Motor shaft sleeve pre-cleaning device

Abstract

The application discloses a motor shaft sleeve pre-cleaning device and belongs to the technical field of new energy automobile motor manufacturing. The device comprises a rack, driving rollers, a supporting roller set, a magnetic attraction element and a transmission mechanism. The rack is provided with a cleaning station, a conveying device and a brush cleaning device. The conveying device sends the motor shaft sleeve to the cleaning station from back to front. The driving roller is internally provided with a containing cavity. The cavity is provided with a first station and a second station. The first station is located between the cleaning station and the second station. The supporting roller set can move relative to the driving roller to clamp or release the shaft sleeve. When clamping, the driving roller drives the shaft sleeve to rotate. The brush cleaning device sweeps the inner and outer walls of the shaft sleeve. The magnetic attraction element is rotatably arranged in the containing cavity and is linked with the supporting roller set through the transmission mechanism. When clamping, the magnetic attraction element is turned to the first station to adsorb the shaft sleeve, so that the contact pressure is increased to prevent slipping. When releasing, the magnetic attraction element is turned to the second station to reduce the suction force, so that the conveying is facilitated. The structure ensures that the driving roller stably drives the shaft sleeve to rotate, the brush cleaning is more uniform and comprehensive, and the pre-cleaning effect of the motor shaft sleeve is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle motor manufacturing technology, and in particular to a motor shaft sleeve pre-cleaning device. Background Technology

[0002] Motor bushings are key auxiliary components fitted onto motor shafts, serving to protect the motor shaft, reduce operational wear, distribute loads, and extend the overall lifespan of the motor. They are primarily made of metal and are widely used in various industrial motors and related machinery. Particularly in the new energy vehicle sector, where the motor motor is a core power component, the cleanliness of its bushing directly affects the motor's operational stability and lifespan. Therefore, the pre-cleaning process for new energy vehicle motor bushings is particularly important. Before assembly, the inner and outer walls of the motor bushing are typically covered with dust and other impurities. Motor bushing pre-cleaning equipment is mainly used to perform preliminary cleaning of these impurities on the inner and outer walls of the motor bushing.

[0003] In existing technologies, pre-cleaning equipment typically includes a conveying device, a brush cleaning device, a drive roller, and a support roller assembly. The conveying device continuously transports the motor bushing to be cleaned (i.e., the motor bushing of a new energy vehicle) to the cleaning station. Once the motor bushing is in place, the support roller assembly moves closer to the drive roller, causing the drive roller and support roller assembly to clamp the outer wall of the motor bushing. Subsequently, the drive roller starts and rotates, and the friction between the drive roller and the outer wall of the motor bushing drives the motor bushing to rotate synchronously, thereby driving the support roller assembly to rotate. The brush cleaning device operates synchronously, brushing and cleaning the outer and inner walls of the rotating motor bushing to remove attached impurities. After the pre-cleaning operation is completed, the support roller assembly moves away from the drive roller, releasing the clamp on the motor bushing. The conveying device continues to operate, sending the pre-cleaned motor bushing into the subsequent final cleaning equipment to complete the remaining cleaning work. Because the outer wall of the motor bushing is relatively smooth, this significantly reduces the friction between the drive roller and the outer wall of the motor bushing. As a result, the motor bushing is prone to slippage during the rotation of the motor bushing driven by the drive roller. This is especially true for motor bushings in new energy vehicles, which have higher requirements for cleaning uniformity and cleaning effect. Slippage will further prevent the drive roller from driving the motor bushing to rotate synchronously and stably, making it impossible for the brush cleaning device to clean the inner and outer walls of the motor bushing evenly and comprehensively. This results in poor pre-cleaning effect and makes it difficult to meet the assembly and use requirements of motor bushings in new energy vehicles. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a motor bushing pre-cleaning device, which can reduce the probability of motor bushing slippage, thereby improving the pre-cleaning effect of motor bushings to meet the assembly and use requirements of motor bushings in new energy vehicles.

[0005] According to an embodiment of the present invention, a motor bushing pre-cleaning device includes a frame, a cleaning station, a conveying device, and a brush cleaning device. The conveying device is used to convey the motor bushing from back to front to the cleaning station. A drive roller has an internal receiving cavity and is rotatably connected to the frame. The receiving cavity has a first station and a second station, with the second station being farther away from the cleaning station relative to the first station. A support roller group is movable toward the drive roller, so that the support roller group and the drive roller together clamp the motor bushing at the cleaning station, and the drive roller drives the motor bushing to rotate. The brush cleaning device brushes the outer and inner walls of the motor bushing. The support roller group is movable away from the drive roller, so that the support roller group and the drive roller are loosened. The machine includes a motor bushing and a magnetic chuck, which is rotatably connected to the frame and disposed within the receiving cavity, and is capable of rotating to either the first or second work station. A support roller assembly is connected to the magnetic chuck via a transmission mechanism. When the support roller assembly moves towards the drive roller, it drives the magnetic chuck from the second work station to the first work station via the transmission mechanism, thereby magnetically attracting the motor bushing at the cleaning station to increase the contact pressure between the drive roller and the motor bushing. When the support roller assembly moves away from the drive roller, it drives the magnetic chuck from the first work station to the second work station via the transmission mechanism to reduce the magnetic attraction force of the magnetic chuck on the motor bushing.

[0006] It has at least the following beneficial effects: First, the motor bushing to be cleaned is transported to the conveyor. The conveyor starts and continuously transports the motor bushing from back to front until it is delivered to the pre-set cleaning station on the frame and positioned. At this time, the support roller group begins to move towards the drive roller. During the movement of the support roller group towards the drive roller, the support roller group drives the magnetic suction component located in the drive roller's receiving cavity to rotate around the axis of the drive roller through the transmission mechanism. When the support roller group moves into position and clamps the motor bushing at the cleaning station together with the drive roller, the magnetic suction component rotates to the first station and stops. At this time, the magnetic suction component generates a magnetic attraction force on the motor bushing at the cleaning station, thereby increasing the contact pressure between the drive roller and the motor bushing. Subsequently, the drive roller starts and begins to rotate. The increased friction between the drive roller and the outer wall of the motor bushing stabilizes and drives the motor bushing to rotate synchronously. At the same time, the brush cleaning device operates synchronously, thoroughly and evenly brushing the outer and inner walls of the rotating motor bushing to remove dust and other impurities adhering to the inner and outer walls of the motor bushing. After the pre-cleaning operation is completed, the support roller group begins to move away from the drive roller. During the movement of the support roller group, the support roller group drives the magnetic suction component to rotate around the axis of the drive roller again through the transmission mechanism. When the support roller group moves into position and releases its clamp on the motor bushing, the magnetic suction component just rotates to the second station and stops. At this time, the magnetic attraction force of the magnetic suction component on the motor bushing decreases. Finally, the conveying device sends the motor bushing after pre-cleaning to the subsequent final cleaning equipment to complete the remaining cleaning work. Thus, the entire pre-cleaning process is completed. The linkage structure, which drives the magnetic suction component to rotate as the support roller group moves and then stops at the corresponding station after moving into position, ensures that the magnetic suction component is in the first station when the support roller group clamps the motor bushing and generates a magnetic attraction force on the motor bushing. This effectively increases the contact pressure between the drive roller and the motor bushing, thereby significantly reducing the probability of slippage caused by the smooth outer wall of the motor bushing. This ensures that the drive roller can stably drive the motor bushing to rotate synchronously, allowing the brush cleaning device to evenly and comprehensively brush and clean the inner and outer walls of the motor bushing, effectively improving the pre-cleaning effect of the motor bushing and thus meeting the assembly and usage requirements of motor bushings for new energy vehicles. At the same time, when the support roller group releases the motor bushing, the magnetic suction component rotates to the second station and reduces the magnetic attraction force, avoiding the magnetic attraction force from affecting the subsequent conveying of the motor bushing and ensuring the smoothness of the entire pre-cleaning process.

