Hub repairing production line

Abstract

A hub repairing production line comprises a welding device (90), a grinding and polishing device (100) and a paint spraying and demisting cabinet (110) which are located on one side of a conveyor (80) and sequentially arranged from the feeding end to the discharging end. Deformation of a welding plate in the welding process can be effectively prevented, and the welding efficiency and the welding quality are improved; (2) the grinding motor is mounted through the universal ball support, various grinding angles can be adjusted at will according to requirements, and the grinding quality and efficiency can be greatly improved; and (3) the movable rotary paint spraying table is convenient for moving the hub and spraying paint, the paint spraying efficiency is improved, the paint mist absorption efficiency can be greatly improved by matching the side water curtain plate with the middle water curtain plate, and a transparent protective cover can effectively reduce the dissipation of the paint mist, so that a relatively good working environment is provided for workers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hub repair technical field, concretely relates to a hub repair production line. BACKGROUND

[0002] The welding repair of the hub is mostly because of the bending or rupture of the outer ring, and the hub repair needs to be carried out in turn welding, polishing and paint spraying process, because the hub is circular, the welding and polishing positioning are mostly manual positioning operation, the processing efficiency is not high, and the technical requirement to the staff is higher, leading to the uneven repair quality. At the same time, most of the paint spraying is carried out in the water curtain cabinet, and the weight and volume of the hub are large, and it is inconvenient to fix and move in the water curtain cabinet, the front side of the existing water curtain cabinet is open type, and a water curtain plate is arranged in the middle part to absorb the paint mist, and the two sides of the cabinet body cannot absorb the paint mist, the paint mist purification effect is not ideal, and the cabinet body side is not easy to clean after adhering the paint mist for a long time; At the same time, more paint mist still escapes in the paint spraying process, which makes the staff in a poor working environment, and affects the health of the staff. CONTENT OF THE UTILITY MODEL

[0003] The utility model is just to solve the above problems, and provides a hub repair production line.

[0004] The utility model discloses a welding station, polishing and polishing device and paint spraying and mist removing cabinet are sequentially arranged from the feeding end to the discharging end on the one side of the conveyor,

[0005] The welding station includes a welding table and a welding plate positioning and clamping assembly, the welding table is provided with a first expansion shaft, the welding plate positioning and clamping assembly includes an arc-shaped guide rail and a pair of supporting arms, the arc-shaped guide rail is coaxially installed on the first expansion shaft through the pair of supporting arms, a group of adjusting sliding blocks are arranged on the arc-shaped guide rail, and a welding plate positioning clamp is arranged on the adjusting sliding block;

[0006] The polishing and polishing device includes a polishing table, a polishing motor, a horizontal positioning sliding table and a vertical positioning sliding table, the second expansion shaft is rotatably connected to the polishing table, the horizontal positioning sliding table is installed on the polishing table and located below the second expansion shaft, the vertical positioning sliding table is installed on the sliding block of the horizontal positioning sliding table and located in front of the second expansion shaft, and the polishing motor is movably installed on the sliding block of the vertical positioning sliding table through a universal ball support;

[0007] The paint spraying and mist removing cabinet includes a cabinet body and a rotary paint spraying table, a circulating water tank is arranged on the bottom of the cabinet body, the cabinet body is divided into a paint spraying chamber and an exhaust chamber through a middle water curtain plate, a gap is formed between the bottom of the middle water curtain plate and the circulating water tank, the rotary paint spraying table is located in the paint spraying chamber, an exhaust fan is arranged on the top of the exhaust chamber, a water storage tank is arranged on one side of the top of the middle water curtain plate, a plurality of water outlets are arranged on one side of the water storage tank and face the middle water curtain plate, and the water storage tank is communicated with the circulating water tank through a water pump.

[0008] One end of the support arm is provided with a connecting sleeve, the two connecting sleeves are movably connected through a shaft sleeve, the shaft sleeve movably sleeves on a first expansion shaft, the other end of the support arm is adjustably installed on the arc-shaped guide rail through a connecting sliding block, a positioning locking sleeve for limiting the axial position of the two connecting sleeves is screwed on the first expansion shaft; the first expansion shaft is provided with a positioning guide groove, and the shaft sleeve is provided with a positioning block matched with the positioning guide groove; one side of the support arm is provided with a sliding adjusting block, and a limiting guide roller is arranged on the sliding adjusting block.

