An arc welding fixture for automobile bumper processing

Abstract

The present invention discloses an arc welding fixture for processing automobile bumpers, comprising an operating table, a processing table, supporting legs, a flipping mechanism, and a parts assembly welding mechanism, wherein the supporting side panels are symmetrically fixedly connected to the two ends of the operating table, a first driving device is installed on the outer wall of one of the supporting side panels, the two ends of the driving rod are rotatably connected to the inner walls of the two supporting side panels, and one end of the driving rod is fixedly connected to the output end of the first driving device, two fixed sleeves are symmetrically fixedly sleeved on the outer walls of the driving rod, a positioning assembly is installed on the outer walls of the fixed sleeves, and the parts assembly welding mechanism is installed on the processing table. In this way, it is possible to solve the problem of manually adjusting the positions of the anti-collision beam and the energy absorption box to ensure that they can be accurately aligned during welding. This process is both time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustments of tooling equipment.

Description

Technical Field

[0001] The invention relates to the technical field of arc welding fixtures, in particular to an arc welding fixture for processing automobile bumpers. Background Art

[0002] In existing automobile manufacturing processes, arc welding is typically used to connect the bumper's anti-collision beam and energy absorption box. These two components play a crucial role in the bumper's structure: the anti-collision beam is used to withstand the force transmitted during a collision and protect the vehicle body from external impact, while the energy absorption box absorbs the impact energy through its compressible design, thereby reducing damage to the vehicle body. Because the anti-collision beam and energy absorption box must form a strong and reliable connection, the welding quality of the two during the production process directly affects the safety and durability of the vehicle.

[0003] At present, traditional welding methods usually use multiple workstations and manual adjustment to complete the assembly and welding of anti-collision beams and energy absorption boxes. Specifically, anti-collision beams and energy absorption boxes generally need to be docked and clamped by manual operation during the manufacturing process, and the positions of anti-collision beams and energy absorption boxes usually need to be manually adjusted to ensure that they can be accurately aligned during welding. This process is time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustment of tooling equipment. In addition, on traditional production lines, the welding of anti-collision beams and energy absorption boxes usually needs to be completed between multiple workstations, and each workstation may involve multiple adjustments to their positions and angles, which not only increases the production cycle, but may also lead to inefficiency and increased production costs. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the present invention is to propose an arc welding fixture for automobile bumper processing, which can solve the problem of manually adjusting the position of the anti-collision beam and the energy absorption box to ensure that they can be precisely aligned during welding. This process is time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustment of tooling equipment. In addition, on traditional production lines, the welding of anti-collision beams and energy absorption boxes usually needs to be completed between multiple workstations, and each workstation may involve multiple adjustments to their positions and angles, which not only increases the production cycle, but may also lead to low efficiency and increased production costs.

[0006] To achieve the above-mentioned purpose, the present invention proposes an arc welding fixture for processing automobile bumpers, comprising an operating table, a processing table, a supporting foot, a flipping mechanism and a parts assembly welding mechanism, wherein the processing table is fixedly connected to one side of the operating table, the supporting foot is symmetrically fixedly connected to the bottom side of the operating table, the flipping mechanism comprises a supporting side plate, a first driving device, a driving rod, a fixed sleeve and a positioning assembly, wherein the supporting side plates are symmetrically fixedly connected to the two ends of the operating table, the first driving device is installed on the outer wall of one of the supporting side plates, the two ends of the driving rod are rotatably connected to the inner walls of the two supporting side plates, and one end of the driving rod is fixedly connected to the output end of the first driving device, the two fixed sleeves are symmetrically fixedly sleeved on the outer wall of the driving rod, the positioning assembly is installed on the outer wall of the fixed sleeve, and the parts assembly welding mechanism is installed on the processing table.

