Rotor magnetizing device and magnetizing method thereof

Abstract

The present invention provides a rotor magnetizing device and magnetizing method. The rotor magnetizing device includes a base and a turntable structure. The turntable rotates, driving the rotor on the turntable to enter various processing stations in sequence. The processing stations include a loading and unloading integrated station, a magnetizing station, and a surface magnetism detection station. The loading and unloading integrated station is equipped with a material receiving mechanism and a detection mechanism. The material receiving mechanism receives the rotor and transfers it to the turntable. The detection mechanism includes a height measuring unit and a direction measuring unit. The height measuring unit detects the height of the rotor, and the direction measuring unit detects the circumferential orientation of the rotor. The loading and unloading integrated station is equipped with a demagnetization mechanism to demagnetize the ends of the magnetized rotor. The magnetizing station is equipped with a magnetizing box and a rotor positioning mechanism. The rotor positioning mechanism locks the rotor's orientation and lifts the rotor to the desired position within the magnetizing box. The magnetizing box magnetizes the rotor. The surface magnetism detection station performs surface magnetism detection on the rotor. The rotor magnetizing device provided by the present invention simplifies the structure and improves magnetization efficiency and accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor magnetization, and in particular to a rotor magnetization device and a magnetization method thereof. Background Art

[0002] During the manufacturing process of the motor rotor, the main section of the rotor needs to be magnetized to make it magnetic. Figure 1 The rotor shown has a main section 101 and end sections 102 formed at both ends of the main section 101. End sections 102 are used for assembly and have a smaller diameter than the main section 101. The main section 101 has an end surface 103 formed on one end facing the end. Each end has several steps, corresponding to the stepped surfaces at each end of the rotor. The steps have assembly slots 104 (which serve as retaining slots in this embodiment of the present invention). Both end surfaces of the rotor have sleeve holes for easy clamping by the positioning mechanism. The rotor is magnetized using a magnetizing device. During magnetization, the entire rotor is placed in the magnetizing device. After magnetization, the magnetization amount is tested, and the rotor ends are demagnetized to prevent the magnetism of the rotor ends from affecting the rotor's performance. The existing magnetization process of the rotor generally includes loading, magnetization, magnetization amount detection, surface magnetization detection (i.e., detection of the number of magnetic steels and magnetic flux saturation), demagnetization, and unloading processes; the processing production line adopts assembly line type and turntable type, among which the turntable type occupies less space and is more compact as a whole, which is more conducive to processing operations and is widely adopted in the industry. For example, the magnetization, demagnetization and surface magnetization integrated equipment disclosed in CN202410565961.0 and the processing device for rotor production disclosed in CN202321016114 both adopt a turntable structure. In the above two patents, there are many overall workstations, such as a separate workstation for loading, a workstation for magnetization, and a workstation for demagnetization, which makes the overall structure relatively complex; in addition, even for the same batch of rotors, the height of the main section of the rotor may be slightly different, and the saturation or yield of the rotor magnetization is greatly affected by the angle and height position of the rotor in the magnetization device. It is necessary to ensure the position is accurate, otherwise it will affect the magnetization performance of the rotor and fail to meet the requirements.

[0003] The current rotor magnetic processing magnetic device basically fixes the rotor in a corresponding position inside the magnetizing device during magnetization, and cannot adjust the rotor installation height according to the different rotor lengths. Therefore, the existing rotor magnetizing device may have length deviations for different rotors, resulting in low magnetization accuracy. Summary of the Invention

[0004] In view of the above, it is necessary to provide a rotor magnetizing device that can simplify the structure and improve the magnetizing accuracy.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A rotor magnetizing device includes a machine base and a turntable structure. The machine base includes a machine platform and a frame mounted on the machine platform. The turntable structure is mounted on the machine platform and includes a turntable and a tray structure mounted on the turntable. A plurality of processing stations are arranged around the turntable on the machine platform. The rotor on the turntable is driven to enter each processing station in sequence by the rotation of the turntable. The processing stations include a loading and unloading integrated station, a magnetizing station, and a surface magnetism detection station.

[0007] The loading and unloading integrated station is equipped with a receiving mechanism and a detection mechanism. The receiving mechanism is used to receive the rotor and transfer it to the tray structure; the detection mechanism includes a height measuring unit and a direction measuring unit. The height measuring unit is used to detect the height of the rotor after loading, and the direction measuring unit is used to detect the circumferential direction of the rotor.

[0008] The loading and unloading integrated station is also equipped with a demagnetization mechanism, which includes a demagnetization cover to demagnetize the end of the magnetized rotor;

[0009] The magnetizing station is equipped with a magnetizing box and a rotor positioning mechanism. The rotor positioning mechanism includes a lifting mechanism and a pressing mechanism. The lifting mechanism is installed on the machine platform and is used to lift the rotor and position the rotor at the corresponding angle. The pressing mechanism is installed on the frame and is used to drive the rotor to rotate and press the rotor down. The lifting mechanism cooperates with the pressing mechanism to position the rotor in the desired direction and lift it to the required position in the magnetizing box. The magnetizing box magnetizes the rotor and detects the magnetic flux after magnetization.

