External positioning tool for back door of automobile

Abstract

The utility model relates to the technical field of assembly in the automobile manufacturing industry, and provides an automobile back door external positioning tool which comprises a mechanical arm, one end of the mechanical arm is fixedly connected with a positioning frame, the top of the positioning frame is provided with an air cylinder, the bottom of the air cylinder is fixedly connected with a fixing plate, a piston rod is slidably connected in the air cylinder, and the piston rod is fixedly connected with the mechanical arm. A sliding block is fixedly connected to one end of the piston rod, a rack is fixedly connected to one side of the exterior of the sliding block, a rotating rod is rotatably connected to the interior of the positioning frame, a gear is fixedly connected to the exterior of the rotating rod, the gear is meshed with the rack, and a rotating disc is fixedly connected to the bottom of the rotating rod; four guide grooves are formed in the rotating disc, and guide plates are slidably connected into the four guide grooves. According to the technical scheme, the problems that in the prior art, a traditional automobile back door is generally installed manually, time and labor are consumed, the production efficiency is affected, and the precision is low during installation are solved.

Description

Technical Field

[0001] The utility model relates to the assembly technical field of the automobile manufacturing industry, and particularly relates to an external positioning tool for an automobile rear door. Background Art

[0002] With the rapid development of the automobile industry, the automobile manufacturing level has been continuously improved, and people have higher and higher requirements for the appearance quality of automobiles. However, there are many factors affecting the appearance quality of automobiles. In addition to the stamping quality of the outer surface parts of the vehicle body itself, the matching clearance flatness of each assembled part has increasingly become the key to affecting the appearance quality of the vehicle body, and the matching assembly of the four doors and two covers has become the top priority.

[0003] The patent specification with the publication number of CN214024350U discloses a segmented hand-held positioning tool for post-processing wire harness bracket welding, which includes a first hand-held tool and a second hand-held tool sequentially assembled before and after the wire harness bracket; the first hand-held tool is in an arc-shaped thin plate structure, and a plurality of grooves are sequentially formed along the outer edge of the first hand-held tool, and a first positioning hole and a profiling hole are arranged inside the thin plate structure, and a second positioning hole is formed on the side where the second groove is located; the second hand-held tool is in an arc-shaped thin plate structure, and a plurality of card slots are sequentially formed along the outer edge of the second hand-held tool, and a first positioning pin, a second positioning pin and a plurality of profiling holes corresponding to the positions of the brackets are arranged inside the plate.

[0004] However, it is found that the above technical solutions have the following problems in the implementation of related technologies: during the use of the above device, manual operation of the machine is adopted, which is time-consuming and laborious, affecting production efficiency, and when manually operating, due to reasons such as uneven force, the problem of low accuracy will occur. Therefore, further improvement is needed. Content of the Utility Model

[0005] The utility model provides an external positioning tool for an automobile rear door, which solves the problems in the related technologies that the traditional installation of an automobile rear door generally adopts manual installation, which is time-consuming and laborious, affects production efficiency, and has low accuracy during installation.

[0006] The technical solution of the utility model is as follows:

[0007] An external positioning tooling for the rear door of an automobile, comprising a robotic arm, one end of the robotic arm is fixedly connected with a positioning frame, a cylinder is arranged at the top of the positioning frame, the bottom of the said cylinder is fixedly connected with a fixing plate, a piston rod is slidably connected inside the cylinder, one end of the piston rod is fixedly connected with a sliding block, a rack is fixedly connected to one side of the outside of the sliding block, a rotating rod is rotatably connected inside the positioning frame, a gear is fixedly connected to the outside of the rotating rod, the gear is meshed with the rack, a rotating disc is fixedly connected to the bottom of the rotating rod, four guiding grooves are formed inside the rotating disc, guiding plates are slidably connected inside all four of the guiding grooves, fixators are arranged on one side of the outside of all four of the guiding plates, and a fixing plate and a sliding rail are fixedly connected to the bottom of the positioning frame.

[0008] Preferably, the fixing plate is fixedly connected to the top of the positioning frame, and one end of the rotating rod extends to the bottom of the positioning frame.

