JP2020000384A - Sewing apparatus - Google Patents

Abstract

To eliminate the need for sewing by hand work in the sewing of an overlap part of trousers.SOLUTION: A sewing apparatus 10 includes: a frame 11 including a top plate 12; a first magazine 21 and a second magazine 22 for storing overlap cloth 110; a positioning table 41; a first gripper 31; a second gripper 32; a folding section 50 for double-folding the overlap cloth 110 placed at a first position P1 on the upper surface of the top plate 12 along a first folding line 110a extending in a longer direction, and for folding one end portion of the double-folded overlap cloth 110 along a second folding line 110b extending along the one end portion; a first sewing machine 13 for sewing a side edge portion 110c of the overlap cloth 110 double-folded by the folding section 50; and a second sewing machine 14 for sewing a folded portion 110d of the overlap cloth 110 folded by the folding section 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a sewing device that automates sewing of a part taken out of jeans.

  Conventionally, pants made by sewing denim fabric have been widely distributed as jeans. Normally, a material called a carry-out part made of another folded denim cloth, which is arranged along the direction in which the fastener extends so as to cover the fastener, is sewn on the front rear surface of the jeans.

  FIG. 1 is a diagram for explaining parts taken out of jeans. In the main part of the back surface on the front side of the jeans 100 shown in FIG. 1A, a take-out component 101 is arranged along the direction in which the fastener extends so as to cover the fastener. As shown in FIG. 1B, the take-out component 101 uses a take-out cloth 110 made of denim cloth having a substantially rectangular shape with one end slightly recessed from both sides toward the center, and extends in the longitudinal direction of the take-out cloth 110. 1C and the second folding line 110b extending along one end, as shown in FIG. 1C, the take-out cloth 110 is placed such that the front of the denim fabric is outside at the first folding line 110a. One end of the take-out cloth 110 is folded at the second folding line 110b, one side edge 110c of the folded-out take-up cloth 110 is overlock sewn, and the folded part 110d having one end woven is a final stitch. It is sewn.

  However, since the parts taken out of jeans are sewn manually by a sewing technician, a certain technique is required for the sewing technician, and the quality of the sewn out parts is not stable. In addition, since the sewer manually sewes the parts to be taken out, the sewable amount is limited.

  The present invention is proposed in view of the above-mentioned circumstances, and provides a sewing device for sewing a take-out cloth to a take-out component, which does not require a sewing operation by a manual sewing operation. The purpose is to:

  In order to solve the above-described problems, a sewing device according to the present invention is to sew a take-out cloth to a part to be taken out of pants, a pedestal having a top plate, attached to a side of the pedestal, and an upper portion having an opening. A take-out cloth storage section for stacking and carrying the take-out cloth, a positioning table provided on the gantry for placing and positioning the take-out cloth on the upper surface, and a take-out cloth stored in the take-out cloth storage section one by one. A first gripper that is gripped and taken out and placed on the positioning table, and a second gripper that grips the taken-out cloth placed and positioned on the positioning table and placed at the first position on the top plate, The take-out cloth placed at the first position is folded in two along a first folding line extending in the longitudinal direction, and one end of the folded-out cloth is folded at a second folding line extending along the one end. And it includes a writing folded portion, a first sewing machine to sew a side edge portion of the two-folded brought out cloth folded portion, and a second sewing machine to sew the folded portion of the take-out cloth folded about the fold section.

  The folding part is configured to press and hold one half of the take-out cloth placed at the first position and hold the half of the take-out cloth, and to overlap the half of the one side by lifting the other half of the take-out cloth. Plate that folds in half at the first fold line, a presser that presses and holds the side edge of the take-out cloth that has been folded in half on one half by the plate, a first presser plate, and And a folding plate for folding one end of the take-out cloth held by the presser at the second folding line. The first holding plate may include two layers of plates opposing each other with a gap therebetween. The thickness of the first holding plate may be optimized for folding the take-out cloth.

  The first sewing machine may have a function of performing overlock sewing on a side edge of the take-out cloth and sucking an empty ring at the start of sewing. In the second sewing machine, the folded portion of the take-out cloth may be lock-stitched. The sewing machine may further include a thread processing unit configured to cut the thread while sucking the thread from the folded cloth that has been lock-stitched by the second sewing machine.

  The positioning table has a reference surface that is in contact with the take-out cloth placed on the upper surface, a pressing claw that pushes the take-out cloth toward the reference plane, and a pair of opposing sets that width the take-out cloth parallel to the reference plane. It may include a width-shifting claw.

  A first feeder for receiving the take-out cloth from the first position, feeding the take-up cloth along the upper surface of the top plate by rotating it half a turn, and guiding sewing by the first sewing machine; and a take-out cloth from the first feeder. And a third feed unit for receiving the cloth taken out from the second feed unit and guiding the sewing by the second sewing machine. May be further included.

  The first gripper and the second gripper may be a needle gripper that grips the take-out cloth by inserting and removing a needle from the lower surface or a vacuum gripper that suctions the carry-out cloth by vacuum. The carry-out cloth storage unit may include a plurality of magazines for stacking and storing carry-out cloths.

  According to the present invention, there is no need for sewing work by a sewing worker, and there is no need to secure personnel for sewing work. Further, since the sewing of the brought-out part can be automated without the manual operation of the sewing work, the quality of the brought-out part can be stabilized, and the amount of sewing can be increased.

