IGBT module rivet inspection tool

Abstract

The utility model relates to IGBT module production inspection technical field, concretely relates to a rivet inspection frock of IGBT module, the utility model discloses through the accurate cooperation of pressing plate, down -pressing mechanism, load tray, multiple elevating mechanisms, two jacking mounting blocks and base, has realized the automatic inspection to the rivet on IGBT module, when inspecting, places the IGBT module after riveting on load tray, starts down -pressing mechanism, and the pressing plate continues to press down after pressing down contact module surface, through the contact of jacking pin and rivet and the compression of jacking spring, and the rivet of not matching will be pushed out because of the lack of riveting force, thereby avoids the unqualified product to flow into the client, has improved production quality and efficiency significantly, has reduced the labor intensity of staff, has prevented the quality complaint, order cancellation and the serious consequence such as compensation effectively.

Description

Technical Field

[0001] This utility model relates to the field of IGBT module production and inspection technology, and in particular to an IGBT module rivet inspection fixture. Background Technology

[0002] In current industrial production, IGBT modules, as core components of power electronic devices, are crucial to the stable operation of the entire system due to their quality and reliability. During the assembly process of IGBT modules, rivets, as key components connecting various parts, directly affect the overall performance and service life of the module due to their compatibility and fastening force. Existing IGBT module production technologies have developed a series of efficient assembly and testing methods, which have improved production efficiency and ensured product quality to a certain extent, making significant contributions to the development of the power electronics industry.

[0003] However, in actual production, there are still some technical problems that urgently need to be solved. Among them, due to the wide variety of rivets, sizes and specifications, if incompatible rivets are accidentally mixed in during incoming materials and used in IGBT modules in subsequent production, it will lead to serious quality problems. At present, although there is a manual inspection process, manual inspection is subject to the risk of missed inspections and false inspections. Once unqualified products reach the customer, it will lead to serious consequences such as quality complaints, order cancellations and even compensation, causing significant economic losses to the company. Utility Model Content

[0004] The purpose of this utility model is to provide an IGBT module rivet inspection fixture, aiming to solve some technical problems that still need to be addressed in the actual production process. Specifically, due to the wide variety of rivet types, sizes, and specifications, if incompatible rivets are inadvertently mixed in during incoming materials and subsequently used in IGBT modules, it will lead to serious quality problems. Currently, although there is a manual inspection process, manual inspection carries the risk of missed or incorrect inspections. Once defective products reach the customer, it will trigger serious consequences such as quality complaints, order cancellations, and even compensation, causing significant economic losses to the enterprise.

[0005] To achieve the above objectives, this utility model employs an IGBT module rivet inspection fixture, comprising a pressure plate, a pressing mechanism, a carrier plate, multiple lifting mechanisms, two lifting mounting blocks, and a base. The carrier plate has multiple IGBT module placement slots, and each IGBT module placement slot has a rivet inspection slot at each of its four bottom corners. Each lifting mounting block has multiple lifting slots, and each lifting slot has a slidably disposed lifting pin. A lifting spring is disposed between the lifting pin and the lifting slot. The pressure plate is bolted to the moving end of the pressing mechanism, and the pressing mechanism is bolted to one side of the base. The carrier plate is disposed on the base via multiple lifting mechanisms. The two lifting mounting blocks are respectively bolted to the base, and the carrier plate is located between the pressure plate and the two lifting mounting blocks. Each lifting pin is located in a corresponding rivet inspection slot.

[0006] The pressure plate has multiple through holes adapted to IGBT modules, and each through hole is aligned with the corresponding IGBT module placement slot.

[0007] The pressing mechanism includes a pressing cylinder and a mounting bracket. The pressing cylinder is bolted to the mounting bracket, and the pressure plate is bolted to the output end of the pressing cylinder. The mounting bracket is bolted to one side of the base.

[0008] The lifting mechanism includes a lifting spring and a fixing rod. The fixing rod is provided with a limit ring. The outer edge of the carrier plate has multiple limit grooves. The lifting spring is sleeved on the fixing rod. The fixing rod is fixedly connected to the base and located on the base. The fixing rod also passes through the corresponding limit groove. The lifting spring abuts between the carrier plate and the base. The limit ring is located in the corresponding limit groove.

[0009] The IGBT module rivet inspection fixture also includes multiple linear bearings and a manual solenoid valve. The multiple linear bearings are symmetrically arranged in pairs between the carrier and the base, and the manual solenoid valve is located at one end of the base.

