TW201922137A - Slide fastener sewing method and slide fastener product - Google Patents

Abstract

Provided is a sewing method for a slide fastener 10 having a tooth joining body 13 connecting a plurality of teeth 11 by a band shaped body 12, wherein: the teeth have a leg part 111 supported by the band shaped body and a head part 112 protruding from the leg part and interlocking with facing teeth of another tooth joining body facing the same; and the tooth joining body is sewn after forming, by sewing, needle drop points a2 - a6 within a triple overlapping part 2b wherein the material to be sewn is double folded. Thus, excellent sewing can be performed for the slide fastener.

Description

Sewing method of zipper and zipper product

The present invention relates to a sewing method of a slide fastener in which a bite is connected with a rope and a slide fastener product using the same.

Conventionally, there have been proposed slide fasteners including a pair of engaging members connected by a rope-like body and a pair of engaging members connected and separated by a pair of engaging members.
The fastener of this slide fastener has a leg fixed to a cord body, and a head that engages with each other when a pair of fastener joints are connected. Each of the fasteners of each fastener joint has the same heads facing the same. It is fixed to the string-like body in the state of the direction (for example, refer to Patent Document 1).
[Prior technical literature]
[Patent Literature]

[Patent Document] Japanese Public Sho Sho 40-13870

[Problems to be Solved by the Invention]

However, if the end piece of the object to be sewn is sewn with a sheet-like material of the fastener-attachment body of the slide fastener, fibers at the end edge of the object to be sewn will be loosened, making it difficult to secure the sewing strength.
Therefore, measures such as measures such as double folding back the material along the edge of the object to be sewn, inserting a fusible sheet therebetween, and performing reinforcement by thermal fusion before performing sewing and the like have been reviewed.
However, for this countermeasure, it is necessary to prepare a weldable sheet, insert a weldable sheet into a sewing object, and perform a number of operations such as thermal welding work at an end edge portion of the sewing object, resulting in a large work load, and A problem that the sewing work efficiency is greatly reduced arises.

The object of the present invention is to achieve good sewing of the joint body of the engaging member.

[Means to solve the problem]

As claimed in the invention of item 1,
A sewing method of a zipper is a sewing method of sewing the above-mentioned engagement member connection body of a zipper having an engagement member connection body in which a plurality of engagement members are connected by a rope-like body to an end edge of a sewing object. ,
The above-mentioned engaging member includes: a foot supported by the rope-like body; and a head of the engaging member engaged with the other engaging member coupling body protruding from the foot and forming a pair,
By sewing, the needle drop point is formed in the overlapped portion where the object to be sewn is folded back twice and overlapped into a triple, and then the sewing of the bite-connected body is performed.

The invention of claim 2 is the sewing method of claim 1, wherein:
With the cloth pressing member, the sewing object is folded back twice to form a triple overlapping portion.

The invention of claim 3 is the sewing method of claim 1 or 2, wherein:
A head tribal needle point toward the head side of the cord-like body of the bite and an edge tribal needle point toward the end edge side of the rope to be sewn are formed.

The invention of claim 4 is the sewing method of claim 3, wherein:
The end edge tribe pin point is provided at two positions of one end portion and the other end portion of the inner side of the width of the leg portion of the bite with respect to the length direction of the rope-like body, and is farther away from the foregoing portion than the two portions. The bite and the position of the range inside the width of the foot of the bite,
Sew so that the sewing thread passing from the head tribal needle point to the end edge tribal needle point of the one end portion and the end thread tribal needle point from the other end portion to the head tribal needle point of the adjacent bite The sewing thread is a side surface that spans both sides of the leg portion of the engaging member, respectively.

The invention of claim 5 is the sewing method of claim 4, wherein:
The slide fastener is provided with a pair of the fastener joints and a zipper head that couples and separates the pair of fastener joints,
The end edge tribal pin point provided on the one end portion and the end edge tribal pin point provided on the other end portion are provided within a range in which the zipper head passes through the sewing object.

The invention of claim 6 is the sewing method according to any one of claims 1 to 5, wherein:
The aforementioned needle drop point is formed by a Zigzag Chain Stitch.

If the invention of claim 7,
A zipper product is provided with: a zipper having a pair of engaging members connected by a rope-like body, and a zipper head for joining and separating the pair of engaging members; and A sewn article which individually sew the aforementioned pair of occlusal piece joints at the edge portions of two parts is characterized in that:
The above-mentioned engaging member includes: a foot supported by the rope-like body; and a head of the engaging member engaged with the other engaging member coupling body protruding from the foot and forming a pair,
By sewing, the needle-dropping point is formed in the overlapped portion where the object to be sewn is folded back twice along the end edge portion and overlapped into a triplet, thereby sewing the bite-joint body.

The invention of claim 8 is the zipper product of claim 7, wherein:
The needle drop point includes a head tribe needle point toward the head side of the cord body with the bite, and an edge tribe needle point toward the end side of the rope body with the sewing object.

The invention of claim 9 is the zipper product of claim 8, wherein:
The end edge tribe pin point is provided at two positions of one end portion and the other end portion of the inner side of the width of the leg portion of the bite with respect to the length direction of the rope-like body, and is farther away from the foregoing portion than the two portions. The bite and the position of the range inside the width of the foot of the bite,
The end edge tribal pin point provided on the one end portion and the end edge tribal pin point provided on the other end portion are provided within a range in which the zipper head passes through the sewing object.
The sewing thread that passes from the head tribe needle point to the end edge tribal pin point of the one end portion and the end thread tribal needle point from the other end portion to the head tribe needle point of the adjacent bite is different. A side surface that spans both sides of the foot of the bite.

The invention of claim 10 is the zipper product of claim 9, wherein:
The end edge tribal pin point provided on the one end portion and the end edge tribal pin point provided on the other end portion are provided within a range in which the zipper head passes through the sewing object.

The invention of claim 11 is the zipper product according to any one of claims 7 to 10, wherein,
The stitch formed at the needle drop point is a stitch of a zigzag chain stitch.

[Inventive effect]

Since the present invention forms a needle drop point in the overlapped portion where the object to be sewn is folded back twice and overlapped into three layers, and then the joint of the engaging member is sewn to the object to be sewn, it is possible to overlap the three layers without producing the first. Needle dropping is performed on the scattered overlapped parts, which can improve the sewing strength of the joint of the engaging member to the object to be sewn.

[Outline of fastener product]
Hereinafter, as an embodiment of the present invention, a zipper product 1 and a zigzag lock stitch sewing machine 100 suitable for sewing the zipper product 1 will be described in detail.
FIG. 1 is a plan view of a zipper product 1.
In addition, as the zipper product 1, in addition to daily necessities such as clothes, footwear, and purses, other non-daily necessities are also targeted. In other words, all the products of the slide fastener 10 can be used for applications such as the bonding of sheet-like objects to be sewn, the notched portions of the objects, opening and closing of openings, and the like.

The slide fastener product 1 is comprised by the slide fastener 10 and the to-be-sewn-made article 2 in which the slide fastener 10 was sewn.
The object 2 to be sewn of the slide fastener product 1 targets all sheet-like materials that can be sewn. For example, the material to be sewn 2 includes cloth, fabric, leather, synthetic resin, and the like.
This sewn material 2 is provided with two end edge portions 2a facing each other. At this end edge portion 2a, a triple overlap portion 2b formed by folding the material of the sewn material 2 toward the back side twice is formed. .
In addition, one pair of engaging members 13 of the zipper 10 is individually sewn to each of the end edge portions 2a along the end edge portion 2a.

