Welding fixture and welding device

Abstract

The application provides a welding tool and a welding device, relates to the technical field of welding devices, and aims to solve the technical problem of virtual welding of electrical components. The welding tool is used for adjusting a welding press, and the welding tool comprises a tool main body, a universal part and a balancing part. A first side surface of the tool main body is used for being opposite to the welding press, and a second side surface of the tool main body is opposite to the first side surface. The universal part protrudes from the first side surface. The balancing part is connected with the second side surface, and the balancing part is provided with at least one balancing groove. The direction of the opening of the balancing groove is parallel to the second side surface, and the balancing groove penetrates through the balancing part in the direction parallel to the second side surface.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and in particular to a welding fixture and welding apparatus. Background Technology

[0002] In fields such as automotive electronics and industrial automation, the application of flexible printed circuit boards (FPCs) and printed circuit board assemblies (PCBAs) is increasing with the growing level of electronic integration. FPCs and PCBAs need to be connected via thermocompression welding to enable communication between them. Thermocompression welding applies pressure and heat to the welding areas of the FPC and PCBA using heated welding fixtures in a welding apparatus to ensure full contact of the solder joints.

[0003] Due to the gaps between the electrical components composed of FPC and PCBA, especially when soldering large FPC and PCBA with a length exceeding 40mm, cold solder joints and other issues are prone to occur at the gaps between the electrical components. Utility Model Content

[0004] In view of the above problems, this application provides a welding fixture and welding device that can solve the technical problem of incomplete soldering of electrical components.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a welding fixture for adjusting a welding press. The welding fixture includes a fixture body, a universal joint, and a balancing part. A first side of the fixture body is positioned opposite to the welding press, and a second side of the fixture body is opposite to the first side.

[0007] The universal joint protrudes from the first side and is located in the middle of the first side.

[0008] The balancing part is connected to the second side surface. The balancing part is provided with at least one balancing groove. The opening of the balancing groove is parallel to the second side surface. The balancing groove passes through the balancing part in a direction parallel to the second side surface.

[0009] In some embodiments of this application, multiple balancing grooves are provided, and the multiple balancing grooves are spaced apart along a direction perpendicular to the second side, and at least some of the balancing grooves have different orientations at their openings.

[0010] In some embodiments of this application, the plurality of balancing grooves includes a first balancing groove and a second balancing groove, wherein the orientation of the opening of the first balancing groove and the orientation of the opening of the second balancing groove are opposite.

[0011] In some embodiments of this application, the plurality of balancing grooves includes a third balancing groove and a fourth balancing groove, wherein the orientation of the groove opening of the third balancing groove and the orientation of the groove opening of the fourth balancing groove are opposite.

[0012] The openings of the first, second, third, and fourth balancing grooves are parallel to the four directions that are orthogonal to each other on the second side.

[0013] In some embodiments of this application, the balancing part includes a first balancing part and a second balancing part, and the first balancing part and the second balancing part are connected along a direction perpendicular to the second side surface;

[0014] The first and second balancing grooves are disposed in the first balancing section, and the third and fourth balancing grooves are disposed in the second balancing section.

[0015] In some embodiments of this application, the wall of the balancing groove is greater than or equal to the width of the balancing groove.

[0016] In some embodiments of this application, the cross-section of the bottom of the balancing groove is set to be arc-shaped, and the inner arc of the arc-shaped bottom of the groove faces the opening of the balancing groove.

[0017] In some embodiments of this application, the projection of the universal joint toward the first side is the first projection;

[0018] The area of ​​the first projection is greater than or equal to one-fifth of the area of ​​the first side and less than or equal to one-third of the area of ​​the first side.

[0019] In some embodiments of this application, the welding fixture is provided with a plurality of through holes along a direction perpendicular to the second side, and at least one through hole is used for heat dissipation.

[0020] Secondly, embodiments of this application provide a welding apparatus, including a welding press and a welding fixture, wherein the welding press and the welding fixture are detachably connected;

[0021] The welding fixture is provided with a mounting surface and a universal groove. The universal groove is recessed into the mounting surface and is designed to fit with the universal joint.

[0022] When the welding press is connected to the welding fixture, the first side faces the mounting surface, and the universal joint abuts against the universal groove.

