Magnetic rotor magnetizing apparatus

Abstract

The utility model discloses a kind of magnetically rotated equipment of magnetizing, comprising: magnetizing cylinder, the top of magnetizing cylinder is open, its inner wall is fixedly connected with the cooling cylinder of hollow structure, the inner wall of cooling cylinder is equidistantly fixedly connected with several magnetizing coils, and magnetizing rotor is provided in the space formed by several magnetizing coils surrounding;Shielding component, shielding component includes the magnetic shield plate of being fixedly connected in the inner wall of cooling cylinder and being located at the both sides of several magnetizing coils, the end of each magnetic shield plate away from cooling cylinder is equipped with arc adaptation part, and the radian of arc adaptation part is matched with the outer peripheral radian of magnetizing rotor.The utility model is matched with circulation component for magnetizing coil high-efficiency heat dissipation by hollow cooling cylinder, guarantees magnetizing magnetic field stability and prolongs equipment life, and it can block magnetic field leakage, realize permanent magnet shielding type magnetization to avoid mischarging, improve magnetizing quality by collocating magnetic shield plate and arc adaptation part.

Description

Technical Field

[0001] This utility model relates to the field of magnetic rotor magnetization technology, and in particular to a magnetic rotor magnetization device. Background Technology

[0002] In the manufacturing process of magnetic rotors, magnetization is a key step to ensure that they have the predetermined magnetic properties. The corresponding magnetization equipment must meet the core requirements of magnetic field concentration, operational stability and heat dissipation reliability.

[0003] In existing magnetic rotor magnetization equipment, the magnetization coils easily generate a lot of heat when working. If the heat dissipation is not timely, the coil temperature will rise, affecting the stability of the magnetization magnetic field and the service life of the equipment. At the same time, traditional equipment lacks a precise magnetic isolation structure, and the magnetic field is prone to leakage to non-target areas during the magnetization process, causing the permanent magnet to be mis-magnetized and reducing the magnetization quality. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic rotor magnetization device to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A magnetic rotor magnetization device, comprising: A magnetizing cylinder has an open top and a hollow cooling cylinder fixedly connected to its inner wall. Several magnetizing coils are fixedly connected at equal intervals to the inner wall of the cooling cylinder, and a magnetizing rotor is provided in the space formed by the several magnetizing coils. The shielding assembly includes a magnetic shielding plate fixedly connected to the inner wall of the cooling cylinder and located on both sides of a plurality of magnetizing coils. Each magnetic shielding plate has an arc-shaped adapter at the end away from the cooling cylinder. The arc of the arc-shaped adapter matches the outer circumferential arc of the magnetizing rotor. The shielding assembly is used to shield the permanent magnets on the magnetizing rotor in a corresponding area for magnetization. A circulation component, which is connected to the cooling cylinder, is used for the circulation of cooling water within the cooling cylinder.

[0006] Furthermore, the circulation assembly includes a water inlet pipe fixedly connected to one side of the bottom of the cooling cylinder, and the water inlet pipe passes through the bottom of the magnetizing cylinder and is connected to a circulation pump. The suction end of the circulation pump is connected to a suction pipe, and the top of the cooling cylinder away from the water inlet pipe is connected to a water outlet pipe.

[0007] Furthermore, a spiral blade is fixedly connected to the inner wall of the cooling cylinder, and the spiral blade extends spirally upward along the axial direction of the cooling cylinder.

[0008] Furthermore, a protective pad is fixedly connected to the surface of each of the aforementioned arc-shaped adapter portions, and the protective pad is elastic.

[0009] Furthermore, a cylinder is installed at the bottom center of the magnetizing cylinder. The telescopic end of the cylinder slides through the bottom of the magnetizing cylinder and extends into the inner cavity of the magnetizing cylinder. A push plate is fixedly connected to the telescopic end of the cylinder, and an insertion hole is opened at the center of the surface of the push plate.

[0010] Furthermore, a limiting ring is fixedly connected to the inner wall of the insertion hole, and the limiting ring is elastic.