[0010] The surface magnetic detection station is provided with a support assembly and a surface magnetic detection assembly, which support and lift the two ends of the rotor to a preset position. The surface magnetic detection assembly can be lifted and lowered on one side of the support assembly to perform surface magnetic detection on the rotor.

[0011] In addition, the present invention provides a magnetizing method for the rotor magnetizing device.

[0012] A demagnetization method for a rotor magnetizing device, the specific process of which is as follows:

[0013] A. The turntable moves to the loading and unloading integrated station, the rotor is loaded, the receiving mechanism receives the rotor and places it on the tray structure; the detection mechanism detects the height of the rotor;

[0014] B. The turntable moves to the magnetization station. The lifting mechanism lifts the rotor and positions it to determine its orientation. Based on the rotor height detected by the height measurement unit, the required descending stroke of the pressing mechanism is calculated. The pressing mechanism then presses the rotor down to the corresponding height within the magnetization box. After magnetization, the lifting and pressing mechanisms rise, lifting and lowering the rotor to the tray structure. The rotor is then placed on the tray structure, and the lifting and pressing mechanisms separate from the rotor.

[0015] C. Move the turntable to the surface magnetic detection station to perform surface magnetic detection on the rotor;

[0016] D. The turntable moves to the loading and unloading integrated station. The receiving mechanism rises and receives the rotor to the preset height. The direction-finding unit starts to detect the circumferential orientation of the rotor to ensure the rotor's accurate orientation. The demagnetization mechanism is started, and the demagnetization cover descends and fits over the top of the rotor to demagnetize the top of the rotor. After demagnetization is completed, the demagnetization cover rises and moves out of the top of the rotor to remove the rotor.

[0017] The beneficial effects of the present invention are:

[0018] The rotor magnetizing device provided by the present invention detects the height of the rotor at the integrated loading and unloading station, and then performs a corresponding displacement according to the detected height at the magnetizing station and sends it into the magnetizing box. The lifting mechanism and the pressing mechanism cooperate to ensure the orientation and height of the rotor, so that the rotor magnetization position is accurate, and similarly, the height of the rotor is accurate during demagnetization. A direction finding unit is provided at the integrated loading and unloading station to detect the circumferential orientation of the rotor end during demagnetization, thereby ensuring the accurate demagnetization position of the rotor. In addition, the rotor magnetizing device of the present invention integrates the functions of the loading station, the demagnetization station, and the unloading station into one station, which greatly simplifies the structure of the rotor magnetizing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional diagram of the rotor;

[0020] Figure 2 A first-perspective perspective view of the rotor magnetizing device;

[0021] Figure 3 This is a three-dimensional diagram of the turntable installed on the machine (part of the tray structure is not covered);

[0022] Figure 4 for Figure 3 An enlarged view of point A is shown;

[0023] Figure 5 It is a three-dimensional diagram of the material receiving mechanism;

[0024] Figure 6 A three-dimensional diagram of a demagnetization mechanism mounted on a frame;

[0025] Figure 7 It is a three-dimensional diagram of the demagnetization mechanism;

[0026] Figure 8 A three-dimensional diagram of the transverse movement module of the demagnetization mechanism;

[0027] Figure 9 A second perspective view of the rotor magnetizing device;

[0028] Figure 10 This is a three-dimensional diagram of the lifting mechanism from the first perspective;

[0029] Figure 11 This is a stereoscopic diagram of the lifting mechanism from the second perspective;

[0030] Figure 12 It is a three-dimensional diagram of the receiving tube structure;

[0031] Figure 13 It is a three-dimensional diagram of the frame cooperating with the pressing mechanism;

[0032] Figure 14 A three-dimensional diagram of the pressing mechanism pressing the rotor;

[0033] Figure 15 A three-dimensional diagram of the driving mechanism and the crimping structure;

[0034] Figure 16 This is a three-dimensional diagram of the surface magnetic detection station structure and the turntable installed on the machine platform;

[0035] Figure 17 for Figure 16 An enlarged view of point B is shown.

[0036] Description of reference numerals:

[0037] Machine base 10; turntable structure 20; machine table 11; frame 12; turntable 21; tray structure 22; perforation 211; tray 221; push member 222; bearing hole 2211; notch 2212; slide rail 223; material receiving mechanism 30; detection mechanism 40; fixed seat 31; material receiving barrel 32; lifting drive member 33; support rod 311; top plate 312; guide column 314; mounting plate 315; lifting plate 316; through hole 3121; monitoring member 317; rotor driving mechanism 34; belt rotating motor 341; detection mechanism 40; lifting guide seat 42; transverse guide seat 43; height measuring unit 44; direction finding unit 45; support frame 411; frame 412; fixed plate 421; lifting slide 422; fixing seat 431; transverse plate 432; contact rod 441; magnetizing box 50; lifting mechanism 60; pressing mechanism 70; fixing frame 61; driving cylinder 62; lifting plate 63; receiving tube structure 64; fixing plate 611; fixing column 612; shaft tube 641; positioning clamping structure 642; slide bar 6421; lifting assembly 71; driving mechanism 72; crimping tube 73; guide plate 711; sliding plate 712; sliding driving member 713; driving motor 721; transmission belt 722; demagnetization mechanism 80; demagnetization cover 81; demagnetization detection member 82; support assembly 91; surface magnetism detection assembly 92; guide seat 911; lifting platform 912. DETAILED DESCRIPTION

