A double pull fastener zipper threading device

Abstract

This utility model discloses a zipper feed device for double-zipper teeth, including a zipper positioning device, a zipper clamping device, and a transmission mechanism. The zipper clamping device is located between the zipper positioning device and the transmission mechanism. The zipper clamping device includes a clamping mechanism and a left-right moving mechanism. The left-right moving mechanism includes a slider, a slide rail, and a tension spring. One end of the tension spring is connected to the frame, and the other end is connected to the slider. The slider and the slide rail are slidably engaged. The zipper clamping mechanism includes a connecting seat, a zipper driver, an upper clamping block, and a lower clamping block. The connecting seat is connected to the slider, and a sliding rod that can slide up and down is provided inside the connecting seat. The upper end of the sliding rod is connected to the driving end of the zipper driver, and the lower end is connected to the lower clamping block. This utility model clamps the zipper when feeding the zipper head through the zipper clamping device, shortening the distance the zipper can extend during the feeding process and preventing misalignment between the left and right zipper straps. With the combined action of the zipper positioning device, it ensures that the two separate zipper straps are accurately and synchronously fed into the zipper head.

Description

Technical Field

[0001] This utility model relates to the field of zipper manufacturing technology, and in particular to a threading device for a double-zipper toothed zipper. Background Technology

[0002] The left and right chain straps of the double-pull-head rubber tooth zipper are separate. When inserting the zipper pull, the left and right chain straps need to be positioned to ensure that the zipper block pin end stops precisely at the upper mold space of the zipper pull insertion station.

[0003] Although existing technologies can accurately position the two-chain-separated rubber-tooth zippers before threading the zipper pull, the distance between the zipper pull station and the transmission mechanism is relatively far, and the characteristics of the zipper tape make the zipper stretch greatly when under force. This causes the left and right chain tapes to be misaligned due to the influence of the transmission force when threading the zipper pull, thus making it impossible to effectively thread the zipper pull.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a zipper pull device for double-pull rubber teeth zippers. By setting a movable chain clamping device between the zipper positioning device and the transmission mechanism, the zipper is clamped when the pull is pulled, so that the zipper can extend a shorter distance during the process of pulling the pull, avoiding the misalignment of the left and right chain straps. With the combined action of the zipper positioning device, it is ensured that the two separate chain straps are precisely and synchronously pulled into the pull. Utility Model Content

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A threading device for a double-zipper with rubber teeth, comprising a zipper positioning device, a zipper clamping device, and a transmission mechanism connected to a frame, characterized in that:

[0007] The zipper clamping device is located between the zipper positioning device and the transmission mechanism, and is closer to the zipper positioning device.

[0008] The chain clamping device includes a chain clamping mechanism and a left-right moving mechanism;

[0009] The left and right moving mechanism includes a slider, a slide rail and a tension spring. The tension spring is located between the slider and the zipper positioning device. One end of the tension spring is connected to the frame and the other end is connected to the slider.

[0010] The slider is mounted on the frame and can slide left and right via a slide rail;

[0011] The chain clamping mechanism includes a connecting seat, a chain clamping driver, an upper clamping block, and a lower clamping block;

[0012] The connecting seat is connected to the slider, and the connecting seat is provided with a sliding rod that can slide up and down;

[0013] The upper clamping block and the chain drive are located below and above the connecting seat, respectively, and are fixedly connected to the connecting seat;

[0014] The upper end of the slide bar is connected to the drive end of the chain drive, and the lower end is connected to the lower clamping block;

[0015] The zipper positioning device is used to position the two separate zipper straps at the zipper head station before the zipper head is inserted;

[0016] The transmission mechanism is used to drive the chain belt forward to pass through the pull head.

[0017] Preferably, the zipper positioning device includes an upper guide plate and a lower guide plate, and a zipper feed channel is provided between the upper guide plate and the lower guide plate in a left-right opposite manner;

[0018] A probe mechanism is provided below the lower guide plate, which is used to detect the zipper gap. A hook positioning mechanism is provided above the upper guide plate between the upper mold and the probe mechanism.

[0019] The hook positioning mechanism is set one-to-one with the chain feeding channel, and the hook positioning mechanism is used to hook the upper stop end of the zipper when triggered;

[0020] A pull-back mechanism is provided between the two hook positioning mechanisms and the upper guide plate. The hook positioning mechanism is slidably connected to the upper guide plate through the pull-back mechanism. An arrival detection sensor is provided above the upper mold. The arrival detection sensor is used to control the transmission mechanism to stop after the two hooks arrive at their respective positions.

