Multi-specification stator automatic paint scraping device and stator paint dipping production line

Abstract

The application discloses a multi-specification stator automatic paint scraping device and a stator paint dipping production line, which comprises oppositely arranged inner wall stator scraping plates and outer wall stator scraping plates, wherein the inner wall stator scraping plates and the outer wall stator scraping plates are respectively composed of a plurality of arc-shaped clamping plates, and the arc-shaped clamping plates are respectively adapted to the inner holes and the outer walls of the stators; the inner wall stator scraping plates are driven to move inwards and outwards by a first pneumatic device, the first pneumatic device is rigidly connected with the output shaft of a first motor, and the rotation paint scraping of the inner holes of the stators is realized; and the outer wall stator scraping plates are driven to move inwards and outwards by a second pneumatic device, and the second pneumatic device is rigidly connected with the output shaft of a second motor. The application has the beneficial effects that the stator with different outer diameters and overlapping thickness specifications can be self-adapted, the traditional manual paint scraping operation is replaced, the high consistency of the paint scraping effect of each product is ensured, the quality fluctuation caused by human factors is fundamentally eliminated, and the product yield and the reliability of insulation treatment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of stator production line technology, specifically to an automatic stator coating scraping device and a stator impregnation production line for multiple specifications. Background Technology

[0002] In the field of motor manufacturing, the stator, as the core component of the motor, directly affects the motor's service life, operational reliability, and electrical performance due to the quality of its insulation treatment. Impregnation is a crucial step in stator manufacturing—by impregnating the stator windings with insulating varnish and then drying and curing it to form a dense insulation layer, the stator's voltage withstand strength, moisture resistance, and resistance to mechanical vibration are significantly improved. However, after impregnation, an excess varnish film or varnish nodules often remain on the inner and outer surfaces of the stator. If these excess varnish layers are not removed promptly, they will affect the uniformity of the air gap between the stator and rotor, leading to assembly difficulties or rotor rubbing during operation; simultaneously, residual varnish on the outer surface will also affect the fitting accuracy of the housing assembly. Therefore, precise varnish scraping of the inner and outer surfaces of the stator after impregnation is a necessary step to ensure the quality of subsequent assembly and the overall performance of the motor.

[0003] Currently, motor manufacturers still largely rely on traditional manual methods or simple, general-purpose auxiliary equipment for the scraping operation after stator impregnation. Manual scraping typically involves operators using a scraper or specialized tools to manually remove excess paint along the inner and outer surfaces of the stator. This method has several inherent drawbacks: First, the accuracy of scraping is highly dependent on individual experience and technique; significant differences in quality exist between different operators and even among the same operator at different times, easily leading to problems such as missed areas, excessive scraping damaging the insulation layer, or leaving paint nodules. Second, manual scraping is inefficient, especially in mass production, where each stator can take several minutes or even longer, becoming a bottleneck for the entire production line. Third, long-term repetitive manual work results in high labor intensity and fatigue for operators, and the splashing paint debris can negatively impact the working environment and personnel health.

[0004] To alleviate the shortcomings of manual operation, some companies have tried to introduce general-purpose mechanically assisted paint scraping equipment. This type of equipment typically uses a fixed scraper or rotating cutter, which works in conjunction with the clamping and rotation of the stator to achieve automatic paint scraping. However, such equipment is often designed only for a specific stator specification. Once the product model changes—for example, from a small household appliance motor stator to an industrial servo motor stator—and the outer diameter, inner diameter, and stack thickness parameters change significantly, the equipment requires cumbersome mechanical adjustments, including changing the clamps, repositioning the cutter, and adjusting the feed rate. The debugging process can take several hours or even half a day, making it difficult to meet the flexible production needs of modern motor manufacturing, which demands "multiple varieties, small batches," and rapid market response. Furthermore, replacing worn scrapers is inconvenient, and the lack of real-time control over the scraping force still poses a risk of scratching the stator surface.

