CN217070378U - Zipper double-end punching machine - Google Patents

Abstract

The utility model relates to a zip fastener double-end punching machine, be in including board and setting on the board: the zipper guide mechanism comprises a zipper guide unit and a traction unit, wherein the zipper guide unit is used for conveying zipper strips, and the traction unit is used for pulling the zipper strips with the sizing holes; the punching mechanism is used for simultaneously punching two ends of the zipper belt; the positioning mechanism comprises a first positioning unit and a second positioning unit, the first positioning unit is used for positioning the left end of the sizing hole, the second positioning unit is used for positioning the right end of the sizing hole, and the punching mechanism is located between the first positioning unit and the second positioning unit. The utility model discloses a fix a position the both ends in sizing hole on the zipper belt to can once only accomplish the operation of punching a hole at zipper belt both ends, effectively improve double-end zipper's the efficiency of punching a hole, reduce the manufacturing cost of enterprise.

Description

Zipper double-end punching machine

Technical Field

The utility model relates to a zip fastener production facility field especially relates to a zip fastener double-end piercing press.

Background

The punching machine is used for processing the zipper, and is used for punching the position of the adhesive layer on the zipper tape which is adhered with the adhesive layer so as to facilitate the injection molding of the follow-up zipper head. The existing punching machine is only suitable for punching operation of a single-end zipper, and can only position the left side of a fixed-size hole in a zipper belt, so that when the double-end zipper is needed to be punched, one end of the double-end zipper needs to be punched, and the other end of the double-end zipper needs to be punched again in reverse, so that the machining efficiency is low, the cost is increased, and the batch production of products is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a double-head hole punch capable of punching both ends of a zipper at the same time.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a zip fastener double-end punching machine, includes the board and sets up on the board: the zipper guide mechanism comprises a zipper guide unit and a traction unit, wherein the zipper guide unit is used for conveying zipper strips, and the traction unit is used for pulling the zipper strips with the sizing holes; the punching mechanism is used for simultaneously punching two ends of the zipper belt; the positioning mechanism comprises a first positioning unit and a second positioning unit, the first positioning unit is used for positioning the left end of the sizing hole, the second positioning unit is used for positioning the right end of the sizing hole, and the punching mechanism is located between the first positioning unit and the second positioning unit.

Above-mentioned double-end piercing press drives the conveying of zipper strip through leading chain mechanism, make the zipper strip pass through first positioning unit and second positioning unit, wherein, it drives the zipper strip and removes to the right side to lead chain mechanism, first positioning unit begins the left end in fixed size hole of location, make the distance between the left end in fixed size hole and the mechanism of punching a hole be predetermined distance, then second positioning unit begins the right-hand member in fixed size hole of location, make the right-hand member in fixed size hole and the distance between the mechanism of punching a hole be predetermined distance, then rethread punch a hole the mechanism and punch a hole simultaneously to the both ends of zipper strip, thereby can once only accomplish the operation of punching a hole at zipper strip both ends, effectively improve double-end zipper's punching efficiency, reduce enterprise manufacturing cost.

Furthermore, the punching mechanism comprises a punching die, a supporting table and a punching driving piece, the zipper belt passes through the upper surface of the supporting table, and the punching driving piece is used for driving the punching die to be close to or far away from the supporting table.

Above-mentioned mechanism of punching a hole accomplishes the location back in sizing hole at first positioning unit and second positioning unit, drives the pushing down of punching die through the driving piece that punches a hole, makes the punching die be close to the brace table to the zipper strip to lieing in on the brace table punches a hole, simple structure and high efficiency.

Further, first positioning unit includes first mount table and first crochet hook subassembly, first mount table is located the left side of brace table, first crochet hook subassembly activity set up in first mount table, can be used to hook the left end in sizing hole.

Above-mentioned first positioning unit is located the left side of brace table, and the zipper strip makes the sizing hole pass through first positioning unit under the drive of chain guide mechanism, and first crochet hook subassembly action this moment, sizing hole can be hooked the left end in sizing hole by first crochet hook subassembly after removing one section distance, makes the zipper strip unable further removal to realize the location of sizing hole left end.

