Zipper positioning mechanism

Abstract

This utility model discloses a zipper positioning mechanism, including a pad and a pressure block slidably connected to a support rod. A push block is provided on the pressure block, and an elastic component is disposed between the push block and the pressure block. The push block is connected to a power device, which pushes the push block. The push block, through the elastic component, pushes the pressure block to slide on the support rod. The pressure block presses the protrusion of the zipper tape onto the pad, causing the elastic component to deform under force. After the pressure block disengages from the protrusion support, the elastic component resets, allowing the pressure block to slide on the support rod and approach the pad. A fixed seat is slidably connected to the support rod, and a displacement detection device is provided on the support rod to detect the displacement of the support rod on the fixed seat. This utility model utilizes the synergistic effect of the pressure block and the elastic component to directly press the protrusion of the zipper tape, and the reset of the elastic component drives the pressure block to achieve secondary downward pressure, thereby accurately positioning the blank segment of the zipper tooth. Simultaneously, by detecting the lateral displacement of the pressure block, the end of the zipper tooth can be accurately positioned, effectively improving positioning accuracy and adjustment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of zipper production equipment technology, specifically to a zipper positioning mechanism. Background Technology

[0002] For example, the X-type zipper cut-out positioning mechanism disclosed in Chinese Patent Publication No. CN222819050U uses a tooth detection device to detect the blank section of the zipper, then drives a stop bar to clamp the blank section against a pad bar, and positions the end of the tooth through a displacement slider and a sliding detection device. In actual use, after the tooth detection device detects the blank section, it controls the stop bar to descend and clamp it through a delay. When the protrusion of the zipper tape (tooth, or top stop) contacts the stop bar, the displacement slider slides and the detection device confirms the position. However, this solution has shortcomings: the realization of the delay control depends on the zipper travel speed and the distance between the detection device and the positioning mechanism, which requires repeated debugging to achieve the ideal effect. The debugging process is time-consuming and unstable. At the same time, the inertia during the zipper traction process and the equipment operation error can easily cause the clamping position to deviate, which may result in the zipper being mistakenly clamped on the tooth, especially when the blank section (tooth gap) is short, causing damage to the tooth and affecting the positioning accuracy. In severe cases, it may lead to the scrapping of the product. Utility Model Content

[0003] The purpose of this invention is to provide a zipper positioning mechanism that is accurate in positioning, easy to debug, and highly adaptable.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0005] A zipper positioning mechanism includes a pad and a pressure block slidably connected to a support rod. A push block is provided on the pressure block, and an elastic component is disposed between the push block and the pressure block. The push block is connected to a power device, which pushes the push block. The push block, through the elastic component, pushes the pressure block to slide on the support rod. The pressure block presses the zipper tape protrusion (chain tooth or bottom stop) onto the pad, causing the elastic component to deform under force. After the pressure block disengages from the protrusion support, the elastic component resets, allowing the pressure block to slide on the support rod and approach the pad. The support rod is slidably connected to a fixed seat, and the support rod is equipped with a displacement detection device for detecting the displacement of the support rod on the fixed seat.

[0006] When in use, the zipper moves between the pad and the pressure block. The power unit pushes the push block, which drives the pressure block to slide vertically on the support rod through the elastic component. The pressure block presses the protrusion (chain tooth or bottom stop) of the zipper belt onto the pad. At this time, the elastic component deforms under force, and the protrusion is supported between the pressure block and the pad.

[0007] When the blank segment of the chain tooth travels between the pressure block and the pad, the pressure block disengages from the support of the protrusion, and the elastic component deforms and resets, causing the pressure block to slide vertically on the support rod. The pressure block moves closer to the pad, pressing the blank segment of the chain tooth onto the pad, or there is a gap between the pressure block and the pad. At this time, the end of the pressure block is lower than the height of the protrusion (the distance between the pressure block and the pad is less than the thickness of the protrusion), and the pressure block can resist the protrusion of the next segment.

[0008] As the zipper continues to move, the end of the rear protrusion contacts the pressure block, causing the protrusion to push the pressure block laterally across the pad. At this point, the support rod slides laterally on the fixed seat. Once the displacement detection device detects the lateral sliding of the support rod, the zipper stops moving, and the end of the rear protrusion can be located based on the position of the pressure block.

