JPH0257435B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a two-way wrapping device that winds and sews a ring-shaped rubber around the edge of the fabric, which is the waist area of cylindrical clothing such as pants, skirts, and trousers. It is related to.

(Prior art) Generally, when sewing an annular rubber into the waist area of pants, etc. using a sewing machine, the annular rubber is placed inside the edge of the annular fabric that will become the waist area, and then the edge of the fabric is sewn into the annular shape. Sewing is performed by wrapping the fabric around rubber and holding the end of the annular fabric and the annular rubber in tension.

(Problems to be Solved by the Invention) Conventionally, the work of wrapping the edge of the cloth around the annular rubber has been done entirely manually, which is not only time-consuming and inefficient, but also
This work requires skill, and the amount of winding is often inconsistent, resulting in a problem that the product tends to have a poor appearance.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to automatically wrap and attach an annular rubber to the fabric edge of the torso of clothing, and to attach the annular rubber to the fabric edge with a different circumference. The purpose of the present invention is to provide a two-winding device that can be applied to automatic winding.

(Means for Solving the Problems) In order to achieve the above object, the two-winding device of the present invention has a plurality of hooks arranged in a fixed machine frame and a movable machine frame that is movable back and forth with respect to the fixed machine frame. a sewn article mounting mechanism comprising locking rods and capable of supporting and tensioning an annular cloth from the inner circumferential side thereof, and arranged radially around the group of locking rods;
A plurality of rubber latching arms are provided for latching and holding the annular rubber, and the annular rubber can be fitted and attached from the outside under pressure to the annular portion of the annular cloth stretched over the latching rod group. A rubber hooking mechanism and a plurality of gripping means for elastically gripping the end of the annular cloth into which the annular rubber is fitted with a weak force due to the elastic force of the annular rubber are arranged along the circumference of the opening of the end of the annular cloth. A winding mechanism; and a moving means for relatively moving the sewn article mounting mechanism and the two-winding mechanism so that the cloth end side of the annular cloth elastically gripped by the gripping means of the two-winding mechanism is wound back onto the annular rubber. It is something.

(Function) According to the present invention having such a configuration, by appropriately moving the fixed machine frame and the movable machine frame in the sewn article mounting mechanism relative to each other according to the circumference of the annular cloth,
Regardless of the size of the circumference, the annular cloth can be supported in a stretched state from the inner circumferential side via the plurality of hanging rods without sagging. and,
The annular rubber latched and held by the plurality of rubber latching arms of the rubber latching mechanism can be externally attached to the annular cloth in such a supported state, and the annular cloth By elastically gripping the edge of the cloth and moving the gripped edge of the cloth toward the annular rubber via a moving means, the edge of the cloth is rolled back onto the annular rubber, and when the wrapping is finished, The end edge of the cloth can be automatically removed from the gripping means after being completely unwound by the elastic compression radial force of the annular rubber.

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

FIG. 1 is an overall perspective view with some parts omitted. In the figure, 1 is a sewing machine placed on a workbench 2, and 3 is a rail 4 and an air cylinder (not shown) on the workbench 2. A sewn article mounting mechanism 6 is opposite to the sewing machine 1 with respect to the sewn article mounting mechanism 3, and is movable as appropriate between the position of the sewing section of the sewing machine 1 and a position remote from the sewing section of the sewing machine 1. A rubber hooking mechanism 100 is attached to the machine frame 50 erected on the workbench 2 at a side position, and 100 is a two-winding mechanism attached to the machine frame 50.

The sewing machine 1 has an automatic thread cutting device (not shown) for upper thread and lower thread, and is also equipped with a presser foot 70 at the front of the needle drop position and a sewing product forced feed roller 8 at the rear. , which has three needles.

