Stator winding paint dipping production system and method

Abstract

The invention discloses a stator winding paint dipping production system and method, and relates to the technical field of stator winding production equipment.The stator winding paint dipping production system comprises a paint dipping box and a storage box, a pumping device used for conveying paint in the paint dipping box is arranged outside the paint dipping box, the paint dipping box is connected with the storage box through the pumping device, and a rotating device is installed on the paint dipping box; a paint scraping mechanism is arranged in the storage box, the stator winding rotates in the paint dipping box through the rotating device, the paint dipping box is connected with the storage box through the pumping device, circulating conveying and flowing of paint in the paint dipping box are achieved, the fluidity of the paint and the permeability of the paint to the stator winding are improved, and the paint dipping efficiency of the stator winding is improved; the rotating device rotates to throw away redundant paint on the stator winding, the redundant paint on the inner hole surface and the outer circle surface of the stator winding is scraped off through the paint scraping mechanism, and efficient paint dipping treatment on the stator winding is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of stator winding production equipment and methods, and in particular to a stator winding varnishing production system and method. Background Art

[0002] In the field of motor manufacturing, the varnishing treatment of stator windings is a key method, which aims to improve the insulation performance and service life of the motor. Although the traditional varnishing method can meet basic needs, it still has certain limitations in terms of efficient and uniform varnishing and subsequent paint film treatment. Therefore, it is particularly important to continuously explore more effective varnishing systems and technical solutions.

[0003] At present, the equipment commonly used in the stator winding varnishing process includes a single varnishing tank. In order to ensure the quality of varnishing, the stator winding needs to be immersed in the paint for a long time. After immersion, the stator winding also needs to drip paint on the varnishing tank for a long time. This production method is time-consuming and inefficient. Especially in mass production, the production efficiency of stator winding varnishing cannot meet the production needs.

[0004] Therefore, how to improve the production efficiency of stator winding varnish dipping during mass production is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0005] In order to help solve the technical problem of improving the production efficiency of stator winding varnish dipping, the present application provides a stator winding varnish dipping production system and method.

[0006] In a first aspect, the present application provides a stator winding varnishing production system, which adopts the following technical solution: A stator winding varnishing production system comprises a varnishing box for varnishing the stator winding, a storage box arranged side by side with the varnishing box for temporarily storing the paint in the varnishing box, a pumping device for conveying the paint in the varnishing box is arranged outside the varnishing box, the varnishing box is connected to the storage box through the pumping device, a rotating device for rotating the stator winding is installed on the varnishing box, and a paint scraping mechanism for scraping the inner hole surface and the outer cylindrical surface of the stator winding is arranged inside the storage box.

[0007] By adopting the above technical scheme, when the production system is varnishing the stator winding, the stator winding is rotated in the varnish dipping box by the rotating device, and the varnish dipping box is connected to the storage box by the pumping device, so that the circulating conveying flow of the paint in the varnish dipping box is realized, the fluidity of the paint and the permeability to the stator winding are increased, and the efficiency of the stator winding varnish dipping is improved. After varnishing, the pumping device pumps the paint in the varnish dipping box to the storage box, the rotating device rotates to shake off the excess paint of the stator winding, and the excess paint on the inner hole surface and the outer cylindrical surface of the stator winding is scraped off by the paint scraping mechanism, thereby realizing efficient varnishing treatment of the stator winding.

[0008] Optionally, the pumping device includes a paint discharge pipe connected to the bottom of the paint dipping box and the bottom of the storage box, a paint supply pipe connected to the middle of the paint dipping box and the middle of the storage box, a circulating pump connected to the paint discharge pipe and the paint supply pipe, the paint inlet of the circulating pump is connected to the paint discharge pipe, the paint outlet of the circulating pump is connected to the paint supply pipe, and the paint discharge pipe and the paint supply pipe are connected to a control valve group provided with a control valve group for controlling the flow direction of the paint.

[0009] By adopting the above technical solution, when the stator winding is dipped in the paint dipping box, the circulating pump works, and under the control of the control valve group, the paint in the paint dipping box circulates in the paint dipping box through the paint discharge pipe, the circulating pump and the paint inlet pipe, thereby increasing the fluidity of the paint and the permeability to the stator winding. The paint in the paint dipping box is discharged into the storage box through the pumping device, which is convenient for shaking off the excess paint on the stator winding, thereby improving the efficiency of dipping the stator winding in paint and removing the excess paint.

[0010] Optionally, the rotating device includes a clamping plate located inside the paint dipping box for clamping the stator winding, a rotating motor driving the clamping plate to rotate, and a driving shaft coaxially fixed to the clamping plate, the driving shaft being rotationally connected to the paint dipping box, and one end of the driving shaft away from the clamping plate extends out of the paint dipping box and is transmission-connected to the rotating motor.

