Neodymium iron boron automatic continuous magnetizing device

Abstract

The invention relates to the related technical field of neodymium-iron-boron magnet magnetizing, and discloses an automatic continuous neodymium-iron-boron magnetizing device which comprises a magnetizing box, a conveying mechanism is arranged in the magnetizing box in a front-back penetrating mode, a magnetizing cylinder is arranged in the magnetizing box, a magnetizing coil is wound on the outer wall of the magnetizing cylinder, and a cooling assembly is arranged on the periphery of the magnetizing cylinder. A plurality of heat dissipation assemblies are arranged on the cooling assembly; according to the device, the spiral cooling pipe can move back and forth, so that cooling liquid circularly flows in the first annular cylinder, the spiral cooling pipe, the second annular cylinder and the condenser, and a large amount of low-temperature cooling liquid can continuously and efficiently dissipate heat of the magnetizing coil; and then the first cooling fins and the second cooling fins move along the cooling fin moving paths, so that the heat transfer effect on multiple positions of the magnetizing cylinder can be achieved, the situation that the local temperature of the magnetizing cylinder and the magnetizing coil is too high is prevented, and the cooling effect of the cooling assembly on the magnetizing coil is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of neodymium iron boron magnet magnetization, and more specifically, it relates to an automatic continuous magnetization device for neodymium iron boron magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) is a high-performance magnetic material, classified into sintered NdFeB and bonded NdFeB. Sintered NdFeB is manufactured using powder metallurgy, while bonded NdFeB magnets are made by mixing NdFeB magnetic powder and a binder through compression molding or injection molding. Due to the high dimensional accuracy of bonded NdFeB magnets, they can be made into relatively complex magnetic components and feature one-time molding and multi-pole orientation, making them widely used in the computer and electronics industries. Bonded NdFeB magnets require magnetization during manufacturing, making it a necessary step. However, existing NdFeB magnet magnetization techniques have the following drawbacks: In existing technologies, the magnetizing coil is one of the core components of a magnetizing device. It generates a strong magnetic field through current to magnetize the neodymium iron boron permanent magnet material. However, when current passes through the coil, heat is generated due to resistance, causing the coil temperature to rise. If the coil temperature is too high, it will not only affect the magnetizing effect but may also damage the coil itself or even cause a safety accident. Therefore, heat dissipation of the magnetizing coil is crucial to ensuring the normal operation of the magnetizing device.

[0003] In the prior art, the magnetizing coil in the magnetizing device usually needs to be equipped with a cooling component to dissipate the generated heat. These cooling components can be passive, such as heat sinks and cooling fans, or active, such as liquid cooling systems. Through the cooling component, the temperature of the coil can be kept within a safe and ideal range, thereby ensuring the normal operation of the equipment. However, although the current cooling components can play a role in heat dissipation to a certain extent, the heat dissipation effect is still not ideal.

[0004] In the prior art, the cooling requirements of the magnetizing coil in the magnetizing device are not constant. Different amounts of heat will be generated under different magnetizing conditions. For example, more heat may be generated during high-current or high-frequency magnetizing operations. If the cooling components cannot be effectively adjusted according to the actual heat generation, the heat dissipation effect may be affected. If the cooling capacity is too small, it may not be able to dissipate all the heat, causing the equipment to overheat. If the cooling capacity is too large, it may cause the equipment to cool down too quickly, affecting the stability of the equipment.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an automatic continuous magnetization device for neodymium iron boron, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] This invention provides an automatic continuous magnetization device for neodymium iron boron magnets, which overcomes the above-mentioned defects in the prior art.

