High-speed enameled copper flat wire painting device and painting method thereof

Abstract

The invention relates to the technical field of enamelled wire painting, and particularly discloses a high-speed enamelled copper flat wire painting device and a painting method thereof.The high-speed enamelled copper flat wire painting device comprises a cylinder body, a pressing plate and a felt clamped between the pressing plate and the cylinder body, and further comprises a self-adaptive clamping mechanism arranged between the pressing plate and the cylinder body, the pressure sensor is used for applying adjustable wrapping pressure to the enameled wire penetrating through the felt and limiting multidirectional vibration of the enameled wire; the self-adaptive clamping mechanism comprises an elastic pressing assembly arranged on the pressing plate and anti-deviation guide wheel sets arranged on the two sides of the U-shaped long groove of the cylinder body. According to the high-speed enameled copper flat wire painting device and the painting method thereof, in the high-speed wire passing process of the enameled wire, the coating of the felt and the lateral guide wheels are coordinated and matched, the enameled wire is prevented from transversely swinging in the felt, meanwhile, the situation that the felt is jacked up by vertical shaking of the enameled wire is avoided, multidirectional shaking of the enameled wire in the painting process is remarkably reduced, and the painting quality is improved. And the wire rod runs more stably.

Description

Technical Field

[0001] This invention relates to the field of enameled wire coating technology, specifically to a high-speed enameled copper flat wire coating device and coating method. Background Technology

[0002] Enameled wire is a key insulation material for electrical equipment such as motors and transformers. Among them, enameled copper flat wire is widely used in high-current, high-power-density applications due to its high slot fill factor and good heat dissipation performance. The quality of the insulation layer of enameled flat wire directly affects the reliability and lifespan of electrical equipment, and the coating process is the core step that determines the uniformity of the insulation layer.

[0003] During high-speed coating, existing enameled wires are prone to lateral swaying and vertical vibration during traction, especially when the wire width-to-thickness ratio is large and the wire movement speed is too fast. The vibration of the wire is more significant. The multi-directional vibration of the wire will cause uneven wrapping pressure of the felt on the wire, which can easily lead to inconsistent varnish thickness and affect the uniformity of the insulation layer. Moreover, different specifications and materials of enameled flat wires have different requirements for coating pressure. The clamping mechanism of existing devices is mostly a rigid fixed structure, which makes it difficult to adaptively adjust the wrapping pressure according to the real-time running status of the wire or the width and thickness of different specifications of wires, which can easily lead to uneven coating or jamming. Summary of the Invention

[0004] This invention provides a high-speed enameled copper flat wire coating device and coating method, aiming to solve the problem in related technologies that enameled flat wires are prone to lateral swaying and vertical shaking during the traction process, making it difficult to adaptively adjust the wrapping pressure according to the fluctuation of wire size.

[0005] The high-speed enameled copper flat wire coating device of the present invention includes a cylinder, a pressure plate, and a felt sandwiched between the pressure plate and the cylinder. The pressure plate and the cylinder are provided with U-shaped grooves for the enameled wire to pass through. The device also includes: An adaptive clamping mechanism, located between the pressure plate and the cylinder, is used to apply adjustable wrapping pressure to the enameled wire passing through the felt and to limit its multi-directional vibration. The adaptive clamping mechanism includes an elastic clamping assembly mounted on the pressure plate and an anti-deviation guide wheel assembly mounted on both sides of the U-shaped groove in the cylinder. The elastic clamping assembly includes a clamping shaft, a tension spring, and a clamping block. The clamping shaft passes through the pressure plate and is connected to the clamping block. The tension spring is sleeved outside the clamping shaft and abuts against the pressure plate and the clamping shaft to adjust the pressure of the clamping block on the felt. The anti-deviation guide wheel assembly includes lateral guide wheels symmetrically arranged on opposite sides of the U-shaped long groove and a horizontal support wheel arranged at the bottom of the U-shaped long groove. The axis of the lateral guide wheel is perpendicular to the travel direction of the enameled wire, and the axis of the horizontal support wheel is parallel to the travel direction of the enameled wire. The elastic floating mechanism includes a sleeve, a support, and a spring. The sleeve is slidably fitted outside the sleeve, and the spring is fitted outside the sleeve with its two ends fixed to the sleeve and the support, respectively. The lateral guide wheel is rotatably mounted on the support.