[0011] By adopting the above technical solution, the rotating device clamps the stator winding through the clamping disk, and drives the driving shaft to rotate through the rotating motor, thereby driving the clamping disk and the stator winding to rotate. When the stator winding is dipped in paint, the rotating motor drives the stator winding to rotate at the paint dipping speed, thereby improving the fluidity and permeability of the paint. When the stator winding is spin-painted, the rotating motor drives the stator winding to rotate at the paint spinning speed, thereby removing excess paint from the stator winding and improving the efficiency of paint dipping and paint removal.

[0012] Optionally, the paint scraping mechanism includes a mounting frame fixedly connected to the inner wall of the storage box, an outer scraper ring and an inner scraper head fixedly mounted on the mounting frame, the outer scraper ring and the inner scraper head are coaxially arranged, the outer scraper ring is provided with a first elastic paint scraper member for scraping paint on the outer circumferential surface of the stator winding, and the inner scraper head is provided with a second elastic paint scraper member for scraping paint on the inner hole surface of the stator winding.

[0013] By adopting the above technical scheme, the paint scraping mechanism installs the outer scraper ring and the inner scraper head through the mounting frame, the outer scraper ring supports the first elastic paint scraper member, and the inner scraper head supports the second elastic paint scraper member. When the stator winding is inserted into the outer scraper ring and the inner scraper head, the first elastic paint scraper member abuts against the outer circumferential surface of the stator winding, and the second elastic paint scraper member abuts against the inner hole surface of the stator winding, thereby scraping the inner and outer surfaces of the stator winding to remove excess paint. The excess paint flows into the storage box for recycling, thereby improving the paint scraping efficiency and reducing production costs.

[0014] Optionally, the production system also includes 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 that has been dipped in paint. The pre-baking device is arranged in parallel with the continuous baking device, and the paint dipping box and the storage box are arranged in sequence at the discharge end of the pre-baking device, and the feed end of the continuous baking device is arranged opposite to the storage box.

[0015] By adopting the above technical scheme, a plurality of stator windings to be dipped in paint can be continuously pre-baked through a pre-baking device, and a plurality of stator windings dipped in paint can be continuously baked through a continuous baking device, thereby improving the baking efficiency of the stator windings and facilitating the batch production of stator winding dipped in paint. The pre-baking device and the continuous baking device are arranged in parallel, and a paint dipping box and a storage box are arranged in sequence at the discharge end of the pre-baking device, and the feed end of the continuous baking device is arranged opposite to the storage box, which is beneficial to shortening the distance of the stator winding's turnover between the devices and improving the efficiency of the stator winding's turnover.

[0016] Optionally, the pre-baking device includes a pre-baking rack, a first conveyor installed on the pre-baking rack for conveying the stator winding, a first thermal insulation cover installed on the pre-baking rack, the first thermal insulation cover is provided with a first feed port and a first discharge port, the two ends of the first conveyor extend out of the first feed port and the first discharge port respectively, a first heater is provided on the side of the first thermal insulation cover close to the first feed port, and a cooling fan is provided on the side of the first thermal insulation cover close to the first discharge port.

[0017] By adopting the above technical solution, the pre-baking device installs the first conveyor and the first thermal insulation cover through the pre-baking rack, conveys the stator winding through the first conveyor, heats the stator winding through the first heater on the first thermal insulation cover, and cools the stator winding through the cooling fan, which helps to achieve continuous batch production of preheating of the stator winding.

[0018] Optionally, the continuous baking device includes a continuous baking rack, a second conveyor installed on the continuous baking rack for conveying the stator winding, a second thermal insulation cover installed on the continuous baking rack, the second thermal insulation cover is provided with a second feed port and a second discharge port, the two ends of the second conveyor extend out of the second feed port and the second discharge port respectively, and the second thermal insulation cover is provided with a plurality of second heaters along the direction of the second conveyor.

[0019] By adopting the above technical solution, the continuous baking device installs the second conveyor and the second insulation cover through the continuous baking rack, conveys the paint-dipped stator winding through the second conveyor, and bakes and heats the stator winding through the second heater on the second insulation cover, which helps to realize continuous batch production of baking and heating of the stator winding.

[0020] Optionally, the production system further comprises a robot clamping device for clamping and transporting the stator winding, wherein the robot clamping device comprises an industrial robot and a clamping manipulator, and the clamping manipulator is fixedly mounted on the free end of the end manipulator arm of the industrial robot.

[0021] By adopting the above technical solution, the robot clamping device clamps the stator winding through the clamping manipulator, and through the rotation action of the industrial robot, the stator winding can be quickly turned over between the pre-baking device, the paint dipping box, the storage box and the continuous baking device, thereby improving the transfer efficiency of the stator winding between the devices.

[0022] Optionally, the clamping robot includes a pneumatic chuck, which is coaxially arranged with the end robot arm of the industrial robot. The pneumatic chuck includes a disc body, a clamping claw mounted on the disc body for clamping the stator winding, and the pneumatic chuck is connected to a power air source.