It is a figure explaining a take-out part of jeans. It is a front view of the sewing apparatus of this embodiment. It is a top view of the sewing apparatus of this Embodiment. It is a right side view of the sewing device of the present embodiment. FIG. 4 is a main part top view showing a main part of the top view of FIG. 3. It is a flowchart explaining a series of operation | movement in the sewing apparatus of this Embodiment. It is a top view which shows the change of the shape of take-out cloth. It is a flowchart explaining a series of operation | movement in the folding part of a sewing apparatus. It is a top view which shows the state which carried out the take-out cloth in the 1st position in the folding part. FIG. 6 is a top view showing a state where a half of one side of the take-out cloth is pressed by a first pressing plate in a folding section. It is a top view which shows the state which folded back the other half of the take-out cloth in the folding part with the folding board. It is a top view which shows the state which pressed the side edge part of the take-out cloth in the folding part with the presser. It is a top view which shows the state which folds the edge part of carry-out cloth with a folding board in a folding part. It is a top view which shows the state which pulled out the 1st press board and the folding board from the take-out cloth in the folding part.

  Hereinafter, a sewing device according to the present embodiment will be described in detail with reference to the drawings. The sewing device according to the present embodiment is intended to automate a process of sewing a part to be taken out of jeans, which are pants made of denim cloth, and a step of picking up a cloth of the taken-out cloth to a step of sewing the taken-out cloth. The present embodiment is not limited to this, and can also be applied to sewing of take-out parts other than denim cloth such as slacks.

  FIG. 2 is a front view of the sewing device according to the present embodiment. In the sewing apparatus 10 of the present embodiment, a top plate 12 having an upper surface extending in a substantially horizontal direction is supported by a gantry 11 at a predetermined height. The upper surface of the top plate 12 is formed smoothly so that the take-out cloth 110 can slide. On the upper surface of the top plate 12, a first sewing machine 13 for sewing the side edge portion 110c of the folded take-out cloth 110 and a second sewing machine 14 for sewing the folded portion 110d of the folded take-out cloth 110 are provided. Have been. An opening 12a is formed at a predetermined position of the top plate 12, and a container (not shown) for receiving the sewn take-out cloth 110 is provided immediately below the opening 12a. Further, a control panel 19 is mounted at a predetermined position on the front edge of the top plate 12.

  FIG. 3 is a top view of the sewing device according to the present embodiment. For the sake of convenience, in a substantially horizontal plane where the top plate 12 extends, the longitudinal direction in which the front edge of the sewing device 10 extends and the direction in which the take-out cloth 110 to be sewn advances is defined as the X direction. The XY directions are set such that the direction orthogonal to the X direction from the side to the back side is the Y direction.

  The sewing apparatus 10 according to the present embodiment folds the carry-out cloth storage unit 20 that stores the carry-out cloth 110, the supply / transport unit 30 that supplies and conveys the carry-out cloth 110, the positioning unit 40 that positions the carry-out cloth 110, and the carry-out cloth 110. It has a folding part 50. Further, the sewing apparatus 10 of the present embodiment includes a first feed unit 70, a second feed unit 80, and a third feed unit 90 that feed the take-out cloth 110 by sliding the upper surface of the top plate 12. ing.

  The carry-out cloth storage unit 20 is provided at a predetermined position on the side of the front edge of the gantry 11, and has a first magazine 21 and a second magazine 22 that are arranged adjacent to each other along the X direction. .

  FIG. 4 is a right side view of the sewing device according to the present embodiment. The first magazine 21 has an opening 21a formed on the upper side, and a plurality of take-out cloths 110 can be stacked and stored on the bottom plate 23. Similarly, the second magazine 22 also has an opening 22a formed on the upper side, and a plurality of take-out cloths 110 can be stacked and stored on the bottom plate 24. In one of the first magazine 21 and the second magazine 22 in the operating state for supplying the take-out cloth 110, the stored take-out cloth 110 is driven by the motor 26 via the arm 27, and moves up and down together with the bottom plates 23 and 24. Moved in the direction.

  Referring to FIG. 3, the first magazine 21 and the second magazine 22 are driven along the X direction by an actuator 29, and one of the first magazine 21 and the second magazine 22 is connected to the front edge of the top plate 12. It is located at a position adjacent to the supply / transport section 30 projecting from a predetermined position of the section. A pneumatic cylinder may be used for the actuator 29. The same applies to other actuators.

  The supply transport unit 30 is provided near the right edge of the top plate 12 and extends from a predetermined position protruding from the front edge toward the rear edge. The supply / transportation unit 30 has a first gripper 31 formed by a needle gripper for taking in and out the needle from the lower surface and gripping the carry-out cloth 110, and a second gripper 32 formed by a vacuum gripper that suctions the carry-out cloth 110 by vacuum. I have. The first gripper 31 is supported by a support plate 34 and is driven by an actuator 36 in a vertical direction and by an actuator 35 in a Y direction. The second gripper 32 is also supported by the support plate 34, and is driven by the actuator 38 in the elevating direction and by the actuator 37 in the Y direction. The support plate 34 extends in a substantially vertical direction, is attached to the top plate 12 via a support post 33, and forms a predetermined gap with the upper surface of the top plate 12.