[0011] Furthermore, the central axis of the push plate, the central axis of the magnetizing cylinder, the central axis of the insertion hole, and the central axis of the magnetizing rotor are coaxially arranged.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This application utilizes the combination of a hollow cooling cylinder and a circulation component to efficiently dissipate heat from the magnetizing coil, ensuring a stable magnetizing magnetic field and extending the equipment's lifespan. The addition of a magnetic shielding plate and an arc-shaped adapter can prevent magnetic field leakage, achieve permanent magnet shielding magnetization to avoid mismagnetization, and improve magnetization quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a magnetic rotor magnetization device proposed in this utility model; Figure 2 This is a top view of the overall magnetic rotor magnetization device proposed in this utility model; Figure 3 This is a schematic diagram of the overall internal structure of a magnetic rotor magnetization device proposed in this utility model; Figure 4 This is a schematic diagram of the spatial connection structure formed by the push plate and the magnetizing coil of a magnetic rotor magnetizing device proposed in this utility model.

[0014] In the diagram: 1. Magnetizing cylinder; 2. Limiting ring; 3. Cooling cylinder; 4. Magnetizing coil; 5. Magnetic shielding plate; 6. Arc-shaped adapter; 7. Magnetizing rotor; 8. Water outlet pipe; 9. Circulating pump; 10. Water inlet pipe; 11. Water suction pipe; 12. Controller; 13. Temperature sensor; 14. Spiral blade; 15. Push plate; 16. Protective pad; 17. Socket; 18. Cylinder. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 A magnetic rotor magnetization device, comprising: The magnetizing cylinder 1 has an open top and a hollow cooling cylinder 3 is fixedly connected to its inner wall. The cooling cylinder 3 is made of copper. Several magnetizing coils 4 are fixedly connected at equal intervals to the inner wall of the cooling cylinder 3. A magnetizing rotor 7 is provided in the space formed by the several magnetizing coils 4. A controller 12 is installed on the outer wall of the cooling cylinder 3. The controller 12 is electrically connected to the several magnetizing coils 4 through wires and an external power source. The shielding assembly includes magnetic shielding plates 5 fixedly connected to the inner wall of the cooling cylinder 3 and located on both sides of several magnetizing coils 4. Each magnetic shielding plate 5 has an arc-shaped adapter 6 at the end away from the cooling cylinder 3. The arc of the arc-shaped adapter 6 matches the outer circumferential arc of the magnetizing rotor 7. The shielding assembly is used to shield the permanent magnets on the magnetizing rotor 7 in a corresponding area for magnetization. The magnetic shielding plates 5 are made of silicon steel sheets.

[0017] The circulation component is connected to the cooling cylinder 3 and is used for the circulation of cooling water inside the cooling cylinder 3.

[0018] This application utilizes a hollow cooling cylinder 3 in conjunction with a circulation assembly to provide a continuous and effective heat dissipation channel for the magnetizing coil 4. This ensures that the heat generated during the operation of the magnetizing coil 4 is promptly dissipated, preventing the coil temperature from rising due to insufficient heat dissipation. This guarantees the stability of the magnetizing magnetic field and reduces wear and tear on equipment components caused by high temperatures, extending the overall service life of the equipment. Furthermore, the shielding assembly incorporates a magnetic shielding plate 5 made of silicon steel sheets. The excellent magnetic shielding properties of silicon steel sheets effectively prevent the magnetizing magnetic field from diffusing into non-target areas. The arc-shaped fitting part 6 of the magnetic shielding plate 5 matches the outer circumference of the magnetizing rotor 7, allowing for a tight fit to the surface of the magnetizing rotor 7. This achieves precise shielding magnetization of the corresponding area of ​​the permanent magnet, fundamentally preventing the problem of mis-magnetization of the permanent magnet caused by magnetic field leakage and significantly improving magnetization quality. Moreover, the controller 12 enables centralized and unified control of several magnetizing coils 4, ensuring the synchronization and stability of the magnetization process. The overall structural design takes into account heat dissipation, magnetic shielding, and magnetization control, making the equipment more practical and reliable during use.

