A heat conducting plastic tensile test assembly

Abstract

The utility model discloses a kind of heat-conducting plastic tensile test components, belong to heat-conducting plastic tensile test technical field, the component includes rotating rod, fixed rod and clamping component. Among them, rotating rod is provided with two and symmetrically set, rotating rod is sequentially provided with first rotating position, second rotating position and fixed position from top to bottom. Clamping component is fixed on the fixed position, by pulling fixed rod, two clamping components can be made tightly abut. Clamping component includes clamping block fixed on rotating rod, and abutting piece hinged in the similar surface of two clamping blocks, abutting piece is driven rotating by abutting stud. The utility model has the advantages that: by abutting stud driving abutting piece fine adjustment rotating around the intersection of it and clamping block, so that clamping block can always clamp tightly for different thickness specifications of heat-conducting plastic.

Description

Technical Field

[0001] This utility model relates to the field of thermoplastic tensile testing technology, and specifically to a thermally conductive plastic tensile testing component. Background Technology

[0002] After the thermally conductive plastic is manufactured, a tensile test is conducted using a specialized tensile testing device to assess its deformation resistance. Traditional tensile testing devices mainly consist of a movable clamp and a fixed clamp. During testing, both ends of the thermally conductive plastic sample are fixed to these two clamps respectively. A tensile force is applied to the sample by moving the movable clamp until the sample breaks. However, this testing device has a significant drawback: the movable clamp can only achieve ideal clamping for thermally conductive plastics of specific specifications. When the specifications of the thermally conductive plastic change, the clamp needs to be rotated to adjust the distance between the two clamping blocks. This adjustment process causes a slight angular shift in the clamping surfaces of the clamping blocks, changing the contact between the clamping blocks and the thermally conductive plastic from the initial surface contact to a line contact. This change in contact form causes stress concentration, which not only easily damages the sample but also adversely affects the accuracy of the test results. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a thermally conductive plastic tensile testing component to solve the problem of stress concentration caused by angular displacement of the clamp during adjustment in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a thermally conductive plastic tensile testing assembly, comprising: two symmetrically arranged rotating rods, wherein a first rotating position, a second rotating position, and a fixed position are sequentially arranged on the rotating rods, and a clamping component is fixed on the fixed position, wherein the clamping component is tightly abutted by pulling the fixed rod; wherein, the clamping component includes a clamping block fixed on the rotating rod, and an abutting piece hinged to the proximal surfaces of the two clamping blocks, the abutting piece being driven to rotate by an abutting stud.

[0005] Optionally, the abutment stud is threadedly connected to the clamping block, and the end of the abutment stud near the abutment piece is rotatably connected to the abutment piece.

[0006] Optionally, a flexible portion is provided on the side of the abutment piece near the clamping block.

[0007] Optionally, the abutment piece and the clamping block have a hinge position for hinge connection, the flexible part has a short side near the hinge position and a long side corresponding to the short side, and a slanted side is provided on the short side extending to the long side, the slanted side being located on the side of the flexible part away from the abutment piece.

[0008] Optionally, a second adapter is fixed on the abutting stud, and a first adapter is provided on the abutting piece, which is sleeved on the second adapter, with a gap between the second adapter and the first adapter.

[0009] Optionally, the end of the rotating rod away from the clamping block is rotatably connected to a connecting rod, forming a first rotating position.

[0010] Optionally, the connecting rod is rotatably connected to the fixed seat, and the fixed seat is fixed to the fixed rod.

[0011] Optionally, a movable seat is also fitted onto the fixed rod, and the movable seat and the rotating rod are rotatably connected to form a second rotating position, which is located between the first rotating position and the fixed position.

[0012] Optionally, a spring is also fitted onto the fixed rod, with the two ends of the spring abutting against the movable seat and the fixed seat, respectively.

[0013] Optionally, a limiting block is also fixed on the fixed rod, and the limiting block is located on the side of the movable seat away from the fixed seat.

