Zipper tape pre-expander

Abstract

The utility model discloses a zip fastener tape pre -expanding machine, including frame, pre -expanding conveying device, heat setting device, transfer device, feeding device and sweep material device, feeding device includes feeding mounting bracket, feeding support plate, feeding fixed plate, feeding movable plate and gap adjusting mechanism, feeding fixed plate and feeding movable plate all are from top to bottom inclined setting, and gap adjusting mechanism is used for driving feeding movable plate to be close to or away from feeding fixed plate, and the feeding gap formed is adapted to the thickness of zip fastener tape, sweep material device includes sweep material board and sweep material rotary mechanism, and sweep material rotary mechanism drives sweep material board rotation and makes it with zip fastener tape intermittent contact. The utility model discloses a zip fastener tape pre -expanding machine, and the feeding gap can be adjusted to adapt to zip fastener tape of different thickness, and the self -weight of zip fastener tape and the intermittent contact of sweep material board to zip fastener tape are utilized, ensure that zip fastener is only smoothly discharged, avoid the need of manual operation, and improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of zipper tape processing equipment, and in particular to a zipper tape pre-expansion machine. Background Technology

[0002] Zipper tape includes a metal zipper and a zipper fabric body connected to both sides of the metal zipper. The metal zipper has a zipper head. Zipper tape is usually straight after manufacturing. A straight zipper tape can easily cause clothing to bunch up and the zipper to be difficult to open and close during use. In the prior art, straight zipper tape needs to be pre-expanded and shaped using a zipper tape pre-expansion machine. The shaped zipper tape has an inner arc characteristic, and the inner arc of the zipper tape is not easily deformed, improving the quality of the zipper tape and preventing it from bunching up during use. For example, Chinese utility model patent CN216907070U discloses a zipper tape pre-expansion machine, including a worktable, a feeding device, a transmission roller device, a heat setting device, and a discharge device. The feeding device includes a storage hopper, a feeding belt, a pulley, and a feeding motor. The storage hopper has an outlet groove and a strip-shaped opening. However, in actual use, the zipper tape pre-expansion machine suffers from several problems. These include the fixed width of the slot, excessive friction between the zipper tape and the slot, and deformation of the zipper tape due to external forces. As a result, the zipper tape is not fed smoothly and requires manual operation, leading to low work efficiency. Utility Model Content

[0003] The purpose of this invention is to design a zipper tape pre-expansion machine to overcome the shortcomings of the above-mentioned technology. The feeding gap can be adjusted to adapt to zipper tapes of different thicknesses. By utilizing the self-weight of the zipper tape and the intermittent contact of the sweeping plate with the zipper tape, the machine ensures smooth feeding of the zipper tape, avoids the need for manual operation, and improves work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a zipper tape pre-expansion machine, including a frame, a pre-expansion conveying device, and a heat-setting device. A worktable is provided on the frame, and the pre-expansion conveying device is located on the top surface of the worktable. The pre-expansion conveying device includes at least two sets of conveying drive components. Each conveying drive component includes two vertically spaced transmission rollers and a transmission rotation mechanism. The rotating end of the transmission rotation mechanism is provided with a transmission mechanism for synchronously rotating the two transmission rollers. The two vertically spaced transmission rollers respectively abut against the upper and lower sides of the zipper tape to convey the zipper tape forward, and the speed of the transmission roller in front is greater than the speed of the transmission roller in the rear. The heat-setting device is located on the worktable and between two adjacent sets of conveying drive components. The heat-setting device is used to heat and set the zipper tape conveyed between the two adjacent sets of conveying drive components.

[0005] It also includes a transfer device, and a feeding device and a sweeping device arranged vertically. The feeding device is set on the top surface of the workbench. The feeding device includes a feeding mounting frame, a feeding support plate, a feeding fixed plate and a feeding movable plate arranged in parallel and at intervals, and a gap adjustment mechanism. The feeding mounting frame is fixedly connected to the frame. The feeding support plate is vertically arranged. The feeding support plate and the feeding fixed plate are both fixedly connected to the feeding mounting frame. The feeding fixed plate and the feeding movable plate are both inclined from top to bottom. The gap adjustment mechanism is used to drive the feeding movable plate to move closer to or away from the feeding fixed plate. The feeding gap formed between the opposite sides of the feeding movable plate and the feeding fixed plate is adapted to the thickness of the zipper tape so that the zipper tape is in a vertical state and the zipper head at the top of the zipper tape is located above the feeding gap. The transfer device is close to the lower side of the feeding gap. The transfer device is used to transfer the zipper tape on the lower side of the feeding gap to the pre-expansion conveyor.

