A neodymium-iron-boron magnet magnetizing device

Abstract

The utility model discloses a kind of neodymium-iron-boron magnet magnetizing device, including magnetizing fixture, the magnetizing fixture includes inner cylinder, spiral water channel is set on the outside wall of inner cylinder, inner cylinder is fixed on workbench, outer cylinder is sleeved on the outer portion of inner cylinder, water inlet and water outlet are set on the side of outer cylinder, magnetizing head is inserted in the inside of inner cylinder, magnetizing coil is wound on magnetizing head, magnetizing head inner circle inserts the inner protective shell in the form of barrel, inner protective shell bottom end is sealed, left half outer protective shell and right half outer protective shell are sleeved on the overall outer portion of outer cylinder and upper cover plate, and the two outer protective shells are fixed by screw and upper cover plate;The utility model optimizes the structure of cooling water structure and magnetizing fixture, the split type design of inner cylinder and outer cylinder can facilitate operator to open water channel, clean scale inside it;It is also provided with anti-radiation structure on it, effectively shields internal magnetic field generated when magnetizing, reduces magnetic field outward leakage, reduces the influence of radiation to external equipment and operator.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron magnet production technology, specifically to a neodymium iron boron magnet magnetizing device. Background Technology

[0002] In the production and application of NdFeB magnets, the magnetization process is a crucial step, as its effectiveness directly affects the performance and quality of the magnets. Existing magnetization devices generate a large amount of heat in the magnetization coil during the magnetization process. If heat cannot be dissipated effectively in time, the coil temperature will become too high, which will not only reduce magnetization efficiency but may also damage the coil and affect its service life. Therefore, magnetization devices usually embed heat exchange pipes on the surface of the magnetization clamp's outer shell. By circulating cooling water in the pipes, the magnetization clamp's outer shell is cooled, thereby helping to dissipate heat from the coil.

[0003] However, after prolonged use, scale easily accumulates inside the pipes of the magnetizing clamp, and the heat exchange pipes on the outer shell of the existing magnetizing clamp are difficult to clean, affecting the normal use of the heat exchange pipes. At the same time, the existing magnetizing device generates strong electromagnetic radiation during the magnetization process, which may interfere with other electronic devices and precision instruments in the surrounding environment, affecting their normal operation or even causing damage. Moreover, electromagnetic radiation may also pose a potential hazard to the health of operators. The existing magnetizing device lacks effective magnetic protection measures. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a neodymium iron boron magnetization device to solve the problems mentioned in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A neodymium iron boron magnet magnetizing device includes a magnetizing clamp. The magnetizing clamp includes an inner cylinder with a spiral water channel on its outer side wall. A lower cover plate is screwed to the bottom of the inner cylinder and fixed to a workbench. An outer cylinder is fitted around the inner cylinder, with an inlet and an outlet on its side. A magnetizing head is inserted inside the inner cylinder, with a magnetizing coil wound around it. An upper cover plate is screwed to the top of the inner cylinder, with a through hole in the center. A cylindrical inner protective shell is inserted into the inner ring of the magnetizing head, with its bottom sealed. Its top passes through the through hole in the upper cover plate and is connected to a flange, which is fixed to the upper cover plate with screws. A left and right half of the outer protective shell are fitted around the outer cylinder and the upper cover plate, both of which are fixed to the upper cover plate with screws.

[0007] As a preferred embodiment of the neodymium iron boron magnet magnetizing device, a magnetizer body and a circulating water cooler are arranged next to the workbench. The magnetizer body is connected to the magnetizing coil through wires, and the output end and input end of the circulating water cooler are connected to the water inlet and water outlet of the outer cylinder through pipes, respectively.

[0008] As a preferred embodiment of the neodymium iron boron magnet magnetizing device, a cover is installed on the workbench by screws, the magnetizing fixture is located inside the cover, and a circular through hole is opened on the top of the cover corresponding to the inner circle position of the inner protective shell. The radius of the circular through hole is equal to the inner circle radius of the inner protective shell.

[0009] As a preferred embodiment of the neodymium iron boron magnet magnetizing device, both the inner and outer cylinders are made of copper cylinders, with the outer wall of the inner cylinder in close contact with the inner wall of the outer cylinder.

[0010] As a preferred embodiment of the neodymium iron boron magnet magnetization device, the water inlet and water outlet on the outer cylinder are located at both ends of the water passage groove on the inner cylinder.

[0011] As a preferred embodiment of the neodymium iron boron magnet charging device, the inner protective shell is made of silicon steel or permalloy, and the outer wall of the inner protective shell is in close contact with the inner ring of the charging head.

