CN215356684U

CN215356684U - Diffusion welding tool

Info

Publication number: CN215356684U
Application number: CN202121808968.9U
Authority: CN
Inventors: 陈晓光; 牛田星; 郭世德; 马广超; 王涛; 胡天阔
Original assignee: Hebei Yutian Material Technology Co ltd
Current assignee: Hebei Yutian Material Technology Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-31
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a diffusion welding tool, which comprises a bottom plate, an upper pressure head and one or more sets of small welding block assemblies, wherein: set up square groove on the bottom plate, square groove is provided with open-top, it can match the lid to go up the pressure head and fit open-top, the welding fritter subassembly is located in the square groove, the extrusion of welding fritter subassembly in the x axle of horizontal direction and/or y axle direction is by welded workpiece, and each set of welding fritter subassembly includes a long columnar briquetting and two long columnar sliders, and two sliders are located respectively in each set of welding fritter subassembly the briquetting both sides, and through inclined plane cooperation contact between slider and the briquetting. This diffusion welding frock can assist and weld the face of weld that is on a parallel with the pressure direction, makes vacuum diffusion welding realize welding first face of weld and second face of weld simultaneously, enlarges the welding range that vacuum diffusion welded, increases the structural diversity by the welding workpiece.

Description

Diffusion welding tool

Technical Field

The utility model belongs to the technical field of tool fixtures, and particularly relates to a diffusion welding tool.

Background

The welding mode commonly used at present is friction stir welding, fixes the battery frame bottom plate on the welding tool platform through welding clamping device, and after the welding of front, need the artifical battery frame bottom plate that overturns to carry out the back welding. The manual turnover is time-consuming and labor-consuming, the workpieces are easy to be damaged or scratched, and the welding efficiency and the welding quality of the workpieces are reduced.

The vacuum diffusion welding is a solid phase bonding process which heats and pressurizes a welding part to enable the contact surface of a workpiece to reach the interatomic distance and performs interatomic diffusion within a certain time. However, the pressure of the vacuum welding equipment is in the vertical direction, and only the welding surface workpiece perpendicular to the pressure direction can be welded, but not the welding surface workpiece parallel to the pressure direction, so that the vacuum diffusion welding process can only weld the workpiece with a specific structure, the structural diversity of parts is limited, and the welding range of the vacuum diffusion welding is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problem of limitation of vacuum diffusion welding in the prior art, and provides a diffusion welding tool which can assist in welding a welding surface parallel to a pressure direction, so that vacuum diffusion welding can be realized by simultaneously welding a first welding surface a and a second welding surface b, the welding range of the vacuum diffusion welding is expanded, and the structural diversity of a welded workpiece is increased.

The utility model is realized by the following technical scheme:

the utility model provides a diffusion welding frock, its characterized in that includes the bottom plate, goes up pressure head and one set or many sets of welding fritter subassemblies, wherein: the bottom plate is provided with a square groove, the square groove is provided with a top opening, the upper pressure head is matched with the top opening in a covering mode, the welding small block assemblies are located in the square groove, each set of welding small block assembly comprises a long columnar pressing block and two long columnar sliding blocks, the two sliding blocks in each set of welding small block assembly are located on two sides of the pressing block respectively, and the sliding blocks are in contact with the pressing block in a matched mode through inclined planes.

In the technical scheme, a side opening is arranged on one side surface of the square groove and is covered by a side pressure head in a matching way; the welding small block assembly presses the welded workpiece in the y-axis direction, and the side pressure head and the inner wall of the square groove press the welded workpiece in the x-axis direction.

In the technical scheme, the periphery of the square groove is sealed, the two sets of the small welding block assemblies extrude the welded workpiece in the x axis, the other two sets of the small welding block assemblies extrude the welded workpiece in the y axis, and the four sets of the small welding block assemblies are respectively placed on the periphery of the welded workpiece in a pairwise opposite mode.

In the technical scheme, the bottom plate and the upper pressure head are of cuboid structures, the side pressure head is of a square column structure, the side surface of the side pressure head completely covers the side surface opening, and the upper pressure head completely covers the top opening; the pressing block structure is a cylindrical body with an isosceles trapezoid-shaped cross section, and the sliding block structure is a cylindrical body with a right-angle trapezoid-shaped cross section.