[0023] By adopting the above technical solution, the pneumatic chuck is coaxially arranged with the end manipulator of the industrial robot, so that the pneumatic chuck can rotate coaxially with the end manipulator of the industrial robot, thereby driving the stator winding to rotate together with the pneumatic chuck. When the stator winding rotates simultaneously when inserted into the paint scraping mechanism, it 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.

[0024] In a second aspect, the present application provides a stator winding varnish production method, which adopts the following technical solution: A stator winding varnishing production method, applied to the stator winding varnishing production system, comprises the following steps: S1. The stator winding to be dipped in paint is pre-dried and baked to a first preset temperature, and then cooled to a second preset temperature; S2. Place the stator winding pre-dried to the second preset temperature into a paint dipping box, transport the paint into the paint dipping box and cover the stator winding, rotate the stator winding at a first preset speed, and at the same time, circulate the paint in the paint dipping box for a first preset time; S3. Drain the paint in the paint dipping box, rotate the stator winding at a second preset speed for a second preset time, and shake off excess paint on the stator winding; S4. Insert the stator winding after dipping into the paint scraping mechanism, move along the axial direction of the stator winding and rotate around the axis of the stator winding to scrape the paint, and scrape the inner surface and outer surface of the stator winding; S5. Drying the stator winding after painting, baking the stator winding to a third preset temperature and continuing for a third preset time; In step S1, a plurality of stator windings to be dipped in paint are subjected to continuous pre-drying treatment, and in step S5, a plurality of stator windings after being stripped of paint are subjected to continuous drying treatment.

[0025] By adopting the above technical scheme and the above steps, it is possible to achieve continuous pre-drying treatment of several stator windings to be dipped in paint. When the stator winding is dipped in paint, the efficiency of dip-painting is improved by rotating the stator winding and circulating the paint. Excess paint on the stator winding is shaken off by draining the paint and rotating the stator. The stator winding is inserted into a paint scraping mechanism and the stator winding is moved axially and rotated around the axis of the stator to scrape the paint. The inner hole surface and the outer cylindrical surface of the stator winding are scraped with paint to improve the paint scraping efficiency. The multiple stator windings after being scraped in paint are dried, which helps to realize batch, continuous and automated production of stator winding dip-painting.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the stator winding is dipped in paint, the paint in the dip paint box is circulated and conveyed by rotating the stator winding, which increases the fluidity of the paint and the permeability of the stator winding, thereby improving the efficiency of the stator winding dip paint. After the dip paint, the paint in the dip paint box is emptied, and the stator winding is rotated to shake off the excess paint of the stator winding. The excess paint on the inner hole surface and the outer cylindrical surface of the stator winding is scraped off by the paint scraping mechanism, thereby realizing the efficient dip paint treatment of the stator winding; 2. The pumping device can circulate and pump the paint for the stator winding, increase the fluidity of the paint and the permeability of the stator winding. By emptying the paint in the paint dipping box, it is easy to shake off the excess paint on the stator winding, thereby improving the efficiency of the stator winding dipping and removing excess paint; 3. The rotating device drives the stator winding to rotate. When the stator winding is dipped in paint, the rotating motor drives the stator winding to rotate at the paint dipping speed, thereby improving the fluidity and permeability of the paint. When the stator winding is stripped of paint, the rotating motor drives the stator winding to rotate at the paint stripping speed, thereby removing the excess paint from the stator winding and improving the efficiency of dip and stripping. 4. The paint scraping mechanism uses the first elastic paint scraping member to abut against the outer circumferential surface of the stator winding, and the second elastic paint scraping member to abut against the inner hole surface of the stator winding, so as to scrape the paint on the inner and outer surfaces of the stator winding and remove excess paint. The excess paint flows into the storage box for recycling, which improves the efficiency of paint scraping and reduces production costs.

[0027] 5. The pre-baking device is arranged in parallel with the continuous baking device. The discharging end of the pre-baking device is arranged with a varnish dipping box and a storage box in sequence. 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 turnover between the devices and improve the efficiency of the stator winding turnover; 6. The robot clamping device clamps the stator winding through the clamping manipulator, and through the rotation of the industrial robot, the stator winding can be quickly turned over between the pre-baking device, the varnish dipping box, the storage box and the continuous baking device, thereby improving the transportation efficiency of the stator winding between the devices and greatly reducing the labor intensity of the workers; 7. The continuous baking device installs a second conveyor and a second heat preservation cover through a continuous baking rack, conveys the paint-dipped stator winding through the second conveyor, and bakes and heats the stator winding through the second heater on the second heat preservation cover, which helps to realize continuous batch production of baking and heating of the stator winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a stator winding varnishing production system disclosed in this application.

[0029] Figure 2 It is a cross-sectional view of the paint dipping box and storage box disclosed in this application assembled together.

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle I position.

[0031] Figure 4 for Figure 2 A partial enlarged view of the II position.

