An electrostatic powder coating equipment for arc-shaped curved wood decorative boards and its usage method

Abstract

The present invention discloses an electrostatic powder coating equipment for arc-shaped bent wood decorative boards and its usage method, specifically relating to the technical field of electrostatic coating. It includes a driving structure. On the left and right sides of the top of the driving structure, there are fixedly connected fixing structures. At the middle position of the top of the driving structure, there is a fixedly connected coating structure. On the top of the [coating structure], there is a protective shell. Observation doors are arranged on both the left and right sides of the protective shell, and observation windows are arranged on both the front and back sides of the protective shell. By setting the fixing structure and the coating structure, the automation degree of the coating process is high, the work efficiency is improved, and the labor intensity is reduced. At the same time, through the coating mechanism, the uniformity of coating is ensured, meeting the high-quality usage requirements. In addition, the equipment structure of the present invention is compact, facilitating installation and maintenance. By setting the driving structure, the coating equipment and the board can be rotated, enabling the coating equipment to spray the board comprehensively and improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic coating, and more specifically, to an electrostatic powder coating device for arc-shaped curved wood decorative boards and a method for using the same. Background Art

[0002] With the improvement of consumers' requirements for product performance and in order to extend the service life of products, more and more products use surface treatment operations, which has promoted the rapid development of the coating industry. Surface treatment operations include electroplating, coating, painting, powder spraying, etc., and have been increasingly widely used in various fields such as household appliances, mechanical parts, and furniture. Spraying paint on the surface of products can improve the corrosion resistance and rust prevention ability of products, and also enhance the decorative beauty of products; due to the advantages of low equipment investment and zero emission of VOC (volatile organic compounds) of powder coatings, powder spraying on the surface of products has also been widely used.

[0003] According to the patent document CN110508411A, the present invention relates to the field of electrostatic coating, and particularly to a powder electrostatic coating device and its coating process. It includes a transportation line, a preheating device, a spraying device, and a curing device. The transportation line sequentially passes through the preheating device, the spraying device, and the curing device. A grounding wire is connected to the transportation line. A fluidization plate and an electrostatic generator are provided inside the spraying device. The fluidization plate is filled with resin powder. The spraying device is connected to a compressed air machine. An exhaust port is provided on the spraying device, and the exhaust port is connected to a gas recovery device. The powder is fluidized by electrostatic air, so that the powder is evenly suspended in space under the action of static electricity. When a grounded workpiece with a certain temperature enters the chamber, the charged powder is adsorbed on the surface of the workpiece under the action of static electricity, so as to obtain a relatively thick and uniform smooth coating film at one time. It solves the defects of the previous methods such as uncontrollable thickness, multiple coating times, multiple sintering times, environmental pollution, energy waste, and coatings.

[0004] The existing powder spraying equipment for electrostatic powder coating sprays the workpiece up and down manually with a spray gun. This method has low work efficiency, high labor intensity, and is prone to uneven spraying, and cannot meet the use requirements. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an electrostatic powder coating device for arc-shaped curved wood decorative boards and a method for using the same. The technical problem to be solved by the present invention is that the existing powder spraying equipment for electrostatic powder coating sprays the workpiece up and down manually with a spray gun. This method has low work efficiency, high labor intensity, and is prone to uneven spraying, and cannot meet the use requirements.

[0006] To achieve the above object, the present invention provides the following technical solutions: It includes a driving structure, on the left and right sides of the top of the driving structure are fixedly connected with fixing structures, in the middle position of the top of the driving structure is fixedly connected with a painting structure, on the top of the driving structure is fixedly connected with a protective shell, on the left and right sides of the protective shell are provided with observation doors, and on the front and back sides of the protective shell are provided with observation windows;

[0007] The driving structure includes a base, on the top of the base are opened three circular moving holes one that horizontally penetrate to the inside in an array, the inner wall of the circular moving hole one is movably connected with a connecting shaft, at the bottom of the connecting shaft is fixedly connected with a gear, at the bottom of the gear is fixedly connected with a limiting disk, and the outer walls of the three gears are meshed with an internal toothed belt;

