Welding tool device
By squeezing the pad with elastic parts in the welding fixture, the problem of uneven plate body during the welding of the runner plate assembly is solved, and the welding quality and strength are improved.
Patent Information
- Application Number
- CN202421651421.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-07-12
AI Technical Summary
During the welding process of the runner plate assembly of new energy vehicles, the welding fit is poor due to the unevenness of the plate body, which affects the welding quality.
A welding tooling device is used, including a first pressure plate assembly, a second pressure plate assembly, a first elastic member and a pad. Through the elastic squeezing action of the first elastic member, the pad can provide elastic force to the workpiece, thereby improving the fit between the plates of the workpiece, thereby improving the welding strength and sealing performance.
The welding quality of the flow channel plate assembly is improved, and the welding strength and sealing performance are enhanced.
Smart Images
Figure CN223313292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of assembly or equipment tooling, in particular to a welding tooling device. Background Art
[0002] The thermal management integrated module of new energy vehicles includes a flow channel plate assembly.
[0003] In the related art, the flow channel plate assembly is usually fixed by welding two plates. However, due to the unevenness of the plates, the welding fit between the two plates is poor, which affects the welding quality. Utility Model Content
[0004] Based on this, it is necessary to provide a welding tooling device to address the above problems, which can improve the fit between the plates of the workpiece.
[0005] The technical solutions adopted in this technical solution are as follows:
[0006] A welding tool device comprises a first pressure plate assembly, a second pressure plate assembly, a first elastic member and a pad, the first pressure plate assembly and the second pressure plate assembly are spaced apart, the pad is located between the first pressure plate assembly and the second pressure plate assembly, the welding tool device has a accommodating space that can accommodate a workpiece, one end of the first elastic member abuts against the first pressure plate assembly, the other end of the first elastic member abuts against the pad, the first elastic member can elastically squeeze the pad toward the direction of the second pressure plate assembly, or one end of the first elastic member abuts against the second pressure plate assembly, the other end of the first elastic member abuts against the pad, and the first elastic member can squeeze the pad toward the direction of the first pressure plate assembly.
[0007] According to the welding tooling device provided by the technical solution of the present application, when one end of the first elastic member abuts against the first pressure plate assembly and the other end of the first elastic member abuts against the pad, the first elastic member can elastically squeeze the pad toward the second pressure plate assembly. When one end of the first elastic member abuts against the second pressure plate assembly and the other end of the first elastic member abuts against the pad, the first elastic member can squeeze the pad toward the first pressure plate assembly. In this way, the pad can provide elastic force to the workpiece, so that the pad can squeeze the workpiece, so that the degree of fit between the two plate bodies of the workpiece is higher, thereby improving the welding strength of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of the welding tooling device provided by this application;
[0009] Figure 2 yes Figure 1 A top view of the welding fixture;
[0010] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA;
[0011] Figure 4 yes Figure 1 A schematic cross-sectional view of the welding fixture from the first perspective;
[0012] Figure 5 yes Figure 1 A schematic cross-sectional view of the second perspective of the welding fixture;
[0013] Figure 6 yes Figure 1 A schematic structural diagram of the welding fixture device with the first pressing plate assembly removed;
[0014] Figure 7 yes Figure 6 Exploded view of the middle pad, runner plate, and second pressure plate assembly;
[0015] Figure 8 yes Figure 6 The structural diagram without the pressing block;
[0016] Figure 9 yes Figure 1 A magnified view of the welding fixture device;
[0017] Figure 10 yes Figure 1 Enlarged view of point B in the welding fixture.
[0018] Description of main component symbols:
[0019] 100. Welding fixture; 101. Accommodating space; 10. Flow channel plate; 11. First plate; 12. Second plate; 13. Joint; 20. First pressure plate assembly; 21. First plate member; 211. Assembly groove; 212. Slide groove; 213. First groove; 22. Second plate member; 221. Second groove; 222. First limiting groove; 2221. First side wall; 2222. First guide wall; 223. First wall; 23. Second elastic member; 24. Press block; 25. Bottom plate; 26. Second limiting seat ;30. Second pressure plate assembly;31. Base plate;311. Through hole;32. First positioning member;33. Second positioning member;34. Second limiting groove;341. Second side wall;342. Second guide wall;35. Second wall;40. Extrusion assembly;41. Pull rod;411. Main body;412. First extension portion;413. First abutting portion;414. Second extension portion;415. Second abutting portion;42. First elastic member;50. Pad;51. Pressing portion;52. First limiting seat;53. Avoidance hole.
