IGBT module ultrasonic welding terminal pushing tool

Abstract

The utility model relates to power electronics manufacturing and testing technical field, concretely relates to a kind of IGBT module ultrasonic welding terminal thrust tooling: including base, bearing mounting block, rotary bearing, rotary mounting platform and four fixed push rod groups, after installing base to thrust machine platform, the IGBT module needing to do thrust is fixed on the top of rotary mounting platform, rotate rotary mounting platform, find the terminal position needing to do thrust after, utilize four fixed push rod groups to fix square fixed plate, make it rotary mounting platform not occur rotation when thrust machine works, run thrust machine, utilize the push cutter on thrust machine to separate terminal and DBC, and thrust machine automatically gathers thrust data, to complete the thrust test of IGBT module ultrasonic welding terminal, using above-mentioned structure, fixed push rod group is stabilized square fixed plate when testing, and then stabilize IGBT module, ensure the accuracy of thrust test, effectively improve the detection level of IGBT module welding quality.

Description

Technical Field

[0001] This utility model relates to the field of power electronics manufacturing and testing technology, and in particular to a thrust tooling for ultrasonic welding terminals of IGBT modules. Background Technology

[0002] In the manufacturing process of power electronic equipment, IGBT (Insulated Gate Bipolar Transistor) modules are core components, and their welding quality directly affects the performance and reliability of the entire device. Precise control of weld strength is particularly important during the ultrasonic welding of IGBT module terminals. However, existing thrust fixtures have significant shortcomings in fixing IGBT modules (especially those with ultrasonically welded terminals), making it impossible to effectively analyze weld strength data.

[0003] Specifically, traditional thrust fixture designs often fail to fully consider the special structure of IGBT modules, making it impossible to stably fix the IGBT modules on the thrust platform, thus making it impossible to perform accurate thrust tests on the terminals. Utility Model Content

[0004] The purpose of this utility model is to provide a thrust fixture for ultrasonic welding terminals of IGBT modules, which solves the problem that traditional thrust fixture designs often do not fully consider the special structure of IGBT modules, making it impossible to stably fix the IGBT modules on the thrust machine platform and thus impossible to perform accurate thrust testing on the terminals.

[0005] To achieve the above objectives, this utility model provides an ultrasonic welding terminal thrust fixture for IGBT modules. The IGBT module ultrasonic welding terminal thrust fixture includes a base, a bearing mounting block, a rotary bearing, a rotary mounting platform, and four fixed push rod assemblies. The base is mounted on a thrust platform. The bearing mounting block is mounted at the center of the upper surface of the base. The rotary bearing is located at the center of the bearing mounting block. The rotary mounting platform is mounted on the rotary bearing. The top of the rotary mounting platform is used to mount the IGBT module to be tested. A square fixing plate is located in the middle of the rotary mounting platform. The upper surface of the base also has four fixed push rod assemblies, which are located around the bearing mounting block. The output end of each fixed push rod assembly corresponds to the side of the square fixing plate.

[0006] The rotating mounting platform includes a rotating shaft and a mounting platform body. One end of the rotating shaft is embedded in the interior of the rotating bearing and extends to the bottom of the rotating bearing. The other end of the rotating shaft is provided with the mounting platform body. The IGBT module to be tested is installed inside the mounting platform body. The square fixing plate is located in the middle of the rotating shaft.

[0007] The bottom end of the rotating shaft is provided with an annular groove, and a retaining ring is provided in the annular groove, which is located below the rotating bearing.

[0008] The bearing mounting block is fixed to the base by four end corners using first internal hex screws.

[0009] Each of the fixed push rod assemblies includes a mounting component, a push rod body, and a clamping plate. The base has four sliding grooves located around the bearing mounting block. The upper surface of the base is also provided with four mounting components, each of which has a push rod body. The output end of each push rod body is provided with a clamping plate. The bottom of each clamping plate is slidably connected to the corresponding sliding groove, and the top of each clamping plate is provided with a clamping protrusion.