[0008] The fixing structure includes mounting plates, the bottoms of the two mounting plates are fixedly connected with the tops of the left and right connecting shafts, on the left and right sides of the top of the mounting plate are opened mounting grooves, on the front left side of the mounting plate is fixedly connected with a motor housing two, and on the front and back sides of the right side of the inner wall of the left mounting groove are opened rectangular through holes that penetrate to the inside of the right mounting groove;

[0009] The painting structure includes a guiding component, inside the guiding component is provided with a driving component, and on the left and right sides of the driving component are fixedly connected with two symmetrical electrostatic powder painting mechanisms.

[0010] As a further solution of the present invention: at the bottom of the inner wall of the base is fixedly connected with a motor housing one, on the top of the motor housing one is opened a circular moving hole two that penetrates to the inside, the inner wall of the circular moving hole two is movably connected with a rotating shaft one, at the bottom of the rotating shaft one is fixedly connected with a stepping motor one, the bottom of the stepping motor one is fixedly connected with the inner wall of the motor housing one, and the output end of the stepping motor one is fixedly connected with the bottom of the middle limiting disk.

[0011] As a further solution of the present invention: on the front side of the inner wall of the left mounting groove is opened a circular moving hole three that penetrates to the inside of the motor housing two, the inner wall of the circular moving hole three is movably connected with a rotating shaft two, at the front end of the rotating shaft two is fixedly connected with a stepping motor two, and the bottom of the stepping motor two is fixedly connected with the inner wall of the motor housing two.

[0012] As a further solution of the present invention: at the rear end of the rotating shaft two is fixedly connected with a bidirectional threaded rod, at the middle position of the outer wall of the bidirectional threaded rod is movably connected with a support sleeve, the outer wall of the support sleeve is fixedly connected with the inner wall of the left mounting groove, and the rear end of the bidirectional threaded rod is rotatably connected with the inner wall of the left mounting groove.

[0013] As a further solution of the present invention: two symmetrical sliding blocks I are threadedly connected to the outer wall of the bidirectional threaded rod. A connecting block is fixedly connected to the right side of the sliding block I, and a sliding sleeve I is fixedly connected to the right side of the connecting block. A sliding rod I is movably connected to the inner walls of the two sliding sleeves I. The front and rear ends of the sliding rod I are fixedly connected to the inner wall of the right mounting groove. The outer wall of the connecting block is movably connected to the inner wall of the rectangular through hole. Fixed rods are fixedly connected to the tops of the sliding sleeve I and the sliding block I.

[0014] As a further solution of the present invention: the guiding component includes a mounting frame. Arc-shaped guiding holes penetrating to the inside are provided on both the upper and lower sides of the mounting frame. A connecting plate I is fixedly connected to the bottom of the mounting frame, and the bottom of the connecting plate I is fixedly connected to the top of the middle connecting shaft.

[0015] As a further solution of the present invention: the driving component includes two rectangular troughs. The mutually remote sides of the upper and lower rectangular troughs are fixedly connected to the inner wall of the mounting frame. A motor housing III is fixedly connected to the front side of the upper rectangular trough. A circular moving hole IV penetrating to the inside of the motor housing III is provided on the front side of the inner wall of the upper rectangular trough. A rotating shaft III is movably connected to the inner wall of the circular moving hole IV. A stepping motor III is fixedly connected to the front end of the rotating shaft III, and the bottom of the stepping motor III is fixedly connected to the inner wall of the motor housing III.

[0016] As a further solution of the present invention: a lead screw is fixedly connected to the rear end of the rotating shaft III. A sliding block II is threadedly connected to the outer wall of the lead screw. A fixing plate is fixedly connected to the left side of the sliding block II. A sliding sleeve II is fixedly connected to the lower right side of the fixing plate. A sliding rod II is movably connected to the inner wall of the sliding sleeve II. The front and rear ends of the sliding rod II are fixedly connected to the inner wall of the lower rectangular trough.