[0007] According to an embodiment of the present invention, a motor bushing pre-cleaning device further includes a mounting frame slidably connected to the frame, a support roller assembly disposed on the mounting frame, and the mounting frame being drivenly connected to the magnetic suction member through the transmission mechanism. The mounting frame can move closer to or further away from the drive roller, so that the support roller assembly and the drive roller jointly clamp the motor bushing at the cleaning station and the magnetic suction member rotates from the second station to the first station, or so that the support roller assembly and the drive roller release the motor bushing and the magnetic suction member rotates from the first station to the second station.

[0008] According to an embodiment of the present invention, a motor shaft sleeve pre-cleaning device includes a transmission mechanism comprising a rack, a gear, and a compression spring. The gear is rotatably connected to the frame and connected to the magnetic suction component. The gear is coaxially arranged with the drive roller. The rack is slidably connected to the frame and meshes with the gear. The compression spring is disposed between one end of the rack and the frame. The compression spring drives the rack to move toward the mounting frame so that the other end of the rack abuts against the mounting frame. When the mounting frame approaches the drive roller, the mounting frame pushes the rack to move, and the rack drives the gear to rotate, so that the gear drives the magnetic suction component from the second station to the first station. When the mounting frame moves away from the drive roller, the compression spring drives the rack to move, and the rack drives the gear to rotate, so that the gear drives the magnetic suction component from the first station to the second station.

[0009] According to an embodiment of the present invention, a motor bushing pre-cleaning device further includes a swing arm and a flexible scraper. One end of the swing arm is connected to the flexible scraper, and the other end of the swing arm is connected to the gear. The gear can drive the swing arm to swing, so that the swing arm drives the flexible scraper to rotate around the axis of the drive roller. When the gear drives the magnetic attractor from the second station to the first station, the gear drives the flexible scraper to rotate to the cleaning station through the swing arm, so that the flexible scraper abuts against the outer wall of the motor bushing at the cleaning station. When the gear drives the magnetic attractor from the first station to the second station, the gear drives the flexible scraper away from the cleaning station through the swing arm.

[0010] According to an embodiment of the present invention, the motor bushing pre-cleaning device includes a first brush mechanism and a second brush mechanism. The first brush mechanism is disposed on the mounting frame. When the support roller group and the drive roller jointly clamp the motor bushing at the cleaning station, the first brush mechanism brushes the outer wall of the motor bushing. The second brush mechanism is disposed on the frame and can be inserted upward into the motor bushing at the cleaning station to brush the inner wall of the motor bushing.

[0011] According to an embodiment of the present invention, the motor bushing pre-cleaning device includes a second brush mechanism comprising a second brush roller and a lifting drive component. The lifting drive component is mounted on the frame and can drive the second brush roller to rise so that the upper end of the second brush roller is inserted into the motor bushing at the cleaning station. When the drive roller rotates the motor bushing, the second brush roller brushes the inner wall of the motor bushing. The lifting drive component can drive the second brush roller to fall so that the upper end of the second brush roller is pulled out from the motor bushing.

[0012] According to an embodiment of the present invention, the motor bushing pre-cleaning device further includes a second brush mechanism, which is mounted on the frame. The linear drive is capable of driving the second brush roller to move backward so that the upper end of the second brush roller moves to below the motor bushing at the cleaning station. When the lifting drive drives the second brush roller to descend, the linear drive is capable of synchronously driving the second brush roller to move forward so that the second brush roller drives the motor bushing at the cleaning station to move forward and disengage the motor bushing from the drive roller.

[0013] According to an embodiment of the present invention, a motor bushing pre-cleaning device is provided on the outer wall of the drive roller. When the support roller group and the drive roller jointly clamp the motor bushing at the cleaning station, the first limiting ring plate is located above the motor bushing and can abut against the motor bushing.

[0014] According to an embodiment of the present invention, the motor bushing pre-cleaning device includes a support roller group comprising two support rollers, the upper and lower ends of which are rotatably connected to the mounting frame. Each of the two support rollers has a second limiting ring plate on its outer wall. The drive roller and the two support rollers can jointly clamp the motor bushing at the cleaning station, so that both second limiting ring plates are located above the motor bushing and both second limiting ring plates can abut against the motor bushing.

[0015] According to an embodiment of the present invention, the motor bushing pre-cleaning device includes two belt conveyor mechanisms. The two belt conveyor mechanisms are parallel to each other and are both disposed on the frame. The two belt conveyor mechanisms abut against the left and right sides of the motor bushing, so that the two belt conveyor mechanisms can convey the motor bushing from back to front.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the motor shaft sleeve pre-cleaning device according to an embodiment of the present invention; Figure 2 This is a partial structural diagram of a motor shaft sleeve pre-cleaning device; Figure 3 This is a structural diagram of the drive roller, gear, and magnetic chuck; Figure 4 This is a structural diagram of the magnetic accumulator; Figure 5This is a schematic diagram of the first workstation, the second workstation, and the cleaning workstation; Figure 6 This is a top view of the drive roller and support roller assembly releasing the motor bushing; Figure 7 This is a top view of the drive roller and support roller assembly clamping the motor shaft sleeve; Figure 8 This is a schematic diagram of the structure where the flexible scraper abuts against the outer wall of the motor shaft sleeve; Figure 9 This is a schematic diagram of the internal structure of the motor shaft sleeve pre-cleaning equipment; Figure 10 This is a schematic diagram of the second brush roller, the slide table, and the slide table structure. Figure 11 This is a schematic diagram of the second brush roller; Icon labels: Frame 100; First station 101; Second station 102; Cleaning station 103; Drive roller 110; Receiving cavity 111; First limiting ring plate 112; Second motor 120; Transmission mechanism 130; Rack 131; Gear 132; Compression spring 133; Magnetic suction component 140; Support roller group 150; Support roller 151; Second limiting ring plate 152; Mounting frame 160; Swing arm 170; Flexible scraper 180; First linear cylinder 190; Brush cleaning device 200; first brush roller 210; second brush roller 220; roller body 221; suction hole 222; brush strip 223; first motor 230; lifting drive component 240; linear drive component 250; slide table 260; lifting frame 270; dust collection cover 280; Conveying device 300; belt conveyor mechanism 310; Motor bushing 10. Detailed Implementation