[0009] Preferably, the sliding block is slidably connected to the top of the positioning frame, and the rack is slidably connected to the top of the positioning frame.

[0010] Preferably, one end of the guiding plate is slidably connected to the inside of the sliding rail, and the four guiding grooves are arranged in a circumferential distribution.

[0011] Preferably, connecting plates are fixedly connected to one side of the outside of all four of the fixators, and first springs are fixedly connected to the tops of all four of the connecting plates.

[0012] Preferably, buckles are fixedly connected to the tops of all four of the connecting plates, and the first springs are fixedly connected to the buckles.

[0013] Preferably, clamping grooves are formed at the tops of all four of the guiding plates, two second springs are fixedly connected to the tops of all four of the guiding plates, hollow boxes are fixedly connected to the tops of all four of the guiding plates, and the two second springs are symmetrically distributed.

[0014] Preferably, sliding plates are slidably connected inside all four of the hollow boxes, the sliding plates are fixedly connected to the two second springs, the bottom of the sliding plate is in contact with the buckle, and the buckle is in contact with the clamping groove.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] 1. In the utility model, the rotating disk rotates in the opposite direction and drives one end of the four guide plates to move along the inner guide of the guide groove to the other end. At the same time, the other end of the guide plate moves inward along the inner part of the sliding rail. The guide plate moves inward and drives the fixer to move inward. At this time, the contact between the four fixers and the four corners of the car back door disappears. The staff only needs to control the mechanical arm to move the positioning frame away. The above work not only facilitates the fixing work of the car back door, but also reduces the manpower handling and installation, improves the production efficiency, and solves the problem that the traditional car back door installation generally adopts manual installation, which is time-consuming and labor-intensive, affects the production efficiency, and has low accuracy during installation;

[0017] 2. In the utility model, the connecting plate is moved by pushing the fixer, and the connecting plate moves while driving the buckle to move. When the buckle moves to the inner entrance of the guide plate and contacts it, the buckle is forced to drive the spring to be compressed and then enter the inner part of the guide plate. When the buckle moves to the slot, the buckle is no longer forced. At this time, the spring will reset and then drive the buckle to reset, and then the fixer will be fixed at one end of the guide plate. At this time, the above work can facilitate the disassembly and maintenance of the fixer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a partial structure diagram of the utility model Figure 1 ;

[0021] Figure 3 It is a partial structure diagram of the utility model Figure 2 ;

[0022] Figure 4 It is a partial structure diagram of the utility model Figure 3 ;

[0023] Figure 5 For this utility model Figure 4 A in the enlarged view;

[0024] Figure 6 It is a schematic diagram of a partial structural cross-section of the utility model.

[0025] In the figure: 1. robotic arm; 2. positioning frame; 3. cylinder; 4. fixing plate; 5. piston rod; 6. sliding block; 7. rack; 8. rotating rod; 9. rotating disc; 10. guiding groove; 11. guiding plate; 12. fixator; 13. sliding rail; 14. connecting plate; 15. first spring; 16. buckle; 17. clamping groove; 18. second spring; 19. hollow box; 20. sliding plate. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0027] Embodiment 1

[0028] As Figures 1 to 3 shown, this embodiment proposes an external positioning tooling for the rear door of an automobile, including a robotic arm 1. One end of the robotic arm 1 is fixedly connected to a positioning frame 2. A cylinder 3 is provided at the top of the positioning frame 2. The bottom of the said cylinder 3 is fixedly connected to a fixing plate 4. A piston rod 5 is slidably connected inside the cylinder 3. One end of the piston rod 5 is fixedly connected to a sliding block 6. One side of the outside of the sliding block 6 is fixedly connected to a rack 7. A rotating rod 8 is rotatably connected inside the positioning frame 2. A gear is fixedly connected to the outside of the rotating rod 8. The gear meshes with the rack 7. The bottom of the rotating rod 8 is fixedly connected to a rotating disc 9. Four guiding grooves 10 are opened inside the rotating disc 9. Four guiding plates 11 are slidably connected inside the four guiding grooves 10. Fixators 12 are provided on one side of the outside of the four guiding plates 11. Four sliding rails 13 are fixedly connected to the bottom of the positioning frame 2.

