CN220413695U - Zipper stitching machine with positioning mechanism - Google Patents

Abstract

The utility model discloses a zipper stitching machine with a positioning mechanism, which comprises a stitching machine body, a positioning mechanism, a positioning sensing device, a zipper strip conveying device, a cloth belt conveying device and a discharging mechanism, wherein the stitching machine body is fixedly arranged on a working table plate, a frame is supported below the working table plate, the zipper strip conveying device is arranged in a groove in the working table plate, the positioning mechanism is arranged on the zipper strip conveying device in a straddling manner and can adjust and limit a zipper strip, the feeding side of the positioning mechanism is provided with the positioning sensing device which is electrically connected with the positioning mechanism, and the discharging mechanism is arranged at the discharging end of a machine head of the stitching machine body. The zipper stitching machine with the positioning mechanism reduces friction of the zipper in the conveying process, avoids the need of stopping the machine when the zipper is deviated, manually adjusts the zipper, can position the zipper in the conveying process, automatically adjusts and corrects the zipper when the zipper is deviated, and greatly improves the product quality and the production efficiency.

Description

Zipper stitching machine with positioning mechanism

Technical Field

The utility model relates to the technical field of zipper stitching machine manufacturing, in particular to a zipper stitching machine with a positioning mechanism.

Background

In the production process of the zipper, the sewing of the zipper is the most critical step, and the sewing of the zipper is the process of sewing the zipper cloth tape and the zipper strip together.

At present, common zipper strips and cloth belt stitching machines in the market all introduce the zipper strips after the zipper is combined into a limiting groove for positioning, the width of the limiting groove is the same as that of the zipper strips after the zipper is combined, and the zipper strips are conveyed to a stitching area to be stitched through the limiting groove or a limiting plate in the conveying process. The patent application number 202221425202.7 discloses a nylon zipper sewing machine, wherein a motor is arranged in the feeding mechanism, one end of the motor is in driving connection with a driving roller, an annular limiting groove I is formed in the driving roller, and a driven roller is arranged above the driving roller. Through the design, install feed mechanism and discharge mechanism on the fixing base, the zipper head module of cooperation feed mechanism one side is fixed a position the nylon zip fastener, and need not the manual drawing, fixes a position, and the material loading is swift convenient, and is provided with the limiting plate and carries out spacingly to the nylon zip fastener. According to the utility model, the first annular limiting groove on the driving roller, the zipper head module and the limiting plate on the feeding mechanism can well position and limit the zipper, but in the working process of the sewing machine, the first annular limiting groove, the zipper head module, the limiting plate and the like are fixed, and the zipper can be inevitably rubbed and touched with the first annular limiting groove, the zipper head module and the limiting plate in the conveying process, so that a large amount of heat is generated due to friction, the sewn zipper deforms, the quality of the zipper is influenced, if the zipper is positioned without using the fixed limiting groove, the limiting plate or the limiting hole, the zipper chain can deviate in the conveying and conveying process of the sewing machine due to vibration and other reasons caused by the machine work, and at the moment, the machine work is required to be stopped, the manual adjustment is performed, and time and labor are wasted.

Accordingly, there is a need for a stitching machine that reduces friction during chain transport and automatically adjusts for correction when the chain is offset.

Disclosure of Invention

The utility model aims to provide a zipper stitching machine with a positioning mechanism, which reduces friction heat generation of a zipper strip in the conveying process, can position the zipper strip in the conveying process, automatically adjusts and corrects the zipper strip when the zipper strip is deviated, and can greatly improve the product quality and the production efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model relates to a zipper stitching machine with a positioning mechanism, which comprises a stitching machine body, a positioning mechanism, a positioning sensing device, a zipper chain conveying device, a cloth belt conveying device and a discharging mechanism, wherein a machine head of the stitching machine body is fixedly arranged on a working table plate, a machine frame is supported below the working table plate, and the zipper chain conveying device is arranged in a groove in the working table plate and is positioned at a feeding end of the machine head of the stitching machine body; the positioning mechanism is arranged on the zipper chain conveying device in a crossing way and can adjust and limit the zipper chains conveyed by the zipper chain conveying device, and a positioning induction device electrically connected with the positioning mechanism is arranged on the feeding side of the positioning mechanism; the discharging mechanism is arranged at the discharging end of the machine head of the sewing machine body and can pull and output the sewn zipper.