[0005] From the perspective of the overall process flow, the production line layout for stator impregnation and coating also reveals significant systemic problems. The current production model still disperses processes such as impregnation, draining, coating, and cleaning across different workstations, with each process relying on manual handling or semi-automatic transfer devices for connection. This discrete layout leads to long waiting times between processes, severe work-in-process inventory buildup, and each piece of equipment independently occupies workshop space, resulting in low utilization of valuable factory space. More importantly, due to the lack of integrated automated linkage design, it is difficult to achieve continuous cycle time for processes such as feeding, impregnation, draining, coating, and unloading, limiting overall production efficiency and increasing the risk of quality instability due to manual intervention. Summary of the Invention

[0006] This invention addresses the problems of poor precision, incomplete or excessive scraping of paint, and poor stator assembly quality caused by traditional paint scraping methods, as well as the low production efficiency and high labor costs resulting from the independent operation of each stator impregnation process requiring manual connection and transfer.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An automatic stator coating scraping device with multiple specifications includes an inner stator scraper and an outer stator scraper arranged opposite to each other. The inner stator scraper and the outer stator scraper are each composed of multiple arc-shaped clamps, and the shapes of the arc-shaped clamps are respectively adapted to the inner hole and the outer wall of the stator. The inner wall stator scraper is driven to move inward and outward by a first pneumatic device, which is rigidly connected to the output shaft of a first motor to achieve rotational scraping of paint on the inner hole of the stator. The outer stator scraper is driven to move inward and outward by a second pneumatic device, which is rigidly connected to the output shaft of the second motor to achieve rotational scraping of paint on the outer stator wall.

[0008] During operation, the inner stator scraper and the outer stator scraper alternately scrape paint. When the inner stator scraper scrapes paint, the outer stator scraper clamps it, and when the outer stator scraper scrapes paint, the inner stator scraper clamps it. The working pressure used for clamping is 0.05 to 0.10 MPa greater than the working pressure used for scraping paint.

[0009] As a preferred embodiment, the first motor is provided with a first base at its bottom, the second motor is provided with a second base at its bottom, the first base is provided with a longitudinal slide rail at its bottom to adjust the distance between the inner stator scraper and the outer stator scraper, and the second base is provided with a rotary table at its bottom to transfer and stack the processed stator.

[0010] As a preferred embodiment, a transverse slide rail is provided between the first base and the longitudinal slide rail to move the inner wall stator scraper to the production line conveying device. The longitudinal slide rail is a lead screw slide rail driven by a third motor. A slider is provided at the bottom of the transverse slide rail to slide and connect to the longitudinal slide rail. Alternatively, the transverse slide rail is a lead screw slide rail driven by a fourth motor. A slider is provided at the bottom of the first base to slide and connect to the transverse slide rail.

[0011] As a preferred embodiment, the rotary table is driven to rotate by a fifth motor and a gear set.

[0012] In addition, a multi-specification stator impregnation production line using the above-mentioned scraping device is provided, comprising an impregnation device, a hot air drying device, and a multi-specification stator automatic scraping device, which are connected in sequence by a conveying mechanism; a gantry moving mechanism is also provided to move the stator conveyed by the conveying mechanism to the impregnation device for impregnation and then return it to the conveying mechanism; a rotating clamping mechanism is provided to move the impregnated stator to the hot air drying device for drying and then return it to the conveying mechanism; the conveying mechanism conveys the dried stator to the multi-specification stator automatic scraping device for scraping.

[0013] As a preferred embodiment, the impregnation device includes a conveying guide rail, an impregnation tank, and an impregnation tank cover. The impregnation tank is mounted on the conveying guide rail and moves between the conveying mechanism and the impregnation tank cover. The top of the impregnation tank cover is equipped with a lifting hydraulic cylinder and has an air extraction port for vacuuming and a paint inlet for spraying paint. The paint inlet has a paint inlet pipe.