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0020] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0021] The motor bushing pre-cleaning equipment of this invention is mainly used for pre-cleaning of motor bushings in new energy vehicles and is suitable for the production and assembly of motor bushings for various new energy vehicles (including pure electric vehicles and hybrid electric vehicles).

[0022] refer to Figures 1 to 7 This invention discloses a pre-cleaning device for motor bushings, comprising a frame 100, a drive roller 110, a support roller group 150, a magnetic suction component 140, and a transmission mechanism 130. The frame 100 is provided with a cleaning station 103, a conveying device 300, and a brush cleaning device 200. The conveying device 300 is used to convey the motor bushing 10 from back to front to the cleaning station 103. The drive roller 110 has a receiving cavity 111 inside and is rotatably connected to the frame 100. A first station 101 and a second station 102 are provided within the receiving cavity 111. The first station 101 is located between the cleaning station 103 and the second station 102, and the second station 102 is opposite the first station. 101 is located away from the cleaning station 103; the support roller assembly 150 is movably connected to the frame 100, and the support roller assembly 150 can move towards the drive roller 110, so that the support roller assembly 150 and the drive roller 110 together clamp the motor bushing 10 at the cleaning station 103, and the drive roller 110 drives the motor bushing 10 to rotate, while the brush cleaning device 200 brushes the outer and inner walls of the motor bushing 10, and the support roller assembly 150 can move away from the drive roller 110. The movement causes the support roller assembly 150 and the drive roller 110 to release the motor bushing 10; the magnetic chuck 140 is rotatably connected to the frame 100 and disposed in the receiving cavity 111 around the axis of the drive roller 110; the magnetic chuck 140 can rotate to the first station 101 or the second station 102; the support roller assembly 150 is connected to the magnetic chuck 140 via the transmission mechanism 130; when the support roller assembly 150 moves toward the drive roller 110, the support roller assembly 150 is driven by the transmission mechanism 130. The moving magnetic chuck 140 rotates from the second station 102 to the first station 101, causing it to magnetically attract the motor bushing 10 at the cleaning station 103, thereby increasing the contact pressure between the drive roller 110 and the motor bushing 10. When the support roller group 150 moves away from the drive roller 110, it drives the magnetic chuck 140 from the first station 101 to the second station 102 via the transmission mechanism 130, thereby reducing the magnetic attraction force of the magnetic chuck 140 on the motor bushing 10. Figure 5 and Figure 6 In the middle, the motor shaft sleeve 10 is in the cleaning station 103; in Figure 5 In the middle, the magnetic suction component 140 is in the second station 102; in Figure 6 In the middle, the magnetic suction component 140 is in the first station 101.

[0023] In this embodiment of the invention, the motor bushing pre-cleaning device further includes a second motor 120, which is mounted on the frame 100. A drive roller 110 is parallel to the vertical direction, and its lower end is rotatably connected to the frame 100. The output shaft of the second motor 120 is connected to the lower end of the drive roller 110 via a common belt drive assembly, enabling the second motor 120 to drive the drive roller 110 to rotate around its own axis, thereby allowing the drive roller 110 to drive the motor bushing 10 to rotate around its own axis. The drive roller 110 and the support roller group 150 are respectively arranged on the left and right sides of the cleaning station 103. In this embodiment of the invention, the motor bushing pre-cleaning equipment also includes a limiting cylinder and a positioning sensor. Both the positioning sensor and the limiting cylinder are mounted on the frame 100. When the positioning sensor detects that the motor bushing 10 is about to reach the cleaning station 103, the piston rod of the limiting cylinder extends above the conveying device 300, allowing the forward-moving motor bushing 10 to abut against the piston rod of the limiting cylinder. This ensures that the motor bushing 10 can accurately stop and be positioned at the cleaning station 103, guaranteeing that the support roller group 150 and the drive roller 110 can accurately clamp the motor bushing 10 at the cleaning station 103. After pre-cleaning, the support roller group 150 and the drive roller 110 release the motor bushing 10, and the piston rod of the limiting cylinder retracts to release the limiting effect on the motor bushing 10. The motor bushing 10 is then conveyed into the subsequent final cleaning equipment by the conveying device 300. The positioning sensor and the limiting cylinder are common features, and their cooperation in achieving precise workpiece stopping at the station is also quite common; therefore, further details are omitted here.

[0024] Understandably, the motor bushing 10 to be cleaned is first transported to the conveyor 300. The conveyor 300 is then started, continuously conveying the motor bushing 10 from back to front until it is transported to the pre-set cleaning station 103 on the frame 100 and positioned. At this time, the support roller group 150 begins to move towards the drive roller 110. During the movement of the support roller group 150 towards the drive roller 110, the support roller group 150 drives the magnetic suction member 140 located in the receiving cavity 111 of the drive roller 110 to rotate around the axis of the drive roller 110 through the transmission mechanism 130. Once the support roller group 150 has moved into position and together with the drive roller 110, it clamps the motor bushing 10 to be cleaned. When the motor bushing 10 at cleaning station 103 is cleaned, the magnetic suction component 140 rotates to the first station 101 and stops. At this time, the magnetic suction component 140 generates a magnetic attraction force on the motor bushing 10 at cleaning station 103, thereby increasing the contact pressure between the drive roller 110 and the motor bushing 10. Subsequently, the drive roller 110 starts and begins to rotate. The increased friction between the drive roller 110 and the outer wall of the motor bushing 10 stabilizes and drives the motor bushing 10 to rotate synchronously. At the same time, the brush cleaning device 200 operates synchronously, thoroughly and evenly brushing the outer and inner walls of the rotating motor bushing 10 to remove dust and other impurities attached to the inner and outer walls of the motor bushing 10.