In this embodiment, the case where each edge part 2a of the to-be-sewned object 2 of the fastener product 1 is linear is taken as an example. In addition, the shape of each edge part 2a is only an example, The slide fastener 10 can also be applied even if it is other curved shapes, such as a curved shape.
In the following description of the zipper product 1 and the zipper 10, a direction along the edge 2a of the sewing object 2 is referred to as a Y-axis direction, is parallel to the plane of the sewing object, and is orthogonal to the Y-axis direction. The direction of is called the X-axis direction, and the direction perpendicular to the plane of the object to be sewn is called the Z-axis direction.
In addition, each of the pair of engaging element coupling bodies 13 of the slide fastener 10 is sewn to the edge portion 2a of the sewing object 2 along the Y-axis direction, and the operation direction in which the fastener head 14 couples the engaging element coupling bodies 13 ( The upper side of the paper in FIG. 1) is called [front], the direction of separation (below the paper in FIG. 1) is called [rear], the left-hand side facing forward is called [left side], and the right-hand side is called [right]. The front side of the paper surface perpendicular to the paper surface in FIG. 1 is referred to as [upper], and the back side of the paper surface is referred to as [lower].
According to this definition, in FIG. 1, the object to be sewn 2 is illustrated in a state in which the surface of the object 2 faces the upper side and the back side faces the lower side.

[zipper]
FIG. 2 is an enlarged plan view of the zipper 10.
As shown in FIG. 1 and FIG. 2, the slide fastener 10 is provided with a pair of snap fasteners 13 which are connected to a plurality of snap fasteners 11 by a rope 12 and a pair of snap fasteners 13 which are coupled and separated. Head 14.
The engaging elements 11 are provided with a leg portion 111 through which the rope body 12 penetrates and a head portion 112 protruding from the foot portion 111. The plurality of engaging elements 11 are fixed to the rope at regular intervals with the head portions 112 facing in the same direction. The shape body 12 constitutes the articulated body 13.

The rope-like body 12 connecting the bites 11 may be a rope-like one having strength and low stretchability, and monofilament fibers, multifilament fibers, strands, strands, or the like may be used. The structure and type of the rope are not particularly limited.
In addition, the rope-like body 12 may be a soft one that is easily bent, but may be a flexible one having rigidity to the extent that the linear shape can be maintained without being subjected to external force.

The pair of engaging members 13 are sewn to each end edge portion 2 a of the object 2 so that the head portions 112 of the engaging members 11 face each other.
The slider 14 has a guide path formed at the front end portion thereof for each of the engaging members 13 to pass individually, and two guide paths inside are combined to form one guide path at the rear end portion.
That is, when the separated pair of engaging members 13 enters each of the guide paths on the front end side of the fastener head 14, the heads 112 of the respective engaging members 11 of the respective engaging members 13 engage until they pass through the fastener head. As far as the rear end portion of 14 is concerned, a pair of articulator coupling bodies 13 are connected.
On the other hand, if the engaged pair of engaging elements 13 enters the guide path of the rear end portion side of the slider 14, the engaging state of the head 112 of each engaging element 11 of each engaging element 13 It is released until it passes through the front-end | tip part of the fastener head 14, and a pair of articulator coupling body 13 is separated.

FIG. 3 is a perspective view of the engaging member 11. FIG. 3 shows the engaging element 11 of the engaging element coupling body 13 on the left side of FIGS. 1 and 2. Based on this FIG. 3, in the following description of the engaging member 11, each part will be described in the direction of the engaging member 11 of the engaging member connector 13 on the left side.
In the case of the engaging member 11 of the engaging member 13 on the right side, only the direction of the head portion 112 is reversed left and right, and the structure is the same.

The occluder 11 is made of a thermoplastic resin such as polyamide, polyoxymethylene, polypropylene, polybutylene terephthalate, and the like, and is formed by injection-molding the cord body 12 with the cord body 12. Formed as a liquid.
In addition, the engaging member 11 is not limited to a thermoplastic resin, and may be formed by die-casting using a metal such as an aluminum alloy, a zinc alloy, or a magnesium alloy.

Each of the engaging members 11 is shown in FIGS. 2 and 3. The leg portion 111 has a slightly rectangular parallelepiped shape. From one side 116 to the other side 117 in the width direction, the rope body 12 has passed through, The leg portion 111 is fixed.
It should be noted that the “width direction of the leg portion 111” indicates a direction along the longitudinal direction of the string-like body 12.
The left end portion of the leg portion 111 faces the end edge portion 2 a of the object 2 to be sewn, and the right end portion has a head portion 112 protruding to the right. In addition, on the front and back sides of the boundary portion between the head portion 112 and the leg portion 111, recessed portions 113 recessed along the Y-axis direction are formed over the entire length of the Z-axis direction.
As a result, the head 112 is formed in a reduced diameter shape that protrudes to the right and its base portion is narrowed by the recesses 113 on both sides. The front end and the rear end of the head 112 are bulged in a planar viewing angle. Arc shape.
In addition, the shape of the plane viewing angle of each of the recessed portions 113 is the same as the shape of the plane viewing angle of the front end portion and the rear end portion of the head portion 112, and is formed into a circular arc shape.
Therefore, in the connected state of the pair of articulator joints 13, the recesses 113 on both sides of the head 112 of the articulator 11 of one of the articulator joints 13 are formed, and the phase of the other articulator link 13 is formed. The front end part or the rear end part of the head part 112 of the two adjacent engagement members 11 are fitted.
As a result, in the connected state of the pair of engagement member coupling bodies 13, the head portions 112 of the respective engagement members 11 are restrained from each other in the front-rear direction, and the pair of engagement member coupling bodies 13 are kept from being separated.
Further, as shown in FIG. 2, the plurality of engaging members 11 of each engaging member connecting body 13 are connected to the rope-shaped body 12 at a certain interval through the space. However, the interval of each engaging member 11 is set as a unit. When the articulator joints 13 are connected to each other, the head 112 of the articulator 11 of each articulator joint 13 is fitted to the recess 113 of the other articulator joint 13 without a gap.

FIG. 4 is an enlarged plan view showing a part of the occluded state of the occluders 11 with each other cut away. As shown in FIGS. 3 and 4, a groove 114 along the Y-axis direction is formed at a protruding end portion (right end portion) of the head portion 112 of the bite 11.
A plate-shaped protrusion 115 protruding to the right is formed inside the recessed portion 113 on the front and back sides of the engaging member 11 at the same height as the groove 114.
The structures of the grooves 114 and the protrusions 115 are such that when a pair of the engaging piece connecting bodies 13 are connected, the protrusions 115 on the front and back sides of the engaging piece 11 of each engaging piece connecting body 13 are fitted to the other engaging piece connecting body. 13 is in the groove 114 of the engaging member 11.
As a result, the head 112 of each of the articulators 11 of the one occluder coupling body 13 and the head 112 of each of the occluders 11 of the other articulation joint 13 are formed to be mutually restrained in the Z-axis direction, even if Receiving external force in the Z-axis direction can also effectively maintain the connected state.

