A stator of an electric machine

Abstract

The application discloses a kind of motor stator's dip paint production line, it is characterized in that the dip paint device includes the feeding mechanism of stator feeding, the processing mechanism of stator dip paint, paint, spin dry, end face paint removal and the blowing mechanism of installation in conveying line and the blowing of stator inner hole is carried out paint removal.The application is set by PLC controller, dip paint device, conveying line, drying device, and stator is automatically carried out dip paint, drying, cooling, discharging work;By the setting of dip paint device, several stators are automatically uninterrupted and carried out dip paint, paint, spin dry, end face paint removal, inner hole blowing paint removal work, and the end face and inner hole of stator are automatically removed paint while automatically completing dip paint work, avoid end face and inner hole to produce paint liquid accumulation, paint liquid is cooled and produces accumulation, lead to stator end face uneven, inner hole has accumulation, affect the assembly of stator, so as to affect the use performance and service life of motor after assembly is completed.

Description

Technical Field

[0001] This invention relates to stator processing, specifically to a production line for impregnating motor stators. Background Technology

[0002] As the power source for various equipment, electric motors are widely used in all sectors of society. The stator is the core component of the motor. During the stator production process, the stator windings need to be impregnated with varnish to prevent direct contact between conductors or between conductors and air. This prevents short circuits between conductors and damage to the coils caused by direct contact between conductors and air. Therefore, the impregnation effect of the motor stator winding coils directly affects the service life of the motor.

[0003] Currently, there are two main methods for impregnating the insulating varnish of motor stators: immersion and dripping. While dripping can reduce the amount of varnish used and the amount of cleaning required for the core surface, the impregnation effect is not ideal and fails to meet expectations. Immersion can provide reliable product quality, but it consumes a large amount of varnish. Excess varnish dripping from the stator is wasteful, and varnish nodules can form on the stator end faces and inner holes. If varnish nodules remain, they will cause unevenness on the inner hole surface and end faces, affecting stator assembly. If assembly problems occur, they will affect the quality and lifespan of the assembled motor. After impregnation or coating, the stator needs to be dried using a drying device. Many existing drying devices use sprockets and chains to move the stator within the device. The way the stator is fixed to the chain varies; some are placed vertically, others horizontally. When undried, the paint on the stator will slip due to the stator's placement and the paint's own weight. If the paint flows into the stator's threaded holes, it will cause blockage after drying, preventing assembly and rendering the stator unusable. Therefore, a new impregnation production line for motor stators is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a motor stator impregnation production line to solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a motor stator impregnation production line, comprising an impregnation device for impregnating the stator, a conveyor line for conveying and transferring the stator, a drying device for drying the stator, a robot for loading and unloading the stator between the conveyor line and the drying device, and a PLC controller for controlling the impregnation device, the conveyor line, the drying device, and the robot to automatically process the stator inside the machine housing. A tray for holding the stator is placed on the conveyor line. The impregnation device includes a loading mechanism for feeding the stator, a processing mechanism for impregnating, coating, spin-drying, and removing paint from the end faces of the stator, and an air-blowing mechanism installed on the conveyor line for removing paint from the inner holes of the stator. The processing mechanism includes a frame, a paint tank, a worktable movably mounted on the frame, and a main control unit mounted on the frame for controlling the indexing rotation of the worktable. The system includes a motor, several robotic arms mounted on a workbench, gears mounted on the robotic arms, a transmission component mounted on the workbench and meshing with the gears to drive the robotic arms to rotate, a rotating mechanism mounted on a frame, a paint-soaking tank mounted on the frame that can move up and down and is connected to a paint tank via a pipeline, a paint tray mounted on the frame to collect excess paint on the stator and return the paint to the paint tank, a spin-drying protective tank mounted on the frame that provides protection during stator spin-drying and can be raised and lowered, and an end-face paint removal mechanism mounted on the frame for removing paint from the end face of the stator; the end-face paint removal mechanism includes a second motor mounted on the frame, a tilting frame connected to the second motor, a lifting cylinder mounted on the tilting frame, a third motor mounted on the lifting cylinder, a felt pad mounted on the third motor, a water tank mounted on the frame, and a pressing frame mounted on the frame for squeezing the felt pad dry.

[0006] More preferably, the feeding mechanism includes an inclined feeding frame for automatically conveying the stator to the feeding position, several bearings mounted on the feeding frame to improve the smoothness of the stator's movement, a blocking cylinder mounted on the feeding frame to restrict and block the stator's movement to the feeding position, a guide frame mounted on one side of the feeding frame to guide the enameled wire on the stator, a flipping cylinder mounted on the feeding frame, and a flipping plate mounted on the flipping cylinder at the tail end of the guide frame for flipping the lead wire; the processing mechanism is equipped with a feeding cylinder for lifting the stator for feeding and a lifting frame mounted on the feeding cylinder at a position corresponding to the feeding frame.

[0007] More preferably, the frame is equipped with an impregnation cylinder for pushing the impregnation tank up and down and a spin-drying cylinder for pushing the spin-drying protective tank up and down; the paint tank is also equipped with a stirring motor, which is driven by a stirring shaft with stirring blades on the stirring shaft; and a level gauge is installed inside the impregnation tank.

[0008] More preferably, the rotating mechanism includes a lifting cylinder mounted on the frame, a lifting frame slidably mounted on the frame and connected to the lifting cylinder, a rotary motor mounted on the lifting frame, and a rotating component movably mounted on the lifting frame and driven by the rotary motor; the rotating component is provided with a positioning groove, and the rotating component is provided with a positioning block adapted to the positioning groove, and the rotating component drives the rotating component to rotate through the cooperation of the positioning block and the positioning groove.

