A car wheel polishing machine

Abstract

This invention discloses an automotive wheel polishing machine, comprising a first polishing cloth wheel and a second polishing cloth wheel. The first polishing cloth wheel and the second polishing cloth wheel rotate around their own center line of symmetry. The first polishing cloth wheel and the second polishing cloth wheel are adapted to approach each other and allow the cloth strips on the circumferential edge of the first polishing cloth wheel and the cloth strips on the circumferential edge of the second polishing cloth wheel to collide and rub against each other. The heat generated by the contact and friction between the pair of polishing cloth wheels causes the residual polishing liquid droplets on the cloth strips on the circumferential edge of each polishing cloth wheel and in the gaps between the cloth strips to evaporate. The contact and collision between the polishing cloth wheels shake off the residual polishing abrasive on the cloth strips on the circumferential edge of each polishing cloth wheel and in the gaps between the cloth strips, thereby preventing the abrasive remaining on the polishing cloth wheels from mixing into the next polishing process.

Description

Technical Field

[0001] This invention relates to a polishing machine, and more particularly to an automotive wheel hub polishing machine. Background Technology

[0002] In existing automotive wheel polishing machines, polishing wheels are typically mounted on a robot's robotic arm. The arm's orientation is adjusted to ensure the polishing wheels contact different parts of the wheel hub for polishing. This arrangement is simple in structure, allows for flexible wheel posture changes, and offers high automation. However, wheel polishing requires multiple polishing cycles using abrasives of varying diameters to achieve the desired effect. Therefore, multiple robots are needed on the production line, each with a polishing wheel mounted on its robotic arm and using different abrasive polishing fluids to sequentially complete different polishing processes on the wheel hub. The use of separate polishing fluids for different abrasives is necessary to prevent mixing between polishing fluids from previous and subsequent processes, which could affect the polishing results. However, once the polishing wheel becomes contaminated with abrasive, it is difficult to clean it quickly without special methods. Therefore, to save time and ensure polishing effectiveness, existing technologies use a fixed polishing fluid for each polishing wheel, eliminating the need to clean the wheel of residual abrasive from the previous process to prepare it for use with the next process's polishing fluid. Summary of the Invention

[0003] This invention provides an automotive wheel polishing machine that can clean the abrasive residue on the polishing cloth wheel after each polishing process, enabling multiple polishing processes to be completed without the need for an assembly line.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] This invention discloses an automotive wheel polishing machine, including a first polishing cloth wheel and a second polishing cloth wheel. The first polishing cloth wheel and the second polishing cloth wheel rotate around their own center line of symmetry. The first polishing cloth wheel and the second polishing cloth wheel are adapted to approach each other and make the cloth strips on the circumferential edge of the first polishing cloth wheel and the cloth strips on the circumferential edge of the second polishing cloth wheel collide and rub against each other.

[0006] Polishing cloth wheel one is mounted on the bushing, polishing cloth wheel two is mounted on the vertical rod, the bushing is fitted and rotatably fitted on the vertical rod, and when the bushing rotates relative to the vertical rod, polishing cloth wheel one and polishing cloth wheel two are adapted to approach each other; a toothed ring is provided on the outer side wall of one end of the bushing along the circumference, the toothed ring meshes with a gear on one side, the gear is located at the rotor end of the drive motor on one side, and the drive motor is fixedly mounted on the vertical rod.

[0007] The polishing cloth wheel is connected to the rotor of the polishing motor on one side. The polishing motor is located at the outer end of the outer piston rod of the outer drive cylinder. The cylinder tail end of the outer drive cylinder is hinged to the bushing, and its open end is hinged to the outer end of the outer piston rod of the outer drive cylinder. The cylinder tail end of the outer drive cylinder is hinged to the bushing.

[0008] The polishing cloth wheel 2 is connected to the rotor of the polishing motor 2 on one side. The polishing motor 2 is located at the outer end of the inner piston rod 1 of the inner drive cylinder 1. The tail end of the cylinder of the inner drive cylinder 1 is hinged to the vertical rod, and its open end is hinged to the outer end of the inner piston rod 2 of the inner drive cylinder 2. The tail end of the cylinder of the inner drive cylinder 2 is hinged to the vertical rod.