Further, the first crochet hook component comprises a first crochet hook and a first driving piece, the first driving piece is installed on the first installation platform through a first fixed seat, and the first driving piece is used for driving the first crochet hook to be close to or far away from the zipper strip.

Above-mentioned first crochet hook subassembly simple structure and effective, the hook point of first crochet hook can insert in the sizing hole, and first crochet hook is connected with the output of first driving piece, through the drive effect of first driving piece, can order about first crochet hook and reciprocate to can hook or loosen the zipper strip.

Further, the first crochet hook component further comprises a fixture block, an inductive switch and a limiting piece, the fixture block is fixed at the end of the first crochet hook, and the first crochet hook is elastically connected with the first fixed seat and can slide relative to the first fixed seat along the conveying direction of the zipper tape; the fixture block can trigger the inductive switch, and when the inductive switch is triggered, the limiting part is used for limiting the fixture block and avoiding the rebounding of the first crochet hook.

The first crochet hook component increases the moving direction of the first crochet hook, namely the first crochet hook can move left and right while moving up and down, when the first crochet hook hooks the left end of the fixed-size hole, the zipper tape can further move to the right under the driving of the guide chain structure and simultaneously drive the first crochet hook to move to the right until the fixture block triggers the induction switch, at the moment, the crochet hook is judged to reach the preset position, the guide chain structure is pulled, and the limiting part supports against the fixture block to avoid the rebound of the first crochet hook; the positioning mode can further improve the positioning accuracy of the first crochet hook component.

Further, the second positioning unit comprises a second mounting table, a second crochet hook component and a press belt component, the second mounting table is positioned on the right side of the support table, and the second crochet hook component is movably arranged on the second mounting table; the pressing belt component can be used for pressing the zipper belt to enable the second crochet hook component to hook the right end of the sizing hole.

Above-mentioned second mount table is located the right side of brace table, accomplish the location back at first positioning unit, second crochet hook subassembly action is with the right-hand member in location sizing hole, the right-hand member in sizing hole is not hooked by second crochet hook subassembly this moment, a segment distance has between the right-hand member in sizing hole and the second crochet hook subassembly, down press the zipper strip through pressing the area subassembly, make the zipper strip keep the state of tightening, the right-hand member card that can make the sizing hole promptly is on second crochet hook subassembly, thereby realize the location to sizing hole right-hand member.

Furthermore, the second crochet hook component comprises a second crochet hook and a second driving piece, the second driving piece is installed on the second installation platform through a second fixed seat, and the second driving piece is used for driving the second crochet hook to be close to or far away from the zipper strip.

Above-mentioned second crochet hook subassembly simple structure and effective, the hook point of second crochet hook can insert in the sizing hole, and the second crochet hook is connected with the output of second driving piece, through the drive effect of second driving piece, can order about the second crochet hook and reciprocate to can hook or loosen the zipper strip.

Furthermore, the press belt assembly is located between the first positioning unit and the second positioning unit, the press belt assembly comprises a press belt cylinder and a press rod, the press belt cylinder is used for driving the press rod to be close to or far away from a zipper belt, and a groove matched with the press rod is formed in the supporting table.

Above-mentioned press the area subassembly to press through the depression bar and move the zipper strip, the depression bar pushes down through driving the zipper strip, can make the fixed size hole right-hand member remove to the left side, on the second crochet hook of right-hand member card in fixed size hole, both can realize the location of fixed size hole right-hand member, also can guarantee that the zipper strip remains the state of tightening throughout at the in-process that punches a hole to further improve the accuracy nature that punches a hole.

Furthermore, the punching die comprises a first pressing plate and a second pressing plate which are elastically connected, a punching knife is arranged on the first pressing plate, and the punching knife penetrates through the second pressing plate.

Above-mentioned punching die is pushing down the in-process, the second clamp plate can play the fixed effect to the zipper strip with the upper surface contact of brace table, avoid the zipper strip to produce the skew and influence the effect of punching a hole at the in-process that punches a hole, then first clamp plate further drives the sword that punches a hole again and pushes down to accomplish punching a hole to the zipper strip with the brace table cooperation, certain cushioning effect can be played with second clamp plate to elastic connection's first clamp plate, avoid producing violent rigidity impact and influence the life of the sword that punches a hole.

