Spot welding fixing device for automobile catalytic converter
By designing a spot welding fixing device for automotive catalysts, a rotating and clamping device is used to achieve precise positioning of the weld points, solving the problem of the inability to position weld points in existing technologies and improving welding efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AI RUIHONGTAI (ZHEJIANG) AUTOMOTIVE TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-28
AI Technical Summary
The existing automotive catalytic converters cannot be positioned during welding, which easily leads to missed welds and incorrect welds, and the catalytic converter needs to be flipped over to weld the other side.
A fixing device including a movable trolley, a rotating device, a clamping device, and a lifting device was designed. Through the cooperation of the positioning block and the pressure block, the welding point can be accurately positioned, and the catalyst can be flipped without loosening the fixing.
It achieves precise positioning of weld points, facilitating quick and easy inspection of missing or incorrect welds, and eliminates the need to interrupt the welding process by flipping the catalyst, thus improving welding efficiency.
Smart Images
Figure CN224168967U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of automotive catalytic converter spot welding equipment, specifically relating to an automotive catalytic converter spot welding fixing device. Background Technology
[0002] Existing automotive catalytic converter welders cannot locate the welding points after fixing the catalytic converter. Furthermore, the inability to locate the welding points during welding makes it easy for workers to miss or make incorrect welds. When welding both sides, workers need to loosen the fixing device and flip the catalytic converter before welding the other side. Summary of the Invention
[0003] The purpose of this invention is to allow workers to position the welding points after fixing the catalyst, quickly check for mis-welding and missing welds after welding, and rotate the catalyst without loosening it before operation, facilitating welding on both sides of the catalyst. The technical solution is as follows:
[0004] A spot welding and fixing device for an automotive catalytic converter, characterized in that: it includes a movable trolley 1 and a connecting shaft; a support frame 2 is located at the middle of the upper surface of the movable trolley 1; a rotating device 3 is rotatably inserted at the middle of the upper surface of the movable trolley 1; a pressing device 4 is provided at the middle of the upper surface of the rotating device 3; a lifting device 5 is connected to the middle of the upper surface of the pressing device 4; a fixing hook 6 is connected to the middle of the left side of the upper surface of the lifting device 5; a locking cylinder 7 is connected to the middle of the left side of the lower surface of the support frame 2; and the rotating device 3 includes a turntable 3. -1. Handle 3-2, pad 3-3, and positioning block 3-4. A handle 3-2 is connected to the middle of the front and rear surfaces of the turntable 3-1. A pad 3-3 is connected to the center of the upper surface of the turntable 3-1. Several positioning blocks 3-4 are evenly distributed and connected to the middle of the upper surface of the pad 3-3. The turntable 3-1 is inserted into the middle of the upper surface of the movable trolley 1. Several clamping plates are connected to the upper surface of each positioning block 3-4. The upper part of the inner surface of each clamping plate is arc-shaped. The pressing device 4 includes a rotating column 4-1. The device comprises a pressure plate 4-2, positioning posts 4-3, and pressure blocks 4-4. The pressure plate 4-2 is connected to the center of the lower surface of the rotating post 4-1. The positioning post 4-3 is connected to the middle of the left side of the upper surface of the pressure plate 4-2. Several pressure blocks 4-4 are evenly distributed on the lower surface of the pressure plate 4-2. The lower edge of the inner surface of each pressure block 4-4 is arc-shaped. The positions of the pressure blocks 4-4 correspond to the positions of the positioning blocks 3-4. Several positioning posts 4-3 are provided on the upper surface of the movable trolley 1. The lifting device 5 includes a hydraulic cylinder 5-1 and a guide... The cylinder 5-1 has guide columns 5-2, connecting discs 5-3 and locking blocks 5-4. Guide columns 5-2 are symmetrically connected to the lower surface of the left and right sides of the cylinder 5-1. Connecting discs 5-3 are connected between the lower surfaces of the two guide columns 5-2. Locking blocks 5-4 are symmetrically connected to the lower surface of the connecting discs 5-3 at the middle left and right sides. Locking blocks 5-4 are symmetrically connected to the lower surface of the turntable 3-1 at the middle left and right sides. The center of the lower surface of the connecting discs 5-3 is connected to the upper surface of the turntable 4-1. The guide columns 5-2 are inserted through and inserted into the upper surface of the support frame 2.
