Antiskid patch for tensile test

Abstract

The utility model discloses an anti-skid patch for a tensile test, which is a plastic and metal assembled complex and is suitable for being matched and attached with a dumbbell type clamping end. The antiskid patch comprises a hard base body and more than three metal spine bodies, the hard base body is in the shape of a sheet body attached to the corresponding clamping end, each metal spine body is provided with a base part and a cone part which are integrally formed, the base part is embedded and fixed in the hard base body, and the cone part is exposed on the surface of the plastic substrate in a protruding mode and pierces into a sample to be tested in the mode of facing the sample to be tested. When the anti-skid patch is applied to tensile test equipment, the anti-skid patch is attached to a clamping end through a pressing machine or an attaching mode and the like, and the anti-skid patch is clamped towards a test sample to enable a plurality of distributed conical parts to be inserted into the test sample, so that the skid phenomenon under the tensile external force is greatly weakened, and more accurate performance data of a plastic product can be obtained.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for tensile testing of plastic products, and more particularly to an anti-slip patch for attaching to the clamping end of a dumbbell-shaped sample. Background Technology

[0002] In tensile testing of plastic products, tensile tests at different temperatures can reflect the product's performance data at different temperatures. Routine plastic tensile testing requires clamping the specimen at both ends using fixtures within a tensile testing machine, then controlling the increase in the distance between the clamps to elongate the specimen and measure the results. Most existing fixtures are metal flat-jaw clamps, some with rubber damping pads or reverse teeth formed at the clamping ends. Despite this, slippage still occurs when clamping the specimen and performing the tensile operation, especially under high or low temperature conditions. Depending on the specimen material, the reverse teeth of the clamps wear out quickly, requiring frequent clamp replacements and increasing costs. Adding hydraulic or other auxiliary clamping components to the fixtures would inevitably increase the operation time and affect testing efficiency, and would also have a certain impact on maintaining the temperature environment. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-slip patch for tensile testing to improve the accuracy of the plastic performance data obtained from the test.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-slip patch for tensile testing, which is an assembly composite of plastic and metal, suitable for mounting with the dumbbell-shaped sample clamping end, characterized in that: it includes a rigid substrate and three or more metal spikes, wherein the shape of the rigid substrate is the sheet body corresponding to the clamping end, and the metal spikes have an integrally formed base part and a cone part, with the base part embedded and fixed in the rigid substrate, and the cone part protruding from the surface of the plastic substrate and facing the sample to be tested and penetrating into it.

[0005] Furthermore, the rigid substrate has a damping surface on the side facing away from the cone.

[0006] Furthermore, the damping surface is provided with one or more combinations of stripes, dotted particles, and closed-loop protrusions.

[0007] Furthermore, the base of the metal spike is formed as a cylinder, a square prism, or a multi-faceted pyramid; and the cone is shaped as a cone or a pyramid.

[0008] Furthermore, the metal spike is integrally formed with the rigid substrate through a plastic coating on the base portion.

[0009] Furthermore, the metal spike is wrapped around a rigid substrate and pressed onto the surface of the rigid substrate by a wire mesh, with the cone protruding from the mesh openings.

[0010] Furthermore, the metal spikes are arranged in linear rows or discretely staggered arrangements on the surface of the hard substrate.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: The anti-slip patch is attached to the clamping end of the tensile testing equipment by means of pressing or bonding, and clamped facing the sample, causing the distributed cones to penetrate the sample surface, thus achieving enhanced positioning. This significantly reduces slippage under tensile force, thereby facilitating the acquisition of more accurate performance data for plastic products. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the anti-slip patch of this utility model.

[0013] Figure 2 yes Figure 1 Based on the cross-sectional structural diagram of the EE line. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master, and thus to make a clearer definition of the protection scope of this utility model.

[0015] The designer of this utility model addresses the issue of slippage that easily occurs during tensile testing of plastic samples using dumbbell-shaped sample clamps, which affects testing efficiency. Based on extensive production line experience, an innovative anti-slip patch has been proposed to improve the accuracy of the obtained plastic performance data.

