Hub spraying equipment

Abstract

The invention discloses hub spraying equipment, and belongs to the technical field of hub spraying. Hub spraying equipment comprises a supporting seat and a coating box, a supporting frame and a spraying gun are fixedly installed on the supporting seat, a corrugated hose is connected between the spraying gun and the coating box, the hub spraying equipment further comprises a first supporting rod and a second supporting rod which are fixedly installed on the supporting seat, and the second supporting rod is provided with a platform part and a sliding groove; the clamping plate is slidably mounted in the sliding groove, and a clamping cavity for fixing the hub is formed between the clamping plate and the platform part; a top block is slidably connected in the water inlet bin; wherein a water tank is fixedly installed on the supporting seat, a water inlet pipe is fixedly connected between the water tank and the water inlet bin, and during work, the driving piece enables the clamping plate to slide along the sliding groove and gradually get close to the hub, and finally a stable clamping cavity is formed, so that it is ensured that the hub cannot move in the spraying process; the clamping plate plays a role in shielding the center hole of the hub, the coating is prevented from entering the center hole area, and the functionality and the assembly precision of the hub are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel spraying, and particularly relates to a wheel spraying device. Background Art

[0002] With the development of the automotive industry and the increasing personalized needs of consumers for vehicles, as an important part of the vehicle, the appearance design and surface treatment process of wheels have received more and more attention. Wheels not only affect the overall aesthetics of the vehicle, but also are directly related to driving safety and durability. Therefore, how to improve the spraying quality and efficiency of wheels and achieve diverse surface effects has become a key research direction in the industry.

[0003] The central hole of the wheel is usually used for installation on the wheel bearing or center cover of the vehicle. During the spraying process, if these areas are covered with paint, it may cause installation difficulties or affect their normal functions, such as affecting the precise fit between the wheel and the axle. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that during the spraying operation, the central hole of the wheel is usually also sprayed, which will affect the precise fit between the wheel and the axle, and to propose a wheel spraying device and method.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A wheel spraying device includes a support base and a paint tank fixedly installed on the support base. A support frame is fixedly installed on the support base, and a spray gun is installed on the support frame. A corrugated hose is fixedly connected between the spray gun and the paint tank. It further includes: a first support rod fixedly installed on the support base, and a second support rod coaxially installed on the first support rod. The second support rod has a platform portion for placing the wheel, and a plurality of chutes are equidistantly opened on the second support rod above the platform portion; a plurality of clamping plates are slidably installed in the chutes through driving members and form a clamping cavity for fixing the wheel with the platform portion; a water inlet chamber is fixedly installed on the first support rod, and a top block is slidably connected inside through a sealed bearing; wherein, a water tank is fixedly installed on the support base, and a water inlet pipe is fixedly connected between the water tank and the water inlet chamber.

[0007] In order to push out the clamping plate by the rising top block to initially fix the wheel, preferably, the driving member includes a horizontal rod connected to the clamping plate. The end of the top block away from the water inlet chamber is a frustum portion, and the end of the horizontal rod close to the top block has an inclined surface adapted to the frustum portion and abuts against the frustum portion.

[0008] In order to make the ejected clamping plate flip and combine into a complete annular plate for covering the central hole of the wheel hub. Further, the driving member further includes a support ring installed at the inner top of the second support rod. A first gear is rotatably installed on the support ring. A first rack is fixedly installed at the top end of the frustum portion. A second rack is slidably installed in the second support rod. The first rack and the second rack are both meshed and connected with the first gear, and a second gear is fixedly installed on the horizontal rod. A first tooth groove adapted to the second gear is provided on the inner side wall of the chute. Wherein, a receiving groove is provided on the frustum portion. When the second rack slides down to push the horizontal rod, the horizontal rod is located in the receiving groove.

[0009] Furthermore, the horizontal rod includes a first rod body with an inclined surface and a second rod body fixedly connected to the clamping plate. The first rod body is rotatably connected to the second rod body. The second gear is fixedly installed on the second rod body.

