Novel graphite jig for vapor chamber diffusion welding

Abstract

The novel graphite jig comprises a top plate, a welding jig body, a base and a connecting assembly, the top plate and the base are circular and are correspondingly arranged up and down, and a first opening and a second opening are formed in the middle of the top plate and the middle of the base in a penetrating mode respectively. During use, the welding jigs are circumferentially and uniformly arranged between the top plate and the base, the welding jigs are made of graphite, heat transfer can be better carried out, the welding jigs are connected and fixed through the connecting assemblies, the welding jigs can be stacked up and down, and the welding jigs are not prone to falling off. Each welding jig can be detached and replaced independently, so that scrapped welding jigs of people can be detached and replaced conveniently, replacement cost is saved, and the welding jig has the advantages of being high in practicability and convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature balancing plates, in particular to a novel graphite fixture for diffusion welding of temperature balancing plates. Background Art

[0002] The temperature spreader is a heat dissipation device that is widely used in chips, electronic equipment, etc. It has good heat dissipation performance. The interior of the temperature spreader is a vacuum chamber, and its edges are usually welded together. Diffusion welding is usually used for welding the temperature spreader. Diffusion welding is a type of pressure welding. It refers to the process in which the surfaces in contact with each other are brought close to each other under the action of high temperature and pressure, and local plastic deformation occurs. After a certain period of time, the atoms in the bonding layer diffuse with each other, forming a new diffusion layer at the interface, thereby forming an overall reliable connection.

[0003] The graphite jigs for diffusion welding of temperature-averaging plates currently used in the industry are mostly manufactured by manufacturing a graphite disk that is compatible with the inner diameter of a diffusion welding furnace, and opening a plurality of symmetrical holes on the graphite disk to place the temperature-averaging plates to be diffused. This design has high requirements on the strength and density of the graphite used, and the unit price of graphite is expensive. In addition, since one mold has multiple holes, if one hole is damaged, the entire piece needs to be scrapped, and the scrapping cost is high. Therefore, it is very necessary to design a new type of graphite jig for diffusion welding of temperature-averaging plates that is highly practical and easy to replace. Utility Model Content

[0004] The utility model aims to provide a novel graphite fixture for diffusion welding of a temperature-averaging plate, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a new graphite jig for diffusion welding of a temperature equalizing plate, comprising a top plate, a welding jig, a base and a connecting assembly, the top plate and the base being circular and correspondingly arranged up and down, a first opening and a second opening being respectively penetrated through the middle of the top plate and the base, the welding jig being evenly arranged circumferentially between the top plate and the base, the top plate and the base being fixedly connected by the connecting assembly, and the connecting assembly being arranged between adjacent welding jigs.

[0006] According to the above technical solution, the welding jig includes a jig plate and an extrusion plate, the upper end of the jig plate is provided with acupuncture points, the jig plate and the extrusion plate are connected by a positioning component, the positioning component includes positioning pins and positioning grooves, the positioning pins are evenly distributed on the upper ends of the jig plate and the extrusion plate, and the positioning grooves are evenly distributed on the lower ends of the jig plate and the extrusion plate.

[0007] According to the above technical solution, a first groove and a second groove are respectively provided at opposite ends of the top plate and the base, and the first groove and the second groove are respectively evenly distributed circumferentially on the top plate and the base, and the lower end of the welding jig is located in the second groove and the upper end is located in the first groove.

[0008] According to the above technical solution, the connecting assembly includes a connecting pin and a nut, the upper end of the base is evenly provided with threaded grooves, the lower end of the connecting pin is threadedly connected in the threaded groove, the top plate is evenly provided with through grooves, the upper end of the connecting pin penetrates the through grooves and is threadedly connected with the nut.

