Automobile control arm automatic welding device

Abstract

The application discloses an automatic welding device for automobile control arms, which comprises a welding mechanical arm and a welding fixing assembly. The welding fixing assembly is provided with a base, a rotating seat and pressure applying assemblies symmetrically arranged on the rotating seat. The base is provided with a first fixing arm and a second fixing arm. The rotating seat is composed of a connecting plate and rotating arms arranged at both ends of the connecting plate. The pressure applying assemblies comprise supporting seats, pressure applying seats, positioning rings and traction members. The automatic welding device for automobile control arms realizes automatic placement and taking out of the automobile control arms and completes automatic welding operation of the automobile control arms. The welding fixing assembly is used for limiting the automobile control arms, and the rotating seat in the welding fixing assembly can be rotated, so that the welding mechanical arm does not need to be moved, the operation steps are simplified, the welding efficiency is improved and the welding steps are reduced.

Description

Technical Field

[0001] This invention relates to welding technology, and more particularly to an automated welding device for automotive control arms. Background Technology

[0002] The control arm is part of the car suspension system. It is a guiding and force-transmitting element of the suspension system, which transmits various forces acting on the wheels to the car body and ensures that the wheels move along a certain trajectory. It has a great influence on the car's driving smoothness and handling stability, so the requirements for its related dimensions are also very high.

[0003] In the current manufacturing process of automotive control arms, the control arm contains a sleeve, inside which a bearing needs to be installed to enable vehicle steering. This sleeve must be welded to the control arm. Current automotive control arm welding requires multiple clamping components or cylinders to position and fix the control arm components, resulting in a complex structure, large size, and inconvenience for welding robotic arms, leading to complex welding trajectories. Furthermore, loading and unloading are inconvenient, and production efficiency and welding accuracy need improvement. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes an automated welding device for automotive control arms.

[0005] The technical solution of this invention is implemented as follows:

[0006] An automated welding device for automotive control arms, characterized in that it comprises:

[0007] A welding robotic arm, wherein a controller is mounted on the welding robotic arm, and a welding assembly is mounted at the lower end of the controller.

[0008] A welding fixing assembly that cooperates with a welding robotic arm includes a base, a rotating seat, and pressure-applying components symmetrically arranged on the rotating seat. The rotating seat is mounted on the base.

[0009] The base is equipped with a first fixed arm and a second fixed arm. A motor is mounted on the first fixed arm, and a first cylinder and a second cylinder are symmetrically arranged on the second fixed arm. Each of the first and second cylinders has a push plate. The first and second fixed arms are connected by a base plate, forming a rotating area for the rotating seat to rotate. The base plate has a discharge port with a discharge ramp.

[0010] The rotating seat consists of a connecting plate and rotating arms at both ends of the connecting plate. Each rotating arm has a rotating shaft, and the rotating seat is mounted on a base via the rotating shaft. The connecting plate has a bearing seat with an open-end movable groove in the middle. The connecting plate also has a sliding groove communicating with the movable groove. The bearing seat has symmetrical positioning blocks positioned on both sides of the movable groove.

[0011] The pressure application component includes:

[0012] Symmetrically arranged support bases, each support base having a support surface and a guide arc surface.

[0013] The pressure-applying seat has an internal hollow structure forming an installation chamber.

[0014] A positioning ring is installed inside the installation chamber, with a positioning chamber formed in the middle of the positioning ring. A rotating shaft is provided in the middle of the positioning chamber, and a first notch is provided on the positioning ring.

[0015] A winding assembly is installed inside the positioning chamber, with one end of the winding assembly mounted on a rotating shaft.

[0016] And a traction member, one end of which passes through the pressure seat and is connected to the support seat, and the other end is connected to the other end of the winding member through the first notch.

[0017] In this invention, the support base is provided with symmetrical movable holes, the movable holes are connected to the movable groove through through holes, the movable holes are provided with arc-shaped surfaces, and the through holes are located in the middle of the arc-shaped surfaces.

[0018] In this invention, the movable hole is provided with a plug, a first spring and a limiting arc head. The first spring is disposed between the plug and the limiting arc head. The limiting arc head contacts the arc surface and keeps the limiting arc head part entering the movable groove through the through hole.

[0019] In this invention, a pushing member is provided in the movable groove, the pushing member is provided with a mounting groove, a sliding rod is provided in the mounting groove, the sliding rod is disposed in the sliding groove, and symmetrically arranged cooperating rods are provided on the pushing member. The cooperating rods cooperate with the push plate and are disposed on both sides of the mounting groove.