[0038] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0039] like Figure 2 As shown, an embodiment of the present invention provides a rotor magnetizing device, including a machine base 10 and a turntable structure 20. The machine base 10 includes a machine platform 11 and a frame 12 installed on the machine platform 11. The turntable structure 20 is installed on the machine platform 11 and includes a turntable 21. A plurality of processing stations are arranged around the turntable 20 on the machine platform 11. The turntable 21 rotates, driving the rotor on the turntable 21 to enter each processing station in sequence. The processing stations include a loading and unloading integrated station, a magnetizing station and a surface magnetic detection station; the rotor to be processed is installed on the turntable at the loading and unloading integrated station by a robot, and the height of the rotor is detected; then the turntable rotates to send the rotor to the magnetizing station; the magnetizing station positions the rotor in height and angle in the magnetizing box, magnetizes the rotor and detects the magnetic flux after magnetization; then the turntable rotates to send the rotor to the surface magnetic detection station, which detects the number and saturation of the rotor's magnets; then the turntable rotates to send the rotor to the loading and unloading integrated station, which demagnetizes the end of the magnetized rotor and removes the rotor by a robot.

[0040] See also Figure 3 、 Figure 4 , the turntable structure 20 also includes a number of tray structures 22 arranged on the turntable 21, and a turntable driving mechanism (not shown) arranged on the bottom surface of the turntable 21 for driving the turntable 21 to rotate. The turntable 21 is rotatably mounted on the top surface of the machine 11 and is provided with a preset height. A number of through-holes 211 are provided along a circular line on the top surface of the turntable 21 adjacent to the outer circumference. The number of through-holes 211 corresponds to the number of set processing stations. The rotor magnetization device shown in this embodiment is provided with four processing stations. The four through-holes 211 corresponding to the four stations on the turntable 21 are evenly spaced and distributed in four directions. The turntable driving mechanism is mounted on the top surface of the machine 11, supports the center of the turntable 21, and can drive the turntable 21 to rotate according to the required angle, such as Figure 3 Counterclockwise O direction as shown.

[0041] The tray structure 22 is arranged corresponding to the through hole 211 for carrying and fixing the rotor; the tray structure 22 includes a tray 221 and a pusher 222. The tray 221 is slidably arranged on the top surface of the turntable 21. The tray 221 is connected to one end of the pusher 222 and is pushed to slide on the top surface of the turntable 21 by the pusher 222. A bearing hole 2211 is formed in the center of the tray 221 and a notch 2212 is formed on the outer periphery of the tray 221 to communicate with the bearing hole 2211. When the tray 21 slides to the processing station, the bearing hole 2211 is aligned with the through hole 211, and the rotor can be received. That is, the end of the rotor is inserted into the bearing hole 2211, and the tray 221 supports the main section of the rotor. When the tray 221 slides away from the processing station, the bearing hole 2211 and the through hole 211 are staggered, and the tray 221 is disengaged from the rotor at the notch 2212, and the tray 221 loses its support for the rotor. Preferably, the pusher 222 is a cylinder, and the tray 221 is connected to the end of the piston of the cylinder. Furthermore, the tray structure 22 includes a slide rail 223, which is installed on the top surface of the turntable 21 and extends to the corresponding through hole 211. The tray 221 is installed on the slide rail 223 and guided by the slide rail 223 to slide.

[0042] The rotor magnetizing device includes a loading and unloading station structure corresponding to the loading and unloading integrated station. The loading and unloading station structure includes a receiving mechanism 30 located below the turntable 21. Figure 5 The material receiving mechanism 30 includes a fixed base 31, a material receiving barrel 32, and a lifting drive 33. The fixed base 31 is fixedly mounted on the top surface of the machine 11 and is located below the turntable 21. The material receiving barrel 32 is movably mounted on the fixed base 31 and is driven to move up and down by the lifting drive 33. It can be understood that the lifting drive 33 is preferably a cylinder. Furthermore, the fixed base 31 includes a support rod 311, a top plate 312, a guide column 314 fixedly connected to the bottom surface of the top plate 312, a mounting plate 315 fixedly connected to the bottom surface of the guide column 314, and a lifting plate 316 slidably mounted on the guide column 314; the support rod 311 is fixedly mounted on the top surface of the machine 11 to support the top plate 312. The top plate 312 is provided with a through hole 3121 for the material receiving barrel 32 to pass through. The lifting drive 33 is fixedly mounted on the bottom surface of the mounting plate 315 and is used to drive the lifting plate 316 up and down. The lifting drive 33 is a pneumatic cylinder, whose piston rod extends upward through the mounting plate 315 and connects to the lifting plate 316, driving the lifting plate 316 up and down along the guide post 314. The receiving barrel 32 is used to receive the rotor, allowing the end of the rotor to be inserted into the receiving barrel 32. The outer diameter of the receiving barrel 32 is smaller than the aperture of the through-hole 211 of the turntable 21 and the aperture of the bearing hole 2211 of the tray 221. The receiving barrel 32 is rotatably mounted on the lifting plate 316 and rises and falls in conjunction with the lifting of the lifting plate 316. Furthermore, the receiving mechanism 30 includes a monitoring member 317 disposed on the top surface of the top plate 312 to monitor the elevation of the receiving barrel 32.

