IGBT-Easy flip-chip pin welding jig

Abstract

The utility model relates to the technical field of DBC board welding, in particular to an IGBT-Easy flip-chip pin welding jig which comprises a DBC material, and a plurality of material pins are fixedly connected to the DBC material. The device comprises a DBC positioning base and an inverted positioning wall body, a positioning mounting groove is formed in the top of the inverted positioning wall body, an inverted pin clamping plate is fixedly connected to the inner side of the positioning mounting groove, an inverted pin positioning plate is fixedly connected to the top of the inverted pin clamping plate, and a plurality of fool-proof positioning holes are formed in the inverted pin positioning plate. According to the utility model, the fool-proof positioning holes are arranged to fully prevent the material pins from position offset during plugging and positioning, so that the positioning accuracy of the DBC material and the material pins is ensured, the positioning efficiency is improved, the positioning and fixing operations of the DBC material and the material pins are more convenient, the subsequent welding operation of the material pins is facilitated, and the production efficiency is improved. And the overall efficiency of the DBC board flip pin welding operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of DBC board welding, and particularly relates to an IGBT-Easy flip-chip pin welding jig. Background Art

[0002] A DBC board refers to a special electronic material made of a ceramic substrate and copper foil under high-temperature conditions. The ceramic substrate usually uses a conductive material with high thermal conductivity such as alumina or aluminum nitride. The ceramic substrate and copper foil are generally connected by chemically active metals such as titanium and manganese. This connection structure enables the DBC board to have good electrical and thermal conductivity, thus contributing to the packaging and heat dissipation of high-power electronic devices.

[0003] The following problems often exist in the prior art during use:

[0004] Currently, during the use of the DBC material flip-chip pin welding jig, the flip-chip pin positioning operation is relatively cumbersome, and the positioning of the flip-chip pins is prone to position deviation, affecting the subsequent welding operation of the DBC material, thereby reducing the overall efficiency of the DBC board flip-chip pin welding operation. Summary of the Utility Model

[0005] In view of the above-mentioned drawbacks of the prior art, the utility model provides an IGBT-Easy flip-chip pin welding jig, which can effectively solve the problem that the overall welding operation efficiency of the DBC board is relatively low due to the cumbersome flip-chip pin welding positioning in the prior art.

[0006] To achieve the above object, the utility model is realized through the following technical solutions:

[0007] The utility model provides an IGBT-Easy flip-chip pin welding jig, including a DBC material, and a plurality of material pins are fixedly connected to the DBC material;

[0008] A DBC positioning base and a flip-chip positioning wall body, a positioning installation groove is opened at the top of the flip-chip positioning wall body, a flip-chip pin clamping plate is fixedly connected to the inner side of the positioning installation groove, a flip-chip pin positioning plate is fixedly connected to the top of the flip-chip pin clamping plate, and a plurality of anti-fooling positioning holes are opened on the flip-chip pin positioning plate, and the anti-fooling positioning holes are matched with the material pins.

[0009] Further, a DBC positioning groove and a fixing groove are opened at the top of the DBC positioning base, the DBC positioning groove is matched with the DBC material, and the flip-chip positioning wall body is matched with the fixing groove.

[0010] Further, a plurality of insertion holes are provided on both the inverted positioning wall body and the inverted pin clamping plate. The material pins are matched with the insertion holes, and a plurality of anti-fooling positioning holes correspond to the plurality of insertion holes.

[0011] Further, a needle pressing cover plate is fixedly connected to the bottom of the inverted positioning wall body. A plurality of abutting grooves are provided on the top of the needle pressing cover plate, and the abutting grooves are matched with the DBC material.

[0012] Further, both the DBC positioning base and the inverted positioning wall body are made of aluminum alloy material, and both the inverted pin positioning plate and the needle pressing cover plate are made of titanium alloy material.

[0013] Further, fixing through holes are provided on both the inverted positioning wall body, the inverted pin clamping plate and the inverted pin positioning plate, and the inverted pin clamping plate is made of high-temperature silica gel material.

[0014] The technical solution provided by the present utility model has the following beneficial effects compared with the known prior art:

[0015] In the present utility model, an inverted pin positioning plate is provided. By providing anti-fooling positioning holes on the inverted pin positioning plate, it is possible to fully avoid the position deviation of the material pins during the insertion and positioning, ensure the positioning accuracy of the DBC material and the material pins, and improve the positioning efficiency.

[0016] In the present utility model, a DBC positioning base is provided. By providing a DBC positioning groove and a fixing groove on the DBC positioning base, it is convenient to position and place the DBC material in the DBC positioning base. The fixing groove facilitates the installation and fixation of the DBC positioning base and the inverted positioning wall body, contributes to the subsequent welding operation of the material pins, and improves the overall efficiency of the DBC board inverted pin welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is an exploded view of one perspective of the present utility model;

[0019] Figure 2 It is an exploded view of another perspective of the present utility model;

[0020] Figure 3 It is a cross-sectional view of the inverted pin positioning plate in the present utility model;

[0021] Reference numerals: 1, DBC material; 2, material pin; 3, DBC positioning base; 4, flip-chip positioning wall; 5, positioning installation groove; 6, flip-chip pin clamping plate; 7, flip-chip pin positioning plate; 8, anti-fooling positioning hole; 9, DBC positioning groove; 10, fixing groove; 11, insertion hole; 12, needle pressing cover plate; 13, abutting groove; 14, fixing through hole. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model will be further described below with reference to the embodiments.