[0009] More preferably, the conveyor line is divided into a loading conveyor line for conveying the dipped stators to the drying mechanism, a unloading conveyor, an unloading conveyor line for conveying the dried stators to the unloading conveyor, and an unloading mechanism for transferring the stators on the unloading conveyor line to the unloading conveyor; both the loading and unloading conveyor lines include a conveyor frame, a conveyor motor mounted on the conveyor frame, and a sprocket movably mounted on the conveyor frame and driven by the conveyor motor, with a chain mounted on the sprocket for moving the pallet; the unloading conveyor includes an unloading conveyor frame, a roller motor mounted on the unloading conveyor mechanism, and a conveyor belt mounted on the roller motor; the air blowing mechanism is installed on the loading conveyor line.

[0010] More preferably, the blowing mechanism includes a blowing bracket mounted on a conveyor frame, a blowing motor mounted on the blowing bracket, a lead screw movably mounted on the blowing bracket and driven by the blowing motor, a slide rail mounted on the blowing bracket, a nut seat movably connected to the lead screw, a movable frame slidably mounted on the slide rail and fixedly connected to the nut seat, a blowing pipe mounted on the movable frame, a guide rod mounted on the movable frame, and a protective cover mounted on the guide rod; one end of the blowing pipe is inside the protective cover, and a blowing nozzle is installed at the end of the blowing pipe inside the protective cover, and a plurality of air outlet holes are arranged in an array along the axis of the nozzle.

[0011] Further preferably, both the feeding conveyor and the unloading conveyor are equipped with screw-driving machines. The screw-driving machine on the feeding conveyor is used to tighten screws, and the screw-driving machine on the unloading conveyor is used to loosen screws. A cooling box is also installed on the unloading conveyor, and several fans are installed on the cooling box to cool the stators. A transfer frame is also installed between the conveyor frames of the feeding and unloading conveyors, and several guide bearings are installed on the transfer frame. A push cylinder for pushing the pallet is also installed on the conveyor frame.

[0012] More preferably, the unloading mechanism includes a transfer section and an unloading section. Both the transfer section and the unloading section include an unloading frame, a transverse guide rail mounted on the unloading frame, a transverse moving frame slidably mounted on the transverse guide rail, a transfer cylinder mounted on the transverse moving frame, an unloading manipulator mounted on the transfer cylinder, and a drive motor mounted on the unloading frame for driving the transverse moving frame to move. The unloading mechanism also includes an unloading track mounted on the conveyor frame and the processing mechanism. The unloading track is equipped with several bearings for improving the smoothness of stator movement, a blocking cylinder mounted on the unloading track for restricting and blocking the stator from moving to the unloading position, an unloading cylinder mounted on the unloading track for unloading the stator, and an unloading frame mounted on the unloading cylinder.

[0013] More preferably, the drying device includes an oven and a conveying device installed inside the oven for conveying the stator; the oven is provided with a partition, which divides it into a drying layer and a cooling layer; a heating device is installed in the drying layer, and a fan is installed in the cooling layer; the conveying device includes a driving sprocket, a driven sprocket, a conveying chain installed on the driving sprocket, and a drying motor installed on the oven for driving the driving sprocket to rotate; a mounting base for mounting the stator is installed on the tray, and a support rod for fixing the mounting base is installed on the conveying chain.

[0014] More preferably, the support rod is equipped with an elastic retaining bead, the fixing seat is provided with an installation hole adapted to the support rod, and the installation hole is provided with a retaining groove adapted to the elastic retaining bead; the fixing seat is also equipped with a fixing baffle that fixes the stator on the fixing seat and blocks the threaded hole on the stator to prevent paint from entering the threaded hole.

[0015] This invention, through the setup of a PLC controller, a coating device, a conveyor line, and a drying device, automatically performs coating, drying, cooling, and unloading operations on the stator. The coating device automatically and continuously performs coating, spraying, spin-drying, end-face coating removal, and inner-hole coating removal on several stators. While automatically completing the coating process, it also automatically removes coating from the stator end faces and inner holes, preventing paint accumulation and the formation of lumps after cooling. This prevents uneven stator end faces and lumps in the inner holes, which would affect stator assembly and consequently the performance and lifespan of the assembled motor. The end-face paint removal mechanism is equipped with a second motor, a flipping frame, a pressing frame, and a water tank. During use, the number of times the wool felt can be used can be set. After the set number of uses is reached, the second motor flips the wool felt and pushes it into the water tank via a lifting cylinder for cleaning. This prevents excessive paint residue on the wool felt from prolonged use, which would prevent complete paint removal from the stator end face and thus hinder the effective end-face paint removal. The pressing frame serves as support during the compression of the wool felt, and the lifting cylinder, in conjunction with the pressing frame, compresses the water from the wool felt. Attached Figure Description

[0016] Appendix Figure 1 This is a top view of the structure of the present invention; Appendix Figure 2 This is a partial structural schematic diagram of the conveyor line in this invention; Appendix Figure 3 This is a partial structural schematic diagram of the paint impregnation device and conveyor line in this invention; Appendix Figure 4 This is a partial structural schematic diagram of the paint impregnation device and conveyor line in this invention; Appendix Figure 5 This is a partial structural schematic diagram of the paint impregnation device in this invention; Appendix Figure 6 This is a partial structural schematic diagram of the paint impregnation device in this invention; Appendix Figure 7 This is a schematic diagram of the rotating mechanism in the processing mechanism of the present invention; Appendix Figure 8 This is a partial structural schematic diagram of the paint impregnation device in this invention; Appendix Figure 9 This is a partial structural schematic diagram of the paint impregnation device in this invention; Appendix Figure 10 This is a schematic diagram of the end-face paint removal mechanism in the processing mechanism of the present invention; Appendix Figure 11 This is a schematic diagram of the end-face paint removal mechanism in the processing mechanism of the present invention; Appendix Figure 12 This is a schematic diagram of the end-face paint removal mechanism in the processing mechanism of the present invention; Appendix Figure 13 This is a partial structural schematic diagram of the conveyor line in this invention; Appendix Figure 14 This is a partial structural schematic diagram of the conveyor line in this invention; Appendix Figure 15 This is a schematic diagram of the air blowing mechanism in this invention; Appendix Figure 16 This is a schematic diagram of the air blowing mechanism in this invention; Appendix Figure 17This is a schematic diagram of the structure of the stirring shaft inside the paint channel in this invention; Appendix Figure 18 This is a schematic cross-sectional view of the oven in this invention; Appendix Figure 19 This is a schematic diagram of the tray structure in this invention; Appendix Figure 20 This is a schematic diagram of the structure of the fixed base and support rod in this invention; Appendix Figure 21 This is a partial exploded view of the fixing base in this invention; Appendix Figure 22 This is a cross-sectional structural diagram of the fixed base and support rod in this invention.