[0007] The purpose and effectiveness of the new invention's automatic continuous magnetization device for neodymium iron boron are achieved through the following specific technical means: An automatic continuous magnetization device for neodymium iron boron (NdFeB) includes a magnetization box. A transmission mechanism runs through the interior of the magnetization box from front to back. A first annular cylinder and a second annular cylinder are fixedly mounted at both ends of the interior of the magnetization box. A magnetization cylinder is fixedly connected between the first and second annular cylinders. A magnetization coil is wound around the outer wall of the magnetization cylinder. A cooling assembly is provided around the periphery of the magnetization cylinder, and the cooling assembly has several heat dissipation components. The cooling assembly includes a spiral cooling tube, with a first circular tube at one end and a second circular tube at the other end. The heat dissipation component includes two sleeves. A circular rod slides inside one end of each sleeve, and a sliding rod slides inside the other end of each sleeve. A first heat dissipation fin is fixedly mounted at one end of each sliding rod. Several fan blades are arranged circumferentially on the outer wall of the circular rod. Two elastic telescopic rods are symmetrically fixed above and below the spiral cooling tube. Two second heat dissipation fins are fixedly mounted at the extended ends of the two elastic telescopic rods. A connector is provided between each end of the first heat dissipation fin and one end of each of the two second heat dissipation fins.

[0008] In a further technical solution, the spiral cooling pipe is located around the magnetizing coil, the two sleeves are symmetrically fixed on both sides of the spiral cooling pipe, two racks are fixedly provided on the inner side walls of the magnetizing box, a gear is fixedly provided on the outer wall of one end of the round rod, and a slider is fixedly provided on the outer wall of the other end of the round rod. The outer wall of the gear meshes with the upper side of the rack.

[0009] In a further technical solution, the inner wall of the sleeve is provided with a spiral groove that is interconnected at both ends, the slider slides spirally in the spiral groove, and a T-shaped block is fixedly provided at one end of the round rod facing the direction of the slide rod, the T-shaped block being rotatably connected to the slide rod.

[0010] A further technical solution is provided where a first annular plate is slidably disposed inside the first annular cylinder, a second annular plate is slidably disposed inside the second annular cylinder, the first circular tube is fixedly connected to the first annular plate, the second circular tube is fixedly connected to the second annular plate, a first one-way valve is installed inside the first circular tube, and a second one-way valve is installed inside the second circular tube.

[0011] In a further technical solution, an electric telescopic rod is installed inside the second annular cylinder, and the extended end of the electric telescopic rod is fixedly connected to one side of the second annular plate.

[0012] In a further technical solution, a condenser is installed on the lower side of the inside of the magnetizing box. One end of the condenser is connected to the inside of the second annular cylinder via a first connecting pipe, and the other end of the condenser is connected to the inside of the first annular cylinder via a second connecting pipe.

[0013] A further technical solution is provided with a coolant tank and a water pump on the upper side of the inside of the magnetizing box. One end of the water pump is connected to the inside of the coolant tank, and the other end of the water pump is connected to the inside of the first annular cylinder. A third connecting pipe is provided between the inside of the coolant tank and the inside of the second annular cylinder.

[0014] In a further technical solution, a temperature monitor and electrical components are installed on the other side of the upper part of the magnetizing box, and the electrical components are connected to several magnetizing coil circuits.

[0015] In a further technical solution, a pair of fans are symmetrically provided on each of the two end walls of the magnetizing box.

[0016] In a further technical solution, a control box is installed on one side of the outer wall of the magnetizing box.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses an automatic continuous magnetizing device for neodymium iron boron (NdFeB). Through the arrangement of a spiral cooling pipe and a coolant tank, a water pump delivers coolant from the coolant tank to a first annular cylinder. The coolant in the first annular cylinder then enters the spiral cooling pipe through a first circular pipe. The coolant moves spirally within the spiral cooling pipe, extending the contact time between the coolant and the magnetizing coil. This allows the coolant to carry away the heat generated by the magnetizing coil, effectively dissipating heat. Furthermore, the arrangement of first and second heat sinks, with several pairs of first and second heat sinks contacting the outer wall of the magnetizing cylinder, transfers the heat generated by the magnetizing cylinder and the magnetizing coil to the spiral cooling pipe. The coolant within the spiral cooling pipe carries away the transferred heat, further facilitating heat dissipation for the magnetizing coil. Finally, through the water pump and the third connecting pipe, the coolant in the spiral cooling pipe enters the second annular cylinder through the second circular pipe, and the coolant in the second annular cylinder returns to the coolant tank through the third connecting pipe. This allows the water pump to circulate the coolant between the first annular cylinder, the second annular cylinder, the spiral cooling pipe, and the coolant tank, so as to continuously dissipate heat from the magnetizing coil.

