Motor stator winding dipping device

Abstract

The invention discloses a motor stator winding dipping device, and belongs to the technical field of automobile motor manufacturing, the motor stator winding dipping device comprises an elastic tank, an extrusion mechanism and a sealing cover, the elastic tank is provided with an outer convex part, and the top of a casing is provided with an annular opening fixedly connected with a tank opening of the elastic tank; the extruding mechanism is arranged in the machine shell and used for extruding the outer protruding part. The bottom of the sealing cover is provided with a suspension mechanism used for suspending the stator. The elastic tank is arranged in the machine shell, the sealing cover can seal the top of the elastic tank, the extrusion mechanism extrudes the outwards-protruding part of the elastic tank inwards, the pressure intensity of paint liquid in the tank can be increased, the paint liquid is extruded into winding gaps, air in the gaps is promoted to be exhausted, and the outwards-protruding part is extruded repeatedly by the multiple extrusion units, so that the paint liquid is prevented from leaking out. The paint liquid in the tank can generate directional impact force to actively impact a stator winding gap, so that bubbles in the winding gap are scoured out, the filling rate of the paint liquid to a winding deep gap is improved, and the stator paint dipping effect of an automobile motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile motor manufacturing, and in particular to a motor stator winding impregnation device. Background Art

[0002] In automotive motor manufacturing, the impregnation process for stator windings is a critical step in ensuring motor performance and lifespan. Traditional stator winding impregnation equipment often uses a static impregnation method, immersing the stator directly in a tank of paint, relying on the paint's natural penetration to fill the winding gaps. This method has significant drawbacks: First, during the impregnation process, air trapped in the winding gaps is difficult to expel, resulting in residual bubbles and severely affecting the paint's ability to fill the deep winding gaps. Second, static impregnation is time-consuming and inefficient, and the paint tends to accumulate in localized areas of the stator, resulting in uneven impregnation and numerous blind spots. This makes it difficult to meet the stringent stator impregnation quality requirements of automotive motors. Summary of the Invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a motor stator winding impregnation device, which increases the paint liquid pressure, promotes the flow of paint liquid, makes it easier to discharge the air in the winding, and allows for more complete paint impregnation.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a motor stator winding impregnation device, comprising: An elastic tank, wherein the upper and lower ends of the elastic tank are fixed in the housing, the elastic tank has an outer convex portion, the elastic tank is filled with paint liquid, and the top of the housing is provided with an annular opening fixedly connected to the tank opening of the elastic tank; The extrusion mechanism is arranged in the housing and includes a plurality of extrusion units for extruding the outer convex portion; A sealing cover, the sealing cover is used to seal the annular opening, and a suspension mechanism for suspending the stator is provided at the bottom of the sealing cover; When the stator is placed in the paint liquid by the suspension mechanism, the sealing cover seals the annular opening, and the plurality of extrusion units cooperate to press the outer convex portion, so that the paint liquid impacts the winding on the stator.

[0005] Preferably, the elastic can has two outer protrusions, which are annular and located between the can mouth and the can bottom of the elastic can.

[0006] Preferably, the plurality of extrusion units are divided into an upper extrusion group and a lower extrusion group, which are used to extrude the upper and lower outer convex parts respectively, and the upper extrusion group and the lower extrusion group are symmetrically distributed up and down.

[0007] Preferably, the extrusion unit comprises: a telescopic push rod, wherein the fixed end of the telescopic push rod is arranged in the housing, and the movable end of the telescopic push rod is fixed with a connecting rod passing through the side wall of the elastic tank; A propulsion pad is arranged outside the elastic tank and fixedly connected to the connecting rod. The propulsion pad is arc-shaped and has an outward-expanding transition side plate on its edge. A pull-back pad is arranged inside the elastic tank and fixedly connected to the connecting rod; The pushing pad and the pulling pad cooperate to clamp the wall of the elastic tank, so that the connection between the connecting rod and the elastic tank is sealed.

[0008] Preferably, the plurality of extrusion units in the upper extrusion group are evenly distributed around the outer convex portion; and the telescopic push rods in the extrusion units in the upper extrusion group are arranged obliquely. Preferably, the suspension mechanism comprises: A longitudinal rod, the top of which is fixed to the bottom of the sealing cover; a clamping basket, hinged to the bottom of the longitudinal rod, for holding the stator; Wherein, at least one connecting rod in the extrusion unit is provided with an extension portion, and when the extension portion moves along the axial direction of the connecting rod, the extension portion pushes the clamping basket to rotate a certain angle with the hinge axis between the clamping basket and the longitudinal rod as the center.

