A method of processing an electromagnetic coil
By employing segmented gradient pressurization and secondary impregnation and pressure holding processes, combined with defoaming and collection components, the problem of paint foam in electromagnetic coil processing was solved, achieving full penetration and gapless filling of the paint, and improving the yield of electromagnetic coils.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI HEBO ELECTROMECHANICAL CO LTD
- Filing Date
- 2026-05-12
- Publication Date
- 2026-06-26
Smart Images
Figure CN122291278A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of coil processing technology, specifically a method for processing electromagnetic coils. Background Technology
[0002] An electromagnetic coil is a component made of insulated wire. When current flows through the wire, a uniform magnetic field is generated at the center of the coil. If the coil is wound on a magnetic material such as an iron core, the magnetic field will be greatly enhanced. An electromagnetic coil includes a frame, windings, and an insulating layer. As a core component that converts electrical energy into magnetic energy, electromagnetic coils are widely used in new energy vehicles, 5G base stations, medical equipment, and other fields. In the existing technology, electromagnetic coils are usually processed by winding machines or by hand. The typical steps include coil wire preparation, coil winding, insulation treatment and curing, and post-processing and testing.
[0003] When using electromagnetic coils, the insulation process typically involves placing the coil in an impregnation tank, evacuating it, and then injecting varnish for insulation. However, when the vacuum level drops sharply, the air released from the varnish quickly accumulates, forming a large amount of foam. If there is too much foam, the varnish will expand in volume. Furthermore, after the foam breaks, tiny air bubbles may remain in the varnish, affecting the subsequent impregnation quality and reducing the yield rate of electromagnetic coils, thus failing to meet people's needs. Summary of the Invention
[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a method for processing an electromagnetic coil.
[0005] A method for processing an electromagnetic coil includes the following steps: S1. The pre-treated electromagnetic wire is wound using a winding machine, and the coil is then tightened. S2. Place the coil into the inner tank of the impregnation tank, seal it, and then evacuate the vacuum until all the air inside the impregnation tank is completely removed. S3. Inject paint into the inner can so that the paint completely covers the coil. Then, enter the segmented pressurization stage, control the inner can to rotate forward and backward, and remove paint foam in the inner can through the defoaming component. S4. Release the internal pressure of the impregnation tank, take out the coil and drip it dry, remove excess paint from the surface of the coil, put the coil back into the inner tank, and re-evacuate the vacuum. The extracted paint foam is formed into liquid paint droplets through the protective component, so that the collection component collects the liquid paint droplets. S5. Inject paint into the inner tank and maintain pressure using a hydraulic pressurization device to ensure that the paint completely fills all gaps. Then remove the coil and drip off any excess paint from the surface. S6. Place the insulated coil into a curing device for thorough curing, and then test the coil's performance using testing equipment.
[0006] As a further aspect of the present invention: In step S1, an electromagnetic wire, insulating material, and a bobbin are selected, and the electromagnetic wire is drawn, washed, and annealed to remove stress and prevent oxidation; the insulating material and bobbin are cleaned to remove surface impurities, and the pre-treated electromagnetic wire is wound using a winding machine, adjusting the winding tension and speed to ensure uniform tension and avoid wire stretching deformation or paint film damage; after winding, the coil is tightened, leaving sufficient lead wire to ensure accurate number of turns and neat arrangement; a constant temperature drawing and inert gas protected annealing process is adopted, controlling the drawing temperature at 70-90℃, and nitrogen is used to replace part of the water vapor during annealing to improve the wire's oxidation resistance, reduce wire stress, and reduce the paint film damage rate during winding; the insulating material is pre-dried to remove moisture and avoid subsequent problems such as bubbles and cracks in the insulation layer.
[0007] As a further aspect of the present invention: In step S2, before placing the coil into the impregnation tank, the surface of the coil needs to be cleaned. The treated coil is then placed into the inner tank of the impregnation tank, the tank lid is closed and sealed, and a vacuum pump is started to evacuate the tank, reducing the internal air pressure to below 10 Pa. The vacuuming continues for 30-40 minutes to thoroughly remove air and moisture from the inside of the coil and the gaps between the coil turns, clearing obstacles for the varnish penetration and preventing porosity defects in the insulation layer. The tank lid and the impregnation tank are detachably connected, and the vacuum pump is connected to the impregnation tank via a suction pipe.
[0008] As a further aspect of the present invention: In step S3, modified epoxy resin paint is injected into the inner tank through the paint injection pipe, ensuring that the paint completely covers the top of the coil by more than 50mm. The control valve on the paint injection pipe is then closed, and the segmented pressurization stage is entered. A gradient pressurization mode is adopted, the hydraulic pressurization device is started, and inert gas is injected. The pressure is first increased to 0.5-1MPa and maintained for 15-20 minutes to allow the paint to initially penetrate into the gaps on the surface of the coil. Then, the pressure is gradually increased to 1.5-2MPa and maintained for 25-30 minutes to allow the paint to immerse the inside of the coil and the tiny gaps, achieving initial and comprehensive penetration. The hydraulic pressurization device is equipped with a gas injection pipe that is connected to the impregnation tank.
[0009] As a further aspect of the present invention: the impregnation tank is mounted on a base, a first drive motor is mounted on the lower end of the base, the output shaft of the first drive motor extends into the impregnation tank and is fixed at the center of the lower end face of the inner tank, a rotary seal is mounted on the bottom end face of the inner tank and is rotatably connected to the impregnation tank, a sealing ring is detachably provided on the inner wall of the impregnation tank and fits against the top end face of the inner tank, the paint injection pipe is obliquely and symmetrically arranged above the inner tank, one end of the paint injection pipe is externally connected to a paint injection pump, and the paint injection pump is connected to a paint storage tank for storing modified epoxy resin paint.
[0010] As a further aspect of the present invention: In step S4, the pressure valve on the hydraulic pressurizing device is closed, and the internal pressure of the impregnation tank is released through the hydraulic pressurizing device. The coil is taken out and allowed to drip dry naturally for 30 minutes to remove excess paint from the surface of the coil. The coil is then placed back into the middle of the inner tank, and a vacuum is drawn again for 20 minutes to remove the air and moisture from the un-penetrated areas that were left after the first impregnation, thus making up for the deficiencies of the first impregnation and eliminating insulation dead zones.