Further, the positioning mechanism comprises a fixed plate, a positioning plate, a first mounting plate, a guide rail, a driving assembly and a sliding block, wherein the two fixed plates are symmetrically arranged on two sides of the zipper strip conveying device in parallel, the two first mounting plates are vertically connected to the upper parts of the two fixed plates, and the guide rail is arranged on the bottom surface of the first mounting plate; the two sliding blocks are connected to the guide rail in a sliding manner, the tops of the positioning plates are fixedly connected with the sliding blocks on the same side, the cantilever ends of the positioning plates vertically extend downwards, and the two positioning plates are adjusted on the two sides of the zipper chain conveyed by the zipper conveying device; the driving assembly synchronously drives the two positioning plates to move in opposite directions or in opposite directions.

Further, the drive assembly includes connecting rod, dwang, second mounting panel and positioning mechanism motor, and two first mounting panel top surface intermediate positions horizontal installation have the second mounting panel, positioning mechanism motor sets up on the second mounting panel upper surface, positioning mechanism motor installs the intermediate position of second mounting panel, positioning mechanism motor's pivot fixed connection is in the mesopore of dwang, the dwang both ends are articulated one respectively the connecting rod, the connecting rod other end is articulated to be connected the top of locating plate.

Further, the distance between the bottom edge of the positioning plate and the conveying top surface of the zipper strip conveying device is not more than half of the thickness of the zipper strip.

Further, the positioning sensing device comprises sensing pieces and a controller, the number of the sensing pieces is two, the sensing pieces are vertically arranged on two sides of the zipper strip conveying device, and the distance between the sensing pieces can be regulated and controlled; the controller is arranged on the workbench plate, and the sensing piece outputs a sensing signal to the controller.

Further, the zipper strip conveying device comprises a conveying roller, a conveying belt and a conveying device motor, wherein a plurality of conveying rollers which are arranged in parallel are arranged in grooves of a working table plate, and the conveying belt for conveying the zipper strip is arranged outside the conveying rollers in a surrounding manner; the conveying device motor is arranged on the inner side of the frame through bolts, the conveying device motor outputs power to the conveying roller through a driving belt, and the top surface of the conveying belt and the upper surface of the working table plate are located on the same horizontal plane.

Further, the cloth belt conveying device comprises a fixing rod which is arranged on the working table plate and located on one side of the conveying belt, the top end of the fixing rod is fixedly connected with a roller rod which is horizontally arranged above the conveying belt, two rollers are arranged on the roller rod, and a gap is reserved between the two rollers and located right above the middle position of the conveying belt.

Further, a groove is formed in the edge position of the workbench plate in the feeding direction of the zipper strip, the groove and the conveyor belt are coaxially arranged, the bottom surface of the groove is flush with the top surface of the conveyor belt, and the zipper strip enters the conveyor belt after being limited for the first time through the groove.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the zipper stitching machine with the positioning mechanism, the conveyor belt is adopted to convey the chain, and the positioning mechanism is adopted to position the chain, so that compared with a traditional mode, friction heat generation of the zipper in the conveying process is reduced, deformation of the stitched zipper is avoided, and the quality of products is improved.

Through the joint use of location induction system and positioning mechanism, in zipper strip conveyer, when the chain takes place the skew, location induction system can in time respond to control positioning mechanism makes the reaction, automatic adjustment corrects the chain position, avoids stopping machine operation, manual adjustment has improved the production work efficiency of machine.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic perspective view of a zipper stitching machine with a positioning mechanism according to the present utility model;

FIG. 2 is a schematic view of the part of the portion A in FIG. 1;

FIG. 3 is a schematic view of a partial enlarged structure of the B part in the bitmap 1;

FIG. 4 is a schematic diagram of the front view of the zipper stitching machine with positioning mechanism of the present utility model;

FIG. 5 is a schematic bottom view of the positioning mechanism of the present utility model;

fig. 6 is a schematic structural diagram of a discharging mechanism in an embodiment of the present utility model.

Reference numerals illustrate: 1. a sewing machine body; 101. a work platen; 102. a frame; 103. a groove; 2. a positioning mechanism; 201. a fixing plate; 202. a positioning plate; 203. a first mounting plate; 204. a guide rail; 205. a connecting rod; 206. a rotating lever; 207. a second mounting plate; 208. a positioning mechanism motor; 209. a slide block; 3. a positioning sensing device; 301. an induction piece; 302. a controller; 4. a zipper strip conveying device; 401. a conveying roller; 402. a conveyor belt; 403. a conveyor motor; 404. a transmission belt; 5. a cloth belt conveying device; 501. a fixed rod; 502. a roller bar; 503. a roller; 6. a discharging mechanism; 601. a discharging mechanism motor; 602. a driving roller; 603. a limit groove; 604. a fixed block; 605. driven roller.

