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 on 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, contact with the surface of the stator when anti-rust oil is coated can be avoided, it can be guaranteed that the stator makes uniform contact with the coating rollers in the rotating process, 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] This utility model relates to the field of stator production equipment technology, specifically to an oil film coating system for stators. Background Technology

[0002] The stator core is an important component of drive motors and is widely used in the manufacturing of new energy vehicles. It is an indispensable part of electric vehicles. In order to improve the life of the stator, it is necessary to coat the stator with anti-rust oil to prevent corrosion and rust on the stator and rotor surfaces, thereby ensuring the quality of the stator and rotor products and the normal operation of the motor.

[0003] The stator core is composed of stator laminations stamped from silicon steel coils, stacked and connected together. The thickness of a single layer of laminations is between 0.2mm and 0.25mm. Therefore, the edges of keyways, small teeth, and other structures on the inner and outer circumferential walls of the stator are relatively sharp. Currently, most rust-preventive oil coating processes are done manually, with operators using hand-held oil-soaked felt or coating rollers to apply rust-preventive oil to the inner and outer circumferential walls of the stator. This process is inefficient and the coating effect is not ideal. The main reasons include the following two aspects: 1) Because the coating materials such as felt are easily absorbed by the stator's internal structure... 1) Sharp edges on the outer wall can create foreign matter on the inner and outer walls of the stator, affecting the production quality of the stator; 2) Due to the subjective judgment of the operators during the coating process, the final anti-rust oil coating is not uniform, and there is even a phenomenon of excessive anti-rust oil coating accumulating in a certain area, affecting the quality of the stator oil film coating; 3) During the stator coating process, the anti-rust oil is usually applied manually by holding the stator. In the process of contacting the stator, some impurities will inevitably remain on the stator surface, affecting the coating effect of the anti-rust oil on the stator surface.

[0004] Therefore, since the existing manual methods for applying anti-rust oil to stator cores are inefficient, labor-intensive, and lack quality assurance, a better device is needed to achieve the anti-rust oil coating work for stator cores. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an oil film coating system for stators, 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, thus affecting the stator production quality.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0007] An oil film coating system for stators includes a support frame and a PLC control module. A workbench is mounted on top of the support frame. A support assembly for mounting the stator to be coated is located on the left side of the workbench, and a roller coating assembly for applying rust-preventive oil to the inner and outer sides of the stator is mounted on the right side of the workbench. The roller coating assembly is connected to a horizontal moving assembly located on the right side of the workbench. A support base plate is mounted at the bottom of the support frame, and an oil tank is mounted on the support base plate. The oil tank is connected to an oil pump, which is connected to the roller coating assembly via an oil pipe. The controlled terminals of the oil pump, the roller coating assembly, and the horizontal moving assembly are respectively connected to the output terminals of the PLC control module.

[0008] The aforementioned oil film coating system for a stator includes a support assembly comprising a rotating mechanism mounted on a worktable and a support mechanism connected to the rotating mechanism.

[0009] The aforementioned oil film coating system for stators includes a rotating mechanism comprising a rotating base plate mounted on a workbench, a countersunk hole at the center of the rotating base plate, a rotating shaft installed in the countersunk hole, a thrust ball bearing cooperating with the rotating shaft installed in the countersunk hole, and the top of the rotating shaft connected to a roller support.

[0010] The aforementioned oil film coating system for a stator includes a support mechanism comprising roller rod side supports respectively disposed on the left and right sides of a roller support base. The roller rod side supports have an inverted trapezoidal groove in the middle to ensure that the roller coating assembly passes through the periphery of the stator to be coated. The front ends of the roller rod side supports are connected by manual roller supports. A silicone roller is mounted on the manual roller support between the two roller rod side supports to support the stator to be coated and to drive the stator to be coated to rotate using friction between the support and the stator. The rear ends of the roller rod side supports are connected by load-bearing roller supports. A load-bearing roller is rotatably mounted on the load-bearing roller support between the two roller rod side supports via a bearing to support the stator to be coated and to assist in its rotation.

