Sewing clamp for opening piece

Abstract

The utility model provides an opener sewing jig which can reliably hold an element row member including a core wire and fastener elements on a sewing machine together with an object to be sewn. The opening piece sewing jig is used for sewing opening pieces of a pair of zipper tooth row components with a plurality of zipper teeth along a pair of left and right core wires to a sewn object. Comprising a flat-plate-shaped base part; and a holding member provided so as to be openable / closable with respect to the base portion. The base part comprises a clamping tooth part which is meshed with a driving gear of the sewing machine for sewing; an element positioning unit for positioning the element row of the element row member; and a rod part positioning part for positioning the rod part of the opening member positioned at the end part of the chain tooth row member. The holding member holds the object to be sewn between the holding member and the base portion in a state in which the chain tooth row member and the rod portion thereof are fixed to the chain tooth positioning portion and the rod portion positioning portion, and keeps the distance between the rod portion and the edge of the object to be sewn constant.

Description

Technical Field

[0001] The utility model relates to an opening piece sewing clamp used when sewing an opening piece of a pair of fastener teeth row components respectively equipped with a plurality of zipper fastener teeth along a pair of left and right core lines to a sewn object. Background Art

[0002] In the past, there was a tooth array component having a plurality of zipper teeth installed along a pair of left and right core lines, and the tooth array component was directly sewn to the sewn object, and it was sometimes used as a zipper. The tooth array component, chain component, and product with a zipper of Patent Document 1 have: a rope-shaped fixing component that serves as a core line, a plurality of zipper teeth installed on the fixing component, and a component part that forms a part of a detachable opening member. The component part is provided with a component body part formed by wrapping the fixing component inside, and a fin part for sewing that extends from the component body part in the shape of a thin plate. Moreover, the fin part can be sewn to the sewn object by using a sewing machine, and the opening member can be sewn on.

[0003] In addition, Patent Document 2 discloses a sewing machine for sewing such a tooth array component to a workpiece. The sewing machine includes: a sewing machine frame having a sewing machine base; a vertical movement mechanism for moving a sewing needle up and down relative to a workpiece on a needle plate provided on the sewing machine base and dropping the needle while swinging the sewing needle left and right; a cloth feeding mechanism for conveying the workpiece from the lower side of the needle plate to a predetermined cloth feeding direction by means of a feeding tooth; a kettle mechanism for winding a lower thread relative to an upper thread of the sewing needle; and a tooth belt conveying mechanism for conveying a snap-fit ​​connection body of a zipper as a tooth array component.

[0004] [Prior art literature]

[0005] [Patent Document]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2022-38070

[0007] [Patent Document 2] Japanese Patent Application Publication No. 2019-72466 Utility Model Content

[0008] [Problems to be solved by the utility model]

[0009] If a gap is provided between the opening piece of the zipper and the edge of the sewn object, the operability becomes good. However, when the sewing object is sewn using the sewing machine of Patent Document 2, it is impossible to sew the chain element member of Patent Document 1 of the background art with a gap accurately left between the opening piece and the edge of the sewn object. Therefore, after sewing, when passing through the slider, the sewn object contacts and meshes with the slider, sometimes hindering the movement of the slider or damaging the sewn object.

[0010] The utility model is developed in view of the problems of the above-mentioned background technology, and its purpose is to provide an opening piece sewing clamp, which can reliably hold a chain tooth array component including a core thread and a zipper chain tooth together with the sewn object on a sewing machine, and sew with a gap between the opening piece of the chain tooth array component and the sewn object.

[0011] [Technical means to solve the problem]

[0012] The utility model relates to an opening piece sewing clamp, which is used for sewing the opening piece of a pair of chain tooth array components, each of which has a plurality of zipper chain teeth installed along a pair of left and right core lines, to an object to be sewn. The opening piece sewing clamp comprises: a flat base portion; and a retaining member, which is openably / closably arranged relative to the base portion, and the base portion is provided with: an engaging tooth portion, which is integrally arranged on the base portion and meshes with a driving gear of a sewing machine for sewing; a chain tooth positioning portion, which is arranged on the surface of the base portion and positions the chain tooth array of the chain tooth array component; and a rod positioning portion, which is arranged on the surface of the base portion and positions the rod portion of the opening piece located at the end of the chain tooth array component, and the retaining member, when the chain tooth array component and its rod portion are fixed to the chain tooth positioning portion and the rod positioning portion, clamps the object to be sewn between the base portion and maintains the distance between the rod portion and the end edge of the object to be sewn constant.

[0013] The rod portion of the opening member of the pair of chain tooth array components includes an insert rod and a seat rod installed with a seat portion, and the base portion is arranged in a pair to constitute a pair of base portions, wherein the rod portion of one of the base portions is formed into a shape in which the insert rod is positioned by a positioning portion, and the rod portion of the other base portion is formed into a shape in which the seat rod is positioned by a positioning portion.