[0009] The plumb rod has a channel connecting its top and bottom ends. The top end of the plumb rod has a main pipe. One end of the main pipe is sealed to the upper end of the channel, and the other end of the main pipe is sealed to the lower ends of multiple discharge pipes. The upper end of each discharge pipe is sealed to a storage tank for storing polishing liquid. Each discharge pipe is equipped with a discharge valve. The bottom end of the plumb rod has a nozzle with multiple spray holes that are sealed to the channel.

[0010] The other end of the main pipe is also sealed to a gas storage tank for storing compressed gas, and a venting valve is provided on the main pipe located between the gas storage tank and each drain pipe.

[0011] The lower side of the vertical rod is provided with a turntable for placing the wheel hub on top. The top of the turntable is provided with multiple clamping devices along the circumferential direction to keep the wheel hub and the turntable on the same symmetrical center line. The turntable can rotate around its own symmetrical center line and slide on the base below it. The base is adapted to move back and forth in the vertical direction.

[0012] The plumb line is fixed to the column, which is fixed to the ground or adapted to move radially along the hub.

[0013] A method for using an automotive wheel polishing machine includes the following steps:

[0014] a. Clamp the wheel hub in the center of the turntable;

[0015] b. Open the drain valve next to the selected storage tank. The hub rotates around its own center line of symmetry and moves back and forth along the vertical direction within a certain height range. After a set time, close the drain valve and the hub stops moving.

[0016] c. The hub rotates around its own symmetrical center line. Under the action of each drive cylinder, polishing cloth wheel one and / or polishing cloth wheel two abut against the surface of the hub. Each polishing motor starts, and polishing cloth wheel one and / or polishing cloth wheel two rotate at a set speed and direction. The height of the hub is adjusted within the set range.

[0017] d. Under the action of each drive cylinder, polishing cloth wheel one and polishing cloth wheel two are separated from the surface of the hub. The drive motor drives the shaft sleeve to rotate relative to the vertical rod. Polishing cloth wheel one and polishing cloth wheel two are suitable to approach each other and rotate. Cloth strip one and cloth strip two collide and rub against each other.

[0018] e. If any polishing process is not completed, return to step b; if all polishing processes are completed, the process ends.

[0019] Insert step h between step d and step e:

[0020] h. Open the vent valve, and the wheel hub rotates around its own symmetrical center line. The height of the wheel hub is adjusted back and forth within the set range. After a set time, close the vent valve and the wheel hub stops moving.

[0021] In step b, the liquid discharge valve and the vent valve open and close synchronously.

[0022] The technical effects of this invention include:

[0023] (1) The car wheel polishing machine of the present invention utilizes the heat generated by the contact and friction between a pair of polishing cloth wheels to evaporate the residual polishing liquid droplets on the cloth strips on the circumferential edge of each polishing cloth wheel and in the gaps between the cloth strips. The contact and collision between the polishing cloth wheels shake off the residual polishing abrasive on the cloth strips on the circumferential edge of each polishing cloth wheel and in the gaps between the cloth strips, thereby preventing the abrasive remaining on the polishing cloth wheel from being mixed into the next polishing process.

[0024] (2) By utilizing the relative rotational motion between the bushing and the vertical rod, and through the transmission relationship between the drive motor, the gear ring and the gear, a pair of polishing cloth wheels can be brought close together, contacted, collided and rubbed.

[0025] (3) The spatial position of polishing cloth wheel one is adjusted by using external drive cylinder one and external drive cylinder two, the rotation direction and speed of polishing cloth wheel one are controlled by polishing motor one, the spatial position of polishing cloth wheel two is adjusted by using internal drive cylinder one and internal drive cylinder two, and the rotation direction and speed of polishing cloth wheel two are controlled by polishing motor two. The distance between each polishing cloth wheel and the hub can be flexibly adjusted to adapt to hubs of various sizes and specifications. At the same time, the adjustable direction and speed of the motor can be matched with polishing liquid containing various abrasives, which is suitable for various polishing process requirements.

[0026] (4) By using the channels to guide the various polishing liquids in the storage tank to the nozzles and spray them out from each nozzle, it is beneficial to spray various polishing liquids onto the surface of the wheel hub quickly and evenly.

