Magnetizing apparatus and magnetizing method

Abstract

The application discloses a magnetizing equipment and a magnetizing method, which are used for magnetizing a plurality of permanent magnets of an assembled permanent magnet disc, and the magnetizing equipment comprises a magnetizing mechanism, a mounting rack, a rotating mechanism, a translating mechanism and a control mechanism, the mounting rack is arranged on one side of the magnetizing mechanism, the rotating mechanism and the translating mechanism are arranged on the mounting rack, the control mechanism is electrically connected to the magnetizing mechanism, the rotating mechanism and the translating mechanism, the control mechanism outputs a control instruction, the translating mechanism drives the rotating mechanism to move to a magnetizing position according to the control instruction, the rotating mechanism drives the permanent magnet disc to rotate to a preset position according to the control instruction, and the magnetizing mechanism magnetizes the permanent magnet according to the control instruction, so that the problem that the permanent magnet assembly is always carried out in a strong magnetic field under the process method of the prior magnetizing, the transportation, storage and assembly are inconvenient, and the permanent magnet is difficult to be reused is solved.

Description

Technical Field

[0001] This invention relates to a permanent magnet magnetizing device and method for a permanent magnet eddy current coupling, and particularly to a permanent magnet magnetizing device and method for permanent magnets after they are assembled onto a permanent magnet disk. Background Technology

[0002] Permanent magnet eddy current couplings are a new type of coupling that connects a prime mover to a working machine through permanent magnets, providing contactless and flexible transmission. Instead of direct mechanical connection, permanent magnet couplings utilize the magnetic field lines generated by the conductor disc cutting through the permanent magnet disc, thus inducing eddy currents on the conductor disc and forming a reciprocating magnetic field. This reciprocating magnetic field interacts with the original magnetic field generated by the permanent magnet, producing torque and axial force. Permanent magnet eddy current couplings not only achieve soft starting but also offer numerous advantages such as vibration isolation, protection against impact loads, low installation error, and simple maintenance. Speed ​​regulation can be achieved by adjusting the air gap between the permanent magnet disc and the conductor disc.

[0003] Existing permanent magnet eddy current couplings typically employ a pre-magnetization and then assembly process for the permanent magnets. The purchased permanent magnets are already magnetized. During assembly, due to the strong magnetic field of the permanent magnets, they easily attract to iron parts or each other during handling and assembly. Specialized tooling is required for easier assembly. To prevent the backing plate from pulling the permanent magnets out during assembly, adhesive is applied between the permanent magnets and the plate to bond them. After curing, the backing plate is then installed onto the plate using specialized tooling. This existing magnetization method is not only time-consuming and labor-intensive, but also involves assembly within a strong magnetic field. Even with specialized tooling, the permanent magnets are prone to attracting to iron parts or each other, causing assembly difficulties. Furthermore, the strong magnetism of the plate makes disassembly and assembly of the permanent magnets difficult, hindering maintenance, replacement, and reuse.

[0004] Therefore, there is an urgent need to develop a magnetization device and magnetization method that overcomes the above-mentioned defects. Summary of the Invention

[0005] To address the above problems, the present invention provides a magnetizing device for magnetizing multiple permanent magnets in an assembled permanent magnet disk. The magnetizing device includes:

[0006] A magnetization mechanism magnetizes the permanent magnet according to control commands;

[0007] A mounting bracket is disposed on one side of the magnetization mechanism;

[0008] A rotating mechanism is mounted on the mounting frame. The rotating mechanism is used to load the assembled permanent magnet disk and drives the permanent magnet disk to rotate according to control commands.

[0009] A translation mechanism is mounted on the mounting frame and connected to the rotation mechanism. The translation mechanism drives the rotation mechanism to move horizontally on the mounting frame according to a control command.

[0010] A control mechanism is mounted on the mounting frame and electrically connected to the magnetization mechanism, the rotation mechanism, and the translation mechanism; the control mechanism outputs the control commands.