[0017] Legend: 100. Dipping device; 1. Feeding mechanism; 11. Feeding rack; 12. Bearing; 13. Material blocking cylinder; 14. Guide frame; 15. Tilting cylinder; 16. Folding plate; 17. Feeding cylinder; 18. Lifting frame; 2. Processing mechanism; 21. Frame; 22. Paint tank; 23. Workbench; 24. Main motor; 25. Robot arm; 26. Gear; 27. Transmission component; 28. Rotating mechanism; 29. ​​Dipping tank; 210. Paint tray; 211. Spin-drying protective tank; 212. Dipping cylinder; 213. Spin-drying cylinder; 214. Stirring motor; 21 5. Stirring shaft; 216. Stirring blades; 218. Lifting cylinder; 219. Lifting frame; 220. Rotary motor; 221. Rotating component; 222. Positioning groove; 223. Positioning block; 3. Conveyor line; 31. Conveyor frame; 32. Conveyor motor; 33. Sprocket; 34. Chain; 35. Feeding conveyor line; 351. Transfer frame; 352. Guide bearing; 353. Push cylinder; 36. Discharging conveyor; 361. Discharging conveyor frame; 363. Drum motor; 364. Conveyor belt; 37. Discharging conveyor line; 371. Cooling box; 372. Fan; 4. Air blowing mechanism; 41. Air blowing bracket; 42. Air blowing motor; 43. Lead screw; 44. Slide rail; 45. Nut seat; 46. Moving frame; 47. Air blowing pipe; 48. Guide rod; 49. Protective cover; 410. Air blowing nozzle; 411. Air outlet; 5. End face paint removal mechanism; 51. Motor II; 52. Tilting frame; 53. Lifting cylinder; 54. Motor III; 55. Wool felt; 56. Water tank; 57. Pressing frame; 6. Unloading mechanism; 61. Unloading track; 62. Unloading cylinder; 63. Unloading frame; 7. Transfer mechanism; 701. Transfer section; 702. Unloading section; 71 72. Transfer frame; 73. Lateral guide rail; 74. Lateral moving frame; 75. Transfer cylinder; 76. Unloading robot; 87. Drive motor; 88. Drying device; 801. Robot; 81. Drying oven; 82. Conveying device; 821. Drive sprocket; 822. Driven sprocket; 823. Conveyor chain; 824. Drying motor; 83. Partition; 84. Drying layer; 841. Heating device; 85. Cooling layer; 9. Screwdriver; 10. Tray; 101. Fixed base; 103. Support rod; 104. Elastic ball bearing; 105. Mounting hole; 106. Slot; 107. Fixed baffle. Detailed Implementation

[0018] The impregnation production line for motor stators according to the present invention will be further described below with reference to the accompanying drawings.

