Automobile support welding device and welding process

Abstract

The invention relates to the technical field of automobile support welding, in particular to an automobile support welding device and process. The automobile support welding device comprises a mounting base, and a welding robot is arranged on the mounting base; the bearing plate is connected with the mounting base, and the bearing plate is located on one side of the welding robot; the material pushing rods are located above the bearing plate, a containing area is formed between the two material pushing rods in the same group, each material pushing rod is provided with at least two force application points, and the force application points on the two material pushing rods act on parts to be welded so that the two parts to be welded can abut against each other; the at least one driving unit is used for changing the distance between the two material pushing rods, the driving unit is connected with the bearing plate, and the driving unit is connected with the material pushing rods; the welding device has the effect that the time for assembling and disassembling the to-be-welded part is shortened, so that the welding machining efficiency of the automobile support is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile bracket welding, and in particular to an automobile bracket welding device and a welding process. Background Art

[0002] "Automobile bracket" refers to a structure used to support and fix the components of an automobile. In an automobile, the bracket may be used in many aspects, including but not limited to: engine bracket, suspension bracket, body bracket and exhaust system bracket, etc. According to the specific design and manufacturing requirements, the automobile bracket may use a variety of different materials and processes, such as welding, riveting, clamping, etc.

[0003] In order to realize the welding processing of the automobile bracket, the prior art discloses a welding fixture for the automobile dashboard bracket, which includes two side panels, a main base and a clamping device installed on the main base, the clamping device includes a left reference clamping device, a right reference clamping device and a local clamping device, the left reference clamping device includes a clamping mechanism, a left reference pin seat, a left reference positioning pin installed on the left reference pin seat and a left reference pressure block for clamping the product with the left reference pin seat, the right reference clamping device includes three clamping mechanisms and two positioning mechanisms installed on the right end of the main base through a supporting connecting seat, the positioning mechanism includes a cylinder and a right reference positioning pin connected to the cylinder, the local clamping device includes a clamping mechanism installed on the main base through a supporting connecting seat, and the clamping mechanism includes a cylinder, a pressure rod, a support rod and a clamping limit block.

[0004] With regard to the above-mentioned related technologies, before welding, two parts to be welded are first fixed separately by two clamping devices, and then the two clamping devices are driven close to each other to make the welding areas of the two parts to be welded contact, and then the welding operation is performed by a welding robot. For the parts fixed by spot welding, the operation time required to load and unload the parts to be welded from the clamping device is relatively long, which affects the welding processing efficiency of the automobile bracket. Summary of the invention

[0005] In order to shorten the time for assembling and disassembling parts to be welded and improve the welding processing efficiency of an automobile bracket, the present application provides an automobile bracket welding device and a welding process.

[0006] The present application provides an automobile bracket welding device and a welding process using the following technical solutions: In a first aspect, the present application provides a vehicle bracket welding device.

[0007] An automobile bracket welding device, comprising: A mounting base, on which a welding robot is arranged; A supporting plate, the supporting plate is connected to the mounting base, and the supporting plate is located on one side of the welding robot; At least one group of push rods, a placement area is formed between two push rods in the same group, and at least two force application points are provided on the push rods, and the force application points on the two push rods act on the parts to be welded so that the two parts to be welded abut against each other; At least one driving unit for changing the distance between the two push rods, the driving unit is connected to the support plate, and the driving unit is connected to the push rod.

[0008] By adopting the above technical scheme, two parts to be welded are placed on a supporting plate, and the force points of the parts to be welded are located on the movement trajectory of the force application point on the push rod; the driving unit applies force to the two push rods, and the push rods make the two parts to be welded approach each other until the welding areas abut; the welding robot welds the welding area until the two parts to be welded are welded to obtain a car bracket, and then the driving unit makes the two push rods move toward the side away from each other to achieve unlocking of the car bracket; the designed car bracket welding device can install the welding robot and the supporting plate through the mounting base, and the supporting plate can provide sliding support for the parts to be welded, and the driving unit can change the spacing between the two push rods, and then the push rods can achieve the abutment and fixation of the two parts to be welded, so as to facilitate welding. Since there is no need to clamp and fix the parts to be welded at multiple positions and unlock them at multiple positions, the time for assembling and disassembling the parts to be welded is shortened to improve the welding processing efficiency of the car bracket.

