Zipper tape pre-expander

Abstract

The utility model relates to zip fastener tape production technical field especially is a zip fastener tape pre -expanding machine, including frame, the upper end of frame is provided with the feeding platform, the one end of feeding platform is provided with the mounting platform below its upper end surface, the adjacent end of feeding platform and mounting platform is provided with the feeding mechanism, the junction of feeding platform and mounting platform is provided with heating assembly, the end of feeding mechanism is above this heating assembly, the both sides of end of feeding mechanism are provided with pre -expanding component, pre -expanding component includes a group of symmetrical pre -expanding department setting, the utility model through spacing adjusting assembly is to the spacing of both sides pre -expanding department carries out the flexible adjustment, and the control of the compression wheel group pressure of clamping adjusting assembly is combined, can adapt to different width, the thickness specification zip fastener tape, need not to replace the equipment or a large number of adjustment mechanical structure to realize the pre -expanding processing of many types of products, has improved the versatility and the scope of application of equipment significantly.

Description

Technical Field

[0001] This utility model relates to the field of zipper tape production technology, specifically a zipper tape pre-expansion machine. Background Technology

[0002] The zipper belt is straight after it is manufactured in the factory. A straight zipper is prone to causing clothes to bunch up and the zipper to be difficult to open and close. The zipper needs to be pre-expanded to give the zipper belt a certain inner curve. Existing technology uses zipper forming equipment to pre-expand and shape the zipper. The shaped zipper has an inner curve characteristic, and the inner curve of the zipper is not easy to deform, which improves the quality of the zipper and prevents the zipper from arching during use.

[0003] A search revealed Chinese invention patent application number 202411816262.5, which discloses a zipper tape pre-expansion device. The device includes a workbench, a feeding device and a pre-expansion device mounted on the workbench, and a feeding device located below the workbench. The pre-expansion device consists of a front pressure roller group and a rear pressure roller group, with the speed of the front pressure roller group being greater than that of the rear pressure roller group. The zipper tape is conveyed from the rear pressure roller group towards the front pressure roller group. The front pressure roller group includes a front upper pressure roller and a front lower pressure roller arranged vertically opposite each other and rolling synchronously. The rear pressure roller group includes a rear upper pressure roller and a rear lower pressure roller arranged vertically opposite each other and rolling synchronously. The front upper pressure roller and the front lower pressure roller... The gap between the front and rear upper pressure rollers and the gap between the rear and lower pressure rollers constitute the pre-expansion channel of the zipper tape. The front and rear upper pressure rollers abut against the upper surface of the zipper tape, and the front and rear lower pressure rollers abut against the lower surface of the zipper tape. This device, by setting a heating and shaping device below the conveyor belt, ensures that the zipper tape receives sufficient heating time, and the conveyor belt prevents the zipper tape from deforming while heating. The zipper tape is conveyed forward while being heated, allowing the zipper tape fabric fibers to fully expand and maintain a stable shape. However, the applicant found that the spacing of the pre-expansion device cannot be adjusted during use, and it cannot adapt to the pre-expansion processing of zipper tapes of various sizes.

[0004] Therefore, a zipper tape pre-expansion machine is needed to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a zipper tape pre-expansion machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A zipper tape pre-expansion machine includes a frame, a feeding platform at the upper end of the frame, an installation platform at one end of the feeding platform that is lower than its upper surface, a feeding mechanism at the adjacent end of the feeding platform and the installation platform, a heating component at the connection between the feeding platform and the installation platform, the end of the feeding mechanism being above the heating component, and pre-expansion components on both sides of the end of the feeding mechanism. Each pre-expansion component includes a set of symmetrically arranged pre-expansion parts, the lower ends of the pre-expansion parts on both sides being connected to sliding adjustment components, and a spacing adjustment component being provided between the sliding adjustment components on both sides. Under the action of the spacing adjustment component, the spacing between the pre-expansion parts on both sides is adjusted to adapt to the pre-expansion requirements of zipper tapes of different sizes.

[0008] The pre-expansion section is equipped with a front pressure roller group and a rear pressure roller group. The front pressure roller group and the rear pressure roller group are connected to the drive unit through a transmission component. The pre-expansion section is equipped with a clamping adjustment component to realize the clamping adjustment of the pressure roller group.