[0006] Preferably, a frame is fixedly installed on the outer wall of the cylinder, and the pressure plate is slidably assembled in the frame; a lead screw is rotatably assembled inside the frame, and the sleeves corresponding to the two lateral guide wheels in the U-shaped long groove are threadedly connected to the lead screw to adjust the distance between the two lateral guide wheels.

[0007] Preferably, the clamping shaft includes a sliding shaft and a clamping bolt. The sliding shaft is fixed on the clamping block and extends to the outside of the pressure plate. The clamping bolt is threaded to the end of the clamping shaft. A tension spring is disposed between the pressure plate and the clamping bolt. The tension length of the tension spring is adjusted by rotating the clamping bolt.

[0008] Preferably, the system also includes a constant temperature paint supply system, which includes a paint supply pipeline, a paint return pipeline, and a temperature control device. The paint supply pipeline includes a paint supply tank, a paint pump, a fine filter, and a main paint supply pipe connected in sequence. The main paint supply pipe is connected to the inside of the cylinder through a distributor. The paint return pipeline is located at the bottom of the cylinder, and a return pipe connected to the return pipeline is inserted into the cylinder. The upper end of the return pipe is higher than the paint liquid level in the cylinder, and the lower end of the return pipe passes through the bottom of the cylinder and is connected to the main return pipeline. The temperature control device includes a heating jacket installed on the outer wall of the cylinder and a temperature sensor installed inside the paint supply tank.

[0009] Preferably, the upper opening of the return pipe is provided with an anti-vortex cover, which has an inverted bowl-shaped structure and multiple return holes on its side wall.

[0010] Preferably, a guide plate is provided inside the cylinder body, and the guide plate is inclinedly disposed at the bottom of the cylinder body, with the high end of the guide plate located at the paint supply inlet and the low end located at the paint return pipe.

[0011] Preferably, a gap adjustment mechanism is provided between the pressure plate and the cylinder body. The gap adjustment mechanism includes a connecting block, an adjusting screw and a threaded sleeve. The connecting block is fixed to the end of the pressure plate, the threaded sleeve is fixed to the side wall of the frame, the adjusting screw is rotatably assembled in the connecting block, and the bottom end of the adjusting screw is threadedly connected to the threaded sleeve.

[0012] A method for coating high-speed enameled copper flat wire includes the following steps: Adjustment steps: Adjust the distance between the two side guide wheels according to the width of the enameled wire, and adjust the gap between the pressure plate and the cylinder according to the thickness of the felt. At the same time, adjust the preload of the tension spring by rotating the clamping bolt. Paint supply procedure: Start the constant temperature paint supply system to evenly deliver the paint into the cylinder through the paint supply pipeline at the set temperature, and form a circulation flow through the paint return pipeline. Painting steps: Pass the enameled wire through the U-shaped groove and felt from bottom to top. The elastic clamping component keeps the clamping block under constant pressure on the felt. The lateral guide wheels of the anti-deviation guide wheel group restrict the lateral swing of the enameled wire. The horizontal support wheel supports the enameled wire and restricts vertical vibration, thereby achieving stable and uniform painting of the enameled wire.

[0013] Preferably, in the paint supply step, the paint temperature is kept constant by linking the heating jacket and the temperature sensor, and the eddies and bubbles generated during the paint return process are suppressed by the anti-eddy current cover.

[0014] Beneficial effects: 1. In use, the present invention, through the synergistic action of the elastic clamping component and the anti-deviation guide wheel group, enables the felt covering and the lateral guide wheel to work together during the high-speed passing of the enameled wire. This prevents the enameled wire from swinging laterally within the felt while also preventing the vertical vibration of the enameled wire from lifting the felt. This significantly limits and reduces the multi-directional vibration of the enameled wire during the coating process, making the wire run more smoothly, thereby improving the uniformity of the paint film, effectively eliminating wire vibration, and improving the stability of the coating.