[0023] This application provides a welding fixture that supports the welding fixture by having a universal joint protruding from the fixture body abut against different positions of a welding press. The universal joint adjusts the relative position of the welding press and the fixture body, allowing the welding press to tilt towards the gap side of the electrical component, ensuring that the welding press initially contacts the gap side of the electrical component. To ensure contact between the welding press and each welding position of the electrical component, the welding press continues to be pressed downwards under vertical pressure, increasing the force between the welding press and the gap side of the electrical component. This compensates for poor welding connections caused by gaps in the electrical component, thereby improving the stability and reliability of the electrical component connection. Simultaneously, the wall of the balance groove connected to the fixture body undergoes adaptive deformation, allowing the welding press to gradually contact each welding position of the electrical component, further enhancing the stability and reliability of the connection at each welding position.

[0024] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by these technical solutions as described above, other technical problems that this application can solve, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of one state of the welding fixture provided in the embodiments of this application;

[0027] Figure 2 A schematic diagram of another state of the welding fixture provided in the embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the welding fixture and welding press provided in the embodiments of this application before welding.

[0029] Figure 4 This is a schematic diagram of the welding fixture and welding press provided in the embodiments of this application during welding.

[0030] Figure 5 This is a structural schematic diagram of another state of the welding fixture provided in the embodiments of this application.

[0031] Figure label:

[0032] 100 - Welding press;

[0033] 200 - Welding fixture;

[0034] 210 - Tooling body; 210a - First side; 210b - Second side;

[0035] 220 - Universal Joint;

[0036] 230 - Balancing section; 2301 - First balancing section; 2302 - Second balancing section;

[0037] 231 - First balancing groove; 232 - Second balancing groove; 233 - Third balancing groove; 234 - Fourth balancing groove;

[0038] 240 - Through hole;

[0039] 241 - Heat dissipation hole; 242 - Fixing hole. Detailed Implementation

[0040] In related technologies, the application of flexible printed circuit boards (FPCs) and printed circuit board assemblies (PCBAs) is increasing in fields such as automotive electronics and industrial automation, as the level of electronification increases.

[0041] FPCs and PCBAs need to be connected via thermocompression welding to enable communication between them. Thermocompression welding applies pressure and heat to the welding areas of the FPC and PCBA using heated welding fixtures in a welding apparatus to ensure full contact of the solder joints.

[0042] Bending of the FPC or warping of the PCBA due to heat can cause gaps between the electrical components formed by the FPC and PCBA, especially when soldering large FPCs and PCBAs with a length exceeding 40mm. Poor contact and cold solder joints are prone to occur at these gaps.

[0043] To address the aforementioned problems, this application provides a welding fixture. The universal joint protruding from the fixture body abuts against different positions of the welding press, thus supporting the welding fixture. Adjusting the relative position of the welding press and the fixture body allows the welding press to tilt towards the gap side of the electrical component, ensuring that the welding press initially contacts the gap side of the electrical component. To ensure contact between the welding press and each welding position of the electrical component, the welding press continues to be pressed downwards under vertical pressure. This increases the force between the welding press and the gap side of the electrical component, compensating for poor welding connections caused by gaps in the electrical component, thereby improving the stability and reliability of the electrical component connection. Simultaneously, the wall of the balance groove connected to the fixture body undergoes adaptive deformation, allowing the welding press to gradually contact each welding position of the electrical component, further enhancing the stability and reliability of the connection at each welding position.

[0044] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] Reference Figure 1 and Figure 2 As shown, this application provides a welding apparatus. The welding apparatus is used for thermocompression welding of electrical components consisting of flexible printed circuit boards (FPCs) and printed circuit board assemblies (PCBAs), or for thermocompression welding of other electrical components.

[0046] The welding apparatus of this application is particularly suitable for large-size electrical components. The welding apparatus can ensure the pressure and temperature at each welding position of the electrical component during the welding process, and can avoid problems such as poor solder penetration and cold solder joints.

[0047] The welding apparatus includes a welding fixture 200. The welding fixture 200 can transmit the pressure required during the welding process to achieve the welding of electrical components.

[0048] For example, the welding fixture 200 can be made of a high-temperature resistant alloy (such as titanium alloy) so that the welding fixture 200 can withstand pressure and heat transferred by thermal conduction.

[0049] The welding apparatus includes a welding press 100. The welding press 100 applies pressure and temperature to the electrical components to perform thermocompression welding on the electrical components.

[0050] The welding fixture 200 includes a fixture body 210, which is used to connect with the welding press 100 and transmit pressure to the welding press 100.