[0009] Preferably, the clamping basket comprises: an upper frame, on which a disc body cooperating with the extension portion is fixed; A lower frame, the lower frame being hinged to the upper frame, and the upper frame being fixed to the lower frame by a lock; Wherein, both the upper frame and the lower frame are provided with limiting grooves that cooperate with the edges of the outer walls of the stator.

[0010] Preferably, a sealing ring for sealing the sealing cover and the annular opening is sleeved on the sealing cover, and the sealing cover and the outer wall of the annular opening are fixed by a buckle.

[0011] Preferably, a limiting ring is sleeved on the elastic tank between the two outer protrusions, and the limiting ring is fixed in the casing.

[0012] Preferably, the sealing cover is provided with an exhaust pipe, one end of the exhaust pipe is communicated with the inner cavity of the elastic can, and the other end is connected to a vacuum pumping device, and a valve is provided on the exhaust pipe.

[0013] The beneficial effects of the present invention are: The present invention sets an elastic tank in the casing, and the sealing cover can seal the top of the elastic tank. The extrusion mechanism squeezes the outer convex part of the elastic tank inward to increase the paint liquid pressure in the tank, squeeze the paint liquid into the winding gap, and promote the discharge of air in the gap. Under the repeated squeezing of multiple squeezing units, the outer convex part can make the paint liquid in the tank produce a directional impact force, actively impact the stator winding gap, thereby flushing out the bubbles in the winding gap. Compared with traditional static dipping, the dynamic impact of the present invention can significantly shorten the dipping time, increase the filling rate of the paint liquid to the deep gap of the winding, and improve the stator dipping effect of the automobile motor; symmetrical distribution up and down The extrusion units act alternately on the two annular outer protrusions of the elastic tank, causing the paint liquid to move in the vertical direction, avoiding paint liquid retention caused by single-direction extrusion. Multiple extrusion units cooperate with each other to realize multi-directional movement of the paint liquid, ensuring that all parts of the stator winding are impacted and reducing the blind area of ​​immersion; the extension of the connecting rod in the extrusion unit can push the clamping basket to rotate around the hinge axis, so that the stator tilts during the impregnation process, which can eliminate the blind area of ​​paint liquid flow caused by static suspension of the stator (such as the bottom winding is difficult to penetrate due to bubble accumulation). At the same time, through dynamic posture adjustment, the paint liquid is assisted to flush the winding from different angles, thereby improving the consistency of impregnation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A three-dimensional diagram of the overall structure of a motor stator winding impregnation device provided by an embodiment of the present invention.

[0016] Figure 2 A top view of the overall structure of a motor stator winding impregnation device provided by an embodiment of the present invention.

[0017] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0018] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0019] Figure 5 for Figure 3 A partial enlarged view of point B in the middle.

[0020] Figure 6 This is a schematic diagram of the extending portion of the present invention pushing the clamping basket into a tilted state.

[0021] Figure 7A three-dimensional diagram of a motor stator winding impregnation device provided by an embodiment of the present invention with part of the casing removed.

[0022] Figure 8 A three-dimensional diagram of a sealing cover and a suspension mechanism in a motor stator winding impregnation device provided in an embodiment of the present invention.

[0023] Figure 9 A front view of an elastic pot in a motor stator winding impregnation device provided by an embodiment of the present invention.

[0024] Description of reference numerals: 1. Elastic tank, 2. Casing, 3. Outer protrusion, 4. Annular mouth, 5. Extrusion unit, 51. Telescopic push rod, 52. Connecting rod, 53. Push pad, 54. Transition side plate, 55. Pull back pad, 56. Extension, 6. Sealing cover, 7. Longitudinal rod, 8. Clamping basket, 81. Upper frame, 82. Lower frame, 83. Disc, 84. Limiting groove, 9. Sealing ring, 10. Buckle, 11. Limiting ring, 12. Exhaust pipe, 13. Valve, 14. Stator. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1: like Figures 1 to 9 As shown, the first embodiment of the present invention provides a device for impregnating the stator 14 winding of a motor, which realizes effective impregnation of the stator 14 winding through the cooperation of the elastic pot 1, the extrusion mechanism, the sealing cover 6 and the suspension mechanism.