[0011] Specifically, after the translation mechanism moves the rotation mechanism to the magnetization position according to the control command, and the rotation mechanism drives the permanent magnet disk to rotate to the preset position according to the control command, the magnetization mechanism magnetizes the permanent magnet according to the control command.

[0012] The aforementioned magnetization device, wherein the rotating mechanism comprises:

[0013] A motor mounting bracket is mounted on the mounting bracket and connected to the translation mechanism;

[0014] An electric motor is mounted on the motor mounting bracket and electrically connected to the control mechanism;

[0015] A mounting plate is installed on the motor. The mounting plate is used to support the permanent magnet disk. The motor drives the mounting plate to rotate the permanent magnet disk. The translation mechanism drives the motor to move horizontally through the motor mounting frame.

[0016] The aforementioned magnetization device, wherein the mounting bracket includes:

[0017] The main body, on which the translation mechanism is mounted;

[0018] Multiple parallel slide rails are mounted on the main body, and the motor mounting bracket is mounted on the slide rails. The translation mechanism drives the motor mounting bracket to move horizontally on the slide rails.

[0019] The aforementioned magnetization device, wherein the translation mechanism comprises:

[0020] A cylinder mounting bracket is installed on the main body;

[0021] A push cylinder is mounted on the cylinder mounting base. The piston rod of the push cylinder is connected to the motor mounting bracket. The push cylinder drives the motor mounting bracket to move horizontally on the slide rail according to the control command.

[0022] The aforementioned magnetization device, wherein the control mechanism includes:

[0023] The control panel receives operation commands from the user.

[0024] The PLC control module is electrically connected to the control panel, the magnetizing mechanism, the motor, and the pushing cylinder, and outputs the control commands according to the operation commands.

[0025] The aforementioned magnetization device, wherein the control mechanism further includes:

[0026] An optical positioner is mounted on the magnetization mechanism and electrically connected to the PLC control module and the motor. When the optical positioner detects that the indexing positioning hole of the permanent magnet disk has rotated to the preset position, it outputs a motor stop command to the PLC control module and the motor. The motor stops rotating according to the motor stop command, and the PLC control module outputs a magnetization control command to the magnetization mechanism according to the motor stop command.

[0027] In the aforementioned magnetization equipment, the control panel is equipped with a cylinder reset button, a cylinder advance button, and a start magnetization button. The operator outputs a reset command to the PLC control module via the cylinder reset button, and the PLC control module outputs a reset control command to the push cylinder, which drives the motor to move along the slide rail to the loading / unloading position. The operator outputs an advance command to the PLC control module via the cylinder advance button, and the PLC control module outputs an advance control command to the push cylinder, which drives the motor to move along the slide rail to the magnetization detection position. The operator outputs a magnetization command to the PLC control module via the start magnetization button, and the PLC control module outputs a rotation control command to the motor, which drives the indexing and positioning hole of the permanent magnet disk to rotate to the preset position.

[0028] In the aforementioned magnetization device, the permanent magnet disk is provided with multiple permanent magnets arranged at circumferential intervals, and the indexing positioning hole is provided between two adjacent permanent magnets. The magnetization mechanism includes a magnetization head and a detection head. The magnetization head is used to magnetize the unmagnetized permanent magnets, and the detection head detects the magnetized permanent magnets. If the detection fails, an alarm is triggered through the control panel. The control panel is also provided with a stop magnetization button. After the alarm is triggered, the operator outputs a stop magnetization operation command to the PLC control module through the stop magnetization button. The PLC control module outputs a stop magnetization control command to the magnetization mechanism, and the magnetization mechanism stops working according to the stop magnetization control command.

[0029] The present invention also provides a magnetization method, wherein a plurality of permanent magnets in an assembled permanent magnet disk are magnetized, the magnetization method comprising:

[0030] Reset procedure: Control the translation mechanism to drive the rotation mechanism to move to the loading and unloading station according to the control command output by the control mechanism;

[0031] Installation steps: Install the assembled permanent magnet disk onto the rotating mechanism and move it;

[0032] Start-up steps: According to the control commands output by the control mechanism, control the translation mechanism to drive the rotation mechanism to move to the magnetization detection station;

[0033] Magnetization step: When the rotating mechanism is controlled to rotate to a preset position according to the control command output by the control mechanism, the magnetization mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism.

