Aluminum alloy wheel positioning mechanism

Abstract

The utility model discloses a kind of aluminium alloy wheel positioning mechanisms, belong to positioning device technical field, comprising: tensioning fixed mechanism, tensioning fixed mechanism includes rotating assembly and positioning platform, rotating assembly drives positioning platform rotation, clamping assembly is provided on positioning platform, clamping assembly is used to hold and fix wheel;Positioning mechanism, positioning mechanism includes the first vertical linear module of being set at the side of positioning platform, the moving end of first vertical linear module is fixed with first horizontal linear module, the moving end of first horizontal linear module is fixed with first servo motor, laser range finder is fixed on the output shaft of first servo motor, the output shaft of first servo motor is horizontally arranged for adjusting the angle of laser range finder emission laser.The utility model can improve the accuracy of wheel initial positioning, reduce wheel positioning time, and can be adapted to the positioning of different models of wheel.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, and in particular to an aluminum alloy wheel positioning mechanism. Background Technology

[0002] With the development of the automotive industry and the increasing demand from consumers for diverse wheel appearances, the processing requirements for wheel surfaces are becoming increasingly complex. For example, operations such as pad printing or laser engraving of logos on specific ribs or windows of the wheel require precise wheel positioning. Currently, a common initial positioning method for wheel positioning involves fixing the wheel on a platform, placing a high-precision camera on the front of the wheel, identifying the valve hole position by taking pictures, and then rotating the platform by a certain angle with the valve hole as a reference to complete the initial positioning of the wheel.

[0003] However, the existing initial positioning method has many problems. On the one hand, the valve hole positions vary significantly between different products; some products have valve holes located on the side of the rim, making it impossible for the camera to directly identify the valve hole position through photography. On the other hand, the photographic recognition and positioning of valve holes is greatly affected by various factors such as product shape, color, and ambient lighting, resulting in the inability to achieve accurate and rapid initial positioning. These problems restrict the improvement of wheel processing efficiency and quality.

[0004] Therefore, an aluminum alloy wheel positioning mechanism is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an aluminum alloy wheel positioning mechanism, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an aluminum alloy wheel positioning mechanism, comprising:

[0007] The tensioning and fixing mechanism includes a rotating component and a positioning platform. The rotating component drives the positioning platform to rotate. A clamping component is provided on the positioning platform for clamping and fixing the wheel.

[0008] The positioning mechanism includes a first vertical linear module disposed on one side of the positioning platform. A first horizontal linear module is fixedly connected to the moving end of the first vertical linear module. A first servo motor is fixedly connected to the moving end of the first horizontal linear module. A laser rangefinder is fixedly connected to the output shaft of the first servo motor. The output shaft of the first servo motor is horizontally configured to adjust the angle at which the laser rangefinder emits laser light.

[0009] Preferably, the clamping assembly includes a central hole formed on the positioning platform, a plurality of T-shaped grooves formed on the positioning platform, the plurality of T-shaped grooves surrounding the central hole, a claw slidably connected in the T-shaped groove, the top of the claw protruding out of the T-shaped groove, a first spring fixedly connected between the end of the T-shaped groove away from the central hole and the claw, and a driving assembly provided on the positioning platform, the driving assembly being used to drive the plurality of claws to synchronously move closer to or away from the central hole.

[0010] Preferably, the T-shaped groove penetrates the wall of the central hole, the end of the chuck extends into the central hole, the driving assembly includes a conical expansion sleeve coaxially arranged with the central hole, the tip of the conical expansion sleeve facing upward, the bottom of the conical expansion sleeve being located below the positioning platform, a connecting platform being fixedly connected to the bottom of the positioning platform, a first cylinder being fixedly connected to the connecting platform, the piston rod of the first cylinder being fixedly connected to the bottom of the conical expansion sleeve, and the connecting platform being connected to the rotating assembly.

[0011] Preferably, the rotating assembly includes a rotating base, the top of which has a first groove, a second servo motor is fixedly connected in the first groove, and the output shaft of the second servo motor is fixedly connected to the connecting platform.