[0009] According to the above technical solution, the first groove, the second groove and the corners of the welding fixture are all provided with rounded corners.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0011] (1) When the utility model is in use, the circumference of the welding jig is arranged between the top plate and the base. The material of the welding jig is graphite, which can better transfer heat. The welding jig is connected and fixed by a connecting assembly. The welding jig can be stacked up and down. The number of stacks can be flexibly adjusted according to actual production needs, and the number is not limited. After the fixation is completed, the whole is placed in a diffusion welding furnace for diffusion welding. The welding jig is used in a plurality of stacks. Each welding jig can be disassembled and replaced separately, which is convenient for people to disassemble and replace the scrapped welding jigs conveniently and saves the replacement cost. In addition, due to the arrangement of the first opening and the second opening, an overheating channel can be formed on the top plate and the base, which is convenient for the temperature around the welding jig to be consistent, which can improve the welding effect of the temperature equalizing plate diffusion welding, prevent the welding jig from being heated unevenly, resulting in welding failure and workpiece scrapping, effectively improve the welding success rate, reduce the scrap rate of the workpiece, and save costs.

[0012] (2) The temperature balancing plate is placed in the hole at the upper end of the fixture plate, and a certain pressure is applied to the temperature balancing plate through the extrusion plate to facilitate diffusion welding of the temperature balancing plate. The fixture plate and the extrusion plate are positioned and connected through the positioning assembly, and they can be quickly positioned and docked. At the same time, the fixture plate and the extrusion plate can be prevented from being misaligned and offset. The upper end surface of the extrusion plate at the top does not need to be provided with a positioning pin.

[0013] (3) The first groove and the second groove can be used to limit the position of the welding jig to prevent the welding jig from displacement, thereby further increasing the stability of the welding jig. The lower end of the connecting pin can be threadedly connected to the upper end of the base. The upper end of the connecting pin passes through the through groove and is threadedly connected by a nut. The length of the connecting pin can be set to a variety of specifications. The appropriate specifications can be selected according to the number of welding jigs stacked, so that the top plate, the welding jig and the base can be securely connected.

[0014] (4) The rounded corners can avoid the sharpness of the corners of the welding jig, greatly enhancing the safety of people when operating the welding jig. At the same time, the rounded corners of the first groove, the second groove and the welding jig are the same size and can be adaptively adjusted according to on-site requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is an explosion schematic diagram of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the top plate of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the base of the utility model;

[0020] Figure 5 This is the first exploded schematic diagram of the welding fixture of the utility model;

[0021] Figure 6 This is a second exploded schematic diagram of the welding fixture of the utility model;

[0022] Figure 7 It is a schematic diagram of the main cross-sectional view of the extruded plate of the utility model;

[0023] In the figure: 1-top plate, 2-welding jig, 201-jig plate, 202-extrusion plate, 3-base, 4-connecting assembly, 401-connecting pin, 402-nut, 5-first opening, 6-second opening, 7-positioning assembly, 701-positioning pin, 702-positioning groove, 8-thread groove, 9-through groove, 10-rounded corner, 11-acupoint, 12-first groove, 13-second groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7The utility model provides a technical solution: a new graphite fixture for diffusion welding of a temperature-averaging plate, comprising a top plate 1, a welding fixture 2, a base 3 and a connecting component 4, wherein the top plate 1 and the base 3 are circular and arranged correspondingly up and down, and a first opening 5 and a second opening 6 are respectively penetrated through the middle of the top plate 1 and the base 3, and the welding fixture 2 is evenly arranged between the top plate 1 and the base 3, and the top plate 1 and the base 3 are fixedly connected by the connecting component 4, and the connecting component 4 is arranged between adjacent welding fixtures 2. When the utility model is in use, the welding fixture 2 is arranged between the top plate 1 and the base 3 in a circumference, and the material thereof is graphite, which can better transfer heat, and is connected and fixed by the connecting component 4, and the welding The welding jig 2 can be stacked up and down, and the number of stacks can be flexibly adjusted according to actual production needs. The number is not limited. After the fixing is completed, the whole is placed in a diffusion welding furnace for diffusion welding. The welding jig 2 is used in a plurality of stacks, and each welding jig 2 can be disassembled and replaced separately, which is convenient for people to disassemble and replace the scrapped welding jig 2 conveniently and easily, saving the replacement cost. Due to the arrangement of the first opening 5 and the second opening 6, an overheating channel can be formed at the top plate 1 and the base 3, which is convenient for the temperature around the welding jig 2 to be consistent, which can improve the welding effect of the temperature equalizing plate diffusion welding, prevent the welding jig 2 from being heated unevenly, resulting in welding failure and workpiece scrapping, effectively improving the success rate of welding, reducing the scrap rate of workpieces, and saving costs.