[0027] (5) The compressed gas in the gas tank is used to clean the polishing fluid and abrasive residue in the main pipe, channels and nozzles, and also to blow and clean the polishing fluid and abrasive residue on the wheel hub surface, saving the need for external compressed gas spray guns and other cleaning tools. At the same time, the compressed gas in the gas tank and the polishing fluid in the liquid tank are sprayed out through the main pipe, channels and nozzles, which promotes the atomization of the polishing fluid and makes the droplet diameter of the polishing fluid sprayed from the nozzle smaller, thereby further improving the uniformity of the polishing fluid spray on the wheel hub surface.

[0028] (6) Use the clamping device to make the hub and the turntable rotate coaxially. If the turntable and the vertical bar are also on the same symmetrical center line, the surface of the hub, especially its inner surface, can fully fit with each polishing cloth wheel. The lifting function of the base makes it easy to adjust the distance between the hub and the polishing cloth wheel, and also makes it easy to load and unload the hub on the turntable.

[0029] (7) Compared with the column being fixed on the ground, the column moves radially along the hub, which improves the flexibility of adjusting the distance between the polishing cloth wheel and the hub. This facilitates the polishing of the inner surface of the hub and also enables the polishing cloth wheel to polish the outer surface of the hub (including the outer side of the hub) and the spoke surface.

[0030] (8) The working method of the automobile wheel polishing machine of the present invention enables different types of polishing liquid in each storage tank to be sprayed onto the surface of the wheel hub in a certain order. With the contact and friction between the circumferential edges of polishing cloth wheel one and polishing cloth wheel two, the residual polishing liquid and abrasive on each polishing cloth wheel are cleaned, preventing them from being mixed into the next polishing process. The column moves radially along the wheel hub. If the plumb rod and the turntable are on the same symmetrical center line, polishing cloth wheel one and polishing cloth wheel two work simultaneously. If the plumb rod is not on the same symmetrical center line as the turntable, or even if the plumb rod is located on the outside of the wheel hub, one of the polishing cloth wheels can work to polish the wheel hub, such as polishing the outer wall of the wheel hub.

[0031] (9) The release valve is used to control the release of compressed gas in the gas tank, which can clean the main pipe, channels, and nozzles, as well as the surface of the wheel hub. This prevents the polishing liquid and abrasive residue in the main pipe, channels, nozzles, and wheel hub from mixing into the next polishing process, thereby further improving the polishing effect. At the same time, the integrated structure of the gas tank, release valve, main pipe, channels, and nozzles saves the need for external compressed gas spray guns and other special cleaning tools.

[0032] (10) The compressed gas in the gas storage tank and the polishing liquid in the liquid storage tank are sprayed out synchronously through the main pipe, channel and nozzle, which helps to promote the atomization of the polishing liquid and improve the uniformity of the polishing liquid spray on the wheel hub surface. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is an overall structural diagram of the automotive wheel polishing machine of the present invention;

[0035] Figure 2 This is a side three-dimensional view of the automotive wheel polishing machine of the present invention;

[0036] Figure 3 This is a three-dimensional bottom view of the automotive wheel polishing machine of the present invention;

[0037] Figure 4 This is a top three-dimensional view of the automotive wheel polishing machine of the present invention;

[0038] Figure 5 This is a three-dimensional view of the plumb line of the automotive wheel polishing machine of the present invention;

[0039] Figure 6 This is the present invention. Figure 3 Enlarged view of point A in the middle;

[0040] Figure 7 This is the present invention. Figure 4 Enlarged view of point B in the middle;

[0041] Figure 8 This is a cross-sectional view of the automotive wheel polishing machine of the present invention;

[0042] Figure 9 This is the present invention. Figure 8 Enlarged view of point C in the middle;

[0043] Figure 10 This is a schematic diagram of the friction state of the polishing cloth wheel in the automotive wheel polishing machine of the present invention.