[0018] This invention discloses an automatic continuous magnetizing device for neodymium iron boron (NdFeB). Through the arrangement of a first annular plate, a second annular plate, and a condenser, a spiral cooling pipe moves back and forth, causing the coolant to circulate within the first annular cylinder, the spiral cooling pipe, the second annular cylinder, and the condenser. This allows a large amount of low-temperature coolant to continuously and efficiently dissipate heat from the magnetizing coil. Furthermore, through the arrangement of a round rod, gears, fan blades, and racks, two gears move in conjunction with two fixed racks, with the outer walls of the gears meshing with the upper sides of the racks. The movement of the two gears is influenced by the meshing of the racks, causing the two gears and the round rod to rotate. The rotation of the round rod drives several fan blades to rotate, promoting gas flow within the magnetizing chamber, facilitating a combination of air cooling and water cooling for heat dissipation. Finally, through the arrangement of a slider, a spiral groove, and a sliding rod, the rotation of the round rod drives the slider to rotate, causing the slider to slide spirally within the spiral groove, with the ends of the spiral groove interconnected. Under the spiral guidance of the spiral groove, the round rod moves axially. During the back-and-forth movement of the spiral cooling tube, the two first heat sinks and the two second heat sinks alternately approach and move away from each other. This allows several pairs of first heat sinks and several pairs of second heat sinks to indirectly contact the outer wall of the magnetizing cylinder and avoid the magnetizing coil. This facilitates the movement of the first and second heat sinks along the heat sink movement path, thereby enabling heat transfer to the magnetizing cylinder at multiple locations. This prevents the magnetizing cylinder and magnetizing coil from experiencing localized overheating and improves the heat dissipation effect of the cooling assembly on the magnetizing coil. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the 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 only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is an isometric structural diagram of the magnetizing cylinder and magnetizing coil in this invention; Figure 3 This is a schematic diagram of the first isometric structure of the cooling assembly in this invention; Figure 4 This is a schematic diagram of the second isometric structure of the cooling assembly in this invention; Figure 5 This is an isometric structural diagram of the heat dissipation component in this invention; Figure 6 This is an isometric structural diagram of the sleeve in this invention; Figure 7 This is a schematic diagram of the movement path of the heat sink in this invention; Figure 8 This is a top view of the structure of the present invention; Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure at point AA; Figure 10 for Figure 8 Schematic diagram of the cross-sectional structure at point BB; Figure 11 for Figure 10 A magnified schematic diagram of the local structure at point D; Figure 12 This is a front view of the heat dissipation component in this invention. Figure 13 for Figure 12 Schematic diagram of the cross-sectional structure at the CC section; Figure 14 for Figure 13 A magnified schematic diagram of the structure at point E in the middle.

[0022] Explanation of reference numerals in the attached figures: 10 Magnetizing box, 11 Transmission mechanism, 12 Control box, 13 First annular cylinder, 14 Second annular cylinder, 15 Magnetizing cylinder, 16 Magnetizing coil, 17 Spiral cooling pipe, 18 First round pipe, 19 Second round pipe, 20 First annular plate, 21 Second annular plate, 22 Electric telescopic rod, 23 First one-way valve, 24 Second one-way valve, 25 Condenser, 26 First connecting pipe, 27 Second connecting pipe, 28 Sleeve, 29 Round rod, 30 First heat sink, 31 Elastic telescopic rod, 32 Second heat sink, 33 Connector, 34 Fan blade, 35 Gear, 36 Rack, 37 Slide bar, 38 T-block, 39 Spiral groove, 40 Slider, 41 Fan, 42 Third connecting pipe, 43 Coolant tank, 44 Water pump, 45 Temperature monitor, 46 Electrical components, 47 Heat sink movement path. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] As attached Figure 1 To be continued Figure 14 As shown: This invention provides an automatic continuous magnetization device for neodymium iron boron.