[0027] like Figure 3 As shown, the elastic can 1 is cylindrical with a variable diameter. A ring-shaped opening 4 is fixed to the top of the housing 2. This ring-shaped opening 4 is glued to the opening of the elastic can 1, ensuring a tight and stable connection. A funnel-shaped bottom is provided within the housing 2, and the bottom of the elastic can 1 is securely fixed to the bottom with sealant. This ensures that both the top and bottom of the elastic can 1 are securely connected to the housing 2, ensuring the stable position of the elastic can 1 during the extrusion process.

[0028] In this embodiment, two external protrusions 3 are provided between the upper and lower ends of the elastic pot 1. These external protrusions 3 are annular and have a diameter larger than the upper and lower ends of the elastic pot 1. This creates an outwardly protruding structure at these two locations, providing space for deformation. The elastic pot 1 is filled with lacquer liquid for impregnating the stator 14 windings.

[0029] The sealing cover 6 is used to seal the annular opening 4. Figure 3 and Figure 8 As shown, a sealing ring 9 is mounted on the sealing cover 6. When the sealing cover 6 is placed over the annular opening 4, the sealing ring 9 seals the gap between the sealing cover 6 and the annular opening 4, ensuring a tight seal within the can. The sealing cover 6 is secured to the outer wall of the annular opening 4 by a buckle 10, which facilitates installation and removal of the sealing cover 6 from the annular opening 4. When the sealing cover 6 is secured to the annular opening 4, the sealing cover 6, the housing 2, and the elastic can 1 form a sealed container.

[0030] A limiting ring 11 is provided on the elastic tank 1 between the two outer protrusions 3. The limiting ring 11 is fixed in the casing 2 through a bracket, which plays a certain limiting role in the deformation of the elastic tank 1, thereby preventing the other outer protrusion 3 from being significantly deformed when the extrusion mechanism squeezes one of the outer protrusions 3, thereby improving the stability and reliability of the device.

[0031] like Figure 3 and Figure 8 As shown, a suspension mechanism for placing the motor stator 14 is fixed to the bottom of the sealing cover 6. When the sealing cover 6 is fixed on the annular opening 4, the suspension mechanism can place the motor stator 14 in the paint solution of the elastic can 1 for immersion.

[0032] The extrusion mechanism is arranged inside the housing 2 and includes eight extrusion units 5. The eight extrusion units 5 are divided into an upper extrusion group and a lower extrusion group, which are used to squeeze the upper and lower convex parts 3 of the elastic can 1 respectively. Each group has four extrusion units 5, and the upper and lower extrusion groups are symmetrically distributed up and down. The four extrusion units 5 in each group are evenly distributed around the convex part 3. Figure 5 As shown, each extrusion unit 5 includes a telescopic push rod 51, a push pad 53 and a pull-back pad 55. The fixed end of the telescopic push rod 51 is installed in the housing 2 through a structure such as a bracket, and its movable end is fixed with a connecting rod 52, which passes through the side wall of the elastic tank 1. In order to ensure the sealing of the connection, the push pad 53 is arranged on the outside of the elastic tank 1 and is fixedly connected to the connecting rod 52. The push pad 53 is arc-shaped and can better fit the outer protrusion 3 of the elastic tank 1. The edge of the push pad 53 is provided with an outward-flashing transition side plate 54, which makes the extrusion process smoother and reduces damage to the elastic tank 1; the pull-back pad 55 is arranged on the inside of the elastic tank 1 and is fixedly connected to the connecting rod 52. The push pad 53 and the pull-back pad 55 cooperate to clamp the tank wall of the elastic tank 1, so that a good seal is formed at the connection between the connecting rod 52 and the elastic tank 1 to prevent the paint liquid from leaking.

[0033] When the stator 14 needs to be impregnated, the stator 14 is placed in the clamping basket 8 and the annular opening 4 is sealed by the sealing cover 6. At this time, the stator 14 is suspended in the paint liquid in the elastic can 1. When the upper and lower extrusion groups alternately act on the two annular outer protrusions 3 of the elastic can 1, the upper extrusion group squeezes the upper outer protrusion 3, causing the paint liquid to move downward, and the lower extrusion group squeezes the lower outer protrusion 3, causing the paint liquid to move upward. In this way, the paint liquid continuously moves in the vertical direction, avoiding the paint liquid retention phenomenon caused by unidirectional extrusion. The alternating extrusion of multiple extrusion units 5 in the same extrusion group can promote the lateral movement of the paint liquid. Through the mutual cooperation of multiple extrusion units 5, multi-directional movement of the paint liquid can be achieved, ensuring that all parts of the stator 14 winding are impacted by the paint liquid, reducing the impregnation blind area, and improving the uniformity and effect of the impregnation. At the same time, multiple telescopic push rods 51 push the propulsion pad 53 to press the outer protrusion 3, causing the elastic tank 1 to deform, which can increase the pressure of the paint liquid in the tank, and the paint liquid is squeezed into the winding gap, prompting the air in the gap to be discharged.