As shown in FIGS. 1 and 2, the sewn article mounting mechanism 3 includes a fixing machine frame 10 fixed to a base 9.
A moving means 2 consisting of a rail 11 on a base 9 and an air cylinder 12 is attached to the fixed machine frame 10.
00, the movable machine frame 13 is supported so as to be movable back and forth, and both machine frames 10, 13
A pair of hanging rods 14, 15, 16, 17 respectively.
These are distributed and deployed. The above fixed machine frame 10
The locking rod 15 on the lower side is a straight rod with a knurled surface, and the other locking rods 14, 16, and 17 are tapered rods whose diameter gradually increases from the base to the tip. In addition, the lower hanging rod 17 on the movable machine frame 13 side
The remaining locking rods 14, 15, and 16 can be rotated synchronously by the rotation of an external motor 18 via a multistage belt 19 and a pulley 20, as shown in FIG. Note that the lower retaining rod 17 on the side of the movable machine frame 13 is attached to the movable machine frame 13 so as to be rotatable only. The movable machine frame 13 is also connected to the upper and lower latching rods 16 and 1 of the movable machine frame 13 via the actuating rod 21a of the air cylinder 21.
A traveling/falling prevention mechanism 23 is installed between the 7 and 7 spaces so that the tapered rod 22 can move forward and backward. Here, the tapered rod 22 is a tapered hanging rod 14,
Similar to 16 and 17, the diameter gradually increases toward the tip. Further, an inverted air cylinder 24 is fixed to the fixed machine frame 10, and a support stand 25 is connected to the actuation rod 24a of this inverted air cylinder 24, as shown in FIG. On both sides, one end is rotatably supported via a pin, and a coil spring 26,
an operating piece 28 that is constantly pulled upward via 27;
29 is attached, and the operating rod 3 of the inverted air cylinder 30, 31 is mounted on the tip of each operating piece 28, 29.
0a and 31a are in contact with each other, and the actuating rod 30
By moving a, 31a downward against the tensile force of the coil springs 26, 27, the operating pieces 28, 29
constitutes a correction operation section 33 of the travel position correction mechanism 32 that rotates downward. Here, operation piece 2
The rotation directions of 8 and 29 are opposite. In addition, the operating pieces 28 and 2 of this traveling position correction mechanism 32
Reference numeral 9 operates in response to a detection signal from a sensor 60, and this sensor 60 has a pair of light emitting lights located directly below the center connecting between the upper locking rods 14 and 16 on the fixed machine frame 10 and movable machine frame 13 sides. Elements 61 and 62 are arranged, and a light receiving element 63 is arranged directly above the light emitting elements 61 and 62.

As shown in FIGS. 1 and 5, the rubber locking mechanism 6 includes the locking rods 14, 15, 16, 17
Rubber hanging arms 7... having four pairs of L-shaped hanging rods 7a are arranged radially in positions surrounding the rubber hanging arms 7a. This rubberized arm 7 is attached to two connected air cylinders 5 attached to an upright machine frame 50 on the workbench 2.
It is connected to actuating rods 52a of 1 and 52, so that its forward and backward positions can be changed.

As shown in FIGS. 6 and 7, the two-winding mechanism 100 is comprised of four sets of gripping means 101 arranged parallel to each rubber hooking arm 7 of the rubber hooking mechanism 6. Each gripping means 101 is attached via a bracket 102 fixed to the machine frame 50 side, is connected to an actuating rod 103a of an air cylinder 103 for advancing and retracting fixed to the bracket 102, and has a tongue-shaped tip at the tip. A gripping rod 106 to which the gripping plate 104 is attached so as to be able to rotate approximately 90 degrees via a rotation shaft 105, and a bracket 1
The first sliding groove 1 of the holding body 107 fixed to 02
07a, and has a second sliding groove 110a that supports the gripping rod 106 so that it can move relative to the bracket 1.
Air cylinder 10 for relative movement fixed to 02
The sliding body 11 connected to the actuating rod 109a of 9
0 and one end of the piano wire 111 to the gripping plate 104.
is connected to the lower end of the sliding body 110 via a rotation link 117, and the other end is made to protrude toward the rear side of this sliding body 110 through the long groove 110b of the sliding body 110, and a stopper piece 112 is fixed to the protruding tip. An operating rod 114 that connects the stopper piece 112 to the rear end of the gripping rod 106 via a coil spring 113
The gripping plate 104 is connected to the actuating rod 115a of the elastic pressure holding air cylinder 115 fixed to the gripping rod 106 and rotated through 90 degrees, and the curved spring body 116 faces the gripping plate 104. Then, the actuating rod 103a of the advancing/retracting air cylinder 103 is advanced,
With the gripping rod 106 fully advanced, the actuating rod 109a of the relative movement air cylinder 109 is moved back to move the sliding body 110 back, thereby causing the stopper piece 112 to resist the biasing force of the coil spring 113. The grip plate 104 at the tip of the grip rod 106 is rotated by 90 degrees, and in this state, the operating rod 115a of the air cylinder 115 for holding elastic pressure
By advancing the curved spring body 116, the grip plate 104 can be brought into contact with the curved spring body 116. (Illustrated with two-dot chain line in FIG. 6) Here, each gripping means 101 is attached around the axis of each of the locking rods 14, 15, 16, 17 on the machine frame 10, 13 side.
A pair of support rods 120 for supporting the cloth end opening from the inside are respectively attached at positions facing the cloth end opening. The mounting positions of the support rods 120 correspond to the maximum diameter positions of the hanging rods.