[0044] In the diagram: 1. Lifting cylinder; 2. Base; 3. Turntable; 4. Connecting column; 5. Clamping cylinder; 6. Clamping block; 61. Clamping plate; 62. Rubber pad; 7. Column; 8. Crossbeam; 9. Self-rotating motor; 10. Connecting column one; 11. Rotor; 12. Perforation; 13. Support plate; 14. Vertical rod; 15. Liquid storage tank; 16. Drain valve; 17. Drain pipe; 18. Gas storage tank; 19. Gas release valve; 20. Main pipe; 21. Bushing; 22. Convex ring; 23. Ring groove; 24. Gear ring; 25. Gear; 26. Drive motor; 27. Connecting column two; 28. External hinge one; 29. External hinge 2; 30. Hinge rod; 31. External drive cylinder 1; 32. External piston rod 1; 33. External drive cylinder 2; 331. External piston rod 2; 34. Pin 1; 35. Polishing motor 1; 36. Polishing cloth wheel 1; 37. Cloth strip 1; 38. Polishing cloth wheel 2; 39. Cloth strip 2; 40. Polishing motor 2; 41. Internal piston rod 1; 42. Internal drive cylinder 1; 43. Pin 2; 44. Internal drive cylinder 2; 441. Internal piston rod 2; 45. Internal hinge 1; 46. Internal hinge 2; 47. Nozzle; 48. Spray hole; 49. Channel; 50. Hub. Detailed Implementation

[0045] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0046] like Figure 1-10 As shown, the automotive wheel polishing machine of the present invention includes multiple lifting cylinders 1 located on the ground. The piston rods of each lifting cylinder 1 face upwards, and the free ends of each piston rod are respectively connected to the bottom wall of a disc-shaped base 2, and are adapted to synchronously drive the base 2 to maintain a horizontal state for lifting and lowering. A circular horizontal groove is provided in the center of the top wall of the base 2, and a turntable 3 is rotatably fitted in the groove. A through hole 12 is provided in the center of the groove, and a self-rotating motor 9 is connected to the bottom wall of the base 2 through multiple connecting posts 10 on its top. The free end of the rotor 11 of the self-rotating motor 9 passes through the through hole 12 and is connected to the bottom wall of the turntable 3. The rotor 11, the through hole 12, and the turntable 3 share a common symmetrical center line.

[0047] The turntable 3 has multiple connecting posts 4 evenly distributed along its circumferential edge. Each connecting post 4 is equipped with a clamping cylinder 5, and the free end of the piston rod of each clamping cylinder 5 is equipped with a clamping block 6. The clamping block 6 includes a clamping plate 61 and a rubber pad 62. The clamping plate 61 is connected to the piston rod, and the rubber pad 62 is made of rubber and is fixed to the clamping plate 61. The center of the top wall of the turntable 3 is suitable for placing a wheel hub 50 with its spokes facing downwards. When the piston rod of the clamping cylinder 5 extends, it is suitable for driving the corresponding rubber pad 62 to move radially along the wheel hub 50 and clamping the circumferential side wall of the wheel hub 50. The deformability of the rubber pad 62 allows it to adapt to wheel hubs 50 of various diameters. When the wheel hub 50 is clamped, the wheel hub 50 and the turntable 3 share a common center line of symmetry.

[0048] One side of the base 2 is provided with a column 7 standing on the ground. The top of the column 7 is connected to one end of a horizontal beam 8, and the other end of the beam 8 is connected to a support plate 13. The support plate 13 has a through hole, and the top of a cylindrical plumb rod 14 is fixed in the through hole, with its top surface flush with the top surface of the support plate 13. Figure 9 As shown, the plumb rod 14 has a channel 49 at its center along the axial direction, connecting the top and bottom ends of the plumb rod 14. The top end of the plumb rod 14 has a main pipe 20 that is sealed and connected to the channel 49. The main pipe 20, the channel 49, and the plumb rod 14 share a common centerline. A gas storage tank 18 for storing compressed gas is sealed to the top end of the main pipe 20. A vent valve 19 is also provided on the main pipe 20 below the gas storage tank 18. Three independent drain pipes 17 are sealed to the main pipe 20 between the vent valve 19 and the lower end of the main pipe 20. Each drain pipe 17 is angled, with its lower end connected to the main pipe 20. The upper end of each drain pipe 17 is connected to a storage tank 15 suitable for storing polishing fluid. A drain valve 16 is provided on the drain pipe 17 below each storage tank 15.

