Vulcanized rubber or thermoplastic rubber stretching caliper device

Abstract

The utility model discloses a vulcanized rubber or thermoplastic rubber stretching caliper device, which belongs to the technical field of thermoplastic stretching and comprises a workbench, a clamp, a guide column, a stretching structure and a caliper device. The clamp and the guide column are both installed on the workbench, and the stretching structure comprises stretching pliers capable of moving up and down along the guide column and a threaded rod used for controlling the position of the stretching pliers. The stretching pincers and the clamp clamp the two ends of a workpiece correspondingly, and the stretching pincers can stretch the workpiece when moving up and down. The caliper device is arranged on the moving path of the stretching pliers and used for limiting the maximum stretching distance of the stretching pliers. According to the vulcanized rubber or thermoplastic rubber stretching caliper device disclosed by the utility model, the position of the stretching caliper can be limited by utilizing the caliper device, so that the longest stretching distance of a workpiece is controlled, and the workpiece is tested under the condition of ensuring that the workpiece is not damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of thermoplastic stretching, and particularly to a stretching caliper device for vulcanized rubber or thermoplastic rubber. Background Technique

[0002] Thermoplastic Vulcanizate, abbreviated as TPV, and the Chinese abbreviation of Thermoplastic Vulcanizate is Thermoplastic Rubber, abbreviated as TPR.

[0003] The constant elongation test is used to determine the ability of rubber to maintain its elasticity after stretching. The rubber is stretched to a specified strain at the standard laboratory temperature, and the strain is maintained at the same temperature or a specified higher temperature for a specified time, and then the strain is released at the test temperature or the standard laboratory temperature.

[0004] Existing measuring devices generally perform stretching directly. During stretching, the workpiece may be directly torn or broken. Content of the Utility Model

[0005] The utility model discloses a stretching caliper device for vulcanized rubber or thermoplastic rubber to improve the above problems.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] Based on the above purpose, the utility model discloses a stretching caliper device for vulcanized rubber or thermoplastic rubber, including:

[0008] A workbench;

[0009] A fixture, which is installed on the workbench;

[0010] A guide post, which is installed on the workbench, and the guide post is arranged at an interval from the fixture;

[0011] A stretching structure, which includes a threaded rod and a stretching clamp for clamping the workpiece. The position of the stretching clamp corresponds to the position of the fixture, and the stretching clamp is slidably connected to the guide post. The threaded rod is rotatably connected to the stretching clamp, and the threaded rod is threadedly connected to the workbench; and

[0012] A caliper, which is installed on the guide post, and the caliper is used to control the stretching distance of the stretching structure.

[0013] Optionally: A plurality of teeth are provided on the guide post, and the plurality of teeth are arranged at intervals along the height direction of the guide post;

[0014] The caliper includes a movable ring and a stop bar. The movable ring is slidably engaged with the guide post, and the movable ring is located above the stretching clamp. The stop bar is disposed on a side of the movable ring facing the stretching clamp. A relief groove is provided at a position of the movable ring corresponding to the tooth. A latch bar and an elastic member are provided on the movable ring. The latch bar is disposed in the relief groove and is rotatably connected to the movable ring. Two ends of the elastic member are respectively connected to the movable ring and the latch bar. The elastic member causes the latch bar to have a tendency to rotate towards the tooth. When the latch bar abuts against the tooth, the movable ring can only move upward along the guide post in the vertical direction.

[0015] Optionally: A control knob and a connecting rope are further provided on the movable ring. A position of the control knob corresponds to a position of the latch bar, and the control knob is rotatably connected to the movable ring. Two ends of the connecting rope are respectively connected to the latch bar and the control knob. Rotate the control knob to pull the latch bar away from the tooth against the elastic force of the elastic member through the connecting rope.

[0016] Optionally: The tooth includes an abutting surface and an inclined surface. The abutting surface is located below the tooth and is perpendicular to the guide post, and the inclined surface is located above the tooth.

[0017] Optionally: The elastic member is a spring or a torsion spring.

[0018] Optionally: The workbench includes a base, a support rod, and a top plate. The base and the top plate are respectively installed at two ends of the support rod;

[0019] The fixture is installed on the base. Two ends of the guide post are respectively connected to the base and the top plate, and the guide post is arranged in parallel with the support rod. The threaded rod is threadedly connected to the top plate.

[0020] Optionally: A guide groove is provided on the guide post. The guide groove extends along a height direction of the guide post. A latch is provided on the stretching clamp, and the latch is slidably engaged with the guide groove.

[0021] Optionally: The top plate and the support rod are connected by bolts;

[0022] Positioning holes are respectively provided on the base and the top plate. A cross section of the positioning hole is rectangular or hexagonal. Two ends of the guide post are inserted and engaged with the positioning holes, and shapes of two ends of the guide post are adapted to a shape of the positioning hole.