[0012] Preferably, it also includes a base plate, the top of which is provided with multiple supports, and multiple second cylinders are fixedly connected between the supports and the base plate. Two belt conveyor assemblies are arranged side by side on the multiple supports, and the positioning platform is located between the two belts of the two belt conveyor assemblies.

[0013] Preferably, the base plate is provided with a blocking mechanism, the blocking mechanism including a horizontal propulsion component disposed on the base plate, the moving direction of the horizontal propulsion component being parallel to the transmission direction of the belt conveyor component, the moving end of the horizontal propulsion component being provided with a support plate, the top of the support plate being provided with a blocking roller, and the positioning platform and the blocking roller being arranged sequentially along the transmission direction of the belt conveyor component.

[0014] Preferably, the top of the support plate has a groove, a slider is slidably connected in the groove, the blocking roller is fixed to the slider, a second spring is fixed between the end of the groove near the positioning platform and the slider, a baffle is fixed to the top of the support plate, the baffle is located at the end of the blocking roller away from the positioning platform, and a pressure sensor is fixed to the side of the baffle near the blocking roller, the pressure sensor is directly opposite the blocking roller.

[0015] Preferably, the horizontal propulsion assembly includes a plurality of third cylinders fixed to the base plate, the third cylinders being arranged parallel to the transmission direction of the belt transmission assembly, and the piston rod of the third cylinder being fixed to the support plate.

[0016] This utility model discloses the following technical effects: Depending on the wheel model, the laser rangefinder is moved to a suitable position and angle via a first vertical linear module, a first horizontal linear module, and a first servo motor. The wheel is placed on a positioning platform and fixed by a clamping assembly. During initial positioning, the laser rangefinder emits a laser beam, and the wheel rotates on the positioning platform via a rotating assembly. When the laser beam emitted by the laser rangefinder illuminates the outer rim of the wheel hub, the distance measured by the laser rangefinder is short. When the laser beam emitted by the laser rangefinder passes through the valve hole of the wheel hub and illuminates the inner rim of the wheel hub, the distance measured by the laser rangefinder is long. Therefore, when the distance measured by the laser rangefinder is in the long range, it indicates that the laser beam emitted by the laser rangefinder has passed through the valve hole of the wheel hub, causing the wheel to stop rotating, and the initial positioning of the wheel hub is completed. This utility model can improve the accuracy of initial wheel positioning, reduce wheel positioning time, and is adaptable to the positioning of different wheel models. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the rotating component and the driving component in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping component in this utility model;

[0021] Figure 4 This is a schematic diagram of the blocking mechanism in this utility model.

[0022] In the diagram: 1. Positioning platform; 2. First vertical linear module; 3. First horizontal linear module; 4. First servo motor; 5. Laser rangefinder; 6. Center hole; 7. T-groove; 8. Claw; 9. First spring; 10. Conical expansion sleeve; 11. Connecting platform; 12. First cylinder; 13. Rotating base; 14. First groove; 15. Second servo motor; 16. Bracket; 17. Second cylinder; 18. Base plate; 19. Belt transmission assembly; 20. Support plate; 21. Blocking roller; 22. Slide groove; 23. Slider; 24. Second spring; 25. Baffle; 26. Pressure sensor; 27. Third cylinder; 28. Support bar; 29. ​​Drive motor; 30. Fixed roller; 31. Second vertical linear module; 32. Second horizontal linear module; 33. Camera. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1-4 This utility model provides an aluminum alloy wheel positioning mechanism, comprising:

[0026] The tensioning and fixing mechanism includes a rotating component and a positioning platform 1. The rotating component drives the positioning platform 1 to rotate. A clamping component is provided on the positioning platform 1, which is used to clamp and fix the wheel.

[0027] The positioning mechanism includes a first vertical linear module 2 disposed on one side of the positioning platform 1, a first horizontal linear module 3 fixedly connected to the moving end of the first vertical linear module 2, a first servo motor 4 fixedly connected to the moving end of the first horizontal linear module 3, a laser rangefinder 5 fixedly connected to the output shaft of the first servo motor 4, and the output shaft of the first servo motor 4 being horizontally set to adjust the angle at which the laser rangefinder 5 emits laser light.

