Zipper belt positioning mechanism

Abstract

The utility model provides a zipper tape positioning mechanism. The zipper tape positioning mechanism comprises a zipper guide seat, a front bearded needle assembly and a rear bearded needle assembly, wherein a zipper tape can penetrate through the zipper guide seat; the front bearded needle assembly comprises a first bearded needle, the first bearded needle extends into the zipper guide seat, and when the fixed-size hole of the zipper tape reaches the first bearded needle, the first bearded needle is in sliding fit with the zipper guide seat in the direction of extending into or out of the fixed-size hole; the rear bearded needle assembly comprises a sliding seat, a sliding block arranged on the sliding seat in a sliding mode and a bearded needle blocking piece rod arranged on the sliding block, the bearded needle blocking piece rod is provided with a second bearded needle, the second bearded needle stretches into the chain guide seat, and the sliding block is matched with the sliding seat in a sliding mode in the sliding direction of the first bearded needle. The crochet hook catch rod and the sliding block are in sliding fit in the advancing or retreating direction of the zipper belt. The positioning device has the advantages of being high in positioning accuracy and good in positioning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of zipper manufacturing, and in particular to a zipper tape positioning mechanism. Background Technology

[0002] Zipper tape is an intermediate form of zipper in the production process. In actual production, zippers can be customized according to different needs to produce different types of finished zippers. Using zipper tape for zipper processing helps to improve production efficiency and reduce production costs.

[0003] Zipper tape is typically composed of several zipper tape units, see reference. Figure 1 Each zipper tape unit consists of two fabric tapes and interlocking teeth between them. A long, narrow dimensional hole is formed between adjacent zipper tape units. Each zipper tape unit undergoes a series of personalized processing steps, including adhesive application, before being cut to produce a finished zipper. The top stop adhesive application process involves applying fabric or nylon adhesive tape to the end of the teeth of each zipper tape unit, forming an invisible top stop. This facilitates the subsequent installation of the top stop component, thereby strengthening the zipper's top stop.

[0004] Due to the manufacturing process of zipper tape, slight variations in the length of the dimensional holes are unavoidable in order to protect the zipper teeth from damage. Therefore, it is necessary to precisely position the top stop of each zipper tape unit to ensure the finished product meets the requirement of a concealed top stop. Utility Model Content

[0005] To address the problem of difficulty in accurately positioning the upper stop of the zipper tape unit in existing designs to ensure the finished product meets the requirement of an invisible upper stop, this utility model provides a zipper tape positioning mechanism with high positioning accuracy and good positioning effect.

[0006] This utility model provides a zipper tape positioning mechanism, which adopts the following technical solution:

[0007] A zipper tape positioning mechanism includes a guide seat for the zipper tape to pass through, a front hook needle assembly, and a rear hook needle assembly;

[0008] The front hook assembly includes a first hook, which extends into the chain guide seat. When the zipper tape's sizing hole reaches the first hook, the first hook and the chain guide seat slide and engage in the direction of extending into or out of the sizing hole.

[0009] The rear hook assembly includes a slide block, a slider slidably disposed on the slide block, and a hook stop bar disposed on the slider. The hook stop bar is provided with a second hook, which extends into the guide chain seat. The slider and the slide block slide in cooperation along the sliding direction of the first hook. The hook stop bar and the slider slide in cooperation along the direction of the zipper tape moving forward or backward.

[0010] With the above technical solution, during positioning, the zipper tape is placed on the guide seat and driven along the direction of travel. Once the sizing hole is aligned with the first hook, the first hook is driven to slide in or out of the sizing hole, allowing it to enter the hole. A slider is then driven to slide in the same direction as the first hook, allowing the second hook to enter the hole. The hook stop bar slides along the direction the zipper tape travels or retracts, and the hook limit bar moves the second hook. The second hook drives the zipper tape to move, causing the teeth of the previous zipper unit to abut against the first hook, thus accurately obtaining the top stop position. This facilitates the application of adhesive to the top stop, resulting in a smooth, non-bumping finish and ensuring the concealed top stop is achieved.