[0009] An adjusting rod is arranged on the adjusting sliding block, and a welding plate positioning clamp is fixedly connected to the adjusting rod; the welding plate positioning clamp comprises a U-shaped clamp seat, and one side of the U-shaped clamp seat is provided with a first locking screw rod.

[0010] The horizontal positioning sliding table and the vertical positioning sliding table are both manual screw rod sliding tables.

[0011] A rotating seat is hingedly connected to the polishing table, and the horizontal positioning sliding table is fixedly connected to the rotating seat; the polishing table is provided with a rotating seat mounting positioning groove, the rotating seat is hingedly connected to the rotating seat mounting positioning groove through a pin shaft, and a locking rod is screwed on the rotating seat.

[0012] The universal ball support comprises a universal ball head seat and a universal ball head rod rotating with the universal ball head seat, one end of the universal ball head rod is fixedly connected to the sliding block of the vertical positioning sliding table, the polishing motor is fixedly connected to the universal ball head seat, a pair of second locking screw rods for locking the universal ball head rod are screwed on the universal ball head seat; the end face of the second locking screw rod in contact with the universal ball head rod is a spherical surface structure recessed inward.

[0013] Side water curtain plates extending into the circulating water tank are arranged on the side plates on the left and right sides of the cabinet body, and the left and right ends of the water storage tank are each provided with a group of water outlets facing the corresponding side water curtain plate.

[0014] The front upper side of the cabinet body is provided with an openable transparent protective cover, and the transparent protective cover is an inclined structure with one end of the bottom extending outward.

[0015] The rotating paint spraying table is movably installed in the paint spraying chamber through the Z-shaped moving frame, and the bottom of the cabinet body is provided with a limiting guide roller matched with the Z-shaped moving frame.

[0016] A filter cover is arranged at a corner in the circulating water tank, and the water pump is located in the filter cover; a spraying pipe is arranged in the exhaust chamber, a group of spraying heads are arranged on the spraying pipe, and a group of flow guide plates are arranged in the exhaust chamber below the spraying pipe in an upper-to-lower staggered manner.

[0017] The utility model discloses a wheel hub repair device has following advantages: ① through the welding plate positioning and clamping assembly quick alignment and positioning in the wheel hub repair site welding plate, can effectively prevent the deformation of welding plate in the welding process, improve the welding efficiency and welding quality, ② polishing motor installs through universal ball support, can adjust angle various polishing angle according to demand, and the horizontal positioning slide table and vertical positioning slide table cooperate for the position of quick adjustment polishing motor, the position and angle of polishing motor are fixed when polishing, can greatly improve polishing quality and efficiency, ③ the movable rotary paint spraying platform is convenient for wheel hub movement and paint spraying, improves the paint spraying efficiency, and the side water screen board and the cooperation of the middle water screen board can greatly improve the paint mist absorption efficiency, and the transparent protective cover can effectively reduce the paint mist diffusion, provides a relatively good working environment for the staff. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the utility model.

[0019] Figure 2 It is the welding position structure schematic diagram.

[0020] Figure 3 It is the welding position exploded structure schematic diagram.

[0021] Figure 4 It is the welding plate positioning and clamping assembly second visual angle structure schematic diagram.

[0022] Figure 5 It is the welding position use state structure schematic diagram.

[0023] Figure 6 It is the polishing and polishing device structure schematic diagram.

[0024] Figure 7 It is the second polishing station structure schematic diagram of polishing and polishing device.

[0025] Figure 8 It is the universal ball support exploded structure schematic diagram.

[0026] Figure 9 It is the polishing and polishing device use state structure schematic diagram.

[0027] Figure 10 It is the paint spraying and mist removing cabinet structure schematic diagram.

[0028] Figure 11 It is the paint spraying and mist removing cabinet internal structure schematic diagram. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used for distinction, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "set", "connected" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] As shown in the drawings, the present application comprises a welding station 90, a polishing and polishing device 100 and a paint spraying and defogging cabinet 110 arranged in sequence from the feeding end to the discharging end on one side of the conveyor 80, and the hub is conveyed through the conveyor 80 and sequentially enters the welding station, the polishing and polishing station and the paint spraying station.