[0009] As a preferred embodiment of this utility model, the pre-expansion section includes a mounting frame, and a front pressure roller group and a rear pressure roller group are mounted on the sides of two adjacent mounting frames. The front pressure roller group includes a front upper wheel and a front lower wheel, and the rear pressure roller group includes a rear upper wheel and a rear lower wheel. The sides of the front upper wheel and the front lower wheel are respectively fixedly connected to a front upper shaft and a front lower shaft, and the sides of the rear upper wheel and the rear lower wheel are respectively fixedly connected to a rear upper shaft and a rear lower shaft. The front upper shaft and the front lower shaft, as well as the rear upper shaft and the rear lower shaft, are rotatably connected to the mounting frame.

[0010] As a preferred embodiment of this utility model, the transmission assembly includes a shaft a rotatably mounted inside the mounting frame, a set of shafts b, and a set of transmission shafts. The two transmission shafts are located on one side of the front upper shaft and the rear upper shaft, respectively. One end of the shaft a extends through the mounting frame into the interior of the adjacent mounting frame. Gear c, gear b, and gear d are fixedly connected to the shaft a from right to left. Gear c meshes with gear a on its side. Gear a is engaged with a drive motor. The drive motor is fixedly mounted on the outer side of the mounting frame.

[0011] A gear f is fixedly connected to the front lower shaft. Gear f is located above gear b and meshes with gear b. A secondary gear is connected to the side of gear f. The secondary gear meshes with gear h on the front upper shaft. A gear g is fixedly connected to the transmission shaft on one side of the front upper shaft. Gear g meshes with gear h. Gear h is fixedly connected to the outside of the front upper shaft. Gear h meshes with gear g. A gear i is fixedly connected to the outside of the rear lower shaft. A gear j is fixedly connected to the rear upper shaft. Gear j meshes with gear i. A gear k is fixedly connected to the rear upper transmission shaft. Gear k meshes with gear j. A gear l is fixedly connected to the rear upper shaft. Gear l meshes with gear k.

[0012] As a preferred embodiment of this utility model, the clamping adjustment assembly includes a set of adjustment plates. Each adjustment plate has a connecting seat at its lower end. The connecting seat has a set of through holes at its lower end for the front upper shaft and the shaft b located at the front end / rear upper shaft and the shaft b located at the rear end to pass through. The mounting frame has waist-shaped holes on both sides for the front upper shaft / rear upper shaft to pass through. A spring is provided between the side of the adjustment plate and the inner side of the mounting frame. A first cylinder is fixedly installed on one side of the inner side of the mounting frame. Under the action of the output end of the first cylinder, the adjustment plate is pushed, and the connecting seat drives the swing of the front upper shaft / rear upper shaft to perform a downward clamping action.

[0013] As a preferred embodiment of this utility model, a limiting wheel is fixedly connected to one outer end of each of the front upper shaft, rear upper shaft, front lower shaft and rear lower shaft, and a limiting strip is fixedly connected to the outer side of the mounting frame. The limiting strip is located between the front upper shaft and the front lower shaft. A set of limiting grooves is opened on the upper surface of the limiting strip, and a screw hole is opened through the lower end of each limiting groove. A limiting screw is threadedly connected inside the screw hole.

[0014] As a preferred embodiment of this utility model, the sliding adjustment assembly includes a set of adjustment rails a and a plurality of sliding bases that are slidably connected to the adjustment rails a. The plurality of sliding bases are symmetrically arranged and fixedly connected to the bottom ends of the mounting frames on both sides.

[0015] As a preferred embodiment of this utility model, the spacing adjustment component includes a motor mounting bracket installed on one side of the mounting frame. An adjustment motor is fixedly mounted on the upper end of the motor mounting bracket. The output end of the adjustment motor passes through the motor mounting bracket and is engaged with a drive gear. A driven wheel meshes with one side of the drive gear. The driven wheel is rotatably connected to the motor mounting bracket, and a pulley a is connected to the lower end of the driven wheel. A pulley mounting frame is provided on the other side of the mounting frame. A pulley b is installed in the pulley mounting frame. A synchronous belt is provided between pulley a and pulley b. A lower protrusion is provided at the lower end of one side of the mounting frame, which is fixedly connected to the synchronous belt. The mounting frame is adjusted in spacing under the drive of the synchronous belt.

[0016] As a preferred embodiment of this utility model, the feeding mechanism includes a vertical support, and a set of limiting rods fixedly connected to the feeding platform are provided on one side of the lower end of the vertical support, and a conveying groove is formed between the two limiting rods.

