A tooling for welding automotive body tube sheets

Abstract

This utility model relates to the field of automotive body welding technology, and more particularly to a tooling for welding automotive body tube sheets. It includes a support column, on which a hydraulic cylinder is mounted. A supporting copper block is mounted at the output end of the hydraulic cylinder. Telescopic tubes are symmetrically fixedly mounted on both the upper and lower sides of the supporting copper block. One end of each of the two telescopic tubes is connected to a shunt tube, which communicates with the two telescopic tubes. Spring rods are fixedly mounted at both ends of each shunt tube. Support plates are rotatably mounted on both the upper and lower sides of the supporting copper block, with one end of each support plate contacting one of the two shunt tubes. A drive assembly is provided at one end of the supporting copper block. This utility model achieves stable adaptation to supporting tubes of different diameters, eliminating the need to replace dedicated supporting copper blocks or an entire set of tooling for supporting tubes of different diameters. This significantly improves the versatility of the tooling and reduces time and material costs caused by frequent tooling changes during production.

Description

Technical Field

[0001] This utility model relates to the field of automotive body welding technology, and in particular to a tooling for welding automotive body tube sheets. Background Technology

[0002] In automobile body manufacturing, tube-plate welding is a crucial process connecting the window frame and support tubes, and its welding quality directly affects the stability and safety of the vehicle body structure. To ensure the structural integrity of the support tubes during welding and prevent parts from being crushed, deformed, or burned through due to the pressure of the welding clamps, it is essential to...

[0003] Chinese patent CN208840694U discloses a tooling for welding automotive body tube sheets, including an L-shaped support column, a hydraulic cylinder fixed to the upper end of the L-shaped support column by a connecting plate, and a support copper block connected to the top of the hydraulic cylinder. During welding, the support copper block extends from both sides of the support tube to be welded to achieve support and cooling during tube sheet welding.

[0004] The aforementioned patent documents show that the size of the supporting copper block is significantly limited, and it can only be adapted to supporting tubes of a specific diameter. In actual production, the supporting tubes of automobile bodies often have multiple diameter specifications due to different models and locations. When faced with a supporting tube with a diameter larger than the adaptability range of the supporting copper block, the gap between the supporting copper block and the inner wall of the supporting tube increases, which cannot provide effective rigid support and seriously affects the welding quality. Utility Model Content

[0005] The purpose of this utility model is to solve the following shortcomings in the existing technology. In actual production, the support tubes of automobile bodies often have various diameter specifications due to different models and parts. When facing support tubes with a diameter larger than the adaptability range of the support copper block, the gap between the support copper block and the inner wall of the support tube increases, which cannot provide effective rigid support and seriously affects the welding quality. Therefore, a tooling for welding automobile body tube sheets is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A tooling for welding automotive body tube sheets includes a support column, on which a hydraulic cylinder is mounted via a connecting plate, and a supporting copper block is mounted at the output end of the hydraulic cylinder. The supporting copper block is symmetrically fixed with telescopic tubes on both the upper and lower sides. One end of each of the two telescopic tubes on the upper and lower sides is connected to a diversion tube. The diversion tube is connected to the two telescopic tubes. Spring rods are fixedly installed at both ends of the diversion tubes. The two spring rods are vertically fixed on the supporting copper block. The copper support block is rotatably mounted with support plates on both its upper and lower sides. One end of each of the two support plates is in contact with two shunt pipes. One end of the copper support block is provided with a drive assembly for simultaneously driving the two support plates to rotate.

[0007] Preferably, the drive assembly includes an electrically controlled cylinder fixedly installed at one end of the supporting copper block, a rectangular plate fixedly installed at the output end of the electrically controlled cylinder, and multiple support rods symmetrically slidably installed on the two support plates via sliding connection components, wherein the ends of the multiple support rods away from the support plates are fixedly connected to the rectangular plate.

