Transformer insulating plate and spraying device and spraying method thereof

Abstract

The invention discloses a transformer insulating plate and a spraying device and method thereof.The transformer insulating plate comprises a machining table, the machining table is provided with a clamping mechanism used for clamping a base material, the end of the machining table is connected with a side plate, the side plate is connected with a movable L-shaped plate, the L-shaped plate is connected with a movable spraying head, and the spraying head is connected with a spraying head. The spraying head is connected with a driving mechanism used for driving the spraying head to reciprocate, the second screw is used for driving the threaded block to reciprocate, the spraying head is connected to the threaded block, the toothed plate is connected with a pushing mechanism used for driving the L-shaped plate to reciprocate, the side face of the L-shaped plate is connected with a lower gear, and the rotating wheel is in transmission connection with the lower gear. The L-shaped plate is connected with a switching mechanism used for switching the steering direction of the upper gear. According to the spraying device, comprehensive and uniform spraying operation on a base material is facilitated, further, a scraping plate scrapes spraying materials attached to the inner sides of the side plates, manual operation is not needed, time and labor are saved, and then the machining efficiency of the base material is improved.

Description

Technical Field

[0001] This invention relates to the field of transformer insulation board processing technology, specifically to a transformer insulation board and its spraying device and spraying method. Background Technology

[0002] Transformer insulation boards are critical insulating components inside oil-immersed transformers, typically made of high-density laminated insulating paperboard. They possess high mechanical strength, excellent electrical insulation properties, resistance to heat aging, and long-term tolerance to transformer oil corrosion. Their main functions are to form primary and longitudinal insulation barriers, isolate high- and low-voltage windings, support windings and leads, and ensure insulation distances, thereby guaranteeing the safe and stable operation of the transformer.

[0003] During the processing of transformer insulation boards, spraying is required to improve their inherent insulation performance and adapt to complex operating environments. Current spraying methods typically involve manually applying a handheld spray gun to the surface of the board. This is not only cumbersome and reduces processing efficiency, but also causes fluctuations in the spray gun's position due to constant back-and-forth movement, resulting in uneven coating on the board surface, affecting processing accuracy, and hindering subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a transformer insulation board and its spraying device and spraying method, which facilitates comprehensive and uniform spraying of the substrate. The scraper removes the sprayed material adhering to the inner side of the side plate without manual operation, saving time and effort, thereby improving the processing efficiency of the substrate and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a transformer insulation board, comprising a substrate, characterized in that the two sides of the substrate are provided with a bottom layer, an intermediate layer and a top layer from the inside to the outside.

[0006] A transformer insulation board according to claim 1, comprising a substrate, wherein a bottom layer, an intermediate layer and a top layer are sequentially disposed on both sides of the substrate from the inside to the outside.

[0007] Preferably, the bottom layer is epoxy resin, polyester resin or polyurethane resin, the middle layer is epoxy paint, polyurethane paint or silicone paint layer, and the top layer is an anti-corona coating.

[0008] A coating device for transformer insulation boards includes a processing table with a clamping mechanism for clamping a substrate. A side plate is connected to one end of the processing table, and a movable L-shaped plate is connected to the side plate. A movable spray head is connected to the L-shaped plate, and a driving mechanism is connected to the spray head for reciprocating movement. The driving mechanism includes a screw, a threaded block, and an upper gear. The upper gear drives the screw to rotate, and the screw drives the threaded block to reciprocate. The spray head is connected to the threaded block. A toothed plate is connected to the side of the side plate, and a pushing mechanism is connected to the toothed plate for reciprocating movement. The pushing mechanism includes a motor, a rotating wheel, and a traveling wheel. The motor drives the rotating wheel and the traveling wheel to rotate synchronously. The traveling wheel is connected to the toothed plate. A lower gear is connected to the side of the L-shaped plate, and the rotating wheel is driven by the lower gear. A switching mechanism is connected to the L-shaped plate for switching the direction of the upper gear.

[0009] Preferably, multiple clamping mechanisms are provided, and each clamping mechanism includes a clamping block, a screw, a guide seat, and a rectangular groove. The rectangular groove is provided on the processing table, the clamping block is slidably connected to the rectangular groove, the guide seat is fixed to the processing table, the screw is threadedly connected to the guide seat, and the end of the screw is rotatably connected to the clamping block.

