An automobile starter stator filling equipment

Abstract

This invention belongs to the field of stator impregnation technology, specifically a stator impregnation device for automobile starters. The impregnation device includes a base; four columns are fixed on the base; two opposing side plates are fixed to the middle of each column on the same side; two sliding plates are provided between the two side plates; two placement cylinders rotate on the two sliding plates; impregnation mechanisms are provided on both the upper and lower sides of the side plates; each impregnation mechanism includes a U-shaped frame; sealing plates slide within the two U-shaped frames; a first electric push rod is installed on the left side of the two U-shaped frames; each sealing plate has a round hole on the side facing the two placement cylinders; an injection component is installed in the round hole of the upper sealing plate; a collection component is installed at the bottom of the lower sealing plate. This invention, by setting up the impregnation device, can avoid the inherent defects of stator outer ring paint adhesion and paint film residue in traditional full impregnation processes.

Description

Technical Field

[0001] This invention belongs to the field of stator impregnation technology, specifically a stator impregnation equipment for automobile starters. Background Technology

[0002] The start-stop system of new energy vehicles, especially hybrid models, places far higher demands on the reliability and durability of the starter motor than traditional fuel vehicles. As the core electromagnetic component of the starter motor, the quality of its insulation treatment directly determines the overall performance and service life of the machine. The main body of the starter motor stator is a seamless metal cylinder with a smooth outer ring. The inner wall is fixed with excitation poles or permanent magnets by riveting or bonding. Excitation winding coils are wound on the poles. After shaping and binding, the windings need to undergo an impregnation process to complete insulation protection, structural fixation, and thermal conductivity enhancement. This is the core process in starter motor manufacturing.

[0003] Currently, in the mass production of starter stators for new energy vehicles, the mainstream method is atmospheric pressure full immersion process, while high-end production lines are equipped with vacuum impregnation process. Atmospheric pressure full immersion process is the preferred choice for small-to-medium batch production and after-sales maintenance due to its low equipment threshold and flexible operation. The core process is as follows: after the stator completes winding binding and initial electrical inspection, it is pre-dried and dehumidified to remove moisture from the windings, then immersed entirely in an insulating varnish bath under atmospheric pressure. After the varnish has soaked the windings, it is removed and allowed to drip dry, then cured in sections at high temperature to form an insulating varnish film. Vacuum impregnation process, on the other hand, improves the penetration effect through negative pressure exhaust and is mostly used for high-end products with high reliability requirements.

[0004] Existing varnishing processes can lead to varnish residue on the smooth outer surface of the stator: In the full immersion process, the entire stator is immersed in varnish, and insulating varnish inevitably adheres to the smooth outer surface. Even after dripping, a thin varnish film remains. This residual varnish film directly causes excessive interference fit between the stator outer ring and the front and rear end covers and engine mounting positions, leading to assembly difficulties, coaxiality misalignment, and in severe cases, rotor rubbing and abnormal operating noise. At the same time, the residual varnish film requires additional manual polishing, which increases manufacturing costs and can easily scratch the metal substrate, affecting the consistency of product batches.

[0005] Meanwhile, during immersion at normal pressure, air cannot be completely expelled from the winding turns and the gaps between the magnetic poles and the coil, forming a closed air barrier that hinders the penetration of the varnish, resulting in no effective varnish film coverage in the corresponding locations; the insulation withstand voltage of the un-varnished winding parts decreases significantly, and under the frequent high-current start-stop impact of the starter motor, it is very easy to have inter-turn short circuits and leakage breakdown faults; at the same time, the coil without varnish film bonding is easy to loosen and shift under the action of vehicle vibration and alternating electromagnetic force, accelerating the wear of the insulation layer, greatly shortening the service life of the starter motor, and failing to meet the high reliability requirements of the start-stop system of new energy vehicles. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a stator painting device for automobile starters. By setting up the painting device, the inherent defects of paint adhesion and paint film residue on the outer ring of the stator in the traditional full immersion process can be avoided; the specific structure is as follows; A painting device for automotive starter stator, the painting device includes a base; four columns are fixed on the base, and a top plate is fixed on two columns located on the same side respectively; Two opposing side plates are fixed to the middle of the column located on the same side; two sliding tracks are opened on the opposite side of the side plates; Two sliding plates are provided between the two side plates, and sliding plates are fixed on both sides of the sliding plates, and the sliding plates slide in the slide rail; Two placement cylinders rotate on the two moving plates, and the placement cylinders on the two moving plates are arranged in a mirror image; each placement cylinder has a retaining ring on its opposite side; the inner diameter of the placement cylinder is the same as the outer diameter of the stator, and the inner diameter of the retaining ring is the same as the inner diameter of the stator; the stator is inserted between the two placement cylinders. The side plate is equipped with a paint filling mechanism on both the upper and lower sides; the paint filling mechanism includes a spiral frame; hydraulic cylinders are installed at the four corners of the spiral frame, with the upper hydraulic cylinder installed on the top plate and the lower hydraulic cylinder installed on the bottom plate. A sealing plate slides within the two loop-shaped frames; a first electric actuator is installed on the left side of the two loop-shaped frames, and the extension rod of the first electric actuator is fixed to the sealing plate; Both sealing plates have round holes on one side facing the two placement cylinders; an injection assembly is installed in the round hole of the upper sealing plate; and a collection assembly is installed at the bottom of the lower sealing plate.

[0007] In a preferred embodiment of the present invention, a rotating ring is provided inside each of the circular holes; The collection assembly includes a liquid tank; the liquid tank is installed at the bottom of the lower sealing plate; an outlet pipe is installed at the bottom of the liquid tank, and a valve is provided on the outlet pipe; a rotating ring inside the lower sealing plate is located inside the liquid tank; a suction pipe is fixed on each side of the liquid tank, and the suction pipe is connected to an external air pump. The infusion assembly includes an infusion tube, which is connected to the infusion mechanism via a conduit; a sealing plate is fixed in the middle of the rotating ring located in the upper sealing plate, and the infusion tube rotates within the sealing plate.

