Ceiling positioning and transferring mechanism for automobile production line

Abstract

The invention relates to an automobile production line ceiling positioning and transferring mechanism, and relates to the technical field of automobile production, the automobile production line ceiling positioning and transferring mechanism comprises a mounting frame and a transferring assembly, a calibration assembly is mounted on the upper surface of the mounting frame, the calibration assembly comprises an electric cylinder, a support, an abutting wheel and a first motor, and the lower surface of the electric cylinder is fixedly connected with the mounting frame; the output end of the electric air cylinder is fixedly connected with the support, the lower end of the abutting wheel is rotationally connected with the support, a positioning assembly is installed on the upper surface of the mounting frame and comprises an electric telescopic rod and a positioning pin, and a walking assembly is installed in the mounting frame. The walking assembly comprises a first rotating rod, a first gear and a first bevel gear. The device has the effects of dynamically calibrating the position of the ceiling to improve the positioning precision, synchronously positioning, triggering and locking to prevent shaking and falling, reciprocating dust removal and disinfection in the transfer process, and simplifying the production process to improve the efficiency and reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a positioning and transfer mechanism for the roof of an automobile production line. Background Technology

[0002] Currently, the automotive manufacturing industry is rapidly developing towards high automation, high cycle time, and high cleanliness. As a core component of the vehicle interior, the transfer and positioning of the headliner in the production line directly affects the overall vehicle assembly efficiency, interior quality, and environmental friendliness. Existing automotive production line headliner transfer mechanisms have initially achieved automated transfer functions, and are generally equipped with basic support structures, walking components, and simple positioning components. They can complete the basic transfer of the headliner from the processing station to the assembly station, which reduces the labor intensity of manual handling to a certain extent and meets the basic needs of traditional production lines. However, as the industry's requirements for production cycle time, product qualification rate, and environmental protection indicators continue to increase, the performance shortcomings of existing mechanisms are gradually becoming a bottleneck for production line upgrades. However, existing canopy transfer mechanisms still have four major flaws, making them difficult to adapt to the needs of modern production lines: First, they lack dynamic calibration capabilities. The canopy needs to be initially placed manually on the support structure. If there is a front-to-back or left-to-right deviation in the initial placement, the mechanism cannot adjust the canopy position autonomously, which can easily lead to misalignment between the positioning pins and the canopy positioning holes. This requires repeated manual adjustments, with each set taking an average of 2-4 minutes, severely slowing down the production line. Furthermore, manual intervention increases the risk of scratches on the canopy surface. Second, the fixing method is simplistic and lacks stability. Fixation is achieved only through lateral clamping plates or bottom supports, without a locking structure that triggers synchronously with the positioning action. When the mechanism starts, stops, or moves along the track, the canopy can easily slide along the support surface, or even slip out of the fixed range due to inertia. This is a significant limitation in the industry for canopy transfer mechanisms. The damage rate is generally over 8%, resulting in a large amount of material waste; thirdly, the lack of integrated cleaning and disinfection functions means that residual plastic processing dust and toxic gases from adhesives during the production of the headliner must be transferred to a dedicated dust removal and disinfection station before being returned to the assembly process. This not only increases the length of the production line by at least 15 meters but also leads to broken process connections and extends the production cycle by more than 30%, while also increasing the procurement and maintenance costs of dust removal equipment; fourthly, even if a few institutions add dust removal components later, they are mostly fixed fan structures with suction range covering only a local area of ​​the headliner. The dust removal rate is insufficient, and toxic gases cannot be effectively discharged, resulting in a noticeable odor inside the car after assembly. This does not meet the current high requirements of consumers for the environmental friendliness of interiors and also increases the risk of after-sales complaints for car manufacturers. To address the aforementioned issues, this application proposes a positioning and transfer mechanism for the roof of an automobile production line. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a positioning and transfer mechanism for the roof of an automobile production line, which solves the problems of inaccurate positioning, easy shaking and falling, asynchronous cleaning and transfer, and incomplete dust removal during the transfer of the roof of the automobile production line.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a roof positioning and transfer mechanism for an automobile production line, comprising a mounting frame and a transfer assembly. A calibration assembly is mounted on the upper surface of the mounting frame. The calibration assembly includes an electric cylinder, a bracket, a stop wheel, and a first motor. The lower surface of the electric cylinder is fixedly connected to the mounting frame, and the output end of the electric cylinder is fixedly connected to the bracket. The lower end of the stop wheel is rotatably connected to the bracket. The output end of the first motor passes through the bracket and is fixedly connected to the stop wheel. The upper surface of the bracket is fixedly connected to the first motor. The upper surface of the mounting frame is equipped with a positioning component, which includes an electric telescopic rod and a positioning pin. The lower end of the electric telescopic rod is fixedly connected to the mounting frame, and the upper end of the electric telescopic rod is fixedly connected to the positioning pin. A stop block is fixedly connected to the side surface of the positioning pin. The number of positioning components is four, and they are distributed in a rectangular array. The mounting frame is equipped with a traveling assembly, which includes a first rotating rod, a first gear, and a first bevel gear. Both ends of the first rotating rod are rotatably connected to the mounting frame. The side surface of the first rotating rod is fixedly connected to the first gear. The first rotating rod passes through the first bevel gear and is fixedly connected to the inner wall of the first bevel gear. The side surface of the first gear is meshed with a rack, and there are two racks that are symmetrically distributed.