By the way, a three-winding mechanism 34 is provided on one side of the fixed machine frame 10. This three-winding mechanism 3
4, as shown in FIGS. 2 and 4, a rotation support pin 36 is fixed to the machine frame 10 side by the backward movement of the operating rod 35a of the air cylinder 35 fixed to the fixed machine frame 10. Rotate the link 37 around , extend the support base 38 at the tip of the link 37 to the side between the locking rods 14 and 15 of the fixed machine frame 10,
On the contrary, by moving the actuating rod 35a forward, the air cylinder 39 fixed on the support stand 38 is moved so that the support stand 38 is separated from the latching rods 14 and 15 and returned to its original position. Actuation rod 39
It is located on the a side. And the three-winding mechanism 34
As shown in FIG. 4, the actuating rod 39a
A guide main body 42 having a wrapper guide 41 having a substantially U-shaped cross section fixed to its tip is inserted into a through hole 40a of the swivel base 40 via a spring (not shown). The proximal end of the guide body 42 that has passed through the guide body 42 is brought into contact with the circumferential surface of the horizontal roller 44 attached to the actuation rod 38a side by the force of a spring, and the swivel base 40
is connected to the actuating rod 45a of the air cylinder 45 fixed to the actuating rod 39a, and by moving the actuating rod 45a of the air cylinder 45 forward and backward, the swivel base 40 is rotated and the guide body 42 is rotated. The flap guide 41 is configured to be able to protrude and retract with respect to the swivel base 40 so as to follow the circumferential surface of the horizontal roller 44. Further, the swivel base 40 is provided with a cloth support roller 46 that faces the lapper guide 41 when the swivel base 40 is rotated inward.

In such a configuration, first, in the starting state shown in FIG.
Hang the circular cloth A on 15, 16, and 17. and,
When the switch a is pressed, the movable machine frame 13 is laterally separated from the fixed machine frame 10, and the annular piece A is put in a tensioned state. (Fig. 8) Next, when switch b is pressed, the sewing material mounting mechanism 3 moves to the front of the sewing machine 1, and at the same time, each rubber hooking arm 7 of the rubber catching mechanism 6 moves as shown by the solid line in Fig. 5. gather together, and attach a thick annular rubber B to these
Multiply by

Next, when switch c is pressed, each rubber hanging arm 7 moves backward to the intermediate extended position, and at the same time, the annular rubber B is expanded to the extent that it surrounds and accommodates the annular cloth A, and at the same time, the sewn article mounting mechanism 3 to the set position, position the annular cloth A within the loop of the annular rubber B, and at the same time as it stops at this position, extend each rubber hanging arm 7 and place the annular rubber B on the outer periphery of the annular cloth A. state. In this state, as shown in FIG. 9, each rubber hooking arm 7... bites into the annular cloth A, and the annular rubber B is released from each rubber hooking arm 7.... and,
The sewn article mounting mechanism 3 is moved forward over a length equal to or more than the width of the annular rubber B, and only each rubber hooking arm 7 is separated from the annular rubber B. At the time of separation, each rubber hooking arm 7 is returned to its original position. to be restored. (Fig. 10) Next, when switch d is pressed, the two-winding mechanism 10
Each gripping rod 106 of 0 moves forward, and the gripping plate 10 at the tip
4 into the cloth end opening of the annular cloth A, these gripping plates 104 are rotated 90 degrees to be positioned inside the cloth end, and the curved spring body 116 is advanced to elastically grip the cloth edge. state. (FIG. 11) At this point, the sewn article mounting mechanism 3 is moved backward, and as a result of this backward movement, the elastically gripped edge of the cloth is wound back onto the front side of the annular rubber B, and When the edge of the cloth wraps around the annular rubber B, the diameter-reducing elastic force of the annular rubber B is applied to the edge of the cloth, and the edge of the cloth gradually slips out from between the elastic grip between the grip plate 104 and the curved spring body 116. and move away.

