An ultrasonic welding tool for IGBT module terminals

Abstract

This utility model relates to the field of ultrasonic welding fixture technology, specifically to an ultrasonic welding fixture for IGBT module terminals. It includes a base, a fixed mounting plate, and four slider assemblies. Each slider assembly is equipped with a spring and a pressure block. In use, the ultrasonic welding fixture is first laid flat on a table. Then, the IGBT module to be welded is precisely positioned using multiple locating pins on the fixed mounting plate. Next, the four slider assemblies on both sides of the fixed mounting plate are slid inwards, automatically clamping the IGBT module using the springs and pressure blocks on the slider assemblies, eliminating the need for cumbersome nut tightening. After welding, the IGBT module can be easily removed by simply sliding the slider assemblies outwards. This fixture significantly simplifies the welding process, reduces manual operation time, and significantly improves production efficiency, making it particularly suitable for large-scale ultrasonic welding operations of IGBT module terminals.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic welding fixture technology, and in particular to an ultrasonic welding fixture for IGBT module terminals. Background Technology

[0002] In the existing technology, the welding process of IGBT module terminals usually requires first fixing the IGBT module (at which point the terminals have not yet been welded) to the welding fixture with nuts or other fasteners, and then using ultrasonic welding equipment to weld the terminals of the IGBT module.

[0003] However, traditional ultrasonic welding fixtures require the nuts to be loosened after welding to remove the welded IGBT module from the fixture, a time-consuming step that significantly impacts production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an ultrasonic welding fixture for IGBT module terminals, which solves the problem that traditional ultrasonic welding fixtures require the nuts to be loosened after welding to remove the welded IGBT module from the fixture. This step is time-consuming and seriously affects production efficiency.

[0005] To achieve the above objectives, this utility model provides an ultrasonic welding fixture for IGBT module terminals. The ultrasonic welding fixture for IGBT module terminals includes a base, a fixed mounting plate, and four slider groups. The upper surface of the base is mounted on the fixed mounting plate. Two slider groups are mounted on each of the two lateral sides of the fixed mounting plate. The upper surface of the fixed mounting plate is provided with multiple positioning pins.

[0006] Each slider assembly includes a pressure block, a fixing screw, a spring, and a washer. Each pressure block is provided with a groove. The fixing screw passes through the groove of the corresponding pressure block and is installed at the end corner of the fixed mounting plate. Each groove is provided with a placement slot above it. The spring is installed inside the placement slot. The spring is located outside the corresponding fixing screw. The washer is provided at the top of the spring and is located below the nut of the fixing screw.

[0007] The base has a mounting boss on its upper surface, and the bottom of the mounting plate is fitted onto the mounting boss. The mounting plate is fixed to the mounting boss by four first hexagon socket screws.

[0008] Both ends of the mounting plate are fixed with operating handles by second internal hex screws.

[0009] The upper surface of the mounting plate is provided with a mounting groove, and a scratch-resistant buffer plate is fixedly installed inside the mounting groove by four third hexagon socket screws.

[0010] This utility model discloses an ultrasonic welding fixture for IGBT module terminals, comprising a base, a fixed mounting plate, and four slider assemblies. Each slider assembly is equipped with a spring and a pressure block. In use, the ultrasonic welding fixture is first laid flat on a table. Then, the IGBT module to be welded is precisely positioned using multiple positioning pins on the fixed mounting plate. Next, the four slider assemblies on both sides of the fixed mounting plate are slid inwards, and the springs and pressure blocks on the slider assemblies automatically clamp the IGBT module, eliminating the need for cumbersome nut tightening. After welding, the IGBT module can be easily removed by simply sliding the slider assemblies outwards. This fixture greatly simplifies the welding process, reduces manual operation time, and significantly improves production efficiency, making it particularly suitable for large-scale ultrasonic welding operations of IGBT module terminals. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the ultrasonic welding fixture for IGBT module terminals provided by this utility model.

[0013] Figure 2 This is a schematic diagram showing the disassembled structure of the ultrasonic welding fixture for IGBT module terminals provided by this utility model.

[0014] Figure 3 This is a top view of the slider assembly provided by this utility model.

[0015] Figure 4 This utility model provides Figure 3 A schematic diagram of the cross-sectional structure of line AA.

[0016] Figure 5 This is a schematic diagram of the disassembled structure of the slider assembly provided by this utility model.