[0011] The aforementioned oil film coating system for a stator includes a horizontal moving component comprising an electric guide rail mounted on the center of the right side of the worktable, with unpowered guide rails mounted on both sides of the electric guide rail, the unpowered guide rails being slidably fitted with the roller coating component; it also includes a guide rail control button mounted on the right side of the worktable, the guide rail control button being electrically connected to a PLC control module, and the output end of the PLC control module being connected to the controlled end of the electric guide rail.

[0012] The aforementioned oil film coating system for a stator includes a roller coating assembly comprising a horizontally arranged first connecting plate, which is slidably fitted with an electric guide rail and a non-powered guide rail respectively; a vertically arranged second connecting plate is mounted on the first connecting plate, a wide-type pneumatic gripper is mounted on the upper left side of the second connecting plate, and a wide-type gripper control valve connected to the air inlet pipe of the wide-type pneumatic gripper is mounted on the upper right side of the second connecting plate, the controlled end of the wide-type pneumatic gripper control valve being connected to the output end of a PLC control module; the wide-type pneumatic gripper includes two grippers arranged side by side, which are connected to the coating roller via pneumatic gripper roller connectors; when the wide-type pneumatic gripper clamps, the upper coating roller contacts the inner peripheral sidewall of the stator to be coated, and the lower coating roller contacts the outer peripheral sidewall of the stator to be coated.

[0013] The aforementioned oil film coating system for a stator includes a coating roller comprising a roller shaft, an oil storage box mounted around the roller shaft, oil outlet holes evenly distributed on the outer wall of the oil storage box, and an external roller material provided on the outer periphery of the oil storage box to absorb the rust-preventive oil discharged from the oil outlet holes and apply it to the side wall of the stator; the external roller material is made of polypropylene that is not easily snagged.

[0014] In the aforementioned oil film coating system for a stator, a height adjustment mechanism for adjusting the height of the coating roller is further provided between the roller shaft and the pneumatic gripper roller connector.

[0015] The aforementioned oil film coating system for a stator includes a height adjustment mechanism comprising a shaft connector mounted on the right side of a rotating shaft, a movable groove with an open opening on the left end of the pneumatic gripper roller connector, and the shaft connector being slidably mounted within the movable groove; an adjusting bolt is threadedly connected to the side wall of the pneumatic gripper roller connector, and the bottom of the adjusting bolt penetrates the side wall of the pneumatic gripper roller connector and connects to the shaft connector.

[0016] The above-mentioned oil film coating system for stators uses a PLC controller as the PLC control module.

[0017] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0018] This invention provides an oil film coating system for stators. By setting up a support component to support the stator to be coated and drive the stator to rotate, it not only avoids contact between the rust-preventive oil and the stator surface during application, but also ensures uniform contact between the stator and the coating roller during rotation, guaranteeing the uniformity of the rust-preventive oil application. At the same time, by setting up two coating rollers, the inner and outer circumferential sidewalls of the stator can be coated with rust-preventive oil simultaneously, improving work efficiency. Furthermore, the outer side of the coating roller is provided with an external material made of polypropylene to prevent the external material from being snagged by the sharp structures on the stator surface during the coating process, thus preventing some external material from remaining on the stator surface and affecting the stator production quality.

[0019] This invention also includes a height adjustment mechanism for adjusting the height of the coating roller, making the equipment suitable for applying anti-rust oil to stators of different sizes. This avoids the need to frequently change coating rollers of different sizes to adapt to stator sizes, reducing production costs. At the same time, combined with the horizontal movement component and the automated control of the PLC control module, it greatly improves the efficiency and quality of applying anti-rust oil to stators. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the specific structure of the present utility model;

[0021] Figure 2 This is a schematic diagram of the specific structure of the support component described in this utility model;

[0022] Figure 3 This is a cross-sectional view of the support component described in this utility model;

[0023] Figure 4 This is a schematic diagram of the specific structure of the roller coating assembly described in this utility model;

[0024] Figure 5 This is a schematic diagram of the specific structure of the coating roller described in this utility model.

[0025] The components include: 1. support frame, 2. workbench, 4. stator to be coated, 7. oil pump, 8. oil storage tank, 9. support base plate, and 10. casters.

