Drawing device for magic hook production

Abstract

The utility model discloses a drawing device for magic hook production, which belongs to the field of magic hook production and comprises a drawing test board. A linear lead screw module is assembled on the drawing test bench, and a tensile machine body is assembled on the linear lead screw module; a tension bar is arranged at the bottom of the tensile machine body; a magic hook clamp is mounted at the end part of the tension bar. According to the drawing device for producing the magic hook, through mutual movement matching of a plurality of structures arranged in the magic hook clamp, the arranged magic hook clamp can clamp a magic hook body in a shape like a Chinese character'ji ', the clamping in the shape like the Chinese character'ji' can enable a loop surface body of a magic tape to be in contact with the magic hook body more uniformly, and during a drawing test, the drawing effect of the magic hook body is improved. The tensile force can be more uniformly distributed on the bonding surface of the hook-and-loop fastener hair surface body and the hook-and-loop fastener body, the situation that local stress is too large or too small is avoided, and therefore drawing force data obtained through testing can more truly reflect the actual bonding performance of the hook-and-loop fastener body.

Description

Technical Field

[0001] This utility model belongs to the field of magic hook production, and specifically relates to a pulling device for magic hook production. Background Technology

[0002] Hook and loop fasteners, also known as Velcro or Velcro tape, are a common fastening accessory. The Velcro closure has two sides: one side is made of fine, soft fibers, called loops, and the other side is made of stiffer, hooked fibers. When the loop side comes into contact with the hook side, the small hooks on the hook side catch the fibers of the loop side, thus forming a strong bond. When the hook side separates from the loop side, the hooks return to their original shape without leaving any residue.

[0003] "Hook and loop fastener" usually refers to the side of hook and loop fastener that has hooks or loops. It is generally made of polymer and nylon materials, but water-based polyurethane slurry is also sometimes used. For example, injection-molded hooks are a special high-end hook and loop fastener surface, which is injection molded from polymer and nylon materials and is available in both transparent and opaque materials.

[0004] Pull-out tests in the production of Velcro hooks are used to assess the performance of Velcro hooks. They test the strength of the bond between the hook and the fabric or other connecting materials, determining whether it can withstand the corresponding tensile force without separating during actual use. For example, in clothing applications, to ensure that the Velcro hook does not easily come undone during wearing and washing, pull-out tests can determine whether the manufacturing quality of the Velcro hook is up to standard and meets design and usage requirements. This helps companies identify problems in the production process in a timely manner, such as material defects or improper manufacturing processes.

[0005] Traditionally, pull tests on hook and loop fabrics involve using clamps on a tensile testing machine to hold and position the hook and loop, then bonding it to the fabric surface. The machine is then slowly pulled to obtain a pull test result between the hook and the fabric. However, due to variations in fabric thickness, the hook and fabric may not fully bond during the bonding and pulling process, resulting in inaccurate testing. Therefore, this paper proposes a pull test device for hook and loop fabric production to address this issue. Utility Model Content

[0006] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a pulling device for the production of magic hooks, which has the advantage of being able to clamp the magic hooks and make them fully contact the rough surface for pulling tests.

[0007] To achieve the above objectives, this utility model provides a drawing device for the production of magic hooks, including a drawing test bench;

[0008] A linear screw module is assembled and set on the drawing test bench, and a tensile testing machine body is assembled and set on the linear screw module;

[0009] A tensile rod is arranged at the bottom of the tensile testing machine body, and a magic hook clamp is installed at the end of the tensile rod; [[ID=*5]]

[0010] A test bench plate is installed on the upper end surface of the drawing test bench, and two rough surface clamps are arranged on the upper end surface of the test bench plate;

[0011] Among them, the magic hook clamp includes a clamp table arranged on the tensile testing machine body. The clamp table is arranged in a U shape, and a positive and reverse thread screw rod is rotatably arranged horizontally inside it. Two clamping plates are meshed and arranged outside the positive and reverse thread screw rod;

[0012] A central beam is installed at the center of the clamp table, and a convex block is installed at the bottom of the central beam. The convex block is arranged between the two clamping plates and its bottom is lower than the two clamping plates;

[0013] The rough surface clamp includes two optical rods arranged on the upper end surface of the test bench plate. A pressing plate is slidably arranged together outside the two optical rods.

[0014] As a further improvement of the present utility model, a magic hook body is surrounded at the bottom of the convex block, and the magic hook body is installed in a "ji" shape between the bottom of the convex block and the two clamping plates.