[0020] The above description of the main component symbols is combined with the accompanying drawings and specific technical solutions to further illustrate the present invention in detail. DETAILED DESCRIPTION
[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the specific technical solutions of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific technical solutions disclosed below.
[0022] The present application will be further described below with reference to the accompanying drawings and specific technical solutions:
[0023] Figures 1 to 10 The figure shows a technical solution of a welding fixture device 100 . The welding fixture device 100 can press-fit the flow channel plate 10 . By restricting the flow channel plate 10 , the flow channel plate 10 can be welded smoothly.
[0024] In this technical solution, the welding tooling device 100 is used to fix the flow channel plate 10 to perform welding processing on the flow channel plate 10. The flow channel plate 10 includes a first plate body 11, a second plate body 12 and a joint 13. The first plate body 11 abuts against the second plate body 12, the joint 13 abuts against the first plate body 11, and the second plate body 12 is fixedly connected to the second pressure plate assembly 30.
[0025] The welding fixture device 100 includes a first pressure plate assembly 20, a second pressure plate assembly 30, a first elastic member 42 and a pad 50. The first pressure plate assembly 20 and the second pressure plate assembly 30 are spaced apart, and the pad 50 is located between the first pressure plate assembly 20 and the second pressure plate assembly 30. The welding fixture device 100 has a receiving space 101 capable of accommodating a workpiece. One end of the first elastic member 42 abuts against the first pressure plate assembly 20, and the other end of the first elastic member 42 abuts against the pad 50. The first elastic member 42 can elastically press the pad 50 toward the second pressure plate assembly 30, or one end of the first elastic member 42 abuts against the second pressure plate assembly 30, and the other end of the first elastic member 42 abuts against the pad 50. The first elastic member 42 can press the pad 50 toward the first pressure plate assembly 20. The workpiece in this technical solution is the flow channel plate 10. It should be noted that, since one end of the first elastic member 42 abuts against the first pressure plate assembly 20 and the other end of the first elastic member 42 abuts against the pad 50, the first elastic member 42 can elastically squeeze the pad 50 toward the direction of the second pressure plate assembly 30. Since one end of the first elastic member 42 abuts against the second pressure plate assembly 30 and the other end of the first elastic member 42 abuts against the pad 50, the first elastic member 42 can squeeze the pad 50 toward the direction of the first pressure plate assembly 20. In this way, the pad can provide elastic force to the workpiece, so that the pad 50 can squeeze the workpiece, so that the degree of fit between the first plate body 11 and the second plate body 12 is higher, thereby improving the welding quality of the product. The welding quality here can be the strength of the welding or the sealing performance after welding.
[0026] The welding fixture device 100 includes an extrusion assembly 40, which includes a pull rod 41 and a first elastic member 42. One end of the pull rod 41 is limitedly connected to the first pressure plate assembly 20, and the other end of the pull rod 41 is limitedly connected to the second pressure plate assembly 30. In this technical solution, one end of the first elastic member 42 abuts the first pressure plate assembly 20, and the other end of the first elastic member 42 abuts the pad 50. The first elastic member 42 can elastically squeeze the pad 50 toward the second pressure plate assembly 30. Specifically, one end of the first elastic member 42 abuts the first pressure plate assembly 20, and the other end of the first elastic member 42 abuts the pad 50. The end of the pad 50 closest to the second pressure plate assembly 30 abuts the flow channel plate 10.
[0027] It should be noted that, along the height direction of the welding fixture device 100, as shown in FIG. Figure 1 As shown in the Z direction, the first plate 11 is close to the first pressure plate assembly 20 relative to the second plate 12, and the welding fixture device 100 can limit the first plate 11 and the second plate 12, and can smoothly weld the first plate 11 and the second plate 12 together to form the flow channel plate 10. In this technical solution, the number of the tie rods 41 is multiple, along the width direction of the welding fixture device 100, such as Figure 1As shown in the Y direction, the two pull rods 41 are located on both sides of the first pressure plate, which can enhance the extrusion force of the flow channel plate 10 by the first pressure plate assembly 20 and the second pressure plate assembly 30, and the extrusion process is more stable; along the length direction of the welding fixture device 100, as shown in FIG. Figure 1 As shown in the X direction in FIG, located on one side of the first platen assembly 20, two tie rods 41 are arranged at intervals, and located on the other side of the first platen assembly 20, two tie rods 41 are arranged at intervals, with each two tie rods 41 corresponding to a second platen member. This technical solution uses the four tie rods 41 structure to restrain the first and second platen assemblies 20 and 30 in the width direction of the welding fixture 100, further improving the squeezing effect of the first and second platen assemblies 20 and 30 on the first and second platen bodies 11 and 12.