Furthermore, the punching knife is two that the symmetry set up, the punching knife includes the cross cutting edge and is located a plurality of circular cutting edges of cross cutting edge both sides.

The setting of the cross cutting edge in the punching knife is for a breach is punched out in glue film department, makes things convenient for the follow-up moulding plastics of drawing the zipper head and cutting off of zipper strip, and the setting of circular cutting edge is for punching out a plurality of circular through-holes in glue film department, improves follow-up intensity and the stability of drawing the zipper head after moulding plastics.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a zip fastener double-end piercing press, left end through first positioning unit location sizing hole, make the left end in sizing hole and the mechanism of punching a hole between the distance be predetermined distance, begin the right-hand member in sizing hole of location through second positioning unit, make the right-hand member in sizing hole and the distance between the mechanism of punching a hole be predetermined distance, then rethread punch a hole the mechanism and punch a hole simultaneously to two of zip fastener area, thereby can once only accomplish the operation of punching a hole at zip fastener area both ends, effectively improve double-end zip fastener's the efficiency of punching a hole, reduce the manufacturing cost of enterprise.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic view of a part of the structure of the embodiment of the present invention.

Fig. 3 is a partial structural schematic diagram of fig. 2.

Fig. 4 is a schematic view of the structure of fig. 3 at another angle.

Fig. 5 is a partial structural schematic diagram of fig. 3.

Fig. 6 is a schematic structural view of the punching die of the present embodiment.

Fig. 7 is a partial structural schematic diagram of fig. 6.

Reference numerals: 1-a machine platform; 2-a chain guide mechanism; 21-a guide chain unit; 22-a traction unit; 3-a punching mechanism; 31-a punching die; 311-a first platen; 312-a second platen; 313-punching cutter; 3131-a cross-shaped blade; 3132-round blade; 32-a support table; 33-a punch drive; 4-a first positioning unit; 41-a first mounting table; 42-a first crochet hook component; 421-a first crochet hook; 422-a first driving member; 423-fixture block; 424-inductive switches; 425-a limit piece; 5-a second positioning unit; 51-a second mounting table; 52-a second crochet hook component; 521-a second crochet hook; 522-a second driver; 53-a belt press assembly; 531-a pressure lever; 532-belt pressing cylinder.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-7, a preferred embodiment of the present invention is as follows.

The sizing hole has been seted up on semi-manufactured goods's zip fastener belt, need be close to the position rubberizing of chain tooth tip at the both ends in sizing hole during processing, then punch a hole in rubberizing department, the length in every sizing hole on the zip fastener belt is probably inconsistent, and follow-up needs cut off in sizing hole department with the separation zip fastener, consequently, to double-end zip fastener, need punch a hole to the glue film that is located sizing hole both ends, please refer to figure 1, this embodiment is for improving punching efficiency, a zip fastener double-end punching machine is provided, including board 1, and set up on board 1: a chain guide mechanism 2, the chain guide mechanism 2 comprising a chain guide unit 21 and a drawing unit 22, the chain guide unit 21 being used for conveying the fastener tape, the drawing unit 22 being used for drawing the fastener tape having the sizing hole; the punching mechanism 3 is used for simultaneously punching two ends of the zipper belt; the positioning mechanism comprises a first positioning unit 4 and a second positioning unit 5, the first positioning unit 4 is used for positioning the left end of the sizing hole, the second positioning unit 5 is used for positioning the right end of the sizing hole, and the punching mechanism 3 is positioned between the first positioning unit 4 and the second positioning unit 5.

This embodiment is through leading the conveying that chain mechanism 2 drove the zipper strip, make the zipper strip pass through first positioning unit 4 and second positioning unit 5, wherein, it drives the zipper strip and removes to the right side to lead chain mechanism 2, first positioning unit 4 begins the left end in fixed size hole of location, make the transverse distance between the left end in fixed size hole and the mechanism 3 of punching a hole be predetermined distance, then second positioning unit 5 begins the right-hand member in fixed size hole of location, make the right-hand member in fixed size hole and the transverse distance between the mechanism 3 of punching a hole be predetermined distance, then rethread punch a hole mechanism 3 both ends of zipper strip simultaneously, thereby can once only accomplish the operation of punching a hole at zipper strip both ends, effectively improve double-end zipper's the efficiency of punching a hole, reduce enterprise manufacturing cost.

