JPS6019274B2 - An automatic device that feeds and inserts gusset fabric into the inner thighs of stocking fabric. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic device for supplying and inserting gusseted fabric into the inner thigh of stocking fabric. This invention relates to a device that automatically feeds and inserts fabric.

In recent years, so-called pantyhose, which are a combination of stockings and panties, have been highly prized for their practicality when worn, excellent fit, and the effect that wearing them can improve the appearance of customers.

There are two types of pantyhose, one without a gusset and one with a gusset, and this invention relates to the sewing of the latter.

By the way, when it comes to pantyhose with gusset, there are two
A roughly diamond-shaped gusset is sewn to the inner thigh of the stocking fabric, which is made up of the book's cylindrical legs.

The present inventor has already developed a method for automatically suturing the gusset as described above.

That is, according to this method, a pair of cylindrical legs are held in an overlapping manner to hold the stocking fabric, and the cut edge of the stocking fabric is expanded to the inner thigh area and exposed to the outside. A gusset fabric cut into a roughly diamond shape is supplied and inserted into the cut edge, and then sewn.

The above series of operations is carried out while a plurality of carriers, each holding one piece of stocking fabric, periodically and intermittently travel between stations defined at intervals on a predetermined endless path. , will be completed.

By the way, the automatic feeding and insertion of the gusset fabric is carried out at the third station through cooperation between the gusset fabric supply mechanism and the insertion mechanism.

Since each carrier reaches the third station one after another, this feeding and insertion operation also needs to be carried out repeatedly and accurately one after another. An object of the present invention is to provide an apparatus that accurately and completely automatically performs the repeated feeding and insertion of gusset fabric as described above.

That is, according to the present invention, a gusset band that is intermittently pulled out from a reel that is a supply source is shaped into a diamond shape by a cutter, and then divided into individual gusset fabrics, and each of the gusset fabrics is folded in half by the function of an insertion mechanism. In this state, it is supplied and inserted into the cut edge of the inner thigh of the stocking fabric.

A more detailed explanation will be given below with reference to the accompanying drawings.

Details of the gusset fabric stitching method The gusset fabric stitching method to which this invention is applied will be explained step by step with reference to FIGS. 1A to 1F.

As shown in FIG. 1A, the stocking fabric has a pair of cylindrical legs 1 and 2, and these joint legs 1 and 2 are first connected to lines 3 and 4 as shown in FIG. 1B. The stocking fabric is cut along the line 5 extending between the above lines 3 and 4 while maintaining this cough state.

After cutting, the open ends of the cylinder legs 1, 2 are opened laterally in a direction perpendicular to the cough lines 3, 4, the cut parts are pulled apart to form an opening defined by the cut edges, and the openings are preliminarily inserted into the openings. The gusset fabric 30 formed into a diamond shape is fed and inserted in a folded state as shown in FIG. 1C.

Thereafter, the edge of the gusset fabric is sewn to the cut edge by a two-step sewing process parallel to the cough lines 3 and 4.
To give an example of the suturing procedure, first, as shown in Figure 10, a pair of cut greens on one side of the closed opening of the inner thigh, one cut green on one side of the gusset fabric and one facing the sekiguchi, and a pair of cut greens on the open side. The pair of cut edges on the other side are sutured along the suture line 6 in this order.

Next, as shown in FIG. 1E, the other edge of the gusseted fabric and the other cut edge facing the opening are sewn together to obtain gusseted pantyhose 10 as shown in FIG. 1F. However, the steps D and E in FIG. 1 may be reversed.

By the way, as is clear from the diagram, pantyhose with gussets have gussets on the inner thighs, so
It is extremely difficult to sew the gusset fabric under the conditions shown in Figures D and E.

Therefore, during sewing, the V-shaped cut green is held and spread outward beyond the straight line to expose the cut green to the outside of the stocking fabric. The gusset fabric folded in half is fed and inserted into this exposed cut green, and then, if necessary, the folded cut green is reversed from inward to outward, and the stocking fabric is sewn to the gusset fabric. be. Outline of Automatic Sewing System An example of an automatic sewing system to which the present invention is applied will be outlined with reference to FIGS. 2, 3 and 7.

On a fixed guide rail 106 provided endlessly on the floor, a plurality of elongated annular carriers 107 are arranged at equal intervals to run around the fixed guide rail 106.

