Power-on test crimping device

Abstract

The utility model discloses a power-on test crimping device comprising a crimping test bench, the crimping test bench is provided with a crimping motion platform capable of translating back and forth, the crimping motion platform is used for installing a terminal connection module, the front side of the terminal connection module is provided with an upper terminal and a lower terminal, and the upper terminal and the lower terminal are connected with the crimping motion platform. An upper clamping rod and a lower clamping rod are arranged on the front side of the terminal connecting module, the upper clamping rod and the lower clamping rod are parallel to each other and extend transversely, the upper clamping rod is located above the upper terminal, the lower clamping rod is located below the lower terminal, and the upper clamping rod and the lower clamping rod are connected with the terminal connecting module. The crimping motion platform is provided with a clamping rod driving mechanism used for driving the upper clamping rod and the lower clamping rod to move relatively, and the terminal of the IGBT device is clamped between the upper terminal and the lower terminal by means of clamping force applied by the upper clamping rod and the lower clamping rod. According to the utility model, the connection reliability between the terminals can be improved, and larger current can be borne.

Description

Technical Field

[0001] This utility model relates to IGBT testing equipment, and more particularly to a power-on testing crimping device. Background Technology

[0002] Testing of IGBT devices includes functional testing, which requires electrical connection between the IGBT device and a pre-set test module. Specifically, this involves connecting the terminals of the IGBT device to the terminals of the test module. Existing terminal connection methods include soldering, stud connection, etc., which can damage the terminals and are not suitable for use in the testing process. Therefore, a crimping method is generally used. Specifically, the terminals of the IGBT device and the terminals of the test module are first aligned and stacked, and then the terminals are pressed together using a pre-set crimping mechanism. Although this method can achieve electrical connection, the contact area between the terminals of the IGBT device and the terminals of the test module is small, resulting in poor connection reliability. Furthermore, the current value that the terminal connection can withstand is limited, which cannot meet the testing requirements of power devices. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a power-on test crimping device that can improve the reliability of the connection between terminals and withstand a larger current, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A power-on testing crimping device includes a crimping test platform with a crimping motion platform that can move back and forth. A terminal connection module is mounted on the crimping motion platform. An upper terminal and a lower terminal are located on the front side of the terminal connection module. When the crimping motion platform moves towards the IGBT device under test, the terminal of the IGBT device is positioned between the upper and lower terminals. An upper clamping rod and a lower clamping rod are located on the front side of the terminal connection module. The upper and lower clamping rods are parallel to each other and extend laterally. The upper clamping rod is located above the upper terminal, and the lower clamping rod is located below the lower terminal. The crimping motion platform is equipped with a clamping rod driving mechanism for driving the upper and lower clamping rods to move relative to each other. The clamping force applied by the upper and lower clamping rods clamps the terminal of the IGBT device between the upper and lower terminals.

[0006] Preferably, the pressing test platform is provided with two parallel slide rails, and the pressing motion platform is slidably connected to the two slide rails.

[0007] Preferably, the bottom of the pressing test bench is provided with a front-to-back translation drive cylinder, and the telescopic rod of the front-to-back translation drive cylinder is in transmission cooperation with the pressing motion platform, so that the pressing motion platform is driven to translate back and forth by the front-to-back translation drive cylinder.

[0008] Preferably, the upper clamping rod has an upper soft rubber pad on the side facing the upper terminal, and the lower clamping rod has a lower soft rubber pad on the side facing the lower terminal.

[0009] Preferably, the clamping rod driving mechanism includes two clamping rod driving cylinders, two clamping rod supports, two V-shaped upper clamping rod swing arms, and two V-shaped lower clamping rod swing arms. The two clamping rod supports are respectively fixed to the pressing motion platform on both sides of the terminal connection module. The two clamping rod driving cylinders are respectively fixed to the rear ends of the two clamping rod supports. The bent ends of the two upper clamping rod swing arms are rotatably connected to the two clamping rod supports. The upper clamping rod is fixed between the front ends of the two upper clamping rod swing arms. The bent ends of the two lower clamping rod swing arms are rotatably connected to the two clamping rod supports. The lower clamping rod is fixed between the front ends of the two lower clamping rod swing arms. The moving end of the clamping rod driving cylinder is hinged with an upper connecting rod and a lower connecting rod. The front end of the upper connecting rod is hinged to the rear end of the upper clamping rod swing arm, and the front end of the lower connecting rod is hinged to the rear end of the lower clamping rod swing arm.

[0010] Preferably, the clamping rod support has an opening for receiving, and the upper clamping rod swing arm and the upper connecting rod are both located within the opening.

[0011] Preferably, the receiving opening extends to the front end of the clamping rod support.