[0017] A side connecting strip is fixedly connected to one side of the vertical support, and a horizontal support is fixedly connected to the end of the side connecting strip. An adjustment rail b is connected between the horizontal support and the side of the adjustment rail b. A sliding plate is slidably connected on the adjustment rail b. A second cylinder is installed at the end of the horizontal support. The output end of the second cylinder passes through the end of the horizontal support and engages with the sliding plate. A pressing component is fixedly connected to one side of the sliding plate.

[0018] As a preferred embodiment of this utility model, the clamping assembly includes a double-stroke drive component, which is a third cylinder. The output end of the third cylinder is connected to a connecting plate, and a pressure bar is fixedly connected to the lower end of the connecting plate. A rack is fixedly connected to the lower end of the pressure bar, and a hook is fixedly connected to the front end of the pressure bar.

[0019] As a preferred embodiment of this utility model, the heating assembly includes a bottom frame disposed on the lower surface of the mounting platform, and a heating element is disposed inside the bottom frame.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model allows for flexible adjustment of the spacing between the pre-expanded sections on both sides using a spacing adjustment component, and combines this with a clamping adjustment component to control the clamping of the pressure roller group. It can adapt to zipper tapes of different widths and thicknesses, and can achieve pre-expansion processing of various types of products without changing equipment or making extensive adjustments to the mechanical structure, thus significantly improving the versatility and applicability of the equipment.

[0022] In this invention, the front pressure roller group and the rear pressure roller group work together to achieve synchronous reverse rotation through the transmission component, ensuring that the zipper teeth on both sides are subjected to uniform force during the pre-expansion process, avoiding unilateral offset or deformation. The clamping adjustment component, driven by a cylinder and buffered by a spring, can precisely control the clamping force of the pressure roller group. Combined with the fixing effect of the limit strip and the limit screw, it further ensures the stability of the pressure roller group position, effectively improving the consistency of the pre-expansion size and the forming accuracy.

[0023] In this invention, the feeding mechanism, through the coordinated action of the hook, pressure bar, and rack, can stably clamp and transport the zipper tape. Combined with the pre-softening treatment of the zipper tape by the heating component, the pre-expansion resistance is reduced and the processing time is shortened. The automated linkage between the pre-expansion component and the feeding mechanism realizes continuous operation from feeding and heating to pre-expansion, greatly reducing manual intervention. Compared with traditional semi-automatic equipment, the processing efficiency is significantly improved. Attached Figure Description

[0024] Figure 1 This is a first-view perspective perspective view of the present invention;

[0025] Figure 2 This is a second-view perspective perspective view of the present invention;

[0026] Figure 3 This is a third-person perspective view of the present invention;

[0027] Figure 4 This is a fourth-view perspective view of the present invention;

[0028] Figure 5 This is a fifth-view perspective view of the present invention;

[0029] Figure 6 This utility model Figure 3 Enlarged view of point A in the middle;

[0030] Figure 7 This utility model Figure 5 Enlarged view of point B in the middle;

[0031] Figure 8 This is a schematic diagram of the feeding structure in this utility model.

[0032] In the diagram: 1. Frame; 2. Feeding platform; 3. Mounting platform; 4. Mounting frame; 5. Display screen; 6. Chain drop plate; 7. Adjusting motor; 8. Drive motor; 9. Base frame; 10. Heating element; 11. Gear a; 12. Shaft a; 13. Gear c; 14. Gear d; 15. Gear e; 16. Shaft b; 17. First cylinder; 18. Adjusting plate; 19. Gear f; 20. Transmission shaft; 21. Gear g; 22. Gear h; 23. Front upper wheel; 24. Rear upper wheel; 25. Rear lower wheel; 26. Front lower wheel; 27. Adjusting track a; 28. Sliding base; 29. ​​Rack; 30. Motor mounting bracket; 31. Driven wheel; 32. Pulley a; 33. Synchronous belt; 34. Vertical support; 35. Horizontal support; 36. Adjusting track b; 37. Sliding plate; 38. Second cylinder; 39. Third cylinder; 40. Connecting plate; 41. Pressure strip; 42. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please see Figure 1-8 This utility model provides a technical solution:

