JP2001046764A - Bag sewing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide bag sewing device of high productivity which can be continuously operated. SOLUTION: This bag sewing device comprises a carriage 6 movable on a base 1 right and left (in X-directions), a lift base 10 movable on the carriage 6 up and down (in Z-directions), a slide base 14 movable on the lift base 10 inclined (in Y-directions), and a rotary support base 16 rotating R on the slide base 14, and the rotary support base 16 is provided with a jig bearing base 21 which is rotatable, a work presser 28 which is movable, a drive sprocket 23, and a motor 24. An R-rotary duct 26 which cooperates with the sprocket 23 is provided on the slide base 14. A temporarily locked bag cloth 30 is set on a jig 31 to be held by the jig bearing base 21 and the work presser 28, it is moved and rotated to decide sewing positions in respective sides, and it is sewn in order. Flaps are disposed at an interval on the jig 31, the flaps are protruded to provide tension to each side of the bag cloth 30, they are retracted inward before a needle passes, and they are protruded again after the needle passes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing apparatus for bags, particularly large cloth bags.

[0002]

2. Description of the Related Art To sew a cloth bag, the cloth is cut, sewn and the like is sewn. Then, the sewing position is adjusted, the cloth is set directly on the sewing machine, and the needle of the sewing machine is moved. It is common to sew in a bag shape by moving one side. The same is true for large cloth bags, for example,
In sewing a wool pack for storing and transporting cut wool, one long piece of cloth is cut and sewn to the bottom and two sides of the bag, and the other two sides. The two short fabrics (side fabrics) that have been cut and sewn are set directly on the sewing machine in such a manner that the sewing positions are sewn. For example, by moving the fabric, firstly sew one side fabric, and then set The other side cloth was stitched by changing the position.

[0003]

As described above, when sewing a cloth bag such as a wool pack, the cloth is set directly on the sewing machine according to the conventional method, and the sewing operation is stopped while the cloth is set. For example, in the case of a three-dimensional bag in which side cloths are sewn on two sides, after sewing one side cloth, the cloth is temporarily removed to sew the other side, and the cloth is repositioned and set again. The sewing machine has to be stopped, and the sewing operation has to be stopped during that time. For example, it takes a long time to stop the sewing machine, and therefore, it has been difficult to improve the productivity.

Therefore, a bag sewing apparatus for suturing a side cloth is provided.
The challenge is to achieve continuous operation and high productivity.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a cloth sewing apparatus is configured to set a work on a jig detachable from the apparatus main body and supply the work to the apparatus main body together with the jig, and perform a sewing operation. The next work can be set on another jig while the work is finished, and the sewn work can be taken out together with the jig and replaced with the next work. is there.

That is, the bag sewing apparatus according to claim 1 is
The bag fabric cut and sewn and temporarily fastened in the vicinity of the sewing position is supported on the apparatus body by a detachable jig, and the bag fabric is supplied to the apparatus body together with the jig, positioned and sent in a predetermined direction. The first side of the bag fabric is sewn, and the jig is moved and turned to change the position and sequentially sew the other side.

In this case, the cloth is cut to a predetermined size in the previous step, underlay sewing such as fraying is performed, and one bag of cloth is temporarily fixed near the sewing position. Temporary fastening is performed by welding or the like. For example, in the case of sewing a wool pack, one long piece of cloth cut and sewn to the bottom and two sides of the bag and the other two sides are used. The two short fabrics (side fabrics) that have been cut and sewn in such a manner are temporarily fixed, for example, by point welding along the sewing positions. In this way, the bag fabric that has been shaped into a bag and temporarily fixed is set in a jig. Then, the jig is set in the apparatus main body, the jig is sent in a predetermined direction, and the first side of the bag fabric is sewn,
Further, the apparatus main body and the sewing machine are controlled such that the position is changed by moving and turning the jig together, and the other side is sequentially sewn. By configuring the cloth sewing apparatus in this way, the bag cloth as the next work can be set in another jig while the apparatus is operating, the sewn work is taken out together with the jig, and the next work is set. It can be operated continuously by exchanging the jig.