[0043] When the rotor is loaded, the receiving barrel 32 rises and passes through the through-hole 211 of the turntable 21 and the bearing hole 2211 of the tray 221 to receive the rotor. The end of the rotor is inserted into the receiving barrel 32. After receiving the rotor, the receiving barrel 32 begins to descend. After descending to a certain height, the main body of the rotor will be carried on the tray 221, and the rotor will be supported by the tray 221. Then the turntable 21 rotates, which will drive the rotor to the next station, namely the magnetization station.

[0044] Furthermore, the material receiving mechanism 30 includes a rotor driving mechanism 34 for driving the rotor to rotate and adjust the rotor's orientation. The rotor driving mechanism 34 includes a belt-rotating motor 341 and a conveyor belt structure. The belt-rotating motor 341 is fixedly mounted on the bottom surface of the lifting plate 316. The output shaft of the belt-rotating motor 341 extends upward and is connected to the material receiving drum 32 via the conveyor belt structure. Therefore, the output shaft of the belt-rotating motor 341 rotates, which drives the material receiving drum 32 to rotate, and then drives the rotor to rotate, thereby adjusting the rotor angle, that is, adjusting the circumferential direction position.

[0045] See also Figure 6-Figure 8 The loading and unloading station structure includes a detection mechanism 40 located above the turntable 21. The detection mechanism 40 is used to detect the height and orientation of the rotor. The detection mechanism 40 includes a lifting guide seat 42, a transverse guide seat 43, a height measuring unit 44, and a direction finding unit 45. The lifting guide seat 42 is mounted on the frame 12 and includes a fixed plate 421 and a lifting slide 422. The fixed plate 421 is fixedly mounted on the frame 12, and the lifting slide 422 is movably mounted on the fixed plate 421. It can be understood that a track and a lifting drive mechanism are provided between the fixed plate 421 and the lifting slide 422. The track is used to guide the lifting slide 422 to move up and down, and the lifting drive mechanism is used to drive the lifting slide 422 to move up and down relative to the fixed plate 421. In this embodiment, the lifting drive mechanism preferably adopts a screw drive structure. The screw motor is mounted on the fixed plate 421. The lifting slide 422 is equipped with a screw sleeve that is sleeved on the screw of the screw motor. The lifting slide 422 is driven up and down by the rotation of the screw.

[0046] The transverse guide seat 43 includes a fixed seat 431 and a transverse plate 432. The fixed seat 431 is fixedly connected to the lifting slide 422 and is driven to rise and fall by the lifting slide 422. The transverse plate 432 can be installed on the fixed seat 431 in a transverse manner, and the transverse direction is perpendicular to the lifting direction. The height measuring unit 44 includes a height measuring sensor. The height measuring sensor is installed on the transverse plate 432, and its sensing head is vertically downward to detect the height of the rotor carried on the tray 221; preferably, the height measuring sensor adopts a contact sensor, including a contact rod 441 extending downward. During detection, the transverse plate 432 moves laterally to drive the height measuring sensor to be located above the rotor, and then the lifting slide 422 moves downward. When the contact rod 441 contacts the end face of the rotor, it is triggered to detect the height of the rotor. The length of the rotor main section and the length of the rotor end can be detected.

[0047] The direction finding unit 45 is used to detect the circumferential orientation position of the rotor to determine whether the circumferential surface of the rotor is accurately at the required orientation angle. If it is not accurately oriented, it is necessary to start the rotor drive mechanism 34 to drive the rotor to rotate. The direction finding unit 45 is installed on the transverse plate 432. It uses a sensor with the sensing head facing the horizontal direction to sense the corresponding sensing position on the circumferential surface of the rotor. In this embodiment, the direction finding unit 45 uses a signal receiving sensor, which transmits a signal to the circumferential surface of the rotor, and the corresponding signal is reflected back to the direction finding unit 45 on the circumferential surface, thereby confirming whether the rotor is in the corresponding circumferential orientation position. Specifically, an axially extending detection groove (which can be an assembly groove or a process groove) is provided on the circumferential surface of the rotor. The signal sent by the direction finding unit 45 to the corresponding detection groove can confirm that the circumferential orientation of the rotor is accurate. Otherwise, the rotor needs to be driven to rotate to the corresponding precise position.