[0009] In a specific possible implementation scheme, a plurality of force-applying rods are slidably connected to the push rod, and an adjusting spring is sleeved on the force-applying rod. The adjusting spring is connected to the push rod and the force-applying rod at the same time.

[0010] By adopting the above technical solution, the designed force rod and adjustment spring are matched to provide a certain relative position change space for the parts to be welded during the welding process, under the premise of achieving abutment between the two parts to be welded to facilitate welding, thereby avoiding excessive welding internal stress caused by complete fixation of the parts to be welded during the welding process, thereby improving the welding quality of the automobile bracket, and through the self-adaptation of the adjustment spring, multiple force rods can also be adapted to parts to be welded of different shapes.

[0011] In a specific possible implementation manner, the shape of the pusher rod is adapted to the shape of the parts to be welded.

[0012] By adopting the above technical solution, the push rod can be quickly matched with the part to be welded, thereby improving the welding processing efficiency of the automobile bracket.

[0013] In a specific possible implementation manner, the support plate is rotatably connected to the mounting base, the rotation axis of the support plate is horizontally arranged, and there is at least one group of push rods on opposite sides of the support plate.

[0014] By adopting the above technical solution, a reversible support plate is designed, and multiple sets of push rods are matched to realize the simultaneous welding process of the automobile bracket and the loading of the parts to be welded. Moreover, during the welding process of the automobile bracket, the heat emitted is transferred to the parts to be welded through the support plate, which is equivalent to preheating the parts to be welded before welding. It not only makes full use of the heat generated during welding, but also effectively reduces the welding thermal deformation and cooling rate, thereby improving the welding quality.

[0015] In a specific possible implementation mode, the support plate includes a mounting frame and a plurality of support rods, the mounting frame is rotatably connected to the mounting base, and the support rods are connected to the mounting frame to form a plurality of construction cavities.

[0016] By adopting the above technical solution, the designed support plate can form multiple construction cavities through the installation frame and the support rod, so that the welding robot can complete the comprehensive welding operation of the welding area through the construction cavity without turning over the parts to be welded, thereby improving the welding process efficiency.

[0017] In a specific possible implementation manner, the support rod is hollow and filled with a heat conductive material.

[0018] By adopting the above technical solution, the support rod designed with a hollow structure and filled with heat-conducting material can reduce the deformation of the support rod after being heated while ensuring its heat conduction efficiency.

[0019] In a specific implementation scheme, the driving unit includes: Two driving cylinders, wherein the driving cylinders are connected to the supporting plate, and the driving cylinder piston rods are connected to the push rod; A plurality of sliding guide blocks are connected to the push rod, and the sliding guide blocks are slidably connected to the supporting plate.

[0020] By adopting the above technical solution, the designed driving unit can drive the push rod to move through the driving cylinder, and the sliding direction of the push rod can be controlled through the sliding guide block, thereby ensuring the stability of the use of the connecting structure between the driving cylinder piston rod and the push rod.

[0021] In a second aspect, the present application provides a welding process for an automobile bracket.

[0022] A welding process for an automobile bracket, comprising: Place two parts to be welded on the support plate, and make the force points of the parts to be welded be located on the motion track of the force application point on the push rod; The driving unit applies force to the two push rods, so that the two parts to be welded are brought closer to each other until the welding areas abut against each other; The welding area is welded by a welding robot until the two parts to be welded are welded to obtain the automobile bracket.

[0023] By adopting the above technical solution, the welding robot and the support plate can be installed through the mounting base, the support plate can provide sliding support for the parts to be welded, the distance between the two push rods can be changed by the driving unit, and then the two parts to be welded can be abutted and fixed by the push rods to facilitate welding. Since there is no need to clamp and unlock the parts to be welded at multiple positions, the time for assembling and disassembling the parts to be welded is shortened to improve the welding processing efficiency of the automobile bracket.

[0024] In a specific feasible implementation scheme, a plurality of construction cavities are pre-processed on the support plate, and the relative position of the parts to be welded and the support plate is adjusted by a driving unit before welding until the welding area is in the construction cavity area on the support plate, so that the welding robot can pass through the construction cavity from top to bottom to complete welding of the welding area.