[0032] Figure 5This is a schematic diagram of the structure of the pre-baking device disclosed in this application.

[0033] Figure 6 It is a cross-sectional view of the pre-baking device disclosed in this application.

[0034] Figure 7 It is a cross-sectional view of the continuous baking device disclosed in this application.

[0035] Figure 8 This is a schematic diagram of the structure of the robot clamping device disclosed in this application.

[0036] Description of reference numerals: 1. Paint dipping box; 2. Storage box; 3. Pumping device; 31. Paint discharge pipe; 32. Paint inlet pipe; 33. Circulation 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. Driving shaft; 44. Rotating joint; 5. Paint scraping mechanism; 51. Mounting frame; 52. External scraping ring; 521. First elastic paint scraping member; 5211. Internal spiral groove; 53. Internal scraping head; 531. Second elastic paint scraping member; 5311. External spiral groove; 6. Pre-baking device; 61. Pre-baking rack; 62. First conveyor; 63. First heat preservation cover; 631. First feed inlet; 632. First discharge outlet; 633 , first heater; 634, cooling fan; 7, continuous baking device; 71, continuous baking rack; 72, second conveyor; 73, second heat preservation 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

[0037] The following combination Figures 1 to 8 This application is described in further detail.

[0038] The embodiment of the present application discloses a stator winding varnishing production system.

[0039] A stator winding varnishing production system. Figure 1 and Figure 2, including a paint dipping box 1 and a storage box 2, the paint dipping box 1 is used to dip paint on the stator winding 9, the storage box 2 is arranged side by side with the paint dipping box 1, the storage box 2 is used to temporarily store the paint in the paint dipping box 1, and a pumping device 3 for conveying the paint in the paint dipping box 1 is provided outside the paint dipping box 1, the paint dipping box 1 and the storage box 2 are connected through the pumping device 3, and the paint in the paint dipping box 1 can be conveyed from the paint dipping box 1 to the storage box 2 for temporary storage through the conveying of the pumping device 3, thereby emptying the paint in the paint dipping box 1, and the paint can also be circulated and conveyed in the paint dipping box 1 through the pumping device 3, thereby improving the fluidity of the paint in the paint dipping box 1, and a rotating device 4 for rotating the stator winding 9 is installed on the paint dipping box 1, and a rotating device 4 for rotating the stator winding 9 is installed in the storage box 2 A paint scraping mechanism 5 is used to scrape the inner hole surface and the outer cylindrical surface of the stator winding 9. When the production system is dipping the stator winding 9 in paint, the stator winding 9 is rotated in the paint dipping box 1 by the rotating device 4. The paint dipping box 1 is connected to the storage box 2 by the pumping device 3, so as to realize the circulating conveying flow of the paint in the paint dipping box 1, increase the fluidity of the paint and the permeability to the stator winding 9, and improve the paint dipping efficiency of the stator winding 9. After dipping, the pumping device 3 pumps the paint in the paint dipping box 1 to the storage box 2, thereby emptying the paint in the paint dipping box 1, and the rotating device 4 rotates to shake off the excess paint of the stator winding 9. The excess paint on the inner hole surface and the outer cylindrical surface of the stator winding 9 is scraped off by the paint scraping mechanism 5, thereby realizing efficient paint dipping treatment of the stator winding 9.

[0040] Reference Figure 1 and Figure 2The pumping device 3 includes a paint discharge pipe 31 and a paint inlet pipe 32. The bottom of the paint dipping box 1 is connected to the bottom of the storage box 2 through the paint discharge pipe 31, and the middle of the paint dipping box 1 is connected to the middle of the storage box 2 through the paint inlet pipe 32. A circulating pump 33 is connected to the paint discharge pipe 31 and the paint inlet pipe 32. The paint inlet of the circulating pump 33 is connected to the paint discharge pipe 31, and the paint outlet of the circulating pump 33 is connected to the paint inlet pipe 32. The paint discharge pipe 31 and the paint inlet pipe 32 are provided with a control valve group 34 for controlling the flow direction of the paint. The control valve group 34 includes 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 one end of the paint discharge pipe 31 close to the paint dipping box 1 to control the discharge of the paint in the paint dipping box 1. The second control valve 342 is installed at one end of the paint inlet pipe 32 close to the paint dipping box 1 to control the delivery of paint to the paint dipping box 1. The third control valve 343 is installed at one end of the paint discharge pipe 31 close to the storage One end of the storage tank 2 is used to control the discharge of paint in the storage tank 2. The fourth control valve 344 is installed at one end of the paint inlet pipe 32 close to the storage tank 2 to control the delivery of paint to the storage tank 2. When the stator winding 9 is dipped in paint in the paint dipping box 1, the circulation pump 33 works, 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 box 1 circulates in the paint dipping box 1 through the paint discharge pipe 31, the circulation pump 33 and the paint inlet pipe 32, thereby increasing the fluidity of the paint and the permeability of the stator winding 9. After the stator winding 9 is dipped in paint, the second control valve 342 is closed, the fourth control valve 344 is opened, and the circulation pump 33 is started. The paint in the paint dipping box 1 is discharged into the storage tank 2 through the circulation pump 33, and the paint in the paint dipping box 1 is emptied. The rotating device 4 drives the stator winding 9 to rotate, and the excess paint on the stator winding 9 is shaken off, thereby improving the efficiency of dipping the stator winding 9 and removing the excess paint.