[0011] As a further aspect of the present invention: the inner tank contains residual paint from the initial impregnation, and the impregnation tank is equipped with a defoaming component. The defoaming component is used to remove foam generated by the paint in the inner tank under vacuum. The defoaming component includes a first rotating ring rotatably disposed inside the impregnation tank, a first connecting ring that fits against the outer wall of the first rotating ring, and several fixing blocks that fix the first rotating ring and the first connecting ring together. The impregnation tank has a first rotating groove that matches the first rotating ring. The defoaming component also includes a reinforcing rod detachably mounted on the bottom of the fixing block and a defoaming component fixedly mounted on the bottom of the reinforcing rod. The defoaming component includes a connecting block connected to the reinforcing rod and several spikes vertically disposed on the bottom of the connecting block. Both the reinforcing rod and the defoaming component are provided with an anti-stick coating.
[0012] As a further aspect of the present invention: the defoaming assembly further includes a second connecting ring disposed on the outer wall of the inner tank and a first rotating toothed ring disposed on the outer wall of the second connecting ring. The interior of the impregnation tank is provided with a second rotating groove that matches the second connecting ring and the first rotating toothed ring. The defoaming assembly further includes a plurality of first rotating gears arranged in a circular array on the outer side of the second connecting ring and meshing with the first rotating toothed ring. A first transmission rod is vertically mounted on the upper end of the first rotating gear. The first rotating gear is rotatably disposed inside the impregnation tank. The first rotating toothed ring is configured as a toothed ring.
[0013] As a further aspect of the present invention: the defoaming assembly further includes a second rotating toothed ring disposed on the outer wall of the first rotating ring and a plurality of second rotating gears arranged in a circular array on the outer side of the second rotating toothed ring. The second rotating gears mesh with the second rotating toothed ring and are coaxially connected to the first transmission rod, so that the first rotating toothed ring controls the second rotating gears through the first rotating gears and the first transmission rod, so that the second rotating gears drive the second rotating toothed rings to rotate.
[0014] As a further aspect of the present invention: the upper end of the can lid is provided with a buffer box that is connected to the gas filling pipe and the gas extraction pipe respectively, the bottom end of the buffer box is provided with a sealed gas guide pipe that penetrates the can lid, one end of the gas guide pipe extends into the impregnation tank, and the inner top surface of the can lid is provided with a protective component. The protective component is used to protect the gas guide pipe connected to the vacuum pump to prevent paint foam from entering the gas guide pipe and affecting the vacuum pump.
[0015] As a further aspect of the present invention: the protective component includes a filter cover that is detachably installed on the inner top surface of the can lid and a plurality of filter screens arranged in a circular array on the filter cover. Both the filter cover and the filter screens are treated with anti-sticking. The outer wall of the air guide tube has an opening aligned with the filter screens, and the filter cover has a first through hole that fits into the air guide tube.
[0016] As a further aspect of the present invention: the protective assembly further includes a second drive motor detachably mounted on the bottom inner side of the filter cover, a rotating block rotatably mounted on the bottom end face of the filter cover, and a plurality of reinforcing blocks arranged in a circular array on the outer wall of the rotating block. The output shaft of the second drive motor is perpendicularly connected to the center of the rotating block. A first scraper is vertically mounted on the upper end of the reinforcing block and fits against the outer side of the filter cover. The first scraper can clean the liquid paint droplets adhering to the filter screen. Both the first drive motor and the second drive motor include a servo motor and a reducer.
[0017] As a further aspect of the present invention: the protective assembly further includes several cleaning structures movably disposed inside the filter cover to assist in cleaning the filter screen, and several first rotating rods rotatably disposed on the filter cover to control the rotation of the cleaning structures. Several cleaning structures are fixedly sleeved on the first rotating rods, and the first rotating rods are aligned with the filter screen. The filter cover contains a main gear ring fixed to the output shaft of the second drive motor, a first transmission gear meshing with the main gear ring, and a first auxiliary gear coaxially connected to the first rotating rods. The first auxiliary gear meshes with the first transmission gear. When the second drive motor operates, the main gear ring and the first transmission gear cause the first auxiliary gear to control the cleaning structures to clean the filter cover via the first rotating rods. The protective assembly also includes several cleaning rods arranged in a circular array outside the filter cover to treat paint foam.
[0018] As a further embodiment of the present invention: the cleaning structure includes a cleaning ring connected to the first rotating rod, a connecting tube arranged in a circular array on the cleaning ring, and a cleaning block movably disposed in the connecting tube and used to assist in striking the filter screen. The head of the cleaning block is configured as a flexible structure, and the tail of the cleaning block has a connecting hole. A buffer spring is installed in the connecting tube, extending into the connecting hole and connected to the cleaning block.
[0019] As a further aspect of the present invention: the can lid is also equipped with a collection component for use with the protective component. The collection component is capable of collecting liquid paint droplets removed by the filter cover and the first scraper. The collection component includes a first collection box detachably installed on the inner top surface of the can lid and a second collection box detachably installed at the bottom of the first collection box. The upper end of the first collection box is provided with a second through hole that matches the filter cover. Several cleaning rods are vertically installed on the inner top surface of the first collection box. The first collection box is provided with a through groove aligned with the filter screen. The lower inner part of the first collection box is provided with a feeding trough in the shape of a circular funnel. The lower end of the feeding trough is provided with a feeding port that communicates with the second collection box. The second collection box is provided with a feeding port aligned with the feeding port. The upper end of the second collection box is provided with a threaded ring that connects to the first collection box.
[0020] As a further aspect of the present invention: the collection assembly further includes a second rotating rod vertically connected to the bottom end of the rotating block, a rotating frame installed at the bottom end of the second rotating rod, and a plurality of second scrapers detachably installed on the rotating frame and attached to the inner wall of the discharge trough. The second scrapers are inclined, and the lower part of the second scraper extends into the discharge port, while the upper part of the second scraper extends to the outside of the cleaning rod, so that the second rotating rod controls the second scrapers to clean the liquid paint droplets on the discharge trough through the rotating frame.
[0021] As a further embodiment of the present invention: the collecting assembly further includes a connector integrally connected to the upper part of the second scraper, a limiting ring connected to a plurality of connectors, and a drive gear ring disposed on the limiting ring. The limiting ring and the drive gear ring are both arranged perpendicularly to the connector. The limiting ring is fitted and sealed with the first collecting box. The interior of the first collecting box is provided with a limiting groove that matches the limiting ring and the drive gear ring. The collecting assembly further includes a second transmission gear arranged in a circular array in the limiting groove and meshing with the drive gear ring.
