Methods and processing systems for multi-color spraying

Abstract

This disclosure provides a method and processing system for multi-color spraying, belonging to the field of automotive technology. In this disclosure, in the second area, a colored clear coat is used instead of the topcoat and clear coat, requiring only one application of the colored clear coat, reducing the number of applications and simplifying the spraying process.

Description

[0001] This disclosure claims priority to Chinese Patent Application No. 202421678397.5, filed on July 15, 2024, entitled "Method and Processing System for Color Spraying", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of automotive technology, and in particular to a method and processing system for multi-color spraying. Background Technology

[0003] With the development of automotive technology, people's lives have become closely connected with cars. During the car production process, it is necessary to paint the car surface. Some cars need to be painted with multiple colors (called color matching), which requires painting according to color zones.

[0004] In related technologies, the areas to be painted are first masked, then clear varnish and topcoat are sprayed on the large areas, then the large areas are masked again, and then clear varnish and topcoat are sprayed on the areas to be painted.

[0005] Using the above method for color spraying requires multiple coats, making the process quite complicated. Summary of the Invention

[0006] This disclosure provides a method and system for multi-color spraying, which can solve the aforementioned technical problems existing in related technologies. The technical solution is as follows:

[0007] In a first aspect, a method for multi-color spraying is provided, the method being applied to a target vehicle, the method comprising:

[0008] Apply a base coat and a mid-coat coat to the target vehicle;

[0009] Mask the first area, and spray colored varnish on the second area;

[0010] The second area is masked, and varnish and topcoat are sprayed onto the first area.

[0011] In one possible implementation, the first region is the main region, and the second region is the color-coded region.

[0012] In one possible implementation, the application of a base coat and an intermediate coat to the target vehicle includes:

[0013] The target vehicle is coated with a base coat to obtain a target vehicle with the base coat applied.

[0014] The target vehicle that has completed the primer coating is dried to obtain the target vehicle that has completed the first drying process.

[0015] A mid-coat paint is sprayed onto the target vehicle after the first drying is completed, resulting in a target vehicle with the mid-coat paint completed.

[0016] The target vehicle that has completed the intermediate coat coating is then dried to obtain the target vehicle that has completed the second drying process.

[0017] In one possible implementation, the masking of the first area and the spraying of a colored varnish on the second area include:

[0018] Cover the first area with a covering material;

[0019] A colored clear coat is sprayed onto the second area to obtain the target vehicle with the second area sprayed.

[0020] Let the colored varnish dry;

[0021] Remove the shielding material;

[0022] The target vehicle is then dried to obtain the target vehicle after the third drying process.

[0023] In one possible implementation, the masking of the second area and the spraying of a clear coat and a top coat on the first area include:

[0024] The second area is covered with a masking material;

[0025] Apply clear coat and top coat to the first area to obtain the target vehicle with the first area sprayed.

[0026] Let the varnish and the topcoat dry;

[0027] Remove the shielding material;

[0028] The target vehicle is dried to obtain the target vehicle after the fourth drying process.

[0029] In one possible implementation, after spraying clear varnish and topcoat onto the first area, the method further includes:

[0030] The target vehicle is inspected for painting results to identify painting defects;

[0031] The paint defects of the target vehicle are repaired by applying a new coat.

[0032] In a second aspect, a processing system is provided for performing the methods described above, the processing system comprising a processing chamber (1), a workbench (2), a spraying assembly (3), and a controller (4).

[0033] The stand (2) is located at the bottom of the processing chamber (1), and the stand (2) is used to support the target vehicle;

[0034] The spraying assembly (3) is located inside the processing chamber (1) and is electrically connected to the controller (4).

[0035] In one possible implementation, the stand (2) is a fixed stand.

[0036] In one possible implementation, the platform (2) includes a fixed base (21) and a rotating platform (22), the rotating platform (22) being located above and connected to the fixed base (21), the rotating platform (22) being rotatable relative to the fixed base (21), and the rotating platform (22) being used to carry the target vehicle.

[0037] In one possible implementation, the spraying assembly (3) includes a ground track (31), a robotic arm (32), a support (33), a spraying device (34), and multiple nozzles (35).

[0038] The ground track (31) is a rectangular track with rounded corners. The ground track (31) is located at the bottom of the processing room (1) and surrounds the frame (2).

[0039] The first end (32a) of the robotic arm (32) is connected to the ground track (31) and can move on the ground track (31); the second end (32b) of the robotic arm (32) is connected to the bracket (33); and the robotic arm (32) is electrically connected to the controller (5).