[0028] The wheel (excluding the tire) is placed on the positioning platform 1 and fixed by the clamping assembly, so that the axis at the center hole of the fixed wheel coincides with the rotation axis of the rotating assembly. Therefore, when the rotating assembly drives the positioning platform 1 to rotate, the wheel rotates around its own axis.

[0029] A laser rangefinder mainly consists of a laser transmitter, a receiver, a timer, and a processor. Its working principle involves the laser transmitter emitting a laser pulse towards the target. The laser pulse is reflected back after encountering the target and received by the receiver. The timer records the time difference between laser emission and reception, and then the distance is calculated using the speed of light (the specifics are current technology and will not be elaborated here).

[0030] Depending on the wheel model, the laser rangefinder 5 is adjusted to a suitable position and angle via the first vertical linear module 2, the first horizontal linear module 3, and the first servo motor 4. This ensures that the laser emitted by the laser rangefinder 5 is at the same height as the valve hole on the side of the fixed wheel rim, and that the laser emitted by the laser rangefinder 5 is directed towards the wheel axis. During operation, the wheel to be positioned is placed on the positioning platform 1 and fixed by the clamping assembly. During initial positioning, the laser rangefinder 5 emits a laser, and the wheel rotates on the positioning platform 1 via the rotating assembly. When the laser emitted by the laser rangefinder 5 illuminates the outer rim of the wheel hub, the distance measured by the laser rangefinder 5 is short. When the laser emitted by the laser rangefinder 5 passes through the valve hole of the wheel hub and illuminates the inner rim of the wheel hub, the distance measured by the laser rangefinder 5 is long. Therefore, when the distance measured by the laser rangefinder 5 is in the long range, it indicates that the laser emitted by the laser rangefinder 5 has passed through the valve hole of the wheel hub, causing the wheel to stop rotating, and the initial positioning of the wheel hub is completed.

[0031] In some optional embodiments, the clamping assembly includes a central hole 6 formed on the positioning platform 1, and a plurality of T-shaped grooves 7 formed on the positioning platform 1. The plurality of T-shaped grooves 7 are arranged around the central hole 6. A claw 8 is slidably connected in the T-shaped groove 7. The top of the claw 8 protrudes out of the T-shaped groove 7. A first spring 9 is fixedly connected between the end of the T-shaped groove 7 away from the central hole 6 and the claw 8. A driving assembly is provided on the positioning platform 1. The driving assembly is used to drive the plurality of claws 8 to move synchronously closer to or away from the central hole 6.

[0032] In some alternative embodiments, the T-shaped groove 7 penetrates the wall of the central hole 6, the end of the claw 8 extends into the central hole 6, and the driving assembly includes a conical expansion sleeve 10 coaxially arranged with the central hole 6. The tip of the conical expansion sleeve 10 faces upward, and the bottom of the conical expansion sleeve 10 is located below the positioning platform 1. A connecting platform 11 is fixedly connected to the bottom of the positioning platform 1, and a first cylinder 12 is fixedly connected to the connecting platform 11. The piston rod of the first cylinder 12 is fixedly connected to the bottom of the conical expansion sleeve 10, and the connecting platform 11 is connected to the rotating assembly.

[0033] The wheel is placed on the positioning platform 1, with the center hole 6 on the positioning platform 1 located inside the center hole of the wheel. The first cylinder 12 drives the conical expansion sleeve 10 to rise, and the conical expansion sleeve 10 gradually squeezes outwards multiple claws 8. The first spring 9 is compressed, and the claws 8 slide in the T-shaped groove 7 until the claws 8 press against the wall of the center hole of the wheel. At this time, the wheel axis coincides with the axis of the center hole 6, thus completing the fixation of the wheel. When it is necessary to remove the wheel, the first cylinder 12 drives the conical expansion sleeve 10 to slowly descend, and the first spring 9 slowly returns to its original length. The first spring 9 pushes the claws 8 to move into the center hole 6, releasing the wheel.