[0020] In this invention, the positioning ring is provided with a movable disk, which is mounted on a rotating shaft. The movable disk is provided with a first fixing hole and a second fixing hole, the first fixing hole being close to the rotating shaft and the second fixing hole being away from the rotating shaft.

[0021] In this invention, the mounting chamber is further provided with a retaining member, the retaining member having a retaining chamber in the middle, the inner wall of the retaining chamber being provided with one-way teeth, the positioning ring and the winding member being disposed in the retaining chamber, the retaining member being provided with a second notch, and the traction member being disposed in the second notch.

[0022] In this invention, the movable disc is further provided with a fixing member, and the fixing member is provided with locking teeth that cooperate with the one-way teeth.

[0023] In this invention, the fixing member is provided with a first fixing rod, the movable plate is provided with a second fixing rod, the second fixing rod cooperates with the first fixing hole and / or the second fixing hole, and a tension spring is provided between the first fixing rod and the second fixing rod.

[0024] In this invention, the installation chamber is provided with a first blocking block and a second blocking block, and the installation chamber is also provided with a blocking surface that cooperates with the first blocking block and the second blocking block. A first sliding area is formed between the first blocking block and the blocking surface, and a second sliding area is formed between the second blocking block and the blocking surface. The first sliding area and the second sliding area are arranged opposite to each other. A second spring and a sliding seat are provided in the first sliding area. A traction member passage is formed between the first blocking block and the second blocking block. A pushing block is provided on the sliding seat. The pushing block is in contact with the second spring. The traction member is provided at the upper end of the sliding seat, and the pushing block is kept in contact with the traction member.

[0025] In this invention, an isolation block is provided at the second sliding area, and an adjustment member is provided in the middle of the isolation block, which is in contact with the pushing block.

[0026] The automated welding device for automotive control arms according to the present invention has the following advantages: It enables automated placement and removal of the automotive control arm, completing the automated welding operation. The control arm is limited by a welding fixing assembly, and the rotating seat within the welding fixing assembly only needs to rotate, eliminating the need for a moving welding robotic arm. This simplifies the operation, improves welding efficiency, and reduces the number of welding steps. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the automated welding device for automotive control arms according to the present invention.

[0028] Figure 2 for Figure 1 Schematic diagram of the welding components and welding fixing assembly in the diagram;

[0029] Figure 3 for Figure 2 Schematic diagram of the welding and fixing assembly structure;

[0030] Figure 4 for Figure 3 Exploded view;

[0031] Figure 5 for Figure 4 A schematic diagram of the rotating seat structure in the middle;

[0032] Figure 6 for Figure 4 A schematic diagram of the pusher and slide bar structure in the middle;

[0033] Figure 7 for Figure 4 A schematic diagram of the structure of the car control arm in the diagram;

[0034] Figure 8 for Figure 4 A schematic diagram of the plug, first spring, and limiting arc head structure in the middle;

[0035] Figure 9 for Figure 4 A schematic diagram of the pressure application component structure;

[0036] Figure 10 for Figure 9 A schematic diagram of the structure in another direction;

[0037] Figure 11 for Figure 9 Top view of the internal structure of the pressure seat in the middle;

[0038] Figure 12 for Figure 11 Internal structure diagram;

[0039] Figure 13 for Figure 12 A schematic diagram of the positioning ring, winding frame, and traction component.