[0006] The sweeping device is disposed on the bottom surface of the workbench. The sweeping device includes a sweeping plate and a sweeping rotation mechanism. The sweeping plate extends along the length direction of the feeding support plate. The sweeping rotation mechanism drives the sweeping plate to rotate so that it makes intermittent contact with the zipper belt.

[0007] Preferably, the transfer device includes a first transfer translation mechanism, a second transfer translation mechanism, a transfer rotation mechanism, and a transfer clamping mechanism. The transfer clamping mechanism is used to clamp the zipper tape. The transfer clamping mechanism is disposed on the rotation end of the transfer rotation mechanism, the transfer rotation mechanism is disposed on the translation end of the second transfer translation mechanism, and the second transfer translation mechanism is disposed on the translation end of the first transfer translation mechanism. This allows the first transfer translation mechanism and the second transfer translation mechanism to adjust the position of the transfer clamping mechanism in the horizontal and vertical directions. The transfer clamping mechanism reciprocates between the feeding device and the pre-expansion conveying device.

[0008] Preferably, the gap adjustment mechanism includes an adjustment rod and an adjustment nut. The adjustment rod is a screw structure, and the adjustment nut is sleeved with the adjustment rod and threadedly engaged. An adjustment seat is provided at the bottom of the feeding movable plate, and the adjustment seat is fixedly connected to the adjustment nut.

[0009] Preferably, the frame is provided with a baffle frame, the top surface of the baffle frame is clearance-fitted with the outer side of the feeding movable plate, and at least one guide plate is provided on the top surface of the baffle frame, the guide plate extends inward, and the guide plate is in abutting fit or clearance fit with the feeding movable plate.

[0010] Preferably, there are two gap adjustment mechanisms, which are located on the higher and lower sides of the baffle frame, respectively. A front support frame and a rear support frame are respectively provided on the worktable relative to the higher and lower sides of the baffle frame. One adjustment rod is rotatably connected between the baffle frame and the front support frame, and the other adjustment rod is rotatably connected between the baffle frame and the rear support frame.

[0011] Preferably, either of the two adjusting rods is provided with an operating end, which extends to the outside of the baffle frame and is provided with an operating handle.

[0012] Preferably, both the upper part of the fixed feeding plate and the upper part of the movable feeding plate are provided with bent feeding plates. The feeding plates are vertically arranged, and the opposite sides of the feeding plates of the fixed feeding plate and the movable feeding plate are inclined to form a V-shaped guide inlet.

[0013] Preferably, both the upper part of the feeding fixed plate and the upper part of the feeding movable plate are provided with a bent and formed discharge plate. The discharge plate is horizontally arranged, and a discharge gap adapted to the thickness of the zipper tape is formed between the opposite sides of the discharge plate of the feeding fixed plate and the discharge plate of the feeding movable plate.

[0014] Preferably, the workbench is provided with a clearance space through it relative to the feeding device.