[0017] As a further solution of the present invention: circular moving holes V penetrating to the left are provided on the upper and lower sides of the front and rear sides on the right side of the fixing plate. A movable rod is movably connected to the inner wall of the circular moving hole V. Connecting plates II are fixedly connected to the left and right ends of the four movable rods. The mutually remote sides of the two connecting plates II are fixedly connected to the mutually close sides of the two electrostatic powder coating mechanisms. A extending plate is fixedly connected to the right side of the left connecting plate II. A guiding rod is fixedly connected to the side of the extending plate away from the left connecting plate II. The upper and lower sides of the outer wall of the guiding rod are movably connected to the inner wall of the arc-shaped guiding hole.

[0018] In addition, the present invention also relates to a method for using an electrostatic powder coating equipment for arc-shaped curved wood decorative boards, including the following steps:

[0019] Step 1: Place the arc-shaped curved wood decorative board to be coated on the top of the mounting plate in the fixing structure, and then start the stepping motor II so that the fixed rod fixes the arc-shaped curved wood decorative board.

[0020] Step 2: Start the stepper motor three in the drive assembly to drive the electrostatic powder coating mechanism to uniformly coat along the surface of the board.

[0021] Step 3: When one side of the arc-shaped curved wood decorative board is coated, start the stepper motor one to rotate the fixing structure and the coating structure, and rotate both the fixing structure and the coating structure by °, so as to coat the other side of the arc-shaped curved wood decorative board.

[0022] Step 4: After the coating is completed, turn off the stepper motor three and the stepper motor two, and then take out the coated board from the top of the fixing structure for subsequent curing treatment.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. By setting the fixing structure and the coating structure, the present invention has a high degree of automation in the coating process, improves work efficiency, reduces labor intensity. At the same time, through the coating mechanism, the uniformity of coating is ensured, meeting the high-quality use requirements. In addition, the equipment structure of the present invention is compact, occupies a small space, and is convenient for installation and maintenance.

[0025] 2. By setting the drive structure, the present invention rotates the coating equipment and the board, enabling the coating equipment to spray the board comprehensively, improving work efficiency. Brief Description of the Drawings

[0026] Figure 1 is the structural schematic diagram of the present invention;

[0027] Figure 2 is the structural sectional view of the drive structure of the present invention;

[0028] Figure 3 is the structural sectional view of the fixing structure of the present invention;

[0029] Figure 4 is the structural schematic diagram of the coating structure of the present invention;

[0030] Figure 5 is the structural schematic diagram of the guiding component of the present invention;

[0031] Figure 6 is the structural sectional view of the drive assembly of the present invention.

[0032] In the figure: 1. Driving structure; 2. Fixed structure; 3. Coating structure; 4. Protective shell; 5. Observation door; 6. Observation window; 11. Base; 12. Motor housing 1; 13. Rotating shaft 1; 14. Stepping motor 1; 15. Connecting shaft; 16. Gear; 17. Limiting disc; 18. Internal tooth belt; 21. Mounting plate; 22. Mounting groove; 23. Motor housing 2; 24. Rotating shaft 2; 25. Stepping motor 2; 26. Bidirectional threaded rod; 27. Support sleeve; 28. Slide block 1; 29. Slide rod 1; 20. Slide sleeve 1; 201. Fixed rod; 202. Rectangular through hole; 203. Connecting block; 31. Guide assembly; 32. Driving assembly; 33. Electrostatic powder coating mechanism; 311. Mounting frame; 312. Arc-shaped guide hole; 313. Connecting plate 1; 321. Rectangular groove body; 322. Motor housing 3; 323. Rotating shaft 3; 324. Stepping motor 3; 325. Lead screw; 326. Slide block 2; 327. Slide rod 2; 328. Slide sleeve 2; 329. Fixed plate; 320. Movable rod; 3201. Connecting plate 2; 3202. Extension plate; 3203. Guide rod. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figure 1 shown, the present invention provides an electrostatic powder coating device for arc-shaped curved wood decorative plates, including a driving structure 1. Fixed structures 2 are fixedly connected to both the left and right sides of the top of the driving structure 1. A coating structure 3 is fixedly connected to the middle position of the top of the driving structure 1. A protective shell 4 is fixedly connected to the top of the driving structure 1. Observation doors 5 are arranged on both the left and right sides of the protective shell 4. Observation windows 6 are arranged on both the front and back sides of the protective shell 4;

