JP6427292B1 - Sewing device - Google Patents

Abstract

An object of the present invention is to eliminate the need for manual sewing when sewing out a trodden part. A sewing apparatus 10 has a table 11 having a top plate 12, a first magazine 21 and a second magazine 22 for storing a carry-out cloth 110, a positioning table 41, a first gripper 31, and a second gripper 32. The carrying cloth 110 placed at the first position P1 on the top surface of the top plate 12 is folded in half along the first fold line 110a extending in the longitudinal direction, and one end of the carrying cloth 110 folded in half is one end thereof The first sewing machine 13 for sewing the side edge 110c of the carry-out cloth 110 folded in half at the second fold line 110b extending along the second fold line 110b and the carry-out cloth 110 folded in at the fold section 50 The second sewing machine 14 is used to sew the folded portion 110d. [Selected figure] Figure 2

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a sewing device that automates the sewing of jeans brought out parts.

  Conventionally, trousers in which denim fabric is sewn are widely distributed as being called jeans. Usually, the back of the front side of the jeans is sewn on a material referred to as a carry-out part consisting of another folded denim fabric arranged along the direction in which the fastener extends so as to cover the fastener.

  FIG. 1 is a view for explaining a carry-out part of jeans. In the main part of the back surface on the front side of the jeans 100 shown in FIG. 1A, the carry-out component 101 is disposed along the direction in which the fastener extends so as to cover the fastener. The carry-out part 101 uses a carry-out cloth 110 of a denim fabric having a substantially rectangular shape with one end slightly recessed toward the center from both sides as shown in FIG. 1B, and extends in the longitudinal direction of the carry-out cloth 110 As shown in FIG. 1 (c), with regard to the folding line 110a of the first folding line 110a and the second folding line 110b extending along one end, the carry-out cloth 110 is placed such that the front surface of the denim fabric is outside at the first folding line 110a. The folding cloth 110 is folded in half and one end of the carry-out cloth 110 is folded at the second fold line 110 b, and the overlapping side edge 110 c of the folded cloth 110 is overlocked and the fold 110 d is woven into one end. It is done and sewed.

  However, since the sewing workers manually sewn the brought-out parts of the jeans, the sewing workers are required to have a certain technology, and the quality of the brought-out parts sewn is not stable. In addition, the amount that can be sewn is also limited because sewing workers manually carry out and sew parts.

  The present invention is proposed in view of the above-mentioned situation, and provides a sewing device for sewing a carry-out cloth to a carry-out part, which does not require a sewing operation by a sewing worker's manual work. The purpose is

  In order to solve the above-described problems, the sewing device according to the present invention is for sewing a carry-out cloth to a carry-out part of a trouser, and is attached to a mount frame having a top plate and a side part of the mount frame. Take-out cloth storage unit for stacking and storing take-out cloths, positioning table provided on the rack and placing the take-out cloth on the upper surface for positioning, and take-out cloth stored in the take-out cloth storage unit one by one A first gripper for gripping, taking out and placing on a positioning table, and a second gripper for gripping a carrying-out cloth placed and positioned on the positioning table and placing it on a first position of the top plate, The carrying-out fabric placed in the first position is folded in half at a first fold line extending in the longitudinal direction, and one end of the folded-out carry-out fabric is folded at a second fold line extending along the one end And 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 portion is placed on the first position, and the first pressing plate holds and holds the other half of the carry-out cloth, and the other half of the carry-out cloth lifts and overlaps the other half of the carry-out cloth. And a presser for pressing and holding the side edge of the carry-out cloth folded in half on one side by the turnback plate, a first presser plate, and And a folding plate for folding one end of the carry-out cloth held by the pressing tool at a second folding line. The first pressing plate may include two layers of plates facing each other across a gap. The thickness of the first backing plate may be optimized for breaking the carry-out fabric.

  The first sewing machine may have the function of overlock sewing the side edge of the carry-out cloth and sucking in the empty ring at the start of sewing. The second sewing machine may lock the fold-in portion of the carry-out cloth. It may further include a thread processing unit that cuts the suction cloth with vacuum from the folded-in cloth stitched with the second sewing machine.

  The positioning table includes a reference surface which is in contact with the carry-out cloth placed on the upper surface, a pressing claw which pushes the carry-out cloth against the reference surface, and a pair of facing members which pulls the carry-out cloth parallel to the reference surface. It may also include width adjustment claws.

  A take-out cloth is received from the first position, the take-out cloth is rotated by a half turn along the upper surface of the top plate, and the first feed portion guides sewing by the first sewing machine, and the take-out cloth from the first feed portion And a second feed unit for feeding it along the upper surface of the top plate and rotating it by a predetermined angle, and a third feed unit for receiving the carry-out cloth 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 holds the carry-out cloth by taking in and out 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 that stack and store carry-out cloths.