[0011] Preferably, the guide chain seat includes a guide chain base plate and a guide chain cover plate disposed on the guide chain base plate. The guide chain seat has a guide chain groove for placing and sliding the chain teeth. The guide chain groove is distributed along the zipper belt traveling direction. The front end of the guide chain groove is also provided with a guide part, which is used to guide the chain teeth into the guide chain groove.

[0012] The above technical solution guides the zipper teeth into the guide groove through the guide part, making zipper installation more convenient and reducing jamming during zipper movement.

[0013] Preferably, the guide chain cover plate is provided with a fixed seat, and a rotating rod is hinged on the fixed seat. One end of the rotating rod is provided with a pressure plate, and one end of the pressure plate passes through a through hole and extends into the guide chain groove. The fixed seat is also provided with a displacement sensor, and the sensing end of the displacement sensor is close to the rotating rod.

[0014] With the above technical solution, when the zipper belt slides along the traveling direction, one end of the pressure plate abuts against the zipper teeth on the zipper belt, thereby pressing the zipper teeth into the guide groove through the pressure plate, which helps to prevent the zipper teeth from slipping off. As the zipper belt continues to slide, the locating hole moves to the pressure plate, and the pressure plate extends into the locating hole. The displacement sensor senses the displacement change and determines that the locating hole has reached the pressure plate. At this time, the zipper belt is stopped from being driven, so that the front hook needle assembly and the rear hook needle assembly can perform positioning work.

[0015] Preferably, the front crochet assembly further includes a base disposed on the guide chain base plate and a crochet seat slidably disposed on the base, wherein the crochet seat and the base slide and engage along the sliding direction of the first crochet.

[0016] With the above technical solution, when the sizing hole reaches the pressing position, according to the preset time, the hook seat is driven to slide along the sliding direction of the first hook according to the delay. The hook seat drives the first hook to move, the first hook extends into the sizing hole, the hook seat slides and engages with the base, and the first hook slides and engages with the guide chain seat, so that the sliding process is more stable.

[0017] Preferably, the hook needle stop bar is provided with a first protrusion and a second protrusion for limiting the movement, and the first protrusion and the second protrusion are arranged and distributed along the direction of the zipper tape.

[0018] With the above technical solution, when the driving hook stop bar slides along the length of the long groove, it is limited by the first protrusion and the second protrusion, thereby limiting the sliding distance of the second hook and preventing the hook stop bar from falling off.

[0019] Preferably, the hook stop bar is connected to a hook limit bar, and a third cylinder is provided on the guide chain base plate. The third cylinder is used to drive the hook stop bar to move in the direction of the zipper tape retraction. The driving end of the third cylinder is connected to a push rod, and one end of the push rod faces the hook limit bar.

[0020] With the above technical solution, when the second hook needle is inserted into the fixed hole, the push rod is driven to move by the third cylinder. The push rod abuts against and pushes the hook needle limiting rod to move. The hook needle limiting rod drives the hook needle stop rod to move along the direction of the zipper belt, which in turn drives the second hook needle to move. The second hook needle drives the zipper belt to move backward along the zipper belt, so that the chain teeth of the previous zipper belt unit abut against the first hook needle, thereby conveniently driving the hook needle limiting rod by the third cylinder.

[0021] Preferably, a buffer reset assembly is provided on one side of the hook limit rod. The buffer reset assembly includes a reset seat and a reset member disposed on the reset seat. One end of the reset member is connected to the reset seat, and the end of the reset member away from the reset seat is connected to the hook limit rod.

[0022] With the above technical solution, when the third cylinder drives the push rod to push the hook limit rod, the reset component is compressed. After the second hook rod drives the zipper belt to move backward along the zipper belt, the third cylinder drives the push rod to reset. The elasticity of the reset component resets the hook limit rod, which in turn resets the second hook rod. At the same time, the reset component helps to form a buffer during the pushing process of the push rod.

[0023] Preferably, the reset element is a spring.

[0024] The above technical solution provides the advantages of simple structure and low cost.