[0040] In the diagram: 1. Welding robotic arm; 2. Welding fixing assembly; 3. Automotive control arm; 4. Gap; 5. Welding component; 6. Controller; 7. First welding rod; 8. Second welding rod; 9. Welding head; 10. Base; 11. Rotating seat; 12. Pressure application component; 13. First fixed arm; 14. Second fixed arm; 15. Motor; 16. Rotating shaft; 17. First cylinder; 18. Second cylinder; 19. Push plate; 20. Base plate; 21. Rotating area; 22. Discharge port; 23. Discharge ramp; 24. Connecting plate; 25. Rotating arm; 26. Bearing seat; 27. Movable groove; 28. Sliding groove; 29. ​​Positioning block; 30. Support seat; 31. Pressure application seat; 32. Positioning ring; 33. Retractor; 34. Traction component; 35. Pressure application area; 36. Support surface; 37. Guide arc surface; 38. Mounting chamber; 39. Positioning chamber; 40. Rotating shaft; 41. First notch; 42. Guide surface; 43. Sleeve; 44. Movable hole; 45. Through hole; 46. Arc Surface 46, plug 47, first spring 48, limiting arc head 49, cover plate 50, guide block 51, guide surface 52, main body 53, pushing part 54, mounting groove 55, slide rod 56, mating rod 57, contact surface 58, movable plate 59, first fixing hole 60, second fixing hole 61, retaining part 62, retaining chamber 63, one-way tooth 64, second notch 65, plane 66, fixing part 67, locking tooth 68, first fixing rod 69, second fixing rod 70, tension spring 71, first blocking block 72, second blocking block 73, blocking surface 74, first sliding area 75, second sliding area 76, second spring 77, sliding seat 78, channel 79, pushing block 80, isolation block 81, adjusting part 82, through hole 83, connecting arm 84, arc-shaped opening 85, elastic arm 86, limiting strip 87, limiting area 88, arc-shaped pressure space 89. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0042] like Figures 1 to 13 As shown, this automated welding device for automotive control arms of the present invention includes a welding robotic arm 1 and a welding fixing assembly 2. The welding robotic arm 1 is used to weld the automotive control arm 3 located on the welding fixing assembly 2. During welding, the welding fixing assembly 2 is kept in a rotating state, thereby driving the automotive control arm 3 to rotate, which facilitates the welding of the gap 4 of the automotive control arm 3. Meanwhile, the welding component 5 on the welding robotic arm 1 remains stationary during welding.

[0043] The welding robotic arm 1 is equipped with a controller 6, and a welding assembly 5 is located at the lower end of the controller 6. The controller 6 is used to control the welding assembly 5. The welding assembly 5 includes a first welding rod 7 and second welding rods 8 symmetrically arranged on both sides of the first welding rod 7. The first welding rod 7 has two welding heads 9, while the second welding rod 8 has only one welding head 9.

[0044] The welding and fixing assembly 2 includes a base 10, a rotating seat 11, and a pressure-applying component 12 symmetrically arranged on the rotating seat 11. The rotating seat 11 is mounted on the base 10. The base 10 remains stationary, while the rotating seat 11 can rotate on the base 10, causing the pressure-applying component 12 to rotate, and causing the vehicle control arm 3 located at the rotating seat 11 and the pressure-applying component 12 to rotate as well.

[0045] The base 10 is equipped with a first fixed arm 13 and a second fixed arm 14. A motor 15 is mounted on the first fixed arm 13, and the motor 15 is connected to a rotating shaft 16 on the rotating seat 11 to drive the rotating seat 11 to rotate. The second fixed arm 14 is equipped with a symmetrically arranged first cylinder 17 and second cylinder 18. Both the first cylinder 17 and the second cylinder 18 are equipped with push plates 19, which are used to detach the welded car control arm 3 from the rotating seat 11. The first fixed arm 13 and the second fixed arm 14 are connected by a base plate 20, forming a rotating area 21 between them for the rotating seat 11 to rotate. The base plate 20 is equipped with a discharge port 22, which has a discharge ramp 23. The detached car control arm 3 is discharged from the discharge port 22.

[0046] Two cylinders are installed, allowing the rotating seat 11 to drive the pressure application component 12 to push out the welded car control arm 3 from either end. This also reduces the number of rotations of the rotating seat 11, eliminating the need for resetting after rotation. This allows the unwelded car control arm 3 to be installed into the movable slot from both ends.

[0047] The rotating seat 11 consists of a connecting plate 24 and rotating arms 25 disposed at both ends of the connecting plate 24. A rotating shaft 16 is provided on each rotating arm 25, and the rotating seat 11 is mounted on the base 10 via the rotating shaft 16. A bearing seat 26 is provided on the connecting plate 24, with an open-end movable groove 27 formed in the middle of the bearing seat 26. A sliding groove 28 communicating with the movable groove 27 is provided on the connecting plate 24. Symmetrical positioning blocks 29 are provided on the bearing seat 26, and the positioning blocks 29 are disposed on both sides of the movable groove 27.

[0048] The pressure application assembly 12 includes a support base 30, a pressure application base 31, a positioning ring 32, a take-up member 33, and a traction member 34. The support base 30 is used to keep the pressure application base 31 in a suspended state, so that the pressure application base 31 applies pressure and limits the movement of the vehicle control arm 3 located in the middle pressure application area 35 of the support base 30. The positioning ring 32 is used to limit the position of the take-up member 33, and the traction member 34 is used to ensure that the pressure application base 31 is positioned on the support base 30.