[0027] See attached document Figure 1 To be continued Figure 14 The system includes a magnetizing box 10, with a transmission mechanism 11 running through its interior. A first annular cylinder 13 and a second annular cylinder 14 are fixedly mounted at both ends of the interior of the magnetizing box 10. A magnetizing cylinder 15 is fixedly connected between the first annular cylinder 13 and the second annular cylinder 14. A magnetizing coil 16 is wound around the outer wall of the magnetizing cylinder 15. A cooling assembly is provided around the magnetizing cylinder 15, and the cooling assembly is equipped with several heat dissipation components. The cooling assembly includes a spiral cooling pipe 17, with a first circular pipe 18 at one end and a second circular pipe 19 at the other end. The heat dissipation assembly includes two sleeves 28. A round rod 29 is slidably provided inside one end of each sleeve 28, and a slide rod 37 is slidably provided inside the other end of each sleeve 28. A first heat dissipation fin 30 is fixedly provided at one end of each slide rod 37. A number of fan blades 34 are arranged in a circular array on the outer wall of the round rod 29. Two elastic telescopic rods 31 are symmetrically fixedly provided on the upper and lower sides of the spiral cooling pipe 17. Two second heat dissipation fins 32 are fixedly provided at the extended ends of the two elastic telescopic rods 31. A connector 33 is provided between each end of the first heat dissipation fin 30 and one end of the two second heat dissipation fins 32.

[0028] Preferred options are shown in the appendix. Figure 3 To be continued Figure 5 Appendix Figure 14The spiral cooling tube 17 is located around the magnetizing coil 16. Two sleeves 28 are symmetrically fixed on both sides of the spiral cooling tube 17. Two racks 36 are fixedly provided on the inner side walls of the magnetizing box 10. A gear 35 is fixedly provided on the outer wall of one end of the round rod 29. A slider 40 is fixedly provided on the outer wall of the other end of the round rod 29. The outer wall of the gear 35 meshes with the upper side of the rack 36.

[0029] Preferred options are shown in the appendix. Figure 6 Appendix Figure 14 The inner wall of the sleeve 28 is provided with a spiral groove 39 that is connected to the end. The slider 40 slides spirally in the spiral groove 39. A T-shaped block 38 is fixedly provided at one end of the round rod 29 facing the slide rod 37. The T-shaped block 38 is rotatably connected to the slide rod 37.

[0030] Preferred options are shown in the appendix. Figure 9 The first annular cylinder 13 has a first annular plate 20 slidably disposed inside, the second annular cylinder 14 has a second annular plate 21 slidably disposed inside, the first circular tube 18 is fixedly connected to the first annular plate 20, the second circular tube 19 is fixedly connected to the second annular plate 21, the first circular tube 18 has a first one-way valve 23 installed inside, and the second circular tube 19 has a second one-way valve 24 installed inside.

[0031] Preferred options are shown in the appendix. Figure 9 An electric telescopic rod 22 is installed inside the second annular cylinder 14, and the extended end of the electric telescopic rod 22 is fixedly connected to one side of the second annular plate 21.

[0032] Preferred options are shown in the appendix. Figure 9 A condenser 25 is installed on the lower side of the inside of the magnetizing box 10. One end of the condenser 25 is connected to the inside of the second annular cylinder 14 by a first connecting pipe 26, and the other end of the condenser 25 is connected to the inside of the first annular cylinder 13 by a second connecting pipe 27.

[0033] Preferred options are shown in the appendix. Figure 9 The upper side of the magnetizing box 10 is provided with a coolant tank 43 and a water pump 44. One end of the water pump 44 is connected to the inside of the coolant tank 43, and the other end of the water pump 44 is connected to the inside of the first annular cylinder 13. The inside of the coolant tank 43 is connected to the inside of the second annular cylinder 14 and a third connecting pipe 42 is provided.

[0034] Preferred options are shown in the appendix. Figure 9 A temperature monitor 45 and an electrical component 46 are installed on the other side of the upper part of the magnetizing box 10. The electrical component 46 is connected to several magnetizing coils 16.

[0035] Preferred options are shown in the appendix. Figure 10 A pair of fans 41 are symmetrically provided on the two end walls of the magnetizing box 10.

[0036] Preferred options are shown in the appendix. Figure 1 A control box 12 is installed on one side of the outer wall of the magnetizing box 10.

[0037] In the initial state, several pairs of first heat sinks 30 are in contact with the outer wall of the magnetizing cylinder 15, several pairs of second heat sinks 32 are in contact with the outer wall of the magnetizing cylinder 15, and several pairs of elastic telescopic rods 31 are in an extended state. When the elastic telescopic rods 31 are in the extended state, the springs inside the elastic telescopic rods 31 are stretched to generate elastic force. The magnetizing coils 16 are wound around the outer wall of the magnetizing cylinder 15, so that there are gaps between the magnetizing coils 16.