[0026] 310. Rotating base plate; 311. Roller support seat; 312. Rotating shaft; 313. Thrust ball bearing;

[0027] 320. Roller rod side bracket; 321. Roller rod side bracket fastener; 322. Load-bearing roller support roller; 323. Load-bearing roller; 324. Manual roller support 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;

[0028] 5. Horizontal movement component; 51. Electric slide rail; 52. Non-powered guide rail; 53. Guide rail control button;

[0029] 6. Roller coating assembly; 61. First connecting plate; 62. Second connecting plate; 63. Oil collection box; 64. Metal parts; 65. Wide-type pneumatic gripper control valve; 66. Wide-type pneumatic gripper; 67. Clamping jaw;

[0030] 68. Pneumatic gripper roller connector; 680. Movable groove; 681. Rotary shaft connector; 682. Adjusting bolt;

[0031] 69. Coating roller, 690. Roller shaft, 691. Roller oil reservoir, 692. Roller outer material, 693. First deep groove ball bearing, 694. Second deep groove ball bearing, 695. Roller shaft fastener, 696. Oil outlet. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] An oil film coating system for stators, such as Figures 1 to 5 As shown, the system includes a support frame 1 and a PLC control module. A workbench 2 is provided on the top of the support frame 1. A bearing assembly 3 for mounting the stator 4 to be coated is provided on the left side of the workbench 2. A roller coating assembly 6 for applying oil film to the inner and outer sides of the stator 4 to be coated is provided on the right side of the workbench 2. The roller coating assembly 6 is connected to a horizontal moving assembly 5 provided on the right side of the workbench 2.

[0034] 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 the oil pump 7. The controlled end of the oil pump 7 is connected to the output end of the PLC control module.

[0035] The oil pump 7 is connected to the roller coating assembly 6 via an oil pipe, and supplies oil to the roller coating assembly through the oil storage tank 8 and the oil pump 6, thereby completing the anti-rust oil coating work on the stator surface.

[0036] The support frame 1 is made of profile structure. The four corners of the bottom of the support frame 1 are equipped with movable wheels 10 by bolts, which facilitates the movement of the equipment.

[0037] The support assembly 3 includes a rotating mechanism mounted on the workbench 2 and a support mechanism connected to the rotating mechanism. The rotating mechanism includes a rotating base plate 310 mounted on the workbench 2. The center of the rotating base plate 310 is provided with a countersunk hole. A rotating shaft 312 is installed in the countersunk hole. A thrust ball bearing 313 that cooperates 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.

[0038] The rotating shaft 312 can be connected to a motor and controlled by a PLC control module to drive the bearing mechanism to rotate. It can also be operated manually, and the rotation of the bearing mechanism is achieved through the cooperation of the rotating shaft 312 and the thrust ball bearing.

[0039] The bearing mechanism includes roller rod side brackets 320 respectively arranged on the left and right sides of the roller support seat 311. The roller rod side brackets 320 have an inverted trapezoidal groove 329 in the middle to ensure that the roller coating assembly 6 passes through the periphery of the stator 4 to be coated in order to complete the coating of anti-rust oil.

[0040] A roller rod side bracket fixing member 321 is provided between the corresponding sides of the two roller rod side brackets 320. The roller rod side bracket fixing member 321 has a square structure and can play a certain supporting role.

[0041] The front end of the roller rod side bracket 320 is connected to the top of the manual roller support 324. A silicone roller 325 is installed on the manual roller support 324 located between the two roller rod side brackets 320 to support the stator 4 to be coated. At the same time, when the manual roller support 324 rotates, the friction between the silicone roller 325 and the stator 4 to be coated can drive the stator to be coated to rotate, thereby completing the uniform coating of anti-rust oil on the surface of the stator.

[0042] The right end of the manual roller support 324 extending from the side bracket 320 of the right roller rod is threadedly connected to the support roller fixing piece to prevent the manual roller support 324 from moving to the right. The manual roller support 324 extending from the side bracket 320 of the left roller rod is provided with a protrusion to prevent the manual roller support 324 from moving to the left.

[0043] The left end of the manual roller support 324 has a Z-shaped bending structure. The left end of the manual roller support 324 is equipped with a rotating handle 328, which makes it easy to rotate the manual roller support 324 and drive the stator 4 to be coated to rotate through the silicone roller 325.

