Spraying equipment for automobile metal plate and working method of spraying equipment

Abstract

The invention discloses spraying equipment for an automobile metal plate and a working method of the spraying equipment, and relates to the technical field of automobile manufacturing and maintaining.The spraying equipment comprises a workbench, a supporting mechanism, a grinding mechanism, a drying mechanism and a spraying mechanism, the supporting mechanism comprises a first support, a second support, a connecting base, a rotating frame, a connecting frame and a mounting frame, and the first support is arranged on the workbench; the second support is slidably connected with the first support, the connecting base is slidably connected with the second support, the rotating frame is rotatably connected with the connecting base, the connecting frame is rotatably connected with the rotating frame, the mounting frame is rotatably connected with the connecting frame, and three mounting plates are fixedly arranged on the side portion of the mounting frame. And the polishing mechanism, the drying mechanism and the spraying mechanism are arranged on the corresponding mounting plates of the mounting frame correspondingly. The polishing mechanism, the drying mechanism and the spraying mechanism are integrated on the same mounting frame, process conversion can be completed through the switching function of the supporting mechanism, the time for manually transferring sheet metal parts and replacing equipment is saved, and the waiting cost in process connection is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of automobile manufacturing and repair, specifically to a spraying equipment for automobile sheet metal and its working method. Background Technology

[0002] In the automotive manufacturing and repair industry, automotive sheet metal painting is a key process to ensure the appearance quality and protective performance of the vehicle body, and its work results directly affect the service life and market value of the vehicle. With the rapid development of the automotive industry, the shape design of sheet metal parts has become increasingly diverse, including not only conventional flat structures but also a large number of complex curved surfaces and special shapes, which places higher demands on the adaptability of painting equipment and the continuity of the process.

[0003] Existing technologies typically break down processes such as grinding, drying, and spraying into different equipment or workstations. During the operation, sheet metal parts need to be manually transferred repeatedly between various machines, which not only consumes a lot of time and increases the waiting costs of process connections, but also easily leads to secondary contaminants such as dust and oil stains on the surface of the sheet metal parts during the transfer process, or causes surface scratches and damage due to handling operations, seriously affecting the stability of work quality. At the same time, it also greatly increases the labor intensity of manual labor, which is not conducive to the development of mass production or efficient maintenance operations. Summary of the Invention

[0004] This invention provides a spraying equipment and its working method for automotive sheet metal, which can solve the problem in the prior art of separating the processes of grinding, drying, and spraying into different equipment or workstations.

[0005] An automotive sheet metal spraying device includes a worktable, a support mechanism, a grinding mechanism, a drying mechanism, and a spraying mechanism. The support mechanism includes a first bracket, a second bracket, a connecting seat, a rotating frame, a connecting frame, and a mounting frame. The first bracket is fixedly mounted on the worktable. The second bracket is slidably connected to the first bracket along the X-axis. The connecting seat is slidably connected to the second bracket along the Y-axis. The rotating frame is rotatably connected to the connecting seat around the Z-axis. The connecting frame is rotatably connected to the rotating frame around the Y-axis. The mounting frame is rotatably connected to the connecting frame around the X-axis. Three mounting plates arranged in a triangle are fixedly mounted on the side of the mounting frame. The grinding mechanism, the drying mechanism, and the spraying mechanism are respectively mounted on the corresponding mounting plates of the mounting frame.

[0006] According to one embodiment of the present invention, the support mechanism further includes a drive shaft, a transmission shaft, a first bevel gear, and a second bevel gear. The top of the drive shaft is rotatably connected to the connecting seat, and the bottom of the drive shaft and both ends of the transmission shaft are rotatably connected to the rotating frame. The two ends of the transmission shaft are fixedly connected to the connecting frame. The first bevel gear is coaxially fixedly connected to the bottom of the drive shaft, and the second bevel gear is coaxially fixedly connected to the transmission shaft, and the first bevel gear and the second bevel gear mesh with each other.

[0007] According to one embodiment of the present invention, the support mechanism further includes a first gear, a second gear, a third gear and a fourth gear. The first gear is coaxially and fixedly connected to the top of the drive shaft, the third gear is coaxially and fixedly connected to the rotating frame, and the second gear and the fourth gear are rotatably connected to the connecting seat. The first gear meshes with the third gear, and the second gear meshes with the fourth gear.

