TWI821201B - sewing machine - Google Patents

Abstract

A sewing machine (100) that sews a sliding zipper (10) with a meshing element connection (13) having a plurality of meshing elements (11) connected by a rope-like body (12). The end edge portion (2a) of the object (2) is equipped with: a cloth feeding mechanism that feeds the object to be sewn; and a zipper conveying mechanism (40) that conveys the meshing element connection; the zipper conveying mechanism is equipped with: conveying The gear (41) has teeth that mesh with the meshing element of the meshing element connection; the conveyance motor (42) gives a rotational motion to the conveyance gear; and the zipper guide (24) directs the meshing element connection toward the It is guided in the same direction as the feed direction of the work being sewn. Thereby, the slide fastener can be sewn satisfactorily.

Description

sewing machine

The present invention relates to a sewing machine for sewing a sliding slide fastener in which engagement elements are connected by a rope-like body.

There is known a sliding zipper that includes a pair of meshing element connectors that connect a plurality of meshing elements via rope-like bodies, and a slider that connects and separates the pair of meshing element connectors. The meshing element of the sliding zipper has: a foot fixed to a rope-shaped body; and a head that meshes with each other when connecting a pair of meshing element connectors; the respective meshing elements of each meshing element connector, It is fixed to the string-shaped body with the head facing uniformly in the same direction (for example, see Patent Document 1). [Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Public Notice No. 40-13870

[Technical problem to be solved by the invention]

In the aforementioned sliding zipper, the engaging element connection is sewn to the edge portion of the object to be sewn, which is a sheet-like material, by linking with an overlock sewing machine. However, when sewing the meshing element coupling, in order to obtain sufficient binding force for each meshing element after sewing, it is necessary to sew so that the needle location is at an appropriate position. However, conventional sewing machines The meshing element linkage cannot be fed properly. Therefore, it is impossible to sew in such a manner that sufficient binding force is obtained for each engaging element after sewing.

The present invention aims to provide a sewing machine capable of appropriately sewing a coupling element assembly. [Technical solutions to solve the problem]

The invention described in claim 1 is: A sewing machine that sews a sliding zipper having a plurality of meshing elements connected by a rope-like meshing element connection to the end edge of an object to be sewn, and is characterized by: having: The cloth feeding mechanism is used to feed the objects to be sewn; and The zipper transport mechanism is used to transport the aforementioned meshing element connection; This zipper conveyance mechanism is provided with: a conveyance gear having teeth of the meshing element meshed with the meshing element coupling body; A conveying motor provides rotational motion to the aforementioned conveying gear; and The zipper guide guides the engagement element coupling body in the same direction as the feeding direction of the object to be sewn.

The invention described in claim 2 relates to the sewing machine described in claim 1, The system has: the conveyance gear meshed with the meshing element on the upstream side of the feed direction of the object to be sewn at the needle entry position; Engaging elements of the aforementioned conveyor gear.

The invention described in claim 3 is related to the sewing machine described in claim 1 or 2, The zipper guide has a feed groove formed in the needle plate, and guides the plurality of meshing elements of the meshing element connection in the same direction as the feeding direction of the object to be sewn.

The invention described in claim 4 is in the sewing machine described in any one of claims 1 to 3, The system is provided with a zipper pusher that prevents the meshing element coupling body conveyed by the conveyance gear from being detached upward.

The invention described in claim 5 is in the sewing machine described in any one of claims 1 to 4, The conveyance gear is supported movably in a direction away from the needle drop position.

The invention described in claim 6 relates to the sewing machine described in claim 5, The conveyance gear is supported so as to be movable together with the conveyance motor in a direction away from the needle drop position.

The invention described in claim 7 is related to the sewing machine described in claim 5 or 6, The system has an actuator as a driving source for the movement of the conveyance gear in a direction away from the needle drop position.

The invention described in claim 8 relates to the sewing machine described in any one of claims 1 to 7, A seam of a lock stitch is formed, and the engaging element connection body is sewn to the end edge of the object to be sewn.

The invention described in claim 9 is in the sewing machine described in any one of claims 1 to 8, It is a zigzag sewing machine.

The invention described in claim 10 relates to the sewing machine described in any one of claims 1 to 9, The aforementioned sewing machine is equipped with: Sewing machine motor, which moves the sewing needle up and down; The encoder detects the output shaft angle of the aforementioned sewing machine motor; and The control device controls the aforementioned transport motor; The aforementioned control device is: Each time the needle is dropped, the conveyance motor is driven at a predetermined timing based on detection by the encoder to move the meshing element coupling body by the amount of movement in the feed direction to the next needle drop point.

The invention described in claim 11 relates to the sewing machine described in claim 10, The system is equipped with: a setting input part, into which parameters including the type of sewing, sequence, number of stitches, and amount of movement are input; The control device controls the cloth feeding mechanism and the zipper conveying mechanism so that sewing is performed in accordance with the parameters input from the setting input unit.

The invention described in claim 12 relates to the sewing machine described in claim 10 or 11, The aforementioned sewing machine is equipped with: The needle swing motor is used to arbitrarily swing the sewing needle in a direction orthogonal to the conveying direction of the meshing element connection; The aforementioned control device is: Each time the needle is dropped, the needle swing motor is driven at a predetermined timing based on detection by the encoder to swing the needle by the needle swing amount to the next needle drop point.

The invention described in claim 13 relates to the sewing machine described in any one of claims 10 to 12, The aforementioned cloth feeding mechanism is equipped with a feed adjustment motor; The aforementioned control device is: Each time the needle is dropped, the feed adjustment motor is driven at a predetermined timing based on detection by the encoder to move the object to be sewn by the amount of movement in the feed direction to the next needle drop point. [Effects of the invention]

In the present invention, the zipper conveyance mechanism is provided with: a conveyance gear having teeth that mesh with the meshing element of the meshing element coupling body; a conveyance motor that imparts a rotational motion to the conveyance gear; and a zipper guide that moves the meshing element. The connecting body is guided in the same direction as the feeding direction of the object to be sewn. Thereby, conveyance can be carried out in such a manner that the teeth of the conveyance gear mesh with the heads of the continuous meshing elements of the meshing element connection, so that the meshing element connection can be arbitrarily conveyed to the target position with good accuracy. Therefore, the engagement element connection body can be properly fed, thereby positioning the needle entry point for sewing the engagement element connection body, and the engagement element connection body can be properly sewn to the object to be sewn.

[First Embodiment] Hereinafter, as a first embodiment of the present invention, a sliding slide fastener product 1 and a zigzag sewing machine 100 suitable for sewing the sliding slide fastener product 1 will be described in detail. Figure 1 is a top view of the sliding zipper product 1. In addition, the slide fastener product 1 includes not only daily necessities such as clothes, shoes, and bags, but also non-daily necessities. That is, it includes various products in which the slide fastener 10 can be used for coupling sheet-shaped sewn objects to each other, opening and closing notches or openings of the sewn objects, and the like.

The slide fastener product 1 includes a slide fastener 10 and a sewn object 2 on which the slide fastener 10 is sewn. The object to be sewn 2 of the sliding zipper product 1 includes all sheet-like materials that can be sewn. Examples of the object to be sewn 2 include cloth, knitted fabric, leather, synthetic resin, and the like. The object to be sewn 2 is provided with two end edge portions 2a facing each other. The end edge portions 2a are formed with overlapping portions 2b in which the material of the object to be sewn 2 is folded toward the back side. Furthermore, a pair of meshing element connecting bodies 13 of the sliding slide fastener 10 are individually sewn to each edge portion 2a along the edge portion 2a.

In this embodiment, the case where each edge part 2a of the object to be sewn 2 of the slide fastener product 1 is linear is exemplified. In addition, the shape of each edge portion 2a is just an example, and it goes without saying that the slide fastener 10 can be used even if it is a curved shape or other curved shape. Moreover, in the following description of the sliding slide fastener product 1 and the sliding slide fastener 10, the direction along the end edge 2a of the object to be sewn 2 is the Y-axis direction, and the direction is parallel to and orthogonal to the plane of the object to be sewn. The direction in the Y-axis direction is the X-axis direction, and the direction perpendicular to the plane of the object to be sewn is the Z-axis direction. In addition, the pair of meshing element connecting bodies 13 of the sliding slide fastener 10 are sewn to the end edge portion 2a of the object to be sewn 2 along the Y-axis direction, and the sliding member 14 is used to couple the engaging element connecting bodies 13 in the operating direction. (The upper part of the paper in Figure 1) is "front", the action direction of separating the meshing element connecting bodies 13 (the lower part of the paper in Figure 1) is "rear", and the left-hand side facing forward is "rear". "Left", the right-hand side is "Right". In addition, the current side of the paper perpendicular to the paper in Figure 1 is called "upper", and the back side of the paper is called "lower". According to this definition, in Figure 1, the object to be sewn 2 is shown in a state in which the surface of the object to be sewn 2 faces upward and the back surface faces the lower side.

[Sliding zipper] Figure 2 is an enlarged top view of the sliding zipper 10 . As shown in Figures 1 and 2, the sliding zipper 10 is provided with: a pair of meshing element connecting bodies 13, which connect a plurality of meshing elements 11 through rope-like bodies 12; and a slider 14, which performs a The coupling and separation of the meshing element coupling body 13. The meshing element 11 has legs 111 that penetrate the rope-shaped body 12 and a head 112 protruding from the legs 111. When the plurality of meshing elements 11 face the same direction as the head 112, they pass through the rope-shaped body at equal intervals. 12 are fixed to form the meshing element connection body 13 .

The rope-like body 12 connecting the meshing elements 11 can be a rope-like one that has strength and low stretchability, and can be made of monofilament, multifilament, twisted yarn, twisted rope, etc., or a composite material thereof. For the rope, The structure or type is not particularly limited. In addition, the rope-shaped body 12 may be soft and flexible, or may be flexible and rigid enough to maintain a straight shape without receiving external force.

The pair of meshing element connecting bodies 13 is sewn to each end edge portion 2a of the object to be sewn 2 such that the heads 112 of the meshing elements 11 face each other. The slider 14 has a guide path formed at the front end through which each meshing element connecting body 13 passes individually. The two guide paths meet inside and form one guide path at the rear end. That is, when a pair of separated meshing element connecting bodies 13 enters each guide path on the front end side of the slider 14, the heads 112 of the respective meshing elements 11 of each meshing element connecting body 13 will mesh until the meshing element connecting body 13 passes through the slider 14. 14, a pair of meshing element connecting bodies 13 are connected. In addition, on the contrary, when the coupled pair of meshing element connecting bodies 13 enters the guide path on the rear end side of the slider 14, the meshing state of the heads 112 of the respective meshing elements 11 of each meshing element connecting body 13 will be released. , until passing through the front end of the slider 14, the pair of meshing element connecting bodies 13 are separated.

Figure 3 is a perspective view of the meshing element 11. Fig. 3 shows the meshing element 11 of the meshing element coupling 13 on the left side in Figs. 1 and 2. In the following description of the meshing element 11 based on FIG. 3 , each part will be described in the direction of the meshing element 11 of the left meshing element coupling body 13 . In addition, the meshing element 11 of the meshing element coupling body 13 on the right side only has the direction of the head 112 opposite to the left and right, and the structure itself is the same.

The meshing element 11 is made of thermoplastic resin such as polyamide, polyoxymethylene, polypropylene, polybutylene terephthalate, etc., and is integrated with the rope-shaped body 12 by injection molding. form. In addition, the meshing element 11 is not limited to thermoplastic resin, and may be formed by die-casting of metal, such as aluminum alloy, zinc alloy, or magnesium alloy.

As shown in FIGS. 2 and 3 , each meshing element 11 has a leg portion 111 that is substantially rectangular parallelepiped-shaped, and a rope-like body 12 extends from one side surface 116 in the width direction of the leg portion 111 to the other side surface 117 . The state of is fixed for the foot 111. In addition, the "width direction of the leg part 111" means the direction along the length direction of the rope-shaped body 12. In addition, the left end portion of the leg portion 111 faces the end edge portion 2a of the object to be sewn 2, and the right end portion has a head portion 112 protruding toward the right. Furthermore, recessed portions 113 recessed along the Y-axis direction are formed on both front and rear sides of the boundary portion between the head portion 112 and the leg portion 111 to cover the entire length in the Z-axis direction. Thereby, the head 112 will protrude toward the right and the root will become a narrowed shape due to the concave portions 113 on both sides. The front end and the rear end of the head 112 are both bulged in an arc shape when viewed from above. shape. On the other hand, the shape of each recessed portion 113 when viewed from above corresponds to the shape of the front end portion and the rear end portion of the head 112 when viewed from above, and is a concave arc shape. Therefore, in the connected state of the pair of meshing element couplings 13 , the other meshing element coupling is fitted into the recessed portions 113 on both sides of the head 112 of the meshing element 11 of one meshing element coupling 13 13. The state of the front end or rear end of the heads 112 of two adjacent meshing elements 11. Thereby, in the connected state of the pair of meshing element connecting bodies 13, the heads 112 of the meshing elements 11 are constrained to each other in the front-rear direction, thereby preventing the pair of meshing element connecting bodies 13 from being separated. Moreover, as shown in FIG. 2 , the plurality of meshing elements 11 of each meshing element connecting body 13 are connected by the rope-shaped body 12 at a certain interval. However, the distance between the meshing elements 11 is set so as to separate a pair of meshing elements. When the element connecting bodies 13 are connected to each other, the head 112 of the meshing element 11 of each meshing element connecting body 13 is large enough to fit into the recess 113 of the other meshing element connecting body 13 without any gap.

FIG. 4 is an enlarged plan view showing a partially cutaway state of the meshing elements 11 . As shown in FIGS. 3 and 4 , a groove 114 along the Y-axis direction is formed on the protruding end (right end) of the head 112 of the meshing element 11 . Furthermore, a plate-shaped protrusion 115 protruding to the right at the same height as the groove 114 is formed inside the recess 113 on both front and rear sides of the meshing element 11 . These grooves 114 and protrusions 115 are configured so that when a pair of meshing element connecting bodies 13 are connected, the protrusions 115 on the front and rear sides of the meshing element 11 of each meshing element connecting body 13 will fit into the other meshing element. In the groove 114 of the engaging element 11 of the connecting body 13 . Thereby, the head portion 112 of each engaging element 11 of one engaging element coupling body 13 and the head portion 112 of each engaging element 11 of the other engaging element coupling body 13 are constrained to each other in the Z-axis direction. state, so even if it receives external force in the Z-axis direction, it can effectively maintain the connected state.

[Example (1) of appropriate needle entry points for sewing sliding zippers] Embodiment (1) of the sewing method of the sliding zipper 10 and the needle entry point of the formed seam will be described based on FIGS. 2 and 5 . Figure 5 is a view of the needle entry point of the slit of the left meshing element coupling body 13 viewed from the rear. Each engagement element connection 13 of the slide fastener 10 is sewn to the end edge portion 2a of the object to be sewn 2 using a lock stitch formed by a zigzag sewing machine 100 to be described later. Therefore, a seam is formed on the front side of the object to be sewn 2 by the upper thread U, and a seam is formed on the back side by the lower thread D.