  The positioning section 40 is provided at the front edge of the gantry 11 so as to be adjacent to the supply / transport section 30 and one of the first magazine 21 and the second magazine 22 located at a position adjacent to the supply / transport section 30. Can be The positioning section 40 is driven by an actuator (not shown) in the elevating direction, and has a positioning table 41 on which the take-out cloth 110 is placed on the upper surface. The positioning table 41 is provided with a reference member 42 at one end, and provides a reference surface 42a for positioning the take-out cloth 110 placed on the upper surface in the XY directions. The reference surface 42a has a shape that slightly protrudes from both sides toward the center so as to correspond to a shape that is slightly depressed from both sides to the center at one end of the take-out cloth 110 shown in FIG. Have.

  FIG. 5 is a top view illustrating a main part of the sewing apparatus according to the present embodiment. The positioning section 40 is driven by the actuator 46, and the other end of the take-out cloth 110 is placed on the reference surface 42a along the X direction so that one end of the take-out cloth 110 placed on the upper surface of the positioning table 41 contacts the reference surface 42a. It has a push claw 43 that pushes toward itself. The positioning section 40 is driven by actuators 47 and 48, respectively, and is a set of widths for moving the take-out cloth 110 placed on the upper surface of the positioning table 41 toward the center of the positioning table 41 in the Y direction. It has approach claws 44 and 45.

  The folding unit 50 is provided at a first position P1 on the upper surface of the top plate 12, and includes a first holding plate, a folding plate, and a folding plate (not shown) for folding the take-out cloth 110 placed at the first position P1. And a mechanism including a presser. The folding section 50 sends the taken-out cloth 110 to the position P2 after folding it.

  Referring to FIG. 3, the first feeding unit 70 has a second holding plate 71 that holds and holds the take-out cloth 110 folded by the folding unit 50 on the lower surface. The second holding plate 71 is supported by a support member 72 extending in the Y direction, and is driven in an elevating direction by an actuator 75, in a rotating direction about an axis extending in a substantially vertical direction by a motor 74, and in a Y direction by an actuator 73. Is done. The support member 72 is supported by a support base 76 extending in the X direction, and is driven by the actuator 77 along the X direction. The support base 76 has a predetermined height from the upper surface of the top plate 12, and forms a predetermined gap with the upper surface of the top plate 12. The second holding plate 71 may be processed so as to increase the friction of the lower surface, or may have irregularities formed on the lower surface, in order to hold the take-out cloth 110 while holding it. The same applies to other holding plates. The second holding plate 71 receives the take-out cloth 110 folded by the folding unit 50 at the second position P2 on the upper surface of the top plate 12, and moves the second holding plate 71 from the second position P2 to the third position P3 by 180 degrees about a predetermined axis. The first sewing machine 13 guides the side edge portion 110c to be sewn from the third position P3, and can be fed to the fourth position P4.

  The second feed portion 80 has a third holding plate 81 that holds the take-out cloth 110, whose side edge portion 110 c has been sewn by the first sewing machine 13, on its lower surface and holds it. The third holding plate 81 is supported by a support base 82, and is driven by a motor 84 in a rotation direction about an axis extending in a substantially vertical direction, in a vertical direction by an actuator 85, and in an X direction by an actuator 83. The support base 82 has a predetermined height from the upper surface of the top plate 12 and forms a predetermined gap with the upper surface of the top plate 12. The third holding plate 81 receives the take-out cloth 110 with the side edge 110c sewn by the first sewing machine 13 at the fourth position P4 on the upper surface of the top plate 12, and moves from the fourth position P4 to the fifth position. It can be fed to rotate over a predetermined angle from the fifth position P5 to the sixth position P6.

  The third feed unit 90 holds the take-out cloth 110, on which the side edge 110 c is sewn by the first sewing machine 13, by holding the lower surface on the lower surface, and guides the sewing of the folded part 110 d by the second sewing machine 14. It has a presser plate 91 and a fifth presser plate 92 which presses down and holds the take-out cloth 110 sewn by the folded portion 110d by the second sewing machine 14 on its lower surface. The fourth holding plate 91 and the fifth holding plate 92 are supported by a common support member 95 at a predetermined distance in the X direction, and are driven in the vertical direction by actuators 93 and 94, respectively. The support member 95 extends in a substantially vertical direction, is supported by a support plate 97, and is driven by an actuator 96 along the X direction. The support plate 97 extends in a substantially vertical direction, is attached to the top plate 12 via a column 99, and forms a predetermined gap between the support plate 97 and the upper surface of the top plate 12. The fourth holding plate 91 receives the take-out cloth 110 whose side edge 110c is sewn by the first sewing machine 13 at the fifth position P5 on the upper surface of the top plate 12, and receives the second cloth via the sixth position P6. The sewing of the folded portion 110d by the sewing machine 14 is guided, and can be sent to the seventh position P7. The fifth holding plate 92 can receive the carry-out cloth 110 with the folded portion 110d sewn by the second sewing machine 14 placed at the seventh position P7, and can send it to the opening 12a of the top plate 12.

  The sewing apparatus according to the present embodiment has a control unit (not shown). The control unit is provided with a control device for controlling a series of operations of the sewing device 10. The control device may perform sequence control. The control device may be operated by the control panel 19.