[0025] By adopting the above technical solution, the construction cavity makes it easier for the welding robot to complete the comprehensive welding operation on the welding area through the construction cavity, without turning over the parts to be welded, thereby improving the welding processing efficiency.

[0026] In a specific feasible implementation scheme, the support plate is rotatably connected to the mounting base, the rotation axis of the support plate is horizontally arranged, and there is at least one group of push rods on opposite sides of the support plate. After the first group of parts to be welded are abutted and fixed, the support plate is rotated, and then the next group of parts to be welded are abutted and fixed when the welding robot is welding.

[0027] By adopting the above technical solution, the flip support plate cooperates with multiple sets of push rods to realize the simultaneous welding process of the automobile bracket and the loading of the parts to be welded. Moreover, during the welding process of the automobile bracket, the heat emitted by it is transferred to the parts to be welded through the support plate, which is equivalent to preheating the parts to be welded before welding. It not only fully utilizes the heat generated during welding, but also effectively reduces the welding thermal deformation and cooling rate, thereby improving the welding quality.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed automobile bracket welding device can install a welding robot and a supporting plate through a mounting base, and the supporting plate can provide sliding support for the parts to be welded. The driving unit can change the distance between the two push rods, and then the two parts to be welded are abutted and fixed by the push rods to facilitate welding. Since there is no need to clamp and fix the parts to be welded at multiple positions and unlock them at multiple positions, the time for assembling and disassembling the parts to be welded is shortened to improve the welding processing efficiency of the automobile bracket.

[0029] 2. The designed automobile bracket welding device, through the cooperation of the force rod and the adjusting spring, can provide a certain relative position change space for the parts to be welded during the welding process, under the premise of achieving the abutment of the two parts to be welded for welding, thereby avoiding the excessive welding internal stress caused by the complete fixation of the parts to be welded during the welding process, thereby improving the welding quality of the automobile bracket, and through the self-adaptation of the adjusting spring, multiple force rods can also be adapted to parts to be welded of different shapes.

[0030] 3. The designed automobile bracket welding device can realize the simultaneous welding process of the automobile bracket and the loading of the parts to be welded through the flip support plate and multiple sets of push rods. Moreover, during the welding process of the automobile bracket, the heat emitted by it is transferred to the parts to be welded through the support plate, which is equivalent to preheating the parts to be welded before welding. It not only makes full use of the heat generated during welding, but also can effectively reduce the welding thermal deformation and cooling rate, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the automobile bracket welding device according to an embodiment of the present application.

[0032] Figure 2 yes Figure 1 Partial structural diagram of Example 1.

[0033] Figure 3 yes Figure 2 Schematic diagram of the local method after the middle section.

[0034] Figure 4 yes Figure 1 Partial structural diagram of Example 2.

[0035] Figure 5 is Figure 4 A schematic diagram of the structure after push rods are arranged on opposite sides of the supporting plate.

[0036] Figure 6 is Figure 5 On this basis, a structural schematic diagram of the supporting plate structure is further disclosed.

[0037] Explanation of the reference numerals in the accompanying drawings: 01, parts to be welded; 1, mounting base; 2, welding robot; 3, support plate; 31, mounting frame; 32, support rod; 4, push rod; 5, driving unit; 51, driving cylinder; 52, sliding guide block; 6, force rod; 7, adjustment spring. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The embodiment of the present application discloses a welding device and a welding process for an automobile bracket.

[0040] In a first aspect, an embodiment of the present application discloses a vehicle bracket welding device.

[0041] Reference Figure 1 A car bracket welding device includes a mounting base 1, a welding robot 2 and a supporting plate 3. The base of the welding robot 2 is bolted to the mounting base 1. The supporting plate 3 is connected to the mounting base 1 through two vertical poles, and the supporting plate 3 is located on one side of the welding robot 2. In the present application, the welding robot 2 can be a three-axis welding robot 2, a four-axis welding robot 2, or a five-axis welding robot 2, as long as it can realize welding of the welding area of ​​the welding component 01 to be welded. In the present embodiment, the welding robot 2 is preferably a five-axis welding robot 2.