[0034] The welding device 90 comprises a welding table 1 and a welding plate positioning and clamping assembly, the welding table 1 is provided with a first expanding shaft 2, the welding plate positioning and clamping assembly comprises an arc-shaped guide rail 3 and a pair of supporting arms 4, the arc-shaped guide rail 3 is coaxially arranged on the first expanding shaft 2 through the pair of supporting arms 4, the arc-shaped guide rail 3 is provided with a group of adjusting sliding blocks 5, and the welding plate positioning and clamping assembly is provided with a welding plate positioning clamp 6 on the adjusting sliding blocks 5.

[0035] The first expanding shaft 2 is a mechanical expanding shaft, the expanding or loosening action is adjusted by rotating a handle, in use, first, a hub sleeve is arranged on the first expanding shaft 2, the expanding element of the first expanding shaft 2 is expanded to fix the hub, then the welding plate positioning and clamping assembly is arranged on the end of the first expanding shaft 2, the position of the welding plate positioning clamp 6 is adjusted, a welding plate is clamped and aligned at the repair position of the hub through the group of adjusting welding plate positioning clamps 6, and after being fixed, the welding seam is welded.

[0036] The arc-shaped guide rail 3 is a semicircular structure and is coaxially arranged on the first expanding shaft 2, the adjusting sliding blocks 5 can slide on the arc-shaped guide rail 3, the adjusting sliding blocks 5 are provided with fastening screws, and the position of the adjusting sliding blocks 5 is adjusted and then fixed through the fastening screws.

[0037] Further, one end of the supporting arm 4 is provided with a connecting sleeve 9, the two connecting sleeves 9 are movably connected through a shaft sleeve 10, the shaft sleeve 10 is movably sleeved on the first expanding shaft 2, the other end of the supporting arm 4 is adjustably arranged on the arc-shaped guide rail 3 through a connecting sliding block 11, and the first expanding shaft 2 is screwed with a positioning locking sleeve 12 for limiting the axial position of the two connecting sleeves 9.

[0038] The two connecting sleeves 9 are sleeved on the shaft sleeve 10 to form an integral sleeve on the first expanding shaft 2, the connecting sleeves 9 can rotate on the shaft sleeve 10 to adjust the opening angle of the two supporting arms 4, after being arranged, the two supporting arms 4 are located on the same plane, the connecting sliding block 11 can slide on the arc-shaped guide rail 3, one side of the connecting sliding block 11 is provided with a fastening screw for fixing the position of the connecting sliding block 11, after the welding plate positioning and clamping assembly is arranged on the first expanding shaft 2, the positioning locking sleeve 12 positions the welding plate positioning and clamping assembly from one side, that is, one side of the welding plate positioning and clamping assembly is attached to the hub, and the other side of the welding plate positioning and clamping assembly is fixed through the positioning locking sleeve 12. In the present case, the end of the first expanding shaft 2 is provided with external threads, and the positioning locking sleeve 12 is provided with internal threads.

[0039] The first expanding shaft 2 is provided with a positioning guide groove, and the shaft sleeve 10 is provided with a positioning block matched with the positioning guide groove. That is, the shaft sleeve 10 is fixedly arranged on the end of the first expanding shaft 2 and cannot rotate. In the present case, the shaft sleeve 10 and the positioning locking sleeve 12 are both arranged on the end of the first expanding shaft 2, that is, in the position without the expanding element of the first expanding shaft 2.

[0040] The shaft sleeve 10 is provided with a protruding part bent outward at one end, which is used to limit the inner connecting sleeve 9, while the positioning and locking sleeve 12 applies pressure to the connecting sleeve 9 from the outside, cooperating with the shaft sleeve 10 to clamp the two connecting sleeves 9 from the inside and outside.

[0041] When the welding plate positioning and clamping assembly is fixed, one of the adjusting welding plate positioning clamps 6 can be clamped on the hub outer ring to be more stable.

[0042] Further, one side of the supporting arm 4 is provided with a sliding adjusting block 13, and a limiting guide roller 14 is arranged on the sliding adjusting block 13.

