Oil film coating system for stator

Abstract

The oil film coating system comprises a supporting frame and a PLC control module, a workbench is arranged at the top of the supporting frame, a bearing assembly is arranged on the left side of the workbench, and a roller coating assembly is installed on the right side of the workbench; the roller coating assembly is connected with a horizontal moving assembly arranged on the right side of the workbench. A supporting bottom plate is installed at the bottom of the supporting frame, an oil storage tank is installed on the supporting bottom plate and connected with an oil well pump, and the oil well pump is connected with a roller coating assembly through an oil pipe. According to the anti-rust oil coating device, the bearing assembly is arranged to support the stator to be coated and drive the stator to rotate, so that contact with the surface of the stator during coating of anti-rust oil can be avoided, uniform contact with the coating rollers in the rotating process of the stator can be guaranteed, and the coating uniformity of the anti-rust oil is guaranteed; and the inner peripheral side wall and the outer peripheral side wall of the stator can be coated with anti-rust oil at the same time, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stator production equipment, and particularly relates to an oil film coating system for a stator. Background Art

[0002] The stator core is an important component of a driving motor and is widely used in the field of new energy vehicle manufacturing. It is an indispensable part of an electric vehicle. In order to improve the service life of the stator, it is necessary to apply an anti-rust oil coating to the stator to avoid corrosion and rust on the surfaces of the stator and rotor, thereby ensuring the quality of the stator and rotor products and the normal operation of the motor.

[0003] The stator core is formed by stacking and connecting stator laminations stamped from silicon steel coils. The thickness of a single lamination is between 0.2 mm and 0.25 mm. Therefore, the edges of structures such as keyways and small teeth on the inner and outer peripheral sidewalls of the stator are relatively sharp. Most of the existing anti-rust oil coating processes are manually operated. The operator holds an oil-dipped felt or a coating roller to apply anti-rust oil to the inner and outer peripheral sidewalls of the stator. The coating efficiency is low, and the coating effect is not very satisfactory. The main reasons include the following two aspects: 1) Since coating materials such as felt will be snagged by the relatively sharp structures on the inner and outer walls of the stator, foreign substances will remain on the inner and outer walls of the stator, affecting the production quality of the stator; 2) Since there is a certain subjective judgment during the coating by the operator, the final anti-rust oil coating is not uniform, and there is even a phenomenon that too much anti-rust oil accumulates in a certain structure, affecting the quality of the stator oil film coating; 3) During the stator coating process, the stator is usually held manually by the operator to complete the application of the anti-rust oil. Inevitably, certain impurities will remain on the stator surface during the contact with the stator, affecting the coating effect of the anti-rust oil on the stator surface.

[0004] Therefore, due to the low efficiency, large workload, and unguaranteed quality of the existing manual anti-rust oil coating method for the stator core, a better device is needed to implement the anti-rust oil coating work for the stator core. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an oil film coating system for a stator, which can achieve uniform coating of anti-rust oil on the inner and outer walls of the stator and avoid impurities remaining on the inner and outer walls of the stator during the coating process, affecting the production quality of the stator.

[0006] To solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0007] An oil film coating system for a stator, comprising a support frame and a PLC control module. A workbench is arranged at the top of the support frame. A bearing assembly for installing the stator to be coated is arranged on the left side of the workbench. A roller coating assembly for applying antirust oil to the inner and outer sides of the stator to be coated is installed on the right side of the workbench. The roller coating assembly is connected to a horizontal movement assembly arranged on the right side of the workbench. A support base plate is installed at the bottom of the support frame, and an oil storage tank is installed on the support base plate. The oil storage tank is connected to an oil pump, and the oil pump is connected to the roller coating assembly through an oil pipe. The controlled ends of the oil pump, the roller coating assembly, and the horizontal movement assembly are respectively connected to the output end of the PLC control module. Four corners at the bottom of the support frame are installed with moving wheels through bolts.

[0008] In the above-mentioned oil film coating system for a stator, the bearing assembly includes a rotating mechanism installed on the workbench and a bearing mechanism connected to the rotating mechanism.