[0005] Preferably, the mounting bracket is provided with rollers on both sides, and the number of rollers is four and they are distributed in a rectangular array.

[0006] By adopting the above technical solution, four rectangular arrays of rollers are symmetrically arranged, which makes it easy to initially place the canopy on the rollers. Then, the calibration component is used to clamp the two sides of the canopy for fine-tuning of the horizontal position, thereby adapting it to the positioning component.

[0007] Preferably, the upper surface of the mounting bracket is provided with four limiting components, each limiting component including a slide, a locking tongue, a guide rod, and a spring. The upper surface of the mounting bracket is slidably connected to the slide. One end of the slide is fixedly connected to the locking tongue, and the other end of the slide is fixedly connected to the guide rod. A limiting sleeve is fixedly connected to the upper surface of the mounting bracket. The side surface of the guide rod is slidably connected to the limiting sleeve. The guide rod passes through the interior of the spring. One end of the spring is fixedly connected to the slide, and the other end of the spring is fixedly connected to the limiting sleeve. The outer end of the abutment is in contact with the inclined surface of the slide.

[0008] By adopting the above technical solution and setting a limiting component, when the calibration component finely adjusts the position of the canopy to above the positioning pin, and the positioning hole on the canopy is aligned with the positioning pin, the electric telescopic rod is activated to drive the positioning pin to rise and pass through the positioning hole to complete the positioning. At the same time, the abutment block pushes the slide to slide horizontally as the positioning pin rises. The slide pulls the locking tongue, and the end of the locking tongue reaches directly above the positioning pin to form a lock. The lock is used to limit the canopy and prevent the canopy from falling due to shaking during the transfer and transportation.

[0009] Preferably, a drive assembly is mounted on the mounting bracket. The drive assembly includes a second motor and a second bevel gear. The outer surface of the second motor is fixedly connected to the mounting bracket, the output end of the second motor is fixedly connected to the second bevel gear, and the side surface of the second bevel gear meshes with a first bevel gear.

[0010] By adopting the above technical solution and setting up a drive component, the No. 2 motor drives the No. 2 bevel gear to rotate, which in turn drives the No. 1 bevel gear, thereby causing the No. 1 rotating rod to rotate. Since the No. 1 gear is meshed with the rack, it pushes the mounting frame to move horizontally along the direction of the rack, thereby realizing the transfer.

[0011] Preferably, the rack is provided with a dust removal and disinfection component, which includes a wind box, a second gear, a third bevel gear, a fifth bevel gear, and a fan blade. The two sides of the wind box are rotatably connected to the second gear, the side surface of the second gear meshes with the rack, the end of the second gear is fixedly connected to the third bevel gear, the side surface of the third bevel gear meshes with the fifth bevel gear, and the upper end of the fifth bevel gear is fixedly connected to the fan blade.