[0034] The magnetization method described above, wherein the magnetization step further includes:

[0035] When the indexing and positioning hole of the permanent magnet disk is rotated to the preset position by the optical positioner, the magnetization mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism; and while magnetizing the unmagnetized permanent magnet, the magnetized permanent magnet is detected. If the detection fails, an alarm is triggered by the control mechanism.

[0036] The advantages of this invention over existing technologies are as follows:

[0037] This invention provides a magnetizing device and method for magnetizing permanent magnets after assembly, solving the problems of inconvenient transportation, storage, and assembly, and difficulty in reusing permanent magnets, which are inherent in pre-magnetizing processes where permanent magnet assembly is always carried out within a strong magnetic field. The magnetizing device employs an automatic indexing mechanism driven by a stepper motor, in conjunction with an optical positioning device, enabling precise automatic indexing. Following a program set by a PLC, it sequentially magnetizes all permanent magnets while simultaneously detecting the magnetic field strength. Furthermore, to form closed magnetic lines of force on the coupling permanent magnet disk, adjacent permanent magnets must have opposite magnetic poles. Therefore, the magnetizing machine is designed with two magnetizing heads with opposite magnetic poles and corresponding detection heads, which can be adjusted to match the position of the permanent magnet disk. For ease of loading and unloading the permanent magnet disk, a pushing cylinder is installed on the permanent magnet mounting frame, enabling switching between the magnetizing / detection station and the loading / unloading station.

[0038] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the magnetization device of the present invention;

[0041] Figure 2 for Figure 1 Top view;

[0042] Figure 3 This is a schematic diagram of the loading and unloading stations;

[0043] Figure 4 This is a schematic diagram of the magnetization testing station;

[0044] Figure 5 This is a schematic diagram illustrating the principle of the magnetic head charging.

[0045] Figure 6 This is a flowchart of the magnetization method of the present invention.

[0046] The attached figures are labeled as follows:

[0047] MM, magnetization mechanism;

[0048] 13. Detection head;

[0049] 14. Filling head;

[0050] R, mounting bracket;

[0051] 8. Ontology;

[0052] 5. Sliding track;

[0053] RM, rotary mechanism;

[0054] 2. Electric motor;

[0055] 3. Motor mounting bracket;

[0056] 15. Installation disk;

[0057] TM, translation mechanism;

[0058] 6. Push cylinder;

[0059] 7. Cylinder mounting bracket;

[0060] CM, control mechanism;

[0061] 4. PLC control module;

[0062] 9. Control Panel;

[0063] 11. Optical locator;

[0064] 1. Permanent magnet disk;

[0065] 10. Indexing and positioning holes;

[0066] 16. Permanent magnet. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0068] The illustrative embodiments and descriptions of the present invention are used to explain the invention, but are not intended to limit the invention. Furthermore, elements / components using the same or similar reference numerals in the drawings and embodiments are used to represent the same or similar parts.

[0069] The terms "first," "second," "S1," "S2," etc., used in this document do not specifically refer to any order or sequence, nor are they intended to limit the invention; they are merely used to distinguish elements or operations described using the same technical terms.

[0070] The directional terms used in this article, such as up, down, left, right, front, or back, are for reference only when referring to the accompanying drawings. Therefore, the use of directional terms is for illustrative purposes and not to limit this work.

[0071] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0072] The term "and / or" as used herein includes any or all of the things mentioned.

[0073] The term "multiple" in this article includes "two" and "more than two"; the term "multiple groups" in this article includes "two groups" and "more than two groups".

[0074] Certain terms used to describe this application will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the application.