[0010] In order to adsorb the paint mist particles in the air during the spraying operation. Preferably, an air duct is provided inside the first support rod, and a through groove communicating with the internal air duct is provided on the surface. A filter membrane is installed on the groove wall of the through groove. A bent pipe is fixedly installed in the water tank. One end of the bent pipe is hermetically connected to the first support rod. The other end of the bent pipe penetrates out of the water tank and is connected with a negative pressure fan.

[0011] In order to intercept and filter the paint mist through water flow and at the same time be able to wash the paint mist particles attached to the filter membrane. Further, the cross-section of the water inlet chamber is in a concave shape with a hollow interior. Water inlet holes are provided on the inner wall of the water inlet chamber. A water outlet pipe is fixedly installed in the first support rod. The water outlet pipe is located above the through groove. The water outlet pipe communicates with the hollow interior of the water inlet chamber.

[0012] In order to filter and separate the water containing paint mist particles. Further, a filter plate is installed in the water tank. An inlet and a surrounding plate adapted to the inlet are provided on the water tank.

[0013] In order to enable the spray gun to evenly spray the surface of the wheel hub and ensure that appropriate coatings can be obtained on all parts. Further, a third gear is fixedly installed on the second support rod. A motor is fixedly installed on the support seat. A fourth gear is fixedly installed on the output end of the motor. The fourth gear is meshed and connected with the third gear. Wherein, the radius of the third gear is R1, and the radius of the fourth gear is R2, and R1 > R2.

[0014] In order to maintain the effectiveness of the filter membrane, the accumulations on its surface must be removed regularly. Further, a brush is installed on the inner wall of the second support rod.

[0015] In order to adjust the angle of the spray gun as needed so that it can cover different parts of the wheel hub, preferably, the support frame includes a positioning block fixedly installed on the support base, a guide rod fixedly installed on the positioning block, a gun seat slidably installed on the guide rod, a cylinder fixedly installed on the gun seat, the spray gun is installed on the output end of the cylinder through a torsion spring, and a lead screw rotatably installed on the positioning block, the gun seat is threadedly installed on the lead screw, wherein, a fifth gear is fixedly installed on the lead screw, a transmission rod is fixedly installed on the second support rod, and a second tooth groove adapted to the fifth gear is formed on the transmission rod.

[0016] Compared with the prior art, the present invention provides a wheel hub spraying device and method, which have the following beneficial effects:

[0017] 1. For this wheel hub spraying device, as the water volume in the water inlet chamber increases, the top block starts to rise. Its rise will push the driving member, and the driving member makes the clamping plate slide along the chute, gradually approaching the wheel hub and finally forming a stable clamping cavity, ensuring that the wheel hub will not be displaced during the spraying process. During the process of clamping the wheel hub, the clamping plate also plays a role in blocking the central hole of the wheel hub, preventing the paint from entering the central hole area, and ensuring the functionality and assembly accuracy of the wheel hub;

[0018] 2. For this wheel hub spraying device, during the operation of the negative pressure fan, the water in the water inlet chamber will enter the internal hollow through the water inlet hole. A water outlet pipe is fixedly installed inside the first support rod. The water outlet pipe is located above the through groove and is communicated with the internal hollow of the water inlet chamber. In this way, the water in the water inlet chamber will cover the filter membrane, intercept and filter the paint mist, and at the same time can wash the paint mist particles attached to the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a wheel hub spraying device proposed by the present invention;

[0020] Figure 2 It is a schematic diagram of the structures of the first support rod and the second support rod of a wheel hub spraying device proposed by the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the driving member of a wheel hub spraying device proposed by the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure between the transmission rod and the support frame of a wheel hub spraying device proposed by the present invention;

[0023] Figure 5 It is a schematic diagram of the inside of the water inlet chamber of a wheel hub spraying device proposed by the present invention;

[0024] Figure 6Internal schematic diagram of the water tank of a hub spraying device proposed by the present invention;

[0025] Figure 7 Schematic diagram of the connection structure between the clamping plate and the horizontal rod of a hub spraying device proposed by the present invention.