[0014] The rod positioning portion of the pair of base portions includes a protrusion, and the protrusion is respectively arranged to position only one of the insert rod and the seat rod. The retaining member has an opening portion, and the opening portion exposes a portion of the end edge of the sewn object when the end edge of the sewn object is retained between the base portion, and the retaining member is arranged to be freely swingable to open / close relative to the base portion, and the end edge of the sewn object can be visually recognized in the opening portion when it is closed to the base portion. The tooth positioning portion and the rod positioning portion of the pair of base portions are formed in a groove shape on the surface of the base portion, and the protrusion is provided on the rod positioning portion.

[0015] The rod parts of the pair of chain tooth array components are respectively provided with fin parts for sewing formed integrally with the rod parts, and a through hole is formed in the base part between the chain tooth positioning part and the rod part positioning part, and the through hole is connected with the opening part when the retaining member is closed relative to the base part. When the sewn object is retained between the base part and the retaining member, the rod part of the chain tooth array and the fin part for sewing are sewn to the sewn object, and the sewing needle passes through the through hole and the opening part to sew the chain tooth array to the sewn object.

[0016] In the pair of base parts, at a position where the rod portion positioning part for positioning the insert rod and the rod portion positioning part for positioning the seat rod are at different distances from one end portion of the base part and the distance from the one end portion to the sewing needle is equal, the opening portion and the through hole can be penetrated, so that the pair of chain tooth row components can be sewn using the sewing needle in the same manner.

[0017] [Effects of the utility model]

[0018] The opening piece sewing fixture of the utility model can reliably hold the chain tooth array component including the core thread and the zipper chain teeth together with the sewn object on the sewing machine, and sew with a gap between the opening piece of the chain tooth array component and the sewn object. The operator can simply make a fine adjustment on the sewing position of the opening piece and the sewn object. Thus, it is prevented from contacting the sewn object when passing through the slider after sewing, and the operability becomes good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 (a) is a perspective view showing a pin-side chain element row clamp of an opening tool sewing clamp 10 according to an embodiment of the present invention. Figure 1 (b) is a perspective view showing a seat bar side element row jig of the opening tool sewing jig 10 according to one embodiment of the present invention.

[0020] Figure 2 It is a plan view showing the base portion of the insert side element row jig according to the present embodiment.

[0021] Figure 3 It is a plan view showing a state where an element row member is placed on a base portion of the insert side element row jig according to the present embodiment.

[0022] Figure 4 This is a plan view showing a state in which an element row member and a workpiece are placed on a base portion of the insert-side element row jig of the present embodiment and a holding member is closed.

[0023] Figure 5 (a) is a plan view of the insert side chain tooth array fixture of this embodiment, Figure 5 (b) a longitudinal cross-sectional view of the insert side chain element clamp of the present embodiment taken along line AA, Figure 5 (c) is a longitudinal cross-sectional view of the insert side element row fixture taken along line BB according to the present embodiment.

[0024] Figure 6 It is a plan view showing the base portion of the seat bar side element array jig according to the present embodiment.

[0025] Figure 7 It is a plan view showing a state where the element row member is placed on the base portion of the seat bar side element row jig of the embodiment.

[0026] Figure 8 This is a plan view showing a state in which an element row member and a workpiece are placed on a base portion of the seat bar side element row clamp of the present embodiment and a holding member is closed.

[0027] Fig. 9 (a) is a plan view of the seat bar side chain tooth array fixture of this embodiment, Fig. 9 (b) is a longitudinal sectional view taken along line CC of the seat bar side element row clamp according to the present embodiment.

[0028] [Explanation of Symbols]

