A device for correcting the deformation of a chassis weld

Abstract

The utility model discloses a kind of chassis welding deformation correction devices, it is related to the technical field of automobile parts processing, including bottom plate, the left and right sides of bottom plate top are slidably installed with bracket support assembly, and the middle part fixed mounting of bottom plate top has middle part connecting frame support assembly;The bracket support assembly includes mounting bracket, bidirectional screw rod one, limit rod, screw rod, two end parts fastening, middle part fastening, motor one, motor two;Bidirectional screw rod one, limit rod, screw rod are sequentially installed between the left and right sides on the upper side of mounting bracket inside from top to bottom, and bidirectional screw rod one, screw rod are rotatably connected with the mounting bracket.The end part fastening of the utility model can be compressed bracket end surface by top pressure cylinder, prevent bracket end part buckling when welding;Middle part fastening is clamped to bracket middle part by the clamp driven by screw rod, and vertical correction force can be exerted to deformation position by cooperation lifting cylinder, realize welding and correction synchronous.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a chassis welding deformation correction device. Background Technology

[0002] As a core load-bearing component of the chassis, the rear subframe of an automobile is traditionally composed of front and rear supports and two central connecting frames welded together. During the welding process, uneven heating or external forces can easily cause deformation, affecting dimensional accuracy and structural strength. While existing technologies incorporate some welding fixtures and straightening devices, they still suffer from the following shortcomings:

[0003] 1. Limited adjustment capability: Traditional devices are difficult to dynamically adjust the spacing and height of the brackets and connecting frames in multiple directions, making it difficult to adapt to the size changes of different models of rear subframes, resulting in poor versatility.

[0004] 2. Insufficient fixation effect: Welding relies solely on clamping or holding in one direction, which cannot provide multi-point coordinated fixation for the ends, middle, and connecting frames of the bracket. During the welding process, stress release can easily cause local deformation.

[0005] 3. Lack of correction function: Most fixtures only serve a fixing function and cannot correct slight deformations that have occurred during the welding process in real time. They need to rely on subsequent secondary processing, which increases costs and time.

[0006] Therefore, in order to solve the aforementioned problems, we propose a chassis welding deformation correction device. Utility Model Content

[0007] The purpose of this utility model is to address the deficiencies in the existing technology by proposing a chassis welding deformation correction device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A chassis welding deformation correction device includes a base plate, on the left and right sides of the top of the base plate respectively, a bracket support assembly is slidably installed, and a central connecting frame support assembly is fixedly installed in the middle of the top of the base plate.

[0010] The bracket support assembly includes a mounting frame, a bidirectional lead screw, a limiting rod, a lead screw, two end fasteners, a middle fastener, a motor, and a motor.

[0011] The bidirectional lead screw, the limiting rod, and the lead screw are installed sequentially from top to bottom between the left and right sides of the upper inner side of the mounting frame. The bidirectional lead screw and the lead screw are rotatably connected to the mounting frame. The motors are fixedly installed on the left and right sides of the mounting frame, respectively. The motor is driven by the bidirectional lead screw and the motor is driven by the lead screw. The two end fixing parts are driven by the left and right sides of the outer surface of the bidirectional lead screw and the middle fixing part is driven by the outer surface of the lead screw.

[0012] The central connecting frame support assembly includes a housing, a two-way lead screw, two sliders, two clamps, and a motor.

[0013] The top of the housing has a sliding groove, and two sliders are slidably installed inside the sliding groove. Two clamps are fixedly installed on the top of the two sliders. The second bidirectional lead screw is rotatably installed between the left and right sides inside the housing. The two sliders are threadedly installed on the left and right sides of the outer surface of the second bidirectional lead screw. The third motor is fixedly installed on one side of the housing and is connected to the second bidirectional lead screw for transmission.

[0014] Furthermore, two support bars are fixedly installed on both the left and right sides of the bottom inner side of the mounting bracket.

[0015] Furthermore, push cylinders are fixedly installed on both the left and right sides of the top of the base plate, and the output ends of the two push cylinders are respectively fixedly connected to one side of the two mounting brackets.

[0016] Furthermore, the end fixing component includes a movable block, a top-pressing cylinder, a top-pressing block, and a pin. The movable block is threadedly connected to the bidirectional lead screw. The movable block is slidably sleeved on the outside of the limiting rod and the lead screw. The movable block does not contact the lead screw. The top-pressing cylinder is fixedly installed at the bottom end of the movable block. The top-pressing block is fixedly installed at the output end of the top-pressing cylinder. The pin is fixedly installed at the bottom end of the top-pressing block.