[Example of Needle Drop Point for Sewing of Zipper (1)]
An embodiment (1) of the sewing method of the slide fastener 10 and the needle drop point for forming a stitch will be described with reference to FIGS. 2 and 5. FIG. 5 is a diagram showing the needle drop point of the stitch of the occluder coupling body 13 on the left side as viewed from the rear.
Each of the engaging members 13 of the slide fastener 10 is used to sew the edge 2a of the sewing object 2 with a lock stitch formed by a zigzag lock stitch sewing machine 100 described later. Therefore, a stitch is formed by the upper thread U on the front side of the object 2 and a stitch is formed by the lower thread D on the back side.

When performing the sewing of the engaging member connecting body 13, as shown in FIG. 2, the three-point zigzag locking needle of the zigzag locking needle sewing machine 100 is used to form a pair of ropes toward the engaging member 11 for each engaging member 11. The head tribal needle points a1 on the side of the head 112 of the 12 and the tribal needle points a2 to a6 on the edge 2a of the rope body 12 on the side of the sewing object 2. The needle drop points are from a1 to a6, which are formed on the basis.
The engaging element 11 is fixed to the object 2 by stitches t1 to t6 formed by the following upper thread U and lower thread D.
t1: stitch formed between needle drop points a1-a2
t2: stitch formed between needle drop points a2-a3
t3: stitch formed between needle drop points a3-a4
t4: stitch formed between needle drop points a4-a5
t5: stitch formed between needle drop points a5-a6
t6: Needle drop point a6-a11 (the tribal needle point a1 at the head of the occlusal member 11 on the rear adjacent side, but for the sake of convenience of explanation, the difference is described here and described as [a11] in FIG. 2). 6 to 10 described later also form stitches at the same interval.
Moreover, the sewing system is not limited to a three-point zigzag lock pin, but may be a zigzag lock pin of two or more points.

The tribal needle point a1 is a side surface 116 approaching the front side of the leg portion 111 of the occluder 11 to be fixed in the Y axis direction, and the right side of the cord body 12 when approaching the cord body in the X axis direction. 12 position.
At this tribal needle point a1, the zigzag lock stitch sewing machine 100 performs needle drop in a blank place, but when the sewing needle of the sewing machine 100 is raised, it can be slid on the rope body 12, the engaging member 11 and the like to be threaded. The U loop is captured by the kettle and wound around the lower thread D. Therefore, a nodule formed by the upper thread U and the lower thread D can be formed at the needle point a1 of the head.

The ends of the tribal needle points a2 to a6 are the overlapping portions 2b of the sewing object 2 and are located in the region R1 within the width of the Y-axis direction of the leg portion 111 of the engaging member 11 which is the fixed object for the Y-axis direction. .
The overlapping portion 2b doubles the material of the material to be sewn 2 to the end edge portion 2a in parallel twice to overlap the material to a triple. In addition, the region R1 is set to be a material in which the material is overlapped into a triplet over the entire area, and all the edge tribal pinpoints a2 to a6 are preferably formed at positions where the material is overlapped into a triplet.
Among them, near the front end 2aa of the end edge portion 2a, there may be cases where the folded-back material cannot be penetrated, and the end edge tribal pinpoints a2 and a6 near the front end portion may be formed in a double part of the material. Even in this case, when a part of the tribal needle points at the edge edges are formed in a position where they overlap to form a triplet, the effect of improving the sewing strength can be obtained.

Furthermore, it is desirable that the two points of the edge margin tribe needle points a2 to a6 among the edge margin tribe needle points a2 to a6 are half the width w / of the overlap width w of the overlapping portion 2b of the sewing object 2 in the aforementioned region R1. 2 is the center, and it is located in the area R2 of the front end 2aa side of the edge part 2a. In addition, in FIG. 2, the regions R1 and R2 are displayed in a shaded manner in order to clearly display the range of each region.
In addition, the two points of the edge tribal needle points a2 and a6 are located in the aforementioned region R2, and are individually arranged at one end portion (front end portion) and the other end portion (rear end portion) in the Y-axis direction.

Furthermore, it is desirable that the aforementioned edge tribal needle points a2 and a6 are arranged as close to the front side and the rear side as possible within the aforementioned region R2.
In addition, it is desirable that the aforementioned edge tribal needle points a2 and a6 are arranged in the region R2 as far as possible in the X axis direction near the front end 2aa of the edge 2a.
For example, as shown in FIG. 5, if the material to be sewn 2 is folded back twice to form a triple overlapping portion 2 b, a flat portion along the XY plane is formed at the end edge portion 2 a of the material to be sewn 2 and folded back. And the curved part.
For stable sewing of the engaging member 11, it is desirable that the aforementioned edge tribal needle points a2 and a6 are arranged in the range of the width v of the portion bent by folding back with respect to the X-axis direction.
Among them, if the material of the material to be sewn 2 does not reach the range of the width v of the portion bent by folding back, this range becomes double, or it can be formed farther from the range of the width v and within the triple range. End margin tribe pin points a2, a6.

The three points of the edge tribal pinpoints a3 to a5 are within the aforementioned region R1 and farther away from the front end 2aa of the edge 2a than the region R2. Within the range between the edge tribal needle points a6, they are arranged in a row along the Y-axis direction.

When the zigzag lock stitch sewing machine 100 is being sewn, the edge 2a of the object 2 to be sewn and the cord-like bodies 12 of the one-piece engagement member 13 are arranged along the Y-axis direction, and are moved toward It is forwarded and the sewing needle is swung along the X-axis direction, and each of the engaging members 11 is sequentially pressed from the engaging member 11 on the front side, and the needles are sequentially dropped at the needle dropping points a1 to a6 to form a lock-shaped needle step. Perform stitching with stitches t1 to t6.

The stitches t1 formed by the upper thread U and the lower thread D between the needle entry points a1-a2 formed by the aforementioned sewing, and the stitches t6 formed by the upper thread U and the lower thread D of the needle entry points a6-a11 are respectively formed. The side surfaces 116 and 117 which straddle both sides in the Y-axis direction of the leg portion 111 of the engaging member 11 to be fixed.
This is because two points of the edge tribal needle points a2 and a6 are located in the region R2 at the front end portion and the rear end portion.
For example, if the tribal needle points a2 and a6 are located at the front and rear ends in the region R2, the tension t1 and t6 of the upper and lower threads U and D can be adjusted by the tension of the scale after the needle is dropped. Cross sides 116, 117, respectively.

The states of the aforementioned stitches t1 and t6 span the sides 116 and 117, respectively, so that the upper line U and the lower line D of the stitches t1 and t6 are formed to be abutted on the foot 111 of the engaging member 11 The state of the side corners.
Thereby, the upper thread U and the lower thread D are held so as to surround the occlusal element 11 from the sides 116 and 117. Therefore, the movement of the occlusal element 11 in the Y-axis direction is suppressed, and the head 112 of the occlusal element 11 in the Y-axis direction The swing is suppressed, and the swing of the head 112 of the articulator 11 around the Y axis is suppressed. Therefore, in the slide fastener product 1, a smooth connection or separation operation by the slider 14 can be performed.

Further, in the embodiment (1) of the needle drop point, the edge portion tribal needle is formed at a position farther from the front edge 2aa of the edge edge portion 2a than the edge edge tribal needle point a2, a6 at the overlapping portion 2b of the sewing object 2. Points a3 to a5. Accordingly, the effect of flexing the sewn object 2 of the overlapping portion 2b can be effectively suppressed, and therefore, the movement and swing of the engaging member 11 can be more effectively suppressed.
In addition, the three points of the end point tribal needle points a3 to a5 may be disposed in a region farther from the front end 2aa of the end edge portion than the region R1. In this case, since the stitches t2 formed between the needle drop points a2-a3 and the stitches t5 formed between the needle drop points a5-a6 are above and below the line U and the lower line D, the overlapping portion 2b is maintained, so that the overlap can be suppressed. Deflection of the part 2b to be sewn 2.

