A stator winding impregnation production system and method

Abstract

The application discloses a stator winding impregnation production system and method, relates to the technical field of stator winding production equipment, and comprises an impregnation box and a storage box. A pumping device for conveying paint in the impregnation box is arranged outside the impregnation box. The impregnation box is connected with the storage box through the pumping device. A rotating device is arranged on the impregnation box. A paint scraping mechanism is arranged in the storage box. The stator winding is rotated in the impregnation box through the rotating device. The impregnation box is connected with the storage box through the pumping device, the circulation conveying and flowing of the paint in the impregnation box are realized, the flowability of the paint and the impregnation of the stator winding are increased, the efficiency of the stator winding impregnation is improved, after the impregnation, the rotating device rotates to shake off the excess paint of the stator winding, the excess paint on the inner hole surface and the outer circle surface of the stator winding is scraped off through the paint scraping mechanism, and the efficient impregnation treatment of the stator winding is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stator winding production equipment and method, and particularly relates to a stator winding paint dipping production system and method. BACKGROUND

[0002] In the field of motor manufacturing, the paint dipping treatment of the stator winding is a key method, and the purpose is to improve the insulation performance and service life of the motor. Although the traditional paint dipping method can meet the basic requirements, there are still certain limitations in efficient and uniform paint dipping and subsequent paint film treatment, and therefore, it is particularly important to continuously explore more effective paint dipping systems and technical solutions.

[0003] At present, the equipment commonly used in the stator winding paint dipping process includes a single paint dipping tank. In order to ensure the paint dipping quality, the stator winding needs to be immersed in the paint for a long time, and the stator winding after immersion also needs to be dripped with paint for a long time above the paint dipping tank. This production method is time-consuming and low in efficiency, and especially in batch production, the production efficiency of the stator winding paint dipping cannot meet the needs of production.

[0004] Therefore, in batch production, how to improve the production efficiency of the stator winding paint dipping is a technical problem to be solved by the person skilled in the art at present. SUMMARY

[0005] In order to help improve the production efficiency of the stator winding paint dipping, the present application provides a stator winding paint dipping production system and method.

[0006] In a first aspect, the present application provides a stator winding paint dipping production system, which adopts the following technical scheme:

[0007] A stator winding paint dipping production system, comprising a paint dipping tank for paint dipping of the stator winding, a storage tank arranged side by side with the paint dipping tank and used for temporarily storing paint in the paint dipping tank, a pumping device arranged outside the paint dipping tank and used for conveying paint in the paint dipping tank, the paint dipping tank and the storage tank being connected through the pumping device, a rotating device installed on the paint dipping tank and used for rotating the stator winding, and a paint scraping mechanism arranged in the storage tank and used for scraping paint from the inner hole surface and the outer circle surface of the stator winding.

[0008] By adopting the technical scheme, when the stator winding is immersed in paint, the rotating device is used to rotate the stator winding in the paint immersion tank, the paint immersion tank and the storage tank are connected through the pumping device, the paint in the paint immersion tank is circulated and flows, the flowability and the permeability of the paint to the stator winding are increased, the efficiency of the stator winding immersion is improved, after the immersion, the pumping device pumps the paint in the paint immersion tank to the storage tank, the rotating device shakes off the excess paint of the stator winding, the excess paint on the inner hole surface and the outer circle surface of the stator winding is scraped through the paint scraping mechanism, and the efficient immersion treatment of the stator winding is realized.

[0009] Optionally, the pumping device comprises a paint discharge pipeline connected between the bottom of the paint immersion tank and the bottom of the storage tank, a paint inlet pipeline connected between the middle of the paint immersion tank and the middle of the storage tank, and a circulating pump connected between the paint discharge pipeline and the paint inlet pipeline, wherein the paint inlet of the circulating pump is connected with the paint discharge pipeline, the paint outlet of the circulating pump is connected with the paint inlet pipeline, and the paint discharge pipeline and the paint inlet pipeline are provided with a control valve group for controlling the flow direction of the paint.

[0010] By adopting the technical scheme, when the stator winding is immersed in paint, the rotating device is used to rotate the stator winding in the paint immersion tank, the paint immersion tank and the storage tank are connected through the pumping device, the paint in the paint immersion tank is circulated and flows, the flowability and the permeability of the paint to the stator winding are increased, the efficiency of the stator winding immersion is improved, after the immersion, the pumping device pumps the paint in the paint immersion tank to the storage tank, the rotating device shakes off the excess paint of the stator winding, the excess paint on the inner hole surface and the outer circle surface of the stator winding is scraped through the paint scraping mechanism, and the efficient immersion treatment of the stator winding is realized.

[0011] Optionally, the rotating device comprises a clamping disc for clamping the stator winding in the paint immersion tank, a rotating motor for driving the clamping disc to rotate, and a driving shaft coaxially arranged on the clamping disc, wherein the driving shaft is rotationally connected with the paint immersion tank, and the end of the driving shaft away from the clamping disc extends out of the paint immersion tank and is transmissionally connected with the rotating motor.