[0023] Optionally: A plurality of the fixtures are provided, and the plurality of fixtures are spaced apart along a length direction of the workbench;

[0024] A plurality of clamping parts are arranged on the stretching pliers, and the plurality of clamping parts are arranged in one-to-one correspondence with the plurality of jigs.

[0025] Optionally, it further includes a motor and a contact switch. The motor is installed on the top of the workbench, and the motor is in transmission connection with the threaded rod. The contact switch is installed on the caliper. When the stretching pliers abut against the caliper, the stretching pliers trigger the contact switch and cause the motor to stop working.

[0026] Compared with the prior art, the beneficial effects achieved by the present utility model are:

[0027] The embodiment of the present utility model discloses a stretching caliper device for vulcanized rubber or thermoplastic rubber, which includes a workbench, a jig, a guide post, a stretching structure, and a caliper. The jig and the guide post are both installed on the workbench. The stretching structure includes a stretching pliers that can move up and down along the guide post and a threaded rod for controlling the position of the stretching pliers. The stretching pliers and the jig respectively clamp both ends of the workpiece, and the workpiece can be stretched when the stretching pliers move up and down. The caliper is arranged on the moving path of the stretching pliers, and the caliper is used to limit the maximum stretching distance of the stretching pliers.

[0028] The stretching caliper device for vulcanized rubber or thermoplastic rubber disclosed by the present utility model can limit the position of the stretching pliers by using the caliper, so as to control the longest distance that the workpiece is stretched, and test the workpiece without damaging the workpiece. Brief Description of the Drawings

[0029] Figure 1 Shows a schematic diagram of the stretching caliper device for vulcanized rubber or thermoplastic rubber disclosed by the embodiment of the present utility model;

[0030] Figure 2 Shows a schematic diagram of the workbench disclosed by the embodiment of the present utility model;

[0031] Figure 3 Shows a schematic diagram of the stretching structure disclosed by the embodiment of the present utility model;

[0032] Figure 4 Shows a schematic diagram of the cooperation between the caliper and the guide post disclosed by the embodiment of the present utility model;

[0033] Figure 5 Shows a schematic diagram of the guide post disclosed by the embodiment of the present utility model;

[0034] Figure 6 Shows a schematic diagram of the caliper disclosed by the embodiment of the present utility model.

[0035] In the figure:

[0036] 100 - Workbench, 110 - Base, 120 - Top plate, 130 - Support rod, 140 - Positioning hole, 150 - Bolt, 200 - Fixture, 300 - Guide post, 310 - Serrations, 400 - Tensile structure, 410 - Threaded rod, 420 - Tensile clamp, 421 - Clamping part, 500 - Caliper, 510 - Movable ring, 511 - Relief groove, 512 - Card strip, 513 - Elastic member, 514 - Control knob, 515 - Connecting rope, 520 - Stop bar, 600 - Workpiece. Detailed implementation mode

[0037] The following further describes the present utility model in detail through specific examples in combination with the accompanying drawings.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention have been clearly and completely described above with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the vulcanized rubber or thermoplastic rubber tensile caliper device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being above, over and on the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0044] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0045] Embodiment:

[0046] Refer to Figures 1 to 6 , an embodiment of the present utility model discloses a stretching caliper device for vulcanized rubber or thermoplastic rubber, which includes a workbench 100, a fixture 200, a guide post 300, a stretching structure 400 and a caliper 500. The fixture 200 and the guide post 300 are both installed on the workbench 100. The stretching structure 400 includes a stretching clamp 420 that can move up and down along the guide post 300 and a threaded rod 410 for controlling the position of the stretching clamp 420. The stretching clamp and the fixture 200 respectively clamp both ends of the workpiece 600, and when the stretching clamp 420 moves up and down, it can stretch the workpiece 600. The caliper 500 is arranged on the moving path of the stretching clamp 420, and the caliper 500 is used to limit the maximum stretching distance of the stretching clamp 420.

[0047] The stretching caliper device for vulcanized rubber or thermoplastic rubber disclosed in this embodiment can limit the position of the stretching clamp 420 by using the caliper 500, so as to control the longest distance that the workpiece 600 is stretched, and test the workpiece 600 without damaging the workpiece 600.

[0048] Refer to Figure 1 and Figure 2, the workbench 100 includes a base 110, a support rod 130, and a top plate 120. The base 110 and the top plate 120 are respectively installed at both ends of the support rod 130. The top plate 120 is connected to the support rod 130 by bolts 150, and positioning holes 140 are respectively provided on the base 110 and the top plate 120. The cross-section of the positioning hole 140 is rectangular or hexagonal. Of course, setting the positioning hole 140 to the above shape is only one implementation manner in this embodiment. In other implementation manners, setting the shape of the positioning hole 140 to a triangle or other non-circular shapes is also possible. The positioning hole 140 is used to restrict the guide post 300 to prevent the guide post 300 from rotating along its axis.