When sewing the meshing element connecting body 13, as shown in FIG. 2, a three-point zigzag seam is sewn by a zigzag sewing machine 100 to form meshing with the rope-shaped body 12 for each meshing element 11. The head of the element 11 on the head 112 side falls into the needle point a1, and the end edge of the rope-shaped body 12 on the end edge portion 2a side of the object to be sewn 2 falls into the needle points a2 to a6. The needle entry points are formed sequentially from a1 to a6. Furthermore, the meshing element 11 is fixed to the object to be sewn 2 through the slits t1 to t6 formed by the upper thread U and the lower thread D as described below. t1: The seam formed between needle entry points a1-a2 t2: The seam formed between needle entry points a2-a3 t3: The seam formed between needle entry points a3-a4 t4: The seam formed between needle entry points a4-a5 t5: The seam formed between needle entry points a5-a6 t6: The needle entry point a1 is at the needle entry point a6-a11 (the head of the meshing element 11 on the rear adjacent side is the needle entry point a1. However, in order to make the distinction expediently, it is recorded as "a11" in the description here and in Figure 2. The gap formed between Figures 6 to 10 (the same applies to Figures 6 to 10 described later) In addition, the sewing system is not limited to a three-point zigzag seam, but may be a two-point or more zigzag seam.

The head needle landing point a1 is located on the side surface 116 of the front side of the leg 111 of the engagement element 11 as the fixing object in the Y-axis direction, and is on the right side of the rope-shaped body 12 in the X-axis direction and close to the rope-shaped body 12 s position. As for the needle drop point a1 of the head, although the zigzag sewing machine 100 will drop the needle into an empty area, the sewing needle of the sewing machine 100 can be slidably connected to the rope-shaped body 12 or the engaging element 11 when rising to form a The loop of the upper thread U can be caught by the shuttle and wound around the lower thread D, so a node composed of the upper thread U and the lower thread D can be formed at the needle entry point a1 of the head.

The edge drop needle points a2 to a6 are all located in the overlapping portion 2b of the object to be sewn 2, and are located in the region R1 within the width of the foot portion 111 of the engaging element 11 that is fixed in the Y-axis direction. within. Furthermore, it is preferable that only two of the edge-tuck needle points a2 and a6 among the edge-tuck needle points a2 to a6 are located in the aforementioned region R1 and divided by the overlap width w of the overlapping portion 2b of the object to be sewn 2 Half the width w/2 is within the region R2 on the front end 2aa side of the end edge portion 2a of the center. In addition, in Figure 2, the regions R1 and R2 are hatched to clearly indicate the range of each region. In addition, the two end edge needle points a2 and a6 are located in the aforementioned region R2 and are respectively arranged at one end (front end) and the other end (rear end) in the Y-axis direction.

In addition, the needle points a2 and a6 at the end edge are preferably arranged as close to the front and as far back as possible in the area R2. In addition, the edge drop needle points a2 and a6 are preferably arranged in the region R2 as close as possible to the front end 2aa of the edge portion 2a in the X-axis direction. For example, as shown in Figure 5, if the object to be sewn 2 is folded back to form the overlapping portion 2b, a flat portion along the X-Y plane will be formed at the end edge 2a of the object to be sewn 2, and the folded portion will form a flat portion along the X-Y plane. Curved part. It is preferable that the end edge falling needle points a2 and a6 are arranged within the width v of the portion bent due to reflection in the X-axis direction.

The three points of the edge trimming needle points a3 to a5 are located in the area of the front end 2aa of the edge portion 2a further away from the edge portion 2a than the area R2 in the aforementioned area R1. In the Y-axis direction, the edge trimming needle point a2 and the edge trimming point are They are arranged in a row along the Y-axis direction within the range between the needle points a6.

When sewing, the zigzag sewing machine 100 arranges the end edge portion 2a of the object to be sewn 2 and the rope-shaped body 12 of one of the meshing element connecting bodies 13 respectively along the Y-axis direction, and in such a state that they are close to each other, one side faces While forward feeding, the sewing needle is moved along the X-axis direction, and the needle is dropped from the front side of the meshing element 11 to each needle entry point a1 to a6 in order to form a lock seam. Seam openings t1 to t6 are sewn together.

The seam t1 composed of the upper thread U and the lower thread D between the needle entry points a1-a2 and the seam t6 formed by the upper thread U and the lower thread D between the needle entry points a6-a11 formed by the aforementioned sewing are formed respectively. They are the side surfaces 116 and 117 on both sides of the Y-axis direction of the leg portion 111 of the engagement element 11 of the fixed object. This is because the two points a2 and a6 of the end edge are located in the area R2 and are arranged at the front end and the rear end. For example, as shown in the comparative example (1) in Figure 6, if the two points a2 and a6 of the end edge are in the area R2, far away from the front end and the rear end and close to the center, then the seam t1 and The seam t6 will not span the side surfaces 116 and 117 respectively, but will span the top of the foot 111 (the lower thread D will span the bottom). In addition, in Figure 6, the illustration of the needle points a3 and a5 at the edge is omitted. However, as shown in Figure 2, if the two points a2 and a6 of the end edge needle points are located at the front end and the rear end in the area R2, then the seam t1 and seam t6 of the upper thread U and lower thread D can be respectively Across sides 116, 117.

The aforementioned slits t1 and t6 are in a state of crossing the side surfaces 116 and 117 respectively, whereby the upper thread U and the lower thread D forming the slits t1 and t6 are sewn in contact with the legs 111 of the meshing element 11 The state of the corner on the 2nd side of the object. Thereby, the upper thread U and the lower thread D are held from the side surfaces 116 and 117 in a manner that covers the meshing element 11, so that the meshing element 11 can be restrained from moving along the Y-axis direction, and the head 112 of the meshing element 11 can be restrained from moving along the Y-axis direction. The head 112 of the meshing element 11 can be prevented from swinging in the Y-axis direction. Therefore, the slide fastener product 1 can perform a smooth connecting or disconnecting operation through the slider 14 . On the other hand, when the slit t1 and the slit t6 span as shown in Figure 6, the upper thread U and the lower thread D forming the slits t1 and t6 do not come into contact with the corners of the leg 111, so the above-mentioned thread cannot be suppressed. Movement or swing in all directions. In addition, it is difficult to perform a smooth connecting or disconnecting operation using the slider 14 .

In addition, for comparison, a comparative example (2) in which the meshing element 11 is sewn with seams formed by needle entry points a1, a3, a4, and a5 other than the needle entry points a2 and a6 is shown in FIG. 7 express. In this comparative example (2), the upper thread U and the lower thread D are formed on the seam formed between the needle entry points a1-a3, and the upper thread U and the lower thread D are formed on the seam formed between the needle entry points a5-a11. , even if they span the side surfaces 116 and 117 respectively and come into contact with the corner of the leg 111 on the side of the object to be sewn 2, the same effect as the seams t1 and t6 cannot be obtained. In this comparative example (2), the points far away from the corners of the legs 111 of the meshing element 11 are the needle entry points a3 and a5, rather than the needle entry points a2 and a6. Therefore, the effect of constraining the meshing element 11 through these corners is It is weak, and the possibility that the slit will cross over the corner part and the upper surface of the leg part 111 will also increase, so the movement or swing of the aforementioned engaging element 11 cannot be fully suppressed.

In addition, in the embodiment (1) in which the needle drop point is appropriate, the edge drop stitches are formed at a position further away from the head drop needle point a1 than the edge drop stitch points a2 and a6 in the overlapping portion 2b of the object to be sewn 2 Point a3~a5. Thereby, the deflection of the object to be sewn 2 in the overlapping portion 2b can be effectively suppressed, so the movement and swing of the meshing element 11 can be suppressed more effectively. In addition, the three points of the edge falling needle points a3 to a5 may be arranged in a region further away from the front end 2aa of the edge portion 2a than the region R1. At this time, since the upper thread U and the lower thread D maintain the overlapping portion 2b through the slit t2 formed between the needle entry points a2 and a3 and the slit t5 formed between the needle entry points a5 and a6, overlapping can be suppressed. Deflection of the object to be sewn 2 in part 2b.

In addition, the aforementioned seams t1 to t6 are all lock stitch seams, so the binding force of each meshing element 11 can be easily increased by adjusting the yarn tension, and the movement of the meshing element 11 can be more effectively restrained. and swing.

[Example (2) of appropriate needle entry points for sewing sliding zippers] Embodiment (2) of the sewing method of the sliding slide fastener 10 and the needle entry point of the formed seam will be described based on FIG. 8 . Fig. 8 is a top view of the sliding slide fastener product 1A in which the sliding slide fastener 10 is sewn to the object 2 to be sewn at an appropriate needle entry point. In order to sew each engaging element 11 of each engaging element connecting body 13 of the sliding slide fastener 10 in this sliding slide fastener product 1A, the aforementioned head falling needle points a1 and the aforementioned edge falling needle points a2 and a6 are formed and sewn. write. In addition, the aforementioned end edge falling needle points a3 to a5 are not formed. The formation positions of the head needle point a1 and the edge needle points a2 and a6 are the same as the aforementioned sliding zipper product 1. Therefore, the edge drop needle points a2 and a6 are provided at the front end and the rear end of the region R2 of the overlapping portion 2b of the object 2, and more preferably within the width v of the portion bent due to reflection. inside (refer to Figures 2 and 5).

Through the aforementioned needle entry points a1, a2, and a6, the aforementioned seam t1 is formed between the needle entry points a1-a2, the seam t7 is formed between the needle entry points a2-a6, and the aforementioned seam t7 is formed between the needle entry points a6-a11. The aforementioned seam t6 is formed between them.

When sewing, the zigzag sewing machine 100 arranges the end edge portion 2a of the object to be sewn 2 and the rope-shaped body 12 of one of the meshing element connecting bodies 13 respectively along the Y-axis direction, and in such a state that they are close to each other, one side faces While forward feeding, the sewing needle is moved along the X-axis direction, and each meshing element 11 is sequentially placed at each needle entry point a1, a2, a6 from the front side, so as to sequentially The seam openings t1, t7, and t6 of the lock stitch are formed and sewing is performed.

In this case, the slit t1 and the slit t6 are also formed so as to span the side surfaces 116 and 117 on both sides in the Y-axis direction of the leg portion 111 of the engagement element 11 to be fixed. Thereby, the upper thread U and the lower thread D are held from the side surfaces 116 and 117 so as to wrap the meshing element 11, so that the movement of the meshing element 11 along the Y-axis direction and the swing of the head 112 along the Y-axis direction can be suppressed. , and the swing of the head 112 around the Y-axis. Therefore, in the sliding zipper product 1A, smooth connecting or disconnecting operations can be performed by the slider 14 .

[Example (3) of appropriate needle entry points for sewing sliding zippers] Embodiment (3) of the sewing method of the sliding slide fastener 10 and the needle entry point of the formed seam will be described based on FIG. 9 . Fig. 9 is a top view of the sliding slide fastener product 1C in which the sliding slide fastener 10 is sewn to the object to be sewn 2 at an appropriate needle entry point. In this sliding slide fastener product 1C, in order to sew each engaging element 11 of each engaging element connecting body 13 of the sliding slide fastener 10, the aforementioned head falling needle points a1 and the aforementioned edge falling needle points a2 to a6 are formed and sewn. write. In addition, although it is preferable to form the needle points a3 to a5 at the edge, it is not necessary. The formation position of the head needle point a1 is the same as that of the aforementioned sliding zipper product 1. The formation positions of the end edge needle points a2 and a6 are related to the range of the aforementioned slider 14 passing through the object 2 to be sewn. The straight line S in FIG. 9 represents the trajectory along which the outermost end of the slider 14 in the X-axis direction moves to connect or disconnect the pair of meshing element couplings 13 . That is, the area closer to the meshing element connecting body 13 than the straight line S is the range in which the slider 14 passes through the object to be sewn 2 . In addition, the end edge needle points a2 and a6 are provided within the range where the slider 14 passes over the object to be sewn 2, and the front end portion and the inside of the region R3 of the width of the leg portion 111 of the meshing element 11 in the Y-axis direction. rear end. On the other hand, the edge drop needle points a3 to a5 are preferably provided in the region R1 as mentioned above, but they may be provided further away from the meshing element connecting body 13 than the overlapping portion 2b of the object to be sewn 2 .

[Other examples of needle entry points for sliding zipper sewing] Other examples of the sewing method of the sliding slide fastener 10 and the needle entry point of the formed seam will be described with reference to Fig. 10 . Fig. 10 is a top view of the slide fastener product 1B in which the slide fastener 10 is sewn to the object to be sewn 2 according to another example of the needle entry point. In this sliding slide fastener product 1B, in order to sew each engaging element 11 of each engaging element connecting body 13 of the sliding slide fastener 10, the aforementioned head falling needle point a1 and the aforementioned edge falling needle points a3 to a5 are double formed. Proceed to sew. In addition, the aforementioned end edge falling needle points a2 and a6 are not formed. The forming positions of the head falling needle points a1 and the edge falling needle points a3 to a5 are the same as the aforementioned sliding zipper product 1.

The same seam as the comparative example (2) of the aforementioned Figure 7 is formed twice by the aforementioned needle entry points a1, a3 to a5. When sewing, the zigzag sewing machine 100 arranges the end edge portion 2a of the object to be sewn 2 and the rope-shaped body 12 of one of the meshing element connecting bodies 13 respectively along the Y-axis direction, and in such a state that they are close to each other, one side faces While forward feeding, the sewing needle is moved along the X-axis direction, and each meshing element 11 is sequentially placed at each needle entry point a1, a3 ~ a5 from the front side, so as to sequentially The seams that form the lockstitch. Moreover, when the formation of the slit covering the entire length of the meshing element connector 13 is completed, the process is repeated to form a slit covering the entire length of the meshing element connector 13 , thereby forming a double slit.

Since there is no seam caused by the edge drop of the needle points a2 and a6, when only a single layer is sewn, as in the comparative example (2) in Figure 7, the binding force of the meshing element 11 is reduced, making it impossible to The movement or swing is fully suppressed; however, in the example of Figure 10, double sewing is performed, so the binding force of the meshing element 11 can be strengthened, and the movement or swing of the meshing element 11 can be fully suppressed. In addition, it is also possible to form a seam formed by the needle points a2 and a6 at the end edge and sew it twice so as to constrain the meshing element 11 more firmly. In addition, the seams may be formed more repeatedly to form three or more seams.

[Zigzag sewing machine] A zigzag sewing machine 100, which is a sewing machine suitable for sewing the pair of meshing element couplings 13 of the aforementioned slide fastener product 1 to the object to be sewn 2, will be described with reference to the drawings. Figure 11 is a perspective view of the zigzag sewing machine 100.

This zigzag sewing machine 100 is provided with: a sewing machine frame 20 having a sewing machine base 21; a cloth pressing member 25 that presses the workpiece 2 provided on the needle plate 24 of the sewing machine base 21 from above; and a needle up and down movement mechanism. , the sewing needle 26 is moved up and down with respect to the object to be sewn 2 on the needle plate 24, and the needle is dropped while swinging left and right; the cloth feeding mechanism is to feed the object to be sewn 2 from the lower side of the needle plate 24 through the feed teeth. The cloth is fed in a predetermined feeding direction; the shuttle mechanism is used to wrap the lower thread D around the upper thread U of the sewing needle 26; In addition, the other structures except the slide fastener conveying mechanism 40 are the same as the well-known structures of a general zigzag sewing machine, so illustration is omitted and a brief description is given.