[0041] Reference Figure 2 and Figure 3The rotating device 4 includes a clamping plate 41, a driving shaft 43 and a rotating motor 42. The clamping plate 41 is located inside the paint dipping box 1 for clamping the stator winding 9. The driving shaft 43 is coaxially fixed with the clamping plate 41. The driving shaft 43 and the paint dipping box 1 are rotatably mounted on the paint dipping box 1 through a bearing. A seal is provided on the end surface of the bearing and the mounting hole of the paint dipping box 1 to prevent paint leakage. One end of the driving shaft 43 away from the clamping plate 41 extends out of the paint dipping box 1 and is transmission-connected to the rotating motor 42. It should be noted that the driving shaft 43 and the rotating motor 4 The output shaft of 2 can be driven by gears, sprockets or belts, and any solution that can achieve reliable transmission of the two can be used. The clamping plate 41 can be a pneumatic chuck or an electric chuck. The end of the drive shaft 43 extending out of the paint dipping box 1 is provided with an axial through hole along the axial direction. The axial through hole extends to the position of the clamping plate 41 and is provided with a radial through hole. The axial through hole and the radial through hole are used to pass wires or power air pipes. After the radial through hole passes the wires or power air pipes, it is sealed to prevent the paint from leaking to the outside. A rotary disc is installed at the end of the drive shaft 43 extending out of the paint dipping box 1 The adapter 44, the rotary joint 44 is used to connect the external wire or power air pipe, so that when the drive shaft 43 rotates, one end of the rotary joint 44 rotates with the drive shaft 43, and the wire or power air pipe connected to the other end does not rotate. The rotary motor 42 is fixedly installed on the outer wall of the paint dipping box 1. The rotating device 4 clamps the stator winding 9 through the clamping plate 41, and drives the drive shaft 43 to rotate through the rotary motor 42, thereby driving the clamping plate 41 and the stator winding 9 to rotate. When the stator winding 9 is dipped in paint, the rotary motor 42 drives the stator winding 9 to dip in paint. It rotates at a speed. It should be noted that the paint dipping speed should not be too high, and it is sufficient to improve the fluidity of the paint. The fluidity and permeability 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 paint dipping speed. The paint dipping speed is higher than the paint dipping speed, and any speed that can shake off excess paint on the stator winding 9 is sufficient. The present application does not limit the two speeds. By shaking off excess paint on the stator winding 9, excess paint on the stator winding 9 is removed, thereby improving the efficiency of paint dipping and paint removal.

[0042] Reference Figure 3 and Figure 4The paint scraping mechanism 5 includes a mounting frame 51 fixedly connected to 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 and the inner scraping head 53 are coaxially arranged, the outer scraping ring 52 is provided with a first elastic paint scraping member 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 member 531 for scraping the inner hole surface of the stator winding 9, the first elastic paint scraping member 521 and the second elastic paint scraping member 531 are both made of polyurethane rubber, a plurality of inner spiral grooves 5211 are provided on the inner surface of the first elastic paint scraping member 521 along the axial direction, and a plurality of outer spiral grooves 5311 are provided on the outer surface of the second elastic paint scraping member 531 along the axial direction, the oil scraped off from the stator winding 9 The paint enters the inner spiral groove 5211 and the outer spiral groove 5311, and flows into the storage box 2 through the inner spiral groove 5211 and the outer spiral groove 5311. The paint scraping mechanism 5 installs 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 member 521, and the inner scraping head 53 supports the second elastic paint scraping member 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 member 521 abuts against the outer circumferential surface of the stator winding 9, and the second elastic paint scraping member 531 abuts against the inner hole surface of the stator winding 9, thereby scraping the inner and outer surfaces of the stator winding 9 and removing excess paint. The excess paint flows into the storage box 2 for recycling, thereby improving the efficiency of paint scraping and reducing production costs.

[0043] Reference Figure 1 The production system also includes a pre-baking device 6 and a continuous baking device 7. The pre-baking device 6 is used to bake the stator winding 9 to be dipped in paint, and the continuous baking device 7 is used to continuously bake the stator winding 9 that has been dipped in paint. The pre-baking device 6 is arranged in parallel with the continuous baking device 7. The discharging end of the pre-baking device 6 is arranged with a dip paint box 1 and a storage box 2 in sequence, and the feeding end of the continuous baking device 7 is arranged opposite to the storage box 2. Through the pre-baking device 6, it is possible to realize continuous pre-baking of multiple stator windings 9 to be dipped in paint, and through the continuous baking device 7, it is possible to realize continuous baking of multiple stator windings 9 that have been dipped in paint, thereby improving the baking efficiency of the stator winding 9 and facilitating the batch production of the stator winding 9 dipped in paint. The pre-baking device 6 is arranged in parallel with the continuous baking device 7, and the discharging end of the pre-baking device 6 is arranged with a dip paint box 1 and a storage box 2 in sequence, and the feeding end of the continuous baking device 7 is arranged opposite to the storage box 2, which is beneficial to shortening the distance of the stator winding 9 between the devices and improving the turnover efficiency of the stator winding 9.