[0008] In a preferred embodiment of the present invention, the outer ring of the placement cylinder is fixed with uniformly arranged gear teeth, and all gear teeth are located between the two moving plates; The outer ring of the two placement cylinders on the transfer plate is provided with a toothed belt, which meshes with the gear teeth; a semi-circular groove is opened on the left side of each transfer plate; A first motor is mounted on the sealing plate located at the bottom; a first gear is mounted on the output shaft of the first motor, and the first gear is opposite to the toothed belt; a first tooth groove is formed on the outer ring surface of the toothed belt, and the first gear meshes with the first tooth groove; The maximum diameter of the first gear is smaller than the diameter of the semicircular groove.

[0009] In a preferred embodiment of the present invention, the first gear is provided with blocks on both sides; the bottom of the blocks is provided with a through groove on the sealing plate. A U-shaped frame is installed below the through slot; a second electric push rod is fixed on the U-shaped frame, and the extension rod of the second electric push rod is fixed to the stop block; The sliding plates on both sides of the moving plate are provided with second tooth grooves; the two side plates are provided with evenly arranged second gears on opposite sides, and the second gears extend into the sliding grooves and mesh with the second tooth grooves; the second gears are driven by a second motor.

[0010] In a preferred embodiment of the present invention, the upper sealing plate is provided with two auxiliary components, and the two auxiliary components are located on the right side of the two rotating rings; The auxiliary component includes a socket; an n-shaped frame is installed on the outside of the socket; a filling column is provided below the n-shaped frame; a ring plate is provided on the top of the filling column, and the ring plate is fixed to the outer ring of the filling column; Two third electric actuators are installed on the n-type frame, and the extension rods of the third electric actuators are fixed to the ring plate.

[0011] In a preferred embodiment of the present invention, a cylindrical groove is provided inside the filling column, and the cylindrical groove extends through the top of the filling column, while the bottom of the filling column is closed. The outer ring of the filling column is provided with multiple rows of strip grooves, and the multiple rows of strip grooves are provided on the filling column from top to bottom, and each row of strip grooves includes multiple strip grooves. The outer ring of the filling column is fixed with uniformly arranged guide rings, and the guide rings are opposite to each row of strip grooves. A sliding cylinder slides inside the cylindrical groove, initially blocking all the strip grooves; a horizontal plate is fixed to the bottom of the sliding cylinder; a fourth electric actuator is installed between the two third electric actuators, and the extension rod of the fourth electric actuator is fixed to the horizontal plate.

[0012] In a preferred embodiment of the present invention, an annular cylinder is slidably mounted on the outer ring of the annular plate, and the annular cylinder is a filter screen cylinder; a filter screen is also provided between the horizontal plate and the sliding cylinder.

[0013] In a preferred embodiment of the present invention, two collection compartments are provided at the bottom of the upper sealing plate; Two mounting blocks are fixed to both sides of the collection compartment facing the side plate, and the mounting blocks are fixed to the bottom of the U-shaped frame; the bottom of the collection compartment is in contact with the sliding plate; A conduit is installed on the side of the collection chamber.

[0014] As a preferred embodiment of the present invention, the collection chamber is provided with arc-shaped cavities on both sides, and the diameter of the arc-shaped cavity is the same as the outer diameter of the placement cylinder. When the placement cylinder drives the stator to rotate to the bottom of the collection chamber, one of the placement cylinders will be inserted between the two opposite arc-shaped cavities; the bottom of the arc-shaped cavity is designed with rounded corners.

[0015] The beneficial effects of this invention are as follows: 1. The automotive starter stator painting equipment of the present invention, by clamping the stator in two upper and lower placement cylinders, ensures that the insulating varnish flows directionally only within the inner cavity of the stator, the placement cylinders, and the sealing plate during the entire painting process, without any contact with the outer ring of the stator. This completely eliminates the inherent defects of paint adhesion and varnish residue on the outer ring of the stator in the traditional full immersion process. It eliminates the need for additional manual grinding and cleaning processes, reducing labor and time costs, and avoiding scratches and dimensional deviations on the stator substrate caused by grinding. It thoroughly solves a series of core faults caused by residual varnish on the outer ring, such as excessive interference fit between the stator and the front and rear end caps, engine mounting positions, assembly difficulties, coaxiality misalignment, rotor rubbing, and abnormal operating noises, significantly improving product assembly yield and batch consistency.

[0016] 2. The automotive starter stator coating equipment of the present invention first uses an external air pump to draw negative pressure into the entire sealed cavity through the liquid tank and the suction pipe, completely removing residual air from the stator winding turns, the gaps between the magnetic poles and the coils, and the gaps in the insulation layer. This completely eliminates the air resistance that cannot be removed in the traditional atmospheric pressure immersion process, and fundamentally avoids the hidden danger of air-containing areas not being able to be coated and forming dry insulation areas. Subsequently, the stable positive pressure environment formed by continuous coating forces the insulating varnish to penetrate into the micron-level fine gaps of the winding, achieving full wetting without dead angles. This ensures that a complete and dense insulating varnish film can be formed in all parts of the winding, greatly improving the insulation withstand voltage strength, impact and vibration resistance, and thermal conductivity of the stator.