[0038] For an example, please refer to... Figure 1 , 2 3, 4, 5, 6, 7, and 8, a zipper tape pre-expansion machine, comprising a frame 1, a feeding platform 2 disposed at the upper end of the frame 1, an installation platform 3 disposed at one end of the feeding platform 2 lower than its upper surface, a feeding mechanism disposed at the adjacent end of the feeding platform 2 and the installation platform 3, a heating component disposed at the connection between the feeding platform 2 and the installation platform 3, the heating component comprising a bottom frame 9 disposed on the lower surface of the installation platform 3, a heating element 10 disposed inside the bottom frame 9, the end of the feeding mechanism being above the heating component, and the two ends of the feeding mechanism being... A pre-expansion assembly is provided on the side, which includes a set of symmetrically arranged pre-expansion sections. The lower ends of the pre-expansion sections on both sides are connected to sliding adjustment components, and a spacing adjustment component is provided between the sliding adjustment components on both sides. Under the action of the spacing adjustment component, the spacing between the pre-expansion sections on both sides is adjusted to meet the pre-expansion requirements of different sized zipper tapes. A front pressure roller group and a rear pressure roller group are provided on the pre-expansion section. The front pressure roller group and the rear pressure roller group are connected to the drive unit through a transmission component. A clamping adjustment component is provided inside the pre-expansion section to realize the clamping adjustment of the pressure roller group.

[0039] The zipper tape pre-expansion machine is mainly composed of core structures such as frame 1, feeding platform 2, mounting platform 3, heating components, feeding mechanism, and pre-expansion components. The basic support structure includes frame 1, which is the basic support frame of the equipment and is used to install and fix various functional components. The feeding platform 2 is set at the upper end of frame 1 and is used to place the zipper tape to be processed and provide a horizontal support surface for conveying the zipper tape. The mounting platform 3 is located at one end of the feeding platform 2, and its upper end is lower than the feeding platform 2. It is used to install the bottom structure of the heating components and pre-expansion components.

[0040] The heating assembly includes a base frame 9, which is fixed to the lower surface of the mounting platform 3 and forms an internal accommodating space. The heating element 10 is disposed inside the base frame 9 and is used to heat and soften the zipper tape conveyed above it, so as to facilitate subsequent pre-expansion molding.

[0041] Please refer to Figure 3 , 4 5 and 6, the pre-expansion section includes a mounting frame 4, and a front pressure roller group and a rear pressure roller group are installed on the sides of two adjacent mounting frames 4. The front pressure roller group includes a front upper wheel 24 and a front lower wheel 27, and the rear pressure roller group includes a rear upper wheel 25 and a rear lower wheel 26. The sides of the front upper wheel 24 and the front lower wheel 27 are respectively fixedly connected to a front upper shaft and a front lower shaft, and the sides of the rear upper wheel 25 and the rear lower wheel 26 are respectively fixedly connected to a rear upper shaft and a rear lower shaft. The front upper shaft and the front lower shaft, and the rear upper shaft and the rear lower shaft are all rotatably connected to the mounting frame 4.

[0042] The pre-expansion section is located on both sides of the end of the feeding mechanism. It is used to pre-expand and shape the heated zipper tape. It is the core functional component of the equipment and includes the pre-expansion section, sliding adjustment component, and spacing adjustment component.

[0043] Please refer to Figure 5 and 6 Each pre-expansion section includes a mounting frame 4, a front pressure roller group, a rear pressure roller group, a transmission component, and a clamping adjustment component. The mounting frame 4 is the mounting base of the pre-expansion section, and the pressure roller group, transmission component, and clamping adjustment component are installed inside. The front pressure roller group includes a front upper roller 24 and a front lower roller 27, which are rotatably connected to the mounting frame 4 through the front upper shaft and the front lower shaft, respectively, and are used to pre-expand and press the front end of the zipper tape.

[0044] Rear pressure roller assembly: includes rear upper roller 25 and rear lower roller 26, which are rotatably connected to the mounting frame 4 via rear upper shaft and rear lower shaft respectively. It is used to pre-expand and press the rear end of the zipper belt, and cooperates with the front pressure roller assembly to achieve continuous pre-expansion.

[0045] The front and rear pressure roller sets work together in conjunction with the gears of the transmission components to ensure that the chain teeth on both sides of the zipper belt are subjected to uniform force and good consistency in pre-expansion dimensions. The fixed design of the limit strip and limit screw further prevents the pressure roller set from shifting and improves the forming accuracy.