[0014] As a preferred embodiment, the gantry moving mechanism includes a gantry frame, a sliding base, and a first gripper. The gantry frame is connected to a conveying mechanism and an immersion device. The sliding base is slidably mounted on the gantry frame. The sliding base is equipped with a lifting device connected to the first gripper, which is driven by a cylinder.

[0015] As a preferred embodiment, the rotary clamping mechanism includes a rotary base, a telescopic cylinder, and a second gripper. The telescopic cylinder is fixedly mounted on the top of the rotary base, and the second gripper is fixedly connected to the telescopic rod of the telescopic cylinder. The second gripper is driven by the cylinder, and the rotary base drives the second gripper to rotate between the conveying mechanism and the hot air drying device.

[0016] The beneficial effects of this invention are as follows: 1. This invention can adapt to stators with different outer diameters and stack thicknesses, replacing the traditional manual painting process. Because manual painting is difficult to precisely control the force and range, quality problems often occur such as uneven painting, missed areas, or damage to the insulation layer due to excessive force. The automated painting unit of this solution applies constant, programmable motion trajectory and pressure to the stator surface, ensuring a high degree of consistency in the painting effect for each product. This fundamentally eliminates quality fluctuations caused by human factors, significantly improving product yield and the reliability of insulation treatment.

[0017] 2. This invention integrates all processes, including feeding, dipping, draining, scraping, and unloading, into a single automated production line. Seamless connections between workstations are achieved through mechanical transmission and logical interlocks, eliminating the need for manual handling of semi-finished products between different machines or waiting for transfers. This effectively improves overall equipment efficiency and capacity, avoids redundant spacing and auxiliary facility occupation between multiple individual machines, and significantly reduces the floor space occupied by the entire production line, maximizing workshop space utilization. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0020] Figure 3 This is a schematic diagram of the impregnation device according to Embodiment 2 of the present invention.

[0021] Figure 4 This is a schematic diagram of the gantry moving mechanism in Embodiment 2 of the present invention.

[0022] Figure 5 This is a schematic diagram of the rotating clamping mechanism of Embodiment 2 of the present invention.

[0023] The numbers in the attached diagram are: 1. Conveying mechanism, 2. Impregnation device, 21. Conveying guide rail, 22. Impregnation tank, 23. Impregnation tank cover, 24. Lifting hydraulic cylinder, 25. Air extraction port, 26. Paint inlet, 27. Valve, 3. Gantry moving mechanism, 31. Gantry frame, 32. Sliding base, 33. First gripper, 34. Lifting device, 4. Rotary clamping mechanism, 41. Rotary base, 42. Telescopic cylinder, 43. Second gripper, 5. Hot air drying device, 6. Multi-specification stator automatic paint scraping device, 61. Inner wall stator scraper, 62. Outer wall stator scraper, 63. First pneumatic device, 64. First motor, 65. Second pneumatic device, 66. Second motor, 67. First base, 68. Second base, 69. Longitudinal slide rail, 610. Rotary table, 611. Transverse slide rail, 612. Third motor, 613. Fourth motor, 614. Fifth motor. Detailed Implementation

[0024] To illustrate the features of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example 1: Please see Figure 1 This embodiment provides an automatic stator scraping device with multiple specifications, including an inner stator scraper 61 and an outer stator scraper 62 arranged opposite to each other. The inner stator scraper 61 consists of two arc-shaped clamping plates, which are evenly distributed along the circumference. The outer arc surface shape is adapted to the inner hole of the stator. The arc-shaped clamping plates are made of wear-resistant alloy steel and have scraping edges on their surfaces. The outer stator scraper 62 also consists of two arc-shaped clamping plates, whose inner arc surface shape is adapted to the outer wall of the stator. The inner side of the arc-shaped clamping plates has scraping edges.

