Clamp for testing diode
By designing an arc-shaped clamping surface and a motor-driven conveyor belt, the diodes are automatically clamped and fed, solving the problems of low efficiency and high cost of existing fixtures, and improving testing efficiency and result accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HONGSHENG IND CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-05
AI Technical Summary
Existing diode test fixtures suffer from low efficiency and instability when manually clamped, while automated fixtures are complex and costly, making it difficult to meet the needs of large-scale production testing.
Design a fixture that includes a clamping unit and a feeding unit. The clamping unit uses an arc-shaped clamping surface to increase friction. Combined with a motor-driven conveyor belt, it realizes automatic feeding and clamping, ensuring the stability of diodes during the testing process.
It improves testing efficiency, ensures the accuracy of test results, reduces labor intensity, and adapts to the clamping requirements of diodes of different specifications.
Smart Images

Figure CN224203252U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diode testing equipment technology, specifically a diode testing fixture. Background Technology
[0002] During the manufacturing process of diodes, several performance tests are required, such as forward conduction voltage and reverse breakdown voltage. During testing, fixtures are used to clamp and secure the diodes to ensure the accuracy and stability of the tests.
[0003] However, existing diode test fixtures have many problems. Some fixtures use manual clamping, which is not only inefficient but also prone to diode displacement during testing due to the instability of manual operation, affecting the accuracy of the test results. Other fixtures, while achieving a certain degree of automation in loading and clamping, are complex in structure, expensive, and have unsatisfactory clamping performance, making it difficult to meet the needs of large-scale production testing. Therefore, there is an urgent need to design a test fixture that is simple in structure, easy to operate, provides stable clamping, and can adapt to diodes of different specifications.
[0004] Some fixtures use manual clamping, which is inefficient and unstable due to manual operation, and can easily cause the diodes to shift during testing, affecting the accuracy of the test results. Other fixtures, although they achieve a certain degree of automated feeding and clamping, have complex structures, high costs, and unsatisfactory clamping effects, making it difficult to meet the needs of large-scale production testing. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a diode testing fixture, which solves the problems of some fixtures that rely on manual clamping, resulting in low efficiency and instability due to manual operation, which can easily cause the diode to shift during testing and affect the accuracy of the test results; and other fixtures that, while achieving a certain degree of automated feeding and clamping, have complex structures, high costs, and unsatisfactory clamping effects, making it difficult to meet the needs of large-scale production testing.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a diode testing fixture, comprising a clamping unit and a feeding unit, wherein the clamping unit is located to the right of the feeding unit, and the clamping unit includes:
[0007] Support plate;
[0008] A side plate is located above a support plate. A conveyor belt is provided on the inner side of the side plate, and clamping plates are evenly distributed on the outer side of the conveyor belt. Clamping surfaces are provided on both sides of the clamping plates, and the clamping surfaces are arc-shaped.
[0009] Preferably, the support plate is provided with a vertical pole at the top, and the vertical pole is provided with a reinforcing rib on the outside, and the vertical pole is connected to the outside of the side plate.
[0010] Preferably, a transmission roller shaft, a support roller shaft, and a linkage roller shaft are inserted into the inner side of the side plate, and a linkage pulley is sleeved on the outer side of the transmission roller shaft.
[0011] Preferably, the clamping unit is equipped with a motor, which is mounted on a support plate. A transmission pulley is sleeved on the outside of the output end of the motor, and a transmission belt is sleeved on the outside of the transmission pulley. The transmission belt is sleeved on the outside of the linkage pulley.
[0012] Preferably, the feeding unit is provided with a support frame, the top of the support frame is connected to a feeding chute, one end of the feeding chute is connected to a guide rod, and the guide rod corresponds to the conveyor belt.
[0013] Preferably, the feeding chute has a slot corresponding to the clamping plate, and the slot is located inside the guide rod.
