Multi-pole magnetizing device of magnetic ring

Abstract

The invention belongs to the technical field of magnetizing equipment, and particularly relates to a multi-pole magnetizing device of a magnetic ring, which comprises a base and a PLC (Programmable Logic Controller) fixed on the base, and further comprises a magnetizing assembly, a positioning and transferring assembly and an air cooling assembly, the magnetizing assembly, the positioning and transferring assembly and the air cooling assembly are all fixed on the base, and the air cooling assembly is positioned under the magnetizing assembly and is used for rapidly cooling the magnetizing assembly and the magnetized magnetic ring. Rapid clamping and high-precision coaxial positioning of the magnetic ring can be realized, magnetization power can be adaptively adjusted based on the size of the magnetic ring so as to ensure complete directional arrangement of internal and external magnetic domains, meanwhile, the temperature rise of the magnetizing coil can be controlled within 40 DEG C so as to ensure stability of magnetic field parameters and prolong the service life of the assembly, and air cooling strength can be adaptively adjusted according to the size of the magnetic ring so as to improve the reliability of the assembly. And through the functions of magnetic performance detection after magnetization and continuous disqualification early warning, the consistency of the magnetization quality and the magnetic performance of the magnetic ring is ensured.

Description

Technical Field

[0001] This invention belongs to the field of magnetization equipment technology, and in particular relates to a multi-pole magnetization device for a magnetic ring. Background Technology

[0002] With the rapid development of industries such as new energy vehicles, industrial servo systems, and high-precision sensors, the market demand for multi-pole magnetic rings is increasing, placing stringent requirements on indicators such as magnetic pole uniformity, magnetic performance consistency, and production efficiency. Currently, existing multi-pole magnetization devices for magnetic rings typically consist of a power supply system, a magnetizing coil, a standard fixture, a simple cooling module, and a basic testing unit. Their working principle involves releasing a pulse current through an energy storage capacitor to generate a strong magnetic field in the magnetizing coil, which then magnetizes the magnetic ring placed in the fixture. After completion, the ring is simply cooled and sampled for testing before being taken off the production line.

[0003] However, existing multi-pole magnetization devices for magnetic rings still have many technical shortcomings in practical applications, making it difficult to meet the production requirements of high-precision magnetic rings:

[0004] 1. Existing magnetic ring clamping methods mostly rely on manual or simple mechanical structures, making it difficult to accurately install the magnetic ring in the center of the clamp. This results in a large deviation in the coaxiality between the magnetic ring and the magnetization component, causing the magnetic field path to shift and directly affecting the magnetization effect. At the same time, the working power of the magnetization component is a fixed value and cannot be adjusted according to the size of the magnetic ring confirmed during the clamping process. For large-sized magnetic rings, insufficient power leads to insufficient magnetic field penetration, and the magnetic domains inside and outside the magnetic ring cannot be completely oriented, resulting in a significant decrease in magnetic performance.

[0005] 2. After prolonged operation, the temperature rise of the magnetizing coil is likely to exceed 40°C, which not only leads to the attenuation of the magnetic field strength and affects the stability of the magnetizing parameters, but also shortens the service life of the magnetization components. Furthermore, due to the large heat capacity of large-size magnetic rings, it is difficult to reduce the temperature to the safe threshold in a short time, which can easily cause failure problems such as thermal demagnetization and cracking, thereby destroying the stability of the magnetic domain arrangement and reducing the consistency of magnetic properties.

[0006] 3. Currently, the testing of magnetized magnetic rings is mostly done by sampling, and the testing dimensions are limited. It is difficult to fully cover key indicators such as magnetic flux density, polarity distribution and uniformity on the surface of the magnetic ring. This can easily lead to defective products entering the market. At the same time, when multiple magnetic rings fail to meet the magnetization requirements in a row, there is no timely feedback signal to remind staff to check the performance of the magnetization components. This can easily cause a large number of defective products to accumulate, which seriously affects production quality and efficiency. Summary of the Invention

[0007] The purpose of this invention is to address the above-mentioned problems by providing a multi-pole magnetization device for a magnetic ring.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a multi-pole magnetization device for a magnetic ring, comprising a base and a PLC controller fixed on the base, and further comprising a magnetization component, a positioning and conveying component and an air-cooling component, wherein the magnetization component, the positioning and conveying component and the air-cooling component are all fixed on the base, and the air-cooling component is located directly below the magnetization component to rapidly cool the magnetization component and the magnetized magnetic ring;

[0009] A magnetization intensity detection component is also fixed on one side of the bottom of the magnetization component. The magnetization intensity detection component is located on one side of the bottom of the air-cooled cooling component and is used to detect the magnetic field intensity of the magnetized magnetic ring.