[0026] The inner stator scraper 61 is driven by a first pneumatic device 63 to move radially inward and outward. The first pneumatic device 63 is a double-acting cylinder with a stroke of 50 mm and a maximum clamping force of 800 N. The cylinder body of the first pneumatic device 63 is rigidly connected to the output shaft end face of the first motor 64 via a connecting bracket. The first motor 64 is a servo motor with a rated power of 1.5 kW and a rated speed of 1500 rpm. When the first motor 64 rotates, it drives the first pneumatic device 63 and the inner stator scraper 61 to rotate together, realizing the rotary scraping of paint on the inner hole of the stator.

[0027] The outer stator scraper 62 is driven by a second pneumatic device 65 to move radially inward and outward. The second pneumatic device 65 is also a double-acting cylinder with a stroke of 50 mm and a maximum clamping force of 800 N. The cylinder body of the second pneumatic device 65 is rigidly connected to the output shaft end face of the second motor 66 via a connecting bracket. The second motor 66 is a servo motor with a rated power of 1.5 kW and a rated speed of 1500 rpm. When the second motor 66 rotates, it drives the second pneumatic device 65 and the outer stator scraper 62 to rotate together, achieving rotary scraping of paint on the outer wall of the stator.

[0028] During operation, one of the inner stator scraper 61 and the outer stator scraper 62 serves as a clamping unit, while the other serves as a paint scraping unit, alternating between them. Specifically, when the inner stator scraper 61 scrapes paint, the outer stator scraper 62 clamps the stator, and vice versa. The working pressure for clamping is 0.05 to 0.10 MPa greater than the working pressure for paint scraping. The working pressure of the pneumatic device for the clamping unit is set to 0.60 MPa, and the working pressure of the pneumatic device for the paint scraping unit is set to 0.53 MPa, with a pressure difference of 0.07 MPa. This ensures that the clamping force is greater than the frictional force during paint scraping, keeping the stator stable.

[0029] The first motor 64 is fixedly mounted on the first base 67 at its bottom, and the second motor 66 is fixedly mounted on the second base 68 at its bottom. A set of longitudinal slide rails 69 is provided below the first base 67 to adjust the center distance between the inner stator scraper 61 and the outer stator scraper 62 to accommodate stators of different diameters. The longitudinal slide rails 69 are composed of a lead screw slide rail driven by the third motor 612, with a lead screw lead of 10 mm and a stroke of 300 mm. A set of transverse slide rails 611 is also provided between the first base 67 and the longitudinal slide rails 69 to move the inner stator scraper 61 to the production line conveyor for material handling. The bottom of the transverse slide rails 611 has a slider that slidably connects to the guide rail of the longitudinal slide rails 69. The transverse slide rails 611 are composed of a lead screw slide rail driven by the fourth motor 613, with a lead screw lead of 8 mm and a stroke of 200 mm. The bottom of the first base 67 has a slider that slidably connects to the guide rail of the transverse slide rails 611.

[0030] The second base 68 has a rotary table 610 at its bottom, which is used for transferring and stacking the processed stators. The rotary table 610 is driven by a fifth motor 614 and a gear set to rotate, with a rotation angle of 0 to 180 degrees and a positioning accuracy of ±0.5 degrees.

[0031] In this embodiment, the inner stator scraper 61 is first moved to the conveyor belt pick-up position via the transverse slide rail 611. The first pneumatic device 63 drives the inner stator scraper 61 to open outward, fit into the inner hole of the stator, and clamp it (pressure 0.60 MPa). Then, the transverse slide rail 611 retracts to the processing position, and the longitudinal slide rail 69 is adjusted according to the stator specifications to align the inner stator scraper 61 with the outer stator scraper 62. At this time, the outer stator scraper 62 is driven inward by the second pneumatic device 65 to contact the outer wall of the stator (pressure 0.53 MPa). The second motor 66 starts, driving the outer stator scraper 62 to rotate and scrape off the paint layer on the outer wall of the stator. After completion, the outer stator scraper 62 is released and withdrawn. The first motor 64 starts, driving the inner stator scraper 61 and the stator to rotate, and the inner scraper scrapes the paint from the inner hole of the stator. After the paint is applied, the inner stator scraper 61 is released, the rotary table 610 rotates, and the stator is removed and stacked by a robotic arm or conveyor. This embodiment can process stators of various specifications with outer diameters of 80 to 200 mm and inner diameters of 40 to 120 mm, with a paint application efficiency of 120 pieces per hour.