[0028] The terms "first" and "second" in this specification are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0029] It should be noted that the directional words such as up, down, left, right, front, and back mentioned in this specification are based on the directions in the drawings of the specification. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this application.
[0030] In the present technical solution, the flow channel plate 10 includes a first plate body 11 and a second plate body 12, the first plate body 11 and the second plate body 12 are abutted, one end of the pull rod 41 is connected to the first pressure plate assembly 20, and the other end of the pull rod 41 is abutted against the second pressure plate assembly 30. The pull rod 41 tightens the first pressure plate assembly 20 and the second pressure plate assembly 30 in the height direction of the welding fixture device 100, so that the first pressure plate assembly 20 can squeeze the first plate body 11 downward, so that the second pressure plate assembly 30 can squeeze the second plate body 12 upward. Due to one end of the first elastic member 42 The first elastic member 42 abuts against the first pressure plate assembly 20, the other end of the first elastic member 42 abuts against the pad 50, and the end of the pad 50 close to the second pressure plate assembly 30 abuts against the flow channel plate 10. In this way, the first elastic member 42 can press the pad 50 toward the flow channel plate 10, and the pad 50 can press the first plate body 11 toward the second plate body 12. The pad 50 presses the first plate body 11 downward, and the second pressure plate assembly 30 presses the second plate body 12 upward, so that the first plate body 11 and the second plate body 12 are more closely fitted, which can improve the welding quality of the flow channel plate 10 structure. Specifically, the first elastic member 42 can be a spring structure or other elastic structure.
[0031] Combine Figures 1 to 5 As shown, the first pressure plate assembly 20 includes a first plate 21, a second plate 22, and a second elastic member 23. At least a portion of the pull rod 41 is in a clearance fit or position-limited fit with the first plate 21. One end of the pull rod 41 is position-limitedly connected to the second plate 22. One end of the second elastic member 23 abuts the first plate 21, and the other end of the second elastic member 23 abuts the second plate 22. It should be noted that along the length direction of the welding fixture device 100, the length of the first plate 21 is greater than the length of the second plate 22. One end of the second elastic member 23 abuts against the first plate 21, and the other end of the second elastic member 23 abuts against the second plate 22. In this application, the second elastic member 23 is squeezed from top to bottom by the cooperation of the pull rod 41 and the second pressure plate. After being squeezed, the second elastic member 23 squeezes the first pressure plate downward. Then, the first plate 21 squeezes the first elastic member 42 under the elastic squeezing of the second elastic member 23, so that the first elastic member 42 is in a compressed state. The first elastic member 42 elastically squeezes the pad 50 downward, so that the first plate 11 and the second plate 12 are more closely fitted. In this application, the first elastic member 42 elastically squeezes the pad 50 downward, and then the pad 50 presses the first plate 11 and the second plate 12 tightly, so that the first plate 11 and the second plate 12 are more closely fitted. Then, the first plate 11 and the second plate 12 are welded together by furnace welding, which can improve the welding quality of the first plate 11 and the second plate 12. Among them, the second elastic member 23 can be a spring structure or other elastic structure.
[0032] Combine Figure 6 and Figure 7 As shown, the first pressure plate assembly 20 also includes at least two pressure blocks 24, one end of the pressure block 24 is fixedly connected to the first plate 21 or is an integral structure, and the other end of the pressure block 24 abuts against the joint 13; along the height direction of the welding fixture device 100. It should be noted that one end of the pressure block 24 is fixedly connected to the bottom wall of the first plate body 11 or is an integral structure, and the other end of the pressure block 24 abuts against the interface, which is used to press the interface tightly against the first plate body 11 through the pressure block 24. Along the height direction of the welding fixture device 100, the height of each pressure block 24 protruding downward from the first pressure plate is consistent. Since there are multiple joints 13 and the heights of the multiple joints 13 are inconsistent, the pressure block 24 structure can achieve extrusion of different joints 13 through a whole first pressure plate, and the extrusion process is more uniform.