[0014] The advantages of this utility model are: This invention, by incorporating abutment studs, allows for flexible adjustment of the angle between the abutment plate and the clamping block. When the clamping distance needs adjustment due to changes in the specifications of the thermally conductive plastic, the abutment plate can level itself in real time, ensuring that the clamping block and the material being tested always maintain surface contact. This effectively disperses clamping stress, avoids stress concentration problems caused by angular deviations in traditional devices, and significantly improves clamping stability. This invention also includes a flexible section between the clamping block and the abutment piece, which can buffer displacement during the adjustment process and prevent relative offset. The flexible section is thinned in the area facing the hinge position. When the abutment piece returns to its original position and fully fits the clamping block, the elastic deformation of the flexible section can still maintain the flatness of the clamping surface, ensuring that the clamping block fixes the thermally conductive plastic in a full-surface contact manner. This provides a double structural guarantee for clamping accuracy and reliability during the testing process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a thermally conductive plastic tensile testing component according to the present invention.

[0017] Figure 2 This is a component relationship diagram of the clamping part of a thermally conductive plastic tensile testing assembly according to this utility model.

[0018] Figure 3 This is a side cross-sectional view of the clamping component of a thermally conductive plastic tensile testing assembly according to this utility model.

[0019] Figure 4 This is a diagram showing the component relationship between the abutment piece and the flexible part of a thermally conductive plastic tensile testing component according to this utility model.

[0020] Figure 5 This utility model relates to a thermally conductive plastic tensile testing assembly. Figure 3 Enlarged view of point A in the middle.

[0021] Figure 6 This is a front view of a thermally conductive plastic tensile testing assembly according to this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Rotating rod; 2. Clamping component; 21. Clamping block; 22. Abutting piece; 23. Abutting stud; 24. Flexible part; 241. Short side; 242. Long side; 243. Inclined side; 25. First transition part; 26. Second transition part; 3. Fixed rod; 4. Connecting rod; 5. Fixed seat; 6. Movable seat; 7. Spring; 8. Limiting block. Detailed Implementation

[0023] 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.

[0024] As mentioned earlier, the drawback of existing tensile testing assemblies for thermally conductive plastics is that their movable clamps can only achieve ideal clamping in tests of thermally conductive plastics with specific specifications. When the specifications of the thermally conductive plastic change, the clamps need to be rotated to adjust the spacing between the two clamping blocks. This adjustment process causes a slight angular shift in the clamping surfaces of the clamping blocks, changing the contact between the clamping blocks and the thermally conductive plastic from the initial surface contact to a line contact. This change in contact form causes stress concentration, which not only easily damages the sample but also adversely affects the accuracy of the test results.

[0025] In response to this, the present invention proposes a clamping component for tensile testing of thermally conductive plastics, which solves the above-mentioned problems. The present invention solves the problem in the following way.

[0026] Example 1: Please refer to the instruction manual appendix. Figure 1-3 , Figure 6 As shown in the figure, this embodiment provides a thermally conductive plastic tensile testing assembly, which includes at least a rotating rod 1, a clamping component 2, and a fixing rod 3. Two rotating rods 1 are symmetrically arranged, each with a first rotating position, a second rotating position, and a fixed position from top to bottom. The clamping component 2 is fixed to the fixed position. In use, rotating the first rotating position brings the two rotating rods 1 closer together. The fixed position and the clamping component 2 on it then rotate around the second rotating position, thus bringing them closer together and clamping the thermally conductive plastic. Releasing the clamping is achieved by reversing the operation.

[0027] In this first embodiment, as Figure 1 As shown, the clamping component 2 includes a clamping block 21 and an abutment piece 22 hinged to the adjacent surfaces of the two clamping blocks 21. A hinge position is formed between the abutment piece 22 and the clamping block 21. The abutment piece 22 is driven by an abutment stud 23 threaded between the clamping blocks 21, thereby achieving fine adjustment of the angle relative to the clamping block 21.

[0028] In this first embodiment, as Figure 1 As shown, the end of the rotating rod 1 away from the clamping block 21 is rotatably connected to a connecting rod 4, forming a first rotating position. The connecting rod 4 is rotatably connected to a fixed seat 5, and the fixed seat 5 is fixed to the fixed rod 3. A movable seat 6 is also sleeved on the fixed rod 3, and the movable seat 6 and the rotating rod 1 are rotatably connected to form a second rotating position, which is located between the first rotating position and the fixed position. A spring 7 is also sleeved on the fixed rod 3, and the two ends of the spring 7 abut against the movable seat 6 and the fixed seat 5, respectively. A limiting block 8 is also fixed on the fixed rod 3, and the limiting block 8 is located on the side of the movable seat 6 away from the fixed seat 5.