[0009] Furthermore, the pressing block has a push block sliding groove, the push block is located in the push block sliding groove, and the push block slides along the push block sliding groove.

[0010] In order to achieve automatic sliding reset of the support rod on the fixed seat, a reset elastic component is provided between the support rod and the fixed seat, which allows the support rod to slide and reset on the fixed seat.

[0011] Furthermore, in order to make the pad and the pressure block move synchronously, the support rod is connected to the pad, and the pad is slidably connected to the fixed seat.

[0012] In order to press the zipper on the pad block tightly with the pressure block and prevent the zipper from shifting between the pressure block and the pad block after the end of the protrusion is positioned, the pressure block is provided with a pressure rod, and the pressure block is connected to a pressing power device, which drives the pressure rod to press on the pressure block.

[0013] As another method for positioning the end of the zipper tape protrusion, the zipper positioning mechanism includes a pad and a push block slidably connected to a support rod. A pressure block is slidably mounted on the push block, and an elastic component is positioned between the pressure block and the push block. The push block is connected to a power device, which pushes the push block to slide on the support rod. The push block drives the pressure block, which presses the zipper tape protrusion (chain tooth or bottom stop) onto the pad. The pressure block slides on the push block, and the elastic component deforms under force. After the pressure block disengages from the protrusion support, the elastic component resets, causing the pressure block to slide on the push block and move closer to the pad. The support rod is slidably connected to a fixed seat, and the support rod is equipped with a displacement detection device for detecting the displacement of the support rod on the fixed seat.

[0014] When in use, the zipper moves between the pad and the pressure block. The power unit pushes the push block to slide vertically on the support rod. The pressure block moves vertically with the push block. The pressure block presses the protrusion (chain tooth or bottom stop) of the zipper belt onto the pad. At this time, the pressure block slides vertically on the push block. The elastic component is deformed by force, and the protrusion is supported between the pressure block and the pad.

[0015] When the blank segment of the chain tooth travels between the pressure block and the pad, the pressure block disengages from the support of the protrusion, and the elastic component deforms and resets, causing the pressure block to slide vertically on the push block. The pressure block moves closer to the pad, pressing the blank segment of the chain tooth onto the pad, or there is a gap between the pressure block and the pad. At this time, the end of the pressure block is lower than the height of the protrusion (the distance between the pressure block and the pad is less than the thickness of the protrusion), and the pressure block can resist the protrusion of the next segment.

[0016] As the zipper continues to move, the end of the next protruding section contacts the pressure block, causing the protrusion to push the pressure block to move on the pad. At this point, the support rod slides laterally on the fixed seat. Once the displacement detection device detects the lateral sliding of the support rod, the zipper stops moving, and the end of the next protruding section can be located based on the position of the pressure block.

[0017] In order to achieve automatic sliding reset of the support rod on the fixed seat, a reset elastic component is provided between the support rod and the fixed seat, which allows the support rod to slide and reset on the fixed seat.

[0018] To prevent zipper wear and to ensure synchronous displacement of the pad and pressure block, the support rod is connected to the pad, and the pad is slidably connected to the fixed base.

[0019] As another method for positioning the protruding end of the zipper tape, the zipper positioning mechanism includes a pad and a push block slidably connected to a support rod. The push block is slidably connected to an intermediate block, which is equipped with a displacement detection device. A pressure block is slidably connected to the intermediate block, and an elastic component is provided between the pressure block and the intermediate block. The push block is equipped with a power device, which pushes the push block to slide vertically on the support rod. The push block drives the pressure block through the intermediate block, and the pressure block presses the protruding part (chain tooth or bottom stop) of the zipper tape onto the pad. The pressure block slides vertically on the intermediate block, and the elastic component deforms under force. After the pressure block is disengaged from the support of the protruding part, the elastic component resets, causing the pressure block to slide on the intermediate block and move closer to the pad. The protruding part pushes the pressure block, and the pressure block drives the intermediate block to slide laterally on the push block. The displacement detection device is used to detect the lateral sliding of the intermediate block on the push block.

[0020] When in use, the zipper moves between the pad and the pressure block. The power unit pushes the push block to slide vertically on the support rod. The middle block and the pressure block follow the displacement of the push block. The pressure block presses the protrusion (chain tooth or bottom stop) of the zipper belt onto the pad. At this time, the pressure block slides vertically on the middle block. The elastic component is deformed by force, and the protrusion is supported between the pressure block and the pad.