[0022] As a further aspect of the present invention: the collection assembly further includes a striking cavity formed inside the first collection box and used in conjunction with the second scraper, and a plurality of third rotating rods arranged in a circular array and rotatably disposed in the striking cavity. The third rotating rods are inclinedly disposed inside the first collection box and are arranged parallel to the second scraper. The vertical cross-section of the striking cavity is rectangular, and the length direction of the vertical cross-section is parallel to the third rotating rod. The third rotating rods are uniformly provided with a plurality of striking structures that strike the striking cavity. When the striking structures are working, they can generate vibrations to assist the second scraper in cleaning the liquid paint droplets on the discharge trough.
[0023] As a further aspect of the present invention: the collecting assembly further includes a second auxiliary gear rotatably disposed in the limiting groove and coaxially connected to the third rotating rod. The third rotating rod is provided with a second transmission rod connected to the second auxiliary gear. The second auxiliary gear meshes with the second transmission gear, so that when the driving gear ring rotates, the second transmission gear controls the third rotating rod to work through the second auxiliary gear, and the striking structure strikes the striking cavity.
[0024] As a further aspect of the present invention: the striking structure includes a striking ring coaxially connected to the third rotating rod and striking blocks vertically disposed on the outer wall of the striking ring. The striking blocks are made of a flexible wear-resistant material, and a plurality of the striking blocks are arranged in a circular array on the striking ring.
[0025] As a further aspect of the present invention: a rotating rod extending into the second collection box is vertically installed at the bottom end of the rotating frame, and a negative pressure fan is provided at the bottom end of the rotating rod. When the rotating block controls the negative pressure fan to rotate through the rotating rod, a negative pressure airflow is generated in the second collection box, which accelerates the entry of liquid paint droplets at the discharge port into the second collection box. An exhaust hole is provided on the upper part of the outer wall of the second collection box.
[0026] As a further aspect of the present invention: In step S5, paint of the same specification is injected into the inner tank through the paint injection pipe so that the paint covers the coil. Then, the control valve on the paint injection pipe is closed, and the pressure is maintained at 1.5-2MPa for 20-25 minutes. This allows the paint to supplement the weak areas that were not fully impregnated during the first impregnation, ensuring that the paint completely fills all gaps and forms a dense insulating layer. After completion, the hydraulic pressurization device is activated to release the internal pressure of the impregnation tank, and the tank cover is opened to remove the coil and drip off any excess paint on the surface.
[0027] As a further aspect of the present invention: In step S6, the coil after insulation treatment is placed in a curing device and cured by gradient heating. After curing, it is cooled, and the coil is subjected to appearance inspection, insulation resistance test, withstand voltage test and electrical performance test.
[0028] Compared with the prior art, the beneficial effects of the present invention are: (1) The processing method adopted in this invention adopts segmented gradient pressurization, combined with a secondary impregnation and pressure holding process, to solve the problem of uneven paint penetration caused by one-time high pressure, and at the same time to make up for the weak points of the first impregnation, so as to achieve full and deep penetration of the paint. The segmented pressurization mode, combined with the forward and reverse rotation control of the inner tank, causes the modified epoxy resin paint to overcome capillary resistance and completely fill the smallest gaps inside the coil, so as to achieve gapless filling between the paint and the insulation layer. The paint foam is converted into liquid paint droplets by the defoaming component, the protection component and the collection component, and the extracted paint foam is recycled, which effectively prevents insulation defects caused by foam adhesion, and significantly reduces the loss of valuable epoxy resin paint, ensuring the yield of electromagnetic coil processing and improving the use effect of the processing method.
[0029] (2) The present invention, through the setting of defoaming components and protective components, the first rotating ring, the first connecting ring, the fixing block, the reinforcing rod, the defoaming component, the second connecting ring, the first rotating gear ring, the first rotating gear, the first transmission rod, the second rotating gear ring and the second rotating gear, can remove large-sized paint foam in the inner tank, avoid the accumulation of paint foam, and make the paint uniformly mixed in the inner tank. The setting of the suction pipe, buffer box, air guide pipe, filter cover, filter screen and cleaning rod can remove small-sized paint foam. Through the setting of the second drive motor, rotating block, reinforcing block, first scraper, cleaning structure, first rotating rod, main gear ring, first transmission gear and first auxiliary gear, the filter screen can be cleaned, the service life of the filter screen is extended, the removal effect of paint foam is improved, and the use effect of the processing method is improved.
[0030] (3) The present invention, through the collection components, the first collection box and the second collection box cooperate to collect the liquid paint droplets converted by the filter screen, the first scraper and the cleaning rod. Through the second rotating rod, the rotating frame and the second scraper, the liquid paint droplets in the feeding trough can be cleaned into the second collection box. Through the connecting parts, the limiting ring, the driving gear ring, the second transmission gear, the knocking chamber, the second transmission rod, the third rotating rod, the knocking structure and the second auxiliary gear, the feeding trough vibrates to assist the cleaning effect of the second scraper. Through the rotating rod and the negative pressure fan, the liquid paint droplets at the feeding port can be adsorbed into the second collection box, avoiding the accumulation of liquid paint droplets at the feeding port, improving the collection effect of the collection components and improving the use effect of the processing method. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the production process of the present invention.
[0032] Figure 2 This is an overall structural diagram of the present invention.
[0033] Figure 3 This is a partial cross-sectional view of the impregnation tank in this invention.
[0034] Figure 4 This is a partial structural diagram of the defoaming component in this invention.
[0035] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A in the middle.
[0036] Figure 6 This is a partial structural diagram of the protective component in this invention.
[0037] Figure 7 This is a partial structural diagram of the first scraper and cleaning structure in this invention.
[0038] Figure 8 In this invention Figure 7 Enlarged view of the structure at point B.
[0039] Figure 9 This is a partial structural diagram of the collecting components in this invention.
[0040] Figure 10 In this invention Figure 9 Enlarged view of the structure at point C.