[0007] The arc welding fixture for automobile bumper processing of the present invention starts the first driving device to drive the driving rod to rotate, and then under the action of the fixed sleeve, it can drive the anti-collision beam on the positioning assembly to flip, thereby realizing the mutual interference connection between the anti-collision beam and the energy absorption box, and finally the connection is efficiently welded by the welding device in the parts assembly welding mechanism, thereby solving the need to manually adjust the position of the anti-collision beam and the energy absorption box to ensure that they can be accurately aligned during welding. This process is time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustment of tooling equipment. In addition, on traditional production lines, the welding of anti-collision beams and energy absorption boxes usually needs to be completed between multiple workstations, and each workstation may involve multiple adjustments to their positions and angles, which not only increases the production cycle, but may also lead to low efficiency and increased production costs.

[0008] In addition, the arc welding fixture for automobile bumper processing proposed above according to the present invention may also have the following additional technical features:

[0009] Specifically, the positioning assembly includes a support arm, a support sleeve, a clamping sleeve, a second drive device and a clamping plate, wherein one end of the support arm is fixedly connected to the outer wall of the fixed sleeve, one end of the support sleeve is slidably sleeved on the other end of the support arm, the clamping sleeve is fixedly connected to the other end of the support sleeve, the second drive device is installed on the top of the clamping sleeve, and the output end of the second drive device passes through the top of the clamping sleeve and is fixedly connected to the top of the clamping plate.

[0010] Specifically, the parts assembly welding mechanism includes a third driving device, a limiting sleeve, a limiting rod, a supporting platform, an assembly component and a welding component, wherein the third driving device is installed on the top of the processing table, one end of the plurality of limiting sleeves is fixedly connected to the four corners of the top of the processing table, one end of the limiting rod slides through the other end of the limiting sleeve, the supporting platform is fixedly connected to the other end of the limiting rod, the assembly component is provided in two groups, and is symmetrically installed on the top of the supporting platform, and the welding component is installed on one side of the top of the supporting platform.

[0011] Specifically, the assembly component includes a placement shell, a partition block, an adjusting screw, a guide rod, a limit plate and a limit spring, wherein a slide groove is opened on one side of the top of the support platform, the partition block is fixedly connected to the middle end of the slide groove, the two placement shells are symmetrically slid and clamped on the slide groove, one end of the adjusting screw rod is threaded through the side wall of the support platform and is rotatably connected to one side of the partition block, the bottom of the placement shell is threadedly sleeved on the adjusting screw rod, one end of the two guide rods is symmetrically slid through the outer wall of the placement shell and is fixedly connected to one side of the limit plate, the limit spring is sleeved on the guide rod, and the two ends of the limit spring are respectively fixedly connected to the inner wall of the other end of the guide rod and the outer wall of the placement shell.

[0012] Specifically, a reinforcement sleeve is fixedly sleeved on the outer wall of the support arm, one end of the guide plate is fixedly connected to the outer wall of the reinforcement sleeve, and a guide groove matching the other end of the guide plate is opened on the inner wall of the support side plate.

[0013] Specifically, the processing table is an L-shaped structure, and the bottom of the processing table and the bottom of the supporting legs are located on the same horizontal plane.

[0014] Specifically, the outer wall of the support sleeve is threadedly connected with a plurality of positioning bolts in a circumferential array, and the outer wall of the other end of the support arm is provided with threaded holes matching the positioning bolts at equal intervals.

[0015] Specifically, the clamping surfaces of the clamping plate and the limiting plate are both fixedly connected with soft rubber pads.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1This is a schematic diagram of an arc welding fixture for processing an automobile bumper according to the present invention;

[0019] Figure 2 This is a schematic structural diagram of a support sleeve according to an embodiment of the present invention;

[0020] Figure 3 A schematic structural diagram of a positioning assembly according to an embodiment of the present invention;

[0021] Figure 4 A schematic structural diagram of an assembly component according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic structural diagram of a third driving device according to an embodiment of the present invention;

[0023] Figure 6 For an embodiment of the present invention Figure 5 A schematic diagram of the structure enlarged in the middle;

[0024] Figure 7 For an embodiment of the present invention Figure 2 Schematic diagram of the structure enlarged at point B.