[0026] In the figure: 1. Support base;

[0027] 2. Paint tank;

[0028] 3. Support frame; 301. Positioning block; 302. Guide rod; 303. Gun seat; 304. Cylinder; 305. Lead screw; 306. Fifth gear

[0029] 4. Spray gun; 5. Corrugated hose;

[0030] 6. First support rod; 601. Air duct; 602. Through groove; 603. Filter membrane; 604. Water outlet pipe;

[0031] 7. Second support rod; 701. Platform part; 702. Slide groove; 703. First tooth groove; 704. Third gear; 705. Brush; 706. Transmission rod; 707. Second tooth groove;

[0032] 8. Clamping plate;

[0033] 9. Water inlet chamber; 901. Water inlet hole;

[0034] 10. Top block; 1001. Frustum part; 1002. Accommodation groove;

[0035] 11. Water tank; 1101. Water inlet; 1102. Enclosure; 1103. Filter plate;

[0036] 12. Water inlet pipe;

[0037] 13. Driving part; 1301. Horizontal rod; 1302. Support ring; 1303. First gear; 1304. First rack; 1305. Second rack; 1306. Second gear; 1307. First rod body; 1308. Second rod body;

[0038] 14. Elbow pipe; 15. Negative pressure fan; 16. Motor; 17. Fourth gear. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] Embodiment:

[0042] Referring to Figures 1-7 , a wheel hub spraying device includes a support base 1 and a paint tank 2 fixedly installed on the support base 1. A support frame 3 is fixedly installed on the support base 1, and a spray gun 4 is installed on the support frame 3. A corrugated hose 5 is fixedly connected between the spray gun 4 and the paint tank 2. It further includes: a first support rod 6 fixedly installed on the support base 1, and a second support rod 7 coaxially installed on the first support rod 6. The second support rod 7 has a platform portion 701 for placing the wheel hub. A plurality of chutes 702 are equidistantly opened on the second support rod 7 above the platform portion 701; a plurality of clamping plates 8 are slidably installed in the chutes 702 through a driving member 13 and form a clamping cavity for fixing the wheel hub with the platform portion 701; a water inlet chamber 9 is fixedly installed on the first support rod 6, and a top block 10 is slidably connected inside through a sealing bearing. Preferably, a spring is connected between the top block 10 and the inner bottom surface of the water inlet chamber 9 to facilitate resetting; wherein, a water tank 11 is fixedly installed on the support base 1, and a water inlet pipe 12 is fixedly connected between the water tank 11 and the water inlet chamber 9.

[0043] It should be noted that the number of the clamping plates 8 is four, and the shape of each clamping plate 8 is a quarter-circular ring. After the four clamping plates 8 extend out of the chutes 702, they form a complete circular plate to block the central hole of the wheel hub.

[0044] When the wheel hub spraying device is in use, first place the wheel hub to be sprayed on the platform portion 701 of the second support rod 7. After starting the system, the water in the water tank 11 enters the water inlet chamber 9 through the water inlet pipe 12. As the water volume in the water inlet chamber 9 increases, the top block 10 starts to rise, and its rise will push the driving member 13. The driving member 13 makes the clamping plates 8 slide along the chutes 702, gradually approach the wheel hub and finally form a stable clamping cavity, ensuring that the wheel hub will not be displaced during the spraying process. During the process of clamping the wheel hub, the clamping plates 8 also play a role in blocking the central hole of the wheel hub to prevent the paint from entering the central hole area, ensuring the functionality and assembly accuracy of the wheel hub. The paint is transported from the paint tank 2 to the spray gun 4 through the corrugated hose 5. The design of the corrugated hose 5 allows the spray gun 4 to have a certain flexibility and movement range, facilitating the operator to adjust the position of the spray gun 4 as needed. The spray gun 4 is installed on the support frame 3 and can be moved according to a preset program or manual control to cover all surface areas of the wheel hub.