[0025] After the pre-cleaning operation is completed, the support roller group 150 begins to move away from the drive roller 110. During the movement of the support roller group 150, the support roller group 150 drives the magnetic suction component 140 to rotate around the axis of the drive roller 110 again through the transmission mechanism 130. When the support roller group 150 moves into position and releases its clamping on the motor bushing 10, the magnetic suction component 140 just rotates to the second station 102 and stops. At this time, the magnetic attraction force of the magnetic suction component 140 on the motor bushing 10 decreases. Finally, the conveying device 300 sends the motor bushing 10 after pre-cleaning to the subsequent final cleaning equipment to complete the remaining cleaning work. Thus, the entire pre-cleaning process is completed. The linkage structure, which drives the magnetic suction component 140 to rotate when the support roller group 150 moves and stops at the corresponding station after moving into position, ensures that when the support roller group 150 clamps the motor bushing 10, the magnetic suction component 140 is at the first station 101 and generates a magnetic attraction force on the motor bushing 10. This effectively increases the contact pressure between the drive roller 110 and the motor bushing 10, thereby significantly reducing the probability of slippage caused by the smooth outer wall of the motor bushing 10. This ensures that the drive roller 110 can stably drive the motor bushing 10 to rotate synchronously, allowing the brush cleaning device 200 to evenly and comprehensively brush and clean the inner and outer walls of the motor bushing 10, effectively improving the pre-cleaning effect of the motor bushing 10, and thus meeting the assembly and use requirements of the new energy vehicle motor bushing 10. At the same time, when the support roller group 150 releases the motor bushing 10, the magnetic suction component 140 rotates to the second station 102 and reduces the magnetic attraction force, avoiding the magnetic attraction force from affecting the subsequent conveying of the motor bushing 10, and ensuring the smoothness of the entire pre-cleaning process.

[0026] It should be explained that the switching of the magnetic suction component 140 between the first station 101 and the second station 102 via the transmission mechanism 130 is to adapt to the needs of different working stages of the equipment. (Reference) Figure 5The first station 101 is located between the cleaning station 103 and the second station 102. The first station 101 is closer to the cleaning station 103. The function of the first station 101 is to increase the contact pressure between the driving roller 110 and the motor bushing 10 by generating a magnetic attraction force through the magnetic attraction component 140 when the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 for cleaning, so as to prevent the motor bushing 10 from slipping and ensure the cleaning effect. The second station 102 is farther away from the cleaning station 103. The function of the second station 102 is to release the magnetic attraction force by reducing it after cleaning. The magnetic attraction of the motor bushing 10 ensures that the conveyor 300 can smoothly transport the cleaned motor bushing 10. If the magnetic suction component 140 is directly fixed at the first station 101, it will still exert a strong magnetic force on the motor bushing 10 after cleaning, which will hinder the conveyor 300 from moving the motor bushing 10. This would prevent the motor bushing 10 from smoothly entering subsequent processes, affecting the continuity of the entire production process. Therefore, switching the magnetic suction component 140 between the two stations can achieve a smooth connection between cleaning and conveying, balancing cleaning effectiveness and process smoothness. (Reference) Figure 3 and Figure 4 In this embodiment of the invention, the magnetic attractor 140 is a common magnet. The magnetic attractor 140 is in the shape of an arc plate to fit the arc-shaped inner wall of the cavity 111 of the drive roller 110, so that the magnetic attractor 140 can rotate smoothly around the axis of the drive roller 110. At the same time, it can make the magnetic attraction force of the magnetic attractor 140 more uniform and improve the anti-slip effect.

[0027] refer to Figure 2 and Figure 6 The conveying device 300 includes two belt conveyor mechanisms 310 and two limiting plates. The two belt conveyor mechanisms 310 are parallel to each other and are both mounted on the frame 100. The two belt conveyor mechanisms 310 abut against the left and right sides of the motor bushing 10, respectively, so that the two belt conveyor mechanisms 310 can convey the motor bushing 10 from back to front. The two limiting plates are parallel to the front-back direction and are both mounted on the frame 100. The two limiting plates are respectively set corresponding to the two belt conveyor mechanisms 310, and the area between the two limiting plates is used for the movement of the motor bushing 10. The two belt conveyor mechanisms 310 abut against the left and right sides of the motor bushing 10, respectively, and achieve stable conveying of the motor bushing 10 from back to front through synchronous operation. The two limiting plates are corresponding to the two belt conveyor mechanisms 310, and the area between the two limiting plates forms a channel for the movement of the motor bushing 10. They can limit the movement of the motor bushing 10 during the conveying process, prevent the motor bushing 10 from deviating during the conveying process, and ensure the conveying accuracy of the motor bushing 10. The belt conveyor mechanism 310 is a common conveyor mechanism, and will not be described in detail here.

[0028] refer to Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The motor bushing pre-cleaning equipment also includes a mounting frame 160 that is slidably connected to the frame 100. A support roller group 150 is disposed on the mounting frame 160. The mounting frame 160 is connected to the magnetic suction member 140 through a transmission mechanism 130. The mounting frame 160 can move closer to or further away from the drive roller 110, so that the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 at the cleaning station 103 and the magnetic suction member 140 rotates from the second station 102 to the first station 101, or the support roller group 150 and the drive roller 110 release the motor bushing 10 and the magnetic suction member 140 rotates from the first station 101 to the second station 102. In this embodiment of the invention, the support roller assembly 150 is mounted on the mounting frame 160, which serves as the mounting carrier for the support roller assembly 150. The mounting frame 160 is slidably connected to the frame 100 via a common slider-rail connection method, and can move in the left-right direction. The motor shaft sleeve pre-cleaning device also includes a first linear cylinder 190. The cylinder body of the first linear cylinder 190 is connected to the frame 100, and the piston rod of the first linear cylinder 190 is connected to the mounting frame 160. The first linear cylinder 190 is used to drive the mounting frame 160 to move in the left-right direction, so that the mounting frame 160 and the support roller assembly 150 on the mounting frame 160 can move closer to or further away from the drive roller 110. The support roller assembly 150 is movably connected to the frame 100 via the mounting frame 160. The support roller assembly 150 is connected to the magnetic suction component 140 via the mounting frame 160 and the transmission mechanism 130, thereby enabling the rotation of the magnetic suction component 140. The mounting frame 160 plays a transmission connection role. By connecting with the transmission mechanism 130, it transmits its own sliding motion to the magnetic suction component 140, thereby driving the magnetic suction component 140 to switch between the first station 101 and the second station 102.