[0025] As shown in the figure:

[0026] 1. Operating table; 2. Processing table; 3. Support legs;

[0027] 4. Flipping mechanism; 41. Support side plate; 411. Guide groove; 42. First drive device; 43. Drive rod; 44. Fixed sleeve; 45. Positioning assembly; 451. Support arm; 4512. Guide plate; 452. Support sleeve; 4521. Positioning bolt; 453. Clamping sleeve; 454. Second drive device; 455. Clamping plate;

[0028] 5. Parts assembly and welding mechanism; 51. Third driving device; 52. Limit sleeve; 53. Limit rod; 54. Support platform; 55. Assembly component; 551. Placement shell; 552. Separation block; 553. Adjustment screw; 554. Guide rod; 555. Limit plate; 556. Limit spring; 56. Welding device. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0030] The arc welding fixture for machining an automobile bumper according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0031] like Figure 1-Figure 7 As shown, the arc welding fixture for processing an automobile bumper according to an embodiment of the present invention may include an operating table 1, a processing table 2, supporting legs 3, a turning mechanism 4 and a parts assembly welding mechanism 5.

[0032] The processing table 2 is fixedly connected to one side of the operating table 1 , and the supporting legs 3 are symmetrically fixedly connected to one side of the bottom of the operating table 1 .

[0033] Furthermore, the processing table 2 is an L-shaped structure, and the bottom of the processing table 2 and the bottom of the supporting legs 3 are located on the same horizontal plane.

[0034] It should be noted that the operating surface of the processing table 2 described in this embodiment is a sunken structure, and the sunken height is the same as the height of the inner wall of the processing table 2.

[0035] The turning mechanism 4 includes a supporting side plate 41 , a first driving device 42 , a driving rod 43 , a fixing sleeve 44 and a positioning assembly 45 .

[0036] Among them, the supporting side panels 41 are symmetrically fixedly connected to the two ends of the operating table 1, the first driving device 42 is installed on the outer wall of one of the supporting side panels 41, the two ends of the driving rod 43 are rotatably connected to the inner walls of the two supporting side panels 41, and one end of the driving rod 43 is fixedly connected to the output end of the first driving device 42.

[0037] Furthermore, a reinforcement sleeve 4511 is fixedly sleeved on the outer wall of the support arm 451, and one end of the guide plate 4512 is fixedly connected to the outer wall of the reinforcement sleeve 4511. The inner wall of the support side plate 41 is provided with a guide groove 411 that matches the other end of the guide plate 4512.

[0038] It should be noted that the first driving device 42 described in this embodiment is a driving motor.

[0039] The two fixing sleeves 44 are symmetrically fixedly sleeved on the outer wall of the driving rod 43 , and the positioning assembly 45 is installed on the outer wall of the fixing sleeve 44 .

[0040] It should be noted that the first driving device 42 described in this embodiment can drive the driving rod 43 to rotate 90 degrees left and right.

[0041] The parts assembly welding mechanism 5 is installed on the processing table 2.

[0042] Specifically, in the spare parts production workshop of the automobile enterprise, especially in the bumper assembly work, in order to make the bumper's anti-collision beam and energy absorption box more efficiently welded, the supporting side panels 41 are symmetrically fixedly connected to the two ends of the operating table 1, the first driving device 42 is installed on the outer wall of one of the supporting side panels 41, and the two ends of the driving rod 43 are rotatably connected to the inner walls of the two supporting side panels 41, and one end of the driving rod 43 is fixedly connected to the output end of the first driving device 42, and the two fixed sleeves 44 are symmetrically fixedly sleeved on the outer wall of the driving rod 43, and the positioning component 45 is installed on the outer wall of the fixed sleeve 44. The parts assembly welding mechanism 5 is installed on the processing table 2, and then the anti-collision beam can be clamped and fixed by the positioning component 45. At the same time, the positioning component 45 can also be adjusted accordingly according to the size of the anti-collision beam. After the anti-collision beam is assembled, the position of the energy absorption box can be adjusted according to the welding position of the energy absorption box and the anti-collision beam. Corresponding adjustments are made on the cam, and after the adjustments are completed, the first driving device 42 is started to drive the driving rod 43 to rotate, and then under the action of the fixed sleeve 44, the anti-collision beam on the positioning assembly 45 can be driven to flip over, thereby realizing the mutual interference connection between the anti-collision beam and the energy absorption box, and finally the welding device in the parts assembly welding mechanism 5 is used to efficiently weld the connection, thereby solving the need to manually adjust the position of the anti-collision beam and the energy absorption box to ensure that they can be accurately aligned during welding. This process is time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustments of tooling equipment. In addition, on traditional production lines, the welding of anti-collision beams and energy absorption boxes usually needs to be completed between multiple workstations, and each workstation may involve multiple adjustments to its position and angle, which not only increases the production cycle, but may also lead to low efficiency and increased production costs.