[0008] Preferably, the support plate has symmetrical sliding holes, and the sliding connection component includes an I-shaped sliding seat that is horizontally slidably installed in the sliding hole, with one end of the support rod rotatably connected to the surface of the sliding seat.

[0009] Preferably, a rectangular cavity is formed inside the supporting copper block, a capillary tube is horizontally fixed on the supporting copper block, one end of the capillary tube extends into the rectangular cavity, and a return pipe connected to the inside of the rectangular cavity is installed on the upper surface of the supporting copper block.

[0010] Preferably, the telescopic tube is formed by multiple hollow tubes connected together, and the end of the telescopic tube away from the diverter tube is connected to the inside of the rectangular cavity.

[0011] Preferably, an anti-slip pad is installed on the side of the shunt pipe away from the supporting copper block, and the anti-slip pad is made of rubber.

[0012] The beneficial effects of this utility model are as follows: 1. By driving the support plate to rotate through the drive component, the diversion pipe can be pushed to expand or contract radially, thereby changing the overall outer diameter of the support component. This achieves stable adaptation to support pipes of different diameters, eliminating the need to replace special support copper blocks or a complete set of tooling for support pipes of different diameters. This greatly improves the versatility of tooling and reduces the time and material costs caused by frequent tooling changes during production. 2. The rectangular cavity, capillary tube, and return pipe inside the supporting copper block form the basic cooling circuit. At the same time, the telescopic tube is connected to the rectangular cavity, allowing cooling water to enter the distribution pipe through the telescopic tube, realizing synchronous cooling of the distribution pipe that is in direct contact with the supporting tube. This can quickly remove the heat generated during the welding process and effectively reduce the temperature at the solder joint. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a tooling for welding automotive body tube sheets proposed in this utility model. Figure 2 A three-dimensional structural diagram of the supporting copper block, shunt pipe, support plate and drive assembly; Figure 3A schematic diagram of the three-dimensional cross-sectional structure supporting the copper block, capillary tube, distributor tube, and telescopic tube; Figure 4 A three-dimensional structural diagram of the diversion pipe, telescopic pipe, and spring rod; Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle.

[0014] In the diagram: 1. Support column, 2. Connecting plate, 3. Hydraulic cylinder, 4. Supporting copper block, 5. Telescopic pipe, 6. Diverter pipe, 7. Spring rod, 8. Support plate, 9. Electric control cylinder, 10. Rectangular plate, 11. Support rod, 12. Sliding seat, 13. Capillary tube, 14. Return pipe, 15. Anti-slip pad. Detailed Implementation

[0015] 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.

[0016] Reference Figure 1 A tooling for welding automotive body tube sheets includes a support column 1. A hydraulic cylinder 3 is mounted on the support column 1 via a connecting plate 2. A support copper block 4 is mounted on the output end of the hydraulic cylinder 3. The support column 1 provides basic support for the entire tooling, ensuring structural stability. The connecting plate 2 is used to fix the hydraulic cylinder 3 on the support column 1, ensuring the precise positioning of the hydraulic cylinder 3. The hydraulic cylinder 3 serves as a power source and can drive the support copper block 4 to move horizontally through telescopic movement, allowing the support copper block 4 to extend into or retract into the support tube to be welded. When welding is required, the hydraulic cylinder 3 extends to push the support copper block 4 into the support tube. After welding is completed, the hydraulic cylinder 3 retracts to remove the support copper block 4 from the support tube.

[0017] Reference Figure 2 The support copper block 4 is symmetrically fixed with telescopic tubes 5 on both the upper and lower sides. One end of each of the two telescopic tubes 5 on the upper and lower sides is connected to a diversion tube 6, which is connected to the two telescopic tubes 5. Both ends of the diversion tube 6 are fixed with spring rods 7, which are vertically fixed on the support copper block 4. The telescopic tube 5 is made of multiple hollow tubes connected to each other, and has axial telescopic capability. It can telescopically extend and retract synchronously with the movement of the diversion tube 6, ensuring the connection stability between the diversion tube 6 and the support copper block 4. The diversion tube 6 is a component that directly contacts the inner wall of the support tube and is used to expand the support range and adapt to support tubes of different diameters. The spring rod 7 has an elastic reset function. When the diversion tube 6 expands away from the support copper block 4, the spring rod 7 is stretched and stores elastic potential energy. When it needs to contract, the elastic potential energy is released, driving the diversion tube 6 to reset.