[0029] 10: Open the sewing fixture

[0030] 10a: Rod side chain tooth clamp

[0031] 10b: Seat bar side chain tooth clamp

[0032] 12: Core wire

[0033] 14: Zipper teeth

[0034] 16: Chain tooth row components

[0035] 16a: Insert side chain teeth

[0036] 16b: Seat bar side chainring

[0037] 18: Open the file

[0038] 20: Sewn objects

[0039] 20a, 20b: End edge

[0040] 20c: End edge

[0041] 22: Insert the rod

[0042] 24: Seat rod

[0043] 26: Guidance

[0044] 28: Insert side engagement portion

[0045] 29: Seat rod side engagement part

[0046] 30: Guide surface

[0047] 32: Fin part for seaming

[0048] 34: Abutment part

[0049] 36: Lower base plate

[0050] 36a, 38a, 40a, 40d, 58a: side edge

[0051] 36b, 38b, 38c, 40b, 40c: End

[0052] 38: Middle base plate

[0053] 40: Upper base plate

[0054] 42: Engagement teeth

[0055] 44: Through port

[0056] 46: Positioning part for rod

[0057] 46a, 48a: Inner wall

[0058] 48: Chain tooth positioning part

[0059] 50: Stopper

[0060] 52: Operating Space

[0061] 54: Protrusion for inserting rod

[0062] 56: Bearing convex part

[0063] 58: Keep components

[0064] 60: Opening

[0065] 62: Shaft hole

[0066] 64: Shaft component

[0067] 66: Protrusion for seat bar

[0068] 68: Drive gear

[0069] 70: Sewing thread DETAILED DESCRIPTION

[0070] Hereinafter, embodiments of the present invention will be described based on the drawings. Figure 1 (a)~ Fig. 9(b) shows an embodiment of the present invention, in which the opening piece sewing fixture 10 of the present embodiment sews the opening piece 18 of a pair of chain element array components 16 respectively equipped with a plurality of zipper chain elements 14 along a pair of left and right core lines 12 to the sewn object 20. The opening piece 18 includes a pair of rod portions, one of which is an insert rod 22, and the other is a seat rod 24 equipped with a seat portion. One of the pair of chain element array components 16 is an insert rod side chain element array 16a equipped with an insert rod 22, and the other is a seat rod side chain element array 16b equipped with a seat rod 24.

[0071] An insert rod 22 or a seat rod 24 is provided at the end of the insert rod side chain tooth row 16a and the seat rod side chain tooth row 16b, and the core wire 12 at the front end side of the core wire 12 has a guide portion 26 provided with a plurality of zipper chain elements 14 across the insert rod 22 or the seat rod 24. A stopper (not shown) is provided at the end opposite to the guide portion 26 of each chain element row member 16 of a pair of core wires 12.

[0072] The insert rod 22 has a substantially rectangular parallelepiped portion formed by wrapping the core wire 12 inside, and has a thickness equal to the thickness of the zipper element 14 and a width equal to the maximum value of the width of the zipper element 14. Here, the so-called thickness direction refers to a direction orthogonal to the length direction of the element row member 16 and the left and right directions of the pair of left and right element row members 16. Thus, when the insert rod side element row 16a is sewn to the sewn object 20 using a sewing machine, the insert rod 22 can be sewn while being smoothly fed like the zipper element 14.

[0073] On the rectangular portion of the insert rod 22, a guide surface 30 formed by a step is provided on one of a pair of side surfaces along the length direction and orthogonal to the thickness direction, i.e., on the outer surface. The guide surface 30 is a step portion formed by slightly thinning the thickness of the insert rod 22, and is a plane inclined at a predetermined angle relative to the length direction of the chain tooth array member 16, and can be aligned along the end edge 20a when sewn to the end edge 20a of the sewn object 20. The guide surface 30 is inclined in a direction moving about 1 mm toward the outside of the chain tooth array member 16 at the end portion on the guide portion 26 side. On the side opposite to the guide surface 30 of the roughly rectangular shape, there is provided an insert rod side engaging portion 28 that protrudes in the same manner as the zipper chain element 14 toward the side in the length direction, i.e., in the width direction which is the left-right direction of the chain tooth array member 16 in the assembled state.

[0074] The seat bar 24 also has a substantially rectangular parallelepiped portion formed by wrapping the core thread 12 inside, and has the same thickness as the thickness of the zipper element 14 and the same width as the maximum width of the zipper element 14. Thus, when the seat bar side element row 16b is sewn to the sewn object 20 using a sewing machine, the seat bar 24 can be sewn while being smoothly fed like the zipper element 14. The seat bar 24 is formed to be shorter in length than the insert bar 22.

[0075] In the roughly rectangular portion, a guide surface 30 similar to the insert rod 22 is formed on one of a pair of side surfaces along the length direction and facing the thickness direction. The guide surface 30 of the seat rod 24 is also a plane inclined at a predetermined angle relative to the length direction of the chain tooth array member 16, and can be aligned along the end edge 20b when sewn to the end edge 20b of the sewn object 20. The guide surface 30 is inclined in a direction moving about 1 mm toward the outside of the chain tooth array member 16 at the end portion on the guide portion 26 side. On the side opposite to the guide surface 30 of the roughly rectangular shape, there is a seat rod side engaging portion 29 that protrudes toward the side in the length direction, that is, in the width direction of the chain tooth array member 16 in the assembled state, in the same manner as the zipper chain element 14.