[0015] Preferably, the workbench is provided with a telescopic material stop mechanism and a telescopic material blocking mechanism at intervals near the clearance space. The telescopic material stop mechanism is arranged opposite to the feeding support plate, and the telescopic end of the telescopic material stop mechanism cooperates with the feeding support plate to clamp the zipper belt located in the feeding gap. The telescopic material blocking mechanism is inclined towards the discharge gap, and the telescopic end of the telescopic material blocking mechanism is used to cover the opening side of the discharge gap so that the zipper belt stops at the discharge gap.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By adjusting the distance between the feeding movable plate and the feeding fixed plate, the feeding gap is made compatible with the thickness of the zipper tape. This allows the zipper tape to be placed vertically on the higher side of the feeding gap, with only a single zipper tape passing through at a time. The zipper head is positioned above the feeding gap. The sweeping device intermittently contacts the zipper tape through the sweeping plate to prevent the zipper tape from getting stuck in the feeding gap, allowing several zipper tapes to slide down the feeding gap from top to bottom. The transfer device is used to transfer the tapes from the lower side of the feeding gap. The zipper tape is transferred to the pre-expansion conveyor, which gradually tightens the zipper tape through multiple sets of conveyor drive components to achieve pre-expansion of the zipper tape. At the same time, the heat setting device heats and sets the zipper tape. After the zipper tape cools, it forms an inner arc feature. The feeding gap of this zipper tape pre-expansion machine can be adjusted to adapt to zipper tapes of different thicknesses. By utilizing the weight of the zipper tape and the intermittent contact of the sweeping plate with the zipper tape, the machine ensures smooth feeding of the zipper tape, avoids the need for manual operation, and improves work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the zipper tape pre-expansion machine in the embodiment.

[0019] Figure 2 This is a schematic diagram of the structure of the zipper belt pre-expansion machine after the protective cover is removed in the embodiment.

[0020] Figure 3 This is a schematic diagram of the structure of the feeding device and the sweeping device in the embodiment. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the structure of the feeding device and the sweeping device in the embodiment. Figure 2 .

[0022] Figure 5 This is a cross-sectional view of the feeding device and the sweeping device in the embodiment. Figure 1 .

[0023] Figure 6 This is a cross-sectional view of the feeding device and the sweeping device in the embodiment. Figure 2 .

[0024] Figure 7 This is a schematic diagram of the feeding device in the embodiment.

[0025] Figure 8 This is a schematic diagram of the transfer device in the embodiment.

[0026] In the diagram: 1. Frame; 101. Workbench; 102. Baffle frame; 103. Guide plate; 104. Front support frame; 105. Rear support frame; 106. Clearance space; 107. Telescopic material stop mechanism; 108. Telescopic material stop mechanism; 109. Sensing device; 110. Controller; 111. Protective cover; 2. Pre-expansion conveying device; 21. Drive roller; 22. Drive rotation mechanism; 201. Drive mechanism; 3. Heat setting device; 4. Transfer device; 41. First transfer translation mechanism; 42. Second transfer translation mechanism; 43. Transfer rotation 44. Transfer and clamping mechanism; 5. Feeding device; 51. Feeding mounting frame; 52. Feeding support plate; 53. Feeding fixed plate; 54. Feeding movable plate; 55. Gap adjustment mechanism; 551. Adjusting rod; 552. Adjusting nut; 501. Feeding gap; 502. Adjusting seat; 503. Operating handle; 504. Feeding plate; 505. Guide feed inlet; 506. Discharge plate; 507. Discharge gap; 6. Sweeping device; 61. Sweeping plate; 62. Sweeping rotation mechanism; 601. Brush; 7. Discharge channel; 701. Discharge gap. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] refer to Figures 1 to 8 A zipper tape pre-expansion machine includes a frame 1, two pre-expansion conveying devices 2, two heat-setting devices 3, a feeding device 5, two sweeping devices 6, a transfer device 4, and a controller 110. The pre-expansion conveying devices 2, heat-setting devices 3, sweeping devices 6, and transfer device 4 are all connected to and controlled by the controller 110. The frame 1 is equipped with a workbench 101. The two pre-expansion conveying devices 2, two heat-setting devices 3, and two sweeping devices 6 are all arranged opposite each other with the feeding device 5 as the center, enabling the zipper tape pre-expansion machine to meet the requirements of dual-station processing.

[0029] The feeding device 5 is set on the top surface of the workbench 101. The feeding device 5 includes a feeding mounting frame 51, a feeding support plate 52, a feeding fixing plate 53, two feeding movable plates 54 and four gap adjustment mechanisms 55. The feeding mounting frame 51 is fixedly connected to the frame 1. The feeding support plate 52 is set vertically. The feeding support plate 52 and the feeding fixing plate 53 are both fixedly connected to the feeding mounting frame 51. The feeding fixing plate 53 and the feeding movable plate 54 are both set inclined from top to bottom. The two feeding movable plates 54 are set opposite each other with the feeding fixing plate 53 as the center. Furthermore, the adjacent feeding movable plates 54 and feeding fixing plates 53 are parallel and spaced apart.

