Welding jig and welding equipment

Abstract

The welding jig comprises a limiting support and a pressing block, a welding part is defined by the limiting support to limit a workpiece, and the pressing block and the limiting support are matched to limit the workpiece in the circumferential direction so that the workpiece can be fixed to the welding part to be welded. An opening is formed in one side of the welding part, so that a welded workpiece can be taken out conveniently; by arranging the limiting support with the opening, the jig and the workpiece are convenient to disassemble and assemble, the situation that due to the fact that the size of the limiting support is fixed, the workpiece is damaged due to stress concentration between the limiting support and the workpiece in the workpiece assembling or disassembling process is avoided by opening the opening, and the contact probability between the jig and the workpiece is reduced; therefore, the risk of damage and edge breakage of the workpiece is reduced, the workpiece can be better protected in the welding and disassembling process, in addition, the pressing block and the limiting support are matched to stably position the workpiece, the risk of uneven pressing caused by inclination of the pressing block in the workpiece welding process is effectively reduced, and the welding stability and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically to a welding fixture and welding equipment. Background Technology

[0002] Existing liner welding fixture assemblies are mainly used for vacuum reflow welding processes between substrates and liners. These assemblies primarily consist of a limiting bracket and a pressure block. The limiting bracket mainly restricts the placement position of the solder pads and the liner, ensuring that the relative positions of the liner and substrate do not shift during welding. The pressure block, through its own weight, squeezes the liner and molten solder pads during welding, expelling gas from the liner's edge.

[0003] However, existing substrate welding fixture assemblies generally adopt a one-piece molded structure, directly clamped into the limiting holes of the substrate. This structure suffers from high internal thermal stress. After welding, the fixture and substrate are prone to contact under stress, leading to chipping of the substrate edge during fixture disassembly, affecting the yield of module packaging. In addition, the lack of a positioning structure in the mounting method of the aforementioned pressure block increases the risk that the pressure block may come into contact with components located in the middle of the substrate surface due to the substrate tilting during welding.

[0004] Therefore, the existing technology needs further improvement. Utility Model Content

[0005] To address the shortcomings of existing technologies, a welding fixture and welding equipment are proposed. These solutions solve the problems in existing technologies, such as the fixture and the liner being prone to contact under stress, leading to liner chipping during fixture disassembly, and the lack of a positioning structure for the pressure block increasing the risk of the liner tilting and contacting the pressure block components during welding.

[0006] To achieve the above objectives, the present invention proposes the following technologies:

[0007] A welding fixture includes a limiting bracket and a pressure block. The limiting bracket forms a welding section to limit the workpiece. The pressure block cooperates with the limiting bracket to limit the circumferential movement of the workpiece to fix the workpiece on the welding section for welding. An opening is provided on one side of the welding section to facilitate the removal of the welded workpiece.

[0008] Furthermore, the limiting bracket includes a main bracket and a side bracket. The side bracket is located on the side where the opening is provided in the limiting part and is rotatably connected to the main bracket. Rotating the side bracket away from or towards the main bracket controls the opening and closing of the opening to facilitate the disassembly of the workpiece.

[0009] Furthermore, limit blocks are respectively provided on the main support and the side support. Multiple limit blocks are provided and located around the welding part. The multiple limit blocks form a welding part to uniformly limit the workpiece for easy welding.

[0010] Furthermore, the end of the main support is provided with a connector, and the side support is rotatably connected to the connector. The connector includes a guide portion, and the side support cooperates with the guide portion during the rotation of the side support around the connector to achieve stable rotation of the side support.

[0011] Furthermore, the end of the side bracket is provided with an adapter, and the connector also includes an adapter groove for accommodating the adapter. The adapter rotates within the adapter groove to achieve a rotatable connection between the side bracket and the main bracket to control the opening and closing of the opening.

[0012] Furthermore, the guide part is specifically a guide groove provided above the adapter groove, and the adapter is provided with a slider. The adapter rotates in the adapter groove and drives the slider to slide in the guide groove to limit and guide the adapter.