[Sewing machine frame] The aforementioned sewing machine frame 20 is provided with: a sewing machine base 21 located at the lower part of the entire zigzag sewing machine 100; an upright trunk portion 22 attached to one end of the sewing machine base 21 and standing upward; and a sewing machine arm 23. It extends in a predetermined direction from the upper end of the upright trunk part 22 . In addition, in the following description, the length direction of the sewing machine base 21 and the sewing machine arm 23 of the zigzag sewing machine 100 is referred to as the Side 22 is "right". In addition, the zigzag sewing machine 100 conveys the work to be sewn 2 and the meshing element coupling 13 on the needle plate 24 in a direction orthogonal to the X-axis direction, with the conveying direction being the Y-axis direction, and the downstream side of the conveying direction being " "Front", and the upstream side of the conveyance direction is "Rear". In addition, let the direction orthogonal to the aforementioned X-axis direction and Y-axis direction be the Z-axis direction, and let one side be "upper" and the other side be "lower". In addition, with respect to the X-Z axis direction defined for the aforementioned sliding zipper product 1, during sewing, the sewing object 2 and the meshing element coupling body 13 provided with the sliding zipper product 1 are connected to the aforementioned zigzag sewing machine 100. The status is consistent.

[Needle up and down movement mechanism] The needle up and down moving mechanism is equipped with: a needle bar 27, which holds the sewing needle 26; a sewing machine motor, which is used as a driving source for sewing; an upper shaft, which is rotationally driven by the sewing machine motor; and a crank mechanism, which controls the rotation of the upper shaft. The needle bar 27 is converted into a reciprocating motion in the up and down direction; the needle bar support base supports the needle bar in a manner that the needle bar can move up and down; and the needle swing motor allows the needle bar support base to move arbitrarily along the X-axis direction. . This needle up-and-down movement mechanism moves the sewing needle 26 up and down at a sewing speed corresponding to the rotation speed of the sewing machine motor, and can set the needle drop position of the sewing needle 26 along the X direction orthogonal to the conveyance direction of the meshing element connecting body 13 The axis direction can be moved and adjusted arbitrarily.

[Shuttle mechanism] The shuttle mechanism includes a shuttle provided on the lower side of the needle plate 24 and a transmission mechanism that imparts rotational force to the shuttle from a sewing machine motor. The shuttle system houses a bobbin on which the bobbin thread D is wound, and is provided with a hook on the outer periphery. Then, the hook catches the loop of the upper thread that has passed through the sewing needle 26, and the bobbin is passed through the loop of the upper thread, whereby the lower thread D is wound around the upper thread U to form a knot. In addition, the shuttle system can use vertical shuttles, horizontal shuttles, etc., and either half-rotating or full-rotating shuttles can be used.

[cloth feeding mechanism] The cloth feeding mechanism is equipped with: feed teeth that protrude and retract from the opening 241 of the needle plate 24 (see FIG. 12); and a feed transmission mechanism that combines the reciprocating motion in the Z-axis direction and the Y-axis direction. The reciprocating action is transmitted to the feed teeth. The feed teeth have serrated teeth that protrude and retract from the opening 241 formed in the needle plate 24. The feed transmission mechanism obtains power from the sewing machine motor and converts it into a reciprocating motion along the Z-axis direction and a reciprocating motion along the Z-axis direction. The reciprocating motion in the Y-axis direction is transmitted to the feed teeth, whereby the feed teeth will perform an elliptical motion synthesized by the reciprocating motion back and forth in the Y-Z plane, and when the upper part of the ellipse moves, the top of the tooth will move sideways The object to be sewn 2 can be fed forward while protruding upward from the opening 241 and moving forward. In addition, this cloth feeding mechanism can arbitrarily adjust the feeding amount of the object to be sewn 2 in the Y-axis direction of each needle. In addition, the cloth feeding mechanism is provided with a feed adjustment motor for arbitrarily adjusting the cloth feed amount, and the feed amount may be adjusted by the feed adjustment motor.

[needle plate] Figure 12 is a perspective view of the needle plate 24. The needle plate 24 is provided on the upper surface of the sewing machine base 21 at the needle entry position of the sewing needle 26, and is installed so that the upper surface of the needle plate 24 is flat and flush with the upper surface of the sewing machine base 21. The needle plate 24 is a rectangular flat plate, and the object to be sewn 2 is conveyed along the left half of the upper surface of the needle plate 24 in the Y-axis direction.

A slit-shaped pinhole 242 along the X-axis direction is formed through the center of the needle plate 24, and three openings into which the aforementioned feed teeth protrude are formed through the needle hole 242 at the front, rear and left sides. 241. By forming the needle hole 242 into a slit shape along the X-axis direction, it is possible to respond to needle entry by swinging the needle along the X-axis direction.

In addition, a feed groove 243 for engaging the meshing element coupling 13 along the Y-axis direction is formed in the center portion of the upper surface of the needle plate 24 in the X-axis direction. The width of the feed groove 243 in the X-axis direction is almost equal to or slightly wider than the length of the meshing element 11 in the X-axis direction, and can accommodate the meshing element connecting body 13 in the feeding groove 243 and connect the meshing element connecting body 13 It is guided along the Y-axis direction same as the conveyance direction of the object to be sewn 2. In addition, the depth of the feed groove 243 is shallower than half the width of the meshing element 11 in the Z-axis direction, so that the workpiece 2 on the needle plate 24 is arranged at the center of the meshing element 11 in the Z-axis direction. In addition, the front end portion and the rear end portion of the feed groove 243 are formed so that the inner bottom surface of the groove has a slope shape. In addition, the aforementioned pinhole 242 is formed across the central portion of the feed groove 243 in the Y-axis direction. The needle plate 24 functions as a slide fastener guide by guiding the meshing element connecting body 13 in the same Y-axis direction as the feeding direction of the object to be sewn 2 via the feed groove 243 .

[pressing parts] Figure 13 is a three-dimensional view of the surroundings of the needle drop position. The presser 25 is supported by being pressed downward on the needle plate 24 by a support bracket 251 provided on the sewing machine base 21 . The cloth pressing member 25 is in the shape of a rectangular plate along the Y-axis direction, and has a semi-elliptical notch 252 formed on the right end edge to avoid the descending sewing needle 26. This notch 252 overlaps with the left half of the pinhole 242 of the needle plate 24 when viewed from above. The cloth pressing member 25 applies pressing pressure to the workpiece 2 conveyed on the needle plate 24 by the pressing force from the support bracket 251. In addition, the height or pressing force of the cloth pressing member 25 can be adjusted by a cloth pressing member lifting motor 253 (see FIG. 31) that moves the cloth pressing member 25 up and down. Thereby, the pressing pressure can be changed according to the thickness of the object to be sewn.

[zipper transport mechanism] Figure 14 is a top view of the zipper conveying mechanism 40, and Figure 15 is a rear view. As shown in the figure, the zipper conveyance mechanism 40 is provided with: a conveyance gear 41 having teeth that mesh with the meshing element 11 of the meshing element coupling body 13; a conveyance motor 42 that imparts rotational motion to the conveyance gear 41; and a support mechanism 43. The transmission mechanism 48 supports the conveyance gear 41; the transmission mechanism 48 transmits the rotational force from the conveyance motor 42 to the conveyance gear 41; and the zipper presser 49 prevents the meshing element coupling 13 conveyed by the conveyance gear 41 from being separated upward.

Figure 16 is a rear view of the surrounding area where the needle is dropped. As shown in FIGS. 13 and 16 , the conveyance gear 41 is a spur gear equipped with teeth on the outer periphery that can mesh with one meshing element connecting body 13 or the heads 112 of a plurality of meshing elements 11 along the Y-axis direction. , and is supported rotatably around the Z-axis by the support mechanism 43 . The pitch width of the conveying gear 41 is consistent with the pitch of each meshing element 11 of the meshing element connecting body 13, and its tooth width is the width of the Z-axis direction of the meshing element 11 minus the feed groove 243 on the needle plate 24. The depth is almost equal to the width. Therefore, the upper surface of the meshing element 11 of the meshing element connecting body 13 conveyed in the feed groove 243 of the needle plate 24 and the upper surface of the conveyance gear 41 are located at the same height. The conveyance gear 41 is disposed to the right of the needle entry position, and is disposed to mesh with the meshing element connecting body 13 from the right side with the head 112 of each meshing element 11 facing rightward. Therefore, when rotation is applied to the conveyance gear 41, the meshing element coupling body 13 can be conveyed in the Y-axis direction.

As shown in Figures 13 and 16, the zipper presser 49 is supported by the base plate 45 of the support mechanism 43 in front of the needle entry position, and extends rearward to the needle entry position. Furthermore, the lower surface of the extended end of the zipper presser 49 is at a height that is in contact with or close to the upper surface of the meshing element 11 of the meshing element connecting body 13 in the feed groove 243 of the needle plate 24 at the needle drop position. Thereby, in the feed groove 243 , the meshing element coupling body 13 meshed with the conveyance gear 41 can be prevented from being separated upward relative to the conveyance gear 41 .

In addition, a semi-elliptical notch 491 for avoiding the descending sewing needle 26 is formed on the left edge of the zipper presser 49 on the left side of the extended end. This notch 491 overlaps with the right half of the pinhole 242 of the needle plate 24 when viewed from above.

FIG. 17 is a top view of the state in which the upper cover 451 of the base plate 45 of the support mechanism 43 and the upper cover 441 of the support arm portion 44 are removed. As shown in FIGS. 14 and 17 , the support mechanism 43 includes a support arm 44 that supports the conveyance gear 41 , a base plate 45 that supports the support arm 44 , and a base plate 45 that can move along the X-axis. The sliding guide 46 is supported in a sliding manner.

The base plate 45 is a flat plate along the X-Y plane, and is arranged on the sewing machine base 21 through the sliding guide 46 so as to be positioned between the needle entry position and the upright trunk 22 . The base plate 45 supports the conveyance gear 41 through the support arm 44, and also supports the conveyance motor 42 and the transmission mechanism 48. Furthermore, an upper cover 451 is mounted on the upper part of the base plate 45 to cover a part of the transmission mechanism 48 supported by the base plate 45 .

The sliding guide 46 includes a movable block 461 fixedly connected to the base plate 45, and a slide rail 462 installed on the sewing machine base 21 along the X-axis direction, and can move the base plate 45 along the direction of the movable block 461. Slide in the X-axis direction.

On the other hand, a restriction bracket 452 for restricting the sliding movement of the base plate 45 along the X-axis direction is installed on the right end of the base plate 45 . The restriction bracket 452 extends to the right, and a connecting screw 454 is rotatably supported at the extended end. The sewing machine base 21 is provided with a screw hole into which the connecting screw 454 can be screwed. The fixed plate 453. Furthermore, with the left side of the extended end of the restriction bracket 452 in contact with the right side of the fixing plate 453, the base plate 45 can be fixed at a predetermined position during sewing by being connected to each other by the connecting screw 454. Moreover, if the connection screw 454 is loosened and the restriction bracket 452 is separated to the right from the fixed plate 453, the base plate 45 can be moved to the right from a predetermined position. When the base plate 45 is moved to the right, the right end of the base plate 45 comes into contact with the left surface of the fixed plate 453 . This contact position is the movable limit of the right side of the base plate 45 .

As described above, the base plate 45 supports the conveyance gear 41 via the support arm portion 44, and the conveyance gear 41 is conveyed from the right side of the meshing element 11 of the meshing element coupling 13 to be conveyed. The aforementioned predetermined position of the base plate 45 during sewing is such that the tooth top of the conveyance gear 41 can properly mesh with the head 112 of the meshing element 11 when conveying the meshing element coupling 13, and can be properly rotated. Transport location. Furthermore, when the connecting screw 454 is loosened and the restriction bracket 452 is separated from the fixed plate 453, the locking of the head 112 of the meshing element 11 of the meshing element connecting body 13 can be released by moving to the right of the base plate 45. In the meshed state, the tooth tip of the conveying gear 41 is isolated to the right. Thereby, for example, maintenance of the slide fastener conveyance mechanism 40 or operations of removing the engagement element coupling body 13 from the needle plate 24 can be easily performed.

As shown in FIGS. 14 and 17 , the support arm 44 is supported rotatably about a support shaft 442 along the Z-axis direction at the left end of the base plate 45 . The rotating end is facing right and rearward. Furthermore, the support arm 44 is connected to the rotation end portion and rotatably supports the conveyance gear 41 through the support shaft 411 . In addition, a leaf spring-shaped latch plate 412 fitted into a tooth groove on the outer periphery of the conveyance gear 41 is attached to the rotation end of the support arm 44 . The latch plate 412 has a protrusion that presses against the conveyance gear 41 with a certain spring pressure, thereby preventing the conveyance gear 41 from backlash.

An upper cover 441 is fixedly mounted on the upper part of the support arm 44 , and one end of the tension spring 443 is connected to the front end of the upper cover 441 . The other end of the pull spring 443 is connected to the base plate 45 and provides tension in the direction in which the conveyance gear 41 supported by the support arm 44 approaches the meshing element coupling body 13 side.

In addition, a restriction opening 445 is formed on the rotation end side of the upper cover 441 , into which the extended end of the rotation angle restriction plate 444 fixedly supported by the base plate 45 is loosely inserted. Thereby, the angular range in which the support arm 44 on the base plate 45 can rotate is limited, so that the transport gear 41 can only move between the left extreme position and the right extreme position. This rotatable angle range enables the conveying gear 41 to properly engage the teeth of the conveying gear 41 with the head 112 of the meshing element 11 of the meshing element connecting body 13 located in the feed groove 243 with a certain pressing force. position to a position where the conveying gear 41 is completely disengaged from the meshing state of the head 112 of the meshing element 11 . In this way, the support arm 44 can be rotated within a predetermined angular range, whereby the base plate 45 can be continuously maintained at the predetermined position during sewing. For example, the support arm 44 can be rotated to the right by manual work. When sewing is completed, the meshing state between the conveyance gear 41 and the meshing element 11 of the meshing element connecting body 13 is released, and the meshing element connecting body 13 can be removed from the needle plate 24 .

In addition, the origin sensor 413 of the conveyance gear 41 and its detection plate 414 are installed on the upper surface of the upper cover 441 that supports the arm portion 44 . The detection plate 414 is fixedly mounted on the upper end of the support shaft 411 of the conveyance gear 41 and extends in the radial direction with the support shaft 411 as the center. The origin sensor 413 is a magnetic proximity sensor. The origin sensor 413 is attached to the upper surface of the upper cover 441 and is disposed within the range in which the detection plate 414 rotates around the support shaft 411. When the detection plate 414 approaches the origin sensor 413, it detects the movement of the conveyance gear 41. origin position.

The conveyance motor 42 is a stepping motor, and through the transmission mechanism 48, the feed amount of the meshing element connecting body 13 caused by the conveyance gear 41 can be controlled arbitrarily. As shown in FIGS. 14 and 15 , the conveyance motor 42 is mounted on the base plate 45 with the output shaft facing downward.