[0008] According to one embodiment of the present invention, the support mechanism further includes a first motor, a second motor, and a third motor. The first motor and the second motor are both fixedly connected to the connecting seat. The output ends of the first motor and the second motor are respectively fixedly connected to the second gear and the fourth gear on the same axis. The third motor is fixedly connected to the connecting frame, and the output end of the third motor is fixedly connected to the mounting frame.

[0009] According to one embodiment of the present invention, the grinding mechanism includes an electric motor and a grinding head, wherein the electric motor is fixedly connected to a mounting plate, and the grinding head is fixedly connected to the output end of the electric motor.

[0010] According to one embodiment of the present invention, the polishing mechanism further includes a dust collection hood and a vacuum cleaner. The dust collection hood is fixedly connected to an electric motor and covers the outside of the polishing head. A dust discharge port is provided on the side of the dust collection hood and is connected to the vacuum cleaner.

[0011] According to one embodiment of the present invention, the spraying mechanism includes a spray head, a liquid pump and a liquid storage tank. A plurality of spray heads are arranged in a circular array on a mounting plate. The output end of the liquid pump is connected to the spray head, and the input end of the liquid pump is connected to the liquid storage tank.

[0012] According to one embodiment of the present invention, the drying mechanism includes an air guide hood, an electric heating tube, and a fan. The air guide hood is fixedly connected to the mounting plate. An air outlet and an air inlet are respectively opened at both ends of the air guide hood. The electric heating tube is fixedly installed in the air outlet, and the air inlet is connected to the fan.

[0013] According to one embodiment of the present invention, an isolation cover is fixedly provided on the top of the workbench, an opening is provided on the side of the isolation cover, an isolation door is provided at the opening, the support mechanism is located inside the isolation box, and a sliding groove is provided on the top of the workbench, in which a sliding plate is slidably disposed.

[0014] The advantages of this invention compared to the prior art are: 1. By integrating the grinding mechanism, drying mechanism, and spraying mechanism into the same mounting frame, the process can be changed through the switching function of the support mechanism, saving the time of manually transferring sheet metal parts and changing equipment, reducing the waiting cost in the process connection, and avoiding secondary contamination or damage to the surface of sheet metal parts during the transfer process, thus ensuring the stability of the operation quality.

[0015] 2. Through multi-axial sliding and rotational fits, the grinding, drying, and spraying mechanisms can flexibly adapt to automotive sheet metal parts of different shapes and sizes. Whether it is a flat surface, a curved surface, or a complex structure, it can achieve all-round, blind-spot-free operation, effectively solving the problems of poor adaptability and many blind spots in traditional equipment.

[0016] 3. The triangular arrangement of the mounting plate optimizes the mechanism layout, ensuring the stability of the grinding, drying, and spraying mechanisms while allowing each mechanism to operate without interference, and making path switching simpler and smoother. The overall equipment has a compact structure, is easy to operate, reduces manual labor intensity, and is suitable for mass production or repair scenarios, effectively improving the overall work efficiency and finished product quality of automotive sheet metal spraying.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of a spray painting equipment for automotive sheet metal work.

[0019] Figure 2 This is a three-dimensional structural diagram of the workbench in this invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the support mechanism in this invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the grinding mechanism, drying mechanism, and spraying mechanism in this invention.

[0022] Figure 5This is a three-dimensional structural cross-sectional view of the rotating frame in this invention.