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

It is a figure explaining the carry-out part of jeans. It is a front view of the sewing device of this embodiment. It is a top view of the sewing device of this embodiment. It is a right side view of a sewing device of this embodiment. It is a principal part top view which shows the principal part of the top view of FIG. It is a flow chart explaining a series of operations in the sewing device of this embodiment. It is a top view which shows the change of the shape of carrying-out cloth. It is a flow chart explaining a series of operations in a folding part of a sewing device. It is a top view which shows the state which mounted the taking-out cloth in the 1st position in a folding part. It is a top view which shows the state which one half of one side of the carrying out cloth in the folding part was pressed by the 1st pressing plate. It is a top view which shows the state which half-folded the other side of the carrying out cloth in the folding part was folded by the folding plate. It is a top view which shows the state which pressed the side edge part of the carrying out cloth in the folding part by the holding tool. It is a top view which shows the state which folds in the edge part of carrying-out cloth in a fold part with a fold-in board. It is a top view which shows the state which pulled out the 1st press board and the folding plate from the carrying out cloth in the folding part.

  Hereinafter, the sewing device according to the present embodiment will be described in detail with reference to the drawings. The sewing apparatus according to the present embodiment is assumed to sew a carry-out part of jeans which is a trousers made of denim fabric and to automate steps from the process of picking up the carry-out fabric to the process of sewing the carry-out fabric. The present embodiment is not limited to this, and can also be applied to the sewing of carry-out parts other than denim fabric such as slacks, for example.

  FIG. 2 is a front view of the sewing device of the present embodiment. In the sewing device 10 of the present embodiment, a top plate 12 having an upper surface extending in a substantially horizontal direction is supported by the rack 11 at a predetermined height. The upper surface of the top plate 12 is formed smoothly so that the carry-out cloth 110 can slide. The upper surface of the top plate 12 is provided with a first sewing machine 13 for sewing the side edge portion 110c of the folded carry-out cloth 110 and a second sewing machine 14 for sewing the folded portion 110d of the folded carry-out cloth 110 It is done. An opening 12a is formed at a predetermined position of the top plate 12, and a container (not shown) for receiving the sewn carry-out cloth 110 is provided immediately below the opening 12a. A control board 19 is attached at a predetermined position on the front edge of the top plate 12.

  FIG. 3 is a top view of the sewing device of the present embodiment. For the convenience of description, the front edge of the sewing apparatus 10 is a longitudinal direction in which the front edge of the sewing apparatus 10 extends in a substantially horizontal plane in which the top plate 12 extends, and the direction in which the carry-out cloth 110 to be sewn travels is the X direction. The X and Y directions are set such that a 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 includes a carry-out cloth storage unit 20 for storing the carry-out cloth 110, a supply / conveyance unit 30 for supplying and conveying the carry-out cloth 110, a positioning unit 40 for positioning the carry-out cloth 110, and folding the carry-out cloth 110. It has a fold 50. In addition, the sewing device 10 of the present embodiment has a first feeding unit 70, a second feeding unit 80, and a third feeding unit 90, which feed the carry-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 rack 11 and has a first magazine 21 and a second magazine 22 arranged adjacent along the X direction. .

  FIG. 4 is a right side view of the sewing device of the present embodiment. The first magazine 21 has an opening 21 a formed thereon, and can stack and store a plurality of carry-out cloths 110 on the bottom plate 23. Similarly, the second magazine 22 is also formed with an opening 22 a at the top, and a plurality of carry-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 carry-out cloth 110, the stored carry-out cloth 110 is driven by the motor 26 through the arm 27 and moves up and down together with the bottom plates 23, 24. Moved in the direction.

  Referring to FIG. 3, the first magazine 21 and the second magazine 22 are driven by the actuator 29 along the X direction, and one of the first magazine 21 and the second magazine 22 is the front edge of the top plate 12. It is made to be in the position which adjoins the supply conveyance part 30 which protruded from the predetermined position of the part. As the actuator 29, a pneumatic cylinder may be used. The same applies to the other actuators.

  The feeding and conveying unit 30 is provided near the right edge of the top plate 12 and extends from a predetermined position projecting to the front edge toward the rear edge. The feeding / conveying unit 30 has a first gripper 31 with a needle gripper that holds the carry-out cloth 110 by taking a needle in and out of the lower surface, and a second gripper 32 with a vacuum gripper that suctions the carry-out cloth 110 by vacuum. There is. The first gripper 31 is supported by the support plate 34 and is driven by the actuator 36 in the vertical direction along the Y direction by the actuator 35. The second gripper 32 is also supported by the support plate 34, and is driven by the actuator 38 in the elevating direction along the Y direction by the actuator 37. The support plate 34 extends in a substantially vertical direction, is attached to the top 12 via the support 33, and forms a predetermined gap with the top surface of the top 12.