[0015] 2. When in use, the elastic clamping component can adjust the preload, the anti-deviation guide wheel spacing is adjustable and has an elastic floating function, which can adapt to enameled flat wires of different widths and materials, and avoid uneven coating or jamming caused by wire size fluctuations or running vibrations.

[0016] 3. When in use, the present invention uses a heating jacket, temperature sensor and control system to keep the paint temperature constant and avoid viscosity changes caused by temperature fluctuations, thereby ensuring the consistency of paint application in long-term continuous production.

[0017] 4. When using this invention, an anti-vortex cover is installed on the paint return pipe to effectively suppress the generation of vortices and bubbles during the paint return process, and to prevent bubbles from being absorbed by the felt and causing defects in the paint film. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a perspective view of the invention from another angle.

[0020] Figure 3 This is the present invention. Figure 1 The front view.

[0021] Figure 4 This is a schematic diagram of the internal structure of the frame of the present invention.

[0022] Figure 5 This is the present invention. Figure 4 A magnified structural diagram of point A in the middle.

[0023] Figure 6 This is a top view of the present invention.

[0024] Figure 7 This is a perspective view of the elastic floating mechanism of the present invention.

[0025] Figure 8 This is a perspective view of the elastic clamping component of the present invention.

[0026] Figure label: 1. Enameled wire; 2. Pressure plate; 3. Felt; 4. Cylinder body; 41. U-shaped long groove; 42. Frame; 43. Lead screw; 44. Guide plate; 45. Support plate; 5. Paint return pipe; 51. Anti-vortex cover; 52. Liquid return hole; 6. Elastic clamping assembly; 61. Clamping shaft; 611. Sliding shaft; 612. Clamping bolt; 62. Tension spring; 63. Clamping block; 7. Anti-deviation guide wheel assembly; 71. Lateral guide wheel; 72. Horizontal 73. Support wheel; 731. Elastic floating mechanism; 732. Sleeve; 733. Support; 734. Spring; 8. Gap adjustment mechanism; 81. Connecting block; 82. Adjusting screw; 83. Threaded sleeve; 9. Paint supply pipeline; 91. Paint supply tank; 92. Paint pump; 93. Fine filter; 94. Main paint supply pipe; 95. Distributor; 10. Return paint pipeline; 11. Temperature control device; 111. Heating jacket; 112. Temperature sensor. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1 to 8 As shown, the high-speed enameled copper flat wire coating device of the present invention includes a cylinder 4, a pressure plate 2, a felt 3, and a return pipe 5. The pressure plate 2 and the cylinder 4 are provided with U-shaped long grooves 41 for the enameled wire 1 to pass through. A frame 42 is fixedly installed on the outer wall of the cylinder 4, and the pressure plate 2 is slidably assembled within the frame 42. The felt 3 is sandwiched between the pressure plate 2 and the cylinder 4, and the enameled wire 1 passes through the felt 3 from bottom to top. The return pipe 5 is installed inside the cylinder 4. An adaptive clamping mechanism is provided between the pressure plate 2 and the cylinder 4 for adaptive clamping of the enameled wire 1, effectively eliminating multi-directional vibration of the wire during the coating process and reducing the shaking of the enameled wire 1. A constant-temperature paint supply system is provided outside the cylinder 4 to provide constant-temperature paint supply inside the cylinder 4, avoiding viscosity changes caused by temperature fluctuations and ensuring consistent paint application.

[0029] refer to Figure 1 , Figure 3 as well as Figure 6The adaptive clamping mechanism includes an elastic clamping assembly 6 mounted on the pressure plate 2 and anti-deviation guide wheel sets 7 mounted on both sides of the U-shaped groove 41 of the cylinder body 4. The elastic clamping assembly 6 includes a clamping shaft 61, a tension spring 62, and a clamping block 63. The clamping shaft 61 passes through the pressure plate 2 and connects to the clamping block 63. The tension spring 62 is sleeved outside the clamping shaft 61 and abuts against the pressure plate 2 and the clamping shaft 61, applying a tension force towards the cylinder body 4 to the end of the clamping shaft 61 located outside the pressure plate 2, so that the side wall of the clamping block 63 keeps in contact with and clamps the felt 3. The preload of the tension spring 62 can be adjusted by the clamping shaft 61, thereby adjusting the wrapping pressure of the felt 3 on the enameled wire 1.