[0017] Furthermore, the central fixing component includes a second movable block and the clamp, the clamp is fixedly installed at the bottom end of the second movable block, the second movable block is threadedly connected to the lead screw, and the second movable block is slidably connected to the limiting rod.

[0018] Furthermore, the fixture includes a lifting cylinder, a right-angle plate, two clamping plates, and a gripper cylinder. The output end of the lifting cylinder is fixedly installed with the right-angle plate, the gripper cylinder is longitudinally fixedly installed on one side of the right-angle plate, and the two output ends of the gripper cylinder are fixedly installed with the clamping plates.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model utilizes a two-way lead screw (first and second) and a motor drive, allowing the end fixing component, middle fixing component, and slider to move synchronously in opposite directions or in opposite directions. This enables flexible adjustment of the support spacing and connecting frame position, adapting to different specifications of rear subframes. Furthermore, it pushes a cylinder to drive the mounting frame to move as a whole. Combined with the two-way lead screw adjustment of the middle connecting frame support assembly, this achieves adaptive width of the overall frame, meeting diverse workpiece requirements.

[0021] 2. The end fixing component of this utility model can press the end surface of the bracket with a top-pressing cylinder to prevent the end of the bracket from warping during welding. The middle fixing component clamps the middle of the bracket with a screw-driven clamp, and can be used in conjunction with a lifting cylinder to apply a vertical corrective force to the deformed parts, so that welding and correction can be carried out simultaneously.

[0022] 3. The lifting cylinder of the clamp is linked with the gripper cylinder, which can clamp the bracket that has been slightly bent and then lift or press it vertically to correct the deformation in real time and reduce subsequent rework processes. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a perspective view of the middle connecting frame support assembly of this utility model;

[0026] Figure 3 This is a perspective view of the clamp of this utility model;

[0027] Figure 4 This is a perspective view of the end fixing component of this utility model;

[0028] Figure 5 This is a perspective view of the movable block two of this utility model.

[0029] In the diagram: 1. Base plate; 2. Mounting bracket; 3. Middle connecting bracket support assembly; 4. Push cylinder; 5. Support bar; 6. Double-acting lead screw one; 7. Limiting rod; 8. Lead screw; 9. End fixing component; 10. Middle fixing component; 11. Motor one; 12. Motor two; 13. Double-acting lead screw two; 14. Housing; 15. Slider; 16. Clamp; 17. Lifting cylinder; 18. Right-angle plate; 19. Clamping plate; 20. Gripper cylinder; 21. Moving block one; 22. Top-pressing cylinder; 23. Top-pressing block; 24. Pin rod; 25. Moving block two; 26. Motor three. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0031] Reference Figure 1-5 A chassis welding deformation correction device includes a base plate 1, with bracket support components slidably installed on the left and right sides of the top of the base plate 1, and a central connecting frame support component 3 fixedly installed in the middle of the top of the base plate 1.

[0032] The two bracket support components can be used to support and fix the front and rear brackets of the rear subframe, and the middle connecting bracket support component 3 is used to support and fix the two middle connecting brackets of the rear subframe. It can maintain the stability of the front and rear brackets and the two middle connecting brackets during the welding process, avoid deformation of the rear subframe, and play a good corrective role.

[0033] The bracket support assembly includes a mounting frame 2, a bidirectional lead screw 6, a limiting rod 7, a lead screw 8, two end fixing parts 9, a middle fixing part 10, a motor 11, and a motor 2 12. The bidirectional lead screw 6, the limiting rod 7, and the lead screw 8 are installed sequentially from top to bottom between the left and right sides of the upper inner side of the mounting frame 2. The bidirectional lead screw 6 and the lead screw 8 are rotatably connected to the mounting frame 2. The motor 11 and the motor 2 12 are respectively fixedly installed on the left and right sides of the mounting frame 2. The motor 11 is driven by the bidirectional lead screw 6, and the motor 2 12 is driven by the lead screw 8. The two end fixing parts 9 are driven by the left and right sides of the outer surface of the bidirectional lead screw 6, and the middle fixing part 10 is driven by the outer surface of the lead screw 8.