In addition, the aforementioned respective stitches t1 to t6 are all stitches of a lock-type stitching. Therefore, by adjusting the thread tension, it is easy to increase the restraint force of each of the engaging members 11 and it is possible to more effectively suppress the movement and swing of the engaging members 11 .

[Example of Needle Drop Point for Sewing of Zipper (2)]
Fig. 6 shows the embodiment (2).
This example is different from the example of FIG. 2 in that the edge tribal pin points a3 and a5 are not formed.
In this way, it is also possible to increase or decrease the number of tribal pinpoints at the edge edges separated from the edge portion 2a of the object 2 to be sewn. However, in this case, it is desirable to form all the remaining marginal tribal pinpoints within a triple range where the material is formed by two folds of the sewing object.

[Example of Needle Drop Point for Sewing of Zipper (3)]
Fig. 7 shows an example (3).
In this example, compared with the example of FIG. 2, the difference is that the edge tribal pin points a2 and a6 are not formed.
In this way, the formation of tribal needle points from the edge near the edge 2a of the object 2 can be omitted. However, in this case, it is desirable to form all the remaining marginal tribal pinpoints within a triple range where the material is formed by two folds of the sewing object.

[Example of Needle Drop Point for Sewing of Zipper (4)]
Fig. 8 shows an example (4).
This example is different from the example of FIG. 2 in that the edge tribal pin points a3 and a5 are not formed.
In this way, the edge tribal needle points near the edge 2a of the object 2 to be sewn can also be left, and the formation of the remote edge tribal needle points in the distance can be omitted. However, in this case, it is desirable to form all the remaining marginal tribal pinpoints within a triple range where the material is formed by two folds of the sewing object.

[Example of Needle Drop Point for Sewing of Zipper (5)]
Fig. 9 shows an example (5).
This zipper product 1C is sewn to form the head tribal needle points a1 and the edge tribal needle points a2 to a6 in order to sew each of the engaging members 11 of the engaging members 13 of the zipper 10. Furthermore, it is desirable to form end-point tribal pinpoints a3 to a5, but it is not necessary.
The formation position of the head tribe pin point a1 is the same as that of the aforementioned zipper product 1.
The formation positions of the edge tribal needle points a2 and a6 are related to the range of the zipper head 14 passing through the object 2 to be sewn. A straight line S in FIG. 9 shows a locus through which the outermost end portion in the X-axis direction of the fastener head 14 passes when moving to perform a coupling or separation operation of the pair of engagement member links 13. That is, compared with this straight line S, the side of the fastener coupling body 13 is a range in which the fastener head 14 passes through the to-be-sewn object 2. In addition, the end edge tribal needle points a2 and a6 are located in the range R3 of the zipper head 14 passing through the sewing material 2 and inwardly of the region R3 in the Y-axis width of the leg portion 111 of the engaging member 11. unit.
In addition, as described above, the end point tribal needle points a3 to a5 are desirably provided in the region R1, but may be provided at a distant position with respect to the articulated member 13 compared to the overlapping portion 2b of the object 2 to be sewn.

[Example of Needle Drop Point for Sewing of Zipper (6)]
Fig. 10 shows an example (6).
In this example, compared with the example of FIG. 2, the tribal needle point a1 on the head is formed twice with all the tribal needle points on the edge, and all the stitches are formed as double points.
In this example, although the edge marginal tribal needle points a2 and a6 are omitted, the edge marginal tribal needle points a2 and a6 may be formed.
In this way, even if the head tribal needle point a1 and all the edge tribal needle points are formed twice, all the stitches are formed into a double case, and it is desirable that all the edge tribal needle points are formed by being sewn by falling. Twice the object back to make the material into the triple range.
Further, the stitch formation may be further repeated to form triple or more stitches.

[Sawtooth Lock Needle Sewing Machine]
A zigzag lock stitch sewing machine 100 as an ideal sewing machine will be described with reference to the drawings regarding sewing of the pair of engaging members 13 of the zipper product 1 to the object 2 to be sewn.
FIG. 11 is a perspective view of a zigzag lock needle sewing machine 100.

This zigzag lock stitch sewing machine 100 is provided with: a sewing frame 20 having a sewing head 21; a cloth pressing member 25 for pressing the material to be sewn 2 provided on the needle plate 24 of the sewing head 21 from above; and a needle plate 24 On the top of the sewing object 2, the sewing needle 26 is moved up and down and swings left and right, and a needle up and down movement mechanism is provided; from the lower side of the needle plate 24, the sewing object 2 is conveyed toward the predetermined feed by the conveying teeth. A cloth feeding mechanism for directional conveyance; a kettle mechanism for winding the upper thread U of the sewing needle 26 and a lower thread D; and a zipper transport mechanism 40 for transporting the engaging member 13 of the zipper 10.
In addition, the other structures other than the zipper conveying mechanism 40 are the same as the conventional structures provided in a general zigzag lock stitch sewing machine, and therefore, the drawings are omitted and simply explained.

[Sewing frame]
The sewing frame 20 includes a sewing head 21 located at the lower portion of the entire sawtooth lock sewing machine 100, an upright main body portion 22 standing at one end of the sewing head 21, and an upright body portion 22 An upper end portion of the sewing arm portion 23 extends in a predetermined direction.
In the following description, the length direction of the sewing head 21 and the sewing arm portion 23 of the zigzag lock stitch sewing machine 100 is set to the X-axis direction, and the needle plate 24 side of the sewing head 21 is set to "left", The side of the standing body portion 22 is set to "right".
The zigzag lock stitch sewing machine 100 is mounted on the throat plate 24 and transports the object 2 and the engaging member 13 in a direction orthogonal to the X-axis direction. The transport direction is set to the Y-axis direction and the transport direction. The downstream side is set to "front", and the upstream side in the transport direction is set to "rear".
Further, a direction orthogonal to the X-axis direction and the Y-axis direction is referred to as a Z-axis direction, and one of them is referred to as "up" and the other is referred to as "down".
In addition, when sewing the X-Z axis direction defined by the zipper product 1 described above, the state of the sewing object 2 and the engaging member connecting body 13 of the zipper product 1 having been mounted on the zigzag lock stitch sewing machine 100 described above is consistent. However, in this zigzag lock stitch sewing machine 100, the object 2 to be sewn is mounted with the front surface of FIG. 2 facing downward and the rear surface facing upward to be sewn.

[Needle up and down mechanism]
The needle up-and-down moving mechanism includes: a needle bar 27 that holds the sewing needle 26; a sewing machine motor that becomes a driving source for sewing; an upper shaft that is rotationally driven by the sewing machine motor; and a rotary motion of the upper shaft that is converted into a reciprocating motion in the vertical direction. A crank mechanism provided to the needle bar 27; a needle bar support table that supports the needle bar up and down; and a needle swing motor that arbitrarily moves the needle bar support table along the X-axis direction.
This needle up-and-down moving mechanism moves the sewing needle 26 up and down at a sewing speed corresponding to the number of rotations of the sewing machine motor, and positions the needle drop position of the sewing needle 26 along the X-axis direction orthogonal to the transport direction of the engaging member 13 Move freely to adjust.

