TOP-B glue filling and pressure maintaining jig

Abstract

The utility model relates to the technical field of semiconductor packaging, and specifically discloses a TOP-B glue pouring pressure maintaining jig, which comprises a bottom plate, the bottom plate is of a rectangular plate structure, a plurality of groups of mounting hole positions are evenly arranged on the upper end face of the bottom plate; clamping grooves are arranged on the upper end face of the bottom plate, the length direction of the clamping grooves and the bottom plate is parallel and penetrates through the left and right sides of the bottom plate, the standard mounting hole positions are used for quick clamping, the clamping grooves are convenient for batch positioning and limiting of products, and the labor time and labor intensity of manual clamping are greatly reduced; the Teflon pad avoids surface damage of the product and guarantees insulation safety in a high-temperature environment; the detachable pad design significantly prolongs the service life of the jig; the cooperation of the positioning pins and the positioning holes enables the jig to be stably stacked, and greatly optimizes the space utilization rate of the production site; the overall structure takes into account pressure maintaining precision and operation convenience, and provides high reliability guarantee for batch manufacturing of power modules.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor packaging technology, and specifically discloses a TOP-B potting and pressure holding fixture. Background Technology

[0002] In the manufacturing of power modules (such as IGBTs and SiC modules), the welding and assembly of housings and DBCs (direct copper-clad substrates) requires a holding pressure process to ensure the uniformity of the weld layer. Traditional processes involve manually placing the product and then applying holding pressure, relying heavily on operator experience. This is a critical step in the high-precision manufacturing of electronic devices. With the surging demand for power modules from the new energy industry, the industry urgently needs to improve the efficiency, consistency, and space utilization of the holding pressure process to meet the demands of mass production.

[0003] The current mainstream process uses a purely manual pressing method: operators need to hold clamping devices (such as F-clamps and C-clamps) to clamp, press, and disassemble each product one by one. This results in high labor costs, and single-piece operation relies on full manual intervention, which reduces processing efficiency. Furthermore, the continuous repetitive clamping action leads to operator fatigue and can easily cause inaccurate pressing pressure or product slippage. Utility Model Content

[0004] This utility model proposes a TOP-B glue-filling and pressure-holding fixture, which enables quick clamping and immediate use through standardized installation holes, and the clamping groove facilitates batch positioning and limiting of products, greatly reducing the time and labor intensity of manual clamping.

[0005] This utility model is implemented as follows: a TOP-B potting and pressure-holding fixture, comprising:

[0006] The base plate is a rectangular plate structure, and multiple sets of evenly distributed mounting holes are provided on both the front and rear sides of the upper end of the base plate.

[0007] The locking groove is provided in two places and is opened on the upper end surface of the base plate. The two locking grooves are parallel to the length direction of the base plate and pass through the left and right sides of the base plate.

[0008] Two pads are provided, each disposed at the bottom of one of the two locking grooves;

[0009] The support assembly includes multiple locating pins that are fixedly connected to the bottom of the base plate.

[0010] As a preferred embodiment of the TOP-B potting and pressure-holding fixture of this utility model, the upper end face of the base plate is provided with a plurality of positioning holes corresponding to the position and number of positioning pins.

[0011] As a preferred embodiment of the TOP-B potting and pressure-holding fixture of this utility model, both the positioning pin and the positioning hole have circular cross-sections.

[0012] As a preferred embodiment of the TOP-B potting and pressure-holding fixture of this utility model, the pad is made of Teflon material.

[0013] As a preferred embodiment of the TOP-B potting and pressure-holding fixture of this utility model, the pad is detachably connected to the locking groove by multiple fixing bolts.

[0014] As a preferred embodiment of the TOP-B potting and pressure-holding fixture of this utility model, the mounting holes are a four-hole structure with a rectangular distribution.

[0015] The beneficial effects of this utility model are:

[0016] This fixture features standardized mounting holes for quick clamping and immediate use, while the locking slots facilitate batch positioning and limiting of products, significantly reducing manual clamping time and labor intensity. Teflon pads prevent surface damage and ensure insulation safety in high-temperature environments. The removable pad design significantly extends the fixture's lifespan. The combination of positioning pins and holes allows for stable stacking of the fixture, greatly optimizing space utilization on the production floor. The overall structure balances pressure holding accuracy with ease of operation, providing high reliability for mass production of power modules. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a top view of the overall structure of this utility model.

[0020] The markings in the diagram are: 1. Base plate; 2. Locking groove; 3. Pad plate; 4. Mounting hole; 5. Locating pin; 6. Locating hole; 7. Fixing bolt. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-2 A TOP-B potting and pressure-holding fixture, comprising:

[0023] The base plate 1 is a rectangular plate structure. Multiple sets of evenly distributed mounting holes 4 are provided on both the front and rear sides of the upper end of the base plate 1.

[0024] The locking groove 2 is provided in two places and is opened on the upper end surface of the base plate 1. The two locking grooves 2 are parallel to the length direction of the base plate 1 and pass through the left and right sides of the base plate 1.

[0025] Two pads 3 are provided and are respectively located at the bottom of the two locking grooves 2;

[0026] The support assembly includes multiple positioning pins 5 that are fixedly connected to the bottom of the base plate 1.