[0009] In the above-mentioned oil film coating system for a stator, the rotating mechanism includes a rotating base plate installed on the workbench. A countersunk hole is also provided at the center of the rotating base plate. A rotating shaft is installed in the countersunk hole, and a thrust ball bearing matched with the rotating shaft is also installed in the countersunk hole. The top of the rotating shaft is connected to a roller support seat.

[0010] In the above-mentioned oil film coating system for a stator, the bearing mechanism includes roller rod side brackets respectively arranged on the left and right sides of the roller support seat. An inverted trapezoidal groove for ensuring that the roller coating assembly passes through the circumferential side of the stator to be coated is formed in the middle of the roller rod side brackets. The front tops of the roller rod side brackets are connected by a manual roller support wheel. A silica gel roller for supporting the stator to be coated and driving the stator to be coated to rotate by using the friction force with the stator to be coated is installed on the manual roller support wheel located between the two roller rod side brackets. The rear tops of the roller rod side brackets are connected by a load-bearing roller support wheel. A load-bearing roller for supporting the stator to be coated and assisting the stator to be coated to rotate is rotatably installed on the load-bearing roller support wheel located between the two roller rod side brackets through a bearing.

[0011] In the above-mentioned oil film coating system for a stator, the horizontal movement assembly includes an electric guide rail installed at the center of the right side of the workbench. Non-powered guide rails are respectively installed on both sides of the electric guide rail. The non-powered guide rails are slidably fitted with the roller coating assembly. It also includes a guide rail control button installed on the right side of the workbench. The guide rail control button is electrically connected to the PLC control module, and the output end of the PLC control module is connected to the controlled end of the electric guide rail.

[0012] The above-mentioned oil film coating system for a stator, wherein the roller coating assembly includes a horizontally arranged first connecting plate, and the first connecting plate is slidably fitted with an electric guide rail and a non-powered guide rail respectively; a vertically arranged second connecting plate is installed on the first connecting plate, a wide air gripper is installed on the upper left side of the second connecting plate, and a wide jaw control valve connected to the air inlet pipe of the wide air gripper is installed on the upper right side of the second connecting plate. The controlled end of the wide jaw control valve is connected to the output end of the PLC control module; the wide air gripper includes two jaws arranged side by side up and down, and the jaws are respectively connected to the coating roller through air gripper roller connectors; when the wide air gripper is clamped, the upper coating roller contacts the inner peripheral side wall of the stator to be coated, and the lower coating roller contacts the outer peripheral side wall of the stator to be coated.

[0013] The above-mentioned oil film coating system for a stator, wherein the coating roller includes a roller rotating shaft, a roller oil storage box is installed on the periphery of the roller rotating shaft, oil outlet holes are evenly arranged on the outer wall of the roller oil storage box, and a roller outer attachment material for absorbing and applying the rust preventive oil discharged from the oil outlet holes to the side wall of the stator is arranged on the outer peripheral side of the roller oil storage box; the roller outer attachment material is made of polypropylene material that is not easily torn.

[0014] The above-mentioned oil film coating system for a stator, and a height adjustment mechanism for adjusting the height of the coating roller is further arranged between the roller rotating shaft and the air gripper roller connector.

[0015] The above-mentioned height adjustment mechanism includes a rotating shaft connector installed on the periphery of the right end of the rotating shaft, an open-ended movable groove is arranged at the left end of the air gripper roller connector, and the rotating shaft connector is slidably installed in the movable groove; an adjustment bolt is threadedly connected to the side wall of the air gripper roller connector, and the bottom of the adjustment bolt penetrates through the side wall of the air gripper roller connector and is connected to the rotating shaft connector.

[0016] The above-mentioned PLC control module adopts a PLC controller.

[0017] Due to the adoption of the above technical solutions, the following technical progress is achieved by the present invention.