[0018] Support plates 8 are rotatably mounted on both the upper and lower sides of the support copper block 4. One end of each support plate 8 is in contact with one of the two diversion pipes 6. One end of the support copper block 4 is provided with a drive assembly for simultaneously driving the two support plates 8 to rotate.

[0019] The support plate 8 can rotate around the rotation axis of the support copper block 4. The end of the support plate 8 that contacts the diversion pipe 6 can push the diversion pipe 6 to expand radially by rotation. The drive assembly is used to control the rotation angle of the support plate 8, thereby adjusting the expansion range of the diversion pipe 6 to adapt to support pipes of different diameters. When the drive assembly drives the support plate 8 to rotate away from the support copper block 4, the support plate 8 pushes the diversion pipe 6 to expand outward. When the drive assembly is reset, the support plate 8 rotates in the opposite direction, and the diversion pipe 6 contracts under the action of the spring rod 7.

[0020] Reference Figure 5 The drive assembly includes an electrically controlled cylinder 9 fixedly installed at one end of the supporting copper block 4, a rectangular plate 10 fixedly installed at the output end of the electrically controlled cylinder 9, and multiple struts 11 symmetrically slidably installed on two supporting plates 8 via sliding connection components. The ends of the multiple struts 11 away from the supporting plate 8 are all fixedly connected to the rectangular plate 10. The supporting plate 8 is symmetrically provided with sliding holes. The sliding connection component includes an I-shaped sliding seat 12 horizontally slidably installed in the sliding hole. One end of the strut 11 is rotatably connected to the surface of the sliding seat 12.

[0021] The electric cylinder 9 is the power source for the drive assembly. It can move the rectangular plate 10 through telescopic movement. The rectangular plate 10 is used to connect multiple support rods 11, so that the support rods 11 move synchronously. The support rods 11 transmit the power of the electric cylinder 9 to the support plate 8. The rotational connection between the support rods 11 and the sliding of the sliding seat 12 in the sliding hole can convert the linear motion of the electric cylinder 9 into the rotational motion of the support plate 8. When the electric cylinder 9 retracts, the rectangular plate 10 drives the support rods 11 to move towards the support plate 8. The sliding seat 12 slides in the sliding hole, forcing the support plate 8 to rotate outward and pushing the diverter pipe 6 to expand. When the electric cylinder 9 extends, the support rods 11 drive the support plate 8 to rotate in the opposite direction, and the diverter pipe 6 retracts under the action of the spring rod 7.

[0022] Reference Figure 3 and Figure 4 The support copper block 4 has a rectangular cavity inside. A capillary tube 13 is horizontally fixed on the support copper block 4. One end of the capillary tube 13 extends into the rectangular cavity. A return pipe 14 connected to the inside of the rectangular cavity is installed on the upper surface of the support copper block 4. The end of the telescopic pipe 5 away from the diversion pipe 6 is connected to the inside of the rectangular cavity.

[0023] The rectangular cavity serves as a cooling medium channel inside the supporting copper block 4. The capillary tube 13 is used to input cooling water into the rectangular cavity, and the return pipe 14 is used to discharge the cooled water after heat absorption, forming a cooling cycle. The telescopic pipe 5 connects the rectangular cavity to the branch pipe 6, allowing cooling water to flow into the branch pipe 6. During operation, cooling water enters the rectangular cavity from the capillary tube 13. Part of it directly cools the supporting copper block 4, while the other part flows into the branch pipe 6 through the telescopic pipe 5 to cool the supporting pipe in contact with the branch pipe 6. Finally, some cooling water is discharged through the return pipe 14, quickly carrying away the heat generated by welding and preventing the supporting copper block 4 and the branch pipe 6 from being damaged due to overheating.