A pair of cough holding sections 201 are installed on each carrier 107. The number of carriers 107 and cough support members 201 may be determined as appropriate depending on practical conditions. Seven work stations 1 to 1 are defined along the guide rail 106, and the cough holding member 201 intermittently rotates counterclockwise (arrow a) in the figure together with the carrier 107 to perform 7 work stations 1 to 1 to blood. located sequentially.

At the first station 1, a stocking material (not shown) is attached to the cough support member 201, and a cough is performed using the stocking material.

Between the 2nd and 3rd stations,
07, the stocking fabric is cut by the rotatable cutting mechanism 301, and the cough relief part 201 extends further outward from the straight line, exposing the cut green of the stocking fabric to the outside.

The third station is provided with gusset fabric supply and insertion mechanisms 401, 501 according to the present invention.

That is, the supply mechanism 401 supplies the diamond-shaped gusset fabric 30 to the cut edge exposed to the outside, but at this time, the insertion mechanism 501 causes the gusset fabric 30 to be folded in half, and the gusset fabric 30 that has been folded in half is The lower edge of the fabric and the lower cut edge are bent and held on the lower surface of the cough holding part 201. At the third and fourth stations m and W, in this example, the cough support member 201 is rotated 180 degrees to turn the cut edge of the stocking material adjacent to it from inward to outward, and the stocking material and gusset are Position the seam line of the fabric toward the sewing machine.

Between the 4th and 5th stations W and V, the first sewing machine 60
1, the upper cut edge and the upper twill portion of the gusset fabric are sewn together.

A folding mechanism 701 is provided at the fifth station V, and the sewn upper cut green and the upper green portion of the gusset fabric are bent and fixed upward.

Next, the lower cut green and the lower edge of the gusset fabric are released from the lower surface of the cough support member 201 and sewn together by the second sewing machine 801. Between the skin at the 6th and 7th stations,
The cough support member 201 returns from the open state to the original parallel state, and the suction type removal mechanism 901 removes the pantyhose from the cough support member 201 at the seventh station.

Between the 7th and 1st stations W, 1, the support member 201
rotates 180o and returns to the original position.

This completes one cycle of sewing work. Details of the Gusset Fabric Supply and Insertion Mechanism As previously mentioned, the third work station m shown in FIG. 3 is provided with a gusset fabric supply and insertion mechanism 401,501.

A sheet of gusseted fabric 30 cut into a substantially diamond shape is temporarily sucked and held by the feeding machine base 401, and then transferred to the insertion mechanism 50.
1, it is inserted into the cut edge that is folded in half and exposed to the outside.

At the same time, due to the action of the insertion mechanism 501, it is held by the lower twill portion of the bi-folded gusset fabric and the flap on the lower surface of the lower cough support member 201. Details of both aircraft 401 and 501 are shown in Part 4.
, 5 and will be explained below.

The gusset fabric supply mechanism 401 has a supply reel 403 in which the gusset band 30' is wound into a roll.
The gusset strip 3' drawn out in the horizontal direction passes through the nib between the driving draw-out roll 405 and the driven draw-out roll 406, and then is sent to the cutting section 420 in the vertical direction.

The supply reel 403 is mounted on a support 410 on a base 550, and the driving pull-out roll 405 is intermittently rotated only in one direction, that is, in the gusset pull-out direction.

That is, a one-rotation motor 411 is installed on the support stand 410, and one rotation of the motor 411 causes the pulleys 407, 40 to rotate.
8 and a belt 409, the drive roll 405 is rotated in the direction of arrow D6 in the figure, and each time a gusset band 3' having a length equal to the dimension of one piece of gusset fabric 30 is rotated on the reel 403.
Pull it out and stand still for a while. During this stationary period, the cutting section 420 operates to cut and cut one piece of gusset fabric 30 from the gusset band 30'. A pair of left and right brackets 551 are fixed to the upper surface of the front end of the base 550, and an immovable cutter 421 is fixed to these brackets 551.

A movable cutter 422 is provided facing the immovable cutter 421 and in close contact therewith. As mentioned above, the vertically guided gusset band 30' is connected to the rain cutter 42.
It passes between 1,422 and 1,422. On the side of the movable cutter 422 facing the immovable cutter 421, there is a pair of triangular knives 422a (see FIG. 6) on the left and right on the upper side, and a linear knife 422b extending over the entire width on the lower side. are formed respectively. Correspondingly, on the side of the immovable cutter 421 facing the movable force cutter 422, a triangular concave notch 421a is provided at a portion facing the knife 422a, and a linear notch 421b is provided at a portion facing the knife 422b. each formed.