In the technical scheme, the two sets of the small welding block assemblies are respectively arranged on two sides of the welded workpiece arranged in the square groove in the y-axis direction, and the side openings are arranged on one side of the welded workpiece parallel to the y-axis.

In the technical scheme, the width of the bottom plate is the same as that of the upper pressure head, or the sum of the width of the bottom plate and the width of the upper pressure head and the width of the side pressure head is the same.

In the technical scheme, the heights of the pressing block and the sliding block are equal to the depth of the square groove.

In the technical scheme, the bottom plate, the upper pressure head, the side pressure head, the pressing block and the sliding block are all made of stainless steel.

In the above technical scheme, the edges of the inclined planes of the press block and the slide block which are in matched contact are both in a rounded structure.

In the above technical scheme, a first included angle formed by the inclined plane of the sliding block and the horizontal plane is equal to a second included angle formed by the inclined plane of the pressing block and the horizontal plane, and both the first included angle and the second included angle are 64.43 degrees.

Compared with the prior art, the utility model has the advantages and beneficial effects that:

1. according to the utility model, through the ingenious design of the structure, the welding small block assembly is utilized, the vertical pressure applied to the welding small block assembly by the vacuum diffusion welding equipment is converted into the horizontal pressure, and the welding surface b parallel to the pressure direction is assisted to be welded, so that the vacuum diffusion welding can be realized to weld the first welding surface a and the second welding surface b at the same time, the welding range of the vacuum diffusion welding equipment is expanded, and the structural diversity of the welded workpiece is increased.

2. The included angle between the inclined plane of the small block assembly and the horizontal plane is 64.43 degrees, so that the downward deformation of the pressing block is equal to the movement amount or deformation amount of the sliding block towards two ends; vertical pressure applied to the welding small block assembly by the vacuum diffusion welding equipment can be converted into horizontal pressure in an equal amount, and welding interface quality is improved.

3. The utility model has simple structure, easy operation and convenient disassembly. The formed welded interface has no welding defects such as cracks, air holes and the like; the air tightness test result shows that the workpiece has no adverse phenomena of leakage, deformation, bulge and the like, and the air tightness performance is qualified; the shear strength of the welded interface is high.

Drawings

FIG. 1 is a schematic view of a diffusion welding tooling assembly (without the side indenter).

Fig. 2 is a schematic view of a diffusion welding tooling assembly (including a side indenter).

Fig. 3 is a schematic diagram of stress of a diffusion welding tool in the assembling/welding process.

Wherein: 1-groove, 2-upper pressing head, 3-side pressing head, 4-pressing block, 5-sliding block, 6-welded workpiece, 7-square groove, 8-top opening, 9-side opening, a-first welding surface, b-second welding surface, beta-first included angle and gamma-second included angle.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.

Example 1

The utility model provides a diffusion welding frock, includes bottom plate 1, assists in the vertical direction to exert the last pressure head 2 of pressure and one set or more sets assist in the horizontal direction to exert the welding fritter subassembly of pressure for by welding work piece 6, wherein: the conversion of pressure direction can be realized to the welding fritter subassembly, and when going up pressure head 2 extrusion down, the welding fritter subassembly is the ascending pressure of pressure conversion of vertical side for the ascending pressure of horizontal direction to the realization is to pressure of exerting pressure simultaneously to 2 direction of motion of pressure head or two welding faces that are on a parallel with 2 direction of motion of pressure head on the perpendicular to. Set up square groove 7 on the bottom plate 1, square groove 7 is provided with open-top 8, it can match the lid to go up pressure head 2 fits open-top 8, the welding fritter subassembly is located in square groove 7, the extrusion of welding fritter subassembly in the x axle of horizontal direction and/or y axle direction is by welded workpiece 6, and each set of welding fritter subassembly includes long columnar briquetting 4 and two long columnar slider 5, and two slider 5 are located respectively in each set of welding fritter subassembly briquetting 4 both sides, and through inclined plane cooperation contact between slider 5 and the briquetting 4.

When the welding small block assembly presses the workpiece 6 to be welded only in the y-axis direction, as shown in fig. 1, a side surface of the square groove 7 parallel to the y-axis is provided with a side opening 9, the side opening 9 is matched and covered by the side pressure head 3, the welding small block assembly presses the workpiece 6 to be welded in the y-axis direction, and the side pressure head 3 and the inner wall of the square groove 7 press the workpiece 6 to be welded in the x-axis direction.