[0019] In the example of this application, the circulation assembly includes a water inlet pipe 10 fixedly connected to one side of the bottom of the cooling cylinder 3. The water inlet pipe 10 passes through the bottom of the magnetized cylinder 1 and is connected to a circulation pump 9. The suction end of the circulation pump 9 is connected to a suction pipe 11, and the top of the cooling cylinder 3, away from the water inlet pipe 10, is connected to an outlet pipe 8. A temperature sensor 13 is installed on the inner wall of the outlet pipe 8. The temperature sensor 13 is electrically connected to a central processing unit (CPU) of model STM32F103RCT6 via a wire. The CPU is also electrically connected to the circulation pump 9. The CPU acquires the temperature detection signal output by the temperature sensor 13 through its built-in ADC interface, and then outputs a PWM adjustment signal based on the temperature detection signal to dynamically control the operating power of the circulation pump 9.

[0020] As a preferred example of this utility model, the pipeline layout of the circulation component ensures smooth flow of cooling water from bottom to top, forming a complete circulating heat dissipation loop. This continuously delivers cooling water to the cooling cylinder 3 to remove the heat generated by the magnetizing coil 4, effectively solving the problem of untimely heat dissipation in traditional equipment. The temperature sensor 13, in conjunction with the central processing unit, can sense the temperature of the cooling water in the outlet pipe 8 in real time and capture the heat feedback of the magnetizing coil 4. After the central processing unit collects the temperature detection signal through the built-in ADC interface, it uses the PWM adjustment signal to dynamically regulate the operating power of the circulation pump 9, so that the output of the circulation pump 9 is matched with the heat dissipation of the coil. This avoids incomplete heat dissipation caused by insufficient cooling power and also prevents energy waste caused by over-cooling. It keeps the working temperature of the magnetizing coil 4 within a suitable range, further ensuring the stability and consistency of the magnetizing magnetic field. The selection of the central processing unit and the design of the control logic improve the intelligence level of the cooling system, making the heat dissipation process more targeted and reliable, indirectly extending the service life of the magnetizing coil 4 and the overall equipment. At the same time, this structural design eliminates the need for manual intervention in cooling adjustment, reducing operational complexity and improving the ease of use of the equipment.

[0021] In the example of this application, a helical blade 14 is fixedly connected to the inner wall of the cooling cylinder 3, and the helical blade 14 extends spirally upward along the axial direction of the cooling cylinder 3. Preferably, the helical blade 14 is made of stainless steel.

[0022] As a preferred example of this utility model, the spiral blades 14 fixed to the inner wall of the cooling cylinder 3 can change the flow trajectory of the cooling water in the cooling cylinder 3, causing the cooling water to rise slowly along the spiral path. This prolongs the contact time between the cooling water and the inner wall of the cooling cylinder 3 and the area surrounding the magnetizing coil 4, allowing for more thorough and uniform heat exchange between the cooling water and the heat-generating components. This effectively eliminates cooling dead zones, prevents local overheating of the magnetizing coil 4, significantly improves the uniformity of heat dissipation and overall heat dissipation efficiency, and thus more effectively ensures the stability of the magnetizing magnetic field. Furthermore, the spiral blades 14, made of stainless steel, not only possess good structural strength and corrosion resistance, enabling them to adapt to the working environment of long-term scouring and immersion in cooling water, but also prevent deformation and damage, ensuring the long-term stable operation of the cooling system. Moreover, the stainless steel material will not interfere with the magnetic field during the magnetization process, avoiding the influence of the blade material on the magnetization effect. This balances heat dissipation performance, structural durability, and magnetization stability, further optimizing the equipment's performance.

[0023] In the example of this application, a protective pad 16 is fixedly connected to the surface of several arc-shaped adapter parts 6, and the protective pad 16 is elastic.

[0024] As a preferred example of this utility model, the elastic protective pad 16 fixed on the surface of the arc-shaped adapter 6 can play a buffering role when the magnetic shielding plate 5 comes into contact with the magnetizing rotor 7, avoiding rigid collision between the two, effectively protecting the outer peripheral surface of the magnetizing rotor 7 from wear and scratches, and at the same time preventing the arc-shaped adapter 6 of the magnetic shielding plate 5 from damage due to collision, thus ensuring the structural integrity of the magnetizing rotor 7 and the magnetic shielding plate 5.

[0025] In the example of this application, a cylinder 18 is installed at the middle of the bottom end of the magnetizing cylinder 1. The telescopic end of the cylinder 18 slides through the bottom end of the magnetizing cylinder 1 and extends into the inner cavity of the magnetizing cylinder 1. A push plate 15 is fixedly connected to the telescopic end of the cylinder 18. An insertion hole 17 is provided at the center of the surface of the push plate 15.