  FIG. 6 is a flowchart illustrating a series of operations in the sewing device 10 according to the present embodiment. In step S11, the take-out cloth 110 is supplied. The step of supplying the take-out cloth 110 is executed by the take-out cloth storage unit 20 and the supply / transport unit 30 of the sewing device 10.

  In order to execute the step of supplying the take-out cloth 110, the cloths of the take-out cloth 110 are stacked and stored in the first magazine 21 and the second magazine 22 of the take-out cloth storage unit 20. FIG. 7A shows the carry-out cloth 110 stored in the first magazine 21 and the second magazine 22 in the XY plane. The cloth of the take-out cloth 110 is made of denim cloth, and has a substantially rectangular shape in which one end is slightly depressed from both sides toward the center as shown in FIG. 1B. The take-out cloth 110 may be stacked such that the upper surface is on the back of the fabric and the lower surface is on the front of the fabric.

  One of the first magazine 21 and the second magazine 22 adjacent to the supply / transportation unit 30 is in an operation state in which the takeout cloth 110 is supplied by the supply / transportation unit 30, and the other is in a standby state. Even if one of the first magazine 21 and the second magazine 22 is in the operating state, the other in the standby state does not interact with the supply / conveyance unit 30 so that it is possible to freely replenish the cloth 110 taken out. it can.

  When one of the first magazine 21 and the second magazine 22 in the operation state has no carry-out cloth 110 or the number of the carry-out cloths 110 is smaller than a predetermined number, the one in the operation state is set to the standby state, and the standby state is set. The operating state and the standby state may be alternately switched so that the other in the state becomes the operating state. For this reason, the first magazine 21 and the second magazine 22 may be moved along the X direction such that the other is adjacent to the supply / transportation unit 30.

  Since the sewing apparatus 10 of the present embodiment has the first magazine 21 and the second magazine 22, while one of them is operated to supply the taken-out cloth, the other is in a standby state. In the standby state, the carry-out cloth is supplied to the magazine, and the operation state and the standby state are alternately repeated, so that the carry-out cloth 110 is continuously supplied without interrupting the operation for replenishing the magazine with the carry-out cloth. be able to.

  In one of the first magazine 21 and the second magazine 22 which is in the operating state adjacent to the supply transport unit 30, the first gripper 31 of the supply transport unit 30 grips and lifts the taken-out cloth 110 one by one. . In the present embodiment, since the first gripper 31 is a needle gripper, a needle is inserted into and gripped by a single take-out cloth at the top of the stacked take-out cloths 110.

  In the present embodiment, by using a needle gripper as the first gripper 31, a needle can be inserted into one of the top portions of the stacked take-out cloth and securely gripped. Note that the first gripper 31 is not limited to the needle gripper, and other types such as a vacuum gripper may be used depending on the material of the take-out cloth 110.

  In one of the first magazine 21 and the second magazine 22 in the operating state, the top of the take-out cloth 110 is raised so as to reach a reference height which is substantially the same as the upper surface of the top plate 12. , The bottom plate 23 or the bottom plate 24 may be raised. When the first gripper 31 descends and reaches the reference height, a single takeout cloth on the top of the stacked takeout cloths 110 may be gripped.

  When the first gripper 31 grips one take-out cloth 110, the first gripper 31 rises together with the grasped take-out cloth 110, moves along the Y direction to just above the upper surface of the positioning table 41 of the positioning section 40, and It descends until it reaches a predetermined distance from the upper surface, and releases the take-out cloth 110 so as to be placed on the upper surface of the positioning table 41. The take-out cloth 110 may be placed so that the upper surface is the back of the fabric and the lower surface is the front of the fabric. Since the first gripper 31 of the present embodiment is a needle gripper, the take-out cloth 110 is released by inserting the gripper 31 into the carry-out cloth 110 and retracting the grasped needle. The first gripper 31 may rise to a predetermined height after releasing the take-out cloth 110.

  In step S12, the take-out cloth 110 is positioned. In the sewing device 10, the step of positioning the take-out cloth 110 is performed by the positioning unit 40. In the positioning section 40, the take-out cloth 110 placed on the upper surface of the positioning table 41 by the first gripper 31 is pushed by the push claw 43 at the other end so that one end is in contact with the reference surface 42a of the reference member 42, It is made to go to the reference surface 42a along the X direction. The positioning table 41 is moved toward the center of the positioning table 41 in the Y direction by a pair of width-adjusting claws 44 and 45. Due to the operation of the push claws 43 and the pair of width shifting claws 44 and 45, the shape of the end of the take-out cloth 110 that is slightly depressed from both sides toward the center is slightly shifted from both sides toward the center on the reference surface 42a. The take-out cloth 110 is brought into contact with the protruding shape, and is positioned in the XY directions. When the take-out cloth 110 is positioned, the push claws 43 and the pair of width shifting claws 44, 45 retract to the original positions. The positioned take-out cloth 110 has the same orientation as the take-out cloth stored in the first magazine 21 and the second magazine 22, as shown in FIG. 7A, in the XY plane.

  In the positioning table 41 of the present embodiment, the push claws 43 can move along the X direction, and a set of width shifting claws can move along the Y direction. Therefore, it is possible to easily cope with carry-out cloths 110 having different sizes by appropriately moving the push claws 43 and the pair of width shift claws 44 and 45. By moving the positioning table 41 in the elevating direction by an actuator (not shown), the height of the positioning table 41 can be adjusted, for example, when the take-out cloth 110 is received from the first gripper 31.