[Kettle mechanism]
The kettle mechanism includes a kettle provided on the lower side of the needle plate 24, and a transmission mechanism for applying a rotational force to the kettle from a sewing machine motor.
The kettle system accommodates a bobbin around which the lower thread D is wound, and has a tip on the outer periphery. Furthermore, the thread loop passing the upper thread of the sewing needle 26 is captured by the tip, and the upper thread loop is passed through the bobbin, and the lower thread D is wound around the upper thread U to form a nodule.
In addition, the kettle system can use a vertical kettle, a horizontal kettle, or any of a half-rotation and a full-rotation kettle.

[Feeding mechanism]
The cloth feeding mechanism includes conveying teeth that come and go from the opening portion 241 (see FIG. 12) of the throat plate 24, and conveying conveying the conveying teeth by combining the reciprocating movement in the Z-axis direction and the reciprocating movement in the Y-axis direction. mechanism.
The conveying tooth system is provided with zigzag teeth that emerge from the opening 241 formed in the throat plate 24. The conveying transmission mechanism can obtain power from the sewing machine motor and convert it into an axis direction along the Z axis direction and a direction along the Y axis direction. The reciprocating action is transmitted to the conveying teeth, whereby the conveying teeth perform a circular motion in the YZ plane that combines the forward and backward reciprocating movements. When the upper part of the oval moves, the tooth tip protrudes upward from the opening 241 and moves forward. , The sewing object 2 can be conveyed forward.
In addition, this cloth feeding mechanism can arbitrarily control the amount of conveyance of the sewing object 2 in the Y-axis direction of each needle.
Moreover, it can also be set as the conveying adjustment motor which can adjust the amount of feed arbitrarily provided in a feed mechanism, and can adjust a conveyance amount by a conveyance adjustment motor.

[Pin plate]
FIG. 12 is a perspective view of the needle plate 24. The needle plate 24 is at the needle drop position of the sewing needle 26 provided on the upper surface of the sewing head 21. The upper surface of the needle plate 24 is flat and is provided to form the same surface as the upper surface of the sewing head 21.
The needle plate 24 has a rectangular flat plate shape, and along the upper left side of the upper surface, the sewing object 2 is transported along the Y-axis direction.

A slit-shaped pin hole 242 along the X-axis direction is formed through the central portion of the needle plate 24, and three opening portions 241 are formed through the front and rear and left sides of the pin hole 242 for the feeding teeth. The pinhole 242 is formed in a slit shape along the X-axis direction, and can correspond to a needle drop that is swung by a needle along the X-axis direction.

Further, in the central portion in the X-axis direction of the upper surface of the needle plate 24, a conveying groove 243 of the articulator coupling body 13 along the Y-axis direction is formed. The width of the conveying groove 243 in the X-axis direction is equal to or slightly larger than the length of the X-axis direction of the engaging member 11. The engaging member linking body 13 is accommodated in the conveying groove 243. The sewing product 2 is guided in the same Y-axis direction.
In addition, the conveying groove 243 has a depth which is one and a half shallower than the width in the Z-axis direction of the engaging member 11, so that the sewing object 2 on the needle plate 24 is positioned at the center of the engaging member 11 in the Z-axis direction. In addition, the front end portion and the rear end portion of the transport groove 243 are formed in a slope shape on the inner bottom surface of the groove.
The pinhole 242 is formed so as to cross the central portion in the Y-axis direction of the transport groove 243.
The needle plate 24 functions as a zipper guide that guides the engaging member coupling body 13 in the same Y-axis direction as the conveyance direction of the object 2 through the conveying groove 243.

[Fabric Press]
FIG. 13 is a perspective view of a cloth pressing member 25. The cloth material pressing member 25 is pressed and supported on the needle plate 24 downward by a pressing rod 251 suspended from the sewing arm portion 23.
The cloth pressing member 25 has a spiral-shaped opening 253 at the rear end. If the edge 2a of the sewing object 2 conveyed in the forward direction enters the opening 253, it will be wound around the Y axis approximately. State of the circle. Thereby, the edge part 2a of the to-be-sewn material 2 is formed in the state equivalent to being folded back twice, and if it is guided to the lower surface side of the cloth presser 25 in this state, it is formed to be folded back twice and overlapped into a triple Overlapping part 2b.

In addition, in this cloth material pressing member 25, a semi-oval-shaped cutout 252 of the sewing needle 26 to avoid falling is formed at an end edge portion on the right side. This notch 252 overlaps the left half of the pinhole 242 of the pin plate 24 when viewed from above.
The cloth pressing member 25 applies a pressing force to the overlapped portion 2 b which is folded back twice in the opening portion 253 and overlapped in a triple manner by the pressing force from the pressing rod 251.
Further, the cloth material pressing member 25 may be provided with a spiral opening portion 253 in a state where the end edge portion 2a of the to-be-sewned product 2 is wound approximately once around the Y axis, and The portions pressed back downward to be folded back twice and overlapped to form a triplet are formed into different bodies.

[Zipper transport mechanism]
FIG. 14 is a plan view of the zipper carrying mechanism 40, and FIG. 15 is a rear view.
As shown in the figure, the zipper conveying mechanism 40 includes a conveying gear 41 having teeth engaged with the engaging piece 11 of the engaging piece connecting body 13, a conveying motor 42 that imparts a rotational motion to the conveying gear 41, and a support that supports the conveying gear 41. Mechanism 43; transmission mechanism 48 that transmits rotational force from the conveyance motor 42 to the conveyance gear 41; and a zipper presser 49 that suppresses the engagement member 13 conveyed by the conveyance gear 41 from moving upward.

Fig. 16 is a perspective view of the periphery of the needle drop position, and Fig. 17 is a rear view of the periphery of the needle drop position.
As shown in FIG. 16 and FIG. 17, the transfer gear 41 is a spur gear having teeth on the outer periphery of the head 112 of one or more of the engaging members 11 that can be engaged with the engaging member link 13 along the Y-axis direction. The support mechanism 43 is rotatably supported around the Z axis.
The pitch width of the conveying gear 41 is consistent with the pitch of each of the engaging members 11 of the engaging member 13, and the tooth width is the width of the engaging member 11 minus the depth of the conveying groove 243 on the needle plate 24. The width is approximately equal. Therefore, the upper surface of the engaging member 11 and the upper surface of the transporting gear 41 of the engaging member coupling body 13 conveyed in the conveying groove 243 of the needle plate 24 are formed at the same height.
The transfer gear 41 is arranged on the right side of the needle drop position, and is arranged so that the head 112 of each of the engaging members 11 faces the engaging member link 13 on the right side and engages from the right side.
Therefore, if rotation is given to the conveyance gear 41, the articulation body 13 can be conveyed along a Y-axis direction.

As shown in FIG. 16 and FIG. 17, the slide fastener presser 49 is supported by the bottom plate 45 of the support mechanism 43 in front of the needle drop position, and extends rearward to the needle drop position.
In addition, the lower surface of the extended end portion of the zipper pressing member 49 is formed at the height of the upper surface of the engaging member 11 of the engaging member connecting body 13 in the conveying groove 243 of the needle plate 24 at the needle drop position.
Thereby, in the conveyance groove 243, the engagement gear 13 which meshes with the conveyance gear 41 can suppress that the conveyance gear 41 disengages upwards.