  The positioning unit 40 is provided to be adjacent to the supply / conveyance unit 30 and one of the first magazine 21 and the second magazine 22 adjacent to the supply / conveyance unit 30 at the front edge of the gantry 11. Be The positioning unit 40 has a positioning table 41 which is driven in the raising and lowering direction by an actuator (not shown) and places the carry-over cloth 110 on the upper surface. The positioning table 41 is provided with a reference member 42 at one end, and provides a reference surface 42 a for positioning the carry-out cloth 110 placed on the upper surface in the X and Y directions. The reference surface 42a has a shape slightly projecting from the both sides toward the center so as to correspond to a shape that is slightly recessed from the both sides toward the center at one end of the carry-out cloth 110 shown in FIG. Have.

  FIG. 5 is a top view showing the main part of the sewing device of the present embodiment. The positioning unit 40 is driven by the actuator 46, and one end of the carry-out cloth 110 placed on the upper surface of the positioning table 41 contacts the reference surface 42a with the other end of the carry-out cloth 110 along the X direction. It has a pushing claw 43 which is pushed toward the head. Further, the positioning unit 40 is driven by the actuators 47 and 48 and is a set of widths for moving the carry-out cloth 110 placed on the upper surface of the positioning table 41 toward the center of the positioning table 41 along the Y direction. It has hooks 44 and 45.

  The folding portion 50 is provided at a first position P1 on the upper surface of the top plate 12, and a first pressing plate, a folding plate, and a folding plate (not shown) for folding the carry-out cloth 110 placed at the first position P1. And a mechanism including a pressing tool. The folding unit 50 folds the carry-out cloth 110 and sends it to the position P2.

  Referring to FIG. 3, the first feeding unit 70 includes a second pressing plate 71 that holds the carry-out cloth 110 folded by the folding unit 50 by pressing the lower surface thereof. The second pressing plate 71 is supported by the support member 72 extending along the Y direction, and is driven by the actuator 73 along the Y direction about the axis extending substantially vertically by the motor 74 in the up and down direction by the actuator 75 Be done. The support member 72 is supported by a support 76 extending along the X direction, and is driven by the actuator 77 along the X direction. The support stand 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 pressing plate 71 may be processed to increase the friction of the lower surface or may be uneven on the lower surface in order to press and hold the carry-out cloth 110. The same applies to the other pressing plates. The second pressing plate 71 receives the carry-over cloth 110 folded by the folding portion 50 at the second position P2 on the upper surface of the top plate 12, and from the second position P2 to the third position P3 180 degrees about a predetermined axis It is possible to feed so as to rotate, guide the side edge 110c to sew by the first sewing machine 13 from the third position P3, and send it to the fourth position P4.

  The second feeding portion 80 has a third pressing plate 81 for pressing and holding the carry-out cloth 110 whose side edge 110 c is sewn by the first sewing machine 13 with the lower surface. The third presser plate 81 is supported by the support base 82, and is driven along the X direction by the actuator 83 in the vertical direction by the actuator 85 in a rotational direction about an axis extending substantially vertically by the motor 84. The support base 82 has a predetermined height from the top surface of the top plate 12 and forms a predetermined gap with the top surface of the top plate 12. The third pressing plate 81 receives the carry-out cloth 110 of which the side edge 110c is sewn by the first sewing machine 13 at the fourth position P4 on the upper surface of the top plate 12, and the fourth position P4 to the fifth position It can be sent to P5 and can be sent to rotate from a fifth position P5 to a sixth position P6 over a predetermined angle.

  The third feeding unit 90 presses and holds the carry-out cloth 110 whose side edge 110 c is sewn by the first sewing machine 13 with its lower surface, and guides the sewing of the folding portion 110 d by the second sewing machine 14. A holding plate 91 and a fifth holding plate 92 for holding and holding the carry-out cloth 110 sewn by the second sewing machine 14 at the lower surface thereof are provided. The fourth pressing plate 91 and the fifth pressing plate 92 are supported by a common support member 95 at a predetermined distance in the X direction, and are driven by the actuators 93 and 94 in the vertical direction. The support member 95 extends in a substantially vertical direction, is supported by the support plate 97, and is driven by the actuator 96 along the X direction. The support plate 97 extends in a substantially vertical direction, is attached to the top plate 12 via the support columns 99, and forms a predetermined gap with the top surface of the top plate 12. The fourth pressing plate 91 receives the carry-out cloth 110 of which the side edge portion 110c is sewn by the first sewing machine 13 at the fifth position P5 on the top surface of the top plate 12, and the second holding plate 91 passes the sixth position P6. The sewing of the folding portion 110d by the sewing machine 14 can be guided and sent to the seventh position P7. The fifth presser plate 92 can receive the carry-out cloth 110 on which the folded portion 110 d is sewn by the second sewing machine 14 placed at the seventh position P 7 and can send it to the opening 12 a of the top plate 12.

  The sewing device of 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 controller 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, a carry-out cloth 110 is supplied. The process of supplying the carry-out cloth 110 is performed by the carry-out cloth storage unit 20 and the supply and conveyance unit 30 of the sewing device 10.