[0013] Furthermore, a first transition surface is provided in the transition groove. The first transition surface is arc-shaped. The adapter is connected to the first transition surface through a second transition surface. The second transition surface is arc-shaped and has the same center as the arc shape of the first transition surface.

[0014] Furthermore, the main support is provided with a limiting part, and the pressure block is provided with a connector on the side near the limiting part. The connector is located on the protrusion and is inserted into the limiting part to achieve alignment between the pressure block and the limiting part, thereby cooperating with the limiting support to uniformly press the workpiece.

[0015] Furthermore, the limiting part includes a first limiting part disposed on the connector head, and the plug includes a first plug, which is inserted into the first limiting part to realize the positioning of the pressure block and limit the adapter to fix the rotation angle of the side bracket.

[0016] Furthermore, the first limiting part includes a first limiting hole opened on the top of the connector and communicating with the adapter groove, and a second limiting hole is opened on the adapter. Both the first limiting hole and the second limiting hole are square holes, and their shapes are respectively matched with the shape of the first plug.

[0017] Furthermore, a pressing part is provided on the side of the pressure block near the limiting bracket. Multiple pressing parts are provided along the periphery of the pressure block to uniformly press the workpiece. The pressing parts and the limiting block are staggered.

[0018] Furthermore, the limiting part also includes a second limiting part disposed opposite to the first limiting part. The second limiting part is specifically a limiting groove formed on the main body support. The plug also includes a second plug that is plugged into the limiting groove. The limiting groove and the first limiting hole cooperate to position the pressure block from both sides.

[0019] Furthermore, a positioning pin for insertion into the substrate is provided below the main support. Two positioning pins are arranged opposite each other, and the two positioning pins are respectively inserted into the positioning holes on the substrate to realize the positioning of the support on the substrate.

[0020] Furthermore, the workpiece includes a welding sheet and a liner plate, the welding sheet being located below the liner plate, the shapes of the welding sheet and the liner plate respectively matching the shape of the limiting part, and the pressure block abutting against the liner plate from above to press and fix the liner plate and the welding sheet.

[0021] A welding apparatus comprising a welding fixture as described in any of the preceding claims.

[0022] Compared with the prior art, the comprehensive effects brought about by this utility model include:

[0023] This application utilizes an open-ended limiting bracket to facilitate the assembly and disassembly of the fixture and workpiece. By opening the bracket, it avoids stress concentration between the workpiece and the limiting bracket during installation or disassembly, which could lead to workpiece damage due to the fixed size of the limiting bracket. This reduces the likelihood of contact between the fixture and the workpiece, thereby lowering the risk of workpiece damage and chipping. It also better protects the workpiece during welding and disassembly. Furthermore, the pressure block and the limiting bracket work together to form a limiting part, which stably positions the workpiece and effectively reduces the risk of uneven clamping caused by the tilting of the pressure block during welding, thus improving the stability and reliability of the welding process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the welding fixture according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the main support structure of an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the side structure of the main support frame in an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the side support structure according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the side structure of the side bracket in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the top structure of the pressure block in an embodiment of this utility model;

[0030] Figure 7 This is a schematic diagram of the bottom structure of the pressure block in an embodiment of this utility model;

[0031] Figure 8 This is a schematic diagram of the side structure of the pressure block in an embodiment of the present invention;

[0032] Figure 9 This is a top view of the welding fixture assembly structure according to an embodiment of the present invention;

[0033] Figure 10 This is a side view of the assembly structure of the welding fixture according to an embodiment of the present invention.

