A high-precision wheel hub coating device

Abstract

The application discloses a high-precision wheel hub coating equipment and relates to the technical field of automobile part machining.The equipment comprises a guide assembly which is used for guiding atomized liquid during spraying;one set of guide assemblies comprises an air curtain main body, a first guide plate, a flow guide plate and a flexible plate; the guide assembly is improved through structural optimization; in the guide assembly, the first guide plate preliminarily guides the airflow sprayed by the air curtain main body, the flow guide plate dynamically shields the gap and optimizes the airflow path under the action of a driving element, and the flexible plate closely adheres to the wheel hub, fills the gap between the guide assembly and the wheel hub, forms a negative pressure environment together with a suction head, can timely capture unattached atomized liquid and avoid secondary adhesion, and finally, the equipment can solve the core problem of the existing air curtain protection, reduce secondary adhesion of the atomized liquid, improve uneven coating conditions and improve the coating quality of the inner circle of the wheel hub.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically a high-precision wheel hub coating equipment. Background Technology

[0002] As the global automotive industry upgrades towards lightweighting, intelligence, and high-end features, the performance and appearance quality requirements for wheels, as key exterior and structural components of automobiles, continue to rise.

[0003] When painting a designated inner ring, existing coating equipment employs two main protective methods in practice to prevent atomized paint droplets from drifting and adhering to other rings: One method is physical shielding, where customized shielding fixtures are used based on the structural characteristics of different wheel hub specifications. Before painting the inner ring, non-painting areas such as the outer ring and flange surface are physically covered, directly blocking the contact between the atomized paint and these areas. The other method is air curtain protection, where adjustable-angle air curtain devices are installed on both sides of the painting station. During operation, the air curtain devices spray airflow to form a "protective barrier," using the airflow's blocking effect to confine the atomized droplets generated during inner ring painting to the target area, preventing them from spreading to other rings and thus preventing secondary painting and uneven coating issues. However, these methods still have the following problems:

[0004] When existing air curtain devices provide protection, because the inner ring of the wheel hub is designed with an arc or stepped structure, the airflow of the air curtain needs to be close to the surface of the wheel hub to form a barrier. When the airflow hits the curved surface or step of the inner ring, it will generate a reverse rebound airflow due to the obstruction. This airflow will turn back from the surface of the wheel hub towards the air curtain. At this time, some of the atomized droplets generated by the newly sprayed inner ring will be directly pushed back to the already sprayed surface of the wheel hub by the rebound airflow. When the air curtain angle is too steep, the airflow will vertically impact the bottom of the inner ring. After rebounding, it will push the atomized droplets suspended at the bottom back to the newly sprayed coating on the side wall of the inner ring, resulting in some atomized liquid re-adhesion and still causing uneven coating thickness. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision wheel hub coating equipment to solve the problem mentioned in the background art. When existing air curtain devices are used for protection, because the inner ring of the wheel hub is set with an arc or stepped structure, the air curtain airflow needs to be close to the surface of the wheel hub to form a barrier. When the airflow hits the curved surface or step of the inner ring, it will generate a reverse rebound airflow due to the obstruction. This airflow will turn back from the surface of the wheel hub towards the air curtain. At this time, some of the atomized droplets generated by the inner ring just sprayed will be directly pushed back to the already sprayed surface of the wheel hub by the rebound airflow. When the air curtain angle is too steep, the airflow will vertically impact the bottom of the inner ring. After rebounding, it will push the atomized droplets suspended at the bottom back to the just sprayed coating on the side wall of the inner ring, resulting in some atomized liquid re-adhesion and still causing uneven coating thickness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision wheel hub coating equipment, comprising: a guiding component, which guides the atomized liquid during spraying; a set of guiding components includes an air curtain body, a first guiding plate, a diversion plate, and a flexible plate, wherein a connecting plate is provided on the outer surface of the flexible plate, and a plurality of suction heads are fixedly connected to the outer surface of the connecting plate, and a connecting pipe is fixedly connected to the outer surface of the connecting plate, one end of the connecting pipe slidingly through the inner surface wall of the flexible plate and extending to one side; the guiding component guides the airflow sprayed from the air curtain body using the first guiding plate, and simultaneously adjusts the diversion plate to block the gap of the first guiding plate, thereby achieving further optimized guidance of the airflow; the flexible plate fits the wheel hub to fill the gap between the guiding component and the wheel hub, strengthening the sealing of the airflow barrier; during the spraying process, the suction heads can promptly suck atomized particles that do not immediately adhere to the wheel hub into the connecting pipe, effectively preventing secondary adhesion of the atomized liquid.