[0010] Preferably, the L-shaped plate is provided with a guide groove, the threaded block is slidably connected to the guide groove, the second screw is threadedly connected to the threaded block, and one end of the second screw is rotatably connected to the L-shaped plate, while the other end is connected to the upper gear.

[0011] Preferably, the switching mechanism includes a switching wheel, a moving block, a sliding column, a horizontal groove, an inclined groove, a connecting rod, a second sliding block, a vertical groove, a cylinder, and a first sliding block. The horizontal groove and the vertical groove are disposed on an L-shaped plate. The first sliding block is slidably connected to the horizontal groove, the second sliding block is slidably connected to the vertical groove, the inclined groove is disposed on the moving block, the sliding column is slidably connected to the inclined groove, the two ends of the connecting rod are connected to the sliding column and the second sliding block, the switching wheel is rotatably connected to the first sliding block, the lower gear is rotatably connected to the second sliding block, and the cylinder is connected in the vertical groove, with the power output end of the cylinder connected to the second sliding block.

[0012] Preferably, a control switch is connected inside the L-shaped plate, a button is provided on the side of the control switch, and the control switch is electrically connected to the cylinder. The L-shaped plate is provided with a rectangular hole, and a connecting rod is slidably connected to the rectangular hole. The end of the connecting rod is connected to the control switch, and a positioning nut is threaded onto the connecting rod.

[0013] Preferably, the rotating wheel and the lower gear are connected by a belt drive. The L-shaped plate is connected to a tensioning mechanism for belt tensioning. The tensioning mechanism includes a tensioning wheel, a wheel seat, a slide groove, two guide posts, and two springs. The tensioning wheel presses against the belt and is rotatably connected to the wheel seat. The wheel seat is slidably connected to the L-shaped plate. One end of the guide post is connected to the wheel seat, and the other end is slidably connected to the L-shaped plate. The spring is sleeved on the guide post, and both ends of the spring are connected to the wheel seat and the L-shaped plate.

[0014] Preferably, the side plate is connected to a scraping mechanism, which includes a movable plate, a scraping plate, positioning bolts, multiple positioning grooves, a connecting plate, two arc-shaped scraping surfaces, and two receiving grooves. The movable plate is connected to an L-shaped plate, the bottom of the connecting plate is connected to the scraping plate, and the top of the connecting plate is inserted into the movable plate. The positioning grooves are located on the side of the connecting plate, the ends of the positioning bolts match the positioning grooves, and the positioning bolts are threadedly connected to the movable plate. The arc-shaped scraping surfaces are located on the scraping plate and press against the side plate. The receiving grooves are located at the inner bottom of the scraping plate.

[0015] A spraying method for a transformer insulation board spraying device includes the following steps:

[0016] Step 1: Place the substrate on the processing table and use the clamping mechanism to clamp and limit the substrate. At the same time, adjust the position of the scraper to make the scraper as close to the substrate as possible, and rotate the positioning bolt to limit the scraper.

[0017] Step 2: The motor drives the rotating wheel and the traveling wheel to rotate synchronously. The traveling wheel cooperates with the toothed plate to drive the L-shaped plate to move forward. The rotating wheel drives the lower gear to rotate through the belt. The lower gear drives the upper gear to rotate. The upper gear drives the screw to rotate, so that the threaded block and the spray head move forward synchronously. When the threaded block is connected to the control switch, the control cylinder is opened. The cylinder pulls the lower gear down, so that the lower gear and the upper gear are separated. The sliding block applies a downward pulling force to the sliding column, so that the sliding column slides relative to the inclined groove, driving the switching wheel to move forward, so that the switching wheel is connected to the lower gear and the upper gear, realizing the rotation of the upper gear and the screw, that is, the rotation of the spray head. This facilitates the back-and-forth movement of the spray head, realizes uniform and comprehensive spraying treatment of the substrate, and improves the processing quality.