[0012] By adopting the above technical solution and setting up a dust removal and disinfection component, the air box is pushed when the mounting frame moves on the rack, which in turn drives the No. 2 gear to rotate. The No. 2 gear drives the fan blades to rotate through the No. 3 and No. 5 bevel gears, forming a downward airflow. The airflow draws away the dust and toxic gases inside the canopy, thereby maintaining cleanliness and disinfection during the transfer and transportation process. This prevents dust from contaminating the inside of the canopy during transportation and affecting product quality. At the same time, it can also draw out some of the toxic gases attached to the inside of the canopy, reducing harmful substances in the vehicle and allowing odors to dissipate faster.

[0013] Preferably, a dustproof net is provided at the air inlet of the air box, and the inner wall of the air box is detachably connected to the dustproof net.

[0014] By adopting the above technical solution, a detachable dust filter is installed at the air inlet, which not only isolates the inhaled dust but also allows for timely replacement, making the operation simple and convenient.

[0015] Preferably, the bellows is internally threaded with a reciprocating threaded rod, one end of which is rotatably connected to the mounting bracket, and the other end of which is fixedly connected to a No. 4 bevel gear. The side surface of the No. 4 bevel gear meshes with a No. 1 bevel gear. The mounting bracket is internally fixedly connected with two symmetrically distributed sliding rods, and the side surfaces of the sliding rods are slidably connected to the bellows.

[0016] By adopting the above technical solution, a reciprocating threaded rod and a fourth bevel gear are set up. The rotation of the first bevel gear drives the fourth bevel gear to rotate simultaneously. The fourth bevel gear drives the reciprocating threaded rod to rotate inside the air box. Since the air box is threadedly connected to the reciprocating threaded rod, the air box moves horizontally back and forth along the slide bar under the drive of the reciprocating threaded rod, realizing the reciprocating motion of the dust removal and disinfection component, thereby expanding the suction range and making the dust removal and disinfection effect better.

[0017] (III) Beneficial Effects In summary, this application includes at least one of the following beneficial technical effects: 1. A car production line roof positioning and transfer mechanism, through a three-in-one design of calibration, positioning, and locking, solves the problems of positioning deviation and transfer swaying. An electric cylinder drives the bracket to move the abutment roller, which can make horizontal fine adjustments to the roof on the roller to ensure that the positioning hole and the positioning pin are accurately aligned. When the positioning pin rises to complete the positioning, the abutment block simultaneously squeezes the slide, causing the locking tongue to slide to form a lock, thus realizing the simultaneous completion of positioning and locking. This design does not require manual intervention, improves positioning accuracy, reduces the roof transfer damage rate, and greatly improves production stability.

[0018] 2. A car production line roof positioning and transfer mechanism, relying on the linkage design of walking power and dust removal function, realizes the coordinated transfer and cleaning and disinfection. When the mounting frame moves along the rack, the rack drives the second gear to rotate, and the fan blade generates a downward suction airflow through bevel gear transmission, which sucks up dust and toxic gases inside the roof in real time. No additional cleaning station is required. This design reduces the length of the production line and reduces process costs. At the same time, the dustproof net can isolate dust and is removable, ensuring stable dust removal effect and improving the cleanliness of the roof interior and the environmental friendliness of the car interior.

[0019] 3. A positioning and transfer mechanism for the roof of an automobile production line, which breaks through the limitations of traditional fixed dust removal through a reciprocating dust removal structure design. When the first bevel gear rotates, it drives the fourth bevel gear simultaneously, so that the reciprocating threaded rod drives the air box to move horizontally back and forth along the slide rod. The suction range covers the entire internal area of ​​the roof, improving the dust removal rate. This design does not require an additional power source and uses the walking power to achieve functional expansion. It has a compact structure and low energy consumption, while simplifying maintenance operations, further improving the practicality and economy of the mechanism. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the calibration component structure of the present invention; Figure 3 This is a schematic diagram of the limiting component structure of the present invention; Figure 4 This is a schematic diagram of the walking component structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the bellows of the present invention; Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point B.