[0038] Specific usage of this invention: First, the workers place the bonded NdFeB magnetic rings on top of the transmission mechanism 11. The transmission mechanism 11 then transports the bonded NdFeB magnetic rings into the magnetization box 10. The electrical component 46 charges the magnetization cylinder 15 and the magnetization coil 16. According to Ampere's circuital law, an extremely strong instantaneous magnetic field is generated around the magnetization coil 16. The magnetic field strength can reach several Tesla (T), far exceeding the remanence of ordinary permanent magnets. The magnetic field generated by the magnetization coil 16 magnetizes the bonded NdFeB magnetic rings entering the magnetization box 10, thus enabling automatic and continuous magnetization of a large number of bonded NdFeB magnetic rings.

[0039] Secondly, when current flows through the magnetizing coil 16, heat is generated due to the resistance, causing the temperature of the magnetizing coil 16 to rise. At this time, the temperature monitor 45 monitors the temperature inside the magnetizing box 10. The cooling requirement of the magnetizing coil 16 in the magnetizing device is not constant. Different magnetization conditions will result in different amounts of heat generation. For example, in high-current or high-frequency magnetization operations, more heat may be generated. If the cooling components cannot be effectively adjusted according to the actual heat generation, it may affect the heat dissipation effect. If the cooling capacity is too small, it may not be able to dissipate all the heat, causing the magnetizing device to overheat; if the cooling capacity is too large, it may cause the magnetizing device to cool down too quickly, affecting the stability of the magnetizing device.

[0040] When the temperature monitor 45 detects a slow increase in the temperature inside the magnetizing box 10, the control system activates the cooling components for normal heat dissipation. The control system starts the water pump 44 and shuts down the condenser 25. The water pump 44 pumps coolant from the coolant tank 43 into the first annular cylinder 13. The coolant in the first annular cylinder 13 enters the spiral cooling pipe 17 through the first circular pipe 18. The coolant spirals within the spiral cooling pipe 17, extending the contact time between the coolant and the magnetizing coil 16, thus carrying away the heat generated by the magnetizing coil 16 and facilitating sufficient heat dissipation. Furthermore, several pairs of first heat sinks 30 and several pairs of second heat sinks 32 are in contact with the outer wall of the magnetizing cylinder 15, transferring the heat generated by the magnetizing cylinder 15 and the magnetizing coil 16 to the spiral cooling pipe 17. The coolant within the spiral cooling pipe 17 carries away the transferred heat, further facilitating heat dissipation for the magnetizing coil 16.

[0041] Next, the coolant in the spiral cooling pipe 17 enters the second annular cylinder 14 through the second circular pipe 19, and the coolant in the second annular cylinder 14 returns to the coolant tank 43 through the third connecting pipe 42, so that the coolant can be circulated between the first annular cylinder 13, the second annular cylinder 14, the spiral cooling pipe 17, and the coolant tank 43 by the water pump 44, so as to continuously dissipate heat from the magnetizing coil 16.

[0042] When the temperature monitor 45 detects a rapid increase in the temperature inside the magnetization box 10, the control system activates the cooling components for efficient heat dissipation. The control system controls two pairs of fans 41, which create convection currents within the magnetization box 10, greatly promoting airflow and thus providing air cooling for the magnetization coil 16.

[0043] Simultaneously, the control system starts the condenser 25 and shuts down the water pump 44. The electric telescopic rod 22 extends and retracts repeatedly, causing the second annular plate 21 to move back and forth within the second annular cylinder 14. The back-and-forth movement of the second annular plate 21 causes the second circular tube 19, the spiral cooling tube 17, and the first circular tube 18 to move back and forth. The back-and-forth movement of the first circular tube 18 causes the first annular plate 20 to move back and forth within the first annular cylinder 13.