[0007] Preferably, a first fixing plate is fixedly installed on the outer surface of the first guide plate, a servo motor is fixedly installed on the outer surface of the first fixing plate, the output end of the servo motor slides through the outer surface of the first fixing plate and extends to one side, a connecting rod is fixedly installed on the output end of the servo motor, and a rotating wheel is fixedly installed on the outer surface of the connecting rod.

[0008] Preferably, a set of guide wheels are symmetrically rotatably connected to the inner surface of the first guide plate, and a traction rope is provided on the outer surface of the rotating wheels. One end of the traction rope slides through the outer surface of the first guide plate and extends to one side. The outer surface of the traction rope is slidably connected to the outer surface of the set of guide wheels. The outer surface of the diversion plate is rotatably connected to the inner surface of the first guide plate, and the outer surface of the traction rope is slidably connected to the inner surface of the diversion plate.

[0009] Preferably, the guiding assembly further includes a paint gun and a second guiding plate. Drainage fins are fixedly installed on the outer surface of the drainage plate. First connecting posts are fixedly connected to both outer surfaces of the first guiding plate. A connecting plate is rotatably connected to the outer surface of a set of first connecting posts. Second connecting posts are fixedly connected to both outer surfaces of the second guiding plate. The outer surface of a set of second connecting posts is rotatably connected to the inner wall of the connecting plate.

[0010] Preferably, a second fixing plate is fixedly connected to the outer surface of the first guide plate, and an electric telescopic rod is fixedly installed on the outer surface of the second fixing plate. The telescopic end of the electric telescopic rod slides through the top of the second fixing plate and extends downward. An installation plate is fixedly connected to the outer surface of the second guide plate, and a set of first connecting blocks are symmetrically fixedly installed on the top of the installation plate. A rotating rod is rotatably connected to the inner surface wall of the set of first connecting blocks.

[0011] Preferably, a rotating plate is rotatably connected to the outer surface of the rotating rod, the telescopic end of the electric telescopic rod is fixedly installed to the top of the rotating plate, the bottom of the second guide plate is fixedly installed to the top of the flexible plate, a suction pump is provided on the outer surface of the connecting pipe, a third fixing plate is fixedly installed at the bottom of the suction pump, and the outer surface of the third fixing plate is fixedly connected to the outer surface of the second guide plate.

[0012] Preferably, the outer surface of the paint spray gun is fixedly installed to the outer surface of the air curtain body, and the top of the first guide plate is fixedly installed to the bottom of the air curtain body.

[0013] Preferably, the outer surface of the guide component is provided with a positioning and lifting component;

[0014] The positioning and lifting assembly includes a base plate and a top plate. A set of positioning sensors are symmetrically fixedly installed on the bottom of the base plate. Limiting posts are fixedly connected to the bottom of the top plate near the four corners. An electromagnetic guide rod is fixedly installed on the bottom of the top plate. A rack is fixedly installed on the telescopic end of the electromagnetic guide rod. A gear is meshed with the outer surface of the rack. A connecting shaft is fixedly installed on the inner wall of the gear. A second connecting block is rotatably connected to the outer surface of the connecting shaft. The top of the second connecting block is fixedly connected to the bottom of the top plate.

[0015] Preferably, a first swing plate is fixedly connected to the outer surface of the connecting shaft, a first movable column is rotatably connected to the inner wall of the first swing plate, a second swing plate is rotatably connected to the outer surface of the first movable column, a second movable column is rotatably connected to the inner wall of the second swing plate, and a push block is fixedly connected to one end of the second movable column.

[0016] Preferably, a limiting plate is fixedly connected to the bottom of the push block, the outer surface of a set of limiting posts is slidably connected to the inner surface of the limiting plate, the inner surface of the bottom plate is slidably connected to the outer surface of the paint gun, and the bottom of the limiting plate is fixedly installed to the top of the paint gun.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, improvements are achieved through structural optimization of the guiding component. In the guiding component, the first guiding plate initially guides the airflow ejected from the air curtain body. Under the action of the driving component, the flow guide plate dynamically blocks gaps and optimizes the airflow path, which can effectively suppress the reverse rebound airflow. The flexible plate closely fits the hub, filling the gap between the guiding component and the hub. Combined with the negative pressure environment formed by the suction head, it can capture the unattached atomized liquid in time and avoid its secondary adhesion. Ultimately, this device can specifically solve the core problem of existing air curtain protection, reduce the secondary adhesion of atomized liquid, improve the uneven coating, and enhance the coating quality of the inner ring of the hub.