[0030] refer to Figure 1 and Figure 8 The clamping shaft 61 includes a sliding shaft 611 and a clamping bolt 612. The sliding shaft 611 is fixed on the clamping block 63 and extends to the outside of the pressure plate 2. The clamping bolt 612 is threaded to the end of the sliding shaft 611. The tension spring 62 is disposed between the pressure plate 2 and the clamping bolt 612. By rotating the clamping bolt 612, it can be moved into or out of the sliding shaft 611, thereby adjusting the tension length of the tension spring 62 and thus adjusting the preload applied by the tension spring 62 to the clamping shaft 61.

[0031] refer to Figure 3 , Figure 4 as well as Figure 6 The anti-deviation guide wheel assembly 7 includes lateral guide wheels 71 symmetrically arranged on opposite sides within the U-shaped long groove 41 and a horizontal support wheel 72 located at the bottom of the U-shaped long groove 41. The axis of the lateral guide wheels 71 is perpendicular to the travel direction of the enameled wire 1, used to limit the lateral sway of the enameled wire 1; the axis of the horizontal support wheel 72 is parallel to the travel direction of the enameled wire 1, used to support the weight of the enameled wire 1 and limit vertical vibration. The distance between the two lateral guide wheels 71 can be set to be slightly larger than the width of the enameled flat wire (usually 0.5-1mm larger), which serves a guiding function without generating additional frictional resistance. Support plates 45 located on one side of the U-shaped long groove 41 are slidably mounted on both the cylinder body 4 and the pressure plate 2 for supporting the rotation of the lateral guide wheels 71.

[0032] refer to Figure 5 and Figure 7The anti-deviation guide wheel assembly 7 is also equipped with an elastic floating mechanism 73, which allows the lateral guide wheel 71 to float elastically within a certain range to adapt to slight fluctuations in the width of the enameled flat wire. The elastic floating mechanism 73 includes a sleeve 731, a support 732, and a spring 733. The bottom end of the support plate 45 is mounted on the support 732, which is slidably fitted onto the outside of the sleeve 731. The spring 733 is fitted onto the outside of the sleeve 731, with both ends of the spring 733 fixed to the sleeve 731 and the support 732, respectively. The spring 733 is compressed by the sliding of the support 732 on the sleeve 731, allowing the lateral guide wheel 71 to move to a certain extent. When the wire width changes slightly or lateral vibration occurs, the lateral guide wheel 71 can automatically adjust its spacing to avoid... While the wire generates excessive compressive force, it can work in conjunction with the covering effect of the felt 3 to limit the lateral swing of the enameled wire 1 within the felt 3. This allows the elastic clamping component 6 to maintain a constant wrapping pressure of the felt 3 on the enameled wire 1 when the enameled wire 1 is traveling at high speed. The lateral guide wheel 71 of the anti-deviation guide wheel group 7 limits the lateral swing of the enameled wire 1, the horizontal support wheel 72 supports the enameled wire 1 and limits vertical vibration, and the elastic floating mechanism 73 allows the lateral guide wheel 71 to adaptively adjust the spacing according to the width fluctuation of the enameled wire 1. Thus, the multi-directional vibration of the enameled wire is suppressed under the combined action of the felt 3 covering and the guide wheel limiting.

[0033] The frame 42 is internally fitted with a lead screw 43. The sleeves 731 containing the two lateral guide wheels 71 in the U-shaped long groove 41 are threaded onto the lead screw 43. They can move in opposite directions as the lead screw 43 rotates, moving closer or further apart from each other. This allows the spacing between the two lateral guide wheels 71 to be adjusted according to the width of the enameled wire 1, so that the equipment can adapt to the painting operation of different types of enameled wire 1.