Detailed Description

The utility model has the core of providing a zipper stitching machine with a positioning mechanism, which reduces friction heat generation of a zipper strip in the conveying process, can position the zipper strip in the conveying process, automatically adjusts and corrects the zipper strip when the zipper strip is deviated, and can greatly improve the product quality and the production efficiency.

The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to the drawings, FIG. 1 is a schematic perspective view of a zipper stitching machine with a positioning mechanism according to the present utility model; FIG. 2 is a schematic view of the part of the portion A in FIG. 1; FIG. 3 is a schematic view of a partial enlarged structure of the B part in the bitmap 1; FIG. 4 is a schematic diagram of the front view of the zipper stitching machine with positioning mechanism of the present utility model;

FIG. 5 is a schematic bottom view of the positioning mechanism of the present utility model; fig. 6 is a schematic structural diagram of a discharging mechanism in an embodiment of the present utility model.

In one embodiment, as shown in fig. 1 and 4, a zipper stitching machine with a positioning mechanism comprises a stitching machine body 1, a positioning mechanism 2, a positioning sensing device 3, a zipper strip conveying device 4, a cloth belt conveying device 5 and a discharging mechanism 6, wherein a machine head of the stitching machine body 1 is fixedly arranged on a workbench plate 101, and the machine head is provided with a machine head

The frame 102 is supported below the workbench plate 101, and the zipper strip conveying device 4 is arranged in a groove in the workbench plate 101 and positioned at the feeding end of the machine head of the sewing machine body; the positioning mechanism 2 is arranged on the zipper chain conveying device 4 in a straddling way and can adjust and limit the zipper chains conveyed by the zipper chain conveying device 4, and a positioning induction device 3 electrically connected with the feeding side of the positioning mechanism 2 is arranged on the feeding side of the positioning mechanism; the discharging mechanism 6 is arranged at the discharging end of the machine head of the sewing machine body 1 and can pull and output the sewn zipper.

The zipper strips are conveyed by adopting the conveyor belt 402 in the zipper conveying device 4, and the zipper strips are positioned by the positioning mechanism 2, so that friction heat generation of the zipper strips in the conveying process is reduced, deformation of the sewn zippers is avoided, and the quality of products is improved relative to a traditional mode. Through the joint use of location induction system 3 and positioning mechanism 2, in zipper strip conveyer, when the chain takes place the skew, location induction system 3 can in time respond to control positioning mechanism 2 and react, automatic adjustment corrects the chain position, does not need to stop the machine operation, manual adjustment has improved the production work efficiency of machine.

In one embodiment of the present utility model, as shown in fig. 1, 4 and 5, the positioning mechanism 2 includes a fixing plate 201, a positioning plate 202, a first mounting plate 203, a guide rail 204, a driving assembly and a sliding block 209, where the two fixing plates 201 are symmetrically arranged on two sides of the zipper conveyer 4 in parallel, the two first mounting plates 203 are vertically connected to the upper parts of the two fixing plates 201, and the guide rail 204 is arranged on the bottom surface of the first mounting plate 203; the two sliding blocks 209 are connected to the guide rail 204 in a sliding manner, the top of the positioning plate 202 is fixedly connected with the sliding blocks 209 on the same side, the cantilever ends of the positioning plate 202 vertically extend downwards, and the two positioning plates 202 are adjusted on the two sides of the zipper conveyed by the zipper conveying device 4; the drive assembly synchronously drives the two positioning plates 202 to move in opposite directions or in opposite directions.

Specifically, the driving assembly comprises a connecting rod 205, a rotating rod 206, a second mounting plate 207 and a positioning mechanism motor 208, the second mounting plate 207 is horizontally arranged at the middle position of the top surfaces of the two first mounting plates 203, the positioning mechanism motor 208 is arranged on the upper surface of the second mounting plate 207, the positioning mechanism motor 208 is arranged at the middle position of the second mounting plate 207, and the rotating shaft of the positioning mechanism motor 208 is fixedly connected with the rotating rod

In the middle hole of the rotating rod 206, two ends of the rotating rod 206 are respectively hinged with a connecting rod 205, and the other end of the connecting rod 205 is hinged with the top of the positioning plate 202.