[0048] See also Figures 9-15 The rotor magnetizing device includes a magnetizing station structure corresponding to the magnetizing station. The magnetizing station structure includes a magnetizing box 50 and a rotor positioning mechanism. The magnetizing box 50 is a magnetizing device, which is fixed on the machine 11 and located on the bottom surface of the turntable 21. It has a processing channel that runs vertically through the machine to allow the rotor to rise or fall to a preset position in the processing channel to magnetize the rotor, and to detect the magnetic flux of the rotor after magnetization. The magnetizing box 50 can be purchased directly, and its structure is not described here. In the present invention, two adjacent magnetizing stations are provided, which mainly serve a preparatory purpose. Because the replacement of the magnetizing box 50 is relatively troublesome, two specifications of rotors can be placed at intervals, or the rotor of the same specification can be accelerated to run at a beat. In this way, each time the rotor rotates 90 degrees, magnetization is performed when the rotor needs to be rotated to the corresponding position, which can improve production efficiency.

[0049] The rotor positioning mechanism is used to angularly position the rotor in the magnetization station to ensure accurate rotor magnetization. The rotor positioning mechanism includes a lifting mechanism 60 and a pressing mechanism 70. The lifting mechanism 60 is mounted on the machine platform 11 and is used to lift the rotor and position the rotor. The pressing mechanism 70 is mounted on the frame 12 and is used to drive the rotor and press it down. The lifting mechanism 60 cooperates with the pressing mechanism 70 to position the rotor in the desired direction and raise or lower the rotor within the magnetization box 50 to the desired position.

[0050] The lifting mechanism 60 includes a fixed frame 61, a drive cylinder 62, a lifting plate 63, and a receiving tube structure 64. The fixed frame 61 is fixed to the machine platform 11 and includes a fixed plate 611 and a plurality of fixing posts 612 vertically mounted on the fixed plate 611. The top ends of the fixing posts 612 are fixed to the bottom surface of the tabletop of the machine platform 11, thereby fixing the fixed plate 611 fixedly and parallel to the bottom of the tabletop. The drive cylinder 62 is fixedly mounted on the fixed plate 611. The cylinder body of the drive cylinder 62 extends upward through the tabletop of the machine platform 11. The piston rod of the drive cylinder 62 extends downward through the fixed plate 611 and connects to the lifting plate 63, driving the lifting plate 63 up and down. The drive cylinder 62 is preferably a pneumatic cylinder.

[0051] The receiving tube structure 64 includes a shaft tube 641 and a positioning holding structure 642 formed at the top end of the shaft tube 641. The shaft tube 641 is fixed on the lifting plate 63 and passes through the fixed plate 611 upward. The positioning holding structure 642 includes a slide 6421 and a positioning sensor for sensing the position of the slide. The slide 6421 is axially and elastically installed on the inner wall surface of the shaft tube 641. When the rotor is inserted into the top end of the shaft tube 641, the end of the rotor presses the slide 6421 downward. When the positioning groove on the rotor is aligned with the slide 6421, the slide 6421 will move upward and bounce into the positioning groove of the rotor. The positioning sensor is installed on the shaft tube 641 to monitor the position of the slide 6421 and correspondingly send a sensing signal indicating that it is in position.

[0052] When the lifting mechanism 60 receives the rotor, the driving cylinder 62 drives the lifting plate 63 to rise, thereby driving the shaft cylinder 641 to rise. The shaft cylinder 641 rises and passes through the through hole 211 of the turntable 21 and the bearing hole 2211 of the tray 221 to receive the rotor. The end face of the rotor is pressed against the top face of the shaft cylinder 641. At the same time, the end of the rotor is inserted into the shaft cylinder 641, and the end of the rotor will press the slide bar 6421 downward, that is, the slide bar 6421 is elastically compressed.

[0053] The pressing mechanism 70 includes a lifting assembly 71, a driving mechanism 72 and a crimping cylinder 73. The lifting assembly 71 includes a guide plate 711, a sliding plate 712 and a sliding drive 713. The guide plate 711 is installed on the frame 12. The sliding plate 712 is installed on the guide plate 711 so as to be liftable. The sliding drive 713 is used to drive the sliding plate 712 to slide. The sliding drive 713 can adopt a motor screw to drive the sliding plate 712 to move up and down. The driving mechanism 72 includes a driving motor 721 and a transmission belt 722. The driving motor 721 is fixedly installed on the sliding plate 712. The output shaft of the driving motor 721 is connected to the crimping cylinder 73 through the transmission belt 722, thereby driving the crimping cylinder 73 to rotate.

[0054] After the rotor is mounted on the lifting mechanism 60, the sliding drive member 713 of the pressing mechanism 70 drives the sliding plate 712 downward, causing the crimping cylinder 73 to press against the top of the rotor. The motor 721 is then driven to rotate the crimping cylinder 73, which in turn drives the rotor. When the rotor's engaging groove is aligned with the slide bar 6421, the slide bar 6421 falls into the rotor's engaging groove, achieving precise positioning of the rotor's orientation. At this point, the rotor is still at the reference height of the tray 221. The push member 222 then pushes the tray 221 away, causing the tray 221 to disengage from the rotor at the notch 2212, and the tray 221 is no longer supporting the rotor. The rotor is now completely supported on the lifting mechanism 60.