[0018] Step 3: As the L-shaped plate moves forward, it drives the scraper plate forward, allowing the scraper plate to scrape off the sprayed material adhering to the inside of the side plate. This process requires no manual operation, saving time and effort, and thus improving the processing efficiency of the substrate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is equipped with a driving mechanism, a pushing mechanism, a switching mechanism, and a scraping mechanism. The pushing mechanism pushes the L-shaped plate forward, the rotating wheel drives the lower gear to rotate via a belt, the lower gear drives the upper gear to rotate, and the upper gear drives the screw to rotate, so that the threaded block and the spray head move forward synchronously. With the use of the switching mechanism, the spray head moves back and forth during the forward movement of the L-shaped plate, which facilitates the comprehensive and uniform spraying operation on the substrate. Furthermore, the scraper removes the spray material adhering to the inner side of the side plate without manual operation, saving time and effort, thereby improving the processing efficiency of the substrate and making it highly practical. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the scraping mechanism of the present invention;

[0022] Figure 3 for Figure 1 A partial view;

[0023] Figure 4 This is a bottom-view structural diagram of the present invention;

[0024] Figure 5 This is a schematic diagram of the control switch structure of the present invention;

[0025] Figure 6 This is a rear perspective view of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the upper gear and the lower gear of the present invention;

[0027] Figure 8 for Figure 7 A partial view;

[0028] Figure 9 This is a schematic diagram of the tensioning mechanism structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the left-side structure of the present invention;

[0030] Figure 11 This is a schematic diagram of the connection structure between the traveling wheel and the toothed plate of the present invention;

[0031] Figure 12 This is a schematic diagram of the connection structure between the nozzle and the L-shaped plate of the present invention;

[0032] Figure 13 This is a schematic diagram of the insulating plate structure of the present invention.

[0033] In the diagram: 1. Processing table; 2. Side plate; 3. Guide rail; 4. L-shaped plate; 5. Spray head; 6. Moving plate; 7. Scraper; 8. Clamping block; 9. Screw one; 10. Guide seat; 11. Substrate; 12. Bottom layer; 13. Middle layer; 14. Top layer; 15. Guide groove; 16. Screw two; 17. Positioning nut; 18. Connecting rod; 19. Control switch; 20. Button; 21. Rectangular hole; 22. Positioning bolt; 23. Positioning groove; 24. Connecting plate; 25. Arc-shaped scraper surface; 26. Receiving groove; 27. Mounting base; 28. Upper gear; 29. ​​Tooth plate; 30. Lower gear; 31. Switching wheel; 32. Moving block; 33. Sliding column; 34. Horizontal groove; 35. Inclined groove; 36. Connecting rod; 37. Sliding block two; 38. Vertical groove; 39. Cylinder; 40. Tensioning wheel; 41. Motor; 42. Wheel seat; 43. Sliding groove; 44. Guide column; 45. Spring; 46. Threaded block; 47. Rotating wheel; 48. Traveling wheel. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1 to 13 The present invention provides a transformer insulation board, including a substrate 11, wherein a bottom layer 12, a middle layer 13 and a top layer 14 are sequentially disposed on both sides of the substrate 11 from the inside to the outside.

[0036] The bottom layer 12 is made of epoxy resin, polyester resin or polyurethane resin, which fills the tiny pores and fiber gaps in the substrate 11 itself, improves the mechanical strength and integrity of the surface, and provides a dense and smooth surface for the adhesion of subsequent coatings.

[0037] The intermediate layer 13 is an epoxy varnish, polyurethane varnish, or silicone varnish layer with a certain thickness, which improves the electrical insulation strength of the surface and prevents surface flashover and breakdown.

[0038] The top layer 14 is an anti-corona coating. In high-voltage areas, special coatings containing fillers such as mica and alumina are used. These flake or functional fillers can effectively extend the arc path and suppress corona discharge.

[0039] A coating device for transformer insulation boards includes a processing table 1, which is equipped with a clamping mechanism for clamping a substrate 11. A side plate 2 is connected to one end of the processing table 1, and a movable L-shaped plate 4 is connected to the side plate 2. A movable spray head 5 is connected to the L-shaped plate 4, and the spray head 5 is connected to a driving mechanism for reciprocating movement. The driving mechanism includes a second screw 16, a threaded block 46, and an upper gear 28. The upper gear 28 drives the second screw 16 to rotate, and the second screw 16 drives the threaded block 46 to reciprocate. The nozzle 5 is connected to the threaded block 46. The side of the side plate 2 is connected to the toothed plate 29. The toothed plate 29 is connected to a pushing mechanism for driving the L-shaped plate 4 to reciprocate. The pushing mechanism includes a motor 41, a rotating wheel 47, and a traveling wheel 48. The motor 41 drives the rotating wheel 47 and the traveling wheel 48 to rotate synchronously. The traveling wheel 48 is connected to the toothed plate 29. The side of the L-shaped plate 4 is connected to the lower gear 30. The rotating wheel 47 is connected to the lower gear 30 for transmission. The L-shaped plate 4 is connected to a switching mechanism for switching the direction of the upper gear 28.

