Voltage limiting test device for power diode

Abstract

The utility model discloses a voltage limiting testing device for a power diode, which relates to the technical field of diode testing and comprises a fixing mechanism, a crimping mechanism is sleeved at the upper end of the fixing mechanism in a lifting manner, and a conveying mechanism is movably arranged in the fixing mechanism. According to the utility model, the problems of difficulty in continuous testing, low efficiency and difficulty in fixing the testing position of the diode in the existing diode testing tool are solved, the conveying mechanism is arranged, the chain blocks move along the chutes to realize the continuous testing of the power diode, and the plurality of groups of chain blocks are mutually and rotatably connected, so that the testing efficiency is improved. The two ends of the power diode are externally connected with chain wheels, circulating conveying is achieved, the power diode and the centering block are crimped through the crimping mechanism, the two sets of side pressing blocks are pushed inwards under the pressurization effect of the crimping mechanism, the power diode is centered, pins at the two ends of the power diode are aligned with test points, and then the pins are positioned and pressurized through the positioning block. And the voltage limiting test is realized.

Description

Technical Field

[0001] This utility model relates to the field of diode testing technology, specifically a voltage limiting test device for power diodes. Background Technology

[0002] Voltage limiting tests for power diodes typically refer to testing their maximum reverse withstand voltage or reverse breakdown voltage. During the test, the voltage should be increased slowly to avoid misjudgment caused by a rapid voltage rise. Protective resistors and load resistors should be used to limit the current and prevent damage to the diode. At the same time, safety regulations should be followed during the test to ensure the safety of the operators.

[0003] A diode testing fixture with authorization announcement number CN221804074U includes an operating table and multiple sets of movable boxes. The operating table has multiple test slots inside, and the ends of the movable boxes can pass through the test slots. A moving mechanism is provided on the operating table, comprising a moving component and a limiting component. The moving component includes a mounting strip, on which three sets of vertical plates are fixedly mounted. A connecting rod is fixedly mounted on the back of each vertical plate, and the end of the connecting rod is fixedly connected to the movable box. This designed moving mechanism allows multiple movable boxes to be pushed into the test slots together for testing, and then pulled out together after testing, eliminating the need for operators to push or pull out the movable boxes one by one. Existing diode testing fixtures typically require manual loading and replacement, making continuous testing difficult and inefficient. Furthermore, the diode's test position is difficult to fix, making it difficult to calibrate the two ends of the diode during testing.

[0004] To address the aforementioned issues, a voltage limiting test device for power diodes is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a voltage limiting test device for power diodes, which solves the problems in the prior art where existing diode test fixtures usually require manual loading and replacement, making continuous testing difficult and inefficient, and the diode test position is difficult to fix, making it difficult to calibrate the two ends of the diode during testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a voltage limiting test device for power diodes, comprising a fixing mechanism, a pressing mechanism being lifted and sleeved at the upper end of the fixing mechanism, a conveying mechanism being movably arranged inside the fixing mechanism, the fixing mechanism including a snap-fit ​​block, two sets of side pressing blocks being fixedly arranged on both sides of the upper end of the snap-fit ​​block, a centering block being fixedly arranged between the two sets of side pressing blocks, test points being arranged at both ends of the centering block, and a sliding groove being opened in the center of the centering block, the pressing mechanism including a positioning block for pressing the test points, and the conveying mechanism including a chain block that rotates and sleeves with each other, a power diode being placed on the chain block, and pins being arranged on both sides of the power diode.

[0007] Preferably, the fixing mechanism further includes a snap-fit ​​base plate disposed at the lower end, with support columns fixedly disposed at the four corners of the snap-fit ​​base plate, and a pressing mechanism fixedly disposed at the upper end of the support columns.

[0008] Preferably, guide posts are fixedly provided at the four corners of the upper end of the snap-fit ​​block, and the side pressure blocks are provided on both sides, with the outer side of the side pressure blocks set at an angle.

[0009] Preferably, the pressing mechanism further includes a support plate fixedly disposed on the upper end of the support column, a cylinder component fixedly disposed at the upper center of the support plate, and a locking block sleeved on the lower end of the cylinder component.

[0010] Preferably, an L-shaped block is mirror-image disposed at the upper end of the locking block, and a centering pressure block is fixed at the middle of the lower end of the locking block.