[0044] When the spiral cooling pipe 17 moves toward the first annular cylinder 13, the movement of the spiral cooling pipe 17 drives the first circular pipe 18 and the first annular plate 20 to move toward the first annular cylinder 13. The movement of the first annular plate 20 allows the coolant in the first annular cylinder 13 to enter the spiral cooling pipe 17 through the first one-way valve 23 and the first circular pipe 18. The spiral movement of the coolant in the spiral cooling pipe 17 cools and dissipates heat from the magnetizing coil 16. Meanwhile, the coolant in the spiral cooling pipe 17 enters the second annular cylinder 14 through the second circular pipe 19 and the second one-way valve 24. At this time, the second annular plate 21 moves toward the first annular cylinder 13, increasing the volume of the solution in the second annular cylinder 14, which facilitates the entry of a large amount of coolant into the second annular cylinder 14.

[0045] When the spiral cooling pipe 17 moves toward the second annular cylinder 14, the movement of the spiral cooling pipe 17 drives the second circular pipe 19 and the second annular plate 21 to move toward the second annular cylinder 14. The movement of the second annular plate 21 forces the coolant in the second annular cylinder 14 through the first connecting pipe 26 into the condenser 25, where the condenser 25 cools the coolant. The cooled coolant then enters the first annular cylinder 13 through the second connecting pipe 27. At this time, the first annular plate 20 moves toward the second annular cylinder 14, increasing the volume of the solution in the first annular cylinder 13, which facilitates the entry of a large amount of cooled coolant into the first annular cylinder 13. This allows the coolant to circulate within the first annular cylinder 13, the spiral cooling pipe 17, the second annular cylinder 14, and the condenser 25 during the back-and-forth movement of the spiral cooling pipe 17, thereby enabling a large amount of low-temperature coolant to continuously and efficiently dissipate heat from the magnetizing coil 16.

[0046] Then, the reciprocating movement of the spiral cooling pipe 17 drives several heat dissipation components to move back and forth. This movement of the heat dissipation components causes the two sleeves 28 to move, which in turn drives the two round rods 29 and gears 35 to move. The two gears 35 move in conjunction with two racks 36, which are fixed in place. The outer wall of the gears 35 meshes with the upper side of the racks 36. The movement of the two gears 35, driven by the meshing of the racks 36, causes the two gears 35 and the round rods 29 to rotate. The rotation of the round rods 29 drives several fan blades 34 to rotate, promoting airflow within the magnetizing box 10, thus enabling a combination of air cooling and water cooling for heat dissipation.

[0047] Simultaneously, the rotation of the round rod 29 drives the slider 40 to rotate, causing the slider 40 to slide spirally within the spiral groove 39, whose ends are interconnected. Under the spiral guidance of the spiral groove 39, the round rod 29 moves axially. When the two round rods 29 move away from each other, the two round rods 29 moving away from each other also cause the two slide rods 37 to move away from each other, and the two slide rods 37 moving away from each other also cause the two first heat sinks 30 to move away from each other. Furthermore, under the elastic force of the springs in the two elastic telescopic rods 31, the two second heat sinks 32 move away from each other, thus enabling the two first heat sinks 30 and the two second heat sinks 32 to avoid the magnetizing coil 16. When the two round rods 29 move closer to each other, the two round rods 29 moving closer to each other also cause the two slide rods 37 and the first heat sinks 30 to move closer to each other. The two first heat sinks 30 moving closer to each other use the four connecting pieces 33 to pull the two second heat sinks 32, thus bringing the two second heat sinks 32 closer to each other. The two second heat sinks 32 moving closer to each other stretch the springs of the two elastic telescopic rods 31, generating elastic force. The two first heat sinks 30 and two second heat sinks 32 are moved to contact the outer wall of the magnetizing cylinder 15, thereby transferring heat to the magnetizing coil 16. This allows the two first heat sinks 30 and two second heat sinks 32 to alternately approach and move away from each other during the reciprocating movement of the spiral cooling pipe 17. Several pairs of first heat sinks 30 and several pairs of second heat sinks 32 can indirectly contact the outer wall of the magnetizing cylinder 15 and avoid the magnetizing coil 16, allowing the first heat sinks 30 and second heat sinks 32 to move along the heat sink movement path 47. This enables heat transfer to the magnetizing cylinder 15 at multiple locations, preventing localized overheating of the magnetizing cylinder 15 and the magnetizing coil 16, and improving the cooling effect of the cooling assembly on the magnetizing coil 16. The width of the gear 35 is smaller than the width of the rack 36, ensuring that the outer wall of the gear 35 meshes with the upper side of the rack 36 during the axial reciprocating movement of the round rod 29, allowing the round rod 29 to rotate and move axially back and forth. The rotation of the round rod 29 drives the T-block 38 to rotate, thereby causing the T-block 38 to rotate within the slide rod 37, so that the rotation of the round rod 29 cannot drive the slide rod 37 to rotate. The axial movement of the round rod 29 drives the axial movement of the slide rod 37 via the T-block 38, and the axial movement of the slide rod 37 drives the first heat sink 30 to move.

