Quick changeover clamp for IGBT tube shell

Abstract

The utility model discloses a kind of IGBT tube shell quick change type clamps, it is related to IGBT technical field, including automatic clamping mechanism, the automatic clamping mechanism includes support plate, the top of support plate is provided with mounting plate, the bottom of mounting plate is fixedly connected with clamping assembly, the clamping assembly includes slide rail, the surface of slide rail is fixedly connected with the bottom of mounting plate.The utility model is provided with the setting of automatic clamping mechanism, using second sliding block moves in the sliding groove of first sliding block, different length tube shell can be adapted, after adjusting, it can be fixed position by tightening lock screw, the reference block dismounting process is saved, overall change type process does not need to disassemble any component, compared with traditional change type efficiency is significantly improved, can flexibly adapt the frequent switching demand of different size IGBT tube shell in small batch multi-species production, meet the quick response requirement of flexible manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of IGBT technology, specifically to a quick-change fixture for IGBT housings. Background Technology

[0002] Traditional IGBT housing fixtures are mainly used in the IGBT module assembly process of the power electronics manufacturing industry to position and fix the IGBT housing, ensuring that subsequent processes such as chip mounting and wire bonding can be carried out accurately, avoiding module functional defects caused by housing misalignment. They are key auxiliary equipment to ensure the production accuracy of IGBT modules and meet the needs of mass assembly.

[0003] However, in small-batch, multi-variety production scenarios that require frequent switching between different sizes of IGBT housings, the positioning pins need to be disassembled and the reference block replaced during the changeover, which cannot adapt to the rapid switching of housings of different lengths. Therefore, a quick changeover fixture for IGBT housings is proposed. Utility Model Content

[0004] This invention provides a quick-change fixture for IGBT housings to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A quick-change fixture for IGBT housings includes an automatic clamping mechanism. The automatic clamping mechanism includes a support plate, a mounting plate on the top of the support plate, and a clamping assembly fixedly connected to the bottom of the mounting plate. The clamping assembly includes a slide rail, the surface of which is fixedly connected to the bottom of the mounting plate, and a first sliding block slidably connected to the inner wall of the slide rail. A synchronous opening mechanism includes a drive disk, the top of which is rotatably connected to the middle of the bottom of the mounting plate. The surface of the drive disk has an arc-shaped groove, and a drive column overlaps the inner wall of the arc-shaped groove.

[0007] A further improvement of the present invention is that the clamping assembly further includes a connecting plate, and a spring is fixedly connected to one side of the first sliding block.

[0008] A further improvement of this utility model is that the end of the spring away from the first sliding block is fixedly connected to the end of the inner cavity of the slide rail, and a sliding groove is provided on the surface of the first sliding block.

[0009] A further improvement of this utility model is that: a second sliding block is overlapped on the inner wall of the sliding groove, and a locking screw is connected to the internal thread of the second sliding block.

[0010] A further improvement of this utility model is that: the lower end of the locking screw is tightly abutted against the bottom of the inner cavity of the sliding groove; a clamping plate is fixedly connected to the top of the second sliding block; a rubber pad is provided on one side of the clamping plate; and four sets of clamping components are provided.

[0011] A further improvement of the present invention is that the synchronous opening mechanism further includes a first synchronous wheel, the interior of which is fixedly connected to the interior of the drive disc via a connecting shaft, a first synchronous belt meshes with the surface of the first synchronous wheel, a second synchronous wheel meshes with the inner wall of the first synchronous belt at the end away from the first synchronous wheel, and a rotating handle is provided inside the second synchronous wheel, the surface of which is rotatably connected to the interior of the mounting plate.

[0012] A further improvement of the present invention is that the synchronous opening mechanism further includes a push rod, one end of which is fixedly connected to one end of the drive column, and the other end of which is fixedly connected to the surface of the connecting plate.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This utility model provides a quick-change fixture for IGBT tube shells. By setting up an automatic clamping mechanism, the second sliding block moves within the sliding groove of the first sliding block to adapt to tube shells of different lengths. After adjustment, tightening the locking screws fixes the position, eliminating the need for disassembling and assembling the reference block. The entire changeover process does not require disassembling any parts, significantly improving efficiency compared to traditional changeover methods. It can flexibly adapt to the frequent switching needs of different sizes of IGBT tube shells in small-batch, multi-variety production, meeting the rapid response requirements of flexible manufacturing. Simultaneously, the synchronous opening mechanism allows the first synchronous wheel and drive plate to rotate synchronously by rotating the handle, which in turn drives the second synchronous wheel and the first synchronous belt to rotate synchronously. The arc-shaped sliding groove on the surface of the drive plate pushes the top rod through the drive column, causing the connecting plates of the four sets of clamping components to drive the first sliding block to slide synchronously along the slide rail, so that multiple clamping plates open synchronously. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the synchronous opening mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the automatic clamping mechanism of this utility model.