[0051] For example, electrical components include PCBA and FPC, both of which are plate-shaped, and the welding fixture 100 is either plate-shaped or block-shaped. Therefore, the tooling body 210 can be configured as a pressure plate with a certain thickness to transmit pressure to the welding fixture 100, so that the PCBA and FPC can be bonded together to achieve connection.

[0052] The welding press and welding fixture 200 are detachably connected, which facilitates the adjustment of the relative angle between the welding press and welding fixture 200, allowing the welding press to fine-tune the pressure at various positions.

[0053] For example, the welding press has a threaded hole, and the welding fixture 200 has a through hole that matches the threaded hole. Fasteners such as bolts are screwed into the threaded hole through the through hole to make the welding press and the welding fixture 200 detachably connected.

[0054] Furthermore, the welding fixture is provided with a pressing surface and a mounting surface, which are arranged opposite to each other. The pressing surface is used to contact the electrical components, enabling the electrical components to be thermo-pressurized.

[0055] The tooling body 210 includes a first side 210a and a second side 210b facing away from each other. When the welding tooling 200 is connected to the welding press, the first side 210a faces the mounting surface. The second side 210b is used to connect the pressure transmission part.

[0056] The welding fixture 200 includes a universal joint 220, which protrudes from the first side surface 210a. The universal joint 220 is used to abut against the welding pressure fixture opposite to the first side surface 210a and plays a supporting role when the welding fixture 200 transmits pressure.

[0057] The welding fixture is provided with a universal groove, which is recessed in the mounting surface and is fitted with the universal part 220. That is, part of the universal part 220 is located in the universal groove, and through the contact between the universal part 220 and the universal groove, the universal groove can restrict part of the displacement of the universal part 220.

[0058] Specifically, the universal joint 220 is located at the middle position of the first side 210a, thereby enabling the welding fixture 200 to be adjusted to tilt slightly in various directions relative to the welding press.

[0059] In some possible implementations, the universal joint 220 can be configured as a hemisphere, and the universal groove can be configured as a hemispherical groove. Part of the hemisphere is located within the hemispherical groove, and the part of the hemisphere abuts against the hemispherical groove. Friction can be generated between the part of the hemisphere and the hemispherical groove to prevent the part of the hemisphere and the hemispherical groove from rotating relative to each other, thereby allowing the part of the hemisphere and the hemispherical groove to maintain their relative positions.

[0060] The projection of the universal joint 220 toward the first side surface 210a is called the first projection. By limiting the ratio of the area of ​​the first projection to the area of ​​the first side surface 210a, the universal joint 220 can be prevented from being too large or too small.

[0061] The area of ​​the first projection is greater than or equal to one-fifth of the area of ​​the first side 210a, and the universal joint 220 can provide sufficient support for the welding fixture. This can prevent the universal joint 220 from being too small relative to the fixture body 210 due to an insufficiently small projection area, thus preventing the universal joint 220 from being crushed under pressure.

[0062] The area of ​​the first projection is less than or equal to one-third of the area of ​​the first side 210a, to avoid the universal joint 220 becoming too large relative to the fixture body 210 due to an excessively large projection area. This prevents the universal joint 220 from being too large, thereby reducing the amount of material used in the welding fixture 200 and controlling the cost of the welding fixture 200.

[0063] For example, the area of ​​the first projection is one-quarter of the area of ​​the first side 210a. This avoids the universal joint 220 from being too heavy and also prevents the universal joint 220 from being crushed.

[0064] In some possible implementations, the universal joint 220 can be configured as a polyhedron, which can be formed by providing multiple small facets on the outer surface of a hemispherical shape. The universal groove can be configured as a U-shaped groove. One facet of the polyhedron can contact the bottom surface of the U-shaped groove to prevent partial rotation between the hemisphere and the hemispherical groove, thereby allowing the partial hemisphere and the hemispherical groove to maintain their relative positions.

[0065] The welding fixture 200 includes a balancing part 230, which is connected to the second side 210b. The balancing part 230 can be deformed to press the welding fixture onto various positions of the electrical components.

[0066] For example, the balancing part 230 and the second side surface 210b can be connected by a welding process.

[0067] The balancing section 230 is provided with at least one balancing groove, the opening of the balancing groove is parallel to the second side surface 210b, and the balancing groove passes through the balancing section 230 in a direction parallel to the second side surface 210b.

[0068] For example, the balancing groove can be designed as a U-shaped groove. The U-shaped groove can be manufactured using wire cutting, and its regular shape facilitates the processing of the balancing groove.