[0046] Please refer to Figure 3 , 45 and 6, the transmission assembly includes a shaft a12 rotatably mounted inside the mounting frame 4, a set of shafts b17, and a set of drive shafts 21. Two drive shafts 21 are located on one side of the front upper shaft and the rear upper shaft, respectively. One end of shaft a12 extends through the mounting frame 4 into the interior of an adjacent mounting frame 4. Gears c14, b13, and d15 are fixedly connected to shaft a12 from right to left. Gear a11 meshes with the side of gear c14, and gear a11 engages with a drive motor 8. The drive motor 8 is fixedly mounted on the outer side of the mounting frame 4; front lower... A gear f20 is fixedly connected to the shaft, located above and meshing with gear b13. A secondary gear is connected to the side of gear f20, meshing with gear h23 on the upper front shaft b17. A gear g22 is fixedly connected to the drive shaft 21 on one side of the upper front shaft, meshing with gear h23. A gear h is fixedly connected to the outer side of the upper front shaft, meshing with gear g22. A gear i is fixedly connected to the outer side of the lower rear shaft. A gear j is fixedly connected to the upper rear shaft b17, meshing with gear i. A gear k is fixedly connected to the upper rear drive shaft 21, meshing with gear j. A gear l is fixedly connected to the upper rear shaft, meshing with gear k.

[0047] The transmission assembly includes a drive for the front and rear pressure roller sets to rotate, comprising a shaft a12, a shaft b17, a transmission shaft 21, and a gear set (gears a11, b13, c14, d15, f20, g22, h23, etc.). The drive motor 8 meshes with gear c14 of shaft a12 via gear a11, driving shaft a12 to rotate. Shaft a12 meshes with gear f20 of the lower front shaft via gear b13, driving the lower front wheel 27 to rotate. Simultaneously, gear f20 meshes with gear h23 of shaft b17 via a secondary gear, driving gear g22 of transmission shaft 21 to rotate, which in turn drives gear h of the upper front shaft to rotate, achieving synchronous reverse rotation of the upper front wheel 24 and the lower front wheel 27. The rear pressure roller set is driven by shaft a12 through a similar gear transmission logic, achieving synchronous reverse rotation of the upper rear wheel 25 and the lower rear wheel 26.

[0048] Please refer to Figure 6The clamping adjustment assembly includes a set of adjustment plates 19. Each adjustment plate 19 has a connecting seat at its lower end. The connecting seat has a set of through holes at its lower end for the front upper shaft and the shaft body b17 at the front end / the rear upper shaft and the shaft body b17 at the rear end to pass through. The mounting frame 4 has waist-shaped holes on both sides for the front upper shaft / the rear upper shaft to pass through. A spring is provided between the side of the adjustment plate 19 and the inner side of the mounting frame 4. A first cylinder 18 is fixedly installed on one side of the inner side of the mounting frame 4. Under the action of the output end of the first cylinder 18, the adjustment plate 19 is pushed, and the front upper shaft / the rear upper shaft is driven to swing downward clamping action through the connecting seat. Each front upper shaft, rear upper shaft, front lower shaft and rear lower shaft has a limit wheel fixedly connected to one outer end. A limit strip is fixedly connected to the outer side of the mounting frame 4. The limit strip is located between the front upper shaft and the front lower shaft. A set of limit grooves is provided on the upper part of the limit strip, and a screw hole is provided through the lower end of each limit groove. The screw hole is threadedly connected to a limit screw rod.

[0049] The clamping adjustment assembly is used to adjust the clamping degree of the pressure roller group, including an adjustment plate 19, a connecting seat, a spring, a first cylinder 18, a limit wheel, a limit strip, and a limit screw; the first cylinder 18 pushes the adjustment plate 19, and the connecting seat drives the front upper shaft / rear upper shaft to move down along the waist-shaped hole of the mounting frame 4, so that the spring is stretched, realizing the clamping of the front upper wheel 24 and the front lower wheel 27, and the rear upper wheel 25 and the rear lower wheel 26; the limit groove of the limit strip cooperates with the limit screw to fix the position of the pressure roller group and ensure the clamping stability.

[0050] Please refer to Figure 5 and 7 The sliding adjustment assembly includes a set of adjustment rails a28 and a plurality of sliding bases 29 that are slidably connected to the adjustment rails a28. The plurality of sliding bases 29 are symmetrically arranged and fixedly connected to the bottom ends of the mounting frames 4 on both sides.

[0051] The sliding adjustment assembly includes an adjustment track a28 and a sliding base 29; the sliding base 29 is fixedly connected to the bottom of the two side mounting frames 4 and slides in cooperation with the adjustment track a28 to provide sliding guidance for the adjustment of the pre-expansion section spacing.

