CN118876303A - Automobile tire trimming device and use method thereof - Google Patents

Abstract

The present invention discloses a vehicle tire trimming device and a method for using the same, belonging to the technical field of tire production and processing, comprising a base, the top of the base is rotatably connected to a rotating rod, the top of the rotating rod is fixedly connected to a circular plate, an inflatable airbag is fixedly installed on the side wall of the circular plate, the outer wall of the inflatable airbag is sleeved with a tire body, and also comprises a supporting mechanism. The supporting mechanism of the present invention plays a role in supporting the tire body, so that the tire body can maintain a normal shape and structure, avoid the situation where the surface of the tire body is dented or collapsed due to poor stability of the rubber of the tire body after production and molding, and avoid deformation, thereby effectively improving the quality of the tire and improving the puncture removal effect on the tire.

Description

Automobile tire trimming device and use method thereof

Technical Field

The present invention relates to the technical field of tire production and processing, and more specifically, to an automobile tire trimming device and a use method thereof.

Background Art

With the development of social economy and the popularity of automobiles, cars can be seen everywhere in daily life. Automobile tires are round rubber products installed on automobile wheels. Their function is to provide traction, support weight, relieve vibration and transmit power by contacting the ground. Automobile tires are usually composed of carcass, tread and sidewall. Automobile tires are one of the important parts of automobiles. In the production process of tires, some burrs or burrs are left on the surface. These burrs are usually caused by material extrusion or cutting during the production process.

When trimming burrs on the shoulder surface of a tire, the tire is usually placed on a trimming platform manually, and then a trimming tool is attached to the surface of the tire to trim the burrs. This method requires effort for precise trimming, and because the trimming tool is attached to the surface of the tire, it is easy to scratch the surface of the tire, causing damage and cracks on the surface of the tire, thereby affecting the service life of the tire. Scratches on the surface of the tire will destroy the balance of the tire, causing shaking and bumps during driving of the vehicle, which not only reduces driving comfort but also reduces safety.

Summary of the invention

In view of the problems existing in the prior art, the purpose of the present invention is to provide a vehicle tire trimming device and a method of using the same, which can solve the above technical problems.

To solve the above problems, the present invention adopts the following technical solutions.

A tire trimming device for automobiles comprises a base, a rotating rod is rotatably connected to the top of the base, a circular plate is fixedly connected to the top of the rotating rod, an inflatable airbag is fixedly installed on the side wall of the circular plate, a tire body is sleeved on the outer wall of the inflatable airbag, and a supporting mechanism comprises a rotating plate rotatably installed on the top of the circular plate, a telescopic straight tube is fixedly installed on the top of the rotating plate, an L-shaped plate is fixedly installed on one side of the top of the base, an air supply machine is fixedly installed on the bottom of the L-shaped plate, a vertical pipe is fixedly installed on the output end of the air supply machine, magnet rings are fixedly installed on the opposite sides of the vertical pipe and the telescopic straight pipe, a sealing ring is provided between two groups of the magnet rings, the sealing ring is fixedly installed on one group of the magnet rings, the two groups of the magnet rings are magnetically connected, a cross hole is provided in the circular plate, the cross hole is communicated with the inflatable airbag, a through hole is provided on the rotating plate, the through hole is respectively communicated with the telescopic straight tube and the cross hole, a valve is installed in the cross hole, and a trimming mechanism is provided on one side of the tire body.

Furthermore, the trimming mechanism includes a cylinder fixedly mounted on the side wall of the L-shaped plate, the output end of the cylinder is fixedly connected to a baffle, two groups of arc-shaped plastic scrapers are fixedly mounted on the side of the baffle close to the tire body, two groups of arc-shaped plastic scrapers are fixedly mounted on the side close to the tire body, the arc-shaped gaskets are in contact with the outer wall of the tire body, a bottom plate is provided under the tire body, the bottom plate is fixedly connected to the rod wall of the rotating rod, the top of the bottom plate is in contact with the bottom of the tire body, a motor is fixedly mounted on the bottom of the base, and the output end of the motor is fixedly connected to the bottom end of the rotating rod.

Furthermore, a fixed tube is fixedly connected to the top of the rotating plate on one side close to the arc-shaped plastic scraper, a nozzle is fixedly installed on the side of the fixed tube close to the arc-shaped plastic scraper, and air holes are opened in the fixed tube and the rotating plate, and both ends of the air hole are respectively connected to the nozzle and the through hole.