  In order to carry out the step of supplying the carry-out cloth 110, it is assumed that the cloths of the carry-out cloth 110 are stacked and stored in the first magazine 21 and the second magazine 22 of the carry-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 carry-out cloth 110 is made of denim cloth and has a substantially rectangular shape with one end slightly recessed from the both sides toward the center as shown in FIG. 1 (b). The carry-over fabric 110 may be stacked so 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 and transport unit 30 is in an operating state to supply the carry-out cloth 110 by the supply and transport 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 is not interacting with the feeding / conveying unit 30, and can freely replenish the carry-out cloth 110. it can.

  When one of the first magazine 21 and the second magazine 22 in the operating state runs out of the carry-out cloth 110 or the carry-out cloth 110 becomes smaller than a predetermined number, the one in the operating state is put in the standby state The operating state and the standby state may be alternately switched so that the other in the state is brought into the operating state. Therefore, the first magazine 21 and the second magazine 22 may be moved along the X direction so that the other is adjacent to the supply / conveyance unit 30.

  The sewing apparatus 10 according to the present embodiment has the first magazine 21 and the second magazine 22. Therefore, while one is operated to supply the carry-out cloth, the other is in the standby state. The take-up cloth is to be replenished to the magazine in the standby state, and by alternately repeating the operating state and the standby state, the take-out cloth 110 is supplied without interruption without interrupting the operation for replenishing the take-out cloth to the magazine. be able to.

  In one of the first magazine 21 and the second magazine 22 in the operating state adjacent to the feeding and conveying unit 30, the first gripper 31 of the feeding and conveying unit 30 holds and lifts the carry-out cloth 110 one by one . In the present embodiment, since the first gripper 31 is a needle gripper, the needle is inserted into and held by a single carrying cloth on the top of the stacked carrying cloths 110.

  In this embodiment, by using a needle gripper for the first gripper 31, the needle can be inserted into one of the tops of the stacked carry-out cloths and can be gripped securely. The first gripper 31 is not limited to the needle gripper, but may be another type such as a vacuum gripper depending on the material of the carry-over cloth 110.

  In one of the first magazine 21 and the second magazine 22 in the operating state, the top of the carry-out cloth 110 is elevated until it reaches a reference height substantially at the same height as the upper surface of the top plate 12. , Bottom plate 23 or bottom plate 24 may be raised. When the first gripper 31 is lowered to reach the reference height, a single carry-out cloth on the top of the stacked carry-out cloths 110 may be gripped.

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

  In step S12, the carry-out cloth 110 is positioned. In the sewing device 10, the step of positioning the carry-out cloth 110 is performed by the positioning unit 40. In the positioning unit 40, the carry-out cloth 110 placed on the upper surface of the positioning table 41 by the first gripper 31 is pushed by the pushing 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 plane 42a along the X direction. In addition, it is aligned along the Y direction toward the center of the positioning table 41 by the pair of alignment pawls 44 and 45. Due to the movement of the pressing claw 43 and the pair of width adjustment claws 44, 45, the shape slightly recessed from the both sides toward the center at one end of the carry-out cloth 110 is slightly reduced from the both sides toward the center in the reference surface 42a. The carry-out cloth 110 is positioned in the X and Y directions so as to be brought into contact corresponding to the protruded shape. When the carry-over cloth 110 is positioned, the push claw 43 and the pair of width adjustment claws 44, 45 retract to their original positions. The positioned carry-out cloth 110 has the same direction as the carry-out cloth stored in the first magazine 21 and the second magazine 22 in the XY plane, as shown in FIG. 7A.

  In the positioning table 41 of the present embodiment, the push claw 43 can move along the X direction, and one pair of width adjustment claws can move along the Y direction. Therefore, even the carry-out cloth 110 having different sizes can be easily coped with by appropriately moving the push claw 43 and the pair of width adjustment claws 44, 45. The height of the positioning table 41 can be adjusted, for example, for receiving the carry-out cloth 110 from the first gripper 31 by moving the positioning table 41 in the vertical direction by an actuator (not shown).

  In step S13, the carry-out cloth 110 is folded. In the sewing device 10, the step of folding the carry-out cloth 110 is performed by the folding unit 50. FIG. 8 is a flow chart showing a series of steps of folding the carry-out cloth.

  In step S21, the carry-out cloth 110 is placed at the first position P1 on the top surface of the top plate 12. When the second gripper 32 of the supply / conveyance unit 30 grips the carry-out cloth 110 placed and positioned on the upper surface of the positioning table 41, the second gripper 32 ascends with the gripped carry-out cloth 110 to Y just above the first position P1. It moves along the direction, descends until it reaches a predetermined distance from the first position P1 on the top surface of the top plate 12, and releases the carry-out cloth 110 to be placed on the first position P1. The carry-over cloth 110 may be placed such 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 second gripper 32 suctions and holds the carry-out cloth 110 with a vacuum, and releases the carry-out cloth 110 by stopping suction by the vacuum. The carry-over cloth 110 placed at the first position P1 is maintained in the XY plane when it is positioned by the positioning table 41 as shown in FIG. 7A.

