folding of underframes 110a and 110b that face each other in parallel, and is on the same level as the upper surface of the underframes 110a and 110b, and is mutually Secondary folding rulers 22a, 22b, and secondary folding ruler 21a are arranged sequentially outward from the opposing inner end plates.

The hems 4a and 5a of the respective hems 4a and 5a are clamped and fed from the cutting device 10 by the rulers 41a and 41b of the conveying device 4, which also serve as conveyance guides, on the upper surface of the hem 21b, and the hems 4a and 5a are placed on the upper surface of the secondary folding ruler 22a s 22b. A dual-purpose ruler 41a is used to clamp the towel a.

a primary step of continuously moving the primary folding rulers 21a, 21b upward, inward, and downward toward the upper surface of the hem 41b, thereby primary folding the hems 4a, 5a;
The dual-purpose rulers 41a and 41b are unclamped from the folded part and pulled out by moving to the rear medial side, and the tips of the hems 4a and 5a, which have been folded primarily by moving the ends upwardly to the outside of the radius and turning downwards, are folded as shown above. A secondary step of clamping again on the inner end plate, and the second folding rulers 21a, 21b are placed adjacent to each other on the inner side after returning to their inoperative positions to support the double folded hems 4a, 5a. By continuously moving the secondary folding rulers 22a and 22b upward, inward, and downward, the double folded hem 4a,
Dual-purpose rulers 41a and 41 that are clamping part 5a again
a secondary process of performing secondary folding toward the upper surface of b, and a dual-purpose ruler 41a;

41b from the secondary folding part by releasing the clamp and moving it to the rear medial side, and remove the three folded hems 4a and 5a
A transportation-dedicated clamp 42 of the transportation device 4 that transports the part to the relay location to the sewing device 3 while sliding the clamp.
a quaternary step of clamping by a s 42 b, and the secondary folding ruler 22a.

22b returns to its inoperative position.

The primary rulers 21a and 21b, the secondary rulers 22a and 22b, and the dual-purpose rulers 41a and 41b are pneumatic cylinders and link mechanisms that perform parallel movement and swinging movement (combined ruler only) in the horizontal direction of the X axis and the vertical direction of the Y axis, respectively. has.

The primary rulers 21a and 21b are arranged horizontally so that their upper surfaces are substantially on the same level as the upper surfaces of the underframes 110a and 110b, and the towels conveyed onto the upper surfaces thereof by the pneumatic cylinders 21x and 21y and the link mechanism 21L are placed horizontally. The ends 4a, 5a are appropriately moved upward (y-axis positive direction) and then horizontally (X-axis direction) and folded back onto dual-purpose rulers 41a, 4Ib which are clamping the towel a.

Next, the clamped dual-purpose rulers 41a and 41b are released from the folded portion in the X-axis direction by the pneumatic cylinder 41y, and then moved via the pneumatic cylinder 41x and the link mechanism 41L.
1y is supplied with pressurized air, moves slightly upward, and moves in the X-axis direction by a pneumatic cylinder 41x to an intermediate position for secondary folding (the upper surface position of the inner end of the underframe 110), and then moves to the ends 4a and 5a.
is pressed down by the pneumatic cylinder 41y.

- By the secondary folding rulers 22a, 22b disposed inside the secondary folding rulers 21a, 21b at the same level and parallel to them, the primary folded part resting on the upper surface is clamped at the ends 4a, 5a. A dual-purpose ruler 41a.

Fold back onto 4Ib.

Next, the clamped dual-purpose rulers 41a and 41b are unclamped from the folded portion, and the pneumatic cylinder 41X
The pneumatic cylinder 41y and the link mechanism 41 are moved in the X-axis direction by the link mechanism 41L, and then moved slightly upward by the pneumatic cylinder 41y and the link mechanism 41.
Move by L and exit.

Simultaneously with the movement of the dual-purpose ruler in the X-axis direction, the secondary folding rulers 22a and 22b also move downward to press the secondary folded portion.