[0015] As a further improvement of the present utility model, one end of the positive and reverse thread screw rod penetrates through the clamp table and is extended and connected with a rotating shaft handle. Two side rods are also installed on the clamp table. The two side rods are respectively arranged on one side of the positive and reverse thread screw rod, and both of the two side rods penetrate through the clamping plate and are slidably connected with it.

[0016] As a further improvement of the present utility model, cross beams are installed at the tops of the optical rods in the two rough surface clamps. A guide rod cylinder is assembled and set on the cross beam. The output end of the guide rod cylinder penetrates through the cross beam and extends to be connected with the top of the pressing plate.

[0017] As a further improvement of the present utility model, a magic tape rough surface body is laid on the upper end surface of the test bench plate, and both ends of the magic tape rough surface body are laid at the bottom of the two pressing plates.

[0018] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the beneficial effects include:

[0019] This utility model discloses a pull-out device for producing hook and loop fasteners. Through the coordinated movement of multiple structures within the hook and loop fastener clamp, the clamp can hold the hook and loop body in a "U" shape. This "U"-shaped clamping ensures more uniform contact between the hook and loop fastener body and the hook and loop body. During pull-out testing, the tensile force is more evenly distributed on the bonding surface between the hook and loop fastener body and the hook and loop body, avoiding excessive or insufficient localized force. This results in pull-out force data that more accurately reflects the actual bonding performance of the hook and loop body. Conventional planar clamping may cause differences in bonding between the edges and the center, creating an edge effect that affects the accuracy of the pull-out test results. The "U"-shaped clamping of this hook and loop fastener effectively reduces this edge effect, making the pull-out test results more representative and thus effectively testing the production data between the hook and loop fastener body and the hook and loop body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall installation structure of the rough-surface clamp of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall installation structure of the magic hook clamp of this utility model.

[0023] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Pull-out test stand; 11. Test stand plate; 2. Linear lead screw module; 3. Tensile testing machine body; 4. Magic hook clamp; 41. Clamping table; 42. Positive and negative threaded lead screw; 43. Clamping plate; 44. Center beam; 45. Protrusion; 46. Rotary shaft handle; 47. Side rod; 5. Textured clamp; 51. Smooth rod; 52. Crossbeam; 53. Guide rod cylinder; 54. Pressure plate; 6. Velcro textured body; 7. Magic hook body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Depend on Figure 1-3 A drawing device for producing magic hooks is provided, including a drawing test bench 1;

[0027] A linear ball screw module 2 is assembled and set on a drawing test bench 1, and a tensile testing machine body 3 is assembled and set on the linear ball screw module 2;

[0028] A tensile rod is provided at the bottom of the tensile testing machine body 3, and a magic hook clamp 4 is installed at the end of the tensile rod;

[0029] A test bench plate 11 is installed on the upper end surface of the drawing test bench 1, and two rough surface clamps 5 are provided on the upper end surface of the test bench plate 11;

[0030] Among them, the magic hook clamp 4 includes a clamp table 41 provided on the tensile testing machine body 3. The clamp table 41 is U-shaped, and a positive and negative thread screw rod 42 is rotatably provided along its transverse direction inside it. Two clamping plates 43 are externally engaged with the positive and negative thread screw rod 42;

[0031] A central beam 44 is installed at the center of the clamp table 41. A convex block 45 is installed at the bottom of the central beam 44. The convex block 45 is arranged between the two clamping plates 43 and its bottom is lower than the two clamping plates 43;

[0032] The rough surface clamp 5 includes two optical rods 51 provided on the upper end surface of the test bench plate 11. A pressing plate 54 is slidably arranged on the outside of the two optical rods 51 together.

[0033] In this embodiment, through the mutual movement and cooperation of multiple structures arranged in the magic hook clamp 4, the set magic hook clamp 4 can clamp the magic hook body 7 in a "zigzag" shape. The "zigzag" clamping can make the contact between the magic surface body 6 and the magic hook body 7 more uniform. During the drawing test, the tensile force can be more evenly distributed on the bonding surface between the magic surface body 6 and the magic hook body 7, avoiding the situation of excessive or too small local stress, so that the obtained drawing force data in the test can more truly reflect the actual bonding performance of the magic hook body 7. At the same time, the conventional planar clamping may cause differences in the bonding situation between the edge part and the middle part, resulting in an edge effect, which affects the accuracy of the drawing test result. The magic hook clamp 4 of this application with a "zigzag" clamping can effectively reduce this edge effect, making the drawing test result more representative, so as to effectively test the production data between the magic surface body 6 and the magic hook body 7.