[0048] This invention discloses an automatic continuous magnetizing device for neodymium iron boron (NdFeB). Through the arrangement of a spiral cooling pipe 17 and a coolant tank 43, a water pump 44 is activated to transport coolant from the coolant tank 43 to a first annular cylinder 13. The coolant in the first annular cylinder 13 enters the spiral cooling pipe 17 through a first circular pipe 18. The coolant moves spirally within the spiral cooling pipe 17, thereby extending the contact time between the coolant and the magnetizing coil 16. This allows the coolant to carry away the heat generated by the magnetizing coil 16, facilitating sufficient heat dissipation. Furthermore, the arrangement of first heat sinks 30 and second heat sinks 32, with several pairs of first heat sinks 30 and several pairs of second heat sinks 32 in contact with the outer wall of the magnetizing cylinder 15, transfers the heat generated by the magnetizing cylinder 15 and the magnetizing coil 16 to the spiral cooling pipe 17. The coolant within the spiral cooling pipe 17 carries away the transferred heat, further achieving heat dissipation for the magnetizing coil 16. Finally, through the water pump 44 and the third connecting pipe 42, the coolant in the spiral cooling pipe 17 enters the second annular cylinder 14 through the second circular pipe 19, and the coolant in the second annular cylinder 14 returns to the coolant tank 43 through the third connecting pipe 42, so that the coolant can be circulated between the first annular cylinder 13, the second annular cylinder 14, the spiral cooling pipe 17, and the coolant tank 43 by the water pump 44, so as to continuously dissipate heat from the magnetizing coil 16.

[0049] This invention discloses an automatic continuous magnetizing device for neodymium iron boron (NdFeB). Through the arrangement of a first annular plate 20, a second annular plate 21, and a condenser 25, and the reciprocating movement of a spiral cooling pipe 17, coolant circulates within the first annular cylinder 13, the spiral cooling pipe 17, the second annular cylinder 14, and the condenser 25. This allows a large amount of low-temperature coolant to continuously and efficiently dissipate heat from the magnetizing coil 16. Furthermore, through the arrangement of a round rod 29, gears 35, fan blades 34, and racks 36, two gears 35 move in conjunction with two fixed racks 36, and the outer walls of the gears 35 mesh with the upper sides of the racks 36. The movement of the two gears 35 is influenced by the meshing of the racks 36, causing the two gears 35 and the round rod 29 to rotate. The rotation of the round rod 29 drives the rotation of several fan blades 34, which promotes gas flow within the magnetizing box 10, facilitating a combination of air cooling and water cooling for heat dissipation. Finally, through the arrangement of slider 40, spiral groove 39, and slide rod 37, the rotation of the round rod 29 drives the slider 40 to rotate, causing the slider 40 to slide spirally within the spiral groove 39, with the ends of the spiral groove 39 interconnected. Under the spiral guidance of the spiral groove 39, the round rod 29 moves axially. During the back-and-forth movement of the spiral cooling pipe 17, the two first heat sinks 30 and the two second heat sinks 32 alternately approach and move away from each other. This allows several pairs of first heat sinks 30 and several pairs of second heat sinks 32 to indirectly contact the outer wall of the magnetizing cylinder 15 and avoid the magnetizing coil 16, so that the first heat sinks 30 and second heat sinks 32 can move along the heat sink movement path 47. This enables heat transfer to the magnetizing cylinder 15 at multiple locations, preventing local overheating of the magnetizing cylinder 15 and magnetizing coil 16, and improving the heat dissipation effect of the cooling assembly on the magnetizing coil 16.