[0055] The sliding drive member 713 of the pressing mechanism 70 drives the sliding plate 712 downward, driving the rotor to move downward into the magnetizing box 50. The driving cylinder 62 of the lifting mechanism 60 provides a supporting force to maintain balance. The downward stroke of the pressing mechanism 70 is calculated based on the height of the rotor measured by the height measuring unit 44, thereby ensuring the precise height position within the magnetizing box 50. In this way, by ensuring the orientation and height of the rotor within the magnetizing box 50, precise magnetization of the rotor is achieved.

[0056] After magnetization, the lifting mechanism 60 and the pressing mechanism 70 rise, lifting the rotor to the position of the tray 221. The pusher 222 pushes the tray 221 to slide until the bearing hole 2211 is aligned with the through-hole 211, ready to receive the rotor. Then, the shaft cylinder 641 of the lifting mechanism 60 descends, and the crimping cylinder 73 of the pressing mechanism 70 rises, separating from the rotor. The rotor can then be rotated on the turntable to the surface magnetic detection station.

[0057] See also Figure 16-17The rotor magnetizing device includes a surface magnetic detection station structure corresponding to the surface magnetic detection station. The surface magnetic detection station structure includes a support assembly 91 and a surface magnetic detection assembly 92 installed on one side of the support assembly 91. The support assembly 91 includes a receiving seat and an upper stop seat. The receiving seat can adopt the material receiving mechanism 30. The upper stop seat includes a guide seat 911 and a lifting platform 912 installed on the guide seat 911 and can be raised and lowered and slid. The receiving seat and the lifting platform 912 cooperate to clamp the rotor and lift it to a preset position, and the rotor can rotate under the action of the receiving seat. The surface magnetic detection assembly 92 can be lifted and lowered on one side of the support assembly 91 to detect the magnetic steel and magnetic steel saturation of the rotor. During the surface magnetic detection, the rotor rotates and the surface magnetic detection assembly moves up and down to achieve full detection of the rotor surface. The specific structure will not be elaborated in detail in the specific implementation of the present invention.

[0058] The rotor magnetization device also includes a demagnetization mechanism 80, which is used to demagnetize the end of the rotor. The demagnetization mechanism 80 is installed in the integrated loading and unloading station. The demagnetization mechanism 80 includes a demagnetization cover 81 and a demagnetization detection member 82. The demagnetization cover 81 is installed on the lifting slide 422. The lifting and lowering of the lifting slide 422 drives the demagnetization cover 81 to move along the axial direction of the rotor to achieve demagnetization of the rotor end. The demagnetization cover 81 has a demagnetization channel 811 for inserting into the rotor end to demagnetize the rotor end. The demagnetization cover is installed on the lifting slide 422. In this embodiment, the lifting slide 422 has a horizontal section, and the demagnetization cover is installed on the horizontal section. The horizontal section has a through hole correspondingly formed thereon and connected to the demagnetization channel 811. When demagnetizing the rotor end, the lifting slide 422 drives the demagnetization cover to be inserted into the end of the rotor to demagnetize the rotor end.

[0059] During demagnetization, the rotor is located at the loading and unloading integrated station, and the direction-finding unit 45 is activated to detect the circumferential orientation of the rotor to determine whether the circumferential surface of the rotor is accurately at the desired demagnetization angle. If it is not accurately at the desired demagnetization angle, the rotor driving mechanism 49 is activated to drive the rotor to rotate and adjust the circumferential orientation of the rotor. The required lowering stroke of the demagnetization cover 81 is calculated based on the height of the rotor detected by the height-measuring unit 44. The demagnetization cover 81 is lowered and placed on the top end of the rotor to demagnetize the top end of the rotor. After demagnetization is completed, the demagnetization cover 81 is closed.

[0060] The demagnetization detection part 82 is used to detect the demagnetization amount of the rotor end. If the rotor end meets the demagnetization requirements, it is qualified. Otherwise, the demagnetization is unqualified. The demagnetization detection part 82 is installed on the transverse plate 432 and has a detection rod. The detection rod is arranged horizontally, and the detection head of the detection rod faces the circumference of the rotor to detect the magnetic amount of the circumference of the rotor end. During detection, the demagnetization detection part 82 moves horizontally to the detection distance corresponding to the rotor surface through the transverse plate 432 to accurately detect the demagnetization effect of the rotor end. The demagnetization detection part 82 detects the demagnetization amount of the rotor end. If the rotor end meets the demagnetization requirements, it is qualified. Otherwise, the demagnetization cover 81 needs to be demagnetized again until it is qualified.

[0061] The magnetizing method of the rotor magnetizing device provided by the present invention has the following specific process:

[0062] A. The turntable rotates to the loading and unloading station, where the rotor is loaded. The receiving mechanism 30 receives the rotor and places it on the tray structure 22. Specifically, the receiving cylinder 32 of the receiving mechanism 30 rises to receive the rotor, then descends, and the tray 221 supports the rotor. The detection mechanism 40 detects the height of the rotor.

