Welding positioning structure for front door and rear door of automobile

Abstract

The utility model discloses an automobile front and rear door welding positioning structure, which relates to the technical field of automobile doors and comprises a positioning table body, a welding device is arranged at the top of the positioning table body, two first threaded rods are arranged at the top of the positioning table body, and a placing structure is arranged between the two first threaded rods. The two ends of the outer sides of the first threaded rods are rotationally connected with supporting block bases correspondingly, a first hand wheel handle is rotated, a first worm gear is meshed with a first worm, the first worm gear drives four limiting blocks on the other disc to rotate through the other rotating shaft, and therefore one first threaded rod is driven to rotate through the other flange plate; wherein one chain wheel and the other chain wheel are in transmission through a chain, synchronous rotation of the two first threaded rods is achieved, the two first threaded rods are in threaded connection with the two moving blocks correspondingly, and the vehicle door containing table can move, so that the problem that the vehicle door containing table cannot be adjusted under the condition that a motor breaks down is solved, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle door technology, specifically a welding positioning structure for the front and rear doors of an automobile. Background Technology

[0002] Car doors provide access for drivers and passengers, isolate them from external interference, and mitigate side impacts to some extent, protecting occupants. During car door manufacturing, welding is required. With technological advancements, laser welding technology is now widely used. Laser welding involves a laser generator emitting high-energy laser pulses, which are then emitted through a laser head. These pulses locally heat and melt the material within a small area, forming a specific molten pool, thus completing the welding process.

[0003] The current announcement number CN218487521U describes a positioning fixture for welding automobile doors, including a positioning platform. A door placement platform is slidably provided on the top of the positioning platform. An auxiliary mechanism is provided outside the positioning platform. The auxiliary mechanism includes two fixing blocks 1 and two fixing blocks 2. Fixing blocks 1 and fixing blocks 2 are both fixedly connected to the top of the positioning platform, and fixing blocks 1 are located in front of fixing blocks 2. A motor 1 is fixedly connected to the rear side of one of the fixing blocks 2. Threaded rods 1 are provided on the front exterior of both fixing blocks 1. The two threaded rods 1 extend to the rear exterior of the two fixing blocks 2 respectively, and one of the threaded rods 1 is fixedly connected to the output shaft of the motor 1.

[0004] In the above scheme, controlling the rotation direction of motor one can control the forward and backward movement direction of threaded block one. The movement of threaded block one drives the door placement platform to move, thereby controlling the forward and backward movement direction of the door. However, if motor one malfunctions under normal working conditions, it takes time for personnel to troubleshoot, and therefore the forward and backward movement of the door placement platform cannot be adjusted. Instead, it will affect the use effect of the device and reduce its practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a welding positioning structure for the front and rear doors of automobiles, so as to solve the problem that if the motor of the device proposed in the prior art fails under normal working conditions, it takes time for personnel to troubleshoot and therefore the door placement platform cannot be moved and adjusted back and forth.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding positioning structure for front and rear doors of an automobile, comprising a positioning platform, a welding device on the top of the positioning platform, two first threaded rods on the top of the positioning platform, a placement structure between the two first threaded rods, a support block seat rotatably connected to both ends of the outer side of each first threaded rod, the support block seat being fixedly connected to the top of the positioning platform, a transmission structure between the two first threaded rods, a flange fixedly connected to both ends of one of the first threaded rods, a long plate on the outer side of the positioning platform, an adjustment structure between the long plate and the positioning platform, a disc on both sides of the top of the long plate, a rotating shaft fixedly connected to one side of each disc, a shaft seat rotatably connected to the outer side of each rotating shaft, the shaft seat being fixedly connected to the top of the long plate, a driving component and a manual operating component respectively provided at one end of each of the two rotating shafts, and four limiting blocks fixedly connected to the other side of each disc, wherein the four limiting blocks are respectively disposed in four holes on one of the flanges.

[0007] Preferably, the placement structure includes a door placement platform, which is disposed on the top of the positioning platform. Movable blocks are fixedly connected to both sides of the door placement platform. The two movable blocks are respectively threaded to the outside of two first threaded rods. Two convex blocks are fixedly connected to the bottom of the door placement platform. Two convex grooves are opened on the top of the positioning platform. The two convex blocks are respectively disposed in the two convex grooves and slidably connected to the positioning platform. The arrangement of the two convex blocks can improve the stability of the door placement platform movement.