[0021] Preferably, the lower guide plate has a probe hole at the chain feed channel, and the probe hole is located below the chain teeth;

[0022] The probe mechanism includes a probe, a probe spring, and a probe sensor;

[0023] The middle part of the probe is rotatably connected to the lower guide plate, the probe end is located in the probe hole, and the other end is provided with a probe sensor and a probe tension spring on both sides respectively.

[0024] The probe tension spring is connected to the probe and the lower guide plate at both ends, and is used to pull the probe so that the probe end is close to the chain feed channel.

[0025] Preferably, the upper guide plate has a hook needle through hole at the position corresponding to the chain feed channel. The hook needle through hole is located above the chain teeth of the chain and between the probe through hole and the upper mold.

[0026] The hook mechanism includes a hook and a hook driver;

[0027] The hook is located above the hook hole, and the other end of the hook is connected to the drive end of the hook driver above. The hook driver is slidably connected to the upper guide plate through a pull-back mechanism.

[0028] Preferably, the pull-back mechanism includes a sliding seat, a pull-back spring, and a connecting plate;

[0029] The sliding seat is slidably connected to the upper guide plate, the connecting plate is connected to the upper guide plate and located at the front end of the sliding seat, the two ends of the pull spring are respectively connected to the connecting plate and the sliding seat, the hook driver of the hook mechanism is connected to the sliding seat, and the hook of the hook mechanism passes through the sliding seat upward and is connected to the driving end of the hook driver.

[0030] Preferably, the upper clamping block and the lower clamping block are provided with clearance grooves at the zipper teeth.

[0031] Preferably, the chain drive is a pneumatic cylinder or an electric cylinder.

[0032] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0033] This utility model incorporates a movable clamping device between the zipper positioning device and the transmission mechanism. This clamps the zipper when it is threaded through the zipper pull, shortening the distance the zipper can extend during the threading process. This prevents the left and right chain straps from misaligning. With the combined action of the zipper positioning device, it ensures that the two separate chain straps are threaded through the zipper pull precisely and synchronously. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention on a double-head hook code threading machine;

[0035] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0036] Figure 3 This is a three-dimensional structural diagram of the zipper positioning device in this utility model;

[0037] Figure 4 This is a cross-sectional structural diagram of the zipper positioning device in this utility model;

[0038] The components include: frame 1, chain clamping mechanism 2, left and right moving mechanism 3, probe mechanism 4, hook positioning mechanism 5, pull-back mechanism 6, upper mold 7, position detection sensor 8, connecting seat 21, chain clamping driver 22, upper clamping block 23, lower clamping block 24, slide bar 25, slider 31, slide rail 32, tension spring 33, probe 41, probe tension spring 42, probe sensor 43, hook 51, hook driver 52, sliding seat 61, and pull-back mechanism. Spring 62, connecting plate 63, zipper positioning device 10, zipper clamping device 20, transmission mechanism 30, zipper 40, zipper head insertion station 50, zipper head feeding mechanism 60, chain feed channel 70, clearance groove 80, upper guide plate 101, lower guide plate 102, zipper head insertion device 100, chain 401, zipper empty space 402, upper stop end 403, square pin end 404, hook needle hole 101a, probe hole 102a. Detailed Implementation

[0039] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. 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 to provide a more thorough and complete understanding of the disclosure of this utility model.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to 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," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0041] 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.

[0042] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0043] like Figure 1-4 As shown, a threading device for a double-pull rubber tooth zipper includes a zipper positioning device 10, a zipper clamping device 20, and a transmission mechanism 30 connected to a frame 1. The zipper clamping device 20 is located between the zipper positioning device 10 and the transmission mechanism 30, and is closer to the zipper positioning device 10.

[0044] The chain clamping device 20 includes a chain clamping mechanism 2 and a left-right moving mechanism 3;

[0045] The left and right moving mechanism 3 includes a slider 31, a slide rail 32 and a tension spring 33. The tension spring 33 is located between the slider 31 and the zipper positioning device 10. One end of the tension spring 33 is connected to the frame 1 and the other end is connected to the slider 31.

[0046] The slider 31 is mounted on the frame 1 and can slide left and right via the slide rail 32;

[0047] The chain clamping mechanism 2 includes a connecting seat 21, a chain clamping driver 22, an upper clamping block 23, and a lower clamping block 24;

[0048] The connecting seat 21 is connected to the slider 31, and the connecting seat 21 is provided with a sliding rod 25 that can slide up and down;

[0049] The upper clamping block 23 and the chain drive 22 are located below and above the connecting seat 21, respectively, and are fixedly connected to the connecting seat 21.