[0024] An anti-slip pad 15 is installed on the side of the shunt pipe 6 away from the supporting copper block 4. The anti-slip pad 15 is made of rubber. The anti-slip pad 15 increases the friction between the shunt pipe 6 and the inner wall of the supporting pipe, preventing the shunt pipe 6 from sliding relative to the inner wall of the supporting pipe due to welding clamp pressure or vibration during the welding process, thus ensuring the stability of the support.

[0025] In this invention, the drive assembly controls the rotation angle of the support plate 8, thereby adjusting the expansion range of the diversion pipe 6. When one end of the support copper block 4 is inserted into one end of the support pipe, the drive assembly drives the support plate 8 to rotate towards the diversion pipe 6. The support plate 8 pushes the diversion pipe 6 to move away from the support copper block 4. The two diversion pipes 6 expand outward synchronously until they simultaneously contact the inner wall of the support pipe, thus supporting the support pipe. This achieves stable adaptation to support pipes of different diameters, eliminating the need to replace the special support copper block 4 or the entire set of tooling for support pipes of different diameters. This significantly improves the versatility of the tooling and reduces the time and material costs caused by frequent tooling changes during production.

[0026] 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 tooling for welding automotive body tube sheets, comprising a support column (1), characterized in that, A hydraulic cylinder (3) is installed on the support column (1) via a connecting plate (2), and a supporting copper block (4) is installed at the output end of the hydraulic cylinder (3). The supporting copper block (4) is symmetrically fixed with telescopic pipes (5) on both the upper and lower sides. One end of each of the two telescopic pipes (5) on the upper and lower sides is connected to a diversion pipe (6). The diversion pipe (6) is connected to the two telescopic pipes (5). Both ends of the diversion pipe (6) are fixedly installed with spring rods (7). Both spring rods (7) are vertically fixed on the supporting copper block (4). The support copper block (4) is rotatably mounted with support plates (8) on both the upper and lower sides. One end of each of the two support plates (8) is in contact with two shunt pipes (6). One end of the support copper block (4) is provided with a drive assembly for simultaneously driving the two support plates (8) to rotate.

2. The tooling for welding automotive body tube sheets according to claim 1, characterized in that, The drive assembly includes an electrically controlled cylinder (9) fixedly installed at one end of the supporting copper block (4), a rectangular plate (10) fixedly installed at the output end of the electrically controlled cylinder (9), and multiple struts (11) symmetrically slidably installed on the two supporting plates (8) through sliding connection components. The ends of the multiple struts (11) away from the supporting plate (8) are all fixedly connected to the rectangular plate (10).

3. The tooling for welding automotive body tube sheets according to claim 2, characterized in that, The support plate (8) has symmetrical sliding holes. The sliding connection component includes an I-shaped sliding seat (12) that is horizontally slidably installed in the sliding hole. One end of the support rod (11) is rotatably connected to the surface of the sliding seat (12).

4. The tooling for welding automotive body tube sheets according to claim 1, characterized in that, The supporting copper block (4) has a rectangular cavity inside. A capillary tube (13) is horizontally fixed on the supporting copper block (4). One end of the capillary tube (13) extends into the rectangular cavity. A return pipe (14) connected to the inside of the rectangular cavity is installed on the upper surface of the supporting copper block (4).

5. The tooling for welding automotive body tube sheets according to claim 4, characterized in that, The telescopic tube (5) is made up of multiple hollow tubes connected together. The end of the telescopic tube (5) away from the diversion tube (6) is connected to the inside of the rectangular cavity.

6. The tooling for welding automotive body tube sheets according to claim 1, characterized in that, The side of the shunt pipe (6) away from the supporting copper block (4) is equipped with an anti-slip pad (15), which is made of rubber.

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