[0040] Multiple clamping mechanisms are provided, each including a clamping block 8, a screw 9, a guide seat 10, and a rectangular slot. The rectangular slot is located on the processing table 1, the clamping block 8 is slidably connected to the rectangular slot, the guide seat 10 is fixed to the processing table 1, the screw 9 is threadedly connected to the guide seat 10, and the end of the screw 9 is rotatably connected to the clamping block 8. Typically, two clamping mechanisms are provided, maintaining a certain distance between them. The substrate 11 is placed on the processing table 1, with its end abutting against the side plate 2. Rotating the screw 9 drives the clamping block 8 forward, pressing it against the substrate 11, thus locking and fixing the substrate 11 and improving its stability.

[0041] Once the substrate 11 is in the positioning state, the L-shaped plate 4 moves from one end of the processing table 1 to the other. This pushes the mechanism to drive the lower gear 30 to rotate, which in turn drives the upper gear 28 to rotate, causing the screw 16 to rotate. This, in turn, drives the threaded block 46 and the spray head 5 to move forward. When the spray head 5 is connected to the control switch 19, the control switching mechanism is activated, causing the switching wheel 31 to connect synchronously with the lower gear 30 and the upper gear 28. This allows the upper gear 28 to rotate, driving the screw 16 to rotate and driving the spray head 5 to move back. In other words, during the forward movement of the L-shaped plate 4, it is convenient to drive the spray head 5 to move back and forth, achieving comprehensive and uniform spraying treatment of the substrate 11, improving processing quality and efficiency, and demonstrating strong practicality.

[0042] The L-shaped plate 4 has a guide groove 15. The threaded block 46 is slidably connected to the guide groove 15. The screw 16 is threadedly connected to the threaded block 46, and one end of the screw 16 is rotatably connected to the L-shaped plate 4, while the other end is connected to the upper gear 28. The guide groove 15 guides the threaded block 46, improving the stability of the reciprocating movement of the threaded block 46 and the nozzle 5.

[0043] The switching mechanism includes a switching wheel 31, a moving block 32, a sliding column 33, a horizontal groove 34, an inclined groove 35, a connecting rod 36, a second sliding block 37, a vertical groove 38, a cylinder 39, and a first sliding block. The horizontal groove 34 and the vertical groove 38 are set on the L-shaped plate 4. The first sliding block is slidably connected to the horizontal groove 34, and the second sliding block 37 is slidably connected to the vertical groove 38. The inclined groove 35 is set on the moving block 32, and the sliding column 33 is slidably connected to the inclined groove 35. The two ends of the connecting rod 36 are connected to the sliding column 33 and the second sliding block 37. The switching wheel 31 is rotatably connected to the first sliding block, and the lower gear 30 is rotatably connected to the second sliding block 37. The cylinder 39 is connected in the vertical groove 38, and the power output end of the cylinder 39 is connected to the second sliding block 37.

[0044] When the spray head 5 needs to rotate, the cylinder 39 drives the sliding block 37 to descend, which in turn drives the lower gear 30, the connecting rod 36, and the sliding column 33 to descend, so that the sliding column 33 slides relative to the inclined groove 35, driving the moving block 32 and the sliding block 1 to move forward. The sliding block 1 drives the switching wheel 31 to move forward, so that the switching wheel 31 is connected to the lower gear 30 and the upper gear 28, realizing the rotation of the upper gear 28, which makes the screw 16 rotate, thus facilitating the drive of the spray head 5 to move back, making the reciprocating movement of the spray head 5 flexible and convenient, and providing comprehensive spraying treatment for the substrate 11.

[0045] A control switch 19 is connected inside the L-shaped plate 4. A button 20 is provided on the side of the control switch 19, and the control switch 19 is electrically connected to the cylinder 39. The L-shaped plate 4 has a rectangular hole 21, and a connecting rod 18 is slidably connected to the rectangular hole 21. The end of the connecting rod 18 is connected to the control switch 19, and a positioning nut 17 is threaded onto the connecting rod 18. By loosening the positioning nut 17, the control switch 19 is released, allowing it to move back and forth along the length of the rectangular hole 21, changing its position to accommodate the spraying of substrates 11 of different widths. Once the control switch 19 is in the appropriate position, the positioning nut 17 is tightened to improve the stability of the control switch 19 installation.