[0017] 101-Base, 102-Fixed mounting plate, 103-Positioning pin, 104-Pressure block, 105-Fixing screw, 106-Spring, 107-Washer, 108-Slide groove, 109-Placement groove, 110-Mounting boss, 111-First hex socket screw, 112-Second hex socket screw, 113-Operating handle, 114-Mounting groove, 115-Third hex socket screw, 116-Scratch-resistant buffer plate. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] Please see Figures 1 to 5 This utility model provides an ultrasonic welding fixture for IGBT module terminals. The ultrasonic welding fixture for IGBT module terminals includes a base 101, a fixed mounting plate 102 and four slider groups. The upper surface of the base 101 is mounted on the fixed mounting plate 102. Two slider groups are mounted on each of the two lateral sides of the fixed mounting plate 102. A plurality of positioning pins 103 are provided on the upper surface of the fixed mounting plate 102.

[0020] Each slider assembly includes a pressure block 104, a fixing screw 105 (thread not shown in the figure), a spring 106, and a washer 107. Each pressure block 104 is provided with a groove 108. The fixing screw 105 passes through the groove 108 of the corresponding pressure block 104 and is installed at the end corner of the fixed mounting plate 102. Each groove 108 is provided with a placement groove 109 above it. The spring 106 is installed inside the placement groove 109. The spring 106 is located outside the corresponding fixing screw 105. The washer 107 is provided at the top of the spring 106 and is located below the nut of the fixing screw 105.

[0021] In this embodiment, the ultrasonic welding fixture is first laid flat on a table. Then, the IGBT module to be welded is precisely positioned using the multiple positioning pins 103 on the mounting plate 102. Next, the four slider groups on both sides of the mounting plate 102 are slid inwards. The IGBT module is automatically clamped by the springs 106 and the pressure blocks 104 on the slider groups, eliminating the need for cumbersome nut tightening operations. After welding, the IGBT module can be easily removed by simply sliding the slider groups outwards. This fixture greatly simplifies the welding process, reduces manual operation time, and significantly improves production efficiency. It is particularly suitable for large-scale ultrasonic welding operations of IGBT module terminals.

[0022] Furthermore, the upper surface of the base 101 is provided with a mounting boss 110, the bottom of the fixed mounting plate 102 is fitted above the mounting boss 110, and the fixed mounting plate 102 is fixed to the mounting boss 110 by four first hexagon socket screws 111.

[0023] In this embodiment, the mounting boss 110 is used to position the mounting plate 102, which facilitates the subsequent installation of the mounting plate 102 using the first hex socket screw 111.

[0024] Furthermore, both ends of the fixed mounting plate 102 are fixed with operating handles 113 by second internal hex screws 112.

[0025] In this embodiment, the operation handle 113 facilitates the transfer of the entire welding fixture.

[0026] Furthermore, the upper surface of the fixed mounting plate 102 is provided with a mounting groove 114, and a scratch-resistant buffer plate 116 is fixedly installed inside the mounting groove 114 by four third hexagon socket screws 115.

[0027] In this embodiment, the scratch-resistant buffer plate 116 is a flexible plastic plate, which ensures that there is no gap between the copper base plate (which has a curvature) and the fixed mounting plate 102 during IGBT module installation (after installation, the scratch-resistant buffer plate 116, being a flexible plastic plate, can deform and completely fit onto the copper base plate), thereby reducing the probability of cold solder joints during ultrasonic soldering.

[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An ultrasonic welding fixture for IGBT module terminals, characterized in that, It includes a base, a fixed mounting plate, and four slider assemblies. The upper surface of the base is mounted on the fixed mounting plate. Two slider assemblies are mounted on each of the two lateral sides of the fixed mounting plate. The upper surface of the fixed mounting plate is provided with multiple positioning pins. Each slider assembly includes a pressure block, a fixing screw, a spring, and a washer. Each pressure block is provided with a groove. The fixing screw passes through the groove of the corresponding pressure block and is installed at the end corner of the fixed mounting plate. Each groove is provided with a placement slot above it. The spring is installed inside the placement slot. The spring is located outside the corresponding fixing screw. The washer is provided at the top of the spring and is located below the nut of the fixing screw.

2. The ultrasonic welding fixture for IGBT module terminals as described in claim 1, characterized in that, The upper surface of the base is provided with a mounting boss, and the bottom of the fixed mounting plate is fitted into the mounting boss. The fixed mounting plate is fixed to the mounting boss by four first hexagon socket screws.

3. The ultrasonic welding fixture for IGBT module terminals as described in claim 2, characterized in that, Both ends of the mounting plate are secured with operating handles using second internal hex screws.

4. The ultrasonic welding fixture for IGBT module terminals as described in claim 3, characterized in that, The upper surface of the mounting plate is provided with a mounting groove, and a scratch-resistant buffer plate is fixedly installed inside the mounting groove by four third hexagon socket screws.

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