[0034] The end fastener 9 is used to press and fix the two ends of the front and rear brackets, and the middle fastener 10 is used to fix the middle of the front and rear brackets, effectively preventing the front and rear brackets from deforming during the welding process.

[0035] Motor 11 can drive the bidirectional lead screw 6 to rotate, and the bidirectional lead screw 6 can drive the end fixing part 0 to move. Under the action of the bidirectional lead screw 6, the two end fixing parts 9 can move towards each other or away from each other at the same time, so as to adapt to front and rear supports of different lengths.

[0036] Motor 2 12 can drive lead screw 8 to rotate, and lead screw 8 can drive the middle fixing part 10 to move, thereby fixing it at any position between the two ends of the front and rear brackets as needed.

[0037] The end fixing component 9 includes a movable block 21, a pressing cylinder 22, a pressing block 23, and a pin 24. The movable block 21 is threadedly connected to the bidirectional lead screw 6. The movable block 21 is slidably sleeved on the outside of the limiting rod 7 and the lead screw 8, and the movable block 21 does not contact the lead screw 8. The pressing cylinder 22 is fixedly installed at the bottom end of the movable block 21. The pressing block 23 is fixedly installed at the output end of the pressing cylinder 22, and the pin 24 is fixedly installed at the bottom end of the pressing block 23. Two support bars 5 are fixedly installed on the left and right sides of the bottom inner side of the mounting bracket 2.

[0038] The front and rear supports of the rear subframe can be placed on top of the four support bars 5 at the bottom inside the mounting bracket 2. The top-pressing cylinder 22 can push the top-pressing block 23 to cooperate with the support bars 5 to press the two ends of the front and rear supports. The end fixing parts 9 can also be inserted into the mounting holes inside the front and rear supports through the pins 24 to achieve pressing and fixing of the front and rear supports. There is a certain gap between the two pairs of support bars 5 so that the pins 24 can be inserted.

[0039] The double-acting lead screw 6 can drive the moving block 21 to move, and the moving block 21 can drive the top pressure cylinder 22 to move.

[0040] The middle fixing component 10 includes a second movable block 25 and a clamp 16. The clamp 16 is fixedly installed at the bottom end of the second movable block 25. The second movable block 25 is threadedly connected to the lead screw 8 and slidably connected to the limit rod 7.

[0041] The lead screw 8 of the middle fixing part 10 can drive the second moving block 25 to move, the second moving block 25 can drive the clamp 16 to move, and the clamp 16 can clamp and fix the front and rear supports.

[0042] The fixture 16 includes a lifting cylinder 17, a right-angle plate 18, two clamping plates 19, and a gripper cylinder 20. The output end of the lifting cylinder 17 is fixedly installed with the right-angle plate 18, and the gripper cylinder 20 is longitudinally fixedly installed on one side of the right-angle plate 18. The two output ends of the gripper cylinder 20 are fixedly installed with the clamping plates 19.

[0043] The lifting cylinder 17 can drive the right-angle plate 18 to rise and fall, and the gripper cylinder 20 can follow the right-angle plate 18 to rise and fall. The gripper cylinder 20 can clamp and fix the front and rear supports and the middle connecting frame of the rear subframe through the clamping plate 19.

[0044] Since the lifting cylinder 17 can drive the gripper cylinder 20 to move up and down, when the front and rear supports undergo a certain degree of bending deformation, the clamp of the middle fixing part 10 can clamp the deformed part of the front and rear supports, and the lifting action of the lifting cylinder 17 can correct the deformed part to a certain extent.

[0045] The central connecting frame support assembly 3 includes a housing 14, a bidirectional lead screw 13, two sliders 15, two clamps 16, and a motor 26. The top of the housing 14 has a sliding groove, the two sliders 15 are slidably installed inside the sliding groove, the two clamps 16 are fixedly installed on the top of the two sliders 15, the bidirectional lead screw 13 is rotatably installed between the left and right sides inside the housing 14, the two sliders 15 are threadedly installed on the left and right sides of the outer surface of the bidirectional lead screw 13, and the motor 26 is fixedly installed on one side of the housing 14 and is connected to the bidirectional lead screw 13 for transmission.