[0023] The reference numerals in the figures include: 1. Workbench; 2. Support mechanism; 3. Grinding mechanism; 4. Drying mechanism; 5. Spraying mechanism; 6. First bracket; 7. Second bracket; 8. Connecting seat; 9. Rotating frame; 10. Connecting frame; 11. Mounting frame; 12. Drive shaft; 13. Transmission shaft; 14. First bevel gear; 15. Second bevel gear; 16. First gear; 17. Second gear; 18. Third gear; 19. Fourth gear; 20. First motor; 21. Second motor; 22. Third motor; 23. Electric motor; 24. Grinding head; 25. Dust collection hood; 26. Dust exhaust port; 27. Spray nozzle; 28. Air guide hood; 29. ​​Electric heating tube; 30. Air outlet; 31. Air inlet; 32. Isolation cover; 33. Opening; 34. Isolation door; 35. Slide rail; 36. Slide plate. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0025] like Figures 1 to 5 As shown, an automotive sheet metal painting device includes a worktable, a support mechanism, a grinding mechanism, a drying mechanism, and a painting mechanism. The support mechanism includes a first bracket, a second bracket, a connecting seat, a rotating frame, a connecting frame, and a mounting frame. The first bracket is fixedly mounted on the worktable. The second bracket is slidably connected to the first bracket along the X-axis. The connecting seat is slidably connected to the second bracket along the Y-axis, allowing the mounting frame to move flexibly in a horizontal plane, thus accurately aligning with the area to be processed on the sheet metal part. Three mounting plates arranged in a triangle are fixedly mounted on the side of the mounting frame. The grinding mechanism, drying mechanism, and painting mechanism are respectively mounted on the corresponding mounting plates of the mounting frame. The rotating frame is rotatably connected to the connecting seat around the Z-axis, the connecting frame is rotatably connected to the rotating frame around the Y-axis, and the mounting frame is rotatably connected to the connecting frame around the X-axis. This superposition of three rotational degrees of freedom allows the grinding mechanism, drying mechanism, and painting mechanism, fixed on different mounting plates, to quickly switch working positions and adjust the working angle and distance according to the curved surface shape and size specifications of the sheet metal part.

[0026] During operation, the grinding mechanism is first aligned with the sheet metal part via the support mechanism. After setting the rotation speed according to the surface impurities, grinding is started to remove impurities and smooth the surface flatness. After grinding, there is no need for manual handling of the sheet metal part. The drying mechanism can be switched to the working position simply by using the shifting and rotating functions of the support mechanism. The drying parameters are set according to the material and surface humidity of the sheet metal part to dry the ground surface and prevent moisture or residual impurities from affecting the spraying effect. After drying, the support mechanism is used again to switch to the spraying mechanism to complete the spraying operation according to the preset angle and path. Finally, the drying mechanism is reset with the help of the support mechanism to dry and cure the sprayed paint. The entire process relies on the support mechanism to achieve seamless switching between the various mechanisms without the need to change equipment or manually transfer materials, forming a complete automated operation loop.

[0027] By integrating the grinding, drying, and spraying mechanisms into the same mounting frame, the process can be switched through the switching function of the support mechanism. This eliminates the time spent on manually transferring sheet metal parts and changing equipment, reduces waiting costs during process transitions, and avoids secondary contamination or damage to the surface of sheet metal parts during transfer, thus ensuring the stability of work quality.

[0028] By using the sliding fit of the X and Y axes and the rotational fit of the Z, Y, and X axes, the grinding, drying, and spraying mechanisms can flexibly adapt to automotive sheet metal parts of different shapes and sizes. Whether it is a flat surface, a curved surface, or a complex structure, it can achieve all-round, blind-spot-free operation, effectively solving the problems of poor adaptability and many blind spots in traditional equipment.

[0029] The triangular mounting plate structure optimizes the mechanism layout, ensuring the stability of the grinding, drying, and spraying mechanisms while allowing each mechanism to operate without interference, and making path switching simpler and smoother. The overall equipment has a compact structure, is easy to operate, reduces manual labor intensity, and is suitable for mass production or repair scenarios, effectively improving the overall work efficiency and finished product quality of automotive sheet metal spraying.

[0030] According to one embodiment of the present invention, the support mechanism further includes a drive shaft, a transmission shaft, a first bevel gear, and a second bevel gear. The top of the drive shaft is rotatably connected to the connecting seat, and the bottom of the drive shaft and both ends of the transmission shaft are rotatably connected to the rotating frame. The two ends of the transmission shaft are fixedly connected to the connecting frame. The first bevel gear is coaxially fixedly connected to the bottom of the drive shaft, and the second bevel gear is coaxially fixedly connected to the transmission shaft, and the first bevel gear and the second bevel gear mesh with each other.