[0017] 3. The automotive starter stator painting equipment of the present invention can continuously flush and pull the residual paint on the surface of the stator winding during the airflow process, accelerating the dripping speed of the paint inside the stator. At the same time, since the stator is rotating at a constant speed with the placement cylinder below, the inner ring of the rotating stator winding can be evenly contacted by the airflow in all directions, allowing the airflow to continuously carry away the residual paint dripping on the surface of the winding and in the gaps between the turns. The residual paint is then carried downward by the airflow and finally drips into the liquid tank, further shortening the dripping cycle. At the same time, it avoids the problem of residual paint dripping downward when the stator is transferred after dripping, causing pollution to the equipment and workshop floor, and the problem of residual paint dripping onto the stator assembly surface causing dimensional deviations. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the coating impregnation equipment of the present invention; Figure 2 This is a structural diagram of the paint impregnation equipment of the present invention; Figure 3 This is a state diagram of the moving plate and the placement cylinder holding the stator in this invention; Figure 4 This is a structural diagram of the lower paint-filling mechanism in this invention. Figure 5 This is a diagram showing the separated structure of the upper paint-filling mechanism in this invention; Figure 6 This is a structural diagram of the separated auxiliary components in this invention; Figure 7 This is a top view of the coating equipment of the present invention; Figure 8 This is the present invention. Figure 7 Cross-sectional view at point AA of the intermediate immersion paint equipment during preparation for immersion paint application; Figure 9 This is the present invention. Figure 8 Enlarged view of a section at point B in the middle; Figure 10 This is the present invention. Figure 8 Enlarged view of a section at point C; Figure 11 This is the present invention. Figure 7 Cross-sectional view of the intermediate immersion paint equipment at point AA during dripping; Figure 12 This is the present invention. Figure 11 Enlarged view of a section at point D; Figure 13 This is the present invention. Figure 12 Enlarged view of a section at point E in the middle.

[0020] In the diagram: 1. Column; 11. Top plate; 12. Side plate; 13. Slide rail; 14. Stator; 2. Moving plate; 21. Slide plate; 22. Placement cylinder; 221. Retaining ring; 23. Gear tooth; 24. Toothed belt; 25. Semicircular groove; 26. First gear; 27. Stop block; 28. Second electric actuator; 29. ​​Second gear; 3. Return frame; 31. Hydraulic cylinder; 32. Sealing plate; 33. First electric actuator; 3 4. Rotating ring; 4. Liquid tank; 41. Outlet pipe; 42. Extraction pipe; 43. Filling pipe; 44. Sealing plate; 5. N-shaped frame; 51. Insertion hole; 52. Filling column; 53. Ring plate; 54. Third electric actuator; 55. Strip groove; 56. Guide ring; 57. Slide cylinder; 571. Horizontal plate; 58. Fourth electric actuator; 59. Ring cylinder; 6. Collection tank; 61. Mounting block; 62. Conduit; 63. Arc cavity. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 13 As shown, the automotive starter stator painting equipment of the present invention is an embodiment of the present invention; the painting equipment includes a base; four columns 1 are fixed on the base, and a top plate 11 is fixed on two columns 1 located on the same side respectively; Two opposing side plates 12 are fixed to the middle part of the column 1 located on the same side; two slide rails 13 are opened on the opposite side of the side plates 12; Two sliding plates 2 are provided between the two side plates 12, and sliding plates 21 are fixed on both sides of the sliding plates 2, and the sliding plates 21 slide within the slide rail 13; Two placement cylinders 22 rotate on the two moving plates 2, and the placement cylinders 22 on the two moving plates 2 are mirror images of each other; each placement cylinder 22 is provided with a retaining ring 221 on its opposite side; the inner diameter of the placement cylinder 22 is the same as the outer diameter of the stator 14, and the inner diameter of the retaining ring 221 is the same as the inner diameter of the stator 14; the stator 14 is inserted between the two placement cylinders 22. The side plate 12 is provided with a paint filling mechanism on both the upper and lower sides; the paint filling mechanism includes a spiral frame 3; a hydraulic cylinder 31 is installed at each of the four corners of the spiral frame 3, and the upper hydraulic cylinder 31 is installed on the top plate 11, and the lower hydraulic cylinder 31 is installed on the bottom plate. A sealing plate 32 slides inside the two loop-shaped frames 3; a first electric push rod 33 is installed on the left side of the two loop-shaped frames 3, and the extension rod of the first electric push rod 33 is fixed on the sealing plate 32; Both sealing plates 32 have round holes on one side facing the two placement cylinders 22; an injection assembly is installed in the round hole of the upper sealing plate 32; and a collection assembly is installed at the bottom of the lower sealing plate 32.

[0023] In this embodiment, a rotating ring 34 rotates within each of the circular holes; the collection assembly includes a liquid tank 4; the liquid tank 4 is installed at the bottom of the lower sealing plate 32; an outlet pipe 41 is installed at the bottom of the liquid tank 4, and a valve is provided on the outlet pipe 41; the rotating ring 34 in the lower sealing plate 32 is located inside the liquid tank 4; a suction pipe 42 is fixed on each side of the liquid tank 4, and the suction pipe 42 is connected to an external air pump; the filling assembly includes a filling pipe 43, and the filling pipe is connected to the filling mechanism through a conduit 62; a sealing plate 44 is fixed in the middle of the rotating ring 34 in the upper sealing plate 32, and the filling pipe 43 rotates within the sealing plate 44.

[0024] Specifically, the starter stator 14 to be processed is first inserted into the placement cylinder 22 of the lower moving plate 2, so that the bottom end face of the stator 14 is completely in contact with the retaining ring 221 at the bottom of the placement cylinder 22. Then, the placement cylinder 22 on the upper moving plate 2 is inserted on the top of the stator 14, so that the top end face of the stator 14 is completely in contact with the retaining ring 221 at the top of the upper placement cylinder 22. The coaxial positioning and clamping of the stator 14 is completed by the two sets of mirror-arranged placement cylinders 22. After clamping, the slide plates 21 on both sides of the two moving plates 2 are slid into the slide rails 13 of the two side plates 12 on the same side by a conveyor belt or matching transport mechanism. The moving plates 2 are pushed to move along the slide rails 13 until the placement cylinder 22 is coaxially aligned with the round holes on the sealing plates 32 of the upper and lower painting mechanisms, thus completing the station positioning.