[0049] The bottom end of the vertical rod 14 is sealed with a hemispherical nozzle 47. The nozzle 47 contains multiple nozzle holes 48, the inner end of each nozzle hole 48 communicating with the lower end of the channel 49, and the outer end of each nozzle hole 48 communicating with the outside. Preferably, the nozzle holes 48 are evenly distributed both circumferentially and radially along the nozzle 47, forming a multi-layered structure. The outlet direction of the nozzle holes 48 can be horizontal, vertical, or an inclined direction between horizontal and vertical.

[0050] like Figure 9 As shown, a circular convex ring 22 is provided on the outer wall of the middle part of the plumb rod 14. A bushing 21 is fitted on the outer wall of the middle part of the plumb rod 14. An annular groove 23 is provided on the inner wall of the bushing 21. The annular groove 23 is rotatably and slidably engaged with the convex ring 22, so that the bushing 21 can rotate relative to the plumb rod 14 and will not fall off the plumb rod 14. Figure 5As shown, a gear ring 24 is provided on the upper side wall of the bushing 21 along the circumferential direction. The gear ring 24 meshes with a gear 25 on one side. The gear 25 is coaxially connected to the rotor of the drive motor 26 on one side. The drive motor 26 is fixedly mounted on the outer side wall of the vertical rod 14 through a connecting column 27.

[0051] The outer wall of the bushing 21 is provided with an outer hinge 28 and an outer hinge 29 along the axial direction. The tail end of the cylinder of the outer drive cylinder 33 is hinged to the bushing 21 through the outer hinge 28. The tail end of the cylinder of the outer drive cylinder 31 is provided with a hinge rod 30, which is hinged to the bushing 21 through the outer hinge 29. The free end of the outer piston rod 331 of the outer drive cylinder 33 is provided with a horizontal pin hole. A pin 34 is fixedly provided on the outer wall of the cylinder of the outer drive cylinder 31 near the opening end. A hinge mechanism is formed by the engagement of pin 34 and pin hole. A horizontal through hole is provided at the free end of the outer piston rod 32 of the outer drive cylinder 31. A polishing motor 35 is fixed to one side of the outer piston rod 32. The rotor of the polishing motor 35 is rotatably engaged in the through hole, with its end passing through the through hole and located on the other side of the outer piston rod 32. A polishing cloth wheel 36 is coaxially connected to the end of the rotor. The polishing cloth wheel 36 is composed of cloth with circumferentially extending strips 37. When the outer drive cylinder 31 and the second outer drive cylinder 33 are working, the polishing cloth wheel 36 is adapted to rotate around the second outer hinge 29 and move axially along the outer drive cylinder 31. The polishing cloth wheel 36 is adapted to rotate under the drive of the polishing motor 35. When the bushing 21 is not rotating, the rotation and movement trajectories of the polishing cloth wheel 36 are all within the same vertical plane.

[0052] like Figure 6As shown, an inner hinge 45 is provided on the outer wall of the vertical rod 14 located on the upper side of the bushing 21, and an inner hinge 46 is provided on the outer wall of the vertical rod 14 located on the lower side of the bushing 21. The inner hinge 45 and the inner hinge 46 are arranged along the axial direction of the vertical rod 14. The tail end of the cylinder of the inner drive cylinder 42 is hinged to the outer wall of the vertical rod 14 through the inner hinge 46, and the tail end of the cylinder of the inner drive cylinder 44 is hinged to the outer wall of the vertical rod 14 through the inner hinge 45. The free end of the inner piston rod 441 of the inner drive cylinder 44 is provided with a horizontal pin hole. A pin 43 is fixedly provided on the outer wall of the cylinder barrel of the inner drive cylinder 42 near the opening end. The pin 43 and the pin hole form a hinge mechanism. The free end of the inner piston rod 41 of the inner drive cylinder 42 is provided with a horizontal through hole. The rotor of the polishing motor 40 is rotatably fitted into this through hole, with its end passing through the through hole and located on the other side of the inner piston rod 41. A polishing cloth wheel 38 is coaxially connected to the end of the rotor. The polishing cloth wheel 38 is composed of cloth, with circumferentially extending strips 39. When the inner drive cylinders 42 and 44 are working, the polishing cloth wheel 38 is adapted to rotate around the inner hinge 46 and move axially along the inner drive cylinder 42. The polishing cloth wheel 38 is adapted to rotate under the drive of the polishing motor 40. The trajectories of the rotation and movement of the polishing cloth wheel 38 are all within the same vertical plane.