[0012] By adopting the technical scheme, the rotating device clamps the stator winding through the clamping disc, and drives the driving shaft to rotate through the rotating motor, so as to drive the clamping disc and the stator winding to rotate, when the stator winding is immersed in paint, the rotating motor drives the stator winding to rotate at an immersion speed, the flowability and the permeability of the paint are improved, when the stator winding is shaken, the rotating motor drives the stator winding to rotate at a paint shaking speed, so as to remove the excess paint of the stator winding, and the efficiency of the paint immersion and removal is improved.

[0013] Optionally, the paint scraping mechanism comprises a mounting frame fixedly connected with the inner wall of the storage box, an outer scraping ring and an inner scraping head fixedly mounted on the mounting frame, the outer scraping ring is coaxially arranged with the inner scraping head, the outer scraping ring is provided with a first elastic paint scraping piece for scraping the outer circumferential surface of the stator winding, and the inner scraping head is provided with a second elastic paint scraping piece for scraping the inner hole surface of the stator winding.

[0014] By adopting the above technical scheme, the paint scraping mechanism is installed with the outer scraping ring and the inner scraping head through the mounting frame, the outer scraping ring supports the first elastic paint scraping piece, and the inner scraping head supports the second elastic paint scraping piece; when the stator winding is inserted into the outer scraping ring and the inner scraping head, the first elastic paint scraping piece abuts against the outer circumferential surface of the stator winding, and the second elastic paint scraping piece abuts against the inner hole surface of the stator winding, so as to scrape the inner and outer surfaces of the stator winding and remove the excess paint, the excess paint flows into the storage box for recycling, the paint scraping efficiency is improved, and the production cost is reduced.

[0015] Optionally, the production system further comprises a pre-baking device for baking the stator winding to be dipped in paint, and a continuous baking device for continuously baking the stator winding dipped in paint, the pre-baking device and the continuous baking device are arranged in parallel, and the discharge end of the pre-baking device is sequentially arranged with the paint dipping box and the storage box, and the feeding end of the continuous baking device is arranged opposite to the storage box.

[0016] By adopting the above technical scheme, the pre-baking device can realize continuous pre-baking of multiple stator windings to be dipped in paint, and the continuous baking device can realize continuous baking of multiple stator windings dipped in paint, thereby improving the baking efficiency of the stator winding and facilitating batch production of the stator winding dipped in paint; the pre-baking device and the continuous baking device are arranged in parallel, the discharge end of the pre-baking device is sequentially arranged with the paint dipping box and the storage box, and the feeding end of the continuous baking device is arranged opposite to the storage box, which is beneficial to shorten the distance of the stator winding circulating between the devices and improve the efficiency of the stator winding circulation.

[0017] Optionally, the pre-baking device comprises a pre-baking frame, a first conveyor mounted on the pre-baking frame and used for conveying the stator winding, and a first heat preservation cover mounted on the pre-baking frame, the first heat preservation cover is provided with a first feeding port and a first discharging port, two ends of the first conveyor respectively extend out of the first feeding port and the first discharging port, the first heat preservation cover is provided with a first heater on the side close to the first feeding port, and the first heat preservation cover is provided with a cooling fan on the side close to the first discharging port.

[0018] By adopting the above technical scheme, the pre-baking device is provided with the first conveying machine and the first heat preservation cover installed on the pre-baking frame, the stator winding is conveyed by the first conveying machine, the stator winding is heated by the first heater on the first heat preservation cover, and the stator winding is cooled by the cooling fan, which is helpful to realize continuous batch production of pre-heating of the stator winding.

[0019] Optionally, the continuous baking device comprises a continuous baking frame, a second conveying machine for conveying the stator winding is installed on the continuous baking frame, and a second heat preservation cover is installed on the continuous baking frame, wherein the second heat preservation cover is provided with a second feeding port and a second discharging port, two ends of the second conveying machine respectively extend out of the second feeding port and the second discharging port, and a plurality of second heaters are arranged on the second heat preservation cover along the direction of the second conveying machine.

[0020] By adopting the above technical scheme, the continuous baking device is provided with the second conveying machine and the second heat preservation cover installed on the continuous baking frame, the stator winding after being dipped in paint is conveyed by the second conveying machine, and the stator winding is baked and heated by the second heater on the second heat preservation cover, which is helpful to realize continuous batch production of baking and heating of the stator winding.

[0021] Optionally, the production system further comprises a robot clamping device for clamping and transferring the stator winding, wherein the robot clamping device comprises an industrial robot and a clamping manipulator, and the clamping manipulator is fixedly installed on the free end of the end mechanical arm of the industrial robot.

[0022] By adopting the above technical scheme, the robot clamping device clamps the stator winding by the clamping manipulator, and the stator winding is quickly circulated between the pre-baking device, the paint dipping box, the storage box and the continuous baking device through the rotating action of the industrial robot, so that the transfer efficiency of the stator winding between the devices is improved.