[0034] refer to Figure 2 , Figure 3 as well as Figure 6 The constant temperature paint supply system includes a paint supply pipeline 9, a paint return pipeline 10, and a temperature control device 11. The paint supply pipeline 9 includes a paint supply tank 91, a paint pump 92, a fine filter 93, and a main paint supply pipe 94 connected in sequence. The main paint supply pipe 94 is connected to the inside of the cylinder 4 via a distributor 95. The distributor 95 has multiple paint outlets evenly distributed along the length of the cylinder 4 to ensure uniform distribution of paint within the cylinder 4. The paint return pipeline 10 is located below the cylinder 4. The upper opening of the paint return pipe 5 is higher than the paint level inside the cylinder 4, and the lower end of the paint return pipe 5 passes through the bottom of the cylinder 4 and connects to the paint return pipeline 10.

[0035] refer to Figure 1 and Figure 6An anti-vortex hood 51 is installed at the upper opening of the paint return pipe 5. The anti-vortex hood 51 has an inverted bowl-shaped structure, and multiple return holes 52 are opened on the side wall of the anti-vortex hood 51. This structure can effectively prevent vortices and bubbles from being generated during the paint return process, and avoid bubbles being absorbed by the felt 3, which would affect the quality of the paint film.

[0036] refer to Figure 1 and Figure 6 Inside the cylinder 4, there is a guide plate 44, which is inclinedly positioned at the bottom of the cylinder 4. The high end of the guide plate 44 is located at the paint supply inlet, and the low end is located at the paint return pipe 5. This structure can guide the paint liquid to flow in a directional manner from the paint supply inlet to the paint return pipe 5, avoiding the paint liquid from stagnating in the dead corners of the cylinder 4, and improving the paint liquid circulation efficiency and uniformity.

[0037] refer to Figure 1 , Figure 2 as well as Figure 6 The temperature control device 11 includes a heating jacket 111 disposed on the outer wall of the cylinder 4 and a temperature sensor 112 disposed inside the paint supply tank 91. The heating jacket 111 is filled with a constant temperature medium (such as constant temperature water or heat transfer oil). The temperature sensor 112 monitors the temperature of the paint liquid in the paint supply tank 91 in real time and is linked with the control system. By adjusting the flow rate or temperature of the constant temperature medium, the temperature of the paint liquid is kept constant within the set value range.

[0038] refer to Figure 1 and Figure 2 A gap adjustment mechanism 8 is provided between the pressure plate 2 and the cylinder 4 to adjust the relative distance between the pressure plate 2 and the cylinder 4 to accommodate felt 3 of different thicknesses. The gap adjustment mechanism 8 includes a connecting block 81, an adjusting screw 82, and a threaded sleeve 83. The connecting block 81 is fixed to the end of the pressure plate 2, the threaded sleeve 83 is fixed to the side wall of the frame 42, the adjusting screw 82 is rotatably mounted in the connecting block 81, and the bottom end of the adjusting screw 82 is threadedly connected to the threaded sleeve 83. By rotating the adjusting screw 82 to move it within the threaded sleeve 83, the distance between the pressure plate 2 and the cylinder 4 can be changed so that the equipment can accommodate felt 3 of different thicknesses. The bottom end of the support plate 45 located on one side of the pressure plate 2 is slidably mounted on the support 732, so that the support plate 45 can slide within the support 732 when the pressure plate 2 moves, thus not affecting the movement of the pressure plate 2 when adjusting the distance between the pressure plate 2 and the cylinder 4.

[0039] A method for coating high-speed enameled copper flat wire includes the following steps: Adjustment steps: Adjust the distance between the two side guide wheels 71 according to the width of the enameled wire 1, and adjust the gap between the pressure plate 2 and the cylinder 4 according to the thickness of the felt 3. At the same time, adjust the preload of the tension spring 62 by rotating the clamping bolt 612. Paint supply procedure: Start the constant temperature paint supply system to evenly feed the paint into the cylinder 4 through the paint supply pipeline 9 at the set temperature, and form a circulation flow through the return paint pipeline 10. Painting steps: Pass the enameled wire 1 through the U-shaped long groove 41 and the felt 3 from bottom to top. The elastic clamping component 6 keeps the clamping block 63 under constant pressure on the felt 3. The lateral guide wheel 71 of the anti-deviation guide wheel group 7 restricts the lateral swing of the enameled wire 1. The horizontal support wheel 72 supports the enameled wire 1 and restricts vertical shaking, thereby achieving stable and uniform painting of the enameled wire 1.