[0042] Reference Figure 1 and Figure 2 In order to fix the two parts to be welded 01 on the supporting plate 3, the automobile bracket welding device also includes a push rod 4 and a driving unit 5. The number of the push rods 4 is at least one group, and a placement area is formed between the two push rods 4 in the same group. The push rod 4 has at least two force application points, and the force application points on the two push rods 4 act on the parts to be welded 01 along the moving direction of the push rod 4, so that the two parts to be welded 01 are abutted and fixed.

[0043] Reference Figure 2 and Figure 3 The driving unit 5 is connected to the supporting plate 3, and the driving unit 5 is connected to the pushing rod 4, which is used to change the distance between the two pushing rods 4 in the same group; specifically, the driving unit 5 includes two driving cylinders 51 and a plurality of sliding guide blocks 52, the driving cylinder 51 is bolted to the supporting plate 3, and the piston rod of the driving cylinder 51 is bolted to the pushing rod 4, the sliding guide block 52 is welded and fixed to the pushing rod 4, and the sliding guide block 52 is slidably connected to the supporting plate 3; the distance between the two pushing rods 4 can be changed by the driving unit 5, and then the abutment and fixation of the two parts to be welded 01 can be achieved by the pushing rod 4, so as to facilitate welding. Since there is no need to clamp and fix the parts to be welded 01 at multiple positions and unlock them at multiple positions, the time for assembling and disassembling the parts to be welded 01 is shortened to improve the welding processing efficiency of the automobile bracket.

[0044] Reference Figure 2 In some embodiments of the present application, the shape of the push rod 4 is adapted to the shape of the component to be welded 01, so as to quickly achieve the matching of the push rod 4 and the component to be welded 01, thereby improving the welding processing efficiency of the automobile bracket.

[0045] Reference Figure 4In some other embodiments of the present application, a plurality of force rods 6 are slidably connected to the push rod 4, and an adjusting spring 7 is sleeved on the force rod 6. The adjusting spring 7 is welded and fixed to the push rod 4 and the force rod 6 at the same time, and the sliding direction of the force rod 6 is consistent with the axial direction of the piston rod of the driving cylinder 51. The plurality of force rods 6 are distributed along the long side direction of the push rod 4, and the adjusting springs 7 apply force to the force rod 6 so that the force rod 6 slides toward one side of the other push rod 4; the force rod 6 and the adjusting spring 7 cooperate to provide a certain relative position change space for the component 01 to be welded during the welding process, on the premise of achieving the abutment of the two components 01 to be welded for easy welding, thereby avoiding the situation where the welding internal stress is excessive due to the complete fixation of the component 01 to be welded during the welding process, thereby improving the welding quality of the automobile bracket, and through the self-adaptation of the adjusting spring 7, the plurality of force rods 6 can also be adapted to components 01 to be welded of different shapes.

[0046] Reference Figure 5 In order to realize the simultaneous welding process of the automobile bracket and the loading of the part to be welded 01, and while the automobile bracket is being welded, the heat emitted is transferred to the part to be welded 01 through the supporting plate 3, which is equivalent to preheating the part to be welded 01 before welding. It not only makes full use of the heat generated during welding, but also effectively reduces the welding thermal deformation and cooling rate, and improves the welding quality. The supporting plate 3 is rotatably connected to the mounting base 1, and the rotation axis of the supporting plate 3 is horizontally arranged. There is at least one group of push rods 4 on the opposite sides of the supporting plate 3. In the present application, there are two groups of push rods 4 on the supporting plate 3, and the two groups of push rods 4 are respectively located on the opposite sides of the supporting plate 3. By rotating the supporting plate 3, the two groups of push rods 4 can be switched between the loading station and the welding station.

[0047] Reference Figure 6 Specifically, the supporting plate 3 includes a mounting frame 31 and a plurality of support rods 32. Two vertical fixing rods are vertically welded on the mounting base 1. The mounting frame 31 is rotatably connected to one end of the vertical fixing rod away from the mounting base 1. The support rods 32 are welded and fixed to the mounting frame 31. The sliding guide block 52 is slidably connected to the mounting frame 31. The plurality of support rods 32 are vertically distributed vertically and horizontally in the mounting frame 31 to form a plurality of construction cavities, so that the welding robot 2 can complete the comprehensive welding operation of the welding area through the construction cavity without flipping the component 01 to be welded, thereby improving the welding processing efficiency.