[0025] Preferably, the base is further provided with a pressing assembly for pressing the zipper tape. The pressing assembly includes a drive seat slidably disposed on the base and a pressing block connected to the drive seat. The drive seat includes a drive end that passes through and extends out of the base. The pressing block is disposed on the side where the drive end extends out of the base. The pressing block is located above the zipper tape. The drive end and the base slide and engage in a sliding engagement along the direction of the pressing block toward or away from the zipper tape.

[0026] By using the above technical solution, when the drive seat moves vertically, it drives the drive end to move, which can press the zipper tape tightly, thus facilitating the application of adhesive and making the tape application smooth and without arching.

[0027] Preferably, an elastic element, which is a spring, is provided between the hook stop bar and the second hook.

[0028] The above technical solution utilizes an elastic element to accommodate different hole lengths and reduces damage to the chain teeth during the second hook pullback process.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] During positioning, place the zipper tape on the guide seat and drive the zipper tape in the direction of travel. Once the sizing hole is aligned with the first hook, drive the first hook to slide towards or away from the sizing hole, allowing the first hook to extend into the sizing hole. Then, drive the slider to slide in the direction the first hook slides, allowing the second hook to extend into the sizing hole. The hook stop bar slides in the direction the zipper tape travels or moves backward, and the hook limit bar drives the second hook to move. The second hook drives the zipper tape to move, so that the chain teeth of the previous zipper tape unit abut against the first hook, thereby accurately obtaining the top stop position. This facilitates the top stop adhesive application, ensuring a smooth and non-bulging finish, and guaranteeing the requirements for an invisible top stop.

[0031] When the third cylinder drives the push rod to push the hook limit rod, the reset component is compressed. After the second hook rod drives the zipper belt to move backward along the zipper belt, the third cylinder drives the push rod to reset. The elasticity of the reset component resets the hook limit rod, which in turn resets the second hook rod. At the same time, the reset component helps to form a buffer during the pushing process of the push rod.

[0032] An elastic element, which is a spring, is provided between the hook needle stop bar and the second hook needle. The elastic element helps to adapt to the length of different fixed holes and reduces the damage to the chain teeth during the pull-back process of the second hook needle. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the chain belt structure in an embodiment of this utility model.

[0035] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0036] Figure 3 This is an exploded view of the structure of Embodiment 1 of this utility model.

[0037] Figure 4 This is an exploded view of the guide chain seat in Embodiment 1 of this utility model.

[0038] Figure 5 This is an exploded view of the front hook needle assembly in Embodiment 1 of this utility model.

[0039] Figure 6 This is an exploded view of the rear hook assembly in Embodiment 1 of this utility model.

[0040] Figure 7 This is a schematic diagram of the structural relationship of the reset component in Embodiment 1 of this utility model.

[0041] Figure 8 This is an exploded view of the pressure belt assembly in Embodiment 1 of this utility model.

[0042] The component designations are as follows: 1. Chain guide seat; 11. Chain guide base plate; 12. Chain guide cover plate; 2. Front hook assembly; 21. First hook; 22. Base; 23. Hook seat; 3. Rear hook assembly; 31. Slide; 32. Slider; 33. Hook stop bar; 34. Second hook; 4. Chain guide groove; 5. Guide section; 6. Fixing base; 7. Rotating rod; 8. Pressure plate; 9. Displacement sensor; 1 0. First protrusion; 13. Second protrusion; 14. Hook needle limiting rod; 15. Third cylinder; 16. Push rod; 17. Reset seat; 18. Reset component; 19. Drive seat; 191. Drive end; 192. Closed end; 20. Pressure block; 24. Through hole; 25. Hook needle hole; 26. First cylinder; 27. Slide groove; 28. Long groove; 29. ​​Push chain groove; 30. Second cylinder; 35. Fourth cylinder. Detailed Implementation

[0043] The following will refer to the appendix in the embodiments of this utility model. Figures 2 to 8The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] Example 1

[0045] A zipper tape positioning mechanism, as described above Figure 2 and Figure 3 It includes a chain guide seat 1 for the zipper tape to pass through, a front hook assembly 2 and a rear hook assembly 3 disposed on the chain guide seat 1.