[0035] As Figure 2As shown in the figure, the driving structure 1 includes a base 11. Three circular moving holes one that horizontally penetrate through to the inside are provided at the top of the base 11. A connecting shaft 15 is movably connected to the inner wall of the circular moving hole one. A gear 16 is fixedly connected to the bottom of the connecting shaft 15. A limiting disk 17 is fixedly connected to the bottom of the gear 16. The outer walls of the three gears 16 are meshed with an internal toothed belt 18. A motor housing one 12 is fixedly connected to the bottom of the inner wall of the base 11. A circular moving hole two that penetrates through to the inside is provided at the top of the motor housing one 12. A rotating shaft one 13 is movably connected to the inner wall of the circular moving hole two. A stepping motor one 14 is fixedly connected to the bottom of the rotating shaft one 13. The bottom of the stepping motor one 14 is fixedly connected to the inner wall of the motor housing one 12. The output end of the stepping motor one 14 is fixedly connected to the bottom of the middle limiting disk 17;

[0036] First, install the arc-shaped curved wood decorative board inside the fixing structure 2, and then start the stepping motor one 14 to make the rotating shaft one 13 rotate, thereby driving the middle limiting disk 17 to rotate. Drive the middle gear 16 to rotate through the middle limiting disk 17. When the middle gear 16 rotates, drive the internal toothed belt 18 to rotate, thereby making the left and right gears 16 rotate. Drive the connecting shaft 15 at the top of the gear 16 to rotate through the rotation of the gear 16, thereby driving the fixing structure 2 and the painting structure 3 to rotate. When the fixing structure 2 and the painting structure 3 rotate to 180°, stop the stepping motor one 14, so that the other side of the arc-shaped curved wood decorative board can be painted.