[0049] The support base 30 is symmetrically arranged. The support base 30 is provided with a support surface 36 and a guide arc surface 37. The support surface 36 is used to support the traction member 34, while the guide arc surface 37 is used to guide the traction member 34.

[0050] The interior of the pressure seat 31 is hollowed out to form an installation chamber 38. The positioning ring 32 is set inside the installation chamber 38. The middle of the positioning ring 32 forms a positioning chamber 39. The middle of the positioning chamber 39 is provided with a rotating shaft 40. The positioning ring 32 is provided with a first notch 41.

[0051] An arc-shaped pressure space 89 is formed in the middle of the pressure seat 31. An inclined guide surface 42 is provided on the inner wall of the arc-shaped pressure space 89 to guide the pressure seat 31 to the sleeve 43.

[0052] The winding member 33 is disposed within the positioning chamber 39, and the winding member 33 is a spring. One end of the winding member 33 is mounted on the rotating shaft 40, and one end of the traction member 34 passes through the pressure seat 31 and is connected to the support seat 30, while the other end is connected to the other end of the winding member 33 through the first notch 41. When the pressure seat 31 is pushed by force, the traction member 34 is held in place to pull the winding member 33, causing the winding member 33 to be stretched and unfolded. This maintains the elastic potential energy of the winding member 33, making it easy to pull the traction member 34 back to its original position after the external force on the traction member 34 disappears.

[0053] The support base 26 is provided with symmetrical movable holes 44, which are connected to the movable groove 27 through through holes 45. An arc-shaped surface 46 is provided inside the movable hole 44, and the through hole 45 is located in the middle of the arc-shaped surface 46. A plug 47, a first spring 48, and a limiting arc head 49 are provided inside the movable hole 44. The first spring 48 is located between the plug 47 and the limiting arc head 49. The limiting arc head 49 contacts the arc-shaped surface 46, and a portion of the limiting arc head 49 is kept within the movable groove 27 through the through hole 45.

[0054] A cover plate 50 is provided on the pressure seat 31, and a guide block 51 is provided on the cover plate 50. The guide block 51 has a guide surface 52, which is arc-shaped and used to guide the main body 53 to push the guide block 51, thereby causing the guide block 51 to drive the pressure seat 31 to move. This keeps the traction member 34 pulling the winding member 33 and keeps the pressure seat 31 moving towards both ends of the movable groove 27, so that the unwelded car control arm 3 can enter the movable groove 27. At the same time, it keeps the sleeve 43 in the arc-shaped pressure space 89. The traction member 34 is not elastic.

[0055] A pusher 54 is provided within the movable groove 27. The pusher 54 is used to push the welded car control arm 3 out of the movable groove 27 and allow it to fall from the discharge port 22. The pusher 54 has a mounting groove 55, within which a slide rod 56 is provided. The slide rod 56 is disposed within a sliding groove 28 and can limit the sliding position of the pusher 54. The pusher 54 has symmetrically arranged mating rods 57, which mate with the push plate 19 and are located on both sides of the mounting groove 55. The first cylinder 17 and the second cylinder 18 are used to push the push plate 19, causing the push plate 19 to push the mating rods 57, thereby keeping the pusher 54 sliding within the slide rod 56 and the movable groove 27, and pushing the welded car control arm 3. The pusher 54 has a contact surface 58 that mates with the main body 53.

[0056] The positioning ring 32 has a movable disc 59, which is mounted on the rotating shaft 40. The movable disc 59 has a first fixing hole 60 and a second fixing hole 61. The first fixing hole 60 is close to the rotating shaft 40, and the second fixing hole 61 is away from the rotating shaft 40. The positioning ring 32 can rotate together with the movable disc 59.

[0057] The mounting chamber 38 is also equipped with a retainer 62, with a retaining chamber 63 formed in the middle of the retainer 62. The inner wall of the retaining chamber 63 is provided with one-way teeth 64. The positioning ring 32 and the winding member 33 are disposed in the retaining chamber 63. The retainer 62 is provided with a second notch 65, and the traction member 34 is disposed in the second notch 65. The retainer 62 is provided with symmetrical planes 66 to facilitate installation in the mounting chamber 38.

[0058] The movable plate 59 is also provided with a fixing member 67, one end of which is fixed to the movable plate 59, and the fixing member 67 and the movable plate 59 will not rotate. The fixing member 67 is provided with a locking tooth 68 that mates with the one-way tooth 64. The fixing member 67 is provided with a first fixing rod 69, and the movable plate 59 is provided with a second fixing rod 70. The second fixing rod 70 mates with the first fixing hole 60 and / or the second fixing hole 61, and a tension spring 71 is provided between the first fixing rod 69 and the second fixing rod 70.