A bag sewing apparatus according to a second aspect of the present invention is the bag sewing apparatus according to the first aspect, wherein the jig projects from the inside toward each side of the bag cloth to be sewn and the flap can be retracted in the sewing direction. A plurality of the flaps are arranged on each side at an interval, and the flaps are protruded to give tension to each side of the bag fabric to be sewn.As the sewing progresses, the flaps are sequentially inward immediately before the sewing machine needle passes. The retracted flap is configured to project again immediately after the sewing needle passes. In this case, with the temporarily fixed bag fabric set in a jig and set in a jig, with the flaps provided with tension suitable for sewing on each side, pull the flaps when the sewing machine needle comes in and proceed with sewing Can be.

A bag sewing apparatus according to a third aspect of the present invention is the bag sewing apparatus according to the second aspect, wherein the sewing is performed until one of a plurality of flaps on each of the sides passes through a sewing machine needle. The protruding position is set to two steps so that the protruding position protrudes to a position where the temporary fastening portion near the position is locked, and protrudes to the inside of the seam when the sewing needle protrudes again after passing. In this case, with the temporarily fixed bag cloth set in the jig, one flap is greatly protruded on each side of the bag cloth to lock the temporary fixing portion,
The bag fabric can be prevented from being displaced with respect to the jig, and the sewn portion can be supported from the inside to provide tension suitable for suturing the subsequent portion.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show the configuration of a sewing apparatus according to an example of the embodiment, and FIGS. 4 to 6 show the configuration of a jig. Also,
FIG. 7 shows the temporarily fixed state and the stitched state of the cloth, and FIGS.
Reference numeral 12 denotes each step of the suturing operation.

The sewing apparatus shown in FIGS. 1 to 3 is for performing side cloth sewing in the final step of a wool pack sewing line, has a horizontally long base 1, and has a central part rear side of the base 1. A support table 2 is provided upright, a sewing machine 3 is installed on the support table 2, and a motor 4 for driving the sewing machine is installed.

A pair of rails 5A, 5B are laid on the upper surface of the base 1 in the left-right direction, and a carriage 6 is mounted on the rails 5A, 5B. A motor 7 for driving the carriage is installed at one end of the base 1. A horizontal screw rod 8 is connected to the motor 7, and the horizontal screw rod 8 is driven to rotate by the motor 7 so that the carriage 6 moves left and right (X). The horizontal screw rod 8 is screwed and connected to the screw connection part of the carriage 6 so as to move in the direction (direction).

A support base 9 is erected on the back side of the carriage 6,
A lift table 10 is mounted on the support table 9 so as to be vertically movable. And the motor 11 is installed on the upper part of the support stand 9,
A vertical screw rod 12 is connected to the motor 11, and the motor 11 drives the vertical screw rod 12 to rotate.
The vertical screw rod 12 is screwed and connected to the screw connection part of the lift base 10 so that the 10 moves up and down (Z direction).

The lift table 10 has a front surface inclined so as to extend backward at an angle of about 30 degrees with respect to the vertical. The inclined front surface is provided with a pair of rails 13A and 13B in the inclined direction. I have. And the rail 13 on the front of the lift base 10
A slide table 14 is arranged movably in the above-described inclined direction (Y direction) along A and 13B, and a turning support table 16 is supported by a support shaft 15 erected on the slide table 14. Slide stand
14 is driven by a motor 18 via a ball screw shaft 17.

The turning support base 16 is an elongated frame, and has a jig receiving base 21 at one end which can be tilted by a cylinder 19 and can be rotated by a motor 20, and a balance weight at the other end.
The balance weight 22 is supported by the support shaft 15 on the slide base 14 at a position near the center and the balance weight 22. Further, the turning support base 16 has a sprocket 23 for turning driving at the center and on the back side near the jig receiving base 21, and a motor 24 for driving the sprocket 23 is provided on the front side.
Then, when the sprocket 23 on the back of the turning support base 16 is driven by the motor 23 and rotates on the slide base 14,
An R turning duct 26 having a guide chain 25 for turning (turning) the turning support base 16 in cooperation with the sprocket 23 is attached.