[0029] In this embodiment, the fixing plate 4 is fixedly connected to the top of the positioning frame 2. One end of the rotating rod 8 extends to the bottom of the positioning frame 2, which can facilitate the connection between the rotating rod 8 and the rotating disc 9.

[0030] In this embodiment, the sliding block 6 is slidably connected to the top of the positioning frame 2, and the rack 7 is slidably connected to the top of the positioning frame 2, which can facilitate the movement of the sliding block 6 driven by the telescopic movement of the piston rod 5.

[0031] In this embodiment, one end of the guiding plate 11 is slidably connected to the inside of the sliding rail 13. The four guiding grooves 10 are arranged in a circumferential distribution, which can facilitate the sliding of the four guiding plates 11 along the inside of the four guiding grooves 10.

[0032] During use, the staff first operate the robotic arm 1 to drive the positioning frame 2 and move it to a suitable position of the rear door of the car to be installed. Subsequently, the staff start the air cylinder 3. After the air cylinder 3 starts, it drives the sliding block 6 to move through the piston rod 5. When the sliding block 6 moves, it drives the rack 7 to move. When the rack 7 moves, it drives the gear to rotate. When the gear rotates, it drives the rotating rod 8 to rotate. When the rotating rod 8 rotates, it drives the rotating disk 9 to rotate. When the rotating disk 9 rotates, it drives one end of the four guide plates 11 to move along the internal guide of the guide groove 10. At the same time, the other end of the guide plate 11 moves outward along the inside of the sliding rail 13. When the guide plate 11 moves, it drives the fixator 12 to move outward. When the four fixators 12 move outward, they come into contact with the four corners of the rear door of the car. At this time, through the contact between the four fixators 12 and the four corners of the rear door of the car, it can be fixed. Subsequently, after the staff continue to control the robotic arm 1 to move to the required installation position, they control the air cylinder 3 to drive the piston rod 5 to move in the reverse direction. When the piston rod 5 moves, it drives the sliding block 6 to move. When the sliding block 6 moves, it drives the rack 7 to move. When the rack 7 moves, it drives the gear to rotate in the reverse direction. When the gear rotates in the reverse direction, it drives the rotating rod 8 to rotate. When the rotating rod 8 rotates, it drives the rotating disk 9 to rotate in the reverse direction. When the rotating disk 9 rotates in the reverse direction, it drives one end of the four guide plates 11 to move along the internal guide of the guide groove 10 to the other end. At the same time, the other end of the guide plate 11 moves inward along the inside of the sliding rail 13. When the guide plate 11 moves inward, it drives the fixator 12 to move inward. At this time, the contact between the four fixators 12 and the four corners of the rear door of the car disappears. The staff only need to control the robotic arm 1 to remove the positioning frame 2. Through the above work, it not only facilitates the fixing work of the rear door of the car, but also reduces the manual handling and installation, improving the production efficiency.

[0033] Embodiment 2

[0034] As Figures 4 to 6 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that one side of the outside of each of the four fixators 12 is fixedly connected with a connecting plate 14, and a first spring 15 is fixedly connected to the top of each of the four connecting plates 14.

[0035] In this embodiment, a buckle 16 is fixedly connected to the top of each of the four connecting plates 14, and the first spring 15 is fixedly connected to the buckle 16, which can facilitate the first spring 15 to drive the buckle 16 to expand and contract when it expands and contracts.

[0036] In this embodiment, a card slot 17 is opened at the top of each of the four guide plates 11, two second springs 18 are fixedly connected to the top of each of the four guide plates 11, and a hollow box 19 is fixedly connected to the top of each of the four guide plates 11. The two second springs 18 are symmetrically arranged, which can facilitate the buckle 16 to be fixed inside the card slot 17.

[0037] In this embodiment, a sliding plate 20 is slidably connected inside each of the four hollow boxes 19. The sliding plate 20 is fixedly connected to two second springs 18. The bottom of the sliding plate 20 is in contact with the buckle 16, and the buckle 16 is in contact with the card slot 17, which facilitates the movement of the sliding plate 20 to drive the buckle 16 to move into the inside of the guide plate 11 at the same time.