[0037] As Figures 3 - 6As shown in the figure, the fixing structure 2 includes a mounting plate 21. The bottoms of the two mounting plates 21 are fixedly connected to the tops of the left and right connecting shafts 15. Installation grooves 22 are formed on both the left and right sides of the top of the mounting plate 21. A second motor housing 23 is fixedly connected to the left front of the mounting plate 21. Rectangular through-holes 202 penetrating to the inside of the right installation groove 22 are formed on both the front and rear sides of the right side of the inner wall of the left installation groove 22. A circular movable hole three penetrating to the inside of the second motor housing 23 is formed on the front side of the inner wall of the left installation groove 22. A second rotating shaft 24 is movably connected to the inner wall of the circular movable hole three. A second stepper motor 25 is fixedly connected to the front end of the second rotating shaft 24. The bottom of the second stepper motor 25 is fixedly connected to the inner wall of the second motor housing 23. A bidirectional threaded rod 26 is fixedly connected to the rear end of the second rotating shaft 24. A support sleeve 27 is movably connected to the middle position of the outer wall of the bidirectional threaded rod 26. The outer wall of the support sleeve 27 is fixedly connected to the inner wall of the left installation groove 22. The rear end of the bidirectional threaded rod 26 is rotatably connected to the inner wall of the left installation groove 22. Two symmetrical slider ones 28 are threadedly connected to the outer wall of the bidirectional threaded rod 26. A connecting block 203 is fixedly connected to the right side of the slider one 28. A first sliding sleeve 20 is fixedly connected to the right side of the connecting block 203. A first sliding rod 29 is movably connected to the inner walls of the two first sliding sleeves 20. The front and rear ends of the first sliding rod 29 are fixedly connected to the inner wall of the right installation groove 22. The outer wall of the connecting block 203 is movably connected to the inner wall of the rectangular through-hole 202. Fixing rods 201 are fixedly connected to the tops of the first sliding sleeve 20 and the slider one 28. The coating structure 3 includes a guiding component 31. A driving component 32 is arranged inside the guiding component 31. Two symmetrical electrostatic powder coating mechanisms 33 are fixedly connected to the left and right sides of the driving component 32. The guiding component 31 includes a mounting frame 311. Arc-shaped guiding holes 312 penetrating to the inside are formed on both the upper and lower sides of the mounting frame 311. A first connecting plate 313 is fixedly connected to the bottom of the mounting frame 311. The bottom of the first connecting plate 313 is fixedly connected to the top of the middle connecting shaft 15. The driving component 32 includes two rectangular troughs 321. The mutually remote sides of the upper and lower rectangular troughs 321 are fixedly connected to the inner wall of the mounting frame 311. A third motor housing 322 is fixedly connected to the front side of the upper rectangular trough 321. A circular movable hole four penetrating to the inside of the third motor housing 322 is formed on the front side of the inner wall of the upper rectangular trough 321. A third rotating shaft 323 is movably connected to the inner wall of the circular movable hole four. A third stepper motor 324 is fixedly connected to the front end of the third rotating shaft 323. The bottom of the third stepper motor 324 is fixedly connected to the inner wall of the third motor housing 322. A lead screw 325 is fixedly connected to the rear end of the third rotating shaft 323. A slider two 326 is threadedly connected to the outer wall of the lead screw 325. A fixing plate 329 is fixedly connected to the left side of the slider two 326. A second sliding sleeve 328 is fixedly connected to the lower right side of the fixing plate 329. A second sliding rod 327 is movably connected to the inner wall of the second sliding sleeve 328. The front and rear ends of the second sliding rod 327 are fixedly connected to the inner wall of the lower rectangular trough 321. Circular movable holes five penetrating to the left are formed on the upper and lower sides of the front and rear sides of the right side of the fixing plate 329.The inner wall of the circular movable hole five is movably connected with a movable rod 320. Both the left and right ends of the four movable rods 320 are fixedly connected with a second connecting plate 3201. One side of the two second connecting plates 3201 away from each other is fixedly connected with one side of the two electrostatic powder coating mechanisms 33 close to each other. The right side of the left second connecting plate 3201 is fixedly connected with an extension plate 3202. One side of the extension plate 3202 away from the left second connecting plate 3201 is fixedly connected with a guide rod 3203. The upper and lower sides of the outer wall of the guide rod 3203 are movably connected with the inner wall of the arc-shaped guide hole 312;

[0038] Place the arc-shaped curved wood decorative board on the top of the mounting plate 21, and then start the second stepping motor 25 to make the second rotating shaft 24 rotate, thereby driving the bidirectional threaded rod 26 to rotate. By rotating the bidirectional threaded rod 26, the two first sliders 28 move inward and outward simultaneously on the outer wall of the bidirectional threaded rod 26, thereby driving the connecting block 203 to slide on the inner wall of the rectangular through hole 202. By moving the connecting block 203, the first sliding sleeve 20 moves on the outer wall of the first sliding rod 29. By moving the first sliders 28 and the first sliding sleeve 20, the fixed rod 201 on their top clamps and fixes the arc-shaped curved wood decorative board to adapt to boards of different thicknesses. At the same time, start the third stepping motor 324 in the driving assembly 32 to make the third rotating shaft 323 rotate, and then the lead screw 325 rotates accordingly. The second slider 326 moves linearly along the thread of the lead screw 325 and drives the fixed plate 329 to move, thereby driving the second sliding sleeve 328 to move on the outer wall of the second sliding rod 327. By moving the fixed plate 329, the movable rod 320 is driven to move, thereby moving the second connecting plates 3201 at both ends of the movable rod 320. By moving the left second connecting plate 3201, the extension plate 3202 and the guide rod 3203 are driven to move, thereby making the guide rod 3203 slide on the inner wall of the arc-shaped guide hole 312, and making the second connecting plate 3201 drive the electrostatic powder coating mechanism 33 to perform an arc motion, so as to ensure that the electrostatic powder coating mechanism 33 can evenly coat the arc-shaped curved wood decorative board, realize the precise coating of the arc-shaped curved wood decorative board, and improve the coating quality and efficiency.