[0033] Please refer to Figure 4 One end of the first elastic member 42 abuts against the first pressure plate assembly 20, and the other end of the first elastic member 42 abuts against the pad 50. The first elastic member 42 can elastically squeeze the pad 50 in the direction of the second pressure plate assembly 30. The wall surface of the pad 50 facing the second pressure plate assembly 30 is defined as the pressing portion 51, and the flatness of at least part of the pressing portion 51 is less than or equal to 0.1. The pressing portion 51 of the pad 50 is defined as being in contact with the first plate body 11, and the flatness of the pressing portion 51 is less than the flatness of the first plate body 11. It should be noted that the flatness of the pressing portion 51 is less than the flatness of the first plate body 11, which means that the pressing portion 51 is flatter and can make the first plate body 11 and the second plate body 12 fit more closely together by extrusion. Specifically, in the present technical solution, at least one of the clamping portion 51 of the pad 50, the first plate 21 and the pressure block 24 includes a graphite pressure plate, wherein the flatness of at least part of the graphite pressure plate is less than or equal to 0.1, the first plate body 11 is made of stainless steel, and the flatness of the first plate body 11 is 0.2. In addition, after multiple welding processes in the furnace, the flatness of the first plate body 11 rises to between 0.3 and 0.5, and the use of a graphite pressure plate has a better pressing effect.
[0034] Please refer to Figure 5The welding fixture device 100 further includes a first limiting seat 52, which protrudes from the backing plate 50 toward the first plate 21. The first plate 21 has a first groove 213. At least a portion of one end of the first elastic member 42 is sleeved on the outer peripheral wall of the first limiting seat 52, and at least a portion of the other end of the first elastic member 42 is located in the first groove 213. It should be noted that at least a portion of the lower end of the first elastic member 42 is sleeved on the outer peripheral wall of the first limiting seat 52, the diameter of the first elastic member 42 is larger than the diameter of the first limiting seat 52, and at least a portion of the upper end of the first elastic member 42 is located in the first groove 213. The first limiting seat 52 and the first groove 213 can play a certain limiting role on the first elastic member 42, which can reduce the deviation of the first elastic member 42 during the extrusion process.
[0035] Please refer to Figure 4 The first pressure plate assembly 20 also includes a base plate 25 and a second limiting seat 26. The second limiting seat 26 protrudes from the base plate 25 toward the second plate 22. The first plate 21 has a mounting groove 211, and the second plate 22 has a second groove 221. At least a portion of the base plate 25 is located in the mounting groove 211. One end of the second elastic member 23 is sleeved on the outer peripheral wall of the second limiting seat 26, and at least a portion of the other end of the second elastic member 23 is located in the second groove 221. It should be noted that at least a portion of the lower end of the second elastic member 23 is sleeved on the outer peripheral wall of the second limiting seat 26. The diameter of the second elastic member 23 is larger than the diameter of the second limiting seat 26. At least a portion of the upper end of the second elastic member 23 is located in the second groove 221. This can reduce the deviation of the second elastic member 23 during the extrusion process.
[0036] Please refer to Figure 3 、 Figure 5 and Figure 6The second pressure plate assembly 30 includes a base plate 31, a first positioning member 32, and a second positioning member 33. The first positioning member 32 and the second positioning member 33 are both fixedly connected to the base plate 31. The first positioning member 32 and the second positioning member 33 are spaced apart along the length direction of the base plate 31. Along the width direction of the base plate 31, the first positioning member 32 and the second positioning member 33 abut against one end of the first plate body 11. The base plate 31 has a through hole 311, and at least part of the second plate body 12 is located in the through hole 311. The end of the flow channel plate 10 away from the first positioning member 32 abuts against the wall forming the through hole 311. It should be noted that the base plate 31 has a through hole 311, and at least part of the second plate body 12 is located in the through hole 311. The through hole 311 plays a certain role in limiting the second plate body 12. The first positioning member 32 and the second positioning member 33 are arranged at intervals along the length direction of the welding tooling device 100, and the first positioning member 32 and the second positioning member 33 abut against one end of the second plate body 12, and the end of the second plate body 12 away from the first positioning member 32 and the second positioning member 33 abuts against the wall forming the through hole 311, so that the first positioning member 32, the second positioning member 33 and the wall forming the through hole 311 can limit the second plate body 12 at both ends of the width of the second plate body 12.