The transmission mechanism 48, as shown in Figures 14 to 17, is provided with: a driving pulley 481 fixedly mounted on the output shaft of the transport motor 42; and an intermediate pulley 482 rotatably supported on the support arm. The supporting shaft 442 of 44; the driven pulley 483 is fixedly installed on the supporting shaft 411 of the conveying gear 41; the synchronous belt 484 is installed across the driven pulley 483 from the driving pulley 481 through the intermediate pulley 482; and the tension roller 485 is for Timing belt 484 imparts tension.

The intermediate pulley 482 is rotatable with respect to the support shaft 442 of the support arm 44 , and the intermediate pulley 482 is rotatable independently of the rotation of the support arm 44 . On the other hand, the driven pulley 483 is fixedly mounted on the support shaft 411 of the transport gear 41, and the transport gear 41 is also fixed on the support shaft 411. Therefore, the driven pulley 483 and the conveyance gear 41 perform interlocking rotation at the same time.

The tension roller 485 is supported by a double arm crank 486 provided on the upper cover 451 of the base plate 45. The double arm crank 486 is connected to a pull spring 487, and the pull spring 487 is used to synchronize the tension roller 485. Tension is applied to the outer side of the belt 484 in a direction in which the belt 484 is pressed to the inner side.

In addition, as shown in FIG. 17 , the tension roller 485 is crimped so that the timing belt 484 has a substantially L-shaped shape connecting the respective positions of the driving pulley 481 - the intermediate pulley 482 - the driven pulley 483 in sequence. For timing belt 484. By maintaining the timing belt 484 in such a shape, even when the support arm 44 is rotated, the timing belt 484 can be reduced in slack, and the angle of the output shaft of the transportation motor 42 and the transportation gear 41 can be reduced. The situation when the rotation angle deviates.

Moreover, as shown in FIG. 18, the driving pulley 481, the intermediate pulley 482, and the driven pulley 483 of the transmission mechanism 48 may all be toothed pulleys, and the timing belt 484 may be a toothed belt.

[Sewing action of sliding zipper products performed by zigzag sewing machine] Taking the case where the left engaging element connecting body 13 of the sliding slide fastener 10 of the sliding slide fastener product 1 in Figure 2 is sewn to the end edge portion 2a of the object to be sewn 2 as an example, the sewing operation of the zigzag sewing machine 100 Explain.

First, the origin search of the conveyance gear 41 of the zipper conveyance mechanism 40 is performed. That is, the control device provided in the zigzag sewing machine 100 drives the conveyance motor 42 to rotate the conveyance gear 41, and detects the detection plate 414 of the origin sensor 413. And when the detection plate 414 is detected, the conveyance motor 42 is stopped at the origin position of the conveyance gear 41. Next, the user of the sewing machine rotates the connection screw 454 to release the connection state between the restriction bracket 452 and the fixed plate 453, moves the base plate 45 to the right, and retracts the conveyance gear 41 to the right of the needle entry position.

Next, the user of the sewing machine sets the meshing element connecting body 13 to the feed groove 243 of the needle plate 24 so that the first meshing element 11 is positioned at the needle drop position, and the end edge 2a is aligned along the meshing element. The object to be sewn 2 is placed under the cloth pressing member 25 on the left side of the connecting body 13 . Next, the base plate 45 is moved to a predetermined position on the left side during sewing, and the connecting screw 454 is rotated to connect the restricting bracket 452 and the fixing plate 453 again.

After that, start driving the sewing machine motor. During sewing, the needle placement at the needle entry points a1 to a6 in Figure 2 is repeated, and the needle swing motor and the conveyance motor 42 are controlled each time the needle is placed. An encoder is integrated with the sewing machine motor to detect the control timing of the needle swing motor and the conveyance motor 42 for each stitch.

Specifically, when sewing is started by needle entry at needle entry point a1, at the appropriate timing detected by the encoder of the sewing machine motor, the needle swing motor will execute the operation to reach the needle entry point before the next needle entry. The needle swings toward the left until it reaches a2, and the conveyance motor 42 performs forward movement of the meshing element connecting body 13 by the forward movement amount until it reaches the needle entry point a2. Positioning from needle entry point a2 to needle entry point a3, positioning from needle entry point a3 to needle entry point a4, positioning from needle entry point a4 to needle entry point a5, positioning from needle entry point a5 to needle entry point a6 Positioning and positioning from the needle entry point a6 to the needle entry point a1 of the next meshing element 11 are all performed in the same manner as described above. In addition, the specific numerical data of the needle swing amount of the needle swing motor and the forward movement amount of the conveyance motor 42 for performing needle drop at the needle drop points a1 to a6 are stored in the control device of the zigzag sewing machine 100 in advance. in the data memory, so the numerical data will be read every time the needle is dropped.

When the sewing of all the engaging elements 11 of the engaging element connecting body 13 to the object 2 is completed through repeated needle entry at the aforementioned needle entry points a1 to a6, the sewing machine motor, needle swing motor, and conveyance motor 42 are stopped. action. Next, the user of the sewing machine rotates the connection screw 454 to release the connection state between the restriction bracket 452 and the fixed plate 453, moves the base plate 45 to the right, and retracts the conveyance gear 41 to the right of the needle entry position. Thereby, the object to be sewn 2 and the engagement element connecting body 13 can be detached from the needle plate 24 . Furthermore, when only one of the engaging element connecting bodies 13 of the sliding slide fastener 10 of the sliding slide fastener product 1 is sewn, the other engaging element connecting body 13 is also sewn. At this time, the other meshing element connecting body 13 is installed in the feed groove 243 of the needle plate 24. When sewing one of the meshing element connecting bodies 13, the direction of the object to be sewn 2 is reversed. is installed, and sewing of the meshing element coupling body 13 is performed in the same manner as described above.

In addition, as mentioned above, the specific numerical data of the needle swing amount of the needle swing motor and the amount of forward movement caused by the conveyance motor 42 for needle drop at each needle drop point a1 to a6 are stored in the data memory in advance. . In addition, for sewing at each needle entry point in Figures 6 to 10, the needle swing amount of the needle swing motor for performing needle entry at each needle entry point is also prepared in the data memory. , the specific numerical data of the amount of forward movement caused by the conveyance motor 42 can be used to perform sewing by the zigzag sewing machine 100 .

In addition, as shown in FIG. 19, a pneumatic cylinder 47 may be provided in the sewing machine base 21; this pneumatic cylinder 47 is used to move the base plate 45 along the X-axis direction to perform needle dropping away from the conveyance gear 41. The actuator moves the position in the direction. The pneumatic cylinder 47 is installed on the sewing machine base 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 base plate 45 . This allows the base plate 45 to move between a predetermined position during sewing and a retracted position in which the conveyance gear 41 is sufficiently separated from the meshing element coupling body 13 . The aforementioned pneumatic cylinder 47 is a solenoid valve that controls the forward and backward movement of the piston rod through the control device of the zigzag sewing machine 100. Specifically, the following control is performed: after the object to be sewn 2 and the meshing element coupling 13 are installed and the origin search of the conveyance motor 42 is completed, the base plate 45 is moved to the position when sewing starts or before sewing starts. The predetermined position during sewing is to move the base plate 45 to the retracted position after sewing is completed.

[Technical effects of the first embodiment] In the aforementioned sliding zipper product 1, in the example shown in Figure 2, the head falling needle point a1 on the head 112 side of the engaging element 11 of the rope-shaped body 12 is formed by sewing, and the needle point a1 on the side of the engaging element 11 of the rope-shaped body 12 is formed by sewing. The end edge of the object 2 to be sewn 2 of the body 12 on the end edge portion 2a side falls into the needle points a2 to a6. In addition, the edge drop needle points a2 and a6 are set in the overlapping portion 2b of the object to be sewn 2, and are one-half w/2 larger than the overlapping width w of the overlapping portion 2b in the X-axis direction. In the range closer to the edge portion front end 2aa side, there are two locations, one end and the other end, of the region R2 which is the range inside the width of the leg portion 111 of the meshing element 11 in the Y-axis direction. Furthermore, sewing is performed so that the upper thread U and the lower thread D of the seam t1 span from the head falling needle point a1 to the end edge falling needle point a2, and the head falling spanning from the end edge falling needle point a6 to the adjacent meshing element 11 The upper line U and the lower line D of the seam t6 of the needle point a1 (the head of the needle point a11 in Figure 2) respectively span the side surfaces 116 and 117 on both sides of the leg 111 of the meshing element 11 in the Y-axis direction.

Thereby, the upper thread U and the lower thread D of the seams t1 and t6 come into contact with the corners of the legs 111 of the meshing element 11 on the object 2 side, so the meshing element 11 can be held in a manner that it is securely wrapped around it. Therefore, the movement of the meshing element 11 along the Y-axis direction, the swing of the head 112 of the meshing element 11 along the Y-axis direction, the swing of the head 112 of the meshing element 11 around the Y-axis, etc. can be reduced and suppressed. Therefore, the slide fastener 10 can be sewn satisfactorily, and the slide fastener product 1 can perform a smooth connection or separation operation by the slider 14 .

Furthermore, in the case of the sliding zipper products 1A and 1C shown in the examples of Figures 8 and 9, the meshing element connection body is also connected by end edge drop pin points including the aforementioned edge drop pin points a2 and a6. 13 is sewn to the object to be sewn 2, so similar to the example in Figure 2, the movement of the engaging element 11 along the Y-axis direction, the swing of the head 112 of the engaging element 11 along the Y-axis direction, and the engagement can be reduced and suppressed The head 112 of the element 11 swings around the Y-axis, etc., so that the sliding zipper 10 can be sewn well, and the sliding zipper product 1 can perform a smooth connecting or disconnecting operation through the slider 14 .

In addition, the edge drop needle points a3 to a5 are provided in the region R1 of the overlapping portion 2b of the object to be sewn 2 and further away from the meshing element 11 than the edge drop needle points a2 and a6. The upper thread U and the lower thread D as the sewing threads of the seams t2 to t5 formed by the edge falling needle points a3 to a5 can maintain the close contact between the fabrics of the object to be sewn 2 overlapped in the overlapping portion 2b. Therefore, it is possible to suppress deflection and deformation of the overlapping portion 2b. Therefore, the movement of the meshing element 11 along the Y-axis direction, the swinging of the head 112 of the meshing element 11 along the Y-axis direction, the swinging of the head 112 of the meshing element 11 around the Y-axis, and the like can be reduced and suppressed. In addition, along with this, sliding the slide fastener product 1 enables smoother connecting or disconnecting operations by the slider 14 . In addition, the edge drop needle points a3 to a5 can also be provided at a position further away from the meshing element 11 than the region R1 of the overlapping portion 2b of the object to be sewn 2 . At this time, although the knots of the upper thread U and the lower thread D cannot directly maintain the close contact between the fabrics of the object to be sewn 2 that overlap in the overlapping portion 2b, the seams t2 and t5 will press the objects to be sewn that overlap in the overlapping portion 2b. Therefore, the overlapping portion 2b can be prevented from being bent or deformed.

In particular, each of the seams t1 to t7 is formed by a lock stitch seam. Therefore, by adjusting the yarn tension, a stable knot can be easily formed, thereby reducing and inhibiting the movement of the meshing element 11 along the Y-axis direction. , the head 112 of the meshing element 11 swings along the Y-axis direction, and the head 112 of the meshing element 11 swings around the Y-axis, etc. Furthermore, by sliding the zipper product 1, the slider 14 can perform a smoother connecting or disconnecting operation.

In addition, in the aforementioned zigzag sewing machine 100, the zipper conveying mechanism 40 is provided with: a conveying gear 41 having teeth that mesh with the meshing element 11 of the meshing element coupling body 13; and a conveying motor 42 that provides a rotational motion to the conveying gear 41. ; And the needle plate 24 guides the meshing element connection 13 in the same direction as the feed direction of the object to be sewn 2. Thereby, the needle swing of the sewing needle 26 for positioning the aforementioned needle entry points a1 to a6, the conveyance of the work to be sewn 2, and the feeding of the meshing element connecting body 13 can be properly performed. In particular, although it is difficult for conventional sewing machines to convey continuous concavities and convexities that connect a plurality of meshing elements 11 along the conveyance direction like the meshing element coupling 13, the zigzag sewing machine 100 can mesh the teeth of the conveying gear 41 with the meshing elements. The connecting body 13 is conveyed in such a manner that it continuously engages the heads 112 of the meshing elements 11, so the meshing element connecting body 13 can be arbitrarily conveyed to the target position with good accuracy. Therefore, the needle insertion points a1 to a6 can be accurately performed, and the engagement element connecting body 13 can be properly sewn to the object 2 to be sewn.

In addition, the needle plate 24 as a slide fastener guide has a feed groove 243 that guides the plurality of meshing elements 11 of the meshing element connecting body 13 in the same direction as the feeding direction of the object to be sewn 2, so in When the head 112 of the meshing element 11 meshes with the teeth of the conveyance gear 41, the meshing element connecting body 13 can be stably maintained in a manner that does not deviate from the feeding direction, and the needle entry point can be positioned with better accuracy. A1~a6 are used for needle insertion.

In addition, the zigzag sewing machine 100 is equipped with the zipper presser 49 that prevents the meshing element coupling 13 conveyed by the conveyance gear 41 from being separated upward. Therefore, when the head 112 of the meshing element 11 meshes with the teeth of the conveyance gear 41, The meshing element connecting body 13 can also be stably maintained so as not to be separated upward, and the needle can be inserted into the needle insertion points a1 to a6 with better accuracy.

In addition, since the conveyance gear 41 is supported movably in a direction away from the needle entry position by the support arm 44, the meshing element coupling 13 can be easily removed from the needle plate 24, thereby improving workability. promote.

In addition, the conveyance gear 41 is supported by the base plate 45 together with the conveyance motor 42 and the transmission mechanism 48, and the conveyance gear 41 is supported by the sliding guide 46 so as to be movable in a direction away from the needle drop position. Therefore, the meshing element connecting body 13 can be easily detached from the needle plate 24, thereby improving workability. Furthermore, since the conveyance gear 41 moves together with the conveyance motor 42 and the transmission mechanism 48, it is possible to suppress the origin displacement of the conveyance gear 41 during movement, and when returning to the sewing operation after being far away from the needle entry position, it is possible to omit It can quickly perform sewing by searching the origin, etc., thereby improving the work efficiency.

In addition, when the base plate 45 of the conveyance gear 41 is moved by the pneumatic cylinder 47 as the actuator, manual work is not required, and the work load can be reduced, the work can be accelerated, and the like.

In addition, the zigzag sewing machine 100 is equipped with a control device; the control device performs the following control: every time the needle is dropped, the conveyance motor 42 is driven at a predetermined timing based on detection of the encoder of the sewing machine motor, so that the meshing element coupling body 13Move by the amount of movement in the feed direction to the next needle entry point. Thereby, with respect to the conveyance direction of the engaging element connecting body 13, the engaging element connecting body 13 can be conveyed to the needle entry point that is the target for sewing the object 2 to be sewn, and proper sewing can be easily performed. sewing.