[0053] As a preferred embodiment, the three storage tanks 15 respectively store three types of polishing liquid containing abrasives of different diameters. The polishing liquid with the largest abrasive diameter is used in the first polishing process, which is a coarse polishing process, to remove burrs and scratches from the surface of the wheel hub. The polishing liquid with a medium abrasive diameter is used in the second polishing process, which is a medium polishing process, to polish the surface of the wheel hub to make it glossy. The polishing liquid with the smallest abrasive diameter is used in the third polishing process, which is a fine polishing process, to polish the surface of the wheel hub to make it have a mirror-like reflective effect.

[0054] The working steps of the automotive wheel polishing machine of the present invention are as follows:

[0055] (a) Each lifting cylinder 1 operates and retracts, lowering the height of the base 2, placing the hub 50 in the center of the turntable 3 with the spokes facing down. Each clamping cylinder 5 operates and extends, so that each clamping block 6 clamps the hub 50 and makes the hub 50 and the turntable 3 symmetrical about the center line.

[0056] (b) Open the drain valve 16 next to the selected storage tank 15. The polishing liquid in the storage tank 15 is sprayed onto the inner surface of the hub 50 through the corresponding drain valve 16, drain pipe 17, main pipe 20, channel 49 and each spray hole 48. At the same time, each lifting cylinder 1 works and reciprocates within a set range to adjust the height of the base 2. The self-rotating motor 9 works and drives the turntable 3 to rotate relative to the base 2, so that the hub 50 moves both vertically and rotates relative to the nozzle 47, so that the polishing liquid sprayed from the spray hole 48 can evenly coat the inner surface of the hub 50. As a preferred option, the vent valve 19 is opened at this time. The compressed gas in the gas storage tank 18 passes through the vent valve 19 and mixes with the polishing liquid in the main pipe 20, and then is sprayed out through the channel 49 and each spray hole 48. Under the action of the compressed gas, the spray pressure at each spray hole 48 increases, so that the sprayed polishing liquid is fully atomized, further improving the uniformity of the polishing liquid distribution on the inner surface of the hub 50.

[0057] (c) Each lifting cylinder 1 retracts, lowering the height of the base 2. External drive cylinders 31, 33, 42, and 44 operate, adjusting the spatial positions of polishing cloth wheels 36 and 38 respectively. Each lifting cylinder 1 extends, raising the height of the base 2, causing cloth strips 37 and 39 to contact designated areas on the inner surface of the hub. Polishing motors 35 and 40 drive each polishing cloth wheel to rotate. Simultaneously, the self-rotating motor 9 operates, driving the hub 50 to rotate clockwise or counterclockwise. As each polishing cloth wheel rotates, the cloth strips on their edges increase in hardness under centrifugal force, thus pressing against the hub surface and generating friction. Polishing is achieved under the action of the abrasive in the polishing fluid. During this process, by continuously adjusting the spatial positions of polishing cloth wheels 36 and 38 and the height of the base 2, the entire inner surface of the hub 50 can be polished.

[0058] (d) Each lifting cylinder 1 retracts, lowering the height of the base 2. The drive motor 26 operates and drives the bushing 21 to rotate relative to the vertical rod 14 via gears 25 and gear ring 24. Simultaneously, the outer drive cylinder 1 31, outer drive cylinder 2 33, inner drive cylinder 1 42, and inner drive cylinder 2 44 operate, respectively adjusting the spatial position of polishing cloth wheel 1 36 and polishing cloth wheel 2 38, ultimately bringing the circumferential edges of polishing cloth wheel 1 36 and polishing cloth wheel 2 38 together. Figure 10 As shown, polishing motor 1 35 and polishing motor 2 40 work, causing cloth strip 1 37 and cloth strip 2 39 to rub and collide with each other. The heat generated causes the polishing liquid on cloth strip 1 37 and cloth strip 2 39 to evaporate, and the abrasive on polishing cloth wheel 1 36 and polishing cloth wheel 2 38 to fall off.