[0019] In the diagram: 11. Support plate; 12. Mounting plate; 13. Slide rail; 14. First sliding block; 15. Connecting plate; 16. Spring; 17. Sliding groove; 18. Second sliding block; 19. Locking screw; 110. Clamping plate; 111. Rubber pad; 21. Drive disc; 22. Arc-shaped slide groove; 23. First synchronous pulley; 24. First synchronous belt; 25. Second synchronous pulley; 26. Rotating handle; 27. Drive column; 28. Top rod. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to embodiments:

[0021] Example 1, as Figures 1-4 As shown, this utility model provides a quick-change fixture for IGBT tube shells, including an automatic clamping mechanism. The automatic clamping mechanism includes a support plate 11, a mounting plate 12 is provided on the top of the support plate 11, and a clamping assembly is fixedly connected to the bottom of the mounting plate 12. The clamping assembly includes a slide rail 13, the surface of the slide rail 13 is fixedly connected to the bottom of the mounting plate 12, and a first sliding block 14 is slidably connected to the inner wall of the slide rail 13. The synchronous opening mechanism includes a drive disk 21, the top of the drive disk 21 is rotatably connected to the middle of the bottom of the mounting plate 12, and an arc-shaped groove 22 is opened on the surface of the drive disk 21. A drive column 27 overlaps the inner wall of the arc-shaped groove 22.

[0022] In this embodiment, with the four sets of clamping components in a naturally retracted state, the spacing of the clamping plates 110 is adapted to the smallest IGBT housing. When it is necessary to switch to different sizes of housing, there is no need to disassemble the positioning pins or reference blocks. Loosen the locking screws 19, push the second sliding block 18 to move along the sliding groove 17 on the surface of the first sliding block 14, adjust the position of the clamping plates to adapt to the IGBT housing, and after the adjustment is completed, tighten the locking screws 19. The position of the second sliding block 18 is fixed by the friction between the screws and the sliding groove, ensuring accurate positioning of the housing.

[0023] Example 2, as Figures 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the clamping assembly further includes a connecting plate 15, a spring 16 is fixedly connected to one side of the first sliding block 14, the end of the spring 16 away from the first sliding block 14 is fixedly connected to the end of the inner cavity of the slide rail 13, a sliding groove 17 is opened on the surface of the first sliding block 14, a second sliding block 18 overlaps the inner wall of the sliding groove 17, a locking screw 19 is threadedly connected to the inside of the second sliding block 18, the lower end of the locking screw 19 is tightly abutted against the bottom of the inner cavity of the sliding groove 17, a clamping plate 110 is fixedly connected to the top of the second sliding block 18, a rubber pad 111 is provided on one side of the clamping plate 110, and the clamping assembly is provided in four sets.

[0024] In this embodiment, by rotating the rotating handle 26 of the synchronous opening mechanism: rotating the handle 26 drives the second synchronous wheel 25 fixed inside to rotate, and the second synchronous wheel 25 drives the first synchronous wheel 23 to rotate synchronously through the meshing first synchronous belt 24; the first synchronous wheel 23 is fixed to the drive disk 21 through the connecting shaft, thereby driving the drive disk 21 to rotate stably in the middle of the bottom of the mounting plate 12. When the drive disk 21 rotates, the arc-shaped sliding groove 22 opened on its surface moves synchronously with the disk body. The inner wall of the arc-shaped sliding groove 22 overlaps with the drive column 27, and the drive column 27 moves radially through the trajectory guide of the sliding groove; one end of the drive column 27 is fixed to the top rod 28, and the other end of the top rod 28 is connected to the surface of the connecting plate 15 of the clamping assembly. Therefore, the top rod 28 pushes the connecting plate 15 synchronously with the drive column 27; the connecting plate 15 is fixed to the first sliding block 14, and the first sliding block 14 slides along the inner wall of the slide rail 13, thereby driving the four sets of clamping assemblies to open synchronously.

[0025] Example 3, as Figures 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the synchronous opening mechanism further includes a first synchronous wheel 23, the interior of the first synchronous wheel 23 is fixedly connected to the interior of the drive disc 21 via a connecting shaft, the surface of the first synchronous wheel 23 is engaged with a first synchronous belt 24, the inner wall of the first synchronous belt 24 away from the first synchronous wheel 23 is engaged with a second synchronous wheel 25, the interior of the second synchronous wheel 25 is provided with a rotating handle 26, the surface of the rotating handle 26 is rotatably connected to the interior of the mounting plate 12, the synchronous opening mechanism further includes a push rod 28, one end of the push rod 28 is fixedly connected to one end of the drive column 27, and the other end of the push rod 28 is fixedly connected to the surface of the connecting plate 15.

[0026] In this embodiment, after placing the IGBT shell to be processed in the area enclosed by the four sets of clamping components, the rotating handle 26 is released. Under the action of the spring 16, the first sliding block 14 is pushed back along the slide rail 13 to clamp the IGBT shell to be processed. After the IGBT shell completes the chip mounting, wire bonding and other processes, the rotating handle 26 is rotated again to repeat the synchronous opening action. The clamping plate 110 moves away from the shell, and the processed shell can be removed manually or by a robotic arm. If it is necessary to switch to other sizes of shells, the above adjustment process can be repeated. No parts need to be disassembled throughout the process, which is suitable for small-batch and multi-variety production needs.