[0034] In summary, compared with traditional static dipping, the present invention significantly shortens the dipping time and improves the filling rate of the paint liquid into the deep gaps of the winding.

[0035] Example 2: This embodiment further improves the suspension mechanism based on the first embodiment.

[0036] like Figures 3 to 8 As shown, the suspension mechanism includes a longitudinal rod 7 and a clamping basket 8. The top of the longitudinal rod 7 is bolted to the bottom of the sealing cover 6. The clamping basket 8 includes an upper frame 81 and a lower frame 82. The upper frame 81 is hinged to the bottom of the longitudinal rod 7 via a bracket. A disk 83 is fixed to both sides of the upper frame 81. The lower frame 82 is hinged to the upper frame 81 and can be fixed to the lower frame 82 via a lock, which facilitates the placement and removal of the stator 14. To limit the position of the stator 14, the upper frame 81 and the lower frame 82 are each provided with a retaining groove 84 that mates with the outer edge of the stator 14. When the upper frame 81 and the lower frame 82 cover the stator 14, they can accurately limit the axial movement of the stator 14, preventing it from escaping from the clamping basket 8 during the impregnation process.

[0037] like Figure 6 As shown, the connecting rod 52 in at least one extrusion unit 5 is provided with an extension 56, and in this embodiment, the ends of the connecting rods 52 in the two opposite extrusion units 5 in the upper extrusion group are both provided with extensions 56 that cooperate with the disc 83. In addition, the telescopic push rods 51 in the extrusion units 5 in the upper extrusion group are arranged at an angle. Since the lower extrusion group is symmetrical with the upper extrusion group, the telescopic push rods 51 in the lower extrusion group are also inclined. In addition, because the four extrusion units 5 in the upper extrusion group are evenly distributed circumferentially on the side of the elastic can 1, as shown in FIG. Figure 3As shown, the axis of the telescopic push rod 51 in the lower extrusion group is parallel or colinear with the axis of one of the telescopic push rods 51 in the upper extrusion group.

[0038] As the extension 56 moves axially along the connecting rod 52, it pushes the disc 83 of the clamping basket 8, causing it to rotate a certain angle about the hinge axis with the longitudinal rod 7. This causes the stator 14 to change angle during the impregnation process, transitioning from a horizontal position to an inclined position. When the two parallel telescopic push rods 51 in the upper and lower extrusion groups alternately squeeze the outer protrusion 3, the paint liquid is tilted and flushes the tilted stator 14, making it easier to flush out bubbles in the windings and facilitating gas discharge. As the distance the extension 56 moves changes, the stator 14's tilt angle also changes, thereby altering the angle at which the paint liquid flushes the stator 14.

[0039] This dynamic posture adjustment eliminates paint flow blind spots caused by the static suspension of stator 14, such as the difficulty of impregnating the middle winding due to bubble accumulation. By tilting stator 14, the paint can flow through the windings from different angles, helping the paint to better penetrate the winding gaps and improving impregnation consistency.

[0040] Example 3: In addition to Examples 1 and 2, the sealing cover 6 is further provided with an exhaust pipe 12. One end of the exhaust pipe 12 communicates with the inner cavity of the elastic can 1, and the other end is connected to a vacuum pump. The exhaust pipe 12 is fixedly connected to the sealing cover 6, and the connection is sealed. A valve 13 is provided on the exhaust pipe 12. This allows the vacuum pump to evacuate the air inside the can before impregnation, creating a certain vacuum environment and further improving the impregnation effect. Valve 13 is then closed to maintain the vacuum state inside the can, and the extrusion mechanism is activated to further squeeze the paint liquid, increasing the paint liquid pressure, promoting paint liquid flow, and improving the paint impregnation effect.