[0049] Both ends of the guide post 300 are respectively inserted into the positioning holes 140 on the base 110 and the top plate 120. The detachable cooperation between the top plate 120 and the support rod 130 makes the disassembly of the guide post 300 more convenient.

[0050] Refer to Figure 3 , the stretching structure 400 includes a threaded rod 410 and a stretching clamp 420 for clamping the workpiece 600. The position of the stretching clamp 420 corresponds to the position of the fixture 200, and the stretching clamp 420 is slidably connected to the guide post 300. The threaded rod 410 is rotatably connected to the stretching clamp 420 and is threadedly connected to the workbench 100. In this way, when the threaded rod 410 is rotated, the stretching clamp 420 can be driven to move up and down, so as to stretch the workpiece 600 located between the stretching clamp 420 and the fixture 200.

[0051] Among them, a guide groove is provided on the guide post 300, and the guide groove extends along the height direction of the guide post 300. A clamping block is provided on the stretching clamp 420, and the clamping block is slidably engaged with the guide groove. The guide groove can be set as a T-shaped groove or a dovetail groove or other shapes.

[0052] Of course, the above connection manner between the threaded rod 410 and the stretching clamp 420 is not the only connection manner. In other embodiments, it is also possible to make the threaded rod 410 rotatably connected to the top plate 120 and threadedly connected to the stretching clamp 420.

[0053] The caliper 500 is used to control the stretching distance of the stretching structure 400. Specifically, the caliper 500 is arranged above the stretching clamp 420. When the stretching clamp 420 moves upward and abuts against the caliper 500, the stretching clamp 420 cannot continue to move upward, that is, the stretching length of the workpiece 600 is restricted.

[0054] Refer to Figures 4 to 6, a plurality of teeth 310 are provided on the guide rod. The teeth 310 are located on the side of the guide rod away from the guide groove to prevent the control of the caliper 500 from conflicting or colliding with the movement of the stretching pliers 420. The plurality of teeth 310 are arranged in sequence along the length direction of the guide rod. The teeth 310 include a contact surface and an inclined surface. The contact surface is located below the teeth 310 and is perpendicular to the guide post 300, and the inclined surface is located above the teeth 310.

[0055] Referring to FIG. 6, the caliper 500 includes a movable ring 510 and a retaining bar 520. A retaining strip 512, an elastic member 513, a control knob 514 and a connecting rope 515 are provided on the movable ring 510. The movable ring 510 is slidably engaged with the guide post 300, and the movable ring 510 is located above the stretching pliers 420. The retaining bar 520 is provided on the side of the movable ring 510 facing the stretching pliers 420.

[0056] A relief groove 511 is provided at a position of the movable ring 510 corresponding to the teeth 310. A retaining strip 512 and an elastic member 513 are provided on the movable ring 510. The retaining strip 512 is arranged in the relief groove 511 and is rotatably connected to the movable ring 510.

[0057] Both ends of the elastic member 513 are respectively connected to the movable ring 510 and the retaining strip 512. The elastic member 513 causes the retaining strip 512 to have a tendency to rotate towards the teeth 310. Among them, the elastic member 513 can be a spring or a torsion spring or other elastic materials or structures that can cause the retaining strip 512 to have a rotational tendency.

[0058] When the retaining strip 512 abuts against the teeth 310, the movable ring 510 can only move upward along the guide post 300. The position of the control knob corresponds to the position of the retaining strip 512, and the control knob is rotatably connected to the movable ring 510. Both ends of the connecting rope 515 are respectively connected to the retaining strip 512 and the control knob. Rotate the control knob to pull the retaining strip 512 away from the teeth 310 against the elastic force of the elastic member 513 through the connecting rope 515. During use, first reverse-rotate the control knob 514 to separate the retaining strip 512 from the teeth 310. At this time, the caliper 500 can be controlled to move upward; after the caliper 500 moves to the uppermost position, release the control knob 514, and then slowly push the caliper 500 downward until the caliper 500 moves to the designated position. At this time, after releasing the caliper 500, the caliper 500 remains in this position (utilizing the abutting friction force between the retaining strip 512 and the teeth 310). When the stretching pliers 420 move upward, the stretching pliers 420 cannot continue to move upward after abutting against the caliper 500 (the retaining strip 512 abuts against the teeth 310, making the stretching pliers 420 and the caliper 500 unable to move upward).