[0019] 2. In this invention, the positioning and lifting component can drive the entire guiding component to rise and fall smoothly and accurately along a preset trajectory. The longitudinal position of the guiding component can be flexibly adjusted according to the actual height and structural dimensions of the wheel hub to be painted, ensuring that the flexible plate can fit tightly against the surface of the wheel hub, filling the gap between the guiding component and the wheel hub to enhance the air curtain sealing. At the same time, the suction head and the flow guiding structure are precisely aligned with the spraying area of ​​the inner ring of the wheel hub, providing a precise positional basis for air curtain guidance and atomized particle adsorption. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of a high-precision wheel hub coating equipment according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of some guide components in a high-precision wheel hub coating equipment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the other side of the guide assembly in a high-precision wheel hub coating equipment of the present invention;

[0023] Figure 4 This is a planar sectional view of a portion of the guide components in a high-precision wheel hub coating device according to the present invention;

[0024] Figure 5 This is a schematic diagram of another part of the guide assembly in a high-precision wheel hub coating equipment of the present invention;

[0025] Figure 6 This is an enlarged view of the structure of a portion of the guide components in a high-precision wheel hub coating equipment according to the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of some guide components in a high-precision wheel hub coating equipment of the present invention;

[0027] Figure 8 This is a planar sectional view of a portion of the guide components in a high-precision wheel hub coating device according to the present invention;

[0028] Figure 9 This is a schematic diagram of the positioning and lifting assembly on the other side of a high-precision wheel hub coating equipment according to the present invention;

[0029] Figure 10 This is a schematic diagram of a partial positioning and lifting component structure in a high-precision wheel hub coating equipment according to the present invention;

[0030] Figure 11 This is a schematic diagram of the positioning and lifting assembly in a high-precision wheel hub coating equipment according to the present invention.

[0031] In the diagram: 1. Guiding assembly; 101. Spray gun; 102. Air curtain body; 103. First guide plate; 104. First fixing plate; 105. Servo motor; 106. Connecting rod; 107. Rotating wheel; 108. Guide wheel; 109. Traction rope; 110. Drainage plate; 111. Drainage fins; 112. First connecting post; 113. Connecting plate; 114. Second guide plate; 115. Second connecting post; 116. Second fixing plate; 117. Electric telescopic rod; 118. Mounting plate; 119. First connecting block; 120. Rotating rod; 12 1. Rotating plate; 122. Flexible plate; 123. Connecting plate; 124. Suction head; 125. Connecting pipe; 126. Suction pump; 127. Third fixed plate; 2. Positioning and lifting assembly; 201. Base plate; 202. Positioning sensor; 203. Top plate; 204. Electromagnetic guide rod; 205. Rack; 206. Gear; 207. Connecting shaft; 208. Second connecting block; 209. First swing plate; 210. First movable column; 211. Second swing plate; 212. Second movable column; 213. Push block; 214. Limiting plate; 215. Limiting column. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To address the problem of atomized particles escaping due to inadequate air curtain sealing during high-precision wheel hub coating operations, and the resulting secondary adhesion and contamination from these particles, Example 1 is provided. Figure 1 - Figure 8As shown: This invention provides a technical solution for a high-precision wheel hub coating device, comprising: a guiding component 1, which guides the atomized liquid during spraying; a set of guiding components 1 includes an air curtain body 102, a first guiding plate 103, a diversion plate 110, and a flexible plate 122. A connecting plate 123 is provided on the outer surface of the flexible plate 122, and a plurality of suction heads 124 are arranged and fixedly connected to the outer surface of the connecting plate 123. A connecting pipe 125 is fixedly connected to the outer surface of the connecting plate 123, and one end of the connecting pipe 125 slides through the inner wall of the flexible plate 122 and extends to one side. The guiding component 1 uses the first guiding plate 103 to guide the airflow sprayed from the air curtain body 102, while simultaneously adjusting the diversion plate 110 to block the gaps in the first guiding plate 103, thereby achieving... Further optimization and guidance of airflow: Flexible plate 122 fits the hub to fill the gap between guide component 1 and hub, strengthening the sealing of airflow barrier. During spraying, suction head 124 can promptly suck atomized particles that do not immediately adhere to hub into connecting pipe 125, effectively preventing secondary adhesion of atomized liquid. A first fixed plate 104 is fixedly installed on the outer surface of the first guide plate 103. A servo motor 105 is fixedly installed on the outer surface of the first fixed plate 104. The output end of the servo motor 105 slides through the outer surface of the first fixed plate 104 and extends to one side. A connecting rod 106 is fixedly installed on the output end of the servo motor 105. A rotating wheel 107 is fixedly installed on the outer surface of the connecting rod 106. A symmetrical rotating connection is made to the inner surface wall of the first guide plate 103. A set of guide wheels 108, and a traction rope 109 (the traction rope 109 is made of high wear-resistant fluoropolymer-coated steel wire rope or polymer fiber rope) is provided on the outer surface of the rotating wheel 107. One end of the traction rope 109 slides through the outer surface of the first guide plate 103 and extends to one side. The outer surface of the traction rope 109 is slidably connected to the outer surface of the set of guide wheels 108. The outer surface of the diversion plate 110 is rotatably connected to the inner surface wall of the first guide plate 103. The outer surface of the traction rope 109 is slidably connected to the inner surface wall of the diversion plate 110. The guide assembly 1 further includes a paint gun 101 and a second guide plate 114. A diversion fin 111 is fixedly installed on the outer surface of the diversion plate 110. First connecting posts 112 are fixedly connected to both outer surfaces of the first guide plate 103. The outer surfaces of the first connecting posts 112 are rotatably connected to connecting plates 113. The outer surfaces of both sides of the second guide plate 114 are fixedly connected to second connecting posts 115. The outer surfaces of the second connecting posts 115 are rotatably connected to the inner walls of the connecting plates 113. The outer surface of the first guide plate 103 is fixedly connected to a second fixing plate 116. An electric telescopic rod 117 is fixedly installed on the outer surface of the second fixing plate 116. The telescopic end of the electric telescopic rod 117 slides through the top of the second fixing plate 116 and extends downwards. The outer surface of the second guide plate 114 is fixedly connected to a mounting plate 118. A set of first connecting blocks 119 are symmetrically fixedly installed on the top of the mounting plate 118. A rotating rod 120 is rotatably connected to the inner walls of the set of first connecting blocks 119.A rotating plate 121 is rotatably connected to the outer surface of the rotating rod 120. The telescopic end of the electric telescopic rod 117 is fixedly installed to the top of the rotating plate 121. The bottom of the second guide plate 114 is fixedly installed to the top of the flexible plate 122. A suction pump 126 is provided on the outer surface of the connecting pipe 125. A third fixing plate 127 is fixedly installed to the bottom of the suction pump 126. The outer surface of the third fixing plate 127 is fixedly connected to the outer surface of the second guide plate 114. The outer surface of the paint spray gun 101 is fixedly installed to the outer surface of the air curtain body 102. The top of the first guide plate 103 is fixedly installed to the bottom of the air curtain body 102.