[0030] A baffle frame 102 is arranged opposite to the frame 1. The outer side of the feeding movable plate 54 is bent downward. The top surface of the baffle frame 102 is clearance-fitted with the outer side of the feeding movable plate 54. A guide plate 103 is arranged on the top surface of the baffle frame 102. The guide plate 103 extends inward. The top surface of the guide plate 103 is clearance-fitted with the outer side of the feeding movable plate 54.

[0031] Four gap adjustment mechanisms 55 are respectively arranged in pairs on two baffle frames 102, with the two gap adjustment mechanisms 55 located on the higher and lower sides of the baffle frames 102 respectively. Each gap adjustment mechanism 55 includes an adjustment rod 551 and an adjustment nut 552. The adjustment rod 551 is a screw structure. A front support frame 104 and a rear support frame 105 are respectively arranged on the worktable 101 relative to the higher and lower sides of the baffle frames 102. One adjustment rod 551 is rotatably connected between the baffle frame 102 and the front support frame 104, and the other adjustment rod 551 is rotatably connected between the baffle frame 102 and the rear support frame 105. The adjustment nut 552 is sleeved with the adjustment rod 551 and threadedly engaged. An adjustment seat 502 is provided at the bottom of the feeding movable plate 54, and the adjustment seat 502 is fixedly connected to the adjustment nut 552.

[0032] The adjusting rod 551 located at the rear support frame 105 is provided with an operating end. The operating end extends to the outside of the baffle frame 102 and is provided with an operating handle 503. The two adjusting rods 551 arranged on the same side are connected by a synchronous belt drive. Only one operating handle 503 is needed to drive the corresponding adjusting rod 551 to rotate. The corresponding adjusting rod 551 drives the other adjusting rod 551 to rotate synchronously through the synchronous belt drive. This causes the two adjusting nuts 552 arranged on the same side to move synchronously along the axial direction of the adjusting rod 551. The two adjusting seats 502 move synchronously to drive the feeding movable plate 54 to move closer to or away from the feeding fixed plate 53, thereby changing the distance between the feeding movable plate 54 and the feeding fixed plate 53.

[0033] The feeding gap 501 formed between the opposite sides of the feeding movable plate 54 and the feeding fixed plate 53 is adapted to the thickness of the zipper tape so that the zipper tape can be placed vertically on the higher side of the feeding gap 501. The feeding gap 501 allows only a single zipper tape to pass through. The zipper head at the top of the zipper tape is located above the feeding gap 501, while the bottom of the zipper tape is located in the space between the feeding support plate 52, the feeding fixed plate 53, the corresponding feeding movable plate 54, and the baffle frame 102. The workbench 101 is provided with a clearance space 106 through which the zipper tape can pass relative to the feeding device 5.

[0034] Both the upper part of the feeding fixed plate 53 and the upper part of the feeding movable plate 54 are provided with bent feeding plates 504. The feeding plates 504 are vertically arranged. The opposite sides of the feeding plates 504 of the feeding fixed plate 53 and the feeding plates 504 of the feeding movable plate 54 are relatively inclined to form a V-shaped guide inlet 505, thereby guiding the zipper tape placed on the higher side of the feeding gap 501 so that it can smoothly enter the feeding gap 501.

[0035] The sweeping device 6 is disposed on the bottom surface of the workbench 101. The sweeping device 6 includes a sweeping plate 61 and a sweeping rotation mechanism 62. The sweeping plate 61 extends along the length of the feeding support plate 52. The sweeping rotation mechanism 62 is a rotary motor. The sweeping plate 61 is pivotally connected to the frame 1. The sweeping plate 61 and the sweeping rotation mechanism 62 are spaced apart and are connected by a synchronous belt drive. The sweeping rotation mechanism 62 drives the sweeping plate 61 to rotate so that it makes intermittent contact with the zipper belt, so that the zipper belt is kept vertical. The sweeping device 6 prevents the zipper belt from getting stuck in the feeding gap 501 by intermittently contacting the zipper belt with the sweeping plate 61, so that several zipper belts slide down from top to bottom along the feeding gap 501 to the lower side of the feeding gap 501. Preferably, the outer side of the sweeping plate 61 can be a brush 601, so that the sweeping plate 61 cleans the zipper belt when it comes into contact with it.