[0076] On the guide surfaces 30 of the insert rod 22 and the seat rod 24, fin portions 32 for sewing are integrally extended toward the outside in the width direction of the tooth array member 16. The fin portions 32 for sewing are plates having a surface orthogonal to the thickness direction of the tooth array member 16, and have a constant thickness and are smaller than the thickness of the roughly rectangular parallelepiped portion of the insert rod 22 and the seat rod 24, and are connected to the center portion in the thickness direction of the roughly rectangular parallelepiped portion. The fin portions 32 for sewing have a roughly rectangular shape when viewed from above in the thickness direction, and have roughly circular ear hook portions protruding laterally at the two corners, and have three openings for sewing that penetrate in the thickness direction.

[0077] The chain element array member 16 is installed on a garment with a zipper, for example, and the sewn object 20 is a fabric forming the left and right front lapels as the opening and closing part of the garment. The insert-side chain element array 16a is sewn and installed at the end edges 20a and the end edges 20b of the fabric of the left and right front lapels facing each other, and the seat-side chain element array 16b is sewn and installed at the end edges 20b. The opening member 18 of the chain element array member 16 is installed at a predetermined position near the end edge portion 20c of the hem portion of the front lapels.

[0078] The opening piece sewing jig 10 used when sewing the opening piece 18 of the element row member 16 to the workpiece 20 by a sewing machine uses a pair of insert side element row jigs 10a for the insert side element row 16a and seat side element row jigs 10b for the seat side element row 16b.

[0079] First, based on Figure 1 (a) Figure 2 to Figure 5(c) describes the insert side chain tooth array fixture 10a. The insert side chain tooth array fixture 10a is made of metal and includes a flat base portion 34. The base portion 34 is a three-layer structure including a lower base plate 36 that abuts against the needle plate of the sewing machine, a middle base plate 38 stacked on the lower base plate 36, and an upper base plate 40 stacked on the middle base plate 38. The lower base plate 36, the middle base plate 38, and the upper base plate 40 are overlapped and installed by screws not shown in the figure.

[0080] The lower base plate 36 is a rectangular shape that is slightly long in one direction, and an engaging tooth portion 42 is provided at one of the side edges 36a along the length direction. The engaging tooth portion 42 protrudes outward from the side edge portion 36a by a predetermined width, and teeth that mesh with a drive gear 68 of the sewing machine described later are formed along the front end portion of the engaging tooth portion 42. A through hole 44 that penetrates in the thickness direction is provided near the side edge portion 36a. The through hole 44 is located at a position slightly closer to one of the ends 36b that intersects with the side edge portion 36a than the middle of the side edge portion 36a, and is rectangular in a plan view, and a portion of the side edge portion on the side of the side edge portion 36a is cut into a rectangular and concave shape on the side of the side edge portion 36a.

[0081] The middle base plate 38 has the same shape as the lower base plate 36 and is a slightly longer rectangle in one direction. A rod positioning portion 46 is provided near the side edge portion 38a that is consistent with the side edge portion 36a of the lower base plate 36 and passes through in the thickness direction. The rod positioning portion 46 is located near the end portion 38b that is consistent with the end portion 36b, and is a small rectangle in a plan view. When overlapping with the lower base plate 36, a portion of it is consistent with the through-hole 44 of the lower base plate 36. A tooth positioning portion 48 is provided continuously with the rod positioning portion 46. The tooth positioning portion 48 is also formed to pass through the middle base plate 38 in the thickness direction, and is a straight line of a specified width along the side edge portion 38a in a plan view. The inner wall 48a of the element positioning portion 48 on the side edge 38a side is consistent with the inner wall 46a on the side edge 38a side of the rod positioning portion 46, and the element positioning portion 48 extends to a predetermined length on both sides of the rod positioning portion 46. The length of the element positioning portion 48 extending from the rod positioning portion 46 is shorter on the end portion 38b side.

[0082] The inner wall 46a of the rod portion positioning portion 46 is provided with a rod inserting protrusion 54, which is a rod positioning portion for positioning the rod portion of the opening member 18 of the element row member 16. The rod inserting protrusion 54 is a protrusion protruding toward the center of the rod portion positioning portion 46, and is provided at a position overlapping with the element positioning portion 48 close to the end 38b when overlapping the lower base plate 36. The rod inserting protrusion 54 is formed in a shape in which the inserting rod 22 is positioned, and is a substantially triangular shape in a plan view, and is an isosceles triangle whose vertex protruding toward the center of the rod portion positioning portion 46 is close to the end 38b.

[0083] The upper base plate 40 is a slightly larger rectangle than the middle base plate 38, and when the side edge 40a is aligned with the side edge 38a and the end 40b is aligned with the end 38b, the end 40c located opposite to the end 40b protrudes further outward than the middle base plate 38. The side edge 40d located opposite to the side edge 40a is aligned with the side edge of the middle base plate 38. A rectangular stopper 50 is provided on the upper surface of the upper base plate 40 on the side opposite to the middle base plate 38 and aligned with the corner between the end 40c and the side edge 40d.