[0043] The limiting guide roller 14 is used to fit on the outside of the hub outer ring, which facilitates the adjustment of the overall position of the welding plate positioning and clamping assembly, and the sliding adjusting block 13 can slide up and down on the supporting arm 4, which is used to adjust the height of the limiting guide roller 14 according to the size of the hub.

[0044] Further, the adjusting sliding block 5 is provided with an adjusting rod 16, and the welding plate positioning clamp 6 is fixedly connected to the adjusting rod 16. The adjusting rod 16 is used to adjust the vertical position of the welding plate positioning clamp 6, and one side of the adjusting sliding block 5 is provided with a fastening screw, which is used to fix the position of the adjusting rod 16.

[0045] The adjusting sliding block 5 is provided with a positioning guide block, and the adjusting rod 16 is provided with a positioning guide groove matched with the positioning guide block. The adjusting rod 16 is movably inserted into the adjusting sliding block 5 and can only move up and down, but cannot rotate, so as to ensure that the welding plate positioning clamp 6 remains parallel to the side edge of the hub.

[0046] Preferably, the welding plate positioning clamp 6 comprises a U-shaped clamp seat 17, and one side of the U-shaped clamp seat 17 is provided with a first locking screw 18.

[0047] In the case, the first locking screw 18 is a movable part, and the inner side plate of the U-shaped clamp seat 17 opposite to the first locking screw 18 is in the same plane as the limiting guide roller 14, that is, after the welding plate is clamped by a group of welding plate positioning clamps 6, it is in the same plane as the hub.

[0048] The polishing device 100 comprises a polishing table 20, a polishing motor 21, a horizontal positioning sliding table 22 and a vertical positioning sliding table 23. The second expansion shaft 25 is rotatably connected to the polishing table 20. The horizontal positioning sliding table 22 is installed on the polishing table 20 and located below the second expansion shaft 25. The vertical positioning sliding table 23 is installed on the sliding block of the horizontal positioning sliding table 22 and located in front of the second expansion shaft 25. The polishing motor 21 is movably installed on the sliding block of the vertical positioning sliding table 23 through a universal ball support 26.

[0049] The second expanding shaft 25 is a mechanical expanding shaft, which is adjusted by rotating the handle to expand or loosen, and the output end of the grinding motor 21 is provided with a grinding wheel. In use, the wheel hub is installed on the second expanding shaft 25, the expanding element of the second expanding shaft 25 is expanded to fix the wheel hub, and after the wheel hub is fixed, the wheel hub can be rotated with the second expanding shaft 25. Then, the grinding wheel of the grinding motor 21 is moved to the grinding position by cooperating the transverse positioning sliding table 22 with the vertical positioning sliding table 23, and the inclination angle of the grinding motor 21 can be adjusted by the universal ball support 26, so that the grinding wheel is parallel to the grinding part of the wheel hub. The grinding motor 21 is started, the grinding wheel rotates to grind the welding part of the wheel hub, and the staff can grind the welding seam in turn by rotating the wheel hub. In the work, the grinding motor 21 is a fixed part, which rotates in place to grind, and the wheel hub is a movable part. Since the wheel hub is circular, when the position of the grinding motor 21 is determined, the wheel hub can be rotated to grind the same plane of the wheel hub.

[0050] Preferably, the transverse positioning sliding table 22 and the vertical positioning sliding table 23 are both manual screw rod sliding tables.

[0051] Further, the grinding table 20 is hinged with a rotating seat 28, and the transverse positioning sliding table 22 is fixedly connected to the rotating seat 28.

[0052] When the outer side of the wheel hub needs to be ground, the transverse positioning sliding table 22 on the rotating seat 28 is kept parallel to the second expanding shaft 25, and when the inner side of the wheel rim (i.e. the contact surface with the tire) needs to be ground, the direction of the rotating seat 28 can be adjusted, i.e. the transverse positioning sliding table 22 is adjusted to be perpendicular to the second expanding shaft 25, so that the grinding wheel of the grinding motor 21 can extend into the inner side of the wheel rim from the side to grind.