In this way, as shown in FIG. 12, a two-wound state is obtained in which the edge of the cloth is wound around the outer circumferential side of the annular rubber B.

While retracting the gripping rod 106 in this state,
With this retreat, the grip plate 104 and the curved spring body 116 return to their original states. Note that the folding width of the cloth edge is set so as to obtain a predetermined folding width when attaching the annular rubber B to the annular cloth A.

Then, the sewing article mounting mechanism 3 moves backward to the sewing section position of the sewing machine 1. Along with this movement, as shown in FIG.
16 are rotated synchronously to rotate the sewing product C made of the annular cloth A and the annular rubber B. Along with this rotation, the tapered rod 22 of the traveling fall prevention mechanism 23 is extended,
The rotating sewing material C is rotated to a fixed position and is prevented from falling off from the latching rods 14, 15, 16, 17. Further, along with this rotation, the traveling position correction mechanism 32 moves downward, correcting the positional deviation of the traveling sewing material C, and ensuring rotation in a fixed position. In other words, the sewing material C moves from the set rotational position to the latch rods 14,1.
5, 16, and 17, light is blocked between the light emitting element 61 and the light receiving element 63 of the sensor 60, and the operation piece 28 on the side that is displaced is activated based on the detection signal. Press the sewing material C to correct the deviation. In addition, in the case of deviation on the opposite side, the light emitted from the light-emitting element 62 that was shielded is received by the light-emitting element 63, and in response to this, the operation piece 29 presses the side end of the annular rubber part A on the side that has shifted. Correct the misalignment.

Further, as the sewn product C rotates, the wrapper guide 41 of the three-wrap mechanism 34 moves along the cloth edge side of the sewn product C, and the curved tip of the wrapper guide 41 is placed between the annular cloth A and the annular rubber B. Press the annular cloth A while intervening, guide the edge of the cloth between the annular cloth A and the annular rubber B, and sewn the sewing material C.
A continuous three-wound state is created along the rotation of .

By the way, the two windings of these two winding mechanisms 100,
The operations of preventing the running position correction mechanism 32 from falling off, correcting the deviation of the running position correction mechanism 32, and winding the three-winding mechanism A three times are performed simultaneously with the movement of guiding the sewing material C to the sewing section of the sewing machine 1. It is done in the form of a progression.

Next, when the workpiece C is guided to the sewing section of the sewing machine 1, the movement of the workpiece mounting mechanism 3 is stopped by a sensor (not shown), and the presser foot 70 and forced feed roller 8 of the sewing machine 1 are moved downward. At the same time, the sewing machine 1 is driven to sew the material C to be sewn. When the set hand movement counter number is reached, the three-winding mechanism 3
The lapper guide 41 of No. 4 escapes from the sewing material C and returns to its original position, and from this escape, the stitches continue to move for the set counter number to finish sewing the sewing material C. At the same time as the sewing machine 1 stops driving, the sewing machine 1 automatically starts sewing. The upper thread and lower thread are cut by the thread cutting mechanism, and the presser foot 70 and forced feed roller 8 move upward. In addition,
During the sewing period, the traveling position correction mechanism 32 is constantly operated to correct deviations and ensure that the needle drop position of the sewing product is at a regular position.