[0011] Preferably, two sets of rollers are fixedly arranged on both sides of the central pressure block, and three sets of diode pressure blocks are arranged side by side in the central pressure block.

[0012] Preferably, one side of the chain block is fixedly configured as a rotating rod, and the other side has a rotating groove.

[0013] Preferably, the upper end of the chain block is provided with a positioning groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model provides a voltage limiting test device for power diodes. Through the setting of the conveying mechanism, the chute provides a slide rail for the chain block. The chain block moves along the chute to realize the continuous testing of power diodes. Multiple sets of chain blocks are connected to each other by rotation. The two ends are connected to external sprockets to realize cyclic conveying. This solves the problem that the existing diode test fixtures usually require manual loading and replacement, and it is difficult to conduct continuous testing and has low efficiency.

[0016] 2. The present invention provides a voltage limiting test device for power diodes. By pressing the power diode and the centering block together through a pressing mechanism, the two sets of side pressing blocks are pushed inward under the pressure of the pressing mechanism to achieve the centering of the power diode. The pins at both ends of the power diode are aligned with the test points. Then, the voltage limiting test is achieved by positioning and pressing through the positioning block. This solves the problem that the test position of the existing diode test fixture is difficult to fix, making it difficult to calibrate the two ends of the diode during the test. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the crimping mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the pressing mechanism and conveying mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixing mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the conveying mechanism of this utility model.

[0023] In the diagram: 1. Fixing mechanism; 11. Snap-fit ​​base plate; 12. Support column; 13. Snap-fit ​​block; 131. Guide column; 14. Side pressure block; 141. Angled angle; 15. Centering block; 151. Test point; 152. Slide groove; 2. Pressing mechanism; 21. Support plate; 22. Cylinder component; 23. Snap-fit ​​block; 231. L-shaped block; 24. Centering pressure block; 25. Roller; 26. Positioning block; 27. Diode pressure block; 3. Conveying mechanism; 31. Chain block; 311. Rotating rod; 312. Rotating groove; 313. Positioning groove; 32. Power diode component; 321. Pin. 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] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] Combination Figure 1 This utility model discloses a voltage limiting test device for power diodes, comprising a fixing mechanism 1, a pressing mechanism 2 that is lifted and sleeved at the upper end of the fixing mechanism 1, a conveying mechanism 3 that is movably arranged inside the fixing mechanism 1, the fixing mechanism 1 including a snap-fit ​​block 13, two sets of side pressing blocks 14 fixedly arranged on both sides of the upper end of the snap-fit ​​block 13, a centering block 15 fixedly arranged between the two sets of side pressing blocks 14, test points 151 arranged at both ends of the centering block 15, and a sliding groove 152 opened in the center of the centering block 15, the pressing mechanism 2 including a positioning block 26 for pressing the test points 151, and the conveying mechanism 3 including a chain block 31 that is rotatably sleeved with each other, a power diode component 32 placed on the chain block 31, and pins 321 arranged on both sides of the power diode component 32.

[0027] Specifically, the snap-fit ​​block 13 is fixedly set at the lower end, and the two sets of side pressure blocks 14 are pushed inward under the pressure of the pressing mechanism 2 to realize the centering of the power diode 32. The slide groove 152 provides a slide rail for the chain block 31. The chain block 31 moves along the slide groove 152 to realize the continuous testing of the power diode 32. The pins 321 at both ends of the power diode 32 are aligned with the test point 151. Then, the positioning block 26 positions and pressurizes to realize the pressure limit test. Multiple sets of chain blocks 31 are connected to each other by rotation, and the two ends are connected to external sprockets to realize the cyclic conveying.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] Example 1:

[0030] Combination Figures 2-5 The fixing mechanism 1 also includes a snap-fit ​​base plate 11 at the lower end. Support columns 12 are fixedly installed at the four corners of the snap-fit ​​base plate 11, and a pressing mechanism 2 is fixedly installed at the upper end of the support columns 12. The snap-fit ​​base plate 11, support columns 12 and pressing mechanism 2 are fixed to each other to achieve test support.

[0031] Guide posts 131 are fixedly installed at the four corners of the upper end of the snap-fit ​​block 13. Side pressure blocks 14 are installed on both sides, and the outer side of the side pressure blocks 14 is set at an angle 141. The guide posts 131 provide pressure guidance for the pressure-fitting mechanism 2. The angle 141 facilitates the pressure-fitting mechanism 2 to center the power diode 32.