[0018] The present invention provides an oil film coating system for a stator. By arranging a bearing assembly to support the stator to be coated and drive the stator to rotate, it can not only avoid contact with the surface of the stator when applying the rust preventive oil, but also ensure uniform contact between the stator and the coating roller during the rotation of the stator, ensuring the uniformity of the application of the rust preventive oil. At the same time, by arranging two coating rollers up and down, the inner peripheral side wall and the outer peripheral side wall of the stator can be coated with the rust preventive oil simultaneously, improving the working efficiency. Moreover, a roller outer attachment material made of polypropylene material is arranged on the outer side of the coating roller to prevent the outer attachment material from being torn by the sharp structure on the surface of the stator during the coating process, resulting in a part of the outer attachment material remaining on the surface of the stator and affecting the production quality of the stator.

[0019] The present invention also provides a height adjustment mechanism for adjusting the height of the coating roller, enabling the equipment to be applicable to the anti-rust oil coating of stators of different sizes, avoiding the frequent replacement of coating rollers of different sizes to adapt to the stator size, reducing the production cost, and at the same time, cooperating with the automation control of the horizontal movement component and the PLC control module, greatly improving the efficiency and quality of the anti-rust oil coating of stators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the specific structure of the present invention; Figure 2 is a schematic diagram of the specific structure of the support component of the present invention; Figure 3 is a cross-sectional view of the support component of the present invention; Figure 4 is a schematic diagram of the specific structure of the roller coating component of the present invention; Figure 5 is a schematic diagram of the specific structure of the coating roller of the present invention.

[0021] Among them: 1. Support frame, 2. Workbench, 4. Stator to be coated, 7. Oil pumping pump, 8. Oil storage tank, 9. Support bottom plate, 10. Moving wheels; Carrying component, 310. Rotating bottom plate, 311. Roller support seat, 312. Rotating shaft, 313. Thrust ball bearing; 320. Side bracket of roller rod, 321. Fixing part of side bracket of roller rod, 322. Bearing roller for load-bearing roller, 323. Load-bearing roller, 324. Manual roller for load-bearing roller, 325. Silicone roller, 326. First double-row angular contact ball bearing, 327. Second double-row angular contact ball bearing, 328. Rotating handle, 329. Inverted trapezoidal groove; 5. Horizontal movement component, 51. Electric slide rail, 52. Unpowered guide rail, 53. Guide rail control button; 6. Roller coating component, 61. First connecting plate, 62. Second connecting plate, 63. Oil collecting box, 64. Metal part, 65. Wide type air gripper control valve, 66. Wide type air gripper, 67. Claw; 68. Air gripper-roller connecting piece, 680. Activity groove, 681. Shaft connecting piece, 682. Adjusting bolt; 69. Coating roller, 690. Roller shaft, 691. Roller oil storage box, 692. Outer attached material of roller, 693. First deep groove ball bearing, 694. Second deep groove ball bearing, 695. Roller shaft fastener, 696. Oil outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0023] An oil film coating system for a stator, as Figures 1 to 5 shown, includes a support frame 1 and a PLC control module. A workbench 2 is arranged at the top of the support frame 1. A loading component 3 for installing the stator 4 to be coated is arranged on the left side of the workbench 2. A roller coating component 6 for coating the inner and outer sides of the stator 4 to be coated is installed on the right side of the workbench 2. The roller coating component 6 is connected to a horizontal moving component 5 arranged on the right side of the workbench 2.

[0024] A support bottom plate 9 is installed at the bottom of the support frame 1. An oil storage tank 8 is installed on the support bottom plate 9. The oil storage tank 8 is connected to an oil pump 7. The controlled end of the oil pump 7 is connected to the output end of the PLC control module.

[0025] The oil pump 7 is connected to the roller coating component 6 through an oil pipe. The oil storage tank 8 and the oil pump 6 supply oil to the roller coating component, thereby completing the anti-rust oil coating work on the surface of the stator.

[0026] The whole support frame 1 adopts a profile structure. Four corners at the bottom of the support frame 1 are installed with moving wheels 10 through bolts, which is convenient for moving the equipment.

