Chip vacuum welding tooling

Abstract

The utility model discloses a kind of chip vacuum welding tool, including the bottom plate of interval arrangement, middle plate and top plate, and the bottom plate is connected between middle plate by positioning pin, and the middle plate is connected between top plate by pillar;Multiple pressing blocks for fixing chip are opened in top plate, and pressing block includes countersunk cap and pressing rod, and countersunk cap diameter is greater than pressing rod diameter, and positioning hole matched with countersunk cap is opened in top plate, and through hole matched with pressing rod is equipped on middle plate, and tool acupoint is equipped on bottom plate with through hole one to one corresponding.The utility model chip is placed in the acupoint of bottom plate, and middle plate and top plate are connected by pillar, and pressing block successively passes through top plate and middle plate, and chip is pressed by the gravity of pressing block itself downwards.

Description

Technical Field

[0001] This utility model relates to the field of chip vacuum welding technology under high vacuum, and in particular to a chip vacuum welding fixture. Background Technology

[0002] Some precision chips are best soldered in a vacuum environment. This reduces the oxidation reaction between the gas and the solder surface during soldering, lowering the void ratio and thus improving solder strength and reliability. Other chips require a certain degree of airtightness during soldering. Long-term experimental processes have shown that applying a downward force to the chip in a vacuum environment improves solder flow at the soldering point, reduces void ratio, and enhances the strength and sealing of the solder joint. Therefore, there is an urgent need for a chip vacuum soldering fixture. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a chip vacuum welding fixture.

[0004] To achieve the above objectives, this utility model provides a detachable chip vacuum welding fixture, comprising a base plate, a middle plate, and a top plate spaced apart. The base plate and the middle plate are connected by positioning pins, and the middle plate and the top plate are connected by support columns.

[0005] The top plate is provided with multiple pressure blocks for fixing the chip. Each pressure block includes a countersunk cap and a pressure rod. The diameter of the countersunk cap is larger than the diameter of the pressure rod. The top plate has positioning holes that match the countersunk cap. The middle plate has through holes that match the pressure rod. The bottom plate has tooling acupoints that correspond one-to-one with the through holes.

[0006] Preferably, a handle is provided on one side of the base plate.

[0007] Preferably, a plurality of positioning pins are provided between the base plate and the middle plate, the middle plate is provided with pin holes, and the base plate is provided with a corresponding first mounting hole. The positioning pins connect the base plate and the middle plate through the pin holes and the first mounting holes.

[0008] Preferably, the top plate is provided with a first support mounting hole, and the middle plate is provided with a second support mounting hole.

[0009] Preferably, the support is a graphite support.

[0010] Preferably, the pressing block is a stainless steel pressing block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The structure of this tooling is adaptable to the welding of chips of different sizes in a vacuum environment. When welding chips of different sizes, the size of the cavity on the tooling base plate only needs to be changed. This structure can reduce the void ratio and improve the welding strength and sealing of chips in a vacuum environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the chip vacuum welding fixture of this utility model;

[0014] Figure 2 This is a top view of the base plate in the chip vacuum welding fixture of this utility model;

[0015] Figure 3 This is a top view of the middle plate in the chip vacuum welding fixture of this utility model;

[0016] Figure 4 This is a top view of the top plate in the chip vacuum welding fixture of this utility model;

[0017] Figure 5 This is a structural diagram of the pressure block in the chip vacuum welding fixture of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail as follows:

[0022] Reference Figure 1 This utility model provides a detachable chip vacuum welding fixture, including a base plate (1), a middle plate (2) and a top plate (3) spaced apart. The base plate (1) and the middle plate (2) are connected by positioning pins, and the middle plate (2) and the top plate (3) are connected by a support column (5). The top plate (3) is provided with a plurality of pressure blocks (4) for fixing the chip. The pressure block (4) includes a countersunk cap and a pressure rod. The diameter of the countersunk cap is larger than the diameter of the pressure rod. The top plate (3) is provided with a positioning hole (31) that matches the countersunk cap. The middle plate (2) is provided with a through hole (21) that matches the pressure rod. The base plate (1) is provided with a fixture cavity (11) that corresponds to the through hole.

[0023] Reference Figure 2 In this tooling device, the base plate (1) is used to place the product in the corresponding acupoint (11). The first mounting hole (12) is the mounting position of the graphite positioning pin, and the second mounting hole (13) is the mounting position of the handle (6).

[0024] Reference Figure 3 In this tooling device, the middle plate (2) has a stainless steel pressure block through hole (21) corresponding to the acupoint (11) of the base plate (1), which is used to limit the stainless steel pressure block (4). In order to ensure the consistency of the position of the middle plate (2) and the base plate (1), graphite positioning pin holes (22) are provided at the four corners of the middle plate (2). The second support mounting hole (23) provides the installation position for the graphite support (5).

[0025] Reference Figure 4 In this tooling device, the top plate (3) has a stainless steel pressure block positioning hole (31) corresponding to the stainless steel pressure block through hole (21) of each middle plate (2). The first support mounting hole (32) provides an installation position for the graphite support (5).

[0026] Reference Figure 5The stainless steel pressure block (4) in this fixture applies downward force to the chip to increase the fluidity of the solder and improve the sealing of the chip during vacuum welding. The graphite support (5) in this fixture connects the middle plate (2) and the top plate (3). The part of the middle plate (2) and the top plate (3) connected by the graphite support (5) limits and supports the stainless steel pressure block (4). The handle (6) is installed in the handle (6) mounting hole on the bottom plate (1) to facilitate manual removal of the fixture from the welding chamber after the product is welded.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chip vacuum welding fixture, characterized in that, It includes a base plate, a middle plate, and a top plate that are spaced apart. The base plate and the middle plate are connected by positioning pins, and the middle plate and the top plate are connected by support columns. The top plate is provided with multiple pressure blocks for fixing the chip. Each pressure block includes a countersunk cap and a pressure rod. The diameter of the countersunk cap is larger than the diameter of the pressure rod. The top plate has positioning holes that match the countersunk cap. The middle plate has through holes that match the pressure rod. The bottom plate has tooling acupoints that correspond one-to-one with the through holes.

2. The chip vacuum welding fixture as described in claim 1, characterized in that, A handle is provided on one side of the base plate.

3. The chip vacuum welding fixture as described in claim 2, characterized in that, A plurality of positioning pins are provided between the base plate and the middle plate. The middle plate is provided with pin holes, and the base plate is provided with corresponding first mounting holes. The positioning pins connect the base plate and the middle plate through the pin holes and the first mounting holes.

4. The chip vacuum welding fixture as described in claim 3, characterized in that, The top plate is provided with a first support mounting hole, and the middle plate is provided with a second support mounting hole.

5. The chip vacuum welding fixture as described in claim 4, characterized in that, The support is a graphite support.

6. The chip vacuum soldering fixture as described in claim 5, characterized in that, The pressing block is a stainless steel pressing block.

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