[0019] See Figure 1-22As shown, a motor stator impregnation production line includes an impregnation device 100 for impregnating the stator, a conveyor line 3 for conveying and transferring the stator, a drying device 8 for drying the stator, a robot 801 for loading and unloading the stator between the conveyor line 3 and the drying device 8, and a PLC controller for controlling the impregnation device 100, the conveyor line 3, the drying device 8, and the robot 801 to automatically process the stator. The conveyor line 3 has a tray for holding the stator. The impregnation device 100 includes a loading mechanism 1 for loading the stator, a processing mechanism 2 for impregnating, coating, spin-drying, and removing paint from the end faces of the stator, and an air blowing mechanism 4 installed on the conveyor line 3 for blowing paint from the inner holes of the stator. The processing mechanism 2 includes a frame 21, a paint tank 22, a worktable 23 movably mounted on the frame 21, a main motor 24 mounted on the frame 21 for controlling the indexing rotation of the worktable 23, several robotic arms 25 mounted on the worktable 23, and a PLC controller for controlling the impregnation device 100, the conveyor line 3, the drying device 8, and the robot 801 to automatically process the stator. Gear 26 on the robotic arm 25; transmission component 27 mounted on the worktable 23 and meshing with gear 26 to drive the robotic arm 25 to rotate; rotating mechanism 28 mounted on frame 21; paint dipping tank 29 mounted on frame 21 that can move up and down and is connected to paint tank 22 via pipeline; paint tray 210 mounted on frame 21 to collect excess paint on the stator and return the paint to paint tank 22; and a vertically movable spin dryer mounted on frame 21 for protection during stator spin drying. Dry protective barrel 211 and end face paint removal mechanism 5 installed on frame 21 for removing paint from the end face of stator; the end face paint removal mechanism 5 includes motor 2 51 installed on frame 21, flipping frame 52 connected to motor 2 51, lifting cylinder 53 installed on flipping frame 52, motor 3 54 installed on lifting cylinder 53, wool felt 55 installed on motor 3 54, water tank 56 installed on frame 21, and pressing frame 57 installed on frame 21 for squeezing wool felt 55 dry. By setting up a PLC controller, a paint dipping device 100, a conveyor line 3, and a drying device 8, the stator is automatically dipped, dried, cooled, and unloaded. The paint dipping device 100 automatically and continuously dips, coats, spins dry, removes paint from the end faces, and removes paint from the inner holes of several stators. While automatically completing the paint dipping process, it also automatically removes paint from the end faces and inner holes of the stator, preventing paint accumulation on the end faces and inner holes. Paint accumulation after cooling can cause unevenness on the end faces and nodules in the inner holes, affecting the assembly of the stator and thus the performance and service life of the motor after assembly. The end-face paint removal mechanism 5 is equipped with a second motor 51, a flipping frame 52, a pressing frame 57, and a water tank 56. During use, the number of times the wool felt 55 can be used can be set. After the number of uses is reached, the second motor 51 flips the wool felt 55, and the lifting cylinder 53 pushes it into the water tank 56 for cleaning. This prevents excessive paint residue on the wool felt 55 from being used for a long time, which would prevent complete paint removal from the stator end face and leave paint residue, thus failing to achieve the desired end-face paint removal effect. The pressing frame 57 serves as support for the wool felt 55 during compression. The lifting cylinder 53 provides power, and in conjunction with the pressing frame 57, it compresses the water on the wool felt 55. When the stator is in the end-face paint removal position, the lifting cylinder 53 drives the motor 54 and the felt 55 to move upward until the felt 55 is in contact with the stator end face. Then the motor 54 is started, and the motor 54 drives the felt 55 to rotate. At the same time, the rotating mechanism 28 drives the stator to rotate, and the stator end face is painted. When the felt 55 has been used a set number of times, the motor 51 drives the flipping frame 52 and the lifting cylinder 53, the motor 54 and the felt 55 mounted on the flipping frame 52 to flip 180°. Then the lifting cylinder 53 is started, and the lifting cylinder 53 pushes the felt 55 into the water tank 56 for cleaning with water. After cleaning, it is rotated 90° and aligned with the pressing frame 57. Then the lifting cylinder 53 is started to push the felt 55 into contact with the pressing frame 57 and squeeze the felt 55. After squeezing out the water, it is reset and ready for the next end-face paint removal. Furthermore, the feeding mechanism 1 includes a feeding frame 11 inclined for automatically conveying the stator to the feeding position, several bearings 12 mounted on the feeding frame 11 to improve the smooth movement of the stator, a blocking cylinder 13 mounted on the feeding frame 11 to restrict and block the movement of the stator to the feeding position, a guide frame 14 mounted on one side of the feeding frame 11 to guide the enameled wire on the stator, a tilting cylinder 15 mounted on the feeding frame 11, and a tilting plate 16 mounted on the tilting cylinder 15 at the tail end of the guide frame 14 to tilt the lead wire; the processing mechanism 2 is equipped with a feeding cylinder 17 for lifting the stator for feeding and a lifting frame 18 mounted on the feeding cylinder 17 at a position corresponding to the feeding frame 11. By tilting the loading rack 11 and installing several bearings 12, the movement of the stator on the loading rack 11 can be achieved without power. The bearings 12 also increase the smoothness of the stator's movement. The baffle cylinder 13 blocks the stators arranged on the loading rack 11, ensuring that only one stator is waiting to be loaded at each loading position. After the robot arm 25 picks up a stator, the baffle cylinder 13 releases another stator to move to the loading position to wait for loading. During loading, the loading cylinder 17 is activated to start loading. Cylinder 17 drives lifting frame 18, which in turn moves the stator upward to a set position to await gripping by robot arm 25. Guide frame 14 guides the movement of lead wire assembly on the stator, allowing the lead wire assembly to move to folding plate 16. Folding plate 16 is set by flipping cylinder 15, which rotates the folding plate 16 to fold the lead wire, preventing the lead wire assembly from being immersed in paint during subsequent stator impregnation.

[0020] Furthermore, the frame 21 is equipped with an impregnation cylinder 212 for moving the impregnation tank 29 up and down, and a spin-drying cylinder 213 for moving the spin-drying protective tank 211 up and down; the paint tank 22 is also equipped with a stirring motor 214, which is driven by a stirring shaft 215, and the stirring shaft 215 is provided with stirring blades 216; a level gauge is installed inside the impregnation tank 29; and a pump is connected to the pipeline connecting the paint tank 55 and the impregnation tank 29. To ensure the uniformity of the paint liquid, the stirring motor 214 is started at regular intervals in the paint tank 22. The stirring motor 214 drives the stirring shaft 215 and stirring blades 216 to rotate, thereby agitating the paint liquid and making it uniform. According to the level gauge setting, when the paint liquid level in the paint dipping tank 29 is lower than the set level, the pump is started by the PLC controller. The pump pumps the paint liquid in the paint tank 22 into the paint dipping tank 29 to avoid insufficient paint liquid in the paint dipping tank 29, which would lead to incomplete stator dipping.