[0045] The driving member 13 includes a horizontal rod 1301 connected to the clamping plate 8. One end of the top block 10 away from the water inlet chamber 9 is a frustum portion 1001. One end of the horizontal rod 1301 close to the top block 10 has an inclined surface adapted to the frustum portion 1001 and abuts against the frustum portion 1001.

[0046] It should be noted that when the clamping plate 8 is contracted in the second support rod 7 in the original state, it is in a vertical state, reducing the occupied space in the second support rod 7 and making the device more compact.

[0047] Refer to Figure 2 and Figure 3 The driving member 13 further includes a support ring 1302 installed at the top inside the second support rod 7. A first gear 1303 is rotatably installed on the support ring 1302. A first rack 1304 is fixedly installed at the top end of the frustum portion 1001. A second rack 1305 is slidably installed in the second support rod 7. Both the first rack 1304 and the second rack 1305 are meshed with the first gear 1303, and a second gear 1306 is fixedly installed on the horizontal rod 1301. A first tooth groove 703 adapted to the second gear 1306 is provided on the inner side wall of the groove of the chute 702. Wherein, a receiving groove 1002 is provided on the frustum portion 1001. When the second rack 1305 slides down to push the horizontal rod 1301, the horizontal rod 1301 is located in the receiving groove 1002, ensuring the smooth operation of the entire system and avoiding system failures caused by mechanical interference.

[0048] Preferably, the horizontal rod 1301 includes a first rod body 1307 having an inclined surface and a second rod body 1308 fixedly connected to the clamping plate 8. The first rod body 1307 is rotatably connected to the second rod body 1308. The second gear 1306 is fixedly installed on the second rod body 1308.

[0049] With the above structure set, when the water in the water tank 11 enters the water inlet chamber 9 through the water inlet pipe 12, the top block 10 starts to rise. As the top block 10 rises, its frustum part 1001 pushes the horizontal rod 1301 to slide outward, pushing the clamping plate 8 in the vertical state out of the chute 702. As the top block 10 continues to rise, until the first rack 1304 meshes with the first gear 1303. Since the first gear 1303 meshes with the second rack 1305 at the same time, the second rack 1305 will slide downward, pushing the horizontal rod 1301 into the receiving groove 1002, forming a clamping cavity between the clamping plate 8 and the platform part 701. Further, when the horizontal rod 1301 is pushed into the receiving groove 1002 by the second rack 1305, the second gear 1306 on the second rod body 1308 contacts the first tooth groove 703 on the inner wall of the chute 702 and rotates in reverse, turning the clamping plate 8 originally in the vertical state into a horizontal state. In this way, the four clamping plates 8 can be combined into a complete annular plate. In the process of clamping the hub, the clamping plate 8 also plays a role in blocking the central hole of the hub, preventing the paint from entering the central hole area, ensuring the functionality and assembly accuracy of the hub.

[0050] During the spraying process of the hub, a large number of tiny particles will be generated in the space. Therefore, an air passage 601 is opened inside the first support rod 6 for guiding the air flow, and a through groove 602 communicating with the internal air passage 601 is opened on the surface, so that the paint mist generated during the spraying process can be sucked into the air passage 601. A filter membrane 603 is installed on the wall of the through groove 602. The function of the filter membrane 603 is to filter out larger particles to prevent them from entering the air passage 601, thereby protecting the subsequent processing equipment from pollution. A bent pipe 14 is fixedly installed in the water tank 11. One end of the bent pipe 14 is hermetically connected to the first support rod 6, and the other end of the bent pipe 14 penetrates out of the water tank 11 and is connected to a negative pressure fan 15.

[0051] With the above structure set, the negative pressure fan 15 generates negative pressure, and sucks the paint mist and other tiny particles generated during the spraying process into the system through the bent pipe 14 and the air passage 601. The negative pressure fan 15 not only provides power, but also can purify the inhaled waste gas through further processing devices at its outlet, such as activated carbon adsorption, water curtain filtration, etc.

