Clamping device suitable for tensile test of plastic product
The clamping device, driven by a sliding support and a cylinder, enables rapid assembly and disassembly of the fixture and stable clamping in the tensile testing of plastic products. This solves the problem of complex operation of traditional devices and improves the efficiency and accuracy of the test.
Patent Information
- Application Number
- CN202520803659.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-03
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Traditional clamping devices for tensile testing of plastic products are difficult to change quickly and easily with clamps of different specifications or shapes. The operation is complicated and time-consuming, which affects the accuracy and consistency of test results.
The clamping device, which uses a sliding support and a cylinder-driven mechanism, enables quick assembly and disassembly of the mounting base and fixture through a combination of transmission rod and rotating disk. The cylinder drives the movement of the moving plate and connecting plate, ensuring the stability and reliability of the clamping.
It improves the efficiency of fixture replacement and ease of operation, ensures the stability of clamping and the accuracy of test results, adapts to plastic products of different specifications and shapes, and enhances the flexibility and accuracy of testing.
Smart Images
Figure CN224081331U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping device technology, and in particular to a clamping device suitable for tensile testing of plastic products. Background Technology
[0002] Tensile testing of plastic products is a crucial method for evaluating their mechanical properties and is widely used in materials performance research and product quality inspection. During the testing process, specialized clamping devices are required to secure the plastic products and ensure the accuracy and repeatability of the results. These clamping devices not only need to provide stable clamping force but also need to be adaptable to plastic samples of different sizes and shapes.
[0003] Traditional clamping devices for tensile testing of plastic products generally employ mechanical or pneumatic clamps. Their usage primarily involves the following steps: First, select a suitable clamping device based on the size and shape of the plastic sample to be tested, and adjust the clamp opening to fit the sample. Next, fix the sample between the upper and lower clamps, ensuring its longitudinal axis is aligned with the clamps to avoid uneven force during testing. Then, set the parameters according to the tensile testing machine's requirements (such as tensile speed, initial force, etc.) and start the equipment for the tensile test. Finally, after the test, release the clamps, remove the sample, and clean the clamping device to ensure it is ready for the next test. Correct use of the clamps can effectively reduce sample slippage or damage, improving the accuracy of test results.
[0004] Traditional clamping devices for tensile testing of plastic products mostly employ fixed clamping structures, using simple bolts or mechanical clamps to hold the specimen. These are typically only suitable for clamping specimens of specific sizes. Changing to clamps of different sizes or shapes requires complex disassembly and assembly procedures, which are complicated and time-consuming. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a clamping device suitable for tensile testing of plastic products, aiming to improve the problem that traditional clamping devices for tensile testing of plastic products are difficult to quickly and conveniently change clamps of different specifications or shapes, thus making the operation complicated and time-consuming.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a clamping device suitable for tensile testing of plastic products, comprising a sliding support, a transmission rod rotatably connected inside the sliding support, a handle fixedly connected to one end of the transmission rod, a rotating disk fixedly connected to the other end of the transmission rod, a mounting base slidably connected to the outer wall of the sliding support, a clamp fixedly connected to the outer wall of the mounting base, an installation hole provided inside the mounting base, and the outer wall of the rotating disk rotatably connected inside the sliding support. A disassembly and assembly assembly is provided inside the rotating disk for disassembling and assembling the mounting base.
[0007] The assembly / disassembly assembly includes a slide rod, the outer wall of which is slidably connected to the inside of the rotating disk. A locking block is fixedly connected to the outer wall of the slide rod, the outer wall of which is slidably connected to the inside of the transmission rod and the mounting base. A limit block is fixedly connected to the outer wall of the locking block.
[0008] Furthermore, a worktable is slidably connected to the lower surface of the sliding support, a cylinder is fixedly connected inside the worktable, a moving plate is fixedly connected to the output end of the cylinder, connecting plates are rotatably connected to both the left and right sides of the moving plate, a rotating shaft is rotatably connected to the middle of the connecting plate, a slide rod is slidably connected to one end of the connecting plate, a slider is fixedly connected to the outside of the slide rod, and a guide rail is slidably connected inside the slider.