[0046] Specifically, refer to Figure 3 and Figure 4 The chain guide seat 1 includes a chain guide base plate 11 and a chain guide cover plate 12 disposed on the chain guide base plate 11. The chain guide base plate 11 is elongated and horizontally distributed. The chain guide cover plate 12 is disposed on the top side of the chain guide base plate 11 and is connected to the chain guide base plate 11 by bolts.

[0047] Reference Figure 3 and Figure 4 A guide groove 4 is provided on the side of the guide plate 11 facing the guide cover plate 12. The guide groove 4 allows the zipper teeth to be placed and slid. The guide groove 4 is distributed along the length of the guide plate 11 and passes through both ends of the guide plate 11. Therefore, when installing the zipper tape, the zipper tape is placed between the guide plate 11 and the guide cover plate 12, with the zipper tape distributed along the length of the guide plate 11 and the zipper teeth located within the guide groove 4. The guide groove 4 limits the zipper tape and restricts its sliding direction. Furthermore, a guide part 5 is provided at the front end of the guide groove 4 to guide the zipper teeth into the guide groove 4. The guide part 5 guides the zipper teeth into the guide groove 4, making zipper installation easier and reducing jamming during zipper movement. In this embodiment, the zipper tape moves from the front end to the rear end of the guide groove 4; that is, this direction is the zipper tape's direction of travel.

[0048] Reference Figure 3 and Figure 4The guide chain cover plate 12 has elongated through holes 24, which are distributed along the length of the guide chain base plate 11. The through holes 24 penetrate the guide chain cover plate 12 and communicate with the guide chain groove 4. A fixing seat 6 is provided on the guide chain cover plate 12, which is opposite to the guide chain base plate 11. A rotating rod 7 is hinged to the fixing seat 6. The rotating rod 7 is L-shaped, and a pressure plate 8 is provided at one end of the rotating rod 7. The pressure plate 8 is right-angled trapezoidal, and the tip of the pressure plate 8 passes through the through hole 24 and extends into the guide chain groove 4. A displacement sensor 9 is also provided on the fixing seat 6. The displacement sensor 9 is a displacement sensor, and the sensing end of the displacement sensor 9 is close to the rotating rod 7.

[0049] As the zipper tape slides along the travel direction, the tip of the pressure plate 8 abuts against the zipper teeth on the zipper tape, thereby pressing the zipper teeth into the guide groove 4 through the pressure plate 8, which helps prevent the zipper teeth from slipping off. As the zipper tape continues to slide, the locating hole moves to the pressure plate 8, and the pressure plate 8 extends into the locating hole. The displacement sensor 9 senses the displacement change, thereby determining that the locating hole has reached the pressure plate 8. At this time, the zipper tape is stopped from driving, and the front hook needle assembly 2 and the rear hook needle assembly 3 work to position the upper stop. When the zipper teeth of the next zipper tape unit move to the pressure plate 8, the zipper teeth drive the pressure plate 8 to reset along the inclined side, pressing the zipper teeth into the guide groove 4 again.

[0050] Reference Figure 3 and Figure 5 Specifically, the front crochet assembly 2 includes a base 22 disposed on the chain guide base plate 11, a crochet seat 23 slidably disposed on the base 22, and a first crochet 21 disposed on the crochet seat 23.

[0051] Reference Figure 3 and Figure 5 The guide chain base plate 11 has hook holes 25, which are elongated and distributed along the length of the guide chain base plate 11. The hook holes 25 penetrate the upper and lower surfaces of the guide chain base plate 11 and communicate with the guide chain groove 4. The base 22 is away from the guide chain cover plate 12 and is bolted to the guide chain base plate 11, with the top end of the base 22 extending into the guide chain base plate 11. The hook seat 23 and the base 22 slide and engage along the thickness direction (vertical direction) of the guide chain base plate 11. The first hook 21 is plate-shaped and distributed vertically. One end of the first hook 21 is bolted to the hook seat 23, and the end of the first hook 21 away from the hook seat 23 extends into the hook hole 25. When the zipper tape's sizing hole reaches the hook hole 25, the end of the first hook 21 away from the hook seat 23 aligns with the sizing hole. The first hook 21 and the hook hole 25 also slide and engage in a vertical direction. When the driving hook seat 23 moves in a vertical direction, it drives the first hook 21 to move, so that the first hook 21 moves in the direction of extending into or out of the fixed hole.