[0039] In addition, the present invention also relates to a method for using an electrostatic powder coating device for arc-shaped curved wood decorative boards, including the following steps:

[0040] Step 1: Place the arc-shaped curved wood decorative board to be coated on the top of the mounting plate 21 in the fixing structure 2, and then start the second stepping motor 25 to make the fixed rod 201 fix the arc-shaped curved wood decorative board;

[0041] Step 2: Start the third stepping motor 324 in the driving assembly 32 to drive the electrostatic powder coating mechanism 33 to perform uniform coating along the surface of the board;

[0042] Step 3: After one side of the arc-shaped curved wood decorative board is painted, start the first stepping motor 14 to rotate the fixing structure 2 and the painting structure 3, and rotate both the fixing structure 2 and the painting structure 3 by 180°, so as to paint the other side of the arc-shaped curved wood decorative board;

[0043] Step 4: After the painting is completed, turn off the third stepping motor 324 and the second stepping motor 25, and then take out the painted board from the top of the fixing structure 2 for subsequent curing treatment.

[0044] The working principle of the present invention: First, install the arc-shaped curved wood decorative board inside the fixing structure 2, and then start the first stepping motor 14 to rotate the first rotating shaft 13, which in turn drives the middle limiting disc 17 to rotate. The middle gear 16 is driven to rotate through the middle limiting disc 17. When the middle gear 16 rotates, it drives the inner tooth belt 18 to rotate, thereby causing the left and right gears 16 to rotate. The connecting shafts 15 at the tops of the gears 16 are driven to rotate through the rotation of the gears 16, thereby driving the fixing structure 2 and the painting structure 3 to rotate. When the fixing structure 2 and the painting structure 3 rotate to 180°, stop the first stepping motor 14, so that the other side of the arc-shaped curved wood decorative board can be painted.

[0045] Place the arc-shaped curved wood decorative board on the top of the mounting plate 21, and then start the second stepping motor 25 to rotate the second rotating shaft 24, which in turn drives the bidirectional threaded rod 26 to rotate. By rotating the bidirectional threaded rod 26, two first sliders 28 move inward and outward simultaneously on the outer wall of the bidirectional threaded rod 26, thereby driving the connecting block 203 to slide on the inner wall of the rectangular through hole 202. The first sliding sleeve 20 is driven to move on the outer wall of the first sliding rod 29 through the movement of the connecting block 203. The fixing rod 201 at the top is driven by the movement of the first sliders 28 and the first sliding sleeve 20 to clamp and fix the arc-shaped curved wood decorative board to adapt to boards of different thicknesses. At the same time, start the third stepping motor 324 to rotate the third rotating shaft 323, and the lead screw 325 rotates accordingly. The second slider 326 moves linearly along the thread of the lead screw 325 and drives the fixed plate 329 to move, thereby driving the second sliding sleeve 328 to move on the outer wall of the second sliding rod 327. The movable rod 320 is driven to move through the movement of the fixed plate 329, so that the connecting plates 3201 at both ends of the movable rod 320 move. The extension plate 3202 and the guide rod 3203 are driven to move through the movement of the left connecting plate 3201, so that the guide rod 3203 slides on the inner wall of the arc-shaped guide hole 312, and the connecting plate 3201 drives the electrostatic powder coating mechanism 33 to perform an arc movement, ensuring that the electrostatic powder coating mechanism 33 can evenly paint the arc-shaped curved wood decorative board, achieving precise painting of the arc-shaped curved wood decorative board and improving the painting quality and efficiency.