[0041] In the diagram: 1. Impregnation tank; 2. Inner tank; 3. Tank lid; 4. Vacuum pump; 5. Paint injection pipe; 6. Hydraulic pressurizing device; 7. Base; 8. First drive motor; 9. Rotary seal; 10. Sealing ring; 11. Pressure valve; 12. First rotating ring; 13. First connecting ring; 14. Fixing block; 15. Reinforcing rod; 16. Defoamer; 17. Second connecting ring; 18. First rotating gear ring; 19. First rotating gear; 20. First transmission rod; 21. Second rotating gear ring; 22. Second rotating gear; 23. Suction pipe; 24. Buffer box; 25. Air guide pipe; 26. Filter cover; 27. Filter screen; 28. Second drive motor; 29. Rotating block; 30. Reinforcing block; 31. ... 32. Scraper; 33. Cleaning structure; 34. First rotating rod; 35. Main gear ring; 36. First transmission gear; 37. First auxiliary gear; 38. Cleaning ring; 39. Connecting pipe; 40. Cleaning block; 41. Buffer spring; 42. Cleaning rod; 43. First collection box; 44. Second collection box; 45. Threaded ring; 46. Second rotating rod; 47. Rotating frame; 48. Second scraper; 49. Connector; 50. Limiting ring; 51. Drive gear ring; 52. Second transmission gear; 53. Knocking chamber; 54. Second transmission rod; 55. Third rotating rod; 56. Knocking structure; 57. Second auxiliary gear; 58. Knocking ring; 59. Knocking block; 60. Rotating rod; 71. Negative pressure fan. Detailed Implementation
[0042] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0043] Example 1 Please see Figures 1-10 This application provides a method for processing an electromagnetic coil, comprising the following steps: S1. The pre-treated electromagnetic wire is wound using a winding machine, and the coil is then tightened. S2. Place the coil into the inner tank 2 inside the impregnation tank 1, seal it, and then evacuate until all the air inside the impregnation tank 1 is completely removed. S3. Inject paint into inner tank 2 so that the paint completely covers the coil. Then, enter the segmented pressurization stage, control inner tank 2 to rotate forward and reverse, and remove paint foam in inner tank 2 through defoaming component. S4. Release the internal pressure of the impregnation tank 1, take out the coil and drip it dry, remove the excess paint liquid on the surface of the coil, put the coil back into the inner tank 2, and re-evacuate the vacuum. The paint liquid foam extracted by the protective component is formed into liquid paint droplets, so that the collection component collects the liquid paint droplets. S5. Inject paint into inner tank 2 and maintain pressure through hydraulic pressurization device 6 to ensure that the paint completely fills all gaps. Then remove the coil and drip off the excess paint on the surface. S6. Place the insulated coil into a curing device for thorough curing, and then test the coil's performance using testing equipment.
[0044] In step S1, the present invention selects electromagnetic wire, insulating material, and skeleton, and performs wire drawing, washing, and annealing treatments on the electromagnetic wire to remove stress and prevent oxidation. The insulating material and skeleton are cleaned to remove surface impurities, ensuring good fit and insulation effect in subsequent processing. The pre-treated electromagnetic wire is wound using a winding machine, adjusting the winding tension and speed to ensure uniform tension and prevent wire stretching deformation or varnish damage. Single-layer, multi-layer, spiral, or ring winding methods are selected according to requirements. Multi-layer coils require interlayer insulation pads. After winding, the coil is tightened, leaving sufficient lead wire to ensure accurate number of turns and neat arrangement. A constant-temperature wire drawing and inert gas protected annealing process can be used, controlling the wire drawing temperature at 70-90℃. Nitrogen is used to replace some water vapor during annealing to improve the wire's oxidation resistance, reduce wire stress, and lower the varnish damage rate during winding. The insulating material is pre-dried to remove moisture and prevent bubbles and cracks in the insulation layer later.
[0045] In step S2, before placing the coil into the impregnation tank 1, the surface of the coil needs to be cleaned. The treated coil is then placed into the inner tank 2 inside the impregnation tank 1, the tank lid 3 is closed and sealed, and the vacuum pump 4 is started to evacuate the tank, reducing the internal air pressure of the impregnation tank 1 to below 10 Pa. The evacuation continues for 30-40 minutes to thoroughly remove air and moisture from the inside of the coil and the gaps between the coil coils, clearing obstacles for the varnish to penetrate and preventing porosity defects in the insulation layer. In this invention, the tank lid 3 and the impregnation tank 1 are detachably connected, and the vacuum pump 4 is connected to the impregnation tank 1 through the suction pipe 23.
[0046] In step S3, modified epoxy resin paint is injected into the inner tank 2 through the paint injection pipe 5, ensuring that the paint completely covers the top of the coil by more than 50mm. The control valve on the paint injection pipe 5 is then closed, and the segmented pressurization stage is entered. A gradient pressurization mode is adopted, and the hydraulic pressurization device 6 is started to inject inert gas. The pressure is first increased to 0.5-1MPa and maintained for 15-20 minutes to allow the paint to initially penetrate into the gaps on the surface of the coil. Then, the pressure is gradually increased to 1.5-2MPa and maintained for 25-30 minutes to allow the paint to immerse the inside of the coil and the tiny gaps, achieving initial and comprehensive penetration. In this invention, the hydraulic pressurization device 6 is equipped with a gas injection pipe that is connected to the impregnation tank 1.
[0047] In step S4, the pressure valve 11 on the hydraulic pressurizing device 6 is closed, and the internal pressure of the impregnation tank 1 is released through the hydraulic pressurizing device 6. The coil is taken out and allowed to drip dry naturally for 30 minutes to remove excess paint from the surface of the coil. The coil is then placed back into the middle of the inner tank 2, and a vacuum is drawn again for 20 minutes to remove the air and moisture from the un-penetrated areas that were left after the first impregnation, thus making up for the deficiencies of the first impregnation and eliminating insulation dead spots.
[0048] In step S5, the same specification of paint is injected into the inner tank 2 through the paint injection pipe 5 so that the paint covers the coil. Then, the control valve on the paint injection pipe 5 is closed, and the pressure is maintained at 1.5-2MPa for 20-25 minutes. This allows the paint to supplement the weak areas that were not penetrated in the first impregnation, ensuring that the paint completely fills all gaps and forms a dense insulation layer. After completion, the hydraulic pressurization device 6 is activated to release the internal pressure of the impregnation tank 1, and the tank cover 3 is opened to remove the coil and drip off the excess paint on the surface.
[0049] In step S6, the coil after insulation treatment is placed in a curing device and cured by gradient heating. After curing, it is cooled and the coil is subjected to appearance inspection, insulation resistance test, withstand voltage test and electrical performance test.