[0052] When the sizing hole reaches the pressing plate 8, the hook seat 23 is driven to move vertically according to the preset time. The hook seat 23 drives the first hook 21 to move. The first hook 21 extends into the guide chain groove 4 and into the sizing hole. The hook seat 23 slides with the base 22, and the first hook 21 slides with the hook hole 25, thereby making the sliding process more stable.

[0053] Reference Figure 3 and Figure 5 The base 22 is also equipped with a first cylinder 26 for driving the hook seat 23 to slide vertically. The drive end 191 of the first cylinder 26 is connected to the hook seat 23. When the sizing hole reaches the pressure plate 8, the first cylinder 26 drives the hook seat 23 to move vertically after a delay. The hook seat 23 drives the first hook 21 to move. The first hook 21 extends into the sizing hole, and through the rear hook assembly 3, it extends into the sizing hole and pulls the zipper tape back, so that the first hook 21 abuts against the chain teeth of the previous zipper tape unit, thereby accurately obtaining the top stop position.

[0054] Specifically, refer to Figure 3 and Figure 6 The rear hook assembly 3 includes a slide 31 mounted on the guide chain base plate 11, a slider 32 slidably mounted on the slide 31, and a hook stop bar 33 mounted on the slider 32.

[0055] Reference Figure 3 and Figure 6 The slide block 31 is rectangular in shape and is distributed along the length of the guide chain base plate 11. The slide block 31 is bolted to the guide chain base 22 and is located away from the guide chain cover plate 12. The slider 32 is also rectangular in shape and is distributed along the length of the guide chain base plate 11. A groove 27 is provided on the slide block 31. The groove 27 is adapted to the shape of the slider 32, and the slider 32 slides vertically with the groove 27, which also limits the sliding distance of the slider 32. A long groove 28 is provided on the slider 32. The long groove 28 is square and extends along the length of the slider 32, passing through both ends of the slider 32. The hook needle baffle rod 33 is a long rod, which is distributed along the length direction of the slider 32. The hook needle baffle rod 33 passes through the long groove 28, and the hook needle baffle rod 33 and the long groove 28 slide and cooperate along the length direction of the long groove 28.

[0056] Reference Figure 3 and Figure 6The bottom side of the guide chain base plate 11 is provided with a push chain groove 29. The push chain groove 29 is an elongated groove and is distributed along the length of the guide chain base plate 11. The push chain groove 29 is connected to the guide chain groove 4. A second hook 34 is provided at one end of the hook needle stop rod 33. The second hook 34 is L-shaped and one end is bolted to the hook needle stop rod 33. The second hook 34 at the end away from the hook needle stop rod 33 extends into the push chain groove 29. When the drive slider 32 slides vertically in the slide groove 27, it drives the hook needle stop rod 33 to move, thereby causing the second hook 34 to extend into or out of the guide chain groove 4. When the first hook 21 extends into the sizing hole, the drive slider 32 slides vertically in the slide groove 27, driving the hook needle stop rod 33 to move, thereby causing the second hook 34 to extend into or out of the guide chain groove 4. At this time, the second hook 34 also extends into the sizing hole.

[0057] Continue to refer to Figure 3 and Figure 6 A second cylinder 30 is provided on the bottom side of the slide block 31. The second cylinder 30 is used to drive the slider 32 to move in the vertical direction. The driving end 191 of the second cylinder 30 is connected to the slider 32, so the slider 32 can be driven to move in the vertical direction through the second cylinder 30.