[0025] Specifically, after the workstation positioning is completed, the upper hydraulic cylinder 31 installed on the control top plate 11 and the lower hydraulic cylinder 31 installed on the base extend synchronously, driving the loop frames 3 of the upper and lower paint filling mechanisms to move towards the placement cylinder 22. During the movement, the loop frames 3 synchronously drive the sealing plates 32 to move until the upper and lower sealing plates 32 are completely in contact with the end faces of the placement cylinder 22 on the corresponding sides. At this time, the placement cylinders 22 at the top and bottom of the stator 14 are pressed and pressed together by the sealing plates 32 on both sides. The inner ring of the placement cylinder 22 is coaxially connected with the rotating ring 34 rotatably set in the circular hole, so that a completely closed independent cavity is formed between the inner cavity of the stator 14, the upper and lower placement cylinders 22, the upper and lower rotating rings 34, and the liquid tank 4. Subsequently The external air pump connected to the extraction pipe 42 is started, and negative pressure is continuously extracted from the inside of the liquid tank 4 through the extraction pipe 42. Since the liquid tank 4 and the closed cavity are connected through the rotating ring 34 in the lower sealing plate 32, the negative pressure is synchronously transmitted to the entire closed cavity, and the air is extracted from the inside of the stator 14 in the placement cylinder 22, the winding turns, and the gap between the magnetic pole and the coil. At the same time, the negative pressure is transmitted to the injection pipe 43 through the upper rotating ring 34, completely removing the residual air in the entire closed cavity, so that a stable negative pressure environment is formed in the inside of the stator 14. This completely eliminates the problem of gas not being able to be discharged and forming air resistance that hinders the penetration of paint in the traditional soaking process, and avoids the hidden danger of paint not being able to be absorbed in the air-containing areas from the root.

[0026] More specifically, after the vacuuming operation is completed, the first electric actuator 33 installed on the left side of the lower paint filling mechanism's loop frame 3 retracts, pulling the lower sealing plate 32 to slide to the left within the lower loop frame 3. This causes the rotating ring 34 on the sealing plate 32 to move with the sealing plate 32, gradually misaligning with the bottom placement cylinder 22 until the rotating ring 34 is completely misaligned with the placement cylinder 22. At this point, the bottom of the placement cylinder 22 is completely sealed by the surface of the lower sealing plate 32, forming a leak-free, closed paint filling cavity. Subsequently, insulating varnish is injected into the closed cavity through the filling pipe 43 inside the upper sealing plate 32. The liquid enters the stator 14 through the upper rotating ring 34 and the placement cylinder 22. Since the bottom placement cylinder 22 has been sealed by the sealing plate 32, the liquid will not leak downwards and will gradually fill the inner cavity of the stator 14 and the closed space of the upper and lower placement cylinders 22. After the liquid has completely filled the cavity, the liquid is continuously introduced into the injection pipe 43 to form a stable positive pressure environment in the closed cavity. The pressure forces the insulating varnish into the winding turns, the tiny gaps between the magnetic poles and the coils, and the gaps in the insulation layer, achieving penetration without dead angles and completely solving the problems of incomplete local impregnation and dry areas in the traditional process.

[0027] Furthermore, after the stator 14 is dipped in paint, the injection of paint into the filling pipe 43 is stopped. Then, the first electric push rod 33 on the left side of the lower loop frame 3 is extended, which drives the lower sealing plate 32 to return to its initial state, so that the rotating ring 34 on the bottom sealing plate 32 is re-coaxially aligned with the bottom placement cylinder 22. The excess paint in the inner cavity of the stator 14 flows into the liquid tank 4 through the lower rotating ring 34 under the action of gravity. The paint flowing into the liquid tank 4 can be discharged and recycled through the bottom outlet pipe 41 to realize the recycling of paint and reduce the cost of production consumables. After the paint inside the stator 14 has completely dripped and there is no continuous paint flow, the upper and lower hydraulic cylinders 31 are controlled to retract and reset, which drives the painting mechanism to retract. Then, the moving plate 2 is controlled to move out along the slide 13 of the side plate 12 to complete the painting operation of a single set of stators 14. At the same time, the clamping and feeding of the next set of stators 14 can be carried out simultaneously to realize continuous production.

[0028] Furthermore, by clamping the stator 14 within the upper and lower placement cylinders 22, the insulating varnish flows directionally only within the inner cavity of the stator 14, the sealed cavity formed by the placement cylinders 22 and the sealing plate 32 during the entire varnishing process, without any contact with the outer ring of the stator 14. This completely eliminates the inherent defects of varnish residue on the outer ring of the stator 14 in the traditional full immersion process. No additional manual grinding and cleaning process is required, which reduces labor and time costs and avoids scratches and dimensional deviations on the stator 14 substrate caused by grinding. It completely solves a series of core faults caused by residual varnish on the outer ring, such as excessive interference fit between the stator 14 and the front and rear end covers and engine mounting positions, assembly difficulties, coaxiality misalignment, rotor rubbing, and abnormal operating noise. This significantly improves the product assembly yield and batch consistency.

[0029] Simultaneously, an external air pump first applies negative pressure to the entire sealed cavity through liquid tank 4 and extraction pipe 42, completely removing residual air from the winding turns of stator 14, the gaps between magnetic poles and coils, and the gaps in the insulation layer. This completely eliminates the air resistance that cannot be removed in the traditional atmospheric pressure immersion process, fundamentally avoiding the hidden danger of air-containing areas not being able to be varnished and forming dry insulation zones. Subsequently, the stable positive pressure environment formed by continuous varnishing forces the insulating varnish to penetrate into the micron-level fine gaps of the winding, achieving full immersion without dead angles. This ensures that a complete and dense insulating varnish film can be formed in all positions of the winding, significantly improving the insulation withstand voltage strength, impact and vibration resistance, and thermal conductivity of stator 14.