In addition, in this zipper presser 49, a semi-oval-shaped cutout 491 of the sewing needle 26 to avoid falling is formed at the left end edge portion of the extended end portion. This notch 491 overlaps with the right half of the pinhole 242 of the needle plate 24 when viewed from above.

FIG. 18 is a plan view of a state where the upper cover 451 on the bottom plate 45 of the support mechanism 43 and the upper cover 441 on the support arm 44 are removed.
As shown in FIGS. 14 and 18, the support mechanism 43 includes a support arm 44 that supports the transport gear 41, a bottom plate 45 that supports the support arm 44, and a slide guide that allows the bottom plate 45 to be slidably supported in the X-axis direction. Piece 46.

The bottom plate 45 is a flat plate along the XY plane, and is disposed between the needle drop position and the erected main body portion 22. The bottom plate 45 is disposed on the sewing head 21 via a slide guide 46.
The bottom plate 45 supports the transfer gear 41 via a support arm 44 and also supports the transfer motor 42 and the conveyance mechanism 48.
In addition, the bottom plate 45 is provided with an upper cover 451 on the upper portion to cover a part of the transmission mechanism 48 supported by the bottom plate 45.

The sliding guide 46 is composed of a movable block 461 fixedly connected to the bottom plate 45 and a slide rail 462 mounted on the sewing head 21 along the X-axis direction. The movable plate 461 can slide the bottom plate 45 along the X-axis direction. .

A right end portion of the bottom plate 45 is provided with a restriction bracket 452 that restricts the sliding movement of the bottom plate 45 in the X-axis direction.
This restricting bracket 452 extends to the right. At its extended end, the connecting screw 454 is rotatably supported. The sewing head 21 is provided with a fixing plate formed with a screw hole through which the connecting screw 454 can be screwed. 453.
Right, the bottom plate 45 can be fixed at a predetermined position when sewing by connecting the left side of the extended end portion of the restricting bracket 452 to the right side of the fixing plate 453 with the connecting screws 454 to each other. . If the connecting screw 454 is loosened and the restriction bracket 452 is separated from the fixing plate 453 to the right, the bottom plate 45 can be moved from a predetermined position to the right. When the bottom plate 45 is moved to the right, the right end portion of the bottom plate 45 comes into contact with the left surface of the fixed plate 453. This abutment position is a movable limit on the right side of the bottom plate 45.

As described above, the bottom plate 45 supports the transfer gear 41 via the support arm 44, and the transfer gear 41 contacts and transfers the engaging member 11 of the engaged member coupling body 13 from the right side.
The predetermined position at the time of sewing the bottom plate 45 is ideal for the case where the articulated member 13 is being conveyed, and the tooth tip of the conveying gear 41 can be appropriately meshed with the head 112 of the articulator 11 and then conveyed by rotation. position.
In addition, when the connecting screw 454 is loosened and the restricting bracket 452 is separated from the fixing plate 453, the bottom plate 45 is moved to the right to release the meshing state of the head 112 of the engaging member 11 of the engaging member connector 13 so that The tooth tips of the transport gear 41 are isolated toward the right.
Thereby, for example, maintenance of the zipper conveyance mechanism 40, the operation | work of removing the engagement member connection body 13 from the needle plate 24, etc. can be performed easily.

As shown in FIGS. 14 and 18, the support arm 44 is rotatably supported at the left end portion of the bottom plate 45 about a support shaft 442 along the Z-axis direction, and its rotating end portion is inclined obliquely to the right and rear.
In addition, the support arm 44 is rotatably supported on the rotating end portion thereof via a support shaft 411.
Further, a leaf spring-shaped stopper plate 412 is fitted to a rotating end portion of the support arm 44 and fits into a tooth groove of the outer side of the transport gear 41. The stopper plate 412 has a protrusion which is pressed against the conveyance gear 41 with a certain spring pressure to prevent the backlash of the conveyance gear 41.

An upper cover 441 is fixedly attached to the upper portion of the support arm 44. One end portion of a pull spring 443 is connected to a front end portion of the upper cover 441. The other end portion of the pull spring 443 is connected to the bottom plate 45, and a tension is applied in a direction in which the conveying gear 41 supported by the support arm 44 approaches the engagement member 13 side.

In addition, a restricting opening portion 445 is formed on the rotational end portion side of the upper cover 441 so as to be slidably inserted into the extending end portion of the pivoting angle restricting plate 444 that is fixedly supported on the bottom plate 45.
Thereby, the support arm 44 on the bottom plate 45 is restricted in the rotatable angle range, so that the conveying gear 41 moves only from its left limit position to the right limit position.
This rotatable angle range is a position where the conveying gear 41 can correctly mesh the teeth of the conveying gear 41 from the head 112 of the engaging member 11 of the engaging member 13 in the conveying groove 243 with a certain pressing force. , To the position where the transport gear 41 is completely disengaged from the meshing state with respect to the head 112 of the engaging member 11.
In this way, by allowing the support arm 44 to rotate within a predetermined angle range, the support arm 44 can be rotated to the right side by, for example, a manual operation while the bottom plate 45 is held at a predetermined position during sewing. When the sewing is completed, The meshing state between the transfer gear 41 and the engaging member 11 of the engaging member 13 can be released, and the engaging member 13 can be removed from the needle plate 24.

An origin sensor 413 and a detection plate 414 of the transport gear 41 are mounted on the upper cover 441 of the support arm 44.
The detection plate 414 is fixedly mounted on the upper end portion of the support shaft 411 of the conveyance gear 41 and extends in a radial direction around the support shaft 411.
The origin sensor 413 is a magnetic proximity sensor. The origin sensor 413 is located on the upper cover 441, and is provided in a range where the detection plate 414 rotates around the support shaft 411. The detection plate 414 approaches the origin sensor 413 to detect the origin position of the transport gear 41. .

The conveyance motor 42 is a stepping motor, and the conveyance amount by the articulated member 13 of the conveyance gear 41 can be arbitrarily controlled via the transmission mechanism 48.
This conveyance motor 42 is attached to the bottom plate 45 with the output shaft facing downward as shown in FIG. 14 and FIG. 15.

As shown in FIG. 14 to FIG. 18, the transmission mechanism 48 includes: an active pulley 481 fixedly mounted on the output shaft of the conveying motor 42; an intermediate pulley 482 rotatably supported on the support shaft 442 of the support arm 44; and fixed A driven pulley 483 installed on the support shaft 411 of the conveying gear 41; a timing belt 484 that is bridged from the driving pulley 481 through the intermediate pulley 482 and connected to the driven pulley 483; and a tension roller 485 that applies tension to the timing belt 484.

The intermediate pulley 482 is capable of rotating the support shaft 442 of the support arm 44, and the intermediate pulley 482 is capable of rotating independently of the rotation operation of the support arm 44.
In contrast, the driven pulley 483 is fixed to the support shaft 411 of the conveyance gear 41, and the conveyance gear 41 is also fixed to the support shaft 411. Therefore, the driven pulley 483 and the conveyance gear 41 are simultaneously rotated.

The tension roller 485 is supported by a bell crank 486 provided on the upper cover 451 of the bottom plate 45. The bell crank 486 is connected to apply tension to the direction in which the tension roller 485 is crimped from the outside of the timing belt 484 to the inside. Of the pull spring 487.