[0059] (e) Each lifting cylinder 1 operates and reciprocates within a set range to adjust the height of the base 2. The self-rotating motor 9 operates and drives the hub 50 to rotate clockwise or counterclockwise. The vent valve 19 opens, and the compressed gas in the air tank 18 passes through the vent valve 19, the main pipe 20, and the channel 49 before being ejected from each nozzle 48 to clean the polishing liquid and abrasive in the main pipe 20 and the channel 49. At the same time, the compressed gas is blown toward the inner surface of the hub to clean the polishing liquid and abrasive on the inner surface.

[0060] After cleaning, the polishing cloth wheel 1 (36), polishing cloth wheel 2 (38), main pipe (20), channel (49), and inner surface of the hub will no longer have any residual polishing liquid or abrasive. This makes it easier to use new polishing liquid in the next polishing process and prevents the residual polishing liquid and abrasive from the previous process from mixing into the polishing liquid of the next process and affecting the polishing effect.

[0061] The polishing processes on the inner surface of the wheel hub include:

[0062] (1) First polishing process

[0063] Perform step (a), select the polishing slurry storage tank 15 with the largest abrasive diameter, and perform steps (b), (c), (d), and (e).

[0064] (2) Second polishing process

[0065] Select the polishing slurry reservoir 15 with the abrasive diameter in the middle and execute steps (b), (c), (d), and (e).

[0066] (3) Third polishing process

[0067] Select the polishing slurry storage tank 15 with the smallest abrasive diameter and execute steps (b), (c), (d), and (e).

[0068] As a preferred embodiment, the hub 50 is placed in the center of the turntable 3 with the spokes facing upwards. When the extension and retraction displacements of the lifting cylinder 1, the outer drive cylinder 31, the outer drive cylinder 33, the inner drive cylinder 42, and the inner drive cylinder 44 reach the set values, in conjunction with the rotation of the self-rotating motor 9, the polishing motor 35, and the polishing motor 40, and the spraying of polishing liquid onto the surface of the hub by the nozzle 47, the bottom end of the column 7 slides on the guide rail along the radial direction of the hub 50 and slides within the set range. Then, the polishing cloth wheel 36 and / or the polishing cloth wheel 38 can perform polishing operations on the outer surface of the hub 50 (including the spoke surface and the outer side surface of the hub), thereby achieving polishing operations on the entire surface of the hub.

[0069] The lifting cylinder 1, clamping cylinder 5, external drive cylinder 1 31, external drive cylinder 2 33, internal drive cylinder 1 42 and internal drive cylinder 2 44 can be hydraulic cylinders or pneumatic cylinders, and their piston rods can all be moved back and forth in a controlled manner.

[0070] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, the first object can be one or several. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0071] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the component itself.

Claims

1. A car wheel polishing machine, comprising a first polishing cloth wheel (36) and a second polishing cloth wheel (38), wherein the first polishing cloth wheel (36) and the second polishing cloth wheel (38) rotate around their own center lines of symmetry, characterized in that: Polishing cloth wheel one (36) and polishing cloth wheel two (38) are adapted to approach each other and make the cloth strip one (37) on the circumferential edge of polishing cloth wheel one (36) and the cloth strip two (39) on the circumferential edge of polishing cloth wheel two (38) collide and rub against each other; Polishing cloth wheel one (36) is mounted on bushing (21), polishing cloth wheel two (38) is mounted on vertical rod (14), bushing (21) is fitted and rotated on vertical rod (14), when bushing (21) rotates relative to vertical rod (14), polishing cloth wheel one (36) and polishing cloth wheel two (38) are adapted to approach each other; a toothed ring (24) is provided on the outer side wall of one end of bushing (21) along the circumferential direction, the toothed ring (24) meshes with a gear (25) on one side, the gear (25) is located at the rotor end of drive motor (26) on one side, and drive motor (26) is fixedly mounted on vertical rod (14); Polishing cloth wheel 1 (36) is connected to the rotor of polishing motor 1 (35) on one side. Polishing motor 1 (35) is located at the outer end of the outer piston rod 1 (32) of outer drive cylinder 1 (31). The cylinder tail end of outer drive cylinder 1 (31) is hinged to bushing (21), and its open end is hinged to the outer end of the outer piston rod 2 (331) of outer drive cylinder 2 (33). The cylinder tail of outer drive cylinder 2 (33) is hinged to bushing (21). The polishing cloth wheel 2 (38) is connected to the rotor of the polishing motor 2 (40) on one side. The polishing motor 2 (40) is located at the outer end of the inner piston rod 1 (41) of the inner drive cylinder 1 (42). The cylinder tail end of the inner drive cylinder 1 (42) is hinged to the vertical rod (14), and its open end is hinged to the outer end of the inner piston rod 2 (441) of the inner drive cylinder 2 (44). The cylinder tail end of the inner drive cylinder 2 (44) is hinged to the vertical rod (14).