  In this embodiment, a vacuum gripper is used for the second gripper 32, and the positioning accuracy of the carry-out cloth 110 is secured by adsorbing the entire surface of the gripper. In addition, the suction in the vacuum gripper may not be performed on the entire surface, and depending on the material of the carry-out cloth 110, the suction may be partially performed.

  FIG. 9 is a top view showing a state in which the carry-out cloth 110 is placed at the first position P1 in the folding unit 50. As shown in FIG. The folding unit 50 folds the other half of the carry-out cloth 110 by folding it back at the first fold line 110 b. In addition, a folding plate 52 for holding and holding the folded-out carrying cloth 110 in half on the lower surface, and a pressing tool 62 for holding and holding the side edge 110 c on which the folded-out carrying cloth 110 is overlapped on the lower surface, And a folding plate 53 for folding one end of the cloth 110. The first pressing plate 51 extends in the longitudinal direction of the carry-out cloth 110 and extends along a first reference side 51a corresponding to the first fold line 110a and one end of the carry-out cloth 110 to form a second fold line And a second reference side 51b corresponding to 110b.

  The first pressing plate 51 is driven by the actuator 55 in the elevating direction and by the actuator 54 in the Y direction. The first pressing plate 51 may be configured by two parallel layers of plates facing each other across a predetermined gap. The gap formed by the two layers of plates may be formed such that one end of the carry-over fabric 110 can be folded by the folding plate 53. Also, the thickness of the first presser plate 51 may be optimized to fold the carry-over cloth 110. The optimized thickness may be determined by repeating the experiment. The folding plate 52 can be stored in the top plate 12 so that the upper surface thereof is in the upper surface of the top plate 12 and is driven by the actuator 58 in the elevating direction by the actuator 57 along the Y direction.

  The presser 62 has a central presser portion 64 and presser portions 65 on both sides along the X direction, and is supported by the support base 63. The central pressing portion 64 and the pressing portions 65 on both sides are independently driven in the vertical direction by the actuators 67 and 68, and are driven in the X direction by the common actuator 69. The support base 63 has a predetermined height from the top surface of the top 12 and forms a predetermined gap with the top surface of the top 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 constituted by two plates parallel to each other with a predetermined gap.

  In the carry-out cloth 110 placed at the first position P1 on the upper surface of the top plate 12, one half of the fold line 110a extending in the longitudinal direction of the carry-out cloth 110 has a gap between the first presser plate 51. , And the other half is also supported by the top surface of the folding plate 52 stored in the same plane as the top surface of the top plate 12. The position of the carry-out cloth 110 in the X and Y directions at the first position P1 is ensured in accuracy by the positioning process of step S12.

  In step S22, one side half of the carry-out cloth 110 is pressed by the first pressing plate 51. FIG. 10 is a top view showing a state in which a half of one side of the carry-out cloth in the folding portion 50 is pressed by the first pressing plate 51. As shown in FIG. The first presser plate 51 secures the bending at the first fold line 110a of the carry-out cloth 110 by the first reference side 51a, and the bend at the second fold line 110b of the carry-out cloth 110 by the second reference side 51b. So as to ensure that one side half of the carry-out cloth 110 is held and held by the lower surface.

  In step S23, the other half of the carry-out cloth 110 is folded back by the turnback plate 52, and the carry-out cloth 110 is folded in half. FIG. 11 is a top view showing a state in which the other half of the carry-out cloth 110 in the folding portion 50 is folded back by the folding back plate 52. The folding plate 52 lifts the upper surface so that the other half of the carry-out cloth 110 supported by the upper surface stored in the same plane as the upper surface of the top plate 12 rises, and then the first pressing plate 51 is interposed. The other half of the carry-out cloth 110 is pushed by the lower surface so as to be folded back onto one half of the carry-out cloth 110. Here, since the first fold line 110a of the carry-out cloth 110 is secured by the first reference side 51a of the first pressing plate 51, the folding cloth 110 at the first fold line 110a is secured in two. Be done. The folded-out take-off cloth 110 may be the front of the cloth on the outside and the back of the cloth on the inside. In the folded-over carrying cloth 110, the edge of one half overlaps the edge of the other half to form a side edge 110c. FIG. 7B shows the carrying cloth 110 folded in half in the XY plane.

  In step S24, the side edge 110c of the carry-out cloth 110 folded in half is pressed by the holding tool 62. FIG. 12 is a top view showing a state in which the side edge portion 110 c of the carry-out cloth 110 in the folding portion 50 is held by the holding tool 62. The presser 62 presses and holds the side edge 110 c of the carry-out cloth 110 with the lower surface. In the presser 62, the presser parts 65 on both sides press only the side edge 110c of the carry-out cloth 110, while the central presser part 64 is folded between one half and the other half of the carry-out cloth 110. The side edge 110 c is pressed with the plate 52 interposed therebetween. Therefore, the lower surface of the central pressing portion 64 is adjusted to be at a proper position higher than the lower surfaces of the pressing portions 65 on both sides.