[0034] The overall effect of Embodiment 1 is that when this equipment is used for wheel hub painting, the air curtain body 102 is first activated (the air curtain body 102 integrates a high-pressure fan or is connected to an external compressed air source through pipelines, and is equipped with a pressure regulating valve and flow meter to generate and regulate a stable and clean air curtain airflow). The air curtain body 102 quickly sprays out a continuous and stable airflow, which forms a dense air curtain in the work area, directly creating a surrounding barrier to shield the paint spray gun 101. The core function of this air curtain is to pre-establish a protective boundary between the paint spray gun 101 and the non-painted area, preventing atomized paint particles from diffusing to non-target areas such as the outer ring of the wheel hub and the flange surface during subsequent painting, thus laying the foundation for precise painting. At this time, if Figure 3 and Figure 4As shown, the airflow ejected from the air curtain body 102 is not random, but flows steadily downward along the trajectory of the first guide plate 103 under the guidance and constraint of the first guide plate 103, ensuring that the airflow can accurately cover the spraying target area of ​​the inner ring of the hub. To prevent the airflow from leaking from the gaps in the first guide plate 103, the servo motor 105 on the first fixed plate 104 needs to be activated. After the servo motor 105 is activated, its output end will drive the connecting rod 106 to rotate. Since the connecting rod 106 is fixedly connected to the rotating wheel 107, the rotating wheel 107 will rotate synchronously with the connecting rod 106. During the rotation of the rotating wheel 107, the traction rope 109 originally wrapped around the wheel body is gradually loosened. At this time, the traction rope 109 moves slowly downward along the preset path under the support and guidance of the guide wheel 108. At the same time, the flow guide plate 110 and the first guide plate 103 are connected by a rotating connector. In the active connection, after the traction rope 109 loses its upward pulling force on the guide plate 110, the guide plate 110, with the help of its own weight and the cooperation of the rotating connector, rotates downward around the connector and finally falls smoothly onto the top of the second guide plate 114. During this process, the surface of the guide plate 110 can completely cover the gap between the first guide plate 103 and the second guide plate 114, forming a seamless flow channel, allowing the airflow to continue to flow steadily downward along the surface of the guide plate 110. Furthermore, the flow-guiding fins 111 on the surface of the guide plate 110 can further regulate the airflow, dividing the potentially dispersed airflow into multiple parallel, regulated airflows, preventing eddies or local diffusion during airflow, and ensuring the stable barrier effect of the air curtain. When it is necessary to adjust the angle of the second guide plate 114 according to the inner ring arc shape or stepped structure of the wheel hub to be painted, to adapt to the flow guidance requirements of different wheel hub specifications, such as... Figure 5 and Figure 6As shown, when the electric telescopic rod 117 installed on the second fixed plate 116 is activated, the telescopic end of the electric telescopic rod 117 drives the rotating plate 121 to rise or fall synchronously. The inner wall of the rotating plate 121 is rotatably connected to the outer surface of the rotating rod 120, and the two ends of the rotating rod 120 are movably connected to the inner wall of the first connecting block 119 through bearings. Therefore, the rising and falling of the rotating plate 121 will drive the rotating rod 120 to rotate flexibly around the bearing axis within the first connecting block 119. When the rotating plate 121 rises or falls, it will drive the mounting plate 118 to swing up and down synchronously. The swing of the mounting plate 118 is transmitted to the second guide plate 114, causing the second guide plate 114 to rotate around... The connection point is adjusted at an angle until it perfectly matches the inner ring structure of the wheel hub. During the rotation of the second guide plate 114, the second connecting post 115 connected to its side moves along with it. The cooperation of the first connecting post 112 and the connecting plate 113 limits the swing range of the second guide plate 114, preventing excessive angle adjustment from causing the airflow to deviate from the target area, ensuring precise and controllable angle adjustment. After the second guide plate 114 is adjusted to the correct angle, the positioning and lifting assembly 2 is activated, causing the entire guide assembly 1 to slowly move downwards until the flexible plate 122 at the bottom of the guide assembly 1 is in close contact with the wheel hub surface. Figure 7 and Figure 8 As shown, the flexible plate 122 is made of a wear-resistant material with good elasticity, which can adapt to the arc or irregular contour of the wheel hub surface and tightly fill the tiny gap between the guide component 1 and the wheel hub. This not only prevents the air curtain airflow from escaping from the gap, further enhancing the sealing of the air curtain barrier, but also prevents the rigid components from directly contacting the wheel hub surface and causing scratches, thus protecting the appearance of the wheel hub. Subsequently, the suction pump 126 installed on the top of the third fixed plate 127 is started (the suction pump 126 is an explosion-proof vortex fan or vacuum generator, whose inlet can be connected to the connecting pipe 125 through a pipeline, and its outlet is connected to a dust collection and filter box (not shown in the figure). The negative pressure at the suction head 124 can be controlled by adjusting the frequency of the fan or the air source pressure of the vacuum generator). When the suction pump 126 is working, it transmits the negative pressure to the connecting plate 123 through the pipeline. The suction heads 124, evenly distributed on the outer surface of the connecting plate 123, generate a stable suction force. The suction force can be adjusted according to the requirements of the spraying process, ensuring efficient adsorption of particles without affecting normal spraying. The coverage area of ​​these suction heads 124 corresponds precisely to the area above the wheel hub where atomized particles are easily suspended. This allows for the timely adsorption and collection of suspended atomized particles that do not immediately adhere to the wheel hub surface during spraying. The adsorbed atomized particles enter the channel inside the connecting plate 123 through the suction heads 124 and are then transported to the connecting pipe 125. The inner wall of the connecting pipe 125 is smoothed to reduce particle transport resistance. Finally, these atomized particles are transported in an orderly manner to the subsequent recycling or treatment device, preventing suspended particles from accumulating in the work area and causing secondary adhesion. Once all the above preparations are complete and the operating status of each component is stable, such as... Figure 2 and Figure 3 As shown, the paint spray gun 101 is started to paint the inner ring of the wheel hub. During the painting process, the air curtain continuously forms a stable barrier to constrain the range of atomized particles, the flow guiding structure ensures accurate airflow guidance, and the suction head 124 adsorbs suspended particles in real time. Under the action of the guiding component 1, the core problem of existing air curtain protection can be solved, the secondary adhesion of atomized liquid can be reduced, the unevenness of the coating can be improved, and the coating quality of the inner ring of the wheel hub can be improved.