[0050] Example 2 Based on Example 1, referring to Figures 2-5This is the second embodiment of the present invention. In this invention, the impregnation tank 1 is mounted on the base 7. The lower end of the base 7 is equipped with a first drive motor 8. The output shaft of the first drive motor 8 extends into the impregnation tank 1 and is fixed at the center of the lower end face of the inner tank 2. The bottom end face of the inner tank 2 is equipped with a rotary seal 9 that is rotatably connected to the impregnation tank 1. The inner wall of the impregnation tank 1 is detachably provided with a sealing ring 10 that fits against the top end face of the inner tank 2. The paint injection pipe 5 is obliquely and symmetrically arranged above the inner tank 2. One end of the paint injection pipe 5 is externally connected to a paint injection pump, and the paint injection pump is connected to a paint storage tank for storing modified epoxy resin paint.
[0051] In this embodiment, the paint injection pump is started to inject the modified epoxy resin paint in the storage tank into the inner tank 2 through the paint injection pipe 5. After the modified epoxy resin paint is injected, the first drive motor 8 is started to drive the inner tank 2 to rotate in the impregnation tank 1. This causes the modified epoxy resin paint in the inner tank 2 to be subjected to centrifugal force, completely immersing the coil and achieving a dense filling without dead corners. Every once in a while, the first drive motor 8 is controlled to reverse to prevent the modified epoxy resin paint from accumulating at the edge of the inner tank 2 due to centrifugal force. This allows the paint liquid to form a periodic vortex and counterflow in the inner tank 2, ensuring that the coils in all corners of the inner tank 2 can contact a uniform paint liquid concentration and thickness. It also plays a role in slow stirring, preventing the modified epoxy resin from settling or locally curing during standing.
[0052] In this invention, the inner tank 2 contains residual paint from the initial impregnation. The impregnation tank 1 is equipped with a defoaming component, which is used to remove foam generated by the paint in the inner tank 2 in a vacuum environment. The defoaming component includes a first rotating ring 12 rotatably disposed inside the impregnation tank 1, a first connecting ring 13 that fits against the outer wall of the first rotating ring 12, and several fixing blocks 14 that fix the first rotating ring 12 and the first connecting ring 13. The impregnation tank 1 has a first rotating groove that matches the first rotating ring 12. The defoaming component also includes a reinforcing rod 15 detachably mounted on the bottom of the fixing block 14 and a defoaming component 16 fixedly mounted on the bottom of the reinforcing rod 15. The defoaming component 16 includes a connecting block connected to the reinforcing rod 15 and several spikes vertically disposed on the bottom of the connecting block. Both the reinforcing rod 15 and the defoaming component 16 are provided with an anti-stick coating.
[0053] In this embodiment, when the first drive motor 8 drives the inner tank 2 to rotate in the impregnation tank 1, the modified epoxy resin paint generates paint foam in a vacuum environment, and the paint foam accumulates towards the edge of the inner tank 2 under the action of centrifugal force. The rotation of the inner tank 2 controls the first rotating ring 12 to rotate, so that the first rotating ring 12 drives the first connecting ring 13 to rotate. The first connecting ring 13 drives several fixing blocks 14 to rotate. The fixing blocks 14 drive the defoaming component 16 to rotate in the inner tank 2 through the reinforcing rod 15, so that the defoaming component 16 punctures the paint foam, and the punctured liquid paint droplets enter the modified epoxy resin paint. The air in the paint foam is discharged by the vacuum pump 4.
[0054] The defoaming component of the present invention further includes a second connecting ring 17 disposed on the outer wall of the inner tank 2 and a first rotating toothed ring 18 disposed on the outer wall of the second connecting ring 17. The interior of the impregnation tank 1 is provided with a second rotating groove that matches the second connecting ring 17 and the first rotating toothed ring 18. The defoaming component also includes a plurality of first rotating gears 19 arranged in a circular array on the outer side of the second connecting ring 17 and meshing with the first rotating toothed ring 18. A first transmission rod 20 is vertically mounted on the upper end of the first rotating gear 19. The first rotating gear 19 is rotatably disposed inside the impregnation tank 1. The first rotating toothed ring 18 is configured as a toothed ring.
[0055] In this embodiment, when the inner tank 2 rotates, it causes the second connecting ring 17 to rotate, the second connecting ring 17 to rotate the first rotating gear ring 18, the first rotating gear ring 18 to rotate the first rotating gear 19, and the first rotating gear 19 to rotate the first transmission rod 20.
[0056] The defoaming component of this invention further includes a second rotating toothed ring 21 disposed on the outer wall of the first rotating ring 12 and a plurality of second rotating gears 22 arranged in a circular array on the outer side of the second rotating toothed ring 21. The second rotating gears 22 mesh with the second rotating toothed ring 21 and are coaxially connected to the first transmission rod 20, so that the first rotating toothed ring 18 controls the second rotating gears 22 through the first rotating gears 19 and the first transmission rod 20, so that the second rotating gears 22 drive the second rotating toothed ring 21 to rotate.
[0057] In this embodiment, the first rotating gear 19 drives the first transmission rod 20 to rotate, which in turn drives the second rotating gear 22 to rotate. The second rotating gear 22 drives the second rotating gear ring 21 to rotate, which in turn drives the first rotating ring 12 to rotate. The first rotating ring 12 drives the defoaming component 16 to rotate through the first connecting ring 13, the fixing block 14, and the reinforcing rod 15, so that the defoaming component 16 removes paint foam.
[0058] Example 3 Based on Example 2, referring to Figures 2-3 and Figures 6-8 This is the third embodiment of the present invention. In this invention, the upper end of the can lid 3 is provided with a buffer box 24 that is connected to the gas filling pipe and the gas extraction pipe 23. The buffer box 24 is used to stabilize the pressure and buffer pressure fluctuations. The bottom end of the buffer box 24 is provided with a sealed gas guide pipe 25 that passes through the can lid 3. One end of the gas guide pipe 25 extends into the impregnation tank 1. The inner top surface of the can lid 3 is provided with a protective component. The protective component is used to protect the gas guide pipe 25 connected to the vacuum pump 4 and prevent paint foam from entering the gas guide pipe 25 and affecting the vacuum pump 4.