[0029] refer to Figures 6 to 9The brush cleaning device 200 includes a first brush mechanism and a second brush mechanism. The first brush mechanism is mounted on the mounting frame 160. When the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 at the cleaning station 103, the first brush mechanism brushes the outer wall of the motor bushing 10. The second brush mechanism is mounted on the frame 100. The second brush roller 220 of the second brush mechanism can be inserted upward into the motor bushing 10 at the cleaning station 103 and brush its inner wall. The first brush mechanism includes a first motor 230 and a first brush roller 210. The first motor 230 is mounted on the mounting frame 160. The upper and lower ends of the first brush roller 210 are rotatably connected to the mounting frame 160. When the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 at the cleaning station 103, the first brush roller 210 abuts against the outer wall of the motor bushing 10. The first motor 230 is used to drive the first brush roller 210 to rotate so that the first brush roller 210 brushes the outer wall of the motor bushing 10. The second brush mechanism includes a second brush roller 220 and a lifting drive 240. The lifting drive 240 is mounted on the frame 100 and can drive the second brush roller 220 to rise so that the upper end of the second brush roller 220 passes through the area between the two belt conveyor mechanisms 310 and is inserted into the motor bushing 10 at the cleaning station 103. When the drive roller 110 drives the motor bushing 10 to rotate, the second brush roller 220 brushes the inner wall of the motor bushing 10.

[0030] Understandably, after the motor bushing 10 is conveyed to the cleaning station 103, the mounting bracket 160, which is slidably connected to the frame 100, drives the support roller group 150 to move towards the drive roller 110 until the support roller group 150 and the drive roller 110 together clamp the motor bushing 10 at the cleaning station 103. At this time, the bristles on the first brush roller 210 are in contact with the outer wall of the motor bushing 10 at the cleaning station 103. Then, the drive roller 110 rotates, causing the motor bushing 10 to rotate. The first motor 230 starts and drives the first brush roller 210 to rotate, and the first brush roller 210 brushes the outer wall of the motor bushing 10. While the support roller group 150 and the drive roller 110 are clamping the motor bushing 10 at the cleaning station 103, the lifting drive 240 starts and drives the second brush roller 220 to rise, so that the upper end of the second brush roller 220 passes through the area between the two belt conveyor mechanisms 310 and inserts into the cleaning station 103. Inside the motor bushing 10 at the cleaning station 103, as the drive roller 110 rotates, causing the motor bushing 10 to rotate, the motor bushing 10 rotates relative to the second brush roller 220. The second brush roller 220 inserted inside the motor bushing 10 then brushes the inner wall of the motor bushing 10, thereby causing the first brush roller 210 and the second brush roller 220 to simultaneously brush and clean the outer and inner walls of the motor bushing 10, respectively. After cleaning is completed, the first motor 230 stops working, the first brush roller 210 stops rotating, the lifting drive component 240 drives the second brush roller 220 to descend and disengage from the motor bushing 10, and the mounting frame 160 drives the support roller group 150 to move away from the drive roller 110, releasing the clamping of the support roller group 150 and the drive roller 110 on the motor bushing 10. The two belt conveyor mechanisms 310 continue to transport the cleaned motor bushing 10 forward to the subsequent final cleaning equipment, completing the entire pre-cleaning process.

[0031] It should be explained that the width of the area between the two belt conveyor mechanisms 310 is greater than the inner diameter of the motor bushing 10 but less than its outer diameter. This width, less than the outer diameter, ensures the motor bushing 10 is stably placed on the two belt conveyor mechanisms 310, preventing it from falling between the belts and ensuring stable conveying. The width, greater than the inner diameter, provides sufficient upward space for the second brush roller 220, ensuring its upper end can smoothly pass through the area between the two belt conveyor mechanisms 310 and accurately insert into the motor bushing 10, effectively brushing the inner wall of the motor bushing 10 without affecting the normal conveying of the motor bushing 10 by the belt conveyor mechanism 310. On the other hand, after releasing the clamping of the motor bushing 10 by the support roller group 150 and the drive roller 110, the lifting drive component 240 drives the second brush roller 220 to descend and be pulled out from the area between the two belt conveyor mechanisms 310, thus avoiding interference with the conveying of the motor bushing 10 by the second brush roller 220.

[0032] refer to Figure 8 and Figure 10 The second brush mechanism also includes a linear drive 250, which is mounted on the frame 100. The linear drive 250 can drive the second brush roller 220 to move backward so that the upper end of the second brush roller 220 moves to below the motor bushing 10 at the cleaning station 103. When the lifting drive 240 drives the second brush roller 220 to descend, the linear drive 250 can synchronously drive the second brush roller 220 to move forward so that the second brush roller 220 drives the motor bushing 10 at the cleaning station 103 to move forward and disengage the motor bushing 10 from the drive roller 110. Understandably, before the motor bushing 10 reaches the cleaning station 103, the linear drive 250 drives the second brush roller 220 to move backward, so that the second brush roller 220 moves to below the cleaning station 103; after the motor bushing 10 moves to the cleaning station 103, the upper end of the second brush roller 220 is aligned with the motor bushing 10 at the cleaning station 103; after the support roller group 150 and the drive roller 110 jointly hold the motor bushing 10 at the cleaning station 103, the lifting drive 240 drives the second brush roller 220 to rise, so that the second brush roller 220 is inserted into the motor bushing 10.

[0033] After cleaning the outer and inner walls of the motor bushing 10, the mounting bracket 160 moves away from the drive roller 110, causing the support roller group 150 to loosen from the motor bushing 10. Then, the lifting drive 240 drives the second brush roller 220 downwards, and the linear drive 250 simultaneously drives the second brush roller 220 forward. During this forward movement, the second brush roller 220 inserted into the motor bushing 10 can drive the motor bushing 10 forward, causing the motor bushing 10 to disengage from the drive roller 110. The second brush roller 220 then... The second brush roller 220 descends to its position under the drive of the lifting drive 240, and simultaneously moves forward to its position under the drive of the linear drive 250. The upper end of the second brush roller 220 is completely pulled out of the motor bushing 10, and the second brush roller 220 stops driving the motor bushing 10 to move forward. At this time, the motor bushing 10 is completely disengaged from the drive roller 110 and moves away from the drive roller 110. Then, the linear drive 250 drives the second brush roller 220 to move backward to reset, so that the second brush roller 220 stays below the cleaning station 103 to wait for the next motor bushing 10 to be cleaned. By synchronously cooperating with the linear drive component 250 and the lifting drive component 240, the motor bushing 10 is moved forward while the second brush roller 220 is lowered and reset. This effectively prevents the motor bushing 10 from being attracted to the drive roller 110 by the magnetic suction component 140 at the second station 102, thus eliminating the problem of magnetic interference with the normal conveying of the motor bushing 10, ensuring the smooth progress of the pre-cleaning process, and fundamentally solving the problem of the motor bushing 10 being stuck due to magnetic attraction.