[0035] Preferably, following the technical solution described in Embodiment 1 above, to solve the problem of accurately coating the wheel hub with the paint spray gun 101, a solution is proposed, specifically, as follows: Figure 9 - Figure 11 As shown: A positioning and lifting assembly 2 is provided on the outer surface of the guide assembly 1; the positioning and lifting assembly 2 includes a base plate 201 and a top plate 203. A set of positioning sensors 202 (the positioning sensors 202 are through-beam photoelectric sensors or laser rangefinders, and their signal output terminals are connected to a programmable logic controller or an industrial computer) are symmetrically fixedly installed on the bottom of the base plate 201. This allows the electromagnetic guide rod 204, servo motor 105, electric telescopic rod 117, suction pump 126, and paint gun 101 to be started, stopped, sequenced, and controlled according to a preset program based on the sensor signals, thus achieving fully automatic operation. Limiting posts 215 are fixedly connected to the bottom of the top plate 203 near the four corners. An electromagnetic guide rod 204 is fixedly installed on the bottom of the top plate 203. A rack 205 is fixedly installed on the telescopic end of the electromagnetic guide rod 204. A gear 206 is meshed with the outer surface of the rack 205. A connecting shaft 207 is fixedly installed on the inner wall of wheel 206. A second connecting block 208 is rotatably connected to the outer surface of the connecting shaft 207. The top of the second connecting block 208 is fixedly connected to the bottom of the top plate 203. A first swing plate 209 is fixedly connected to the outer surface of the connecting shaft 207. A first movable column 210 is rotatably connected to the inner wall of the first swing plate 209. A second swing plate 211 is rotatably connected to the outer surface of the first movable column 210. A second movable column 212 is rotatably connected to the inner wall of the second swing plate 211. A push block 213 is fixedly connected to one end of the second movable column 212. A limit plate 214 is fixedly connected to the bottom of the push block 213. The outer surface of a set of limit columns 215 is slidably connected to the inner wall of the limit plate 214. The inner wall of the bottom plate 201 is slidably connected to the outer surface of the paint gun 101. The bottom of the limit plate 214 is fixedly installed to the top of the paint gun 101.

