Chuck for yellowing resistance test

Abstract

The utility model relates to a chuck for an anti-yellowing test, which comprises a mounting disc, a rotary base arranged at the lower part of the mounting disc, a magnetic attraction block arranged on the mounting disc, a mounting seat placed on the mounting disc, a positioning piece connected to the lower part of the mounting seat, a worm rotatably connected to the rear side of the left part of the mounting seat, and a screw rotatably connected to the left part of the mounting seat, a guide rod is connected between the front side and the rear side of the right portion of the installation base, a first clamping block is connected to the upper side of the rear portion of the moving piece in a sliding mode, and a second clamping block is connected to the upper side of the front portion of the moving piece in a sliding mode. According to the utility model, the stability and accurate positioning of the mounting seat are ensured through the clamping connection of the positioning hole and the positioning piece and the adsorption effect of the magnetic suction block, the position of the mounting seat can be flexibly adjusted through the rotating base, the clamping force is moderate through a transmission mechanism of the worm, the worm gear and the screw rod, the clamping distance is adjusted, and the clamping force is moderate through the spring, so that the sample can be prevented from being damaged due to overlarge clamping force.

Description

Technical Field

[0001] This utility model relates to the field of materials testing technology, and in particular to a chuck for testing yellowing resistance. Background Technology

[0002] Yellowing resistance refers to a material's ability to resist yellowing of its surface color under conditions of light, heat aging, or other environmental factors. Yellowing resistance is one of the important indicators for measuring the durability and stability of a material. Traditional yellowing resistance testing devices often suffer from problems such as unstable clamping, inaccurate adjustment, and complex operation, making it difficult to meet diverse testing needs. Existing fixtures are prone to sample damage or displacement due to uneven clamping force, affecting the accuracy of test results. Furthermore, the installation and adjustment process of the testing device is cumbersome, reducing testing efficiency. At the same time, traditional devices lack flexible position adjustment functions, making it difficult to adapt to the testing needs of samples of different specifications.

[0003] To address the above issues, a chuck for testing yellowing resistance has been developed. Utility Model Content

[0004] To overcome the shortcomings of existing clamps, such as uneven clamping force leading to sample damage or displacement, affecting the accuracy of test results, cumbersome installation and adjustment of testing devices reducing testing efficiency, and lack of flexible position adjustment function, making it difficult to adapt to the testing needs of samples of different specifications, this utility model provides a chuck for yellowing resistance testing.

[0005] The technical solution of this utility model is as follows: a chuck for testing yellowing resistance, comprising a mounting plate with four positioning holes, a rotating base at the bottom of the mounting plate, five magnetic blocks on the mounting plate, and a mounting seat placed on the mounting plate, the mounting seat being able to attract the magnetic blocks. Four positioning members are connected to the lower part of the mounting seat, each positioning member engaging with a corresponding positioning hole. A worm gear is rotatably connected to the rear left side of the mounting seat, and a lead screw is rotatably connected to the left side of the mounting seat. A worm gear is connected to the rear side, and the worm gear meshes with the worm. A movable component is threadedly connected to the lead screw, and the movable component is slidably connected to the mounting base. A guide rod is connected between the front and rear sides of the right side of the mounting base, and the guide rod is slidably connected to the movable component. A first clamping block is slidably connected to the upper rear side of the movable component, and three springs are connected between the first clamping block and the movable component. A second clamping block is slidably connected to the upper front side of the movable component, and three springs are also connected between the second clamping block and the movable component.

[0006] Preferably, it also includes an adjusting rod, which is rotatably connected to the upper rear side of the moving part, and the adjusting rod is threadedly connected to the first clamping block.

[0007] Preferably, the mounting base has handles connected to both the front and rear sides.

[0008] Preferably, the mounting base is a detachable connection structure.

[0009] Preferably, the worm gear has anti-slip texture.

[0010] Preferably, both the first clamping block and the second clamping block have oblique anti-slip textures on their inner sides.

[0011] By adopting the above technical solutions, the beneficial effects of this utility model are as follows:

[0012] This invention uses a positioning hole to engage with a positioning component, combined with the magnetic attraction of a magnetic block, to ensure the stability and precise positioning of the mounting base. The rotating base allows for flexible adjustment of the mounting base to adapt to different testing needs. Furthermore, the worm gear, worm wheel, and lead screw transmission mechanism enables precise adjustment of the clamping distance. The spring ensures moderate clamping force, securing the sample while preventing damage due to excessive clamping force. The adjusting rod allows for fine-tuning of the clamping force, further improving testing accuracy. The overall structure features a detachable connection, facilitating sample installation and replacement, simplifying operation, and improving testing efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a partial unfolded cross-sectional three-dimensional structural diagram of the present invention.

[0015] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the present invention.

[0016] The labels in the diagram are as follows: 1. Mounting plate, 2. Rotating base, 3. Magnetic block, 4. Mounting seat, 5. Positioning component, 6. Moving component, 7. First clamping block, 8. Spring, 9. Second clamping block, 10. Adjusting rod, 11. Worm gear, 12. Lead screw, 13. Worm wheel, 14. Guide rod. Detailed Implementation

[0017] 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.