In addition, the zigzag sewing machine 100 is equipped with a control device; the control device performs the following control: every time the needle is dropped, the needle swing motor is driven at a predetermined timing based on the detection of the encoder of the sewing machine motor, so that the sewing needle is lowered. The needle is moved by the amount of needle movement up to the needle entry point. Thereby, with respect to the conveyance direction orthogonal to the meshing element coupling body 13, the sewing needle can be moved to the needle entry point that is the target for sewing the object 2, and proper sewing can be performed more easily. Sewing.

[Other examples of zipper transport mechanism (1)] In the aforementioned zipper conveying mechanism 40, the case where the supporting shaft 411 supporting the conveying gear 41 is arranged parallel to the Z-axis direction is exemplified, but the direction of the supporting shaft 411 is not limited to this. For example, like the zipper conveying mechanism 40A shown in Figures 20 and 21, the rotation center of the conveying gear 41A can be directed in the horizontal direction, such as the X-axis direction; the conveying gear 41A has a meshing element on the outer periphery. 11 teeth, and the pitch width is consistent with the pitch of each meshing element 11 of the meshing element connecting body 13 . In addition, the sewing needle 26 is omitted from illustration in Fig. 21 .

This zipper conveyance mechanism 40A is equipped with: a support shaft 411A, which supports the conveyance gear 41A and is parallel to the X-axis direction; a conveyance motor 42A, which is arranged with the output shaft facing the X-axis direction; and a driving pulley 481A, which is moved by the conveyance motor 42A. Rotation; the driven pulley 483A is fixedly installed on the pivot shaft 411A; and the timing belt 484A is spanned from the driving pulley 481A to the driven pulley 483A. At this time, the conveyance gear 41A is connected to the lower side of the needle plate 24 and is disposed so that the upper tooth tip of the conveyance gear 41A passes through the opening formed in the needle plate 24 and meshes with the mesh in the feed groove 243 from the lower side. The head portion 112 of the element connecting body 13 engages with the element 11 .

In this way, even if the slide fastener transport mechanism 40A is configured to rotate the transport gear 41A around the horizontal axis parallel to the X-axis direction, the meshing element coupling body 13 can be satisfactorily transported like the slide fastener transport mechanism 40 .

Moreover, as for the slide fastener conveyance mechanism 40A which rotates the conveyance gear 41A about the X-axis (around the horizontal axis) in this way, as shown in FIG. 22 and FIG. 23, the conveyance gear 41A is arrange|positioned on the upper side of the needle plate 24, Alternatively, the lower tooth tip of the conveyance gear 41A may be meshed with the head 112 of the meshing element 11 of the meshing element coupling body 13 in the feed groove 243 from above. In addition, at this time, the structure for transmitting power such as the support shaft 411A, the transport motor 42A, the driving pulley 481A, the driven pulley 483A, the timing belt 484A, etc. is preferably disposed above the needle plate 24 .

[Other examples of zipper transport mechanism (2)] In addition, in the aforementioned zipper conveyance mechanism 40, the case where the support shaft 411 supporting the conveyance gear 41 is arranged parallel to the Z-axis direction is illustrated. However, the direction of the support shaft 411 may be inclined. For example, like the zipper conveyance mechanism 40B shown in FIG. 24, the rotation center of the conveyance gear 41B and the support shaft 411B may be inclined diagonally upward to the left with respect to the Z-axis direction; The teeth of the meshing elements 11 and the pitch width are consistent with the pitch of each meshing element 11 of the meshing element connecting body 13 . In addition, the illustration of the sewing needle 26 is also omitted in Fig. 24 .

The zipper transport mechanism 40B is equipped with a spindle 411B; the transport motor 42B is arranged with the output shaft parallel to the spindle 411B; the driving pulley 481B is rotated by the transport motor 42B; the driven pulley 483B is fixedly installed on the support. The shaft 411B; and the timing belt 484B are spanned from the driving pulley 481B to the driven pulley 483B. At this time, the conveyance gear 41B is attached to the upper side of the needle plate 24 and is arranged so that the left tooth tip of the conveyance gear 41B meshes with the meshing element coupling 13 in the feed groove 243 of the needle plate 24 from the right oblique upper side. Head 112 of element 11 .

In this way, even if the slide fastener transportation mechanism 40B is configured to rotate the transportation gear 41B around an axis inclined with respect to the Z-axis direction, the meshing element coupling body 13 can be transported satisfactorily like the slide fastener transportation mechanism 40 .

In addition, the zipper conveyance mechanisms 40A and 40B support the conveyance gears 41A and 41B so as to be movable in a direction away from the meshing element coupling body 13 (for example, to the right), similarly to the zipper conveyance mechanism 40, so that the conveyance gears 41A and 41B can move between the conveyance gears 41A and 41B. 41B may be moved between a predetermined position (a position engaged with the meshing element 11) and a retracted position (a position where the transport gear 41 is sufficiently far away from the meshing element coupling body 13). At this time, it is preferable that the conveyance motors 42A and 42B and each component transmitting the rotational motion to the conveyance gears 41A and 41B are supported so as to be movable in the same direction together with the conveyance gears 41A and 41B. In addition, the zipper conveying mechanisms 40A and 40B are preferably configured to move between predetermined positions and retracted positions of the conveying gears 41A and 41B by an actuator such as the pneumatic cylinder 47 as shown in the example of FIG. 19 .

[Second Embodiment] A second embodiment of the present invention will be described. In the aforementioned zipper conveying mechanism 40, the meshing element connecting body 13 is conveyed by one conveying gear 41, but the meshing element connecting body 13 may be conveyed by two or more conveying gears. Hereinafter, a zigzag sewing machine 100 as a second embodiment of the present invention will be described. This zigzag sewing machine 100 includes a zipper conveyance mechanism 40C in which conveyance gears 415C and 416C are respectively arranged on the front and rear sides with a needle hole 242 interposed therebetween.

In addition, the same components of the zipper conveyance mechanism 40C as those of the aforementioned zipper conveyance mechanism 40 are given the same reference numerals, and repeated explanations are omitted. Only the components of the zigzag sewing machine 100 that are different from those already explained will be described. The same components will be given the same reference numerals and repeated descriptions will be omitted. Figure 25 is a top view of the zipper conveying mechanism 40C, Figure 26 is a rear view, Figure 27 is a perspective view of a selected part thereof, and Figure 28 is a top view.

As shown in the figure, the zipper conveyance mechanism 40C is equipped with two conveyance gears 415C and 416C, which are provided with teeth that mesh with the meshing element 11 of the meshing element coupling body 13; and a conveyance motor 42C is provided with each conveyance gear 415C, 416C. The rotational movement; the support mechanism 43C supports the conveyance gears 415C and 416C; and the transmission mechanism 48C transmits the rotational force from the conveyance motor 42C to the conveyance gears 415C and 416C. In addition, this slide fastener conveyance mechanism 40C also includes a slide fastener pusher having the same structure as the slide fastener pusher 49 described above, but the illustration is omitted.

[Additional instructions for sliding zippers] Here, the slide fastener 10C will be demonstrated using FIG. 29 and FIG. 30. This slide fastener 10C is provided with a pair of meshing element connecting bodies 131 and 132 which can be connected and separated. The pair of meshing element connecting bodies 131 and 132 constituting the sliding slide fastener 10C is the same as the meshing element connecting body 13 in the part where the meshing element 11 is connected via the rope-shaped body 12. However, its end structure is different. One of the meshing element connecting bodies 131 is, as shown in Figure 29, provided with a pin 15 and an upper stopper 17 respectively provided at one end and the other end of the rope-shaped body 12 connecting a plurality of meshing elements 11. . In addition, the other engaging element connecting body 132 is, as shown in FIG. 30 , provided with a box pin 16 provided at one end of the rope-shaped body 12 connecting a plurality of engaging elements 11 and provided above the other end. Stop 17. In addition, Figures 29 and 30 show the number of the engaging elements 11 of each of the engaging element couplings 131 and 132 being smaller than the actual number.

In the meshing element connection body 131 , the latch 15 and the upper stopper 17 function as stoppers to prevent the slider 14 from falling off from the end of the rope-shaped body 12 . In addition, the box pin 16 of the meshing element coupling body 132 is in a state where the slider 14 is located at the end of the meshing element coupling body 131 on the latch 15 side. By inserting the slider 14, the latch pin 15 and the box pin 16 Shapes that match each other. By moving the slider 14 toward the upper stopper 17 side in this mating state, the meshing elements 11 of the meshing element connecting body 131 and the meshing element connecting body 132 can be connected to each other.

The latch pin 15 and the box pin 16 (sometimes collectively referred to as "opening parts") each have a thin plate-shaped sewing portion 151 for overlapping sewing on the back side of the end edge portion 2a of the object to be sewn 2. 161. A plurality of threading holes 152 and 162 along the length direction of the rope-shaped body 12 are formed in the sewing portions 151 and 161. Furthermore, when the meshing element connecting body 131 is sewn to the object to be sewn 2, the needle is inserted into the plurality of threading holes 152 of the plug 15. In addition, when sewing the meshing element connecting body 132 to the object to be sewn 2, the needle is inserted into the plurality of threading holes 162 of the box pin 16.

In addition, the upper stopper 17 is almost the same size as the engaging element 11 in the front, rear, left and right directions, but does not have a narrowed head 112 like the engaging element 11 . In addition, the upper stopper 17 is thicker than the entire engagement element 11, thereby forming a structure to hold the slider 14 so as not to fall off.

[Configuration of transport gear] The aforementioned meshing element connecting bodies 131 and 132 are formed so that the slider 14 can pass through when the pair of meshing element connecting bodies 131 and 132 are connected. The latch 15 and the box pin 16 are formed to have a left and right width wider than the meshing element 11. Small or longer shape than the engaging element 11 in the front-to-back direction. When the meshing element couplings 131 and 132 having the latch 15 or the box pin 16 at one end are conveyed by the zipper conveying mechanism 40 having only one conveying gear 41 , when the latch 15 or the box pin 16 passes through the conveying gear 41 If the meshing state cannot be established, there is a risk that transportation cannot be carried out with good accuracy.

On the other hand, the zipper conveyance mechanism 40C is provided with a front conveyance gear 415C that meshes with one of the meshing element couplings 131 and 132 or the heads of a plurality of meshing elements 11 on the front side of the needle drop position (needle hole 242). 112; and the rear conveyance gear 416C, which is engaged with the head 112 of one or a plurality of the meshing elements 11 of the meshing element connecting bodies 131 and 132 at the rear side of the needle drop position (needle hole 242). In this way, in the case where at least two conveyance gears 415C and 416C are provided across the needle entry position, when the latch 15 or the box pin 16 passes through one of the conveyance gears 415C or 416C, the other conveyance gear 416C or 415C can also pass through. Since it meshes with the meshing element 11, the meshing element coupling bodies 131 and 132 can be conveyed with good precision. In addition, reverse feed such as reverse stitching can also be performed satisfactorily.

In addition, the conveyance gears 415C and 416C are spur gears with the same pitch as the meshing elements 11 of the meshing element couplings 131 and 132, and the pitch diameters of the conveyance gears 415C and 416C are the same. Arrange in front-to-back direction. Furthermore, the conveyance gears 415C and 416C are arranged so that the center distance is narrower than the lengths of the latch 15 and the box pin 16 in the front-rear direction. Moreover, when the length of one of the latch pin 15 and the box pin 16 in the front-rear direction is shorter than the other, the conveyance gears 415C and 416C are arranged so that the center distance in the front-rear direction is narrower than the length of the shorter one.

[support mechanism] As shown in Figures 25 and 26, the support mechanism 43C is provided with: upper and lower base plates 451C and 452C that support the conveyance gears 415C and 416C, the transmission mechanism 48C and the conveyance motor 42C; and the base plates 451C and 452C can be The sliding guide 46C is supported to slide along the X-axis direction.

The upper and lower base plates 451C and 452C are flat plates along the X-Y plane, and are arranged on the sewing machine base 21 through the sliding guide 46C in a position between the needle drop position and the upright trunk 22 . The base plates 451C and 452C are connected in a close and facing state, and between them, the driving pulley 481C, the driven pulleys 488C and 489C, and the tension roller 485C of the transmission mechanism 48C are rotatable around the Z-axis. way to support. The upper base plate 451C fixedly supports the conveyance motor 42C above the right end, and the lower base plate 452C rotatably supports the front and rear conveyance gears 415C and 416C under the left end.

The sliding guide 46C includes a movable block 461C fixedly connected to the lower base plate 452C, and a slide rail 462C installed on the sewing machine base 21 along the X-axis direction, and can move up and down through the movable block 461C. The base plates 451C and 452C slide along the X-axis direction.

In addition, the right end portion of the upper base plate 451C is equipped with the same restriction bracket 452 (see FIG. 14) as described above for restricting the sliding movement of the upper and lower base plates 451C and 452C in the X-axis direction. Limiting bracket, however illustration omitted. Furthermore, by using this restriction bracket, the tooth tips of the conveyance gears 415C and 416C can be adjusted to positions that appropriately mesh with the heads 112 of the meshing elements 11 of the meshing element couplings 131 or 132 being conveyed. In addition, one end of a pull spring 443C that pulls the upper and lower base plates 451C and 452C toward the left is connected to the lower base plate 452C, so that the tooth tips of the conveyance gears 415C and 416C can be properly held. The position of the engagement element 11 is engaged. Furthermore, by moving the upper and lower base plates 451C and 452C to the right against the pull spring 443C, it is possible to easily perform maintenance on the zipper transport mechanism 40C or remove the engagement element coupling 131 or 132 from the needle plate 24 Homework.

Furthermore, an origin sensor 413C for detecting the origin position of the rotation of the conveyance gears 415C and 416C is provided (see FIG. 31 ), so that the origin of the conveyance gears 415C and 416C can be detected. point location.

[Communication agency] The conveyance motor 42C is a stepping motor, and can arbitrarily control the feed amount of the meshing element connection 131 or 132 caused by the conveyance gears 415C and 416C through the transmission mechanism 48C. This conveyance motor 42C is attached to the upper base plate 451C with the output shaft facing downward as shown in Fig. 26 .

The transmission mechanism 48C, as shown in Figures 25 to 28, is equipped with: a driving pulley 481C, which is fixedly installed on the output shaft of the transportation motor 42C; transmission gears 482C and 483C, which are meshed with the transportation gears 415C and 416C respectively; The driven pulleys 488C and 489C are coaxially connected to the supporting shafts 486C and 487C of the transmission gears 482C and 483C; the timing belt 484C is spanned from the driving pulley 481C to the driven pulleys 488C and 489C; and the tension roller 485C is connected to the timing belt. 484C imparts tension.

The driving pulley 481C, the driven pulleys 488C and 489C and the tension roller 485C are arranged between the upper and lower base plates 451C and 452C, and the transmission gears 482C and 483C and the transport gears 415C and 416C are arranged on the lower side of the lower base plate 452C. .

As described above, the transmission mechanism 48C applies rotational force to the conveyance gears 415C and 416C through the transmission gears 482C and 483C from the driven pulleys 488C and 489C. Thereby, there is no need to dispose the driven pulleys 488C, 489C, etc. above the conveyance gears 415C and 416C, so the upper part can be freed, and the conveyance gears 415C and 416C with a smaller outer diameter than the aforementioned conveyance gear 41 can be arranged at the bottom. Narrow space around needle location.