[0034] Legend: 1. Limiting bracket; 2. Pressure block; 3. Opening; 4. Main bracket; 5. Side bracket; 6. Limiting block; 7. Limiting step; 8. Connector; 9. Adapter; 10. Adapter groove; 11. Guide groove; 12. Slider; 13. Protrusion; 14. First connector; 15. First limiting hole; 16. Second limiting hole; 17. Pressing part; 18. Limiting groove; 19. Second connector; 20. Positioning pin. Detailed Implementation

[0035] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Terms such as "upper," "lower," "left," "right," and "top" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] like Figures 1 to 10 As shown, a welding fixture includes a limiting bracket 1 and a pressure block 2. The limiting bracket 1 forms a welding part to limit the workpiece. The pressure block 2 cooperates with the limiting bracket 1 to limit the workpiece circumferentially to fix the workpiece on the welding part for welding. An opening 3 is provided on one side of the welding part to facilitate the removal of the welded workpiece.

[0038] The limiting bracket 1 with an opening 3 is provided to facilitate the installation of the workpiece onto the limiting part or the removal of the workpiece from the limiting part. By opening the opening 3, the workpiece damage is avoided due to the fixed size of the limiting bracket 1 and the resulting stress concentration between the workpiece and the limiting bracket 1 during installation or removal. This reduces the probability of contact between the fixture and the workpiece, thereby reducing the risk of workpiece damage and chipping. It can better protect the workpiece during welding and disassembly. In addition, the pressure block 2 cooperates with the limiting bracket 1 to form a limiting part, which stably positions the workpiece and effectively reduces the risk of uneven clamping caused by the tilting of the pressure block 2 during the welding process, thus improving the stability and reliability of welding.

[0039] In the welding fixture of this embodiment, the limiting bracket 1 includes a main bracket 4 and a side bracket 5. The side bracket 5 is located on the side where the opening 3 is provided in the limiting part and is rotatably connected to the main bracket 4. Rotating the side bracket 5 away from or close to the main bracket 4 controls the opening and closing of the opening 3 to facilitate the disassembly of the workpiece.

[0040] Specifically, by setting the limiting bracket 1 as a rotating connection between the main bracket 4 and the side bracket 5, the opening 3 is controlled by rotating the side bracket 5 around the main bracket 4, which facilitates the assembly or disassembly of the workpiece and the fixture, reduces the risk of damage caused by the workpiece contacting the inner wall of the limiting bracket 1, and limits the side of the workpiece by rotating the side bracket 5 and the pressure block 2 to stably limit the workpiece during the welding process, thereby improving the stability and reliability of the welding.

[0041] Preferably, in this embodiment, the limiting bracket 1 and the pressure block 2 are used together, with two sets of components on the left and right sides. All specifications and parameters of the two sets of components are the same, and they are installed in a centrally symmetrical manner.

[0042] In the welding fixture of this embodiment, the main support 4 and the side support 5 are respectively provided with limiting blocks 6. There are multiple limiting blocks 6 and they are located around the welding part. The multiple limiting blocks 6 form a welding part to uniformly limit the workpiece for easy welding.

[0043] Specifically, the limiting block 6 extends to the inner side of the limiting bracket 1 to form a protrusion. By setting the protruding limiting block 6 and the limiting step 7, the workpiece is prevented from contacting the inner wall of the main bracket 4 or the side bracket 5, thereby reducing the contact area between the workpiece and the limiting bracket 1, thus reducing the contact force on the workpiece and reducing the risk of edge chipping damage during the disassembly or installation of the workpiece.

[0044] Preferably, the end of the limiting block 6 closest to the workpiece is arc-shaped, so that the limiting block 6 makes point contact with the workpiece when it is in contact with the workpiece, thereby reducing the contact area between the workpiece and the limiting bracket 1 and avoiding thermal stress.

[0045] Preferably, a limiting step 7 is provided at the end of the upper surface of the limiting block 6 away from the main support 4 or the side support 5. The limiting step 7 forms an inclined surface on the limiting block 6, which plays a certain guiding role and makes it easier to place the workpiece on the welding part.

[0046] In the welding fixture of this embodiment, the end of the main support 4 is provided with a connector 8, the side support 5 is rotatably connected to the connector 8, the connector 8 includes a guide part, and the side support 5 cooperates with the guide part during the rotation of the connector 8 to achieve stable rotation of the side support 5.