[0008] Preferably, the transmission structure includes two sprockets, which are respectively fixedly connected to the outer side of one end of two first threaded rods, and the two sprockets are connected by a chain drive.

[0009] Preferably, the adjustment structure includes a long groove, which is formed on one side of the positioning platform. A long plate is disposed inside the long groove and slidably connected to it. A connecting groove is formed on the inner side of the long groove. An adjustment block is fixedly connected to the outer side of the long plate. The adjustment block passes through the connecting groove and is slidably connected to the positioning platform. A second threaded rod is threadedly connected to the inner side of the adjustment block. Both ends of the second threaded rod are rotatably connected to connecting seats. Both connecting seats are fixedly connected to the positioning platform. The two connecting seats provide rotational support for the second threaded rod.

[0010] Preferably, the adjustment structure further includes a second worm gear, which is fixedly connected to one end of the second threaded rod. A second worm is meshed with the outer side of the second worm gear, and support blocks are rotatably connected to both ends of the outer side of the second worm. Both support blocks are fixedly connected to the positioning platform. A second handwheel is installed at the top of the second worm.

[0011] Preferably, the driving component includes a motor, which is fixedly connected to one side of the top of the long plate, and the output end of the motor is fixedly connected to one of the rotating shafts.

[0012] Preferably, the manual operating component includes a first worm gear, which is disposed on the other side of the top of the long plate. The first worm gear is fixedly connected to one end of another rotating shaft. A first worm is meshed with the outer side of the first worm gear. Connecting blocks are rotatably connected to both ends of the outer side of the first worm. Both connecting blocks are fixedly connected to another shaft seat. A first handwheel handle is installed at one end of the first worm. The two connecting blocks provide rotational support for the first worm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This application achieves synchronous rotation of two first threaded rods by rotating a first handwheel handle, engaging a first worm gear with a first worm, and driving four limit blocks on another disc to rotate via another shaft. This, in turn, drives one of the first threaded rods to rotate via another flange. One sprocket and the other sprocket are driven by a chain, enabling the two first threaded rods to rotate synchronously. The two first threaded rods are threadedly connected to two moving blocks, allowing the door placement platform to move. This solves the problem of not being able to adjust the door placement platform when the motor malfunctions, thus improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a welding positioning structure for the front and rear doors of an automobile according to this utility model;

[0016] Figure 2 This is a schematic diagram of a door placement platform structure for a welding and positioning structure of the front and rear doors of an automobile, according to the present invention.

[0017] Figure 3 This utility model relates to a welding positioning structure for the front and rear doors of an automobile. Figure 1 Enlarged view of the A-section structure;

[0018] Figure 4 This utility model relates to a welding positioning structure for the front and rear doors of an automobile. Figure 1 Enlarged view of the structure of section B;

[0019] Figure 5 This utility model relates to a welding positioning structure for the front and rear doors of an automobile. Figure 1 Enlarged view of the C-section structure.