[0010] Each of the mounting components is secured to the base by a second hexagonal screw.

[0011] This utility model discloses an ultrasonic welding terminal thrust fixture for IGBT modules, comprising a base, a bearing mounting block, a rotary bearing, a rotary mounting platform, and four fixed push rod assemblies. After the base is installed on the thrust machine platform, the IGBT module to be thrust is fixed on the top of the rotary mounting platform. The rotary mounting platform is moved to locate the terminal to be thrust. The four fixed push rod assemblies then secure the square fixing plate, preventing the rotary mounting platform from rotating during thrust machine operation (to prevent thrust data deviation due to platform rotation). The thrust machine is run, and the pusher blades on the machine separate the terminal from the DBC. The thrust machine automatically collects thrust data, thereby completing the thrust test of the ultrasonic welding terminal of the IGBT module. Using this structure, the fixed push rod assemblies stabilize the square fixing plate during testing, thus stabilizing the IGBT module and ensuring the accuracy of the thrust test, effectively improving the inspection level of IGBT module welding quality. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the ultrasonic welding terminal thrust tooling for IGBT modules provided by this utility model.

[0014] Figure 2This is a schematic diagram showing the disassembled structure of the ultrasonic welding terminal thrust tooling for IGBT modules provided by this utility model.

[0015] 101-Base, 102-Bearing mounting block, 103-Rotary bearing, 104-Square fixing plate, 105-Rotary shaft, 106-Mounting platform body, 107-Annular groove, 108-Snap ring, 109-First internal hex screw, 110-Mounting component, 111-Push rod body, 112-Clamping plate, 113-Slide groove, 114-Clamping protrusion, 115-Second internal hex screw. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 and Figure 2 This utility model provides an ultrasonic welding terminal thrust fixture for IGBT modules. The IGBT module ultrasonic welding terminal thrust fixture includes a base 101, a bearing mounting block 102, a rotary bearing 103, a rotary mounting platform, and four fixed push rod groups. The base 101 is mounted on the thrust machine platform. The bearing mounting block 102 is mounted at the center of the upper surface of the base 101. The rotary bearing 103 is located at the center of the bearing mounting block 102. The rotary mounting platform is mounted on the rotary bearing 103. The top of the rotary mounting platform is used to mount the IGBT module to be tested. A square fixing plate 104 is located in the middle of the rotary mounting platform. The upper surface of the base 101 is also provided with four fixed push rod groups. The four fixed push rod groups are located around the bearing mounting block 102, and the output end of each fixed push rod group corresponds to the side of the square fixing plate 104.

[0018] In this embodiment, after the base 101 is installed on the thrust machine platform, the IGBT module to be thrust is fixed on the top of the rotary mounting platform. After moving the rotary mounting platform to find the terminal position to be thrust, the square fixing plate 104 is fixed by the four fixed push rod groups to prevent the rotary mounting platform from rotating when the thrust machine is working (to prevent the thrust data deviation caused by the rotation of the rotary mounting platform). The thrust machine is run, and the push blade on the thrust machine is used to separate the terminal from the DBC. The thrust machine automatically collects the thrust data, thereby completing the thrust test of the ultrasonic welding terminal of the IGBT module. With the above structure, the square fixing plate 104 is stabilized by the fixed push rod groups during the test, thereby stabilizing the IGBT module, ensuring the accuracy of the thrust test, and effectively improving the detection level of the welding quality of the IGBT module.

[0019] Furthermore, the rotating mounting platform includes a rotating shaft 105 and a mounting platform body 106. One end of the rotating shaft 105 is embedded in the interior of the rotating bearing 103 and extends to the bottom of the rotating bearing 103. The other end of the rotating shaft 105 is provided with the mounting platform body 106. The IGBT module to be tested is installed inside the mounting platform body 106. The square fixing plate 104 is located in the middle of the rotating shaft 105.

[0020] In this embodiment, since the rotating shaft 105 is embedded inside the rotating bearing 103, the rotating shaft 105 can drive the mounting platform body 106 to rotate.