[0040] The spraying equipment (34) is located inside the processing chamber (1), and the spraying equipment (34) is electrically connected to the controller (5);

[0041] The plurality of nozzles (35) are respectively connected to the bracket (33), the plurality of nozzles (35) are respectively connected to the spraying equipment (34) through pipes, and the plurality of nozzles (35) are respectively electrically connected to the controller (5).

[0042] In one possible implementation, the spraying assembly (3) further includes a camera (36) connected to the bracket (33) and electrically connected to the controller (4), the camera (36) being oriented in the same direction as the plurality of spray nozzles;

[0043] The controller (4) is used for:

[0044] During the spraying process, based on the image of the target vehicle captured by the camera (36), the relative pose information of the multiple nozzles (35) and the target vehicle is determined, and the robotic arm (32) is controlled based on the relative pose information.

[0045] In one possible implementation, the spraying assembly (3) further includes a cleaning assembly (37) connected to the bracket (33) and electrically connected to the controller (4);

[0046] The controller (4) is used for:

[0047] The image captured by the camera (36) is acquired according to the specified detection cycle. The image is input into the camera occlusion determination model to obtain the occlusion determination result of the camera (36). If the occlusion determination result is that there is occlusion, the cleaning component (37) is controlled to clean the camera (36).

[0048] In one possible implementation, the cleaning component (37) is a paint solvent spray gun or a camera wiping mechanism.

[0049] In this disclosure, in the second area, a colored varnish is used instead of the topcoat and varnish, requiring only one application of the colored varnish, reducing the number of applications and simplifying the application process. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of a processing system provided in an embodiment of this disclosure;

[0052] Figure 2 This is a schematic diagram of the structure of a stand 2 provided in an embodiment of this disclosure;

[0053] Figure 3 This is a schematic diagram of the structure of a processing system provided in an embodiment of this disclosure;

[0054] Figure 4 This is a partial structural schematic diagram of a spraying assembly 3 provided in an embodiment of this disclosure;

[0055] Figure 5 This is a schematic diagram of a color-coating process provided in an embodiment of this disclosure;

[0056] Figure 6 This is a schematic diagram of a process for spraying coating in a second region according to an embodiment of the present disclosure;

[0057] Figure 7 This is a schematic diagram of a process for spraying coating in a first region according to an embodiment of the present disclosure.

[0058] Figure label:

[0059] 1. Processing room;

[0060] 2. Stand; 21. Fixed base; 22. Rotating table;

[0061] 3. Spraying components; 31. Ground track; 32. Robotic arm; 33. Support frame; 34. Spraying equipment; 35. Multiple spray nozzles; 36. Camera; 37. Cleaning components;

[0062] 4. Controller. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0064] With the development of automotive technology, car colors have become more diverse, with some cars featuring multiple colors. This necessitates painting in separate color zones. One technique involves first masking the areas where colors are to be applied, then spraying clear coat and topcoat over the larger areas. This process is repeated, masking the larger areas again, and then spraying clear coat and topcoat over the areas where colors are to be applied. This method requires multiple coats, making the painting process quite cumbersome.

[0065] In view of the above-mentioned technical problems, this disclosure provides a method for multi-color spraying, wherein the main body executing the method is a processing system, such as... Figure 1 As shown, the processing system includes a processing chamber 1, a frame 2, a spraying assembly 3, and a controller 4.

[0066] Processing chamber 1 is capable of accommodating at least one vehicle. It is used to house and process the target vehicle, allowing the vehicle requiring two-tone painting to be placed inside for subsequent painting. A workbench 2 is located at the bottom of processing chamber 1, and its dimensions are larger than the footprint of a typical vehicle. The workbench 2 is used to support the target vehicle. The workbench 2 can be a fixed workbench. For example... Figure 2 As shown, the frame 2 includes a fixed base 21 and a rotating platform 22. The rotating platform 22 is located above and connected to the fixed base 21, and can rotate relative to the fixed base 21. The rotating platform 22 is used to support the target vehicle. The target vehicle to be painted is placed on the rotating platform 22, and the controller 4 can control the rotating platform 22 to rotate about its center as a fixed point (e.g., ...). Figure 2Point A in the table is equidistant from all edges of the rotary table 22.

[0067] In another possible configuration, the platform 2 may include a track and a sliding platform. The sliding platform is located above and connected to the track, and can slide along the track. The sliding platform is used to support the target vehicle. The target vehicle to be painted is placed on the sliding platform, and the controller 4 can control the sliding platform to slide along the track.