[0027] The loading component 3 includes a rotating mechanism installed on the workbench 2 and a loading mechanism connected to the rotating mechanism. The rotating mechanism includes a rotating bottom plate 310 installed on the workbench 2. A counterbore is also arranged at the center of the rotating bottom plate 310. A rotating shaft 312 is installed in the counterbore. A thrust ball bearing 313 matched with the rotating shaft 312 is also installed in the counterbore. The top of the rotating shaft 312 is connected to a roller support seat 311.

[0028] The rotating shaft 312 can be connected to a motor, and the PLC control module is used to control the rotating shaft to drive the loading mechanism to rotate. It can also be manually operated, and the rotation of the loading mechanism is realized through the cooperation of the rotating shaft 312 and the thrust ball bearing.

[0029] The loading mechanism includes roller rod side brackets 320 respectively arranged on the left and right sides of the roller support seat 311. An inverted trapezoidal groove 329 is opened in the middle of the roller rod side brackets 320 to ensure that the roller coating component 6 passes through the circumferential side of the stator 4 to be coated so as to complete the coating of the anti-rust oil.

[0030] A roller rod side bracket fixing part 321 is arranged between the corresponding sides of the two roller rod side brackets 320. The roller rod side bracket fixing part 321 is in an "O" shape structure and can play a certain supporting role.

[0031] The front top of the side bracket 320 of the roller rod is connected by a manual roller supporting wheel 324. A silica gel roller 325 is installed on the manual roller supporting wheel 324 located between the two side brackets 320 of the roller rod, which is used to support the stator 4 to be coated. At the same time, when the manual roller supporting wheel 324 rotates, the frictional force between the silica gel roller 325 and the stator 4 to be coated can drive the stator to be coated to rotate, so as to complete the uniform coating of the antirust oil on the surface of the stator.

[0032] The right end of the manual roller supporting wheel 324 extending out of the right side bracket 320 of the roller rod is threadedly connected with the supporting wheel fixing part to prevent the manual roller supporting wheel 324 from moving to the right. A protrusion for preventing the manual roller supporting wheel 324 from moving to the left is provided on the manual roller supporting wheel 324 extending out of the left side bracket 320 of the roller rod.

[0033] The left end of the manual roller supporting wheel 324 is a Z-shaped bending structure, and a rotating handle 328 is provided at the left end of the manual roller supporting wheel 324, which is convenient for rotating the manual roller supporting wheel 324 and driving the stator 4 to be coated to rotate through the silica gel roller 325.

[0034] A through hole is opened at the front top of the side bracket 320 of the roller rod. A first double-row angular contact ball bearing 326 is installed in the through hole at the front end of the left side bracket 320 of the roller rod, and a second double-row angular contact ball bearing 327 is installed in the through hole at the front end of the right side bracket 320 of the roller rod.

[0035] The rear tops of the side brackets 320 of the roller rod are connected by a load-bearing roller supporting wheel 322. A load-bearing roller 323 is rotatably installed on the load-bearing roller supporting wheel 322 located between the two side brackets 320 of the roller rod, which is used to support the stator 4 to be coated and assist the stator 4 to be coated to rotate.

[0036] The horizontal movement component 5 includes an electric guide rail 51 installed at the center of the right side of the workbench 2. Non-powered guide rails 52 are respectively installed on both sides of the electric guide rail 51. The non-powered guide rails 52 are slidably fitted with the roller coating component 6 to stably support the roller coating component 6.

[0037] A guide rail control button 53 is also installed on the right side of the workbench 2. The guide rail control button 53 is electrically connected to the PLC control module. The output end of the PLC control module is connected to the controlled end of the electric guide rail 51. The guide rail control button 53 sends an electrical signal to the PLC control module. After receiving the signal, the PLC control module controls the electric guide rail 51 to move forward or backward, and further controls the forward and backward movement of the roller coating component 6.

[0038] The roller coating assembly 6 includes a horizontally arranged first connecting plate 61, which is slidably fitted with the electric guide rail 51 and the unpowered guide rail 52. A vertically arranged second connecting plate 62 is installed on the first connecting plate 61. An oil collecting box 63 is installed on the left side of the second connecting plate 62, and a wide air gripper 66 is installed on the upper left side of the second connecting plate 62. The wide air gripper 66 includes two clamping claws 67 arranged side by side up and down. The clamping claws 67 are respectively connected to the coating roller 69 through the air gripper roller connecting piece 68. The upper coating roller is used for coating the inner peripheral side wall of the stator 4 to be coated with an oil film, and the lower coating roller 69 is used for coating the outer peripheral side wall of the stator 4 to be coated with an oil film.

