Permanent magnet heating equipment and use method thereof
The permanent magnet heating equipment uses alternating magnetic field eddy current to heat the cylinder workpiece, which solves the problems of traditional low heating efficiency and gas safety hazards, and achieves efficient and uniform heating effects.
Patent Information
- Application Number
- CN202510418236.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2025-08-05
AI Technical Summary
Traditional heating devices heat cylinder workpieces inefficiently, unable to achieve local precise heating, and there are gas safety hazards.
Using a permanent magnet heating device including the first, second and third permanent magnet components, the side walls and tops of the cylindrical workpiece are heated by an alternating magnetic field by heating the side walls and tops of the cylindrical workpiece by the alternating magnetic field. The assembly can be rotated about the axis to achieve precise heating and avoid local overheating.
Significantly shorten the heating time, improve heating efficiency, achieve uniform temperature distribution, avoid gas safety issues, and meet product quality requirements.
Smart Images
Figure CN120434848A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cylindrical workpiece heating, and in particular to a permanent magnet heating device and a method for using the same. Background Art
[0002] Conventional heating devices typically use flames generated by natural gas combustion to heat cylindrical workpieces. Heating a cylindrical workpiece to a certain temperature often takes more than 30 minutes, resulting in low heating efficiency.
[0003] Therefore, how to improve heating efficiency becomes a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention
[0004] The present invention provides a permanent magnet heating device and a method of using the same, in order to solve the problem of how to improve heating efficiency.
[0005] In one aspect, the present invention provides a permanent magnet heating device, comprising: The first permanent magnet assembly is in a closed ring shape; The second permanent magnet assembly is disposed in the first permanent magnet assembly and is in a closed ring shape; an accommodating cavity is formed between the outer wall of the second permanent magnet assembly and the inner wall of the first permanent magnet assembly; the accommodating cavity is used to accommodate the side wall of the cylindrical workpiece; a third permanent magnet assembly, disposed within the second permanent magnet assembly; The first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly are rotatable around the axis of the first permanent magnet assembly to heat the cylindrical workpiece.
[0006] In some embodiments, the first permanent magnet assembly includes: There are multiple first permanent magnet rings stacked vertically. The second permanent magnet assembly comprises: The second permanent magnet rings are multiple and stacked in layers along the vertical direction; The third permanent magnet assembly includes: The third permanent magnetic rings are multiple and arranged in layers from the outside to the inside.
[0007] In some embodiments, each first permanent magnet ring comprises: There are multiple first N-pole permanent magnet blocks; There are a plurality of first S-pole permanent magnet blocks, which are alternately arranged with a plurality of first N-pole permanent magnet blocks along the circumference of the first permanent magnet ring; Each second permanent magnet ring comprises: There are multiple second N-pole permanent magnet blocks; There are multiple second S-pole permanent magnet blocks, which are alternately arranged with multiple second N-pole permanent magnet blocks along the circumference of the second permanent magnet ring; Each third permanent magnet ring includes: There are multiple third N-pole permanent magnet blocks; There are multiple third S-pole permanent magnet blocks, which are alternately arranged with multiple third N-pole permanent magnet blocks along the circumference of the third permanent magnet ring.
[0008] In some embodiments, further comprising: A first bearing seat; a first permanent magnet assembly, a second permanent magnet assembly, and a third permanent magnet assembly are mounted on the first bearing seat; the first bearing seat is capable of rotating around its own axis to drive the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly to rotate; The first driver has an output shaft connected to the first bearing seat and is used to drive the first bearing seat to rotate.
[0009] In some embodiments, further comprising: A first bearing seat is formed with a clearance hole in the middle; a first permanent magnet assembly and a second permanent magnet assembly are mounted on the first bearing seat; the first bearing seat is capable of rotating around its own axis to drive the first permanent magnet assembly and the second permanent magnet assembly; The second bearing seat is arranged in the clearance hole; the third permanent magnet component is installed on the second bearing seat; the second bearing seat can move in the vertical direction and can rotate around its own axis to drive the third permanent magnet component.
[0010] In some embodiments, further comprising: A clamping assembly is provided above the first permanent magnet assembly, the second permanent magnet assembly and the third permanent magnet assembly, and is used to clamp or release the cylindrical workpiece; the clamping assembly can move in a vertical direction to drive the cylindrical workpiece; The second driver has an output shaft connected to the clamping assembly and is used to drive the clamping assembly.
[0011] In some embodiments, further comprising: A frame; a first permanent magnet assembly, a second permanent magnet assembly, a third permanent magnet assembly and a clamping assembly are installed on the frame; Control components, mounted on the rack.
[0012] In some of the embodiments, the bottom of the frame is provided with embedded parts; The base is arranged below the frame and has embedded parts embedded inside.
[0013] On the other hand, the present invention also provides a method for using a permanent magnet heating device, comprising the following steps: S1. Place the side wall of the cylindrical workpiece in the accommodating cavity; S2. Rotate the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly to heat the cylindrical workpiece.