[0068] The spraying assembly 3 is located inside the processing chamber 1 and is electrically connected to the controller 4. For example... Figure 3 As shown, the spraying assembly 3 includes a ground track 31, a robotic arm 32, a support 33, a spraying device 34, and multiple spray nozzles 35. Figure 3 Only one nozzle 35 is shown in the drawing. The case of multiple nozzles 35 is similar and will not be described in detail.

[0069] Ground track 31 is a rectangular track or a circular track with rounded corners. Figure 3 (Taking a rectangular track as an example), the ground track 31 is located at the bottom of the processing room 1 and surrounds the platform 2, with the center of the ground track 31 at the center of the platform 2. The ground track is slightly larger than the footprint of the target vehicle.

[0070] The first end 32a of the robotic arm 32 is connected to the ground track 31 and can move on the ground track 31. The second end 32b of the robotic arm 32 is connected to the support 33. The robotic arm 32 is electrically connected to the controller 4. The controller 4 can control the robotic arm 32 to move along the ground track 31, thereby achieving the spraying of the entire body of the target vehicle. The robotic arm 32 can also be a multi-jointed robotic arm, for example... Figure 3 Take a two-jointed robotic arm as an example. During the painting process, the angle between the two robotic arms can be changed, thereby changing the painting position.

[0071] The spraying equipment 34 is located inside the processing chamber 1 and is electrically connected to the controller 4. The spraying equipment 34 is connected to the robotic arm 32 and, via pipes, to the nozzle 35. The spraying equipment 34 can be either a spray gun type or a paint pump type. Spray gun type sprayers typically spray the coating material through the nozzle 35, while paint pump type sprayers typically use a spray pump to extract the coating material from a container and then spray it through the nozzle 35.

[0072] Multiple nozzles 35 are connected to a bracket 33, which supports the nozzles 35 and other components. The bracket 33 is typically a rectangular or circular sheet-like support fixed to one end of the robotic arm 32. Each nozzle 35 is connected to a painting device 34 via pipes and is electrically connected to a controller 4. The painting device 34 is used to load paint. The operator loads paint into the device, and during painting, the paint flows from the device 34 to the nozzles 35 through the pipes and is then sprayed out from the nozzles. Each time painting is performed, the operator can select the number of nozzles 35, thereby controlling the on / off state of the nozzles 35 via the controller 4. For example, if there are two nozzles 35, the operator can choose to use one nozzle 35 and not the other, or the operator can choose to use both nozzles 35 simultaneously to paint the target vehicle.

[0073] In one possible implementation, for example Figure 4 As shown, the spraying assembly 3 also includes a camera 36, ​​which can be mounted on the bracket 33. There can be one or more cameras 36. In the case of one camera 36, ​​one nozzle 35 corresponds to one camera 36. In the case of multiple cameras 36, one nozzle 35 corresponds to multiple cameras 36. In the case of multiple cameras 36, they can be evenly distributed on the bracket 33, or they can be distributed around the nozzles 35 in a circumferential manner. Figure 4 Taking camera 36 as an example, other cases are similar and will not be described in detail. Camera 36 is connected to bracket 33 and electrically connected to controller 5. The orientation of camera 36 is the same as the orientation of its corresponding spray head 35. Controller 4 can control camera 36 to take a picture after each spraying is completed, or it can control camera 36 to record video during each spraying process. Camera 36 sends the captured photos or videos to controller 4, which then sends them to a device with a display component. Workers can view the photos or videos on this device to monitor the spraying process.

[0074] The camera can also be a rotatable camera, and it can be set to rotate with the spraying position of the corresponding nozzle 35.

[0075] During the painting process, controller 4 determines the relative pose information of multiple nozzles 35 to the target vehicle based on images (photos or videos) captured by camera 36, ​​and controls the robotic arm 32 based on this relative pose information. Controller 4 can adjust the angle of the robotic arm 32 using the images of the target vehicle captured by camera 36, ​​thereby adjusting the position of the multiple nozzles 35. Workers can also use the images of the target vehicle captured by camera 36 to check whether the painting meets the requirements.

[0076] In one possible implementation, for example Figure 4 As shown, the spraying assembly 3 also includes a cleaning assembly 37, which is connected to the bracket 33 and electrically connected to the controller 4.