[0052] Refer to Figure 5The cross-section of the water inlet bin 9 is a concave shape with a hollow interior, and a water inlet hole 901 is opened on the inner wall of the water inlet bin 9. In the original state, the water inlet hole 901 is located above the lowest surface of the top block 10. In this way, after the top block 10 rises, the water inside the water inlet bin 9 will enter the internal hollow space through the water inlet hole 901. A water outlet pipe 604 is fixedly installed in the first support rod 6. The water outlet pipe 604 is located above the through groove 602. The water outlet pipe 604 is connected to the internal hollow space of the water inlet bin 9. In this way, the water inside the water inlet bin 9 will cover the filter membrane 603, intercept and filter the paint mist, and at the same time, it can wash away the paint mist particles attached to the filter membrane 603. Furthermore, a filter plate 1103 is installed in the water tank 11, and a water inlet 1101 and a surrounding plate 1102 adapted to the water inlet 1101 are provided on the water tank 11.

[0053] Through the arrangement of the above structure, the water in the water tank 11 enters the elbow 14 through the water inlet pipe 12, and then enters the interior of the water inlet bin 9 through the water outlet pipe 604, gradually filling the water inlet bin 9, causing the top block 10 to start to rise. As the amount of water in the water inlet bin 9 increases, the top block 10 rises due to the buoyancy, and the truncated cone 1001 pushes the horizontal rod 1301 to slide outward, driving the clamping plate 8 to move, and finally forming a clamping cavity to fix the wheel hub, and the negative pressure fan 15 is started, and the negative pressure fan 15 is driven through the elbow 14 and the airway. 601 generates negative pressure, and the paint mist generated during the spraying process is sucked into the air duct 601. After the paint mist is filtered by the filter membrane 603, larger particles are retained, and smaller particles or gases continue to enter the negative pressure fan 15 for subsequent processing. At the same time, as the top block 10 rises, the water inside the water inlet tank 9 will enter the internal hollow space through the water inlet hole 901, and then flow through the outlet pipe 604 onto the filter membrane 603 to intercept and filter the paint mist, and at the same time can wash away the paint mist particles attached to the filter membrane 603.

[0054] A third gear 704 is fixedly mounted on the second support rod 7, a motor 16 is fixedly mounted on the support seat 1, a fourth gear 17 is fixedly mounted on the output end of the motor 16, and the fourth gear 17 is meshedly connected with the third gear 704, wherein the radius of the third gear 704 is R1, and the radius of the fourth gear 17 is R2, and R1>R2.

[0055] Through the arrangement of the above structure, after the motor 16 is started, it drives the fourth gear 17 to rotate, and the fourth gear 17 rotates and drives the third gear 704 meshing therewith to rotate. Since R1>R2, the rotation speed of the third gear 704 is lower but the torque is larger, which is suitable for driving a larger load. The third gear 704 is fixedly mounted on the second support rod 7, so the second support rod 7 rotates accordingly, and the wheel hub is fixed on the platform portion 701 of the second support rod 7 and rotates with the second support rod 7. As the wheel hub rotates, the spray gun 4 can evenly spray the surface of the wheel hub to ensure that all parts can get a proper coating.

[0056] ReferenceFigure 2 While the second support rod 7 rotates under force, a brush 705 is installed on the inner wall of the second support rod 7. The brush 705 can clean the surface of the filter membrane 603 to remove accumulated paint mist particles and other impurities.

[0057] The support frame 3 includes a positioning block 301 fixedly installed on the support base 1 to provide basic support. A guide rod 302 is fixedly installed on the positioning block 301. A gun holder 303 is slidably installed on the guide rod 302. A cylinder 304 is fixedly installed on the gun holder 303. The spray gun 4 is installed on the output end of the cylinder 304 through a torsion spring, allowing the spray gun 4 to have a certain degree of flexibility to adapt to different spraying angle requirements, and a lead screw 305 rotatably installed on the positioning block 301. The gun holder 303 is threadedly installed on the lead screw 305. Among them, a fifth gear 306 is fixedly installed on the lead screw 305, and a transmission rod 706 is fixedly installed on the second support rod 7. A second tooth groove 707 adapted to the fifth gear 306 is provided on the transmission rod 706.