  In step S13, the take-out cloth 110 is folded. In the sewing apparatus 10, the step of folding the take-out cloth 110 is performed by the folding unit 50. FIG. 8 is a flowchart showing a series of steps for folding the take-out cloth.

  In step S21, the take-out cloth 110 is placed at the first position P1 on the upper surface of the top plate 12. When the second gripper 32 of the supply / transportation unit 30 grips the taken-out cloth 110 placed and positioned on the upper surface of the positioning table 41, the second gripper 32 rises together with the taken-out cloth 110, and moves up to just above the first position P1. It moves along the direction, descends from the first position P1 on the upper surface of the top plate 12 until a predetermined distance is reached, and releases the take-out cloth 110 so as to be placed on the first position P1. The take-out cloth 110 may be placed so that the upper surface is the back of the fabric and the lower surface is the front of the fabric. Since the second gripper 32 of the present embodiment is a vacuum gripper, the take-out cloth 110 is sucked and held by vacuum, and the take-out cloth 110 is released and placed by stopping suction by vacuum. The take-out cloth 110 placed at the first position P1 maintains the orientation when positioned by the positioning table 41 in the XY plane as shown in FIG. 7A.

  In the present embodiment, a vacuum gripper is used as the second gripper 32, and the positioning accuracy of the take-out cloth 110 is ensured by suction on the entire surface of the gripper. The suction by the vacuum gripper does not need to be performed on the entire surface, and may be partially performed depending on the material of the take-out cloth 110.

  FIG. 9 is a top view showing a state in which the take-out cloth 110 is placed at the first position P1 in the folding section 50. The folding unit 50 folds the first half of the take-out cloth 110 by holding the first half of the one-side half of the take-out cloth 110 on the lower surface, and the other half of the second side of the take-out cloth 110 along the first folding line 110b. In addition, a folded plate 52 that presses and holds the folded-out takeout cloth 110 on the lower surface, a pressing tool 62 that presses and holds a side edge 110c where the folded-out takeout cloth 110 overlaps on the lower surface, and a folded-out takeout A folding plate 53 for folding one end of the cloth 110. The first holding plate 51 extends in the longitudinal direction of the take-out cloth 110 and has a first reference side 51a corresponding to the first fold line 110a, and extends along one end of the take-out cloth 110 and has a second fold line. And a second reference side 51b corresponding to 110b.

  The first holding plate 51 is driven in the elevating direction by the actuator 55 and in the Y direction by the actuator 54. The first holding plate 51 may be formed of two parallel plates facing each other with a predetermined gap therebetween. The gap formed by the two-layer plate may be formed such that one end of the take-out cloth 110 can be folded by the folding plate 53. Further, the thickness of the first holding plate 51 may be optimized for folding the take-out cloth 110. The optimized thickness may be determined by repeating experiments. The folded plate 52 can be stored in the top plate 12 such that its upper surface is within the upper surface of the top plate 12, and is driven in the vertical direction by the actuator 58 and in the Y direction by the actuator 57.

  The holding member 62 has a center holding portion 64 and both-side holding portions 65 along the X direction, and is supported by a support 63. The center pressing portion 64 and both pressing portions 65 are independently driven in the ascending and descending directions by actuators 67 and 68, respectively, and are driven in the X direction by a common actuator 69. The support 63 has a predetermined height from the upper surface of the top plate 12, and forms a predetermined gap with the upper surface of the top plate 12.

  The folding plate 53 is driven by the actuator 60 in the elevating direction, by the actuator 59 in the X direction, and by the actuator 61 in the Y direction. The folding plate 53 may be formed of two plates parallel to each other with a predetermined gap.

  In the take-out cloth 110 placed at the first position P1 on the top surface of the top plate 12, the half of one side of the folding line 110 a extending in the longitudinal direction of the take-out cloth 110 sandwiches the gap between the first holding plate 51. And is supported by the upper surface of the top plate 12, but the other half is also supported by the upper surface of the folded plate 52 stored in the same plane as the upper surface of the top plate 12. Accuracy of the position of the take-out cloth 110 in the XY direction at the first position P1 is ensured by the positioning step of step S12.

  In step S22, the first pressing plate 51 presses one half of the take-out cloth 110 on one side. FIG. 10 is a top view showing a state in which a half of one side of the take-out cloth is pressed by the first pressing plate 51 in the folding section 50. The first holding plate 51 secures bending of the take-out cloth 110 at the first folding line 110a by the first reference side 51a, and bending of the take-out cloth 110 at the second folding line 110b by the second reference side 51b. So that half of one side of the take-out cloth 110 is pressed and held by the lower surface so that is secured.

  In step S23, the other half of the take-out cloth 110 is folded back by the return plate 52, and the take-out cloth 110 is folded in two. FIG. 11 is a top view showing a state in which the other half of the take-out cloth 110 is folded back by the folding plate 52 in the folding section 50. The folded plate 52 raises the upper surface so that the other half of the take-out cloth 110 supported by the upper surface stored in the same surface as the upper surface of the top plate 12 rises, and then passes through the first pressing plate 51. Then, the other half of the take-out cloth 110 is pressed by the lower surface so as to be folded over the one half of the take-out cloth 110. Here, since the first folding line 110a of the take-out cloth 110 is secured by the first reference side 51a of the first holding plate 51, the folding of the carry-out cloth 110 at the first folding line 110a is ensured. Is done. The outer side of the folded out cloth 110 may be the front side of the cloth, and the inside may be the back side of the cloth. In the folded-out take-out cloth 110, a half edge on one side overlaps a half edge on the other side to form a side edge 110c. FIG. 7B shows the take-out cloth 110 folded in two in the XY plane.