  In step S 25, one end of the folded-out carrying cloth 110 is folded by the folding plate 53. FIG. 13 is a top view showing a state in which one end of the carry-out cloth 110 is folded by the folding plate 53 in the folding portion 50. FIG. The folding plate 53 brings one end of the folded-out carrying cloth 110 out and folds the inside of the half-folded surface of the carrying-out cloth 110. One end of the carry-out cloth 110 is folded inward to the carry-out cloth 110 which is folded in half to form a fold-in portion 110 d. When the folding operation is finished, the folding plate 53 is pulled out of the carry-over cloth 110 and returns to the original position. Here, since the second fold line 110b of the carry-out cloth 110 is secured by the second reference side 51b of the first pressing plate 51, the folding of the carry-out cloth 110 at the second fold line 110b is secured. Ru. FIG. 7C shows the carry-out cloth 110 in which the folded portion 110d is formed by being folded at one end with the second fold line 110b in the XY plane.

  In step S26, the first pressing plate 51 and the folding plate 52 are pulled out from the folded out carrying cloth 110. FIG. 14 is a top view showing a state in which the first pressing plate 51 and the folding plate 52 are pulled out of the carry-out cloth 110 at the folding portion 50. As shown in FIG. The first presser plate 51 and the folding plate 52 are pulled out from the folded carry-over cloth 110, and the carry-out cloth 110 is held by the presser 62 pressing the side edge portion 110c. In the presser 62, the folding plate 52 held between the half on one side and the half on the other side of the carry-out cloth 110 is pulled out, so that the presser portion 64 at the center has heights of the presser portions 65 at both ends and the lower surface. It is adjusted to descend until it becomes approximately equal.

  The presser 62 presses and holds the side edge 110c of the carry-out cloth 110 with the lower surface, and slides the upper surface of the top plate 12 to send it to the second position P2. In FIG. 9, the carrying-out cloth 110 which has been fed to the second position P2 by the holding tool 62 is indicated by an imaginary line. The carry-over 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 pressing plate 51, the folding plate 52, and the folding plate 53 of the folding unit 50 are disposed to surround the first position P1 at which the carry-out cloth 110 is disposed. It protrudes to the position P1 of 1 and folds the carry-out cloth 110. Therefore, the folded portion 50 of the present embodiment can easily cope with the carry-out cloths 110 of different sizes. Further, since the first pressing plate 51, the folding plate 52, and the folding plate 53 of the folding unit 50 can also move in the elevating direction, they can 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-off cloth 110 is sewn. Referring to FIGS. 2 and 3, the second pressing plate 71 receives the carry-out cloth 110 sent to the second position P 2 of the upper surface of the top plate 12 by the holding tool 62, and the first folding of the carry-out cloth 110. The side of the wire 110a is held by the lower surface and held. When the take-off cloth 110 is transferred to the second pressing plate 71, the presser 62 ascends from the side edge 110 c of the carry-out cloth 110 to release the carry-out cloth 110.

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

  The second pressing plate 71 slides the upper surface of the top plate 12 of the carry-out cloth 110 held at the third position P3 and advances it in the X direction, and the side edge 110 c of the carry-out cloth 110 by the first sewing machine 13 The overlock sewing is guided and sent to the fourth position P4 after finishing the sewing. In the second pressing plate 71, the side edge 110 c of the carry-out cloth 110 is directly below the sewing portion of the first sewing machine 13 so that the side edge 110 c of the carry-out cloth 110 is properly sewn by the first sewing machine 13. Guide to advance at a predetermined speed. The overlock sewing by the first sewing machine 13 may be by three needles or four needles, and even if it has a back tack function in which an empty ring is inserted inside and sewn at the beginning of sewing by the empty ring suction device Good. By the back tack sewing, the sewing strength can be enhanced and the appearance can be improved. The carry-over cloth 110 which has reached the fourth position P4 has the side edge 110c sewn in the XY plane as shown in FIG. 7 (e).

  In the present embodiment, the second pressing plate 71 of the first feeding unit 70 is movably supported in the X and Y directions by the support 76 extending in the X direction and the support member 72 extending along the Y direction. Therefore, the first feeder 70 of the present embodiment can easily cope with the carry-out cloths 110 of different sizes.

  When the carry-over cloth 110 is fed to the fourth position P4, the third presser plate 81 receives it and holds the side edge 110c of the carry-out cloth 110 by its lower surface and holds it. When the second pressing plate 71 transfers the carry-out cloth 110 to the third holding plate 81, the second holding plate 71 ascends from the side of the first folding line 110a of the carry-out cloth 110 and releases the carry-out cloth 110. The third pressing plate 81 slides the upper surface of the top plate 12 of the carry-out cloth 110 held at the fourth position P4 to advance it in the X direction, and moves to the fifth position P5. The carry-over cloth 110 moved to the fifth position P5 is as shown in FIG. 7E in the XY plane.