[0036] The feeding gap 501 of the zipper tape pre-expansion machine can be adjusted to accommodate zipper tapes of different thicknesses. By utilizing the weight of the zipper tape and the intermittent contact of the sweeping plate 61 with the zipper tape, the machine ensures smooth feeding of the zipper tape, avoids the need for manual operation, and improves work efficiency.

[0037] Preferably, the frame 1 is covered with two protective covers 111 arranged opposite to each other, with openings on opposite sides of the two protective covers 111, which are used to protect the pre-expansion conveying device 2.

[0038] Preferably, both the upper part of the feeding fixed plate 53 and the upper part of the feeding movable plate 54 are provided with bent and formed discharge plates 506. The discharge plates 506 are horizontally arranged, and a discharge gap 507 adapted to the thickness of the zipper tape is formed between the opposite sides of the discharge plates 506 of the feeding fixed plate 53 and the discharge plates 506 of the feeding movable plate 54. A telescopic material stop mechanism 107 and a telescopic material blocking mechanism 108 are provided at intervals near the clearance space 106 on the workbench 101. All telescopic stop mechanisms 108 are telescopic cylinders. The telescopic stop mechanism 107 is arranged opposite to the feeding support plate 52. The telescopic end of the telescopic stop mechanism 107 cooperates with the feeding support plate 52 to clamp the zipper belt located in the feeding gap 501. The telescopic stop mechanism 108 is inclined towards the discharge gap 507. The telescopic end of the telescopic stop mechanism 108 is used to cover the opening side of the discharge gap 507 so that the zipper belt stops at the discharge gap 507 and prevents the zipper belt from detaching from the feeding device 5.

[0039] Preferably, a sensing device 109 for sensing the zipper tape is provided between the telescopic stop mechanism 107 and the telescopic stop mechanism 108. The telescopic stop mechanism 107, the telescopic stop mechanism 108, and the sensing device 109 are all connected to and controlled by the controller 110. The sensing device 109 can be a metal sensor or a through-beam laser sensor. When the sensing device 109 senses the zipper tape, the telescopic end of the telescopic stop mechanism 107 extends to clamp and position the zipper tape located on the lower side of the feeding gap 501.

[0040] The transfer device 4 includes a first transfer translation mechanism 41, a second transfer translation mechanism 42, a transfer rotation mechanism 43, and a transfer clamping mechanism 44. Both the first and second transfer translation mechanisms 41 and 42 are electric slides or electric push rods. The transfer clamping mechanism 44 can be a pneumatic gripper, and the transfer rotation mechanism 43 can be a rotary motor or a tilting cylinder. The transfer clamping mechanism 44 is used to clamp the zipper tape. The transfer clamping mechanism 44 is located on the rotating end of the transfer rotation mechanism 43, the transfer rotation mechanism 43 is located on the translation end of the second transfer translation mechanism 42, and the second transfer translation mechanism 42 is located on the translation end of the first transfer translation mechanism 41. The first and second transfer translation mechanisms 41 and 42 adjust the position of the transfer clamping mechanism 44 in the horizontal and vertical directions, and the transfer clamping mechanism 44 reciprocates between the feeding device 5 and the pre-expansion conveying device 2. When the transfer clamping mechanism 44 moves to the feeding device 5, the transfer rotating mechanism 43 drives the transfer clamping mechanism 44 to rotate, so that the transfer device 4 clamps and transfers the zipper belt on the lower side of the feeding gap 501 to the pre-expansion conveyor 2 through the transfer clamping mechanism 44. When the transfer clamping mechanism 44 moves to the feeding device 5, the transfer rotating mechanism 43 drives the transfer clamping mechanism 44 to rotate, so that the transfer clamping mechanism 44 drives the zipper belt into the feed inlet of the pre-expansion conveyor 2.