[0023] Optionally, the clamping manipulator comprises a pneumatic chuck, the pneumatic chuck is coaxially arranged with the end mechanical arm of the industrial robot, the pneumatic chuck comprises a disc body, a clamping claw for clamping the stator winding is installed on the disc body, and the pneumatic chuck is connected with a power gas source.

[0024] By adopting the above technical scheme, the pneumatic chuck is coaxially arranged with the end mechanical arm of the industrial robot, so that the pneumatic chuck can rotate coaxially with the end mechanical arm of the industrial robot, thereby driving the stator winding to rotate together with the pneumatic chuck, and the stator winding can rotate simultaneously when being inserted into the paint scraping mechanism, which can help to improve the paint scraping effect of the first elastic paint scraping member and the second elastic paint scraping member on the inner and outer surfaces of the stator winding.

[0025] In the second aspect, the application provides a stator winding paint dipping production method, which adopts the following technical scheme:

[0026] A stator winding impregnation production method applied to the stator winding impregnation production system, comprising the following steps:

[0027] S1. Pre-drying the stator winding to be impregnated, baking to a first preset temperature, and then cooling to a second preset temperature;

[0028] S2. Place the stator winding pre-dried to the second preset temperature into the impregnation tank, deliver paint into the impregnation tank and cover the stator winding, rotate the stator winding at a first preset speed, and at the same time, circulate the paint in the impregnation tank and continue for a first preset time;

[0029] S3. Empty the paint in the impregnation tank, rotate the stator winding at a second preset speed for a second preset time, and spin off the excess paint on the stator winding;

[0030] S4. Insert the impregnated stator winding into the paint scraping mechanism, move axially along the stator winding and rotate around the stator axis to scrape paint, and scrape the inner hole surface and outer circular surface of the stator winding;

[0031] S5. Dry the scraped stator winding, bake the stator winding to a third preset temperature for a third preset time;

[0032] In step S1, a plurality of stator windings to be impregnated are continuously pre-dried, and in step S5, a plurality of scraped stator windings are continuously dried.

[0033] By adopting the above technical scheme and the above steps, continuous pre-drying of a plurality of stator windings to be impregnated can be achieved. During stator winding impregnation, the stator winding and paint are rotated to improve impregnation efficiency. The excess paint on the stator winding is spun off by emptying the paint and rotating the stator. The stator winding is inserted into the paint scraping mechanism, and the stator winding is moved axially and rotated around the stator axis to scrape paint, thereby improving the scraping efficiency. Drying a plurality of scraped stator windings helps to realize batch, continuous and automated production of stator winding impregnation.

[0034] In summary, the present application has at least one of the following beneficial technical effects:

[0035] 1. When the stator winding is immersed in paint, the stator winding is rotated to circulate the paint in the paint tank, increase the flowability of the paint and the permeability of the stator winding, improve the efficiency of the stator winding immersion, and after immersion, the paint in the paint tank is emptied, the stator winding is rotated to shake off the excess paint on the stator winding, the excess paint on the inner hole surface and the outer circular surface of the stator winding is scraped off by the paint scraping mechanism, and the efficient immersion of the stator winding is realized.

[0036] 2. The pumping device can circulate the paint for the stator winding immersion, increase the flowability of the paint and the permeability of the stator winding, empty the paint in the paint tank, shake off the excess paint on the stator winding, and improve the efficiency of the stator winding immersion and removal of excess paint.

[0037] 3. The rotating device drives the stator winding to rotate, when the stator winding is immersed in paint, the rotating motor drives the stator winding to rotate at the immersion speed, which improves the flowability of the paint and the permeability, when the stator winding is shaken, the rotating motor drives the stator winding to rotate at the paint shaking speed, thereby realizing the removal of the excess paint on the stator winding, and improving the efficiency of the immersion and paint removal.

[0038] 4. The paint scraping mechanism is in abutment with the outer circular surface of the stator winding through the first elastic paint scraping part, and the second elastic paint scraping part is in abutment with the inner hole surface of the stator winding, thereby scraping the paint on the inner and outer surfaces of the stator winding, removing the excess paint, and flowing the excess paint into the storage tank for recycling, which improves the efficiency of the paint scraping and reduces the production cost.

[0039] 5. The pre-baking device and the continuous baking device are arranged in parallel, the discharge end of the pre-baking device is sequentially arranged with the paint tank and the storage tank, and the feeding end of the continuous baking device is arranged opposite to the storage tank, which is beneficial to shorten the distance of the stator winding between the devices and improve the efficiency of the stator winding.

[0040] 6. The robot clamping device clamps the stator winding through the clamping manipulator, and through the rotary action of the industrial robot, the stator winding is quickly circulated between the pre-baking device, the paint tank, the storage tank and the continuous baking device, which improves the transfer efficiency of the stator winding between the devices and greatly reduces the labor intensity of workers.

[0041] 7. The continuous baking device is provided with a second conveyor and a second heat preservation cover through a continuous baking frame, the stator winding immersed in paint is conveyed through the second conveyor, and the stator winding is baked by the second heater on the second heat preservation cover, which is helpful to realize the continuous batch production of the stator winding baking. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structure diagram of a stator winding immersion production system.

