A body welding positioning device

Abstract

The utility model relates to welding fixture technical field, concretely is a kind of car body welding positioning device, including workbench surface support piece and clamping assembly, workbench surface connects multiple support pieces, support piece is composed of fixed part and movable part, fixed part and movable part are symmetrically arranged, fixed part and movable part are all connected on workbench surface, fixed part includes first bottom plate and first support frame, first bottom plate is detachably connected with workbench surface, first support frame is connected with first bottom plate, movable part includes second bottom plate, second support frame and sliding part, second bottom plate side is connected with second support frame, second bottom plate is detachably connected on workbench surface, clamping assembly is connected on workbench surface.In the utility model, sliding part in movable part can be moved to fixed part in horizontal direction, by adjusting the relative position between movable part and fixed part, the different width of door sill can be adapted, the versatility of device is improved, and production cost and storage space are reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and specifically to a vehicle body welding positioning device. Background Technology

[0002] The door sill, located below the door and connecting the front and rear wheel arches, is an important structural component on the bottom side of the vehicle body. It enhances the side strength of the vehicle body, protecting passengers from injury in side collisions, and also provides mounting support for the door.

[0003] Chinese Patent Publication No. CN221910535U discloses a clamp for holding a car door sill. The car door sill includes a sill body, a first metal weldment, and a second metal weldment. The clamp includes: a support platform; a first positioning mechanism including a first positioning pin for positioning the sill body; a second positioning mechanism including a second positioning pin for positioning the first metal weldment; a third positioning mechanism including a third positioning pin for positioning the second metal weldment; a first pressing mechanism for pressing the sill body onto the support; a second pressing mechanism for pressing the first metal weldment onto the sill body; and a third pressing mechanism for pressing the second metal weldment onto the sill body. The advantages of this invention are that the welding clamp has high positioning accuracy and reliable positioning and fixing of various components in the car door sill, effectively ensuring high welding accuracy and efficiency, and is suitable for automated production.

[0004] However, in the above technical solution, the positioning and fixing of the various components of the car door sill are achieved by using the first pressing mechanism, the second pressing mechanism and the third pressing mechanism to press the door sill body, the first metal weldment and the second metal weldment respectively. However, the support structure of this fixture is usually of a fixed size and can only adapt to door sills of a specific size. For door sills of different models or different configurations of the same model with different sizes, the versatility of this fixture is poor, and multiple fixtures of different specifications are required, which increases production costs and storage space. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a vehicle body welding positioning device.

[0006] The technical solution of this utility model is as follows: A vehicle body welding positioning device includes a worktable connected to multiple support members. Each support member consists of a fixed member and a movable member, which are symmetrically arranged and connected to the worktable. The fixed member includes a first base plate and a first support frame. The first base plate is detachably connected to the worktable, and the first support frame is connected to the first base plate. The movable member includes a second base plate, a second support frame, and a sliding member. One side of the second base plate is connected to the second support frame, and the second base plate is detachably connected to the worktable. The sliding member is connected to the second support frame and can move horizontally towards the fixed member to constrain the horizontal displacement of the workpiece. A clamping assembly is connected to the worktable and includes a telescopic device, a rotating rod, and a pressing block. The telescopic device is detachably connected to the second support frame, and the telescopic end of the telescopic device is connected to one end of the rotating rod. The rotating rod is rotatably connected to the second support frame, and the pressing block is connected to the rotating rod. When the rotating rod rotates around the rotating connection point, it drives the pressing block to move synchronously. The horizontal movement of the pressing block and the sliding member achieves synchronous clamping and positioning in both the vertical and horizontal directions.

[0007] Preferably, the rotating rod consists of a connecting rod, a support rod, and a positioning rod. The support rod and the connecting rod are T-shaped. The connecting rod is rotatably connected to the second support frame. One end of the connecting rod is rotatably connected to the telescopic end of the telescopic device. The positioning rod is connected to one end of the connecting rod. The connecting rod, the support rod, and the positioning rod together form an F-shape.

[0008] Preferably, one end of the positioning rod is connected to a clamping block.