[0005] The beneficial effects of this utility model are as follows: after the worker fixes the catalyst, the welding point can be positioned. After welding, the worker can quickly check whether there are any mis-welding or missing welds. The worker can rotate the catalyst without loosening it before working, which makes it convenient for the worker to weld both sides of the catalyst. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0007] Figure 2 This is a schematic diagram of the rotating device 3 of this utility model;
[0008] Figure 3 This is a schematic diagram of the pressing device 4 of this utility model;
[0009] Figure 4 This is a schematic diagram of the locking device 5 of this utility model;
[0010] In the diagram: 1. Movable trolley; 2. Support frame; 3. Rotating device; 4. Pressing device; 5. Locking device; 6. Fixed hook; 7. Locking cylinder; 8. Turntable; 9. Handle; 10. Pad; 11. Positioning block; 12. Rotating column; 13. Pressure plate; 14. Positioning column; 15. Pressure block; 16. Hydraulic cylinder; 17. Guide column; 18. Connecting plate; 19. Locking block; 10. Clamping block. Detailed Implementation
[0011] Reference Figure 1 Figure 2 Figure 3 Figure 4The aforementioned automotive catalytic converter spot welding fixing device is characterized by comprising: a movable trolley 1 and a connecting shaft; a support frame 2 located at the middle of the upper surface of the movable trolley 1; a rotating device 3 rotatably inserted at the middle of the upper surface of the movable trolley 1; a pressing device 4 located at the middle of the upper surface of the rotating device 3; a lifting device 5 connected to the middle of the upper surface of the pressing device 4; a fixing hook 6 connected to the middle of the left side of the upper surface of the lifting device 5; and a locking cylinder 7 connected to the middle of the left side of the lower surface of the support frame 2. The rotating device 3 includes a turntable. 3-1, handle 3-2, pad 3-3, and positioning blocks 3-4. A handle 3-2 is connected to the middle of the front and rear surfaces of the turntable 3-1. A pad 3-3 is connected to the center of the upper surface of the turntable 3-1. Several positioning blocks 3-4 are evenly distributed along the middle of the upper surface of the pad 3-3. The turntable 3-1 is inserted into the middle of the upper surface of the movable trolley 1. Several clamping plates are connected to the upper surface of each positioning block 3-4. The upper part of the inner surface of each clamping plate is arc-shaped. The pressing device 4 includes a rotating column 4-1. The device comprises a pressure plate 4-2, positioning posts 4-3, and pressure blocks 4-4. The pressure plate 4-2 is connected to the center of the lower surface of the rotating post 4-1. The positioning post 4-3 is connected to the middle of the left side of the upper surface of the pressure plate 4-2. Several pressure blocks 4-4 are evenly distributed on the lower surface of the pressure plate 4-2. The lower edge of the inner surface of each pressure block 4-4 is arc-shaped. The positions of the pressure blocks 4-4 correspond to the positions of the positioning blocks 3-4. Several positioning posts 4-3 are provided on the upper surface of the movable trolley 1. The lifting device 5 includes a hydraulic cylinder 5-1 and a guide... The cylinder 5-1 has guide columns 5-2, connecting discs 5-3 and locking blocks 5-4. Guide columns 5-2 are symmetrically connected to the lower surface of the left and right sides of the cylinder 5-1. Connecting discs 5-3 are connected between the lower surfaces of the two guide columns 5-2. Locking blocks 5-4 are symmetrically connected to the lower surface of the connecting discs 5-3 at the middle left and right sides. Locking blocks 5-4 are symmetrically connected to the lower surface of the turntable 3-1 at the middle left and right sides. The center of the lower surface of the connecting discs 5-3 is connected to the upper surface of the turntable 4-1. The guide columns 5-2 are inserted through and inserted into the upper surface of the support frame 2.