[0010] The PLC controller makes the size of the magnetic ring fed back by the positioning and conveying component positively correlated with the operating power of the magnetization component and the air-cooling component;

[0011] The upper end of the base is also fixed with a positioning post, which is coaxially arranged with the magnetization component and the air-cooling component.

[0012] In the aforementioned multi-pole magnetization device for a magnetic ring, the magnetization assembly includes a fixed ring. Multiple support plates are uniformly fixedly connected to the outer wall of the fixed ring, and the support plates are fixed to a base. Multiple pairs of magnetizing poles are uniformly arranged on the inner wall of the fixed ring. A pair of magnetizing poles refers to two magnetizing poles symmetrically arranged along a diameter of the fixed ring. A magnetizing coil is wound around the magnetizing pole. Insulating resin is filled between two adjacent magnetizing poles. A separation partition is also embedded between the side walls of two adjacent magnetizing poles away from the fixed ring.

[0013] In the aforementioned multi-pole magnetization device for a magnetic ring, the positioning and transfer assembly includes an electric lifting rod fixed to the upper end of a base. A mounting plate is fixedly connected to the top moving end of the electric lifting rod. A support tube is rotatably sleeved on one end surface of the mounting plate. A motor rotation assembly for driving the support tube to rotate is fixed to the upper end of the mounting plate. Multiple electric push rods are uniformly fixedly connected to the lower outer wall of the support tube. A U-shaped inner support plate is fixedly connected to the moving end of the electric push rod away from the support tube. A miniature laser rangefinder is also fixedly connected to the wall of the support tube, which is opposite to one of the U-shaped inner support plates.

[0014] In the aforementioned multi-pole magnetization device for a magnetic ring, the air-cooled cooling component includes a hollow ring. The lower end of the hollow ring is fixed to a base by multiple support columns. Multiple air-cooling cylinders are uniformly fixedly connected to the top of the hollow ring. The multiple air-cooling cylinders are located directly below the multiple magnetization pole heads. Multiple air-cooling cylinders are uniformly fixedly connected to the inner side of the hollow ring. Both the air-cooling cylinders are equipped with electrically controlled valves. A cold air duct is also fixedly connected to the side wall of the hollow ring. A cold air fan is connected to the end of the cold air duct away from the hollow ring. The cold air fan is fixed to the base.

[0015] In the above-mentioned multi-pole magnetization device for a magnetic ring, the top of the positioning post is designed with a rounded head structure, the inner diameter of the support tube matches the outer diameter of the positioning post, the inner side of the lower end of the support tube is designed with a tapered flared structure, and the outer side of the positioning post and the inner side of the support tube are both coated with a layer of polytetrafluoroethylene coating.

[0016] In the aforementioned multi-pole magnetization device for a magnetic ring, the magnetization intensity detection component includes an electrically operated telescopic rod that is fixedly inserted into the side wall of the support plate. A fluxmeter is fixedly connected to the moving end of the electrically operated telescopic rod, and the fluxmeter is located on one side of the bottom of the hollow ring.

[0017] In the aforementioned multi-pole magnetization device for a magnetic ring, the height of the support column is greater than the height of the magnetic ring to be tested, allowing the cooled magnetic ring to be further moved to one side of the magnetization intensity detection component.

[0018] In the aforementioned multi-pole magnetization device for a magnetic ring, the vertical sidewall of the U-shaped inner support plate is designed with an arc surface structure, and multiple anti-slip textures are provided at the corresponding arc surface.

[0019] Compared with existing technologies, the advantages of this invention are as follows:

[0020] 1. Through the set magnetization component, positioning and transfer component, and positioning post, the magnetic ring can be quickly clamped and positioned, accurately installed in the center of the fixture, and the coaxiality of the magnetic ring and the magnetization component is ensured to avoid the magnetic field path from deviating, thus ensuring the magnetization effect. Based on the magnetic ring size confirmed during the clamping process, the working power of the magnetization component is self-adjusted. The larger the magnetic ring size, the greater the magnetization power, ensuring that the magnetic domains inside and outside the magnetic ring are completely oriented.