Specifically, the bottom edge of the positioning plate 202 is spaced from the conveying top surface of the fastener stringer 4 by no more than half the thickness of the fastener stringer.

The rotation of the motor 208 of the positioning mechanism can drive the rotating rod 206 to rotate around the motor rotating shaft, when the rotating rod 206 rotates, the connecting rods 205 at the two ends are driven to move in opposite directions through pulling force, the positioning plate 202 connected with the other end of the connecting rod 205 is further driven to move in opposite directions, and when the positioning plate 202 moves, only the sliding blocks 207 can move on the guide rails 204 through the two horizontally parallel guide rails 204 and the sliding blocks 207 fixedly connected with the two ends of the positioning plate 202, so that the synchronous movement of the two positioning plates 202 is further realized, and meanwhile, the two positioning plates are close to each other and are far away from each other; the bottom of the positioning plate 202 is kept at a small distance from the workbench plate 101, so that the positioning adjustment of the zipper is facilitated.

In a specific embodiment of the present utility model, as shown in fig. 1, 2 and 4, the positioning sensing device 3 includes sensing pieces 301 and a controller 302, the number of the sensing pieces 301 is two, the sensing pieces 301 are vertically disposed at two sides of the zipper strip conveying device 4, and the distance between the sensing pieces 301 is adjustable; the controller 302 is mounted on the table 101, and the sensing piece 301 outputs a sensing signal to the controller 302.

The position of the chain can be monitored in real time in the conveying process of the zipper through the sensing piece 301 on the positioning sensing device 3, when the chain is deviated and contacts the sensing piece 301, the positioning sensing device 3 immediately reacts through the controller 302, and the positioning mechanism 2 is further controlled to adjust and correct the position of the chain, so that the damage to a machine caused by the deviation of the position of the chain is prevented, and the influence on the quality of products is caused; the distance between the sensing pieces 301 can be adjusted, so that the sensing of the zipper offset by the positioning sensing device 3 is more accurate and fine.

In one embodiment of the present utility model, as shown in fig. 1 and 4, the fastener stringer conveyor 4 includes a conveyor roller 401, a conveyor belt 402, and a conveyor motor 403, the conveyor motor 403, a plurality of the conveyor rollers 401 arranged in parallel are installed in the groove of the table plate 101, and the conveyor rollers 401 are outside

Around which a conveyor belt 402 for conveying the fastener stringers is mounted; the conveyor motor 403 is mounted inside the frame 102 by bolts, the conveyor motor 403 outputs power to the conveyor roller 401 by a belt 404, and the top surface of the belt 402 is positioned at the same level as the upper surface of the table 101.

In one embodiment of the present utility model, as shown in fig. 1 and 3, a groove 103 is provided at an edge position of the table plate 101 in the feeding direction of the zipper strip, the groove 103 is coaxially disposed with the conveyor belt 402 and the bottom surface is flush with the top surface of the conveyor belt 402, and the zipper strip enters the conveyor belt 402 after being initially restrained by the groove 103.

The conveyer motor 403 drives the driving belt 404 to rotate, the driving belt 404 rotates to drive the conveying roller 401 to rotate, the conveying roller rotates to drive the conveying belt 402 to rotate, the conveying belt 402 rotates to drive the zipper to horizontally move, and the relative movement of the zipper and the conveyer can be reduced, so that the friction of the zipper in the conveying process is reduced, and the heated deformation of the zipper is avoided. The zipper strips are advantageously sewn by positioning the top surface of the conveyor belt 402 at the same level as the upper surface of the platen 101. By providing the groove 103, the chain entering the conveyor belt 402 can be limited, avoiding that the chain has been shifted when entering the conveyor belt.

In one embodiment of the present utility model, as shown in fig. 1 and 4, the tape conveying device 5 includes a fixing rod 501 installed on the table board 101 and located at one side of the conveyor belt 402, a roller rod 502 horizontally disposed above the conveyor belt 402 is fixedly connected to the top end of the fixing rod 501, two rollers 503 are disposed on the roller rod 502, and a gap is left between the two rollers 503 and located right above the middle position of the conveyor belt 402.