[0034] Specifically, referring to Figure 3 , the magic hook body 7 is surrounded by the bottom of the convex block 45, and the magic hook body 7 is installed in a "zigzag" shape between the bottom of the convex block 45 and the two clamping plates 43.

[0035] In this embodiment, in actual use, the bottom of the protrusion 45 protrudes from the two clamping plates 43, so that when the magic hook body 7 is clamped on the protrusion 45, the two clamping plates 43 clamp the sides of the magic hook body 7, so that the magic hook body 7 can be clamped in a "U" shape. In many practical applications, the magic hook body 7 is not simply a flat bonding. The "U" shape clamping is closer to the usage state of the magic hook body 7 in the actual product, such as the application on some curved or arc-shaped parts. This can more accurately evaluate the performance of the magic hook body 7 in the actual use environment.

[0036] Specifically, refer to Figure 3 One end of the positive and negative threaded rod 42 passes through the fixture table 41 and extends to be connected to the rotating handle 46. Two side rods 47 are also installed on the fixture table 41. The two side rods 47 are respectively set on one side of the positive and negative threaded rod 42, and both side rods 47 pass through the clamping plate 43 and slide to it.

[0037] In this embodiment, the rotating handle 46 can be used to drive the forward and reverse threaded rod 42 to rotate. When the forward and reverse threaded rod 42 rotates, it is laterally limited by the two side rods 47 on the clamping plate 43. At this time, the two clamping plates 43 engaged outside the forward and reverse threaded rod 42 can move linearly along the stroke range of the forward and reverse threaded rod 42.

[0038] Furthermore, since the threaded rod 42 has a forward and reverse thread configuration, and in a preferred embodiment, the two clamping plates 43 respectively engage with one of the threads of the threaded rod 42. When the threaded rod 42 rotates in both directions, the two clamping plates 43 can either clamp in opposite directions or separate in opposite directions.

[0039] Specifically, refer to Figure 2 A crossbeam 52 is installed at the top of the smooth rod 51 inside the two rough-surface clamps 5. A guide rod cylinder 53 is mounted on the crossbeam 52. The output end of the guide rod cylinder 53 passes through the crossbeam 52 and extends to connect with the top of the pressure plate 54.

[0040] In this embodiment, during use, the guide rod cylinder 53 is connected to an external air source and given an output air pressure value, so that the guide rod cylinder 53 can linearly drive the pressure plate 54, allowing the pressure plate 54 to slide outside the two crossbeams 52.

[0041] Specifically, refer to Figure 1-2 The upper surface of the test platform 11 is covered with a Velcro body 6, and both ends of the Velcro body 6 are laid on the bottom of the two pressure plates 54.

[0042] In this embodiment, the user places the hook and loop fastener body 6 on the lower end face of the two pressure plates 54, and then drives the guide rod cylinder 53 so that the guide rod cylinder 53 can drive the pressure plates 54 to move downward until the two pressure plates 54 press and limit the top surfaces of the hook and loop fastener body 6 on both sides. At this time, the hook and loop fastener body 6 can be positioned at the bottom of the two pressure plates 54.

[0043] The present invention relates to a pulling device for producing magic hooks:

[0044] Step 1: When the user needs to bond the hook body 7 to the hook and loop body 6 and perform a pull test, first clamp the hook body 7 onto the hook clamp 4. During this process, the user bends the hook body 7 and lays it in a "U" shape at the bottom of the protrusion 45. Then, the user rotates the pivot handle 46. With the pivot handle 46 connected to the positive and negative threaded rods 42, the positive and negative threaded rods 42 can rotate accordingly. When the positive and negative threaded rods 42 rotate, they are laterally limited by the two side rods 47 on the clamping plate 43. At this time, they are engaged in the positive and negative threaded rods 45. The two clamping plates 43 on the outside of the reverse threaded rod 42 can move linearly along the stroke range of the forward and reverse threaded rod 42. At the same time, due to the forward and reverse threaded rod 42, when the forward and reverse threaded rod 42 rotates in the forward and reverse directions, the two clamping plates 43 can move in opposite directions to clamp or move in opposite directions to separate. The user drives the forward and reverse threaded rod 42 to rotate until the two clamping plates 43 move in opposite directions to clamp the two sides of the magic hook body 7. At this time, due to the protrusion of the bottom of the protrusion 45, the magic hook body 7 can be clamped on the magic hook clamp 4 in a "U" shape.