[0041] The pre-expansion conveying device 2 is installed on the top surface of the workbench 101. The pre-expansion conveying device 2 includes four sets of conveying drive components. The four sets of conveying drive components are arranged opposite each other and spaced apart. The conveying drive components include two transmission rollers 21 arranged vertically and horizontally, and a transmission rotation mechanism 22. The transmission rotation mechanism 22 is a rotary motor. The rotating end of the transmission rotation mechanism 22 is provided with a transmission mechanism 201 for synchronously rotating the two transmission rollers 21. The transmission mechanism 201 can adopt a gear transmission method or a synchronous belt transmission method. The two transmission rollers 21 arranged vertically and horizontally abut against the upper and lower sides of the zipper belt to convey the zipper belt forward. The speed of the transmission roller 21 in front is greater than the speed of the transmission roller 21 in the back. The heat setting device 3 is a hot steam nozzle or a hot drying gun. The heat setting device 3 is installed on the workbench 101 and located between two adjacent sets of conveying drive components. The heat setting device 3 is used to heat and set the zipper belt conveyed between the two adjacent sets of conveying drive components. The pre-expansion conveying device 2 and the heat-setting device 3 can be referenced from the transmission roller 21 device and the heat-setting device 3 in the patent CN216907070U. The pre-expansion conveying device 2 gradually tightens the zipper belt through multiple sets of conveying drive components to achieve the pre-expansion of the zipper belt. At the same time, the heat-setting device 3 heats and sets the zipper belt. After the zipper belt cools down, it can form an inner arc feature.

[0042] Preferably, the discharge side of the pre-expansion conveyor 2 is provided with a discharge channel 7 for guiding the output of the zipper belt. The discharge channel 7 is provided with a discharge gap 701, which is adapted to the thickness of the zipper belt.

[0043] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A zipper tape pre-expansion machine, comprising a frame (1), a pre-expansion conveying device (2), and a heat setting device (3), wherein a workbench (101) is provided on the frame (1), the pre-expansion conveying device (2) is disposed on the top surface of the workbench (101), the pre-expansion conveying device (2) comprises at least two sets of conveying drive components, the conveying drive components comprising two transmission rollers (21) arranged vertically at intervals, and a transmission rotation mechanism (22), wherein the rotating end of the transmission rotation mechanism (22) is provided with a means for linkage of the two transmission rollers. The transmission mechanism (201) with the rollers (21) rotating synchronously has two transmission rollers (21) arranged at intervals above and below each other, which abut against the upper and lower sides of the zipper belt to convey the zipper belt forward. The speed of the transmission roller (21) located in front is greater than the speed of the transmission roller (21) located behind. The heat setting device (3) is set on the worktable (101) and located between two adjacent sets of conveying drive components. The heat setting device (3) is used to heat and set the zipper belt conveyed between the two adjacent sets of conveying drive components. characterized in that It also includes a transfer device (4), and a feeding device (5) and a sweeping device (6) arranged vertically. The feeding device (5) is set on the top surface of the workbench (101). The feeding device (5) includes a feeding mounting frame (51), a feeding support plate (52), a feeding fixed plate (53) and a feeding movable plate (54) arranged in parallel and at intervals, and a gap adjustment mechanism (55). The feeding mounting frame (51) is fixedly connected to the frame (1). The feeding support plate (52) is vertically arranged. The feeding support plate (52) and the feeding fixed plate (53) are both fixedly connected to the feeding mounting frame (51). The feeding fixed plate (53) Both the loading movable plate (54) and the loading fixed plate (53) are inclined from top to bottom. The gap adjustment mechanism (55) is used to drive the loading movable plate (54) to move closer to or away from the loading fixed plate (53). The loading gap (501) formed between the opposite sides of the loading movable plate (54) and the loading fixed plate (53) is adapted to the thickness of the zipper tape so that the zipper tape is in a vertical state and the zipper head at the top of the zipper tape is located above the loading gap (501). The transfer device (4) is close to the lower side of the loading gap (501). The transfer device (4) is used to transfer the zipper tape on the lower side of the loading gap (501) to the pre-expansion conveyor (2). The sweeping device (6) is disposed on the bottom surface of the workbench (101). The sweeping device (6) includes a sweeping plate (61) and a sweeping rotation mechanism (62). The sweeping plate (61) extends along the length direction of the feeding support plate (52). The sweeping rotation mechanism (62) drives the sweeping plate (61) to rotate so that it makes intermittent contact with the zipper tape.