Next, a dedicated clamp 42a of the clamp conveying device 4 is placed on the tri-fold portion clamped by the secondary folding rulers 22a and 22b.

42b moves, clamps it, and then transports it to a relay location.

At the same time as the special clamps 42a and 42b move, the dual-purpose rulers 41a and 41b that were holding down the primary folding section move to the cutting device 1, clamp the cut towel a, and then transport it to the tri-folding device 2. .

All of these sequential operations are performed by the control device 5 and an operation confirmation signal for each cylinder by a limit switch, which is widely used.

In the figure, 3 is a sewing device according to the present invention.

This sewing device 3 receives the control device 50 described below, and relays the sewing machine feed clamp 43 a s 43 b of a towel a having a three-folded hem, which has been transported to the relay place by the dedicated clamps 42 a and 42 b. After receiving the supplies from the location, the hem part that is folded in three is sewn.

The sewing device 3 consists of a power sewing machine 31 and a sewing machine feed guide stand 44a as described below.

a sewing machine feeding clamp 43a that moves along 44b;
43b, the section of the towel a taken over at the relay place that was being held down by the secondary folding rulers 22a and 22b is pressed and fed by the sewing machine, and the trifold bottom towel hem is sewn.

In the figure, 4 is a clamp conveying device according to the present invention.

This clamp conveyance device 4 includes a dual-purpose ruler 41 a that simultaneously and integrally moves in the longitudinal and horizontal directions of the frame body 100 along a hanging guide 40 suspended from the guide frame 120.
, 41b, dedicated clamps 42a, 42b, and a sewing machine feed guide stand 4 fixed to the underframes 110a, 110b.
Sewing machine feed clamp 4 moving along 4a and 44b
3a.

43b.

The hanging guide 40 includes guide rails 40a and 40b on both sides parallel to the longitudinal and horizontal direction of the frame body 100, and includes the dual-purpose rulers 41a and 41b and special clamps 42a and 42.
A motor 45 is arranged to move b.

, this motor 45 lowers and lowers the upper blade 14a of the cutter 14.
The timing bell is activated by the ascent completion signal and the descent completion signal that presses the secondary folding portion of the secondary folding ruler 23.
45a and the guide rail 41 via the clip 45b.
A dual-purpose ruler 41a along lines a and 41b.

41b and special clamps 42a and 42b respectively in the cutting device 1.
and move it to the tri-folding device 2.

Then, the pneumatic cylinder 41y is activated by the arrival completion signal.

42y respectively, and the cut towel a is placed in the exclusive clamp 42a using the dual-purpose rulers 41a and 41b.

42b clamps the hem portion which has been folded into three.

Next, the release confirmation signal of the grip part 16e and the special clamp 4
The motor 45 is reversed by the clamp confirmation signal of 2A S 42 B and the return confirmation signal of the secondary folding ruler 23, and the dual-purpose ruler 41A S 4L B transfers the towel A to the tri-folding device 2 by the exclusive clamp 42A.

42b transports the three-folded towels at the hem portion to the relay locations.

The tri-folding operation is started by the return arrival confirmation signal, and at the same time, the sewing machine feeding clamp 44, which has been waiting, clamps the tri-folded towel.

The dedicated clamp 42a is activated by the clamp confirmation signal of the sewing machine feeding clamp 44.

The clamp at 42b is released.

The sewing machine feed clamp 43 a s 43 is activated by the clamp release confirmation signal of the dedicated clamps 42 a and 42 b.
b is the frame body 1 on the underframes 110a and 110b, respectively.
A guide stand 44a fixed parallel to the longitudinal horizontal direction of 00.

44b, the towel a is moved by the motor 46 via a timing belt and a clamp from the relay location to the location where the sewing of the towel a is completed by the power sewing machine 31.

The clamps 43a, 43b, and 43b for sewing machine feed are released by the sewing completion location confirmation signal.
It moves to the relay location by reversing the motor 46.

In the figure, 5 is a control device according to the present invention.