[0084] An operation space 52 that penetrates in the thickness direction is provided near the side edge 40a of the upper base plate 40. The operation space 52 is formed in the thickness direction of the upper base plate 40, and is a rectangle of a size that exposes the rod positioning portion 46 and the chain element positioning portion 48 of the middle base plate 38 when overlapping with the middle base plate 38 in a plan view. The inner wall of the operation space 52 close to the side edge 40a is consistent with the inner wall 48a of the chain element positioning portion 48 of the middle base plate 38. A bearing protrusion 56 is provided between the operation space 52 and the side edge 40a. The bearing protrusion 56 is detachably mounted on the upper surface of the upper base plate 40 by means of screws, etc., and keeps the shaft member rotatable in a manner substantially parallel to the side edge 40a.

[0085] When the lower base plate 36, the middle base plate 38, and the upper base plate 40 are overlapped to form the base portion 34, Figure 2 The rod positioning part 46 and the element positioning part 48 are located in the operation space 52 of the upper base plate 40 and are formed into a groove shape with the lower base plate 36 as the bottom. A part of the rod positioning part 46 is connected to the through hole 44 of the lower base plate 36.

[0086] The upper surface of the upper base plate 40 includes a holding member 58 that can be opened and closed freely with respect to the base portion 34. The holding member 58 maintains a closed state on the base portion 34 with appropriate strength. The holding member 58 is a rectangular plate body that is slightly long in one direction and is smaller than the base portion 34. An opening 60 is provided in one of the side edges 58a along the length direction. The opening 60 is formed to penetrate the thickness direction of the holding member 58. When the opening 60 overlaps with the upper base plate 40 in a plan view, it communicates with the rod positioning portion 46 of the middle base plate 38. The opening 60 is formed in a T-shape by continuously forming a horizontally long rectangular portion that is fitted with a gap that allows the bearing protrusion 56 to rotate and a small rectangular portion that is consistent with the rod positioning portion 46 of the upper base plate 40. An axial hole 62 that penetrates approximately parallel to the side edge 58a is formed near the side edge 58a. The shaft hole 62 is connected to the bearing protrusion 56. When the shaft member 64 is inserted into the shaft hole 62 and the bearing protrusion 56, the holding member 58 is swingably mounted on the upper surface of the upper base plate 40. The length of the holding member 58 along the side edge 58a is shorter than the operating space 52 of the upper base plate 40 when overlapping with the upper base plate 40. Figure 5 As shown in (a) of FIG. 5 , the operation space 52 is exposed on both sides of the holding member 58 , and the element positioning portion 48 is also exposed on the end portion 40 c side.

[0087] Next, based on Figure 1 (b) Figure 6 to Figure 9 (b) describes the seat rod side chain tooth array clamp 10b. The seat rod side chain tooth array clamp 10b is also made of metal, and is constructed in the same manner as the insert rod side chain tooth array clamp 10a, including a flat base portion 34. The base portion 34 is a three-layer structure including a lower base plate 36 that abuts against the needle plate of the sewing machine, a middle base plate 38 stacked on the lower base plate 36, and an upper base plate 40 stacked on the middle base plate 38. The lower base plate 36, the middle base plate 38, and the upper base plate 40 are overlapped and installed by screws not shown in the figure. The upper base plate 40 of the chain tooth array clamp 10b is smaller than the upper base plate 40 of the insert rod side chain tooth array clamp 10a, and has the same shape as the lower base plate 36 and the middle base plate 38.

[0088] The engaging tooth portion 42 and the through-hole 44 are formed on the lower base plate 36 of the seat bar side chain element array fixture 10b. The rod positioning portion 46 and the chain element positioning portion 48 are formed on the middle base plate 38. The length of the chain element positioning portion 48 of the seat bar side chain element array fixture 10b extending from the rod positioning portion 46 is longer on the end 38b side. The rod insertion protrusion 54 is not provided on the inner wall 46a of the rod positioning portion 46, but a seat bar protrusion 66 is provided as a seat bar positioning portion. The seat bar protrusion 66 is a protrusion protruding toward the center of the rod positioning portion 46, and is provided at a position overlapping with the chain element positioning portion 48 close to the end 38c opposite to the end 38b when overlapping on the middle base plate 38. The seat bar protrusion 66 is formed in a shape in which the seat bar 24 is positioned, and is trapezoidal in a plan view. The upper base plate 40 is provided with a stopper 50 , an operation space 52 , and a bearing protrusion 56 .

[0089] The upper surface of the upper base plate 40 includes a holding member 58 that is swingably opened / closed relative to the base portion 34, and the holding member 58 is provided with an opening 60. The length of the holding member 58 along the side edge 58a is shorter than the operation space 52 of the upper base plate 40 when overlapping with the upper base plate 40, as shown in FIG. Fig. 9 As shown in (a) of FIG. 5 , the operation space 52 is exposed on both sides of the holding member 58 , and the element positioning portion 48 is also exposed on the end portion 40 b side.