Therefore, when both cutters 421 and 422 are brought into close contact, the knives 421a and 421b are aligned with the notches 422a and 422b, respectively. A pair of upper and lower sliding shafts 425 are horizontally fixed to the opposite surface of the movable cutter 422, and these sliding shafts 425 can be attached to bosses 426a provided on the vertical wall 426 of the support base 410. It is injected.

A pneumatic cylinder 428 is provided at the vertical center of the vertical wall 426, and its piston rod 428a
passes through the vertical wall 426 and is fixed to the back surface of the movable cutter 4. A collar 431 is fixed to the free mechanism of the sliding shaft 425, and a compression spring 432 is interposed between each collar 431 and the vertical wall 426 by winding the sliding shaft 125. Both cutters 421 and 422 are normally kept separated by the elastic force of the spring 432.
The pneumatic cylinder 428 operates to move the piston rod 42
When the moving cutter 8a moves forward, the movable cutter 422 is moved by the compression spring 43.
The gusset band 30' is placed in close contact with the immovable cutter 421 against the elastic force of 2, and as shown in FIG.
Both greens are cut into triangular shapes by a and cut along the diagonal of the triangular notch by a straight knife 422b, yielding one sheet of approximately diamond-shaped gusset fabric 30.

The thus obtained gusset fabric 3 rivers, Fudo cutter 421
The gusset fabric insertion mechanism 501 is vertically gripped by suction on one side of a pair of vertical members 522 (the fifth
(see figure).

For this purpose, the vertical member 522 is formed in a hollow shape, has a large number of small suction holes on one side, and is connected to a suitable suction source. A suction nozzle 441 is provided near the immovable cutter 421 to suck the cut pieces of the gusset band 30' and discharge them out of the system. Next, the gusset fabric insertion mechanism 501
I will explain about it.

This gusset fabric insertion mechanism 501 is installed on a base 550. That is, a fan-shaped insertion plate 505 is movably attached to a pair of left and right horizontal guide rods 504 fixed to the base 550', and a gusset material gripping needle 505 is attached to the tip of the fan-shaped insertion plate 505.
A is being discussed.

This insertion plate 505 moves back and forth along a guide rod 504 by the action of a pneumatic cylinder 503 attached to a base 550. The pneumatic cylinder 503 starts operating at the timing when a piece of gusset fabric 30 cut into a diamond shape by the gusset fabric supply mechanism 401 is vertically suctioned and held by the vertical member 552 .

Then, the insertion plate 505 moves forward, pushes the gusset fabric 30 on the vertical member 522, folds it in half, and inserts it into the opening defined by the cut edge of the stocking fabric held by the cough holding member 201. A mechanism is provided at one end of the base 550 to allow the flap of the lower cough plate to hold the lower edge and the lower cut edge of the bi-folded gusset fabric 30 inserted in this way.

That is, a pair of left and right plackets 551 are fixedly installed on the base 550, and the pair of vertical members 52 are disposed between them.
2 are arranged with a gap between them.

Furthermore, the rotating shaft 552 is held by the bracket 551,
The rotary solenoid 553 on the base 550
(Figure 4). A pair of left and right L-shaped pressers 654 are fixed to this rotating shaft 552, and each presser 55
A wear-resistant, high-friction member is attached to the tip of 4. When the rotary solenoid 553 operates, the presser 5
54 rotates to insert the upper edge of the gusset fabric 30 into the insertion plate 505.
Press it against the top surface of the material to adjust its shape and make suturing secure and easy in the next step.

A lower leaf spring moving member 562 is removably attached to the tip of the guide lock 604 described above, and the piston rod 56 of the pneumatic cylinder 561 fixed on the base 550
Connect the tip of 2a to this.

A pair of U-shaped small brackets 5633 are attached to the moving member 562.
, so as to correspond to the opening degree of the dovetail plate of the cough support member 201.
Each small bracket 563 has a small rotating shaft 5.
64 is pivotably mounted. These small rotating shafts 56
4 are connected by a universal joint 565. Each small rotation axis 5
A leaf spring 56 is fixed to 64 via an arm (not shown), and functions to press the lower twill portion of the gusset fabric and the lower cut edge. A lever bar 567 is fixed to the small rotating shaft 564 on one side, and a pneumatic cylinder 568 fixed to the moving member 562 is operatively connected to this bar. After the insertion plate 505 is inserted, the pneumatic cylinder 56
1 is activated, bringing the leaf spring 566 closer to the lower edge of the gusset fabric and the lower cut edge.

