Automobile rear floor and rear cross beam spot welding and welding positioning tool

Abstract

The utility model discloses a kind of automobile rear floor and rear crossbeam spot welding positioning tool, including bottom plate, several first metal plates are fixed on bottom plate, first connecting base is connected on first metal plate;First connecting base on the periphery of bottom plate is fixed with holding structure, and support structure is fixed on the top of first connecting base in the middle of bottom plate.The utility model is convenient and fast to install, can be adapted to different size automobile rear floor by the position of quick replacement base on bottom plate, without redesigning to whole set of fixture;Convenient to adjust, simple to assemble, effectively guarantee the effective fixation of automobile rear floor and rear crossbeam and the accuracy of welding angle in welding process, not only improve production efficiency, but also avoid raw material waste, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically a positioning tooling for spot welding of the rear floor and rear crossbeam of an automobile. Background Technology

[0002] The rear floor and rear floor crossbeams are important components of the vehicle body structure. Located behind the passenger compartment, the rear floor plays a supporting role in load-bearing and collision safety. The rear floor crossbeams, as an important lateral reinforcement structure at the bottom of the vehicle body, are welded to the rear floor to form a closed frame, which enhances the rigidity of the vehicle body, improves the torsional rigidity of the body, and enhances collision safety.

[0003] Currently, the rear floor and rear floor beams of automobiles are mainly welded using spot welding. However, spot welding makes it inconvenient to fix the rear floor, and many weld points require manual support from the welder, which can cause the weld angles to shift, resulting in waste of raw materials for the rear floor and rear floor beams. Utility Model Content

[0004] To overcome the aforementioned drawbacks of existing technologies, we propose a spot welding positioning fixture for automotive rear floor and rear crossbeam.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spot welding positioning fixture for a car rear floor and rear crossbeam includes a base plate, a plurality of first metal plates are fixed on the base plate, and first connecting bases are connected to the first metal plates; a supporting structure is fixed on the first connecting bases located around the base plate, and a supporting structure is fixed on the top of the first connecting bases located in the middle of the base plate.

[0007] The clamping structure includes a second connecting base fixed to the top of a first connecting base, and a clamping operating mechanism hinged to the outer top end of the second connecting base; the clamping operating mechanism includes a second connecting block hinged to the outer top end of the second connecting base, multiple operating levers with different tilt angles fixed to the outer side of the second connecting block, a circular hole block fixedly connected to the inner side, one end of a third connecting arm connected to the circular hole block, and an upper clamping block fixedly connected to the bottom of the other end of the third connecting arm; a support arm is connected to one side of the first connecting base, and a clamping block that cooperates with the upper clamping block is fixed on the support arm; the support structure includes a connecting plate, and a U-shaped support plate is fixedly connected to the connecting plate.

[0008] In a further improvement, a third connecting seat is fixed on the second connecting base, and the third connecting seat is H-shaped in general; the top of the third connecting seat cooperates with the third connecting arm.

[0009] In a further improvement, the third connecting seat includes several stacked adjusting blocks, with a top limiting block stacked on top of the adjusting blocks; both the adjusting blocks and the top limiting blocks have vertical countersunk holes in their middle parts, and bolts pass through the countersunk holes to connect the top limiting blocks together; the bottom of the adjusting block has a first groove, and the top has a first limiting block that mates with the first groove; the bottom of the top limiting block has a second groove that mates with the first limiting block, and the top has a third groove that mates with the third connecting arm.

[0010] In a further improvement, both the base plate and the first metal plate are provided with multiple reference holes on their surfaces, and the first metal plate is fixedly connected to the reference holes in the base plate by bolts.

[0011] As a further improvement, triangular reinforcing ribs are installed on the first connecting base.

[0012] In a further improvement, a curved support device is installed on the third connecting arm. The curved support device includes a T-shaped connecting block fixedly connected to the third connecting arm, an L-shaped connecting block connected to the T-shaped connecting block, and a curved support column connected to the top of the L-shaped connecting block.

[0013] In a further improvement, the curved support column includes a pin that is fixedly connected to the L-shaped connecting block, with a washer fixed in the middle of the pin and a column head fixed in the top.

[0014] In a further improvement, the top of the clamping block and the bottom of the upper clamping block are mutually cooperating inclined surfaces.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model is easy and quick to install. It can adapt to different sizes of car rear floor by quickly changing the position of the base on the base plate, without the need to redesign the entire fixture.