Furthermore, a recycling box is fixedly connected to the top of the base, and the recycling box is arranged on the outside of the rotating rod, and a cylindrical barrel is rotatably mounted on the outer wall of the rotating rod, and a funnel is fixedly connected to the outer wall of the cylindrical barrel, and the funnel is located directly below the tire body, and the funnel is fixedly connected to the top of the recycling box, and a groove is provided on the rod wall of the rotating rod, and a push block is slidably mounted on the inner cavity wall of the groove, and a return spring is fixedly mounted between the push block and the inner cavity wall of the groove, and a ball is rollingly mounted on one end of the push block close to the cylindrical barrel, and a semicircular groove matched with the ball is provided on the inner wall of the cylindrical barrel, and the ball is in contact with the inner cavity of the semicircular groove.

Furthermore, a scraper is provided on the bottom wall of the funnel, and the scraper is fixedly connected to the rod wall of the rotating rod. A plurality of groups of leakage grooves are equidistantly provided between the funnel and the recycling box, and each group of the leakage grooves is connected to the funnel and the recycling box.

Furthermore, two groups of plug rods are fixedly connected to the top of the lower magnet ring, and plug holes matching the plug rods are provided at the bottom of the upper magnet ring.

Furthermore, in the initial state, when the two groups of the insertion rods are respectively inserted into the insertion holes, the output end of the nozzle will face the position of the arc-shaped gasket and the arc-shaped plastic scraper.

Furthermore, the initial state of the return spring is a compressed state.

A method for using a vehicle tire trimming device comprises the following steps:

S1: First, place the tire body on the bottom plate, and then inflate the inflation airbag to prop up the tire body and keep it in a normal state;

S2: Based on S1, the tire body is rotated by a rotating rod, and the shoulder of the tire body is trimmed by the cooperation of an arc-shaped gasket and an arc-shaped plastic scraper;

S3: Based on S2, while removing the burrs, the nozzle will blow the removed burrs into the funnel for collection;

S4: Based on S3, the rotating rod rotates and the funnel vibrates through the cooperation of the ball and the return spring, which can improve the fluidity of the burr;

S5: Based on S4, when the rotating rod rotates, the burrs that slide to the bottom wall of the inner cavity of the funnel through the scraper will be scraped off and recycled into the recycling box.

Compared with the prior art, the present invention has the following beneficial effects:

(1) This solution uses an air supply machine to discharge gas into the expansion airbag and increase the pressure in the expansion airbag, so that the expansion airbag expands and fills the inner cavity of the tire body, thereby supporting the tire body. This can keep the tire body in a normal shape and structure, avoid the situation where the surface of the tire body is dented or collapsed due to poor stability of the rubber after the tire body is produced, and avoid deformation, thereby effectively improving the quality of the tire and improving the puncture removal effect of the tire.

(2) This solution uses the arc-shaped gasket to squeeze the outer wall of the tire body so that the burrs are raised and cut off by the arc-shaped plastic scraper, thereby playing the role of trimming the tire body and effectively improving the efficiency and effect of trimming. The setting of the arc-shaped gasket can effectively avoid the situation where the surface of the tire body is easily scratched, thereby causing damage and cracks on the surface of the tire body, which can effectively increase the service life of the tire body and maintain the balance of the tire body, thereby effectively improving driving comfort and safety.

(3) This solution can use the nozzle to blow the burrs trimmed off the upper shoulder of the tire body by the upper arc-shaped plastic scraper away from the surface of the tire body, so that the burrs blown off the shoulder of the tire body can fall into the funnel. The lower arc-shaped plastic scraper can cut the burrs on the lower shoulder of the tire body and directly drop them into the funnel, playing the role of trimming and cleaning at the same time, and facilitating the collection of these burrs, avoiding the situation where manual cleaning is needed in the past, saving time and effort, and effectively improving work efficiency.

(4) In this scheme, the rotating rod can realize reciprocating impact of the balls on each group of semicircular grooves during the rotation process, thereby impacting the cylindrical tube and generating vibration. The shock waves on the cylindrical tube will be transmitted to the funnel, thereby improving the fluidity of the burrs on the inner wall of the funnel, making it easier for these burrs to quickly slide down to the bottom wall of the inner cavity of the funnel, effectively improving the collection efficiency, thereby effectively improving work efficiency.