[0026] Specifically, the welding jig 2 includes a jig plate 201 and an extrusion plate 202, the upper end of the jig plate 201 is provided with an acupuncture point 11, the jig plate 201 and the extrusion plate 202 are connected by a positioning component 7, the positioning component 7 includes a positioning pin 701 and a positioning groove 702, the positioning pin 701 is evenly distributed on the upper ends of the jig plate 201 and the extrusion plate 202, the positioning groove 702 is evenly distributed on the lower ends of the jig plate 201 and the extrusion plate 202, the temperature balancing plate is placed in the acupuncture point 11 on the upper end of the jig plate 201, a certain pressure is applied to the temperature balancing plate by the extrusion plate 202, so as to facilitate diffusion welding of the temperature balancing plate, the jig plate 201 and the extrusion plate 202 are positioned and connected by the positioning component 7, and can be quickly positioned and docked, and at the same time, the jig plate 201 and the extrusion plate 202 can be prevented from being misaligned and offset, and the upper end surface of the extrusion plate 202 at the uppermost end may not be provided with a positioning pin 701;

[0027] Specifically, the top plate 1 and the base 3 have opposite ends respectively provided with a first groove 12 and a second groove 13, the first groove 12 and the second groove 13 are respectively and evenly distributed on the top plate 1 and the base 3, the lower end of the welding jig 2 is located in the second groove 13 and the upper end is located in the first groove 12, and the position of the welding jig 2 can be limited by the first groove 12 and the second groove 13 to prevent the welding jig 2 from displacement, thereby further increasing the stability of the placement of the welding jig 2;

[0028] Specifically, the connecting assembly 4 includes a connecting pin 401 and a nut 402. The upper end of the base 3 is uniformly provided with a thread groove 8. The lower end of the connecting pin 401 is threadedly connected in the thread groove 8. The top plate 1 is uniformly provided with a through groove 9. The upper end of the connecting pin 401 penetrates the through groove 9 and is threadedly connected with the nut 402. The lower end of the connecting pin 401 can be threadedly connected to the upper end of the base 3. The upper end of the connecting pin 401 penetrates the through groove 9 and is threadedly connected by the nut 402. The length of the connecting pin 401 can be set to a variety of specifications. The applicable specifications are selected according to the number of superimposed welding fixtures 2, so that the top plate 1, the welding fixture 2 and the base 3 can be securely connected.

[0029] Specifically, the first groove 12, the second groove 13 and the corners of the welding jig 2 are all provided with rounded corners 10. The rounded corners 10 can avoid the sharpness of the corners of the welding jig 2, greatly enhancing the safety of people when operating the welding jig 2. At the same time, the first groove 12, the second groove 13 and the rounded corners 10 of the welding jig 2 are the same size and can be adaptively adjusted according to on-site requirements.