[0012] In the power-on testing crimping device disclosed in this utility model, the IGBT device to be tested is mounted on a preset fixture. When the IGBT device is in the testing position, the terminals of the IGBT device are aligned with the gap between the upper and lower terminals. Then, the crimping motion platform drives the terminal connection module to move horizontally, so that the terminals of the IGBT device enter between the upper and lower terminals. Subsequently, the clamping rod driving mechanism drives the upper and lower clamping rods to move relative to each other. During the clamping force applied by the upper and lower clamping rods, the terminals of the IGBT device are clamped between the upper and lower terminals. Compared with the prior art, in this utility model, the upper and lower terminals are simultaneously attached to the upper and lower sides of the terminal, making the contact area between the IGBT device and the test module terminal larger. This not only improves the connection reliability between the terminals but also allows it to withstand larger currents, thus better meeting application requirements. Attached Figure Description

[0013] Figure 1 A structural diagram for testing the crimping device;

[0014] Figure 2 A side view of the test crimping device;

[0015] Figure 3 for Figure 2 Enlarged view of section A. Detailed Implementation

[0016] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0017] This utility model discloses an electrical testing crimping device, combined with... Figures 1 to 3 As shown, it includes a crimping test bench 20, on which a crimping motion platform 21 capable of translating back and forth is provided. A terminal connection module 2 is mounted on the crimping motion platform 21. The front side of the terminal connection module 2 is provided with an upper terminal 200 and a lower terminal 201. When the crimping motion platform 21 moves towards the IGBT device 100 under test, the terminal 101 of the IGBT device 100 is brought between the upper terminal 200 and the lower terminal 201. The front side of the terminal connection module 2 is provided with an upper clamping rod 22 and a lower clamping rod 23. The clamping rod 23, the upper clamping rod 22 and the lower clamping rod 23 are parallel to each other and both extend laterally. The upper clamping rod 22 is located above the upper terminal 200 and the lower clamping rod 23 is located below the lower terminal 201. The pressing motion platform 21 is provided with a clamping rod driving mechanism for driving the upper clamping rod 22 and the lower clamping rod 23 to move relative to each other. The clamping force applied by the upper clamping rod 22 and the lower clamping rod 23 clamps the terminal 101 of the IGBT device 100 between the upper terminal 200 and the lower terminal 201.

[0018] In the above structure, the IGBT device 100 to be tested is mounted on a preset fixture. When the IGBT device 100 is in the test position, the terminals 101 of the IGBT device 100 are aligned with the gap between the upper terminal 200 and the lower terminal 201. Then, the pressing motion platform 21 drives the terminal connection module 2 to translate, so that the terminals 101 of the IGBT device 100 enter between the upper terminal 200 and the lower terminal 201. Then, the clamping rod driving mechanism drives the upper clamping rod 22 and the lower clamping rod 22 to move together. As the rods 23 move relative to each other, the clamping force applied by the upper clamping rod 22 and the lower clamping rod 23 clamps the terminal 101 of the IGBT device 100 between the upper terminal 200 and the lower terminal 201. Compared with the prior art, in this invention, the upper terminal 200 and the lower terminal 201 are simultaneously attached to the upper and lower sides of the terminal 101, which makes the contact area between the IGBT device and the test module terminal larger. This not only improves the connection reliability between the terminals, but also allows it to withstand a larger current, thus better meeting the application requirements.

[0019] In this embodiment, the crimping test platform 20 adopts a sliding translation method. Specifically, the crimping test platform 20 is provided with two parallel slide rails 24, and the crimping motion platform 21 is slidably connected to the two slide rails 24.

[0020] Regarding the translational driving method of the crimping test bench 20, a linear module or a linear cylinder can be used for driving. In this embodiment, a cylinder is preferred to provide the translational driving force. Specifically, the bottom of the crimping test bench 20 is equipped with a front-to-back translational driving cylinder 25. The telescopic rod of the front-to-back translational driving cylinder 25 is in transmission cooperation with the crimping motion platform 21, thereby driving the crimping motion platform 21 to translate back and forth. In practical applications, to ensure that the front-to-back translational driving cylinder 25 has sufficient driving stroke, a pen-shaped cylinder is preferably used.

[0021] As a preferred embodiment, the upper clamping rod 22 is provided with an upper soft rubber pad 220 on the side facing the upper terminal 200, and the lower clamping rod 23 is provided with a lower soft rubber pad 230 on the side facing the lower terminal 201. The upper soft rubber pad 220 and the lower soft rubber pad 230 are used for direct contact with the terminal. The soft rubber pads prevent scratches on the terminal surface and also provide elastic cushioning.