[0077] The controller 4 acquires images captured by the camera 36 at specified detection cycles, inputs the images into a camera occlusion determination model (which can be a machine learning model), and obtains the occlusion determination result of the camera 36. If the occlusion determination result indicates occlusion, the controller controls the cleaning component 37 to clean the camera 36. The cleaning component 37 is a paint solvent spray gun or a camera wiping mechanism. The cleaning component 37 may include multiple components with different cleaning intensities; for example, the cleaning intensity of the camera wiping mechanism is greater than that of the paint solvent spray gun. When the camera 36 is occluded, the controller 4 can first control the water gun to clean the camera 36, ​​and then perform occlusion determination on the images captured by the camera 36. If the occlusion determination result still indicates occlusion, the controller 4 can control the electric brush to clean the camera 36 again.

[0078] This disclosure provides a method for multi-color spraying, for example... Figure 5 As shown, it includes the following steps:

[0079] 501, apply the base coat and intermediate coat to the target vehicle.

[0080] Before painting the target vehicle, pretreatment is required. Degreaser and rust remover are used to remove oil and rust from the vehicle's body. This is followed by a water wash to remove residual chloride ions and other substances. Phosphating is then performed, using an acidic solution containing dihydrogen phosphate to treat the surface, forming a stable, insoluble phosphate film (phosphating film). This phosphating film increases coating adhesion and improves corrosion resistance.

[0081] Workers can also apply sealant to the welded parts of the vehicle body. For example, the roof and side panels are welded together, leaving gaps. Applying sealant to these areas can waterproof and insulate against noise.

[0082] A primer is applied to the target vehicle, resulting in a vehicle with the primer applied. The pre-treated vehicle body is then subjected to cathodic electrophoresis. The vehicle with the primer applied is then dried in an electrophoresis drying oven, resulting in a vehicle that has completed its first drying process.

[0083] A mid-coat is applied to the target vehicle after the first drying process, resulting in a target vehicle with a completed mid-coat coating. The mid-coat is then applied to the body of the target vehicle that has already had a base coat applied. The target vehicle with the completed mid-coat coating is then dried, first at room temperature, and then placed in a mid-coat drying oven for further drying, for example, by maintaining a temperature of 140 degrees Celsius for 20 minutes, resulting in a target vehicle with a completed second drying process.

[0084] 502, mask the first area, and spray the second area with colored varnish.

[0085] The first area is the main area, which is generally the area other than the roof. The second area is the two-tone area, which is generally the roof area of ​​the vehicle body.

[0086] The first area is masked with a masking material, such as masking paper, masking tape, or paint- and dust-proof plastic film. After masking the first area, only the second area of ​​the target vehicle's body can be painted. The process for applying colored clear coat to the second area will be explained in detail later and will not be repeated here.

[0087] 503, mask the second area, and spray clear varnish and topcoat on the first area.

[0088] The second area is masked with masking material. After masking, only the first area of ​​the target vehicle's body can be painted. The process of applying clear coat and topcoat to the first area will be explained in detail later and will not be repeated here.

[0089] After the first area is coated with clear coat and topcoat, the target vehicle is inspected to identify any defects. These defects are then repaired. If defects are found, the vehicle is placed in the repair area, where workers apply the repairs. If no defects are found, the vehicle's coating process is complete.

[0090] In one possible implementation, the process of spraying colored varnish onto the second area can be as follows: Figure 6 As shown, it includes the following steps:

[0091] 601, Use masking material to cover the first area.

[0092] The first area is the main area, which is generally the area other than the roof. The second area is the two-tone area, which is generally the roof area of ​​the vehicle body.

[0093] The first area is covered with a masking material, such as masking paper, masking tape, or paint-proof and dust-proof plastic film. After the first area is covered, only the second area of ​​the target vehicle's body can be painted.

[0094] 602. Apply colored clear coat to the second area to obtain the target vehicle with the second area sprayed.

[0095] Colored varnish is typically black. The colored varnish is then applied to the second area where the intermediate coat has already been applied.

[0096] 603. Let the colored varnish dry.

[0097] After applying the colored clear coat, place the target vehicle in a normal temperature environment to allow it to air dry.

[0098] 604, Remove the covering material.

[0099] After drying, remove the covering material from the first area of ​​the target vehicle.

[0100] 605. The target vehicle is dried to obtain the target vehicle after the third drying process.

[0101] The target material is placed in a drying oven for drying, for example, at 140 degrees Celsius for 20 minutes.

[0102] In one possible implementation, the process of spraying clear varnish and topcoat onto the first area can be as follows: Figure 7 As shown, it includes the following steps:

[0103] 701, Use masking material to cover the second area.

[0104] The second area is covered with a masking material, such as masking paper, masking tape, or paint-proof and dust-proof plastic film. After the second area is covered, only the first area of ​​the target vehicle's body can be painted.

[0105] 702, apply clear coat and topcoat to the first area to obtain the target vehicle with the first area painted.