[0030] As an embodiment of the present invention; the outer ring of the placement cylinder 22 is fixed with uniformly arranged gear teeth 23, and the gear teeth 23 are all located between the two moving plates 2; the outer ring of the two placement cylinders 22 located on the moving plates 2 is provided with a toothed belt 24, and the toothed belt 24 meshes with the gear teeth 23; a semi-circular groove 25 is opened on the left side of each moving plate 2; a first motor is installed on the sealing plate 32 located at the bottom; a first gear 26 is installed on the output shaft of the first motor, and the first gear 26 is opposite to the toothed belt 24; a first tooth groove is opened on the outer ring surface of the toothed belt 24, and the first gear 26 meshes with the first tooth groove; the maximum diameter of the first gear 26 is smaller than the diameter of the semi-circular groove 25.

[0031] In this embodiment, the first gear 26 is provided with stop blocks 27 on both sides; the bottom of the stop block 27 is provided with a through groove on the sealing plate 32; a U-shaped frame is installed below the through groove; a second electric push rod 28 is fixed on the U-shaped frame, and the extension rod of the second electric push rod 28 is fixed to the stop block 27; a second tooth groove is provided on the sliding plate 21 on both sides of the moving plate 2; a second gear 29 is provided on the opposite side of the two side plates 12, and a portion of the second gear 29 extends into the sliding groove and meshes with the second tooth groove; the second gear 29 is driven by a second motor.

[0032] When the sliding plates 21 on both sides of the moving plate 2 slide into the slide rails 13 of the two side plates 12 on the same side, the second motors set on the opposite sides of the two side plates 12 start synchronously. The second motors drive the corresponding second gears 29 to rotate. The rotating second gears 29 drive the sliding plates 21 on both sides to move smoothly and linearly along the slide rails 13, thereby driving the moving plate 2, the placement cylinder 22, and the clamped stator 14 to move synchronously along the slide rails 13. When the lower moving plate 2 moves to be completely in contact with the left-side extended stop 27, the second motor stops rotating. At this time, the first motor installed on the bottom sealing plate 32 outputs its shaft... The first gear 26 installed on the upper part is located above the semi-circular groove 25 opened on the left side of the moving plate 2, and the first gear 26 meshes with the first tooth groove opened on the outer ring surface of the toothed belt 24. Then, the vacuuming operation of the inner cavity of the stator 14 is performed, and the first electric push rod 33 of the lower paint filling mechanism is controlled to retract, driving the lower sealing plate 32 to move and seal the bottom placement cylinder 22. When the lower sealing plate 32 moves, it will drive the first motor and the first gear 26 to gradually move out from above the semi-circular groove 25 and gradually move away from the toothed belt 24. Then, the paint filling operation is performed into the stator 14 through the filling tube 43 in the upper sealing plate 32.

[0033] Specifically, after the stator 14 is dipped in paint, the first electric push rod 33 of the lower paint filling mechanism is extended, driving the lower sealing plate 32 to move and reset, so that the rotating ring 34 on the bottom sealing plate 32 and the bottom placement cylinder 22 are re-coaxially aligned. At the same time, the first gear 26 is driven to mesh with the first tooth groove on the outer ring of the toothed belt 24 again. Meanwhile, the excess paint in the inner cavity of the stator 14 can flow into the liquid tank 4 below through the rotating ring 34. At this time, the first motor is started, and the first motor drives the first gear 26 on the output shaft to rotate. The rotating first gear 26 drives the toothed belt 24 to rotate synchronously through the meshing first tooth groove. The rotating toothed belt 24 will synchronously drive the upper and lower placement cylinders 22 to rotate on the moving plate 2. The stator 14 is clamped and fixed between the two placement cylinders 22. With the rotation of the lower placement cylinder 22, the stator 14 and the upper placement cylinder 22 are synchronously rotated coaxially. At the same time, the end face of the placement cylinder 22 is in contact with the rotating ring 34 in the round hole of the corresponding side sealing plate 32. During the rotation, the placement cylinder 22 will drive the rotating ring 34 to rotate synchronously.

[0034] More specifically, during the uniform rotation of stator 14, the varnish around the winding is evenly distributed under the action of centrifugal force, which completely avoids the problems of uneven thickness of the varnish film and thin varnish film at tooling contact points caused by traditional unidirectional static dripping. After curing, the uniformity and consistency of the varnish film are greatly improved, further strengthening the insulation protection, structural fixation and thermal conductivity of the winding, and improving the electrical reliability and service life of stator 14.

[0035] As an embodiment of the present invention; the upper sealing plate 32 is provided with two auxiliary components, and the two auxiliary components are located on the right side of the two rotating rings 34; the auxiliary components include a socket 51; an n-shaped frame 5 is installed on the outside of the socket 51; a filling column 52 is provided below the n-shaped frame 5; a ring plate 53 is provided on the top of the filling column 52, and the ring plate 53 is fixed to the outer ring of the filling column 52; two third electric actuators 54 are installed on the n-shaped frame 5, and the extension rods of the third electric actuators 54 are fixed on the ring plate 53.

[0036] In this embodiment, a cylindrical groove is formed inside the filling column 52, and the cylindrical groove extends through the top of the filling column 52, while the bottom of the filling column 52 is closed. Multiple rows of strip grooves are formed on the outer ring of the filling column 52, arranged from top to bottom, and each row of strip grooves includes multiple strip grooves 55. Evenly arranged guide rings 56 are fixed to the outer ring of the filling column 52, and the guide rings 56 are opposite to each row of strip grooves. A sliding cylinder 57 slides inside the cylindrical groove, initially sealing all strip grooves 55. A horizontal plate 571 is fixed to the bottom of the sliding cylinder 57. A fourth electric actuator 58 is installed between the two third electric actuators 54, and the extension rod of the fourth electric actuator 58 is fixed to the horizontal plate 571.

[0037] In this embodiment, an annular cylinder 59 slides on the outer ring of the annular plate 53, and the annular cylinder 59 is a filter screen cylinder; a filter screen is also provided between the horizontal plate 571 and the sliding cylinder 57.