[0069] When the welding press is connected to the welding fixture 200, the first side 210a faces the mounting surface, and the universal joint 220 abuts against the universal groove. By abutting the universal joint 220 against the universal groove at different positions, the relative position of the welding press and the welding fixture 200 can be adjusted, so that the welding press is in a slightly tilted state.

[0070] Reference Figure 3 and Figure 4 As shown, if the PCBA is warped or the FPC is bent, gaps exist in the electrical components. When the welding press 100 performs thermoforming on the electrical components, a welding fixture 200 is connected to the top of the welding press 100. By adjusting the relative positions of the universal joint 220 with the universal groove, the welding press 100 and the welding fixture 200 are adjusted, causing the welding press 100 to be in a slightly tilted state, tilting towards the side where the gap in the electrical component exists.

[0071] When the welding press 100 performs thermocompression welding on the electrical components, the welding press 100 first contacts the electrical components with gaps for thermocompression welding. As the welding press 100 continues to press down on the electrical components under vertical downward pressure, the welding press 100 contacts various points on the electrical components to be welded. Due to the relative tilt between the welding press 100 and the welding fixture 200, and the deformation of the wall of the balancing groove, the welding press 100 contacts various points on the electrical components to be welded.

[0072] It is readily understood that the welding fixture 200 of this application, through the universal joint 220 protruding from the fixture body 210 abutting against different positions of the welding press 100, can serve to support the welding fixture 200. Adjusting the relative position of the welding press 100 and the fixture body 210 allows the welding press 100 to tilt towards the gap side of the electrical component, ensuring that the welding press 100 initially contacts the gap side of the electrical component. To allow the welding press 100 to contact each welding position of the electrical component, the welding press 100 continues to be pressed down by vertical downward pressure. The force between the welding press 100 and the gap side of the electrical component increases, compensating for welding defects caused by the gap of the electrical component, thereby improving the stability and reliability of the thermocompression welded connection of the electrical component. Simultaneously, the wall of the balance groove of the balance part 230 connected to the fixture body 210 undergoes adaptive deformation, allowing the welding press 100 to gradually contact each welding position of the electrical component, thus improving the stability and reliability of the connection at each welding position of the electrical component. Welding fixture 200 can improve the welding pass rate by 30%.

[0073] Furthermore, multiple balancing grooves are provided, spaced apart along a direction perpendicular to the second side 210b, with at least some of the groove openings facing different directions. The multiple spaced balancing grooves allow the welding fixture 200 to deform in more directions to accommodate the adjustment of the universal joint 220. This avoids insufficient deformation or unidirectional deformation of a single balancing groove, ensuring that after tilting adjustment in various directions, the welding fixture 100 can perform heat pressing on the welding positions of the electrical components in various directions, thereby ensuring the reliability of the welding of the electrical components.

[0074] Furthermore, the bottom of the balancing groove has a circular arc cross-section. The inner arc of the circular arc bottom faces the groove opening, allowing for a smooth transition between the groove walls and the bottom, avoiding right angles or acute angles. This prevents stress concentration at the connection between the groove bottom and the groove walls during deformation. This design avoids cracking or damage at the connection between the groove bottom and the groove walls due to excessive local stress during deformation, thus improving the reliability of the welding fixture 200.

[0075] In addition, the arc-shaped groove bottom and groove wall transition smoothly, preventing right angles or sharp angles, which facilitates the processing of the balancing groove and improves the processing efficiency of the balancing groove.

[0076] Along the direction perpendicular to the second side 210b, the wall of the balancing groove is greater than or equal to the width of each balancing groove. That is, the wall between any two adjacent balancing grooves is greater than or equal to the width of each balancing groove. This prevents insufficient structural rigidity due to excessively thin groove walls, avoids excessive deformation or breakage of the groove walls when the welding press 100 is pressed down, and ensures the reliability of the balancing part 230.

[0077] In some possible implementations, the wall width of the balancing groove is equal to the width of each balancing groove. The groove wall width provides sufficient deformation space for each balancing groove, which can prevent structural interference between adjacent balancing grooves during deformation. This ensures that the welding fixture 200 can be adjusted, and the tilting of the welding press 100 can ensure the reliability of the connection at each welding position of the electrical components and reduce welding defects.

[0078] For example, the width of each balancing groove is set to 2mm, and the wall width between two balancing grooves is set to 2mm. The 2mm width allows for sufficient deformation space in the groove wall, and the 2mm width prevents insufficient structural rigidity due to excessively thin groove walls. This avoids excessive deformation or breakage of the groove wall when the welding press 100 is pressed down, ensuring the reliability of the balancing part 230.