[0059] In this embodiment, the vacuum pump 4 is started, so that the suction pipe 23 evacuates air through the buffer box 24 and extracts air from the impregnation tank 1 through the gas guide pipe 25. The hydraulic pressurization device 6 is started, and inert gas is added to the buffer box 24 through the gas filling pipe, so that the inert gas enters the impregnation tank 1 through the gas guide pipe 25.
[0060] In this invention, the protective component includes a filter cover 26 that is detachably installed on the inner top surface of the can lid 3 and a plurality of filter screens 27 arranged in a circular array on the filter cover 26. Both the filter cover 26 and the filter screens 27 are treated with anti-sticking. The outer wall of the air guide pipe 25 has an opening that is aligned with the filter screens 27. The filter cover 26 has a first through hole that fits into the air guide pipe 25.
[0061] In this embodiment, when the vacuum pump 4 draws gas through the gas guide pipe 25, the filter cover 26 filters the gas through the filter screen 27, and the gas enters the gas guide pipe 25 from the opening and is then discharged.
[0062] The protective assembly of this invention also includes a second drive motor 28 detachably mounted on the bottom inner side of the filter cover 26, a rotating block 29 rotatably mounted on the bottom end of the filter cover 26, and a plurality of reinforcing blocks 30 arranged in a circular array on the outer wall of the rotating block 29. The output shaft of the second drive motor 28 is perpendicularly connected to the center of the rotating block 29. A first scraper 31 that fits against the outer side of the filter cover 26 is vertically mounted on the upper end of the reinforcing block 30. The first scraper 31 can clean the liquid paint droplets adhering to the filter screen 27. Both the first drive motor 8 and the second drive motor 28 include a servo motor and a reducer.
[0063] In this embodiment, the second drive motor 28 is started, which drives the rotating block 29 to rotate, so that the rotating block 29 drives the reinforcing block 30 to rotate, and the reinforcing block 30 drives the first scraper 31 to rotate, so that the first scraper 31 cleans the liquid paint droplets adhering to the filter screen 27.
[0064] The protective assembly of this invention also includes several cleaning structures 32 movably disposed inside the filter cover 26 to assist in cleaning the filter screen 27, and several first rotating rods 33 rotatably disposed on the filter cover 26 to control the rotation of the cleaning structures 32. The cleaning structures 32 are fixedly sleeved on the first rotating rods 33, and the first rotating rods 33 are aligned with the filter screen 27. The interior of the filter cover 26 is provided with a main gear ring 34 fixed to the output shaft of the second drive motor 28, a first transmission gear 35 meshing with the main gear ring 34, and a first rotating rod 33... The first auxiliary gear 36 is coaxially connected and meshes with the first transmission gear 35. When the second drive motor 28 is working, the first auxiliary gear 36 controls the cleaning structure 32 to clean the filter cover 26 through the first rotating rod 33 via the main gear ring 34 and the first transmission gear 35. The protective component also includes a number of cleaning rods 41 arranged in a circular array on the outside of the filter cover 26 to treat the paint foam. The cleaning rods 41 are set with a smooth surface and have an anti-stick coating, which can break the paint foam and drip it off.
[0065] In this embodiment, when the air duct 25 is evacuating, the paint foam gathers towards the filter cover 26, causing the cleaning rod 41 to break up the large-sized paint foam. The second drive motor 28 is then activated, causing the main gear ring 34 to rotate. The main gear ring 34 then drives several first transmission gears 35 to rotate, which in turn drives the first auxiliary gear 36 to rotate. The first auxiliary gear 36 then drives the first rotating rod 33 to rotate, which in turn drives the cleaning structure 32 to rotate. This causes the cleaning structure 32 to tap and clean the filter screen 27, removing the liquid paint droplets adhering to the filter screen 27.
[0066] In this invention, the cleaning structure 32 includes a cleaning ring 37 connected to the first rotating rod 33, a connecting tube 38 arranged in a circular array on the cleaning ring 37, and a cleaning block 39 movably disposed in the connecting tube 38 and used to assist in striking the filter screen 27. The head of the cleaning block 39 is configured as a flexible structure, and the tail of the cleaning block 39 is provided with a connecting hole. A buffer spring 40 is installed in the connecting tube 38, extending into the connecting hole and connected to the cleaning block 39.
[0067] In this embodiment, when the first rotating rod 33 rotates, it causes the cleaning ring 37 to rotate, which in turn causes several connecting pipes 38 to rotate. The connecting pipes 38 cause the cleaning block 39 to move and come into contact with the filter screen 27, allowing the cleaning block 39 to strike the filter screen 27 and remove the liquid paint droplets adhering to it. After the cleaning block 39 collides with the filter screen 27, it resets the buffer spring 40, allowing the cleaning block 39 to enter the connecting pipe 38.
[0068] Example 4 Based on Example 2, referring to Figure 6 and Figures 9-10 This is the fourth embodiment of the present invention. In this invention, the can lid 3 is also equipped with a collection component that works in conjunction with the protective component. The collection component can collect the liquid paint droplets removed by the filter cover 26 and the first scraper 31. The collection component includes a first collection box 42 that is detachably installed on the inner top surface of the can lid 3 and a second collection box 43 that is detachably installed on the bottom of the first collection box 42. The upper end of the first collection box 42 is provided with a second through hole that matches the filter cover 26. Several cleaning rods 41 are vertically installed on the inner top surface of the first collection box 42. The first collection box 42 is provided with a through groove that is aligned with the filter screen 27. The lower inner part of the first collection box 42 is provided with a feeding trough with a circular funnel structure. The lower end of the feeding trough is provided with a feeding port that communicates with the second collection box 43. The second collection box 43 is provided with a feeding port that is aligned with the feeding port. The upper end of the second collection box 43 is provided with a threaded ring 44 that connects to the first collection box 42.
[0069] In this embodiment, when the cleaning rod 41, the first scraper 31 and the cleaning structure 32 work together to break the paint foam into liquid paint droplets, the liquid paint droplets fall into the feeding trough of the first collection box 42 and slide from the feeding trough into the second collection box 43.
[0070] The collection assembly of the present invention also includes a second rotating rod 45 vertically connected to the bottom end of the rotating block 29, a rotating frame 46 installed at the bottom end of the second rotating rod 45, and a plurality of second scrapers 47 detachably installed on the rotating frame 46 and attached to the inner wall of the feeding trough. The rotating frame 46 is provided with mounting parts for fixing the second scrapers 47 in a circular array. The second scrapers 47 are inclined and the lower part of the second scrapers 47 extends into the feeding port, and the upper part of the second scrapers 47 extends to the outside of the cleaning rod 41, so that the second rotating rod 45 controls the second scrapers 47 to clean the liquid paint droplets on the feeding trough through the rotating frame 46.