[0037] Please refer to Figure 6 and Figure 8 , the pad 50 has at least two avoidance holes 53, the number of the avoidance holes 53 is greater than or equal to the number of the pressing blocks 24, at least part of the joint 13 is located in the avoidance hole 53, and along the height direction of the welding fixture device 100, the height of the joint 13 is greater than the height of the wall forming the avoidance hole 53. It should be noted that the number of avoidance holes 53 in this application is set in a one-to-one correspondence with the number of the pressing blocks 24. Along the height direction of the welding fixture device 100, the height of the joint 13 is greater than the height of the avoidance hole 53, so that at least part of the joint 13 is located outside the avoidance hole 53. In this way, the pressing block 24 does not contact the pad 50 during the process of squeezing the joint 13, which can protect the pad 50 to a certain extent and make the pad 50 not easily crushed.
[0038] Combine Figure 1 、 Figure 9 and Figure 10As shown, the second plate 22 has a first limiting groove 222, the first plate 21 has a sliding groove 212, the second pressure plate assembly 30 has a second limiting groove 34, the pull rod 41 includes a main body 411, a first extension 412, a first abutting portion 413, a second extension 414 and a second abutting portion 415, at least part of the main body 411 is located in the sliding groove 212, at least part of the first extension 412 is located in the first limiting groove 222, at least part of the second extension 414 is located in the second limiting groove 34, the first abutting portion 413 abuts against an end face of the second plate 22 away from the first plate 21, and the second abutting portion 415 abuts against an end face of the second pressure plate assembly 30 away from the first pressure plate assembly 20. It should be noted that at least part of the main body 411 is located in the slide groove 212, and the main body 411 can slide up and down relative to the slide groove 212. The first abutting portion 413 abuts against an end face of the second plate 22 away from the first plate 21, and the second abutting portion 415 abuts against an end face of the second pressure plate assembly 30 away from the first pressure plate assembly 20. In this way, the pull rod 41 can pull the second plate 22 and the base plate 31, so that the second plate 22 can squeeze the second elastic member 23, and the second elastic member 23 elastically squeezes the first plate 21. The first plate 21 squeezes the first elastic member 42 downward under the elastic extrusion of the second elastic member 23, and the pad 50 is elastically extruded by the first elastic member 42, so that the first plate body 11 and the second plate body 12 fit tightly together.
[0039] The second plate 22 has a first wall 223, and the first limiting groove 222 is recessed from the first wall 223 toward the second elastic member 23. The wall forming the first limiting groove 222 includes a first side wall 2221 and a first guide wall 2222. Along the width direction of the second plate 22, the first guide wall 2222 expands and extends from the first side wall 2221 toward the first wall 223; the second pressure plate assembly 30 has a second wall 35, specifically, the base plate 31 has a second wall 35, and the second limiting groove 34 is recessed from the second wall 35 toward the pad 50. The wall forming the second limiting groove 34 includes a second side wall 341 and a second guide wall 342. Along the width direction of the second pressure plate assembly 30, the second guide wall 342 expands and extends from the second side wall 341 toward the second wall 35. It should be noted that, along the width direction of the second plate 22, the first guide wall surface 2222 extends from the first side wall 2221 toward the first wall surface 223 in an expanded manner. In this way, the first guide wall surface 2222 can play a certain guiding role, allowing the first extension portion 412 to be more conveniently placed in the first limiting groove 222. Similarly, the second guide wall surface 342 extends from the second side wall 341 toward the second wall surface 35 in an expanded manner, allowing the second extension portion 414 to be more conveniently placed in the second limiting groove 34.
[0040] It should be noted that the above technical solutions are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above technical solutions, ordinary technicians in this field should understand that technicians in the relevant technical field can still modify or replace the application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.
Claims
1. A welding tooling device, characterized in that: The welding tool device (100) comprises a first pressure plate assembly (20), a second pressure plate assembly (30), a first elastic member (42) and a pad (50), wherein the first pressure plate assembly (20) and the second pressure plate assembly (30) are spaced apart, and the pad (50) is located between the first pressure plate assembly (20) and the second pressure plate assembly (30); the welding tool device (100) has a receiving space (101) capable of accommodating a workpiece; one end of the first elastic member (42) abuts against the first pressure plate assembly (20), and the other end of the first elastic member (42) abuts against the pad (50); the first elastic member (42) can elastically squeeze the pad (50) toward the direction of the second pressure plate assembly (30); or one end of the first elastic member (42) abuts against the second pressure plate assembly (30), and the other end of the first elastic member (42) abuts against the pad (50); the first elastic member (42) can squeeze the pad (50) toward the direction of the first pressure plate assembly (20).