[For the use of other sewing machines] The aforementioned zipper conveying mechanism 40C is an example in which two conveying gears 415C and 416C are provided around the Z-axis. However, like the aforementioned zipper conveying mechanism 40A (see FIG. 20), on the upper or lower side of the needle plate, It is also possible to provide a transport gear that rotates around the X-axis before and after the needle drop position. At this time, it is preferable that rotation is given to each conveyance gear simultaneously from the conveyance motor through the transmission mechanism. In addition, like the aforementioned zipper conveyance mechanism 40B (see FIG. 24 ), a conveyance gear may be provided each before and after the needle entry position so that the rotation center is inclined diagonally upward to the left with respect to the Z-axis direction. At this time, it is also preferable to configure the conveyance motor to impart rotation to each conveyance gear simultaneously through the transmission mechanism.

[Sewing machine control system] The control system of the sewing machine 100 equipped with the aforementioned zipper conveying mechanism 40C is shown in Fig. 31. The sewing machine 100 equipped with the slide fastener conveying mechanism 40C is suitable for sewing the sliding slide fastener 10C having the engagement element couplings 131 and 132 shown in FIGS. 29 and 30 as described above. Therefore, here, the control system of the sewing machine 100 equipped with the slide fastener conveying mechanism 40C will be described first, and the sewing control system of the sliding slide fastener 10C performed by the sewing machine 100 will be described later. Moreover, the slide fastener 10C can also be sewn by the slide fastener 40, 40A, and 40B.

As shown in Figure 31, the control device 90 of the sewing machine 100 is connected to the sewing machine motor 105, the needle swing motor 106, the feed adjustment motor 107, the conveyance motor 42C, and Cloth press lifting motor 253. Moreover, the origin sensor 413C of the conveyance motor 42C and the setting input part 93 are connected to the control device 90 through respective interfaces 413Ca and 93a. In addition, an encoder 108 for detecting the rotation angle of the upper shaft is connected to the control device 90 through the interface 108a. As shown in FIG. 32, the setting input unit 93 has a display screen 931 in the center and a plurality of input switches 932 to 941 around it. Various parameters for performing sewing control of the slide slide fastener 10C and the like are input to this setting input unit 93 . These are described below.

Furthermore, the control device 90 is equipped with: a CPU 91 that performs predetermined control of the sewing machine motor 105, needle swing motor 106, feed adjustment motor 107, conveyance motor 42C, and presser lifting motor 253; and a memory 92 that writes Enter the control program and setting data used to execute the control.

[Setting parameters for sewing control of sliding zipper by sewing machine] Fig. 33 is an explanatory diagram showing setting parameters when sewing the engagement element coupling body 131 of the slide fastener 10C. The setting parameters include setting parameters for the needle drop position (setting parameters for controlling the needle swing motor 106 and the feed adjustment motor 107), and setting parameters for the feed of the meshing element coupling 131 of the sliding slide fastener 10C (controlling the setting parameters for the needle entry motor 106 and the feed adjustment motor 107). Setting parameters of conveying motor 42C). First, the setting parameters regarding the needle entry position will be explained.

Fig. 34 is an explanatory diagram showing the needle entry positions of the object to be sewn 2 and the meshing element connecting body 131. In addition, in FIG. 34, for the purpose of explanation, the number of the engaging elements 11 of the engaging element coupling body 131 is shown to be smaller than the actual number. As shown in FIGS. 33 and 34 , the meshing element connecting body 131 is sewn by sewing the needle in a predetermined sewing pattern for each part of the meshing element connecting body 131 . That is, the meshing element connecting body 131 performs sewing by sequentially executing a plurality of types of sewing patterns selected in advance.

[Examples of various sewing forms] Here, a part of the sewing form is illustrated in Figures 35A to 36D. One grid in the square in each picture corresponds to the needle placement position, and the numbers in each grid indicate the order in which the needle placement is performed. In addition, the symbol H in the figure is the reference position in the left and right direction, and when it is taken as 0, the right side is represented by a positive value, and the left side is represented by a negative value.

Form No. 1 shown in Figure 35A is a sewing form called a blind stitch among so-called zigzag stitches, and forms a trapezoidal slit when viewed from above, which is suitable for needle drop around the engaging element 11 situation. When a plurality of meshing elements 11 are arranged like the meshing element coupling body 131 and each meshing element 11 is blind-stitched, the operation control according to the pattern No. 1 is repeatedly executed for the number of meshing elements 11 .

The sewing pattern of each number is determined by the following matters: the number of needle entry positions, the order of each needle entry position, the left and right position coordinates of each needle entry position (α, β, γ, δ in each figure), the The feed amount of the object to be sewn 2 at each needle entry position. The needle entry parameters that determine the sewing form can be set arbitrarily using the setting input unit 93 described above. During sewing, the needle swing motor 106 is controlled so that the left and right position coordinates match each needle drop position in the sequence of needle drop positions determined by the sewing pattern, and the feed adjustment motor 107 is controlled so that the feed amount matches each needle drop position. Location.

Pattern No. 2 shown in Figure 35B is a so-called zigzag sewing pattern called 3-point zigzag. Every three points swing to the left and right to form a zig-zag seam. This sewing The shape is also suitable for needle drop around the engaging element 11 . When a plurality of meshing elements 11 are arranged and each meshing element 11 is sewn with a three-point sawtooth, the operation control according to the pattern No. 2 is repeatedly executed for the number of meshing elements 11 .

Form No. 3 shown in Figure 35C is a sewing form called bar tacking, and is formed in a seam that reciprocates in a straight line in the left and right direction. This sewing form is suitable for preventing the seam from coming off by repeating it several times, or for fastening and fixing the sewn items.

Form No. 4 shown in D in Figure 35 is a sewing form called lock stitching, in which straight seams are formed at regular intervals toward the rear while maintaining a constant position in the left-right direction. Form No. 5 shown in Figure 36A is a sewing form called lock stitching (reverse stitching), in which straight seams are formed at regular intervals toward the front while maintaining a fixed position in the left and right directions.

Pattern No. 6 shown in Figure 36B is a so-called zigzag sewing pattern called a two-point zigzag. Every two points swing to the left and right to form a zig-zag seam toward the rear. Pattern No. 7 shown in Figure 36C is a sewing pattern called a two-point zigzag (reverse stitch) in the so-called zigzag stitch. Every two points swing to the left and right to form a zigzag (zig-zag) shape toward the front. Seam.

Form No. 8 shown in Figure 36 D is a lock stitch sewing form. Although the shape is the same as Form No. 4, linear seams are formed at shorter intervals.

The parameters of the sewing mode described above can be set using the setting input unit 93 shown in Fig. 32 . The setting input unit 93 can change the allocation of functions performed by the surrounding input switches 932 to 941 by performing a switching operation to switch the display image showing the input content displayed on the display screen 931 . Furthermore, Fig. 32 shows the display state of the display image for inputting the needle entry parameters of the sewing form.

The input switches 932 and 933 of the setting input unit 93 in Figure 32 are used to input the increase or decrease of the needle entry position in the sewing mode. The input switches 934 and 935 are used to input the increase or decrease of the position coordinates to the left and right of the selected needle entry position. The input switches 936 and 937 are used to input the increase or decrease in the feed amount of the object to be sewn 2 at the selected needle entry position. Input switches 938 and 939 are used to input the addition and deletion of needle entry positions. The input switch 940 is used to input that the sewing state has reached the last stitch. The input switch 941 is used to determine the contents set by the input operations of the input switches 932 to 940 as the needle entry parameters of the sewing form.

The data of the sewing form that determines the needle entry parameters are registered in the memory 92 . The sewing form of each number mentioned above is an example of the registered person set in advance by the setting input part 93 of FIG. 32 mentioned above. For example, the sewing pattern data that determines the aforementioned parameters for the needle entry points a1 to a6 of the seam shown in Figure 2 is also registered in the memory 92 and is applied to each engaging element 11 of the sliding zipper 10C. It can also be sewed while sewing. Similarly, the needle entry points of a1, a3 to a5 of the seam shown in Figure 7 and the needle entry points of a1, a2, a6 of the seam shown in Figure 8 determine the sewing pattern of the aforementioned parameters. The data is also registered in the memory 92 and can be used for sewing of each engagement element 11 of the slide fastener 10C.

[Concrete example of setting parameters for needle entry position] The content of the setting parameters of the needle entry position for performing sewing of the meshing element coupling body 131 in Fig. 34 will be explained based on the left half of Fig. 33. Ps in Figure 34 represents the needle entry position as the sewing start position, and Pe represents the needle entry position as the sewing end position. In Fig. 33, "sewing machine steps" indicate the sequence of sewing modes to be executed. "Pattern No." is a pattern number indicating the sewing pattern executed in each "sewing machine step". "Number of sewing machine stitches" indicates which stitch the selected sewing pattern is executed to. For example, when the number of stitches of the sewing machine exceeds the number of stitches determined by the selected sewing pattern, for example, is an integer multiple, the sewing pattern of the sewing pattern is repeated an integer number of times.

In the sewing machine step 0 in Figure 33, mode No. 7 is selected, and the number of needles of the sewing machine is set to 0. This sewing machine step 0 sets the positioning operation of the sewing needle with respect to the sewing start position Ps in Figure 34. That is, in accordance with the setting content of step 0 of the sewing machine, although the needle is moved so that the sewing needle is positioned at the needle entry position of the first needle of Pattern No. 7, the needle entry is not performed because the needle number of the sewing machine is 0.

In the sewing machine step 1 in Figure 33, mode No. 7 is selected, and the number of stitches of the sewing machine is set to 5. Step 1 of this sewing machine corresponds to arrow P1 in Figure 34. The end of the rope-shaped body 12 protruding from the front end of the meshing element connecting body 131 executes a 2-point zigzag according to the needle drop parameters of form No. 7. Backstitch in 5 stitches.

In the sewing machine step 2 in Figure 33, mode No. 6 is selected, and the number of needles of the sewing machine is set to 6. Step 2 of this sewing machine corresponds to arrow P2 in Figure 34. The end of the rope-shaped body 12 protruding from the front end of the meshing element connecting body 131 performs a 2-point zigzag according to the needle drop parameters of form No. 6. 6 stitches of backstitch.

In the sewing machine step 3 in Figure 33, mode No. 8 is selected, and the number of stitches of the sewing machine is set to 3. Step 3 of this sewing machine corresponds to arrow P3 in Figure 34, and performs three stitches of lock stitching along the end of the upper stopper 17 on the left side according to the needle drop parameters of form No. 8.

In step 4 of the sewing machine in Figure 33, mode No. 3 is selected, and the number of stitches of the sewing machine is set to 3. Step 4 of this sewing machine corresponds to arrow P4 in Figure 34. It spans the left and right sides of the rope-shaped body 12 between the upper stopper 17 and the adjacent meshing element 11, and is executed according to the needle drop parameters of form No. 3. 3 stitches of bartack.

In step 5 of the sewing machine in Figure 33, mode No. 1 is selected, and the number of stitches of the sewing machine is set to nx4 (n is the number of meshing elements 11 of the meshing element connection 131, for example, n=3 in the example of Figure 34) . Step 5 of this sewing machine corresponds to arrow P5 in Figure 34. From the upper side of the meshing element 11 to the left, according to the needle drop parameters of form No. 1, a zigzag seam formed by blind stitching including 4 needles is executed. And, for all the engaging elements 11, the zigzag seam formed by the same blind seam is repeatedly performed.

In step 6 of the sewing machine in Figure 33, mode No. 3 is selected, and the number of needles of the sewing machine is set to 4. Step 6 of this sewing machine corresponds to the arrow P6 in Figure 34. It is executed across the left and right sides of the rope-shaped body 12 between the engaging element 11 adjacent to the latch 15 and the latch 15 according to the needle drop parameters of form No. 3. 4 stitches of bartack.

In step 7 of the sewing machine in Figure 33, mode No. 4 is selected, and the number of stitches of the sewing machine is set to 7. Step 7 of this sewing machine corresponds to arrow P7 in Figure 34. From the front end of the sewing part 151 of the latch 15 toward the rear end, through each threading hole 152, 7 stitches are executed according to the needle drop parameters of pattern No. 4. of seams.

In the sewing machine step 8 in Figure 33, mode No. 5 is selected, and the number of stitches of the sewing machine is set to 6. Step 8 of this sewing machine corresponds to arrow P8 in Figure 34. From the rear end of the sewing portion 151 of the latch 15 toward the front end, through each threading hole 152, six stitches are executed according to the needle drop parameters of pattern No. 5. The backstitch of the lockstitch.

In addition, the settings of the "sewing machine step", "form No.", and "number of sewing machine needles" as setting parameters for the needle entry position for sewing the meshing element coupling body 131 shown in the aforementioned Fig. 33 The content can also be set arbitrarily through the setting input unit 93. That is, the setting input unit 93 can switch the display image of the display screen 931 to the input image of the setting parameters regarding the needle entry position by performing a switching operation, and can set " "Sewing machine steps", "Form No.", "Sewing machine needle number". Furthermore, the setting contents of the setting parameters of the needle entry position are also registered in the memory 92 .

In addition, in the specific example of the setting parameters of the needle entry position, although the example is for sewing the meshing element coupling body 131, the setting can also be determined in the same manner when sewing the meshing element coupling body 132. parameters. That is, when the meshing element coupling body 132 is sewn, the box pin 16 is located at the front end and the upper stopper 17 is located at the rear end. Therefore, the setting parameters are set to: in the early stage of sewing, for the sewing of the box pin 16 The portion 161 performs backstitching and lockstitching of the lockstitch. In the final stage of sewing, tacking is performed on the upper stopper 17 and two points are performed on the end of the rope-shaped body 12 protruding from the rear end of the meshing element coupling body 132. As long as the above-mentioned circumstances are taken into account, the zigzag stitching and backstitching of the zigzag are made the same as those for sewing the meshing element coupling 131 .

[Setting parameters for the feed of the meshing element coupling] Next, the setting parameters regarding the feed of the engagement element coupling body 131 of the slide fastener 10C will be described. The right half of Fig. 33 shows the content of setting parameters for feeding of the meshing element coupling 131 for sewing the meshing element coupling 131 in Fig. 34. That is, the meshing element connecting body 131 is sewn by sewing in predetermined sewing patterns for each part of the meshing element connecting body 131 as described above. The device mode executes the feeding of the meshing element coupling body 131 by the zipper conveyance mechanism 40C.

[Examples of various device modes] Fig. 37 is a selection image of the device mode displayed on the display screen 931 of the setting input unit 93 when setting the setting parameters regarding the feed of the meshing element coupling body 131. These device modes are explained in order.