[0046] The rotating wheel 47 and the lower gear 30 are connected by a belt drive. An L-shaped plate 4 connects to a tensioning mechanism for belt tensioning. This tensioning mechanism includes a tensioning wheel 40, a wheel seat 42, a groove 43, two guide posts 44, and two springs 45. The tensioning wheel 40 presses against the belt and is rotatably connected to the wheel seat 42. The wheel seat 42 is slidably connected to the L-shaped plate 4. One end of each guide post 44 is connected to the wheel seat 42, and the other end is slidably connected to the L-shaped plate 4. Springs 45 are fitted onto the guide posts 44, and both ends of the springs 45 are connected to the wheel seat 42 and the L-shaped plate 4. During operation, the springs 45 are always in a stretched state, continuously applying a leftward pulling force to the wheel seat 42, causing the tensioning wheel 40 to press against the belt, ensuring the belt remains relatively taut. When the lower gear 30 descends, the belt loosens, and the stretched springs 45 pull the tensioning wheel 40 to the left, keeping the belt taut and ensuring effective transmission between the rotating wheel 47 and the lower gear 30.

[0047] The guide post 44 ensures stable reciprocating movement of the tensioning wheel 40, preventing skewness and offset, and guaranteeing the connection between the tensioning wheel 40 and the belt.

[0048] The side plate 2 is connected to a scraping mechanism, which includes a moving plate 6, a scraping plate 7, a positioning bolt 22, multiple positioning grooves 23, a connecting plate 24, two arc-shaped scraping surfaces 25, and two receiving grooves 26. The moving plate 6 is connected to the L-shaped plate 4. The bottom of the connecting plate 24 is connected to the scraping plate 7, and the top is inserted into the moving plate 6. The positioning grooves 23 are located on the side of the connecting plate 24. The ends of the positioning bolts 22 match the positioning grooves 23, and the positioning bolts 22 are threadedly connected to the moving plate 6. The arc-shaped scraping surfaces 25 are located on the scraping plate 7 and are pressed against the side plate 2. The receiving grooves 26 are located at the bottom of the inside of the scraping plate 7.

[0049] Loosening the positioning bolt 22 loosens the scraper plate 7, changing its position and allowing the connecting plate 24 to slide within the moving plate 6. The scraper plate 7 is positioned as close as possible to the substrate 11 to ensure effective scraping. Once the scraper plate 7 is in the appropriate position, the positioning bolt 22 is tightened, connecting its end to the corresponding positioning groove 23. This limits the position of the connecting plate 24, improving the stability of the connection between the scraper plate 7 and the moving plate 6.

[0050] The scraper blade 7 maintains a certain distance from the L-shaped plate 4. When the L-shaped plate 4 moves forward, it simultaneously drives the scraper blade 7 forward, facilitating the scraping of the sprayed material on the inner side of the side plate 2. This eliminates the need for manual operation, saving time and effort, and thus improving the processing efficiency of the substrate 11. The scraped coating is temporarily stored in the receiving tank 26 for subsequent centralized processing. The arc-shaped scraper surface 25 has a certain degree of elasticity and is constantly pressed against the inner side of the side plate 2, thereby improving the scraping effect.

[0051] The top of the side plate 2 is connected to the guide rail 3. The L-shaped plate 4 and the movable plate 6 are slidably connected to the guide rail 3, which improves the stability of the reciprocating movement of the L-shaped plate 4 and the movable plate 6 and plays a good guiding role.

[0052] A spraying method for a transformer insulation board spraying device includes the following steps:

[0053] Step 1: Place the substrate 11 on the processing table 1, use the clamping mechanism to clamp and limit the substrate 11, at the same time, adjust the position of the scraper 7 so that the scraper 7 is as close as possible to the substrate 11, and rotate the positioning bolt 22 to limit the scraper 7.