[0053] Further, the grinding table 20 is provided with a rotating seat installation positioning groove, the rotating seat 28 is hinged in the rotating seat installation positioning groove through a pin shaft, a locking rod 30 is screwed on the rotating seat 28. The locking rod 30 is used to lock the rotating seat 28 after the angle is adjusted, the rotating seat 28 is provided with a threaded hole, one end of the locking rod 30 is provided with a locking knob, and the rotating seat 28 and the grinding table 20 are fixed by rotating the locking rod 30.

[0054] Preferably, the universal ball support 26 includes a universal ball head seat 31 and a universal ball head rod 32 rotating with the universal ball head seat 31, one end of the universal ball head rod 32 is fixedly connected to the sliding block of the vertical positioning sliding table 23, the grinding motor 21 is fixedly connected to the universal ball head seat 31, and a pair of second locking screws 33 for locking the universal ball head rod 32 are screwed on the universal ball head seat 31.

[0055] The universal ball head rod 32 is a fixed part, the universal ball head base 31 is a movable part, the polishing motor 21 is fixedly connected to the universal ball head base 31 and follows the angle adjustment, and the two second locking screws 33 are used for locking the universal ball head base 31, so that the universal ball head base 31 is more stable and deviation does not occur during polishing.

[0056] Further, the end face of the second locking screw 33 in contact with the universal ball head rod 32 is a concave spherical surface structure, so that the contact area between the end face of the second locking screw 33 and the ball head is increased, and the locking is more reliable.

[0057] The paint spraying and mist removing cabinet 110 comprises a cabinet body 50 and a rotary paint spraying table 51, the bottom of the cabinet body 50 is provided with a circulating water tank 53, the cabinet body 50 is divided into a paint spraying chamber and an exhaust chamber by a middle water curtain plate 55, a gap is formed between the bottom of the middle water curtain plate 55 and the circulating water tank 53, the rotary paint spraying table 51 is located in the paint spraying chamber, an exhaust fan 56 is arranged at the top of the exhaust chamber, a water storage tank 57 is arranged on the cabinet body 50 at one side of the top of the middle water curtain plate 55, a plurality of water outlets are arranged on one side of the water storage tank 57 and face the middle water curtain plate 55, and the water storage tank 57 is communicated with the circulating water tank 53 through a water pump.

[0058] The hub is placed on the rotary paint spraying table 51, the rotary paint spraying table 51 is rotated to uniformly spray paint on the hub, water is injected into the circulating water tank 53, the water pump pumps the water in the circulating water tank 53 into the water storage tank 57, and then the water flows to the middle water curtain plate 55 through the water outlets, so that a water curtain is formed on the surface of the middle water curtain plate 55, the flowing water curtain adsorbs the paint mist and falls back into the circulating water tank 53, and the airflow is discharged to the outside through the exhaust chamber.

[0059] Further, side water curtain plates 60 are arranged on the side plates on the left and right sides of the cabinet body 50 and extend into the circulating water tank 53, and a group of water outlets are arranged on the left and right ends of the water storage tank 57 and face the corresponding side water curtain plates 60.

[0060] The side water curtain plates 60 are inclined and extend towards the middle, so that the water curtain can be formed on the side water curtain plates 60, and the two side water curtain plates 60 and the middle water curtain plate 55 form a half-enclosed U-shaped adsorption area, which can better adsorb the paint mist and avoid the paint mist adhering to the side plates.

[0061] In the embodiment, the middle water curtain plate 55 is an arc structure protruding forward, and the side water curtain plates 60 located at the opening side of the cabinet body 50 are provided with baffles to prevent water from flowing out of the cabinet body 50.

[0062] Further, a transparent protective cover 62 is arranged on the upper front side of the cabinet body 50 and can be opened, and the transparent protective cover 62 is an inclined structure extending outward from the bottom.

[0063] The transparent protective cover 62 is hingedly connected to the cabinet 50 at one end of the top thereof by a pin shaft, facilitating opening. A pair of supporting rods 72 can be provided on the front side of the cabinet 50, and the transparent protective cover 62 is fixed in position after being opened, facilitating the entry of the staff into the interior for cleaning. Specifically, one end of the supporting rod 72 is hingedly connected to the cabinet 50, and the other end of the supporting rod 72 is provided with a fixing fork, and an antiskid pad is arranged in the fixing fork. When the supporting rod 72 is opened, the transparent protective cover 62 is located in the fixing fork at the two sides thereof.