[0021] When the blank segment of the chain tooth travels between the pressure block and the pad, the pressure block disengages from the support of the protrusion, and the elastic component deforms and resets, causing the pressure block to slide vertically on the middle block. The pressure block moves closer to the pad, pressing the blank segment of the chain tooth onto the pad, or there is a gap between the pressure block and the pad. At this time, the end of the pressure block is lower than the height of the protrusion (the distance between the pressure block and the pad is less than the thickness of the protrusion), and the pressure block can resist the protrusion of the next segment.

[0022] As the zipper continues to move, the end of the next protruding section contacts the pressure block, pushing it and causing the pressure block to slide laterally across the pad. Once the displacement detection device detects this lateral sliding of the middle block, the zipper stops moving. Then, based on the position of the pressure block, the end of the next protruding section can be located.

[0023] In order to achieve automatic sliding reset of the intermediate block on the push block, a reset elastic component is provided between the intermediate block and the push block, which enables the intermediate block to slide and reset on the push block.

[0024] As another method for positioning the protruding end of the zipper tape, the zipper positioning mechanism includes a pad and a push block slidably connected to a support rod. An intermediate block is slidably connected to the push block, and an elastic component is disposed between the intermediate block and the push block. A pressure block is slidably connected to the intermediate block, and the pressure block is equipped with a displacement detection device. The push block is equipped with a power device, which pushes the push block to slide vertically on the support rod. The push block drives the pressure block through the intermediate block, and the pressure block presses the protruding part of the zipper tape (chain teeth or bottom stops) onto the pad. The intermediate block slides vertically on the push block, and the elastic component deforms under force. After the pressure block disengages from the protruding support, the elastic component resets, causing the intermediate block to slide on the pad. The intermediate block then drives the pressure block to approach the pad. The protruding part pushes the pressure block, and the pressure block slides laterally on the intermediate block. The displacement detection device is used to detect the lateral sliding of the pressure block on the intermediate block.

[0025] When in use, the zipper moves between the pad block and the pressure block. The power unit pushes the push block to slide vertically on the support rod. The middle block and the pressure block follow the displacement of the push block. The pressure block presses the convex part (chain tooth or bottom stop) of the zipper belt onto the pad block. At this time, the middle block slides vertically on the push block. The elastic part is deformed by force, and the convex part is supported between the pressure block and the pad block.

[0026] When the blank segment of the chain tooth travels between the pressure block and the pad block, the pressure block disengages from the support of the protrusion, and the elastic component deforms and resets, causing the middle block to slide vertically and reset on the push block. The pressure block moves closer to the pad block, pressing the blank segment of the chain tooth onto the pad block, or there is a gap between the pressure block and the pad block. At this time, the end of the pressure block is lower than the height of the protrusion (the distance between the pressure block and the pad block is less than the thickness of the protrusion), and the pressure block can resist the protrusion of the next segment.

[0027] As the zipper continues to move, the end of the next protruding section contacts the pressure block, pushing it and causing the pressure block to slide laterally on the middle block. Once the displacement detection device detects this lateral sliding, the zipper stops moving, and the end of the next protruding section can be located based on the position of the pressure block.

[0028] In order to achieve automatic sliding reset of the pressure block on the intermediate block, a reset elastic component is provided between the pressure block and the intermediate block, which allows the pressure block to slide and reset on the intermediate block.

[0029] This invention utilizes the synergistic action of a pressure block and an elastic component to directly press the protrusions (such as chain teeth or bottom stops) of the chain tape. The elastic component's reset mechanism drives the pressure block to apply secondary pressure, thereby precisely positioning the blank section of the chain tooth. Simultaneously, by detecting the lateral displacement of the pressure block, the end of the chain tooth can be precisely located. This solution effectively avoids the clamping offset problem caused by traditional delay control and prevents accidental clamping of chain teeth (especially suitable for short blank sections), significantly reducing chain tooth damage and product scrap rate. Furthermore, it improves equipment debugging efficiency. Attached Figure Description

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 This is a front view of the zipper positioning mechanism.

[0032] Figure 2 Rear view of the zipper positioning mechanism.

[0033] Figure 3 Rear view of the zipper positioning mechanism (with the zipper plate hidden).