[0063] B. The turntable 21 rotates, moving the rotor into the magnetization station. The lifting mechanism 60 lifts the rotor and positions it to determine its orientation. Based on the rotor height detected by the height measurement unit 44, the required descending stroke of the pressing mechanism 70 is calculated. The pressing mechanism 70 lowers the rotor to the corresponding height within the magnetization box 50 in coordination with the lifting mechanism 60. After magnetization, the lifting mechanism 60 and the pressing mechanism 70 ascend, lifting and lowering the rotor to the position of the tray 221. The rotor is then placed on the tray 221, and the lifting mechanism 60 and the pressing mechanism 70 separate from the rotor.

[0064] C. The turntable 21 rotates to send the rotor to the surface magnetic detection station for surface magnetic detection of the rotor;

[0065] D. The turntable 21 rotates to send the rotor to the loading and unloading integrated station. The receiving mechanism 30 rises and receives the rotor to a preset height. The direction finding unit 45 is activated to detect the circumferential direction of the rotor. The receiving barrel 32 of the receiving mechanism 30 rotates to drive the rotor to rotate, ensuring that the rotor is oriented accurately. The demagnetization cover 81 is activated and lowered to fit over the top of the rotor to demagnetize the top of the rotor. After demagnetization is completed, the demagnetization cover 81 rises and moves out of the top of the rotor to remove the rotor.

[0066] The rotor magnetizing device provided by the present invention detects the height of the rotor at the loading and unloading integrated station, and then the magnetizing station performs a corresponding displacement according to the detected height to enter the magnetizing box. The lifting mechanism and the pressing mechanism cooperate to ensure the orientation and height of the rotor, so that the rotor magnetization position is accurate. Similarly, the height of the rotor during demagnetization is also ensured. In addition, a direction finding unit is provided at the loading and unloading integrated station to detect the accurate orientation of the circumferential surface of the rotor end during demagnetization, thereby ensuring the accurate demagnetization position of the rotor. In addition, the rotor magnetizing device of the present invention integrates the functions of the loading station, the demagnetization station, and the unloading station into one station, thereby greatly simplifying the structure of the device.

[0067] The above-described embodiments merely illustrate the implementation methods of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A rotor magnetizing device, comprising a base (10) and a turntable structure (20), wherein the base (10) comprises a machine platform (11) and a frame (12) mounted on the machine platform (11), and the turntable structure (20) is mounted on the machine platform (11) and comprises a turntable (21) and a tray structure (22) arranged on the turntable (21), wherein a plurality of processing stations are arranged around the turntable (20) on the machine platform (11), and the rotor on the turntable (21) is driven to enter each processing station in sequence by the rotation of the turntable (21), characterized in that: The processing stations include loading and unloading stations, magnetization stations and surface magnetic detection stations; The loading and unloading integrated station is provided with a receiving mechanism (30) and a detection mechanism (40). The receiving mechanism (30) is used to receive the rotor and transfer it to the tray structure (22). The detection mechanism (40) includes a height measuring unit (44) and a direction measuring unit (45). The height measuring unit (44) is used to detect the height of the rotor after loading, and the direction measuring unit (45) is used to detect the circumferential direction of the rotor. The loading and unloading integrated station is further provided with a demagnetization mechanism (80), which includes a demagnetization cover (81) for demagnetizing the end of the magnetized rotor. The magnetizing station is provided with a magnetizing box (50) and a rotor positioning mechanism, wherein the rotor positioning mechanism comprises a lifting mechanism (60) and a pressing mechanism (70), wherein the lifting mechanism (60) is mounted on the machine platform (11) and is used to lift the rotor and position the rotor at a corresponding angle, and the pressing mechanism (70) is mounted on the frame (12) and is used to drive the rotor to rotate and press the rotor downward, and the lifting mechanism (60) cooperates with the pressing mechanism (70) to position the rotor in a desired direction and lift the rotor to a desired position in the magnetizing box (50); the magnetizing box (50) magnetizes the rotor and performs magnetic flux detection after magnetization; The surface magnetic detection station is provided with a support component (91) and a surface magnetic detection component (92), which support both ends of the rotor and lift them to a preset position. The surface magnetic detection component (92) can be lifted and lowered on one side of the support component (91) to perform surface magnetic detection on the rotor.

2. The rotor magnetizing device according to claim 1, characterized in that: The top surface of the turntable (21) is provided with perforations (211) corresponding to the number of processing stations along a circular line, and the tray structure (22) is arranged corresponding to the perforations (211). The tray structure (22) includes a tray (221) and a pushing member (222) for pushing the tray (221) to slide. The tray (221) is slidably arranged on the top surface of the turntable (21), a bearing hole (2211) is formed in the center of the tray (221), and a notch (2212) is formed on the outer periphery of the tray (221) and is connected to the bearing hole (2211).