[0030] Working principle: When the utility model is in use, the welding jig 2 is circumferentially arranged between the top plate 1 and the base 3. The material thereof is graphite, which can better transfer heat. The welding jig 2 is connected and fixed by the connecting component 4. The welding jig 2 can be stacked up and down. The number of stacks can be flexibly adjusted according to actual production needs, and the number is not limited. After the fixing is completed, the whole is placed in a diffusion welding furnace for diffusion welding. Due to the arrangement of the first opening 5 and the second opening 6, an overheating channel can be formed at the top plate 1 and the base 3, which is convenient for the temperature around the welding jig 2 to be consistent, and can improve the welding effect of the temperature balancing plate diffusion welding, prevent the welding jig 2 from being heated unevenly, resulting in welding failure and workpiece scrapping, effectively improve the welding success rate, reduce the scrap rate of the workpiece, and save costs. The temperature balancing plate is placed in the acupuncture point 11 at the upper end of the jig plate 201, and a certain pressure is applied to the temperature balancing plate by the extrusion plate 202, so as to facilitate the diffusion welding of the temperature balancing plate. The jig plate 201 and the extrusion plate 202 are positioned and connected by the positioning component 7. It can be quickly positioned and docked, and at the same time, the jig plate 201 and the extrusion plate 202 can be prevented from being misaligned and offset. The upper end surface of the extrusion plate 202 at the uppermost end may not be provided with a positioning pin 701. The welding jig 2 can be position-limited by the first groove 12 and the second groove 13 to prevent the welding jig 2 from being displaced and offset, further increasing the stability of the placement of the welding jig 2. The lower end of the connecting pin 401 can be threadedly connected to the upper end of the base 3. The upper end of the connecting pin 401 passes through the through groove 9 and is threadedly connected by the nut 402. The length of the connecting pin 401 can be set to a variety of specifications. The applicable specifications are selected according to the number of superimposed welding jigs 2. The top plate 1, the welding jig 2 and the base 3 can be securely connected. The rounded corners 10 set can avoid the sharpness of the corners of the welding jig 2, greatly enhancing the safety of people when operating the welding jig 2. At the same time, the first groove 12, the second groove 13 and the rounded corner 10 of the welding jig 2 are the same size and can be adaptively adjusted according to on-site requirements.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A new graphite fixture for diffusion welding of a temperature-averaging plate, comprising a top plate (1), a welding fixture (2), a base (3) and a connecting component (4), characterized in that: The top plate (1) and the base (3) are circular and arranged correspondingly up and down; a first opening (5) and a second opening (6) are respectively provided through the middle of the top plate (1) and the base (3); the welding jig (2) is evenly arranged between the top plate (1) and the base (3); the top plate (1) and the base (3) are fixedly connected via the connecting assembly (4); and the connecting assembly (4) is arranged between adjacent welding jigs (2).

2. The novel graphite fixture for diffusion welding of a temperature-homing plate according to claim 1 is characterized in that: The welding jig (2) comprises a jig plate (201) and an extrusion plate (202); an acupuncture point (11) is provided at the upper end of the jig plate (201); the jig plate (201) and the extrusion plate (202) are connected via a positioning assembly (7); the positioning assembly (7) comprises positioning pins (701) and positioning grooves (702); the positioning pins (701) are evenly distributed at the upper ends of the jig plate (201) and the extrusion plate (202); and the positioning grooves (702) are evenly distributed at the lower ends of the jig plate (201) and the extrusion plate (202).

3. A new graphite fixture for diffusion welding of a temperature-homing plate according to claim 2, characterized in that: A first groove (12) and a second groove (13) are respectively formed at opposite ends of the top plate (1) and the base (3); the first groove (12) and the second groove (13) are respectively evenly distributed on the top plate (1) and the base (3); the lower end of the welding jig (2) is located in the second groove (13) and the upper end is located in the first groove (12).

4. The novel graphite fixture for diffusion welding of a temperature-homing plate according to claim 3 is characterized by: The connecting assembly (4) comprises a connecting pin (401) and a nut (402); the upper end of the base (3) is evenly provided with a threaded groove (8); the lower end of the connecting pin (401) is threadedly connected in the threaded groove (8); the top plate (1) is evenly provided with a through groove (9); the upper end of the connecting pin (401) passes through the through groove (9) and is threadedly connected to the nut (402).

5. The novel graphite fixture for diffusion welding of a temperature-homing plate according to claim 4 is characterized by: The first groove (12), the second groove (13) and the welding jig (2) are all provided with rounded corners (10).

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