[0045] Step 2: After the hook body 7 is clamped on the hook clamp 4, the user can clamp the hook and loop body 6 between the two sets of loop clamps 5. During this period, the user places the hook and loop body 6 at the bottom of the two pressure plates 54, then connects the guide rod cylinder 53 to an external air source and gives the guide rod cylinder 53 an output air pressure value, thereby driving the pressure plates 54 through the guide rod cylinder 53 until the two pressure plates 54 can move down to contact the hook and loop body 6 and press and limit the hook and loop body 6.

[0046] Step 3: After the hook and loop fastener body 6 is positioned on the two sets of hook and loop clamps 5, the user controls the linear screw module 2 to drive the tension machine body 3 and the hook and loop fastener 4 to descend. By controlling the descent height of the hook and loop fastener 4, the hook and loop fastener body 7 can be bonded to the hook and loop fastener body 6. At this time, because the hook and loop fastener body 7 is protruding, it can fully bond with the hook and loop fastener body 6. After the hook and loop fastener body 6 and hook and loop fastener body 7 are bonded, the user can drive the linear screw module again. Group 2 rises while the tensile testing machine body 3 is set with pulling parameters. As the linear screw module 2 rises, the pulling force is slowly increased. Combined with the connection between the tensile testing machine body 3 and the hook and loop clamp 4, the tensile testing machine body 3 can record the pulling force value and the deformation between the hook and loop fastener body 6 and the hook and loop fastener body 7 in real time. This continues until the hook and loop fastener body 7 completely separates from the hook and loop fastener body 6 or the predetermined test endpoint is reached. The user can then plot a force-displacement curve based on the data recorded during the test, analyze the shape and characteristics of the curve, and obtain key performance indicators such as maximum pull-out force, yield strength, and elongation at break. The test results are compared with relevant standards or design requirements to ultimately determine whether the hook and loop fastener body 7 is qualified after production.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drawing device for magic hook production, comprising a drawing test table (1), characterized in that; a linear screw module (2) is arranged on the drawing test table (1), and a tension machine body (3) is arranged on the linear screw module (2); a tension rod is arranged at the bottom of the tension machine body (3), and a magic hook clamp (4) is installed at the end of the tension rod; a test table plate (11) is installed on the upper end surface of the drawing test table (1), and two groups of rough surface clamps (5) are arranged on the upper end surface of the test table plate (11); wherein the magic hook clamp (4) comprises a clamp table (41) arranged on the tension machine body (3), the clamp table (41) is arranged in a U shape, and a positive and negative toothed rod (42) is arranged in the clamp table (41) along the transverse direction thereof, and two clamping plates (43) are arranged on the outside of the positive and negative toothed rod (42); a center beam (44) is installed at the center of the clamp table (41), a protrusion (45) is installed at the bottom of the center beam (44), and the protrusion (45) is arranged between the two clamping plates (43) and the bottom of the protrusion (45) is lower than the two clamping plates (43); the rough surface clamp (5) comprises two light rods (51) arranged on the upper end surface of the test table plate (11), and a pressing plate (54) is arranged on the outside of the two light rods (51) and slides together.

2. The drawing device for magic hook production according to claim 1, characterized in that, the protrusion (45) is surrounded by a magic hook body (7) arranged at the bottom thereof, and the magic hook body (7) is installed in the shape of "J" between the bottom of the protrusion (45) and the two clamping plates (43).

3. The drawing device for magic hook production according to claim 1, characterized in that, one end of the positive and negative toothed rod (42) penetrates the clamp table (41) and is connected with a rotating shaft handle (46), two side rods (47) are also installed on the clamp table (41), the two side rods (47) are arranged on one side of the positive and negative toothed rod (42) respectively, and the two side rods (47) penetrate the clamping plates (43) and are connected with the clamping plates (43) through sliding.

4. The drawing device for magic hook production according to claim 1, characterized in that, the light rods (51) in the two rough surface clamps (5) are provided with a cross beam (52) at the top end thereof, a guide rod cylinder (53) is arranged on the cross beam (52), and the output end of the guide rod cylinder (53) penetrates the cross beam (52) and is connected with the top of the pressing plate (54).

5. The drawing device for magic hook production according to claim 1, characterized in that, a magic tape rough surface body (6) is laid on the upper end surface of the test table plate (11), and the magic tape rough surface body (6) is laid on the bottom of the two pressing plates (54).

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