[0038] When the stator 14 is finished with its paint impregnation process and excess paint flows into the liquid tank 4 through the lower rotating ring 34, the hydraulic cylinder 31 installed on the upper top plate 11 is first controlled to retract, causing the upper U-shaped frame 3 and the sealing plate 32 inside the U-shaped frame 3 to move upward synchronously, providing clearance for the switching of auxiliary components. Then, the first electric actuator 33 installed on the left side of the upper U-shaped frame 3 is controlled to retract, pulling the sealing plate 32 inside the U-shaped frame 3 to move horizontally, simultaneously causing the two auxiliary components installed on the sealing plate 32 to move synchronously until the filling column 52 of the auxiliary components is coaxially aligned with the placement cylinder 22 below and the inner cavity of the stator 14. After alignment, the two third electric actuators 54 installed on the n-shaped frame 5 are controlled to extend synchronously. The extension rod pushes the ring plate 53 and the filling column 52 fixed in the inner ring of the ring plate 53 to move vertically downward, so that the filling column 52 extends into the inner cavity of the stator 14. During the downward movement, a uniform annular gap is reserved between the outer ring of the filling column 52 and the winding of the inner wall of the stator 14. At the same time, a gap is reserved between the bottom surface of the ring plate 53 and the top end face of the upper placement cylinder 22 to avoid sticking and blocking. Simultaneously, the ring cylinder 59, which is slidably set on the outer ring of the ring plate 53, is put into contact with the outer ring of the insertion hole 51. The ring cylinder 59 is a filter screen cylinder, which can filter the external gas entering the inner cavity of the stator 14 when the gas flows, isolate dust and other impurities in the air, and prevent impurities from entering the inner cavity of the stator 14 and adhering to the winding varnish film, causing insulation defects and poor withstand voltage.

[0039] Specifically, an external air pump connected to the side suction pipe 42 of the control liquid tank 4 continuously performs suction operations. The suction pipe 42 continuously draws gas from the liquid tank 4 to form a negative pressure. The negative pressure is simultaneously transmitted to the inner cavity of the stator 14, causing the external gas to pass through the filter of the annular cylinder 59 and enter the placement cylinder 22 through the reserved gap between the insertion hole 51 and the annular plate 53. Subsequently, it enters the annular space between the filling column 52 and the stator 14 winding and continues to flow downward, forming a stable airflow that runs through from top to bottom. During the airflow process, it can continuously flush and pull the residual paint on the surface of the stator 14 winding. This accelerates the dripping speed of the paint inside the stator 14. At the same time, since the stator 14 is rotating at a constant speed with the placement cylinder 22 below, the inner ring of the rotating stator 14 winding can be evenly contacted by the flowing air in all directions. This allows the airflow to continuously carry away the excess paint dripping from the winding surface and the gaps between the turns, causing the excess paint to flow downward with the airflow and eventually drip into the liquid tank 4. This further shortens the dripping cycle and avoids the problem of residual paint dripping downward when the stator 14 is transferred after dripping, causing pollution to the equipment and workshop floor, as well as the problem of excess paint dripping onto the assembly surface of the stator 14, causing dimensional deviations.

[0040] More specifically, during the process of controlling the filling column 52 to move downward with the third electric push rod 54, the fourth electric push rod 58 is extended synchronously. The extension rod of the fourth electric push rod 58 drives the horizontal plate 571 and the slide cylinder 57 to move vertically downward synchronously with the filling column 52. After the downward movement is completed, the slide cylinder 57 is still in the cylindrical groove of the filling column 52, completely sealing all the strip grooves opened on the outer ring of the filling column 52. This allows external gas to flow only through the reserved gap between the ring plate 53 and the socket 51 to the annular gap between the filling column 52 and the stator 14, and to continue to flow downward along the annular gap, so as to uniformly flush the entire winding section with airflow and accelerate the overall dripping speed of the excess paint.

[0041] Furthermore, after the fluid varnish inside the stator 14 has mostly dripped off, the third electric actuator 54 is extended to move the ring plate 53 down until it is fully in contact with the outer ring of the lower insertion hole 51, thus sealing the insertion hole 51. Simultaneously, the fourth electric actuator 58 retracts, pulling the horizontal plate 571 and the slide cylinder 57 vertically upwards along the cylindrical groove, gradually exposing the multiple rows of strip grooves on the outer ring of the filling column 52 from top to bottom. Since the stator 14 is vertically positioned, due to gravity, the remaining varnish on the windings flows from top to bottom, spreading across the windings at different heights within the stator 14's inner cavity. Uneven paint retention is formed, with more residual paint near the bottom of the stator 14 and less near the top. Based on the paint retention at different heights within the stator 14 cavity, the upward movement of the slide cylinder 57 can be controlled to selectively expose the corresponding number of strip grooves. When there is a large amount of paint retention at the bottom of the stator 14 cavity, the upward movement of the slide cylinder 57 is increased to expose more strip grooves; when there is a small amount of paint retention, the upward movement of the slide cylinder 57 is decreased to expose only a small number of strip grooves, thus achieving precise control of the airflow outlet position.

[0042] Subsequently, during the continuous suction process of the suction tube 42, external gas enters the cylindrical groove through the opening of the cylindrical groove above the slide cylinder 57, and then flows out from the strip groove 55 below the slide cylinder 57, which is no longer blocked. The filter screen set between the horizontal plate 571 and the slide cylinder 57 can filter the gas entering the cylindrical groove, further isolating impurities in the gas and preventing impurities from entering the inner cavity of the stator 14. Since the guide ring 56 fixed on the outer ring of the filling column 52 is opposite to each row of strip grooves, the gas flowing out of the strip groove 55 will enter the guide ring 56, and the opening of the guide ring 56 faces downward, which can guide the flowing gas. The liquid flows vertically downwards along the inner wall of stator 14, acting on the varnish residue on the windings at the corresponding heights. Simultaneously, in conjunction with the uniform rotation of stator 14, the airflow guided by guide ring 56 can make uniform contact with the circumferential direction of the inner windings of stator 14, continuously carrying away the residual varnish residue on the windings at the corresponding heights. This solves the problems of uneven varnish film thickness at different heights, excessive residual varnish residue at the bottom forming varnish nodules, and out-of-tolerance inner hole dimensions when stator 14 is placed vertically for drip drying. It ensures that the varnish film thickness of the windings at different heights of stator 14 is uniform after drip drying, further improving the consistency, adhesion strength, and protective performance of the insulating varnish film.

