Automobile front door inner plate polishing equipment

By designing a polishing device for the inner panel of the front door of an automobile, a worm gear and worm wheel mesh to drive a threaded rod, combined with a motor to drive the polishing head to move and adjust its position, the problem of increased labor costs associated with handheld polishing is solved. This achieves automatic alignment and polishing of the horn hole positions, improving the practicality and adaptability of the device.

CN223917571UActive Publication Date: 2026-02-17TIANJIN HAOCHEN TONGDA AUTOMOBILE INSPECTION TOOL CO LTD
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Patent Information

Application Number
CN202520315565.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-26
Publication Date
2026-02-17
Estimated Expiration
2035-02-26

AI Technical Summary

Technical Problem

In existing technologies, when personnel polish the horn holes on the inner panel of a car's front door using a handheld machine, it increases labor costs and reduces the practicality of the device.

Method used

A polishing device for the inner panel of a car front door was designed. By meshing a worm gear and a worm wheel to drive a threaded rod, combined with a motor to drive the polishing head to move and adjust its position, the device can automatically align and polish the horn hole.

Benefits of technology

This invention automates the polishing of multiple horn holes in automotive door inner panels, improving the practicality of spraying equipment at multiple locations, reducing labor costs, and enhancing the device's usability. It meets the automation requirements for polishing various horn hole positions, further enhancing its usability. It also meets the automation requirements for various spraying devices, improving its functionality and adaptability to different spraying equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses automobile front door inner plate polishing equipment, which relates to the technical field of automobile front door inner plate processing, and comprises a workbench, the workbench is provided with a fixing structure, vertical plates are arranged on both sides of the top of the workbench, adjusting structures are arranged between the two vertical plates and the workbench, a top plate is fixedly connected between the two vertical plates, and the top plate is fixedly connected with the workbench. A large cross block is arranged on the top plate, a moving structure is arranged between the large cross block and the top plate, a connecting frame is arranged at the bottom of the large cross block, a lifting structure is arranged between the connecting frame and the large cross block, a transverse plate is arranged at the bottom of the connecting frame, and a driving part is arranged at the top of the transverse plate. The worm wheel drives a third threaded rod to rotate, the third threaded rod is in threaded connection with a small cross block, and the small cross block drives a fourth motor and a polishing head to move through a mounting frame, so that the position of the polishing head can be adjusted according to the horn hole position in the front vehicle door inner plate, and the polishing device can be used for horn hole positions of various sizes.
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Description

Technical Field

[0001] This utility model relates to the field of automotive front door inner panel processing technology, specifically automotive front door inner panel polishing equipment. Background Technology

[0002] The inner front door panel of a car is part of the door structure and mainly serves to support and connect other components. It is usually a relatively robust structural component, which may be made of metal (such as stamped steel sheet) or other high-strength materials. From a structural perspective, it makes an important contribution to the overall strength and stability of the door. It may also contain some structural design elements for installing other components (such as door locks, window regulators, etc.) and may be related to safety-related aspects such as the door's anti-collision performance. The inner front door panel of a car includes the door panel body, horn cover, positioning components, fasteners, and locking components.

[0003] Polishing the horn hole area on the inner panel of the front door is cumbersome when done by hand. If multiple horn hole areas on the inner panel of the front door are to be worked on, it will increase the labor cost and reduce the practicality of the device. Therefore, a polishing device for the inner panel of the front door of a car is designed to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a polishing device for the inner panel of the front door of an automobile, in order to solve the problem that the existing method of polishing by hand-held machine is cumbersome, and that working on multiple horn hole positions on the inner panel of the front door would increase the labor cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polishing device for the inner panel of a car front door, comprising a worktable with a fixed structure, vertical plates on both sides of the top of the worktable, an adjustment structure between the two vertical plates and the worktable, a top plate fixedly connected between the two vertical plates, a large cross block on the top plate, a moving structure between the large cross block and the top plate, a connecting frame at the bottom of the large cross block, a lifting structure between the connecting frame and the large cross block, a horizontal plate at the bottom of the connecting frame, a driving component at the top of the horizontal plate, a supporting structure between the horizontal plate and the connecting frame, a second cross groove at the bottom of the horizontal plate, a worm gear at one end of the horizontal plate, a worm engaged with the outer side of the worm gear, a third threaded rod fixedly connected to one side of the worm gear, one end of the third threaded rod penetrating the horizontal plate and rotatably connected to the horizontal plate, a small cross block threadedly connected to the outer side of the third threaded rod, the small cross block being disposed inside the second cross groove and slidably connected to the horizontal plate, and a polishing structure at the bottom of the small cross block.