[0026] As a preferred example of this utility model, the cylinder 18 installed at the bottom center of the magnetizing cylinder 1 cooperates with the push plate 15. The extension and retraction of the cylinder 18 drives the push plate 15 to rise and fall, conveniently transporting the magnetizing rotor 7 to the designated magnetizing space enclosed by the magnetizing coil 4. This ensures that the relative position between the magnetizing rotor 7, the magnetizing coil 4, and the magnetic shielding plate 5 is accurate, providing a basic guarantee for precise magnetization. The push plate 15 can provide stable support for the magnetizing rotor 7, preventing the magnetizing rotor 7 from shifting or shaking due to the magnetic field force during the magnetization process. This ensures that the magnetizing magnetic field can accurately act on the target area of ​​the permanent magnet, reducing uneven magnetization or mismagnetization caused by positional deviation, and improving the magnetization quality. In addition, the insertion hole 17 opened on the surface of the push plate 15 can be adapted to the end structure of the magnetizing rotor 7, further enhancing the positioning stability of the magnetizing rotor 7. At the same time, the cylinder 18-driven method realizes the automated operation of loading and unloading the magnetizing rotor 7, reducing the labor intensity and error of manual operation, improving the efficiency of the magnetization process, making the equipment more suitable for batch magnetization operations, and improving the practicality and production applicability of the equipment.

[0027] In the example of this application, a limiting ring 2 is fixedly connected to the inner wall of the socket 17, and the limiting ring 2 is elastic and made of silicone material.

[0028] As a preferred example of this utility model, the elastic limiting ring 2 fixed to the inner wall of the socket 17 is made of silicone. The silicone material has good elasticity and flexibility, which can tightly wrap the end of the magnetizing rotor 7, further enhancing the fixing effect of the magnetizing rotor 7 in the socket 17. It effectively prevents the magnetizing rotor 7 from slight displacement due to the magnetic field force during the magnetization process, ensuring that the relative position of the magnetizing rotor 7 with the magnetizing coil 4 and the magnetic shielding plate 5 always remains accurate, providing a reliable guarantee for stable and accurate magnetization. At the same time, the silicone material does not affect the distribution of the magnetizing magnetic field and will not interfere with the magnetization effect.

[0029] In the example of this application, the central axis of the push plate 15, the central axis of the magnetizing cylinder 1, the central axis of the socket 17, and the central axis of the magnetizing rotor 7 are coaxially arranged.

[0030] As a preferred example of this utility model, the push plate 15, the magnetizing cylinder 1, the insertion hole 17, and the central axis of the magnetizing rotor 7 are coaxially arranged. This ensures that the magnetizing rotor 7 is precisely positioned at the center of the space enclosed by the magnetizing coil 4, so that the magnetic field generated by the magnetizing coil 4 acts uniformly on the outer target area of ​​the magnetizing rotor 7. This avoids uneven local magnetic field strength caused by rotor eccentricity, effectively improving the uniformity and consistency of magnetization, ensuring the uniformity of magnetic properties in each target area of ​​the permanent magnet. The coaxial design allows the arc-shaped fitting part 6 of the magnetic shielding plate 5 to achieve uniform contact with the outer surface of the magnetizing rotor 7 around the entire circumference, further optimizing the magnetic shielding effect, reducing the risk of magnetic field leakage from local gaps, and structurally eliminating the possibility of mis-magnetizing permanent magnets in non-target areas, significantly improving the magnetization quality.