[0021] Furthermore, the rotating mechanism 28 includes a lifting cylinder 218 mounted on the frame 21, a lifting frame 219 slidably mounted on the frame 21 and connected to the lifting cylinder 218, a rotary motor 220 mounted on the lifting frame 219, and a rotating component 221 movably mounted on the lifting frame 219 and drivenly connected to the rotary motor 220; the rotating component 27 is provided with a positioning groove 222, and the rotating component 221 is provided with a positioning block 223 adapted to the positioning groove 222. The rotating component 221 drives the rotating component 27 to rotate through the cooperation of the positioning block 223 and the positioning groove 222. During stator processing, the stator needs to rotate at the dipping, drying, and end-face paint removal stations. Therefore, the frame 21 is equipped with a rotating mechanism 28 at these stations. The robotic arm 25 is equipped with gears 26 and transmission components 27 that cooperate with the rotating mechanism 28. When the stator is at one of these stations, the lifting cylinder 218 is activated. The lifting cylinder 218 drives the lifting frame 219 downwards, causing the positioning block 223 on the rotating component 221 to insert into the positioning groove 222 on the transmission component 27. Then, the rotary motor 220 is activated. The rotating component 221 is driven to rotate. The rotating component 221 drives the transmission component 27 to rotate through the cooperation of the positioning block 223 and the positioning groove 222. The transmission component 27 drives the robot arm 25 to rotate through the meshing connection of the gear 26, thereby driving the stator to rotate. The rotating mechanism 28 and the robot arm 25 are separated. The rotating mechanism 28 only needs to be set at the work where the stator needs to rotate. It is not necessary to set the rotating mechanism 28 at each work station, which saves costs. Moreover, the rotation of the worktable 23 will not be interfered with by the rotating mechanism 28. During spin drying, the spin drying protective barrel 211 is lifted by the spin drying cylinder 213. After the spin drying protective barrel 211 surrounds the stator, the stator is rotated by the rotary motor 220, and the spin drying is carried out by centrifugal force.

[0022] Furthermore, the conveyor line 3 is divided into a loading conveyor line 35 for conveying the dipped stators to the drying device 8, a discharging conveyor 36, a discharging conveyor line 37 for conveying the dried stators to the discharging conveyor 36, and a discharging mechanism 7 for transferring the stators on the discharging conveyor line 37 to the discharging conveyor 36. Both the loading conveyor line 35 and the discharging conveyor line 35 include a conveyor frame 31, a conveyor motor 32 mounted on the conveyor frame 31, and a sprocket 33 movably mounted on the conveyor frame 31 and connected to the conveyor motor 32. A chain 34 for moving the pallet is mounted on the sprocket 33. The discharging conveyor 36 includes a discharging conveyor frame 361, a roller motor 363 mounted on the discharging conveyor frame 361, and a conveyor belt 364 mounted on the roller motor 363. The air blowing mechanism 4 is mounted on the loading conveyor line 35. During operation, the conveyor motor 32 drives the sprocket 33 to rotate, and the sprocket 33 drives the chain 34 to move, thereby moving the tray 10 placed on the chain 34.

[0023] Furthermore, the air blowing mechanism 4 includes an air blowing bracket 41 mounted on the conveyor frame 31, an air blowing motor 42 mounted on the air blowing bracket 41, a lead screw 43 movably mounted on the air blowing bracket 41 and drivenly connected to the air blowing motor 42, a slide rail 44 mounted on the air blowing bracket 41, a nut seat 45 movably connected to the lead screw 43, a movable frame 46 slidably mounted on the slide rail 44 and fixedly connected to the nut seat 45, an air blowing pipe 47 mounted on the movable frame 46, a guide rod 48 mounted on the movable frame 46, and a protective cover 49 mounted on the guide rod 48; one end of the air blowing pipe 47 is inside the protective cover 49, and a blowing nozzle 410 is installed at the end of the air blowing pipe 47 inside the protective cover 49, and a plurality of air outlet holes 411 are arranged in an array along the axis of the blowing nozzle 410; When the stator moves to the air blowing and paint removal station with the tray, the air blowing motor 42 is started by the PLC control. The air blowing motor 42 drives the lead screw 43 to rotate. The lead screw 43 drives the moving frame 46 to move downward through the cooperation with the nut seat 45. The moving frame 46 drives the protective cover 49 to move downward. While the protective cover 49 moves downward to cover the coil, air is supplied to the air blowing pipe 47 through the air source. The air blowing nozzle 410 blows air into the inner hole of the stator to remove paint through several air outlets 411.

[0024] Furthermore, both the loading conveyor line 35 and the unloading conveyor line 37 are equipped with screw-driving machines 9. The screw-driving machine 9 on the loading conveyor line 35 is used to tighten screws, and the screw-driving machine 9 on the unloading conveyor line 37 is used to loosen screws. The unloading conveyor line 37 is also equipped with a cooling box 371, which is equipped with several fans 372 that cool the stator. A transfer frame 351 is also installed between the conveyor frames 31 of the loading conveyor line 35 and the unloading conveyor line 36, and several guide bearings 352 are installed on the transfer frame 351. A push cylinder 353 for pushing the pallet is also installed on the conveyor frame 31. The screwdriver 9 is used to tighten and loosen the screws that fix the fixed baffle 107 and the fixed seat 101. The fan 372 on the feeding conveyor line 37 is used to further cool the stator after it has been dried during the transmission process; A transfer frame 351 is also installed between the conveyor frame 31 of the loading conveyor line 35 and the unloading conveyor line 37. The transfer frame 351 is used to transfer the pallet. During the transfer, the pallet 10 is pushed along the guide bearing 352 by the push cylinder 353.

[0025] Furthermore, the unloading mechanism 7 includes a transfer section 701 and an unloading section 702. Both the transfer section 701 and the unloading section 702 include an unloading frame 71, a transverse guide rail 72 mounted on the unloading frame 71, a transverse moving frame 73 slidably mounted on the transverse guide rail 72, a transfer cylinder 74 mounted on the transverse moving frame 73, an unloading manipulator 75 mounted on the transfer cylinder 74, and a drive motor 76 mounted on the unloading frame 71 for driving the transverse moving frame 73 to move. The unloading mechanism also includes an unloading track 61 mounted on the conveyor frame 31 and the processing mechanism 2. The unloading track 6 is equipped with several bearings 12 for improving the smoothness of the stator movement, a blocking cylinder 13 mounted on the unloading track 6 for restricting and blocking the stator movement to the unloading position, an unloading cylinder 62 mounted on the unloading track 6 for unloading the stator, and an unloading frame 63 mounted on the unloading cylinder 62. After the stator is processed, it moves to the unloading position. The unloading cylinder 62 is activated, which lifts the unloading frame 63 upward, causing the pallet 10 to be lifted upward. The pallet 10 holds the stator in place, and then the robot arm 25 is released. The unloading cylinder 62 then resets, causing the stator to descend until it falls onto the unloading track 61. It then moves along the unloading track 61 until it is blocked by the blocking cylinder 13. The drive motor 76 drives the transverse moving frame 73, and the transfer cylinder 74 drives the transfer robot arm 75 to grab the stator and move it onto the pallet 10 on the chain 34 of the conveyor frame 31 for output.