[0034] Figure 4 This is a schematic diagram of the push block and the press block in Example 2.

[0035] Figure 5 This is a schematic diagram of the push block, middle block, and pressure block in Example 3.

[0036] Figure 6 This is a schematic diagram of the push block, middle block, and pressure block in Example 4.

[0037] Figure 7 This is a schematic diagram of the cross-sections of the push block, intermediate block, and pressure block in Example 4. Detailed Implementation

[0038] It should be noted that, Figure 1 This is a front view of the usage status. Figure 2 , 3 5, 6, and 7 are all rear views in the usage state. For ease of understanding, the top, bottom, left, and right in the embodiments are described based on the rear views.

[0039] Example 1

[0040] like Figure 1-3As shown, the zipper positioning mechanism includes a pad 1 and a pressure block 2 at the end of the zipper plate 111. The pad 1 is slidably connected to the fixed base 7 and slides laterally left and right on the fixed base 7. A slide rail 11 is provided at the bottom of the pad 1, and a slide groove 12 is provided at the top of the fixed base 7. The slide rail 11 is located in the slide groove 12. The pad 1 slides left and right along the slide groove 12 on the fixed base 7, moving away from / closer to the zipper plate 111. Of course, other common sliding methods can also be used between the pad 1 and the fixed base 7. For example, the fixed base 7 has a protrusion at the top, and the pad 1 has a groove at the bottom. The protrusion is located in the groove, and the pad 1 slides left and right along the protrusion on the fixed base 7.

[0041] The slide rail 11 is equipped with a photoelectric switch 71 (or other displacement detection sensor). The photoelectric switch 71 is mounted on the fixed base 7 and is used to detect the sliding of the slide rail 11 on the fixed base 7, that is, to detect the lateral sliding of the pad 1. Of course, the photoelectric switch 71 can also be set in other positions, as long as it can detect the lateral sliding of the pad 1.

[0042] The slide rail 11 is equipped with a return spring (not shown in the figure), and a crossbar (such as...) is provided on the slide rail 11. Figure 3 As shown, the fixed seat 7 is located between the pad 1 and the crossbar, and the return spring is supported between the crossbar and the fixed seat 7. When the pad 1 slides away from the overpass plate 111 along the slide groove 12, the return spring is compressed and deformed; the return spring returns to its original shape, causing the pad 1 to slide closer to the overpass plate 111 along the slide groove 12 and return to its original position. Of course, the return spring can also be other elastic components of the same type. Of course, the return spring can adopt other common connection methods to allow the pad 1 to slide closer to the overpass plate 111 along the slide groove 12 and return to its original position.

[0043] A support rod 3 is mounted on the pad 1, and a pressure block 2 is slidably connected to the support rod 3. A slide rail 22 is mounted on the support rod 3, and a slide groove 21 is mounted on the pressure block 2. The slide rail 22 is located within the slide groove 21. The pressure block 2 slides up and down on the support rod 3 along the slide rail 22, moving away from / closer to the pad 1. Of course, other common sliding methods can also be used between the pressure block 2 and the support rod 3. For example, the support rod 3 is provided with a protrusion, and the pressure block 2 has a groove, with the protrusion located within the groove. The pressure block 2 slides up and down on the support rod 3 along the protrusion.

[0044] The pressure block 2 is slidably connected to the push block 4. The pressure block 2 has a push block sliding groove 41. The push block 4 is located in the push block sliding groove 41. The push block 4 slides up and down on the pressure block 2 along the push block sliding groove 41. Of course, other common sliding methods can also be used between the push block 4 and the pressure block 2.

[0045] A spring (or other similar elastic component) is provided below the push block 4. The spring is located inside the push block sliding groove 41, with its upper end supported on the push block 4 and its lower end supported on the lower inner wall of the push block sliding groove 41. To limit the movement of the spring, spring holes can also be provided on the push block 4 and the push block sliding groove 41, with the upper end of the spring located inside the spring hole of the push block 4 and the lower end of the spring located inside the spring hole of the push block sliding groove 41.

[0046] A cylinder 5 (or other similar power device) is installed above the push block 4. The cylinder 5 is connected to the support rod 3. The cylinder 5 pushes the push block 4, and the push block 4 drives the pressure block 2. The pressure block 2 slides up and down on the support rod 3 along the slide rail 22.