[0009] Furthermore, the lower surface of the sliding support is fixedly connected to the upper surface of the slider, and the slider is used to drive the sliding support to move.
[0010] Furthermore, the guide rail is fixedly connected inside the worktable, and the guide rail is used to guide the slider.
[0011] Furthermore, the card block is slidably connected inside the mounting hole, which is used to limit the movement of the card block.
[0012] Furthermore, the outer wall of the limiting block is slidably connected to the inside of the transmission rod, and the limiting block is used to limit the movement of the locking block.
[0013] Furthermore, both ends of the rotating shaft are fixedly connected to the inside of the worktable, and the rotating shaft is used to limit the position of the connecting plate.
[0014] Furthermore, the connecting plate is rotatably connected inside the worktable, and the connecting plate is used to drive the slider to move.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, the drive handle first drives the transmission rod to rotate inside the sliding support, thereby driving the rotating disk to rotate. This further causes the slide rod to slide in the arc-shaped groove inside the rotating disk, and then the slide rod drives the locking block to slide inside the sliding support and the mounting base. During this process, the limiting block guides the locking block, thereby realizing the quick disassembly and replacement of the mounting base and the fixture on the outer wall of the mounting base. This greatly improves the operating efficiency and reduces the operational complexity when changing fixtures, meeting the testing needs of plastic products of different specifications.
[0017] 2. In this utility model, by opening cylinder one, the moving plate is driven to slide in the groove inside the connecting plate, causing the connecting plate to rotate around the pivot, pushing the sliding rod to move in the groove inside the connecting plate, and then driving the slider to slide along the guide rail. Thus, the sliding support drives the clamping plate to clamp and fix the plastic product. Through the cooperation of the guide rail and the slider, the stable movement trajectory of the clamping plate is achieved, ensuring the stability and reliability of the clamping, effectively avoiding the problem of sample slippage or damage caused by loose clamping during the test, and improving the accuracy and consistency of the test results. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a clamping device suitable for tensile testing of plastic products proposed in this utility model.
[0019] Figure 2 This is a schematic diagram of the internal structure of the sliding support of a clamping device suitable for tensile testing of plastic products proposed in this utility model.
[0020] Figure 3 This is a schematic diagram of one side of the rotating disk structure of a clamping device suitable for tensile testing of plastic products proposed in this utility model.
[0021] Figure 4 This is a schematic diagram of the internal structure of the workbench of a clamping device suitable for tensile testing of plastic products proposed in this utility model.
[0022] Legend:
[0023] 1. Sliding support; 2. Handle; 3. Transmission rod; 4. Mounting base; 5. Clamp; 6. Rotary disk; 7. Slide rod one; 8. Locking block; 9. Limiting block; 10. Mounting hole; 11. Worktable; 12. Cylinder one; 13. Moving plate; 14. Connecting plate; 15. Rotating shaft; 16. Slide rod two; 17. Slider; 18. Guide rail. 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] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a clamping device suitable for tensile testing of plastic products, comprising a sliding support 1, a transmission rod 3 rotatably connected inside the sliding support 1, a handle 2 fixedly connected to one end of the transmission rod 3, a rotating disk 6 fixedly connected to the other end of the transmission rod 3, a mounting base 4 slidably connected to the outer wall of the sliding support 1, a clamp 5 fixedly connected to the outer wall of the mounting base 4, an installation hole 10 opened inside the mounting base 4, the outer wall of the rotating disk 6 rotatably connected to the inside of the sliding support 1, and a disassembly and assembly assembly provided inside the rotating disk 6 for disassembling and assembling the mounting base 4;
[0026] The assembly and disassembly assembly includes a slide rod 7, the outer wall of which is slidably connected to the inside of the rotating disk 6, a locking block 8 is fixedly connected to the outer wall of the slide rod 7, the outer wall of the locking block 8 is slidably connected to the inside of the transmission rod 3 and the mounting base 4, and a limit block 9 is fixedly connected to the outer wall of the locking block 8.