  In step S <b> 24, the side edge 110 c of the folded-out take-out cloth 110 is pressed by the presser 62. FIG. 12 is a top view showing a state in which the side edge 110 c of the take-out cloth 110 is pressed by the presser 62 in the folding section 50. The presser 62 presses and holds the side edge 110c of the take-out cloth 110 on the lower surface. In the holding member 62, the holding portions 65 on both sides hold only the side edges 110 c of the take-out cloth 110, whereas the center holding portion 64 is folded between one half of the take-out cloth 110 and the other half. The side edge 110c is pressed with the plate 52 interposed therebetween. Therefore, the lower surface of the center pressing portion 64 is adjusted to be at an appropriate position higher than the lower surfaces of the pressing portions 65 on both sides.

  In step S <b> 25, one end of the folded out cloth 110 is folded by the folding plate 53. FIG. 13 is a top view showing a state where one end of the take-out cloth 110 is folded by the folding plate 53 in the folding section 50. The folding plate 53 folds one end of the folded-out takeout cloth 110 into the inside of the folded-out face of the takeout cloth 110. One end of the take-out cloth 110 is folded inward in the folded-out take-out cloth 110 to form a folded portion 110d. After the folding operation is completed, the folding plate 53 is pulled out from the take-out cloth 110 and returns to the original position. Here, since the second folding line 110b of the take-out cloth 110 is secured by the second reference side 51b of the first holding plate 51, the folding of the carry-out cloth 110 at the second folding line 110b is secured. You. FIG. 7C shows, in the XY plane, the take-out cloth 110 having one end folded at the second folding line 110b to form the folded portion 110d.

  In step S26, the first holding plate 51 and the folded plate 52 are pulled out from the folded take-out cloth 110. FIG. 14 is a top view showing a state in which the first holding plate 51 and the folded plate 52 are pulled out of the carry-out cloth 110 in the folding section 50. The first holding plate 51 and the folded plate 52 are pulled out from the folded take-out cloth 110, and the take-out cloth 110 is held by a holding member 62 that presses the side edge 110c. In the holding member 62, the folded plate 52 sandwiched between the half on one side and the half on the other side of the take-out cloth 110 is pulled out, so that the center holding portion 64 is equal to the holding portions 65 on both ends and the height of the lower surface. Are adjusted so as to descend until they are substantially equal.

  The presser 62 presses and holds the side edge 110c of the take-out cloth 110 with the lower surface, and slides the upper surface of the top plate 12 to feed the cloth to the second position P2. In FIG. 9, the take-out cloth 110 sent to the second position P2 by the presser 62 is indicated by a virtual line. The take-out cloth 110 at the second position P2 is the same as step S25 in the XY plane as shown in FIG. 7C.

  In the present embodiment, the first holding plate 51, the folding plate 52, and the folding plate 53 of the folding unit 50 are arranged so as to surround the first position P1 where the take-out cloth 110 is arranged, and the first position P1 from the respective positions. The take-out cloth 110 is folded out by protruding to the position P1. Therefore, the folded portion 50 of the present embodiment can easily cope with a take-out cloth 110 having a different size. Further, the first holding plate 51, the folding plate 52, and the folding plate 53 of the folding unit 50 can also move in the elevating direction, so that it is possible to easily cope with the carry-out cloth 110 having different thicknesses.

  In step S14 shown in FIG. 6, the side edge 110c of the folded take-out cloth 110 is sewn. With reference to FIGS. 2 and 3, the second holding plate 71 receives the carry-out cloth 110 sent to the second position P2 on the upper surface of the top plate 12 by the presser 62 and performs the first folding of the carry-out cloth 110. The side of the line 110a is pressed and held by the lower surface. When the holding tool 62 passes the carry-out cloth 110 to the second holding plate 71, it rises from the side edge 110 c of the carry-out cloth 110 and releases the carry-out cloth 110.

  The second holding plate 71 slides the upper surface of the top plate 12 counterclockwise, for example, so that the take-out cloth 110 held at the second position P2 makes a half rotation about the axis of the motor 74, and moves to the third position P3. Move up to. In the XY plane, the take-out cloth 110 shown in FIG. 7C at the second position P2 is moved from the second position P2 to the shaft of the motor 74 at the third position P3 as shown in FIG. 7D. The side edge portion 110c extends along the X direction and moves toward the Y direction. Therefore, the direction of the sewing start with respect to the take-out cloth 110 is changed by 180 degrees.

  The second holding plate 71 advances the take-out cloth 110 held at the third position P3 in the X direction by sliding the upper surface of the top plate 12 to move the take-out cloth 110 on the side edge 110c of the take-out cloth 110 by the first sewing machine 13. The overlock sewing is guided, and after finishing the sewing, it is further fed to the fourth position P4. The second pressing plate 71 has the side edge 110c of the take-out cloth 110 directly below the sewing portion of the first sewing machine 13 so that the side edge 110c of the take-out cloth 110 is appropriately sewn by the first sewing machine 13. Is guided to advance at a predetermined speed. The overlock sewing by the first sewing machine 13 may be performed by three needles or four needles, and may have a back tack function of sewing an empty ring inside at the beginning of sewing by an empty ring suction device. Good. By back tack sewing, the sewing strength can be increased and the appearance can be improved. As shown in FIG. 7E, the side edge 110c of the take-out cloth 110 that has reached the fourth position P4 is sewn in the XY plane.