[0047] When in use, the zipper moves between pad 1 and pressure block 2. Cylinder 5 pushes push block 4 downward. Push block 4 drives pressure block 3 to slide downward along slide rail 22 (on support rod 3) through spring. Pressure block 2 presses the chain teeth on the zipper belt onto pad 1. At this time, the spring is deformed by force, and the chain teeth are supported between pressure block 2 and pad 1.

[0048] When the blank segment of the chain tooth travels between the pressure block 2 and the pad block 1, the pressure block 2 disengages from the support of the chain tooth, and the spring returns to its original state, pushing the pressure block 3 to slide downward along the slide rail 22 (on the support rod 3). The pressure block 2 moves closer to the pad block 1, pressing the blank segment of the chain tooth onto the pad block 1, or there is a gap between the pressure block 2 and the pad block 1. At this time, the end of the pressure block 2 is lower than the height of the chain tooth (the gap between the pressure block 2 and the pad block 1 is less than the thickness of the chain tooth), and the pressure block 2 can resist the chain tooth of the next segment.

[0049] As the zipper continues to move, the end of the next chain tooth contacts the pressure block 2. The chain tooth pushes the pressure block 2, which in turn drives the pad 1 via the support rod 3. The slide rail 11 slides to the left along the slide groove 12 on the fixed block 7. The pad 1 moves away from the end of the chain plate 111. At this time, the return spring is compressed and deformed. After the photoelectric switch 71 detects the displacement of the slide rail 11, the zipper stops moving. Then, based on the position of the pressure block 2, the end of the next chain tooth can be located.

[0050] Cylinder 5 drives push block 4 to move upward and reset. Push block 4 drives pressure block 2 to slide upward and reset along slide rail 22 (on support rod 3). Pressure block 2 moves away from pad 1. Reset spring returns to its original state, causing pad 1 to slide to the right along slide groove 12 on fixed block 7 and reset. Pad 1 moves close to over-chain plate 111 and resets.

[0051] To ensure that the pressure block 2 presses the zipper on the pad block 1 firmly and prevents the zipper from shifting between the pressure block 2 and the pad block 1 after the zipper teeth are positioned, a pressure rod 61 is installed above the pressure block 2. The pressure rod 61 is connected to a cylinder 6 (or other similar power device). The cylinder 6 pushes the pressure rod 61 closer to / away from the pressure block 2, and the pressure rod 61 presses against the pressure block 2, preventing the pressure block 2 from shifting upward. Alternatively, the pressure rod 61 can be the piston rod of the cylinder 6, with the piston rod of the cylinder 6 pressing against the pressure block 2 to prevent the pressure block 2 from shifting upward.

[0052] Of course, the pad 1 may not move laterally synchronously with the pressure block 2. Specifically, the pad 1 is located at the end of the chain plate 111, or is part of the chain plate 111. The support rod 3 is slidably connected to the fixed seat 7. A transverse slide rail is provided on the support rod 3, and a transverse slide groove is provided on the fixed seat 7. The transverse slide rail is located in the transverse slide groove. The transverse slide rail slides along the transverse slide groove, causing the support rod 3 to slide laterally on the fixed seat 7. The photoelectric switch 71 is used to detect the displacement of the support rod 3 or the transverse slide rail. After the end of the last chain tooth contacts the pressure block 2, the chain tooth pushes the pressure block 2, and the pressure block 2 moves to the left on the pad 1. At this time, the transverse slide rail slides to the left along the transverse slide groove. After the photoelectric switch 71 detects the displacement of the support rod 3 or the transverse slide rail, the zipper stops moving. Then, according to the position of the pressure block 2, the end of the last chain tooth can be located. Of course, in order to realize the transverse slide rail sliding to the right and resetting along the transverse slide groove, the transverse slide rail is also provided with a reset spring. The reset spring drives the transverse slide rail to slide to the right and resetting along the transverse slide groove.

[0053] Example 2

[0054] Unlike Embodiment 1, the push block 811 is slidably connected to the support rod, and the pressure block 813 is slidably connected to the push block 811, as shown below. Figure 4 As shown, a pressing block groove 812 is provided on the push block 811, the pressing block 813 is located in the pressing block groove 812, and the spring 814 is provided in the pressing block groove 812. The lower end of the spring 814 is supported on the pressing block 813, and the upper end of the spring 814 is supported on the inner wall of the pressing block groove 812. The lower end of the pressing block 813 extends out of the pressing block groove 812. Of course, other common sliding methods can also be used between the pressing block 813 and the push block 811.