[0040] In this invention, through the synergistic action of the elastic clamping component 6 and the anti-deviation guide wheel group 7, during the high-speed threading of the enameled wire 1, the covering of the felt 3 and the lateral guide wheel 71 work together to prevent the enameled wire 1 from swaying laterally within the felt 3, while also preventing the vertical vibration of the enameled wire 1 from lifting the felt 3. This significantly reduces the multi-directional vibration (lateral swaying and vertical vibration) of the enameled wire 1 during the coating process, making the wire run more smoothly and thus improving the uniformity of the coating film. The elastic clamping component 6 can adjust the preload, and the anti-deviation guide wheel spacing is adjustable and has an elastic floating function, which can adapt to enameled flat wires of different widths and materials, avoiding uneven coating or jamming caused by wire size fluctuations or running vibrations. The heating jacket 111 and temperature sensor are also included. 112 is linked with the control system to keep the paint temperature constant and avoid viscosity changes caused by temperature fluctuations, thereby ensuring the consistency of paint application during long-term continuous production; the anti-vortex cover 51 is installed on the paint return pipe 5 to effectively suppress vortices and bubbles during the paint return process and prevent paint film defects caused by bubbles being absorbed by the felt 3; the guide plate 44 guides the paint flow in a directional manner, and the distributor 95 distributes the paint evenly through multiple ports. Combined with the paint return system, the paint in the cylinder 4 flows fully and is renewed in a timely manner, preventing local paint aging or uneven concentration; the gap adjustment mechanism 8 can adapt to different thicknesses of felt 3, the lead screw 43 can adjust the guide wheel spacing to adapt to different line widths, and the elastic clamping component 6 can adjust the pre-tightening force, making the overall device have good versatility and adjustability.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-speed enameled copper flat wire coating device, comprising a cylinder (4), a pressure plate (2), and a felt (3) sandwiched between the pressure plate (2) and the cylinder (4), wherein the pressure plate (2) and the cylinder (4) are provided with U-shaped long grooves (41) for the enameled wire (1) to pass through, characterized in that, Also includes: An adaptive clamping mechanism is provided between the pressure plate (2) and the cylinder (4) to apply an adjustable wrapping pressure to the enameled wire (1) passing through the felt (3) and to limit its multi-directional vibration; The adaptive clamping mechanism includes an elastic clamping assembly (6) disposed on the pressure plate (2) and anti-deviation guide wheel assembly (7) disposed on both sides of the U-shaped long groove (41) of the cylinder (4). The elastic clamping assembly (6) includes a clamping shaft (61), a tension spring (62), and a clamping block (63). The clamping shaft (61) passes through the pressure plate (2) and is connected to the clamping block (63). The tension spring (62) is sleeved on the outside of the clamping shaft (61) and abuts between the pressure plate (2) and the clamping shaft (61) to adjust the pressure of the clamping block (63) on the felt (3). The anti-deviation guide wheel assembly (7) includes lateral guide wheels (71) symmetrically arranged on opposite sides of the U-shaped long groove (41) and a horizontal support wheel (72) arranged at the bottom of the U-shaped long groove (41). The axis of the lateral guide wheel (71) is perpendicular to the travel direction of the enameled wire (1), and the axis of the horizontal support wheel (72) is parallel to the travel direction of the enameled wire (1). The elastic floating mechanism (73) includes a sleeve (731), a support (732) and a spring (733). The support (732) is slidably sleeved on the outside of the sleeve (731). The spring (733) is sleeved on the outside of the sleeve (731) and its two ends are fixed to the sleeve (731) and the support (732) respectively. The lateral guide wheel (71) is rotatably mounted on the support (732).

2. The high-speed enameled copper flat wire coating device according to claim 1, characterized in that, The outer wall of the cylinder (4) is fixedly installed with a frame (42), and the pressure plate (2) is slidably assembled in the frame (42); the inside of the frame (42) is rotatably equipped with a lead screw (43), and the sleeves (731) corresponding to the two lateral guide wheels (71) in the U-shaped long groove (41) are threadedly connected to the lead screw (43) to adjust the distance between the two lateral guide wheels (71).