[0017] 2. This utility model has a convenient structure and simple assembly, which effectively ensures the effective fixing of the rear floor and rear crossbeam of the car and the accuracy of the welding angle during the welding process. It not only improves production efficiency, but also avoids waste of raw materials and reduces costs. Attached Figure Description

[0018] Figure 1 This is an assembly diagram of a spot welding positioning fixture for the rear floor and rear crossbeam of an automobile.

[0019] Figure 2 This is a schematic diagram of the support device.

[0020] Figure 3 This is a schematic diagram of the third connector.

[0021] Figure 4 This is a three-dimensional structural diagram of the third connector.

[0022] Figure 5 This is a schematic diagram of the structure of Example 2.

[0023] Figure 6 This is a schematic diagram of a curved support column.

[0024] In the diagram: 1. Base plate; 2. First metal plate; 3. First connecting base; 31. Connecting plate; 32. U-shaped support plate; 4. Triangular reinforcing rib; 5. Second connecting base; 6. Third connecting seat; 61. Adjusting block; 62. Top limiting block; 63. Countersunk hole; 64. First groove; 65. First limiting block; 66. Second groove; 67. Third groove; 7. Fixture operating mechanism; 8. First connecting block; 9. Operating lever; 10. Second connecting block; 11. Round hole block; 12. Third connecting arm; 121. Upper clamping block; 13. Clamping block; 14. T-shaped connecting block; 15. L-shaped connecting block; 16. Curved support column; 17. Column head; 18. Washer; 19. Pin. Detailed Implementation

[0025] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1:

[0027] Please see Figures 1-4 In this embodiment of the utility model, a spot welding positioning fixture for the rear floor and rear crossbeam of an automobile includes a base plate, a first metal plate, and a support device.

[0028] The support device includes a first connecting base 3, a second connecting base 5, a third connecting seat 6, a clamping operating mechanism 7, and a clamping block 13. The third connecting seat and the clamping operating mechanism are connected through a round hole block 11 and a third connecting arm 12. A clamping block 13 is provided between the third connecting arm and the second connecting base.

[0029] With the above setup, during the spot welding process, the base plate, the first base, the second base, and the lower part of the clamping block remain fixed. The rotating control lever drives the third connecting arm and the upper part of the clamping block to lift and lower through the rotation of the circular hole block, cooperating with the lower part of the clamping block to finally achieve the clamping of the automotive rear floor workpiece and the automotive rear floor crossbeam workpiece.

[0030] Compared with the prior art, the present invention provides a spot welding positioning fixture for the rear floor and rear crossbeam of an automobile, which allows the clamping blocks fixing the upper surface of the workpiece to be quickly raised and lowered by rotating the control lever, while the clamping blocks fixing the lower surface of the workpiece remain stationary. This makes the positioning and clamping operation of the workpiece quick and simple, and more convenient during the welding process.

[0031] The method of using this utility model is as follows:

[0032] S1. Connect the first metal plate 2 to the base 1 using bolts and tighten them securely;

[0033] S2. Place the first connecting base 3 on the first metal plate 2, and fasten the first connecting base to the first metal plate with bolts;

[0034] S3. Align the countersunk hole on the side of the second connecting base 5 with the countersunk hole on the side of the first connecting base 3, and fix them together with bolts.

[0035] S4. Place the lower part of the third connecting seat 6 on the upper surface of the second connecting base 5, and use a bolt to fix the lower part of the third connecting seat through the through hole;

[0036] S5. Connect the control lever 9, the first connecting block 8, the second connecting block 10 and the third connecting arm with bolts to complete the assembly of the clamp control mechanism 7.

[0037] S6. Place the clamping mechanism 7 on the upper surface of the second connecting base 5, align the bolt holes on the side of the first connecting block 8 and the bolt holes on the side of the second connecting base 5, and complete the fixed connection between the clamping mechanism 7 and the second connecting base 5 by bolts.

[0038] S7. Align the left end through hole on the upper surface of the third connecting arm 12 with the right end through hole on the lower surface of the round hole block 11, and fasten the connection with bolts.

[0039] S8. The upper part of the clamping block 13 is fastened to the right end of the third connecting arm 12 by bolts, and the lower part of the clamping block 13 is fastened to the right end of the upper surface of the second connecting base 5 by bolts.

[0040] S9, the lower part of the base plate 1, the first connecting base 3 together with the second connecting base 5 and the third connecting base 6 are fixed to the lower part of the clamping block 13. Rotate the operating lever 9 counterclockwise, and the rotation of the round hole block 11 will drive the upper part of the third connecting arm 12 and the clamping block 13 to lift upward. At this time, the car rear floor workpiece and the car rear floor crossbeam workpiece are placed. Rotate the operating lever 9 clockwise, and the upper and lower parts of the clamping block 13 will clamp the upper and lower surfaces of the workpiece to achieve the clamping function, which facilitates welding operations.