A work holder 28 is provided on the turning support 16 so as to be movable in the longitudinal direction of the turning support 16 along a guide rail 27 on a side opposite to the jig receiving stand 20 with the support shaft 15 interposed therebetween. The work holder 28 can be mounted on a guide rail.
A cylinder 29 that moves along 27 is provided.

A sewing apparatus (apparatus main body) having such a configuration is arranged on a wool pack sewing line. Then, the bag cloth 30 cut, sewn and temporarily fastened in the previous process is set and supplied to the jig 31 and the jig receiving stand 21 is provided.
And the workpiece presser 28, and sewn by a sewing operation described later.

As shown in FIGS. 4 to 6, the jig 31 is formed in a substantially rectangular jig base 31a with wheels. Jig body
The jig body 31b is covered with the temporarily fixed bag cloth 30 for the wool pack, and the slack side of the bag cloth 30 is inserted into the vertical slit formed at the center of the folded two sides. It is configured to be set.

The bag cloth 30 is made of two kinds of long and short cloths, which are obtained by cutting a roll of cloth, folding the edges of the cloth, and fraying (understitching) the cloth in a pre-process. After that, one piece of long cloth 30a serving as the bottom and two sides of the bag and two short cloths (side cloths) 30b serving as the other two sides are combined with each other as shown in FIG. First, as shown in a)
At several places including the vicinity of both ends along the stitching positions of the bottom two sides, they are temporarily fixed by point welding, and then the bag cloth 30 is placed upside down on the jig body 31b, as shown in FIG. 7 (b). Are temporarily fixed at several places by point welding. In the figure, the + mark indicates a temporary fixing portion formed by spot welding. In this way, the bag is shaped and temporarily fastened. The position of the temporary fixing is preferably adjusted to the position of flaps 33A, 33B, 33C, 33D described later.

The jig table 31a has one end on one side of the lower surface, and a jig receiving base on one side of the lower surface along one long side of the jig body 31b.
An air / electricity supply connector 32B is provided which is connected to the air / electricity supply connector 32A on the 21 side. In the jig body 31b, four corners at the upper end, two places on each side of two parallel upper edges, and several places on each side edge (five places in the example in the figure)
Flaps 33A, 33B, 33 that can be freely protruded and retracted from the inside toward each side of the covered bag fabric 30 to be sewn.
C and 33D are provided, each of which is connected to an air cylinder (not shown) arranged inside the jig body 31b. Of the flaps 33A, 33B, 33C and 33D, the flap 33A provided at the upper four corners is provided with a notch at the tip to escape the temporary fixing portion, and the projecting position is set in two steps, large and small. In addition, any flaps on the four side edges (flap 33C provided second from the top in the example in the figure) are also provided with cutouts at the tips to escape the temporary fixing portions, and the protruding positions are set to two large and small steps It may be done. Further, the lowermost flaps 33D of the four side edges are not cut out, and the protruding position is set to be the same as the second stage where the amount of protrusion of the flap 33C at each one of the four side edges is large. The other flaps 33B on the side edge and the two flaps 33B on the two upper edges have no notches, and the protruding position is the first stage where the amount of protrusion of the flap 33C on each of the four side edges is small. It is the same setting as.

A fabric stopper 35 having brush-like hairs for holding the inserted fabric is attached to a vertical slit at the center of the two folded sides of the jig body 31b.

At the center of the upper surface of the jig body 31b, a turning support
A pivot portion 36 is provided, which is rotatably supported by the work retainer 28 on the cloth 16 with the cloth 33 interposed therebetween. Also, jig stand
Although not shown in the figure on the lower surface of the jig 31, when the jig 31 is set on the jig receiving pedestal 21, a plurality of positionings for positioning and fixing with claws projecting from the upper surface of the jig receiving pedestal 21. Holes are provided.

The jig body 31b is covered with the bag cloth 30 temporarily fixed as described above (the state shown in FIG. 7 (b)) upside down. At this time, the flaps 33A, 33B, 33C , 33
D is retracted to the evacuation position. In this state, the hem at the four side edges of the fabric is clipped to each lowermost flap 33.
D is pinched. In addition, the slack side of the bag cloth 30 is inserted into the cloth stopper 35 of the vertical slit of the jig body 31b. Thus, the bag fabric 30 is set on the jig 31. This operation is performed before the jig 31 is set on the jig receiving base 21 of the apparatus main body.