[0058] In addition, refer to Figure 3 and Figure 6 The hook needle stop bar 33 is provided with a first protrusion 10 and a second protrusion 13 for limiting. The first protrusion 10 and the second protrusion 13 are located on the same side of the hook needle stop bar 33. The first protrusion 10 and the second protrusion 13 are respectively close to the two ends of the hook needle stop bar 33. So when the hook needle stop bar 33 is driven to slide along the length direction of the long groove 28, it is limited by the first protrusion 10 and the second protrusion 13, thereby limiting the sliding distance of the second hook needle 34 and preventing the hook needle stop bar 33 from falling off.

[0059] Reference Figure 6 and Figure 7A hook stop bar 33, located away from the end of the second hook 34, is connected to a hook limit bar 14. The hook limit bar 14 is L-shaped, with its long side distributed along the width direction of the slider 32. The hook stop bar 33 is connected to the long side of the hook limit bar 14. When the slider 32 slides vertically within the groove 27, it moves the hook stop bar 33, which in turn moves the hook limit bar 14. A third cylinder 15 is provided on the guide chain base plate 11. The third cylinder 15 drives the hook stop bar 33 to move along the length direction of the groove 27. A push rod 16 is connected to the drive end 191 of the third cylinder 15. The push rod 16 is distributed along the length direction of the hook stop bar 33. One end of the push rod 16 is connected to the drive end 191 of the third cylinder 15, and the other end of the push rod 16 faces the hook limit bar 14. When the second hook 34 also extends into the fixed hole, the third cylinder 15 drives the push rod 16 to move. The push rod 16 abuts against and pushes the hook limit rod 14 to move. The hook limit rod 14 drives the hook stop rod 33 to slide along the long groove 28, further driving the second hook 34 to move. The second hook 34 drives the zipper tape to move in the direction of the zipper tape's backward movement (i.e., the opposite direction of the zipper tape's movement), so that the chain teeth of the previous zipper tape unit abut against the first hook 21.

[0060] In addition, refer to Figure 6 and Figure 7 A buffer reset assembly is provided on one side of the hook needle limiting rod 14. Specifically, the buffer reset assembly includes a reset seat 17 and a reset member 18 disposed on the reset seat 17. The reset seat 17 is disposed on one side of the hook needle limiting rod 14 and is away from the hook needle stop rod 33. In this embodiment, the reset member 18 is a spring. One end of the reset member 18 is connected to the reset seat 17, and the end of the reset member 18 away from the reset seat 17 is connected to the hook needle limiting rod 14. When the third cylinder 15 drives the push rod 16 to push the hook needle limiting rod 14, the reset member 18 is compressed. After the second hook needle 34 drives the zipper belt to move backward along the zipper belt, the third cylinder 15 drives the push rod 16 to reset. The elastic force of the reset member 18 resets the hook needle limiting rod 14, thereby resetting the second hook needle 34. At the same time, the reset member 18 helps to form a buffer during the pushing process of the push rod 16. There are two reset components 18. The two reset components 18 are aligned and are spaced apart along the long side of the hook limit rod 14. The two reset components 18 help to make the force more uniform and the reset process more stable.

[0061] When the sizing hole reaches the pressing plate 8, the first cylinder 26 drives the hook needle seat 23 to move vertically. The hook needle seat 23 drives the first hook needle 21 to extend into the sizing hole. When the second cylinder 30 drives the slider 32 to slide vertically in the slide groove 27, it drives the hook needle stop rod 33 to move, thereby causing the second hook needle 34 to extend into the sizing hole. The third cylinder 15 drives the push rod 16 to move. The push rod 16 abuts against and pushes the hook needle limiting rod 14 to move. The hook needle limiting rod 14 drives the hook needle stop rod 33 to slide along the long groove 28, further driving the second hook needle 34 to move. The second hook needle 34 drives the zipper tape to move backward along the zipper tape, so that the chain teeth of the previous zipper tape unit abut against the first hook needle 21, thereby accurately obtaining the top stop position so that the invisible top stop after the fabric is applied meets the accuracy requirements.

[0062] Reference Figure 3 and Figure 8 The base 22 is also provided with a pressing belt assembly for pressing the zipper tape. Specifically, the pressing belt assembly includes a drive seat 19 slidably disposed on the base 22 and a pressing block 20 connected to the drive seat 19.