[0026] Furthermore, the drying device 8 includes an oven 81 and a conveying device 82 installed inside the oven 81 for conveying the stator; the oven 81 is provided with a partition 83, which divides it into a drying layer 84 and a cooling layer 85. A heating device 841 is installed in the drying layer 84, and a fan 372 is installed in the cooling layer 85; the conveying device 82 includes a drive sprocket 821 and a driven sprocket 822 installed on the oven 81, a conveying chain 823 installed on the drive sprocket 821 and the driven sprocket 822, and a drying motor 824 installed on the oven 81 for driving the drive sprocket 821 to rotate; a fixing seat 101 for mounting the stator is installed on the tray 10, and a support rod 103 for fixing the fixing seat 101 is installed on the conveying chain 823; During drying, the stator is mounted on the support rod 103 on the conveyor chain 823 by the robot 801, and then moves in the oven 81 by the conveyor chain 823. When it is in the drying layer 84, it is dried by the heat generated by the heating device 841. When it moves to the cooling layer 85 along the driven sprocket 822, the stator is cooled by the fan 372. When it moves to the unloading station, the stator is removed by the robot 801 and placed on the tray 10 of the unloading conveyor line 37 for unloading.

[0027] Furthermore, an elastic retaining bead 104 is installed on the support rod 103, and the fixing seat 101 is provided with a mounting hole 105 adapted to the support rod 103, and a retaining groove 106 adapted to the elastic retaining bead 104 is provided in the mounting hole 105; the fixing seat 101 is also provided with a fixing baffle 107 that fixes the stator on the fixing seat 101 and blocks the threaded hole on the stator to prevent paint from entering the threaded hole; the fixing seat 101 is used to install the stator on the support rod 103, and through The snap-fit ​​between the elastic ball and the slot is used to snap the fixed seat 101 onto the support rod 103. A spring is installed behind the elastic ball. When the elastic ball is compressed, it squeezes the spring, causing the spring to contract inward. When it moves to the slot, the spring's restoring force drives the elastic ball to lock into the slot. The elastic ball, with its spherical surface, facilitates its movement into and out of the slot. The fixed baffle 107 is used to block the threaded holes on the stator, preventing paint from flowing into and clogging the threaded holes.