This control device 5 transfers the cut towel a to the tri-folding device 2 using dual-purpose rulers 41a and 41b, a special clamp 42a,
42b transports the three-folded towel a to a relay location while simultaneously clamping each towel, and at the relay location, a clamp 43a for feeding the sewing machine.

43b, the towel a folded into three is transferred and sewn by the sewing machine while being clamped, and control is performed so that the sewing work, the above-mentioned cutting work, and the three-folding work are performed simultaneously.

This control device 5 consists of a sequence controller, and receives input of position confirmation signals of limit switches attached to each operating device and thickness detection signals of thickness detectors.
It emits an output signal that controls a solenoid valve that switches pressurized air to a motor or pneumatic cylinder.

This control function is as described in detail in the operation description of the cutting device 1, tri-folding device 2, sewing device 3, and clamp conveying device 4 that constitute the automatic towel hem sewing machine according to the present invention.

As described in detail above, the automatic towel hem sewing machine according to the present invention overcomes the characteristics of soft and stiff towels and automatically cuts, folds, and folds them into three parts from the original fabric, which is a towel composite product.
This allows for stable sewing and greatly contributes to rationalization in the sewing industry.

[Brief Description of the Drawings] Fig. 1 is a plan view showing an embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the invention.
Figure 3 is an explanatory diagram showing the configuration of the cutting device in Figure 1, Figure 4g is an explanatory diagram of the principle of operation of the ruler in the pressure folding device, and Figure 4 is a tri-folding of the dual-purpose ruler. An explanatory diagram of the operating principle. Figure 5g is an explanatory diagram of the primary process showing conveyance of a towel onto a primary folding ruler and a secondary folding ruler using a dual-purpose ruler. Figure 5 is a primary process showing primary folding using a primary folding ruler. Explanatory diagram,
Figure 5C is an explanatory diagram of the secondary process in which the dual-purpose ruler is pulled out from the primary folding part and then the primary folding ruler presses the primary folding part, Figure 5d
Figure 5 is an explanatory diagram of the secondary process in which a dual-purpose ruler presses the edge of the towel.
Figure e is a tertiary process explanatory diagram showing the return of the primary folding ruler, the fifth
FIG. Fifth
The diagram is an explanatory diagram of the fourth process, which is held down with a special clamp, and the sixth
The figure is an explanatory plan view of the original fabric. Explanation of symbols, 1... Cutting device, 2...
Tri-folding device, 3...Sewing device, 4...
・Clamp conveyance device, 5...Control device, 11.
... Feed roller, 12 ... Thickness detector, 13 ... Clamp, 14 ... Cutting device, 15 ... Raising plate, 16・・・・・・Grabbing horizontal rack conveyance story, 21 a s 2 l b ・・・・・・
-Next fold ruler, 22a. 22b...Secondary folding ruler, 40...Hanging guide, 41 a, 41 b=...Dual use ruler, 42
a, 42b・”・・・Special clamp, 43a, 43b・
...Sewing machine feed clamp, 44 a s 44
b... Sewing machine feed guide stand, i o o...
-Frame body, 110a, it Ob...Underframe, 120...Guide stand, A...Original fabric, a...Towel, 1a... ...Pile weaving part, 3a... Sema part, 4a, 5a... Towel end.

Claims (1)