The jig 31 on which the bag fabric 30 is set in this way
Is transferred onto the jig receiving table 21 which is in a horizontal posture at the lowest position, and is positioned at a predetermined position. When the positioning is completed, each flap 33A, 33B, 33C, 33D
It projects to the state shown in FIGS. At this time, the flap 33A at the upper four corners and the flap 33C having a cutout at each one of the four side edges protrude to the second protruding position where the protruding amount is large, and the lowermost flaps 33D at the four side edges are provided. Also protrudes to the same protruding position, and the other flaps 33B on the four side edges and the upper edge protrude to a unique protruding position having a smaller protruding amount. At this time, the flaps 33A at the upper four corners
Supports the four corners of the bottom of the bag fabric 30 while escaping the temporary fastening portion, and has a notch at each one of four side edges.
Prevents the setting of the bag cloth 30 by locking the temporary fixing portion. In the figure, the + mark is a temporary fixing portion. When the bag fabric 30 is set together with the jig 31 in the apparatus main body in this way, the operation of the sewing apparatus is started, and the side cloth sewing operation is started.

The side cloth suturing operation is performed in the following procedure (steps 1 to 36). 8 to 12 schematically show operations of steps 1 to 36. In the figure, the numbers in the columns correspond to steps 1 to 36, and the column numbers correspond to the step numbers.

(Step 1) The jig 31 on which the bag cloth 30 is set is pushed by hand and set at a predetermined position on the jig receiving base 21. Then, the position and orientation of the jig 31 are detected by the sensor. Press the operation switch in this state. Then, the claw of the jig receiving base 21 is raised to fix the jig 31, and then the air / electric supply connector 32 </ b> A of the jig receiving base 21 moves forward to the air / electric supply connector 32 </ b> B of the jig 31. Be linked.

(Step 2) When the sensor detects that the air / electricity supply connector 32A of the jig receiving base 21 is connected to the air / electricity supply connector 32B of the jig 31, the jig receiving base 21 is turned on. Is tilted and the workpiece is held down.
28 moves forward (down) and presses the upper surface of the jig 31.

(Step 3) At substantially the same time as the inclination of the jig receiving base 21 and the advance of the work holder 28, the bogie 6 rotates rightward in the X direction while the turning support base 16 makes a right turn and makes a right turn. It turns to the sewing start position and stops.

(Step 4) The slide base 14 is normally rotated upward in the Y direction and the support base 9 is normally rotated upward in the Z direction. Go into the needle position. Then, the fabric press of the sewing machine 3 moves forward and presses the fabric.

(Step 5) With the fabric presser holding the fabric, the trolley 6 moves in the reverse direction to the left in the X direction, and at the same time, the support 9 moves in the forward direction in the Z direction, during which the sewing machine 3 operates. In FIG. 7 (c), a V-shaped sewing of a fraying prevention at the sewing start position indicated by A is started. Then, as shown in FIG.

(Step 6) Next, while the fabric presser is holding the fabric, the trolley 6 continues to reversely move to the left in the X direction, the support base 9 turns to reversely move downward in the Z direction, and the sewing machine 3 operates. By continuing, sewing is performed diagonally outward from the direction of FIG.

(Step 7) The fabric presser of the sewing machine 3 retreats, and the thread is cut at the position beyond the V-shape by heat cutting in cooperation with a high-temperature heat cutter and a relatively low-temperature presser.

(Step 8) The bogie 6 is normally rotated to the right in the X direction, and stops when the V-shaped position returns to just below the sewing machine.

(Step 9) When the support 9 moves forward in the Z direction and the air blow is activated,
The fabric enters the needle position of sewing machine 3. And sewing machine 3
The dough holder moves forward and holds the dough with low pressure.

(Step 10) While the fabric presser is holding the fabric, the trolley 6 moves in the reverse direction to the left in the X direction, and at the same time, the support base 9 moves in the forward direction in the Z direction, during which the sewing machine 3 operates. As shown in FIG. 7 (d), sewing is performed diagonally at a gentle angle so as to intersect the V-shaped seam at two points.