[0043] In one embodiment of the present invention, Figure 1-Figure 7 As shown, the positioning assembly 45 includes a support arm 451, a support sleeve 452, a clamping sleeve 453, a second drive device 454 and a clamping plate 455, wherein one end of the support arm 451 is fixedly connected to the outer wall of the fixed sleeve 44, one end of the support sleeve 452 is slidably sleeved on the other end of the support arm 451, the clamping sleeve 453 is fixedly connected to the other end of the support sleeve 452, the second drive device 454 is installed on the top of the clamping sleeve 453, and the output end of the second drive device 454 passes through the top of the clamping sleeve 453 and is fixedly connected to the top of the clamping plate 455.

[0044] Furthermore, if Figure 1 As shown, the outer wall of the support sleeve 452 is threadedly connected with multiple positioning bolts 4521 in a circumferential array, and the outer wall of the other end of the support arm 451 is evenly spaced with threaded holes matching the positioning bolts 4521.

[0045] It should be noted that the second driving device 454 described in this embodiment is a cylinder.

[0046] Specifically, in order to be able to effectively clamp and fix the anti-collision beam of the bumper, one end of the support arm 451 is fixedly connected to the outer wall of the fixed sleeve 44, one end of the support sleeve 452 is slidably sleeved on the other end of the support arm 451, and the clamping sleeve 453 is fixedly connected to the other end of the support sleeve 452. The second driving device 454 is installed on the top of the clamping sleeve 453, and the output end of the second driving device 454 passes through the top of the clamping sleeve 453 and is fixedly connected to the top of the clamping plate 455. Then, according to the size of the anti-collision beam, the positions of the two support sleeves 452 are adjusted, and the two clamping sleeves 453 can be driven to adjust the positions accordingly. Then, the two ends of the anti-collision beam are respectively placed inside the clamping sleeve 453, and then by starting the second driving device 454, it drives the clamping plate 455 to clamp and fix the ends of the anti-collision beam, thereby ensuring that the structure is more stable when the anti-collision beam is flipped.

[0047] In one embodiment of the present invention, Figure 1-Figure 7 As shown, the part assembly welding mechanism 5 includes a third driving device 51, a limiting sleeve 52, a limiting rod 53, a supporting platform 54, an assembly component 55 and a welding device 56, wherein the third driving device 51 is installed on the top of the processing table 2, one end of multiple limiting sleeves 52 is fixedly connected to the four corners of the top of the processing table 2, one end of the limiting rod 53 slides through the other end of the limiting sleeve 52, the supporting platform 54 is fixedly connected to the other end of the limiting rod 53, two groups of assembly components 55 are provided, and are symmetrically installed on the top of the supporting platform 54, and the welding component 56 is installed on one side of the top of the supporting platform 54.

[0048] It should be noted that the third driving device 51 described in this embodiment is a hydraulic cylinder.

[0049] Specifically, when the first driving device 42 drives the driving rod 43 to rotate, the anti-collision beam can be driven to rotate 90 degrees under the clamping action of the positioning assembly 45, and since the third driving device 51 is installed on the top of the processing table 2, one end of a plurality of limiting sleeves 52 is respectively fixedly connected to the four corners of the top of the processing table 2, one end of the limiting rod 53 slides through the other end of the limiting sleeve 52, and the supporting platform 54 is fixedly connected to the other end of the limiting rod 53. There are two groups of assembly components 55, which are symmetrically installed on the top of the supporting platform 54, and the welding assembly 56 is installed on one side of the top of the supporting platform 54. Therefore, before the anti-collision beam is flipped over, the third driving device 51 can be started first to drive the supporting platform 54 to lower its height, and then the energy absorption box can be installed on the assembly component 55, and then the position of the assembly component 55 can be adjusted. Finally, after the anti-collision beam is flipped over, the third driving device 51 can be started again to increase the height of the supporting platform 54, thereby realizing that the energy absorption box is in contact with the anti-collision beam, thereby avoiding the inconvenience of manual splicing.