[0016] This utility model discloses an anti-slip patch suitable for dumbbell-shaped sample clamping ends or various clamps, assisting in tensile testing for obtaining performance data of plastic products. Unlike traditional soft rubber pads or hydraulic methods, this anti-slip patch is instead an assembly of a rigid substrate and metal that is easily moldable. Its texture is relatively hard and suitable for attachment to dumbbell-shaped sample clamping ends. It mainly includes a rigid substrate 1 and three or more metal spikes 2, with four spikes in the preferred embodiment shown. The rigid substrate 1 can be molded from plastic, rubber, or resin into a sheet to be attached to the corresponding clamping end. In the preferred embodiment shown, it is a rectangular plastic block with a certain thickness, but it can also be a circular or irregularly shaped plastic block. The metal spikes 2 are integrally formed through processes such as casting grouting or steel ingot cutting, and have a base portion 21 and a cone portion 22. The base portion 21 is embedded and fixed in the rigid substrate 1, and the cone portion 22 protrudes from the surface of the plastic substrate and faces the sample to be tested, penetrating into it. Therefore, when the anti-slip patch is combined with the clamping end and then used to clamp the sample, the sample will be strictly positioned by the cone, so that the tensile test can accurately reflect the deformation state of the plastic product under the action of external force and obtain performance data.

[0017] It should be noted that the cone-shaped part of the sample is not completely pierced, but rather penetrates to a limited depth of approximately half the sample thickness. This ensures reliable positioning and anti-slip effect without compromising the sample's structural strength and preventing breakage during tensile testing.

[0018] Looking at the features in more detail, the rigid substrate 1 has a front side 1A and a back side 1B, with the back side used to embed the metal spike 2, while the front side, facing away from the cone, is designated as a damping surface. In the preferred embodiment shown, this damping surface is provided as uniformly spaced and equally undulating striped protrusions, so as to firmly bond with the clamping end by means of pressing or attaching. Of course, it can also be provided as distributed dot-like particle protrusions or closed-loop protrusions of various shapes (such as rhombuses).

[0019] The base 21 of the metal spike 2 can be formed into a cylinder, square prism, or polygonal pyramid prism to ensure its stable positioning and embedding into the rigid substrate. The cone 22 is cone-shaped or pyramidal, requiring its tip to overcome the surface tension of the sample and penetrate smoothly, so that the back surface 1B of the rigid substrate can adhere to the sample surface. From the molding process of the anti-slip patch, the metal spike 2 can be used as an insert, integrally molded with the rigid substrate by plastic coating the base. Furthermore, the metal spike can also be pressed onto the surface of the rigid substrate by wrapping it with a wire mesh, with the cone protruding through the mesh openings. The wire mesh is woven from steel wire or nylon filaments, and the mesh size is suitable for the cone to penetrate and press against the base. When the wire mesh tightly wraps the plastic substrate, each metal spike is also stably positioned and adhered to the back surface.

[0020] In addition to the metal spikes being arranged in rows along the centerline of the hard substrate in the preferred embodiment shown in the figure, these metal spikes can also be discretely staggered, such as being positioned and assembled along the trajectory of a Z-shape, a pulse shape, or a sine wave.

[0021] In summary, the design scheme and detailed embodiments of the irregular induction coil of this utility model demonstrate its substantial features and advancements: the anti-slip patch is attached to the clamping end of the tensile testing equipment by means of pressing or bonding, and clamped facing the sample, causing the distributed cones to penetrate the sample surface, thus achieving enhanced positioning. This significantly reduces slippage under tensile force, thereby facilitating the acquisition of more accurate performance data for plastic products.

[0022] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. An anti-slip patch for tensile testing, comprising a plastic and metal assembly, suitable for mounting to the clamping end of a dumbbell-shaped sample, characterized in that: It includes a rigid substrate and three or more metal spikes, wherein the rigid substrate is shaped like a sheet attached to the corresponding clamping end, and the metal spikes have an integrally formed base and a cone, with the base embedded and fixed in the rigid substrate, and the cone protruding from the surface of the plastic substrate and facing the sample to be tested and penetrating into it.

2. The anti-slip patch for tensile testing according to claim 1, characterized in that: The rigid substrate has a damping surface on the side facing away from the cone.

3. The anti-slip patch for tensile testing according to claim 2, characterized in that: The damping surface is provided with one or more combinations of stripes, dot-like particles, and closed-loop protrusions.

4. The anti-slip patch for tensile testing according to claim 1, characterized in that: The base of the metal spike is formed as a cylinder, square prism, or multi-faceted pyramid; and the cone is shaped as a cone or pyramid.

5. The anti-slip patch for tensile testing according to claim 4, characterized in that: The metal spike is integrally formed with the rigid substrate through plastic coating on the base.

6. The anti-slip patch for tensile testing according to claim 4, characterized in that: The metal spike is wrapped in a wire mesh and pressed onto the surface of the hard substrate, with the cone protruding through the mesh openings of the wire mesh.

7. The anti-slip patch for tensile testing according to claim 1, characterized in that: The metal spikes are arranged in linear rows or discretely staggered arrangements on the surface of a hard substrate.

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