[0090] The insert side chain tooth array clamp 10a and the seat side chain tooth array clamp 10b have different shapes as described below. When a pair of insert side chain tooth arrays 16a and seat side chain tooth arrays 16b are respectively installed on the end edges 20a and 20b of the sewn object 20, the position of the zipper chain element 14 is on the side of the engaging tooth portion 42, so as to Figure 1 (a) Figure 1As shown in (b) and the like, the insert-side chain teeth 16a and the seat-side chain teeth 16b are installed in opposite directions in the length direction. In addition, the positions where the insert-side chain teeth 16a and the seat-side chain teeth 16b are installed in the insert-side chain teeth clamp 10a and the seat-side chain teeth clamp 10b are set to align with the engaging position of the opening member 18 in the use state. The setting is set so that the positions of the first stitches for starting sewing of the insert-side chain teeth 16a and the seat-side chain teeth 16b are at the same distance from the stopper 50. Therefore, the positions of the insert rod side chain tooth row 16a and the seat rod side chain tooth row 16b installed to the insert rod side chain tooth row clamp 10a and the seat rod side chain tooth row clamp 10b are different in the length direction, and the positions of the insert rod protrusion 54 and the seat rod protrusion 66 are set in such a way that the first stitch distance stopper 50 is equal when sewing the insert rod side chain tooth row 16a and the seat rod side chain tooth row 16b. Therefore, in each base portion 34 of the insert rod side chain tooth array clamp 10a and the seat rod side chain tooth array clamp 10b, at a position where the position of the stopper 50 and the protrusion 54 for the insert rod or the protrusion 66 for the seat rod is different and the distance from the stopper 50 to the sewing needle is equal, the opening portion 60 is connected with the through hole 44 and the positioning portion 46 for the rod portion, and the insert rod side chain tooth array clamp 10a and the seat rod side chain tooth array clamp 10b can be sewn using a sewing needle in the same manner.

[0091] Next, the method of using the opening piece sewing jig 10 is described. The opening piece sewing jig 10 is placed, for example, by placing the base portion 34 on the needle plate of the sewing machine at a position where the stopper 50 abuts against the guide and sensor screw included in the sewing machine disclosed in FIG. 11 and FIG. 13 of Patent Document 2. At this time, the driving gear 68 of the sewing machine meshes with the engaging tooth portion 42 provided on the side edge portion 40a.

[0092] When sewing the insert pin 22 of the insert pin side chain element row 16a, as shown in FIG. Figure 3 As shown, on the base portion 34 of the insert-side chain tooth array fixture 10a placed on the sewing machine, the insert-side chain tooth array 16a is placed in the chain tooth positioning portion 48 exposed from the operation space 52. The insert rod 22 is placed in the rod portion positioning portion 46, and is locked by abutting against the insert-side protrusion 54. The guide portion 26 of the insert-side chain tooth array 16a is located on the end portion 40b side and is accommodated in the chain tooth positioning portion 48. The front end on the opposite side to the guide portion 26 is located on the end portion 40c side of the stopper 50 side, and extends outward beyond the end portion 40c. As shown in FIG. Figure 4 As shown, the end edge 20 a of the workpiece 20 is placed along the insert-side element row 16 a , and the end edge 20 c of the workpiece 20 is aligned with the end of the insert 22 on the guide portion 26 side.

[0093] Then, the holding member 58 is closed to lock the insert rod side chain tooth row 16a with the sewn object 20. At this time, the insert rod 22 and the sewn object 20 are exposed from the opening 60 of the holding member 58. In a state where the sewn object 20 is clamped and held between the base portion 34 and the holding member 58, the operator pulls the sewn object 20 toward the side edge portion 40d near the end edge portion 20c in a manner that the end edge 20a of the sewn object 20 follows the guide surface 30 of the insert rod 22 to perform fine adjustment. While the object 20 to be sewn after the micro-adjustment is held between the base portion 34 and the holding member 58, the sewing machine is operated, the driving gear 68 is driven, the sewing needle penetrates the through hole 44 of the base portion 34, the positioning portion 46 for the rod portion, and the opening portion 60 of the holding member 58 and is driven, the opening sewing program is executed to sew, and the sewing fin portion 32 of the plunger 22 is sewn to the object 20 with the sewing thread 70. The end edge 20a of the object 20 to be sewn is sewed with a gap by moving the end edge 20c side outward by 1mm relative to the length direction of the plunger side chain tooth row 16a. The end edge 20a around the plunger 22 is separated and pressed by the sewing thread 70.