[0079] Reference Figure 2 and Figure 5As shown, in some possible embodiments, the plurality of balancing grooves includes a first balancing groove 231 and a second balancing groove 232, with the openings of the first balancing groove 231 facing opposite directions to the openings of the second balancing groove 232. That is, the openings of the first balancing groove 231 and the second balancing groove 232 face opposite directions. The welding fixture 200 can be deformed according to the orientation of the openings of the first balancing groove 231 and the second balancing groove 232 to adjust the welding press 100 to accommodate situations where there is a gap in the electrical components along this direction, thereby reducing welding defects.

[0080] Continue to refer to Figure 2 and Figure 5 As shown, the multiple balancing grooves include a third balancing groove 233 and a fourth balancing groove 234. The openings of the third balancing groove 233 and the fourth balancing groove 234 face opposite directions. In other words, the openings of the third balancing groove 233 and the fourth balancing groove 234 face opposite directions. The third balancing groove 233 and the fourth balancing groove 234 expand the adjustment dimensions of the balancing section 230, facilitating multi-directional tilting of the welding press 100 to accommodate gaps in electrical components along multiple directions and reduce welding defects.

[0081] The openings of the first balancing groove 231, the second balancing groove 232, the third balancing groove 233, and the fourth balancing groove 234 are parallel to four directions that are orthogonal to each other on the second side surface 210b. This orthogonal arrangement expands the adjustment dimension of the balancing section 230 from a single direction to a two-dimensional adjustment, allowing the welding fixture 100 to be tilted in any direction within the plane of the second side surface 210b, adapting to situations where electrical components have gaps in multiple directions. This avoids adjustment dimensions that cannot be covered by unidirectional or bidirectional adjustment, further ensuring that each solder joint can withstand force and heat, reducing defects such as poor solder penetration and cold solder joints, and enhancing the stability of thermocompression bonding.

[0082] For example, the second side 210b is parallel to the horizontal plane, the opening of the first balancing groove 231 faces left, the opening of the second balancing groove 232 faces right, the opening of the third balancing groove 233 faces rear, and the opening of the fourth balancing groove 234 faces forward. This allows the welding fixture 100 to be tilted in any direction within the plane of the second side 210b, adapting to situations where electrical components have gaps in multiple directions. This avoids adjustment dimensions that cannot be covered by unidirectional or bidirectional adjustments, further ensuring that each solder joint can withstand force and heat, reducing defects such as poor solder penetration and cold solder joints, and enhancing the stability of thermocompression welding connections.

[0083] In some possible implementations, the first balancing groove 231, the second balancing groove 232, the third balancing groove 233, and the fourth balancing groove 234 are arranged sequentially along a direction perpendicular to the second side surface 210b. That is, the four balancing grooves are arranged spirally. Two balancing grooves with their openings facing away from each other are not adjacent, which avoids reducing the thickness of one of the two balancing grooves, thereby preventing one of the balancing grooves from being damaged during deformation.

[0084] The balancing section 230 includes a first balancing section 2301 and a second balancing section 2302, which are connected along a direction perpendicular to the second side surface 210b. That is, the balancing section 230 can be configured such that the first balancing section 2301 and the second balancing section 2302 are connected.

[0085] For example, the first balancing part 2301 and the second balancing part 2302 can be connected together by welding (such as friction welding) to ensure the flatness of the balancing part 230 after connection, facilitate the adjustment of the welding fixture 200 and improve the appearance.

[0086] In some possible implementations, a first balancing groove 231 and a second balancing groove 232 are disposed in a first balancing section 2301, and a third balancing groove 233 and a fourth balancing groove 234 are disposed in a second balancing section 2302. The openings of the first balancing groove 231 and the second balancing groove 232 are disposed opposite to each other in the first balancing section 2301. When machining the first balancing groove 231 and the second balancing groove 232, the first balancing section 2301 can avoid changing its fixed orientation and can complete the machining in one go, thereby improving the machining efficiency of the first balancing section 2301. Similarly, the openings of the third balancing groove 233 and the fourth balancing groove 234 are disposed opposite to each other in the second balancing section 2302. When machining the third balancing groove 233 and the fourth balancing groove 234, the second balancing section 2302 can avoid changing its fixed orientation and can complete the machining in one go, thereby improving the machining efficiency of the second balancing section 2302.