[0059] When the second fixing rod 70 is inside the first fixing hole 60, the tension spring 71 pulls the fixing member 67, causing the locking tooth 68 to separate from the one-way tooth 64. This changes the position of the first notch 41 on the positioning ring 32, allowing the traction member 34 to wrap more or less around the positioning ring 32, thus changing the length by which the traction member 34 is pulled. When the second fixing rod 70 is inside the second fixing hole 61, the tension spring 71 pushes the fixing member 67, maintaining the engagement of the locking tooth 68 and the one-way tooth 64.

[0060] A first blocking block 72 and a second blocking block 73 are provided in the installation chamber 38. A blocking surface 74 that cooperates with the first blocking block 72 and the second blocking block 73 is also provided in the installation chamber 38. A first sliding area 75 is formed between the first blocking block 72 and the blocking surface 74, and a second sliding area 76 is formed between the second blocking block 73 and the blocking surface 74. The first sliding area 75 and the second sliding area 76 are arranged opposite to each other. A second spring 77 and a sliding seat 78 are provided in the first sliding area 75. A traction member 34 passes through a channel 79 between the first blocking block 72 and the second blocking block 73. A pushing block 80 is provided on the sliding seat 78, and the pushing block 80 contacts the second spring 77. The traction member 34 is located at the upper end of the sliding seat 78, and the pushing block 80 remains in contact with the traction member 34.

[0061] The second spring 77 can push the traction member 34, causing a portion of it to enter the second sliding area 76, and keep the pushing block 80 engaged with the second sliding area 76. This generates greater friction between the traction member 34 and the inner wall of the second sliding area 76, thereby increasing the external force required to pull the traction member 34. In conjunction with the winding spring force of the winding member, this results in a greater external force being required when the traction member 34 is pulled.

[0062] An isolation block 81 is provided at the second sliding area 76, and an adjusting member 82 is provided in the middle of the isolation block 81. The adjusting member 82 contacts the pushing block 80. The adjusting member 82 is provided with a threaded rod, and the isolation block 81 is provided with a threaded hole that mates with the threaded rod. When the adjusting member 82 is rotated, it comes into contact with the pushing block 80. When the contact point between the adjusting member 82 and the pushing block 80 is within the channel 79, the traction member 34 is not pushed into the second sliding area 76 by the pushing block 80. When the contact point between the adjusting member 82 and the pushing block 80 is within the second sliding area 76, the traction member 34 can be pushed into the second sliding area 76 by the pushing block 80, increasing the friction between the traction member 34 and the inner wall of the second sliding area 76.

[0063] like Figure 7As shown, the vehicle control arm 3 consists of a main body 53 and a sleeve 43. A connecting arm 84 is provided on the main body 53 and is welded to the sleeve 43. A through hole 83 is provided on the main body 53, and a limiting arc head 49 is placed within the through hole 83 to limit the position of the main body 53. An arc-shaped opening 85 is provided on the connecting arm 84, and elastic arms 86 are provided on both sides of the arc-shaped opening 85. The elastic arms 86 are arc-shaped with an arc angle greater than 180°, while the angle of the arc-shaped opening 85 is 180°. Furthermore, there are symmetrically arranged limiting strips 87 on the outer wall of the sleeve 43, forming a limiting area 88 between the limiting strips 87. The elastic arm 86 is placed in the limiting area 88 and is installed in the arc-shaped opening 85 through the sleeve 43 before welding, so that the elastic arm 86 restricts the sleeve 43, thereby realizing the pre-installation between the sleeve 43 and the main body 53. This makes it easy for the unwelded car control arm 3 to be moved together with the main body 53 and the sleeve 43, thus achieving fixation and facilitating the transfer and positioning before welding.