[0047] Specifically, a connector 8 is provided to connect the side bracket 5. The connector 8 is located at the end of the main bracket 4, which facilitates the rotation of the side bracket 5 to open or close the opening 3, thereby achieving the effect of limiting the workpiece from the side by the side bracket 5 and preventing the workpiece from being placed from above and coming into contact with the inner wall of the limiting bracket 1, which would generate stress. The guide part guides and limits the rotation process of the side bracket 5, preventing the side bracket 5 from rotating too much and squeezing the workpiece.

[0048] By using a rotational design in both length and width directions, the contact between the fixture and the workpiece can be effectively reduced during welding and disassembly, thereby reducing workpiece edge chipping caused by thermal stress or the squeezing force between the workpiece and the fixture during assembly and disassembly, and thus improving the workpiece welding yield.

[0049] In the welding fixture of this embodiment, the end of the side support 5 is provided with an adapter 9, and the connector 8 also includes an adapter groove 10 for accommodating the adapter 9. The adapter 9 rotates in the adapter groove 10 to realize the rotational connection between the side support 5 and the main support 4 to control the opening and closing of the opening 3.

[0050] Specifically, the adapter groove 10 limits and guides the adapter 9, restricting the jump of the adapter 9 in the vertical direction during rotation. Combined with the limiting part, it realizes a reliable connection between the adapter 9 and the connector 8, thereby improving the stability of the side bracket 5 rotating around the connector 8 and preventing the limiting block 6 on the side bracket 5 from failing to make stable contact with the workpiece to provide a limit.

[0051] In the welding fixture of this embodiment, the guide part is specifically a guide groove 11 provided above the adapter groove 10. The adapter 9 is provided with a slider 12. The adapter 9 rotates in the adapter groove 10 and drives the slider 12 to slide in the guide groove 11 to limit and guide the adapter 9.

[0052] Specifically, the guide groove 11 is connected to the adapter groove 10. The side away from the limiting part is provided with the slider 12 inlet. The guide groove 11 is arc-shaped, and its trajectory is concentric with the rotation trajectory of the adapter 9. The adapter groove 10 is provided with the adapter 9 inlet on the side near the slider 12 inlet. The adapter 9 is installed into the adapter groove 10 through the above two inlets. Then, under the guidance of the slider 12 and the guide groove 11, the adapter 9 drives the side bracket 5 to rotate around the connector 8 to control the opening and closing of the opening 3.

[0053] Preferably, when the slider 12 slides to the end of the guide groove 11, the side bracket 5 is perpendicular to the main bracket 4 on the adjacent side, thereby ensuring that the side bracket 5 effectively limits the side wall of the workpiece and improves the welding quality.

[0054] In the welding fixture of this embodiment, the transition groove 10 is provided with a first transition surface, which is arc-shaped. The adapter 9 is connected to the first transition surface through a second transition surface, which is arc-shaped and has the same center as the arc of the first transition surface.

[0055] Through the above settings, the rotation of the adapter 9 is guided and limited by the contact and relative sliding between the arc transition surfaces, thereby realizing the relative rotation of the side bracket 5 and the main bracket 4. The first transition surface and the second transition surface are in contact. Since the centers of the two are the same, the rotation axis of the adapter 9 is determined so that the adapter 9 can rotate around a fixed axis. This avoids the adapter 9 from being misaligned during rotation in the transition groove 10, ensuring that the side bracket 5 rotates smoothly. Traditional bearings are not required, which reduces manufacturing costs, simplifies the structure, and reduces the maintenance requirements of the rotating parts.

[0056] In the welding fixture of this embodiment, the workpiece includes a welding sheet and a liner plate. The welding sheet is located below the liner plate. The shapes of the welding sheet and the liner plate are respectively matched with the shapes of the limiting part. The pressure block 2 abuts against the liner plate from the top to press and fix the liner plate and the welding sheet.