[0052] Please refer to Figure 5 and 7The spacing adjustment component includes a motor mounting bracket 31 installed on the side of a mounting frame 4. An adjustment motor 7 is fixedly installed on the upper end of the motor mounting bracket 31. The output end of the adjustment motor 7 passes through the motor mounting bracket 31 and is engaged with a drive gear. A driven wheel 32 is meshed on one side of the drive gear. The driven wheel 32 is rotatably connected to the motor mounting bracket 31, and a pulley a33 is connected to the lower end of the driven wheel 32. A pulley mounting frame is provided on the side of the mounting frame 4 on the other side. A pulley b is installed in the pulley mounting frame. A synchronous belt 34 is provided between pulley a33 and pulley b. A lower protrusion is provided at the lower end of the mounting frame 4 on one side, which is fixedly connected to the synchronous belt 34. The spacing of the mounting frame 4 is adjusted under the drive of the synchronous belt 34.

[0053] The device is used to adjust the spacing between the pre-expanded sections on both sides to accommodate the pre-expansion requirements of zipper tapes of different widths. It includes a motor mounting bracket 31, an adjusting motor 7, a drive gear, a driven wheel 32, a pulley a33, a pulley b, and a synchronous belt 34. The adjusting motor 7 drives the drive gear to rotate, which in turn drives the driven wheel 32 and the pulley a33 to rotate. The synchronous belt 34 transmits power between the pulley a33 and the pulley b. The mounting frame 4 on one side is fixed to the synchronous belt 34 through a lower protrusion and slides along the adjusting track a28 under the drive of the synchronous belt 34 to realize the adjustment of the spacing between the pre-expanded sections on both sides.

[0054] The spacing adjustment component allows for flexible adjustment of the spacing between the pre-expanded sections on both sides. Combined with the clamping adjustment component, the clamping force of the pressure roller group can be adjusted, making it suitable for zipper tapes of different widths and thicknesses, significantly improving the versatility of the equipment.

[0055] The feeding mechanism includes a vertical support 35, and a set of limiting rods fixedly connected to the feeding platform 2 are provided on one side of the lower end of the vertical support 35. A conveying groove is formed between the two limiting rods. A side connecting strip is fixedly connected to one side of the vertical support 35. A horizontal support 36 is fixedly connected to the end of the side connecting strip. An adjusting track b37 is connected between the horizontal support 36 and the side of the adjusting track b37. A sliding plate 38 is slidably connected on the adjusting track b37. A second cylinder 39 is installed at the end of the horizontal support 36. The output end of the second cylinder 39 passes through the end of the horizontal support 36 and engages with the sliding plate 38. A pressing assembly is fixedly connected to one side of the sliding plate 38. The pressing assembly includes a double-stroke drive component. The double-stroke drive component adopts a third cylinder 40. A connecting plate 41 is connected to the output end of the third cylinder 40. A pressure strip 42 is fixedly connected to the lower end of the connecting plate 41. A rack 30 is fixedly connected to the lower end of the pressure strip 42. A hook is fixedly connected to the front end of the pressure strip 42.

[0056] The feeding mechanism is used to transport the zipper tape from the feeding platform 2 to the heating component and the pre-expansion component. A set of limiting rods is provided at the lower end of the vertical support 35. The limiting rods are fixed to the feeding platform 2 and a conveying groove is formed between the limiting rods to constrain the conveying path of the zipper tape. The horizontal support 36 is fixed to the vertical support 35 through the side connecting strip. A second cylinder 39 is installed at its end. The adjusting rail b37 connects the horizontal support 36 and the sliding plate 38 to realize the horizontal sliding adjustment of the sliding plate 38. The sliding plate 38 is slidably connected to the adjusting rail b37 and is driven by the second cylinder 39 to move along the rail, thereby driving the pressing component to move. The pressing component includes a third cylinder 40 with a two-stage stroke, a connecting plate 41, a pressure strip 42, a rack 30, and a hook. The third cylinder 40 drives the connecting plate 41 to move the pressure strip 42 up and down. The hook is used to lower the end of the zipper tape, and the rack 30 assists in pressing to achieve stable conveying of the zipper tape.