[0075] Please see Figures 1-2 , Figure 1 This is a schematic diagram of the magnetization device of the present invention; Figure 2 for Figure 1 A top view. (e.g.) Figures 1-2 As shown, a magnetizing device of the present invention is used to magnetize a plurality of permanent magnets 16 of an assembled permanent magnet disk 1. The magnetizing device includes: a magnetizing mechanism MM, a mounting frame R, a rotating mechanism RM, a translating mechanism TM, and a control mechanism CM. The magnetizing mechanism MM magnetizes the permanent magnets 16 according to control commands. The mounting frame R is disposed on one side of the magnetizing mechanism MM. The rotating mechanism RM is mounted on the mounting frame R and is used to load the assembled permanent magnet disk 1. The rotating mechanism RM drives the permanent magnet disk 1 to rotate according to control commands. The translating mechanism TM is mounted on the mounting frame R and connected to the control mechanism CM. The rotating mechanism RM and the translation mechanism TM are driven by the rotating mechanism RM to move horizontally on the mounting frame R according to the control command; the control mechanism CM is mounted on the mounting frame R and electrically connected to the magnetizing mechanism MM, the rotating mechanism RM and the translation mechanism TM, and the control mechanism CM outputs the control command; wherein, after the translation mechanism TM drives the rotating mechanism RM to the magnetizing position according to the control command, when the rotating mechanism RM drives the permanent magnet disk 1 to rotate to the preset position according to the control command, the magnetizing mechanism MM magnetizes the permanent magnet 16 according to the control command.

[0076] In this embodiment, 24 permanent magnets 16 evenly distributed in a circle are installed on the permanent magnet disk 1, and a dividing positioning hole 10 is opened in the middle of every two adjacent permanent magnets 16. The magnetizing mechanism MM magnetizes the permanent magnets 16 sequentially according to the control command. The permanent magnet mounting disk is made of non-magnetic materials such as aluminum alloy, stainless steel, and non-metallic materials. The permanent magnet disk has mounting slots corresponding to the permanent magnets. The permanent magnets are installed in the mounting slots, and the mounting gaps are smoothed with epoxy glue and cured. The permanent magnets 16 are neodymium iron boron rare earth permanent magnet materials. The shape of the permanent magnets 16 is trapezoidal or fan-shaped. The unmagnetized permanent magnets 16 are installed in the corresponding mounting slots in the permanent magnet disk 1. The permanent magnet mounting disk with permanent magnets installed is called the permanent magnet disk. Magnetization is mainly carried out on the permanent magnet disk. To facilitate automated magnetization, the permanent magnet disk is provided with mounting holes for automatic indexing on an indexing mechanism. The permanent magnet disk also has indexing positioning holes located in the middle of the two permanent magnets to ensure precise positioning during magnetization and testing. The permanent magnets within the disk have opposite polarities for adjacent magnets and are magnetized in pairs to ensure the correct magnetic poles of adjacent magnets.

[0077] The rotating mechanism RM includes: a motor mounting bracket 3, a motor 2, and a mounting plate 15. The motor mounting bracket is mounted on the mounting bracket RM and connected to the translation mechanism TM. The motor 2 is mounted on the motor mounting bracket 3 and electrically connected to the control mechanism CM. The mounting plate 15 is mounted on the motor 2 and carries the permanent magnet disk 1. The motor 2 drives the mounting plate 15 to rotate the permanent magnet disk 1. The translation mechanism TM drives the motor 2 to move horizontally via the motor mounting bracket 3. In this embodiment, it is preferred to use the motor 2 as an indexing motor. The permanent magnet disk 1 is mounted on the mounting plate 15 of the indexing motor, which is capable of automatic indexing. The main shaft of the indexing motor 2 drives the permanent magnet disk 1 to perform circumferential indexing. The indexing motor is a stepper motor, which provides automatic indexing function for the permanent magnet disk to be magnetized. The indexing motor is mounted on the motor mounting bracket.

[0078] The mounting bracket R includes a body 8 and multiple parallel slide rails 5. A translation mechanism TM is mounted on the body 8. The multiple parallel slide rails 5 are mounted on the body 8, and the motor mounting bracket 3 is mounted on the slide rails 5. The translation mechanism TM drives the motor mounting bracket 3 to move horizontally on the slide rails 5. In this embodiment, a preferred implementation is that the body 8 has four parallel slide rails 5.