[0039] A groove is provided at the bottom of the second connecting plate 62. The right side of the oil collecting box 63 is connected to the second connecting plate 62 through a metal connecting piece passing through the groove, which is convenient for the disassembly and replacement of the oil collecting box 63.

[0040] A wide air gripper control valve 65 is installed on the upper right side of the second connecting plate 62. The controlled end of the wide air gripper control valve 65 is connected to the output end of the PLC control module. The wide air gripper control valve 65 is connected to the air inlet pipe of the wide air gripper 66. By controlling the switch of the wide air gripper control valve 65 through the PLC control module, the air pressure change inside the wide air gripper 66 is controlled, so as to realize the clamping and releasing of the clamping claws 67.

[0041] The coating roller 69 includes a roller rotating shaft 690. A roller oil storage box 691 is installed on the peripheral side of the roller rotating shaft 690. Oil outlet holes 696 are uniformly arranged on the outer wall of the roller oil storage box 691. A roller outer attached material 692 is arranged on the outer peripheral side of the roller oil storage box 691, which can absorb the oil flowing out of the oil outlet holes 696 and smear it on the inner peripheral side wall and the outer peripheral side wall of the stator 4 to be coated.

[0042] The roller outer attached material 692 is made of polypropylene material to ensure that the roller outer attached material will not be hooked and damaged by the sharp structures on the surfaces of the inner peripheral side wall and the outer peripheral side wall of the stator during the coating process, resulting in a part of the roller outer attached material remaining on the stator surface and affecting the quality of the stator.

[0043] Inner grooves are respectively provided at both ends of the roller oil storage box 691. A first deep groove ball bearing 693 rotatably fitted with the roller rotating shaft 690 is installed in the inner groove at the right end of the roller oil storage box 691. A shoulder for restricting the movement of the roller rotating shaft 690 is provided on the roller rotating shaft 690 on the right side of the first deep groove ball bearing 693.

[0044] A second deep groove ball bearing 694 rotatably fitted with the roller rotating shaft 690 is installed in the inner groove at the left end of the roller oil storage box 691. The roller rotating shaft 690 on the left side of the first deep groove ball bearing 694 is connected to the roller rotating shaft fastener 695, thereby restricting the rightward movement of the roller rotating shaft 690.

[0045] A height adjustment mechanism for adjusting the height of the coating roller 69 is also provided between the roller shaft 690 and the air gripper roller connecting member 68.

[0046] The height adjustment mechanism includes a rotating shaft connecting member 681 installed on the circumferential side of the right end of the rotating shaft 690. An open-ended movable groove 680 is provided at the left end of the air gripper roller connecting member 68, and the rotating shaft connecting member 681 is slidably installed in the movable groove 680.

[0047] The side wall of the air gripper roller connecting member 68 is threadedly connected with an adjusting bolt 682. The bottom of the adjusting bolt 682 penetrates the side wall of the air gripper roller connecting member 68 and is connected to the rotating shaft connecting member 681. By rotating the adjusting bolt, the position of the roller shaft 690 is adjusted, and thus the height of the coating roller 69 is adjusted to adapt to stators of different sizes.

[0048] The PLC control module in this application is controlled by a PLC controller. The circuit connection relationship between the PLC controller, the wide air gripper control valve 65, the electric guide rail 51, and the oil pump 7 is a common circuit connection relationship, which will not be described in detail here.

[0049] During use, first place the stator 4 to be coated on the bearing assembly 3, and rotate the bearing assembly 3 and the stator 4 to be coated so that the stator 4 to be coated is axially parallel to the coating roller 69.