[0024] Embodiment: Refer to Figures 1 to 3 , an IGBT-Easy flip-chip pin welding fixture, including a DBC material 1, a DBC positioning base 3 and a flip-chip positioning wall 4. A plurality of material pins 2 are fixedly connected to the DBC material 1; both the DBC positioning base 3 and the flip-chip positioning wall 4 are made of aluminum alloy. A DBC positioning groove 9 and a fixing groove 10 are formed at the top of the DBC positioning base 3. The DBC positioning groove 9 matches the DBC material 1, and the flip-chip positioning wall 4 matches the fixing groove 10;

[0025] By forming the DBC positioning groove 9 and the fixing groove 10 on the DBC positioning base 3, the DBC material 1 can be conveniently positioned and placed in the DBC positioning base 3. The fixing groove 10 facilitates the installation and fixation of the DBC positioning base 3 and the flip-chip positioning wall 4, helps the subsequent welding operation of the material pins 2, and improves the overall efficiency of the flip-chip pin welding operation of the DBC board.

[0026] Refer to Figures 1 to 3, a positioning installation groove 5 is provided at the top of the inverted positioning wall body 4. An inverted pin clamping plate 6 is fixedly connected to the inner side of the positioning installation groove 5. An inverted pin positioning plate 7 is fixedly connected to the top of the inverted pin clamping plate 6. A number of anti-fool positioning holes 8 are provided on the inverted pin positioning plate 7. The anti-fool positioning holes 8 are matched with the material pins 2. A number of insertion holes 11 are provided on both the inverted positioning wall body 4 and the inverted pin clamping plate 6. The material pins 2 are matched with the insertion holes 11, and a number of anti-fool positioning holes 8 correspond to a number of insertion holes 11. Fixed through holes 14 are provided on both the inverted positioning wall body 4, the inverted pin clamping plate 6 and the inverted pin positioning plate 7. And the inverted pin clamping plate 6 is made of high-temperature silica gel material. A needle pressing cover plate 12 is fixedly connected to the bottom of the inverted positioning wall body 4. The inverted pin positioning plate 7 and the needle pressing cover plate 12 are both made of titanium alloy material. A number of abutting grooves 13 are provided on the top of the needle pressing cover plate 12. The abutting grooves 13 are matched with the DBC material 1;

[0027] During the process that the material pins 2 are inserted into the inverted positioning wall body 4 by a fully automatic pin insertion machine, the material pins 2 will pass through the anti-fool positioning holes 8 on the inverted pin positioning plate 7. The anti-fool positioning holes 8 are used to prevent the material pins 2 from generating position offsets during the insertion and positioning, ensure the positioning accuracy of the DBC material 1 and the material pins 2, and thus improve the positioning efficiency.

[0028] The working principle of the present utility model is as follows:

[0029] 1. When in use, the material pins 2 are cut by a fully automatic pin insertion machine and inserted into a number of insertion holes 11 on the inverted positioning wall body 4, and finally inserted into a number of anti-fool positioning holes 8 on the inverted pin positioning plate 7. The anti-fool positioning holes 8 can fully prevent the material pins 2 from generating position offsets during the insertion and positioning, ensure the positioning accuracy of the DBC material 1 and the material pins 2, and improve the positioning efficiency;

[0030] 2. After the DBC material 1 and the material pins 2 are inserted, reverse the DBC material 1 and the inverted positioning wall body 4 and place them into the DBC positioning base 3, and then vacuum sintering can be carried out.

[0031] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. IGBT-Easy flip-chip pin welding fixture, characterized by: include: A DBC material (1), wherein a plurality of material pins (2) are fixedly connected to the DBC material (1); A DBC positioning base (3) and an inverted positioning wall (4), wherein a positioning installation groove (5) is provided on the top of the inverted positioning wall (4), a inverted pin clamping plate (6) is fixedly connected to the inner side of the positioning installation groove (5), a inverted pin positioning plate (7) is fixedly connected to the top of the inverted pin clamping plate (6), and a plurality of foolproof positioning holes (8) are provided on the inverted pin positioning plate (7), wherein the foolproof positioning holes (8) match the material pins (2).

2. The IGBT-Easy flip-chip pin welding fixture according to claim 1, characterized in that: The top of the DBC positioning base (3) is provided with a DBC positioning groove (9) and a fixing groove (10); the DBC positioning groove (9) matches the DBC material (1), and the inverted positioning wall (4) matches the fixing groove (10).

3. The IGBT-Easy flip-chip pin welding fixture according to claim 1, characterized in that: The inverted positioning wall (4) and the inverted pin clamping plate (6) are both provided with a plurality of plug holes (11), the material pins (2) match the plug holes (11), and a plurality of the foolproof positioning holes (8) correspond to the plurality of plug holes (11).

4. The IGBT-Easy flip-chip pin welding fixture according to claim 1, characterized in that: A pressure needle cover plate (12) is fixedly connected to the bottom of the inverted positioning wall (4), and a plurality of abutment grooves (13) are formed on the top of the pressure needle cover plate (12), wherein the abutment grooves (13) match the DBC material (1).

5. The IGBT-Easy flip-chip pin welding fixture according to claim 4, characterized in that: The DBC positioning base (3) and the inverted positioning wall (4) are both made of aluminum alloy, and the inverted pin positioning plate (7) and the pressure pin cover plate (12) are both made of titanium alloy.

6. The IGBT-Easy flip-chip pin welding fixture according to claim 1, characterized in that: The flip-chip positioning wall (4), the flip-chip pin clamping plate (6) and the flip-chip pin positioning plate (7) are all provided with fixing through holes (14), and the flip-chip pin clamping plate (6) is made of high-temperature silicone material.

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