[0027] Specifically, the operator first drives the transmission rod 3 to rotate inside the sliding support 1 by driving the handle 2. As one end of the transmission rod 3 rotates, the other end drives the rotating disk 6 to rotate synchronously. During the rotation of the rotating disk 6, the pre-set arc-shaped groove inside it drives the slide rod 7 to slide along a specific trajectory. The movement of the slide rod 7 further causes the locking block 8 to move in a straight line inside the sliding support 1 and the mounting base 4. At the same time, the limiting block 9 effectively guides the sliding trajectory of the locking block 8, ensuring the smoothness and accuracy of the movement. This avoids the difficulty of disassembly and assembly caused by the locking block 8 being offset or stuck. It can efficiently realize the disassembly and replacement of the mounting base 4 and its outer wall clamp 5. Compared with the traditional manual replacement method, it not only simplifies the operation steps, but also significantly improves the replacement efficiency and reduces working time. At the same time, it is applicable to the disassembly and assembly needs of various specifications and shapes of plastic product clamps 5, significantly enhancing the flexibility and versatility of the testing device and meeting the diversified needs of modern testing.
[0028] Reference Figure 1 and Figure 4A worktable 11 is slidably connected to the lower surface of the sliding support 1. A cylinder 12 is fixedly connected inside the worktable 11. A moving plate 13 is fixedly connected to the output end of the cylinder 12. Connecting plates 14 are rotatably connected to both sides of the moving plate 13. A rotating shaft 15 is rotatably connected to the middle of the connecting plate 14. A sliding rod 16 is slidably connected to one end of the connecting plate 14. A slider 17 is fixedly connected to the outside of the sliding rod 16. A guide rail 18 is slidably connected inside the slider 17. The lower surface of the sliding support 1 is fixedly connected to the upper surface of the slider 17. The slider 17 is used to carry... The movable sliding support 1 moves, the guide rail 18 is fixedly connected inside the worktable 11, the guide rail 18 is used to guide the slider 17, the locking block 8 is slidably connected inside the mounting hole 10, the mounting hole 10 is used to limit the locking block 8, the outer wall of the limiting block 9 is slidably connected inside the transmission rod 3, the limiting block 9 is used to limit the locking block 8, both ends of the rotating shaft 15 are fixedly connected inside the worktable 11, the rotating shaft 15 is used to limit the connecting plate 14, the connecting plate 14 is rotatably connected inside the worktable 11, and the connecting plate 14 is used to drive the slider 17 to move;
[0029] Specifically, by activating cylinder 12 inside the workbench 11, the output end of cylinder 12 drives the moving plate 13 to move along a preset direction. The edges on both sides of the moving plate 13 slide within the grooves inside the connecting plate 14, smoothly transmitting the driving force to the connecting plate 14, causing it to rotate around the pivot 15. The rotation of the connecting plate 14 further pushes the sliding rod 16 to move along its internal groove. The movement trajectory of the sliding rod 16 drives the slider 17 to slide linearly above the guide rail 18. As the slider 17 moves, the sliding support 1 gradually drives the clamp 5 to clamp and fix the sample, ensuring the smoothness and accuracy of the clamping action. This not only provides sufficient clamping force to prevent the sample from sliding during the stretching process, but also effectively avoids sample damage caused by excessive clamping, achieving stable clamping of plastic products and providing a solid foundation for subsequent tensile testing, while improving the accuracy and reliability of the test results.
[0030] Working principle: When a clamping device suitable for tensile testing of plastic products is required, the drive handle 2 drives the transmission rod 3 to rotate inside the sliding support 1, thereby driving the rotating disk 6 to rotate through one end of the transmission rod 3. This causes the four slide rods 7 to slide in the arc-shaped groove inside the rotating disk 6. The sliding of the slide rods 7 then drives the locking block 8 to slide inside the sliding support 1 and the mounting base 4. During this process, the locking block 8 is guided by the limiting block 9, thereby achieving the effect of disassembling and replacing the mounting base 4 and the clamp 5 on the outer wall of the mounting base 4.