(Step 11) While the fabric presser is holding the fabric, only the trolley 6 continues to reversely move to the left in the X direction, the sewing machine 3 operates, and the vertical sewing starts from FIG. 7D.

(Step 12) While the needle of the sewing machine 3 is still passing, the fabric holder is retracted. Then, while the bogie 6 rotates forward to the right in the X direction, the turning support base 16 turns 90 degrees counterclockwise, and during this time, the slide table 14 once moves backward and downward in the Y direction and then upwards in the Y direction. To move forward.

(Step 13) Next, the cloth presser presses the cloth, only the carriage 6 moves backward in the X direction to the left, and the sewing machine 3 operates to perform bottom sewing.

(Step 14) The fabric holder is retracted, and the trolley 6 is rotated rightward in the X direction, while the turning support 16 is turned 90 degrees counterclockwise while the slide base 14 is temporarily tilted downward in the Y direction. Side, and then forwardly and obliquely upward in the Y direction.

(Step 15) Next, the cloth presser presses the cloth, only the carriage 6 moves in the reverse direction to the left in the X direction, the sewing machine 3 operates, and the sewing proceeds vertically toward the sewing end position.

(Step 16) The sewing is advanced to the sewing end position indicated by B in FIG. 7C, and when the sewing machine reaches the position shown in FIG.
Moves in the reverse direction to the left in the X direction, and at the same time, the support base 9 moves in the forward direction to the lower side in the Z direction. Exit.

(Step 17) When the bogie 6 makes a forward rotation to the right in the X direction and the sewn position returns to just below the sewing machine, it stops.

(Step 18) The heat cut by the cooperation of the high-temperature heat cutter and the relatively low-temperature holder
Cut the thread at the end of the position where the sewing was removed.

(Step 19) The bogie 6 is normally rotated to the right in the X direction, and stops when the area where the diagonal sewing has been started returns to just below the sewing machine.

(Step 20) When the support 9 moves forward in the Z direction and the air blow is activated,
The fabric enters the needle position of sewing machine 3. And sewing machine 3
The dough holder moves forward and holds the dough.

(Step 21) While the fabric presser is holding the fabric, the trolley 6 moves in the reverse direction to the left in the X direction, and at the same time, the support base 9 moves in the forward direction in the Z direction, and the sewing machine 3 operates.
The sewing machine enters the V-shaped sewing at the end of sewing to prevent fraying. Then, as shown in FIG.

(Step 22) Next, while the fabric presser is holding the fabric, the trolley 6 continues to move in the reverse direction to the left in the X direction, the support 9 turns to move in the reverse direction to the lower side in the Z direction, and the sewing machine 3 operates. By continuing, from (d) of FIG.
Sew diagonally outward to 10 and exit the V-shape.

(Step 23) The fabric holder of the sewing machine 3 retreats, and the position 10 where the V-shape is removed by the heat cut by the cooperation of the high-temperature heat cutter and the relatively low-temperature holder.
Cut the thread at the tip of

(Step 24) While the slide base 14 moves backward in the diagonally downward direction in the Y direction, the turning support base 16 turns 90 degrees clockwise.

(Step 25) Next, the jig receiving stand 21 is
It rotates by 80 degrees and stops at the rotation position for sewing the side cloth on the back side of the bag cloth 30.

(Step 26) At substantially the same time as the rotation of the jig receiving table 21, the bogie 6 rotates rightward in the X direction while the swivel support 16 rotates clockwise and makes a right turn. It turns to the sewing start position and stops.

(Step 27) While the slide base 14 is normally rotated upward in the Y direction and the support base 9 is normally rotated upward in the Z direction, and the air blow is activated, the cloth is Go into the needle position. Then, the fabric press of the sewing machine 3 moves forward and presses the fabric.

(Step 28) The side cloth on the back side is sewn by the same operation as in steps 5 to 23. And step 24 and
The same operation as in step 25 is performed to return the jig support 21 to the initial rotation position.

(Step 29) The carriage 6 reversely moves leftward in the X direction, and the support 9 moves reversely downward in the Z direction.

(Step 30) Then, the jig receiving stand 21 returns to the horizontal position. Thereafter, the jig 31 is manually pushed to release the setting, the jig 31 is taken out from the jig receiving stand 21, and a jig on which new bag cloth is set is set.