[0021] Explanation of reference numerals in the attached figures: 1. Mounting bracket; 2. Electric cylinder; 3. Bracket; 4. Abutment wheel; 5. Motor No. 1; 6. Roller; 7. Electric telescopic rod; 8. Positioning pin; 9. Abutment block; 10. Slide; 11. Locking tongue; 12. Guide rod; 13. Limit sleeve; 14. Spring; 15. Rotating rod No. 1; 16. Gear No. 1; 17. Bevel gear No. 1; 18. Rack; 19. Motor No. 2; 20. Bevel gear No. 2; 21. Bellows; 22. Gear No. 2; 23. Bevel gear No. 3; 24. Bevel gear No. 5; 25. Fan blade; 26. Dustproof net; 27. Reciprocating threaded rod; 28. Bevel gear No. 4; 29. ​​Slide rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0023] Example: A positioning and transfer mechanism for the roof of an automobile production line, referring to... Figure 1 and Figure 2 The system includes a mounting frame 1 and a transfer assembly. A calibration assembly is mounted on the upper surface of the mounting frame 1. The calibration assembly includes an electric cylinder 2, a bracket 3, a stop roller 4, and a first motor 5. The lower surface of the electric cylinder 2 is fixedly connected to the mounting frame 1, and the output end of the electric cylinder 2 is fixedly connected to the bracket 3. The lower end of the stop roller 4 is rotatably connected to the bracket 3. The output end of the first motor 5 passes through the bracket 3 and is fixedly connected to the stop roller 4. The upper surface of the bracket 3 is fixedly connected to the first motor 5. Rollers 6 are provided on both sides of the mounting frame 1. There are four rollers 6 arranged in a rectangular array. By symmetrically arranging four rectangular array rollers 6, it is easy to initially place the canopy on the rollers 6. Then, the calibration assembly is used to clamp the two sides of the canopy for fine-tuning of the horizontal position, thereby adapting it to the positioning assembly.

[0024] Reference Figure 1 , Figure 3 and Figure 6 The upper surface of the mounting frame 1 is equipped with positioning components, including an electric telescopic rod 7 and a positioning pin 8. The lower end of the electric telescopic rod 7 is fixedly connected to the mounting frame 1, and the upper end of the electric telescopic rod 7 is fixedly connected to the positioning pin 8. A stop block 9 is fixedly connected to the side surface of the positioning pin 8. There are four positioning components arranged in a rectangular array. The upper surface of the mounting frame 1 is provided with four limiting components, including a slide 10, a locking tongue 11, a guide rod 12, and a spring 14. The upper surface of the mounting frame 1 is slidably connected to the slide 10. One end of the slide 10 is fixedly connected to the locking tongue 11, and the other end of the slide 10 is fixedly connected to the guide rod 12. A limiting sleeve 13 is fixedly connected to the upper surface of the mounting frame 1. The side surface of the guide rod 12 slides against the limiting sleeve 13. The guide rod 12 passes through the inside of the spring 14. One end of the spring 14 is fixedly connected to the slide 10, and the other end of the spring 14 is fixedly connected to the limiting sleeve 13. The outer end of the abutment 9 is in contact with the inclined surface of the slide 10. By setting the limiting component, when the calibration component finely adjusts the position of the top part to above the positioning pin 8, and the positioning hole on the ceiling is aligned with the positioning pin 8, the electric telescopic rod 7 is activated to drive the positioning pin 8 to rise and pass through the positioning hole to complete the positioning. At the same time, the abutment 9 pushes the slide 10 to slide horizontally as the positioning pin 8 rises. The slide 10 pulls the locking tongue 11. After the end of the locking tongue 11 reaches directly above the positioning pin 8, it forms a lock. The lock is used to limit the ceiling and prevent the ceiling from falling due to shaking during the transfer and transportation process.