[0031] In addition, the cylinder 12 inside the workbench 11 is activated, and the output end of the cylinder 12 drives the moving plate 13 to move, so that the two sides of the moving plate 13 slide in the preset groove inside the connecting plate 14, thereby pulling the connecting plate 14 to rotate around the pivot 15. Then, the other end of the connecting plate 14 pushes the slide rod 16 to move, so that the slide rod 16 slides in the preset groove inside the connecting plate 14, thereby driving the slider 17 to slide above the guide rail 18, and then driving the clamp 5 to clamp and fix the plastic product through the sliding support 1, thus achieving the fixing effect.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A clamping device suitable for tensile testing of plastic products, comprising a sliding support (1), characterized in that: The inside of the sliding support (1) is rotatably connected with a transmission rod (3), one end of the transmission rod (3) is fixedly connected with a handle (2), the other end of the transmission rod (3) is fixedly connected with a rotating disc (6), the outer wall of the sliding support (1) is slidably connected with a mounting seat (4), the outer wall of the mounting seat (4) is fixedly connected with a clamp (5), the inside of the mounting seat (4) is provided with a mounting hole (10), the outer wall of the rotating disc (6) is rotatably connected in the inside of the sliding support (1), the inside of the rotating disc (6) is provided with a dismounting assembly, the dismounting assembly is used for dismounting the mounting seat (4). The dismounting assembly comprises a sliding rod one (7), the outer wall of the sliding rod one (7) is slidably connected in the inside of the rotating disc (6), the outer wall of the sliding rod one (7) is fixedly connected with a clamping block (8), the outer wall of the clamping block (8) is slidably connected in the inside of the transmission rod (3) and the mounting seat (4), the outer wall of the clamping block (8) is fixedly connected with a limiting block (9).
2. The clamping device for tensile testing of plastic products according to claim 1, characterized in that: The lower surface of the sliding support (1) is slidably connected with a workbench (11), the inside of the workbench (11) is fixedly connected with a cylinder one (12), the output end of the cylinder one (12) is fixedly connected with a moving plate (13), the left and right sides of the moving plate (13) are rotatably connected with a connecting plate (14), the middle part of the connecting plate (14) is rotatably connected with a rotating shaft (15), one end of the connecting plate (14) is slidably connected with a sliding rod two (16), the outside of the sliding rod two (16) is fixedly connected with a sliding block (17), the inside of the sliding block (17) is slidably connected with a guide rail (18).
3. The clamping device for tensile testing of plastic products according to claim 2, characterized in that: The lower surface of the sliding support (1) is fixedly connected with the upper surface of the sliding block (17), the sliding block (17) is used for driving the sliding support (1) to move.
4. The clamping device for tensile testing of plastic products according to claim 2, characterized in that: The guide rail (18) is fixedly connected in the inside of the workbench (11), and the guide rail (18) is used for guiding the sliding block (17).
5. The gripping device for tensile testing of plastic products according to claim 1, characterized in that: The clamping block (8) is slidably connected in the inside of the mounting hole (10), and the mounting hole (10) is used for limiting the clamping block (8).
6. The gripping device for tensile testing of plastic products according to claim 1, characterized in that: The limiting block (9) is slidably connected in the inside of the transmission rod (3), and the limiting block (9) is used for limiting the clamping block (8).
7. The gripping device for tensile testing of plastic products according to claim 2, characterized in that: Both ends of the rotating shaft (15) are fixedly connected in the inside of the workbench (11), and the rotating shaft (15) is used for limiting the connecting plate (14).
8. The gripping device for tensile testing of plastic products according to claim 2, characterized in that: The connecting plate (14) is rotatably connected in the inside of the workbench (11), and the connecting plate (14) is used for driving the sliding block (17) to move.