[0021] 2. By using the air-cooling cooling components, the temperature rise of the magnetizing coil can be controlled within 40℃, effectively avoiding the problem of magnetic field strength attenuation caused by coil overheating, extending the service life of the magnetizing components, ensuring the stability of magnetic field parameters during magnetization, and reducing the temperature of the magnetic ring to a safe threshold in a short time after magnetization, avoiding failure problems such as thermal demagnetization and cracking of the magnetic ring, ensuring the stability of the magnetic domain arrangement and the consistency of magnetic properties of the magnetic ring, and the air-cooling intensity can be adaptively adjusted based on the size of the magnetic ring to ensure cooling efficiency.

[0022] 3. The magnetization intensity detection component can measure the magnetic flux density, polarity distribution and uniformity of the magnetized magnetic ring surface, ensuring that the magnetized magnetic ring meets the technical requirements. When the magnetization degree of three magnetic rings fails to meet the requirements in a continuous test, a timely feedback signal is given to remind the staff to confirm the magnetization performance of the magnetization component to ensure the magnetization quality. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural schematic diagram of the magnetization component of the present invention;

[0025] Figure 3 This is a three-dimensional structural schematic diagram of the positioning and transfer component of the present invention;

[0026] Figure 4 yes Figure 3 A three-dimensional sectional view of the central support tube;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of the air-cooled cooling component of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the magnetization intensity detection component of the present invention.

[0029] In the diagram: 1. Base, 2. PLC controller, 3. Magnetizing assembly, 31. Fixing ring, 32. Support plate, 33. Magnetizing pole head, 34. Magnetizing coil, 35. Insulating resin, 36. Separating partition, 4. Positioning and transfer assembly, 41. Electric lifting rod, 42. Mounting plate, 43. Support tube, 44. Motor rotation assembly, 45. Electric push rod, 46. U-shaped inner support plate, 47. Miniature laser rangefinder, 5. Air-cooled cooling assembly, 51. Hollow ring, 52. Support column, 53. Air-cooled cylinder one, 54. Air-cooled cylinder two, 55. Electric control valve, 56. Cold air duct, 57. Air cooler, 6. Magnetization intensity detection assembly, 61. Electric telescopic rod, 62. Magnetometer, 7. Positioning column. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] like Figures 1-6 As shown, a multi-pole magnetization device for a magnetic ring includes a base 1 and a PLC controller 2 fixed on the base 1. It also includes a magnetization component 3, a positioning and conveying component 4, and an air-cooling component 5. The magnetization component 3, the positioning and conveying component 4, and the air-cooling component 5 are all fixed on the base 1. The air-cooling component 5 is located directly below the magnetization component 3 and rapidly cools the magnetization component 3 and the magnetized magnetic ring. The PLC controller 2 makes the magnetic ring size fed back by the positioning and conveying component 4 positively correlated with the working power of the magnetization component 3 and the air-cooling component 5. A positioning post 7 is also fixed at the upper end of the base 1. The positioning post 7 is coaxially arranged with the magnetization component 3 and the air-cooling component 5.

[0032] The magnetization assembly 3 includes a fixing ring 31. Multiple support plates 32 are uniformly fixed to the outer wall of the fixing ring 31. The support plates 32 are fixed to the base 1. Multiple pairs of magnetizing pole heads 33 are uniformly arranged on the inner wall of the fixing ring 31. A pair of magnetizing pole heads 33 refers to two magnetizing pole heads 33 that are symmetrical along a diameter of the fixing ring 31. A magnetizing coil 34 is wound around the magnetizing pole head 33. An insulating resin 35 is filled between two adjacent magnetizing pole heads 33. A separation partition 36 is also embedded between the side walls of two adjacent magnetizing pole heads 33 that are away from the fixing ring 31.