[0046] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms such as "up", "down", "left", and "right" are only used to represent the relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may change;

[0047] Second, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present invention are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An electrostatic powder coating equipment for arc-shaped curved wood decorative boards, comprising a driving structure (1), characterized in that: On both the left and right sides of the top of the driving structure (1), a fixing structure (2) is fixedly connected. At the middle position of the top of the driving structure (1), a painting structure (3) is fixedly connected. A protective shell (4) is fixedly connected to the top of the driving structure (1). Observation doors (5) are arranged on both the left and right sides of the protective shell (4), and observation windows (6) are arranged on both the front and back sides of the protective shell (4). The driving structure (1) includes a base (11). Three circular moving holes one that horizontally penetrate through to the inside are opened at the top of the base (11). A connecting shaft (15) is movably connected to the inner wall of the circular moving hole one. A gear (16) is fixedly connected to the bottom of the connecting shaft (15). A limiting disc (17) is fixedly connected to the bottom of the gear (16). The outer walls of the three gears (16) are meshed with an internal toothed belt (18). The fixing structure (2) includes a mounting plate (21). The bottoms of the two mounting plates (21) are fixedly connected to the tops of the left and right connecting shafts (15). Mounting grooves (22) are opened on both the left and right sides of the top of the mounting plate (21). A motor housing two (23) is fixedly connected to the front left side of the mounting plate (21). Rectangular through holes (202) that penetrate through to the inside of the right mounting groove (22) are opened on both the front and back sides of the right side of the inner wall of the left mounting groove (22). The painting structure (3) includes a guiding component (31). A driving component (32) is arranged inside the guiding component (31). Two symmetrical electrostatic powder painting mechanisms (33) are fixedly connected to the left and right sides of the driving component (32). The guiding component (31) includes a mounting frame (311). Arc-shaped guiding holes (312) that penetrate through to the inside are opened on both the upper and lower sides of the mounting frame (311). A connecting plate one (313) is fixedly connected to the bottom of the mounting frame (311). The bottom of the connecting plate one (313) is fixedly connected to the top of the middle connecting shaft (15). The driving component (32) includes two rectangular troughs (321). The mutually remote sides of the upper and lower rectangular troughs (321) are fixedly connected to the inner wall of the mounting frame (311). A motor housing three (322) is fixedly connected to the front side of the upper rectangular trough (321). A circular moving hole four that penetrates through to the inside of the motor housing three (322) is opened on the front side of the inner wall of the upper rectangular trough (321). A rotating shaft three (323) is movably connected to the inner wall of the circular moving hole four. A stepping motor three (324) is fixedly connected to the front end of the rotating shaft three (323). The bottom of the stepping motor three (324) is fixedly connected to the inner wall of the motor housing three (322). A screw rod (325) is fixedly connected to the rear end of the third rotating shaft (323). A second slider (326) is threadedly connected to the outer wall of the screw rod (325). A fixing plate (329) is fixedly connected to the left side of the second slider (326). A second sliding sleeve (328) is fixedly connected to the lower right side of the fixing plate (329). A second sliding rod (327) is movably connected to the inner wall of the second sliding sleeve (328). The front and rear ends of the second sliding rod (327) are fixedly connected to the inner wall of the lower rectangular groove body (321). Circular moving holes five penetrating to the left are formed in the upper and lower sides of the front and rear sides of the right side of the fixing plate (329). A moving rod (320) is movably connected to the inner wall of the circular moving hole five. Connecting plates two (3201) are fixedly connected to the left and right ends of the four moving rods (320). One side of the two connecting plates two (3201) away from each other is fixedly connected to one side of the two electrostatic powder coating mechanisms (33). An extension plate (3202) is fixedly connected to the right side of the left connecting plate two (3201). A guiding rod (3203) is fixedly connected to the side of the extension plate (3202) away from the left connecting plate two (3201). The upper and lower sides of the outer wall of the guiding rod (3203) are movably connected to the inner wall of the arc-shaped guiding hole (312).