[0044] A through hole is provided at the top of the front end of the roller rod side bracket 320. A first double-row angular contact ball bearing 326 is installed in the through hole at the front end of the left roller rod side bracket 320, and a second double-row angular contact ball bearing 327 is installed in the through hole at the front end of the right roller rod side bracket 320.

[0045] The top of the rear end of the roller rod side bracket 320 is connected by a load-bearing roller support 322. A load-bearing roller 323 is rotatably mounted on the load-bearing roller support 322 located between the two roller rod side brackets 320 via a bearing. This load-bearing roller 323 is used to support the stator 4 to be coated and assist the stator 4 to be coated in rotating.

[0046] The horizontal moving component 5 includes an electric guide rail 51 installed at the center of the right side of the workbench 2, and a non-powered guide rail 52 installed on both sides of the electric guide rail 51. The non-powered guide rail 52 is slidably fitted with the roller coating component 6 to provide stable support for the roller coating component 6.

[0047] 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, thereby controlling the forward and backward movement of the roller coating assembly 6.

[0048] The roller coating assembly 6 includes a horizontally arranged first connecting plate 61, which is slidably fitted with an electric guide rail 51 and a non-powered guide rail 52. A vertically arranged second connecting plate 62 is installed on the first connecting plate 61. An oil collection box 63 is installed on the left side of the second connecting plate 62. 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 claws 67 arranged side by side. The claws 67 are connected to the coating roller 69 through the air gripper roller connector 68. The upper coating roller is used to coat the inner peripheral sidewall of the stator 4 to be coated with an oil film, and the lower coating roller 69 is used to coat the outer peripheral sidewall of the stator 4 to be coated with an oil film.

[0049] The bottom of the second connecting plate 62 is provided with a groove, and the right side of the oil collection box 63 is connected to the second connecting plate 62 through a metal connector passing through the groove, which facilitates the disassembly and replacement of the oil collection box 63.

[0050] A wide gripper control valve 65 is installed on the upper right side of the second connecting plate 62. The controlled end of the wide gripper control valve 65 is connected to the output end of the PLC control module. The wide gripper control valve 65 is connected to the air inlet pipe of the wide gripper 66. The PLC control module controls the opening and closing of the wide gripper control valve 65 to control the air pressure change inside the wide gripper 66, thereby realizing the clamping and releasing of the gripper 67.

[0051] The coating roller 69 includes a roller shaft 690, a roller oil storage box 691 is installed around the roller shaft 690, oil outlet holes 696 are evenly opened on the outer wall of the roller oil storage box 691, and roller external material 692 is provided on the outer periphery of the roller oil storage box 691, which can absorb the oil flowing out of the oil outlet holes 696 and apply it to the inner and outer peripheral sidewalls of the stator 4 to be coated.

[0052] The roller coating material 692 is made of polypropylene to ensure that the roller coating material will not be snagged by the sharp structures on the inner and outer peripheral sidewalls of the stator during the coating process, so as to prevent part of the roller coating material from remaining on the stator surface and affecting the stator quality.

[0053] The roller oil storage box 691 has inner grooves at both ends. A first deep groove ball bearing 693 is installed in the inner groove at the right end of the roller oil storage box 691 and is rotatably fitted with the roller shaft 690. A shoulder is provided on the roller shaft 690 located to the right of the first deep groove ball bearing 693 to restrict the movement of the roller shaft 690.

[0054] A second deep groove ball bearing 694 is installed in the inner groove at the left end of the roller oil storage box 691 and is rotatably fitted with the roller shaft 690. The roller shaft 690 located to the left of the first deep groove ball bearing 694 is connected to the roller shaft fastener 695, thereby restricting the roller shaft 690 from moving to the right.

[0055] A height adjustment mechanism for adjusting the height of the coating roller 69 is also provided between the roller shaft 690 and the pneumatic gripper roller connector 68.

[0056] The height adjustment mechanism includes a shaft connector 681 installed on the right side of the shaft 690, and an open movable groove 680 on the left side of the pneumatic gripper roller connector 68. The shaft connector 681 is slidably installed in the movable groove 680.