[0034] In this embodiment of the invention, the second brush mechanism further includes a slide table 260 and a lifting frame 270. The slide table 260 is slidably connected to the frame 100 in the front-to-back direction via a common slider-rail connection method. The lifting frame 270 is vertically connected to the slide table 260 via a common guide sleeve-guide rod connection method. The lower end of the second brush roller 220 is connected to the lifting frame 270, meaning the second brush roller 220 will not rotate relative to the lifting frame 270. The lifting drive component 240 is a common lifting cylinder, linearly driven. The actuator 250 is a common second linear cylinder. The cylinder body of the second linear cylinder is connected to the frame 100, and the piston rod of the second linear cylinder is connected to the slide table 260. The second linear cylinder is used to drive the slide table 260 to slide in the front-back direction, thereby driving the second brush roller 220 to move in the front-back direction. The cylinder body of the lifting cylinder is connected to the slide table 260, and the piston rod of the lifting cylinder is connected to the lifting frame 270. The lifting cylinder is used to drive the lifting frame 270 to lift up and down, thereby driving the second brush roller 220 to move in the up-down direction.

[0035] refer to Figure 8 , Figure 9 and Figure 11The brush cleaning device 200 also includes a vacuum generator, a dust filter, a dust collection housing 280, and a lever (not shown in the figure). The dust collection housing 280 is mounted on the mounting bracket 160. A portion of the structure of the first brush roller 210 extends into the dust collection housing 280. The lever is parallel to the vertical direction and located inside the dust collection housing 280, with the lever abutting against the bristles of the first brush roller 210. The second brush roller 220 includes a roller body 221 and multiple brush strips 223. The lower end of 1 is connected to the output end of the lifting drive 240 (i.e., the lifting frame 270). Multiple brush strips 223 are distributed circumferentially around the axis of the roller body 221 on the outer wall of the roller body 221. A negative pressure cavity is formed inside the roller body 221. Multiple suction holes 222 communicating with the negative pressure cavity are evenly distributed on the outer wall of the roller body 221. The vacuum generator and the dust collection filter are both installed on the frame 100. The vacuum generator is connected to the dust collection cover 280 and the negative pressure cavity through the dust collection filter. Understandably, during the cleaning process, the vacuum generator starts simultaneously and connects to the dust collection filter through pipelines, creating negative pressure in the negative pressure chambers inside the dust collection housing 280 and the roller body 221 of the second brush roller 220. When the first brush roller 210 rotates to brush the outer wall of the motor bushing 10, part of its structure is located inside the dust collection housing 280. During rotation, it abuts against the lever inside the dust collection housing 280. The lever scrapes off the impurities attached to the bristles of the first brush roller 210, and the scraped impurities are sucked into the dust collection filter by the negative pressure inside the dust collection housing 280. At the same time, the brush strips 223 of the second brush roller 220 brush the inner wall of the motor bushing 10, and the brushed-off impurities are sucked into the negative pressure chamber by the suction holes 222 evenly distributed on the outer wall of the roller body 221, and then transported to the dust collection filter through pipelines. Impurities generated by the first brush roller 210 and the second brush roller 220 can be collected in a timely manner, preventing them from falling into the equipment or re-adhering to the surface of the motor bushing 10, thus improving the pre-cleaning effect.

[0036] As an embodiment of the present invention, the second brush mechanism further includes a deflector ring (not shown in the figure). The deflector ring is disposed on the frame 100 and located below the cleaning station 103, so that the second brush roller 220 can be inserted into the deflector ring and the motor bushing 10 at the cleaning station 103 in sequence. The deflector ring is used to remove impurities attached to the brush strips 223 of the second brush roller 220. It can be understood that the deflector ring is disposed on the frame 100 and located below the cleaning station 103. When the second brush roller 220 rises, it can be inserted into the deflector ring and the motor bushing 10 in sequence. After cleaning, when the second brush roller 220 descends and disengages from the motor bushing 10, the deflector ring can remove impurities attached to the bristles (brush strips 223) of the second brush roller 220 in a timely manner, preventing impurities from falling into the equipment or re-attaching to the surface of the motor bushing 10 as the second brush roller 220 moves, further improving the impurity collection effect and pre-cleaning quality; at the same time, it can prevent the brush strips 223 from clogging the suction hole 222 due to excessive attached impurities and reducing the brushing efficiency. In this embodiment of the invention, a dust collection box (not shown in the figure) is provided on the lifting frame 270. The dust collection box is located below the dial ring and is used to collect impurities that fall from the dial ring.

[0037] refer to Figure 8 and Figure 9The drive roller 110 has a first limiting ring plate 112 on its outer wall. When the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 at the cleaning station 103, the first limiting ring plate 112 is located above the motor bushing 10 and can abut against the motor bushing 10. The support roller group 150 includes two support rollers 151, and the upper and lower ends of the two support rollers 151 are rotatably connected to the mounting frame 160. The outer walls of the two support rollers 151 are each provided with a second limiting ring plate 152. The drive roller 110 and the two support rollers 151 can jointly clamp the motor bushing 10 at the cleaning station 103, so that both second limiting ring plates 152 are located above the motor bushing 10 and can abut against the motor bushing 10. As the mounting bracket 160 moves closer to or further away from the drive roller 110, it simultaneously drives the two support rollers 151 closer to or further away from the drive roller 110. After the mounting bracket 160 moves into position towards the drive roller 110, the drive roller 110 and the two support rollers 151 simultaneously clamp the motor bushing 10, forming a stable three-point clamping of the motor bushing 10. During the process of the drive roller 110 driving the motor bushing 10 to rotate, the two support rollers 151 also rotate synchronously under the drive of the motor bushing 10, which will not be described in detail here. The outer wall of the drive roller 110 is provided with a first limiting ring plate 112, and the outer walls of the two support rollers 151 are provided with second limiting ring plates 152. When the support roller group 150 and the drive roller 110 jointly clamp the motor bushing 10 at the cleaning station 103, the first limiting ring plate 112 and the two second limiting ring plates 152 are all located above the motor bushing 10 at the cleaning station 103. The first limiting ring plate 112 and the two second limiting ring plates 152 can all abut against the motor bushing 10. The three cooperate with each other to form a multi-point limiting on the motor bushing 10 from above, effectively restricting the upward displacement of the motor bushing 10.