[0009] Preferably, the sliding element consists of a fixed seat, a guide rod, a sliding block, an elastic element, and a sliding seat. The fixed seat is detachably connected to a notch opened on the second support frame. A horizontally arranged sliding groove is opened on the fixed seat. The two ends of the guide rod are connected to the sliding groove. The sliding block is slidably sleeved on the guide rod. The sliding seat is connected to the sliding block. The sliding seat is in sliding contact with the extrusion block. The elastic element is disposed between the sliding block and the inner wall of the sliding groove and is sleeved on the outside of the guide rod.

[0010] Preferably, the sliding seat consists of a fixed block, an adjusting block, and an adjusting bolt. The fixed block and the adjusting block are arranged in parallel, the adjusting bolt is rotatably connected to the adjusting block, and one end of the adjusting bolt passes through the adjusting block and is threadedly connected to the fixed block.

[0011] Preferably, the adjusting block is connected to two limiting rods on the side near the fixed block. The limiting rods are symmetrically arranged on both sides of the adjusting bolt, and the limiting rods slide in contact with the through holes opened on the fixed block.

[0012] Preferably, a wear-resistant sleeve is connected to the sliding block, and the wear-resistant sleeve is fitted on the outside of the guide rod.

[0013] Preferably, both the first support frame and the second support frame are provided with reinforcing ribs.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: In this invention, the sliding component in the movable part can move horizontally towards the fixed part. By adjusting the relative position between the movable and fixed parts, it can adapt to door sills of different widths. This eliminates the need for multiple clamps of different specifications for door sills of different sizes, greatly improving the device's versatility and reducing production costs and storage space. The telescopic end of the telescopic device drives the rotating rod to rotate, which in turn drives the pressing block to move synchronously. The horizontal movement of the pressing block and the sliding component achieves synchronous clamping and positioning in both the vertical and horizontal directions. This synchronous clamping and positioning method can more effectively fix the various components of the door sill, reducing displacement caused by external forces during welding and improving welding accuracy and quality. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the support component and clamping assembly structure; Figure 3 for Figure 2 A cross-sectional view; Figure 4 for Figure 3 Enlarged view of the structure at point A; Reference numerals: 1. Workbench surface; 2. Support component; 3. Fixing component; 4. Moving component; 5. First base plate; 6. First support frame; 7. Second base plate; 8. Second support frame; 9. Sliding component; 10. Telescopic device; 11. Rotating rod; 12. Pressing block; 13. Connecting rod; 14. Support rod; 15. Positioning rod; 16. Pressing block; 17. Fixed seat; 18. Guide rod; 19. Sliding block; 20. Elastic component; 21. Sliding seat; 22. Fixing block; 23. Adjusting block; 24. Adjusting bolt; 25. Limiting rod; 26. Wear-resistant sleeve; 27. Reinforcing rib. Detailed Implementation

[0016] Example 1, as Figures 1-4As shown, the present invention proposes a vehicle body welding positioning device, including a worktable 1, a support member 2, and a clamping assembly. The worktable 1 is connected to multiple support members 2. Each support member 2 consists of a fixed member 3 and a movable member 4. The fixed member 3 and the movable member 4 are symmetrically arranged and are both connected to the worktable 1. The fixed member 3 includes a first base plate 5 and a first support frame 6. The first base plate 5 is detachably connected to the worktable 1, and the first support frame 6 is connected to the first base plate 5. The movable member 4 includes a second base plate 7, a second support frame 8, and a sliding member 9. One side of the second base plate 7 is connected to the second support frame 8. The second base plate 7 is detachably connected to the worktable 1. The sliding member 9 is connected to the second support frame 8 and can move horizontally toward the fixed member 3 to constrain the horizontal displacement of the workpiece. Both the first support frame 6 and the second support frame 8 are provided with reinforcing ribs 27; the reinforcing ribs 27 can enhance the overall strength of the fixed part 3 and the movable part 4. The clamping assembly is connected to the worktable 1. The clamping assembly includes a telescopic device 10, a rotating rod 11, and a pressing block 12. The telescopic device 10 is detachably bolted to the second support frame 8. The telescopic device 10 is selected, but is not limited to, a cylinder or a hydraulic cylinder. The cylinder or hydraulic cylinder is connected to an external pre-set air supply or hydraulic equipment. The telescopic end of the telescopic device 10 is rotatably connected to a hinged seat at one end of the rotating rod 11. The hinged seat / pin of the rotating rod 11 is connected to the second support frame 8. The pressing block 12 is connected to the rotating rod 11. When the rotating rod 11 rotates around the rotating connection point, it drives the pressing block 12 to move synchronously. The pressing block 12 and the sliding member 9 move horizontally to achieve synchronous clamping and positioning in the vertical and horizontal directions.