2. The automotive wheel polishing machine according to claim 1, characterized in that: The plumb rod (14) has a channel (49) connecting its top and bottom ends. The top end of the plumb rod (14) has a main pipe (20). One end of the main pipe (20) is sealed to the upper end of the channel (49), and the other end of the main pipe (20) is sealed to the lower end of multiple discharge pipes (17). The upper end of each discharge pipe (17) is sealed to a storage tank (15) for storing polishing liquid. Each discharge pipe (17) is equipped with a discharge valve (16). The bottom end of the plumb rod (14) is equipped with a nozzle (47). The nozzle (47) has multiple spray holes (48) that are sealed to the channel (49).

3. The automotive wheel polishing machine according to claim 2, characterized in that: The other end of the main pipe (20) is also sealed to the gas storage tank (18) for storing compressed gas. A venting valve (19) is provided on the main pipe (20) located between the gas storage tank (18) and each drain pipe (17).

4. The automotive wheel polishing machine according to claim 3, characterized in that: The lower side of the vertical rod (14) is provided with a turntable (3) for placing the hub (50) on the top. The top of the turntable (3) is provided with a plurality of clamping devices along the circumferential direction to keep the hub (50) and the turntable (3) on the same symmetrical center line. The turntable (3) can rotate around its own symmetrical center line and slide on the base (2) on its lower side. The base (2) is adapted to move back and forth along the vertical direction.

5. The automotive wheel polishing machine according to claim 4, characterized in that: The plumb line (14) is fixed on the column (7), which is fixed to the ground or adapted to move radially along the hub (50).

6. A method for working an automotive wheel polishing machine according to claim 5, characterized in that... Includes the following steps: a. Clamp the hub (50) in the center of the turntable (3); b. Open the drain valve (16) next to the selected storage tank (15), the hub (50) rotates around its own center line of symmetry and moves back and forth in a certain height range along the vertical direction. After a set time, close the drain valve (16) and the hub (50) stops moving. c. The hub (50) rotates around its own symmetrical center line. Under the action of each drive cylinder, polishing cloth wheel one (36) and / or polishing cloth wheel two (38) abut against the surface of the hub (50), each polishing motor starts, polishing cloth wheel one (36) and / or polishing cloth wheel two (38) rotate at a set speed and direction, and the height of the hub (50) is adjusted within the set range. d. Under the action of each drive cylinder, polishing cloth wheel one (36) and polishing cloth wheel two (38) are separated from the surface of the hub (50), and the drive motor (26) drives the bushing (21) to rotate relative to the vertical rod (14). Polishing cloth wheel one (36) and polishing cloth wheel two (38) are suitable to approach each other and rotate, and cloth strip one (37) and cloth strip two (39) collide and rub against each other. e. If any polishing process is not completed, return to step b; if all polishing processes are completed, the process ends.

7. The working method of the automobile wheel hub polishing machine according to claim 6, characterized in that: Insert step h between step d and step e: h. Open the vent valve (19), the hub (50) rotates around its own symmetrical center line, the height of the hub (50) is adjusted back and forth within the set range, and after a set time, the vent valve (19) is closed and the hub (50) stops moving.

8. The working method of the automobile wheel polishing machine according to claim 6, characterized in that: In step b, the liquid discharge valve (16) and the vent valve (19) open and close synchronously.

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