[0079] The translation mechanism TM includes a cylinder mounting base 7 and a pushing cylinder 6. The cylinder mounting base 7 is mounted on the main body 8. The pushing cylinder 6 is mounted on the cylinder mounting base 7. The piston rod of the pushing cylinder 6 is connected to the motor mounting frame 3. The pushing cylinder 6 drives the motor mounting frame 3 to move horizontally on the slide rail 5 according to the control command. The extension and retraction of the piston rod drives the motor mounting frame 3. The motor mounting frame 3 drives the indexing motor and the permanent magnet disk 1 to slide back and forth along the slide rail 5.

[0080] The control mechanism CM includes: a control panel 9, a PLC control module 4, and an optical positioner 11. The control panel 9 receives operation commands output by the operator. The PLC control module 4 is electrically connected to the control panel 9, the magnetizing mechanism MM, the motor 2, and the pushing cylinder 6. The PLC control module 4 outputs control commands according to the operation commands. The optical positioner 11 is mounted on the magnetizing mechanism MM and electrically connected to the PLC control module 4 and the motor 2. When the optical positioner 11 detects that the indexing positioning hole 10 of the permanent magnet disk 1 has rotated to the preset position, it outputs a motor stop command to the PLC control module 4 and the motor 2. The motor 2 stops rotating according to the motor stop command, and the PLC control module 4 outputs a magnetizing control command to the magnetizing mechanism MM according to the motor stop command.

[0081] The optical positioner 11 is installed inside the magnetization mechanism MM, located between the two magnetization heads 14. When the magnetization equipment is in the magnetization detection station, the optical positioner 11 is facing the indexing positioning hole 10 on the side of the two permanent magnets 16 being magnetized near the detection head 13. An optical signal receiving device is installed on the other side of the indexing positioning hole 10 to accurately position the indexing position of the permanent magnet disk 1.

[0082] It should be noted that the preset position is the position of the indexing positioning hole 10 when it is located in the optical positioner 11.

[0083] In this embodiment, the control panel 9 is equipped with a cylinder reset button, a cylinder advance button, and a start magnetization button. The operator outputs a reset command to the PLC control module 4 via the cylinder reset button. The PLC control module 4 then outputs a reset control command to the push cylinder. The push cylinder 6 drives the motor 2 to move along the slide rail to the loading / unloading position. Please refer to... Figure 3 The operator outputs a propulsion command to the PLC control module 4 via the cylinder propulsion button. The PLC control module 4 then outputs a propulsion control command to the push cylinder 6. The push cylinder 6 drives the motor 2 to move along the slide rail 5 to the magnetization detection station. Please refer to... Figure 4 The operator outputs a magnetization operation command to the PLC control module 4 through the start magnetization button. The PLC control module 4 outputs a rotation control command to the motor 2. The motor 2 drives the indexing and positioning hole 10 of the permanent magnet disk 1 to rotate to the preset position.

[0084] The magnetizing mechanism MM includes a magnetizing head 14 and a detection head 13. The magnetizing head 14 is used to magnetize the unmagnetized permanent magnet 16, and the detection head 13 detects the magnetized permanent magnet 16. If the detection fails, an alarm is triggered through the control panel 9. The control panel 9 is also equipped with a stop magnetizing button. After the alarm is triggered, the operator outputs a stop magnetizing operation command to the PLC control module 4 through the stop magnetizing button. The PLC control module 4 outputs a stop magnetizing control command to the magnetizing mechanism MM, and the magnetizing mechanism MM stops working according to the stop magnetizing control command.