[0028] The working process of this invention: First, the stator is arranged on the feeding slide of the feeding rack 11, i.e., on several bearings 12, by the operator or mechanical equipment. The stator at the front end is in the feeding position. After the lead wire assembly is flipped by the flipping plate 16 driven by the flipping cylinder 15, the feeding cylinder 17 is started, which lifts the feeding rack 18. The feeding rack 18 lifts the stator to the set position. Then, the robot arm 25 picks up the stator. Then, the main motor 24 drives the worktable 23 to rotate one station, so that the stator rotates to the first dipping position. Then, the PLC controls the dipping cylinder 212 to lift the dipping tank 29. After the stator is immersed in the dipping tank 29, the lifting cylinder 218 is started. The lifting cylinder 218 drives the lifting frame 219 to move downward, so that the positioning on the rotating part 221 is... After block 223 is inserted into the positioning groove 222 on the transmission component 27, the rotary motor 220 is started. The rotary motor 220 drives the rotating component 221 to rotate. The rotating component 221 drives the transmission component 27 to rotate through the cooperation of the positioning block 223 and the positioning groove 222. The transmission component 27 drives the robot arm 25 to rotate through the meshing connection of the gear 26, thereby driving the stator to rotate for rotary immersion coating. After the single-station processing time is reached, the immersion coating cylinder 212 is reset, and the worktable 23 continues to rotate one station. The next robot arm 25 picks up a new stator and moves it to the first immersion coating station. The stator that has completed one immersion coating moves to the second immersion coating station. Then, the same immersion coating tank 29 rises, the stator rotates for rotary immersion coating, and is reset after completion. The main motor 24 drives the worktable 23 to continue rotating, and the stator that has completed the second dip painting moves to the painting station. The residual paint on the stator drips into the paint tray under its own gravity and then flows back to the paint bucket 22. When the above-mentioned processing mechanism 2 is working, the main motor 24 drives the worktable 23 to rotate in an indexing manner. Each rotation is one station. The working time of each station is set in advance to be consistent, that is, the working time of each station is the same. The working time required for processes such as paint removal, end face paint removal, and paint spraying is short. However, if the paint immersion time is short, the phenomenon of incomplete paint immersion is likely to occur. Therefore, there are two paint immersion stations. Each stator completes two paint immersion operations, thereby ensuring the completeness of stator paint immersion. After the set time is reached, the worktable 23 rotates again, the stator moves to the spin-drying station, the spin-drying cylinder 213 lifts the spin-drying protective tank 211, and then the lifting cylinder 218 of the rotating mechanism 28 descends to complete the cooperation between the rotating mechanism 28 and the transmission component 27, thereby driving the stator to rotate and completing the centrifugal paint spin-drying work. The spun-off paint flows down the spin-drying protective tank 211 back to the paint tank 22 for reuse; after spin-drying is completed, the system is reset. Then the worktable 23 continues to rotate, driving the stator to the end face paint removal station. The lifting cylinder 53 drives the motor 3 54 and the felt 55 to move upward until the felt 55 is in contact with the end face of the stator. Then the motor 3 54 is started, and the motor 3 54 drives the felt 55 to rotate. At the same time, the rotating mechanism 28 drives the stator to rotate, and the paint is removed from the end face of the stator. After completion, it is reset. Then, the worktable 23 continues to rotate, moving the stator to the unloading station. Then, the unloading cylinder 62 is activated, lifting the unloading frame 63 upward, which in turn lifts the pallet 10 upward. After the pallet 10 holds the stator, the robot arm 25 is released. Then, the unloading cylinder 62 resets, causing the stator to descend until it falls onto the unloading track 61. Then, it moves along the unloading track 61 until it is blocked by the blocking cylinder 13. Then, the horizontal drive 76 drives the horizontal moving frame 73, and the transfer cylinder 74 drives the transfer robot arm 75 to grab the stator and move it to the pallet 10 on the chain 34 of the conveyor frame 31. The output is then placed on the pallet 10 by the robot arm 25. Then, the pallet 10 and the stator are moved by the conveyor line 3. During the movement, the conveyor motor 32 drives the sprocket 33 to rotate, and the sprocket 33 drives the chain 34 to move, thus moving the pallet 10 and the stator. When the stator moves to the air blowing and paint removal station with the tray 10, the air blowing motor 42 is started by the PLC control. The air blowing motor 42 drives the lead screw 43 to rotate. The lead screw 43 drives the moving frame 46 to move downward through the cooperation with the nut seat 45. The moving frame 46 drives the protective cover 49 to move downward. While the protective cover 49 moves downward to cover the coil, air is supplied to the air blowing pipe 47 through the air source. The air blowing nozzle 410 blows air into the inner hole of the stator to remove paint through several air outlets 411. After the air blowing and paint removal is completed, the stator is reset. The stator and the tray 10 continue to move with the chain. When it moves to the manual control station, the operator installs the fixed baffle 107 on the stator and the fixed seat 101, puts the screw into the screw hole, and continues to move. When the machine moves to the screw-driving machine 9, the PLC controller stops the movement, and the screw-driving machine 9 begins its operation. After tightening the screws, the stator and the fixed baffle 107 are fixedly installed on the fixed base 101. Then, the PLC controller controls the feeding conveyor 35 to continue operating. When the stator moves to the feeding position, it stops. The robot 801 clamps the stator and the fixed base 101 and installs them on the support rod 103. The stator moves with the conveyor chain 823 to the drying layer 84 for drying. The heating device in the drying layer 84... 841 can be heated by electric heating wire; then the stator tray 10 is taken away and pushed along the guide bearing 352 to the unloading conveyor line 37 by the push cylinder 353. The robot 801 takes the stator that is in the unloading position of the conveyor chain 823 and has completed drying and preliminary cooling and places it in the tray 10 above the unloading conveyor line 37. Then the unloading conveyor line 37 is started to move the tray 10 and the stator. While moving, the stator is further cooled by the fan 372 on the unloading conveyor line 37. When the stator moves to the screw-driving machine 9 of the feeding conveyor line 37, it stops moving. The screw-driving machine 9 loosens the screws of the mounting plate 107. Then the feeding conveyor line 37 continues to move, driving the stator to the manual operation station. The operator then removes the screws and the mounting plate 107. After the stator moves to the unloading station of the unloading conveyor line 37, the unloading mechanism 6 is started. The transfer cylinder 74 drives the unloading robot 75 to move downward and clamp the stator. Then, the drive motor 76 is started to drive the transverse moving frame 73 and the stator to move along the transverse guide rail 72. When the stator moves to the conveyor belt 364 of the unloading conveyor 361, the unloading robot 75 releases the stator, places the stator on the conveyor belt 364 and resets. Then, the roller motor 363 is started, and the roller motor 363 drives the stator to move and transport it to the next process or to the unloading and packing station. The pallet 10, located at the unloading station of the unloading conveyor line 37, is pushed along the guide bearing 352 by the cylinder 353 to the loading conveyor line 35 to wait for the stator to be loaded. After the stator is loaded, the dimensional cycle is carried out.

[0029] The scope of protection of this invention is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this invention.

Claims

1. A motor stator impregnation production line, comprising an impregnation device for impregnating the stator, a conveyor line for conveying and transferring the stator, a drying device for drying the stator, a robot for loading and unloading the stator between the conveyor line and the drying device, and a PLC controller for controlling the impregnation device, the conveyor line, the drying device, and the robot to automatically process the stator, wherein a tray for holding the stator is placed on the conveyor line; characterized in that... The impregnation device includes a feeding mechanism for feeding the stator, a processing mechanism for impregnating, coating, spin-drying, and removing paint from the end faces of the stator, and an air-blowing mechanism installed on the conveyor line for removing paint from the inner bore of the stator. The processing mechanism includes a frame, a paint tank, a worktable movably mounted on the frame, a main motor mounted on the frame for controlling the indexing rotation of the worktable, several robotic arms mounted on the worktable, gears mounted on the robotic arms, a transmission component mounted on the worktable and meshing with the gears to drive the robotic arms to rotate, a rotating mechanism mounted on the frame, and a mechanism mounted on the frame that can move up and down and is connected to... The system includes a paint tank connected by a pipeline to an impregnation tank, a paint tray mounted on the frame to collect excess paint from the stator and return it to the paint tank, a spin-drying protective tank mounted on the frame to protect the stator during spin-drying and capable of vertical movement, and an end-face paint removal mechanism mounted on the frame for removing paint from the stator's end faces. The end-face paint removal mechanism includes a second motor mounted on the frame, a tilting frame connected to the second motor, a lifting cylinder mounted on the tilting frame, a third motor mounted on the lifting cylinder, a felt pad mounted on the third motor, a water tank mounted on the frame, and a pressing frame mounted on the frame for squeezing the felt pad. The rotating mechanism includes a lifting cylinder mounted on the frame, a lifting frame slidably mounted on the frame and connected to the lifting cylinder, a rotary motor mounted on the lifting frame, and a rotating component movably mounted on the lifting frame and connected to the rotary motor for transmission. The transmission component is provided with a positioning groove, and the rotating component is provided with a positioning block adapted to the positioning groove. The rotating component drives the transmission component to rotate through the cooperation of the positioning block and the positioning groove.