[0033] The positioning and transfer assembly 4 includes an electric lifting rod 41 fixed to the upper end of the base 1. A mounting plate 42 is fixedly connected to the top movable end of the electric lifting rod 41. A support tube 43 is rotatably sleeved on one end surface of the mounting plate 42. A motor rotation assembly 44 for driving the support tube 43 to rotate is fixed to the upper end of the mounting plate 42. Multiple electric push rods 45 are evenly fixedly connected to the lower outer wall of the support tube 43. A U-shaped inner support plate 46 is fixedly connected to the movable end of the electric push rod 45 away from the support tube 43. The vertical sidewall of the U-shaped inner support plate 46 is designed with an arc surface structure, and multiple anti-slip textures are provided at the corresponding arc surface. The wall of the support tube 43 is also fixedly connected to a miniature laser rangefinder 47 that is positioned opposite to one of the U-shaped inner support plates 46. The top of the positioning post 7 is designed with a round head structure. The inner diameter of the support tube 43 matches the outer diameter of the positioning post 7. The inner side of the lower end of the support tube 43 is designed with a tapered flared structure. The outer side of the positioning post 7 and the inner side of the support tube 43 are both coated with a layer of polytetrafluoroethylene coating.

[0034] A magnetization intensity detection component 6 is also fixed on one side of the bottom of the magnetization component 3. The magnetization intensity detection component 6 is located on one side of the bottom of the air-cooled cooling component 5 and is used to detect the magnetic field intensity of the magnetized magnetic ring.

[0035] The magnetization intensity detection component 6 includes an electric telescopic rod 61 that is fixedly inserted into the side wall of the support plate 32. The moving end of the electric telescopic rod 61 is fixedly connected to a fluxmeter 62, which is located on one side of the bottom of the hollow ring 51.

[0036] The air-cooled cooling component 5 includes a hollow ring 51. The lower end of the hollow ring 51 is fixed to the base 1 by multiple support columns 52. Multiple air-cooling cylinders 53 are uniformly fixed and connected to the top of the hollow ring 51. The multiple air-cooling cylinders 53 are located directly below multiple magnetizing pole heads 33. Multiple air-cooling cylinders 54 are uniformly fixed and connected to the inner side of the hollow ring 51. Both the air-cooling cylinders 53 and 54 are equipped with electrically controlled valves 55. A cold air duct 56 is also fixedly connected to the side wall of the hollow ring 51. A cold air fan 57 is connected to the end of the cold air duct 56 away from the hollow ring 51. The cold air fan 57 is fixed to the base 1. The height of the support columns 52 is greater than the height of the magnetic ring to be tested, so that the cooled magnetic ring can be further moved to one side of the magnetization intensity detection component 6.

[0037] The operating principle of the present invention is described as follows: The magnetic ring to be magnetized is first placed in the outer area of ​​multiple U-shaped inner support plates 46. The PLC controller 2 controls multiple electric push rods 45 to start. The electric push rods 45 push the U-shaped inner support plates 46 to move outward and then abut against the inner side of the magnetic ring. A torque sensor is installed at the motor output end of the electric push rods 45. When the torque sensor feedback torque reaches a preset threshold, the PLC controller 2 controls the electric push rods 45 to stop moving, confirming that the U-shaped inner support plates 46 provide stable inner support and fixation for the magnetic ring. The synchronous movement of multiple electric push rods 45 can ensure that the center of the magnetic ring is coaxially set with the support tube 43.

[0038] The PLC controller 2 then controls the electric lifting rod 41 to drive the mounting plate 42 to move the magnetic ring downwards, so that the magnetic ring moves to the inside of the magnetization component 3. During this movement, the support tube 43 is inserted and connected to the positioning post 7. The lower inner side of the support tube 43 is set with a tapered flared structure, and the top of the positioning post 7 is set with a round head structure, which can make the two fit together more smoothly. This further accurately positions the magnetic ring in the magnetization component 3, ensuring that the magnetic ring and the magnetization component 3 are set coaxially, thereby avoiding the magnetic field path from shifting and ensuring the magnetization effect.

[0039] The PLC controller 2 controls the energy storage capacitor to discharge and inject a strong pulse current into the magnetizing coil 34. The magnetizing coil 34 generates a strong magnetic field, which is guided by the magnetizing pole head 33 to form a uniform multi-pole magnetic field distribution inside the magnetic ring, so that the magnetic domains inside the magnetic ring are oriented and arranged to complete the magnetization of the magnetic ring.

[0040] During the magnetization process, the PLC controller 2 synchronously controls the start of the air-cooled cooling component 5 and opens the electronically controlled valve 55 located on the air-cooled cylinder 53. The air cooler 57 introduces cold air into the hollow ring 51 through the cold air pipe 56, and then sprays it onto the magnetizing coil 34 through multiple air-cooled cylinders 53. This effectively avoids the problem of magnetic field strength attenuation caused by overheating of the magnetizing coil 34, extends the service life of the magnetization component 3, and ensures the stability of magnetic field parameters during the magnetization process.