[0022] In this embodiment, the clamping rod driving mechanism includes two clamping rod driving cylinders 260, two clamping rod supports 261, two V-shaped upper clamping rod swing arms 262, and two V-shaped lower clamping rod swing arms 263. The two clamping rod supports 261 are respectively fixed to the pressing motion platform 21 on both sides of the terminal connection module 2. The two clamping rod driving cylinders 260 are respectively fixed to the rear ends of the two clamping rod supports 261. The bent parts of the two upper clamping rod swing arms 262 are rotatably connected to the two clamping rod supports 261. The upper clamping rod 22 is fixed between the front ends of the two upper clamping rod swing arms 262. The bent parts of the two lower clamping rod swing arms 263 are rotatably connected to the two clamping rod supports 261 respectively. The lower clamping rod 23 is fixed between the front ends of the two lower clamping rod swing arms 263. The moving end of the clamping rod drive cylinder 260 is hinged with an upper connecting rod 264 and a lower connecting rod 265. The front end of the upper connecting rod 264 is hinged to the rear end of the upper clamping rod swing arm 262, and the front end of the lower connecting rod 265 is hinged to the rear end of the lower clamping rod swing arm 263.

[0023] In the above structure, when the clamping rod drive cylinder 260 moves forward, the upper connecting rod 264 and the lower connecting rod 265 push the rear ends of the upper clamping rod swing arm 262 and the lower clamping rod swing arm 263 forward. Based on the rotational connection between the bent part of the upper clamping rod swing arm 262 and the clamping rod support 261, the front ends of the upper clamping rod swing arm 262 and the front ends of the lower clamping rod swing arm 263 are driven to move closer together, thereby forming a clamping force on the upper terminal 200 and the lower terminal 201, ensuring that the upper terminal 200 and the lower terminal 201 are in reliable contact with the terminal 101 of the IGBT device 100.

[0024] In this embodiment, the upper clamping arm 262 and the upper connecting rod 264 are preferably housed inside the clamping rod support 261. Specifically, the clamping rod support 261 has a receiving opening 266, and both the upper clamping arm 262 and the upper connecting rod 264 are disposed within the receiving opening 266. Further, the receiving opening 266 extends to the front end of the clamping rod support 261.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A power-on testing crimping device, characterized in that, The device includes a crimping test stand with a crimping motion platform that can move back and forth. A terminal connection module is mounted on the crimping motion platform. The front of the terminal connection module has an upper terminal and a lower terminal. When the crimping motion platform moves towards the IGBT device under test, the terminal of the IGBT device is positioned between the upper and lower terminals. The front of the terminal connection module has an upper clamping rod and a lower clamping rod, which are parallel to each other and extend laterally. The upper clamping rod is located above the upper terminal, and the lower clamping rod is located below the lower terminal. The crimping motion platform has a clamping rod driving mechanism for driving the upper and lower clamping rods to move relative to each other. The clamping force applied by the upper and lower clamping rods clamps the terminal of the IGBT device between the upper and lower terminals.

2. The power-on testing crimping device as described in claim 1, characterized in that, The crimping test bench is equipped with two parallel slide rails, and the crimping motion platform is slidably connected to the two slide rails.

3. The power-on testing crimping device as described in claim 2, characterized in that, The bottom of the pressing test bench is equipped with a front-to-back translation drive cylinder. The telescopic rod of the front-to-back translation drive cylinder is in transmission cooperation with the pressing motion platform, and the pressing motion platform is driven to move back and forth by the front-to-back translation drive cylinder.

4. The power-on testing crimping device as described in claim 1, characterized in that, The upper clamping rod has an upper soft rubber pad on the side facing the upper terminal, and the lower clamping rod has a lower soft rubber pad on the side facing the lower terminal.

5. The power-on testing crimping device as described in claim 1, characterized in that, The clamping rod driving mechanism includes two clamping rod driving cylinders, two clamping rod supports, two "V"-shaped upper clamping rod swing arms, and two "V"-shaped lower clamping rod swing arms. The two clamping rod supports are respectively fixed to the pressing motion platform on both sides of the terminal connection module. The two clamping rod driving cylinders are respectively fixed to the rear ends of the two clamping rod supports. The bent parts of the two upper clamping rod swing arms are rotatably connected to the two clamping rod supports. The upper clamping rod is fixed between the front ends of the two upper clamping rod swing arms. The bent parts of the two lower clamping rod swing arms are rotatably connected to the two clamping rod supports. The lower clamping rod is fixed between the front ends of the two lower clamping rod swing arms. The moving end of the clamping rod driving cylinder is hinged with an upper connecting rod and a lower connecting rod. The front end of the upper connecting rod is hinged to the rear end of the upper clamping rod swing arm, and the front end of the lower connecting rod is hinged to the rear end of the lower clamping rod swing arm.

6. The power-on testing crimping device as described in claim 5, characterized in that, The clamping rod support has an opening for receiving, and the upper clamping rod swing arm and the upper connecting rod are both located in the opening.

7. The power-on testing crimping device as described in claim 6, characterized in that, The receiving opening extends to the front end of the clamp support.

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