[0094] When the seat bar 24 of the seat bar side chain element row 16b is sewn, the same is true. Figure 7 As shown, in the base portion 34 of the seat bar side chain tooth array fixture 10b placed on the sewing machine, the seat bar side chain tooth array 16b is placed in the chain tooth positioning portion 48 exposed from the operation space 52. The seat bar 24 is placed in the rod portion positioning portion 46, and is abutted against the seat bar protrusion 66 to be locked. The guide portion 26 is located on the end portion 40c side and is accommodated in the chain tooth positioning portion 48. The end portion on the opposite side to the guide portion 26 is located on the end portion 40b side on the opposite side to the stopper 50, and extends outward beyond the end portion 40b. As shown in FIG. Figure 8 As shown, the end edge 20 b of the workpiece 20 is placed along the seat bar side element row 16 b , and the end edge 20 c of the workpiece 20 is aligned with the end of the seat bar 24 on the guide portion 26 side.

[0095] Then, the holding member 58 is closed to lock the seat bar side chain tooth row 16b and the sewn object 20. At this time, the seat bar 24 and the sewn object 20 are exposed from the opening portion 60 of the holding member 58. In a state where the sewn object 20 is clamped and held between the base portion 34 and the holding member 58, the operator pulls the sewn object 20 toward the side edge portion 40d near the end edge portion 20c in a manner that the end edge 20b of the sewn object 20 follows the guide surface 30 of the seat bar 24 to perform fine adjustment. In a state where the sewn object 20 after fine adjustment is held between the base portion 34 and the holding member 58, the sewing machine is operated, and the same opening piece sewing procedure as the insert bar side chain tooth row 16a is performed to sew, and the sewing fin portion 32 of the seat bar 24 is sewn to the sewing object 20 using the sewing thread 70. The edge 20 b of the workpiece 20 is sewn with a gap by shifting the edge 20 c side 1 mm outward in the longitudinal direction of the seat bar side element row 16 b. The edge 20 b around the seat bar 24 is separated and pressed by the sewing thread 70 .

[0096] Remove the insert-pin side chain tooth array 16a or the seat-bar side chain tooth array 16b that mounts the insert pin 22 or the seat-bar 24 on the sewn object 20 from the insert-pin side chain tooth array clamp 10a or the seat-bar side chain tooth array clamp 10b, and directly move the zipper chain teeth 14 using the driving gear 68 of the sewing machine to sew the zipper chain teeth 14 to the sewn object 20. Install the slider and the seat portion on the seat-bar side chain tooth array 16b. Thus, a zipper is formed. In addition, the sewing order may be other than that described above, and the sewing of the insert pin 22 or the seat-bar 24 may also be after the sewing of the zipper chain teeth 14.

[0097] By means of the opening piece sewing fixture 10 of the present embodiment, the chain tooth array component 16 including the core thread 12 and the zipper chain teeth 14 can be reliably held together with the object 20 to be sewn on the sewing machine, and sewing can be performed with a gap between the opening piece 18 of the chain tooth array component 16 and the object 20 to be sewn. The operator can simply make fine adjustments to the sewing position of the opening piece 18 and the object 20 to be sewn. Thus, contact with the object 20 to be sewn is prevented when passing through the slider after sewing, and operability becomes good. The operator can sew the opening piece 18 of the chain tooth array component 16 by making fine adjustments to the sewing position of the object 20 to be sewn along the guide surface 30. After sewing, the end edge 20a or the end edge 20c side of the end edge 20b can be accurately moved outwardly, for example, 1 mm relative to the length direction of the chain tooth array component 16 and sewn with a gap. By moving the seam 1 mm outward, the sewn article 20 is not damaged when the opening piece 18 is opened / closed or the slider is slid, and the operability is also good.

[0098] A dedicated inserting rod side chain tooth array jig 10a and a seat rod side chain tooth array jig 10b are respectively provided corresponding to the inserting rod 22 or the seat rod 24 of the opening member 18, and the positions of the inserting rod protrusion 54 or the seat rod protrusion 66 relative to the stopper 50 are respectively set without error, and the sewing position is accurately positioned, and the position of the first sewing needle of the sewing needle is consistent with the inserting rod side chain tooth array 16a and the seat rod side chain tooth array 16b to achieve accurate finishing. Furthermore, the size of the base portion 34 of the inserting rod side chain tooth array jig 10a and the seat rod side chain tooth array jig 10b is changed to change the placement position, thereby preventing the operator from operating incorrectly.

[0099] The holding member 58 presses the chain tooth row member 16 and the sewn object 20 with appropriate strength, so the operator can make fine adjustments and reliably lock the position after fine adjustments. The fin portion 32 for sewing and the sewn object 20 can be visually recognized from the opening 60 of the holding member 58, and fine adjustments can be accurately made while visually observing.