[0057] The side wall of the pneumatic gripper roller connector 68 is threaded with an adjusting bolt 682. The bottom of the adjusting bolt 682 passes through the side wall of the pneumatic gripper roller connector 68 and is connected to the rotating shaft connector 681. By rotating the adjusting bolt, the position of the roller rotating shaft 690 is adjusted, thereby adjusting the height of the coating roller 69 to accommodate stators of different sizes.

[0058] The PLC control module in this application is controlled by a PLC controller. The circuit connection between the PLC controller and the wide-type pneumatic 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.

[0059] In use, first place the stator 4 to be coated on the carrier component 3, rotate the carrier component 3 and the stator 4 to be coated so that the stator 4 to be coated is axially parallel to the coating roller 69.

[0060] Secondly, the positions of the upper coating roller 69 and the lower coating roller 69 are adjusted according to the inner and outer diameters of the stator 4 to be coated, so as to ensure that when the wide-type air gripper 66 drives the chuck 67 to clamp, the upper coating roller 69 can contact the inner circumferential side wall of the stator, and the lower coating roller 69 can contact the outer circumferential side wall of the stator.

[0061] Next, 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 69 passes through the inside of the stator 4 to be coated, and the lower coating roller 69 is located below the stator 4 to be coated, ensuring that the coating roller 69 covers the length of the stator 4 to be coated.

[0062] Then, the wide-type air gripper is controlled to clamp the upper coating roller 69 into contact with the inner peripheral sidewall of the stator, and the lower coating roller 69 into contact with the outer peripheral sidewall of the stator.

[0063] Finally, manually turn the rotary handle 328 to rotate the silicone roller 325. Due to the friction between the silicone roller 325 and the outer wall of the stator 4 to be coated, the stator rotates under the action of friction. At the same time, the oil storage box inside the coating roller 69 leaks oil outward and wets the roller outer material 692 on the surface. The oil is applied to the surface of the stator by the roller outer material soaked in rust-preventive oil, ensuring that the rust-preventive oil is evenly coated on the surface of the stator.

[0064] After the oiling is completed, release the gripper of the wide air 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.

[0065] This invention provides an oil film coating system for stators. By setting up a support component to support the stator to be coated and drive the stator to rotate, it not only avoids contact between the rust-preventive oil and the stator surface during application, but also ensures uniform contact between the stator and the coating roller during rotation, guaranteeing the uniformity of the rust-preventive oil application. At the same time, by setting up two coating rollers, the inner and outer circumferential sidewalls of the stator can be coated with rust-preventive oil simultaneously, improving work efficiency. Furthermore, the outer side of the coating roller is provided with an external material made of polypropylene to prevent the external material from being snagged by the sharp structures on the stator surface during the coating process, thus preventing some external material from remaining on the stator surface and affecting the stator production quality.

[0066] This invention also includes a height adjustment mechanism for adjusting the height of the coating roller, making the equipment suitable for applying anti-rust oil to stators of different sizes. This avoids the need to frequently change coating rollers of different sizes to adapt to stator sizes, reducing production costs. At the same time, combined with the horizontal movement component and the automated control of the PLC control module, it greatly improves the efficiency and quality of applying anti-rust oil to stators.

Claims

1. An oil film coating system for a stator, characterized by: The application relates to a kind of automatic anti-rust oil coating machines for stator, including support frame (1) and PLC control module, support frame (1) top is provided with workbench (2), workbench (2) left side is provided with the load component (3) for installing the stator (4) to be coated, workbench (2) right side is installed with the roller coating component (6) for smearing rust-proof oil to the inside and outside of stator (4) to be coated;The roller coating component (6) is connected with the horizontal movement component (5) arranged at the right side of workbench (2);The bottom of support frame (1) is installed with support base plate (9), support base plate (9) is installed with oil tank (8), oil tank (8) is connected with oil pump (7), oil pump (7) is connected with roller coating component (6) by oil pipe;The controlled end of oil pump (7), roller coating component (6), horizontal movement component (5) is connected with the output end of PLC control module respectively.