[0044] Reference Figure 5 and Figure 6The pre-baking device 6 includes 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 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 present application, the first conveyor 62 uses a plate chain conveyor, and other embodiments of the present application use a mesh chain conveyor. The first heat preservation cover 63 is provided with a first feed port 631 and a first discharge port 632. The two ends of the first conveyor 62 extend out of the first feed port 631 and the first discharge port 632 respectively. The first heat preservation cover 63 is close to the first feed port 631 and the first discharge port 632. A first heater 633 is provided on one side of 31, and a cooling fan 634 is provided on one side of the first heat preservation cover 63 close to the first discharge port 632. A plurality of first heaters 633 and cooling fans 634 can be provided, and are selected according to the production capacity of the pre-baking device 6. The pre-baking device 6 installs a first conveyor 62 and a first heat preservation cover 63 through a pre-baking rack 61, and the stator winding 9 is conveyed by the first conveyor 62. The stator winding 9 is heated by the first heater 633 on the first heat preservation cover 63, and the stator winding 9 is cooled by the cooling fan 634, which helps to realize continuous batch production of preheating the stator winding 9.

[0045] Reference Figure 7 The continuous baking device 7 includes 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 for conveying the stator winding 9 that has been dipped in paint. The second heat preservation cover 73 is installed with the continuous baking rack 71 and covers the second conveyor 72. In the embodiment of the present application, the second conveyor 72 uses a plate chain conveyor, and other embodiments of the present application use a mesh chain conveyor. The second heat preservation cover 73 is provided with a second feed port 731 and a second discharge port 732. The two ends of the second conveyor 72 extend out of the second feed port 731 and the second discharge port 732 respectively. A plurality of second heaters 733 are provided on the second heat preservation cover 73 along the direction of the second conveyor 72. The continuous baking device 7 installs the second conveyor 72 and the second heat preservation cover 73 through the continuous baking rack 71, conveys the stator winding 9 that has been dipped in paint through the second conveyor 72, and bakes and heats the stator winding 9 through the second heater 733 on the second heat preservation cover 73, which helps to realize continuous batch production of baking and heating the stator winding 9.

[0046] Reference Figure 8The production system also includes a robot clamping device 8, which is used to clamp and transport the stator winding 9. The robot clamping device 8 is arranged in the middle position of the varnish dipping box 1, the storage box 2, the pre-baking device 6 and the continuous baking device 7. The robot clamping device 8 includes an industrial robot 81 and a clamping manipulator 82. The clamping manipulator 82 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 rotation action of the industrial robot 81, the stator winding 9 is quickly turned over between the pre-baking device 6, the varnish dipping box 1, the storage box 2 and the continuous baking device 7, thereby improving the transportation efficiency of the stator winding 9 between the devices.

[0047] Reference Figure 8 The clamping manipulator 82 includes a pneumatic chuck 821, which is coaxially arranged with the end mechanical arm 811 of the industrial robot 81. The pneumatic chuck 821 includes a disk body 8211 and a clamping claw 8212. The clamping claw 8212 is installed on the disk body 8211 for clamping the stator winding 9. The pneumatic chuck 821 is connected to the power air source. The pneumatic chuck 821 is coaxially arranged with the end mechanical arm 811 of the industrial robot 81, so that the pneumatic chuck 821 can rotate coaxially 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 rotates at the same time when inserted into the paint scraping mechanism 5, it can help to improve the paint scraping effect of the first elastic paint scraping member 521 and the second elastic paint scraping member 531 on the inner and outer surfaces of the stator winding 9.