[0064] like Figure 10 As shown, the pressure seat 31 is on the sleeve 43 at this time. The sleeve 43 and the main body 53 push the pressure seat 31 upward. The highest point of the sleeve 43 is higher than the support surface 36, so the traction member 34 pulls the winding member 33, causing it to be pulled and unfolded, generating elastic potential energy. This elastic potential energy can then be used to apply pressure to the sleeve 43, keeping the gap 4 between the sleeve 43 and the main body 53 tighter and improving the welding accuracy.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated welding device for an automotive control arm, wherein the automotive control arm comprises a main body and a sleeve, the main body having a connecting arm and a through hole, the automated welding device welding the connecting arm to the sleeve, characterized in that, Automated welding equipment includes: A welding robotic arm, wherein a controller is mounted on the welding robotic arm, and a welding assembly is mounted at the lower end of the controller. A welding fixing assembly that cooperates with a welding robotic arm includes a base, a rotating seat, and pressure-applying components symmetrically arranged on the rotating seat. The rotating seat is mounted on the base. The base is equipped with a first fixed arm and a second fixed arm. A motor is mounted on the first fixed arm, and a first cylinder and a second cylinder are symmetrically arranged on the second fixed arm. Each of the first and second cylinders has a push plate. The first and second fixed arms are connected by a base plate, forming a rotating area for the rotating seat to rotate. The base plate has a discharge port with a discharge ramp. The rotating seat consists of a connecting plate and rotating arms at both ends of the connecting plate. Each rotating arm has a rotating shaft, and the rotating seat is mounted on a base via the rotating shaft. The connecting plate has a bearing seat with an open-end movable groove in the middle. The connecting plate also has a sliding groove communicating with the movable groove. The bearing seat has symmetrical positioning blocks positioned on both sides of the movable groove. The support base is provided with symmetrical movable holes, which are connected to the movable groove through through holes. The movable holes are provided with arc-shaped surfaces, and the through holes are located in the middle of the arc-shaped surfaces. The movable hole is provided with a plug, a first spring and a limiting arc head. The first spring is disposed between the plug and the limiting arc head. The limiting arc head contacts the arc surface and keeps the limiting arc head part entering the movable groove through the through hole. The limiting arc head is placed in the through hole to restrict the position of the main body. A pushing component is provided in the movable groove. The pushing component has a mounting groove. A sliding rod is provided in the mounting groove. The sliding rod is set in the sliding groove. Symmetrically arranged cooperating rods are provided on the pushing component. The cooperating rods cooperate with the push plate. The cooperating rods are set on both sides of the mounting groove. The pressure application component includes: Symmetrically arranged support bases, each support base having a support surface and a guide arc surface. The pressure-applying seat has an internal hollowed-out cavity to form an installation chamber. A positioning ring is installed inside the installation chamber, with a positioning chamber formed in the middle of the positioning ring. A rotating shaft is provided in the middle of the positioning chamber, and a first notch is provided on the positioning ring. A winding assembly is installed inside the positioning chamber, with one end of the winding assembly mounted on a rotating shaft. And a traction member, one end of which passes through the pressure seat and is connected to the support seat, and the other end is connected to the other end of the winding member through the first notch.

2. The automated welding device for automotive control arms according to claim 1, characterized in that, The positioning ring is provided with a movable disk, which is mounted on the rotating shaft. The movable disk is provided with a first fixing hole and a second fixing hole, with the first fixing hole close to the rotating shaft and the second fixing hole away from the rotating shaft.

3. The automated welding device for automotive control arms according to claim 2, characterized in that, The installation chamber is also provided with a retaining member, the retaining member having a retaining chamber in the middle, the inner wall of the retaining chamber being provided with one-way teeth, the positioning ring and the winding member being disposed in the retaining chamber, the retaining member being provided with a second notch, and the traction member being disposed in the second notch.

4. The automated welding device for automotive control arms according to claim 3, characterized in that, The movable plate is also provided with a fixing component, which has locking teeth that cooperate with the one-way teeth.

5. The automated welding device for automotive control arms according to claim 4, characterized in that, The fixing member is provided with a first fixing rod, and the movable plate is provided with a second fixing rod. The second fixing rod cooperates with the first fixing hole and / or the second fixing hole, and a tension spring is provided between the first fixing rod and the second fixing rod.

6. The automated welding device for automotive control arms according to claim 5, characterized in that, The installation chamber is provided with a first blocking block and a second blocking block. The installation chamber is also provided with a blocking surface that cooperates with the first blocking block and the second blocking block. A first sliding area is formed between the first blocking block and the blocking surface, and a second sliding area is formed between the second blocking block and the blocking surface. The first sliding area and the second sliding area are arranged opposite to each other. A second spring and a sliding seat are provided in the first sliding area. A traction member passage is formed between the first blocking block and the second blocking block. A pushing block is provided on the sliding seat. The pushing block is in contact with the second spring. The traction member is provided at the upper end of the sliding seat, and the pushing block is kept in contact with the traction member.

7. The automated welding device for automotive control arms according to claim 6, characterized in that, An isolation block is provided at the second sliding area, and an adjustment member is provided in the middle of the isolation block, which is in contact with the pushing block.

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