[0046] Motor 26 can drive the bidirectional lead screw 13 to rotate. The bidirectional lead screw 13 can drive the clamp 16 to move through the slider 15. The two clamps 16 can fix a middle connecting frame respectively. The setting of the bidirectional lead screw 13 can realize the opposite or opposite movement of the two sliders 15, and the distance between the two middle connecting frames can be adjusted according to the needs.

[0047] Push cylinders 4 are fixedly installed on both the left and right sides of the top of the base plate 1. The output ends of the two push cylinders 4 are fixedly connected to one side of the two mounting brackets 2 respectively. The push cylinders 4 can push the mounting brackets 2 to move and adjust the distance between the two bracket support components and the middle connecting bracket support component 3, so as to adapt to the rear subframe of different cabinets.

Claims

1. A chassis welding deformation correction device, comprising a base plate (1), characterized in that, The bottom plate (1) has a bracket support assembly slidably installed on the left and right sides of the top, and a middle connecting frame support assembly (3) is fixedly installed in the middle of the top of the bottom plate (1). The bracket support assembly includes a mounting frame (2), a two-way lead screw (6), a limiting rod (7), a lead screw (8), two end fixing parts (9), a middle fixing part (10), a motor (11), and a motor (12). The bidirectional lead screw 1 (6), the limiting rod (7), and the lead screw (8) are installed from top to bottom between the left and right sides of the upper inner side of the mounting frame (2). The bidirectional lead screw 1 (6) and the lead screw (8) are rotatably connected to the mounting frame (2). The motor 1 (11) and the motor 2 (12) are respectively fixedly installed on the left and right sides of the mounting frame (2). The motor 1 (11) is drivenly connected to the bidirectional lead screw 1 (6), and the motor 2 (12) is drivenly connected to the lead screw (8). The two end fixing parts (9) are drivenly installed on the left and right sides of the outer surface of the bidirectional lead screw 1 (6), and the middle fixing part (10) is drivenly installed on the outer surface of the lead screw (8). The middle connecting frame support assembly (3) includes a housing (14), a two-way lead screw (13), two sliders (15), two clamps (16), and a motor (26). The top of the housing (14) is provided with a sliding groove, and two sliders (15) are slidably installed inside the sliding groove. Two clamps (16) are fixedly installed on the top of the two sliders (15). The second bidirectional lead screw (13) is rotatably installed between the left and right sides inside the housing (14). The two sliders (15) are threadedly installed on the left and right sides of the outer surface of the second bidirectional lead screw (13). The third motor (26) is fixedly installed on one side of the housing (14) and is connected to the second bidirectional lead screw (13) for transmission.

2. The chassis welding deformation correction device according to claim 1, characterized in that, Two support bars (5) are fixedly installed on the left and right sides of the bottom inner side of the mounting bracket (2).

3. The chassis welding deformation correction device according to claim 1, characterized in that, Push cylinders (4) are fixedly installed on the left and right sides of the top of the base plate (1), and the output ends of the two push cylinders (4) are fixedly connected to one side of the two mounting brackets (2).

4. The chassis welding deformation correction device according to claim 1, characterized in that, The end fixing component (9) includes a moving block (21), a top-pressing cylinder (22), a top-pressing block (23), and a pin (24). The moving block (21) is threadedly connected to the bidirectional lead screw (6). The moving block (21) is slidably sleeved on the outside of the limiting rod (7) and the lead screw (8). The moving block (21) does not contact the lead screw (8). The top-pressing cylinder (22) is fixedly installed at the bottom end of the moving block (21). The top-pressing block (23) is fixedly installed at the output end of the top-pressing cylinder (22). The pin (24) is fixedly installed at the bottom end of the top-pressing block (23).

5. The chassis welding deformation correction device according to claim 1, characterized in that, The middle fixing member (10) includes a second movable block (25) and the clamp (16). The clamp (16) is fixedly installed at the bottom end of the second movable block (25). The second movable block (25) is threadedly connected to the lead screw (8). The second movable block (25) is slidably connected to the limiting rod (7).

6. The chassis welding deformation correction device according to claim 5, characterized in that, The clamp (16) includes a lifting cylinder (17), a right-angle plate (18), two clamping plates (19), and a gripper cylinder (20). The output end of the lifting cylinder (17) is fixedly installed with the right-angle plate (18). The gripper cylinder (20) is longitudinally fixedly installed on one side of the right-angle plate (18). The two output ends of the gripper cylinder (20) are fixedly installed with the clamping plates (19).

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