[0014] Preferably, a limiting plate is provided above the feeding chute, a support rod is connected to the outside of the limiting plate, the support rod is connected to the outside of the feeding chute, and a diode is placed between the feeding chute and the limiting plate.
[0015] This utility model discloses a diode testing fixture, which has the following beneficial effects:
[0016] The arc-shaped clamping surface can fit tightly against the diode, increasing friction and effectively preventing the diode from shifting during testing, thus ensuring the accuracy of the test results.
[0017] The automatic feeding of diodes by the feeding unit, combined with the automatic operation of the clamping unit, greatly improves testing efficiency, reduces manual operation, and lowers labor intensity. Attached Figure Description
[0018] 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.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the clamping unit of this utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the clamping plate of this utility model;
[0022] Figure 4 This is a schematic diagram of the feeding unit of this utility model.
[0023] In the diagram: 1. Clamping unit; 11. Support plate; 111. Upright pole; 112. Reinforcing rib; 12. Side plate; 121. Drive roller shaft; 1211. Linkage pulley; 122. Support roller shaft; 123. Linkage roller shaft; 124. Conveyor belt; 1241. Clamping plate; 1242. Clamping surface; 13. Motor; 131. Drive pulley; 132. Drive belt; 2. Feeding unit; 21. Support frame; 22. Feeding chute; 221. Guide rod; 23. Limiting plate; 231. Support rod; 24. Diode. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] This application provides a diode testing fixture that solves the problems of some fixtures that rely on manual clamping, which are inefficient and unstable due to manual operation, easily causing diode displacement during testing and affecting the accuracy of test results; and other fixtures that, while achieving a certain degree of automated feeding and clamping, are complex in structure, costly, and have unsatisfactory clamping effects, making it difficult to meet the needs of large-scale production testing. This application aims to enhance clamping stability and improve testing efficiency.
[0026] This utility model discloses a diode testing fixture.
[0027] Example 1
[0028] According to the appendix Figure 1-4 As shown, a diode testing fixture includes a clamping unit 1 and a feeding unit 2. The clamping unit 1 is located to the right of the feeding unit 2. The clamping unit 1 includes a support plate 11 and a side plate 12. The side plate 12 is located above the support plate 11. A conveyor belt 124 is arranged inside the side plate 12. A clamping plate 1241 is evenly distributed outside the conveyor belt 124. Clamping surfaces 1242 are opened on both sides of the clamping plate 1241. The clamping surfaces 1242 are arc-shaped.
[0029] The arc-shaped clamping surface 1242 can fit tightly against the diode 24, increasing friction and effectively preventing the diode 24 from shifting during the test, thus ensuring the accuracy of the test results. The automatic feeding of the diode 24 is achieved through the feeding unit 2, which, together with the automatic operation of the clamping unit 1, greatly improves the testing efficiency, reduces manual operation, and lowers labor intensity.
[0030] Furthermore, a vertical pole 111 is provided on the top of the support plate 11, and a reinforcing rib 112 is provided on the outside of the vertical pole 111. The vertical pole 111 is connected to the outside of the side plate 12.
[0031] Furthermore, a transmission roller shaft 121, a support roller shaft 122, and a linkage roller shaft 123 are inserted into the inner side of the side plate 12, and a linkage pulley 1211 is sleeved on the outer side of the transmission roller shaft 121.
[0032] Specifically disclosed, the clamping unit 1 is equipped with a motor 13, which is mounted on the support plate 11. A transmission pulley 131 is sleeved on the outside of the output end of the motor 13, and a transmission belt 132 is sleeved on the outside of the transmission pulley 131. The transmission belt 132 is sleeved on the outside of the linkage pulley 1211.
[0033] Specifically disclosed, the feeding unit 2 is equipped with a support frame 21, the top of the support frame 21 is connected to a feeding chute 22, one end of the feeding chute 22 is connected to a guide rod 221, and the guide rod 221 corresponds to the conveyor belt 124.
[0034] It should be emphasized that the feeding chute 22 has a slot corresponding to the clamping plate 1241, and the slot is located inside the guide rod 221.