  In the present embodiment, the second holding plate 71 of the first feed unit 70 is supported by a support base 76 extending in the X direction and a support member 72 extending in the Y direction so as to be movable in the XY directions. Therefore, the first feeding portion 70 of the present embodiment can easily cope with the take-out cloth 110 having different sizes.

  When the take-out cloth 110 is sent to the fourth position P4, the third pressing plate 81 receives the cloth 110 and presses and holds the side edge 110c of the take-out cloth 110 with the lower surface. When the second holding plate 71 passes the take-out cloth 110 to the third holding plate 81, the second holding plate 71 rises from the side of the first folding line 110a of the carry-out cloth 110 and releases the carry-out cloth 110. The third holding plate 81 advances the take-out cloth 110 held at the fourth position P4 in the X direction by sliding the upper surface of the top plate 12, and moves to the fifth position P5. The take-out cloth 110 that has moved to the fifth position P5 is as shown in FIG. 7E in the XY plane.

  Next, the third holding plate 81 slides the upper surface of the top plate 12 so that the take-out cloth 110 held at the fifth position P5 rotates clockwise, for example, over a predetermined angle about the axis of the motor 74, and To the position P6. Here, the predetermined angle for rotating the take-out cloth 110 is such that the side edge 110c at the fifth position P5 shown in FIG. 7E extends along the X direction and moves in the Y direction as shown in FIG. The angle is such that the second folding line 110b extends along the X direction and rotates toward the Y direction as shown in FIG. For example, the predetermined angle may be 100 ° to 120 ° clockwise.

  In step S15, the folded portion 110d of the folded take-out cloth 110 is sewn. The fourth holding plate 91 receives the carry-out cloth 110 sent to the fifth position P5 on the top surface of the top plate by the third holding plate 81, and takes out the take-out cloth 110 such that the folded portion 110d of the carry-out cloth 110 is exposed. And hold it by the lower surface. When the third holding plate 81 passes the takeout cloth 110 to the fourth holding plate 91, the third holding plate 81 rises from the side edge 110 c of the takeout cloth 110 and releases the takeout cloth 110.

  The fourth holding plate 91 slides the upper surface of the take-out cloth 110 held at the sixth position P6 in the X direction by sliding the upper surface of the top plate 12, and moves the book cloth of the folded portion 110 d of the carry-out cloth 110 by the second sewing machine 14. After the completion of the sewing, the sewing machine advances in the X direction from the second sewing machine 14 to the seventh position P7. The fourth holding plate 91 is provided such that the folded portion 110d of the take-out cloth 110 is positioned immediately below the sewing portion of the second sewing machine 14 so that the folded portion 110d of the carry-out cloth 110 is appropriately sewn by the second sewing machine 14. Guide you to go at the speed. The lockstitch by the second sewing machine 14 may be reverse stitching at the end of sewing on the side of the first folding line 110a. The fourth holding plate 91 may guide the take-out cloth 110 such that the carry-out cloth 110 advances in the direction opposite to the X direction when performing reverse stitching.

  The take-out cloth 110 having the folded portion 110d sewn by the second sewing machine 14 and having reached the seventh position P7 has a shape of a take-out component in the XY plane as shown in FIG. 7 (g). The seventh position P7 may be a position advanced by a predetermined distance in the X direction from the sewn portion of the second sewing machine 14. When the fourth holding plate 91 sends the take-out cloth 110 to the seventh position P7, the fourth holding plate 91 rises from the side of the first folding line 110a of the take-out cloth 110 and releases it, and places the take-out cloth 110 thereon.

  The fifth holding plate 92 holds the take-out cloth 110 placed at the seventh position P7 by the fourth holding plate 91 by holding the lower surface with the lower surface, and slides the upper surface of the top plate 12 to advance in the X direction. The take-out cloth 110 is made to reach the opening 12a of the top plate 12. Here, the fifth presser plate 92 cuts the thread in the lockstitch, and thereafter sucks the thread by a suction cut-off vacuum (not shown) provided at a predetermined position. The fifth presser plate 92 and the suction-vacuum constitute a thread processing unit that cuts the vacuum-sucked thread from the take-out cloth 110 that has been fully sewn by the second sewing machine 14. The take-out cloth 110 that has reached the opening 12a falls from the top plate 12 and is received by a container (not shown).

  In the present embodiment, the third feed portion 90 drives the fourth holding plate 91 and the fifth holding plate 92 in the X direction via the common support member 95. Therefore, the third feeding portion 90 of the present embodiment is configured to guide the sewing of the folded portion 110 d of the take-out cloth 110 by the second sewing machine 14 by the fourth pressing plate 91 and the second pressing by the fifth pressing plate 92. The carrying out of the take-out cloth 110, for which the folding section 110d has been sewn by the sewing machine 14, to the opening 12a can be efficiently performed according to the same timing. Also, by overlapping the cutting and suction of the yarn by the yarn processing unit and the conveyance to the opening 12a, the cycle time can be shortened and the productivity can be improved.