[0100] By executing the opening piece sewing procedure using a sewing machine dedicated to the element row component 16, the opening piece 18 can be sewn. The opening piece 18 and the zipper element 14 can be sewn using the same sewing machine, thereby improving the working efficiency.

[0101] In addition, the utility model is not limited to the above-described embodiments, and the shape or size of the base or retaining member can be appropriately changed. The shapes of the positioning portion for the rod portion, the protrusion for the insertion rod, and the protrusion for the seat rod can be appropriately changed according to the insertion rod and the seat rod of the chain tooth array member. In addition to clothes with zippers, the sewn object can also be any item such as a bag or a cover. The retaining member can also be provided with a force-applying component on the base portion to maintain the closed state. The chain tooth array member to which the sewn object is sewn can be a long member with opening parts arranged at specified intervals, or it can be cut into a member of a specified length with one opening part.

Claims

1. An opening piece sewing jig (10) for sewing an opening piece (18) of a pair of fastener teeth array members (16) each having a plurality of zipper teeth (14) installed along a pair of left and right core lines (12) to a sewn object (20), characterized in that: include: A flat plate-shaped base portion (34); and a holding member (58) which is openably / closably arranged relative to the base portion (34). The base portion (34) is provided with: an engaging tooth portion (42) which is integrally provided on the base portion (34) and meshes with a driving gear (68) of a sewing machine; a tooth positioning portion (48) which is provided on the surface of the base portion (34) and positions the tooth array (16a, 16b) of the tooth array component (16); and a rod positioning portion (46) which is provided on the surface of the base portion (34) and positions the rod portion of an opening member (18) located at the end of the tooth array component (16). The retaining member (58) clamps the sewn object (20) between the base portion (34) and maintains a constant distance between the end edges (20a, 20b) of the rod portion and the sewn object (20) when the chain tooth row member (16) and its rod portion are fixed to the chain tooth positioning portion (48) and the rod portion positioning portion (46).

2. The opening piece sewing jig according to claim 1, characterized in that: The rod portion of the opening member (18) of the pair of chain tooth array components (16) includes an insert rod (22) and a seat rod (24) installed with a seat portion, and the base portion (34) is arranged in a pair to constitute a pair of base portions (34), wherein the rod portion of one of the base portions (34) is formed into a shape in which the insert rod (22) is positioned by a positioning portion (46), and the rod portion of the other base portion (34) is formed into a shape in which the seat rod (24) is positioned by a positioning portion (46).

3. The opening piece sewing jig according to claim 2, characterized in that: The rod positioning portion (46) of the pair of base portions (34) has protrusions (54, 66), and the protrusions (54, 66) are respectively provided to position only one of the insert rod (22) and the seat rod (24).

4. The opening piece sewing jig according to claim 2 or 3, characterized in that: The retaining member (58) has an opening portion (60), wherein the opening portion (60) exposes a portion of the end edge (20a, 20b) of the sewn object (20) while the end edge (20a, 20b) of the sewn object (20) is retained between the base portion (34), and the retaining member (58) is configured to be able to be opened / closed freely by swinging relative to the base portion (34), and when closed to the side of the base portion (34), the end edge (20a, 20b) of the sewn object (20) can be visually identified in the opening portion (60).

5. The opening piece sewing jig according to claim 2 or 3, characterized in that: The element positioning portion (48) and the rod positioning portion (46) of the pair of base portions (34) are formed in a groove shape on the surface of the base portion (34), and the rod positioning portion (46) is provided with a protrusion (54, 66).

6. The opening piece sewing jig according to claim 4, characterized in that: The rod parts of the pair of chain element array members (16) are respectively provided with fin parts (32) for sewing formed integrally with the rod parts, and a through hole (44) is formed in the base part (34) between the positioning part (48) for the chain element and the positioning part (46) for the rod part, and the through hole (44) is connected to the opening part (60) when the retaining member (58) is closed relative to the base part (34). While the sewn object (20) is held between the base portion (34) and the retaining member (58), the rod portion of the chain tooth array (16a, 16b) and the sewing fin portion (32) are sewn to the sewn object (20) by a sewing needle penetrating the through-hole (44) and the opening portion (60), thereby sewing the chain tooth array (16a, 16b) to the sewn object (20).

7. The opening piece sewing jig according to claim 6, characterized in that: In the pair of base portions (34), at a position where the rod portion positioning portion (46) for positioning the insert rod (22) and the rod portion positioning portion (46) for positioning the seat rod (24) are at different distances from one end portion (40c) of the base portion (34) and the distance from the one end portion (40c) to the sewing needle is equal, the opening portion (60) and the through hole (44) can be connected, so that the pair of chain tooth array components (16) can be sewn using the sewing needle in the same manner.

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