[0038] During the upward insertion of the second brush roller 220 into the motor bushing 10, without the constraint of the first limiting ring plate 112 and the two second limiting ring plates 152, the force exerted by the rising second brush roller 220 can easily cause the motor bushing 10 to rise synchronously, resulting in the motor bushing 10 disengaging from the clamping position and shifting. Furthermore, it can prevent the upper end of the second brush roller 220 from fully inserting into the motor bushing 10, making it difficult for the upper end of the second brush roller 220 to align with the cleaning position on the inner wall of the motor bushing 10, directly affecting the motor bushing. The smooth operation of the inner wall cleaning of sleeve 10 may result in blind spots or missed areas. At the same time, after the motor sleeve 10 is driven to rise, the clamping pressure between the motor sleeve 10 and the drive roller 110 will change, which can easily cause the motor sleeve 10 to slip, disrupting the stable rotation of the motor sleeve 10 driven by the drive roller 110. It will also cause the contact position between the first brush roller 210 and the second brush roller 220 and the motor sleeve 10 to deviate, making it impossible to achieve uniform and comprehensive brushing and significantly reducing the pre-cleaning quality of the motor sleeve 10. The first limiting ring plate 112 and the two second limiting ring plates 152 can limit the upward movement of the motor bushing 10, preventing the motor bushing 10 from being driven upward by the second brush roller 220. This ensures that the motor bushing 10 is always stably in the cleaning position 103 and maintains a fixed posture, ensuring that the second brush roller 220 can be accurately and smoothly inserted into the motor bushing 10 to complete the brushing. This ensures that the first brush roller 210 and the second brush roller 220 can achieve uniform and comprehensive brushing of the motor bushing 10, thus ensuring the quality of pre-cleaning.

[0039] refer to Figure 6 , Figure 7 and Figure 9 The transmission mechanism 130 includes a rack 131, a gear 132, and a compression spring 133. The gear 132 is rotatably connected to the frame 100 and connected to the magnetic suction member 140. The gear 132 is coaxially arranged with the drive roller 110. The rack 131 is slidably connected to the frame 100 and meshes with the gear 132. The compression spring 133 is disposed between one end of the rack 131 and the frame 100. The compression spring 133 is used to drive the rack 131 to move toward the mounting bracket 160, so that the other end of the rack 131 is connected to the mounting bracket 160. When the mounting bracket 160 is close to the drive roller 110, the mounting bracket 160 pushes the rack 131 to move, and the rack 131 drives the gear 132 to rotate, so that the gear 132 drives the magnetic attractor 140 from the second station 102 to the first station 101. When the mounting bracket 160 is away from the drive roller 110, the compression spring 133 drives the rack 131 to move, and the rack 131 drives the gear 132 to rotate, so that the gear 132 drives the magnetic attractor 140 from the first station 101 to the second station 102.

[0040] Understandably, in the initial state, the compression spring 133 is in the extended state, driving the rack 131, which is slidably connected to the frame 100, to move towards the mounting frame 160, so that the other end of the rack 131 abuts against the mounting frame 160. At this time, the gear 132, which meshes with the rack 131, is rotatably connected to the frame 100, and is coaxially arranged with the drive roller 110, is in the initial position. The magnetic suction component 140 connected to the gear 132 stays at the second station 102, and the support roller group 150 on the mounting frame 160 is in a position away from the drive roller 110. Position 10; When it is necessary to clamp and clean the motor bushing 10 at cleaning station 103, the mounting bracket 160 slides towards the drive roller 110, causing the support roller group 150 on it to move towards the drive roller 110 simultaneously. At the same time, the mounting bracket 160 pushes the rack 131 that is opposed to it to move away from the mounting bracket 160. During the movement of the rack 131, it drives the gear 132 that meshes with it to rotate around its own axis. Since the gear 132 is connected to the magnetic suction component 140, when the gear 132 rotates, it synchronously drives the magnetic suction component 140 to rotate around the drive roller. The axis of 110 rotates until the mounting frame 160 moves into position. The support roller group 150 and the drive roller 110 together clamp the motor bushing 10 at the cleaning station 103. At this time, the magnetic suction component 140 just rotates from the second station 102 to the first station 101 and stops. The magnetic suction component 140 generates a magnetic attraction force on the motor bushing 10 to increase the contact pressure between the motor bushing 10 and the drive roller 110. After cleaning is completed, the mounting frame 160 slides away from the drive roller 110, driving the support roller group 150 to move away from the drive roller 110 in sync. The thrust of the mounting bracket 160 on the rack 131 disappears, the compression spring 133 returns to its original deformation and drives the rack 131 to move toward the mounting bracket 160 again. The movement of the rack 131 drives the gear 132 to rotate in the opposite direction. The gear 132 then drives the magnetic suction component 140 to rotate from the first station 101 to the second station 102. After the mounting bracket 160 moves into place, the magnetic suction component 140 rotates to the second station 102 and stays there. The magnetic attraction force of the magnetic suction component 140 on the motor bushing 10 decreases, and the support roller group 150 and the drive roller 110 release their clamping on the motor bushing 10.

[0041] refer to Figure 6 , Figure 7 and Figure 8The motor bushing pre-cleaning device also includes a swing arm 170 and a flexible scraper 180. One end of the swing arm 170 is connected to the flexible scraper 180, and the other end of the swing arm 170 is connected to a gear 132. The gear 132 can drive the swing arm 170 to swing, so that the swing arm 170 drives the flexible scraper 180 to rotate around the axis of the drive roller 110. When the gear 132 drives the magnetic suction component 140 from the second station 102 to the first station 101, the gear 132 drives the flexible scraper 180 to rotate to the cleaning station 103 through the swing arm 170, so that the flexible scraper 180 abuts against the outer wall of the motor bushing 10 at the cleaning station 103. When the gear 132 drives the magnetic suction component 140 from the first station 101 to the second station 102, the gear 132 drives the flexible scraper 180 away from the cleaning station 103 through the swing arm 170.