[0020] The following are the labeling elements in the diagram: 1. Positioning platform; 200. Welding equipment; 3. Door placement platform; 300. Convex block; 301. Convex groove; 4. First threaded rod; 400. Sprocket; 5. Moving block; 6. Support block seat; 7. Flange; 8. Long groove; 800. Connecting groove; 9. Long plate; 10. Disc; 11. Limiting block; 12. Rotating shaft; 13. Shaft seat; 14. First worm gear; 15. First worm; 16. Motor; 17. Adjusting block; 18. Second threaded rod; 19. Connecting seat; 20. Second worm gear; 21. Second worm. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Figure 1 - Figure 5 As shown, this utility model provides a technical solution for a welding positioning structure for the front and rear doors of an automobile, including a positioning platform 1. A welding device 200 is installed on the top of the positioning platform 1. Two first threaded rods 4 are provided on the top of the positioning platform 1, and a placement structure is provided between the two first threaded rods 4. The placement structure includes a door placement platform 3, which is located on the top of the positioning platform 1. Movable blocks 5 are fixedly connected to both sides of the door placement platform 3. The two movable blocks 5 are threadedly connected to the outer sides of the two first threaded rods 4. Two convex blocks 300 are fixedly connected to the bottom of the door placement platform 3. Two convex grooves 301 are opened on the top of the positioning platform 1. The two convex blocks 301 are respectively disposed inside the two convex grooves 301 and slidably connected to the positioning platform 1. Support blocks 6 are rotatably connected to both ends of the outer sides of the first threaded rods 4, and the support blocks 6 are fixedly connected to the positioning platform 1. At the top of the positioning platform 1, a transmission structure is provided between the two first threaded rods 4. The transmission structure includes two sprockets 400, which are fixedly connected to the outer side of one end of the two first threaded rods 4 respectively. The two sprockets 400 are connected to each other by a chain drive. Flanges 7 are fixedly connected to both ends of one of the first threaded rods 4. A long plate 9 is provided on the outer side of the positioning platform 1. An adjustment structure is provided between the long plate 9 and the positioning platform 1. A disc 10 is provided on both sides of the top of the long plate 9. A rotating shaft 12 is fixedly connected to one side of the disc 10. A bearing seat 13 is rotatably connected to the outer side of the rotating shaft 12. The bearing seat 13 is fixedly connected to the top of the long plate 9. A driving component and a manual operation component are respectively provided at one end of the two rotating shafts 12. Four limiting blocks 11 are fixedly connected to the other side of the disc 10. The four limiting blocks 11 are respectively set in four holes on one of the flanges 7.

[0023] The adjustment structure includes a long groove 8, which is located on one side of the positioning platform 1. A long plate 9 is disposed inside the long groove 8 and slidably connected to it. A connecting groove 800 is formed on the inner side of the long groove 8. An adjustment block 17 is fixedly connected to the outer side of the long plate 9. The adjustment block 17 passes through the connecting groove 800 and is slidably connected to the positioning platform 1. A second threaded rod 18 is threadedly connected to the inner side of the adjustment block 17. Both ends of the second threaded rod 18 are rotatably connected to connecting seats 19. Both connecting seats 19 are fixedly connected to the positioning platform 1. The adjustment structure also includes a second worm gear 20, which is fixedly connected to one end of the second threaded rod 18. A second worm 21 is meshed with the outer side of the second worm gear 20. Both ends of the second worm 21 are rotatably connected to supporting blocks. Both supporting blocks are fixedly connected to the positioning platform 1. A second handwheel handle is installed at the top of the second worm 21.

[0024] The driving component includes a motor 16, which is fixedly connected to one side of the top of the long plate 9. The output end of the motor 16 is fixedly connected to one of the rotating shafts 12. The manual operating component includes a first worm gear 14, which is located on the other side of the top of the long plate 9. The first worm gear 14 is fixedly connected to one end of another rotating shaft 12. A first worm 15 is meshed with the outer side of the first worm gear 14. Both ends of the outer side of the first worm 15 are rotatably connected to connecting blocks. Both connecting blocks are fixedly connected to another bearing 13. A first handwheel handle is installed at one end of the first worm 15.

[0025] Specifically, for the technology of welding equipment 200, the solution in the positioning tooling for welding automobile doors, which is disclosed in CN218487521U, is adopted.