[0031] When the drive shaft is driven to rotate by an external force, the first bevel gear fixed coaxially at its bottom rotates synchronously. Because the first bevel gear meshes with the second bevel gear fixed coaxially to the drive shaft, it will drive the drive shaft to rotate. Then, through the fixed connection between the drive shaft and the connecting frame, the connecting frame is driven to rotate around the axis of the drive shaft.

[0032] Combining the original X and Y axis sliding and Z axis rotation functions of the support mechanism, this bevel gear transmission structure can further refine the angle adjustment accuracy of the connecting frame and the mounting frame, enabling the grinding mechanism, drying mechanism and spraying mechanism to more accurately adapt to the curved surface shape of sheet metal parts. Especially when dealing with complex curved parts, the angle can be finely adjusted and stably maintained through the speed control of the drive shaft.

[0033] According to one embodiment of the present invention, the support mechanism further includes a first gear, a second gear, a third gear and a fourth gear. The first gear is coaxially and fixedly connected to the top of the drive shaft, the third gear is coaxially and fixedly connected to the rotating frame, and the second gear and the fourth gear are rotatably connected to the connecting seat. The first gear meshes with the third gear, and the second gear meshes with the fourth gear.

[0034] When the second gear rotates, it drives the meshing first gear to rotate, thereby adjusting the rotation angle of the rotating frame in the vertical plane. When the fourth gear rotates, it can assist in adjusting the rotation angle of the rotating frame in the horizontal plane through the meshing relationship. The multi-gear meshing provides multiple power transmission paths. By driving the second or fourth gear individually, or by driving both in tandem, the rotation angle and speed of the rotating frame can be flexibly adjusted. This can meet the needs of quickly switching the position of the mechanism, as well as achieve precise angle calibration, and adapt to sheet metal parts of different sizes and shapes.

[0035] According to one embodiment of the present invention, the support mechanism further includes a first motor, a second motor, and a third motor. The first motor and the second motor are both fixedly connected to the connecting seat. The output ends of the first motor and the second motor are respectively fixedly connected to the second gear and the fourth gear on the same axis. The third motor is fixedly connected to the connecting frame, and the output end of the third motor is fixedly connected to the mounting frame.

[0036] During operation, starting the first motor drives the second gear to rotate, which in turn adjusts the angle between the rotating frame and the drive shaft. Starting the second motor drives the fourth gear to rotate, assisting in adjusting the posture of the rotating frame. Starting the third motor directly drives the mounting frame to rotate around the X-axis, adjusting the working angles of the grinding, drying, and spraying mechanisms on the mounting frame. Combined with the original X and Y axis sliding function of the support mechanism, the three independent motors correspond to different adjustment dimensions. By controlling the speed, direction, and start / stop of the first, second, and third motors, the support mechanism can achieve automated multi-degree-of-freedom adjustment without manual operation.

[0037] According to one embodiment of the present invention, the polishing mechanism includes an electric motor and a polishing head. The electric motor is fixedly connected to a mounting plate, and the polishing head is fixedly connected to the output end of the electric motor. The polishing mechanism also includes a dust collection hood and a vacuum cleaner. The dust collection hood is fixedly connected to the electric motor and covers the outside of the polishing head. A dust discharge port is provided on the side of the dust collection hood, and the dust discharge port is connected to the vacuum cleaner.

[0038] When operating, the electric motor is started, and the output end drives the grinding head to rotate at high speed to grind the surface of the sheet metal parts. At the same time, the dust collection hood, which is fixed to the electric motor and covers the outside of the grinding head, can confine the dust generated by grinding to the space inside the hood. The dust exhaust port on the side of the dust collection hood is connected to the vacuum cleaner. After the vacuum cleaner is started, it generates negative pressure, which sucks the dust inside the hood into the vacuum cleaner through the dust exhaust port, realizing real-time dust collection.

[0039] According to one embodiment of the present invention, the spraying mechanism includes a spray head, a liquid pump and a liquid storage tank. A plurality of spray heads are arranged in a circular array on a mounting plate. The output end of the liquid pump is connected to the spray head, and the input end of the liquid pump is connected to the liquid storage tank.