2. A film coating system for a stator as claimed in claim 1, characterized in that: The load component (3) includes a rotating mechanism mounted on the workbench (2) and a load mechanism connected with 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) mounted on the workbench (2), a central sunken hole is arranged in the rotating base plate (310), a rotating shaft (312) is mounted in the sunken hole, a thrust ball bearing (313) matched with the rotating shaft (312) is also mounted in the sunken hole, and the top of the rotating shaft (312) is connected with a roller support seat (311).

4. A film-coating system for a stator according to claim 3, characterized in that: The load mechanism includes roller rod side supports (320) arranged on the left and right sides of the roller support seat (311), a reverse trapezoidal groove (329) is formed in the middle of the roller rod side supports (320) to ensure that the roller coating component (6) passes through the stator (4) to be coated, a manual roller supporting wheel (324) is connected between the top of the front ends of the roller rod side supports (320), a silica gel roller (325) is mounted on the manual roller supporting wheel (324) between the two roller rod side supports (320) to support the stator (4) to be coated and drive the stator (4) to rotate by the friction between the stator (4) to be coated and the silica gel roller (325), and a load-bearing roller supporting wheel (322) is connected between the top of the rear ends of the roller rod side supports (320), a load-bearing roller (323) is rotatably mounted on the load-bearing roller supporting wheel (322) between the two roller rod side supports (320) to support the stator (4) to be coated and assist the stator (4) to rotate.

5. The oil film coating system for a stator of claim 1, wherein: The horizontal movement component (5) includes an electric guide rail (51) mounted on the right center of the workbench (2), unpowered guide rails (52) are mounted on the left and right sides of the electric guide rail (51), and the unpowered guide rails (52) are slidably connected with the roller coating component (6); a guide rail control button (53) is mounted on the right side of the workbench (2), the guide rail control button (53) is electrically connected with the PLC control module, and the output end of the PLC control module is connected with 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) comprises a horizontally arranged first connecting plate (61) which is slidably connected with the electric guide rail (51) and the non-powered guide rail (52) respectively; a vertically arranged second connecting plate (62) is installed on the first connecting plate (61), a wide air claw (66) is installed on the upper left side of the second connecting plate (62), a wide claw control valve (65) connected with the air inlet pipe of the wide air claw (66) is installed on the upper right side of the second connecting plate (62), and the controlled end of the wide claw control valve (65) is connected with the output end of the PLC control module; the wide air claw (66) comprises two claws (67) arranged in parallel, and the claws (67) are connected with the coating roller (69) through air claw roller connecting pieces (68); when the wide air claw (66) is clamped, the upper coating roller is in contact with the inner circumferential side wall of the stator (4) to be coated, and the lower coating roller (69) is in contact with the outer circumferential side wall of the stator (4) to be coated.

7. A film-coating system for a stator according to claim 6, characterized in that: The coating roller (69) comprises a roller shaft (690), the roller shaft (690) is provided with a roller oil storage box (691) on the circumferential side, the outer wall of the roller oil storage box (691) is uniformly provided with oil outlet holes (696), and the circumferential side of the roller oil storage box (691) is provided with a roller outer attached material (692) which absorbs and applies the rust-proof oil discharged from the oil outlet holes (696) to the stator side wall; the roller outer attached material (692) is made of polypropylene material which is not easy to be hooked.

8. A film coating system for a stator as claimed in claim 7, characterised in that: The roller shaft (690) and the air claw roller connecting piece (68) are further provided with a height adjusting mechanism for adjusting the height of the coating roller (69).

9. A film coating system for a stator as claimed in claim 8, characterised in that: The height adjusting mechanism comprises a shaft connecting piece (681) installed on the right end of the circumferential side of the roller shaft (690), the left end of the air claw roller connecting piece (68) is provided with an open movable groove (680), and the shaft connecting piece (681) is slidably installed in the movable groove (680); the side wall of the air claw roller connecting piece (68) is threadedly connected with an adjusting bolt (682), and the bottom of the adjusting bolt (682) penetrates the side wall of the air claw roller connecting piece (68) and is connected with the shaft connecting piece (681).

10. The oil film coating system for a stator of claim 1, wherein: The PLC control module adopts a PLC controller.

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