[0041] During actual use, the stator 14 is first placed between the upper frame 81 and the lower frame 82 of the clamping basket 8, which are then secured with a lock. The stator 14 is then placed in the paint solution, and the sealing cover 6 is secured to the annular opening 4 with a buckle 10. The vacuum pump is activated, the air in the tank is extracted through the exhaust pipe 12, and the valve 13 is closed. Next, the extrusion unit 5 of the extrusion mechanism begins operating, with the upper and lower extrusion groups squeezing the outer protrusion 3, causing the paint solution in the elastic tank 1 to flow and increase the paint pressure. Simultaneously, the extension 56 pushes the clamping basket 8 to rotate, causing the angle of the stator 14 to change repeatedly. Under the extrusion action, the paint solution impacts the stator 14 windings, facilitating the expulsion of air from the winding gaps, allowing the paint solution to fully fill the gaps and complete the impregnation of the stator 14.

[0042] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A motor stator winding impregnation device, characterized in that: include: An elastic tank, wherein the upper and lower ends of the elastic tank are fixed in the housing, the elastic tank has an outer convex portion, the elastic tank is filled with paint liquid, and the top of the housing is provided with an annular opening fixedly connected to the tank opening of the elastic tank; The extrusion mechanism is arranged in the housing and includes a plurality of extrusion units for extruding the outer convex portion; A sealing cover, the sealing cover is used to seal the annular opening, and a suspension mechanism for suspending the stator is provided at the bottom of the sealing cover; When the stator is placed in the paint liquid by the suspension mechanism, the sealing cover seals the annular opening, and the plurality of extrusion units cooperate to press the outer convex portion, so that the paint liquid impacts the winding on the stator.

2. The motor stator winding impregnation device according to claim 1, characterized in that: The elastic can has two outer protrusions, which are annular and located between the can mouth and the can bottom of the elastic can.

3. The motor stator winding impregnation device according to claim 2, characterized in that: The plurality of extrusion units are divided into an upper extrusion group and a lower extrusion group, which are used for extruding the upper and lower outer convex parts respectively, and the upper extrusion group and the lower extrusion group are symmetrically distributed up and down.

4. The motor stator winding impregnation device according to claim 3, characterized in that: The extrusion unit comprises: A telescopic push rod, wherein the fixed end of the telescopic push rod is arranged in the housing, and the movable end of the telescopic push rod is fixed with a connecting rod passing through the side wall of the elastic tank; A propulsion pad is arranged outside the elastic tank and fixedly connected to the connecting rod. The propulsion pad is arc-shaped and has an outward-expanding transition side plate on its edge. A pull-back pad is arranged inside the elastic tank and fixedly connected to the connecting rod; The pushing pad and the pulling pad cooperate to clamp the wall of the elastic tank, so that the connection between the connecting rod and the elastic tank is sealed.

5. The motor stator winding impregnation device according to claim 4, characterized in that: The plurality of extrusion units in the upper extrusion group are evenly distributed around the outer convex portion; and the telescopic push rods in the extrusion units in the upper extrusion group are arranged obliquely.

6. The motor stator winding impregnation device according to claim 5, characterized in that: The suspension mechanism comprises: A longitudinal rod, the top of which is fixed to the bottom of the sealing cover; a clamping basket, hinged to the bottom of the longitudinal rod, for holding the stator; Wherein, at least one connecting rod in the extrusion unit is provided with an extension portion, and when the extension portion moves along the axial direction of the connecting rod, the extension portion pushes the clamping basket to rotate a certain angle with the hinge axis between the clamping basket and the longitudinal rod as the center.

7. The motor stator winding impregnation device according to claim 6, characterized in that: The clamping basket comprises: an upper frame, on which a disc body cooperating with the extension portion is fixed; A lower frame, the lower frame being hinged to the upper frame, and the upper frame being fixed to the lower frame by a lock; Wherein, both the upper frame and the lower frame are provided with limiting grooves that cooperate with the edges of the outer walls of the stator.

8. The motor stator winding impregnation device according to claim 1, characterized in that: The sealing cover is sleeved with a sealing ring for sealing the sealing cover and the annular opening, and the sealing cover and the outer wall of the annular opening are fixed by a buckle.

9. The motor stator winding impregnation device according to claim 1, characterized in that: A limiting ring is sleeved on the elastic tank between the two outer protrusions, and the limiting ring is fixed in the casing.

10. The motor stator winding impregnation device according to claim 1, characterized in that: The sealing cover is provided with an exhaust pipe, one end of the exhaust pipe is communicated with the inner cavity of the elastic tank, and the other end is connected to a vacuum pumping device, and a valve is provided on the exhaust pipe.

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