[0027] In this embodiment: when the operator places the power module on the Teflon pad 3 in the clamping groove 2, the high-temperature resistant insulation properties of the pad 3 prevent scratches on the DBC substrate; the mounting holes 4 are a rectangular four-hole structure used to assemble a universal standard quick clamp. After the standard quick clamp is inserted through the mounting holes 4, the clamp is pressed down to the module surface to apply uniform pressure. At this time, the base plate 1 bears the overall structural stress; after the pressure holding is completed, the product is removed and the fixture is precisely inserted into the positioning hole 6 of the next fixture through the positioning pin 5 at the bottom of the base plate 1 to achieve vertical stacking. This process relies on the circular cross-section of the positioning pin 5 and the positioning hole 6 for guidance. The pad 3 can be disassembled and replaced by the fixing bolts 7 to adapt to wear and maintenance, which greatly reduces the time and labor intensity of manual clamping and optimizes the space utilization of the production site; the overall structure takes into account the pressure holding accuracy and operation convenience, providing a high reliability guarantee for the mass production of power modules.

[0028] As a technical optimization of this utility model, the upper end surface of the base plate 1 is provided with a plurality of positioning holes 6 corresponding to the position and number of positioning pins 5.

[0029] In this embodiment, vertical stacking is achieved by precisely inserting the positioning pin 5 at the bottom of the base plate 1 into the positioning hole 6 of the next fixture, thus saving space.

[0030] As a technical optimization of this utility model, both the positioning pin 5 and the positioning hole 6 have circular cross-sections.

[0031] In this embodiment, the positioning pin 5 and the positioning hole 6 adopt a circular cross-section structure, which is the simplest, most reliable and low-cost positioning method. It can effectively constrain the movement and rotational freedom of the fixture in the horizontal plane, ensuring the stability and ease of use of the positioning.

[0032] As a technical optimization of this utility model, the pad 3 is made of Teflon.

[0033] In this embodiment, the pad 3 is made of Teflon material, which mainly utilizes its extremely low surface energy and excellent high temperature resistance and chemical corrosion resistance to effectively prevent uncured adhesive or flux residue from adhering to the fixture during the potting and pressure holding process, and to prevent the DBC substrate from being scratched.

[0034] As a technical optimization of this utility model, the pad 3 is detachably connected to the locking groove 2 by multiple fixing bolts 7.

[0035] In this embodiment, the pad 3 is detachably connected to the locking groove 2 by the fixing bolt 7, which allows for quick and convenient disassembly, replacement or maintenance when the pad 3 is worn, contaminated or needs to be replaced for different products, thereby extending the life of the fixture body, reducing usage costs and enhancing adaptability.

[0036] As a technical optimization of this utility model, the mounting hole 4 is a four-hole structure with a rectangular distribution.

[0037] In this embodiment: the mounting holes 4 are a rectangular four-hole structure. This layout provides a stable and balanced clamping force distribution and is compatible with standard quick clamps, facilitating quick installation.

[0038] The working principle and usage process of this utility model are as follows: The operator first aligns the quick clamp base with the mounting hole 4 and inserts and locks it. Then, the Housing-DBC welding product is placed on the Teflon pad 3 in the locking groove 2. The quick clamp handle is moved to make the pressure head press down vertically. The pressure stress is distributed through the rectangular layout of the four holes. The locking groove 2 limits and locks the Housing-DBC welding product to ensure that the product is subjected to uniform force. During the pressure holding process, the rigid structure of the base plate 1 resists deformation, and the positioning pin 5 suspends and supports the fixture. After the pressure holding is completed, the quick clamp is released, the product is taken out, and the positioning pin 5 at the bottom of this fixture is inserted into the positioning hole 6 of another fixture. The self-centering property of the circular cross section is used to complete the stacking. If the pad 3 is worn, the fixing bolt 7 can be loosened and replaced.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A TOP-B potting and pressure-holding fixture, characterized in that: include: The base plate (1) is a rectangular plate structure. Multiple sets of evenly distributed mounting holes (4) are opened on both the front and rear sides of the upper end of the base plate (1). The locking groove (2) is provided in two places and is opened on the upper end surface of the base plate (1). The two locking grooves (2) are parallel to the length direction of the base plate (1) and penetrate the left and right sides of the base plate (1). Pad (3), two pads (3) are provided and are respectively provided at the bottom of the two locking grooves (2); The support assembly includes multiple positioning pins (5) that are fixedly connected to the bottom of the base plate (1).

2. The TOP-B potting and pressure-holding fixture according to claim 1, characterized in that: The upper surface of the base plate (1) is provided with a plurality of positioning holes (6) corresponding to the position and number of positioning pins (5).

3. The TOP-B potting and pressure-holding fixture according to claim 2, characterized in that: The cross-sections of the positioning pin (5) and the positioning hole (6) are both circular.

4. The TOP-B potting and pressure-holding fixture according to claim 1, characterized in that: The pad (3) is made of Teflon.

5. A TOP-B potting and pressure-holding fixture according to claim 1, characterized in that: The pad (3) is detachably connected to the locking groove (2) by multiple fixing bolts (7).

6. A TOP-B potting and pressure-holding fixture according to claim 1, characterized in that: The mounting holes (4) are a four-hole structure with a rectangular distribution.

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