[0006] Preferably, the fixing structure includes two first hydraulic rods, both of which are fixedly connected to the top of the workbench. Each of the two first hydraulic rods has a fixing plate fixedly connected to one end opposite to the other. Each of the two fixing plates has a rubber pad installed on one side. The rubber pads can improve the stability of fixing the inner panel of the front door and protect the surface.

[0007] Preferably, the adjustment structure includes two grooves and two sprockets. The two grooves are located on both sides of the top of the worktable, and the two sprockets are located on the front side of the worktable. A first threaded rod is fixedly connected to the inner side of each sprocket. The two first threaded rods pass through the worktable and are rotatably connected to it. The two first threaded rods are respectively located inside the two grooves. A protrusion is threadedly connected to the outer side of each of the two first threaded rods. The two protrusions are respectively located inside the two grooves and are slidably connected to the worktable. The two protrusions are respectively fixedly connected to the bottom of two vertical plates. The two sprockets are connected via a chain drive. A first motor is fixedly connected to the front side of the worktable, and the output end of the first motor is fixedly connected to one of the first threaded rods.

[0008] Preferably, the movable structure includes a first cross groove and a second threaded rod. The first cross groove is formed at the top of the top plate, and the second threaded rod is disposed on the outer side of the top plate. One end of the second threaded rod passes through the top plate and is rotatably connected to the top plate. The large cross block is disposed inside the first cross groove and is threadedly connected to the outer side of the second threaded rod. The large cross block is slidably connected to the top plate. A second motor is fixedly connected to one side of the top plate, and the output end of the second motor is fixedly connected to the second threaded rod.

[0009] Preferably, the lifting structure includes a second hydraulic rod and two sliding rods. The second hydraulic rod is fixedly connected to the inner side of the large cross block, and the bottom end of the second hydraulic rod is fixedly connected to the connecting frame. The two sliding rods are both fixedly connected to the top of the connecting frame, and the top ends of the two sliding rods pass through the large cross block and are slidably connected to the large cross block.

[0010] Preferably, the driving component includes a third motor, which is fixedly connected to the bottom of the connecting frame, and the output end of the third motor passes through the bottom of the connecting frame and is rotatably connected to the connecting frame. The output end of the third motor is fixedly connected to the horizontal plate.

[0011] Preferably, the support structure includes an annular T-groove, which is formed at the bottom of the connecting frame. Two T-shaped sliding pillars are provided inside the annular T-groove. Both T-shaped sliding pillars are slidably connected to the connecting frame, and the bottom ends of both T-shaped sliding pillars are fixedly connected to the horizontal plate. The arrangement of the two T-shaped sliding pillars can improve the support effect on the horizontal plate.

[0012] Preferably, two support blocks are rotatably connected to the outside of the worm gear, and both support blocks are fixedly connected to the cross plate. A rotating handle is installed at one end of the worm gear. The two support blocks provide rotational support for the worm gear.

[0013] Preferably, the polishing structure includes a mounting frame, which is fixedly connected to the bottom of the small cross block. A fourth motor is fixedly connected to the bottom inside the mounting frame. The output end of the fourth motor passes through the bottom inside the mounting frame and is rotatably connected to the mounting frame. A polishing head is mounted on the output end of the fourth motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application uses a worm gear and a worm wheel to mesh, the worm wheel drives the third threaded rod to rotate, the third threaded rod is threadedly connected to a small cross block, and the small cross block drives the fourth motor and polishing head to move through the mounting frame, so that the position of the polishing head can be adjusted according to the horn hole position on the inner panel of the front door, so as to meet the needs of use for horn hole positions of various sizes.

[0016] 2. This application uses the method of adjusting the front-to-back position and left-to-right position of the polishing head to align the polishing head with the horn hole position of the fixed front door inner panel so that the polishing head can perform polishing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the automotive front door inner panel polishing equipment of this utility model.

[0018] Figure 2 This is a sectional view of the top plate of the automotive front door inner panel polishing equipment of this utility model;

[0019] Figure 3 This is a cross-sectional view of the horizontal plate and connecting frame of the automotive front door inner panel polishing equipment of this utility model;

[0020] Figure 4 This utility model relates to a polishing device for the inner panel of a car front door. Figure 3 Enlarged view of the structure of part A.