[0087] For example, the balancing part 230 is configured as a rectangular block. The first balancing part 2301 and the second balancing part 2302 can be configured as rectangular blocks to facilitate the processing and manufacturing of the first balancing part 2301 and the second balancing part 2302.

[0088] The welding fixture 200 has multiple through holes 240 along a direction perpendicular to the second side surface 210b. The through holes 240 can be located in the balancing part 230 or in the fixture body 210. The through holes 240 can be used to connect the welding fixture 200 and the welding press 100, to connect the first balancing part 2301 and the second balancing part 2302, and can also be used for heat dissipation.

[0089] The heat from the welding press 100 (the side near the welding fixture 200) can be dissipated through the partial through hole 240, thereby preventing heat accumulation on the side of the welding press 100 near the welding fixture 200 and thus preventing damage to the welding press 100.

[0090] For example, eight through holes 240 can be provided, and the eight through holes 240 are arranged sequentially at intervals along the periphery of the balancing part 230. The eight through holes 240 include four heat dissipation holes 241 and four fixing holes 242, which are arranged alternately. This can improve the uniformity of heat dissipation of the heat dissipation holes 241 and improve the stability of the connection between the first balancing part 2301 and the second balancing part 2302.

[0091] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A welding fixture for adjusting a welding press (100), characterized in that, The welding fixture (200) includes a fixture body (210), a universal joint (220), and a balancing part (230). The first side (210a) of the tooling body (210) is used to face the welding press (100), the second side (210b) of the tooling body (210) is opposite to the first side (210a), and the universal part (220) protrudes from the first side (210a). The balancing part (230) is connected to the second side surface (210b). The balancing part (230) is provided with at least one balancing groove. The opening of the balancing groove is parallel to the second side surface (210b). The balancing groove passes through the balancing part (230) in a direction parallel to the second side surface (210b).

2. The welding fixture according to claim 1, characterized in that, The balancing grooves are provided in multiple ways, and the multiple balancing grooves are spaced apart along a direction perpendicular to the second side surface (210b), and at least some of the balancing grooves have different orientations at their openings.

3. The welding fixture according to claim 2, characterized in that, The plurality of balancing grooves include a first balancing groove (231) and a second balancing groove (232), wherein the opening of the first balancing groove (231) is oriented opposite to the opening of the second balancing groove (232).

4. The welding fixture according to claim 3, characterized in that, The plurality of balancing grooves include a third balancing groove (233) and a fourth balancing groove (234), wherein the opening of the third balancing groove (233) faces away from the opening of the fourth balancing groove (234); The openings of the first balancing groove (231), the second balancing groove (232), the third balancing groove (233), and the fourth balancing groove (234) are parallel to the four directions that are orthogonal to each other on the second side surface (210b).

5. The welding fixture according to claim 4, characterized in that, The balancing part (230) includes a first balancing part (2301) and a second balancing part (2302), and the first balancing part (2301) and the second balancing part (2302) are connected in a direction perpendicular to the second side surface (210b); The first balancing groove (231) and the second balancing groove (232) are disposed in the first balancing part (2301), and the third balancing groove (233) and the fourth balancing groove (234) are disposed in the second balancing part (2302).

6. The welding fixture according to claim 2, characterized in that, The wall of the balancing groove is greater than or equal to the width of the balancing groove.

7. The welding fixture according to any one of claims 1-5, characterized in that, The bottom of the balancing groove has a circular arc cross-section, with the inner arc of the circular arc bottom facing the opening of the balancing groove.

8. The welding fixture according to any one of claims 1-5, characterized in that, The projection of the universal joint (220) toward the first side (210a) is the first projection; The area of ​​the first projection is greater than or equal to one-fifth of the area of ​​the first side surface (210a) and less than or equal to one-third of the area of ​​the first side surface (210a).

9. The welding fixture according to any one of claims 1-5, characterized in that, The welding fixture (200) is provided with a plurality of through holes (240) in a direction perpendicular to the second side surface (210b), and at least one of the through holes (240) is used for heat dissipation.

10. A welding apparatus, characterized in that, It includes a welding press (100) and a welding fixture (200) as described in any one of claims 1-9, wherein the welding press (100) and the welding fixture (200) are detachably connected; The welding press (100) is provided with a universal groove, which is recessed into the mounting surface of the welding press (100) and is configured to cooperate with the universal part (220); When the welding press (100) is connected to the welding fixture (200), the first side (210a) is opposite to the mounting surface, and the universal joint (220) abuts against the universal groove.

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