[0041] After the magnetization is completed, PLC controller 2 continues to control electric lifting rod 41 to drive the magnetic ring to move down into the air-cooled cooling component 5. At this time, PLC controller 2 controls the electric control valve 55 on the first air-cooled cylinder 53 to close and opens the electric control valve 55 on the second air-cooled cylinder 54, so that cold air acts on the magnetic ring to assist the magnetic ring in rapid cooling. During the cooling process, PLC controller 2 synchronously controls the motor rotation component 44 to move. The motor rotation component 44 drives the support tube 43 to drive the magnetic ring to rotate, so as to achieve comprehensive and uniform heat dissipation of the magnetic ring and reduce the temperature of the magnetic ring to a safe threshold in a short time. This avoids failure problems such as thermal demagnetization and cracking of the magnetic ring and ensures the stability of the magnetic domain arrangement and the consistency of magnetic properties of the magnetic ring.

[0042] After the cooling of the magnetic ring is completed, the PLC controller 2 continues to control the electric lifting rod 41 to push the magnetic ring down to one side of the magnetization intensity detection component 6, and drives the motor rotation component 44 to continue to drive the magnetic ring to rotate. The electric telescopic rod 61 pushes the fluxmeter 62 to one side of the magnetic ring. The fluxmeter 62 measures the magnetic flux density, polarity distribution and uniformity of the surface of the magnetized magnetic ring to ensure that the magnetized magnetic ring meets the technical requirements. When the magnetization degree of three magnetic rings fails to meet the requirements in a continuous test, the PLC controller 2 transmits a wireless signal to the receiving terminal of the staff to promptly remind the staff to check whether there is a problem with the magnetization performance of the magnetization component 3, so as to ensure the magnetization quality.

[0043] Additionally, after the magnetic ring is clamped by the positioning and transfer component 4, the final moving distance of the U-shaped inner support plate 46 is detected by the micro laser rangefinder 47. The greater the moving distance of the U-shaped inner support plate 46, the larger the size of the magnetic ring to be tested. The PLC controller 2 adjusts the strong pulse current injected into the magnetizing coil 34 to be greater, because the magnetic circuit of the large-diameter magnetic ring is longer and the magnetic resistance is greater, requiring a higher magnetic field strength to penetrate into the interior, ensuring that the inner and outer magnetic domains are completely oriented. At the same time, the working power of the air cooler 57 is increased when using the air-cooled cooling component 5, because the greater the injected strong pulse current, the more Joule heat is generated flowing through the magnetizing coil 34. Moreover, the magnetizing coil 34 has more turns, higher resistance, and more serious energy loss, so more heat will be converted. Simultaneously improving the cooling efficiency can more effectively control the coil temperature within 40℃, better ensuring the service life of the magnetization component 3.

[0044] Increasing the cooling power of the magnetic ring can also quickly reduce the temperature of the magnetic ring. This is because the "hysteresis loss" generated during the flipping of magnetic domains inside the magnetic ring is converted into heat. The larger the size of the magnetic ring, the more heat is converted, resulting in a higher temperature of the magnetic ring. Therefore, a larger cooling power is needed to match the cooling quality and efficiency.

[0045] When the magnetized magnetic ring is tested using the magnetization intensity detection component 6, the rotation speed of the magnetic ring is adjusted based on the size of the magnetic ring confirmed by the positioning and transfer component 4. The larger the size of the magnetic ring, the slower the rotation speed of the magnetic ring driven by the motor rotation component 44. This is because the larger the size of the magnetic ring, the faster the linear velocity of its outer edge will be at the same angular velocity. In order to maintain the stability of the linear velocity, it is necessary to reduce the angular velocity of the magnetic ring's rotation to ensure the full detection work of the fluxmeter 62.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-pole magnetization device for a magnetic ring, comprising a base (1) and a PLC controller (2) fixed on the base (1), characterized in that, It also includes a magnetization component (3), a positioning and transfer component (4), and an air-cooling component (5). The magnetization component (3), the positioning and transfer component (4), and the air-cooling component (5) are all fixed on the base (1). The air-cooling component (5) is located directly below the magnetization component (3) to quickly cool down the magnetization component (3) and the magnetized magnetic ring. A magnetization intensity detection component (6) is also fixed on one side of the bottom of the magnetization component (3). The magnetization intensity detection component (6) is located on one side of the bottom of the air-cooled cooling component (5) and is used to detect the magnetic field intensity of the magnetized magnetic ring. The PLC controller (2) makes the size of the magnetic ring fed back by the positioning and conveying component (4) positively correlated with the working power of the magnetization component (3) and the air-cooled cooling component (5); The upper end of the base (1) is also fixed with a positioning post (7), which is coaxially arranged with the magnetization component (3) and the air-cooled cooling component (5).