[0032] Example 2: Please see Figures 2 to 5 This embodiment provides a multi-specification stator impregnation production line, including an impregnation device 2, a hot air drying device 5, and a multi-specification stator automatic coating scraping device 6, which are connected in sequence via a conveying mechanism 1. The conveying mechanism 1 adopts a chain plate conveyor belt with a width of 600 mm, and the running speed is adjustable from 0.5 to 2 meters per minute.

[0033] The impregnation device 2 includes a conveyor rail 21, an impregnation tank 22, and an impregnation tank cover 23. The conveyor rail 21 is laid horizontally along the production line and is 2 meters long. The bottom of the impregnation tank 22 is equipped with rollers that move on the conveyor rail 21 via a motor, with a stroke of 1.5 meters. The impregnation tank cover 23 is fixedly installed above the middle of the conveyor rail 21, and two lifting hydraulic cylinders 24 are installed on its top. The hydraulic cylinders have a stroke of 400 mm and are used to drive the impregnation tank cover 23 to move up and down. The impregnation tank cover 23 has an exhaust port 25 and an inlet port 26. The exhaust port 25 is connected to a vacuum pump through a pipe to regulate the air pressure inside the impregnation tank. The inlet pipe of the inlet port 26 is equipped with a solenoid valve 27 to control the injection of insulating varnish. The impregnation tank 22 has dimensions of 800 mm × 600 mm × 400 mm and can accommodate stators of various specifications for impregnation.

[0034] A gantry moving mechanism 3 is positioned between the conveying mechanism 1 and the impregnation device 2, used to move the stator from the conveying mechanism 1 into the impregnation tank 22. The gantry moving mechanism 3 includes a gantry frame 31, a sliding base 32, and a first gripper 33. The gantry frame 31 is 2 meters high and has a span of 1.2 meters, spanning the conveying guide rails 21 of the conveying mechanism 1 and the impregnation device 2. The sliding base 32 is driven by a servo motor to slide horizontally on the crossbeam guide rail of the gantry frame 31, with a sliding stroke of 800 mm and a positioning accuracy of ±1 mm. A lifting device 34, composed of a lead screw and rail, is mounted on the sliding base 32, with a vertical movement stroke of 500 mm. The piston rod end of the lifting device 34 is fixedly connected to the first gripper 33. The first gripper 33 is a pneumatic parallel gripper, with a clamping force adjustable from 100 to 500 N, used to grip the stator.

[0035] A rotary clamping mechanism 4 is positioned between the impregnation device 2 and the hot air drying device 5 to move the impregnated stator from the impregnation tank 22 to the hot air drying device 5. The rotary clamping mechanism 4 includes a rotary base 41, a telescopic cylinder 42, and a second gripper 43. The rotary base 41 is driven by a servo motor and can rotate from 0 to 180 degrees with a positioning accuracy of ±0.5 degrees. The telescopic cylinder 42 is fixedly mounted on the top of the rotary base 41, with a stroke of 400 mm. The second gripper 43 is fixedly connected to the end of the telescopic rod of the telescopic cylinder 42. The second gripper 43 is also a pneumatic parallel gripper with a clamping force of 300 N. The rotary base 41 drives the second gripper 43 to reciprocate between the material handling position of the impregnation device 2 and the material feeding position of the hot air drying device 5.