[0106] Apply the topcoat to the first area where the intermediate coat has already been applied; the topcoat determines the color of this first area of ​​the car body. Then apply the clear coat, which is transparent and increases the gloss of the car body.

[0107] 703. Let the varnish and topcoat dry.

[0108] After applying the clear coat and topcoat, place the target vehicle in a normal temperature environment to allow it to air dry.

[0109] 704, Remove the covering material.

[0110] After drying, remove the covering material from the second area of ​​the target vehicle.

[0111] 705. The target vehicle is dried to obtain the target vehicle after the fourth drying process.

[0112] The target material is placed in a drying oven for drying, for example, at 140 degrees Celsius for 20 minutes.

[0113] In this embodiment of the present disclosure, in the second area, a colored varnish is used instead of the topcoat and varnish, requiring only one application of the colored varnish, thus reducing the number of applications and simplifying the application process.

[0114] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0115] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0116] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, a first region can also be referred to as a second region, and similarly, a second region can also be referred to as a first region.

[0117] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0118] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0119] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0120] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the scope of the claims.

[0121] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for multi-color spraying, characterized in that, The method is applied to a target vehicle, and the method includes: Apply a base coat and a mid-coat coat to the target vehicle; The first area is masked, and the second area is sprayed with colored varnish. The first area is the main area, and the second area is the color-coated area. The second area is masked, and a topcoat and clear varnish are sprayed onto the first area; wherein... The process of masking the first area and spraying a colored varnish onto the second area includes: Cover the first area with a covering material; A colored clear coat is sprayed onto the second area to obtain the target vehicle with the second area sprayed. Let the colored varnish dry; Remove the aforementioned shielding material; The target vehicle is then dried to obtain the target vehicle after the third drying process.

2. The method according to claim 1, characterized in that, The process of applying a base coat and an intermediate coat to the target vehicle includes: The target vehicle is coated with a base coat to obtain a target vehicle with the base coat applied. The target vehicle that has completed the primer coating is dried to obtain the target vehicle that has completed the first drying process. A mid-coat paint is sprayed onto the target vehicle after the first drying is completed, resulting in a target vehicle with the mid-coat paint completed. The target vehicle that has completed the intermediate coat coating is dried to obtain the target vehicle that has completed the second drying process.

3. The method according to claim 1, characterized in that, The process of shielding the second area and spraying clear varnish and topcoat onto the first area includes: The second area is covered with a masking material; Apply clear coat and top coat to the first area to obtain the target vehicle with the first area sprayed. Let the varnish and the topcoat dry; Remove the shielding material; The target vehicle is dried to obtain the target vehicle after the fourth drying process.

4. The method according to claim 1, characterized in that, After applying varnish and topcoat to the first area, the method further includes: The target vehicle is inspected for painting results to identify painting defects; The paint defects of the target vehicle are repaired by applying a new coat.

5. A processing system, characterized in that, The processing system is used to perform the method as described in any one of claims 1-4, the processing system comprising a processing chamber (1), a workbench (2), a spraying assembly (3), and a controller; The stand (2) is located at the bottom of the processing chamber (1), and the stand (2) is used to support the target vehicle; The spraying assembly (3) is located inside the processing chamber (1) and is electrically connected to the controller.

6. The processing system according to claim 5, characterized in that, The stand (2) is a fixed stand.

7. The processing system according to claim 5, characterized in that, The platform (2) includes a fixed base (21) and a rotating platform (22). The rotating platform (22) is located above the fixed base (21) and connected to the fixed base (21). The rotating platform (22) is able to rotate relative to the fixed base (21). The rotating platform (22) is used to carry the target vehicle.

8. The processing system according to claim 5, characterized in that, The spraying assembly (3) includes a ground track (31), a robotic arm (32), a support (33), a spraying device (34), and multiple spray nozzles (35); The ground track (31) is a rectangular track with rounded corners. The ground track (31) is located at the bottom of the processing room (1) and surrounds the frame (2). The first end (32a) of the robotic arm (32) is connected to the ground track (31) and can move on the ground track (31); the second end (32b) of the robotic arm (32) is connected to the bracket (33); and the robotic arm (32) is electrically connected to the controller. The spraying equipment (34) is located inside the processing chamber (1), and the spraying equipment (34) is electrically connected to the controller; The plurality of nozzles (35) are respectively connected to the bracket (33), the plurality of nozzles (35) are respectively connected to the spraying equipment (34) through pipes, and the plurality of nozzles (35) are respectively electrically connected to the controller.

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