[0063] Reference Figure 3 and Figure 8 The drive base 19 is U-shaped and includes three ends: a closed end 192 and two drive ends 191. Both drive ends 191 pass through and extend out of the top side of the base 22. The two drive ends 191 are opposite each other along the width direction of the guide chain base plate 11. The hook hole 25 is located between the two drive ends 191, and both drive ends 191 slide and engage with the base 22 in the vertical direction.

[0064] Reference Figure 3 and Figure 8 The pressure block 20 is located on one side of the drive end 191 extending out of the base 22, and the pressure block 20 is located above the fabric of the zipper belt. There are two pressure blocks 20, which are arranged one-to-one on the two drive ends 191. The two pressure blocks 20 are opposite each other along the width direction of the guide chain base plate 11. When the drive seat 19 moves in the vertical direction, it drives the two drive ends 191 to move, which can press the fabric on both sides of the zipper belt tightly, so as to facilitate the application of adhesive and make the fabric application smooth and without arching.

[0065] Reference Figure 3 and Figure 8 A fourth cylinder 35 is provided on the base 22. The fourth cylinder 35 is used to drive the drive seat 19 to move in the vertical direction. The driving end 191 of the fourth cylinder 35 is connected to the closed end 192 of the drive seat 19, so that the drive seat 19 can be driven to move in the vertical direction through the fourth cylinder 35.

[0066] The fourth cylinder 35 drives the drive seat 19 to move vertically, which in turn moves the two drive ends 191 to press the fabric tape on both sides of the zipper tape, thus facilitating the application of adhesive and ensuring a smooth and even application without arching.

[0067] The implementation principle of this application is as follows:

[0068] During positioning, the zipper tape is placed between the guide plate 11 and the guide cover plate 12, with the zipper teeth located in the guide groove 4. The tip of the pressure plate 8 abuts against the zipper teeth on the zipper tape, thereby pressing the zipper teeth into the guide groove 4 through the pressure plate 8. By driving the zipper tape to slide along the traveling direction, the locating hole moves to the pressure plate 8, and the pressure plate 8 extends into the locating hole. The displacement sensor 9 senses the displacement change, thereby determining that the locating hole has reached the pressure plate 8, and stops driving the zipper tape.

[0069] The first cylinder 26 drives the hook needle seat 23 to move vertically, which in turn moves the first hook needle 21, which then extends into the sizing hole. The second cylinder 30 drives the slider 32 to slide vertically within the groove 27, which in turn moves the hook needle stop rod 33, causing the second hook needle 34 to extend into the sizing hole. The third cylinder 15 drives the push rod 16 to move, which abuts against and pushes the hook needle limiting rod 14. The hook needle limiting rod 14 causes the hook needle stop rod 33 to slide along the long groove 28, further moving the second hook needle 34. The second hook needle 34 then drives the zipper tape to move backward along the zipper tape, thus moving the previous zipper tape unit. The chain teeth abut against the first hook 21, and finally the fourth cylinder 35 drives the drive seat 19 to move vertically, driving the two drive ends 191 to move, pressing the fabric tape on both sides of the zipper tape to ensure that the zipper tape will not change position due to the reset of the first hook 21 and the second hook 34. Finally, the first cylinder 26 drives the first hook 21 to reset, the third cylinder 15 drives the push rod 16 to reset, the elasticity of the reset part 18 drives the second hook 34 to reset, and the second cylinder 30 drives the slider 32 to reset, thereby accurately obtaining the top stop position, facilitating the top stop adhesive application work, which is conducive to the application of fabric to make the effect flat and without arching, so as to ensure the finished product requirements of invisible top stop.

[0070] Example 2

[0071] The difference between this embodiment and Embodiment 1 is that an elastic element, which is a spring, is provided between the hook stop bar 33 and the second hook 34. The elastic element helps to adapt to the length of different fixed holes and reduces the damage to the chain teeth during the pull-back process of the second hook 34.