(5) This solution uses a rotating rod to drive the scraper to make a circular motion on the bottom wall of the inner cavity of the funnel, so that the scraper can scrape the burrs that slide down the inner wall of the funnel into the drain groove and drop them into the recycling box, so that the trimmed burrs can be recycled, which can effectively save resources and avoid waste. By coordinating the vibration of the funnel and the scraper's scraping, the efficiency of burr recovery is effectively improved, thereby effectively improving work efficiency.

(6) This solution can reduce the friction generated by the rotating rod driving the push block to rotate and avoid wear through the setting of the ball, which can effectively increase the service life of components and save costs. By inserting the two sets of plug rods into the sockets respectively, the nozzle can be directly facing the arc gasket and the arc plastic scraper, so that it can quickly enter the working state and effectively save time.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a second schematic diagram of the overall structure of the present invention;

FIG3 is an enlarged structural view of section A in FIG1 of the present invention;

FIG4 is an overall cross-sectional view of the present invention;

FIG5 is an enlarged view of the structure of part B in FIG4 of the present invention;

FIG6 is an enlarged view of the structure of section C in FIG4 of the present invention;

FIG7 is an enlarged view of the structure of section D in FIG4 of the present invention;

FIG8 is a schematic flow chart of the method of the present invention.

Description of the numbers in the figure:

1. Base; 2. Round plate; 3. Rotating rod; 4. L-shaped plate; 5. Air supply machine; 6. Vertical pipe; 7. Rotating plate; 8. Telescopic straight pipe; 9. Magnet ring; 10. Sealing ring; 11. Through hole; 12. Cross hole; 13. Inflatable airbag; 14. Tire body; 15. Baffle; 16. Cylinder; 17. Arc gasket; 18. Arc plastic scraper; 19. Motor; 20. Bottom plate; 21. Insert rod; 22. Fixed pipe; 23. Vent; 24. Nozzle; 25. Cylinder; 26. Funnel; 27. Scraper; 28. Recovery box; 29. Leakage groove; 30. Slotting; 31. Reset spring; 32. Push block; 33. Ball; 34. Semicircular groove.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 7. A tire trimming device for automobiles includes a base 1, a rotating rod 3 is rotatably mounted on the top of the base 1, a circular plate 2 is fixedly connected to the top of the rotating rod 3, an inflatable airbag 13 is fixedly mounted on the side wall of the circular plate 2, a tire body 14 is sleeved on the outer wall of the inflatable airbag 13, and a supporting mechanism is also included. The supporting mechanism includes a rotating plate 7 rotatably mounted on the top of the circular plate 2, a telescopic straight tube 8 is fixedly mounted on the top of the rotating plate 7, an L-shaped plate 4 is fixedly mounted on one side of the top of the base 1, and an air supply machine 5 is fixedly mounted on the bottom of the L-shaped plate 4. A vertical pipe 6 is fixedly installed at the output end of the air supply machine 5, and magnet circles 9 are fixedly installed on the opposite sides of the vertical pipe 6 and the telescopic straight pipe 8. A sealing ring 10 is provided between the two groups of magnet circles 9, and the sealing ring 10 is fixedly installed on one of the groups of magnet circles 9. The two groups of magnet circles 9 are magnetically connected. A cross hole 12 is opened in the circular plate 2, and the cross hole 12 is communicated with the expansion airbag 13. A through hole 11 is opened on the rotating plate 7, and the through hole 11 is communicated with the telescopic straight pipe 8 and the cross hole 12 respectively. A valve is installed in the cross hole 12, and a trimming mechanism is provided on one side of the tire body 14.

The trimming mechanism includes a cylinder 16 fixedly mounted on the side wall of the L-shaped plate 4, the output end of the cylinder 16 is fixedly connected to a baffle 15, two groups of arc-shaped plastic scrapers 18 are fixedly mounted on the side of the baffle 15 close to the tire body 14, and the two groups of arc-shaped plastic scrapers 18 are fixedly mounted on the side close to the tire body 14. The arc-shaped gaskets 17 are in contact with the outer wall of the tire body 14, and a bottom plate 20 is arranged below the tire body 14. The bottom plate 20 is fixedly connected to the rod wall of the rotating rod 3, and the top of the bottom plate 20 is in contact with the bottom of the tire body 14. A motor 19 is fixedly mounted on the bottom of the base 1, and the output end of the motor 19 is fixedly connected to the bottom end of the rotating rod 3.