As shown in FIG. 18, the tension roller 485 is crimped to the timing belt 484, and is formed into a slightly L-shape in which the timing belt 484 sequentially connects the positions of the driving pulley 481-the intermediate pulley 482-the driven pulley 483 in order. shape.
By maintaining the timing belt 484 in such a shape, even if the rotation operation of the support arm 44 is performed, the timing belt 484 can be loosened, and the output shaft angle of the conveying motor 42 and the conveying gear 41 can be reduced. An angular offset of the rotation angle is generated.

Furthermore, as shown in FIG. 19, all the pulleys of the driving pulley 481, the intermediate pulley 482, and the driven pulley 483 of the transmission mechanism 48 may be used as a toothed pulley, and the timing belt 484 may be used as a toothed belt.

[Sewing action of zipper products by serrated lock needle sewing machine]
The sewing operation of the zigzag lock needle sewing machine 100 will be described by taking, as an example, a case where the left-side engagement member 13 on the left side of the slide fastener 10 of the slide fastener product 1 shown in FIG.

First, the origin search of the transfer gear 41 of the zipper transfer mechanism 40 is performed. That is, the control device included in the zigzag lock stitch sewing machine 100 drives the conveyance motor 42 to rotate the conveyance gear 41, and performs detection by the detection plate 414 of the origin sensor 413. When the detection plate 414 is detected, the conveyance motor 42 is stopped at the origin position of the conveyance gear 41.
In addition, the user of the sewing machine releases the connection screw 454 to release the connection between the restriction bracket 452 and the fixing plate 453, moves the bottom plate 45 to the right, and avoids the transfer gear 41 to the right of the needle drop position.

Next, the user of the sewing machine attaches the engagement member 13 to the conveying groove 243 of the needle plate 24 so that the engagement member 11 on the front side becomes the upstream side in the conveying direction of the needle drop position, and faces the left side of the engagement member 13 , The side of the edge portion 2 a is inserted into the opening portion 253, and the object to be sewn 2 is attached to the cloth material pressing member 25.
Further, the bottom plate 45 is moved to a predetermined position at the time of sewing on the left side, the connection screw 454 is rotated, and the restriction bracket 452 and the fixing plate 453 are connected again.

Then, driving of the sewing machine motor is started. When sewing is started, the material to be sewn 2 is transported forward, enters the opening portion 253 of the cloth pressing member 25, and is folded back twice to form a triple overlapping portion 2b.
Further, during sewing, the needle drop toward the needle drop points a1 to a6 in FIG. 2 is repeatedly performed, and the needle swing motor and the conveyance motor 42 are controlled for each needle drop. The sewing machine motor is provided with an encoder to detect the control timing of the needle swing motor and the conveyance motor 42 for each needle.

Specifically, if sewing is started by the needle drop at the needle drop point a1, the proper timing of detection by the encoder of the sewing machine motor is performed until the next needle drop, and the needle swing motor is executed to the left until The needle swinging up to the needle drop point a2 is moved forward to the needle drop point a2, and the conveyance motor 42 performs forward conveyance of the articulated member 13.
Positioning from needle drop point a2 to needle drop point a3, positioning from needle drop point a3 to needle drop point a4, positioning from needle drop point a4 to needle drop point a5, and positioning from needle drop point a5 to needle drop point a6 The positioning and positioning from the needle drop point a6 to the needle drop point a1 of the articulator 11 are also performed in the same manner as described above.
Furthermore, specific numerical data of the needle swinging amount of the needle swinging motor toward the needle dropping points a1 to a6, and the specific advancement amount of the advance movement by the conveying motor 42 are stored in advance in the control of the zigzag lock sewing machine 100 The data memory in the device is used to read the numerical data at each needle drop.

If all the engaging members 11 of the engaging member connecting body 13 are sewn toward the object 2 by repeatedly performing the needle dropping toward the aforementioned needle dropping points a1 to a6, the sewing machine motor, the needle swing motor, the conveying adjustment motor, and The transport motor 42 stops operating.
In addition, the user of the sewing machine releases the connection screw 454 to release the connection between the restriction bracket 452 and the fixing plate 453, moves the bottom plate 45 to the right, and avoids the transfer gear 41 to the right of the needle drop position. Thereby, the to-be-sewn material 2 and the articulation | attachment body 13 can be removed from the needle plate 24.
Furthermore, when only one of the fastener joints 13 of the slide fastener 10 of the slide fastener product 1 is sewn, the sewing of the other fastener joint 13 is also performed. In this case, in a case where the other articulator joint 13 is attached to the conveying groove 243 of the needle plate 24, and the one articulator joint 13 is sewn, the direction of the object 2 to be sewn is turned upside down After the attachment is performed, the engagement of the engagement member 13 is performed in the same manner as described above.

Furthermore, as described above, the specific numerical data of the needle swinging amount of the needle swinging motor for moving the needle toward the needle drop point a1 to a6, and the advancement amount before the motor 42 is transported are stored in the data memory in advance. .
In addition, the sewing of the needle drop at each needle drop point in FIGS. 6 to 10 is similarly performed by the amount of needle swing of the needle swing motor for performing the needle drop at each needle drop point, and by the transfer motor. 42. The specific numerical data of the forward movement amount are stored in the data memory, and the zigzag lock stitch sewing machine 100 can be used to perform sewing.

Alternatively, as shown in FIG. 20, a cylinder 47 as an actuator may be provided on the sewing head 21, and the bottom plate 45 is moved in the X-axis direction to isolate the needle drop position along the transfer gear 41. Movement in the direction of the direction. The cylinder 47 is provided on the sewing head 21 so that the movement direction of the piston rod is parallel to the X-axis direction, and the piston rod is connected to the bottom plate 45.
Thereby, the bottom plate 45 can be moved between a predetermined position at the time of sewing and the avoiding position where the conveyance gear 41 is sufficiently separated from the articulated body 13.
The cylinder 47 is controlled by a control device of the zigzag lock stitch sewing machine 100 for a solenoid valve for performing forward and backward movements of the piston rod. Specifically, control is performed in which the bottom plate 45 is moved to the time of sewing after the origin search of the conveying motor 42 is completed, after the origin search of the conveying motor 42 is completed, and before the sewing is started. Control of moving the bottom plate 45 to the avoiding position at the predetermined position after the end of sewing.

[Technical effect of the embodiment of the invention]
In the zipper product 1 described above, a needle drop point is formed in the overlapped portion 2b where the object 2 is folded back twice and overlapped into a triple by sewing, and then sewing of the engaging member 13 is performed.
Thereby, needle placement can be performed on the overlapped portions 2b which are not overlapped to form a triplet, and it is possible to increase the sewing strength of the engagement member 13 to the object 2 to be sewn.

Further, in the zigzag lock stitch sewing machine 100, the zipper transfer mechanism 40 can transport the articulated member 13 by the transfer gear 41, and guide the articulated member 13 with a needle plate 24 having a conveying groove 243, so that it can be stable and accurate. Ground transports the articulated member 13. Therefore, it is possible to perform good sewing of the joint member 13 to the object 2.

In addition, the zigzag lock stitch sewing machine 100 is provided with a cloth pressing member 25 that folds back the sewn object 2 twice, and then folds and folds it into a triplet. Therefore, the operator does not need to keep the overlapped portion 2b in a triplet and can bite. The piece-connected body 13 is stable, easily and quickly sewn to the object 2 to be sewn.