Through setting up strap conveyer 5, place the strap of the zip strip both sides that will stitch respectively on two rollers 503, carry the strap to sewing machine sewing up the position, through leaving the space between two rollers 503 and being located conveyer belt 402 intermediate position directly over, in order to preliminary fixed strap's position on the one hand, guarantee that the strap is located below zip strip both sides, on the other hand is in order to prevent that the strap distance on two rollers from being close when, take place touch, winding scheduling problem easily.

Specifically, the discharging mechanism 6 is arranged at the edge of the workbench plate 101, and the discharging mechanism 6 comprises a discharging part

The mechanism motor 601, the driving roller 602, the spacing groove 603, the fixed block 604 and the driven roller 605, the discharge mechanism motor 601 is fixed on the work platen 101 through the bolt and one end drive is connected with the driving roller 602, the spacing groove 603 has been seted up on the driving roller, spacing groove 603 the highest department is the same horizontal plane with work platen 101 upper surface, and the fixed block 604 sets up in discharge mechanism motor 601 upper end, fixes on work platen 101 through the bolt, and the driven roller 605 is connected with the fixed block 604 between the axle.

The slide fastener after the stitching is completed can be limited through the limiting groove 603 in the blanking mechanism 6, the driving roller 602 and the driven roller 605 slightly squeeze the slide fastener after the stitching, and the driving roller 602 is driven to rotate through the rotation of the discharging motor 601, so that the slide fastener after the stitching in the limiting groove 603 is driven to move, the slide fastener after the stitching is pulled, and the slide fastener discharging after the stitching is completed.

When the zipper stitching machine with the positioning mechanism is used, the motor of each device mechanism is turned on, the transmission belt 404 is driven to rotate through the transmission device motor 403, the transmission roller 401 is driven to rotate through the rotation of the transmission belt 404, the transmission belt 402 is driven to rotate through the rotation of the transmission roller, the zipper strip can be driven to horizontally move through the rotation of the transmission belt 402, the cloth belt is positioned and conveyed through the cloth belt conveying device 5, stitching of the zipper strip and the cloth belt is completed at the pressing plate below the stitching machine needle, and then the discharging mechanism 6 is used for discharging. In the working process of the sewing machine, the zipper strips entering the conveyor belt 402 from the feeding position below the workbench plate 101 are initially limited through the grooves 103, and then the zipper positions are further limited through the positioning sensing device and the positioning mechanism, so that the relative movement of the zipper strips and the conveyor can be effectively reduced, the friction of the zipper strips in the conveying process is reduced, the heated deformation of the zipper strips is avoided, and the sewing quality of the zipper is ensured and improved. When the zipper strips deviate in the conveyor belt 402, the zipper strips contact any one of the sensing pieces 301 in the positioning sensing device 3, the positioning sensing device 3 immediately reacts through the controller 302, the positioning mechanism motor 208 in the positioning mechanism 2 is started, the rotation of the positioning mechanism motor 208 drives the rotating rod 206 to rotate around the motor rotating shaft, the connecting rods 205 at two ends are driven to move in opposite directions through pulling force when the rotating rod 206 rotates, and the positioning plate 202 connected with the other ends of the connecting rods 205 is further driven to pull

The direction movement of the zipper is that through two horizontally parallel guide rails 204 and the sliding blocks 207 fixedly connected with the two ends of the positioning plate 202, the positioning plate 202 can only move on the guide rails 204 through the sliding blocks 207 when moving, so that the offset zipper is adjusted and corrected in position, when the zipper is not contacted with the sensing piece 301 any more after adjustment, the controller 302 controls the positioning mechanism motor 208 to rotate reversely to enable the positioning plate 202 to return to the initial position, and then the motor 208 is turned off. When zipper teeth are offset in the zipper sewing process, the zipper can be automatically adjusted and corrected without stopping manual adjustment of a machine, so that manpower is reduced, and meanwhile, the production working efficiency of a sewing machine is improved.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (8)

1. A zipper stitching machine with a positioning mechanism, characterized in that: the sewing machine comprises a sewing machine body (1), a positioning mechanism (2), a positioning sensing device (3), a zipper strip conveying device (4), a cloth belt conveying device (5) and a discharging mechanism (6), wherein a machine head of the sewing machine body (1) is fixedly arranged on a working table plate (101), a frame (102) is supported below the working table plate (101), and the zipper strip conveying device (4) is arranged in an inner groove of the working table plate (101) and is positioned at a feeding end of the machine head of the sewing machine body (1); the positioning mechanism (2) is arranged on the zipper chain conveying device (4) in a straddling manner and can adjust and limit the zipper chain conveyed by the zipper chain conveying device (4), and a positioning induction device (3) electrically connected with the feeding side of the positioning mechanism (2) is arranged on the feeding side of the positioning mechanism; the discharging mechanism (6) is arranged at the discharging end of the machine head of the sewing machine body (1) and can pull and convey the sewn zipper.