3. The rotor magnetizing device according to claim 2, characterized in that: The material receiving mechanism (30) comprises a material receiving barrel (32), a lifting drive member (33) and a rotor driving mechanism (34). The material receiving barrel (32) is mounted on the machine platform (11) in a liftable manner and is driven to move up and down by the lifting drive member (33). The material receiving barrel (32) rises and passes through the through hole (211) of the turntable (21) and the bearing hole (2211) of the tray (221) to receive the rotor. The rotor driving mechanism (34) is used to drive the rotor to rotate.

4. The rotor magnetizing device according to claim 1, characterized in that: The detection mechanism (40) includes a lifting guide seat (42) and a transverse guide seat (43), the lifting guide seat (42) includes a lifting slide plate (422) installed on the frame (12) in a lifting and sliding manner, the transverse guide seat (43) includes a transverse plate (432) installed on the lifting slide plate (422) in a transverse manner, the height measuring unit (44) and the direction measuring unit (45) are both installed on the transverse plate (432), the sensing head of the height measuring unit (44) is vertically downward, and the sensing head of the direction measuring unit (45) is facing horizontally.

5. The rotor magnetizing device according to claim 4, characterized in that: The demagnetization mechanism (80) includes a demagnetization cover (81) and a demagnetization detection member (82). The demagnetization cover (81) is mounted on a lifting slide (422). The lifting and lowering of the lifting slide (422) drives the demagnetization cover (81) to move up and down. The demagnetization detection member (82) is mounted on a transverse plate (432) and has a detection rod, which is arranged horizontally.

6. The rotor magnetizing device according to claim 5, characterized in that: The demagnetization cover (81) is provided with a demagnetization channel (811) for demagnetizing the rotor end after being inserted therein. The lifting slide (422) has a horizontal section, and the demagnetization cover (81) is mounted on the horizontal section. The horizontal section is correspondingly provided with through holes correspondingly connected to the demagnetization channel (811).

7. The rotor magnetizing device according to claim 1, characterized in that: The lifting mechanism (60) includes a fixed frame (61), a driving cylinder (62), a lifting plate (63) and a receiving tube structure (64). The fixed frame (61) is fixedly connected to the machine platform (11). The fixed frame (61) includes a fixed plate (611) and a plurality of fixed columns (612) erected on the fixed plate (611). The top ends of the fixed columns (612) are fixedly connected to the bottom surface of the table panel of the machine platform (11). The driving cylinder (62) is fixedly erected on the fixed plate (611). The piston rod of the driving cylinder (62) extends downward through the fixed plate (611) and is connected to the lifting plate (63). The receiving tube structure (64) includes a shaft tube (641). The shaft tube (641) is fixed on the lifting plate (63) and passes through the fixed plate (611) upward.

8. The rotor magnetizing device according to claim 7, characterized in that: The receiving tube structure (64) includes a positioning holding structure (642) formed on the top end of the shaft tube (641), and the positioning holding structure (642) includes a slide bar (6421) and a positioning sensor for sensing the position of the slide bar. The slide bar (6421) is axially and elastically mounted on the inner wall surface of the shaft tube.

9. The rotor magnetizing device according to claim 1, characterized in that: The pressing mechanism (70) includes a lifting assembly (71), a driving mechanism (72) and a crimping cylinder (73). The lifting assembly (71) includes a sliding plate (712) which is installed on the frame (12) in a lifting manner. The crimping cylinder (73) is rotatably installed on the sliding plate (712). The driving mechanism (72) includes a driving motor (721) and a transmission belt (722). The driving motor (721) is fixedly installed on the sliding plate (712). The output shaft of the driving motor (721) is connected to the crimping cylinder (73) through the transmission belt (722).

10. A magnetizing method for a rotor magnetizing device according to any one of claims 1 to 9, characterized in that: The specific process is as follows: A. The turntable moves to the loading and unloading integrated station, the rotor is loaded, the receiving mechanism (30) receives the rotor and places it on the tray structure (22); the detection mechanism (40) detects the height of the rotor; B. The turntable rotates to the magnetization station, the lifting mechanism (60) lifts the rotor and positions the rotor to determine its orientation, and the required descending stroke of the pressing mechanism (70) is calculated based on the height of the rotor detected by the height measuring unit (44), and the pressing mechanism (70) presses the rotor down to the corresponding height in the magnetization box (50); after magnetization, the lifting mechanism (60) and the pressing mechanism (70) rise, and lift the rotor to the position of the tray structure (22), and the rotor is placed on the tray structure (22), and the lifting mechanism (60) and the pressing mechanism (70) are separated from the rotor; C. The turntable (21) moves to the surface magnetic detection station to perform surface magnetic detection on the rotor; D. The turntable (21) moves to the loading and unloading integrated station, the receiving mechanism (30) rises and receives the rotor to a preset height, the direction finding unit (45) starts, detects the circumferential direction of the rotor, and ensures that the rotor is oriented accurately; the demagnetization mechanism (80) is started, the demagnetization cover (81) descends and is placed on the top end of the rotor to demagnetize the top end of the rotor. After the demagnetization is completed, the demagnetization cover (81) rises and moves out of the top end of the rotor to remove the rotor.

Images