[0021] Furthermore, an annular groove 107 is provided on the outer side of the bottom end of the rotating shaft 105, and a retaining ring 108 is provided in the annular groove 107, the retaining ring 108 being located below the rotating bearing 103.

[0022] In this embodiment, the connection between the rotating shaft 105 and the rotating bearing 103 is made more stable by the arrangement of the annular groove 107 and the snap ring 108.

[0023] Furthermore, the four corners of the bearing mounting block 102 are all fixed to the base 101 by first internal hex screws 109.

[0024] In this embodiment, the bearing mounting block 102 is fixed by setting the first internal hex screw 109.

[0025] Furthermore, each of the fixed push rod assemblies includes a mounting component 110, a push rod body 111, and a clamping plate 112. The base 101 has four sliding grooves 113, which are located around the bearing mounting block 102. The upper surface of the base 101 is also provided with four mounting components 110. Each mounting component 110 is provided with a push rod body 111. The output end of each push rod body 111 is provided with a clamping plate 112. The bottom of each clamping plate 112 is slidably connected to the corresponding sliding groove 113. The top of each clamping plate 112 is provided with a clamping protrusion 114.

[0026] In this embodiment, the push rod body 111 drives the clamping plate 112 to slide in the slide groove 113, and then the clamping protrusion 114 clamps the side of the square fixing plate 104 to complete the fixing of the square fixing plate 104, thus completing the fixing of the entire rotating installation platform.

[0027] Furthermore, each of the mounting components 110 is secured to the base 101 by a second hex socket screw 115.

[0028] In this embodiment, the mounting component 110 is fixed by the second internal hex screw 115.

[0029] 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. A thrust fixture for ultrasonic welding terminals of an IGBT module, characterized in that, The device includes a base, a bearing mounting block, a rotary bearing, a rotary mounting platform, and four fixed push rod assemblies. The base is mounted on a thrust machine platform. The bearing mounting block is installed at the center of the upper surface of the base. The rotary bearing is located at the center of the bearing mounting block. The rotary mounting platform is mounted on the rotary bearing. The top of the rotary mounting platform is used to mount the IGBT module to be tested. A square fixing plate is located in the middle of the rotary mounting platform. The upper surface of the base also has four fixed push rod assemblies, which are located around the bearing mounting block. The output end of each fixed push rod assembly corresponds to the side of the square fixing plate.

2. The ultrasonic welding terminal thrust fixture for IGBT modules as described in claim 1, characterized in that, The rotating mounting platform includes a rotating shaft and a mounting platform body. One end of the rotating shaft is embedded in the interior of the rotating bearing and extends to the bottom of the rotating bearing. The other end of the rotating shaft is provided with the mounting platform body. The IGBT module to be tested is installed inside the mounting platform body. The square fixing plate is located in the middle of the rotating shaft.

3. The ultrasonic welding terminal thrust fixture for IGBT modules as described in claim 2, characterized in that, An annular groove is provided on the outer side of the bottom end of the rotating shaft, and a retaining ring is provided in the annular groove, with the retaining ring located below the rotating bearing.

4. The ultrasonic welding terminal thrust fixture for IGBT modules as described in claim 3, characterized in that, The four corners of the bearing mounting block are all fixed to the base by first internal hex screws.

5. The ultrasonic welding terminal thrust fixture for IGBT modules as described in claim 4, characterized in that, Each of the fixed push rod assemblies includes a mounting component, a push rod body, and a clamping plate. The base has four sliding grooves, which are located around the bearing mounting block. The upper surface of the base is also provided with four mounting components, each of which is equipped with a push rod body. The output end of each push rod body is equipped with a clamping plate. The bottom of each clamping plate is slidably connected to the corresponding sliding groove, and the top of each clamping plate is provided with a clamping protrusion.

6. The ultrasonic welding terminal thrust fixture for IGBT modules as described in claim 5, characterized in that, Each of the aforementioned mounting components is secured to the base by a second hex socket screw.

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