[0025] Reference Figure 1 , Figure 4 and Figure 7 The mounting frame 1 houses a traveling assembly, which includes a first rotating rod 15, a first gear 16, and a first bevel gear 17. Both ends of the first rotating rod 15 are rotatably connected to the mounting frame 1. The side surface of the first rotating rod 15 is fixedly connected to the first gear 16. The first rotating rod 15 passes through the first bevel gear 17 and is fixedly connected to its inner wall. Two racks 18 are meshed with the side surface of the first gear 16 and are symmetrically distributed. A drive assembly, including a second motor 1, is mounted on the mounting frame 1. 9 and the second bevel gear 20, the outer surface of the second motor 19 is fixedly connected to the mounting bracket 1, the output end of the second motor 19 is fixedly connected to the second bevel gear 20, the side surface of the second bevel gear 20 is meshed with the first bevel gear 17. By setting up a drive assembly, the second motor 19 drives the second bevel gear 20 to rotate, which in turn drives the first bevel gear 17, thereby causing the first rotating rod 15 to rotate. Since the first gear 16 is meshed with the rack 18, it pushes the mounting bracket 1 to move horizontally along the direction of the rack 18, thereby realizing the transfer.

[0026] Reference Figure 4 and Figure 5A dust removal and disinfection assembly is installed on the rack 18. This assembly includes a blower box 21, a second gear 22, a third bevel gear 23, a fifth bevel gear 24, and a fan blade 25. Both sides of the blower box 21 are rotatably connected to the second gear 22. The side surface of the second gear 22 meshes with the rack 18. The end of the second gear 22 is fixedly connected to the third bevel gear 23. The side surface of the third bevel gear 23 meshes with the fifth bevel gear 24. The upper end of the fifth bevel gear 24 is fixedly connected to the fan blade 25. By installing this dust removal and disinfection assembly, and utilizing the mounting bracket 1... When the rack 18 moves, it pushes the bellows 21, which in turn drives the second gear 22 to rotate. The second gear 22, through the third bevel gear 23 and the fifth bevel gear 24, drives the fan blades 25 to rotate, forming a downward airflow. This airflow draws away dust and toxic gases from inside the roof, thus maintaining cleanliness and disinfection during transfer and transportation. This prevents dust from contaminating the inside of the roof during transportation and affecting product quality. At the same time, it can also draw in some of the toxic gases attached to the inside of the roof, reducing harmful substances in the vehicle and dissipating odors faster. A dustproof net is installed at the air inlet of the bellows 21. 26. The inner wall of the air box 21 is detachably connected to the dust filter 26. By setting a detachable dust filter 26 at the air inlet, not only can the inhaled dust be isolated on the dust filter 26, but it can also be replaced in time. The operation is simple and convenient. The air box 21 is internally threaded with a reciprocating threaded rod 27. One end of the reciprocating threaded rod 27 is rotatably connected to the mounting bracket 1, and the other end of the reciprocating threaded rod 27 is fixedly connected to a fourth bevel gear 28. The side surface of the fourth bevel gear 28 meshes with a first bevel gear 17. The mounting bracket 1 is internally fixedly connected with two symmetrically distributed... The slide rod 29 has its side surface slidably connected to the bellows 21. By setting a reciprocating threaded rod 27 and a fourth bevel gear 28, the rotation of the first bevel gear 17 simultaneously drives the fourth bevel gear 28 to rotate. The fourth bevel gear 28 drives the reciprocating threaded rod 27 to rotate inside the bellows 21. Since the bellows 21 is threadedly connected to the reciprocating threaded rod 27, the bellows 21 moves horizontally back and forth along the slide rod 29 under the drive of the reciprocating threaded rod 27, realizing the reciprocating motion of the dust removal and disinfection component, thereby expanding the suction range and making the dust removal and disinfection effect better.