[0050] Secondly, adjust the positions of the upper coating roller shaft 69 and the lower coating roller shaft 69 according to the inner diameter and outer diameter dimensions of the stator 4 to be coated, ensuring that when the wide air gripper 66 drives the clamping jaw 67 to clamp, the upper coating roller shaft 69 can contact the inner circumferential side wall of the stator, and the lower coating roller shaft 69 can contact the outer circumferential side wall of the stator.

[0051] Then, press the guide rail control button 53 to control the electric guide rail 51 to move the roller coating assembly 6 to the left, so that the upper coating roller shaft 69 passes through the inside of the stator 4 to be coated, and the lower coating roller shaft 69 is located below the stator 4 to be coated, and ensure that the coating roller shaft 69 covers the length of the stator 4 to be coated.

[0052] After that, control the wide air gripper to clamp, so that the upper coating roller shaft 69 contacts the inner circumferential side wall of the stator, and the lower coating roller shaft 69 contacts the outer circumferential side wall of the stator.

[0053] Finally, manually rotate the rotating handle 328 to make the silicone roller 325 rotate. Since there is a certain frictional force between the silicone roller 325 and the outer wall of the stator 4 to be coated, the stator to be coated rotates under the action of the frictional force. At the same time, the oil storage box inside the coating roller 69 leaks oil outward and wets the roller outer attached material 692 on the surface, and the stator surface is oiled through the roller outer attached material soaked with rust preventive oil to ensure uniform coating of rust preventive oil on the stator surface.

[0054] After the oiling is completed, release the clamping of the wide gripper, move the roller coating assembly to the right, and remove the stator after the oil film on the stator surface has dried and formed.

[0055] The present invention provides an oil film coating system for stators. By setting a bearing assembly to support the stator to be coated and drive the stator to rotate, it can not only avoid contact with the stator surface when applying anti-rust oil, but also ensure uniform contact between the stator and the coating roller during rotation, ensuring the uniformity of anti-rust oil application. At the same time, by setting two coating rollers, the inner and outer peripheral side walls of the stator can be coated with anti-rust oil simultaneously, improving work efficiency. Moreover, a roller outer attachment material made of polypropylene is provided on the outer side of the coating roller to prevent the outer attachment material from being torn by the sharp structure on the stator surface during the coating process, resulting in part of the outer attachment material remaining on the stator surface and affecting the production quality of the stator.

[0056] The present invention also sets a height adjustment mechanism for adjusting the height of the coating roller, making this equipment suitable for applying anti-rust oil to stators of different sizes, avoiding frequently replacing coating rollers of different sizes to adapt to the stator size, reducing production costs. At the same time, with the automation control of the horizontal movement assembly and the PLC control module, the efficiency and quality of applying anti-rust oil to stators are greatly improved.

Claims

1. An oil film coating system for a stator, characterized in that: It includes a support frame (1) and a PLC control module. A workbench (2) is arranged at the top of the support frame (1). A bearing assembly (3) for installing the stator to be coated (4) is arranged on the left side of the workbench (2). A roller coating assembly (6) for coating the inner and outer sides of the stator to be coated (4) with rust preventive oil is installed on the right side of the workbench (2); the roller coating assembly (6) is connected to a horizontal moving assembly (5) arranged on the right side of the workbench (2); a support base plate (9) is installed at the bottom of the support frame (1), an oil storage tank (8) is installed on the support base plate (9), the oil storage tank (8) is connected to an oil pump (7), and the oil pump (7) is connected to the roller coating assembly (6) through an oil pipe; the controlled ends of the oil pump (7), the roller coating assembly (6), and the horizontal moving assembly (5) are respectively connected to the output end of the PLC control module; four corners at the bottom of the support frame (1) are installed with moving wheels (10) through bolts.

2. The oil film coating system for a stator according to claim 1, characterized in that: The bearing assembly (3) includes a rotating mechanism installed on the workbench (2) and a bearing mechanism connected to the rotating mechanism.

3. A film coating system for a stator according to claim 2, characterized in that: The rotating mechanism includes a rotating base plate (310) installed on the workbench (2). A countersunk hole is also provided at the center of the rotating base plate (310). A rotating shaft (312) is installed in the countersunk hole. A thrust ball bearing (313) matching with the rotating shaft (312) is also installed in the countersunk hole. The top of the rotating shaft (312) is connected to a roller support seat (311).