[0034] Furthermore, a rubber layer is wrapped around the part of the claw 8 that extends out of the T-shaped groove 7 to achieve flexible contact with the wheel and reduce damage.

[0035] Furthermore, a pressure sensor can be fixed to the outside of the chuck 8. The pressure sensor and the first cylinder 12 are both electrically connected to the PLC controller. The pressure detected by the pressure sensor is transmitted to the PLC controller. When the pressure detected by the pressure sensors on the outside of all the chuck 8 reaches the preset pressure range, the PLC controller controls the first cylinder 12 to stop, thereby achieving precise adjustment of the wheel fixing force and facilitating the positioning of different wheel models.

[0036] In some alternative embodiments, the rotating assembly includes a rotating base 13, the top of which has a first groove 14, and a second servo motor 15 is fixedly connected in the first groove 14. The output shaft of the second servo motor 15 is fixedly connected to the connecting platform 11.

[0037] Furthermore, the second servo motor 15 is electrically connected to the PLC controller, and the PLC controller controls the starting, stopping and speed of the second servo motor 15.

[0038] In some alternative embodiments, a base plate 18 is also included, with a plurality of brackets 16 on the top of the base plate 18. A plurality of second cylinders 17 are fixedly connected between the brackets 16 and the base plate 18. Two belt conveyor assemblies 19 arranged side by side are provided on the plurality of brackets 16, and the positioning platform 1 is located between the two belts of the two belt conveyor assemblies 19.

[0039] Furthermore, the belt transmission assembly 19 includes a driving pulley and a driven pulley, both covered by a belt. The driving and driven pulleys are connected via belt drive. The two driving pulleys on the two belt transmission assemblies 19 are fixedly connected by a first shaft, and the two driven pulleys are fixedly connected by a second shaft. One of the driving pulleys is fixedly connected to the output shaft of the drive motor 29. A support bar 28 is provided in the middle of the belt to support it. The support bar 28 is fixedly connected to the bracket 16, and the drive motor 29 is fixedly connected to the support bar 28. The first and second shafts are rotatably connected to the support bar 28. In use, the drive motor 29 drives the two driving pulleys to rotate, thereby driving the belt transmission.

[0040] In some optional embodiments, a blocking mechanism is provided on the base plate 18. The blocking mechanism includes a horizontal propulsion component provided on the base plate 18. The moving direction of the horizontal propulsion component is parallel to the transmission direction of the belt transmission component 19. A support plate 20 is provided at the moving end of the horizontal propulsion component. A blocking roller 21 is provided on the top of the support plate 20. The positioning platform 1 and the blocking roller 21 are arranged sequentially along the transmission direction of the belt transmission component 19.

[0041] In some alternative embodiments, a groove 22 is provided on the top of the support plate 20, and a slider 23 is slidably connected in the groove 22. A blocking roller 21 is fixedly connected to the slider 23. A second spring 24 is fixedly connected between the end of the groove 22 near the positioning platform 1 and the slider 23. A baffle 25 is fixedly connected to the top of the support plate 20. The baffle 25 is located at the end of the blocking roller 21 away from the positioning platform 1. A pressure sensor 26 is fixedly connected to the side of the baffle 25 near the blocking roller 21. The pressure sensor 26 is directly opposite the blocking roller 21.

[0042] When the wheel is being transported on the belt transmission assembly 19, the front end of the wheel touches the blocking roller 21 and pushes the blocking roller 21 forward. The second spring 24 is stretched until the blocking roller 21 contacts the pressure sensor 26. After the pressure sensor 26 senses the pressure, the belt transmission assembly 19 stops transmitting.

[0043] Furthermore, two fixed rollers 30 are fixedly connected to the support plate 20, and a blocking roller 21 is located between the two fixed rollers 30. When the wheel reaches the designated position, the two fixed rollers 30 and the blocking roller 21 work together to block the wheel.

[0044] In some alternative embodiments, the horizontal propulsion assembly includes a plurality of third cylinders 27 fixed to the base plate 18. The third cylinders 27 are arranged parallel to the transmission direction of the belt transmission assembly 19, and the piston rod of the third cylinder 27 is fixed to the support plate 20.