[other]
The structure of the head 112 of the engaging member 11 of the engaging member 13 of the fastener 10 is not limited to the one shown in FIG. 4. For example, it is also applicable to the head structure of various fasteners used for a general slide fastener.

The sewing machine for sewing the engaging member 13 to the object 2 is not limited to a sawtooth lock sewing machine. For example, a sewing machine such as a so-called electronic cycle sewing machine can be used which can move the holding frame arbitrarily in two directions orthogonal to each other and drop the needle at any position on the plane.
In this case, if a holding structure having a state in which the sewing object 2 is folded back twice and overlapped into a triplet is used, the sewing object 2 is maintained at the correct position when sewing the coupling member 13 at the time of sewing. Holding the frame and performing the sewing control, it is possible to perform good sewing of the zipper product 1.

[Industrial availability]

The present invention can be used for sewing of a slide fastener in which an engaging member is connected by a rope-like body.

1, 1A, 1B‧‧‧Zipper products

2‧‧‧ Quilt

2a‧‧‧Edge

2b‧‧‧ Overlapping

10‧‧‧ Zipper

11‧‧‧ Bite

12‧‧‧ Rope

13‧‧‧Bite joint

14‧‧‧Zipper Head

20‧‧‧Sewing frame

24‧‧‧ Needle plate (zip guide)

26‧‧‧ sewing needle

40‧‧‧Zipper transfer mechanism

41‧‧‧Transportation gear

42‧‧‧Transport motor

45‧‧‧ floor

46‧‧‧ Slide guide

47‧‧‧Cylinder (actuator)

100‧‧‧ Serrated Lock Needle Sewing Machine (Sewing Machine)

111‧‧‧foot

112‧‧‧Head

116, 117‧‧‧ side

242‧‧‧ pinhole

243‧‧‧Conveying ditch

413‧‧‧ origin sensor

414‧‧‧test board

a1, a11‧‧‧ head tribal pinpoint

a2 ~ a6‧‧‧‧Primary Tribe Pinpoint

D‧‧‧ offline (sewing thread)

R1, R2‧‧‧ area

t1 ~ t7‧‧‧stitch

U‧‧‧ goes online (sewing thread)

FIG. 1 is a plan view of a slide fastener product according to an embodiment of the present invention.

Fig. 2 is an enlarged plan view of a zipper product.

Fig. 3 is a perspective view of the occlusal member.

FIG. 4 is an enlarged plan view showing a part of the occluded state of the occlusal members being cut away.

FIG. 5 is a view of the needle drop point of the stitch of the occluder coupling body on the left side as viewed from the rear.

Fig. 6 is an enlarged plan view of the embodiment (2) of the zipper product.

Fig. 7 is an enlarged plan view of an embodiment (3) of a zipper product.

Fig. 8 is an enlarged plan view of the embodiment (4) of the zipper product.

Fig. 9 is an enlarged plan view of an embodiment (5) of a zipper product.

Fig. 10 is an enlarged plan view of an embodiment (6) of a zipper product.

Fig. 11 is a perspective view of a sawtooth lock needle sewing machine according to an embodiment of the present invention.

Fig. 12 is a perspective view of a needle plate.

Fig. 13 is a perspective view of a cloth pressing member.

Fig. 14 is a plan view of a zipper transport mechanism.

Fig. 15 is a rear view of the zipper transport mechanism.

Fig. 16 is a perspective view of the periphery of the needle drop position.

Fig. 17 is a rear view of the vicinity of the needle drop position.

18 is a plan view of a state where an upper cover on a bottom plate of a support mechanism and an upper cover of a support arm are removed.

FIG. 19 is a schematic diagram showing an example in which a toothed pulley is applied to a transmission mechanism.

FIG. 20 is a rear view showing a conveying mechanism in an example in which a cylinder to which a movement is given is connected to a bottom plate.

Claims (11)

A sewing method of a zipper is a sewing method of sewing the above-mentioned engagement member connection body of a zipper having an engagement member connection body in which a plurality of engagement members are connected by a rope-like body to an end edge of a sewing object. , The above-mentioned engaging member includes: a foot supported by the rope-like body; and a head of the engaging member engaged with the other engaging member coupling body protruding from the foot and forming a pair, By sewing, a needle drop point is formed in the overlapping portion where the object to be sewn is folded back twice and overlapped into a triplet, and then the sewing of the engaging body connecting body is performed. For example, the method for sewing a slide fastener according to item 1 of the scope of the patent application, wherein the cloth to be pressed is folded back twice by a cloth pressing member to form a triple overlapping portion. For example, the method for sewing a zipper of item 1 or 2 of the patent application scope, wherein a head tribe needle point is formed toward the head side of the cord body from the engaging member, and the cord body is formed toward the sewn object. Tribal pin point on the marginal side. For example, the method for sewing a zipper according to item 3 of the patent application, wherein the end point tribal needle point is provided at an end of one of the inner sides of the width of the foot of the bite with respect to the length direction of the rope-like body. The two parts of the other end part are located farther away from the engaging member than the two parts, and at a position that is within the range of the width of the foot of the engaging member, Sew so that the sewing thread from the first tribal needle point to the end edge tribal needle point of the one end portion and the end tribal needle point from the other end portion to the head tribal needle point of the adjacent bite The sewing threads respectively cross the sides of the two sides of the leg of the engaging member. For example, the method for sewing a slide fastener according to item 4 of the patent application, wherein the slide fastener is provided with a pair of the fastener joints and a fastener head for combining and separating the two fastener joints, The end edge tribal pin point provided on the one end portion and the end edge tribal pin point provided on the other end portion are provided within a range in which the zipper head passes through the sewing object. For example, the method for sewing a zipper according to any one of claims 1 to 5, wherein the aforementioned needle drop point is formed by a zigzag lock needle. A zipper product is provided with: a zipper having a pair of engaging members connected by a rope-like body, and a zipper head for joining and separating the pair of engaging members; and A sewn article which individually sew the aforementioned pair of occlusal piece joints at the edge portions of two parts is characterized in that: The above-mentioned engaging member includes: a foot supported by the rope-like body; and a head of the engaging member engaged with the other engaging member coupling body protruding from the foot and forming a pair, The stitch engagement unit is sewn by forming a needle drop point in the overlapped portion where the object to be sewn is folded back twice along the end edge portion to be tripled by sewing. For example, the zipper product according to claim 7 in which the above-mentioned needle drop point has: a tribal needle point toward the head side of the cord-like body of the bite; and the cord-like body toward the sewing object. Tribal pin point on the end side of the edge. For example, in the zipper product according to item 8 of the patent application, the end edge tribal pinpoints are provided at one end and the other end of the range of the inner side of the width of the foot of the engaging member in the length direction of the rope-shaped body. The two parts, and a position farther away from the engaging member than the two parts, and at a position that is within the range of the width of the foot of the engaging member, The sewing thread that passes from the head tribe needle point to the end edge tribal pin point of the one end portion and the end thread tribal needle point from the other end portion to the head tribe needle point of the adjacent bite is different. A side surface that spans both sides of the foot of the bite. For example, in the zipper product of the ninth scope of the patent application, the end edge tribal pin point provided on the one end portion and the end edge tribal pin point provided on the other end portion are provided on the zipper head through the sewing object. On the range. According to the zipper product according to any one of claims 7 to 10, the stitch formed at the aforementioned needle drop point is a stitch of a zigzag lock needle.