[0058] Through the setting of the above structure, after the motor 16 is started, the second support rod 7 is driven to rotate through the fourth gear 17 and the third gear 704. When the second support rod 7 rotates, the transmission rod 706 fixed on it also rotates accordingly. The second tooth groove 707 on the transmission rod 706 meshes with the fifth gear 306, driving the fifth gear 306 to rotate intermittently. When the fifth gear 306 rotates, it drives the lead screw 305 to rotate. The lead screw 305 rotates to drive the gun holder 303 to perform linear motion along the guide rod 302, and then adjusts the position of the spray gun 4 after each round of hub spraying is completed, finally realizing the full spraying of the hub. The cylinder 304 can adjust the angle of the spray gun 4 as needed so that it can cover different parts of the hub.

[0059] First, place the hub to be sprayed on the platform part 701 of the second support rod 7. After starting the system, the water in the water tank 11 enters the water inlet chamber 9 through the water inlet pipe 12. As the water volume in the water inlet chamber 9 increases, the top block 10 starts to rise.

[0060] One end of the top block 10 away from the water inlet chamber 9 is a frustum part 1001. The frustum part 1001 pushes the horizontal rod 1301 to slide outward, causing the clamping plate 8 to slide along the chute 702 and gradually approach the hub. The four clamping plates 8 form a complete annular plate to form a clamping cavity to fix the hub and block the hub center hole. At the same time, as the top block 10 rises, the water inside the water inlet chamber 9 will enter the internal hollow part through the water inlet hole 901, and then flow onto the filter membrane 603 through the water outlet pipe 604 to intercept and filter the paint mist, and at the same time can wash the paint mist particles attached to the filter membrane 603. The spray gun 4 obtains the paint from the paint tank 2 through the corrugated hose 5 and is installed on the support frame 3. The motor 16 drives the second support rod 7 to rotate through the fourth gear 17 and the third gear 704, driving the hub to rotate.

[0061] Meanwhile, the second tooth groove 707 on the transmission rod 706 meshes with the fifth gear 306 to drive the lead screw 305 to rotate, thereby enabling the gun seat 303 to perform a linear motion along the guide rod 302, adjusting the position of the spray gun 4 to achieve uniform spraying. The negative pressure fan 15 is started, and negative pressure is generated through the elbow pipe 14 and the air duct 601 to suck the paint mist generated during the spraying process into the system. After the paint mist is filtered by the filter membrane 603, larger particles are intercepted, and smaller particles or gas continue to enter the negative pressure fan 15 for subsequent treatment.

[0062] When the second support rod 7 rotates, the brush 705 on the inner wall contacts and cleans the surface of the filter membrane 603 to remove the accumulated paint mist particles and other impurities, ensuring the cleanliness and smoothness of the filter membrane 603. When the spraying is completed, the water supply is stopped, and the top block 10 descends under the action of gravity to release the clamping plate 8, allowing the operator to safely remove the sprayed hub.

[0063] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A wheel hub spraying device, comprising a support base (1) and a paint box (2) fixedly mounted on the support base (1), characterized in that: The support seat (1) is fixedly mounted with a support frame (3), the support frame (3) is mounted with a spray gun (4), a corrugated hose (5) is fixedly connected between the spray gun (4) and the paint box (2), and further comprises: a first support rod (6) fixedly mounted on the support base (1), and a second support rod (7) coaxially mounted on the first support rod (6), the second support rod (7) having a platform portion (701) for placing a wheel hub, and the second support rod (7) above the platform portion (701) having sliding grooves (702) equidistantly formed thereon; The clamping plates (8) are provided in multiple groups and are slidably installed in the slide groove (702) through the driving member (13), and form a clamping cavity for fixing the wheel hub between the clamping plates and the platform portion (701); A water inlet tank (9) fixedly mounted on the first support rod (6), and having a top block (10) slidably connected thereto via a sealed bearing; Wherein, a water tank (11) is fixedly mounted on the support seat (1), and a water inlet pipe (12) is fixedly connected between the water tank (11) and the water inlet bin (9).