[0043] Figure 2 This is a cross-sectional view of the paint dipping box and storage box disclosed in this application assembled together.

[0044] Figure 3 for Figure 2 A partial enlarged view of the middle I position.

[0045] Figure 4 for Figure 2 A partial enlarged view of position II.

[0046] Figure 5 This is a schematic structural diagram of the pre-baking device disclosed in this application.

[0047] Figure 6 This is a cross-sectional view of the pre-baking device disclosed in this application.

[0048] Figure 7 This is a cross-sectional view of the continuous baking device disclosed in this application.

[0049] Figure 8 This is a schematic structural diagram of the robot clamping device disclosed in this application.

[0050] Description of reference numerals:

[0051] 1. Dipping box; 2. Storage box; 3. Pumping device; 31. Paint discharge pipe; 32. Paint supply pipe; 33. Circulating pump; 34. Control valve group; 341. First control valve; 342. Second control valve; 343. Third control valve; 344. Fourth control valve; 4. Rotating device; 41. Clamping plate; 42. Rotating motor; 43. Drive shaft; 44. Rotary joint; 5. Paint scraping mechanism; 51. Mounting frame; 52. Outer scraper ring; 521. First elastic paint scraper; 5211. Inner spiral groove; 53. Inner scraper head; 531. Second elastic paint scraper; 5311. Outer spiral groove; 6. Pre-baking device; 61. Pre-baking rack; 62. First conveyor; 63. First heat-insulating cover; 631. First feed port; 632. First discharge port; 633 , first heater; 634, cooling fan; 7, continuous baking device; 71, continuous baking rack; 72, second conveyor; 73, second thermal insulation cover; 731, second feed port; 732, second discharge port; 733, second heater; 8, robot clamping device; 81, industrial robot; 811, end robot arm; 82, clamping robot; 821, pneumatic chuck; 8211, disk body; 8212, clamping claw; 9, stator winding. DETAILED DESCRIPTION

[0052] The following combination Figures 1 to 8 This application is described in further detail.

[0053] The embodiment of the application discloses a stator winding impregnation production system.

[0054] The embodiment of the application discloses a stator winding impregnation production system. Figure 1 and Figure 2 The embodiment of the application discloses a stator winding impregnation production system.

[0055] The embodiment of the application discloses a stator winding impregnation production system. Figure 1 and Figure 2The pumping device 3 comprises a paint discharge conduit 31, a paint inlet conduit 32, a circulating pump 33, and a control valve group 34. The bottom of the paint dipping tank 1 is connected to the bottom of the paint storage tank 2 through the paint discharge conduit 31. The middle of the paint dipping tank 1 is connected to the middle of the paint storage tank 2 through the paint inlet conduit 32. The circulating pump 33 is connected to the paint discharge conduit 31 and the paint inlet conduit 32. The paint discharge conduit 31 and the paint inlet conduit 32 are connected to the control valve group 34. The control valve group 34 comprises a first control valve 341, a second control valve 342, a third control valve 343, and a fourth control valve 344. The first control valve 341 is installed at the end of the paint discharge conduit 31 close to the paint dipping tank 1, and is used to control the discharge of paint in the paint dipping tank 1. The second control valve 342 is installed at the end of the paint inlet conduit 32 close to the paint dipping tank 1, and is used to control the delivery of paint to the paint dipping tank 1. The third control valve 343 is installed at the end of the paint discharge conduit 31 close to the paint storage tank 2, and is used to control the discharge of paint in the paint storage tank 2. The fourth control valve 344 is installed at the end of the paint inlet conduit 32 close to the paint storage tank 2, and is used to control the delivery of paint to the paint storage tank 2. When the stator winding 9 is dipped in the paint dipping tank 1, the circulating pump 33 is started, the first control valve 341 and the second control valve 342 are opened, and the third control valve 343 and the fourth control valve 344 are closed. The paint in the paint dipping tank 1 flows in the paint dipping tank 1 through the paint discharge conduit 31, the circulating pump 33, and the paint inlet conduit 32, so as to increase the flowability of the paint and the impregnation of the stator winding 9. After the stator winding 9 is dipped in the paint, the second control valve 342 is closed, the fourth control valve 344 is opened, and the circulating pump 33 is started. The paint in the paint dipping tank 1 is discharged into the paint storage tank 2 through the circulating pump 33, so as to empty the paint in the paint dipping tank 1. The rotating device 4 drives the stator winding 9 to rotate, so as to shake off the excess paint on the stator winding 9, and improve the efficiency of dipping the stator winding 9 in the paint and removing the excess paint.