4. A film coating system for a stator according to claim 3, wherein: The bearing mechanism includes roller rod side brackets (320) respectively arranged on the left and right sides of the roller support seat (311). An inverted trapezoidal groove (329) for ensuring that the roller coating assembly (6) passes through the circumferential side of the stator to be coated (4) is formed in the middle of the roller rod side brackets (320); the front tops of the roller rod side brackets (320) are connected through a manual roller carrier (324). A silica gel roller (325) for supporting the stator to be coated (4) and driving the stator to be coated to rotate by the friction force with the stator to be coated (4) is installed on the manual roller carrier (324) located between the two roller rod side brackets (320); the rear tops of the roller rod side brackets (320) are connected through a load-bearing roller carrier (322). A load-bearing roller (323) for supporting the stator to be coated (4) and assisting the stator to be coated (4) to rotate is rotatably installed on the load-bearing roller carrier (322) located between the two roller rod side brackets (320) through a bearing.

5. The oil film coating system for a stator according to claim 1, characterized in that: The horizontal moving assembly (5) includes an electric guide rail (51) installed at the center of the right side of the workbench (2). Non-powered guide rails (52) are respectively installed on both sides of the electric guide rail (51). The non-powered guide rails (52) are slidably assembled with the roller coating assembly (6); it also includes a guide rail control button (53) installed on the right side of the workbench (2). The guide rail control button (53) is electrically connected to the PLC control module, and the output end of the PLC control module is connected to the controlled end of the electric guide rail (51).

6. A film coating system for a stator according to claim 5, characterized in that: The roller coating assembly (6) includes a horizontally arranged first connecting plate (61), and the first connecting plate (61) is slidably fitted with the electric guide rail (51) and the unpowered guide rail (52) respectively; a vertically arranged second connecting plate (62) is installed on the first connecting plate (61), a wide air gripper (66) is installed on the upper left side of the second connecting plate (62), a wide jaw control valve (65) connected to the air inlet pipe of the wide air gripper (66) is installed on the upper right side of the second connecting plate (62), and the controlled end of the wide jaw control valve 65 is connected to the output end of the PLC control module; the wide air gripper (66) includes two jaws (67) arranged side by side up and down, and the jaws (67) are respectively connected to the coating roller (69) through air gripper roller connectors (68); when the wide air gripper (66) clamps, the upper coating roller contacts the inner peripheral side wall of the stator (4) to be coated, and the lower coating roller (69) contacts the outer peripheral side wall of the stator (4) to be coated.

7. The oil film coating system for a stator according to claim 6, wherein: The coating roller (69) includes a roller rotating shaft (690), a roller oil storage box (691) is installed on the peripheral side of the roller rotating shaft (690), oil outlet holes (696) are uniformly arranged on the outer wall of the roller oil storage box (691), and a roller outer attached material (692) for absorbing and applying the rust preventive oil discharged from the oil outlet holes (696) to the side wall of the stator is arranged on the outer peripheral side of the roller oil storage box (691); the roller outer attached material (692) is made of polypropylene material that is not easily torn.

8. A film coating system for a stator according to claim 7, characterized in that: A height adjustment mechanism for adjusting the height of the coating roller (69) is further arranged between the roller rotating shaft (690) and the air gripper roller connector (68).

9. A film coating system for a stator according to claim 8, characterized in that: The height adjustment mechanism includes a rotating shaft connector (681) installed on the peripheral side of the right end of the rotating shaft (690), an open-ended movable groove (680) is formed at the left end of the air gripper roller connector (68), and the rotating shaft connector (681) is slidably installed in the movable groove (680); an adjusting bolt (682) is threadedly connected to the side wall of the air gripper roller connector (68), and the bottom of the adjusting bolt (682) penetrates through the side wall of the air gripper roller connector (68) and is connected to the rotating shaft connector (681).

10. A oil film coating system for a stator according to claim 1, characterized in that: The PLC control module uses a PLC controller.

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