[0055] When in use, the zipper moves between the pad 1 and the pressure block 813. The cylinder 5 pushes the push block 811 to slide downward along the slide rail 22 (on the support rod 3). The push block 811 drives the pressure block 813 to move downward. The pressure block 813 presses the chain teeth on the zipper belt onto the pad 1. At this time, the spring 814 is deformed by force, and the chain teeth are supported between the pressure block 813 and the pad 1.

[0056] When the blank segment of the chain tooth travels between the pressure block 813 and the pad block 1, the pressure block 813 disengages from the support of the chain tooth, and the spring returns to its original state, pushing the pressure block 813 to slide downward along the pressure block groove 812. The pressure block 813 moves closer to the pad block 1, pressing the blank segment of the chain tooth onto the pad block 1, or there is a gap between the pressure block 813 and the pad block 1. At this time, the end of the pressure block 813 is lower than the height of the chain tooth (the gap between the pressure block 813 and the pad block 1 is less than the thickness of the chain tooth), and the pressure block 813 can resist the chain tooth of the next segment.

[0057] As the zipper continues to move, the end of the next chain tooth contacts the pressure block 813. The chain tooth pushes the pressure block 813, which in turn drives the pad 1 via the support rod 3. The slide rail 11 slides to the left along the slide groove 12 on the fixed block 7, and the pad 1 moves away from the end of the chain plate 111. At this time, the return spring is compressed and deformed. After the photoelectric switch 71 detects the displacement of the slide rail 11, the zipper stops moving. Then, based on the position of the pressure block 2, the end of the next chain tooth can be located.

[0058] Cylinder 5 drives push block 811 to move upward and reset. Push block 811 drives pressure block 813 to slide upward and reset along slide rail 22 (on support rod 3). Pressure block 813 moves away from pad 1. Reset spring returns to its original state, causing pad 1 to slide to the right along slide groove 12 on fixed block 7 and reset. Pad 1 moves closer to over-chain plate 111.

[0059] Example 3

[0060] like Figure 5 As shown, the zipper positioning mechanism includes a pad block and a pressure block 836. The pressure block 836 is slidably connected to the intermediate block 833 and slides vertically (up and down) on the intermediate block 833. A pressure block groove 835 is provided on the intermediate block 833. The top of the pressure block 836 is located within the pressure block groove 835 and slides up and down along it. A spring 837 (or other similar elastic component) is provided within the pressure block groove 835. The lower end of the spring 837 is supported on the pressure block 836, and the upper end is supported on the inner wall of the pressure block groove 835. Of course, other common sliding methods can also be used to connect the pressure block 836 and the intermediate block 833.

[0061] The intermediate block 833 is slidably connected to the push block 831. The intermediate block 833 slides laterally (left and right) on the push block 831. The push block 831 is provided with an intermediate block groove 832. The top of the intermediate block 833 is located in the intermediate block groove 832 and slides left and right along the intermediate block groove 832. A spring 834 (or other similar elastic component) is provided in the intermediate block groove 832. The right end of the spring 834 is supported on the intermediate block 833, and the left end of the spring 834 is supported on the inner wall of the intermediate block groove 832. Of course, other common sliding methods can also be used to connect the intermediate block 833 and the push block 831.

[0062] The intermediate block 833 is equipped with a photoelectric switch (or other displacement detection sensor). The photoelectric switch is located on the push block 831 and is used to detect the displacement of the intermediate block 833 on the push block 831.

[0063] Push block 831 is slidably connected to support rod. Push block 831 is connected to cylinder (or other power device). The cylinder pushes push block 831 to slide up and down on support rod, so that pressure block 836 moves closer to / away from pad block.

[0064] In use, the zipper moves between the pad block and the pressure block 836. The cylinder pushes the push block 831 to slide downward on the support rod. The middle block 833 and the pressure block 836 follow the push block 831 to move downward. The pressure block 836 presses the zipper belt protrusion (chain tooth or bottom stop) onto the pad block. At this time, the pressure block 826 slides vertically on the middle block 833. The spring 835 is deformed by force, and the protrusion is supported between the pressure block 836 and the pad block.