[0056] With reference to Figure 2 and Figure 3The rotating device 4 comprises a clamping disc 41, a driving shaft 43 and a rotating motor 42. The clamping disc 41 is arranged inside the paint dipping box 1 for clamping the stator winding 9. The driving shaft 43 is coaxially fixed with the clamping disc 41. The driving shaft 43 is rotatably arranged on the paint dipping box 1 through a bearing. The end surface of the bearing is provided with a sealing element on the mounting hole of the paint dipping box 1 to prevent the paint from leaking. The end of the driving shaft 43, which is away from the clamping disc 41, extends out of the paint dipping box 1 and is in transmission connection with the rotating motor 42. It should be noted that the driving shaft 43 and the output shaft of the rotating motor 42 can be in transmission connection through gears, sprockets or belts. The clamping disc 41 can be a pneumatic chuck or an electric chuck. The end of the driving shaft 43, which extends out of the paint dipping box 1, is provided with an axial through hole extending to the clamping disc 41 and a radial through hole. The axial through hole and the radial through hole are used for penetrating electric wires or power air pipes. After the radial through hole penetrates the electric wires or power air pipes, sealing treatment is performed to prevent the paint from leaking to the outside. A rotary joint 44 is mounted on the end of the driving shaft 43 extending out of the paint dipping box 1. The rotary joint 44 is used for connecting external electric wires or power air pipes. In this way, when the driving shaft 43 rotates, one end of the rotary joint 44 rotates with the driving shaft 43, and the electric wires or power air pipes connected to the other end do not rotate. The rotating motor 42 is fixedly arranged on the outer wall of the paint dipping box 1. The rotating device 4 clamps the stator winding 9 through the clamping disc 41 and drives the driving shaft 43 to rotate through the rotating motor 42, so as to drive the clamping disc 41 and the stator winding 9 to rotate. When the stator winding 9 is dipped in paint, the rotating motor 42 drives the stator winding 9 to rotate at a dipping speed. It should be noted that the dipping speed should not be too high. The dipping speed can only improve the flowability of the paint. The dipping speed and the penetration of the paint are improved. When the stator winding 9 is painted, the rotating motor 42 drives the stator winding 9 to rotate at a painting speed. The painting speed is higher than the dipping speed. The painting speed can remove the excess paint on the stator winding 9. The application does not limit the two speeds. The excess paint on the stator winding 9 is removed, so as to improve the efficiency of dipping and removing paint.

[0057] Reference Figure 3 and Figure 4The paint scraping mechanism 5 comprises a mounting frame 51 fixedly connected with the inner wall of the storage box 2, an outer scraping ring 52 and an inner scraping head 53 fixedly mounted on the mounting frame 51, the outer scraping ring 52 is coaxially arranged with the inner scraping head 53, the outer scraping ring 52 is provided with a first elastic paint scraping part 521 for scraping the outer circumferential surface of the stator winding 9, the inner scraping head 53 is provided with a second elastic paint scraping part 531 for scraping the inner hole surface of the stator winding 9, the first elastic paint scraping part 521 and the second elastic paint scraping part 531 are both made of polyurethane rubber, a plurality of inner helical grooves 5211 are arranged on the inner surface of the first elastic paint scraping part 521 in the axial direction, a plurality of outer helical grooves 5311 are arranged on the outer surface of the second elastic paint scraping part 531 in the axial direction, the paint scraped from the stator winding 9 flows into the inner helical grooves 5211 and the outer helical grooves 5311 and then flows into the storage box 2 through the inner helical grooves 5211 and the outer helical grooves 5311, the paint scraping mechanism 5 mounts the outer scraping ring 52 and the inner scraping head 53 through the mounting frame 51, the outer scraping ring 52 supports the first elastic paint scraping part 521, and the inner scraping head 53 supports the second elastic paint scraping part 531, when the stator winding 9 is inserted into the outer scraping ring 52 and the inner scraping head 53, the first elastic paint scraping part 521 abuts against the outer circumferential surface of the stator winding 9, and the second elastic paint scraping part 531 abuts against the inner hole surface of the stator winding 9, so that the inner and outer surfaces of the stator winding 9 are scraped, and the excess paint is removed and flows into the storage box 2 for recycling, thereby improving the paint scraping efficiency and reducing the production cost.

[0058] With reference to Figure 1 The production system further comprises a pre-baking device 6 and a continuous baking device 7, the pre-baking device 6 is used for baking the stator winding 9 to be dipped in paint, and the continuous baking device 7 is used for continuously baking the stator winding 9 dipped in paint, the pre-baking device 6 and the continuous baking device 7 are arranged in parallel, and the discharge end of the pre-baking device 6 is sequentially arranged with the paint dipping box 1 and the storage box 2, and the feeding end of the continuous baking device 7 is arranged opposite to the storage box 2, through the pre-baking device 6, the continuous pre-baking of a plurality of stator windings 9 to be dipped in paint can be realized, through the continuous baking device 7, the continuous baking of a plurality of stator windings 9 dipped in paint can be realized, the baking efficiency of the stator winding 9 is improved, and the batch production of the stator winding 9 dipped in paint is facilitated, the pre-baking device 6 and the continuous baking device 7 are arranged in parallel, the discharge end of the pre-baking device 6 is sequentially arranged with the paint dipping box 1 and the storage box 2, and the feeding end of the continuous baking device 7 is arranged opposite to the storage box 2, which is beneficial to shorten the distance of the stator winding 9 circulating between the devices and improve the efficiency of the stator winding 9 circulating.