[0017] Example 2, as Figure 3 As shown, the present invention proposes a vehicle body welding positioning device. Compared with Embodiment 1, this embodiment describes the detailed structure of the clamping assembly. The rotating rod 11 is composed of a connecting rod 13, a support rod 14, and a positioning rod 15. The support rod 14 and the connecting rod 13 are T-shaped. The connecting rod 13 is rotatably connected to the second support frame 8. One end of the connecting rod 13 is rotatably connected to the telescopic end of the telescopic device 10. The positioning rod 15 is connected to one end of the connecting rod 13. The connecting rod 13, the support rod 14, and the positioning rod 15 are F-shaped as a whole. One end of the positioning rod 15 is connected to a clamping block 16; the clamping block 16 is made of, but is not limited to, rubber material, and the clamping block 16 directly contacts the door sill and prevents deformation and damage caused by squeezing.

[0018] Example 3, as Figures 3-4 As shown, this utility model proposes a vehicle body welding positioning device. Compared with Embodiment 2, this embodiment describes the detailed structure of the movable part 4. The sliding member 9 consists of a fixed base 17, a guide rod 18, a sliding block 19, an elastic element 20, and a sliding seat 21. The fixed base 17 is detachably connected to a notch on the second support frame 8. A horizontally arranged sliding groove is provided on the fixed base 17. The two ends of the guide rod 18 are connected to the sliding groove. The sliding block 19 is slidably sleeved on the guide rod 18. The sliding seat 21 is connected to the sliding block 19 and slides in contact with the pressing block 12. The elastic element 20 is disposed between the sliding block 19 and the inner wall of the sliding groove and is sleeved on the outside of the guide rod 18. The elastic element 20 is disposed on the side of the sliding block 19 close to the fixed member 3 to maintain a larger distance between the sliding block 19 and the fixed member 3 in the initial state to facilitate the placement of the workpiece. The elastic element 20 may be, but is not limited to, a spring. The sliding seat 21 consists of a fixed block 22, an adjusting block 23, and an adjusting bolt 24. The fixed block 22 and the adjusting block 23 are arranged in parallel. The adjusting bolt 24 is rotatably connected to the adjusting block 23 by a bearing. One end of the adjusting bolt 24 passes through the adjusting block 23 and is threadedly connected to the fixed block 22. The adjusting bolt 24 can be, but is not limited to, an internal hex bolt, which can facilitate adjustment while reducing the impact on the adjusting block 23. Two limiting rods 25 are connected to the side of the adjusting block 23 near the fixed block 22. The limiting rods 25 are symmetrically arranged on both sides of the adjusting bolt 24. The limiting rods 25 slide in contact with the through holes opened on the fixed block 22. The limiting rods 25 are used to guide the movement direction of the adjusting block 23 so that it moves horizontally. A wear-resistant sleeve 26 is connected to the sliding block 19, and the wear-resistant sleeve 26 is fitted on the outside of the guide rod 18; the wear-resistant sleeve 26 is selected with self-lubricating function, which can reduce wear during sliding.

[0019] In summary, when using this utility model, the car door sill is first placed on the support structure composed of the fixed part 3 and the movable part 4. The planes on the upper surfaces of the first support frame 6 and the second support frame 8 are used to support the placement of the car door sill. The telescopic device 10 extends and retracts, causing the rotating rod 11 to rotate around the rotating connection point. When the rotating rod 11 rotates, it causes the pressing block 12 to move synchronously. When the pressing block 12 rotates, it contacts the sliding seat 21 and pushes it to move the sliding block 19 along the guide rod 18 in the horizontal direction. At the same time, it compresses the length of the elastic element 20. After the rotating rod 11 gradually becomes horizontal, the positioning rod 15 at one end contacts the upper surface of the car door sill. The adjusting block 23 in the sliding seat 21 contacts the side wall of the car door sill. The distance between the fixed block 22 and the adjusting block 23 is finely adjusted by adjusting the bolt 24 to further precisely adjust the position of the sliding seat 21 to adapt to car door sills of different sizes. After welding is completed, the telescopic device 10 retracts, causing the rotating rod 11 to reverse. After the sliding seat 21 loses external force, the elastic element 20 rebounds, allowing the sliding seat 21 to return to its initial position.