[0085] The magnetizing mechanism MM is a high-intensity pulse magnetizer that provides an adjustable magnetizing current to the magnetizing head, integrating magnetization, detection, and demagnetization into one unit. It also provides a visualization interface for the magnetization pulse and magnet performance, and is equipped with a cooling device. The magnetizing head 14 is supplied with a magnetizing pulse current by the magnetizer. The shape of the magnetizing head is consistent with that of the permanent magnet, and they are used in pairs with opposite magnetic poles. The magnetizing heads can be quickly replaced to accommodate different shapes and distributions of permanent magnets. The magnetizing head is machined into a C-shape, with the C-shaped notch used to place the permanent magnet disk to be magnetized. The C-shaped notch is aligned with the permanent magnet disk. The magnet disk has a gap of 0.5 to 3 mm at the top and bottom. This gap is sufficient to meet the magnetization intensity requirements of the permanent magnet and ensures that the permanent magnet disk does not rub against the magnetizing head when it rotates automatically at indexing. A magnetizing coil is wound on the other side of the magnetizing head. After the magnetizing coil is connected to the magnetizing current, a closed magnetic field is generated in the entire magnetizing head, providing a magnetizing magnetic field for the permanent magnet. The detection head 13 is provided with non-destructive testing and graphic display functions by the magnetizer. The detection head has the same shape as the magnetizing head and is also equipped with two detection heads, which can detect the magnetization intensity of two permanent magnets with opposite magnetic poles at the same time.

[0086] It should be noted that the control panel 9 also has a detection data storage device for storing the detection data of each permanent magnet 16.

[0087] The following, combined with Figures 1-4 The working process of the magnetization device of the present invention is described in detail below:

[0088] Before the magnetization process begins, the operator first presses the cylinder reset button on control panel 9, pushing cylinder 6 to reset, which in turn moves motor 2 along sliding track 5 to the loading / unloading position. Figure 3 At this point, the permanent magnet disk 1 is assembled onto the motor 2. The operator presses the push cylinder advance button, the push cylinder 6 starts, and drives the motor 2 along the sliding track 5 to the magnetization detection station. Figure 4 At this time, the permanent magnet disk 1 enters the magnetizing head 14 and the detection head 13.

[0089] Start the magnetization process by pressing the magnetization button. First, start the motor 2 to rotate the permanent magnet disk 1. When the indexing and positioning hole 10 on the permanent magnet disk 1 rotates to the preset position set by the optical positioner 11, the optical positioner 11 issues a command and the motor 2 stops rotating. At this time, the two magnetization heads 14 are facing the two permanent magnets 16, and the magnetization mechanism MM is activated. The two magnetization heads 14 with opposite magnetic poles simultaneously magnetize the two permanent magnets 16. After magnetization is complete, the magnetization mechanism MM stops, and motor 2 starts, rotating the two permanent magnets 16 clockwise until they align with the third indexing positioning hole 10 and the optical positioner 11. Magnetization of the second pair of permanent magnets 16 then begins. Simultaneously, the first pair of magnetized permanent magnets 16 rotates to below the detection head 13, which then starts to inspect the two magnetized permanent magnets 16. If the inspection is successful, the program proceeds normally. If the inspection fails, the alarm on the control panel 9 sounds and displays the inspection data of the failed permanent magnet. The magnetization parameters can be manually adjusted, and magnetization can be repeated until all 24 permanent magnets are magnetized. After magnetization, the push cylinder 6 is reset, driving motor 2 and the permanent magnet disk 1 to the loading / unloading position. The operator then removes the magnetized permanent magnet disk 1.

[0090] It should be noted that during the entire magnetization process, the pushing cylinder 6 can lock the indexing motor 2 in the magnetization detection position and keep it fixed. During magnetization indexing, the program controls the rotation of two permanent magnets to perform one magnetization, ensuring that the magnetic poles of adjacent permanent magnets 16 are opposite. This magnetization equipment can not only automatically magnetize and detect the assembled permanent magnets 16, but also perform demagnetization of permanent magnet disks 1 that need demagnetization after circuit adjustment. The detection head 13 and the magnetization head 14 can be quickly adjusted in position according to different specifications of permanent magnet disks 1, and the magnetization head and detection head can be quickly replaced according to the different shapes of permanent magnets 16. The magnetization equipment of the present invention can not only quickly magnetize permanent magnets, but also demagnetize and replenish magnets, greatly improving the maintainability and reusability of permanent magnets.