[0010] This utility model discloses an IGBT module rivet inspection fixture. Through the precise coordination of the pressure plate, the pressing mechanism, the carrier plate, multiple lifting mechanisms, two lifting mounting blocks, and the base, it achieves automatic inspection of rivets on IGBT modules. During inspection, the riveted IGBT module is placed on the carrier plate, and the pressing mechanism is activated. The pressure plate presses down to contact the module surface and continues to press down. Through the contact between the lifting pin and the rivet, and the compression of the lifting spring, mismatched rivets are ejected due to insufficient riveting force. This prevents defective products from reaching the customer, significantly improves production quality and efficiency, reduces the labor intensity of employees, and effectively prevents serious consequences such as quality complaints, order cancellations, and compensation claims. 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 three-dimensional perspective view of the IGBT module rivet inspection fixture of this utility model.

[0013] Figure 2 This is a structural schematic diagram of the IGBT module rivet inspection fixture under inspection conditions according to this utility model.

[0014] Figure 3 This is a disassembled schematic diagram of the IGBT module rivet inspection fixture of this utility model.

[0015] In the diagram: 1-Cylinder, 2-Mounting bracket, 3-Pressure plate, 4-Lifting spring, 5-Linear bearing, 6-Carrier plate, 7-Lifting mounting block, 8-Lifting pin, 9-Lifting spring, 10-Manual solenoid valve, 11-Base, 12-Mismatched rivet pushed out by the lifting pin, 13-Matching rivet not pushed out by the lifting pin, 14-IGBT module after pressing and riveting. 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 Figures 1 to 3This utility model provides an IGBT module rivet inspection fixture, including a pressure plate 3, a pressing mechanism, a carrier plate 6, multiple lifting mechanisms, two lifting mounting blocks 7, and a base 11. The carrier plate 6 has multiple IGBT module placement slots, and each IGBT module placement slot has a rivet inspection slot at each of its four bottom corners. Each lifting mounting block 7 has multiple lifting slots, and each lifting slot has a sliding lifting pin 8. A lifting spring 9 is provided between the lifting pin 8 and the lifting slot. The pressure plate 3 is bolted to the moving end of the pressing mechanism, and the pressing mechanism is bolted to one side of the base 11. The carrier plate 6 is mounted on the base 11 via multiple lifting mechanisms. The two lifting mounting blocks 7 are bolted to the base 11, and the carrier plate 6 is located between the pressure plate 3 and the two lifting mounting blocks 7. Each lifting pin 8 is located in a corresponding rivet inspection slot.

[0018] In this embodiment, the pressure plate 3, the pressing mechanism, the carrier plate 6 (equipped with an IGBT module placement slot and a rivet inspection slot), the lifting mounting block 7 (containing a lifting slot and a sliding lifting pin 8, and equipped with a lifting spring 9), and the base 11, among other core components, achieve automated and precise inspection of IGBT module rivets. This design effectively avoids mismatch problems caused by mixed rivets, prevents defective products from flowing into the customer's market, thereby significantly improving production quality, reducing the risk of quality complaints, order cancellations, and compensation, and bringing significant economic benefits to the enterprise.

[0019] Furthermore, the pressure plate 3 has multiple through holes adapted to the IGBT module, and each through hole is aligned with the corresponding IGBT module placement slot.

[0020] In this embodiment, the multiple through holes on the pressure plate 3 that are aligned with the IGBT module placement slot ensure that the pressure plate 3 can accurately align with the IGBT module during the pressing process, thus avoiding inspection errors caused by positional offset.

[0021] Furthermore, the pressing mechanism includes a pressing cylinder 1 and a mounting bracket 2. The pressing cylinder 1 is bolted to the mounting bracket 2, and the pressure plate 3 is bolted to the output end of the pressing cylinder 1. The mounting bracket 2 is bolted to one side of the base 11.

[0022] In this embodiment, this design enables the pressure plate 3 to press down on the IGBT module with uniform and appropriate force, ensuring the consistency of rivet force during inspection, improving the reliability and accuracy of inspection, and reducing the labor intensity of operators.

[0023] Furthermore, the lifting mechanism includes a lifting spring 4 and a fixing rod. The fixing rod is provided with a limiting ring. The outer edge of the carrier plate 6 has multiple limiting grooves. The lifting spring 4 is sleeved on the fixing rod. The fixing rod is fixedly connected to the base 11 and located on the base 11. The fixing rod also passes through the corresponding limiting groove. The lifting spring 4 abuts against the carrier plate 6 and the base 11. The limiting ring is located in the corresponding limiting groove.