2. The electrostatic powder coating equipment for an arc-shaped curved wood decorative board according to claim 1, characterized in that: A first motor housing (12) is fixedly connected to the bottom of the inner wall of the base (11). A circular moving hole two penetrating to the inside is formed in the top of the first motor housing (12). A first rotating shaft (13) is movably connected to the inner wall of the circular moving hole two. A first stepping motor (14) is fixedly connected to the bottom of the first rotating shaft (13). The bottom of the first stepping motor (14) is fixedly connected to the inner wall of the first motor housing (12). The output end of the first stepping motor (14) is fixedly connected to the bottom of the middle limiting disc (17).

3. An electrostatic powder coating equipment for arc-shaped curved wood decorative boards according to claim 1, characterized in that: A circular moving hole three penetrating to the inside of the second motor housing (23) is formed in the front side of the inner wall of the left mounting groove (22). A second rotating shaft (24) is movably connected to the inner wall of the circular moving hole three. A second stepping motor (25) is fixedly connected to the front end of the second rotating shaft (24). The bottom of the second stepping motor (25) is fixedly connected to the inner wall of the second motor housing (23).

4. An electrostatic powder coating device for an arc-shaped curved wood decorative board according to claim 3, characterized in that: A bidirectional threaded rod (26) is fixedly connected to the rear end of the second rotating shaft (24). A support sleeve (27) is movably connected to the middle position of the outer wall of the bidirectional threaded rod (26). The outer wall of the support sleeve (27) is fixedly connected to the inner wall of the left mounting groove (22). The rear end of the bidirectional threaded rod (26) is rotatably connected to the inner wall of the left mounting groove (22).

5. An electrostatic powder coating device for arc-shaped curved wood decorative boards according to claim 4, characterized in that: The outer wall of the bidirectional threaded rod (26) is threadedly connected with two symmetrical first sliders (28). The right side of the first slider (28) is fixedly connected with a connecting block (203). The right side of the connecting block (203) is fixedly connected with a first sliding sleeve (20). The inner walls of the two first sliding sleeves (20) are movably connected with a first sliding rod (29). The front and rear ends of the first sliding rod (29) are fixedly connected with the inner wall of the right mounting groove (22). The outer wall of the connecting block (203) is movably connected with the inner wall of the rectangular through hole (202). Fixing rods (201) are fixedly connected to the tops of the first sliding sleeve (20) and the first slider (28).

6. A method for using an electrostatic powder coating device for arc-shaped curved wood decorative boards, applicable to the electrostatic powder coating device for arc-shaped curved wood decorative boards according to any one of claims 1-5, characterized in that: It includes the following steps: Step 1: Place the arc-shaped curved wood decorative board to be coated on the top of the mounting plate (21) in the fixing structure (2), and then start the second stepping motor (25) so that the fixing rod (201) fixes the arc-shaped curved wood decorative board. Step 2: Start the third stepping motor (324) in the driving assembly (32) to drive the electrostatic powder coating mechanism (33) to uniformly coat along the surface of the board. Step 3: When one side of the arc-shaped curved wood decorative board is coated, start the first stepping motor (14) so that the fixing structure (2) and the coating structure (3) rotate, and rotate both the fixing structure (2) and the coating structure (3) by 180° to coat the other side of the arc-shaped curved wood decorative board. Step 4: After the coating is completed, turn off the third stepping motor (324) and the second stepping motor (25), and then take out the coated board from the top of the fixing structure (2) for subsequent curing treatment.

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