[0027] The implementation principle of this invention is as follows: Workers place the car roof to be transferred onto the rollers 6 on both sides of the mounting bracket 1. The four rectangularly arranged rollers 6 provide stable support for the roof. Simultaneously, the rolling characteristics of the rollers 6 reduce frictional resistance during subsequent fine-tuning of the roof, preparing for precise positioning. The electric cylinder 2 outputs power to push the bracket 3 towards the roof until the abutment rollers 4 on the bracket 3 are in contact with both sides of the roof. Then, the first motor 5 starts, driving the abutment rollers 4 to rotate. The abutment rollers 4, through friction with the roof, drive the roof to make horizontal fine-tuning adjustments in the front-back or left-right directions on the rollers 6 until the positioning holes on the roof are precisely aligned with the four rectangularly arranged positioning pins 8 below. After calibration, the electric cylinder 2 drives the bracket 3 to reset, releasing the abutment rollers 4 from clamping the roof. After calibration, the electric telescopic rod 7 of the positioning component is activated. The telescopic rod 7 extends upward, causing the positioning pin 8 to rise. The positioning pin 8 passes through the positioning hole of the ceiling, achieving the initial positioning of the ceiling. At the same time, the abutment 9 on the side surface of the positioning pin 8 rises synchronously with the positioning pin 8. The outer end of the abutment 9 is in contact with the inclined surface of the slide 10 of the limiting component and squeezes the slide 10, causing the slide 10 to slide along the upper surface of the mounting frame 1. One end of the slide 10 pulls the locking tongue 11 to move towards the positioning pin 8, and the other end drives the guide rod 12 to slide along the limiting sleeve 13 and stretch the spring 14. When the positioning pin 8 has completely passed through the positioning hole, the end of the locking tongue 11 moves exactly above the positioning pin 8, forming a vertical lock on the ceiling to prevent the ceiling from shaking or falling during the transfer. The second motor 19 of the drive component is started. The second motor 19 outputs power to drive the second bevel gear 20 to rotate. The second bevel gear 20 drives the first bevel gear 17 to rotate through meshing transmission.The first bevel gear 17 drives the first rotating rod 15, which is fixedly connected to it, to rotate synchronously. The first rotating rod 15 drives the first gear 16 on its side surface to rotate. Since the first gear 16 meshes with the rack 18, the first gear 16 rolls on the rack 18, thereby pushing the mounting frame 1 to move horizontally along the rack 18, realizing the transfer and transportation of the ceiling. When the mounting frame 1 moves, it synchronously drives the dust removal and disinfection components to work. On the one hand, the second gear 22 on both sides of the air box 21 meshes with the rack 18. The movement of the mounting frame 1 drives the air box 21 to move, causing the second gear 22 to roll on the rack 18. The second gear 22 drives the third bevel gear 23 at the end to rotate. The third bevel gear 23 drives the fifth bevel gear 24 to rotate through meshing transmission. The fifth bevel gear 24 drives the upper fan blade 25 to rotate. The fan blade 25 rotates to form a downward... The airflow draws dust and toxic gases from inside the ceiling into the air box 21. The dustproof net 26 at the air inlet of the air box 21 isolates the inhaled dust, preventing secondary pollution. Meanwhile, the rotation of the first bevel gear 17 synchronously drives the rotation of the fourth bevel gear 28, which in turn drives the reciprocating threaded rod 27. Since the air box 21 is threadedly connected to the reciprocating threaded rod 27 and slides with the slide rod 29, the rotation of the reciprocating threaded rod 27 drives the air box 21 to move horizontally back and forth along the slide rod 29, expanding the suction range of the fan blades 25 and improving the dust removal and disinfection effect. After the transfer is complete, the electric telescopic rod 7 retracts, causing the positioning pin 8 to reset. The stop block 9 releases the pressure on the slide 10, the spring 14 rebounds, pulling the slide 10 back to its original position, and the locking tongue 11 disengages from above the positioning pin 8, allowing the staff to remove the ceiling.