[0054] Step 2: Motor 41 drives rotating wheel 47 and traveling wheel 48 to rotate synchronously. Traveling wheel 48 cooperates with toothed plate 29 to drive L-shaped plate 4 to move forward. Rotating wheel 47 drives lower gear 30 to rotate via belt. Lower gear 30 drives upper gear 28 to rotate. Upper gear 28 drives screw 16 to rotate, causing threaded block 46 and spray head 5 to move forward synchronously. When threaded block 46 is connected to control switch 19, control cylinder 39 is opened. Cylinder 39 pulls lower gear 30 down, causing lower gear 30 to separate from upper gear 28. Sliding block 37 applies downward pulling force to sliding column 33, causing sliding column 33 to slide relative to inclined groove 35, driving switching wheel 31 to move forward, connecting switching wheel 31 with lower gear 30 and upper gear 28, realizing the rotation of upper gear 28 and screw 16, that is, the rotation of spray head 5, which facilitates the back-and-forth movement of spray head 5, realizing uniform and comprehensive spraying treatment of substrate 11, and improving processing quality.

[0055] Step 3: During the forward movement of the L-shaped plate 4, the scraper plate 7 is moved forward, so that the scraper plate 7 scrapes off the sprayed material attached to the inner side of the side plate 2. No manual operation is required, saving time and effort, thereby improving the processing efficiency of the substrate 11.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer insulation board, comprising a substrate (11), characterized in that, The substrate (11) has a bottom layer (12), an intermediate layer (13), and a top layer (14) arranged sequentially from the inside to the outside on both sides.

2. The transformer insulation board according to claim 1, characterized in that, The bottom layer (12) is epoxy resin, polyester resin or polyurethane resin, the middle layer (13) is epoxy paint, polyurethane paint or silicone paint layer, and the top layer (14) is anti-corona coating.

3. The coating apparatus for a transformer insulation board according to claim 1, comprising a processing table (1), characterized in that, The processing table (1) is provided with a clamping mechanism for clamping the substrate (11), and a side plate (2) is connected to the end of the processing table (1). A movable L-shaped plate (4) is connected to the side plate (2), and a movable nozzle (5) is connected to the L-shaped plate (4). The nozzle (5) is connected to a driving mechanism for driving the nozzle (5) to reciprocate. The driving mechanism includes a screw (16), a threaded block (46), and an upper gear (28). The upper gear (28) is used to drive the screw (16) to rotate, and the screw (16) is used to drive the threaded block (46) to reciprocate. The nozzle (5) is connected to the threaded block. Block (46), the side of the side plate (2) is connected to a toothed plate (29), the toothed plate (29) is connected to a pushing mechanism for driving the L-shaped plate (4) to move back and forth, the pushing mechanism includes a motor (41), a rotating wheel (47) and a moving wheel (48), the motor (41) is used to drive the rotating wheel (47) and the moving wheel (48) to rotate synchronously, the moving wheel (48) is connected to the toothed plate (29), the side of the L-shaped plate (4) is connected to a lower gear (30), the rotating wheel (47) is connected to the lower gear (30) in a transmission connection, the L-shaped plate (4) is connected to a switching mechanism for switching the direction of the upper gear (28).

4. The spraying device for a transformer insulation board according to claim 3, characterized in that, The clamping mechanism is provided in multiple ways, and the clamping mechanism includes a clamping block (8), a screw (9), a guide seat (10), and a rectangular groove. The rectangular groove is provided on the processing table (1). The clamping block (8) is slidably connected to the rectangular groove. The guide seat (10) is fixed to the processing table (1). The screw (9) is threadedly connected to the guide seat (10), and the end of the screw (9) is rotatably connected to the clamping block (8).

5. The coating apparatus for a transformer insulation board according to claim 3, characterized in that, The L-shaped plate (4) is provided with a guide groove (15), the threaded block (46) is slidably connected to the guide groove (15), the screw (16) is threadedly connected to the threaded block (46), and one end of the screw (16) is rotatably connected to the L-shaped plate (4), and the other end is connected to the upper gear (28).

6. The coating apparatus for a transformer insulation board according to claim 3, characterized in that, The switching mechanism includes a switching wheel (31), a moving block (32), a sliding column (33), a horizontal groove (34), an inclined groove (35), a connecting rod (36), a second sliding block (37), a vertical groove (38), a cylinder (39), and a first sliding block. The horizontal groove (34) and the vertical groove (38) are set on the L-shaped plate (4). The first sliding block is slidably connected to the horizontal groove (34). The second sliding block (37) is slidably connected to the vertical groove (38). The inclined groove (35) is set on the moving block (32). The sliding column (33) is slidably connected to the inclined groove (35). The two ends of the connecting rod (36) are connected to the sliding column (33) and the second sliding block (37). The switching wheel (31) is rotatably connected to the first sliding block. The lower gear (30) is rotatably connected to the second sliding block (37). The cylinder (39) is connected in the vertical groove (38), and the power output end of the cylinder (39) is connected to the second sliding block (37).