[0040] During operation, the liquid pump is activated to pressurize the paint in the storage tank and deliver it to each nozzle. The nozzles atomize the paint and spray it evenly onto the surface of the sheet metal part. The ring array of nozzles can expand the coverage area of ​​a single spray. At the same time, the output pressure can be adjusted by the liquid pump to control the atomization effect and spray volume of the paint, adapting to the coating thickness requirements. In addition, the angle of the mounting bracket can be adjusted by the support mechanism so that the ring nozzles can fit the curved surface of the sheet metal part, ensuring that the paint sprayed by each nozzle forms a uniform coating on the surface and avoiding local missed sprays or uneven coating.

[0041] According to one embodiment of the present invention, the drying mechanism includes an air guide hood, an electric heating tube, and a fan. The air guide hood is fixedly connected to the mounting plate. An air outlet and an air inlet are respectively opened at both ends of the air guide hood. The electric heating tube is fixedly installed in the air outlet, and the air inlet is connected to the fan.

[0042] During operation, the fan starts and draws outside air into the air guide hood through the air inlet. As the air flows through the air outlet, it is heated to the set temperature by the electric heating tube, forming hot air that is then blown from the air outlet onto the surface of the sheet metal part. The air guide hood can concentrate the flow of hot air and prevent heat from spreading. At the same time, the angle of the air guide hood can be adjusted by the support mechanism to ensure that the air outlet is aligned with the area to be dried, ensuring that the hot air evenly covers the surface of the sheet metal part and achieves rapid drying.

[0043] In addition, the hot air temperature can be controlled by adjusting the power of the electric heating element, and the hot air speed can be controlled by adjusting the fan speed, adapting to different sheet metal parts and different drying requirements (such as surface drying after grinding, and paint curing after spraying).

[0044] According to one embodiment of the present invention, an isolation cover is fixedly installed on the top of the workbench, and an opening is provided on the side of the isolation cover. An isolation door is provided at the opening. The support mechanism is located inside the isolation box. A sliding groove is provided on the top of the workbench, and a sliding plate is slidably installed in the sliding groove. Before operation, the isolation door is opened, and the sheet metal part to be processed is placed on the sliding plate slidably installed in the sliding groove on the top of the workbench. The sliding plate is pushed along the sliding groove to the working position inside the isolation cover, and the isolation door is closed to start the operation. After the operation is completed, the isolation door is opened, and the sliding plate is slid to remove the sheet metal part from the isolation cover, realizing convenient handling. The isolation cover can isolate contaminants such as dust and paint droplets during the operation, and the sliding plate simplifies the positioning and handling process of the sheet metal part.

[0045] A method for operating an automotive sheet metal spraying equipment includes the following steps: Step 1: Place the automotive sheet metal parts to be painted on the workbench surface; Step 2: Based on the impurities on the surface of the sheet metal part, set the rotation speed of the grinding mechanism, align the grinding mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the grinding mechanism to grind the surface of the sheet metal part. Step 3: After grinding, turn off the grinding mechanism. Based on the material of the sheet metal part and the humidity of the surface after grinding, set the drying temperature and drying time. Align the drying mechanism on the mounting frame with the sheet metal part through the support mechanism, start the drying mechanism, and start the drying mechanism to dry the surface of the sheet metal part. Step 4: After drying is complete, turn off the drying mechanism, align the spraying mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the spraying mechanism to spray the surface of the sheet metal part. Step 5: After the spraying is completed, turn off the spraying mechanism, align the drying mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the drying mechanism to dry the paint on the surface of the sheet metal part.

[0046] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A spraying equipment for automotive sheet metal work, characterized in that, The system includes a workbench, a support mechanism, a grinding mechanism, a drying mechanism, and a spraying mechanism. The support mechanism includes a first bracket, a second bracket, a connecting seat, a rotating frame, a connecting frame, and a mounting frame. The first bracket is fixedly mounted on the workbench. The second bracket is slidably connected to the first bracket along the X-axis. The connecting seat is slidably connected to the second bracket along the Y-axis. The rotating frame is rotatably connected to the connecting seat around the Z-axis. The connecting frame is rotatably connected to the rotating frame around the Y-axis. The mounting frame is rotatably connected to the connecting frame around the X-axis. Three mounting plates arranged in a triangle are fixedly mounted on the side of the mounting frame. The grinding mechanism, the drying mechanism, and the spraying mechanism are respectively mounted on the corresponding mounting plates of the mounting frame.