The device mode of the "zipper sewing plate" is similar to the above-mentioned sewing mode Mode No. 1 or Mode No. 2, and sets the feed amount and presser 25 suitable for sewing the plate around the meshing element 11 the height of. That is, the feed amount is set to be consistent with the feed amount of the workpiece per stitch of the sewing mode Pattern No. 1 or Pattern No. 2. Specifically, one quarter of the length of the pitch of each meshing element 11 in the meshing element connecting body 131 (the distance from the center of the meshing element 11 adjacent in the Y-axis direction to the center of the meshing element 11) is taken as one unit. The base feed amount, and set the magnification of the base feed amount in the device mode. In the sewing mode of Mode No. 1 or Mode No. 2, four needles are used to sew one meshing element 11. Therefore, in the device mode of "zipper sewing plate", four needles are set as the pitch of the meshing element 11. One-half the basic feed amount × 1. In addition, the height of the cloth pressing member 25 is set to a normal height so that the pressing force is normal.

The device mode of the "thread zigzag" is set like the above-mentioned sewing mode mode No. 6 or mode No. 7, and is set to be suitable for feeding when performing a two-point zigzag stitch on the end of the rope-shaped body 12. quantity. That is, set the feed amount consistent with the feed amount of the workpiece per stitch of sewing mode No. 6 or No. 7. In addition, the height of the cloth pressing member 25 is set to a slight pushing height so that the pressing pressure can be lower than usual. For example, when the feed amount of the two-point sawtooth of the rope-shaped body 12 is set to be equal to the standard feed amount, the standard feed amount × 1 is set in the device mode of "wire sawtooth".

The device mode of "upper stopper lock stitching" is similar to the above-mentioned sewing mode mode No. 8, and sets the feed amount suitable for performing lockstitching along the end of the upper stopper 17. That is, set the feed amount consistent with the feed amount of the workpiece per stitch of sewing mode No. 8. In addition, the height of the cloth pressing member 25 is set to a normal height so that the pressing force is normal. For example, when the feed amount of lock stitching along the end of the upper stopper 17 is set to be equal to the standard feed amount, the standard feed amount is set in the device mode of "upper stopper lock stitch". Amount × 1.

The device mode of "upper stopper tacking" is similar to the above-mentioned sewing mode mode No. 3, and sets the feed amount suitable for performing tacking between the upper stopper 17 and the meshing element 11. In addition, the height of the cloth pressing member 25 is set to a normal height so that the pressing force is normal. For example, when the tack feed amount is set to 0, it is set to 0 in the device mode of "upper stopper tack".

The device mode of "opener lock stitching" is like the above-mentioned sewing mode Mode No. 4 or Mode No. 5, setting the threading holes suitable for sewing parts 151 and 161 corresponding to the latch 15 or the box pin 16 The feed amount during lock stitching at intervals of 152 and 162. That is, set the feed amount consistent with the feed amount of the workpiece per stitch of sewing mode No. 4 or No. 5. In addition, the height of the cloth pressing member 25 is set to a slight pushing height so that the pressing pressure can be lower than usual. For example, when the interval between the threading holes 152 and 162 of the latch 15 or the box pin 16 is set to twice the standard feed amount, the standard feed amount × 2 is set in the device mode of "opener lock stitching".

The "opener sawtooth" device mode sets the feed amount suitable for performing the sawtooth stitching of the latch 15 or the box pin 16. In addition, the height of the cloth pressing member 25 is set to a slight pushing height so that the pressing pressure can be lower than usual. For example, when the interval when zigzagging the latch 15 or the box pin 16 is set to be equal to the standard feed amount, the standard feed amount × 1 is set in the device mode of "opener sawtooth".

The device mode of "opener bartack" is set to be suitable for bartacking between the latch 15 and the meshing element 11 or the box pin 16 and the meshing element 11, like the above-mentioned sewing mode mode No. 3. Feed amount. In addition, the height of the cloth pressing member 25 is set to a slight pushing height so that the pressing pressure can be lower than usual. For example, when the bartack feed amount is set to 0, it is set to 0 in the device mode of "opener bartack".

"Sewing completed" indicates the end of sewing, and the feed amount is set to 0.

The feed amount in each of the above-mentioned device modes can be set arbitrarily through the setting input unit 93 . That is, the setting input unit 93 can switch the display image of the display screen 931 to the input image of the device mode by performing a switching operation, and can set the "feed amount" and "pressure" using the surrounding input switches 932 to 941. Cloth piece (pressing pressure)". In addition, the size of the reference feed amount can also be set arbitrarily by inputting a specific numerical value. The setting content of the feed amount, the height of the cloth pressing member or the setting value of the standard feed amount in these device modes are also registered in the memory 92 .

[Concrete examples of setting parameters for the feed of the meshing element coupling] Referring to Fig. 34, the content of setting parameters for the feed of the meshing element coupling shown in Fig. 33 will be described. In Figure 33, the sewing machine steps 0 to 8 of setting parameters for the needle drop position respectively correspond to the device steps 1 to 9 of setting parameters for the feed of the meshing element coupling. In Figure 33, "installation steps" represent the sequence of installation steps to be executed. "Device mode" indicates the type and feed direction of the aforementioned device mode. "Number of continuous stitches" indicates the number of stitches that the selected device mode lasts.

In the installation step 1 of Figure 33, the installation mode of "zipper sewing disc" is selected, the feeding direction is set to the forward feeding direction (the direction in which the meshing element connecting body 131 is fed forward), and the number of needles of the sewing machine is set to 1. Step 1 of this device is to set the feed operation amount of the meshing element connecting body 131 during the positioning operation of the sewing needle with respect to the sewing start position Ps in Fig. 34.

In the installation step 2 of Figure 33, the installation mode of "thread sawtooth" is selected, the feed direction is set to the reverse feed direction (the direction in which the meshing element connecting body 131 is fed backward), and the number of needles of the sewing machine is set to 5. Step 2 of this device corresponds to the arrow P1 in Figure 34 and executes reverse feeding of the meshing element connecting body 131. This reverse feeding corresponds to the rope-shaped body 12 protruding from the front end of the meshing element connecting body 131. Backstitch 5 stitches of 2-point zigzag at the end.

In the installation step 3 in Figure 33, the installation mode of "thread sawtooth" is selected, the feed direction is the forward feed direction, and the number of stitches of the sewing machine is set to 6. Step 3 of this device corresponds to arrow P2 in Figure 34 and executes the forward feed of the meshing element connecting body 131. This forward feeding corresponds to the rope-shaped protruding from the front end of the meshing element connecting body 131. A 2-point zigzag stitch of 6 stitches is made on the end of the body 12.

In the installation step 4 in Figure 33, the installation mode of "zipper sewing disc" is selected, the feed direction is the forward feed direction, and the number of needles of the sewing machine is set to 3. Step 4 of this device corresponds to the arrow P3 in Figure 34, and executes the forward feed of the meshing element connecting body 131. This forward feed corresponds to 3 needles along the end of the upper stopper 17. of seams.

In the installation step 5 in Figure 33, the installation mode of "upper stop bartack" is selected, the feed direction is the forward feed direction, and the number of stitches of the sewing machine is set to 4. Step 5 of this device corresponds to arrow P4 in Figure 34, and stops the feed of the meshing element connecting body 131 corresponding to the 4 stitches between the upper stopper 17 and the adjacent meshing element 11.

In the installation step 6 of Figure 33, the installation mode of "zipper sewing disc" is selected, the feeding direction is the forward feeding direction, and the number of stitches of the sewing machine is set to n×4 (n is the meshing element 11 of the meshing element connector 131 number). Step 6 of the device corresponds to the arrow P5 in Figure 34 and executes the forward feed of the meshing element link 131. The forward feed corresponds to the blind sewing of each meshing element 11 including 4 needles. The jagged seams formed. Furthermore, the forward feed of the meshing element connecting body 131 corresponding to the zigzag seam formed by the blind sewing of all the meshing elements 11 is repeatedly performed.

In the installation step 7 in Figure 33, the installation mode of "opener bartack" is selected, the feed direction is the forward feed direction, and the number of stitches of the sewing machine is set to 4. Step 7 of this device corresponds to arrow P6 in Figure 34, and stops the feed of the meshing element connecting body 131 in response to the four-pin coupling between the meshing element 11 and the plug 15.

In the installation step 8 in Figure 33, the installation mode of "opener lock sewing" is selected, the feed direction is the forward feed direction, and the number of stitches of the sewing machine is set to 7. Step 8 of this device corresponds to arrow P7 in Figure 34, and executes the forward feed of the meshing element connecting body 131. This forward feed corresponds to the direction from the front end of the sewing portion 151 of the latch 15 to the rear end. 7 stitches of lock stitching are performed on the whole part.

In the installation step 9 in Figure 33, the installation mode of "opener lock sewing" is selected, the feed direction is the reverse feed direction, and the number of stitches of the sewing machine is set to 6. Step 9 of this device corresponds to the arrow P8 in Figure 34, and performs reverse feeding of the meshing element connecting body 131. This reverse feeding is performed from the rear end of the sewing portion 151 of the latch 15 toward the front end. 6 stitches of lock stitch and backstitch.

In the installation step 10 in Figure 33, the installation mode of "sewing completed" is set. By this device step 10, not only the feeding operation of the meshing element coupling body 131 but also all sewing operations are completed.

In addition, the setting contents of the "device step", "device mode", and "number of continuous stitches" as setting parameters for performing the feeding of the meshing element coupling shown in the aforementioned Fig. 33 can be input through the setting Part 93 can be set arbitrarily. Fig. 38 is a display image of the display screen 931 of the setting input unit 93 when setting setting parameters regarding the feed of the meshing element coupling body. The setting input unit 93 can switch the display image of the display screen 931 to an input image of setting parameters regarding the feed of the meshing element coupling body in FIG. 38 by performing a switching operation using the surrounding input switches 932 ~941, set "installation step", "installation mode", and "number of continuous stitches". In addition, the setting parameters regarding the feed of the meshing element coupling body are integrated with the setting parameters regarding the aforementioned needle entry position, and are registered in the memory 92 as the setting parameters for sewing control of the sliding slide fastener. . During sewing, the registered setting parameters of the sewing control of the sliding zipper are read and the motion control of sewing is executed.

Furthermore, in the specific example of setting parameters for the feed of the meshing element coupled body, the sewing of the meshing element coupled body 131 is exemplified. However, the same method can be used when sewing the meshing element coupled body 132. The method determines the setting parameters. That is, when the meshing element coupling body 132 is sewn, the box pin 16 is located at the front end and the upper stopper 17 is located at the rear end. Therefore, the setting parameters for the feed of the meshing element coupling body are set according to the following situation. It is set so that in the early stage of sewing, reverse stitching and lock stitching are performed on the sewing portion 161 of the box pin 16, and in the final stage of sewing, bartacking is performed on the upper stopper 17, and the lock stitching is performed on the connecting portion 132 of the engaging element. The end of the rope-like body 12 whose rear end protrudes is used to perform two-point zigzag zigzag stitching and backstitching. As long as the above situation is taken into consideration, the same settings are used for sewing the meshing element coupling 131.

[Sewing action of sliding zipper products performed by zigzag sewing machine] Taking the case where the engagement element connecting body 131 on the left side of the aforementioned sliding slide fastener 10C is sewn to the end edge portion 2a of the object to be sewn 2 as an example, the sawtooth on which the slide fastener conveying mechanism 40C is mounted is based on Figures 33 and 34 The sewing operation of the sewing machine 100 will be described.

First, the setting parameters of the sewing control of the sliding zipper are read from the memory 92, and according to the sewing machine step 0 regarding the setting parameters of the needle entry position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled to sew. The needle is positioned at the sewing start position Ps in Figure 34. In addition, according to the installation step 1, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a normal pressing pressure, and the meshing element connecting body 131 is forwardly fed by one stitch at the reference feed amount × 1. share.

Next, according to the sewing machine step 1 regarding the setting parameters of the needle drop position in Figure 33, start the sewing machine motor 105, and control the needle swing motor 106 and the feed adjustment motor 107. According to the arrow P1 in Figure 34, for the rope-shaped body Backstitch 5 stitches of zigzag stitch at the front end of 12. In addition, simultaneously with this, according to the device step 2, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a low pressing pressure, and the meshing element connecting body 131 is advanced in the reverse direction at the standard feed amount × 1. Give 5 stitches.

Next, in accordance with the sewing machine step 2 of the setting parameters of the needle drop position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and in accordance with the arrow P2 in Figure 34, 6 operations are performed on the front end of the rope-shaped body 12 Zigzag stitches. In addition, simultaneously with this, according to the device step 3, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a low pressing pressure, and the meshing element connecting body 131 is forwarded at the reference feed amount × 1. Feed 6 stitches.

Next, according to the sewing machine step 3 of the setting parameters of the needle entry position in Figure 33, control the needle swing motor 106 and the feed adjustment motor 107, and follow the arrow P3 in Figure 34 to perform 3 steps on the left side of the upper stopper 17 Stitched lockstitch. In addition, simultaneously with this, according to the device step 4, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a normal pressing pressure, and the meshing element connecting body 131 is forwarded at the reference feed amount × 1. Feed 3 stitches.

Next, according to the sewing machine step 4 regarding the setting parameters of the needle drop position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and according to the arrow P4 in Figure 34, the upper stopper 17 and the meshing element 11 are Make 4 stitches of bartacks in between. In addition, in synchronization with this, according to the device step 5, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a normal pressing pressure, and the feeding of the meshing element connecting body 131 is stopped.

Next, in accordance with step 5 of the sewing machine regarding the setting parameters of the needle drop position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and in accordance with the arrow P5 in Figure 34, 4 stitches are performed on each meshing element 11. Zigzag seam formed by blind seam. In addition, simultaneously with this, according to the device step 6, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a normal pressing pressure, and the meshing element connecting body 131 is forwarded by the reference feed amount × 1. Feed n×4 stitches.

Next, according to the sewing machine step 6 regarding the setting parameters of the needle drop position in Fig. 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and according to the arrow P6 in Fig. 34, the operation is performed between the meshing element 11 and the latch 15. 4 stitches of bartack. In addition, in synchronization with this, according to the device step 7, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a low pressing pressure, and the feeding of the meshing element connecting body 131 is stopped.

Next, in accordance with the sewing machine step 7 regarding the setting parameters of the needle entry position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and in accordance with the arrow P7 in Figure 34, from the front end of the sewing portion 151 of the latch 15 Perform 7 stitches of lock stitching on each threading hole 152 toward the rear end. In addition, simultaneously with this, according to the device step 8, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a low pressing pressure, and the meshing element connecting body 131 is forwarded at the standard feed amount × 2. Feed 7 stitches.

Next, in accordance with the sewing machine step 8 of the setting parameters of the needle entry position in Figure 33, the needle swing motor 106 and the feed adjustment motor 107 are controlled, and in accordance with the arrow P8 in Figure 34, from the rear of the sewing portion 151 of the latch 15 Each threading hole 152 is backstitched with six stitches of lock stitching toward the front end. In addition, simultaneously with this, according to the device step 9, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled, the cloth pressing member 25 is set to apply a low pressing pressure, and the meshing element connecting body 131 is advanced in the reverse direction at the standard feed amount × 2. Give 6 stitches.

Thereby, the sewing needle reaches the sewing end position Pe. In addition, according to the device step 10, the conveying motor 42C and the cloth pressing member lifting motor 253 are controlled to raise the cloth pressing member 25 to the cloth release position, stop the feeding operation of the conveying gears 415C and 416C, and stop the driving of the sewing machine motor 105. Then, the sewing of the meshing element coupling body 131 is completed.