[0029] Therefore, in the specific implementation of this embodiment one, as follows: Figure 6 As shown, in the normal state (without clamping), under the action of spring 7, the movable seat 6 moves away from the fixed seat 5 and closer to the limiting block 8. At this time, the two clamping blocks 21 are close to each other. When it is necessary to clamp the thermally conductive plastic, the user squeezes the rotating rod 1 close to the first rotating position (i.e., the rotating axis where R2 is located in the figure), so that the two first rotating positions are close to each other, and the connecting rod 4 rotates around the fixed seat 5 (i.e., the rotating axis where R1 is located in the figure). The fixed position and the clamping parts 2 on it move away from each other under the lever principle of the second rotating position (i.e., the rotating axis where R3 is located in the figure), and the two first rotating positions move closer to each other. Figure 6 The positional offset of the mid-r angle (it should be noted that...) Figure 6The angle deviation in the middle (r) is an exaggerated demonstration for ease of understanding and is not an actual achievable angle. At this time, the movable seat 6 moves closer to the fixed seat 5, compressing the spring 7 to deform it. When the operator places the thermally conductive plastic (of a specific thickness, where the clamping component 2 and the thermally conductive plastic are completely in contact, achieving surface-to-surface clamping) between the clamping components 2, releasing the gripper causes the clamping component 2 to return to its original position under the deformation force of the spring 7, thus clamping the thermally conductive plastic. Then, pulling the fixing rod 3 (because both ends of the thermally conductive plastic need to be pulled, this component needs to be configured with two rods that work together) moves the fixing rod 3, causing the clamping component 2 to clamp the thermally conductive plastic more tightly. Continuing to apply the moving force stretches the thermally conductive plastic until it breaks, completing the test.

[0030] When clamping thermally conductive plastics of different specifications, the operator needs to repeat the above steps. After clamping the thermally conductive plastic (at this time, the thermally conductive plastic and the clamping component 2 are not completely in contact, so the clamping is line contact, that is, the thermally conductive plastic and the abutment piece 22 are not completely in contact), use a tool to screw the abutment stud 23 to push the abutment piece 22 to rotate. During the rotation, the abutment piece 22 changes the angle with the clamping block 21 until the surface of the abutment piece 22 is completely in contact with the clamping surface of the thermally conductive plastic. At this time, the surface contact clamping is completed. Then pull the fixing rod 3 until the test is completed.

[0031] Example 2: Based on the above embodiments, in order to provide a clearer and more complete explanation of the technical solutions therein, this utility model also provides an embodiment two. For example... Figure 2 , Figure 3 , Figure 5 As shown, in this embodiment, a second adapter portion 26 is fixed on the abutting stud 23, and a first adapter portion 25 is provided on the abutting piece 22 and sleeved on the second adapter portion 26. There is a gap between the second adapter portion 26 and the first adapter portion 25. This gap allows for slight mutual displacement between the first adapter portion 25 and the second adapter portion 26.

[0032] When the abutment stud 23 is screwed on, causing it to push the abutment piece 22, the second adapter 26 moves towards the abutment piece 22 and abuts against the surface of the abutment piece 22, causing the abutment piece 22 to rotate. When the second adapter 26 moves away from the abutment piece 22, the second adapter 26 moves and touches the first adapter 25, pulling the first adapter 25 until the abutment piece 22 returns to its original position.

[0033] Example 3: Based on the above embodiments, in order to further clarify and completely explain the technical solutions therein, this utility model also provides a third embodiment. In this third embodiment, a flexible portion 24 is provided on the side of the abutment piece 22 near the clamping block 21. And as... Figure 4As shown, the abutment piece 22 has four sides, which are referred to as B1, B2, B3 and B4 for ease of understanding and description. The sides B3 and B2 are the sides close to the hinge position where the abutment piece 22 and the clamping block 21 are hinged. When the abutment piece 22 rotates around the hinge position, the rotation angle and rotation distance of each point on the side where B4 is located are actually greater than those of each point on the side where B3 is located. The closer to the hinge position, the smaller the rotation distance.