[0018] A chuck for testing resistance to yellowing, such as Figures 1-3As shown, the device includes a mounting plate 1 with four positioning holes, a rotating base 2 at the bottom, five magnetic blocks 3 on the mounting plate 1, and a mounting seat 4 placed on the mounting plate 1. The mounting seat 4 has handles connected to both its front and rear sides and can attract the magnetic blocks 3. Four positioning elements 5 are connected to the bottom of the mounting seat 4, each engaging with its corresponding positioning hole. The mounting seat 4 has a detachable connection structure. A worm gear 11 is rotatably connected to the rear left side of the mounting seat 4, and the worm gear 11 has anti-slip textures. A lead screw 12 is rotatably connected to the left side of the mounting seat 4, and a worm wheel 13 is connected to the rear side of the lead screw 12, meshing with the worm gear 11. The screw 12 is threadedly connected to a movable part 6, which is slidably connected to the mounting base 4. A guide rod 14 is connected between the front and rear sides of the right side of the mounting base 4, and the guide rod 14 is slidably connected to the movable part 6. A first clamping block 7 is slidably connected to the upper rear side of the movable part 6, and three springs 8 are connected between the first clamping block 7 and the movable part 6. A second clamping block 9 is slidably connected to the upper front side of the movable part 6. Both the first clamping block 7 and the second clamping block 9 have oblique anti-slip textures on their inner sides. Three springs 8 are also connected between the second clamping block 9 and the movable part 6. An adjusting rod 10 is rotatably connected to the upper rear side of the movable part 6, and the adjusting rod 10 is threadedly connected to the first clamping block 7.

[0019] It should be noted that yellowing resistance refers to a material's ability to resist yellowing of its surface color under conditions of light, heat aging, or other environmental factors. Yellowing resistance is one of the important indicators for measuring the durability and stability of a material. During the yellowing resistance test, the positioning hole is first engaged with the positioning piece 5 to ensure that the mounting base 4 can be accurately and securely installed on the mounting plate 1. Simultaneously, the magnetic block 3 is attracted to the mounting base 4, further enhancing its stability. The rotating base 2 allows the mounting base 4 to be flexibly adjusted in position as needed. Next, the sample is placed between the first clamping block 7 and the second clamping block 9, and the worm gear 11 is rotated, causing the worm wheel 13 to rotate. The movement of the spring 8 causes the lead screw 12 to rotate, which in turn causes the moving part 6 to slide under the guidance of the guide rod 14. This adjusts the moving part 6 to a suitable position, ensuring that the distance between the first clamping block 7 and the second clamping block 9 is appropriate for the sample specifications. At the same time, the elastic force of the spring 8 ensures that the clamping force of the clamping blocks on the sample is moderate, avoiding damage to the sample due to excessive clamping force. Furthermore, the anti-slip texture on the inner side of the first clamping block 7 and the second clamping block 9 can better prevent the sample from shifting during the test. In addition, when further precise control of the clamping force is required, the adjusting rod 10 can be rotated to fine-tune the position of the first clamping block 7, thereby further precisely controlling the clamping force.

[0020] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A chuck for testing resistance to yellowing, characterized in that, The system includes a mounting plate (1) with four positioning holes, a rotating base (2) at the bottom, five magnetic blocks (3) on the mounting plate (1), and a mounting seat (4) on the mounting plate (1) that can attract the magnetic blocks (3). Four positioning elements (5) are connected to the bottom of the mounting seat (4), each of which engages with its corresponding positioning hole. A worm gear (11) is rotatably connected to the rear left side of the mounting seat (4), and a lead screw (12) is rotatably connected to the left side of the mounting seat (4). A worm wheel (13) is connected to the rear side of the lead screw (12). 13) Engages with the worm (11), and a moving part (6) is threadedly connected to the lead screw (12). The moving part (6) is slidably connected to the mounting base (4). A guide rod (14) is connected between the front and rear sides of the right side of the mounting base (4). The guide rod (14) is slidably connected to the moving part (6). A first clamping block (7) is slidably connected to the upper rear side of the moving part (6). Three springs (8) are connected between the first clamping block (7) and the moving part (6). A second clamping block (9) is slidably connected to the upper front side of the moving part (6). Three springs (8) are also connected between the second clamping block (9) and the moving part (6).

2. The chuck for yellowing resistance testing as described in claim 1, characterized in that, It also includes an adjusting rod (10), which is rotatably connected to the upper rear side of the moving part (6), and the adjusting rod (10) is threadedly connected to the first clamping block (7).

3. The chuck for yellowing resistance testing as described in claim 1, characterized in that, The mounting base (4) has handles on both the front and rear sides.

4. The chuck for yellowing resistance testing as described in claim 1, characterized in that, The mounting base (4) is a detachable connection structure.

5. The chuck for yellowing resistance testing as described in claim 1, characterized in that, The worm gear (11) is provided with anti-slip texture.

6. The chuck for yellowing resistance testing as described in claim 1, characterized in that, Both the first clamping block (7) and the second clamping block (9) have oblique anti-slip textures on their inner sides.

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