[0057] As an important support structure for the circuit board, the backing plate has multiple sets of functional components on its surface. Most of these components are located in the middle of the backing plate. The fixture in this embodiment is mainly used for welding the backing plate and the solder pads.

[0058] The pressure block 2 is used to press down the backing plate and the solder sheet during welding, so that the solder is evenly distributed during the welding process, the backing plate does not tilt or shake, and it can quickly expel air bubbles and reduce porosity.

[0059] In the welding fixture of this embodiment, the main support 4 is provided with a limiting part, and the pressure block 2 is provided with a plug on the side near the limiting part. The plug is located on the protrusion 13 and is inserted into the limiting part to realize the alignment of the pressure block 2 with the limiting part, so as to cooperate with the limiting support 1 to uniformly press the workpiece.

[0060] By setting a limiting part and a plug, the two work together to enable the pressure block 2 to be quickly and accurately positioned on the limiting bracket 1 and the limiting part. At the same time, the limiting part limits the plug and thus limits the installation position of the pressure block 2 on the limiting bracket 1, preventing the pressure block 2 from shaking due to the melting of the welding sheet during the welding process. This ensures that the pressure block 2 is always in a stable position during the welding process, further improving the stability and quality of the welding process.

[0061] Preferably, the connector is located on the protrusion 13, which provides sufficient support strength for the connector while reducing the overall size of the pressure block 2.

[0062] In the welding fixture of this embodiment, the limiting part includes a first limiting part disposed on the connector 8, and the plug includes a first plug 14. The first plug 14 is inserted into the first limiting part to realize the positioning of the pressure block 2 and limit the adapter 9 to fix the rotation angle of the side bracket 5.

[0063] While positioning the pressure block 2 through the first connector 14, the first connector 14 further fixes the position and angle of the rotated side bracket 5. In conjunction with the guide groove 11 and the slider 12, it improves the positioning effect of the side bracket 5, so that the side bracket 5 effectively limits the side of the workpiece and avoids the workpiece from being crushed due to excessive or insufficient rotation angle of the side bracket 5.

[0064] In the welding fixture of this embodiment, the first limiting part includes a first limiting hole 15 opened on the top of the connector 8 and connected to the adapter groove 10. The adapter 9 is provided with a second limiting hole 16. The first limiting hole 15 and the second limiting hole 16 are both square holes, and their shapes are respectively matched with the shape of the first plug 14.

[0065] Specifically, the first connector 14 is a square column. When the side bracket 5 is rotated to a suitable position, the second limiting hole 16 at its end coincides and aligns with the first limiting hole 15 on the connector 8. Then, the first connector 14 is inserted into the connector 8. The square column and the square hole cooperate to limit the side bracket 5, so as to fix the overall shape of the limiting bracket 1 and stably limit the workpiece.

[0066] The pressure block 2 has a first connector 14 corresponding to the first limiting hole 15 on the side bracket 5, which can be accurately positioned and installed during assembly, and at the same time can prevent the pressure block 2 from shaking due to the melting of the welding sheet during the welding process, ensuring that the pressure block 2 is always in a stable position during the welding process.

[0067] In the welding fixture of this embodiment, a pressing part 17 is provided on the side of the pressure block 2 near the limiting bracket 1. Multiple pressing parts 17 are provided along the periphery of the pressure block 2 to uniformly press the workpiece. The pressing parts 17 and the limiting block 6 are staggered.

[0068] The clamping part 17 clamps the edge of the workpiece, further fixing and limiting the position between the workpiece and the limiting bracket 1, improving the fixing effect of the workpiece, and preventing the clamping part 17 on the pressure block 2 from contacting the components on the surface of the workpiece due to tilting, which may affect the normal function of the workpiece or even damage the workpiece.

[0069] In the welding fixture of this embodiment, the limiting part further includes a second limiting part disposed opposite to the first limiting part. The second limiting part is specifically a limiting groove 18 opened on the main body support 4. The plug-in also includes a second plug-in 19 that is plugged into the limiting groove 18. The limiting groove 18 and the first limiting hole 15 cooperate to position the pressure block 2 from both sides.