[0048] The working principle of a stator winding varnishing production system is as follows: a stator winding 9 to be pre-baked is placed on a first conveyor 62 located at a first feed port 631, the first conveyor 62 is started, the first conveyor 62 moves the stator winding 9 in a first heat preservation cover 63, the first heater 633 bakes and heats the stator winding 9 to a first preset temperature, and then a cooling fan 634 cools the stator winding 9 to a second preset temperature, the stator winding 9 moves to a first discharge port 632, the robot clamping device 8 is started, and the pneumatic chuck 821 clamps the stator winding 9. After the stator winding 9 is pre-dried, the industrial robot 81 rotates, and the pneumatic chuck 821 places the stator winding 9 on the clamping plate 41 of the rotating device 4. The clamping plate 41 clamps the stator winding 9, and the third control valve 343 and the second control valve 342 are opened. The circulation pump 33 is started to pump the paint in the storage tank 2 into the paint dipping tank 1 and immerse the stator winding 9. The third control valve 343 is closed, and the first control valve 341 is opened to circulate the paint in the paint dipping tank 1. The rotating motor 42 is turned on to rotate the stator winding 9 at the paint dipping speed. The paint is dipped for a period of time. After that, the second control valve 342 is closed, the fourth control valve 344 is opened, the paint in the paint dipping box 1 is discharged into the storage box 2, the rotary motor 42 is adjusted to rotate the stator winding 9 at the paint-stripping speed, so as to shake off the excess paint on the stator winding 9, the industrial robot 81 rotates, the pneumatic chuck 821 clamps the stator winding 9 and inserts the first elastic paint scraping member 521 and the second elastic paint scraping member 531, and at the same time, the end robot arm 811 rotates to drive the stator winding 9 to rotate, and the inner hole surface and the outer cylindrical surface of the stator winding 9 are painted to scrape off the excess paint, and the pneumatic chuck The disk 821 clamps the stator winding 9 after paint scraping, the industrial robot 81 rotates, and the pneumatic chuck 821 clamps the stator winding 9 to the second conveyor 72 located at the second feed port 731, and the second conveyor 72 is started to convey the stator winding 9 to the second thermal insulation cover 73. The second heater 733 heats and bakes the stator winding 9, and the dried stator winding 9 is conveyed to the second discharge port 732, completing the paint dipping and drying production of the stator winding 9. The above process is repeated to realize batch, continuous and automated production of the stator winding 9.

[0049] The embodiment of the present application also discloses a stator winding varnish production method.

[0050] A stator winding varnishing production method, applied to the above-mentioned stator winding varnishing production system, comprises the following steps: S1. The stator winding 9 to be dipped in paint is pre-dried and baked to a first preset temperature, and then cooled to a second preset temperature; It should be noted that the first preset temperature and the second preset temperature need to be set according to the insulation level of the stator winding 9, and this application does not limit this. S2. Place the stator winding 9 pre-dried to the second preset temperature into the paint dipping box 1, transport the paint into the paint dipping box 1 and cover the stator winding 9, rotate the stator winding 9 at a first preset speed, and at the same time, circulate the paint in the paint dipping box 1 for a first preset time; S3. Drain the paint in the paint dipping box 1, rotate the stator winding 9 at a second preset speed for a second preset time, and throw off the excess paint on the stator winding 9; S4. Insert the stator winding 9 after the dip painting into the paint scraping mechanism 5, move the stator winding 9 axially and rotate around the axis of the stator winding 9 to scrape the paint, and scrape the inner surface and outer surface of the stator winding 9; S5. The stator winding 9 is dried after the paint is scraped, and the stator winding 9 is baked to a third preset temperature and lasts for a third preset time; In step S1, a plurality of stator windings 9 to be dipped in paint are subjected to continuous pre-drying treatment, and in step S5, a plurality of stator windings 9 after being stripped of paint are subjected to continuous drying treatment.

[0051] The stator winding paint production method can realize continuous pre-drying treatment of several stator windings 9 to be painted. When the stator winding 9 is painted, the paint dipping efficiency is improved by rotating the stator winding 9 and circulating the paint. The excess paint on the stator winding 9 is shaken off by emptying the paint and rotating the stator winding 9. The stator winding 9 is inserted into the paint scraping mechanism 5, and the stator winding 9 is moved axially and rotated around the stator axis to scrape the paint. The inner hole surface and the outer cylindrical surface of the stator winding 9 are scraped with paint to improve the paint scraping efficiency. The multiple stator windings 9 after being scraped with paint are dried, which helps to realize batch, continuous and automated production of stator winding 9 for paint dipping.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application in sequence. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stator winding varnishing production system, characterized in that: The invention comprises a paint dipping box (1) for dipping a stator winding (9) in paint, a storage box (2) arranged side by side with the paint dipping box (1) for temporarily storing the paint in the paint dipping box (1), a pumping device (3) for conveying the paint in the paint dipping box (1) is arranged outside the paint dipping box (1), the paint dipping box (1) and the storage box (2) are connected via the pumping device (3), a rotating device (4) for rotating the stator winding (9) is installed on the paint dipping box (1), and a paint scraping mechanism (5) for scraping the inner hole surface and the outer cylindrical surface of the stator winding (9) is arranged inside the storage box (2).

2. A stator winding varnishing production system according to claim 1, characterized in that: The pumping device (3) comprises a paint discharge pipe (31) connected to the bottom of the paint dipping box (1) and the bottom of the storage box (2), a paint inlet pipe (32) connected to the middle of the paint dipping box (1) and the middle of the storage box (2), and a circulating pump (33) connected to the paint discharge pipe (31) and the paint inlet pipe (32), the paint inlet of the circulating pump (33) being connected to the paint discharge pipe (31), the paint outlet of the circulating pump (33) being connected to the paint inlet pipe (32), and the paint discharge pipe (31) and the paint inlet pipe (32) being connected to a control valve group (34) for controlling the flow direction of the paint.