[0012] In use, the operator first places the car catalyst on the positioning block 3-4 on the rotating device 3. Then, the operator starts the oil cylinder 5-1 on the lifting device 5, which drives the pressure plate 4-2 on the pressing device 4 to move downward through the connecting plate 5-3. At the same time, the guide column 5-2 slides on the support frame 2 to place the connecting plate 5-3 to rotate, so that the pressure block 4-4 and the positioning block 3-4 press the catalyst together. The gap between the corresponding positioning block 3-4 and the pressure block 4-4 is the welding point. After welding, the operator can check whether the gap between the positioning block 3-4 and the pressure block 4-4 has been welded.
[0013] When rotating the catalyst, the operator holds handle 3-2 and rotates turntable 3-1 so that turntable 3-1 rotates on the upper surface of movable trolley 1. At the same time, the ball bearings on the positioning pins 4-3 on movable trolley 1 and on the positioning pins 4-3 on pressure plate 4-2 are pressed into the support column by the locking blocks 5-4 below turntable 3-1 and on the locking blocks 5-4 on connecting plate 5-3. After turntable 3-1 and rotating pin 4-1 rotate 180°, the ball bearings on the positioning pins 4-3 on movable trolley 1 and on the positioning pins 4-3 on pressure plate 4-2 are pushed by springs to insert the ball bearings into the locking blocks 5-4 below turntable 3-1 and on the locking blocks 5-4 on connecting plate 5-3 to achieve positioning. Finally, after welding is completed, the oil cylinder 5-1 is started again to retract the telescopic column, and the catalyst can be removed.
[0014] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A spot welding fixing device for an automotive catalytic converter, characterized in that: The movable trolley (1) includes a supporting frame (2) at the middle of the upper surface of the movable trolley (1) and a connecting shaft. A rotating device (3) is rotatably inserted at the middle of the upper surface of the movable trolley (1). A pressing device (4) is provided at the middle of the upper surface of the rotating device (3). A lifting device (5) is connected at the middle of the upper surface of the pressing device (4). A fixed hook (6) is connected at the middle of the left side of the upper surface of the lifting device (5). A locking cylinder (7) is connected at the middle of the left side of the lower surface of the supporting frame (2).
2. The spot welding fixing device for an automotive catalytic converter according to claim 1, characterized in that: The rotating device (3) includes a turntable (3-1), a handle (3-2), a pad (3-3), and a positioning block (3-4). The turntable (3-1) has a handle (3-2) connected to the middle of its front and rear surfaces. The turntable (3-1) has a pad (3-3) connected to the center of its upper surface. The pad (3-3) has several positioning blocks (3-4) evenly distributed in the middle of its upper surface. The turntable (3-1) is inserted into the middle of the upper surface of the movable trolley (1). Each positioning block (3-4) has several clamping plates connected to its upper surface. The inner surface of each clamping plate is arc-shaped.
3. The spot welding fixing device for an automotive catalytic converter according to claim 2, characterized in that: The pressing device (4) includes a rotating column (4-1), a pressure plate (4-2), a positioning column (4-3), and a pressing block (4-4). The pressure plate (4-2) is connected to the center of the lower surface of the rotating column (4-1). The positioning column (4-3) is connected to the middle of the left side of the upper surface of the pressure plate (4-2). Several pressing blocks (4-4) are evenly distributed on the lower surface of the pressure plate (4-2). The lower edge of the inner surface of each pressing block (4-4) is arc-shaped. The position of the pressing block (4-4) corresponds to the position of the positioning block (3-4). Several positioning columns (4-3) are provided on the upper surface of the movable trolley (1).
4. The spot welding fixing device for an automotive catalytic converter according to claim 3, characterized in that: The lifting device (5) includes a hydraulic cylinder (5-1), a guide column (5-2), a connecting plate (5-3), and a locking block (5-4). The guide column (5-2) is symmetrically connected to the lower surface of the left and right sides of the hydraulic cylinder (5-1). The connecting plate (5-3) is connected between the lower surfaces of the two guide columns (5-2). The locking block (5-4) is symmetrically connected to the lower surface of the connecting plate (5-3) at the middle left and right sides. The locking block (5-4) is symmetrically connected to the lower surface of the turntable (3-1) at the middle left and right sides. The center of the lower surface of the connecting plate (5-3) is connected to the upper surface of the turntable (4-1). The guide column (5-2) is inserted through and inserted into the upper surface of the support frame (2).