[0021] The following are the labeling elements in the diagram: 1. Workbench; 2. Vertical plate; 3. Top plate; 4. Groove; 5. Sprocket; 6. First threaded rod; 7. Protrusion; 8. First motor; 9. First hydraulic rod; 10. Fixing plate; 11. First cross groove; 12. Large cross block; 13. Second threaded rod; 14. Second motor; 15. Second hydraulic rod; 16. Connecting frame; 17. Slide rod; 18. Third motor; 19. Horizontal plate; 190. Second cross groove; 20. Worm gear; 21. Worm; 22. Third threaded rod; 23. Small cross block; 24. Mounting frame; 25. Fourth motor; 26. Polishing head; 160. Annular T-groove; 161. T-shaped slide column. Detailed Implementation

[0022] 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.

[0023] Example: Figure 1 - Figure 4 As shown, this utility model provides a technical solution for polishing equipment for the inner panel of a car front door, including a worktable 1. The worktable 1 has a fixed structure, and vertical plates 2 are provided on both sides of the top of the worktable 1. An adjustment structure is provided between the two vertical plates 2 and the worktable 1. A top plate 3 is fixedly connected between the two vertical plates 2. A large cross block 12 is provided on the top plate 3. A moving structure is provided between the large cross block 12 and the top plate 3. A connecting frame 16 is provided at the bottom of the large cross block 12. A lifting structure is provided between the connecting frame 16 and the large cross block 12. A horizontal plate 19 is provided at the bottom of the connecting frame 16. A driving component is provided at the top of the horizontal plate 19. The driving component includes a third motor 18. The third motor 18 is fixedly connected to the bottom of the connecting frame 16. The output end of the third motor 18 passes through the bottom of the connecting frame 16 and is rotatably connected to the connecting frame 16. The output end of the third motor 18 is fixedly connected to the horizontal plate 19. A support structure is provided between the horizontal plate 19 and the connecting frame 16. The structure includes an annular T-groove 160, which is located at the bottom of the connecting frame 16. Two T-shaped sliding pillars 161 are located inside the annular T-groove 160, and both T-shaped sliding pillars 161 are slidably connected to the connecting frame 16. The bottom ends of both T-shaped sliding pillars 161 are fixedly connected to a horizontal plate 19. A second cross groove 190 is located at the bottom of the horizontal plate 19. A worm gear 20 is located at one end of the horizontal plate 19, and a worm 21 is meshed with the outer side of the worm gear 20. Two support blocks are rotatably connected to the outer side of the worm 21, and both support blocks are fixedly connected to the horizontal plate 19. A rotating handle is installed at one end of the worm 21. A third threaded rod 22 is fixedly connected to one side of the worm gear 20. One end of the third threaded rod 22 passes through the horizontal plate 19 and is rotatably connected to the horizontal plate 19. A small cross block 23 is threadedly connected to the outer side of the third threaded rod 22. The small cross block 23 is located inside the second cross groove 190 and is slidably connected to the horizontal plate 19. The bottom of the small cross block 23 has a polished structure.

[0024] The fixed structure includes two first hydraulic rods 9, both of which are fixedly connected to the top of the workbench 1. Each of the two first hydraulic rods 9 is fixedly connected to a fixed plate 10 at one end, and a rubber pad is installed on one side of each of the two fixed plates 10.

[0025] The lifting structure includes a second hydraulic rod 15 and two sliding rods 17. The second hydraulic rod 15 is fixedly connected to the inside of the large cross block 12. The bottom end of the second hydraulic rod 15 is fixedly connected to the connecting frame 16. The two sliding rods 17 are both fixedly connected to the top of the connecting frame 16. The top ends of the two sliding rods 17 pass through the large cross block 12 and are slidably connected to the large cross block 12.

[0026] The polishing structure includes a mounting frame 24, which is fixedly connected to the bottom of the small cross block 23. A fourth motor 25 is fixedly connected to the bottom of the inside of the mounting frame 24. The output end of the fourth motor 25 passes through the bottom of the inside of the mounting frame 24 and is rotatably connected to the mounting frame 24. A polishing head 26 is installed at the output end of the fourth motor 25.

[0027] Specifically, the two first hydraulic rods 9 are activated, the two fixing plates 10 move, and the two rubber pads contact the inner panel of the front door to fix the inner panel of the front door.