Or adopting other implementation modes, the periphery of the square groove 7 is sealed, the welded workpiece 6 is extruded on the x axis by using two sets of welding small block assemblies, the welded workpiece 6 is extruded on the y axis by using the other two sets of welding small block assemblies, and the four sets of welding small block assemblies are respectively placed on the periphery of the welded workpiece 6 in a pairwise opposite mode.

The bottom plate 1 and the upper pressure head 2 are of cuboid structures, the side pressure head 3 is of a square column structure, the side surface of the side pressure head 3 completely covers the side surface opening 9, and the upper pressure head 2 completely covers the top opening 8; the pressing block 4 is a cylindrical body with an isosceles trapezoid-shaped cross section, and the sliding block 5 is a cylindrical body with a right-angle trapezoid-shaped cross section.

The assembly method of the diffusion welding tool shown in fig. 1 specifically comprises the following steps:

step 1, firstly, a workpiece 6 to be welded is placed in the square groove 7; then, the slide blocks 5 are placed around the welded workpiece 6 in a group of two as required, the slide blocks can be arranged and placed in the x-axis and/or y-axis direction, and the wider plane of each slide block 5 is in contact with the bottom surface of the square groove 7; finally, the pressing blocks 4 are correspondingly placed between each group of sliding blocks 5 one by one; specifically, the pressing block 4 is placed with the narrower plane facing downwards and the wider plane facing upwards; the design size is adjusted, so that the sliding blocks 5 on the two sides have a certain extrusion effect on the pressing block 4 in the state, and the narrower plane of the pressing block 4 can not be in complete contact with the bottom surface of the square groove 7;

step 2, the upper pressure head 2 is matched and covered on the top opening 8, and pressure is applied downwards through the upper pressure head 2, so that the top surfaces of the pressing block 4, the sliding block 5 and the welded workpiece 6 are in the same horizontal plane;

step 3, the side pressure head 3 is matched and covered on the side opening 9, and the assembly is completed; and putting the assembled workpiece 6 to be welded and the diffusion welding tool into vacuum diffusion welding equipment together for welding. The vacuum diffusion welding apparatus applies a vertical pressure to the upper ram 2, and the upper ram 2 applies a pressure to the first bonding surface a perpendicular to the vertical pressure direction. Simultaneously, this vertical pressure can extrude welding fritter subassembly, the inclined plane that welding fritter subassembly contacted through the cooperation turns into horizontal pressure with vertical pressure, and this welding fritter subassembly can exert pressure rather than vertically second face of weld b, goes up pressure head 2 and welding fritter subassembly and assists first face of weld an and second face of weld b simultaneously and welds.

And carrying out air tightness test on the prepared welding interface, wherein the test condition is 3MPa, and the pressure maintaining time is 60 min. After the airtight test, the electronic packaging shell has no bad phenomena of leakage, deformation, bulge and the like, and the airtight performance is qualified.

Cutting the weld interface location to 10 × 10mm³The cube test block of (2), totally 3, wherein the welding seam interface is located the middle part of the cube test block. The universal stretching shearing machine performs a shearing test on the cube test block, the shearing strength is 95.8MPa and 89.5 percent of that of the high-silicon aluminum alloy, and the shearing strength is high.

And grinding and polishing the section of the welding seam interface, and observing the appearance of the welding seam position by a metallographic microscope. And the metallographic result shows that the welding seam interface has no welding defects such as cracks, pores and the like.

Example 2

Two sets of the small welding block assemblies are arranged and are respectively arranged at two sides of the workpiece 6 to be welded in the y-axis direction, and the side opening 9 is arranged at one side of the workpiece 6 to be welded, which is parallel to the y-axis, as shown in fig. 1.

As shown in fig. 1, the bottom plate 1 has the same width as the upper ram 2. Alternatively, as shown in fig. 2, the width of the bottom plate 1 is the same as the sum of the width of the upper ram 2 and the width of the side rams 3. The heights of the pressing block 4 and the sliding block 5 are equal to the depth of the square groove 7, and the heights are the total thickness of the welded workpiece 6 minus the compression amount of the welded workpiece 6 during welding. Preferably, the specific size of the diffusion welding tool can be designed and adjusted according to the size of the workpiece 6 to be welded; the length and width of the square groove 7 are the length and width of the welded workpiece 6 plus the width of the welded small block assembly minus the compression amount of the welded workpiece 6 in a natural fit state;

the bottom plate 1, the upper pressure head 2, the side pressure heads 3, the pressing block 4 and the sliding block 5 are all made of stainless steel. The edge of the inclined plane of the pressing block 4 and the sliding block 5 in matched contact is of a rounded corner structure, and the pressing block 4 and the sliding block 5 cannot be damaged or scratched when sliding relatively.