[0012] As a preferred embodiment of the neodymium iron boron magnet magnetization device, both the left and right outer protective shells are made of lead, and the sides of these two outer protective shells are provided with through holes for the connecting pipes of the water inlet and outlet of the outer cylinder to pass through.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The neodymium iron boron magnet magnetizing device of this utility model forms an efficient water cooling heat dissipation system by opening a spiral water channel on the outer wall of the inner cylinder, and setting the water inlet and outlet of the outer cylinder and connecting it to the circulating water cooler. During magnetization, the heat generated by the magnetizing coil can be quickly conducted to the cooling water in the water channel through the inner cylinder, and the circulating water cooler continuously removes the heat, avoiding the coil from reducing magnetization efficiency or being damaged due to excessive temperature, and ensuring that the magnetization process is stable and continuous. Moreover, the split design of the inner cylinder and the outer cylinder makes it convenient for operators to open the water channel and clean the scale inside. At the same time, the inner cylinder and the outer cylinder can also shield electromagnetic radiation, avoiding the influence of radiation on external equipment and operators.

[0015] (2) The neodymium iron boron magnet magnetization device of this utility model adopts a double-layer magnetic protection structure of inner and outer protective shells, which can effectively shield the internal magnetic field generated during magnetization, reduce the leakage of magnetic field to the outside, and reduce the impact on the surrounding environment and operators. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram showing the disassembled structure of the magnetizing clamp described in this utility model.

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the protective shell described in this utility model.

[0019] Figure 3 This is a schematic diagram of the installation position of the magnetizing clamp described in this utility model.

[0020] Figure 4 This is a schematic diagram of the overall structure of the neodymium iron boron magnet magnetization device described in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Inner cylinder; 101. Water channel; 2. Lower cover plate; 3. Outer cylinder; 301. Water inlet; 302. Water outlet; 4. Magnetizing head; 5. Magnetizing coil; 6. Upper cover plate; 7. Inner protective shell; 8. Flange; 9. Left half of outer protective shell; 10. Right half of outer protective shell; 11. Workbench; 12. Magnetizer body; 13. Circulating water cooler; 14. Cover. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1 to 4 As shown, this utility model provides a neodymium iron boron magnet magnetizing device, including a magnetizing clamp. The magnetizing clamp includes an inner cylinder 1. A spiral water channel 101 is provided on the outer side wall of the inner cylinder 1. A lower cover plate 2 is installed at the bottom of the inner cylinder 1 by screws. The lower cover plate 2 is fixed to the workbench 11 by screws. An outer cylinder 3 is sleeved on the outside of the inner cylinder 1. Both the inner cylinder 1 and the outer cylinder 3 are made of copper cylinders. The outer wall of the inner cylinder 1 is in close contact with the inner wall of the outer cylinder 3. A water inlet 301 and a water outlet 302 are provided on the side of the outer cylinder 3. The water inlet 301 and the water outlet 302 are located at both ends of the water channel 101 on the inner cylinder 1, respectively.

[0028] After the inner cylinder 1 and the outer cylinder 3 are combined, the water channel 101, the inlet 301 and the outlet 302 can form a cooling water channel. Cooling water can enter the water channel 101 from the inlet 301 and finally exit the water channel 101 from the outlet 302. During this period, the cooling water can exchange heat with the inner cylinder 1 and take away the heat of the inner cylinder 1, thereby achieving the cooling effect. In addition, the separate design of the inner cylinder 1 and the outer cylinder 3 can facilitate the operator to clean the scale inside the water channel 101.

[0029] A magnetizing head 4 is inserted inside the inner cylinder 1, and a magnetizing coil 5 is wound around the magnetizing head 4. The heat generated by the magnetizing coil 5 when it is working can be transferred to the inner cylinder 1. Then, by continuously cooling the inner cylinder 1, the magnetizing coil 5 is cooled. In addition, the copper inner cylinder 1 also has a good shielding effect on electromagnetic radiation, which can protect the operator when the device is working.

[0030] The top of the inner cylinder 1 is fitted with an upper cover plate 6 by screws. The cooperation between the upper cover plate 6 and the lower cover plate 2 can restrict the axial movement of the outer cylinder 3 and the magnetic head 4 on the inner cylinder 1, thereby fixing the outer cylinder 3 and the magnetic head 4 on the inner cylinder 1.