[0091] Please refer to Figure 5 , Figure 5 This is a schematic diagram illustrating the principle of the magnetic head. Figure 5 As shown, a magnetizing coil is wound around one side of an iron C-shaped magnetizing head. A pulsed current is applied to the magnetizing coil, generating a magnetic field inside the coil that meets the magnetization requirements. This magnetic field forms closed magnetic lines of force along the iron magnetizing head. The permanent magnet disk to be magnetized is placed within the C-shaped notch of the magnetizing head. ANSYS finite element analysis shows that setting the gap between the magnetizing head 14 and the permanent magnet disk 1 to 0.5–3 mm satisfies the required magnetic field strength after magnetization and also meets the requirement for relative indexing rotation of the permanent magnet disk during automatic magnetization.

[0092] Please refer to Figure 6 , Figure 6 This is a flowchart of the magnetization method of the present invention. Figure 6As shown, a magnetization method of the present invention utilizes the aforementioned magnetization equipment to magnetize multiple permanent magnets in an assembled permanent magnet disk. The magnetization method includes:

[0093] Reset step S1: Control the translation mechanism to drive the rotation mechanism to move to the loading and unloading station according to the control command output by the control mechanism;

[0094] Installation step S2: Install the assembled permanent magnet disk onto the rotating mechanism and move it;

[0095] Start-up step S3: According to the control command output by the control mechanism, control the translation mechanism to drive the rotation mechanism to move to the magnetization detection station;

[0096] Magnetizing step S4: When the rotating mechanism is controlled to rotate to a preset position according to the control command output by the control mechanism, the magnetizing mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism.

[0097] The magnetization step S4 further includes:

[0098] When the indexing and positioning hole of the permanent magnet disk is rotated to the preset position by the optical positioner, the magnetization mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism; and while magnetizing the unmagnetized permanent magnet, the magnetized permanent magnet is detected. If the detection fails, an alarm is triggered by the control mechanism.

[0099] In summary, this invention mainly consists of a magnetization mechanism, a mounting frame, a motor, a pushing cylinder, and a PLC control module. The magnetization mechanism has two magnetization heads with opposite magnetic poles and corresponding detection heads, enabling simultaneous magnetization and detection of two adjacent permanent magnets with opposite magnetic poles. The mounting frame is equipped with an automatic indexing motor, which performs automatic indexing under the control of the PLC control module and an optical positioner. The mounting frame also has a pushing cylinder, which can automatically switch between the magnetization and loading / unloading positions under the control of the PLC control module. This invention not only enables the magnetization and detection of permanent magnets after assembly in couplings, but also allows for the demagnetization and remagnetization of permanent magnet discs, thus solving the problem of remagnetizing demagnetized permanent magnets in existing permanent magnet eddy current couplings, or the problem of demagnetizing and reusing permanent magnets on scrapped couplings.

[0100] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetizing device, characterized in that, The magnetization device is used to magnetize multiple permanent magnets in an assembled permanent magnet disk, and includes: A magnetization mechanism magnetizes the permanent magnet according to control commands; A mounting bracket is disposed on one side of the magnetization mechanism; A rotating mechanism is mounted on the mounting frame. The rotating mechanism is used to load the assembled permanent magnet disk and drives the permanent magnet disk to rotate according to control commands. A translation mechanism is mounted on the mounting frame and connected to the rotation mechanism. The translation mechanism drives the rotation mechanism to move horizontally on the mounting frame according to a control command. A control mechanism is mounted on the mounting frame and electrically connected to the magnetization mechanism, the rotation mechanism, and the translation mechanism; the control mechanism outputs the control commands. Wherein, after the translation mechanism drives the rotation mechanism to move to the magnetization position according to the control command, when the rotation mechanism drives the permanent magnet disk to rotate to the preset position according to the control command, the magnetization mechanism magnetizes the permanent magnet according to the control command; The permanent magnet disk is provided with a plurality of permanent magnets arranged in a circular interval. The magnetization mechanism includes two magnetization heads with opposite magnetic poles and two detection heads. The magnetization heads are used to magnetize the unmagnetized permanent magnets, and the detection heads are used to detect the magnetized permanent magnets. The rotating mechanism includes: A motor mounting bracket is mounted on the mounting bracket and connected to the translation mechanism; An electric motor is mounted on the motor mounting bracket and electrically connected to the control mechanism; A mounting plate is installed on the motor. The mounting plate is used to support the permanent magnet disk. The motor drives the mounting plate to rotate the permanent magnet disk. The translation mechanism drives the motor to move horizontally through the motor mounting frame.