[0027] The working principle of this IGBT shell quick-change fixture will be explained in detail below.

[0028] like Figures 1-4As shown, initially, the four clamping components are in a naturally retracted state. The spacing of the clamping plates 110 is adapted to the smallest IGBT housing. When it is necessary to switch to different sized housings, there is no need to disassemble the positioning pins or reference blocks. Loosen the locking screws 19, push the second sliding block 18 to move along the sliding groove 17 on the surface of the first sliding block 14, adjust the position of the clamping plates to adapt to the IGBT housing, and after adjustment, tighten the locking screws 19. The second sliding block 18 is fixed in position by the friction between the screws and the sliding groove, ensuring accurate housing positioning. Then, rotate the rotating handle 26 of the synchronous opening mechanism: rotating the handle 26 drives the second synchronous wheel 25 fixed inside to rotate. The second synchronous wheel 25 is driven by the meshing first synchronous belt 24, which drives the first synchronous wheel 23 to rotate synchronously. The first synchronous wheel 23 is fixed to the drive disk 21 through the connecting shaft, thereby driving the drive disk 21 to rotate stably in the middle of the bottom of the mounting plate 12. When the drive disk 21 rotates, the arc-shaped sliding groove 22 on its surface moves synchronously with the disk body. The inner wall overlaps with the drive column 27, and the drive column 27 moves radially driven by the track of the slide groove; one end of the drive column 27 is fixed to the push rod 28, and the other end of the push rod 28 is connected to the surface of the connecting plate 15 of the clamping assembly, so the push rod 28 pushes the connecting plate 15 synchronously with the drive column 27; the connecting plate 15 is fixed to the first sliding block 14, and the first sliding block 14 slides along the inner wall of the slide rail 13, thereby driving the four sets of clamping assemblies to open synchronously, and then the IGBT shell to be processed is placed in the area surrounded by the four sets of clamping assemblies. Afterward, release the rotating handle 26. Under the action of the spring 16, push the first sliding block 14 back along the slide rail 13 to clamp the IGBT shell to be processed. After the IGBT shell completes the chip mounting, wire bonding and other processes, rotate the rotating handle 26 again to repeat the synchronous opening action. The clamping plate 110 moves away from the shell, and the processed shell can be removed manually or by a robotic arm. If it is necessary to switch to other sizes of shells, the above adjustment process can be repeated. No parts need to be disassembled throughout the process, which is suitable for small batch and multi-variety production needs.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A quick-change fixture for IGBT tube shells, characterized in that: include An automatic clamping mechanism includes a support plate (11), a mounting plate (12) is provided on the top of the support plate (11), a clamping assembly is fixedly connected to the bottom of the mounting plate (12), the clamping assembly includes a slide rail (13), the surface of the slide rail (13) is fixedly connected to the bottom of the mounting plate (12), and a first sliding block (14) is slidably connected to the inner wall of the slide rail (13). The synchronous opening mechanism includes a drive disk (21), the top of which is rotatably connected to the middle of the bottom of the mounting plate (12), and an arc-shaped groove (22) is provided on the surface of the drive disk (21), with a drive column (27) overlapping the inner wall of the arc-shaped groove (22).

2. The IGBT tube shell quick-change fixture according to claim 1, characterized in that: The clamping assembly also includes a connecting plate (15), and a spring (16) is fixedly connected to one side of the first sliding block (14).

3. A quick-change fixture for IGBT tube shells according to claim 2, characterized in that: The end of the spring (16) away from the first sliding block (14) is fixedly connected to the end of the inner cavity of the slide rail (13), and a sliding groove (17) is provided on the surface of the first sliding block (14).

4. A quick-change fixture for IGBT tube shells according to claim 3, characterized in that: The inner wall of the sliding groove (17) is connected to a second sliding block (18), and the inner thread of the second sliding block (18) is connected to a locking screw (19).

5. A quick-change fixture for IGBT tube shells according to claim 4, characterized in that: The lower end of the locking screw (19) is tightly abutted against the bottom of the inner cavity of the sliding groove (17). The top of the second sliding block (18) is fixedly connected to a clamping plate (110). A rubber pad (111) is provided on one side of the clamping plate (110). The clamping assembly is provided in four sets.

6. A quick-change fixture for IGBT tube shells according to claim 1, characterized in that: The synchronous opening mechanism also includes a first synchronous wheel (23), the interior of which is fixedly connected to the interior of the drive disc (21) via a connecting shaft. A first synchronous belt (24) is engaged on the surface of the first synchronous wheel (23). A second synchronous wheel (25) is engaged on the inner wall of the end of the first synchronous belt (24) away from the first synchronous wheel (23). A rotating handle (26) is provided inside the second synchronous wheel (25), and the surface of the rotating handle (26) is rotatably connected to the interior of the mounting plate (12).

7. The IGBT housing quick-change fixture according to claim 6, characterized in that: The synchronous opening mechanism also includes a push rod (28), one end of which is fixedly connected to one end of the drive column (27), and the other end of which is fixedly connected to the surface of the connecting plate (15).

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