  Then, the third presser plate 81 slides the upper surface of the top plate 12 so that the carry-out cloth 110 held at the fifth position P5 rotates clockwise, for example, clockwise over the axis of the motor 74, Move to position P6 of. Here, as the predetermined angle for rotating the carry-out cloth 110, the side edge 110c at the fifth position P5 shown in FIG. 7 (e) extends along the X direction and moves the carry-out cloth 110 toward the Y direction. As shown in f), the second fold line 110b is an angle that extends along the X direction and is rotated toward the Y direction. For example, the predetermined angle may be 100 ° to 120 ° clockwise.

  In step S15, the folded portion 110d of the brought-out cloth 110 which has been folded is sewed. The fourth pressing plate 91 receives the carry-out cloth 110 sent to the fifth position P5 on the upper surface of the top plate by the third holding plate 81, and the carry-out cloth 110 is exposed such that the folding portion 110d of the carry-out cloth 110 is exposed. Hold down on the lower side and hold. When the carry-over cloth 110 is transferred to the fourth hold-down plate 91, the third presser plate 81 ascends from the side edge 110c of the carry-out cloth 110 and releases the carry-out cloth 110.

  The fourth presser plate 91 slides the upper surface of the top plate 12 of the carry-out cloth 110 held at the sixth position P6 and advances it in the X direction, so that the book of the folding portion 110 d of the carry-out cloth 110 by the second sewing machine 14 is read. The sewing by the sewing is guided, and after finishing the sewing, the second sewing machine 14 further advances in the X direction and sends it to the seventh position P7. In the fourth pressing plate 91, the folding portion 110d of the carry-out cloth 110 is specified immediately below the sewn portion of the second sewing machine 14 so that the fold-in portion 110d of the carry-out cloth 110 is appropriately sewn by the second sewing machine 14. Guide you to go at a speed of The lock stitch by the second sewing machine 14 may be a reverse stitch at the end of sewing on the side of the first fold line 110a. The fourth pressing plate 91 may guide the carry-out cloth 110 so that the carry-out cloth 110 advances in the direction opposite to the X direction when performing reverse stitching.

  The carry-over cloth 110 which has been sewed by the second sewing machine 14 and has reached the seventh position P7 has the shape of a carry-out part in the XY plane as shown in FIG. 7 (g). The seventh position P7 may be a position advanced from the sewing portion of the second sewing machine 14 by a predetermined distance in the X direction. When the carry-over cloth 110 is sent to the seventh position P7, the fourth pressing plate 91 ascends from the side of the first folding line 110a of the carry-out cloth 110 and releases it, and the carry-out cloth 110 is placed.

  The fifth presser plate 92 holds the carry-out cloth 110 placed at the seventh position P7 by the fourth presser plate 91 with its lower surface, slides the upper surface of the top plate 12, and advances in the X direction The carry-over cloth 110 is made to reach the opening 12 a of the top 12. Here, the fifth pressing plate 92 cuts the lock stitch and then sucks the yarn by a suction vacuum (not shown) provided at a predetermined position. The fifth presser plate 92 and the suction vacuum constitute a yarn processing unit which sucks a yarn from the carry-out cloth 110 which is lock stitched by the second sewing machine 14 and suctions the yarn. The carry-over cloth 110 that has reached the opening 12 a drops from the top plate 12 and is received by a container (not shown).

  In the present embodiment, the third feed unit 90 drives the fourth pressing plate 91 and the fifth pressing plate 92 in the X direction via the common support member 95. Therefore, the third feeding portion 90 of the present embodiment is a guide for sewing by the second sewing machine 14 of the folding portion 110 d of the carry-out cloth 110 by the fourth pressing plate 91 and a second by the fifth pressing plate 92. The conveyance of the carry-out cloth 110 which has finished the sewing of the folding portion 110d by the sewing machine 14 can be efficiently performed at the same timing according to the same timing. In addition, 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.

  According to a series of processes from step S11 to step S14, the side edge portion 110c of the carry-out cloth 110 can be overlock-sewn, and the fold-in portion 110d can be sewn to sew a carry-out part. Since the sewing of the brought-out parts is automated without manual operation, the quality of the brought-out parts can be stabilized and the amount of sewing can be increased.

  In the present embodiment, supply of carry-out cloth in step S11 shown in the flowchart of FIG. 6, positioning in step S12, folding in the position of step S13, sewing of side edge portion 110c in step S14 and folding portion in step S15. By performing each step of sewing in synchronization with a predetermined timing, the operation in the sewing device 10 can be advanced without interruption in parallel. This timing may be set based on the speed at which the carry-out cloth is sewn by the first sewing machine 13 and the second sewing machine 14.