By adopting the above technical solution, first pull the telescopic straight tube 8 to contract and drive the lower magnet circle 9 to move downward, so that the two groups of magnet circles 9 are separated and moved away from each other. At this time, after the telescopic straight tube 8 is contracted, there will be a distance between the two groups of magnet circles 9, and the tire body 14 that needs to be trimmed of burrs can be placed from between the two groups of magnet circles 9 to the top of the bottom plate 20. The setting of the bottom plate 20 can facilitate the placement of the tire body 14. In the initial state, the inflatable airbag 13 is in an airless state. Then the inflatable airbag 13 is placed in the inner cavity of the tire body 14. After placement, the telescopic straight tube 8 is pulled again to extend and drive the lower magnet circle 9 to move upward, so that the two groups of magnet circles 9 are magnetically connected together. Through the setting of the sealing ring 10, it can be achieved that the vertical tube 6 plays a sealing role in the process of supplying air to the telescopic straight tube 8 through the two groups of magnet circles 9. Open ten The valve in the cross hole 12 opens the air supply machine 5, and the output end of the air supply machine 5 blows air through the vertical pipe 6. The gas in the vertical pipe 6 enters the telescopic straight tube 8 through the two groups of magnet rings 9 and the sealing ring 10. The gas in the telescopic straight tube 8 enters the cross hole 12 through the through hole 11, so that the gas in the cross hole 12 can enter the expansion airbag 13 and increase the pressure in the expansion airbag 13, so that the expansion airbag 13 expands and fills the inner cavity of the tire body 14, plays a role in supporting the tire body 14, and can keep the tire body 14 in a normal shape and structure, avoid the tire body 14 The surface of the tire body 14 is prevented from being dented or collapsed due to the poor stability of the rubber after the production of the tire body 14, and can avoid deformation, thereby effectively improving the quality of the tire and improving the puncture removal effect of the tire.

After the inflatable airbag 13 is inflated to support the inner cavity of the tire body 14, the valve in the cross hole 12 is closed to block the cross hole 12 to prevent the gas in the inflatable airbag 13 from leaking, and then the cylinder 16 is opened. The output end of the cylinder 16 will push the baffle 15 to move in the direction of the tire body 14. The movement of the baffle 15 will drive the arc-shaped plastic scraper 18 and the arc-shaped gasket 17 to move synchronously. When the arc-shaped gasket 17 contacts the shoulder position of the tire body 14, the arc surface end of the arc-shaped gasket 17 is pressed on the rubber surface of the outer wall of the tire body 14. Then the cylinder 16 is closed and the motor 19 is turned on. The output shaft of the motor 19 drives the rotating rod 3 to rotate. When the rotating rod 3 rotates, it drives the bottom plate 20 and the circular plate 2 to rotate synchronously. The rotation of the bottom plate 20 will lift the tire body 14 to rotate. The arc-shaped gasket 17 is squeezed and moved on the surface of the tire body 14. The arrangement of the arc surface end of the arc-shaped gasket 17 can avoid scratches on the surface of the tire body 14. When the burrs on the surface of the tire body 14 move to the position of the arc-shaped gasket 17 and the arc-shaped plastic scraper 18, the arc-shaped gasket 17 squeezes the outer wall of the tire body 14 so that the burrs are raised and cut off by the arc-shaped plastic scraper 18, thereby trimming the tire body 14 and effectively improving the efficiency and effect of trimming. The arrangement of the arc-shaped gasket 17 can effectively avoid scratching the surface of the tire body 14, thereby causing damage and cracks on the surface of the tire body 14, effectively improving the service life of the tire body 14, and maintaining the balance of the tire body 14, thereby effectively improving driving comfort and safety.

As shown in Figures 1, 2, 4 and 5, a fixed tube 22 is fixedly connected to the top of the rotating plate 7 on one side close to the arc-shaped plastic scraper 18, and a nozzle 24 is fixedly installed on the side of the fixed tube 22 close to the arc-shaped plastic scraper 18. Ventilation holes 23 are opened in the fixed tube 22 and the rotating plate 7, and both ends of the vent hole 23 are respectively connected to the nozzle 24 and the through hole 11.