[0036] The overall effect of implementation 2 is that, before the painting operation is carried out on the wheel hub, such as Figure 9As shown, the external conveyor belt is first activated, which slowly moves the wheel hub to be painted until it reaches the positioning sensor 202 at the bottom of the base plate 201. The core function of the positioning sensor 202 is to monitor the position of the wheel hub in real time, ensuring that the wheel hub can accurately stop at the designated position for the painting operation. When the positioning sensor 202 detects that the wheel hub has completely moved to the target position, it immediately sends a position confirmation signal to the external controller. After receiving the signal, the external controller quickly triggers and activates the electromagnetic guide rod 204. The telescopic end of the electromagnetic guide rod 204 extends or retracts accordingly, thereby driving the rack 205 fixedly connected to it to move along the preset trajectory. Since the rack 205 and the gear 206 are in a meshed state, the movement of the rack 205 will drive the gear 206 to rotate around its own axis through the tooth transmission action. Figure 10 As shown, when gear 206 rotates, it synchronously drives the connecting shaft 207, which is assembled inside the second connecting block 208, to rotate as well. During the rotation of the connecting shaft 207, it drives the first swing plate 209, which is fixedly connected to it, to swing around the axis of the connecting shaft 207. When the first swing plate 209 swings, the first movable column 210 connected to its end will be displaced with the swinging action, thereby pushing the second swing plate 211 to move synchronously. Under the swinging force of the first swing plate 209, the second swing plate 211 gradually flips downward. As the second swing plate 211 descends, the second movable column 212 connected to its bottom will drive the push block 213 to move downward together. The push block 213 is fixedly connected to the limiting plate 214, so the descent of the push block 213 will directly drive the limiting plate 214 to descend synchronously. Figure 11 As shown, during the descent of the limiting plate 214, it will further drive the connected guide component 1 to descend as well, until the guide component 1 is adjusted to the painting height that matches the wheel hub. At this time, there is no need for the guide component 1 and the positioning lifting component 2 to rotate; the painting operation can be started solely by the external rotating device under the wheel hub. This ensures the stability of the guide component 1 during the painting process, guaranteeing the accuracy of airflow guidance and atomized particle adsorption. In addition, during the entire upward or downward movement of the limiting plate 214, the sliding cooperation and structural limiting effect between the limiting post 215 and the limiting plate 214 can achieve [certain benefits]. The positioning and lifting component 2 ensures the stability of the lifting and lowering action of the limiting plate 214, preventing the guide component 1 from shifting due to the shaking of the limiting plate 214, and further ensuring the accuracy and stability of subsequent painting operations. Under the action of the positioning and lifting component 2, the longitudinal position of the guide component 1 can be flexibly adjusted according to the actual height and structural dimensions of the painted wheel hub, ensuring that the flexible plate 122 can be tightly attached to the surface of the wheel hub, filling the gap between the guide component 1 and the wheel hub to enhance the air curtain sealing, while making the suction head 124 and the flow guiding structure accurately aligned with the spraying area of ​​the inner ring of the wheel hub, providing a precise positional basis for air curtain flow and atomized particle adsorption.