[Technical effects of the second embodiment] The zigzag sewing machine 100 provided with the aforementioned zipper conveyance mechanism 40C has a conveyance gear 415C that meshes with the meshing element 11 on the front side of the needle drop position and a conveyance gear 416C that meshes with the meshing element 11 on the rear side of the needle drop position. Therefore, when the engaging element coupling body 131 having the plug pin 15 or the engaging element coupling body 132 having the box pin 16 is sewn to the object to be sewn 2, it is also possible to perform the sewing operation when the plug pin 15 or the box pin 16 passes near the needle drop position. By engaging at least one of the conveying gears 415C and 416C with the meshing element 11, the meshing element couplings 131 and 132 can be conveyed more accurately, so that high-quality sewing can be performed.

In addition, the zigzag sewing machine 100 provided with the zipper conveying mechanism 40C is provided with a setting input unit 93 for inputting parameters including the type of sewing (sewing form), sequence, number of stitches, and amount of movement. The control device 90 is configured to operate according to the parameters including The setting parameters of the meshing element connection of the parameters input from the setting input unit 93 are used to sew in a manner that controls the feed adjustment motor 107 of the cloth feeding mechanism, the needle swing motor 106, the sewing machine motor 105, and the zipper conveying mechanism. 40C. Therefore, during sewing of the meshing element couplings 131 and 132, when the type of sewing is changed midway, for example, from self-locking stitching to zigzag stitching or tack stitching, sewing can be stopped at an appropriate time without It is necessary to perform operations such as switching the type of sewing. Therefore, once the sewing of the meshing element couplings 131 and 132 is started, the sewing can be completed without any operation until the end. Therefore, the workload of the operator of the sewing machine can be significantly reduced. In addition, since there is no need to perform the operation of switching the sewing type midway, the influence of the sewing machine operator's operating skills is reduced, so high-quality sewing can be stably performed regardless of skill.

[other] The structure of the head portion 112 of the engaging element 11 of the engaging element couplings 13, 131, 132 of the slide fasteners 10 and 10C is not limited to that shown in Fig. 4 . For example, the head structure of various engaging elements used in general sliding zippers can be used. In addition, similarly, various shapes can be used for the shape of the latch 15 or the box pin 16 of the slide fastener 10C.

In addition, in the case where a feed adjustment motor is provided in the cloth feeding mechanism and the feed amount is adjusted by the feed adjustment motor at a predetermined timing based on detection by the encoder of the sewing machine motor, a deletion function is prepared in the data memory in advance. The specific numerical data of the needle swing amount of the needle motor for needle entry at each needle entry point, the amount of forward movement caused by the conveyance motor 42, and the feed amount of the object to be sewn caused by the adjustment motor can be obtained. The sewing of the meshing element couplings 13, 131, and 132 performed by the zigzag sewing machine 100 is performed more favorably. [Industrial utilization possibility]

The present invention can be used for sewing a sliding slide fastener in which engagement elements are connected via a rope-like body.

1, 1A, 1B, 1C‧‧‧Sliding zipper products 2‧‧‧Objects to be sewn 2a‧‧‧End edge part 2b‧‧‧Overlap 10. 10C‧‧‧Sliding zipper 11‧‧‧Meshing elements 12‧‧‧Rope-like body 13, 131, 132‧‧‧Meshing element connector 14‧‧‧Sliding piece 15‧‧‧Latch 16‧‧‧Box Pin 151, 161‧‧‧Sewing part 152, 162‧‧‧Threading holes 20‧‧‧Sewing machine frame 24‧‧‧Needle plate (zipper guide) 26‧‧‧Sewing needle 40, 40A, 40B, 40C‧‧‧Zip transport mechanism 41, 41A, 41B, 415C, 416C‧‧‧Transportation gears 42, 42A, 42B, 42C‧‧‧Transportation motor 43. 43C‧‧‧Supporting mechanism 45‧‧‧Base plate 46, 46C‧‧‧Sliding guide 47‧‧‧Pneumatic cylinder (actuator) 90‧‧‧Control device 93‧‧‧Setting input section 931‧‧‧Display screen 932～941‧‧‧Input switch 100‧‧‧Zigzag sewing machine (sewing machine) 105‧‧‧Sewing machine motor 106‧‧‧Swing needle motor 107‧‧‧Feed adjustment motor 111‧‧‧Feet 112‧‧‧Head 116, 117‧‧‧Side 242‧‧‧Pinhole 243‧‧‧Feed ditch 253‧‧‧Lifting motor 413‧‧‧Origin sensor 414‧‧‧Detection Plate a1, a11‧‧‧The head falls to the pin point a2～a6‧‧‧The end edge has a pin point D‧‧‧Downline (sewing thread) R1, R2‧‧‧area t1～t7‧‧‧Seam U‧‧‧Online (sewing thread)

[Figure 1] is a top view of a sliding zipper product according to the first embodiment of the invention. [Picture 2] is an enlarged top view of a sliding zipper product. [Figure 3] is a perspective view of the meshing element. [Fig. 4] is an enlarged plan view showing a partially cutaway state of the meshing elements. [Fig. 5] is a view of the needle entry point of the seam of the left meshing element coupling body viewed from the rear. [Fig. 6] is an enlarged plan view of Comparative Example (1) of the slide fastener product. [Figure 7] is an enlarged plan view of Comparative Example (2) of the slide fastener product. [Fig. 8] is an enlarged plan view of Example (2) of the slide fastener product. [Fig. 9] is an enlarged plan view of Example (3) of the slide fastener product. [Figure 10] is an enlarged plan view of another example of a sliding zipper product. [Fig. 11] is a perspective view of a zigzag sewing machine according to an embodiment of the invention. [Picture 12] is a perspective view of the needle plate. [Picture 13] A perspective view of the surroundings of the needle drop position. [Figure 14] This is a top view of the zipper transport mechanism. [Figure 15] Rear view of the zipper transport mechanism. [Picture 16] Rear view of the area surrounding the needle drop position. [Fig. 17] It is a top view of a state in which the upper cover of the base plate of the support mechanism and the upper cover of the support arm are removed. [Figure 18] is a schematic diagram showing an example of using a toothed pulley in a transmission mechanism. [Fig. 19] is a rear view showing an example of a conveyance mechanism connected to a pneumatic cylinder that provides movement to the base plate. [Fig. 20] This is a rear view of another example (1) of the zipper conveying mechanism. [Fig. 21] This is a right side view of another example (1) of the zipper transport mechanism. [Fig. 22] It is a rear view of another example (1) of the zipper conveyance mechanism in which the conveyance gear is arranged on the upper side of the throat plate. [Fig. 23] It is a right side view of another example (1) of the zipper conveyance mechanism in which the conveyance gear is arranged on the upper side of the throat plate. [Fig. 24] This is a rear view of another example (2) of the zipper conveying mechanism. [Fig. 25] is a top view of the zipper transport mechanism mounted on the zigzag sewing machine according to the second embodiment of the invention. [Figure 26] Rear view of the zipper transport mechanism. [Figure 27] This is a perspective view of a selected part of the zipper transport mechanism. [Figure 28] This is a top view of a selected part of the zipper transport mechanism. [Fig. 29] It is a top view of one meshing element coupling body of the slide fastener product. [Figure 30] It is a top view of the other engagement element coupling body of the slide fastener product. [Fig. 31] is a block diagram of a control system of a sewing machine equipped with the zipper transport mechanism shown in Fig. 25. [Fig. 32] is a front view of the setting input unit. [Fig. 33] is an explanatory diagram showing setting parameters when sewing the engagement element coupling body of the sliding slide fastener of Fig. 29. [Fig. 34] is an explanatory diagram showing the needle entry position of the object to be sewn and the coupling element. [Fig. 35 A] is an explanatory diagram showing the sewing mode No. 1. [Fig. 35B] is an explanatory diagram showing the sewing mode No. 2. [Figure 35C] is an explanatory diagram showing the sewing form No. 3. [Figure 35D] is an explanatory diagram showing the sewing form No. 4. [Fig. 36 A] is an explanatory diagram showing the sewing mode No. 5. [Figure 36B] is an explanatory diagram showing the sewing form No. 6. [Figure 36C] is an explanatory diagram showing the sewing form No. 7. [Figure 36D] is an explanatory diagram showing the sewing form No. 8. [Fig. 37] This is a selection image of the device mode displayed on the display screen of the setting input unit when setting the setting parameters for the feed engagement element coupling. [Fig. 38] This is a display image of the display screen of the setting input unit when setting setting parameters regarding the feed of the meshing element coupling body.

2‧‧‧Objects to be sewn

11‧‧‧Meshing elements

13‧‧‧Meshing element connection body

24‧‧‧Needle plate (zipper guide)

25‧‧‧Pressing parts

26‧‧‧Sewing needle

27‧‧‧Needle bar

40‧‧‧Zip transport mechanism

41‧‧‧Transportation gear

49‧‧‧Zipper press

252‧‧‧Gap

483‧‧‧driven pulley

491‧‧‧Gap

Claims (15)

A sewing machine that sews a sliding zipper with a plurality of meshing elements connected by a rope-like meshing element connection to the end edge of an object to be sewn. The sewing machine is characterized by: having: The cloth feeding mechanism feeds the object to be sewn; and the zipper conveying mechanism conveys the aforementioned meshing element connection; the zipper conveying mechanism is equipped with: a conveying gear and is equipped with: the aforementioned meshing element meshed with the aforementioned meshing element connection. teeth; a conveyance motor that imparts rotational motion to the conveyance gear; a zipper guide that guides the meshing element connection in the same direction as the feeding direction of the object to be sewn; and a zipper press that suppresses the sewing The meshing element coupling body conveyed by the conveyance gear is disengaged upward. The conveyance gear rotates around an axis perpendicular to the needle plate. The teeth of the conveyance gear mesh with the meshing element coupling body below the zipper presser. The aforementioned engaging elements. A sewing machine that sews a sliding zipper with a plurality of meshing elements connected by a rope-like meshing element connection to the end edge of an object to be sewn. The sewing machine is characterized by: having: The cloth feeding mechanism feeds the object to be sewn; and the zipper conveying mechanism conveys the aforementioned meshing element connection; the zipper conveying mechanism is provided with: a conveying gear, which is provided with: meshing The teeth of the meshing element in the meshing element coupling body; the conveyance motor imparts a rotational motion to the conveyance gear; and the zipper guide directs the meshing element coupling body in the same direction as the feeding direction of the object to be sewn guide; and the zipper presser prevents the meshing element connection body conveyed by the conveyance gear from being detached upward; the zipper guide has a feed groove formed in the needle plate and connects the meshing element The plurality of engaging elements of the body are guided in the same direction as the feeding direction of the object to be sewn. A sewing machine that sews a sliding zipper with a plurality of meshing elements connected by a rope-like meshing element connection to the end edge of an object to be sewn. The sewing machine is characterized by: having: The cloth feeding mechanism feeds the object to be sewn; and the zipper conveying mechanism conveys the aforementioned meshing element connection; the zipper conveying mechanism is equipped with: a conveying gear and is equipped with: the aforementioned meshing element meshed with the aforementioned meshing element connection. teeth; a conveyance motor that imparts rotational motion to the conveyance gear; a zipper guide that guides the meshing element connection in the same direction as the feeding direction of the object to be sewn; and a zipper press that suppresses the sewing The meshing element coupling body conveyed by the conveyance gear is detached upward; and the conveyance gear is supported movably in a direction away from the needle entry position. A sewing machine that sews a sliding zipper with a plurality of meshing elements connected by a rope-like meshing element connection to the end edge of an object to be sewn. The sewing machine is characterized by: having: The cloth feeding mechanism feeds the object to be sewn; the zipper transport mechanism transports the aforementioned meshing element connection; the sewing machine motor moves the sewing needle up and down; the encoder detects the output shaft angle of the sewing machine motor; and the control device , is to control the aforementioned conveyance motor; the zipper conveyance mechanism is provided with: a conveyance gear, which is provided with: the teeth of the aforementioned meshing element meshed with the aforementioned meshing element connection body; the conveyance motor is to provide a rotational motion to the aforementioned conveyance gear; and the zipper guide a piece that guides the meshing element coupling body in the same direction as the feeding direction of the object to be sewn; and a zipper pressing piece that prevents the meshing element coupling body being conveyed by the conveyance gear from detaching upward; and the control device , means: each time the needle is dropped, the conveyance motor is driven at a predetermined timing based on detection by the encoder, so that the meshing element connection body moves by the amount of movement in the feed direction to the next needle drop point. The sewing machine according to claim 1, wherein the zipper guide has a feed groove formed on the needle plate and connecting the engaging elements The plurality of engaging elements of the body are guided in the same direction as the feeding direction of the object to be sewn. The sewing machine according to claim 1, 2, 4 or 5, wherein the conveyance gear is supported movably in a direction away from the needle drop position. The sewing machine according to claim 3, wherein the conveyance gear is supported so as to be movable together with the conveyance motor in a direction away from the needle drop position. The sewing machine according to claim 3, further comprising: an actuator serving as a driving source for the movement of the conveyance gear in a direction away from the needle drop position. The sewing machine according to any one of claims 1 to 5, further comprising: the conveying gear meshing with the meshing element at the upstream side of the sewing object at the needle drop position; The conveying gear of the meshing element is meshed with the conveying gear on the downstream side of the needle position in the feed direction of the workpiece. The sewing machine according to any one of claims 1 to 5, wherein the engagement element connection is sewn to the end edge of the object to be sewn by forming a lock seam opening. The sewing machine according to any one of claims 1 to 5, wherein the sewing machine is a zigzag sewing machine. The sewing machine according to claim 1, 2, 3 or 5, wherein the sewing machine is equipped with: a sewing machine motor that moves the sewing needle up and down; an encoder that detects the output shaft angle of the sewing machine motor; and a control device. , is to control the aforementioned conveying motor; the aforementioned control device is: every time the needle is dropped, the aforementioned conveying motor is driven at a predetermined timing based on the detection of the aforementioned encoder, so that the aforementioned meshing element connecting body reaches the next needle entry point. Move by the amount of movement in the feed direction. The sewing machine according to claim 4, wherein it is provided with: a setting input unit into which parameters including the type, sequence, number of stitches, and movement amount of sewing are input; and the control device is configured to comply with the settings from the setting input unit. The inputted parameters are used to sew in a manner that controls the cloth feeding mechanism and the zipper conveying mechanism. The sewing machine as described in claim 4, wherein the aforementioned sewing machine is equipped with: The needle swing motor makes the sewing needle swing needle arbitrarily in a direction orthogonal to the conveyance direction of the meshing element connection; the control device is: every time the needle is dropped, based on the detection of the encoder The needle swing motor is driven at the predetermined timing to swing the needle by the needle swing amount to the next needle entry point. The sewing machine according to claim 4, wherein the cloth feeding mechanism is equipped with a feed adjustment motor; and the control device drives the feed mechanism at a predetermined timing based on detection of the encoder each time the needle is dropped. Adjust the motor to move the object to be sewn by the amount of movement in the feed direction to the next needle entry point.