By adopting the above technical solution, when the air is supplied to the vertical pipe 6 by the air supply machine 5, the gas in the vertical pipe 6 enters the telescopic straight pipe 8 through the two sets of magnet rings 9, and the gas in the telescopic straight pipe 8 enters the through hole 11. Since the valve in the cross hole 12 is closed, the gas in the through hole 11 enters the nozzle 24 through the vent 23 and is discharged through the nozzle 24. Since the rotating plate 7 is rotatably connected to the circular plate 2, the rotating plate 7 does not move during the rotation of the circular plate 2. At this time, the output end of the nozzle 24 can be blown toward the position of the upper arc gasket 17 and the arc plastic scraper 18 to achieve the upper arc plastic scraper. The burrs trimmed off the upper shoulder of the tire body 14 are blown away from the surface of the tire body 14 by the nozzle 24. The burrs on the upper shoulder of the tire body 14 are blown onto the right side wall of the baffle 15 by the nozzle 24. The baffle 15 is set to block the burrs, which can facilitate the burrs blown out from the shoulder of the tire body 14 to fall into the funnel 26. The lower arc-shaped plastic scraper 18 cuts the burrs on the lower shoulder of the tire body 14 and directly falls into the funnel 26, which plays the role of trimming and cleaning at the same time, and is convenient for collecting these burrs, which can avoid the situation where manual cleaning is needed in the past, saves time and effort, and can effectively improve the work effect.

As shown in Figures 4 and 7, a recycling box 28 is fixedly connected to the top of the base 1, and the recycling box 28 is arranged on the outside of the rotating rod 3. A cylindrical barrel 25 is rotatably installed on the outer wall of the rotating rod 3, and a funnel 26 is fixedly connected to the outer wall of the cylindrical barrel 25. The funnel 26 is located directly below the tire body 14, and the funnel 26 is fixedly connected to the top of the recycling box 28. A groove 30 is opened on the rod wall of the rotating rod 3, and a push block 32 is slidably installed on the inner cavity wall of the groove 30. A reset spring 31 is fixedly installed between the push block 32 and the inner cavity wall of the groove 30. A ball 33 is rollingly installed on one end of the push block 32 close to the cylindrical barrel 25, and a semicircular groove 34 adapted to the ball 33 is opened on the inner wall of the cylindrical barrel 25, and the ball 33 contacts the inner cavity of the semicircular groove 34.

By adopting the above technical solution, when the output end of the motor 19 drives the rotating rod 3 to rotate, the rotating rod 3 drives the ball 33 to move synchronously through the push block 32, and the rotating rod 3 rotates on the inner wall of the cylindrical tube 25. When the ball 33 moves out of the semicircular groove 34, it pushes the push block 32 to slide in the inner cavity of the slot 30 and squeezes the reset spring 31. When the ball 33 moves to the next set of semicircular grooves 34, under the action of the reset spring 31, the reset spring 31 restores the initial state and pushes the push block 32 to the initial position, so that the push block 32 can drive the ball 33 to move into the inner cavity of the semicircular groove 34 and The rotating rod 3 can be used to impact the semicircular grooves 34 by reciprocating during the rotation of the semicircular grooves 34, thereby impacting the cylindrical tube 25 and generating vibrations. The shock waves on the cylindrical tube 25 will be transmitted to the funnel 26, thereby improving the fluidity of the burrs on the inner wall of the funnel 26, and facilitating the burrs to quickly slide onto the bottom wall of the inner cavity of the funnel 26, thereby effectively improving the collection efficiency and thus effectively improving the work efficiency. The setting of the ball 33 can reduce the friction generated during its rotation, avoid wear, effectively improve the service life of components, and save costs.

As shown in Figures 1, 4 and 7, a scraper 27 is provided on the bottom wall of the funnel 26, and the scraper 27 is fixedly connected to the rod wall of the rotating rod 3. A plurality of groups of leakage grooves 29 are equidistantly provided between the funnel 26 and the recovery box 28, and each group of leakage grooves 29 is connected to the funnel 26 and the recovery box 28.

By adopting the above technical solution, when the output end of the motor 19 drives the rotating rod 3 to rotate, the rotation of the rotating rod 3 will drive the scraper 27 to move synchronously. The scraper 27 makes a circular motion on the bottom wall of the inner cavity of the funnel 26, so that the scraper 27 can scrape the burrs that slide down the inner wall of the funnel 26 into the leakage groove 29 and drop them into the recycling box 28, so that the trimmed burrs can be recycled, effectively saving resources and avoiding waste. By coordinating the vibration of the funnel 26 and the scraping of the scraper 27, the efficiency of burr recovery can be effectively improved, thereby effectively improving work efficiency.