[0050] In one embodiment of the present invention, Figure 1-Figure 7 As shown, the assembly component 55 includes a placement shell 551, a partition block 552, an adjusting screw rod 553, a guide rod 554, a limit plate 555 and a limit spring 556, wherein a slide groove is opened on one side of the top of the support platform 54, the partition block 552 is fixedly connected to the middle end of the slide groove, the two placement shells 551 are symmetrically slid and clamped on the slide groove, one end of the adjusting screw rod 553 is threaded through the side wall of the support platform 54, and is rotatably connected to one side of the partition block 552, the bottom of the placement shell 551 is threadedly sleeved on the adjusting screw rod 553, one end of the two guide rods 554 slides symmetrically through the outer wall of the placement shell 551, and is fixedly connected to one side of the limit plate 555, the limit spring 556 is sleeved on the guide rod 554, and the two ends of the limit spring 556 are respectively fixedly connected to the inner wall of the other end of the guide rod 554 and the outer wall of the placement shell 551.

[0051] Furthermore, if Figure 1 As shown, the clamping surfaces of the clamping plate 455 and the limiting plate 555 are both fixedly connected with soft rubber pads.

[0052] It should be noted that, in this embodiment, a protrusion is fixedly connected to the bottom of the placement housing 551 , and the protrusion is threadedly sleeved on the adjusting screw rod 553 .

[0053] Specifically, in order to conveniently adjust the position of the energy absorption box, a sliding groove is provided on one side of the top of the supporting platform 54, and the dividing block 552 is fixedly connected to the middle end of the sliding groove, and the two placing shells 551 are symmetrically slidably clamped on the sliding groove, and one end of the adjusting screw rod 553 is threaded through the side wall of the supporting platform 54 and rotatably connected to one side of the dividing block 552, and the bottom of the placing shell 551 is threadedly sleeved on the adjusting screw rod 553, and one end of the two guide rods 554 slides symmetrically through the outer wall of the placing shell 551 and is fixedly connected to one side of the limit plate 555, and the limit spring 556 is sleeved on the guide rod 554, and the two ends of the limit spring 556 are respectively fixedly connected to the inner wall of the other end of the guide rod 554 and the outer wall of the placing shell 551, and then the two adjusting screw rods 553 are rotated to drive the placing shell 551 to adjust its position. At the same time, through the limit spring 556, the limit plate 555 can be driven to effectively clamp the energy absorption box.

[0054] It should be understood that a scale is fixedly connected to the supporting platform 54 so that the position adjustment of the energy absorbing box is more accurate.

[0055] In summary, the arc welding fixture for automobile bumper processing of the embodiment of the present invention starts the first driving device 42 to drive the driving rod 43 to rotate, and then under the action of the fixed sleeve 44, the anti-collision beam on the positioning assembly 45 can be driven to flip, thereby realizing the mutual interference connection between the anti-collision beam and the energy absorption box, and finally the welding device in the parts assembly welding mechanism 5 is used to efficiently weld the connection, thereby solving the need to manually adjust the position of the anti-collision beam and the energy absorption box to ensure that they can be accurately aligned during welding. This process is time-consuming and labor-intensive, and is prone to unstable welding or loose connections due to differences in operators and inaccurate adjustment of tooling equipment. In addition, on traditional production lines, the welding of anti-collision beams and energy absorption boxes usually needs to be completed between multiple workstations, and each workstation may involve multiple adjustments to their positions and angles, which not only increases the production cycle, but may also lead to low efficiency and increased production costs.