[0048] Reference Figure 6In order to reduce the deformation of the support rod 32 after being heated while ensuring its thermal conductivity, the support rod 32 is hollow and the inner cavity of the support rod 32 is filled with thermally conductive material. When welding the component 01 to be welded at the welding station, the heat generated is transferred to the component 01 to be welded at the loading station through the support rod 32, which is equivalent to preheating the component 01 to be welded before welding, thereby improving the welding quality of the automobile bracket. In the present application, the thermally conductive material can be thermally conductive metal particles, thermally conductive plastic particles, thermally conductive fins or thermally conductive graphite particles. In the present embodiment, the thermally conductive material filled is provided with thermally conductive metal particles.

[0049] The implementation principle of a vehicle bracket welding device in an embodiment of the present application is as follows: two components 01 to be welded are placed on a supporting plate 3, and the force points of the components 01 to be welded are located on the movement trajectory of the force application points on the push rod 4; force is applied to the two push rods 4 by the driving unit 5, and the push rods 4 make the two components 01 to be welded approach each other until the welding areas abut; then the supporting plate 3 is rotated, so that the fixed components 01 to be welded are rotated to the welding station, and at this time, the welding area is welded by the welding robot 2 until the two components 01 to be welded are welded to obtain a vehicle bracket, and while welding, the next component 01 to be welded is fixed at the loading station, and after the welding process of the vehicle bracket is completed, the two push rods 4 under the supporting plate 3 are moved toward the side away from each other by the driving unit 5, so that the vehicle bracket can be unlocked and dropped.

[0050] In a second aspect, an embodiment of the present application discloses a welding process for an automobile bracket.

[0051] Reference Figure 1-Figure 6 A vehicle bracket welding process is implemented by using the vehicle bracket welding device disclosed in the first aspect of the embodiment of the present application, comprising: S1: Place two parts to be welded 01 on the support plate 3, and make the force points of the parts to be welded 01 located on the motion trajectory of the force application point on the push rod 4; S2: applying force to the two push rods 4 through the driving unit 5, so that the push rods 4 bring the two parts 01 to be welded closer to each other until the welding areas abut against each other; S3: The welding robot 2 performs welding on the welding area until the two parts to be welded 01 are welded to obtain the automobile bracket.

[0052] The welding robot 2 and the supporting plate 3 can be installed through the mounting base 1. The supporting plate 3 can provide sliding support for the component to be welded 01. The driving unit 5 can change the distance between the two push rods 4, and then the two components to be welded 01 can be abutted and fixed by the push rods 4 to facilitate welding. Since there is no need to clamp and unlock the component to be welded 01 at multiple positions, the time for assembling and disassembling the component to be welded 01 is shortened to improve the welding processing efficiency of the automobile bracket.

[0053] Furthermore, in order to facilitate the welding robot 2 to complete the comprehensive welding operation of the welding area through the construction cavity, there is no need to flip the part to be welded 01, thereby improving the welding processing efficiency, a plurality of construction cavities are pre-processed on the support plate 3, and the relative position of the part to be welded 01 and the support plate 3 is adjusted by the driving unit 5 before welding by the welding robot 2 in step S3 until the welding area is in the construction cavity area on the support plate 3, so that the welding robot 2 can pass through the construction cavity from top to bottom to achieve complete welding of the welding area.

[0054] Furthermore, the support plate 3 is rotatably connected to the mounting base 1, the rotation axis of the support plate 3 is horizontally arranged, and the push rods 4 on opposite sides of the support plate 3 are at least one group. S1: Place two parts to be welded 01 on the support plate 3, and make the force points of the parts to be welded 01 located on the motion trajectory of the force application point on the push rod 4; S2: applying force to the two push rods 4 through the driving unit 5, so that the push rods 4 bring the two parts 01 to be welded closer to each other until the welding areas abut against each other; S3: rotating the support plate 3 so that the components 01 to be welded are moved to the welding station, and fixing the next group of components 01 to be welded at the loading station on the support plate 3; S4: The welding robot 2 performs welding on the welding area until the two parts to be welded 01 are welded to obtain the automobile bracket, and the driving unit 5 of the welding station causes the automobile bracket to lose the limit of the push rod 4, and the automobile bracket falls into the collection frame due to gravity; S5: Repeat steps S3 and S4 until all the automobile brackets are welded.