As shown in FIG. 1 and FIG. 6 , two groups of plug rods 21 are fixedly connected to the top of the lower magnet ring 9 , and plug holes matching the plug rods 21 are provided at the bottom of the upper magnet ring 9 .

In the initial state, when the two groups of insertion rods 21 are respectively inserted into the insertion holes, the output end of the nozzle 24 will face the position of the arc-shaped gasket 17 and the arc-shaped plastic scraper 18.

By adopting the above technical scheme, through the cooperation of two groups of plug rods 21 and two groups of sockets, the two groups of magnet rings 9 are magnetically connected together, and the rotating plate 7 is fixed by the telescopic straight tube 8, so that the rotating plate 7 can rotate on the circular plate 2 without being affected. When the two groups of plug rods 21 are respectively inserted into the sockets in the initial state, the output end of the nozzle 24 will face the position of the arc-shaped gasket 17 and the arc-shaped plastic scraper 18, avoiding the situation that the rotating plate 7 is prone to deviation due to the rotation connection on the circular plate 2, reducing the trouble of adjusting the position, and making the nozzle 24 directly face the arc-shaped gasket 17 and the arc-shaped plastic scraper 18, so as to achieve rapid entry into the working state, which can effectively save time.

As shown in FIG. 3 and FIG. 7 , the initial state of the return spring 31 is a compressed state.

By adopting the above technical solution, the return spring 31 is in a compressed state in the initial state, so that the ball 33 can be tightly attached to the inner wall of the cylindrical tube 25, thereby effectively improving the impact effect of the ball 33.

A method for using a vehicle tire trimming device, as shown in FIG8 , comprises the following steps:

S1: First, place the tire body 14 on the bottom plate 20, and then inflate the inflation airbag 13 to prop up the tire body 14 and keep it in a normal state;

S2: Based on S1, the tire body 14 is rotated by rotating the rod 3, and the shoulder of the tire body 14 is trimmed by the cooperation of the arc-shaped gasket 17 and the arc-shaped plastic scraper 18;

S3: Based on S2, while removing the burrs, the nozzle 24 will blow the removed burrs into the funnel 26 for collection;

S4: Based on S3, when the rotating rod 3 rotates, the funnel 26 will vibrate through the cooperation of the ball 33 and the return spring 31, which can improve the fluidity of the burr;

S5: On the basis of S4, the rotating rod 3 rotates and the burrs that slide down to the bottom wall of the inner cavity of the funnel 26 through the scraper 27 are scraped into the recovery box 28 for recovery.

The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (9)