[0057] The working process of the zipper tape pre-expansion machine is as follows:

[0058] Feeding stage: The zipper belt to be processed is placed on the feeding platform 2. The hook of the feeding mechanism limits the end of the zipper belt. The third cylinder 40 drives the pressure bar 42 to press down, and the rack 30 presses the zipper belt tightly. The second cylinder 39 drives the sliding plate 38 to move along the adjusting track b37 to transport the zipper belt to the top of the heating component.

[0059] Heating and softening: The heating element 10 of the heating assembly heats the zipper tape conveyed above it, softening the zipper tape material to facilitate subsequent pre-expansion molding.

[0060] Pre-expansion forming: The softened zipper tape enters the pre-expansion assembly. The front and rear pressure roller groups of the pre-expansion sections on both sides rotate synchronously in opposite directions under the drive of the transmission assembly to pre-expand the zipper teeth on both sides. The clamping adjustment assembly adjusts the clamping degree of the pressure roller group through the first cylinder 18 to ensure the pre-expansion effect. The spacing adjustment assembly adjusts the spacing to the appropriate size by adjusting the synchronous belt 34 driven by the motor 7 according to the width of the zipper tape.

[0061] Continuous processing: The feeding mechanism continuously conveys the zipper belt, and the pre-expansion component continuously heats and pre-expands the zipper belt to complete the entire pre-expansion processing process.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zipper tape pre-expansion machine, comprising a frame (1), a feeding platform (2) provided at the upper end of the frame (1), an installation platform (3) provided at one end of the feeding platform (2) lower than its upper surface, a feeding mechanism provided at the adjacent ends of the feeding platform (2) and the installation platform (3), a heating component provided at the connection between the feeding platform (2) and the installation platform (3), the end of the feeding mechanism being above the heating component, and pre-expansion components provided on both sides of the end of the feeding mechanism, characterized in that: The pre-expansion component includes a set of symmetrically arranged pre-expansion parts. The lower ends of the pre-expansion parts on both sides are connected to a sliding adjustment component. A spacing adjustment component is provided between the sliding adjustment components on both sides. Under the action of the spacing adjustment component, the spacing between the pre-expansion parts on both sides is adjusted to adapt to the pre-expansion requirements of zipper tapes of different sizes. The pre-expansion section is equipped with a front pressure roller group and a rear pressure roller group. The front pressure roller group and the rear pressure roller group are connected to the drive unit through a transmission component. The pre-expansion section is equipped with a clamping adjustment component to realize the clamping adjustment of the pressure roller group.

2. The zipper tape pre-expansion machine according to claim 1, characterized in that: The pre-expansion section includes a mounting frame (4). A front pressure roller group and a rear pressure roller group are installed on the sides of two adjacent mounting frames (4). The front pressure roller group includes a front upper wheel (24) and a front lower wheel (27). The rear pressure roller group includes a rear upper wheel (25) and a rear lower wheel (26). The sides of the front upper wheel (24) and the front lower wheel (27) are respectively fixedly connected to a front upper shaft and a front lower shaft. The sides of the rear upper wheel (25) and the rear lower wheel (26) are respectively fixedly connected to a rear upper shaft and a rear lower shaft. The front upper shaft and the front lower shaft, as well as the rear upper shaft and the rear lower shaft, are rotatably connected to the mounting frame (4).

3. The zipper tape pre-expansion machine according to claim 2, characterized in that: The transmission assembly includes a shaft a (12) rotatably mounted inside the mounting frame (4), a set of shafts b (17) and a set of transmission shafts (21). The two transmission shafts (21) are located on one side of the front upper shaft and the rear upper shaft, respectively. One end of the shaft a (12) extends through the mounting frame (4) to the interior of the adjacent mounting frame (4). Gears c (14), b (13) and d (15) are fixedly connected to the shaft a (12) from right to left. Gear c (14) meshes with gear a (11) on the side of gear c (14). Gear a (11) is engaged with a drive motor (8). The drive motor (8) is fixedly mounted on the outer side of the mounting frame (4). A gear f (20) is fixedly connected to the front lower shaft. The gear f (20) is located above the gear b (13) and meshes with the gear b (13). A secondary gear is connected to the side of the gear f (20). The secondary gear meshes with the gear h (23) on the shaft b (17) located at the front upper part. A gear g (22) is fixedly connected to the transmission shaft (21) located on one side of the front upper shaft. The gear g (22) meshes with the gear h (23). A gear h is fixedly connected to the outside of the front upper shaft. The gear h meshes with the gear g (22). A gear i is fixedly connected to the outside of the rear lower shaft. A gear j is fixedly connected to the shaft b (17) located at the rear upper part. The gear j meshes with the gear i. A gear k is fixedly connected to the transmission shaft (21) at the rear upper part. The gear k meshes with the gear j. A gear l is fixedly connected to the rear upper shaft. The gear l meshes with the gear k.