[0070] Two sets of connectors are provided to cooperate with the limiting groove 18 and the first limiting hole 15 on the limiting bracket 1. The square first connector 14 is used for the assembly and positioning of the side bracket 5 and the pressure block 2, and the second connector 19 is used for the assembly of the pressure block 2 and the limiting bracket 1. The cooperation of the two effectively reduces the risk of contact between the pressure block 2 and the surface components of the liner due to tilting during the welding process, and improves the stability and reliability of the welding.

[0071] Specifically, when installing the pressure block 2, the first connector 14 is fully inserted into the first limiting hole 15, and the second connector 19 is fully inserted into the limiting groove 18. This ensures that the pressure block 2 is tightly attached to the edge of the liner surface and does not tilt or loosen, thus ensuring that the distance between the pressure block 2 and the liner surface is uniform. This is to prevent the liner from warping or shifting due to uneven heating of the pressure block 2 during the welding process.

[0072] In the welding fixture of this embodiment, a positioning pin 20 for insertion into the substrate is provided below the main support 4. Two positioning pins 20 are arranged opposite each other, and the two positioning pins 20 are respectively inserted into the positioning holes on the substrate to realize the positioning of the limiting support 1 on the substrate.

[0073] The positioning pin 20 is set to facilitate fixing the fixture to the substrate surface, thereby ensuring welding stability. Two positioning pins are set to improve the positioning effect and prevent the limit bracket 1 from rotating around the positioning pin 20.

[0074] Specifically, during welding, after positioning the limiting bracket 1 using the bracket positioning pin 20, install it on the flat base plate, ensuring it is stable and without tilt. Check the rotation status of the side bracket 5, confirming that the rotating contact surface is smooth and unobstructed. Rotate the side bracket 5 to open the opening 3, and accurately place the welding piece (first) and the backing plate (later) inside the limiting bracket 1 to form the welding part, so that its edge makes point contact with the end of the limiting block 6. At this time, the backing plate should be flat, without tilting or warping, to ensure stability in the subsequent welding process. Adjust the rotation angle of the side bracket 5: manually rotate the side bracket 5 so that the limiting block 6 on its side contacts the backing plate, forming a stable limiting state. The side bracket 5 should be rotated slowly during operation to ensure uniform contact with the edge of the backing plate and no excessive pressure concentration. Position the pressure block 2 above the limiting bracket 1 using the connector, confirming that the pressure block 2 is tightly attached to the surface of the backing plate and does not tilt or loosen.

[0075] After welding, keep the angle of the limiting bracket 1 unchanged and wait for the welded area to cool completely. Avoid rotating or adjusting the side bracket 5 immediately to prevent the liner from deforming or being damaged due to uneven stress. Use anti-static tweezers to gently lift the connector from the joint between the connector and the limiting bracket 1 until the connector is loose. Carefully remove the pressure block 2 and place it in a safe area to prevent it from contacting the welding module or other precision parts during removal. Manually adjust the rotation angle of the side bracket 5 and slowly rotate it until the limiting block 6 is completely separated from the liner. Due to the frictional characteristics of the bearingless design, the rotation process should be slow. Use anti-static tweezers to gently lift the main bracket 4 from the connection between the positioning pin 20 and the substrate until the main bracket 4 is loose. Pinch the main bracket 4 and gently remove the limiting bracket 1 as a whole to complete the fixture disassembly process.

[0076] On the other hand, this application also proposes a welding device including a welding fixture as described in any of the above embodiments. It is foreseeable that the welding device in this application includes all the beneficial effects of the welding fixture in the above embodiments, which will not be repeated here.