  The sewing device 10 according to the present embodiment can easily cope with the carry-out cloths 110 of different sizes by changing the carry-out cloths 110. For example, sewing of a 27-inch to 42-inch carry-out part of jeans or slacks can be supported. In the sewing device 10 according to the present embodiment, the changing by size of the carry-out cloth 110 is performed by replacing the first magazine 21 and the second magazine 22 storing the carry-out cloth 110 and positioning the pick-up cloth 110. It does by switching the setting value of. These settings may be changed by operating the control board 19 and calling the stored size in a control unit (not shown). Similarly, by changing the setting of the positioning unit 40, the centering positioning can also be changed.

DESCRIPTION OF SYMBOLS 10 sewing apparatus 11 gantry 12 top plate 13 1st sewing machine 14 2nd sewing machine 20 carry-out cloth storage part 21 1st magazine 22 2nd magazine 30 supply conveyance part 31 1st gripper 32 2nd gripper 40 positioning part 41 Positioning Table 50 Folded Part 51 First Holding Plate 52 Folded Back Plate 53 Folded Plate 70 First Feeding Part 71 Second Holding Plate 80 Second Feeding Part 81 Third Holding Plate 90 Third Feeding Part 91 4 holding plate 92 fifth holding plate 110 carry-out cloth P1 to P7 Position of carry-out cloth in each process

Claims (11)

A sewing device for sewing a carry-out cloth to a carry-out part of a trouser,
A gantry having a top plate,
Attached to the side of the front Symbol cradle, open at the top, and brought out the fabric storage unit for storing stacked takeout cloth,
A positioning table which is provided on the gantry and places and carries out a carry-out cloth on the upper surface;
A first gripper for gripping and taking out the carry-out cloths stored in the carry-out cloth storage unit one by one and placing them on the positioning table;
A second gripper that holds a carry-out cloth placed and positioned on the positioning table and placing it on a first position of the top plate;
The carry-out cloth placed at the first position is folded in half at a first fold line extending in the longitudinal direction, and one end of the fold-out carry-out cloth is folded at a second fold line extending along the one end And the fold,
A first sewing machine for sewing the side edge of the carry-out cloth folded in half at the folding portion;
And a second sewing machine for sewing the folded-in portion of the carry-out cloth folded in at the folding portion. The folding unit is
A first pressing plate for pressing and holding a half of one side of the carry-out cloth placed at the first position;
A fold-back plate which is folded at a first fold line so as to lift the other half of the carry-out cloth and overlap it on one half;
A presser for pressing and holding the side edge of the carrying-out cloth folded in half on one side by the folding plate;
The sewing apparatus according to claim 1, further comprising: a folding plate that folds one end of the carry-out cloth held by the first pressing plate and the pressing tool at a second folding line.   The sewing apparatus according to claim 2, wherein the first pressing plate includes two layers of plates facing each other across a gap. The thickness of the first pressing plate is determined by folding one end of the folded-out carrying cloth between the two layers of the first pressing plate with the folding plate to obtain one end of the folded-out cloth. 4. The sewing apparatus according to claim 3 , wherein the sewing machine is optimized to fold in the second fold line to fold the carry-out cloth.   The sewing apparatus according to any one of claims 1 to 4, wherein the first sewing machine has a function of overlock sewing the side edge portion of the carry-out cloth and sucking an empty ring at the beginning of sewing.   The sewing apparatus according to any one of claims 1 to 4, wherein the second sewing machine performs lock stitching on a fold-in portion of the carry-out cloth.   The sewing apparatus according to claim 6, further comprising: a yarn processing unit configured to cut the suctioned yarn with vacuum from the folded-in cloth stitched with the second sewing machine. The positioning table is
A reference surface facing and in contact with the carry-out cloth placed on the upper surface,
A pushing claw pressing a carry-out cloth against the reference surface;
The sewing apparatus according to any one of claims 1 to 7, further comprising: a pair of opposing width adjustment claws for moving the carry-out cloth parallel to the reference surface. A first feeding unit which receives a carry-out cloth from the first position, feeds the carry-out cloth a half turn along the upper surface of the top plate, and guides the sewing by the first sewing machine;
A second feeding unit which receives a carry-out cloth from the first feeding unit, sends it along an upper surface of the top plate, and rotates it by a predetermined angle;
The sewing apparatus according to any one of claims 1 to 8, further comprising: a third feeding unit which receives a carry-out cloth from the second feeding unit and guides sewing by the second sewing machine.   10. The first gripper and the second gripper according to any one of claims 1 to 9, wherein the first gripper and the second gripper are a needle gripper that holds the carry-out cloth by taking in and out the needle from the lower surface or a vacuum gripper that suctions the carry-out cloth by vacuum. The sewing device described in. The sewing apparatus according to any one of claims 1 to 10, wherein the carry-out cloth storage unit includes a plurality of magazines that stack and store carry-out cloths.

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