[0041] Example 2:

[0042] Please see Figures 1-6In this embodiment of the utility model, a spot welding positioning fixture for the rear floor and rear crossbeam of an automobile, compared with embodiment 1, further includes a curved support device composed of a T-shaped connecting block 14, an L-shaped connecting block 15 and a curved support column 16. The T-shaped connecting block and the L-shaped connecting block are connected by fastening bolts. The curved support column is composed of an upper column head 17, a middle washer 18 and a lower pin 19, and is fastened through the through hole on the top surface of the L-shaped connecting block.

[0043] In this embodiment, the top surface of the upper part of the clamping block 13 and the bottom surface of the lower part of the upper clamping block 121 are both inclined surfaces, which can effectively clamp and fix the curved part of the car floor. In addition, the curved surface support device can well match the holes in the car floor workpiece. Specifically, when the workpiece is placed, the column head 17 passes through the corresponding hole of the workpiece, and the washer 18 supports the workpiece after contacting it, thereby assisting the clamping block in fixing the curved part of the car floor.

[0044] This utility model provides a spot welding positioning fixture for the rear floor and rear crossbeam of an automobile. Through the combined action of the clamping block and the curved surface support device, the curved surface part of the lower floor of the automobile can be well clamped and fixed. While quickly and easily clamping the workpiece, the welding angle can be accurately guaranteed.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spot welding positioning fixture for the rear floor and rear crossbeam of an automobile, characterized in that: Includes a base plate (1), on which a number of first metal plates (2) are fixed, and on which a first connecting base (3) is connected; a supporting structure is fixed on the first connecting base (3) located around the base plate (1), and a supporting structure is fixed on the top of the first connecting base (3) located in the middle of the base plate (1); The clamping structure includes a second connecting base (5) fixed to the top of the first connecting base (3), and a clamping operating mechanism (7) is hinged to the top outer end of the second connecting base (5); the clamping operating mechanism (7) includes a second connecting block (10) hinged to the top outer end of the second connecting base (5), a plurality of operating rods (9) with different tilt angles are fixed to the outside of the second connecting block (10), and a round hole block (11) is fixed to the inside. One end of the round hole block (11) is connected to the third connecting arm (12), and an upper clamping block (121) is fixed to the bottom of the other end of the third connecting arm (12); a support arm is connected to one side of the first connecting base (3), and a clamping block (13) that cooperates with the upper clamping block (121) is fixed on the support arm; the support structure includes a connecting plate (31), and a U-shaped support plate (32) is fixedly connected to the connecting plate (31).

2. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 1, characterized in that: A third connecting seat (6) is fixed on the second connecting base (5). The third connecting seat (6) is H-shaped in general. The top of the third connecting seat (6) is engaged with the third connecting arm (12).

3. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 2, characterized in that: The third connecting seat (6) includes several stacked adjusting blocks (61), with a top limiting block (62) stacked on top of the adjusting blocks (61); both the adjusting blocks (61) and the top limiting block (62) have vertical countersunk holes (63) formed in the middle, and bolts pass through the countersunk holes (63) to connect the top limiting block (62) and the top limiting block (62) together; the bottom of the adjusting block (61) has a first groove (64), and the top has a first limiting block (65) that mates with the first groove (64); the bottom of the top limiting block (62) has a second groove (66) that mates with the first limiting block (65), and the top has a third groove (67) that mates with the third connecting arm (12).

4. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 1, characterized in that: The surfaces of the base plate (1) and the first metal plate (2) are provided with multiple reference holes. The first metal plate (2) is fixedly connected to the reference holes of the base plate (1) by bolts.

5. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 1, characterized in that: A triangular reinforcing rib (4) is installed on the first connecting base (3).

6. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 1, characterized in that: A curved support device is installed on the third connecting arm (12). The curved support device includes a T-shaped connecting block (14) fixedly connected to the third connecting arm (12), an L-shaped connecting block (15) connected to the T-shaped connecting block (14), and a curved support column (16) connected to the top of the L-shaped connecting block (15).

7. The spot welding positioning fixture for the rear floor and rear crossbeam of an automobile according to claim 6, characterized in that: The curved support column (16) includes a pin (19) fixedly connected to an L-shaped connecting block (15), a washer (18) fixed in the middle of the pin (19), and a column head (17) fixed at the top.

8. A spot welding positioning fixture for a car rear floor and rear crossbeam according to any one of claims 1-7, characterized in that: The top of the clamping block (13) and the bottom of the upper clamping block (121) are mutually cooperating inclined surfaces.

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