[0045] Furthermore, a support frame is fixedly connected to the base plate 18, and the third cylinder 27 is fixedly connected to the support frame.

[0046] Furthermore, two support rods are provided, located on both sides of the two belt transmission assemblies 19. A second vertical linear module 31 is fixedly connected to each of the two support rods. The moving ends of the two second vertical linear modules 31 are fixedly connected to the horizontal plate. A second horizontal linear module 32 is fixedly connected to the horizontal plate. A high-precision camera 33 is fixedly connected to the moving end of the second horizontal linear module 32. The camera end of the high-precision camera 33 faces the wheel processing surface.

[0047] Furthermore, the first vertical linear module 2, the first horizontal linear module 3, the second vertical linear module 31, and the second horizontal linear module 32 can adopt linear motors, lead screw structures, linear cylinders, hydraulic cylinders, or other structures that can achieve linear reciprocating motion. This embodiment does not impose any restrictions.

[0048] In use, this utility model adjusts the laser rangefinder 5 to a suitable position and angle through the first vertical linear module 2, the first horizontal linear module 3 and the first servo motor 4, depending on the wheel model, so that the laser emitted by the laser rangefinder 5 is at the same height as the valve hole on the side of the wheel rim, and the laser emitted by the laser rangefinder 5 is directed towards the axis of the wheel; and according to the wheel model, the third cylinder 27 moves the blocking roller 21 to a suitable position.

[0049] The wheel is conveyed by two belt transmission assemblies 19. When it is conveyed to the top of the positioning platform 1, the front end of the wheel contacts the blocking roller 21 and pushes the blocking roller 21 forward until the blocking roller 21 contacts the pressure sensor 26. When the pressure of the pressure sensor 26 reaches the preset value, the PLC controller controls the belt transmission assembly 19 to stop. At this time, the wheel is located directly above the positioning platform 1.

[0050] The third cylinder 27 drives the blocking roller 21 to move away from the wheel, and then the second cylinder 17 drives the belt transmission assembly 19 to descend, so that the wheel falls onto the positioning platform 1. The first cylinder 12 drives the conical expansion sleeve 10 to rise, and the conical expansion sleeve 10 gradually squeezes the multiple claws 8 outward until the claws 8 squeeze the wall of the center hole of the wheel. When the pressure detected by the pressure sensor on the outside of all the claws 8 reaches the preset pressure range, the PLC controller controls the first cylinder 12 to stop. At this time, the wheel axis coincides with the axis of the center hole 6, and the wheel is fixed.

[0051] The wheel rotates on the positioning platform 1 driven by the second servo motor 15. The laser rangefinder 5 is aimed at the wheel and emits a laser to measure the distance. When the distance measured by the laser rangefinder is a long distance, it means that the laser emitted by the laser rangefinder 5 has passed through the wheel hub valve hole. The second servo motor 15 stops rotating, and the initial positioning of the wheel hub is completed.

[0052] Adjust the position of the high-precision camera 33 so that it can accurately and clearly identify and record the wheel rib feature lines. During subsequent fine positioning, take pictures of the same position on the wheel and compare and adjust them with the initially recorded pictures to make the product rib feature lines coincide.

[0053] The workflow is as follows: the wheel is placed in the belt transmission assembly 19 for transmission → the blocking roller 21 blocks the wheel and stops transmission → the blocking roller 21 is removed, the belt transmission assembly 19 descends, and the wheel falls onto the positioning platform 1 → the first cylinder 12 lifts the conical expansion sleeve 10, the pawl 8 slides outward and opens, and the wheel is fixed → the positioning platform 1 rotates, and the position of the valve hole is identified by the laser rangefinder 5 → the initial positioning is completed after the wheel rotates into place → the camera 33 takes a picture, and the wheel angle is finely adjusted according to the preset picture to complete the fine positioning.