[0042] Understandably, when the mounting bracket 160 moves towards the drive roller 110, the mounting bracket 160 pushes the rack 131 to move, the rack 131 drives the gear 132 to rotate, and the gear 132 drives the magnetic suction component 140 to rotate from the second station 102 to the first station 101, generating a magnetic attraction force on the motor bushing 10 at the cleaning station 103 to increase the contact pressure. At the same time, the gear 132 drives the flexible scraper 180 to swing synchronously around the axis of the drive roller 110 through the swing arm 170 connected thereto. Until the flexible scraper 180 rotates to the cleaning station 103 and abuts against the outer wall of the motor bushing 10 at that station, at this time the drive roller 110 drives the motor bushing 10 to rotate, and the flexible scraper 180 cooperates. The first brush roller 210 assists in scraping the outer wall of the motor bushing 10, loosening stubborn impurities adhering to it and facilitating thorough cleaning. When cleaning is complete and the mounting bracket 160 moves away from the drive roller 110, the spring 133 drives the rack 131 to reset. The rack 131 then drives the gear 132 to rotate in the opposite direction. The gear 132, while moving the magnetic suction component 140 from the first station 101 to the second station 102 and reducing the magnetic attraction to the motor bushing 10, simultaneously drives the flexible scraper 180 away from the cleaning station 103 via the swing arm 170, releasing it from contact with the motor bushing 10 and not affecting subsequent conveying operations. No additional drive components are needed; the rotation of the gear 132 synchronizes the switching action of the flexible scraper 180 and the magnetic suction component 140, and the scraping action of the flexible scraper 180 effectively improves the cleaning effect on the outer wall of the motor bushing 10. The flexible scraper 180 can be a common silicone scraper.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A motor shaft sleeve pre-cleaning device, characterized in that, include: The frame is equipped with a cleaning station, a conveying device and a brush cleaning device. The conveying device is used to transport the motor shaft sleeve from back to front to the cleaning station. The drive roller has an internal cavity and is rotatably connected to the frame. The cavity has a first station and a second station, with the second station being farther away from the cleaning station relative to the first station. The support roller assembly can move toward the drive roller, so that the support roller assembly and the drive roller together clamp the motor bushing at the cleaning station, and the drive roller drives the motor bushing to rotate. The brush cleaning device brushes the outer and inner walls of the motor bushing. The support roller assembly can move away from the drive roller, so that the support roller assembly and the drive roller release the motor bushing. A magnetic suction element is rotatably connected to the frame and disposed in the receiving cavity about the axis of the drive roller. The magnetic suction element can be rotated to the first station or the second station. The support roller group is connected to the magnetic suction element through a transmission mechanism. When the support roller group moves toward the drive roller, the support roller group drives the magnetic suction member from the second station to the first station through the transmission mechanism, so that the magnetic suction member magnetically attracts the motor bushing at the cleaning station, thereby increasing the contact pressure between the drive roller and the motor bushing. When the support roller group moves away from the drive roller, the support roller group drives the magnetic suction member from the first station to the second station through the transmission mechanism, thereby reducing the magnetic attraction force of the magnetic suction member on the motor bushing.

2. The motor shaft sleeve pre-cleaning device according to claim 1, characterized in that: It also includes a mounting bracket slidably connected to the frame, the support roller assembly being disposed on the mounting bracket, the mounting bracket being connected to the magnetic suction member via the transmission mechanism, the mounting bracket being able to move closer to or further away from the drive roller, so that the support roller assembly and the drive roller together clamp the motor bushing at the cleaning station and the magnetic suction member moves from the second station to the first station, or so that the support roller assembly and the drive roller release the motor bushing and the magnetic suction member moves from the first station to the second station.

3. The motor shaft sleeve pre-cleaning device according to claim 2, characterized in that: The transmission mechanism includes a rack, a gear, and a compression spring. The gear is rotatably connected to the frame and connected to the magnetic attractor. The gear is coaxially arranged with the drive roller. The rack is slidably connected to the frame and meshes with the gear. The compression spring is disposed between one end of the rack and the frame. The compression spring is used to drive the rack to move toward the mounting frame so that the other end of the rack abuts against the mounting frame. When the mounting frame is close to the drive roller, the mounting frame pushes the rack to move, and the rack drives the gear to rotate, so that the gear drives the magnetic attractor from the second station to the first station. When the mounting frame is away from the drive roller, the compression spring drives the rack to move, and the rack drives the gear to rotate, so that the gear drives the magnetic attractor from the first station to the second station.

4. The motor shaft sleeve pre-cleaning device according to claim 3, characterized in that: It also includes a swing arm and a flexible scraper. One end of the swing arm is connected to the flexible scraper, and the other end of the swing arm is connected to the gear. The gear can drive the swing arm to swing, so that the swing arm drives the flexible scraper to rotate around the axis of the drive roller. When the gear drives the magnetic attractor from the second station to the first station, the gear drives the flexible scraper to rotate to the cleaning station through the swing arm, so that the flexible scraper abuts against the outer wall of the motor bushing at the cleaning station. When the gear drives the magnetic attractor from the first station to the second station, the gear drives the flexible scraper away from the cleaning station through the swing arm.

5. The motor shaft sleeve pre-cleaning device according to claim 2, characterized in that: The brush cleaning device includes a first brush mechanism and a second brush mechanism. The first brush mechanism is mounted on the mounting frame. When the support roller group and the drive roller together clamp the motor bushing at the cleaning station, the first brush mechanism brushes the outer wall of the motor bushing. The second brush mechanism is mounted on the frame and can be inserted upward into the motor bushing at the cleaning station to brush the inner wall of the motor bushing.

6. The motor shaft sleeve pre-cleaning device according to claim 5, characterized in that: The second brush mechanism includes a second brush roller and a lifting drive component. The lifting drive component is mounted on the frame and can drive the second brush roller to rise so that the upper end of the second brush roller is inserted into the motor bushing at the cleaning station. When the drive roller drives the motor bushing to rotate, the second brush roller brushes the inner wall of the motor bushing. The lifting drive component can drive the second brush roller to fall so that the upper end of the second brush roller is pulled out from the motor bushing.

7. The motor shaft sleeve pre-cleaning device according to claim 6, characterized in that: The second brush mechanism further includes a linear drive component mounted on the frame. The linear drive component can drive the second brush roller to move backward, so that the upper end of the second brush roller moves to below the motor bushing at the cleaning station. When the lifting drive component drives the second brush roller to descend, the linear drive component can synchronously drive the second brush roller to move forward, so that the second brush roller drives the motor bushing at the cleaning station to move forward and disengage the motor bushing from the drive roller.

8. The motor shaft sleeve pre-cleaning device according to claim 5, characterized in that: The outer wall of the drive roller is provided with a first limiting ring plate. When the support roller group and the drive roller jointly clamp the motor bushing at the cleaning station, the first limiting ring plate is located above the motor bushing and can abut against the motor bushing.

9. The motor shaft sleeve pre-cleaning device according to claim 5, characterized in that: The support roller assembly includes two support rollers, both the upper and lower ends of which are rotatably connected to the mounting frame. Each of the two support rollers has a second limiting ring plate on its outer wall. The drive roller and the two support rollers can jointly clamp the motor bushing at the cleaning station so that both second limiting ring plates are located above the motor bushing and can abut against the motor bushing.

10. The motor shaft sleeve pre-cleaning device according to claim 1, characterized in that: The conveying device includes two belt conveyor mechanisms, which are parallel to each other and are both mounted on the frame. The two belt conveyor mechanisms abut against the left and right sides of the motor shaft sleeve, respectively, so that the two belt conveyor mechanisms can convey the motor shaft sleeve from back to front.

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