2. The magnetizing device as described in claim 1, characterized in that, The mounting bracket includes: The main body, on which the translation mechanism is mounted; Multiple parallel slide rails are mounted on the main body, and the motor mounting bracket is mounted on the slide rails. The translation mechanism drives the motor mounting bracket to move horizontally on the slide rails.

3. The magnetizing device as described in claim 2, characterized in that, The translation mechanism includes: A cylinder mounting bracket is installed on the main body; A push cylinder is mounted on the cylinder mounting base. The piston rod of the push cylinder is connected to the motor mounting bracket. The push cylinder drives the motor mounting bracket to move horizontally on the slide rail according to the control command.

4. The magnetizing device as described in claim 3, characterized in that, The control mechanism includes: The control panel receives operation commands from the user. The PLC control module is electrically connected to the control panel, the magnetizing mechanism, the motor, and the pushing cylinder, and outputs the control commands according to the operation commands.

5. The magnetizing device as described in claim 4, characterized in that, The control mechanism also includes: An optical positioner is mounted on the magnetization mechanism and electrically connected to the PLC control module and the motor. When the optical positioner detects that the indexing positioning hole of the permanent magnet disk has rotated to the preset position, it outputs a motor stop command to the PLC control module and the motor. The motor stops rotating according to the motor stop command, and the PLC control module outputs a magnetization control command to the magnetization mechanism according to the motor stop command.

6. The magnetizing device as described in claim 5, characterized in that, The control panel is equipped with a cylinder reset button, a cylinder advance button, and a start magnetization button. The operator outputs a reset command to the PLC control module via the cylinder reset button, and the PLC control module outputs a reset control command to the push cylinder, which drives the motor to move along the slide rail to the loading / unloading position. The operator outputs an advance command to the PLC control module via the cylinder advance button, and the PLC control module outputs an advance control command to the push cylinder, which drives the motor to move along the slide rail to the magnetization detection position. The operator outputs a magnetization command to the PLC control module via the start magnetization button, and the PLC control module outputs a rotation control command to the motor, which drives the indexing and positioning hole of the permanent magnet disk to rotate to the preset position.

7. The magnetizing device as described in claim 6, characterized in that, The indexing and positioning holes are provided between two adjacent permanent magnets. If the test fails, an alarm will be triggered through the control panel. The control panel is also equipped with a stop magnetization button. After the alarm is triggered, the operator outputs a stop magnetization operation command to the PLC control module through the stop magnetization button. The PLC control module outputs a stop magnetization control command to the magnetization mechanism, and the magnetization mechanism stops working according to the stop magnetization control command.

8. A magnetization method, characterized in that, The magnetization method involves using the magnetization device according to any one of claims 1-7 to magnetize a plurality of permanent magnets in an assembled permanent magnet disk, the magnetization method comprising: Reset procedure: Control the translation mechanism to drive the rotation mechanism to move to the loading and unloading station according to the control command output by the control mechanism; Installation steps: Install the assembled permanent magnet disk onto the rotating mechanism and move it; Start-up steps: According to the control commands output by the control mechanism, control the translation mechanism to drive the rotation mechanism to move to the magnetization detection station; Magnetization step: When the rotating mechanism is controlled to rotate to a preset position according to the control command output by the control mechanism, the magnetization mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism.

9. The magnetization method as described in claim 8, characterized in that, The magnetization step also includes: When the indexing and positioning hole of the permanent magnet disk is rotated to the preset position by the optical positioner, the magnetization mechanism is controlled to magnetize the permanent magnet according to the control command output by the control mechanism; and while magnetizing the unmagnetized permanent magnet, the magnetized permanent magnet is detected. If the detection fails, an alarm is triggered by the control mechanism.

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