[0043] Furthermore, after the entire suction and dripping process is completed, the fourth electric actuator 58 is extended to move the slide cylinder 57 down to reset, re-sealing all the strip groove groups. Then, the third electric actuator 54 is retracted to move the ring plate 53 and the filling column 52 up to reset, so that the filling column 52 completely exits the inner cavity of the stator 14. Subsequently, the first electric actuator 33 is extended to move the upper sealing plate 32 back to reset, thus completing the entire dripping process and preparing for the discharge and transfer of the stator 14.

[0044] As an embodiment of the present invention, the bottom of the sealing plate 32 located above is provided with two collection chambers 6; two mounting blocks 61 are fixed on both sides of the collection chambers 6 facing the side plate 12, and the mounting blocks 61 are fixed to the bottom of the U-shaped frame 3; the bottom of the collection chamber 6 is in contact with the moving plate 2; and a conduit 62 is installed on the side of the collection chamber 6.

[0045] In this embodiment, the collection chamber 6 is provided with arc-shaped cavities 63 on both sides, and the diameter of the arc-shaped cavity 63 is the same as the outer diameter of the placement cylinder 22. When the placement cylinder 22 drives the stator 14 to rotate to the bottom of the collection chamber 6, one of the placement cylinders 22 will be inserted between the two opposite arc-shaped cavities 63; the bottom of the arc-shaped cavity 63 is designed with rounded corners.

[0046] When the placement cylinder 22 moves along the slide 13 of the side plate 12 with the moving plate 2 until it is coaxially aligned with the rotating ring 34 on the upper and lower sealing plates 32, the control frame 3 and the sealing plate 32 inside the frame 3 move toward the placement cylinder 22. During the downward movement of the upper frame 3, the collection chamber 6, which is fixed to the bottom of the frame 3 by the mounting block 61, moves downward synchronously until the bottom of the collection chamber 6 is completely in contact with the upper surface of the moving plate 2. When the collection chamber 6 moves downward, the placement cylinder 22 on the left will be inserted into the arc-shaped cavity 63 of the two collection chambers 6 that are arranged opposite each other, and the placement cylinder 22 on the right will be aligned with the right collection chamber. The right-side arc-shaped cavity 63 fits completely. During this process, the placement cylinder 22 and the stator 14 clamped between the two placement cylinders 22 can be precisely positioned a second time to ensure the coaxiality of the placement cylinder 22 and the upper and lower rotating rings 34. The bottom of the arc-shaped cavity 63 adopts a rounded corner design, which can form a smooth guide during the insertion of the placement cylinder 22 into the arc-shaped cavity 63. Even if there is a slight positional deviation of the placement cylinder 22, it can be smoothly inserted into the arc-shaped cavity 63 through the guidance of the rounded corner, avoiding jamming or collision between the placement cylinder 22 and the edge of the arc-shaped cavity 63, and ensuring a smooth and interference-free positioning process.

[0047] Specifically, when the stator 14 is finished with the paint impregnation process, the excess paint in the inner cavity of the stator 14 flows into the liquid tank 4 through the rotating ring 34 on the lower sealing plate 32. While the stator 14 is dripping dry synchronously with the placement cylinder 22, the hydraulic cylinder 31 installed on the upper top plate 11 is controlled to retract, causing the upper U-shaped frame 3 and the sealing plate 32 inside the U-shaped frame 3 to move upwards synchronously. Simultaneously, the upward movement of the U-shaped frame 3 causes the collection chamber 6 to move upwards synchronously. When the collection chamber 6 moves above the placement cylinder 22 and completely avoids the horizontal movement space of the placement cylinder 22, the first electric actuator 33 installed on the left side of the upper U-shaped frame 3 is controlled to retract, pulling the sealing plate inside the U-shaped frame 3. 32 moves horizontally to the left, simultaneously driving the auxiliary components on the sealing plate 32 to move to the left until the auxiliary components are coaxially aligned with the inner cavity of the placement cylinder 22 and the stator 14 below. At the same time, the rotating ring 34 and sealing plate 44 on the sealing plate 32 also move synchronously with the sealing plate 32 to directly above the collection chamber 6. The collection chamber 6 is fixed to the bottom of the loop frame 3 by the mounting block 61, and its position remains fixed. Therefore, the residual paint on the rotating ring 34, sealing plate 44 and the inner wall of the injection pipe 43 will continuously drip into the collection chamber 6 below under the action of gravity. The conduit 62 installed on the side of the collection chamber 6 can continuously discharge the collected residual paint, realizing the unified recycling and treatment of residual paint.