2. A pre-expander for a slide fastener tape according to claim 1, wherein It also includes the following: the transfer device (4) includes a first transfer translation mechanism (41), a second transfer translation mechanism (42), a transfer rotation mechanism (43), and a transfer clamping mechanism (44). The transfer clamping mechanism (44) is used to clamp the zipper tape. The transfer clamping mechanism (44) is disposed on the rotation end of the transfer rotation mechanism (43). The transfer rotation mechanism (43) is disposed on the translation end of the second transfer translation mechanism (42). The second transfer translation mechanism (42) is disposed on the translation end of the first transfer translation mechanism (41). This allows the first transfer translation mechanism (41) and the second transfer translation mechanism (42) to adjust the position of the transfer clamping mechanism (44) in the horizontal and vertical directions. The transfer clamping mechanism (44) reciprocates between the feeding device (5) and the pre-expansion conveying device (2).

3. The zipper tape pre-expansion machine according to claim 1, characterized in that, The gap adjustment mechanism (55) includes an adjustment rod (551) and an adjustment nut (552). The adjustment rod (551) is a screw structure. The adjustment nut (552) is sleeved with the adjustment rod (551) and threadedly engaged. An adjustment seat (502) is provided at the bottom of the feeding movable plate (54). The adjustment seat (502) is fixedly connected to the adjustment nut (552).

4. A zipper tape pre-expansion machine according to claim 3, characterized in that, A baffle frame (102) is provided on the frame (1). The top surface of the baffle frame (102) is in clearance fit with the outer side of the feeding movable plate (54). At least one guide plate (103) is provided on the top surface of the baffle frame (102). The guide plate (103) extends inward and is in contact with or in clearance fit with the feeding movable plate (54).

5. A zipper tape pre-expansion machine according to claim 4, characterized in that, Two gap adjustment mechanisms (55) are provided, and the two gap adjustment mechanisms (55) are respectively located on the higher side and the lower side of the baffle frame (102). The worktable (101) is provided with a front support frame (104) and a rear support frame (105) respectively on the higher side and the lower side of the baffle frame (102). One of the adjustment rods (551) is rotatably connected between the baffle frame (102) and the front support frame (104), and the other adjustment rod (551) is rotatably connected between the baffle frame (102) and the rear support frame (105).

6. A zipper tape pre-expansion machine according to claim 5, characterized in that, Either of the two adjusting rods (551) is provided with an operating end, which extends to the outside of the baffle frame (102) and is provided with an operating handle (503).

7. A zipper tape pre-expansion machine according to claim 1, characterized in that, The upper part of the feeding fixed plate (53) and the upper part of the feeding movable plate (54) are both provided with a bent feeding plate (504). The feeding plate (504) is vertically arranged. The feeding plate (504) of the feeding fixed plate (53) and the feeding plate (504) of the feeding movable plate (54) are relatively inclined to form a V-shaped guide inlet (505).

8. A zipper tape pre-expansion machine according to claim 1, characterized in that, Both the upper part of the feeding fixed plate (53) and the upper part of the feeding movable plate (54) are provided with a bent discharge plate (506). The discharge plate (506) is horizontally arranged, and a discharge gap (507) adapted to the thickness of the zipper tape is formed between the opposite sides of the discharge plate (506) of the feeding fixed plate (53) and the discharge plate (506) of the feeding movable plate (54).

9. A zipper tape pre-expansion machine according to claim 8, characterized in that, The workbench (101) has a clearance space (106) that extends through it relative to the feeding device (5).

10. A zipper tape pre-expansion machine according to claim 9, characterized in that, The workbench (101) is provided with a telescopic stopping mechanism (107) and a telescopic blocking mechanism (108) at intervals near the clearance space (106). The telescopic stopping mechanism (107) is arranged opposite to the feeding support plate (52). The telescopic end of the telescopic stopping mechanism (107) cooperates with the feeding support plate (52) to clamp the zipper belt located in the feeding gap (501). The telescopic blocking mechanism (108) is inclined towards the discharge gap (507). The telescopic end of the telescopic blocking mechanism (108) is used to cover the opening side of the discharge gap (507) so that the zipper belt stops at the discharge gap (507).

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