Example 3

In order to enable the vertical deformation of the welded small block assembly to be equal to the horizontal displacement or deformation, a first included angle beta formed by the inclined plane of the sliding block 5 and the horizontal plane is equal to a second included angle gamma formed by the inclined plane of the pressing block 4 and the horizontal plane, and the first included angle beta and the second included angle gamma are 64.43 degrees. When the welded small block assembly generates 2 unit deformation quantities downwards, the welded small block assembly can respectively generate one unit deformation quantity or displacement quantity towards two sides, namely the vertical deformation quantity and the horizontal deformation quantity or displacement quantity are equal.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The utility model has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the utility model fall within the scope of the utility model.

Claims

1. The utility model provides a diffusion welding frock, its characterized in that includes bottom plate (1), assists last pressure head (2) and one set or more sets of welding fritter subassembly of exerting pressure for welded workpiece (6) in the horizontal direction for exerting pressure for welded workpiece (6) in vertical direction, wherein:

set up square groove (7) on bottom plate (1), square groove (7) are provided with open-top (8), it fits to go up pressure head (2) can match the lid open-top (8) extrude downwards and are located welded work piece (6) in square groove (7), the welding fritter subassembly is located in square groove (7), the welding fritter subassembly is extruded by welded work piece (6) in the x axle of horizontal direction and/or y axle direction, and each set of welding fritter subassembly includes long columnar briquetting (4) and two long columnar slider (5), and two slider (5) are located respectively in each set of welding fritter subassembly briquetting (4) both sides, and contact through the inclined plane cooperation between slider (5)5 and briquetting (4).

2. The diffusion welding tool according to claim 1, wherein a side opening (9) is formed in one side face of the square groove (7), and the side opening (9) is matched and covered by the side pressure head (3); the two sets of small welding block assemblies extrude the welded workpiece (6) in the y-axis direction, and the side pressure heads (3) and the inner walls of the square grooves (7) extrude the welded workpiece (6) in the x-axis direction.

3. The diffusion welding tool according to claim 1, wherein the periphery of the square groove (7) is closed, two sets of the small welding block assemblies extrude the welded workpiece (6) in the x axis, the other two sets of the small welding block assemblies extrude the welded workpiece (6) in the y axis, and the four sets of the small welding block assemblies are respectively placed on the periphery of the welded workpiece (6) in a pairwise opposite mode.

4. A diffusion welding tool according to claim 2, characterized in that the bottom plate (1) and the upper ram (2) are of rectangular parallelepiped configuration, the side ram (3) is of square cylindrical configuration, the side of the side ram (3) completely covers the side opening (9), and the upper ram (2) completely covers the top opening (8).

5. The diffusion welding tool according to claim 1, wherein the pressing block (4) is a cylindrical body with an isosceles trapezoid-shaped cross section, and the sliding block (5) is a cylindrical body with a right trapezoid-shaped cross section.

6. The diffusion welding tool according to claim 2, characterized in that the width of the base plate (1) is the same as the width of the upper pressure head (2), or the width of the base plate (1) is the same as the sum of the width of the upper pressure head (2) and the width of the side pressure head (3).

7. The diffusion welding tool according to claim 1, wherein the height of the pressing block (4) and the height of the sliding block (5) are equal to the depth of the square groove (7).

8. The diffusion welding tool according to claim 2, wherein the bottom plate (1), the upper pressing head (2), the side pressing heads (3), the pressing block (4) and the sliding block (5) are all made of stainless steel.

9. The diffusion welding tool according to claim 1, wherein the edges of the inclined planes of the pressing block (4) and the sliding block (5) which are in fit contact with each other are of a rounded structure.

10. The diffusion welding tool according to claim 1, wherein a first included angle (β) formed by the inclined surface of the sliding block (5) and the horizontal plane is equal to a second included angle (γ) formed by the inclined surface of the pressing block (4) and the horizontal plane, and the first included angle and the second included angle are 64.43 degrees.