[0028] Then, by rotating the rotary handle, the worm 21 meshes with the worm wheel 20, which drives the third threaded rod 22 to rotate. The third threaded rod 22 is threadedly connected to the small cross block 23, which in turn drives the fourth motor 25 and the polishing head 26 to move through the mounting frame 24. This allows the position of the polishing head 26 to be adjusted according to the horn hole position on the inner panel of the front door. Then, the second hydraulic rod 15 is activated. The second hydraulic rod 15, through components such as the connecting frame 16, the horizontal plate 19, and the mounting frame 24, makes the polishing head 26 contact the horn hole position to be polished. Then, the third motor 18 and the fourth motor 25 are activated. The specific models of the third motor 18 and the fourth motor 25 are not limited, but are based on the compatible equipment. The output end of the third motor 18 drives the horizontal plate 19 to rotate, thus enabling the polishing head 26 to rotate around the horn hole position. The output end of the fourth motor 25 can then drive the polishing head 26 to rotate, achieving polishing of the horn hole position. This structural design meets the requirements for use with horn holes of various sizes, improving the practicality of the device.

[0029] When the horizontal plate 19 rotates, the two T-shaped sliding pillars 161 on the horizontal plate 19 slide circumferentially inside the annular T-groove 160, thus improving the stability of the horizontal plate 19.

[0030] Example: Figure 1 - Figure 2As shown, the adjustment structure includes two grooves 4 and two sprockets 5. The two grooves 4 are both located on the top sides of the worktable 1. The two sprockets 5 are both located on the front side of the worktable 1. The inner side of each of the two sprockets 5 is fixedly connected to a first threaded rod 6. The two first threaded rods 6 pass through the worktable 1 and are rotatably connected to the worktable 1. The two first threaded rods 6 are respectively located inside the two grooves 4. The outer side of each of the two first threaded rods 6 is threadedly connected to a protrusion 7. The two protrusions 7 are respectively located inside the two grooves 4 and are slidably connected to the worktable 1. The two protrusions 7 are respectively fixedly connected to the bottom of the two vertical plates 2. The two sprockets 5 are connected by a chain drive. A first motor 8 is fixedly connected to the front side of the worktable 1. The output end of the first motor 8 is fixedly connected to one of the first threaded rods 6.

[0031] The movable structure includes a first cross groove 11 and a second threaded rod 13. The first cross groove 11 is opened at the top of the top plate 3, and the second threaded rod 13 is disposed on the outside of the top plate 3. One end of the second threaded rod 13 passes through the top plate 3 and is rotatably connected to the top plate 3. A large cross block 12 is disposed inside the first cross groove 11 and is threadedly connected to the outside of the second threaded rod 13. The large cross block 12 is slidably connected to the top plate 3. A second motor 14 is fixedly connected to one side of the top plate 3, and the output end of the second motor 14 is fixedly connected to the second threaded rod 13.

[0032] Specifically, the second motor 14 is started. The model of the second motor 14 is not specifically limited, but depends on the compatible equipment. The output end of the second motor 14 drives the second threaded rod 13 to rotate. The second threaded rod 13 is threadedly connected to the large cross block 12. The large cross block 12 then drives the connecting frame 16 and the horizontal plate 19 to move left and right through the second hydraulic rod 15, thereby adjusting the left and right position of the polishing head 26.

[0033] The first motor 8 is started. The specific model of the first motor 8 is not limited, but is based on the compatible equipment. The output end of the first motor 8 drives one of the first threaded rods 6 to rotate. One of the first threaded rods 6 drives one of the sprockets 5 to rotate. The two sprockets 5 are driven by a chain, so the two first threaded rods 6 rotate synchronously. The two first threaded rods 6 are threadedly connected to two protrusions 7 respectively. The two protrusions 7 drive the top plate 3 to move through two vertical plates 2 respectively. The front and rear positions of the polishing head 26 can be adjusted through the top plate 3.

[0034] The polishing head 26 is adjusted in both front-to-back and left-to-right positions to align with the horn hole position on the fixed front door inner panel, so that the polishing head 26 can perform polishing.