[0050] The upper end of the slide bar 25 is connected to the drive end of the chain drive 22, and the lower end is connected to the lower clamping block 24.

[0051] The zipper positioning device 10 is used to position the two separate zipper straps 401 on the zipper head station 50 before the zipper head is inserted.

[0052] The transmission mechanism 30 is used to drive the chain belt 401 forward to pass through the pull head.

[0053] In this implementation, the threading device 100 is installed on the double-pull-head hook code threading machine, which also includes a pull-head feeding mechanism 60 for pushing the double pull heads to the threading station 50.

[0054] During operation: First, the two separate zipper belts 401 are positioned by the zipper positioning device 10. Then, the zipper head feeding mechanism 60 moves upward to send the two zipper heads into the zipper head insertion station 50. At the same time, the zipper clamping device 20 moves to drive the lower clamping block 24 to move closer to the upper clamping block 23 to clamp the two zipper belts 401.

[0055] Subsequently, the transmission mechanism 30 is activated, driving the chain 401 forward, so that the chain 401 passes through the upper stop end 403 and enters the pull head. At the same time, the movement of the chain 401 pulls the chain clamping device 20 forward synchronously.

[0056] After the zipper head is inserted into the set position, the chain clamping device 20 reverses and releases the chain belt 401. The transmission mechanism 30 continues to drive the chain belt 401 forward until the next zipper slot 402 of the chain belt 401 reaches the zipper head insertion station 50 and stops. Then, the above actions and steps can be followed in sequence to realize the automated zipper head insertion.

[0057] In the above structure, by setting a movable clamping device 20 between the zipper positioning device 10 and the transmission mechanism 30, the zipper 40 is clamped when the zipper head is inserted, so that the zipper 40 can extend a shorter distance during the process of inserting the zipper head, avoiding the situation where the left chain 401 and the right chain 401 are misaligned, and ensuring that the two separate chain 401 are inserted into the zipper head accurately and synchronously.

[0058] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, the zipper positioning device 10 includes an upper guide plate 101 and a lower guide plate 102, and a zipper feed channel 70 is arranged between the upper guide plate 101 and the lower guide plate 102 in a left-right opposite manner.

[0059] A probe mechanism 4 is provided below the lower guide plate 102. The probe mechanism 4 is used to detect the zipper slot 402 of the zipper 40. A hook positioning mechanism 5 is provided above the upper guide plate 101 between the upper mold 7 and the probe mechanism 4.

[0060] The hook positioning mechanism 5 is set in a one-to-one correspondence with the chain feeding channel 70. The hook positioning mechanism 5 is used to hook the upper stop end 403 of the zipper 40 when triggered.

[0061] A pull-back mechanism 6 is provided between the two hook positioning mechanisms 5 and the upper guide plate 101 respectively. The hook positioning mechanism 5 is slidably connected to the upper guide plate 101 through the pull-back mechanism 6. An arrival detection sensor 8 is provided above the upper mold 7. The arrival detection sensor 8 is used to control the transmission mechanism 30 to stop after detecting that the two hooks 51 are in place at the same time.

[0062] In this implementation, the zipper 40 is an uncut zipper material with the two chain straps 401 separated. A zipper gap 402 is provided between the upper zipper 40 and the lower zipper 40 of the zipper material. The upper zipper 40 is provided with an upper stop end 403 at the end near the zipper gap 402, and the lower zipper 40 is provided with a square pin end 404 at the end near the zipper gap 402.

[0063] During operation, the zipper is driven forward in the feed channel 70 by the transmission mechanism 30 on the equipment. Since there are no teeth on the zipper slot 402, when the zipper slot 402 of the zipper 40 moves to the sensing position of the probe mechanism 4, the probe mechanism 4 triggers and controls the hook positioning mechanism 5 to start hooking the upper stop end 403 of the zipper 40. Then, under the action of the transmission mechanism 30, the hook positioning mechanism 5 continues to move forward a small range with the zipper 40. When the position detection sensor detects that the hook positioning mechanism 5 has moved to the set position, it controls the transmission mechanism 30 to stop running. Then, the hook positioning mechanism 5 is reset under the action of the pull-back mechanism 6. At this time, the square pin end 404 of the zipper 40 is located in the slot of the upper mold 7 (zipper head station 50).