[0059] With reference to Figure 5 and Figure 6The pre-baking device 6 comprises a pre-baking rack 61, a first conveyor 62 and a first heat preservation cover 63. The first conveyor 62 is installed on the pre-baking rack 61 and used for conveying the stator winding 9. The first heat preservation cover 63 is also installed on the pre-baking rack 61 and covers the first conveyor 62. In the embodiment of the application, the first conveyor 62 is a plate chain conveyor. In other embodiments of the application, the first conveyor 62 is a mesh chain conveyor. The first heat preservation cover 63 is provided with a first feeding port 631 and a first discharging port 632. The two ends of the first conveyor 62 respectively extend out of the first feeding port 631 and the first discharging port 632. The first heat preservation cover 63 is provided with a first heater 633 on the side close to the first feeding port 631. The first heat preservation cover 63 is provided with a cooling fan 634 on the side close to the first discharging port 632. The first heater 633 and the cooling fan 634 can be provided in multiple numbers and selected according to the production capacity of the pre-baking device 6. The pre-baking device 6 is provided with the first conveyor 62 and the first heat preservation cover 63 through the pre-baking rack 61. The stator winding 9 is conveyed through the first conveyor 62. The stator winding 9 is heated through the first heater 633 on the first heat preservation cover 63. The stator winding 9 is cooled through the cooling fan 634. This helps to realize continuous batch production of pre-heating of the stator winding 9.

[0060] With reference to Figure 7 The continuous baking device 7 comprises a continuous baking rack 71, a second conveyor 72 and a second heat preservation cover 73. The second conveyor 72 is installed on the continuous baking rack 71 and used for conveying the stator winding 9 that has been dipped in paint. The second heat preservation cover 73 is installed on the continuous baking rack 71 and covers the second conveyor 72. In the embodiment of the application, the second conveyor 72 is a plate chain conveyor. In other embodiments of the application, the second conveyor 72 is a mesh chain conveyor. The second heat preservation cover 73 is provided with a second feeding port 731 and a second discharging port 732. The two ends of the second conveyor 72 respectively extend out of the second feeding port 731 and the second discharging port 732. The second heat preservation cover 73 is provided with a plurality of second heaters 733 along the direction of the second conveyor 72. The continuous baking device 7 is provided with the second conveyor 72 and the second heat preservation cover 73 through the continuous baking rack 71. The stator winding 9 that has been dipped in paint is conveyed through the second conveyor 72. The stator winding 9 is baked and heated through the second heaters 733 on the second heat preservation cover 73. This helps to realize continuous batch production of baking and heating of the stator winding 9.

[0061] With reference to Figure 8The production system further comprises a robot clamping device 8 for clamping and transferring the stator winding 9, which is arranged at a position between the paint dipping tank 1, the storage tank 2, the pre-baking device 6 and the continuous baking device 7. The robot clamping device 8 comprises an industrial robot 81 and a clamping manipulator 82, which is fixedly installed on the free end of the end mechanical arm 811 of the industrial robot 81. The robot clamping device 8 clamps the stator winding 9 through the clamping manipulator 82, and through the rotating action of the industrial robot 81, the stator winding 9 is quickly circulated between the pre-baking device 6, the paint dipping tank 1, the storage tank 2 and the continuous baking device 7, thereby improving the transfer efficiency of the stator winding 9 between the devices.

[0062] With reference to Figure 8 The clamping manipulator 82 comprises a pneumatic chuck 821, which is coaxially arranged with the end mechanical arm 811 of the industrial robot 81. The pneumatic chuck 821 comprises a disc body 8211 and a clamping jaw 8212, which is installed on the disc body 8211 for clamping the stator winding 9. The pneumatic chuck 821 is connected with a power gas source. The pneumatic chuck 821 is coaxially arranged with the end mechanical arm 811 of the industrial robot 81, so as to rotate with the end mechanical arm 811 of the industrial robot 81, thereby driving the stator winding 9 to rotate with the pneumatic chuck 821. When the stator winding 9 is inserted into the paint scraping mechanism 5, it is simultaneously rotated, which can help to improve the paint scraping effect of the first and second elastic paint scraping members 521 and 531 on the inner and outer surfaces of the stator winding 9.