[0056] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0057] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. An arc welding fixture for automobile bumper processing, characterized in that: It comprises an operating table (1), a processing table (2), supporting legs (3), a turning mechanism (4) and a parts assembly and welding mechanism (5), wherein: The processing table (2) is fixedly connected to one side of the operating table (1), and the supporting legs (3) are symmetrically fixedly connected to one side of the bottom of the operating table (1); The turning mechanism (4) comprises a supporting side plate (41), a first driving device (42), a driving rod (43), a fixing sleeve (44) and a positioning assembly (45), wherein: The supporting side plates (41) are symmetrically fixedly connected to the two ends of the operating table (1); the first driving device (42) is installed on the outer wall of one of the supporting side plates (41); the two ends of the driving rod (43) are rotatably connected to the inner walls of the two supporting side plates (41); and one end of the driving rod (43) is fixedly connected to the output end of the first driving device (42); The two fixed sleeves (44) are symmetrically fixedly sleeved on the outer wall of the driving rod (43), and the positioning assembly (45) is installed on the outer wall of the fixed sleeve (44); The parts assembly welding mechanism (5) is installed on the processing table (2); The positioning assembly (45) includes a support arm (451), a support sleeve (452), a clamping sleeve (453), a second drive device (454) and a clamping plate (455), wherein: One end of the support arm (451) is fixedly connected to the outer wall of the fixed sleeve (44), one end of the support sleeve (452) is slidably sleeved on the other end of the support arm (451), and the clamping sleeve (453) is fixedly connected to the other end of the support sleeve (452); The second driving device (454) is installed on the top of the clamping sleeve (453), and the output end of the second driving device (454) passes through the top of the clamping sleeve (453) and is fixedly connected to the top of the clamping plate (455); The parts assembly welding mechanism (5) comprises a third driving device (51), a limiting sleeve (52), a limiting rod (53), a supporting platform (54), an assembly component (55) and a welding component (56), wherein: The third driving device (51) is installed on the top of the processing table (2), one end of the plurality of limiting sleeves (52) is fixedly connected to the four corners of the top of the processing table (2), one end of the limiting rod (53) slides through the other end of the limiting sleeve (52), and the supporting platform (54) is fixedly connected to the other end of the limiting rod (53); The assembly components (55) are provided in two groups and are symmetrically mounted on the top of the support platform (54); The welding assembly (56) is installed on one side of the top of the supporting platform (54); The assembly component (55) includes a placement housing (551), a partition block (552), an adjustment screw (553), a guide rod (554), a limit plate (555) and a limit spring (556), wherein: A slide groove is provided on one side of the top of the supporting platform (54), and the partition block (552) is fixedly connected to the middle end of the slide groove; The two placement shells (551) are symmetrically slidably engaged with the slide groove, one end of the adjusting screw rod (553) is threadedly passed through the side wall of the support platform (54) and is rotatably connected to one side of the partition block (552), and the bottom of the placement shell (551) is threadedly sleeved on the adjusting screw rod (553); One end of the two guide rods (554) symmetrically slides through the outer wall of the placement shell (551) and is fixedly connected to one side of the limiting plate (555); The limit spring (556) is sleeved on the guide rod (554), and the two ends of the limit spring (556) are fixedly connected to the inner wall of the other end of the guide rod (554) and the outer wall of the placement shell (551) respectively.

2. The arc welding fixture for automobile bumper processing according to claim 1, characterized in that: The outer wall of the support arm (451) is fixedly sleeved with a reinforcement sleeve (4511), the outer wall of the reinforcement sleeve (4511) is fixedly connected to one end of the guide plate (4512), and the inner wall of the support side plate (41) is provided with a guide groove (411) matching the other end of the guide plate (4512).

3. The arc welding fixture for automobile bumper processing according to claim 1, characterized in that: The processing table (2) is an L-shaped structure, and the bottom of the processing table (2) and the bottom of the supporting legs (3) are located on the same horizontal plane.

4. The arc welding fixture for automobile bumper processing according to claim 1, characterized in that: The outer wall of the support sleeve (452) is threadedly connected to a plurality of positioning bolts (4521) in a circumferential array, and the outer wall of the other end of the support arm (451) is provided with threaded holes matching the positioning bolts (4521) at equal intervals.

5. The arc welding fixture for automobile bumper processing according to claim 1, characterized in that: The clamping surfaces of the clamping plate (455) and the limiting plate (555) are both fixedly connected with soft rubber pads.

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