[0064] Subsequently, the zipper feeding mechanism 60 sends the zipper head into the empty space of the upper mold 7, thereby achieving precise and efficient positioning of the rubber tooth zipper 40, which can separate the two chain belts 401, before the zipper head is inserted, and ensuring stable and reliable operation.

[0065] After the zipper 40 is positioned, the clamping device 20 clamps the zipper 40, and then the transmission mechanism 30 pulls the zipper 40 through the zipper pull.

[0066] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, the lower guide plate 102 is provided with a probe hole 102a at the chain feed channel 70, and the probe hole 102a is located below the chain teeth of the chain 401.

[0067] The probe mechanism 4 includes a probe 41, a probe tension spring 42, and a probe sensor 43;

[0068] The middle part of the probe 41 is rotatably connected to the lower guide plate 102. One end of the probe 41 is located in the probe through hole 102a, and the other end is provided with a probe sensor 43 and a probe tension spring 42 on both sides respectively.

[0069] The probe tension spring 42 is connected to the probe 41 and the lower guide plate 102 at both ends, and the probe tension spring 42 is used to pull the probe 41 so that the end of the probe 41 is close to the chain feed channel 70.

[0070] In this embodiment, when the zipper hole 402 of the zipper 40 travels to the probe hole 102a, the probe 41 end of the probe 41 falls into the zipper hole 402 under the tension of the probe spring 42, thereby causing the probe 41 to rotate and changing the distance between the other end of the probe 41 and the probe sensor 43, thereby triggering the probe sensor 43. After the probe sensor 43 is triggered, it controls the hook positioning mechanism 5 to start, thereby achieving accurate detection of the zipper hole 402 to control the hook positioning mechanism 5 to start.

[0071] Furthermore, such as Figure 1 , 2As shown in Figures 3 and 4, a hook needle through hole 101a is provided on the upper guide plate 101 at the position corresponding to the chain feed channel 70. The hook needle through hole 101a is located above the chain teeth of the chain 401 and is located between the probe through hole 102a and the upper mold 7.

[0072] The hook positioning mechanism 5 includes a hook 51 and a hook driver 52;

[0073] The hook 51 is located above the hook hole 101a. The other end of the hook 51 is connected to the driving end of the hook driver 52 above. The hook driver 52 is slidably connected to the upper guide plate 101 through the pull-back mechanism 6.

[0074] In this embodiment, when the probe sensor 43 is triggered, the hook driver 52 is controlled to move, driving the hook 51 to move towards the hook hole 101a until the hook end of the hook 51 is in place. Then the hook 51 hooks the upper stop end 403 of the forward-moving zipper 40 and moves forward with the zipper 40 in a small range. When the position detection sensor detects that the hook 51 has moved to the set position, the transmission mechanism 30 is controlled to stop running. Then the hook positioning mechanism 5 is reset under the action of the pull-back mechanism 6. At this time, the square pin end 404 of the zipper 40 is located in the empty position of the upper mold 7. Thus, the upper stop end 403 of the zipper 40 is accurately hooked during the pull positioning process.

[0075] In this embodiment, the hook driver 52 is a pneumatic cylinder or an electric cylinder.

[0076] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, the pull-back mechanism 6 includes a sliding seat 61, a pull-back spring 62, and a connecting plate 63;

[0077] The sliding seat 61 is slidably connected to the upper guide plate 101. The connecting plate 63 is connected to the upper guide plate 101 and is located at the front end of the sliding seat 61. The two ends of the pull spring 62 are respectively connected to the connecting plate 63 and the sliding seat 61. The hook driver 52 of the hook positioning mechanism 5 is connected to the sliding seat 61. The hook 51 of the hook positioning mechanism 5 passes through the sliding seat 61 upward and is connected to the driving end of the hook driver 52.

[0078] In this embodiment, when the sliding seat 61 and the hook 51 move slightly with the zipper 40 and trigger the positioning detection sensor, the transmission mechanism 30 stops. Under the action of the pull-back spring 62, the sliding seat 61 is pulled to drive the hook 51 to pull back and reset, thereby achieving precise control of the square pin end 404 of the zipper 40 in the empty position of the upper mold 7 during the positioning process of the zipper 40.

[0079] In this embodiment, since the two chain straps 401 of the zipper 40 are in a separate state, the transmission mechanism 30 is controlled to stop only after the positioning detection sensor detects that both hooks 51 are in position. This structural design ensures that the two chain straps 401 are accurately aligned after positioning.