Of the flaps 33A to 33D of the jig 31, the other flaps 33A and 33B except the lowermost flap 33D on the four sides.
And 33C sequentially retreat inward just before the sewing needle passes as the sewing proceeds, and protrude again immediately after the needle passes. The flap 33A at the upper four corners and the flap 33C having a cutout at each one of the four side edges protrude again to the first-stage protruding position where the protruding amount is small when the needle passes again after passing through the needle.

Although the embodiment applied to the side cloth stitching of the wool pack has been described above, the present invention is not limited to this, and can be widely applied to sewing of various three-dimensional bags and flat bags.

[0059]

As is clear from the description based on the above embodiment, according to the bag sewing apparatus of the present invention, the bag cloth which is the next work is set in another jig during the operation of the bag sewing apparatus. By taking out the sewn work together with the jig and replacing it with the jig on which the next work is set, continuous operation is possible, and productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a bag sewing device according to an embodiment of the present invention,

FIG. 2 is a front view of the bag sewing apparatus according to the embodiment, from which a swing support portion is removed.

FIG. 3 is a front view of a turning support portion of the bag sewing apparatus according to the embodiment;

FIG. 4 is a front view of a jig according to the embodiment,

FIG. 5 is a side view of the jig according to the embodiment,

FIG. 6 is a plan view of a jig according to the embodiment,

FIG. 7A is a plan view showing a state in which the side cloth of the bag cloth according to the embodiment is temporarily fastened at the bottom side edge, and FIG. 7B is a perspective view showing a state where the side cloth is temporarily fastened at the side side edge after the bottom side edge. , A perspective view (c) of a sewn state and an enlarged view (d) of a sewing start and sewing end portion,

FIG. 8 shows steps 1 to 1 of the side cloth suturing operation according to the embodiment.
4 is an explanatory diagram,

FIG. 9 shows steps 5 to 5 of the side cloth suturing operation according to the embodiment.
11 explanatory diagram,

FIG. 10: Step 12 of the side cloth suturing operation according to the embodiment.
Explanatory diagram of ~ 13,

FIG. 11 is a step 14 of the side cloth suturing operation according to the embodiment;
Explanatory diagram of ~ 23,

FIG. 12 is a step 24 of the side cloth suturing operation according to the embodiment;
FIG.

[Explanation of symbols]

 3 Sewing machine 6 Cart 10 Lift table 14 Slide table 16 Swivel support table 21 Jig receiving table 30 Bag fabric 31 Jig 33A ~ 33D Flap

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Futa Yano 190 Hikami, Tatsuno-cho, Tatsuno-shi, Hyogo Prefecture Inside the Far East Machinery Co., Ltd. (72) Inventor Yasuaki Matsui 190, Tatsuno-cho, Tatsuno-cho, Tatsuno-shi, Hyogo Far East Machines Co., Ltd. F-term (reference) 3B150 BA00 CC02 CC05 CE02 CE05 CE23 EB01 EB08 EB13

Claims (3)

[Claims] 1. A bag material cut and temporarily fixed is supported on a device body by a detachable jig, and the bag material is supplied to the device body together with the jig, positioned and sent in a predetermined direction, and the bag material is sent in a predetermined direction. The sewing machine according to claim 1, wherein the first side is sewn, and the jig is moved and turned to change the position and sequentially sew the other side. 2. The jig is provided with a plurality of flaps protruding and retractable from the inside toward the respective sides of the bag cloth to be sewn at intervals from each other in the sewing direction. By projecting, the sides of the bag cloth to be sewn are provided with tension, and as the sewing proceeds, the flaps are sequentially retracted inward immediately before the sewing needle passes, and the retracted flap is appropriately protruded immediately after the sewing needle passes. The bag sewing apparatus according to claim 1, which is configured as described above. 3. One of the plurality of flaps for each side protrudes to a position where the temporary fastening portion near the sewing position is locked until the sewing needle passes, and again after the sewing needle passes. 3. The bag sewing apparatus according to claim 2, wherein when protruding, the protruding position is set in two steps so as to protrude to the inside of the seam.