[0065] When the blank segment of the chain tooth travels between the pressure block 836 and the pad, the pressure block 836 disengages from the support of the protrusion, the spring 835 returns to its original state, the pressure block 836 slides downward on the middle block 833, the pressure block 836 moves closer to the pad, pressing the blank segment of the chain tooth onto the pad, or there is a gap between the pressure block 836 and the pad. At this time, the end of the pressure block 836 is lower than the height of the protrusion (the distance between the pressure block 836 and the pad is less than the thickness of the protrusion), and the pressure block 836 can resist the protrusion of the next segment.

[0066] As the zipper continues to move, the end of the rear protrusion contacts the pressure block 836. The protrusion pushes the pressure block 836, which in turn causes the middle block 833 to slide to the left on the pad 831. At this point, the spring 834 deforms under pressure. After the photoelectric switch detects the lateral sliding of the middle block 831, the zipper stops moving. Then, based on the position of the pressure block 836, the end of the rear protrusion can be located.

[0067] The cylinder pushes the push block 831 to slide upward on the support rod to reset, the spring 834 returns to its original state, and the middle block 833 slides to the right on the pad block 831 to reset.

[0068] Example 4

[0069] The zipper positioning mechanism includes a pad block and a pressure block 826. The pressure block 826 is slidably connected to the middle block 823 and slides laterally (left and right) on the middle block 823. A pressure block groove 825 is provided on the middle block 823. The top of the pressure block 826 is located within the pressure block groove 825 and slides left and right along the groove. A spring 827 (or other similar elastic component) is provided within the pressure block groove 825. The right end of the spring 827 is supported on the pressure block 826, and the left end is supported on the inner wall of the pressure block groove 825. Alternatively, other common sliding methods can be used to connect the pressure block 826 and the middle block 823.

[0070] The pressure block 826 is equipped with a photoelectric switch 828 (or other displacement detection sensor). The photoelectric switch 828 is located on the intermediate block 823 and is used to detect the lateral displacement of the pressure block 826 on the intermediate block 823.

[0071] The intermediate block 823 is slidably connected to the push block 821. The intermediate block 823 slides vertically (up and down) on the push block 821. The push block 821 is provided with an intermediate block groove 822. The top of the intermediate block 823 is located in the intermediate block groove 822 and slides up and down along the intermediate block groove 822. A spring 824 (or other similar elastic component) is provided in the intermediate block groove 822. The lower end of the spring 824 is supported on the intermediate block 823, and the upper end of the spring 824 is supported on the inner wall of the intermediate block groove 822. Of course, other common sliding methods can also be used to connect the intermediate block 823 and the push block 821.

[0072] Push block 821 is slidably connected to support rod. Push block 821 is connected to cylinder (or other power device). The cylinder pushes push block 821 to slide vertically (up and down) on support rod, so that pressure block 826 moves closer to / away from pad block.

[0073] In use, the zipper moves between the pad block and the pressure block 826. The cylinder pushes the push block 821 to slide downward on the support rod. The middle block 823 and the pressure block 826 follow the push block 821 to move downward. The pressure block 826 presses the protrusion (chain tooth or bottom stop) on the zipper belt onto the pad block. At this time, the middle block 823 slides vertically on the push block 821. The spring 824 is deformed by force, and the protrusion is supported between the pressure block 826 and the pad block.

[0074] When the blank segment of the chain tooth travels between the pressure block 826 and the pad, the pressure block 826 disengages from the support of the protrusion, the spring 824 returns to its original state, the middle block 823 slides downward on the push block 821, the pressure block 826 moves closer to the pad, pressing the blank segment of the chain tooth onto the pad, or there is a gap between the pressure block 826 and the pad. At this time, the end of the pressure block 826 is lower than the height of the protrusion (the gap between the pressure block and the pad is less than the thickness of the protrusion), and the pressure block 826 can resist the protrusion of the next segment.

[0075] As the zipper continues to move, the end of the rear protrusion contacts the pressure block 826, pushing the pressure block 826. The pressure block 928 slides to the left on the middle block 823, at which point the spring 827 is compressed and deformed. After the photoelectric switch 827 detects the lateral sliding of the pressure block 826, the zipper stops moving. Then, based on the position of the pressure block 826, the end of the rear protrusion can be located.