2. A wheel hub spraying equipment according to claim 1, characterized in that: The driving member (13) comprises a horizontal rod (1301) connected to the clamping plate (8); the end of the top block (10) away from the water inlet bin (9) is a truncated cone portion (1001); the end of the horizontal rod (1301) close to the top block (10) has an inclined surface adapted to the truncated cone portion (1001) and abuts against the truncated cone portion (1001).

3. A wheel hub spraying equipment according to claim 2, characterized in that: The driving member (13) further comprises a support ring (1302) mounted on the top of the second support rod (7), a first gear (1303) being rotatably mounted on the support ring (1302), a first rack (1304) being fixedly mounted on the top of the truncated cone (1001), a second rack (1305) being slidably mounted in the second support rod (7), the first rack (1304) and the second rack (1305) both being meshed and connected with the first gear (1303), and The second gear (1306) is fixedly mounted on the horizontal rod (1301), and the inner side wall of the slide groove (702) is provided with a first tooth groove (703) adapted to the second gear (1306). Wherein, a receiving groove (1002) is provided on the truncated cone portion (1001), and when the second rack (1305) slides down to push the horizontal rod (1301), the horizontal rod (1301) is located in the receiving groove (1002).

4. A wheel hub spraying equipment according to claim 3, characterized in that: The horizontal rod (1301) comprises a first rod body (1307) having an inclined surface and a second rod body (1308) fixedly connected to the clamping plate (8); the first rod body (1307) is rotatably connected to the second rod body (1308); and the second gear (1306) is fixedly mounted on the second rod body (1308).

5. The wheel hub spraying equipment according to claim 1, characterized in that: An air passage (601) is provided inside the first support rod (6), and a through groove (602) connected to the air passage (601) is provided on the surface of the first support rod (6). A filter membrane (603) is installed on the groove wall of the through groove (602). A curved pipe (14) is fixedly installed inside the water tank (11), one end of the curved pipe (14) is sealedly connected to the first support rod (6), and the other end of the curved pipe (14) passes through the water tank (11) and is connected to a negative pressure fan (15).

6. A wheel hub spraying equipment according to claim 5, characterized in that: The cross section of the water inlet bin (9) is in the shape of a concave character with a hollow interior. A water inlet hole (901) is provided on the inner wall of the water inlet bin (9). A water outlet pipe (604) is fixedly installed inside the first support rod (6). The water outlet pipe (604) is located above the through groove (602). The water outlet pipe (604) is connected to the hollow interior of the water inlet bin (9).

7. A wheel hub spraying equipment according to claim 6, characterized in that: A filter plate (1103) is installed in the water tank (11), and a water inlet (1101) and a surrounding plate (1102) adapted to the water inlet (1101) are provided on the water tank (11).

8. The wheel hub spraying equipment according to claim 1, characterized in that: A third gear (704) is fixedly mounted on the second support rod (7), a motor (16) is fixedly mounted on the support seat (1), a fourth gear (17) is fixedly mounted on the output end of the motor (16), and the fourth gear (17) is meshingly connected with the third gear (704). The radius of the third gear (704) is R1, the radius of the fourth gear (17) is R2, and R1>R2.

9. The wheel hub spraying equipment according to claim 8, characterized in that: A brush (705) is installed on the inner wall of the second support rod (7).

10. The wheel hub spraying equipment according to claim 1, characterized in that: The support frame (3) comprises a positioning block (301) fixedly mounted on the support seat (1), a guide rod (302) fixedly mounted on the positioning block (301), a gun seat (303) slidably mounted on the guide rod (302), a cylinder (304) fixedly mounted on the gun seat (303), the spray gun (4) being mounted on the output end of the cylinder (304) via a torsion spring, and The screw rod (305) mounted on the positioning block (301) is rotated, and the gun seat (303) is threadedly mounted on the screw rod (305). A fifth gear (306) is fixedly mounted on the screw rod (305), a transmission rod (706) is fixedly mounted on the second support rod (7), and a second tooth groove (707) adapted to the fifth gear (306) is provided on the transmission rod (706).

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