[0055] By means of the flippable support plate 3, in cooperation with a plurality of sets of push rods 4, the welding process of the automobile bracket and the loading of the component 01 to be welded can be carried out simultaneously. Moreover, while the automobile bracket is being welded, the heat emitted is transferred to the component 01 to be welded through the support plate 3, which is equivalent to preheating the component 01 to be welded before welding. This not only makes full use of the heat generated during welding, but also effectively reduces the thermal deformation and cooling rate of welding, thereby improving the welding quality.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automobile bracket welding device, characterized in that: include: A mounting base (1), wherein a welding robot (2) is arranged on the mounting base (1); A supporting plate (3), the supporting plate (3) being connected to the mounting base (1), and the supporting plate (3) being located on one side of the welding robot (2); At least one group of push rods (4), a placement area is formed between two of the push rods (4) in the same group, and the push rods (4) have at least two force application points, and the force application points on the two push rods (4) act on the parts to be welded (01) so that the two parts to be welded (01) abut against each other; At least one driving unit (5) for changing the distance between the two push rods (4), the driving unit (5) being connected to the supporting plate (3), and the driving unit (5) being connected to the push rod (4).

2. The automobile bracket welding device according to claim 1, characterized in that: The push rod (4) is slidably connected to a plurality of force rods (6), the force rods (6) are sleeved with adjustment springs (7), and the adjustment springs (7) are simultaneously connected to the push rod (4) and the force rods (6).

3. The automobile bracket welding device according to claim 1, characterized in that: The shape of the push rod (4) is adapted to the shape of the component (01) to be welded.

4. The automobile bracket welding device according to any one of claims 2-3, characterized in that: The support plate (3) is rotatably connected to the mounting base (1), the rotation axis of the support plate (3) is arranged horizontally, and there is at least one group of push rods (4) on opposite sides of the support plate (3).

5. The automobile bracket welding device according to claim 4, characterized in that: The support plate (3) comprises a mounting frame (31) and a plurality of support rods (32); the mounting frame (31) is rotatably connected to the mounting base (1); and the support rods (32) are connected to the mounting frame (31) to form a plurality of construction cavities.

6. The automobile bracket welding device according to claim 5, characterized in that: The support rod (32) is hollow and filled with heat-conducting material.

7. The automobile bracket welding device according to claim 1, characterized in that: The driving unit (5) comprises: Two driving cylinders (51), wherein the driving cylinders (51) are connected to the supporting plate (3), and the piston rods of the driving cylinders (51) are connected to the pushing rod (4); A plurality of sliding guide blocks (52), wherein the sliding guide blocks (52) are connected to the push rod (4), and the sliding guide blocks (52) are slidably connected to the support plate (3).

8. A welding process for an automobile bracket, characterized in that: The automobile bracket welding device according to any one of claims 1 to 7 is used to complete the process, comprising: Placing two parts to be welded (01) on a supporting plate (3), and making the force points of the parts to be welded (01) be located on the movement track of the force application point on the push rod (4); A driving unit (5) applies force to the two push rods (4), so that the push rods (4) bring the two parts to be welded (01) closer to each other until the welding areas abut against each other; The welding area is welded by a welding robot (2) until the two parts to be welded (01) are welded to obtain an automobile bracket.

9. The automobile bracket welding process according to claim 8, characterized in that: A plurality of construction cavities are pre-processed on the support plate (3), and before welding, the relative position of the component to be welded (01) and the support plate (3) is adjusted by a driving unit (5) until the welding area is located in the construction cavity area on the support plate (3), so that the welding robot (2) can pass through the construction cavity from top to bottom to achieve complete welding of the welding area.

10. The automobile bracket welding process according to claim 9, characterized in that: The support plate (3) is rotatably connected to the mounting base (1), the rotation axis of the support plate (3) is horizontally arranged, and there is at least one group of push rods (4) on opposite sides of the support plate (3). After the first group of parts to be welded (01) are abutted and fixed, the support plate (3) is rotated, and then the next group of parts to be welded (01) are abutted and fixed when the welding robot (2) is welding.

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