1. A tire trimming device for automobiles, comprising a base (1), the top of the base (1) being rotatably connected to a rotating rod (3), the top of the rotating rod (3) being fixedly connected to a circular plate (2), an inflatable airbag (13) being fixedly mounted on the side wall of the circular plate (2), a tire body (14) being sleeved on the outer wall of the inflatable airbag (13), and characterized in that it also comprises a supporting mechanism, the supporting mechanism comprising a rotating plate (7) rotatably mounted on the top of the circular plate (2), a telescopic straight tube (8) being fixedly mounted on the top of the rotating plate (7), an L-shaped plate (4) being fixedly mounted on one side of the top of the base (1), an air supply machine (5) being fixedly mounted on the bottom of the L-shaped plate (4), and an output of the air supply machine (5) A vertical tube (6) is fixedly installed at the end, and magnet rings (9) are fixedly installed on the opposite sides of the vertical tube (6) and the telescopic straight tube (8). A sealing ring (10) is provided between the two groups of the magnet rings (9), and the sealing ring (10) is fixedly installed on one group of the magnet rings (9). The two groups of the magnet rings (9) are magnetically connected. A cross hole (12) is provided in the circular plate (2), and the cross hole (12) is communicated with the expansion airbag (13). A through hole (11) is provided on the rotating plate (7), and the through hole (11) is communicated with the telescopic straight tube (8) and the cross hole (12) respectively. A valve is installed in the cross hole (12), and a trimming mechanism is provided on one side of the tire body (14). 2. A tire trimming device for automobiles as claimed in claim 1, characterized in that the trimming mechanism comprises a cylinder (16) fixedly mounted on the side wall of the L-shaped plate (4), the output end of the cylinder (16) is fixedly connected to a baffle (15), two groups of arc-shaped plastic scrapers (18) are fixedly mounted on the side of the baffle (15) close to the tire body (14), and arc-shaped gaskets (17) are fixedly mounted on the side of the two groups of arc-shaped plastic scrapers (18) close to the tire body (14), and the arc-shaped gaskets (17) are in contact with the outer wall of the tire body (14), a bottom plate (20) is arranged below the tire body (14), the bottom plate (20) is fixedly connected to the rod wall of the rotating rod (3), and the top of the bottom plate (20) is in contact with the bottom of the tire body (14), and a motor (19) is fixedly mounted on the bottom of the base (1), and the output end of the motor (19) is fixedly connected to the bottom end of the rotating rod (3). 3. A tire trimming device for automobiles as claimed in claim 2, characterized in that a fixing tube (22) is fixedly connected to a side of the top of the rotating plate (7) close to the arc-shaped plastic scraper (18), a nozzle (24) is fixedly installed on a side of the fixing tube (22) close to the arc-shaped plastic scraper (18), and a vent hole (23) is opened in the fixing tube (22) and the rotating plate (7), and two ends of the vent hole (23) are respectively connected to the nozzle (24) and the through hole (11). 4. A tire trimming device for automobiles as claimed in claim 3, characterized in that a recycling box (28) is fixedly connected to the top of the base (1), the recycling box (28) is arranged on the outside of the rotating rod (3), a cylindrical tube (25) is rotatably mounted on the outer wall of the rotating rod (3), a funnel (26) is fixedly connected to the outer wall of the cylindrical tube (25), the funnel (26) is located directly below the tire body (14), the funnel (26) is fixedly connected to the top of the recycling box (28), and the A groove (30) is formed on the rod wall of the rotating rod (3), a push block (32) is slidably mounted on the inner wall of the groove (30), a return spring (31) is fixedly mounted between the push block (32) and the inner wall of the groove (30), a ball (33) is rollably mounted on one end of the push block (32) close to the cylindrical tube (25), a semicircular groove (34) matched with the ball (33) is formed on the inner wall of the cylindrical tube (25), and the ball (33) is in contact with the inner cavity of the semicircular groove (34). 5. A tire trimming device for automobiles as claimed in claim 4, characterized in that a scraper (27) is provided on the bottom wall of the funnel (26), the scraper (27) is fixedly connected to the rod wall of the rotating rod (3), and a plurality of groups of drain grooves (29) are equidistantly provided between the funnel (26) and the recycling box (28), and each group of the drain grooves (29) is connected to the funnel (26) and the recycling box (28). 6. A tire trimming device for automobiles as claimed in claim 3, characterized in that two groups of insertion rods (21) are fixedly connected to the top of the lower magnet ring (9), and a plug hole matching the insertion rod (21) is provided at the bottom of the upper magnet ring (9). 7. A tire trimming device for automobiles as claimed in claim 6, characterized in that, in the initial state, when the two groups of the insertion rods (21) are respectively inserted into the insertion holes, the output end of the nozzle (24) will face the position of the arc-shaped gasket (17) and the arc-shaped plastic scraper (18). 8. The automobile tire trimming device according to claim 4, characterized in that the initial state of the return spring (31) is a compressed state. 9. A method for using the automobile tire trimming device according to claim 5, characterized in that it comprises the following steps: S1: firstly placing the tire body (14) on the bottom plate (20), and then inflating the inflation airbag (13) to prop up the tire body (14) and maintain a normal state; S2: Based on S1, the tire body (14) is rotated by rotating the rod (3), and the shoulder of the tire body (14) is trimmed by cooperating with the arc-shaped gasket (17) and the arc-shaped plastic scraper (18); S3: Based on S2, while removing the burrs, the nozzle (24) will blow the removed burrs into the funnel (26) for collection; S4: Based on S3, when the rotating rod (3) rotates, the funnel (26) vibrates through the cooperation of the ball (33) and the return spring (31), thereby improving the fluidity of the burr; S5: Based on S4, the rotating rod (3) rotates and the burrs that slide down to the bottom wall of the inner cavity of the funnel (26) due to vibration are scraped off by the scraper (27) and are recycled into the recycling box (28).