[0063] The working principle of the stator winding dip paint production system is as follows: the stator winding 9 to be pre-baked is placed on the first conveyor 62 at the first feeding port 631, the first conveyor 62 is started, the first conveyor 62 moves the stator winding 9 in the first heat preservation cover 63, the first heater 633 performs baking heating on the stator winding 9, the stator winding 9 is baked to a first preset temperature, then the cooling fan 634 cools the stator winding 9 to a second preset temperature, the stator winding 9 is moved to the first discharging port 632, the robot clamping device 8 is started, the pneumatic chuck 821 clamps the pre-dried stator winding 9, the industrial robot 81 rotates, the pneumatic chuck 821 places the stator winding 9 on the clamping disc 41 of the rotating device 4, the clamping disc 41 clamps the stator winding 9, the third control valve 343 and the second control valve 342 are opened, the circulating pump 33 is started, the paint in the storage tank 2 is pumped into the dip paint tank 1 and immersed in the stator winding 9, the third control valve 343 is closed, the first control valve 341 is opened, the paint in the dip paint tank 1 is circulated, the rotating motor 42 is started, the stator winding 9 rotates at a dip paint speed, after a dip paint time, the second control valve 342 is closed, the fourth control valve 344 is opened, the paint in the dip paint tank 1 is discharged into the storage tank 2, the rotating motor 42 is adjusted, the stator winding 9 rotates at a paint throwing speed, so that the excess paint on the stator winding 9 is thrown off, the industrial robot 81 rotates, the pneumatic chuck 821 clamps the stator winding 9 and inserts the first elastic paint scraping part 521 and the second elastic paint scraping part 531, and the end mechanical arm 811 rotates to drive the stator winding 9 to rotate, so that the inner hole surface and the outer circle surface of the stator winding 9 are scraped, and the excess paint is scraped off, the pneumatic chuck 821 clamps the stator winding 9 after scraping, the industrial robot 81 rotates, the pneumatic chuck 821 clamps the stator winding 9 to the second conveyor 72 at the second feeding port 731, the second conveyor 72 is started to convey the stator winding 9 into the second heat preservation cover 73, the second heater 733 performs heating and baking on the stator winding 9, the baked stator winding 9 is conveyed to the second discharging port 732, the dip paint and baking production of the stator winding 9 are completed, and the above process is cycled to realize batch, continuous and automatic production of the stator winding 9.

[0064] The application further discloses a stator winding dip paint production method.

[0065] The stator winding dip paint production method is applied to the stator winding dip paint production system and comprises the following steps.

[0066] S1. Pre-drying treatment is performed on the stator winding 9 to be dipped, the stator winding 9 is baked to a first preset temperature, and then cooled to a second preset temperature.

[0067] It should be noted that the first preset temperature and the second preset temperature need to be set according to the insulation grade of the stator winding 9, and the application does not make any limitation.

[0068] S2. Put the stator winding 9 pre-baked to the second preset temperature into the paint dipping box 1, deliver paint into the paint dipping box 1 and cover the stator winding 9, rotate the stator winding 9 at the first preset rotating speed, and circulate the paint in the paint dipping box 1 for the first preset time;

[0069] S3. Empty the paint in the paint dipping box 1, rotate the stator winding 9 at the second preset rotating speed for the second preset time, and spin off the excess paint on the stator winding 9;

[0070] S4. Insert the paint-dipped stator winding 9 into the paint scraping mechanism 5, move axially along the stator winding 9 and rotate around the stator axis to scrape the paint, and scrape the inner hole surface and the outer circle surface of the stator winding 9;

[0071] S5. Dry the paint-scraped stator winding 9, bake the stator winding 9 to the third preset temperature for the third preset time;

[0072] In step S1, a plurality of stator windings 9 to be dipped in paint are continuously pre-baked, and in step S5, a plurality of stator windings 9 after scraping are continuously dried.

[0073] The stator winding dipping production method can realize continuous pre-baking of a plurality of stator windings 9 to be dipped in paint, improve the dipping efficiency by rotating the stator winding 9 and circulating the paint flow, spin off the excess paint on the stator winding 9 by emptying the paint and rotating the stator winding 9, improve the scraping efficiency by inserting the stator winding 9 into the paint scraping mechanism 5, moving axially along the stator winding 9 and rotating around the stator axis to scrape the paint, and scraping the inner hole surface and the outer circle surface of the stator winding 9, and help realize batch, continuous and automatic production of stator winding 9 dipping by drying a plurality of stator windings 9 after scraping.

[0074] The above are preferred embodiments of the present application, and are not sequentially limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A stator winding varnish impregnation production system, characterized by: The production system comprises a dip tank (1) for dipping stator winding (9) in paint, a storage tank (2) arranged in parallel with the dip tank (1) for temporarily storing paint in the dip tank (1), a pumping device (3) arranged outside the dip tank (1) for conveying paint in the dip tank (1), the dip tank (1) and the storage tank (2) being connected by the pumping device (3), a rotating device (4) arranged on the dip tank (1) for rotating the stator winding (9), and a paint scraping mechanism (5) arranged in the storage tank (2) for scraping the inner hole surface and the outer surface of the stator winding (9). The pumping device (3) comprises a paint discharge pipeline (31) connected to the bottom of the dip tank (1) and the bottom of the storage tank (2), a paint inlet pipeline (32) connected to the middle of the dip tank (1) and the middle of the storage tank (2), a circulating pump (33) connected to the paint discharge pipeline (31) and the paint inlet pipeline (32), the paint inlet of the circulating pump (33) being connected to the paint discharge pipeline (31), the paint outlet of the circulating pump (33) being connected to the paint inlet pipeline (32), and the paint discharge pipeline (31) and the paint inlet pipeline (32) being connected to a control valve group (34) for controlling the flow direction of paint. The paint scraping mechanism (5) comprises a mounting frame (51) fixedly connected to the inner wall of the storage tank (2), an outer scraping ring (52) and an inner scraping head (53) fixedly mounted on the mounting frame (51), the outer scraping ring (52) and the inner scraping head (53) being coaxially arranged, the outer scraping ring (52) being provided with a first elastic paint scraping member (521) for scraping the outer circumferential surface of the stator winding (9), and the inner scraping head (53) being provided with a second elastic paint scraping member (531) for scraping the inner hole surface of the stator winding (9).