It should be noted that the chain guide unit 21 may be composed of a plurality of guide rollers for guiding the fastener tapes, and the drawing unit 22 is composed of a motor and rollers for guiding by friction between the rollers.

Referring to fig. 1 and 2, in the present embodiment, the punching mechanism 3 includes a punching die 31, a support base 32, and a punching drive 33, the zipper tape passes through an upper surface of the support base 32, and the punching drive 33 is used for driving the punching die 31 to approach or separate from the support base 32. After the positioning of the sizing holes is completed by the first positioning unit 4 and the second positioning unit 5, the punching mechanism 3 drives the punching die 31 to be pressed down through the punching driving piece 33, so that the punching die 31 is close to the supporting table 32, and the zipper tape on the supporting table 32 is punched, and the structure is simple and efficient.

Wherein, the punching driving member 33 and the supporting platform 32 are both fixed on the machine platform 1, the punching die 31 is located above the supporting platform 32, and the punching die 31 is fixedly connected with the output end of the punching driving member 33. In addition, the punching driving member 33 may be a cam driving mechanism or an air cylinder driving mechanism, and it is only required to drive the punching die 31 to ascend and descend, which is a conventional driving mechanism in the prior art, and the specific structure is not described herein again.

Referring to fig. 3, in the present embodiment, the first positioning unit 4 includes a first mounting platform 41 and a first crochet hook component 42, the first mounting platform 41 is located at the left side of the supporting platform 32, and the first crochet hook component 42 is movably disposed at the left end of the first mounting platform 41 for hooking the sizing hole. Wherein, the first mounting table 41 is provided with a passage through which the fastener tape passes.

First positioning unit 4 is located the left side of brace table 32, can fix on brace table 32 or board 1, and the zipper strip makes the sizing hole pass through first positioning unit 4 under the drive of chain guide mechanism 2, and first crochet hook subassembly 42 moves this moment, and the sizing hole can be hooked the left end in sizing hole by first crochet hook subassembly 42 after moving one section distance, makes the zipper strip unable further removal to realize the location of sizing hole left end.

Referring to fig. 3 and 5, the first hooking needle assembly 42 includes a first hooking needle 421 and a first driving element 422, the first driving element 422 is mounted on the first mounting table 41 through a first fixing seat, and the first driving element 422 is used for driving the first hooking needle 421 to approach or separate from the fastener tape. First crochet hook subassembly 42 simple structure and effective, first fixing base are fixed at the upper surface of first mount table 41, and first driving piece 422 is fixed on first fixing base, and the output of first driving piece 422 and first crochet hook 421 fixed connection and be used for driving first crochet hook 421 and reciprocate for first fixing base for the hook point of first crochet hook 421 can insert in the fixed-size hole.

Referring to fig. 5, in the present embodiment, the first hooking component 42 further includes a latch 423, an inductive switch 424 and a limiting member 425, the latch 423 is fixed at an end of the first hooking needle 421, and the first hooking needle 421 is elastically connected to the first fixing base and can slide in the conveying direction of the fastener tape relative to the first fixing base; the latch 423 may trigger the sensing switch 424, and when the sensing switch 424 is triggered, the limiting member 425 is configured to limit the latch 423 to prevent the first hook 421 from rebounding.

The first crochet hook component 42 additionally increases the moving direction of the first crochet hook 421, that is, the first crochet hook 421 can move up and down and also move left and right, when the first crochet hook 421 hooks the left end of the sizing hole, because the first crochet hook 421 is elastically connected with the first fixed seat, under the driving of the chain guide structure, the zipper tape can further move to the right side and simultaneously drive the first crochet hook 421 to move to the right side until the fixture block 423 triggers the inductive switch 424, at this time, it is determined that the crochet hook reaches the preset position, the chain guide structure is pulled, and the limiting member 425 supports the fixture block 423 to avoid the rebound of the first crochet hook 421; this positioning may further improve the positioning accuracy of the first bearded needle assembly 42.