[0028] The embodiments described in the specific implementations of this invention are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning and transfer mechanism for the roof of an automobile production line, comprising a mounting frame (1) and a transfer assembly, characterized in that: The upper surface of the mounting bracket (1) is equipped with a calibration component, which includes an electric cylinder (2), a bracket (3), a stop wheel (4) and a first motor (5). The lower surface of the electric cylinder (2) is fixedly connected to the mounting bracket (1), the output end of the electric cylinder (2) is fixedly connected to the bracket (3), the lower end of the stop wheel (4) is rotatably connected to the bracket (3), the output end of the first motor (5) passes through the bracket (3) and is fixedly connected to the stop wheel (4), and the upper surface of the bracket (3) is fixedly connected to the first motor (5). The upper surface of the mounting bracket (1) is equipped with a positioning component, which includes an electric telescopic rod (7) and a positioning pin (8). The lower end of the electric telescopic rod (7) is fixedly connected to the mounting bracket (1), and the upper end of the electric telescopic rod (7) is fixedly connected to the positioning pin (8). A stop block (9) is fixedly connected to the side surface of the positioning pin (8). The number of positioning components is four and they are distributed in a rectangular array. The mounting frame (1) is equipped with a walking assembly, which includes a first rotating rod (15), a first gear (16) and a first bevel gear (17). Both ends of the first rotating rod (15) are rotatably connected to the mounting frame (1). The side surface of the first rotating rod (15) is fixedly connected to the first gear (16). The first rotating rod (15) passes through the first bevel gear (17) and is fixedly connected to the inner wall of the first bevel gear (17). The side surface of the first gear (16) is meshed with a rack (18). There are two racks (18) and they are symmetrically distributed.

2. The positioning and transfer mechanism for the roof of an automobile production line according to claim 1, characterized in that: The mounting bracket (1) is provided with rollers (6) on both sides, and the number of rollers (6) is four and they are distributed in a rectangular array.

3. The positioning and transfer mechanism for the roof of an automobile production line according to claim 1, characterized in that: The upper surface of the mounting bracket (1) is provided with four limiting components, including a slide (10), a locking tongue (11), a guide rod (12) and a spring (14). The upper surface of the mounting bracket (1) is slidably connected to the slide (10). One end of the slide (10) is fixedly connected to the locking tongue (11), and the other end of the slide (10) is fixedly connected to the guide rod (12). A limiting sleeve (13) is fixedly connected to the upper surface of the mounting bracket (1). The side surface of the guide rod (12) is slidably connected to the limiting sleeve (13). The guide rod (12) passes through the inside of the spring (14). One end of the spring (14) is fixedly connected to the slide (10), and the other end of the spring (14) is fixedly connected to the limiting sleeve (13). The outer end of the abutment (9) is in contact with the inclined surface of the slide (10).

4. The positioning and transfer mechanism for the roof of an automobile production line according to claim 1, characterized in that: The mounting bracket (1) is equipped with a drive assembly, which includes a second motor (19) and a second bevel gear (20). The outer surface of the second motor (19) is fixedly connected to the mounting bracket (1), the output end of the second motor (19) is fixedly connected to the second bevel gear (20), and the side surface of the second bevel gear (20) is meshed with a first bevel gear (17).

5. The positioning and transfer mechanism for the roof of an automobile production line according to claim 1, characterized in that: The rack (18) is provided with a dust removal and disinfection component, which includes a wind box (21), a second gear (22), a third bevel gear (23), a fifth bevel gear (24), and a fan blade (25). The two sides of the wind box (21) are rotatably connected to the second gear (22). The side surface of the second gear (22) is meshed with the rack (18). The end of the second gear (22) is fixedly connected to the third bevel gear (23). The side surface of the third bevel gear (23) is meshed with the fifth bevel gear (24). The upper end of the fifth bevel gear (24) is fixedly connected to the fan blade (25).

6. The positioning and transfer mechanism for the roof of an automobile production line according to claim 5, characterized in that: The air inlet of the air box (21) is provided with a dustproof net (26), and the inner wall of the air box (21) is detachably connected to the dustproof net (26).

7. The positioning and transfer mechanism for the roof of an automobile production line according to claim 5, characterized in that: The bellows (21) is internally threaded with a reciprocating threaded rod (27). One end of the reciprocating threaded rod (27) is rotatably connected to the mounting bracket (1), and the other end of the reciprocating threaded rod (27) is fixedly connected with a fourth bevel gear (28). The side surface of the fourth bevel gear (28) meshes with a first bevel gear (17). The mounting bracket (1) is internally fixedly connected with two symmetrically distributed slide rods (29), and the side surface of the slide rods (29) is slidably connected to the bellows (21).

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