[0064] The height of the transparent protective cover 62 after being lowered is two-thirds of the height of the opening on the front side of the cabinet 50, that is, after the transparent protective cover 62 is lowered, the lower part of the cabinet 50 is still in an open state, facilitating the entry of the staff into the interior for paint spraying operation.

[0065] Further, the rotating paint spraying table 51 is provided with a Z-shaped moving frame 65 at the bottom thereof, and the rotating paint spraying table 51 is movably arranged in the paint spraying chamber through the Z-shaped moving frame 65. The bottom of the cabinet 50 is provided with a limiting guide roller 66 matched with the Z-shaped moving frame 65.

[0066] The bottom of the Z-shaped moving frame 65 is provided with a set of walking wheels, and the Z-shaped structure facilitates the insertion into the cabinet 50. The wheels can be quickly moved in or out through the Z-shaped moving frame 65. The rotating paint spraying table 51 is arranged at the top of the Z-shaped moving frame 65 through a rotating disc.

[0067] In the present case, a gap of 5-10 mm is arranged between the limiting guide roller 66 and the insertion end of the bottom of the Z-shaped moving frame 65. The limiting guide roller 66 facilitates the smooth insertion of one end of the Z-shaped moving frame 65 into the bottom of the cabinet 50, and simultaneously, the limiting guide roller 66 can limit the lifting of one end of the Z-shaped moving frame 65 during operation.

[0068] Further, a filter cover 68 is arranged at a corner of the circulating water tank 53, and the water pump is arranged in the filter cover 68.

[0069] The paint mist floats on the water surface, and the filter cover 68 can block the paint adsorbed on the water surface, avoiding the entry of the paint into the water pump and the pipeline.

[0070] Further, a spraying pipe 70 is arranged in the exhaust chamber, and a set of spraying heads are arranged on the spraying pipe 70. A set of flow guide plates 71 are arranged in the exhaust chamber below the spraying pipe 70, staggered from top to bottom.

[0071] The spraying pipe 70 is communicated with the water storage tank 57 through a pump. After the exhaust fan 56 is turned on, the cabinet 50 is in a negative pressure state. Part of the paint mist is adsorbed by the water curtain, and the other part enters the exhaust chamber. A set of spraying heads form a spraying area in the upper part of the exhaust chamber, and the paint mist passing through can be adsorbed by water and fall back into the circulating water tank 53. A set of staggered flow guide plates 71 are used to change the direction of airflow and increase the length of airflow, thereby improving the effect of paint mist adsorption.

Claims

1. A wheel hub repair production line characterized by The welding station (90), the polishing device (100) and the paint spraying and mist removing cabinet (110) are sequentially arranged from the feeding end to the discharging end on one side of the conveyor (80), The welding station (90) comprises a welding table (1) and a welding plate positioning and clamping assembly. The welding table (1) is provided with a first expansion shaft (2). The welding plate positioning and clamping assembly comprises an arc-shaped guide rail (3) and a pair of supporting arms (4). The arc-shaped guide rail (3) is coaxially arranged on the first expansion shaft (2) through the pair of supporting arms (4). The arc-shaped guide rail (3) is provided with a group of adjusting sliding blocks (5). The welding plate positioning and clamping assembly is arranged on the adjusting sliding blocks (5). The polishing device (100) comprises a polishing table (20), a polishing motor (21), a horizontal positioning sliding table (22) and a vertical positioning sliding table (23). The second expansion shaft (25) is rotatably connected to the polishing table (20). The horizontal positioning sliding table (22) is arranged on the polishing table (20) and below the second expansion shaft (25). The vertical positioning sliding table (23) is arranged on the sliding block of the horizontal positioning sliding table (22) and in front of the second expansion shaft (25). The polishing motor (21) is movably arranged on the sliding block of the vertical positioning sliding table (23) through a universal ball support (26). The paint spraying and mist removing cabinet (110) comprises a cabinet body (50) and a rotating paint spraying table (51). The bottom of the cabinet body (50) is provided with a circulating water tank (53). The cabinet body (50) is divided into a paint spraying chamber and an exhaust chamber through a middle water curtain plate (55). A gap is arranged between the bottom of the middle water curtain plate (55) and the circulating water tank (53). The rotating paint spraying table (51) is arranged in the paint spraying chamber. An exhaust fan (56) is arranged on the top of the exhaust chamber. A water storage tank (57) is arranged on one side of the top of the middle water curtain plate (55). A plurality of water outlets are arranged on one side of the water storage tank (57) and face the middle water curtain plate (55). The water storage tank (57) is communicated with the circulating water tank (53) through a water pump.