[0035] 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. An apparatus for polishing the inner panel of a front door of an automobile, characterized by: The utility model provides a kind of workbench, including fixed structure, the top of the workbench (1) is equipped with vertical plate (2), adjusting structure is equipped between two vertical plate (2) and workbench (1), top plate (3) is fixedly connected between two vertical plate (2), large cross block (12) is equipped on the top plate (3), moving structure is equipped between large cross block (12) and top plate (3), connecting frame (16) is equipped in the bottom of large cross block (12), lifting structure is equipped between the connecting frame (16) and large cross block (12), horizontal plate (19) is equipped in the bottom of connecting frame (16), driving part is equipped on the top of horizontal plate (19), supporting structure is equipped between horizontal plate (19) and connecting frame (16), second cross slot (190) is opened in the bottom of horizontal plate (19), worm gear (20) is equipped in one end of horizontal plate (19), worm gear (20) is engaged and connected with worm (21) outside, third threaded rod (22) is fixedly connected on one side of worm gear (20), one end of third threaded rod (22) penetrates horizontal plate (19) and is rotatably connected with horizontal plate (19), small cross block (23) is threadedly connected outside third threaded rod (22), small cross block (23) is arranged in second cross slot (190) and is slidably connected with horizontal plate (19), polishing structure is equipped in the bottom of small cross block (23).

2. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The fixed structure includes two first hydraulic rods (9), both of which are fixedly connected to the top of the workbench (1), and both of which are fixedly connected with a fixed plate (10) at opposite ends, and both of which are mounted with rubber pads on one side.

3. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The adjusting structure includes two convex grooves (4) and two sprockets (5), both of which are provided on the top of the workbench (1), both of which are provided on the front side of the workbench (1), both of which are fixedly connected with a first threaded rod (6) on the inside, both of which are rotatably connected with the workbench (1), both of which are provided inside the two convex grooves (4), both of which are threadedly connected with a convex block (7) on the outside, both of which are provided inside the two convex grooves (4) and are slidably connected with the workbench (1), both of which are fixedly connected to the bottom of the two vertical plates (2), both of which are connected by a chain drive, and the front side of the workbench (1) is fixedly connected with a first motor (8), and the output end of the first motor (8) is fixedly connected with one of the first threaded rods (6).

4. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The moving structure comprises a first cross slot (11) and a second threaded rod (13), the first cross slot (11) is arranged on the top of the top plate (3), the second threaded rod (13) is arranged on the outside of the top plate (3), one end of the second threaded rod (13) penetrates the top plate (3) and is rotatably connected with the top plate (3), the large cross block (12) is arranged in the first cross slot (11), the large cross block (12) is threadedly connected on the outside of the second threaded rod (13), the large cross block (12) is slidably connected with the top plate (3), and the top plate (3) is fixedly connected with the second motor (14) on one side.

5. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The lifting structure comprises a second hydraulic rod (15) and two slide rods (17), the second hydraulic rod (15) is fixedly connected to the inside of the large cross block (12), the bottom end of the second hydraulic rod (15) is fixedly connected with the connecting frame (16), and the two slide rods (17) are fixedly connected to the top of the connecting frame (16). The top ends of the two slide rods (17) penetrate the large cross block (12) and are slidably connected with the large cross block (12).

6. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The driving member comprises a third motor (18), the third motor (18) is fixedly connected to the inside bottom end of the connecting frame (16), the output end of the third motor (18) penetrates the inside bottom end of the connecting frame (16) and is rotatably connected with the connecting frame (16), and the output end of the third motor (18) is fixedly connected with the horizontal plate (19).

7. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The supporting structure comprises an annular T groove (160), the annular T groove (160) is arranged at the bottom of the connecting frame (16), two T-shaped slide columns (161) are arranged in the annular T groove (160), the two T-shaped slide columns (161) are slidably connected with the connecting frame (16), and the bottom ends of the two T-shaped slide columns (161) are fixedly connected with the horizontal plate (19).

8. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The worm (21) is rotatably connected with two supporting blocks on the outside, the two supporting blocks are fixedly connected with the horizontal plate (19), and one end of the worm (21) is provided with a rotating handle.

9. The automobile front door inner panel polishing apparatus according to claim 1, characterized by: The polishing structure comprises a mounting frame (24), the mounting frame (24) is fixedly connected to the bottom of the small cross block (23), the fourth motor (25) is fixedly connected to the inside bottom end of the mounting frame (24), the output end of the fourth motor (25) penetrates the inside bottom end of the mounting frame (24) and is rotatably connected with the mounting frame (24), and the output end of the fourth motor (25) is provided with a polishing head (26).