[0036] The hot air drying device 5 is a tunnel-type hot air circulating oven, 3 meters long and 1 meter wide, with an internal temperature controllable between 80 and 150 degrees Celsius and a drying time of 30 to 60 minutes. To facilitate coordination with the production line, a lifting platform is also installed at the corresponding position to place the stators to be processed into the hot air drying device 5. After drying, the stators are then conveyed by the conveyor mechanism 1 to the multi-specification stator automatic coating device 6.

[0037] The multi-specification stator automatic paint scraping device 6 uses the multi-specification stator automatic paint scraping device provided in Example 1 to automatically scrape the inner and outer walls of the dried stator to remove excess paint layer.

[0038] The workflow of this embodiment is as follows: First, the stator to be impregnated is conveyed by the conveying mechanism 1 to the area below the gantry moving mechanism 3. The sliding base 32 moves above the material handling position, the lifting device 34 extends, and the first gripper 33 grips the stator. The sliding base 32 moves directly above the impregnation tank 22 of the impregnation device 2, and the lifting device 34 descends to place the stator into the impregnation tank 22. The first gripper 33 releases and retracts.

[0039] The impregnation tank 22 moves along the conveyor rail 21 to below the impregnation tank cover plate 23. The lifting hydraulic cylinder 24 drives the impregnation tank cover plate 23 to descend, sealing the impregnation tank 22. A vacuum is drawn into the tank to -0.08 MPa through the air extraction port 25, and then the valve 27 of the paint inlet 26 is opened to inject insulating varnish, maintaining the impregnation pressure at 0.2 MPa for 10 minutes. After impregnation is completed, the vacuum is released, the impregnation tank cover plate 23 is raised, and then the gantry moving mechanism 3 is used to move the impregnated stator from the impregnation tank 22 onto the conveyor mechanism 1 and transport it to the next stage.

[0040] The rotating base 41 of the rotating clamping mechanism 4 rotates to a position above the conveying mechanism 1, the telescopic cylinder 42 extends, and the second gripper 43 clamps the stator after it has been dipped in paint. Then, the rotating base 41 rotates 180 degrees to the inlet of the hot air drying device 5, and the telescopic cylinder 42 retracts to send the stator into the drying device. The drying device dries the stator at a constant temperature of 120 degrees Celsius for 45 minutes.

[0041] After drying, the stator is removed by the rotary clamping mechanism 4 and placed back onto the conveying mechanism 1, then transported to the multi-specification stator automatic paint scraping device 6. The multi-specification stator automatic paint scraping device 6 automatically adjusts the positions of the inner wall stator scraper 61 and the outer wall stator scraper 62 according to the stator specifications, and performs rotary paint scraping on the inner and outer walls with a pressure difference of 0.07 MPa to remove excess paint layer, finally producing the finished product.

[0042] This embodiment realizes fully automated production of stators from impregnation and drying to coating, and can process stators of various specifications with an outer diameter of 80 to 200 mm, with a production cycle of 5 minutes per piece.

[0043] The above embodiments and accompanying drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention do not depart from the spirit of the present invention and should also fall within the protection scope of the claims of the present invention. Other related technical structures not disclosed in detail in the present invention are existing technologies in the art.

Claims

1. An automatic stator paint scraping device with multiple specifications, characterized in that: It includes an inner stator scraper (61) and an outer stator scraper (62) arranged opposite to each other. The inner stator scraper (61) and the outer stator scraper (62) are each composed of multiple arc-shaped clamps, and the shapes of the arc-shaped clamps are respectively adapted to the inner hole and the outer wall of the stator. The inner wall stator scraper (61) is driven to move inward and outward by the first pneumatic device (63), which is rigidly connected to the output shaft of the first motor (64) to realize the rotational scraping of paint on the inner hole of the stator. The outer wall stator scraper (62) is driven to move inward and outward by the second pneumatic device (65). The second pneumatic device (65) is rigidly connected to the output shaft of the second motor (66) to realize the rotational scraping of paint on the outer wall of the stator. During operation, the inner stator scraper (61) and the outer stator scraper (62) alternately scrape paint. When the inner stator scraper (61) scrapes paint, the outer stator scraper (62) clamps it, and when the outer stator scraper (62) scrapes paint, the inner stator scraper (61) clamps it. The working pressure used for clamping is 0.05 to 0.10 MPa greater than the working pressure used for scraping paint.