2. A wheel hub repair production line according to claim 1, characterized in that One end of the supporting arm (4) is provided with a connecting sleeve (9). The two connecting sleeves (9) are movably connected through an axle sleeve (10). The axle sleeve (10) is movably sleeved on the first expansion shaft (2). The other end of the supporting arm (4) is adjustably arranged on the arc-shaped guide rail (3) through a connecting sliding block (11). The first expansion shaft (2) is screwed with a positioning locking sleeve (12) for limiting the axial position of the two connecting sleeves (9). The first expansion shaft (2) is provided with a positioning guide groove. The axle sleeve (10) is provided with a positioning block matched with the positioning guide groove. One side of the supporting arm (4) is provided with a sliding adjusting block (13). A limiting guide roller (14) is arranged on the sliding adjusting block (13).

3. A wheel repair production line according to claim 1, characterized in that An adjusting rod (16) is arranged on the adjusting sliding block (5). The welding plate positioning and clamping assembly (6) is fixedly connected to the adjusting rod (16). The welding plate positioning and clamping assembly (6) comprises a U-shaped clamp seat (17). One side of the U-shaped clamp seat (17) is provided with a first locking screw (18).

4. A wheel repair production line according to claim 1, characterized in that The horizontal positioning sliding table (22) and the vertical positioning sliding table (23) are both manual screw sliding tables.

5. A wheel repair production line according to claim 1, characterized in that The polishing table (20) is hinged with a rotating seat (28), and the transverse positioning sliding table (22) is fixedly connected to the rotating seat (28); the polishing table (20) is provided with a rotating seat mounting positioning groove, the rotating seat (28) is hinged in the rotating seat mounting positioning groove through a pin shaft, and the rotating seat (28) is screwed with a locking rod (30).

6. A wheel repair production line according to claim 1, characterized in that The universal ball support (26) comprises a universal ball head seat (31) and a universal ball head rod (32) rotating in cooperation with the universal ball head seat (31), one end of the universal ball head rod (32) is fixedly connected to the sliding block of the vertical positioning sliding table (23), the polishing motor (21) is fixedly connected to the universal ball head seat (31), the universal ball head seat (31) is screwed with a pair of second locking screws (33) for locking the universal ball head rod (32); the end surface of the second locking screw (33) in contact with the universal ball head rod (32) is a spherical surface structure recessed inward.

7. A wheel repair production line according to claim 1, characterized in that The side plates on the left and right sides of the cabinet body (50) are respectively provided with side water curtain plates (60) extending into the circulating water tank (53), and the left and right ends of the water storage tank (57) are each provided with a group of water outlets facing the corresponding side water curtain plate (60).

8. A wheel repair production line according to claim 1, characterized in that The front side upper portion of the cabinet body (50) is provided with an openable transparent protective cover (62), and the transparent protective cover (62) is an inclined structure with one end of the bottom extending outward.

9. A wheel repair production line according to claim 1, characterized in that The bottom of the rotary paint spraying table (51) is provided with a Z-shaped moving frame (65), the rotary paint spraying table (51) is movably installed in the paint spraying chamber through the Z-shaped moving frame (65), and the bottom of the cabinet body (50) is provided with a limiting guide roller (66) matched with the Z-shaped moving frame (65).

10. A wheel repair production line according to claim 1, characterized in that One corner of the circulating water tank (53) is provided with a filter cover (68), and the water pump is located in the filter cover (68); the exhaust chamber is provided with a spraying pipe (70), and a group of spraying heads are arranged on the spraying pipe (70); a group of flow guide plates (71) are arranged in the exhaust chamber below the spraying pipe (70) from top to bottom in a staggered manner.

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