3. The high-speed enameled copper flat wire coating device according to claim 2, characterized in that, The clamping shaft (61) includes a sliding shaft (611) and a clamping bolt (612). The sliding shaft (611) is fixed on the clamping block (63) and extends to the outside of the pressure plate (2). The clamping bolt (612) is threaded to the end of the clamping shaft (61). The tension spring (62) is disposed between the pressure plate (2) and the clamping bolt (612). The tension length of the tension spring (62) is adjusted by rotating the clamping bolt (612).

4. The high-speed enameled copper flat wire coating device according to claim 3, characterized in that, It also includes a constant temperature paint supply system, which includes a paint supply pipeline (9), a paint return pipeline (10), and a temperature control device (11). The paint supply pipeline (9) includes a paint supply tank (91), a paint pump (92), a fine filter (93), and a paint supply main pipe (94) connected in sequence. The paint supply main pipe (94) is connected to the inside of the cylinder (4) through a distributor (95). The paint return pipeline (10) is located at the bottom of the cylinder (4). A paint return pipe (5) connected to the paint return pipeline (10) is inserted into the cylinder (4). The upper opening of the paint return pipe (5) is higher than the paint liquid level in the cylinder (4). The temperature control device (11) includes a heating jacket (111) installed on the outer wall of the cylinder (4) and a temperature sensor (112) installed in the paint supply tank (91).

5. The high-speed enameled copper flat wire coating device according to claim 4, characterized in that, The upper opening of the return pipe (5) is provided with an anti-vortex cover (51). The anti-vortex cover (51) has an inverted bowl-shaped structure and multiple return holes (52) are opened on its side wall.

6. The high-speed enameled copper flat wire coating device according to claim 5, characterized in that, The cylinder (4) is provided with a guide plate (44) inside. The guide plate (44) is inclined at the bottom of the cylinder (4). The high end of the guide plate (44) is located at the paint supply inlet, and the low end is located at the paint return pipe (5).

7. The high-speed enameled copper flat wire coating device according to claim 6, characterized in that, A gap adjustment mechanism (8) is provided between the pressure plate (2) and the cylinder (4). The gap adjustment mechanism (8) includes a connecting block (81), an adjusting screw (82) and a threaded sleeve (83). The connecting block (81) is fixed to the end of the pressure plate (2), the threaded sleeve (83) is fixed to the side wall of the frame (42), the adjusting screw (82) is rotatably assembled in the connecting block (81), and the bottom end of the adjusting screw (82) is threadedly connected in the threaded sleeve (83).

8. A method for coating high-speed enameled copper flat wire, applicable to the high-speed enameled copper flat wire coating apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: Adjustment steps: Adjust the distance between the two side guide wheels (71) according to the width of the enameled wire (1), and adjust the gap between the pressure plate (2) and the cylinder (4) according to the thickness of the felt (3). At the same time, adjust the preload of the tension spring (62) by rotating the clamping bolt (612). Paint supply steps: Start the constant temperature paint supply system so that the paint liquid is evenly fed into the cylinder (4) through the paint supply pipeline (9) at the set temperature, and forms a circulation flow through the return paint pipeline (10); Painting steps: Pass the enameled wire (1) through the U-shaped long groove (41) and the felt (3) from bottom to top. The elastic clamping component (6) keeps the clamping block (63) under constant pressure on the felt (3). The lateral guide wheel (71) of the anti-deviation guide wheel group (7) restricts the lateral swing of the enameled wire (1). The horizontal support wheel (72) supports the enameled wire (1) and restricts vertical shaking, thereby achieving stable and uniform painting of the enameled wire (1).

9. The high-speed enameled copper flat wire coating method according to claim 8, characterized in that, In the paint supply step, the paint temperature is kept constant by linking the heating jacket (111) and the temperature sensor (112), and the eddies and bubbles generated during the paint return process are suppressed by the anti-eddy current cover (51).

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