[0077] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0078] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soldering fixture, characterized by, The application relates to a welding device, which comprises a limiting support and a pressing block, the limiting support surrounds a welding part to limit a workpiece, the pressing block cooperates with the limiting support to limit the workpiece in the circumferential direction to fix the workpiece on the welding part to perform welding, one side of the welding part is provided with an opening to facilitate taking out the workpiece after the welding is completed.

2. The soldering fixture of claim 1, wherein The limiting support comprises a main support and a side support, the side support is located at the side of the welding part provided with the opening and is rotationally connected with the main support, and the side support is rotated away from or close to the main support to control the opening and closing of the opening to facilitate the dismounting of the workpiece.

3. The soldering fixture of claim 2, wherein, Limiting blocks are arranged on the main support and the side support respectively, a plurality of the limiting blocks are arranged on the side of the welding part, and the limiting blocks are arranged between the limiting blocks to form the welding part to uniformly limit the workpiece to facilitate the welding.

4. The soldering fixture of claim 2, wherein, An adapter is arranged at the end of the main support, the side support is rotationally connected with the adapter, the adapter comprises a guide part, and the side support is rotationally connected with the guide part to realize the stable rotation of the side support.

5. The soldering fixture of claim 4, wherein, An adapter is arranged at the end of the side support, the adapter further comprises an adapter groove for accommodating the adapter, and the adapter is rotationally connected with the main support in the adapter groove to control the opening and closing of the opening.

6. The soldering fixture of claim 5, wherein, The guide part is a guide groove arranged above the adapter groove, a sliding block is arranged on the adapter, and the adapter is rotationally connected with the main support in the adapter groove and drives the sliding block to slide in the guide groove to limit and guide the adapter.

7. The soldering fixture of claim 5, wherein, A first adapter surface is arranged in the adapter groove, the first adapter surface is in the shape of a circular arc, a second adapter surface is arranged on the adapter and is in the shape of a circular arc and has the same center as the first adapter surface.

8. The soldering fixture of claim 5, wherein, A limiting part is arranged on the main support, a plug-in head is arranged on the side of the pressing block close to the limiting part, the plug-in head is arranged on a convex part, and the plug-in head is plugged into the limiting part to realize the alignment of the pressing block and the limiting part and to uniformly press the workpiece together with the limiting support.

9. The soldering fixture of claim 8, wherein, The limiting part comprises a first limiting part arranged on the adapter, the plug-in head comprises a first plug-in head, and the first plug-in head is plugged into the first limiting part to realize the positioning of the pressing block and the limiting of the adapter to fix the rotation angle of the side support.

10. The soldering fixture of claim 9, wherein, The first limiting part comprises a first limiting hole arranged on the top of the adapter and communicated with the adapter groove, a second limiting hole is arranged on the adapter, the first limiting hole and the second limiting hole are both square holes, and the shapes of the first limiting hole and the second limiting hole are matched with the shape of the first plug-in head.

11. The soldering fixture of claim 3, wherein, A pressing part is arranged on the side of the pressing block close to the limiting support, a plurality of the pressing parts are arranged along the side of the pressing block to uniformly press the workpiece, and the pressing parts are staggered with the limiting blocks.

12. The soldering fixture of claim 9, wherein, The limiting part further comprises a second limiting part arranged opposite to the first limiting part, the second limiting part is a limiting groove arranged on the main support, the plug-in head further comprises a second plug-in head plugged into the limiting groove, and the limiting groove and the first limiting hole cooperate to position the pressing block from both sides.

13. The soldering fixture of claim 2, wherein, The lower part of the main support is provided with positioning pins for plugging with the base plate, the two positioning pins are oppositely arranged and plugged with the positioning holes on the base plate to realize the positioning of the limiting support on the base plate.

14. The soldering fixture of claim 1, wherein, The workpiece comprises a welding piece and a backing plate, the welding piece is below the backing plate, the shapes of the welding piece and the backing plate are matched with the shape of the limiting part, and the pressing block abuts against the backing plate from the upper side to press and fix the backing plate and the welding piece.

15. A welding apparatus characterized by, A welding fixture comprising any one of claims 1-14.

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