[0071] In this embodiment, when the rotating block 29 rotates, it causes the second rotating rod 45 to rotate, the second rotating rod 45 causes the rotating frame 46 to rotate, and the rotating frame 46 causes several second scrapers 47 to rotate, so that the second scrapers 47 scrape off the liquid paint droplets on the inner wall of the feeding trough, and the liquid paint droplets enter the second collection box 43 through the feeding port.
[0072] The collection assembly of the present invention also includes a connector 48 integrally connected to the upper part of the second scraper 47, a limiting ring 49 connected to a plurality of connectors 48, and a drive gear ring 50 disposed on the limiting ring 49. The limiting ring 49 and the drive gear ring 50 are both perpendicular to the connector 48. The limiting ring 49 is fitted and sealed with the first collection box 42. The interior of the first collection box 42 is provided with a limiting groove that matches the limiting ring 49 and the drive gear ring 50. The collection assembly also includes a second transmission gear 51 arranged in a circular array in the limiting groove and meshing with the drive gear ring 50.
[0073] In this embodiment, the rotation of the second scraper 47 drives the connecting member 48 to rotate, which in turn drives the limiting ring 49 to rotate. This causes the limiting ring 49 to drive the drive gear ring 50 to rotate in the limiting groove, and the drive gear ring 50 to drive the second transmission gear 51 to rotate.
[0074] The collection assembly of this invention also includes a striking cavity 52 located inside the first collection box 42 and used in conjunction with the second scraper 47, and several third rotating rods 54 arranged in a circular array and rotatably disposed in the striking cavity 52. The striking cavity 52 is a small distance from the material trough, which facilitates the transmission of vibration to the inner wall of the material trough. The third rotating rods 54 are inclinedly disposed inside the first collection box 42 and are arranged parallel to the second scraper 47. The vertical cross-section of the striking cavity 52 is rectangular, and the length direction of the vertical cross-section is parallel to the third rotating rods 54. Several striking structures 55 are evenly provided on the third rotating rods 54 to strike the striking cavity 52. When the striking structures 55 are working, they can generate vibration to assist the second scraper 47 in cleaning the liquid paint droplets on the material trough.
[0075] In this embodiment, when the third rotating rod 54 rotates, it causes the striking structure 55 to rotate, which in turn causes the striking structure 55 to strike the striking cavity 52, causing vibration on the feeding trough and assisting the second scraper 47 in cleaning the liquid paint droplets on the feeding trough.
[0076] The collecting component of this invention also includes a second auxiliary gear 56 rotatably disposed in the limiting groove and coaxially connected to the third rotating rod 54. The third rotating rod 54 is provided with a second transmission rod 53 connected to the second auxiliary gear 56. The second auxiliary gear 56 meshes with the second transmission gear 51, so that when the driving gear ring 50 rotates, the second transmission gear 51 controls the third rotating rod 54 to work through the second auxiliary gear 56, and the striking structure 55 strikes the striking cavity 52.
[0077] In this embodiment, when the second scraper 47 drives the drive gear ring 50 to rotate through the connector 48 and the limiting ring 49, the drive gear ring 50 drives several second transmission gears 51 to rotate. The second transmission gears 51 drive the second auxiliary gears 56 to rotate, which in turn drives the second transmission rod 53 to rotate. The second transmission rod 53 then drives the third rotating rod 54 to rotate in the striking cavity 52.
[0078] In this invention, the striking structure 55 includes a striking ring 57 coaxially connected to the third rotating rod 54 and striking blocks 58 vertically disposed on the outer wall of the striking ring 57. The striking blocks 58 are made of a flexible wear-resistant material, and a plurality of striking blocks 58 are arranged in a circular array on the striking ring 57.
[0079] In this embodiment, when the second transmission rod 53 drives the third rotating rod 54 to rotate in the striking cavity 52, the third rotating rod 54 drives several striking rings 57 to rotate, and the striking rings 57 drive the striking block 58 to strike the striking cavity 52.
[0080] A rotating rod 59 extending into the second collection box 43 is vertically installed at the bottom of the rotating frame 46. A negative pressure fan 60 is provided at the bottom of the rotating rod 59. When the rotating block 29 controls the negative pressure fan 60 to rotate through the rotating rod 59, a negative pressure airflow is generated in the second collection box 43, which accelerates the entry of liquid paint droplets at the discharge port into the second collection box 43. An exhaust hole is provided on the upper part of the outer wall of the second collection box 43. Both the rotating rod 59 and the negative pressure fan 60 are provided with an anti-stick coating.
[0081] In this embodiment, when the rotating frame 46 rotates, it causes the rotating rod 59 to rotate, and the rotating rod 59 causes the negative pressure fan 60 to rotate, so that the negative pressure fan 60 generates a negative pressure airflow in the second collection box 43, which draws the paint liquid at the discharge port into the second collection box 43.
[0082] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.
Claims
1. A method for processing an electromagnetic coil, characterized in that, Includes the following steps: S1. The pre-treated electromagnetic wire is wound using a winding machine, and the coil is then tightened. S2. Place the coil into the inner tank (2) inside the impregnation tank (1), seal it, and then evacuate until all the air inside the impregnation tank (1) is completely removed. S3. Inject paint into the inner tank (2) so that the paint completely covers the coil. Then, enter the segmented pressurization stage, control the inner tank (2) to rotate forward and backward, and remove the paint foam in the inner tank (2) through the defoaming component. S4. Release the internal pressure of the impregnation tank (1), take out the coil and drip it dry, remove the excess paint liquid on the surface of the coil, put the coil back into the inner tank (2), and re-evacuate the vacuum. The paint liquid foam that was extracted is formed into liquid paint droplets through the protective component, so that the collection component collects the liquid paint droplets. S5. Inject paint into the inner tank (2), and maintain pressure through the hydraulic pressurization device (6) to ensure that the paint completely fills all gaps. Then take out the coil and drip off the excess paint on the surface. S6. Place the insulated coil into a curing device for thorough curing, and then test the coil's performance using testing equipment.