[0031] Furthermore, a through hole is provided in the center of the upper cover plate 6, and a cylindrical inner protective shell 7 is inserted into the inner ring of the magnetic charging head 4. The inner protective shell 7 is made of silicon steel or permalloy. The outer wall of the inner protective shell 7 is in close contact with the inner ring of the magnetic charging head 4. The bottom end of the inner protective shell 7 is sealed, and its top end passes through the through hole of the upper cover plate 6 and is connected to a flange 8. The flange 8 is fixed to the upper cover plate 6 with screws. The outer cylinder 3 and the upper cover plate 6 are fitted with a left half outer protective shell 9 and a right half outer protective shell 10. Both of these outer protective shells are fixed to the upper cover plate 6 with screws. Both the left half outer protective shell 9 and the right half outer protective shell 10 are made of lead. The sides of these two outer protective shells are provided with through holes for the connecting pipes of the water inlet 301 and the water outlet 302 of the outer cylinder 3 to pass through.

[0032] The inner protective shell 7 made of silicon steel, together with the outer protective shell made of lead, can shield electromagnetic radiation, thereby further reducing the impact of electromagnetic radiation on operators. At the same time, the inner protective shell 7 made of silicon steel also has good magnetic permeability and will not affect the normal magnetization function of this device.

[0033] Preferably, the inner protective shell 7 can also be made of permalloy, which can also shield electromagnetic interference and has good magnetic permeability.

[0034] Next to the workbench 11 are a magnetizer body 12 and a circulating water cooler 13. The magnetizer body 12 is connected to the magnetizing coil 5 through wires to provide a DC high voltage to the magnetizing fixture, so that the magnetizing fixture generates a super strong magnetic field, thereby magnetizing the neodymium iron boron magnet. The output end and input end of the circulating water cooler 13 are connected to the water inlet 301 and water outlet 302 of the outer cylinder 3 through pipes, respectively. Its function is to provide circulating cooling water to the magnetizing fixture, thereby helping to dissipate heat from the magnetizing coil 5 in the magnetizing fixture. A cover 14 is installed on the workbench 11 by screws. The magnetizing fixture is located inside the cover 14, which protects the magnetizing fixture. A circular through hole is opened on the top of the cover 14 corresponding to the inner circle position of the inner protective shell 7. The radius of the circular through hole is equal to the inner circle radius of the inner protective shell 7, so that the operator can put the neodymium iron boron magnet into the magnetizing fixture for magnetization.

[0035] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A magnetizing device for neodymium iron boron magnets, comprising a magnetizing clamp, characterized in that, The magnetizing fixture includes an inner cylinder (1), with a spiral water channel (101) on the outer wall of the inner cylinder (1). A lower cover plate (2) is installed at the bottom of the inner cylinder (1) by screws and is fixed to the workbench (11) by screws. An outer cylinder (3) is fitted around the inner cylinder (1). An inlet (301) and an outlet (302) are provided on the side of the outer cylinder (3). A magnetizing head (4) is inserted inside the inner cylinder (1), and a magnetizing coil (5) is wound around the magnetizing head (4). The top of the inner cylinder (1) is... The top cover plate (6) is installed by screws. The top cover plate (6) has a through hole in the center. The inner ring of the magnetic head (4) is inserted with a cylindrical inner protective shell (7). The bottom end of the inner protective shell (7) is sealed. Its top end passes through the through hole of the top cover plate (6) and is connected to a flange (8). The flange (8) is fixed to the top cover plate (6) by screws. The outer cylinder (3) and the top cover plate (6) are fitted with a left half outer protective shell (9) and a right half outer protective shell (10). Both of these outer protective shells are fixed to the top cover plate (6) by screws.

2. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, A magnetizer body (12) and a circulating water cooler (13) are arranged next to the workbench (11). The magnetizer body (12) is connected to the magnetizing coil (5) through a wire. The output end and input end of the circulating water cooler (13) are connected to the water inlet (301) and water outlet (302) of the outer cylinder (3) through pipes, respectively.

3. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, A cover (14) is installed on the workbench (11) by screws. The magnetizing clamp is located inside the cover (14). A circular through hole is opened on the top of the cover (14) corresponding to the inner circle position of the inner protective shell (7). The radius of the circular through hole is equal to the inner circle radius of the inner protective shell (7).

4. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, Both the inner cylinder (1) and the outer cylinder (3) are made of copper cylinders, and the outer wall of the inner cylinder (1) is in close contact with the inner wall of the outer cylinder (3).

5. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, The water inlet (301) and water outlet (302) on the outer cylinder (3) are located at both ends of the water channel (101) on the inner cylinder (1).

6. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, The inner protective shell (7) is made of silicon steel or permalloy, and the outer wall of the inner protective shell (7) is in close contact with the inner ring of the magnetizing head (4).

7. The neodymium iron boron magnet magnetizing device according to claim 1, characterized in that, The left half of the outer protective shell (9) and the right half of the outer protective shell (10) are both made of lead. The sides of these two outer protective shells are provided with through holes for the connecting pipes of the water inlet (301) and water outlet (302) of the outer cylinder (3) to pass through.

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