2. The multi-pole magnetization device for a magnetic ring according to claim 1, characterized in that, The magnetization assembly (3) includes a fixing ring (31), and a plurality of support plates (32) are uniformly fixedly connected to the outer wall of the fixing ring (31). The support plates (32) are fixed on the base (1). A plurality of pairs of magnetizing pole heads (33) are uniformly arranged on the inner wall of the fixing ring (31). A pair of magnetizing pole heads (33) refers to two magnetizing pole heads (33) that are symmetrical on one diameter of the fixing ring (31). A magnetizing coil (34) is wound around the magnetizing pole head (33). An insulating resin (35) is filled between two adjacent magnetizing pole heads (33). A separation partition (36) is also embedded between the side walls of the two adjacent magnetizing pole heads (33) away from the fixing ring (31).

3. The multi-pole magnetization device for a magnetic ring according to claim 1, characterized in that, The positioning and transfer assembly (4) includes an electric lifting rod (41) fixed to the upper end of the base (1). The top moving end of the electric lifting rod (41) is fixedly connected to an installation plate (42). A support tube (43) is rotatably sleeved on one end surface of the installation plate (42). A motor rotation assembly (44) for driving the support tube (43) to rotate is fixed to the upper end of the installation plate (42). Multiple electric push rods (45) are evenly fixedly connected to the lower outer wall of the support tube (43). A U-shaped inner support plate (46) is fixedly connected to the moving end of the electric push rod (45) away from the support tube (43). A miniature laser rangefinder (47) is also fixedly connected to the tube wall of the support tube (43) and is arranged opposite to one of the U-shaped inner support plates (46).

4. The multi-pole magnetization device for a magnetic ring according to claim 2, characterized in that, The air-cooled cooling component (5) includes a hollow ring (51). The lower end of the hollow ring (51) is fixed to the base (1) by multiple support columns (52). Multiple air-cooled cylinders (53) are uniformly fixed to the top of the hollow ring (51). The multiple air-cooled cylinders (53) are located directly below the multiple magnetized pole heads (33). Multiple air-cooled cylinders (54) are uniformly fixed to the inner side of the hollow ring (51). Both the air-cooled cylinders (53) and the air-cooled cylinders (54) are equipped with electrically controlled valves (55). The side wall of the hollow ring (51) is also fixedly connected to a cold air pipe (56). The end of the cold air pipe (56) away from the hollow ring (51) is connected to a cold air fan (57). The cold air fan (57) is fixed to the base (1).

5. A multi-pole magnetization device for a magnetic ring according to claim 3, characterized in that, The top of the positioning post (7) is set as a round head structure, the inner diameter of the support tube (43) matches the outer diameter of the positioning post (7), the inner side of the lower end of the support tube (43) is set as a tapered flared structure, and the outer side of the positioning post (7) and the inner side of the support tube (43) are both coated with a layer of polytetrafluoroethylene coating.

6. The multi-pole magnetization device for a magnetic ring according to claim 4, characterized in that, The magnetization intensity detection component (6) includes an electric telescopic rod (61) fixedly inserted into the side wall of the support plate (32). The moving end of the electric telescopic rod (61) is fixedly connected to a fluxmeter (62), which is located on one side of the bottom of the hollow ring (51).

7. A multi-pole magnetization device for a magnetic ring according to claim 4, characterized in that, The height of the support column (52) is greater than the height of the magnetic ring to be tested, so that the cooled magnetic ring can be moved further to one side of the magnetization intensity detection component (6).

8. A multi-pole magnetization device for a magnetic ring according to claim 3, characterized in that, The vertical sidewall of the U-shaped inner support plate (46) is designed with an arc surface structure, and multiple anti-slip textures are provided at the corresponding arc surface.

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