It should be noted that the limiting member 425 may be an elastically arranged wedge-shaped block, when the first crochet hook 421 is pressed down, the latch 423 is located on the left side of the wedge-shaped block, and when the zipper tape drives the first crochet hook 421 and the latch 423 to move to the right side, the latch 423 may press the wedge-shaped block down and continue to move to the right side until the latch 423 disengages from the wedge-shaped block, and the latch 423 at this time reaches the preset position, and at the same time, the latch 423 is resiliently latched by the wedge. When the latch 423 needs to be reset, the first driving member 422 drives the first hook 421 to ascend. The first crochet hook 421 may be a driving mechanism such as an air cylinder. Of course, the position limiting member 425 may be limited by an air cylinder.

Referring to fig. 3 and 4, in the present embodiment, the second positioning unit 5 includes a second mounting table 51, a second crochet hook component 52 and a press belt component 53, the second mounting table 51 is located at the right side of the supporting table 32, and the second crochet hook component 52 is movably disposed on the second mounting table 51; the tape pressing member 53 is operable to press the fastener tape so that the second hooking needle member 52 is hooked on the right end of the sizing hole.

Second mount table 51 is located the right side of brace table 32, can fix on brace table 32 or board 1, accomplish the location back at first positioning unit 4, second crochet hook subassembly 52 moves the right-hand member in order to fix a position sizing hole, the right-hand member in sizing hole is not hooked by second crochet hook subassembly 52 this moment, a small segment distance has between the right-hand member in sizing hole and second crochet hook subassembly 52, push down the zipper strip through pressing area subassembly 53, make the zipper strip keep the state of tightening, the right-hand member card that can make sizing hole promptly is on second crochet hook subassembly 52, thereby realize the location to sizing hole right-hand member.

Referring to fig. 3 and 5, in the present embodiment, the second crochet hook assembly 52 includes a second crochet hook 521 and a second driving member 522, the second driving member 522 is mounted on the second mounting table 51 through a second fixing base, and the second driving member 522 is used for driving the second crochet hook 521 to approach or depart from the zipper tape.

The second hook needle assembly 52 is simple and effective in structure, the hook tip of the second hook needle 521 can be inserted into the size-fixed hole, the second hook needle 521 is connected with the output end of the second driving element 522, and the second hook needle 521 can be driven to move up and down through the driving action of the second driving element 522, so that the zipper tape can be hooked or loosened. The second driving member 522 may be a driving mechanism such as an air cylinder.

Referring to fig. 5, in the present embodiment, the tape pressing assembly 53 is located between the first positioning unit 4 and the second positioning unit 5, the tape pressing assembly 53 includes a tape pressing cylinder 532 and a pressing rod 531, the tape pressing cylinder 532 is used for driving the pressing rod 531 to approach or separate from the tape, and the supporting platform 32 is provided with a groove matched with the pressing rod 531. Note that the punching die 31 is provided with a space avoiding portion for engaging the pressing lever 531.

Press subassembly 53 and second crochet hook 521 to cooperate with the right-hand member in order to fix a position sizing hole, second driving piece 522 drive second crochet hook 521 descends and inserts in the sizing hole, press subassembly 53 this moment and press the zipper strip through depression bar 531, depression bar 531 pushes down through driving the zipper strip, make sizing hole right-hand member to the left side removal, the right-hand member card until sizing hole is on second crochet hook 521, both can realize the location of sizing hole right-hand member, also can guarantee that the zipper strip remains the state of tightening throughout at the in-process that punches a hole, thereby further improve the accuracy nature that punches a hole.

Referring to fig. 6 and 7, in the present embodiment, the punching die 31 includes a first pressing plate 311 and a second pressing plate 312, which are elastically connected, a punching blade 313 is disposed on the first pressing plate 311, and the punching blade 313 penetrates through the second pressing plate 312. Punching die 31 is at the in-process that pushes down, the upper surface contact of second clamp plate 312 and brace table 32, can play the fixed effect of zipper belt, avoid the zipper belt to produce the skew and influence the effect of punching a hole at the in-process that punches a hole, then first clamp plate 311 further drives punching knife 313 and pushes down again, and accomplish punching a hole to zipper belt with brace table 32 cooperation, elastic connection's first clamp plate 311 and second clamp plate 312 can play certain cushioning effect, avoid producing violent rigid impact and influence punching knife 313's life.