[Claims] 1. A pair of underframes 110 facing each other in parallel with an appropriate distance between them.
a, 110b, and these underframes 110a. A cutting device 1 and a tri-folding device 2 are arranged in process order from the front along the longitudinal horizontal direction of the frame body 100, which has a guide frame 120 that connects the frame body 110b in the horizontal direction.
, a sewing device 3, a clamp conveying device 4 that sequentially clamps and conveys towels to these devices, and these devices 1, 2, 3.
．． In the automatic towel hem sewing machine, the cutting device 1 is controlled by the control device 5 described below, and is intermittently controlled by the rotation of the feed roller 11 from the lateral direction of the frame body 100. The feeding of the raw fabric A of the towel composite product that is being sent is stopped by the feed roller 11 in response to a detection signal of the towel pile weaving portion 1a of the raw fabric A by the thickness detector 13, and the roller 11 is moved to an inactive position. At the same time, a clamp 13 disposed near the cutting position holds the raw fabric A, and the slack part 3a of the raw fabric A, which is located at a predetermined distance from the pile weaving part 1a, is moved at the above distance from the thickness detector 12. The cutter 14 is stopped at the same distance as the cutter 14, and then the towel hem is cut at the free space 3a, and the front end 4a of the cut towel hem is lifted up from the upper surface of the frame by the lifting plate 15. Underframe 11 facing the arranged underframe 110a
The gripping horizontal frame conveyor 16 disposed at 0b moves across the board while being guided by the guide frame 120, grabs the front end 4a, returns and transfers the original fabric A to the underframes 110a, 11.
0b, and then at the operating position where the feed roller 11 makes contact with the original fabric A until the thickness detector 12 receives a stop control based on the detection signal of the towel pile woven portion 1a of the original fabric A. The three-folding device 2 is controlled by the control device 5 described below and performs three-folding of the parallel underframes 110a and 110b. Secondary folding rulers 22a, 22b, 21a, which are surface areas and are arranged on the same level as the upper surfaces of the underframes 110a, 110b and are arranged sequentially outward from the inner end plates facing each other. . The hems 4a and 5a are placed on the upper surface of the hem 21b by the rulers 41a and 41b of the conveyor 4 while being clamped and slid from the cutting device 10, and then placed on the secondary folding rulers 22a and 22b. A dual-purpose ruler 41a clamps the towel a. The primary folding rulers 21a, 21b are continuously moved upward, inward, and downward toward the upper surface of the hem 41b, thereby primary folding the hems 4a, 5a, and the dual-purpose rulers 41a, 41b. Release the clamp from the primary folding part, move the hem 4a and 5a to the rear medial side, pull it out, move the tip upward to the outside of the turning radius, and turn the tip of the hem 4a, 5a, which has been folded for the first time, again on the inner end plate. After the secondary folding rulers 21a and 21b return to their inoperative positions, the secondary folding rulers 22a and 22b are arranged adjacent to each other on the inner side and support the double-folded hems 4a and 5a. The double-folded hem 4a is moved upward, inward, and downward continuously.
, dual-purpose ruler 41a, 4 which is clamping part 5a again
A tertiary process of performing secondary folding toward the upper surface of 1b, and a dual-purpose ruler 41a. A conveying device that releases the clamp from the secondary folding part and moves the hem 41b toward the rear inside to pull it out, and conveys the three-folded hems 4a and 5a to a relay location to the sewing device 3 while sliding the clamp. No. 4 transport-only clamp 42a,
42b, and the secondary folding ruler 22a. 22b returns to its inoperative position, and the sewing device 3 receives the control of the control device 5 described below. The sewing machine feeding clamps 43a and 43b of the towel a having a hem are fed from the relay place, and the three-folded hems 4a and 5a are sewn, and the clamp conveying device 4 is suspended from the guide frame 120. dual-purpose rulers 41a and 41b that move simultaneously and integrally in the longitudinal and horizontal directions of the frame body 100 along the hanging guides 40;
and a dedicated clamp 42a. 42b and sewing machine feed clamps 43a and 43b that move along sewing machine feed guide tables 44a and 44b fixed to the underframes 110a and 110b, and the control device 5 controls the cut towel a by the dual-purpose rulers 41a and 41b. to the trifold device 2, special clamps 42a, 4
2b and folded into three by 4a. 5a are conveyed to a relay location while being clamped at the same time, and at the relay location, the sewing machine feed clamp 4
3a and 43b, the towel a is held in a special clamp 42a,
An automatic towel hem sewing machine characterized in that the automatic towel hem sewing machine performs sewing by feeding the sewing machine while carrying over and clamping from 42b, and controls so that the sewing work, the above-mentioned cutting work, and tri-folding work are performed simultaneously.