[0054] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0055] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An aluminum alloy wheel positioning mechanism, characterized in that, include: The tensioning and fixing mechanism includes a rotating component and a positioning platform (1). The rotating component drives the positioning platform (1) to rotate. A clamping component is provided on the positioning platform (1) for clamping and fixing the wheel. The positioning mechanism includes a first vertical linear module (2) disposed on one side of the positioning platform (1), a first horizontal linear module (3) fixedly connected to the moving end of the first vertical linear module (2), a first servo motor (4) fixedly connected to the moving end of the first horizontal linear module (3), a laser rangefinder (5) fixedly connected to the output shaft of the first servo motor (4), and the output shaft of the first servo motor (4) being horizontally set to adjust the angle at which the laser rangefinder (5) emits laser light.

2. The aluminum alloy wheel positioning mechanism according to claim 1, characterized in that: The clamping assembly includes a central hole (6) on the positioning platform (1), and a plurality of T-shaped grooves (7) are provided on the positioning platform (1). The plurality of T-shaped grooves (7) are arranged around the central hole (6). A claw (8) is slidably connected in the T-shaped groove (7). The top of the claw (8) protrudes out of the T-shaped groove (7). A first spring (9) is fixed between the end of the T-shaped groove (7) away from the central hole (6) and the claw (8). A driving assembly is provided on the positioning platform (1). The driving assembly is used to drive the plurality of claws (8) to move towards or away from the central hole (6) synchronously.

3. The aluminum alloy wheel positioning mechanism of claim 2, wherein: The T-shaped groove (7) penetrates the wall of the central hole (6), and the end of the claw (8) extends into the central hole (6). The driving assembly includes a conical expansion sleeve (10) coaxially arranged with the central hole (6). The tip of the conical expansion sleeve (10) faces upward, and the bottom of the conical expansion sleeve (10) is located below the positioning platform (1). A connecting platform (11) is fixedly connected to the bottom of the positioning platform (1). A first cylinder (12) is fixedly connected to the connecting platform (11). The piston rod of the first cylinder (12) is fixedly connected to the bottom of the conical expansion sleeve (10). The connecting platform (11) is connected to the rotating assembly.

4. The aluminum alloy wheel positioning mechanism of claim 3, wherein: The rotating assembly includes a rotating base (13), the top of which has a first groove (14), and a second servo motor (15) is fixedly connected in the first groove (14). The output shaft of the second servo motor (15) is fixedly connected to the connecting platform (11).

5. The aluminum alloy wheel positioning mechanism of claim 1, wherein: It also includes a base plate (18), on the top of which are provided multiple supports (16), and multiple second cylinders (17) are fixed between the supports (16) and the base plate (18). Two belt transmission assemblies (19) are arranged side by side on the multiple supports (16), and the positioning platform (1) is located between the two belts of the two belt transmission assemblies (19).

6. The aluminum alloy wheel positioning mechanism of claim 5, wherein: A blocking mechanism is provided on the base plate (18). The blocking mechanism includes a horizontal propulsion component provided on the base plate (18). The moving direction of the horizontal propulsion component is parallel to the transmission direction of the belt transmission component (19). A support plate (20) is provided at the moving end of the horizontal propulsion component. A blocking roller (21) is provided on the top of the support plate (20). The positioning platform (1) and the blocking roller (21) are arranged sequentially along the transmission direction of the belt transmission component (19).

7. The aluminum alloy wheel positioning mechanism of claim 6, wherein: The top of the support plate (20) is provided with a sliding groove (22), and a slider (23) is slidably connected in the sliding groove (22). The blocking roller (21) is fixedly connected to the slider (23). A second spring (24) is fixedly connected between the end of the sliding groove (22) near the positioning platform (1) and the slider (23). A baffle (25) is fixedly connected to the top of the support plate (20). The baffle (25) is located at the end of the blocking roller (21) away from the positioning platform (1). A pressure sensor (26) is fixedly connected to the side of the baffle (25) near the blocking roller (21). The pressure sensor (26) is directly opposite the blocking roller (21).

8. The aluminum alloy wheel positioning mechanism of claim 6, wherein: The horizontal propulsion assembly includes a plurality of third cylinders (27) fixed to the base plate (18). The third cylinders (27) are arranged parallel to the transmission direction of the belt transmission assembly (19), and the piston rod of the third cylinders (27) is fixed to the support plate (20).

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