[0037] The working principle of the entire equipment is as follows: Before painting the wheel hub, the external conveyor belt is started, which moves the wheel hub to be painted to the positioning sensor 202 at the bottom of the base plate 201. After the positioning sensor 202 detects that the wheel hub has arrived at the designated station, it sends a signal to the external controller. After receiving the signal, the controller starts the electromagnetic guide rod 204. Its telescopic end drives the rack 205 to move. The rack 205 drives the gear 206 to rotate by meshing with the gear 206, which in turn drives the connecting shaft 207 in the second connecting block 208 to rotate. The rotation of the connecting shaft 207 causes the first swing plate 209 to swing around the shaft, pushing the second swing plate 211 down via the first movable column 210. The second swing plate 211 then drives the push block 213 and the limiting plate 214 down via the second movable column 212. The limiting column 215 ensures the smooth lifting and lowering of the limiting plate 214, ultimately driving the guide assembly 1 down to a height that matches the wheel hub. Painting can be prepared solely by the rotation of the wheel hub, without requiring the guide assembly 1 and the positioning lifting assembly 2 to rotate. Then, the air curtain body 102 is activated, spraying out airflow to form... A dense air curtain surrounding the paint spray gun 101 prevents the diffusion of atomized particles. The airflow flows stably under the guidance of the first guide plate 103. To prevent airflow leakage from the gaps in the first guide plate 103, the servo motor 105 is activated, driving the connecting rod 106 and the rotating wheel 107 to rotate. The traction rope 109 is released, and the guide plate 110, aided by gravity and rotation, falls to the top of the second guide plate 114, blocking gaps and regulating airflow through the guide fins 111. When the angle of the second guide plate 114 needs adjustment, the electric telescopic rod 117 is activated to drive the rotating wheel... The movable plate 121, rotating rod 120 and mounting plate 118 swing, so that the second guide plate 114 adapts to the wheel hub structure. The first connecting column 112 and connecting plate 113 limit its swing range. The positioning lifting component 2 drives the guide component 1 to descend. The flexible plate 122 fits the wheel hub, which not only seals to prevent air leakage but also protects the appearance of the wheel hub. Then the suction pump 126 is started, so that the suction head 124 adsorbs the unattached atomized particles and transports them to the subsequent processing through the connecting pipe 125. After all preparations are complete, the paint gun 101 is started to paint the wheel hub.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision wheel hub coating apparatus characterized by comprising: The utility model relates to a kind of spray booth, including: Guiding component (1) for guiding atomized liquid when spraying; A set of guiding component (1) includes air curtain body (102), first guide plate (103), flow guide plate (110) and flexible plate (122), the outer surface of the flexible plate (122) is provided with intercommunicating plate (123), the outer surface of the intercommunicating plate (123) is arranged and fixed intercommunication with several suction heads (124), the outer surface of the intercommunicating plate (123) is fixed intercommunication with connecting pipe (125), one end of the connecting pipe (125) is slidably penetrated through the inner surface wall of flexible plate (122) and extends to one side, guiding component (1) is guided to the airflow that air curtain body (102) sprays using first guide plate (103), while adjusting flow guide plate (110) to shield the gap of first guide plate (103), further optimized guiding of airflow is realized, flexible plate (122) is attached hub and fills the gap between guiding component (1) and hub, the sealing of airflow barrier is strengthened, in the process of spraying, suction head (124) can suck into connecting pipe (125) in time atomized particles not first time attached to hub, effectively avoid secondary attachment of atomized liquid; The guiding component (1) further includes spray gun (101), second guide plate (114), the outer surface of the flow guide plate (110) is fixedly installed with flow guide fin (111), the outer surface of both sides of the first guide plate (103) is fixedly connected with first connecting column (112), the outer surface of a set of first connecting column (112) is rotatably connected with connecting plate (113), the outer surface of both sides of the second guide plate (114) is fixedly connected with second connecting column (115), the outer surface of a set of second connecting column (115) is rotatably connected with the inner surface wall of connecting plate (113); The outer surface of the first guide plate (103) is fixedly connected with second fixed plate (116), the outer surface of the second fixed plate (116) is fixedly installed with electric telescopic rod (117), the telescopic end of the electric telescopic rod (117) is slidably penetrated through the top of second fixed plate (116) and extends to below, the outer surface of the second guide plate (114) is fixedly connected with mounting plate (118), the top of the mounting plate (118) is symmetrically fixedly installed with a set of first link block (119), the inner surface wall of a set of first link block (119) is rotatably connected with rotating rod (120); The outer surface of the rotating rod (120) is rotatably connected with rotating plate (121), the telescopic end of the electric telescopic rod (117) and the top of rotating plate (121) are fixedly installed, the bottom of the second guide plate (114) and the top of flexible plate (122) are fixedly installed, the outer surface of the connecting pipe (125) is provided with suction pump (126), the bottom of the suction pump (126) is fixedly installed with third fixed plate (127), the outer surface of the third fixed plate (127) is fixedly connected with the outer surface of the second guide plate (114).