[0031] Working principle: First, the cylinder 18 drives the push plate 15 to rise, then inserts the end of the magnetizing rotor 7 into the insertion hole 17, aligning the magnetizing position of the magnetizing rotor 7 with the magnetizing coil 4. Then, the cylinder 18 descends to send the magnetizing rotor 7 into the space enclosed by the magnetizing coil 4. The elastic limiting ring 2 in the insertion hole 17 of the push plate 15 achieves stable positioning of the magnetizing rotor 7. The coaxial arrangement of the push plate 15, magnetizing cylinder 1, insertion hole 17 and magnetizing rotor 7 ensures that the rotor is in a precise magnetizing position. Subsequently, the controller 12 connects to the external power supply, synchronously controlling several magnetizing coils 4 to start and generate a magnetizing magnetic field. At the same time, the magnetic shielding plate 5 made of silicon steel sheet in the shielding assembly is tightly attached to the surface of the magnetizing rotor 7 through the arc-shaped adapter 6, blocking the magnetic field from flowing to non-target areas. Domain leakage is eliminated to achieve directional magnetization of the corresponding area of ​​the permanent magnet. During the magnetization process, the circulation pump 9 of the circulation component drives the cooling water through the suction pipe 11 and the inlet pipe 10 into the copper cooling cylinder 3. The spiral blades 14 change the flow trajectory of the cooling water to make it fully contact the cooling cylinder 3 and the magnetization coil 4, and remove the heat generated during operation. The temperature sensor 13 in the outlet pipe 8 provides real-time feedback of the water temperature signal. After receiving the signal, the central processing unit dynamically adjusts the operating power of the circulation pump 9 through the PWM adjustment signal to ensure that the heat dissipation effect is adapted to the heat generation of the coil. The elastic protective pad 16 prevents the magnetic shielding plate 5 from rigidly damaging the magnetization rotor 7 during the magnetization process. Finally, under the synergistic effect of positioning, directional magnetization and intelligent heat dissipation, a stable and efficient magnetization operation of the magnetic rotor is completed.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic rotor magnetization device, characterized in that, include: A magnetizing cylinder (1) has an open top and a hollow cooling cylinder (3) is fixedly connected to its inner wall. Several magnetizing coils (4) are fixedly connected at equal intervals to the inner wall of the cooling cylinder (3). A magnetizing rotor (7) is provided in the space enclosed by several magnetizing coils (4). The shielding assembly includes a magnetic shielding plate (5) fixedly connected to the inner wall of the cooling cylinder (3) and located on both sides of a plurality of magnetizing coils (4). Each magnetic shielding plate (5) has an arc-shaped adapter (6) at one end away from the cooling cylinder (3). The arc of the arc-shaped adapter (6) matches the outer circumferential arc of the magnetizing rotor (7). The shielding assembly is used to shield the permanent magnets on the magnetizing rotor (7) in a corresponding area for magnetization. A circulation component is connected to the cooling cylinder (3) and is used for the circulation of cooling water in the cooling cylinder (3).

2. The magnetic rotor magnetizing device according to claim 1, characterized in that, The circulation assembly includes a water inlet pipe (10) fixedly connected to one side of the bottom of the cooling cylinder (3), and the water inlet pipe (10) passes through the bottom of the magnetizing cylinder (1) and is connected to a circulation pump (9). The suction end of the circulation pump (9) is connected to a suction pipe (11), and the top of the cooling cylinder (3) away from the water inlet pipe (10) is connected to a water outlet pipe (8).

3. The magnetic rotor magnetizing device according to claim 1, characterized in that, The inner wall of the cooling cylinder (3) is fixedly connected with a spiral blade (14), which extends spirally upward along the axial direction of the cooling cylinder (3).

4. The magnetic rotor magnetizing device according to claim 1, characterized in that, Each of the aforementioned arc-shaped adapters (6) has a protective pad (16) fixedly connected to its surface, and the protective pad (16) is elastic.

5. A magnetic rotor magnetizing device according to claim 1, characterized in that, A cylinder (18) is installed at the bottom center of the magnetizing cylinder (1). The telescopic end of the cylinder (18) slides through the bottom of the magnetizing cylinder (1) and extends into the inner cavity of the magnetizing cylinder (1). A push plate (15) is fixedly connected to the telescopic end of the cylinder (18). An insertion hole (17) is provided at the center of the surface of the push plate (15).

6. A magnetic rotor magnetizing device according to claim 5, characterized in that, The inner wall of the insertion hole (17) is fixedly connected to a limiting ring (2), and the limiting ring (2) is elastic.

7. A magnetic rotor magnetizing device according to claim 5, characterized in that, The central axis of the push plate (15), the central axis of the magnetizing cylinder (1), the central axis of the socket (17) and the central axis of the magnetizing rotor (7) are coaxially arranged.

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