2. The impregnation production line for an electric motor stator according to claim 1, characterized in that: The feeding mechanism includes an inclined feeding frame for automatically conveying the stator to the feeding position, several bearings mounted on the feeding frame to improve the smooth movement of the stator, a blocking cylinder mounted on the feeding frame to restrict and block the movement of the stator to the feeding position, a guide frame mounted on one side of the feeding frame to guide the enameled wire on the stator, a flipping cylinder mounted on the feeding frame, and a flipping plate mounted on the flipping cylinder at the tail end of the guide frame to flip the lead wire; the processing mechanism is equipped with a feeding cylinder for lifting the stator for feeding and a lifting frame mounted on the feeding cylinder at the corresponding position of the feeding frame.

3. The impregnation production line for an electric motor stator according to claim 1, characterized in that: The frame is equipped with an impregnation cylinder for moving the impregnation tank up and down, and a spin-drying cylinder for moving the spin-drying protective tank up and down; the paint tank is also equipped with a stirring motor, which is driven by a stirring shaft with stirring blades on it; a level gauge is installed inside the impregnation tank.

4. The impregnation production line for an electric motor stator according to claim 1, characterized in that: The conveyor line is divided into a loading conveyor line for conveying the dipped stators to the drying device, a unloading conveyor, an unloading conveyor line for conveying the dried stators to the unloading conveyor, and an unloading mechanism for transferring the stators on the unloading conveyor line to the unloading conveyor. Both the loading and unloading conveyor lines include a conveyor frame, a conveyor motor mounted on the conveyor frame, and a sprocket movably mounted on the conveyor frame and driven by the conveyor motor. The sprocket is equipped with a chain for moving the pallet. The unloading conveyor includes an unloading conveyor frame, a roller motor mounted on the unloading conveyor frame, and a conveyor belt mounted on the roller motor. The air blowing mechanism is installed on the loading conveyor line.

5. The impregnation production line for an electric motor stator according to claim 4, characterized in that: The air blowing mechanism includes an air blowing bracket mounted on a conveyor frame, an air blowing motor mounted on the air blowing bracket, a lead screw movably mounted on the air blowing bracket and driven by the air blowing motor, a slide rail mounted on the air blowing bracket, a nut seat movably connected to the lead screw, a movable frame slidably mounted on the slide rail and fixedly connected to the nut seat, an air blowing pipe mounted on the movable frame, a guide rod mounted on the movable frame, and a protective cover mounted on the guide rod; one end of the air blowing pipe is inside the protective cover, and an air blowing nozzle is installed at the end of the air blowing pipe inside the protective cover, and a plurality of air outlet holes are arranged in an array along the axis of the air blowing nozzle.

6. The impregnation production line for an electric motor stator according to claim 4, characterized in that: Both the feeding and unloading conveyor lines are equipped with screw-driving machines. The screw-driving machine on the feeding conveyor line is used to tighten screws, while the screw-driving machine on the unloading conveyor line is used to loosen screws. A cooling box is also installed on the unloading conveyor line, and several fans are installed on the cooling box to cool the stators. A transfer frame is also installed between the conveyor frames of the feeding and unloading conveyor lines, and several guide bearings are installed on the transfer frame. A push cylinder for pushing the pallet is also installed on the conveyor frame.

7. The impregnation production line for an electric motor stator according to claim 4, characterized in that: The unloading mechanism includes a transfer section and an unloading section. Both the transfer section and the unloading section include an unloading frame, a transverse guide rail mounted on the unloading frame, a transverse moving frame slidably mounted on the transverse guide rail, a transfer cylinder mounted on the transverse moving frame, an unloading manipulator mounted on the transfer cylinder, and a drive motor mounted on the unloading frame for driving the transverse moving frame to move. The unloading mechanism also includes an unloading track mounted on the conveyor frame and the processing mechanism. The unloading track is equipped with several bearings to improve the smoothness of the stator movement, a blocking cylinder mounted on the unloading track to restrict and block the stator from moving to the unloading position, an unloading cylinder mounted on the unloading track for unloading the stator, and an unloading frame mounted on the unloading cylinder.

8. The impregnation production line for a motor stator according to claim 1, characterized in that: The drying device includes an oven and a conveying device installed inside the oven for conveying the stator; the oven is equipped with a partition, which divides it into a drying layer and a cooling layer. A heating device is installed in the drying layer, and a fan is installed in the cooling layer; the conveying device includes a drive sprocket, a driven sprocket, a conveying chain installed on the drive sprocket and the driven sprocket, and a drying motor installed on the oven for driving the drive sprocket to rotate; a mounting base for mounting the stator is installed on the tray, and a support rod for fixing the mounting base is installed on the conveying chain.

9. The impregnation production line for an electric motor stator according to claim 8, characterized in that: The support rod is equipped with an elastic retaining bead, and the fixing seat is provided with a mounting hole adapted to the support rod, and a retaining groove adapted to the elastic retaining bead is provided in the mounting hole; the fixing seat is also equipped with a fixing baffle that fixes the stator on the fixing seat and blocks the threaded hole on the stator to prevent paint from entering the threaded hole.

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