[0059] A plurality of jigs 200 may be provided, and the plurality of jigs 200 are arranged at intervals along the length direction of the workbench 100. A plurality of clamping portions 421 are provided on the stretching tongs 420, and the plurality of clamping portions 421 are arranged in one-to-one correspondence with the plurality of jigs 200. The cooperation between the plurality of clamping portions 421 and the plurality of jigs 200 can simultaneously test a plurality of workpieces 600, thereby improving the test efficiency.

[0060] The vulcanized rubber or thermoplastic rubber stretching caliper device disclosed in this embodiment can be driven by a motor. Specifically, the motor is installed on the top of the workbench 100, and the motor is in transmission connection with the threaded rod 410. The contact switch is installed on the caliper 500. When the stretching tongs 420 abut against the caliper 500, the stretching tongs 420 trigger the contact switch and the motor stops working.

[0061] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vulcanized rubber or thermoplastic rubber tensile caliper device, characterized in that: include: Workbench; A fixture, the fixture is installed on the workbench; A guide column, the guide column is installed on the workbench, and the guide column and the clamp are spaced apart; A stretching structure, the stretching structure comprising a threaded rod and a stretching clamp for clamping a workpiece, the position of the stretching clamp corresponds to the position of the clamp, the stretching clamp is slidably connected to the guide column, the threaded rod is rotatably connected to the stretching clamp, and the threaded rod is threadedly connected to the workbench; as well as A caliper is mounted on the guide column, and the caliper is used to control the stretching distance of the stretching structure.

2. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 1, characterized in that: A plurality of latch teeth are arranged on the guide column, and the plurality of latch teeth are arranged at intervals along the height direction of the guide column; The caliper includes a movable ring and a baffle, the movable ring is slidably matched with the guide column, and the movable ring is located above the stretching pliers, the baffle is arranged on the side of the movable ring facing the stretching pliers, and a clearance groove is arranged at the position of the movable ring corresponding to the clamping tooth, and a clamping strip and an elastic member are arranged on the movable ring, the clamping strip is arranged in the clearance groove, the clamping strip is rotatably connected to the movable ring, and the two ends of the elastic member are respectively connected to the movable ring and the clamping strip, and the elastic member makes the clamping strip have a tendency to rotate toward the clamping tooth. When the clamping strip abuts against the clamping tooth, the movable ring can only move on the guide column in a vertical upward direction.

3. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 2, characterized in that: The movable ring is also provided with a control knob and a connecting rope. The position of the control knob corresponds to the position of the clamping strip, and the control knob is rotatably connected to the movable ring. The two ends of the connecting rope are respectively connected to the clamping strip and the control knob. The control knob is rotated to pull the clamping strip through the connecting rope to overcome the elastic force of the elastic member and rotate in a direction away from the clamping tooth.

4. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 3, characterized in that: The latch tooth comprises a contact surface and an inclined surface, wherein the contact surface is located below the latch tooth and is perpendicular to the guide column, and the inclined surface is located above the latch tooth.

5. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 3, characterized in that: The elastic member is a spring or a torsion spring.

6. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 1, characterized in that: The workbench comprises a base, a support rod and a top plate, wherein the base and the top plate are respectively mounted at two ends of the support rod; The clamp is installed on the base, the two ends of the guide column are connected to the base and the top plate respectively, and the guide column is arranged parallel to the support rod, and the threaded rod is threadedly connected to the top plate.

7. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 6, characterized in that: The guide column is provided with a guide groove, and the guide groove extends along the height direction of the guide column. The stretching clamp is provided with a clamping block, and the clamping block is slidably matched with the guide groove.

8. The vulcanized rubber or thermoplastic rubber tensile caliper device according to claim 7, characterized in that: The top plate is connected to the support rod by bolts; The base and the top plate are respectively provided with positioning holes, the cross-section of the positioning holes is rectangular or hexagonal, the two ends of the guide column are plug-fitted with the positioning holes, and the shapes of the two ends of the guide column are adapted to the shape of the positioning holes.

9. A vulcanized rubber or thermoplastic rubber tensile caliper device according to any one of claims 1 to 8, characterized in that: The clamps are provided in plurality, and the plurality of clamps are arranged at intervals along the length direction of the workbench; The stretching clamp is provided with a plurality of clamping parts, and the plurality of clamping parts are arranged in one-to-one correspondence with the plurality of clamps.

10. A vulcanized rubber or thermoplastic rubber tensile caliper device according to any one of claims 1 to 8, characterized in that: It also includes a motor and a contact switch, wherein the motor is installed on the top of the workbench and is transmission-connected to the threaded rod, and the contact switch is installed on the caliper. When the stretching caliper abuts against the caliper, the stretching caliper triggers the contact switch and stops the motor.

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