[0024] In this embodiment, during the inspection process, the carrier plate 6 can automatically adjust its height according to the force on the IGBT module and the rivet, ensuring the stability and accuracy of the inspection.

[0025] Furthermore, the IGBT module rivet inspection fixture also includes multiple linear bearings 5 ​​and a manual solenoid valve 10. The multiple linear bearings 5 ​​are symmetrically arranged in pairs between the carrier plate 6 and the base 11, and the manual solenoid valve 10 is located at one end of the base 11.

[0026] In this embodiment, the introduction of the linear bearing 5 enhances the smoothness and stability of the lifting and lowering of the carrier plate 6, reduces friction and wear, and improves the overall performance of the tooling. The manual solenoid valve 10 allows the operator to manually control the movement of the cylinder 1 as needed, achieving flexibility and controllability in the inspection process. This design not only improves inspection efficiency but also enhances the safety and reliability of the tooling.

[0027] In this invention, the riveted IGBT modules are sequentially placed in multiple IGBT module placement slots on the carrier plate 6, ensuring that the rivets of each module are aligned with the rivet inspection slots. Then, the manual solenoid valve 10 is activated, controlling the pressing cylinder 1 in the pressing mechanism to move the pressure plate 3 downwards via the mounting bracket 2, so that the through hole on the pressure plate 3 accurately fits over the IGBT module. During continued pressing, the carrier plate 6 elastically descends via the lifting mechanism (including the lifting spring 4 and the fixing rod), while the lifting pin 8 in the lifting mounting block 7 is lifted upwards under the action of the lifting spring 9, contacting the rivet and applying pressure. When encountering an incompatible rivet, insufficient riveting force will cause it to be pushed out, thus completing the inspection. After inspection, the solenoid valve is closed, all components are reset, and the IGBT modules are removed and sorted for processing.

[0028] It is worth noting that the standard parts used in this application can all be purchased from the market, and the specific connection methods of each part are all connected by conventional means such as bolts, rivets, and welding that are mature in the prior art. Furthermore, the machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in the description belong to the prior art known to those skilled in the art, and will not be described in detail here.

[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 tooling for inspecting rivets on IGBT modules, characterized in that, The device includes a pressure plate, a pressing mechanism, a carrier plate, multiple lifting mechanisms, two lifting mounting blocks, and a base. The carrier plate has multiple IGBT module placement slots, and each IGBT module placement slot has a rivet inspection slot at each of its four bottom corners. Each lifting mounting block has multiple lifting slots, and a lifting pin is slidably disposed in each lifting slot. A lifting spring is disposed between the lifting pin and the lifting slot. The pressure plate is bolted to the moving end of the pressing mechanism, and the pressing mechanism is bolted to one side of the base. The carrier plate is disposed on the base via multiple lifting mechanisms. The two lifting mounting blocks are respectively bolted to the base, and the carrier plate is located between the pressure plate and the two lifting mounting blocks. Each lifting pin is located in a corresponding rivet inspection slot.

2. The IGBT module rivet inspection fixture as described in claim 1, characterized in that, The pressure plate has multiple through holes adapted to IGBT modules, and each through hole is aligned with the corresponding IGBT module placement slot.

3. The IGBT module rivet inspection fixture as described in claim 2, characterized in that, The pressing mechanism includes a pressing cylinder and a mounting bracket. The pressing cylinder is bolted to the mounting bracket, and the pressure plate is bolted to the output end of the pressing cylinder. The mounting bracket is bolted to one side of the base.

4. The IGBT module rivet inspection fixture as described in claim 3, characterized in that, The lifting mechanism includes a lifting spring and a fixing rod. The fixing rod is provided with a limiting ring. The outer edge of the carrier plate has multiple limiting grooves. The lifting spring is sleeved on the fixing rod. The fixing rod is fixedly connected to the base and located on the base. The fixing rod also passes through the corresponding limiting groove. The lifting spring abuts between the carrier plate and the base. The limiting ring is located in the corresponding limiting groove.

5. The IGBT module rivet inspection fixture as described in claim 4, characterized in that, The IGBT module rivet inspection fixture also includes multiple linear bearings and a manual solenoid valve. The multiple linear bearings are symmetrically arranged in pairs between the carrier and the base, and the manual solenoid valve is located at one end of the base.

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