[0050] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An automatic continuous magnetization device for neodymium iron boron magnets, characterized in that: The device includes a magnetizing box (10), a transmission mechanism (11) is provided through the front and back of the magnetizing box (10), a first annular cylinder (13) and a second annular cylinder (14) are fixedly provided at both ends of the magnetizing box (10), a magnetizing cylinder (15) is fixedly connected between the first annular cylinder (13) and the second annular cylinder (14), a magnetizing coil (16) is wound around the outer wall of the magnetizing cylinder (15), a cooling assembly is provided around the magnetizing cylinder (15), and a plurality of heat dissipation components are provided on the cooling assembly; The cooling assembly includes a spiral cooling pipe (17), one end of which is provided with a first circular pipe (18), and the other end of which is provided with a second circular pipe (19); The heat dissipation assembly includes two sleeves (28), with a round rod (29) slidably disposed inside one end of each sleeve (28) and a sliding rod (37) slidably disposed inside the other end of each sleeve (28). A first heat dissipation fin (30) is fixedly disposed at one end of each sliding rod (37). Several fan blades (34) are arranged in a circular array on the outer wall of the round rod (29). Two elastic telescopic rods (31) are symmetrically fixedly disposed on the upper and lower sides of the spiral cooling pipe (17). Two second heat dissipation fins (32) are fixedly disposed at the extended ends of the two elastic telescopic rods (31). A connector (33) is provided between each end of the first heat dissipation fin (30) and one end of the two second heat dissipation fins (32).

2. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: The spiral cooling pipe (17) is located around the magnetizing coil (16). The two sleeves (28) are symmetrically fixed on both sides of the spiral cooling pipe (17). Two racks (36) are fixed on the inner side walls of the magnetizing box (10). A gear (35) is fixed on the outer wall of one end of the round rod (29). A slider (40) is fixed on the outer wall of the other end of the round rod (29). The outer wall of the gear (35) meshes with the upper side of the rack (36).

3. The automatic continuous magnetization device for neodymium iron boron according to claim 2, characterized in that: The inner wall of the sleeve (28) is provided with a spiral groove (39) that is connected to the end. The slider (40) slides spirally in the spiral groove (39). A T-shaped block (38) is fixedly provided at one end of the round rod (29) facing the slide rod (37). The T-shaped block (38) is rotatably connected to the slide rod (37).

4. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: The first annular cylinder (13) has a first annular plate (20) slidably disposed inside, and the second annular cylinder (14) has a second annular plate (21) slidably disposed inside. The first circular tube (18) is fixedly connected to the first annular plate (20), and the second circular tube (19) is fixedly connected to the second annular plate (21). The first circular tube (18) has a first one-way valve (23) installed inside, and the second circular tube (19) has a second one-way valve (24) installed inside.

5. The NdFeB automatic continuous magnetization device according to claim 4, characterized in that: An electric telescopic rod (22) is installed inside the second annular cylinder (14), and the extended end of the electric telescopic rod (22) is fixedly connected to one side of the second annular plate (21).

6. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: A condenser (25) is installed on the lower side of the inside of the magnetizing box (10). One end of the condenser (25) is connected to the inside of the second annular cylinder (14) by a first connecting pipe (26), and the other end of the condenser (25) is connected to the inside of the first annular cylinder (13) by a second connecting pipe (27).

7. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: The upper side of the magnetizing box (10) is provided with a coolant tank (43) and a water pump (44). One end of the water pump (44) is connected to the interior of the coolant tank (43), and the other end of the water pump (44) is connected to the interior of the first annular cylinder (13). The interior of the coolant tank (43) is connected to the interior of the second annular cylinder (14) with a third connecting pipe (42).

8. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: A temperature monitor (45) and an electrical component (46) are installed on the other side of the upper part of the magnetizing box (10). The electrical component (46) is connected to several magnetizing coils (16) by circuitry.

9. The NdFeB automatic continuous magnetization device according to claim 1, characterized in that: A pair of fans (41) are symmetrically provided on the two end walls of the magnetizing box (10).

10. The automatic continuous magnetization device for neodymium iron boron according to claim 1, characterized in that: A control box (12) is installed on one side of the outer wall of the magnetizing box (10).

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