[0020] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A vehicle body welding positioning device, characterized in that, include The workbench (1) is connected to multiple support members (2). Each support member (2) consists of a fixed member (3) and a movable member (4). The fixed member (3) and the movable member (4) are symmetrically arranged. Both the fixed member (3) and the movable member (4) are connected to the workbench (1). The fastener (3) includes a first base plate (5) and a first support frame (6). The first base plate (5) is detachably connected to the workbench (1), and the first support frame (6) is connected to the first base plate (5). The movable part (4) includes a second base plate (7), a second support frame (8) and a sliding part (9). One side of the second base plate (7) is connected to the second support frame (8). The second base plate (7) is detachably connected to the worktable (1). The sliding part (9) is connected to the second support frame (8). The sliding part (9) can move horizontally toward the fixed part (3) to constrain the horizontal displacement of the workpiece. The clamping assembly is connected to the worktable (1). The clamping assembly includes a telescopic device (10), a rotating rod (11), and a pressing block (12). The telescopic device (10) is detachably connected to the second support frame (8). The telescopic end of the telescopic device (10) is connected to one end of the rotating rod (11). The rotating rod (11) is rotatably connected to the second support frame (8). The pressing block (12) is connected to the rotating rod (11). When the rotating rod (11) rotates around the rotating connection point, it drives the pressing block (12) to move synchronously. The pressing block (12) and the sliding member (9) move horizontally to achieve synchronous clamping and positioning in the vertical and horizontal directions.

2. The vehicle body welding positioning device according to claim 1, characterized in that, The rotating rod (11) is composed of a connecting rod (13), a support rod (14) and a positioning rod (15). The support rod (14) and the connecting rod (13) are T-shaped. The connecting rod (13) is rotatably connected to the second support frame (8). One end of the connecting rod (13) is rotatably connected to the telescopic end of the telescopic device (10). The positioning rod (15) is connected to one end of the connecting rod (13). The connecting rod (13), the support rod (14) and the positioning rod (15) are F-shaped as a whole.

3. The vehicle body welding positioning device according to claim 2, characterized in that, One end of the positioning rod (15) is connected to a clamping block (16).

4. The vehicle body welding positioning device according to claim 1, characterized in that, The sliding component (9) consists of a fixed seat (17), a guide rod (18), a sliding block (19), an elastic element (20), and a sliding seat (21). The fixed seat (17) is detachably connected to the notch opened on the second support frame (8). A horizontally arranged sliding groove is opened on the fixed seat (17). The two ends of the guide rod (18) are connected to the sliding groove. The sliding block (19) is slidably sleeved on the guide rod (18). The sliding seat (21) is connected to the sliding block (19). The sliding seat (21) is in sliding contact with the pressing block (12). The elastic element (20) is arranged between the sliding block (19) and the inner wall of the sliding groove and sleeved on the outside of the guide rod (18).

5. A vehicle body welding positioning device according to claim 4, characterized in that, The sliding seat (21) consists of a fixed block (22), an adjusting block (23) and an adjusting bolt (24). The fixed block (22) and the adjusting block (23) are set in parallel. The adjusting bolt (24) is rotatably connected to the adjusting block (23). One end of the adjusting bolt (24) passes through the adjusting block (23) and is threadedly connected to the fixed block (22).

6. A vehicle body welding positioning device according to claim 5, characterized in that, Two limiting rods (25) are connected to the side of the adjusting block (23) near the fixed block (22). The limiting rods (25) are symmetrically arranged on both sides of the adjusting bolt (24). The limiting rods (25) slide with the through holes opened on the fixed block (22).

7. A vehicle body welding positioning device according to claim 4, characterized in that, A wear-resistant sleeve (26) is connected to the sliding block (19), and the wear-resistant sleeve (26) is fitted on the outside of the guide rod (18).

8. The vehicle body welding positioning device according to claim 1, characterized in that, Both the first support frame (6) and the second support frame (8) are provided with reinforcing ribs (27).

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