2. The welding fixture device according to claim 1, characterized in that: The welding tooling device (100) includes a pull rod (41), the first pressure plate assembly (20) includes a first plate (21), a second plate (22) and a second elastic member (23), the second pressure plate assembly (30) includes a base plate (31), one end of the pull rod (41) is limitedly connected to the second plate (22), the other end of the pull rod (41) is limitedly connected to the base plate (31), one end of the second elastic member (23) is in contact with the first plate (21), and the other end of the second elastic member (23) is in contact with the second plate (22).
3. The welding fixture device according to claim 2, characterized in that: The first pressure plate assembly (20) further includes at least two pressure blocks (24), one end of each pressure block (24) being fixedly connected to the first plate (21) or forming an integral structure; along the height direction of the welding fixture device (100), the height of each pressure block (24) is consistent.
4. The welding fixture device according to claim 3, characterized in that: At least one of the pad (50), the first plate (21) and the pressing block (24) comprises a graphite pressing plate.
5. The welding fixture device according to any one of claims 1 to 4, characterized in that: One end of the first elastic member (42) abuts against the first pressure plate assembly (20), and the other end of the first elastic member (42) abuts against the pad (50). The first elastic member (42) can elastically squeeze the pad (50) toward the second pressure plate assembly (30). The wall surface of the pad (50) facing the second pressure plate assembly (30) is defined as a clamping portion (51), and the flatness of at least part of the clamping portion (51) is less than or equal to 0.
1.
6. The welding fixture device according to any one of claims 2 to 4, characterized in that: The welding tooling device (100) further includes a first limit seat (52), the first limit seat (52) protruding from the backing plate (50) toward the first plate (21), the first plate (21) having a first groove (213), at least a portion of one end of the first elastic member (42) being sleeved on the outer peripheral wall of the first limit seat (52), and at least a portion of the other end of the first elastic member (42) being located in the first groove (213).
7. The welding fixture device according to any one of claims 2 to 4, characterized in that: The first pressure plate assembly (20) further includes a base plate (25) and a second limiting seat (26), wherein the second limiting seat (26) protrudes from the base plate (25) toward the second plate member (22), the first plate member (21) has an assembly groove (211), and the second plate member (22) has a second groove (221), at least a portion of the base plate (25) is located in the assembly groove (211), one end portion of the second elastic member (23) is sleeved on the outer peripheral wall of the second limiting seat (26), and at least a portion of the other end portion of the second elastic member (23) is located in the second groove (221).
8. The welding fixture device according to any one of claims 2 to 4, characterized in that: The second pressure plate assembly (30) includes a first positioning member (32) and a second positioning member (33), wherein the first positioning member (32) and the second positioning member (33) are both fixedly connected to the base plate (31), and the first positioning member (32) and the second positioning member (33) are arranged at intervals along the length direction of the base plate (31).
9. The welding fixture device according to any one of claims 2 to 4, characterized in that: The second plate (22) has a first limiting groove (222), the first plate (21) has a sliding groove (212), the second pressure plate assembly (30) has a second limiting groove (34), the pull rod (41) includes a main body (411), a first extension (412), a first abutting portion (413), a second extension (414) and a second abutting portion (415), at least part of the main body (411) is located in the sliding groove (212), at least part of the first extension (412) is located in the first limiting groove (222), at least part of the second extension (414) is located in the second limiting groove (34), the first abutting portion (413) abuts against an end face of the second plate (22) away from the first plate (21), and the second abutting portion (415) abuts against an end face of the second pressure plate assembly (30) away from the first pressure plate assembly (20).
10. The welding fixture device according to claim 9, characterized in that: The second plate member (22) has a first wall surface (223), the first limiting groove (222) is recessed from the first wall surface (223) toward the second elastic member (23), and the wall forming the first limiting groove (222) includes a first side wall (2221) and a first guide wall surface (2222), and along the width direction of the second plate member (22), the first guide wall surface (2222) expands and extends from the first side wall (2221) toward the first wall surface (223); the second pressure plate assembly (30) has a second wall surface (35), the second limiting groove (34) is recessed from the second wall surface (35) toward the pad (50), and the wall forming the second limiting groove (34) includes a second side wall (341) and a second guide wall surface (342), and along the width direction of the second pressure plate assembly (30), the second guide wall surface (342) expands and extends from the second side wall (341) toward the second wall surface (35).