[0076] The cylinder pushes the push block 831 to slide upwards on the support rod to reset, the spring 827 returns to its original state, and the pressure block 826 slides to the right on the middle block 823 to reset.

[0077] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A zipper positioning mechanism, characterized in that: The device includes a pad and a pressure block slidably connected to a support rod. The pressure block is equipped with a push block, and an elastic component is disposed between the push block and the pressure block. The push block is connected to a power device, which pushes the push block. The push block pushes the pressure block to slide on the support rod through the elastic component. The pressure block presses the protrusion of the chain belt onto the pad, and the elastic component deforms under force. After the pressure block is disengaged from the support of the protrusion, the elastic component returns to its original position, allowing the pressure block to slide on the support rod and move closer to the pad. The support rod is slidably connected to a fixed seat, and the support rod is equipped with a displacement detection device, which is used to detect the displacement of the support rod on the fixed seat.

2. The zipper positioning mechanism according to claim 1, characterized in that: The pressing block has a push block sliding groove, the push block is located in the push block sliding groove, and the push block slides along the push block sliding groove.

3. The zipper positioning mechanism according to claim 1, characterized in that: The pressure block is equipped with a pressure rod, and the pressure block is connected to a pressing power device, which drives the pressure rod to press against the pressure block.

4. A zipper positioning mechanism, characterized in that: The device includes a pad and a push block slidably connected to a support rod. A pressure block is slidably mounted on the push block, and an elastic component is positioned between the pressure block and the push block. The push block is connected to a power device, which pushes the push block to slide on the support rod. The push block drives the pressure block, which presses the protrusion of the chain strap onto the pad. The pressure block slides on the push block, and the elastic component deforms under force. After the pressure block disengages from the protrusion support, the elastic component resets, causing the pressure block to slide on the push block and approach the pad. The support rod is slidably connected to a fixed seat, and the support rod is equipped with a displacement detection device for detecting the displacement of the support rod on the fixed seat.

5. The zipper positioning mechanism according to any one of claims 1-4, characterized in that: A reset elastic component is provided between the support rod and the fixed base, which allows the support rod to slide and reset on the fixed base.

6. The zipper positioning mechanism according to any one of claims 1-4, characterized in that: The support rod is connected to the pad, and the pad is slidably connected to the fixed seat.

7. A zipper positioning mechanism, characterized in that: The device includes a pad block and a push block slidably connected to a support rod. The push block is slidably connected to an intermediate block, which is equipped with a displacement detection device. A pressure block is slidably connected to the intermediate block, and an elastic component is positioned between the pressure block and the intermediate block. The push block is equipped with a power device that drives the push block to slide vertically on the support rod. The push block drives the pressure block via the intermediate block, and the pressure block presses the protrusion of the chain tape onto the pad block. The pressure block slides vertically on the intermediate block, and the elastic component deforms under force. After the pressure block disengages from the protrusion support, the elastic component resets, causing the pressure block to slide on the intermediate block, bringing it closer to the pad block. The protrusion pushes the pressure block, and the pressure block drives the intermediate block to slide laterally on the push block. The displacement detection device is used to detect the lateral sliding of the intermediate block on the push block.

8. The zipper positioning mechanism according to claim 7, characterized in that: A reset elastic component is provided between the intermediate block and the push block, which allows the intermediate block to slide and reset on the push block.

9. A zipper positioning mechanism, characterized in that: The device includes a pad block and a push block slidably connected to a support rod. An intermediate block is slidably connected to the push block, and an elastic component is disposed between the intermediate block and the push block. A pressure block is slidably connected to the intermediate block, and the pressure block is equipped with a displacement detection device. The push block is equipped with a power device that pushes the push block to slide vertically on the support rod. The push block drives the pressure block through the intermediate block, and the pressure block presses the protrusion of the chain tape onto the pad block. The intermediate block slides vertically on the push block, and the elastic component deforms under force. After the pressure block disengages from the protrusion support, the elastic component resets, causing the intermediate block to slide on the pad block. The intermediate block drives the pressure block to approach the pad block. The protrusion pushes the pressure block, and the pressure block slides laterally on the intermediate block. The displacement detection device is used to detect the lateral sliding of the pressure block on the intermediate block.

10. The zipper positioning mechanism according to claim 9, characterized in that: A reset elastic component is provided between the pressure block and the intermediate block, which allows the pressure block to slide and reset on the intermediate block.

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