2. The zipper stitching machine with positioning mechanism of claim 1 wherein: the positioning mechanism (2) comprises a fixed plate (201), a positioning plate (202), a first mounting plate (203), guide rails (204), a driving assembly and a sliding block (209), wherein the two fixed plates (201) are symmetrically arranged on two sides of the zipper conveying device (4) in parallel, the two first mounting plates (203) are vertically connected to the upper parts of the two fixed plates (201), and the guide rails (204) are arranged on the bottom surface of the first mounting plates (203); the two sliding blocks (209) are connected to the guide rail (204) in a sliding manner, the tops of the positioning plates (202) are fixedly connected with the sliding blocks (209) on the same side, the cantilever ends of the positioning plates (202) vertically extend downwards, and the two positioning plates (202) are adjusted on the two sides of a zipper chain conveyed by the zipper chain conveying device (4); the driving assembly synchronously drives the two positioning plates (202) to move towards or away from each other.

3. The zipper stitching machine with positioning mechanism of claim 2 wherein: the driving assembly comprises a connecting rod (205), a rotating rod (206), a second mounting plate (207) and a positioning mechanism motor (208), wherein the second mounting plate (207) is horizontally mounted at the middle position of the top surfaces of the two first mounting plates (203), the positioning mechanism motor (208) is arranged on the upper surface of the second mounting plate (207), the positioning mechanism motor (208) is mounted at the middle position of the second mounting plate (207), the rotating shaft of the positioning mechanism motor (208) is fixedly connected in a middle hole of the rotating rod (206), two ends of the rotating rod (206) are respectively hinged with one connecting rod (205), and the other ends of the connecting rods (205) are hinged with the top of the positioning plate (202).

4. A zipper stitching machine with a positioning mechanism as recited in claim 3 wherein: the distance between the bottom edge of the positioning plate (202) and the conveying top surface of the zipper strip conveying device (4) is not more than half of the thickness of the zipper strip.

5. The zipper stitching machine with positioning mechanism of claim 1 wherein: the positioning induction device (3) comprises induction pieces (301) and a controller (302), wherein the number of the induction pieces (301) is two, the induction pieces are vertically arranged on two sides of the zipper strip conveying device (4), and the distance between the induction pieces (301) can be regulated and controlled; the controller (302) is mounted on the workbench plate (101), and the sensing piece (301) outputs a sensing signal to the controller (302).

6. The zipper stitching machine with positioning mechanism of claim 1 wherein: the zipper strip conveying device (4) comprises conveying rollers (401), a conveying belt (402) and a conveying device motor (403), wherein a plurality of conveying rollers (401) which are arranged in parallel are arranged in grooves of a workbench plate (101), and the conveying belt (402) for conveying the zipper strips is arranged on the outer side of the conveying rollers (401) in a surrounding mode; the conveying device motor (403) is mounted on the inner side of the frame (102) through bolts, the conveying device motor (403) outputs power to the conveying roller (401) through a driving belt (404), and the top surface of the conveying belt (402) and the upper surface of the workbench plate (101) are located on the same horizontal plane.

7. The zipper stitching machine with positioning mechanism of claim 6 wherein: the cloth belt conveying device (5) comprises a fixing rod (501) which is arranged on the workbench plate (101) and is positioned on one side of the conveying belt (402), a roller rod (502) which is horizontally arranged above the conveying belt (402) is fixedly connected to the top end of the fixing rod (501), two rollers (503) are arranged on the roller rod (502), and a gap is reserved between the two rollers (503) and is positioned right above the middle position of the conveying belt (402).

8. The zipper stitching machine with positioning mechanism of claim 6 wherein: the novel zipper feeding device is characterized in that a groove (103) is formed in the edge position of the workbench plate (101) in the feeding direction of the zipper, the groove (103) and the conveying belt (402) are coaxially arranged, the bottom surface of the groove is flush with the top surface of the conveying belt (402), and the zipper enters the conveying belt (402) after being limited for the first time through the groove (103).