2. The high-precision wheel hub coating apparatus according to claim 1, characterized in that: The outer surface of the first guide plate (103) is fixedly installed with a first fixed plate (104), the outer surface of the first fixed plate (104) is fixedly installed with a servo motor (105), the output end of the servo motor (105) is slidably penetrated through the outer surface of the first fixed plate (104) and extends to one side, the output end of the servo motor (105) is fixedly installed with a connecting rod (106), and the outer surface of the connecting rod (106) is fixedly installed with a rotating wheel (107).

3. The high-precision wheel hub coating apparatus according to claim 2, characterized in that: The inner surface wall of the first guide plate (103) is symmetrically and rotationally connected with a group of guide wheels (108), the outer surface of the rotating wheel (107) is provided with a traction rope (109), one end of the traction rope (109) is slidably penetrated through the outer surface of the first guide plate (103) and extends to one side, and the outer part of the traction rope (109) is slidably connected with the outer part of the group of guide wheels (108), the outer surface of the guide plate (110) is rotationally connected with the inner surface wall of the first guide plate (103), and the outer surface of the traction rope (109) is slidably connected with the inner surface wall of the guide plate (110).

4. The high-precision wheel hub coating apparatus according to claim 1, characterized in that: The outer surface of the paint spraying gun (101) is fixedly installed with the outer surface of the air curtain body (102), and the top of the first guide plate (103) is fixedly installed with the bottom of the air curtain body (102).

5. The high-precision wheel hub coating apparatus according to claim 1, characterized in that: The outer surface of the guide assembly (1) is provided with a positioning lifting assembly (2); The positioning lifting assembly (2) comprises a bottom plate (201) and a top plate (203), a group of positioning sensors (202) are symmetrically and fixedly installed at the bottom of the bottom plate (201), limit columns (215) are fixedly connected to the bottom of the top plate (203) near four corners, an electromagnetic guide rod (204) is fixedly installed at the bottom of the top plate (203), a rack (205) is fixedly installed at the telescopic end of the electromagnetic guide rod (204), the outer surface of the rack (205) is meshingly connected with a gear (206), the inner surface wall of the gear (206) is fixedly installed with a connecting shaft (207), the outer surface of the connecting shaft (207) is rotationally connected with a second connecting block (208), and the top of the second connecting block (208) is fixedly connected with the bottom of the top plate (203).

6. The high-precision wheel hub coating apparatus according to claim 5, characterized in that: A first swing plate (209) is fixedly connected to the outer surface of the connecting shaft (207), a first movable column (210) is rotationally connected to the inner surface wall of the first swing plate (209), a second swing plate (211) is rotationally connected to the outer surface of the first movable column (210), a second movable column (212) is rotationally connected to the inner surface wall of the second swing plate (211), and a push block (213) is fixedly connected to one end of the second movable column (212).

7. A high precision wheel hub coating apparatus as defined in claim 6, wherein: The bottom of the push block (213) is fixedly connected with a limiting plate (214), the outer surface of a group of the limit columns (215) is slidably connected with the inner surface wall of the limiting plate (214), the inner surface wall of the bottom plate (201) is slidably connected with the outer surface of the paint spraying gun (101), and the bottom of the limiting plate (214) is fixedly installed with the top of the paint spraying gun (101).

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