[0034] If the flexible portion 24 is set to a uniform thickness, it will not be able to effectively buffer the portion B2 near the edge where B4 is located if it is too thin. If the flexible portion 24 is too thick, it will squeeze the edge of B2 near the hinge. Furthermore, the connection at the hinge (e.g., hinge, hinge plate) also has a certain thickness specification, which will affect the different distances on the clamping block 21 corresponding to different points of the abutment piece 22 when it rotates. Therefore, in order to avoid the above problems, in this embodiment 3, the flexible portion 24 has a short side 241 near the hinge (the hinge where the abutment piece 22 and the clamping block 21 are hinged), and a long side 242 corresponding to the short side 241. An inclined side 243 extending from the short side 241 to the long side 242 is provided on the short side 241, and the inclined side 243 is located on the side of the flexible portion 24 away from the abutment piece 22.

[0035] Therefore, in this third embodiment, the length difference between the long side 242 and the short side 241 is used to compensate for the buffering at different distances between the flexible part 24 and the hinge position. When the abutment piece 22 and the clamping block 21 are parallel, the inclined side 243 is attached to the clamping block 21, and the contact pressure at each point on the inclined side 243 and the contact surface of the clamping block 21 is the same.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A thermally conductive plastic tensile testing assembly, characterized in that, include: Two symmetrically arranged rotating rods (1) are provided with a first rotating position, a second rotating position and a fixed position in sequence on the rotating rods (1). The clamping component (2) is fixed on the fixed position. The clamping component (2) is tightly abutted by pulling the fixed rod (3). The clamping component (2) includes a clamping block (21) fixed on the rotating rod (1) and an abutment piece (22) hinged to the adjacent surfaces of the two clamping blocks (21). The abutment piece (22) is driven to rotate by an abutment stud (23).

2. The thermally conductive plastic tensile testing assembly as described in claim 1, characterized in that, The abutment stud (23) is threaded into the clamping block (21), and the end of the abutment stud (23) near the abutment piece (22) is rotatably connected to the abutment piece (22).

3. The thermally conductive plastic tensile testing assembly as described in claim 1, characterized in that, The abutment piece (22) has a flexible part (24) on the side near the clamping block (21).

4. The thermally conductive plastic tensile testing assembly as described in claim 3, characterized in that, There is a hinge position for hinge between the abutment piece (22) and the clamping block (21). The flexible part (24) has a short side (241) near the hinge position and a long side (242) corresponding to the short side (241). A slant (243) extending to the long side (242) is provided on the short side (241). The slant (243) is located on the side of the flexible part (24) away from the abutment piece (22).

5. The thermally conductive plastic tensile testing assembly as described in claim 2, characterized in that, The abutting stud (23) is fixed with a second adapter (26), and the abutting piece (22) is provided with a first adapter (25) sleeved on the second adapter (26). There is a gap between the second adapter (26) and the first adapter (25).

6. The thermally conductive plastic tensile testing assembly as described in claim 1, characterized in that, The end of the rotating rod (1) away from the clamping block (21) is rotatably connected to the connecting rod (4) and forms the first rotating position.

7. The thermally conductive plastic tensile testing assembly as described in claim 6, characterized in that, The connecting rod (4) is rotatably connected to the fixed seat (5), and the fixed seat (5) is fixed to the fixed rod (3).

8. The thermally conductive plastic tensile testing assembly as described in claim 7, characterized in that, A movable seat (6) is also fitted on the fixed rod (3). The movable seat (6) and the rotating rod (1) are rotatably connected to form a second rotating position, which is located between the first rotating position and the fixed position.

9. The thermally conductive plastic tensile testing assembly as described in claim 8, characterized in that, A spring (7) is also fitted on the fixed rod (3), and the two ends of the spring (7) abut against the movable seat (6) and the fixed seat (5) respectively.

10. The thermally conductive plastic tensile testing assembly as described in claim 7, characterized in that, A limiting block (8) is also fixed on the fixed rod (3), and the limiting block (8) is located on the side of the movable seat (6) away from the fixed seat (5).

Images