Next, the sewn article attachment mechanism 3 moves from the sewing machine 1 side to its original return position, and at the same time as it stops moving at this return position, the movable machine frame 13 returns to the fixed machine frame 10 side, and the sewn article C is removed. become. This state becomes the next set state of the annular cloth A.

By repeating the above operations, it is possible to successively sew a product having an annular rubber.

Therefore, in this embodiment, the sewn article attachment mechanism 3
The remaining work process, that is, the process of attaching the annular fabric A to the rubber hooking mechanism 6, and the process of removing the completed sewing product from the sewing product attachment mechanism 3, is enough to complete the process. It is possible to automate a series of steps including the work process of winding the annular rubber B around the edge of the fabric, the industrial process of sewing the rolled-up part in this rolled-up state, and the cutting process of the sewing thread at the end of sewing. Therefore, compared to when this type of sewing is done manually, the labor and difficulty of each task can be eliminated at once, improving the workability of this type of sewing and improving the quality of sewn products. Improved sewing machine operating rate can be achieved.

In addition, in the above embodiment, a case has been described in which a sewing product is sewn in a three-wrap state, but the present invention is not limited to this, and it is also possible to sew a two-wrap product without activating the three-wrap mechanism. .

Further, in the above embodiments, a wide annular rubber is used, but the present invention is not limited to this, and a plurality of narrow annular rubbers may be used.

(Effects of the Invention) As explained above, according to the double winding device of the present invention, the cloth edge of the circular cloth is wound twice around the circular rubber in a work process that requires skill, that is, before sewing. By automating the work process, it is possible to save time and improve work efficiency, and at once eliminate the difficulty of work that required skill and was nerve-wracking while paying attention to the work. Moreover, the finished product can be finished with a good appearance. Moreover, in the present invention, by distributing and arranging the plurality of support rods that support the annular cloth into a fixed machine frame and a movable machine frame that can move back and forth relative to the fixed machine frame, it is possible to handle the annular fabrics with different circumferences. It is also possible to support the cloth in a predetermined manner and to ensure that the end edge of the cloth is automatically rolled up, thereby expanding the range of application of the two-way winding device.

[Brief explanation of the drawing]

1 to 13 show one embodiment of the present invention, FIG. 1 is an overall external view showing the embodiment device with some parts omitted, FIG. 2 is a schematic perspective view showing the operation of each mechanism, and FIG. Fig. 3 is a perspective view of the operating part of the traveling position correction mechanism, Fig. 4 is a perspective view of the three-winding mechanism, Fig. 5 is a perspective view showing the rubber hooking mechanism partially omitted, and Fig. 6 is the two-winding mechanism. FIG. 7 is a perspective view showing the gripping means of the mechanism, FIG. 7 is a perspective view partially omitting the two-winding mechanism, and FIGS. 8 to 13 are schematic perspective views showing each operating state in sequence. 3...Sewn article mounting mechanism, 6...Rubber hooking mechanism,
7...Rubber hanging arm, 10...Fixing machine frame, 13
... Movable machine frame, 14, 15, 16, 17 ... Latching rod, 100 ... Two-winding mechanism, 101 ... Gripping means, 200 ... Moving means, A ... Annular cloth, B ......
circular rubber.

Claims (1)

[Claims] 1. It is equipped with a plurality of hanging rods arranged in a fixed machine frame and a movable machine frame that can be moved back and forth relative to the fixed machine frame, and these hanging rods support and tension the annular cloth from its inner circumferential side. A sewn article attachment mechanism configured to allow
A plurality of rubber latching arms are arranged radially around the latching rod group to latch and hold the annular rubber; A rubber retaining mechanism configured to allow the rubber to be fitted and attached from the outside in an elastic state; and a gripping means for elastically gripping the end of the annular cloth to which the annular rubber is fitted with a weak force due to the elastic force of the annular rubber, the annular cloth. A two-winding mechanism arranged in multiple pieces along the opening at the edge of the cloth,
It is characterized by comprising a moving means for relatively moving the sewn article mounting mechanism and the two-winding mechanism so that the cloth end side of the annular cloth elastically gripped by the gripping means of the two-winding mechanism is wound back onto the annular rubber. Two winding devices.