3. A stator winding varnishing production system according to claim 2, characterized in that: The rotating device (4) comprises a clamping plate (41) located inside the paint dipping box (1) for clamping the stator winding (9), a rotating motor (42) for driving the clamping plate (41) to rotate, and a driving shaft (43) coaxially fixed to the clamping plate (41), wherein the driving shaft (43) is rotationally connected to the paint dipping box (1), and one end of the driving shaft (43) away from the clamping plate (41) extends out of the paint dipping box (1) and is transmission-connected to the rotating motor (42).

4. A stator winding varnishing production system according to claim 2, characterized in that: The paint scraping mechanism (5) comprises a mounting frame (51) fixedly connected to 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) 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 paint on 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 paint on the inner hole surface of the stator winding (9).

5. A stator winding varnishing production system according to any one of claims 1 to 4, characterized in that: The production system further comprises a pre-baking device (6) for baking the stator winding (9) to be dipped in varnish, and a continuous baking device (7) for continuously baking the stator winding (9) which has been dipped in varnish. The pre-baking device (6) and the continuous baking device (7) are arranged in parallel. The discharging end of the pre-baking device (6) is arranged with the varnish dipping box (1) and the storage box (2) in sequence. The feeding end of the continuous baking device (7) is arranged opposite to the storage box (2).

6. A stator winding varnishing production system according to claim 5, characterized in that: The pre-baking device (6) comprises a pre-baking rack (61), a first conveyor (62) installed on the pre-baking rack (61) for conveying the stator winding (9), and a first heat-insulating cover (63) installed on the pre-baking rack (61), wherein the first heat-insulating cover (63) is provided with a first feed port (631) and a first discharge port (632), and two ends of the first conveyor (62) extend out of the first feed port (631) and the first discharge port (632) respectively, and a first heater (633) is provided on a side of the first heat-insulating cover (63) close to the first feed port (631), and a cooling fan (634) is provided on a side of the first heat-insulating cover (63) close to the first discharge port (632).

7. A stator winding varnishing production system according to claim 5, characterized in that: The continuous baking device (7) comprises a continuous baking rack (71), a second conveyor (72) installed on the continuous baking rack (71) for conveying the stator winding (9), and a second heat-insulating cover (73) installed on the continuous baking rack (71), wherein the second heat-insulating cover (73) is provided with a second feed port (731) and a second discharge port (732), and the two ends of the second conveyor (72) extend out of the second feed port (731) and the second discharge port (732) respectively, and a plurality of second heaters (733) are provided on the second heat-insulating cover (73) along the direction of the second conveyor (72).

8. The stator winding varnishing production system according to claim 5, characterized in that: The production system also includes a robot clamping device (8) for clamping and transporting the stator winding (9), wherein the robot clamping device (8) includes an industrial robot (81) and a clamping manipulator (82), wherein the clamping manipulator (82) is fixedly mounted on the free end of the end robot arm (811) of the industrial robot (81).

9. A stator winding varnishing production system according to claim 8, characterized in that: The clamping manipulator (82) comprises a pneumatic chuck (821), the pneumatic chuck (821) being coaxially arranged with the end manipulator (811) of the industrial robot (81), the pneumatic chuck (821) comprising a disk body (8211), a clamping claw (8212) mounted on the disk body (8211) for clamping the stator winding (9), and the pneumatic chuck (821) being connected to a power air source.

10. A stator winding varnishing production method, applied to a stator winding varnishing production system as claimed in any one of claims 1 to 4 and 6 to 9, characterized in that: The following steps are involved: S1. The stator winding (9) to be dipped in paint is pre-dried and baked to a first preset temperature, and then cooled to a second preset temperature; S2. placing the stator winding (9) pre-dried to a second preset temperature into the paint dipping box (1) for paint dipping, rotating the stator winding (9) at a preset first speed, and at the same time, circulating the paint in the paint dipping box (1) for a first preset time; S3. Emptying the paint in the paint dipping box (1), rotating the stator winding (9) at a preset second speed for a second preset time, and removing excess paint on the stator winding (9); S4. inserting the stator winding (9) after the dip painting into the paint scraping mechanism (5), moving the stator winding (9) axially and rotating around the axis of the stator winding (9) to scrape the paint, and performing paint scraping on the inner hole surface and the outer cylindrical surface of the stator winding (9); S5. The stator winding (9) after the paint is dried, and the stator winding (9) is baked to a third preset temperature and for a third preset time; In step S1, a plurality of stator windings (9) to be dipped in paint are subjected to continuous pre-drying treatment, and in step S5, a plurality of stator windings (9) after being stripped of paint are subjected to continuous drying treatment.

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