[0038] When the fixer 12 is worn to a certain extent during long-term use, during maintenance, the staff can press the sliding plate 20 to drive the second spring 18 to compress downward. When the bottom of the sliding plate 20 moves to contact the buckle 16, the bottom of the sliding plate 20 will drive the buckle 16 to move downward along the card slot 17 into the inside of the guide plate 11. At this time, the staff can pull the fixer 12 to drive the connecting plate 14 to move. When the connecting plate 14 moves, it will drive the buckle 16 to move. When the buckle 16 moves outside the guide plate 11, it is okay. When installation is required, the staff can push the fixer 12 to drive the connecting plate 14 to move. When the connecting plate 14 moves, it will drive the buckle 16 to move. When the buckle 16 moves to the entrance of the inside of the guide plate 11 and contacts it, the buckle 16 will be forced to drive the first spring 15 to compress and then enter the inside of the guide plate 11. When the buckle 16 moves to the card slot 17, the buckle 16 is no longer stressed. At this time, the first spring 15 will reset and drive the buckle 16 to reset, and then the fixer 12 will be fixed at one end of the guide plate 11.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An external positioning tool for a car back door, comprising a mechanical arm (1), characterized in that: One end of the mechanical arm (1) is fixedly connected to a positioning frame (2), a cylinder (3) is provided on the top of the positioning frame (2), a fixed plate (4) is fixedly connected to the bottom of the cylinder (3), a piston rod (5) is slidably connected inside the cylinder (3), one end of the piston rod (5) is fixedly connected to a sliding block (6), an outer side of the sliding block (6) is fixedly connected to a rack (7), a rotating rod (8) is rotatably connected inside the positioning frame (2), a gear is fixedly connected to the outer side of the rotating rod (8), the gear is meshed with the rack (7), a rotating disk (9) is fixedly connected to the bottom of the rotating rod (8), four guide grooves (10) are provided inside the rotating disk (9), guide plates (11) are slidably connected to the inner sides of the four guide grooves (10), and a fixer (12) is provided on the outer side of the four guide plates (11), and a sliding rail (13) of the fixed plate (4) is fixedly connected to the bottom of the positioning frame (2).

2. The external positioning tool for the rear door of an automobile according to claim 1, characterized in that: The fixing plate (4) is fixedly connected to the top of the positioning frame (2), and one end of the rotating rod (8) extends to the bottom of the positioning frame (2).

3. The external positioning tool for the rear door of an automobile according to claim 1, characterized in that: The sliding block (6) is slidably connected to the top of the positioning frame (2), and the rack (7) is slidably connected to the top of the positioning frame (2).

4. The external positioning tool for the rear door of an automobile according to claim 1, characterized in that: One end of the guide plate (11) is slidably connected to the inside of the sliding rail (13), and the four guide grooves (10) are distributed in a circular shape.

5. The external positioning tool for the rear door of an automobile according to claim 4, characterized in that: A connecting plate (14) is fixedly connected to one side of the outside of the four fixing devices (12), and a spring 1 (15) is fixedly connected to the top of the four connecting plates (14).

6. The external positioning tool for the rear door of an automobile according to claim 5, characterized in that: The tops of the four connecting plates (14) are all fixedly connected with buckles (16), and the spring 1 (15) is fixedly connected to the buckle (16).

7. The external positioning tool for the rear door of an automobile according to claim 6, characterized in that: A slot (17) is provided on the top of each of the four guide plates (11); two springs (18) are fixedly connected to the top of each of the four guide plates (11); a hollow box (19) is fixedly connected to the top of each of the four guide plates (11); and the two springs (18) are symmetrically distributed.

8. The external positioning tool for the rear door of an automobile according to claim 7, characterized in that: The four hollow boxes (19) are all slidably connected to a sliding plate (20), the sliding plate (20) is fixedly connected to the two springs (18), the bottom of the sliding plate (20) is in contact with the buckle (16), and the buckle (16) is in contact with the slot (17).

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