2. The stator winding varnishing production system according to claim 1, characterized in that: The rotating device (4) comprises a clamping disc (41) for clamping the stator winding (9) arranged in the dip tank (1), a rotating motor (42) for driving the clamping disc (41) to rotate, and a drive shaft (43) coaxially arranged with the clamping disc (41), the drive shaft (43) being rotatably connected to the dip tank (1), and the end of the drive shaft (43) away from the clamping disc (41) extending out of the dip tank (1) and being drivingly connected to the rotating motor (42).

3. A stator winding varnish impregnation production system according to any one of claims 1 to 2, characterized in that: The production system further comprises a pre-baking device (6) for baking the stator winding (9) to be dipped in paint, and a continuous baking device (7) for continuously baking the stator winding (9) after being dipped in paint, the pre-baking device (6) and the continuous baking device (7) being arranged in parallel, the discharge end of the pre-baking device (6) being sequentially arranged with the dip tank (1) and the storage tank (2), and the feeding end of the continuous baking device (7) being arranged opposite to the storage tank (2).

4. The system for stator winding impregnation according to claim 3, characterized in that: The pre-baking device (6) comprises a pre-baking rack (61), a first conveyor (62) for conveying the stator winding (9) installed on the pre-baking rack (61), a first heat preservation cover (63) installed on the pre-baking rack (61), the first heat preservation cover (63) is provided with a first feeding port (631) and a first discharging port (632), both ends of the first conveyor (62) respectively extend out of the first feeding port (631) and the first discharging port (632), and the first heat preservation cover (63) is provided with a first heater (633) on the side close to the first feeding port (631), and the first heat preservation cover (63) is provided with a cooling fan (634) on the side close to the first discharging port (632).

5. The system for stator winding impregnation according to claim 3, wherein: The continuous baking device (7) comprises a continuous baking rack (71), a second conveyor (72) for conveying the stator winding (9) installed on the continuous baking rack (71), and a second heat preservation cover (73) installed on the continuous baking rack (71), the second heat preservation cover (73) is provided with a second feeding port (731) and a second discharging port (732), both ends of the second conveyor (72) respectively extend out of the second feeding port (731) and the second discharging port (732), and a plurality of second heaters (733) are arranged on the second heat preservation cover (73) along the direction of the second conveyor (72).

6. The system for stator winding impregnation according to claim 3, wherein: The production system further comprises a robot clamping device (8) for clamping and transferring the stator winding (9), the robot clamping device (8) comprises an industrial robot (81) and a clamping manipulator (82), and the clamping manipulator (82) is fixedly installed on the free end of the end mechanical arm (811) of the industrial robot (81).

7. A stator winding impregnation production system according to claim 6, wherein: The clamping manipulator (82) comprises a pneumatic chuck (821), the pneumatic chuck (821) is coaxially arranged with the end mechanical arm (811) of the industrial robot (81), the pneumatic chuck (821) comprises a disc body (8211), a clamping claw (8212) for clamping the stator winding (9) is installed on the disc body (8211), and the pneumatic chuck (821) is connected with a power gas source.

8. A method for producing a stator winding impregnation paint, applied to the stator winding impregnation paint production system according to any one of claims 1 to 2 and 4 to 7, characterized by, The method comprises the following steps: S1. Pre-drying treatment is performed on the stator winding (9) to be dipped in paint, the stator winding (9) is baked to a first preset temperature, and then cooled to a second preset temperature; S2. The stator winding (9) pre-dried to the second preset temperature is placed in the paint dipping box (1) for paint dipping, the stator winding (9) is rotated at a first preset speed, meanwhile, the paint in the paint dipping box (1) is circulated and transported for a first preset time; S3. The paint in the paint dipping box (1) is emptied, the stator winding (9) is rotated at a second preset speed for a second preset time, and the excess paint on the stator winding (9) is spun off; S4. The stator winding (9) after paint dipping is inserted into the paint scraping mechanism (5), and the stator winding (9) is moved axially and rotated around the axis of the stator winding (9) for paint scraping, so that the inner hole surface and the outer circle surface of the stator winding (9) are subjected to paint scraping treatment. S5. The stator winding (9) after the paint scraping is subjected to a drying treatment, and the stator winding (9) is baked to a third preset temperature and lasts for a third preset time; In the step S1, a plurality of stator windings (9) to be dipped in paint are subjected to continuous pre-drying treatment, and in the step S5, a plurality of stator windings (9) after the paint scraping are subjected to continuous drying treatment.

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