2. The multi-specification stator automatic paint scraping device according to claim 1, characterized in that: The first motor (64) is provided with a first base (67) at its bottom, and the second motor (66) is provided with a second base (68) at its bottom. The first base (67) is provided with a longitudinal slide rail (69) at its bottom to adjust the distance between the inner wall stator scraper (61) and the outer wall stator scraper (62). The second base (68) is provided with a rotary table (610) at its bottom to transfer the processed stator after stacking.

3. The multi-specification stator automatic paint scraping device according to claim 2, characterized in that: A transverse slide rail (611) is provided between the first base (67) and the longitudinal slide rail (69) to move the inner wall stator scraper (61) to the production line conveying device. The longitudinal slide rail (69) is a lead screw slide rail driven by a third motor (612). A slider is provided at the bottom of the transverse slide rail (611) to slide and connect to the longitudinal slide rail (69). The transverse slide rail (611) is a lead screw slide rail driven by a fourth motor (613). A slider is provided at the bottom of the first base (67) to slide and connect to the transverse slide rail (611).

4. The multi-specification stator automatic paint scraping device according to claim 2, characterized in that: The rotary table (610) is driven to rotate by a fifth motor (614) and a gear set.

5. A multi-specification stator impregnation production line using the multi-specification stator automatic coating scraping device as described in claim 3, characterized in that: It includes an impregnation device (2), a hot air drying device (5), and a multi-specification stator automatic paint scraping device (6), which are connected in sequence through a conveying mechanism (1); a gantry moving mechanism (3) is also provided to move the stator conveyed by the conveying mechanism (1) to the impregnation device (2) for impregnation and then return it to the conveying mechanism (1); a rotating clamping mechanism (4) is provided to move the impregnated stator to the hot air drying device (5) for drying and then return it to the conveying mechanism (1); the conveying mechanism (1) conveys the dried stator to the multi-specification stator automatic paint scraping device (6) for paint scraping.

6. The multi-specification stator impregnation production line according to claim 5, characterized in that: The impregnation device (2) includes a conveying guide rail (21), an impregnation tank (22) and an impregnation tank cover plate (23). The impregnation tank (22) is installed on the conveying guide rail (21) to move between the conveying mechanism (1) and the impregnation tank cover plate (23). The top of the impregnation tank cover plate (23) is provided with a lifting hydraulic cylinder (24) and an air extraction port (25) for adjusting air pressure and a paint inlet (26) for spraying paint. A valve (27) is provided on the paint inlet pipe of the paint inlet (26).

7. The multi-specification stator impregnation production line according to claim 5, characterized in that: The gantry moving mechanism (3) includes a gantry frame (31), a sliding base (32) and a first gripper (33). The gantry frame (31) is connected to the conveying mechanism (1) and the immersion device (2). The sliding base (32) is slidably mounted on the gantry frame (31). The sliding base (32) is provided with a lifting device (34) connected to the first gripper (33). The first gripper (33) is driven by a cylinder.

8. The multi-specification stator impregnation production line according to claim 5, characterized in that: The rotary clamping mechanism (4) includes a rotary base (41), a telescopic cylinder (42), and a second gripper (43). The telescopic cylinder (42) is fixedly mounted on the top of the rotary base (41), and the second gripper (43) is fixedly connected to the telescopic rod of the telescopic cylinder (42). The second gripper (43) is driven by a cylinder, and the rotary base (41) drives the second gripper (43) to rotate between the conveying mechanism (1) and the hot air drying device (5).

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