2. The method for processing an electromagnetic coil according to claim 1, characterized in that, The impregnation tank (1) is provided with a sealable lid (3). The can lid (3) is provided with two buffer boxes (24); One of the buffer boxes (24) is connected to the vacuum pump (4) via a suction pipe (23); Another of the aforementioned buffer boxes (24) is connected to a hydraulic pressurization device (6) via an air supply pipe; The impregnation tank (1) is symmetrically provided with paint injection pipes (5) for injecting paint into the inner tank (2); The bottom end of the buffer box (24) is provided with a sealed air duct (25) that penetrates the can lid (3). The bottom of the impregnation tank (1) is provided with a first drive motor (8) that controls the rotation of the inner tank (2).
3. The method for processing an electromagnetic coil according to claim 1, characterized in that, In step S2, before placing the coil into the impregnation tank (1), the surface of the coil needs to be cleaned. The processed coil is placed into the inner tank (2) inside the impregnation tank (1), the tank lid (3) is closed and sealed, and the vacuum pump (4) is started to draw a vacuum, reducing the air pressure inside the impregnation tank (1) to below 10Pa. The vacuuming continues for 30-40 minutes to completely remove the air and moisture from the inside of the coil and the gaps between the coil turns. In step S3, modified epoxy resin paint is injected into the inner tank (2) through the paint injection pipe (5), ensuring that the paint completely covers the top of the coil by more than 50mm. The control valve on the paint injection pipe (5) is closed, and then the segmented pressurization stage is entered. The gradient pressurization mode is adopted, the hydraulic pressurization device (6) is started, and inert gas is injected. The pressure is first raised to 0.5-1MPa and maintained for 15-20 minutes to allow the paint to initially penetrate into the gaps on the surface of the coil. Then the pressure is gradually increased to 1.5-2MPa and maintained for 25-30 minutes to allow the paint to immerse the inside of the coil and the tiny gaps.
4. The method for processing an electromagnetic coil according to claim 1, characterized in that, The defoaming component includes: The defoaming component (16) is movably installed in the inner tank (2) and punctures the paint foam. The defoaming component (16) is connected to the fixing block (14) by the reinforcing rod (15). The first rotating ring (12) is rotatably disposed in the impregnation tank (1), and the first rotating ring (12) is fixed to the first connecting ring (13) by means of a fixing block (14); When the first rotating ring (12) drives the first connecting ring (13) to rotate, several fixed blocks (14) control the defoaming component (16) to rotate through the reinforcing rod (15), thus puncturing the paint foam.
5. A method for processing an electromagnetic coil according to claim 4, characterized in that, The defoaming component also includes: The second connecting ring (17) is disposed on the outer wall of the inner tank (2). The outer side of the second connecting ring (17) is connected to the first rotating toothed ring (18). The interior of the impregnation tank (1) is provided with a plurality of first rotating gears (19) that mesh with the first rotating toothed ring (18). The second rotating gear (22) is rotatably disposed inside the impregnation tank (1) and is coaxially connected to the first rotating gear (19) via the first transmission rod (20); The second rotating gear ring (21) is disposed on the outer wall of the first rotating ring (12), and the second rotating gear ring (21) meshes with a plurality of second rotating gears (22).
6. A method for processing an electromagnetic coil according to claim 2, characterized in that, The protective components include: A filter cover (26) is installed on the inner top surface of the can lid (3). The filter cover (26) has a number of filter screens (27) arranged in a circular array. The filter cover (26) has a number of cleaning rods (41) on its outer side. A rotating block (29) is rotatably mounted on the lower end face of the filter cover (26), and a first scraper (31) that fits against the filter screen (27) is installed by a reinforcing block (30). The cleaning ring (37) is rotatably mounted on the inside of the filter cover (26) by the first rotating rod (33). The first rotating rod (33) is controlled to rotate by the second drive motor (28). The cleaning ring (37) is elastically provided with a cleaning block (39) for knocking and cleaning the filter screen (27) through the connecting pipe (38). The second drive motor (28) controls the rotating block (29) to rotate.
7. A method for processing an electromagnetic coil according to claim 6, characterized in that, The protective components also include: The main gear ring (34) meshes with the output shaft of the second drive motor (28), and a number of first transmission gears (35) are engaged on the outer side of the main gear ring (34). The first auxiliary gear (36) is coaxially connected to the first rotating rod (33), and the first auxiliary gear (36) meshes with the first transmission gear (35).
8. A method for processing an electromagnetic coil according to claim 6, characterized in that, The collection component includes: The first collection box (42) is installed on the inner top surface of the can lid (3), and the first collection box (42) is inserted into the filter cover (26); The second collection box (43) is detachably installed at the bottom of the first collection box (42) and communicates with the first collection box (42); The first collection box (42) has a through groove aligned with the filter screen (27); The lower inner side of the first collection box (42) is provided with a feeding trough in the shape of a circular funnel; Several cleaning rods (41) are vertically installed on the inner top surface of the first collection box (42); The rotating block (29) is vertically mounted with a rotating frame (46) via a second rotating rod (45). The rotating frame (46) is provided with a second scraper (47) arranged in a circular array to clean the feed trough.
9. A method for processing an electromagnetic coil according to claim 8, characterized in that, The collection component includes: The connector (48) is integrally connected to the upper part of the second scraper (47). The connector (48) is provided with a limiting ring (49) that fits and seals against the first collection box (42). The outer wall of the limiting ring (49) is provided with a drive toothed ring (50). The third rotating rod (54) is rotatably disposed in the striking cavity (52) inside the first collection box (42), and the third rotating rod (54) strikes the striking cavity (52) through the striking structure (55); The second auxiliary gear (56) is coaxially connected to the third rotating rod (54) via the second transmission rod (53), and the second transmission gear (51) meshes with one side of the second auxiliary gear (56). The second transmission gear (51) meshes with the drive gear ring (50).
10. A method for processing an electromagnetic coil according to claim 9, characterized in that, The bottom end of the rotating frame (46) is vertically mounted with a rotating rod (59) that extends into the second collection box (43). The bottom end of the rotating rod (59) is equipped with a negative pressure fan (60). The upper part of the outer wall of the second collection box (43) is provided with an exhaust hole; When the rotating block (29) controls the negative pressure fan (60) to rotate via the rotating rod (59), a negative pressure airflow is generated in the second collection box (43), which accelerates the entry of liquid paint droplets at the discharge port into the second collection box (43).