2. The automotive sheet metal spraying equipment as described in claim 1, characterized in that, The support mechanism further includes a drive shaft, a transmission shaft, a first bevel gear, and a second bevel gear. The top of the drive shaft is rotatably connected to the connecting seat. The bottom of the drive shaft and both ends of the transmission shaft are rotatably connected to the rotating frame. Both ends of the transmission shaft are fixedly connected to the connecting frame. The first bevel gear is coaxially fixedly connected to the bottom of the drive shaft, and the second bevel gear is coaxially fixedly connected to the transmission shaft. The first bevel gear and the second bevel gear mesh with each other.

3. The automotive sheet metal spraying equipment as described in claim 2, characterized in that, The support mechanism further includes a first gear, a second gear, a third gear, and a fourth gear. The first gear is coaxially and fixedly connected to the top of the drive shaft. The third gear is coaxially and fixedly connected to the rotating frame. The second gear and the fourth gear are rotatably connected to the connecting seat. The first gear meshes with the third gear, and the second gear meshes with the fourth gear.

4. The automotive sheet metal spraying equipment as described in claim 3, characterized in that, The support mechanism further includes a first motor, a second motor, and a third motor. The first motor and the second motor are both fixedly connected to the connecting seat. The output ends of the first motor and the second motor are respectively fixedly connected to the second gear and the fourth gear on the same axis. The third motor is fixedly connected to the connecting frame, and the output end of the third motor is fixedly connected to the mounting frame.

5. The automotive sheet metal spraying equipment as described in claim 1, characterized in that, The grinding mechanism includes an electric motor and a grinding head. The electric motor is fixedly connected to the mounting plate, and the grinding head is fixedly connected to the output end of the electric motor.

6. The automotive sheet metal spraying equipment as described in claim 5, characterized in that, The polishing mechanism also includes a dust collection hood and a vacuum cleaner. The dust collection hood is fixedly connected to the electric motor and covers the outside of the polishing head. The side of the dust collection hood has a dust discharge port, which is connected to the vacuum cleaner.

7. The automotive sheet metal spraying equipment as described in claim 1, characterized in that, The spraying mechanism includes a spray nozzle, a liquid pump, and a liquid storage tank. Several spray nozzles are arranged in a circular array on the mounting plate. The output end of the liquid pump is connected to the spray nozzle, and the input end of the liquid pump is connected to the liquid storage tank.

8. The automotive sheet metal spraying equipment as described in claim 1, characterized in that, The drying mechanism includes an air guide hood, an electric heating tube, and a fan. The air guide hood is fixedly connected to the mounting plate. An air outlet and an air inlet are respectively opened at both ends of the air guide hood. The electric heating tube is fixedly installed in the air outlet, and the air inlet is connected to the fan.

9. The automotive sheet metal spraying equipment as described in claim 1, characterized in that, An isolation cover is fixedly installed on the top of the workbench, and an opening is provided on the side of the isolation cover. An isolation door is provided at the opening. The support mechanism is located inside the isolation box. A sliding groove is provided on the top of the workbench, and a sliding plate is slidably installed in the sliding groove.

10. A method for operating an automotive sheet metal spraying equipment, wherein the method employs the automotive sheet metal spraying equipment described in any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Place the automotive sheet metal parts to be painted on the workbench surface; Step 2: Based on the impurities on the surface of the sheet metal part, set the rotation speed of the grinding mechanism, align the grinding mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the grinding mechanism to grind the surface of the sheet metal part. Step 3: After grinding, turn off the grinding mechanism. Based on the material of the sheet metal part and the humidity of the surface after grinding, set the drying temperature and drying time. Align the drying mechanism on the mounting frame with the sheet metal part through the support mechanism, start the drying mechanism, and start the drying mechanism to dry the surface of the sheet metal part. Step 4: After drying is complete, turn off the drying mechanism, align the spraying mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the spraying mechanism to spray the surface of the sheet metal part. Step 5: After the spraying is completed, turn off the spraying mechanism, align the drying mechanism on the mounting bracket with the sheet metal part through the support mechanism, and start the drying mechanism to dry the paint on the surface of the sheet metal part.

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