[0048] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An apparatus for potting a stator of an automobile starter, characterized by comprising: The impregnation equipment includes a base; four columns (1) are fixed on the base, and a top plate (11) is fixed on two columns (1) located on the same side respectively; Two opposing side plates (12) are fixed in the middle of the column (1) located on the same side; two slide rails (13) are opened on the opposite side of the side plates (12); Two sliding plates (2) are provided between the two side plates (12), and sliding plates (21) are fixed on both sides of the sliding plates (2), and the sliding plates (21) slide in the slide rail (13); Two placement cylinders (22) rotate on the two moving plates (2), and the placement cylinders (22) on the two moving plates (2) are mirror images of each other; each of the placement cylinders (22) is provided with a retaining ring (221) on the opposite side; the stator (14) is inserted between the two placement cylinders (22); The side plate (12) is provided with a paint filling mechanism on both the upper and lower sides; the paint filling mechanism includes a spiral frame (3); a hydraulic cylinder (31) is installed at each of the four corners of the spiral frame (3), and the upper hydraulic cylinder (31) is installed on the top plate (11), and the lower hydraulic cylinder (31) is installed on the bottom plate. A sealing plate (32) slides inside the two loop frames (3); a first electric push rod (33) is installed on the left side of the two loop frames (3), and the extension rod of the first electric push rod (33) is fixed on the sealing plate (32); Both sealing plates (32) have round holes on one side facing the two placement cylinders (22); an injection assembly is installed in the round hole of the upper sealing plate (32); and a collection assembly is installed at the bottom of the lower sealing plate (32).

2. The automotive starter stator potting equipment of claim 1, wherein: Each of the aforementioned circular holes contains a rotating ring (34); The collection assembly includes a liquid tank (4); the liquid tank (4) is installed at the bottom of the lower sealing plate (32); an outlet pipe (41) is installed at the bottom of the liquid tank (4), and a valve is provided on the outlet pipe (41); a rotating ring (34) in the lower sealing plate (32) is located inside the liquid tank (4); a suction pipe (42) is fixed on each side of the liquid tank (4), and the suction pipe (42) is connected to an external air pump; The filling assembly includes a filling tube (43), and the filling tube is connected to the filling mechanism through a conduit (62); a sealing plate (44) is fixed in the middle of the rotating ring (34) in the upper sealing plate (32), and the filling tube (43) rotates in the sealing plate (44).

3. The automotive starter stator potting equipment of claim 2, wherein: The outer ring of the placement cylinder (22) is fixed with evenly arranged gear teeth (23), and the gear teeth (23) are all located between the two moving plates (2); Two placement cylinders (22) located on the transfer plate (2) are provided with a toothed belt (24) on their outer ring, and the toothed belt (24) meshes with the gear teeth (23); a semi-circular groove (25) is provided on the left side of each transfer plate (2); A first motor is mounted on the sealing plate (32) located at the bottom; a first gear (26) is mounted on the output shaft of the first motor, and the first gear (26) is opposite to the toothed belt (24); a first tooth groove is opened on the outer ring surface of the toothed belt (24), and the first gear (26) meshes with the first tooth groove; The maximum diameter of the first gear (26) is smaller than the diameter of the semicircular groove (25).

4. The automotive starter stator potting equipment of claim 2, wherein: The first gear (26) is provided with stop blocks (27) on both sides; the bottom of the stop block (27) is provided with a through groove on the sealing plate (32); A U-shaped frame is installed below the through slot; a second electric push rod (28) is fixed on the U-shaped frame, and the extension rod of the second electric push rod (28) is fixed to the stop block (27); The sliding plates (21) on both sides of the moving plate (2) are provided with second tooth grooves; the two side plates (12) are provided with evenly arranged second gears (29) on opposite sides, and the second gears (29) extend into the sliding groove and mesh with the second tooth grooves; the second gears (29) are driven by a second motor.

5. The automotive starter stator potting equipment of claim 2, wherein: The upper sealing plate (32) is provided with two auxiliary components, and the two auxiliary components are located on the right side of the two rotating rings (34); The auxiliary component includes a socket (51); an n-shaped frame (5) is installed on the outside of the socket (51); a filling column (52) is provided below the n-shaped frame (5); a ring plate (53) is provided on the top of the filling column (52), and the ring plate (53) is fixed to the outer ring of the filling column (52); Two third electric actuators (54) are installed on the n-type frame (5), and the extension rods of the third electric actuators (54) are fixed on the ring plate (53).

6. The automotive starter stator potting and painting apparatus of claim 5, wherein: The filling column (52) has a cylindrical groove inside, and the cylindrical groove penetrates the top of the filling column (52), while the bottom of the filling column (52) is closed. The outer ring of the filling column (52) is provided with multiple rows of strip grooves, and the multiple rows of strip grooves are provided on the filling column (52) from top to bottom, and each row of strip grooves includes multiple strip grooves (55); The outer ring of the filling column (52) is fixed with uniformly arranged guide rings (56), and the guide rings (56) are opposite to each row of strip grooves. A sliding cylinder (57) slides inside the cylindrical groove. In the initial state, the sliding cylinder (57) blocks all the strip grooves (55). A horizontal plate (571) is fixed at the bottom of the sliding cylinder (57). A fourth electric actuator (58) is installed between the two third electric actuators (54), and the extension rod of the fourth electric actuator (58) is fixed on the horizontal plate (571).

7. The automotive starter stator potting and painting apparatus of claim 6, wherein: The outer ring of the ring plate (53) has a sliding ring cylinder (59), which is a filter cylinder; a filter screen is also provided between the horizontal plate (571) and the sliding cylinder (57).

8. The automotive starter stator potting and painting apparatus of claim 7, wherein: The sealing plate (32) located at the top has two collection compartments (6) at its bottom; Two mounting blocks (61) are fixed on both sides of the collection chamber (6) facing the side plate (12), and the mounting blocks (61) are fixed to the bottom of the U-shaped frame (3); the bottom of the collection chamber (6) is in contact with the moving plate (2); A conduit (62) is installed on the side of the collection chamber (6).

9. The automotive starter stator potting and painting apparatus of claim 8, wherein: The collection chamber (6) has arc-shaped cavities (63) on both sides, and the diameter of the arc-shaped cavity (63) is the same as the outer diameter of the placement cylinder (22). When the placement cylinder (22) drives the stator (14) to rotate to the bottom of the collection chamber (6), one of the placement cylinders (22) will be inserted between the two opposite arc-shaped cavities (63); the bottom of the arc-shaped cavity (63) is rounded.

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