[0026] Turning the second handwheel handle engages the second worm gear 21 with the second worm wheel 20, which in turn drives the second threaded rod 18 to rotate. The second threaded rod 18 is threadedly connected to the adjusting block 17, and it moves the long plate 9. At this time, the second threaded rod 18 moves the two discs 10, and the four limiting blocks 11 on one of the discs 10 move out of the holes on one of the flanges 7. The motor 16 moves away from one end of the first threaded rod 4, adjusting the four limiting blocks 11 on the other disc 10 into the holes on the other flange 7. Then, turning the first handwheel handle... The first worm gear 14 meshes with the first worm 15. The first worm gear 14 drives the four limit blocks 11 on another disc 10 to rotate through another rotating shaft 12. Therefore, it drives one of the first threaded rods 4 to rotate through another flange 7. One sprocket 400 and the other sprocket 400 are driven by a chain to realize the synchronous rotation of the two first threaded rods 4. The two first threaded rods 4 are respectively threadedly connected to two moving blocks 5. The door placement platform 3 can be moved. Therefore, it solves the problem that the door placement platform 3 cannot be adjusted when the motor 16 fails, and improves the practicality of the device.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A welding positioning structure for front and rear doors of an automobile, characterized in that: The system includes a positioning platform (1), a welding device (200) on the top of the positioning platform (1), two first threaded rods (4) on the top of the positioning platform (1), a placement structure between the two first threaded rods (4), a support block seat (6) rotatably connected to both ends of the outer side of the first threaded rod (4), the support block seat (6) fixedly connected to the top of the positioning platform (1), a transmission structure between the two first threaded rods (4), a flange (7) fixedly connected to both ends of one of the first threaded rods (4), and a long plate (9) on the outer side of the positioning platform (1). An adjustment structure is provided between the long plate (9) and the positioning platform (1). Both sides of the top of the long plate (9) are provided with discs (10). A rotating shaft (12) is fixedly connected to one side of the disc (10). A bearing seat (13) is rotatably connected to the outside of the rotating shaft (12). The bearing seat (13) is fixedly connected to the top of the long plate (9). A driving component and a manual operation component are respectively provided at one end of the two rotating shafts (12). Four limiting blocks (11) are fixedly connected to the other side of the disc (10). The four limiting blocks (11) are respectively set in the four holes on one of the flanges (7).

2. The welding positioning structure for front and rear doors of an automobile according to claim 1, characterized in that: The placement structure includes a door placement platform (3), which is located on the top of the positioning platform (1). Movable blocks (5) are fixedly connected to both sides of the door placement platform (3). The two movable blocks (5) are respectively threaded to the outside of the two first threaded rods (4). Two convex blocks (300) are fixedly connected to the bottom of the door placement platform (3). Two convex grooves (301) are opened on the top of the positioning platform (1). The two convex blocks (300) are respectively located inside the two convex grooves (301) and are slidably connected to the positioning platform (1).

3. The welding positioning structure for front and rear doors of an automobile according to claim 1, characterized in that: The transmission structure includes two sprockets (400), which are fixedly connected to the outer side of one end of two first threaded rods (4), and the two sprockets (400) are connected by chain drive.

4. The welding positioning structure for front and rear doors of an automobile according to claim 1, characterized in that: The adjustment structure includes a long groove (8), which is opened on one side of the positioning platform (1). A long plate (9) is disposed inside the long groove (8) and is slidably connected to the long groove (8). A connecting groove (800) is formed on the inner side of the long groove (8). An adjustment block (17) is fixedly connected to the outer side of the long plate (9). The adjustment block (17) passes through the connecting groove (800) and is slidably connected to the positioning platform (1). A second threaded rod (18) is threadedly connected to the inner side of the adjustment block (17). Both ends of the second threaded rod (18) are rotatably connected to connecting seats (19). Both connecting seats (19) are fixedly connected to the positioning platform (1).

5. The welding positioning structure for front and rear doors of an automobile according to claim 4, characterized in that: The adjustment structure also includes a second worm gear (20), which is fixedly connected to one end of the second threaded rod (18). A second worm (21) is meshed with the outer side of the second worm gear (20). Support blocks are rotatably connected to both ends of the outer side of the second worm (21). Both support blocks are fixedly connected to the positioning platform (1). A second handwheel handle is installed at the top of the second worm (21).

6. The welding positioning structure for front and rear doors of an automobile according to claim 1, characterized in that: The driving component includes a motor (16), which is fixedly connected to one side of the top of the long plate (9), and the output end of the motor (16) is fixedly connected to one of the rotating shafts (12).

7. The welding positioning structure for front and rear doors of an automobile according to claim 1, characterized in that: The manual operating component includes a first worm gear (14), which is located on the other side of the top of the long plate (9). The first worm gear (14) is fixedly connected to one end of another rotating shaft (12). A first worm (15) is meshed with the outer side of the first worm gear (14). Both ends of the outer side of the first worm (15) are rotatably connected to connecting blocks. Both connecting blocks are fixedly connected to another bearing (13). A first handwheel handle is installed at one end of the first worm (15).

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