[0080] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, in order to clamp the zipper 40 without damaging the zipper teeth, the upper clamping block 23 and the lower clamping block 24 are provided with clearance grooves 80 at the zipper teeth of the zipper 40.

[0081] Furthermore, the chain drive 22 is a pneumatic cylinder or an electric cylinder.

[0082] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A threading device for a double-zipper with rubber teeth, comprising a zipper positioning device, a zipper clamping device, and a transmission mechanism connected to a frame, characterized in that: The zipper clamping device is located between the zipper positioning device and the transmission mechanism, and is closer to the zipper positioning device. The chain clamping device includes a chain clamping mechanism and a left-right moving mechanism; The left and right moving mechanism includes a slider, a slide rail and a tension spring. The tension spring is located between the slider and the zipper positioning device. One end of the tension spring is connected to the frame and the other end is connected to the slider. The slider is mounted on the frame and can slide left and right via a slide rail; The chain clamping mechanism includes a connecting seat, a chain clamping driver, an upper clamping block, and a lower clamping block; The connecting seat is connected to the slider, and the connecting seat is provided with a sliding rod that can slide up and down; The upper clamping block and the chain drive are located below and above the connecting seat, respectively, and are fixedly connected to the connecting seat; The upper end of the slide bar is connected to the drive end of the chain drive, and the lower end is connected to the lower clamping block; The zipper positioning device is used to position the two separate zipper straps at the zipper head station before the zipper head is inserted; The transmission mechanism is used to drive the chain belt forward to pass through the pull head.

2. The threading device for a double-pull rubber tooth zipper according to claim 1, characterized in that, The zipper positioning device includes an upper guide plate and a lower guide plate, and a zipper feed channel is provided between the upper guide plate and the lower guide plate in a left-right opposite manner; A probe mechanism is provided below the lower guide plate, which is used to detect the zipper gap. A hook positioning mechanism is provided above the upper guide plate between the upper mold and the probe mechanism. The hook positioning mechanism is set one-to-one with the chain feeding channel, and the hook positioning mechanism is used to hook the upper stop end of the zipper when triggered; A pull-back mechanism is provided between the two hook positioning mechanisms and the upper guide plate. The hook positioning mechanism is slidably connected to the upper guide plate through the pull-back mechanism. An arrival detection sensor is provided above the upper mold. The arrival detection sensor is used to control the transmission mechanism to stop after the two hooks arrive at their respective positions.

3. The threading device for a double-pull rubber tooth zipper according to claim 2, characterized in that, The lower guide plate is provided with a probe hole at the feed channel of the chain belt, and the probe hole is located below the chain teeth of the chain belt; The probe mechanism includes a probe, a probe tension spring, and a probe sensor; The middle part of the probe is rotatably connected to the lower guide plate, the probe end is located in the probe hole, and the other end is provided with a probe sensor and a probe tension spring on both sides respectively. The probe tension spring is connected to the probe and the lower guide plate at both ends, and is used to pull the probe so that the probe end is close to the chain feed channel.

4. The threading device for a double-pull rubber tooth zipper according to claim 2, characterized in that, The upper guide plate is provided with a hook needle through hole at the position corresponding to the chain feed channel. The hook needle through hole is located above the chain teeth of the chain and between the probe through hole and the upper mold. The hook mechanism includes a hook and a hook driver; The hook is located above the hook hole, and the other end of the hook is connected to the drive end of the hook driver above. The hook driver is slidably connected to the upper guide plate through a pull-back mechanism.

5. The threading device for a double-pull rubber tooth zipper according to claim 2, characterized in that, The pull-back mechanism includes a sliding seat, a pull-back spring, and a connecting plate; The sliding seat is slidably connected to the upper guide plate, the connecting plate is connected to the upper guide plate and located at the front end of the sliding seat, the two ends of the pull spring are respectively connected to the connecting plate and the sliding seat, the hook driver of the hook mechanism is connected to the sliding seat, and the hook of the hook mechanism passes through the sliding seat upward and is connected to the driving end of the hook driver.

6. The threading device for a double-pull rubber tooth zipper according to claim 1, characterized in that, The upper clamping block and the lower clamping block are provided with clearance grooves at the zipper teeth.

7. The threading device for a double-pull rubber tooth zipper according to claim 1, characterized in that, The chain drive is a pneumatic cylinder or an electric cylinder.

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