Next, the pneumatic cylinder 568 is started and rotates the lower twill part of the gusset fabric and the lower cutting green in an arc shape together with the leaf spring 566, and presses the flap of the lower cough plate of the dovetail support member 201. , let the flap grip the lower edge of the gusset fabric and the lower cut green. As described above, according to this invention,
The gusset band is intermittently pulled out from the supply IJ-ru, cut into a predetermined shape to form gusset fabric, and the gusset fabric is inserted in a bifold shape into an opening defined by the cut edge of the stocking fabric. A series of operations are performed completely automatically and reliably.

Furthermore, the gusset fabric and stocking fabric in the next process.
Prior to the sewing step, the lower twill part and lower cut green of the gusset fabric are automatically and reliably separated from the upper green part and lower cut edge of the gusset fabric to ensure the stitching in the next step. Make it easy.

[Brief explanation of the drawing]

FIGS. 1A to 1F are perspective views showing the procedure for sewing gusseted fabric using the apparatus of the present invention. FIG. 2 is a side view showing an example of an automatic stocking sewing device using the sewing machine of the present invention. Figure 3: Also a plan view. Fourth
Figure: A plan view showing an example of the device of the present invention. Figure 5; also a side view. FIG. 6: A front view showing the area around the cutting part. 7th
Figure: A perspective view showing the main parts of the device. 10... Pantyhose, 30... Gusset fabric, 30'... Gusset belt, 106...
Guide rail, 107... Carrier, 201... Holding member, 301... Cutting mechanism, 601... First sewing machine,
701... folding mechanism, 801... second sewing machine, 901
...Removal mechanism, 401... Gusset fabric supply mechanism, 403
...gusset band supply reel, 405,406...drawer roll, 410...support stand, 411...1 rotation motor, 420...cutting section, 421...immovable cutter, 4
22...Moving cutter, 422a...Triangular knife, 4
22b... Straight knife, 426... Vertical wall, 428... Pneumatic cylinder 432... Compression spring, 441... Suction nozzle, 501... Gusset fabric insertion mechanism, 503 Pneumatic cylinder, 504... Guide rod, 505... - Fan-shaped insertion plate, 522... Vertical section, 550... Base, 552
... Rotating shaft, 553 ... Rotary solenoid, 5
54... Presser, 561, 568... Pneumatic cylinder, 562... Lower plate spring moving member, 566... Lower plate spring. Figure 6 Figure 7 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. A gusset fabric supply mechanism 401 and a gusset fabric insertion mechanism that are constructed on a base 550 and cooperate with each other at a predetermined timing, facing one station on the movement path of the stocking fabric holding member 201. 501; The above-mentioned gusset fabric supply mechanism is arranged on the downstream side of the gusset band supply reel 403, and rotates intermittently,
Pull-out rolls 405 and 406 that rotate to pull out a gusset strip 30' having a length equivalent to one piece of gusset fabric from the reel; and a stationary cutter 421 having a cutting surface facing the movement path of the gusset strip on the downstream side of the rolls; A movable cutter 422 is provided facing the immovable cutter and has a pair of left and right triangular knives 422a and a straight knife 422b extending in the width direction on its cutting surface, and the movable cutter is always separated from the immovable cutter. and a drive mechanism 428 that brings a movable cutter into surface pressure contact with a stationary cutter at a predetermined timing to cut out a piece of diamond-shaped gusset fabric 30 from the gusset band; A gusset material insertion mechanism is provided facing the movement path of the gusset material on the downstream side of both cutters, and is provided facing a member 522 that suction-holds the cut gusset material in a flat state. and is driven at a predetermined timing to move in a direction perpendicular to the gusset fabric movement path, fold the gusset fabric on the member in half, and insert it into the opening defined by the cut edge of the stocking fabric on the gripping member. An automatic device for supplying and inserting gusset fabric into the inner thigh of stocking fabric, comprising: an insertion plate 505; 2 A pair of left and right pressers 554 are further driven at a predetermined timing and rotated to press the upper edge of the gusset fabric against the upper surface of the insertion plate 505; Claim 1 comprising a mechanism 561, 566, 568 for approaching the lower cut edge of the stocking fabric on the holding member and then pushing both into the flap of the lower bite plate of the holding member. Automatic equipment as described.