[0072] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A zipper tape positioning mechanism, characterized in that: Includes a zipper guide (1) for the zipper tape to pass through, a front hook assembly (2) and a rear hook assembly (3); The front hook assembly (2) includes a first hook (21), which extends into the chain guide seat (1). When the zipper tape's sizing hole reaches the first hook (21), the first hook (21) and the chain guide seat (1) slide and engage in the direction of extending into or out of the sizing hole. The rear hook assembly (3) includes a slide (31), a slider (32) slidably disposed on the slide (31), and a hook stop bar (33) disposed on the slider (32). The hook stop bar (33) is provided with a second hook (34), which extends into the guide chain seat (1). The slider (32) and the slide (31) slide in cooperation along the sliding direction of the first hook (21), and the hook stop bar (33) and the slider (32) slide in cooperation along the direction of the zipper tape moving forward or backward.

2. The zipper tape positioning mechanism according to claim 1, characterized in that: The guide chain seat (1) includes a guide chain base plate (11) and a guide chain cover plate (12) disposed on the guide chain base plate (11). The guide chain seat (1) has a guide chain groove (4) for placing and sliding the chain teeth. The guide chain groove (4) is distributed along the zipper belt travel direction. The front end of the guide chain groove (4) is also provided with a guide part (5). The guide part (5) is used to guide the chain teeth into the guide chain groove (4).

3. The zipper tape positioning mechanism according to claim 2, characterized in that: A fixed seat (6) is provided on the guide chain cover plate (12), and a rotating rod (7) is hinged on the fixed seat (6). A pressure plate (8) is provided at one end of the rotating rod (7). One end of the pressure plate (8) passes through the through hole (24) and extends into the guide chain groove (4). A displacement sensor (9) is also provided on the fixed seat (6), and the sensing end of the displacement sensor (9) is close to the rotating rod (7).

4. The zipper tape positioning mechanism according to claim 3, characterized in that: The front crochet assembly (2) also includes a base (22) disposed on the guide chain base plate (11) and a crochet seat (23) slidably disposed on the base (22). The crochet seat (23) and the base (22) slide and cooperate along the sliding direction of the first crochet (21).

5. A zipper tape positioning mechanism according to claim 2, characterized in that: The hook needle stop bar (33) is provided with a first protrusion (10) and a second protrusion (13) for limiting the position. The first protrusion (10) and the second protrusion (13) are arranged and distributed along the direction of the zipper tape.

6. A zipper tape positioning mechanism according to claim 5, characterized in that: The hook stop bar (33) is connected to the hook limit bar (14), and a third cylinder (15) is provided on the guide chain bottom plate (11). The third cylinder (15) is used to drive the hook stop bar (33) to move in the direction of the zipper tape retraction. The drive end (191) of the third cylinder (15) is connected to a push rod (16), and one end of the push rod (16) faces the hook limit bar (14).

7. A zipper tape positioning mechanism according to claim 6, characterized in that: A buffer reset assembly is provided on one side of the hook limit rod (14). The buffer reset assembly includes a reset seat (17) and a reset member (18) disposed on the reset seat (17). One end of the reset member (18) is connected to the reset seat (17), and the end of the reset member (18) away from the reset seat (17) is connected to the hook limit rod (14).

8. A zipper tape positioning mechanism according to claim 7, characterized in that: The reset element (18) is a spring.

9. A zipper tape positioning mechanism according to claim 4, characterized in that: The base (22) is also provided with a pressing assembly for pressing the zipper tape. The pressing assembly includes a drive seat (19) slidably disposed on the base (22) and a pressing block (20) connected to the drive seat (19). The drive seat (19) includes a drive end (191) that passes through and extends out of the base (22). The pressing block (20) is disposed on one side of the drive end (191) that extends out of the base (22). The pressing block (20) is located above the zipper tape. The drive end (191) and the base (22) slide and cooperate with each other along the direction of the pressing block (20) toward or away from the zipper tape.

10. A zipper tape positioning mechanism according to claim 1, characterized in that: An elastic element, which is a spring, is provided between the hook needle stop bar (33) and the second hook needle (34).

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