4. The zipper tape pre-expansion machine according to claim 3, characterized in that: The clamping adjustment assembly includes a set of adjustment plates (19). Each adjustment plate (19) has a connecting seat at its lower end. The connecting seat has a set of through holes at its lower end for the front upper shaft and the shaft body b (17) at the front end / the rear upper shaft and the shaft body b (17) at the rear end to pass through. The mounting frame (4) has waist-shaped holes on both sides for the front upper shaft / the rear upper shaft to pass through. A spring is provided between the side of the adjustment plate (19) and the inner side of the mounting frame (4). A first cylinder (18) is fixedly installed on one side of the inner side of the mounting frame (4). Under the action of the output end of the first cylinder (18), the adjustment plate (19) is pushed, and the front upper shaft / the rear upper shaft is driven to swing downward clamping action through the connecting seat.

5. The zipper tape pre-expansion machine according to claim 4, characterized in that: Each of the front upper shaft, rear upper shaft, front lower shaft and rear lower shaft has a fixed limit wheel at one end of its outer side. The mounting frame (4) has a fixed limit strip at its outer side. The limit strip is located between the front upper shaft and the front lower shaft. A set of limit grooves is provided on the upper part of the limit strip. A screw hole is provided at the lower end of each limit groove. A limit screw is threaded inside the screw hole.

6. The zipper tape pre-expansion machine according to any one of claims 1-5, characterized in that: The sliding adjustment assembly includes a set of adjustment rails a (28) and a plurality of sliding bases (29) that are slidably connected to the adjustment rails a (28). The plurality of sliding bases (29) are symmetrically arranged and fixedly connected to the bottom ends of the mounting frames (4) on both sides respectively.

7. The zipper tape pre-expansion machine according to claim 6, characterized in that: The spacing adjustment assembly includes a motor mounting bracket (31) installed on the side of the mounting frame (4) on one side. An adjustment motor (7) is fixedly installed on the upper end of the motor mounting bracket (31). The output end of the adjustment motor (7) passes through the motor mounting bracket (31) and is engaged with a drive gear. A driven wheel (32) is meshed on one side of the drive gear. The driven wheel (32) is rotatably connected to the motor mounting bracket (31), and a pulley a (33) is connected to the lower end of the driven wheel (32). A pulley mounting frame is provided on the side of the mounting frame (4) on the other side. A pulley b is installed in the pulley mounting frame. A synchronous belt (34) is provided between the pulley a (33) and the pulley b. A lower protrusion is provided at the lower end of the mounting frame (4) on one side, which is fixedly connected to the synchronous belt (34). The mounting frame (4) is adjusted in spacing under the drive of the synchronous belt (34).

8. The zipper tape pre-expansion machine according to claim 6, characterized in that: The feeding mechanism includes a vertical support (35), and a set of limiting rods fixedly connected to the feeding platform (2) is provided on one side of the lower end of the vertical support (35), and a conveying groove is formed between the two limiting rods; A side connecting strip is fixedly connected to one side of the vertical support (35), and a horizontal support (36) is fixedly connected to the end of the side connecting strip. An adjustment rail (37) is connected between the horizontal support (36) and the side of the adjustment rail (37). A sliding plate (38) is slidably connected on the adjustment rail (37). A second cylinder (39) is installed at the end of the horizontal support (36). The output end of the second cylinder (39) passes through the end of the horizontal support (36) and engages with the sliding plate (38). A pressing component is fixedly connected to one side of the sliding plate (38).

9. The zipper tape pre-expansion machine according to claim 8, characterized in that: The clamping assembly includes a double-stroke drive component, which is a third cylinder (40). The output end of the third cylinder (40) is connected to a connecting plate (41), and a pressure strip (42) is fixedly connected to the lower end of the connecting plate (41). A rack (30) is fixedly connected to the lower end of the pressure strip (42), and a hook is fixedly connected to the front end of the pressure strip (42).

10. The zipper tape pre-expansion machine according to any one of claims 1-5 and 7-9, characterized in that: The heating assembly includes a bottom frame (9) disposed on the lower surface of the mounting platform (3), and a heating element (10) is disposed inside the bottom frame (9).

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