[0035] Example 2
[0036] According to the appendix Figure 1-4 As shown, a diode testing fixture includes a clamping unit 1 and a feeding unit 2. The clamping unit 1 is located to the right of the feeding unit 2. The clamping unit 1 includes a support plate 11 and a side plate 12. The side plate 12 is located above the support plate 11. A conveyor belt 124 is arranged inside the side plate 12. A clamping plate 1241 is evenly distributed outside the conveyor belt 124. Clamping surfaces 1242 are opened on both sides of the clamping plate 1241. The clamping surfaces 1242 are arc-shaped.
[0037] It should be emphasized that a limiting plate 23 is provided above the feeding chute 22, and a support rod 231 is connected to the outside of the limiting plate 23. The support rod 231 is connected to the outside of the feeding chute 22, and a diode 24 is placed between the feeding chute 22 and the limiting plate 23.
[0038] Working principle: When diode 24 slides to the guide rod 221 at one end of the feeding chute 22, driven by the operation of the conveyor belt 124, the clamping plate 1241 moves diode 24 onto the conveyor belt 124. As the conveyor belt 124 continues to operate, the arc-shaped clamping surfaces 1242 on both sides of the clamping plate 1241 stably clamp diode 24. The clamped diode 24 moves to the test position with the conveyor belt 124, where various performance tests can be performed. After the test is completed, diode 24 continues to move with the conveyor belt 124, leaving the test area, completing one test cycle. Throughout the process, the stable operation of the conveyor belt 124 is ensured by the upright rod 111 and the reinforcing rib 112. The setting of the limiting plate 23 and the slot ensures the accuracy and stability of diode 24 feeding and clamping.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A diode testing fixture, comprising a clamping unit (1) and a loading unit (2), wherein the clamping unit (1) is located to the right of the loading unit (2), characterized in that, The clamping unit (1) includes: Support plate (11); Side plate (12), the side plate (12) is located above the support plate (11), a conveyor belt (124) is provided on the inner side of the side plate (12), and a clamping plate (1241) is provided on the outer side of the conveyor belt (124). The clamping plate (1241) has clamping surfaces (1242) on both sides, and the clamping surfaces (1242) are set in an arc shape.
2. The diode testing fixture according to claim 1, characterized in that, The support plate (11) is provided with a vertical pole (111) on the top, and a reinforcing rib (112) is provided on the outside of the vertical pole (111). The vertical pole (111) is connected to the outside of the side plate (12).
3. A diode testing fixture according to claim 1, characterized in that, The inner side of the side plate (12) is fitted with a transmission roller shaft (121), a support roller shaft (122) and a linkage roller shaft (123), and the outer side of the transmission roller shaft (121) is fitted with a linkage pulley (1211).
4. A diode testing fixture according to claim 3, characterized in that, The clamping unit (1) is equipped with a motor (13), which is mounted on the support plate (11). A transmission pulley (131) is sleeved on the outside of the output end of the motor (13), and a transmission belt (132) is sleeved on the outside of the transmission pulley (131). The transmission belt (132) is sleeved on the outside of the linkage pulley (1211).
5. A diode testing fixture according to claim 1, characterized in that, The feeding unit (2) is provided with a support frame (21), and a feeding chute (22) is connected to the top of the support frame (21). A guide rod (221) is connected to one end of the feeding chute (22), and the guide rod (221) corresponds to the conveyor belt (124).
6. A diode testing fixture according to claim 5, characterized in that, The feeding chute (22) has a slot corresponding to the clamping plate (1241), and the slot is located inside the guide rod (221).
7. A diode testing fixture according to claim 6, characterized in that, A limiting plate (23) is provided above the feeding chute (22). A support rod (231) is connected to the outside of the limiting plate (23). The support rod (231) is connected to the outside of the feeding chute (22). A diode (24) is placed between the feeding chute (22) and the limiting plate (23).