  Through a series of steps from step S11 to step S14, the side edge portion 110c of the take-out cloth 110 is overlocked and the folded portion 110d is fully sewn to sew the taken-out component. Since the sewing of the taken-out parts is automated without manual work, the quality of the taken-out parts is stabilized, and the amount of sewing can be increased.

  In the present embodiment, the supply of the take-out cloth in step S11, the positioning in step S12, the folding in the position in step S13, the sewing of the side edge 110c in step S14, and the folding in step S15 shown in the flowchart of FIG. By performing each step of the sewing in synchronization with a predetermined timing, the operation in the sewing apparatus 10 can be performed in parallel and without interruption. This timing may be set based on the speed at which the first sewing machine 13 and the second sewing machine 14 sew the taken-out cloth.

  The sewing apparatus 10 of the present embodiment can easily cope with a different size of the take-out cloth 110 by changing the take-out cloth 110. For example, it can cope with sewing of jeans or slacks taken out from 27 inches to 42 inches. In the sewing apparatus 10 according to the present embodiment, the step change by size of the take-out cloth 110 is performed by exchanging the first magazine 21 and the second magazine 22 that store the take-out cloth 110 and positioning the positioning section 40 that positions the take-out cloth 110. This is done by switching the set value of. These settings may be changed by operating the control panel 19 to call up the size stored in the control unit (not shown). Similarly, by changing the setting of the positioning section 40, the centering positioning can also be changed.

Reference Signs List 10 sewing device 11 gantry 12 top plate 13 first sewing machine 14 second sewing machine 20 take-out cloth storage unit 21 first magazine 22 second magazine 30 supply / transport unit 31 first gripper 32 second gripper 40 positioning unit 41 Positioning table 50 Folding part 51 First holding plate 52 Folding plate 53 Folding plate 70 First feeding part 71 Second holding plate 80 Second feeding part 81 Third holding plate 90 Third feeding part 91 First Fourth holding plate 92 Fifth holding plate 110 Take-out cloth P1 to P7 Position of take-out cloth in each process

Claims (11)

A sewing device for sewing a take-out cloth to a part taken out of pants,
A gantry having a top plate, a take-out cloth storage unit attached to a side portion of the gantry and having an open top and a stack of carry-out cloths,
A positioning table that is provided on the gantry and that positions a take-out cloth on the upper surface and positions it.
A first gripper that grasps and takes out the taken-out cloths stored in the taken-out cloth storage unit one by one and places them on the positioning table;
A second gripper that grips a take-out cloth placed and positioned on the positioning table and placed on a first position of the top plate;
The take-out cloth placed at the first position is folded in two at a first folding line extending in the longitudinal direction, and one end of the folded-out cloth is folded at a second folding line extending along the one end. Folding part,
A first sewing machine for sewing a side edge of the take-out cloth folded in half at the folding section;
A second sewing machine for sewing a folded portion of the take-out cloth folded by the folding portion. The folding section,
A first holding plate for holding and holding a half of one side of the take-out cloth placed at the first position;
A folded plate that lifts the other half of the take-out cloth and folds it in half at the first folding line so as to overlap the half of the one side;
A presser that presses and holds the side edge of the take-out cloth folded in half on one half by the folding plate,
The sewing device according to claim 1, further comprising: a folding plate that folds one end of the carry-out cloth held by the first holding plate and the holding member along a second folding line.   The sewing device according to claim 2, wherein the first holding plate includes two layers of plates facing each other with a gap therebetween.   The sewing device according to claim 2, wherein a thickness of the first holding plate is optimized for folding a take-out cloth.   The sewing device according to any one of claims 1 to 4, wherein the first sewing machine has a function of performing overlock sewing on a side edge of the take-out cloth and sucking an empty ring at the start of sewing.   The sewing device according to any one of claims 1 to 4, wherein the second sewing machine performs a lock stitch on a folded portion of the take-out cloth.   The sewing apparatus according to claim 6, further comprising a thread processing unit configured to cut the thread while vacuum-sucking the thread from the folded-in cloth that has been stitched by the second sewing machine. The positioning table,
A reference surface that is in contact with the take-out cloth placed on the upper surface,
A pushing claw that pushes the take-out cloth toward the reference surface,
The sewing device according to any one of claims 1 to 7, further comprising: a pair of opposing width-shifting claws for narrowing the take-out cloth in parallel with the reference surface. A first feed unit that receives the take-out cloth from the first position, feeds the take-out cloth by half a rotation along the top surface of the top plate, and feeds the sewing by the first sewing machine;
A second feeding unit that receives the take-out cloth from the first feeding unit, sends the cloth along the upper surface of the top plate, and rotates over a predetermined angle;
The sewing device according to any one of claims 1 to 8, further comprising: a third feed unit that receives the carry-out cloth from the second feed unit and guides sewing by the second sewing machine.   The said 1st gripper and the said 2nd gripper are a needle gripper which grips a take-out cloth by taking in and out a needle from a lower surface, or a vacuum gripper which adsorbs the carry-out cloth by vacuum. The sewing apparatus according to claim 1. The sewing device according to any one of claims 1 to 10, wherein the carry-out cloth storage unit includes a plurality of magazines for stacking and storing carry-out cloths.

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