[0032] The crimping mechanism 2 also includes a support plate 21 fixedly installed on the upper end of the support column 12. A cylinder component 22 is fixedly installed at the center of the upper end of the support plate 21. A locking block 23 is sleeved on the lower end of the cylinder component 22. The support plate 21 fixes the cylinder component 22, and the cylinder component 22 drives the locking block 23 to move up and down along the guide column 131.

[0033] The upper end of the locking block 23 is mirrored with an L-shaped block 231, and the lower middle part of the locking block 23 is fixed with a centering pressure block 24. The L-shaped block 231 allows the locking block 23 to be lifted and disassembled. The centering pressure block 24 and the centering block 15 are arranged vertically opposite each other.

[0034] Two sets of rollers 25 are fixedly installed on both sides of the centering pressure block 24. Three sets of diode pressure blocks 27 are arranged side by side in the centering pressure block 24. The lower end of the rollers 25 can roll along the inclined angle 141 to achieve pressing while providing a centering force for the power diode 32. There are three sets of diode pressure blocks 27, corresponding to the multiple sets of power diodes 32 arranged side by side.

[0035] Example 2:

[0036] Combination Figure 6 One side of the chain block 31 is fixedly configured as a rotating rod 311, and the other side is provided with a rotating groove 312. The rotating rods 311 and rotating grooves 312 in the two sets of chain blocks 31 arranged side by side are rotatably connected to each other.

[0037] The upper end of the chain block 31 is provided with a positioning groove 313. The positioning groove 313 works with the positioning block 26 to achieve positioning and insertion, which makes it easy for the diode pressure block 27 to be aligned with the power diode component 32 for fixing.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A voltage limiting test device for power diodes, comprising a fixing mechanism (1), characterized in that: The upper end of the fixing mechanism (1) is fitted with a pressing mechanism (2), and the interior of the fixing mechanism (1) is equipped with a conveying mechanism (3). The fixing mechanism (1) includes a snap-fit ​​block (13), two sets of side pressing blocks (14) are fixedly arranged on both sides of the upper end of the snap-fit ​​block (13), a centering block (15) is fixedly arranged between the two sets of side pressing blocks (14), test points (151) are arranged at both ends of the centering block (15), and a sliding groove (152) is opened in the center of the centering block (15). The pressing mechanism (2) includes a positioning block (26) for pressing the test points (151). The conveying mechanism (3) includes a chain block (31) that rotates and is sleeved with each other. A power diode (32) is placed on the chain block (31), and pins (321) are arranged on both sides of the power diode (32).

2. The voltage limiting test device for power diodes according to claim 1, characterized in that: The fixing mechanism (1) also includes a snap-fit ​​base plate (11) at the lower end, with support columns (12) fixedly installed at the four corners of the snap-fit ​​base plate (11), and a pressing mechanism (2) fixedly installed at the upper end of the support columns (12).

3. The voltage limiting test device for power diodes according to claim 1, characterized in that: The upper corners of the snap-fit ​​block (13) are fixedly provided with guide posts (131), and the side pressure blocks (14) are provided on both sides, with the outer side of the side pressure blocks (14) set at an angle (141).

4. The voltage limiting test device for power diodes according to claim 2, characterized in that: The pressing mechanism (2) further includes a support plate (21) fixedly installed on the upper end of the support column (12). A cylinder component (22) is fixedly installed at the center of the upper end of the support plate (21), and a locking block (23) is sleeved on the lower end of the cylinder component (22).

5. A voltage limiting test device for power diodes according to claim 4, characterized in that: The upper end of the locking block (23) is provided with an L-shaped block (231) mirror image, and the lower end of the locking block (23) is fixed with a centering pressure block (24).

6. A voltage limiting test device for power diodes according to claim 5, characterized in that: Two sets of rollers (25) are fixedly arranged on both sides of the central pressure block (24), and three sets of diode pressure blocks (27) are arranged side by side in the central pressure block (24).

7. The voltage limiting test device for power diodes according to claim 1, characterized in that: One side of the chain block (31) is fixedly configured as a rotating rod (311), and the other side is provided with a rotating groove (312).

8. A voltage limiting test device for power diodes according to claim 1, characterized in that: The upper end of the chain block (31) is provided with a positioning groove (313).

Images