In this embodiment, the punching blade 313 is two symmetrically disposed blades, and the punching blade 313 includes a cross-shaped blade 3131 and a plurality of circular blades 3132 on both sides of the cross-shaped blade 3131. Wherein, the setting of cross cutting edge 3131 is for blanking out a breach in glue film department, makes things convenient for the moulding plastics of follow-up zip fastener head and the cutting off of zip fastener strip, and the setting of circular cutting edge 3132 is for blanking out a plurality of circular through-holes in glue film department, improves follow-up intensity and the stability of zip fastener head after moulding plastics.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (10)

1. The utility model provides a zip fastener double-end piercing press, its characterized in that includes the board and sets up on the board:

the zipper guide mechanism comprises a zipper guide unit and a traction unit, wherein the zipper guide unit is used for conveying zipper strips, and the traction unit is used for pulling the zipper strips with the sizing holes;

the punching mechanism is used for simultaneously punching two ends of the zipper belt;

the positioning mechanism comprises a first positioning unit and a second positioning unit, the first positioning unit is used for positioning the left end of the sizing hole, the second positioning unit is used for positioning the right end of the sizing hole, and the punching mechanism is located between the first positioning unit and the second positioning unit.

2. A zipper double-headed punch machine as claimed in claim 1, wherein the punching mechanism comprises a punching die, a support table through which a zipper tape passes on an upper surface of the support table, and a punch driving member for driving the punching die closer to or away from the support table.

3. The zipper double-head punching machine according to claim 2, wherein the first positioning unit comprises a first mounting table and a first crochet hook component, the first mounting table is positioned at the left side of the supporting table, and the first crochet hook component is movably arranged at the left end of the first mounting table and can be used for hooking the sizing hole.

4. The zipper double-headed punch machine according to claim 3, wherein the first looper assembly includes a first looper and a first driving member, the first driving member being mounted on the first mounting table through a first fixing base, the first driving member being adapted to drive the first looper toward or away from the zipper tape.

5. The zipper double-head punching machine according to claim 4, wherein the first crochet hook assembly further comprises a fixture block, an inductive switch and a limiting member, the fixture block is fixed at an end portion of the first crochet hook, and the first crochet hook is elastically connected with the first fixed seat and can slide relative to the first fixed seat in a conveying direction of the zipper tape;

the fixture block can trigger the inductive switch, and when the inductive switch is triggered, the limiting part is used for limiting the fixture block and avoiding the rebounding of the first crochet hook.

6. The zipper double-head punching machine according to claim 2, wherein the second positioning unit comprises a second mounting table, a second crochet hook assembly and a press belt assembly, the second mounting table is located at the right side of the supporting table, and the second crochet hook assembly is movably arranged at the second mounting table; the pressing belt component can be used for pressing the zipper belt to enable the second crochet hook component to hook the right end of the sizing hole.

7. The zipper double-headed punch machine according to claim 6, wherein the second looper assembly includes a second looper and a second driving member, the second driving member being mounted on the second mounting table through a second fixing base, the second driving member being adapted to drive the second looper toward or away from the zipper tape.

8. The zipper double-head punching machine according to claim 6, wherein the belt pressing assembly is located between the first positioning unit and the second positioning unit, the belt pressing assembly comprises a belt pressing cylinder and a pressing rod, the belt pressing cylinder is used for driving the pressing rod to be close to or far away from the zipper belt, and the supporting table is provided with a groove matched with the pressing rod.

9. The zipper double-headed punching machine according to claim 2, wherein the punching die comprises a first pressing plate and a second pressing plate which are elastically connected, the first pressing plate is provided with a punching knife, and the punching knife passes through the second pressing plate.

10. The zipper double-headed punching machine according to claim 9, wherein the punching blades are symmetrically arranged, and the punching blades comprise a cross-shaped blade and a plurality of circular blades located at both sides of the cross-shaped blade.

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