7. The coating apparatus for a transformer insulation board according to claim 6, characterized in that, The L-shaped plate (4) is connected to a control switch (19). A button (20) is provided on the side of the control switch (19). The control switch (19) is electrically connected to the cylinder (39). The L-shaped plate (4) is provided with a rectangular hole (21). A connecting rod (18) is slidably connected to the rectangular hole (21). The end of the connecting rod (18) is connected to the control switch (19). A positioning nut (17) is threaded onto the connecting rod (18).

8. The coating apparatus for a transformer insulation board according to claim 3, characterized in that, The rotating wheel (47) is connected to the lower gear (30) via a belt drive. The L-shaped plate (4) is connected to a tensioning mechanism for belt tensioning. The tensioning mechanism includes a tensioning wheel (40), a wheel seat (42), a slide groove (43), two guide posts (44), and two springs (45). The tensioning wheel (40) is pressed against the belt and is rotatably connected to the wheel seat (42). The wheel seat (42) is slidably connected to the L-shaped plate (4). The end of the guide post (44) is connected to the wheel seat (42), and the other end is slidably connected to the L-shaped plate (4). The spring (45) is sleeved on the guide post (44), and both ends of the spring (45) are connected to the wheel seat (42) and the L-shaped plate (4).

9. The coating apparatus for a transformer insulation board according to claim 3, characterized in that, The side plate (2) is connected to a scraping mechanism, which includes a moving plate (6), a scraper (7), a positioning bolt (22), multiple positioning grooves (23), a connecting plate (24), two arc-shaped scraping surfaces (25), and two receiving grooves (26). The moving plate (6) is connected to the L-shaped plate (4). The bottom of the connecting plate (24) is connected to the scraper (7), and the top is inserted into the moving plate (6). The positioning groove (23) is located on the side of the connecting plate (24). The end of the positioning bolt (22) matches the positioning groove (23), and the positioning bolt (22) is threaded to the moving plate (6). The arc-shaped scraping surface (25) is located on the scraper (7), and the arc-shaped scraping surface (25) is pressed against the side plate (2). The receiving groove (26) is located at the bottom of the inside of the scraper (7).

10. The spraying method of the spraying apparatus for transformer insulation boards according to any one of claims 3-9, characterized in that, Includes the following steps: Step 1: Place the substrate (11) on the processing table (1), use the clamping mechanism to clamp and limit the substrate (11), and at the same time, adjust the position of the scraper (7) so that the scraper (7) is as close as possible to the substrate (11), and rotate the positioning bolt (22) to limit the scraper (7); Step 2: The motor (41) drives the rotating wheel (47) and the traveling wheel (48) to rotate synchronously. The traveling wheel (48) cooperates with the toothed plate (29) to drive the L-shaped plate (4) to move forward. The rotating wheel (47) drives the lower gear (30) to rotate through the belt. The lower gear (30) drives the upper gear (28) to rotate. The upper gear (28) drives the screw (16) to rotate, so that the threaded block (46) and the nozzle (5) move forward synchronously. When the threaded block (46) is connected to the control switch (19), the control cylinder (39) is opened. Pulling the lower gear (30) down causes the lower gear (30) to separate from the upper gear (28). The sliding block 2 (37) applies a downward pulling force to the sliding column (33), causing the sliding column (33) to slide relative to the inclined groove (35), driving the switching wheel (31) forward, so that the switching wheel (31) is connected to the lower gear (30) and the upper gear (28), realizing the rotation of the upper gear (28) and the screw 2 (16), that is, the rotation of the spray head (5), which facilitates the back-and-forth movement of the spray head (5), realizing uniform and comprehensive spraying treatment of the substrate (11), and improving the processing quality; Step 3: During the forward movement of the L-shaped plate (4), the scraper (7) is moved forward, so that the scraper (7) scrapes off the sprayed material attached to the inside of the side plate (2). No manual operation is required, saving time and effort, thereby improving the processing efficiency of the substrate (11).

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