[0014] The beneficial effects of the present invention are as follows: the permanent magnet heating device of the present invention is provided with a first permanent magnet assembly, a second permanent magnet assembly and a third permanent magnet assembly. The first permanent magnet assembly and the second permanent magnet assembly rotate around the axis of the first permanent magnet assembly to generate an alternating magnetic field. With the help of the alternating magnetic field, eddy currents are generated inside the side wall of a cylindrical workpiece such as a wheel hub, and the side wall of the wheel hub is heated to a certain temperature. At the same time, the third permanent magnet assembly rotates around the axis of the first permanent magnet assembly to generate an alternating magnetic field. With the help of the alternating magnetic field, eddy currents are generated inside the top of the wheel hub, and the top of the wheel hub is heated to a certain temperature. Compared with the form of heating using natural gas, the time required for heating is greatly shortened. The heating efficiency is improved, and precise heating of the side wall and top of the hub is achieved; at the same time, compared with the form of only setting a permanent magnetic component around the outer periphery of the side wall of the hub, the lower edge of the side wall of the hub is avoided from overheating and burning, while the temperature of the top of the hub does not meet the standard; in addition, compared with the form of only setting a permanent magnetic component around the inner periphery of the side wall of the hub, the middle part of the side wall of the hub is avoided from overheating and burning, while the temperature of the top of the hub does not meet the standard; in addition, compared with the form of only setting a permanent magnetic component around the inner periphery and outer periphery of the side wall of the hub, the side wall of the hub is avoided from overheating and burning, while the temperature of the top of the hub does not meet the standard. Therefore, during the heating process of the hub, the permanent magnetic heating device of the present invention makes the temperature of each part of the hub more reasonable, the temperature distribution more uniform, improves energy utilization, avoids gas safety issues, and meets product quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of some specific embodiments of a permanent magnet heating device of the present invention; Figure 2 yes Figure 1 A cross-sectional view of the permanent magnet heating device shown; Figure 3 1 is a schematic diagram of the combined structure of the first permanent magnet assembly, the second permanent magnet assembly and the third permanent magnet assembly; Figure 4 It is a schematic diagram of the installation structure of the heat distribution component.
[0016] In the accompanying drawings, 110, the first permanent magnet assembly; 111, the first permanent magnet ring; 120, the second permanent magnet assembly; 121, the second permanent magnet ring; 130, the third permanent magnet assembly; 131, the third permanent magnet ring; 140, the first supporting seat; 150, the clamping assembly; 151, the lifting plate; 152, the clamping claw; 160, the frame; 161, the embedded part; 170, the control assembly; 181, the first drive; 182, the second drive; 190, the heat uniforming assembly; 191, the heat conductive shell; 192, the capillary core; 193, the magnetic isolation sheet; 200, the hub. DETAILED DESCRIPTION
[0017] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] As described in the background, conventional heating devices typically utilize flames generated by natural gas combustion to heat cylindrical workpieces. Heating a cylindrical workpiece to a specific temperature often takes over 30 minutes, resulting in low heating efficiency. These devices only achieve overall heating, failing to achieve precise local heating. Therefore, improving heating efficiency has become a pressing technical challenge for those skilled in the art.
[0019] It should be noted that the cylindrical workpiece may be a wheel hub, the bottom end of which is an open structure, and at least a portion of the top end is a closed structure or a hollow structure.
[0020] To solve the above problems, on the one hand, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The present invention provides a permanent magnet heating device, comprising a first permanent magnet assembly 110, a second permanent magnet assembly 120 and a third permanent magnet assembly 130. The first permanent magnet assembly 110 is in the shape of a closed ring. The second permanent magnet assembly 120 is arranged in the first permanent magnet assembly 110 and is in the shape of a closed ring. An accommodating cavity is formed between the outer wall of the second permanent magnet assembly 120 and the inner wall of the first permanent magnet assembly 110. The accommodating cavity is used to accommodate the side wall of the cylindrical workpiece. The third permanent magnet assembly 130 is arranged in the second permanent magnet assembly 120. The first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 can rotate around the axis of the first permanent magnet assembly 110 to heat the cylindrical workpiece.
[0021] The working process and principle of permanent magnet heating equipment are as follows: First, the sidewall of a cylindrical workpiece (such as hub 200) is placed within the accommodating cavity. The first permanent magnet assembly 110 is positioned around the outer circumference of the hub 200's sidewall, the second permanent magnet assembly 120 is positioned around the inner circumference of the hub 200's sidewall, and the third permanent magnet assembly 130 is positioned below the top of the hub 200. The first, second, and third permanent magnet assemblies 110, 120, and 130 then rotate about the axis of the first permanent magnet assembly 110 to generate an alternating magnetic field. This alternating magnetic field generates eddy currents within the sidewalls and top of the hub 200, heating the sidewalls and top of the hub 200 to a temperature between 200°C and 450°C. Compared to heating with natural gas, this significantly shortens the heating time (approximately 60 seconds), improves heating efficiency, and enables precise heating of the sidewalls and top of the hub 200. Compared to the form of only setting permanent magnet components around the outer periphery of the side wall of the hub 200, the situation that the lower edge of the side wall of the hub 200 is overheated and burned while the temperature of the top of the hub 200 does not meet the standard is avoided. Compared to the form of only setting permanent magnet components around the inner periphery of the side wall of the hub 200, the situation that the middle part of the side wall of the hub 200 is overheated and burned while the temperature of the top of the hub 200 does not meet the standard is avoided. Compared to the form of only setting permanent magnet components around the inner periphery and outer periphery of the side wall of the hub 200, the situation that the side wall of the hub 200 is overheated and burned while the temperature of the top of the hub 200 does not meet the standard is avoided. Therefore, during the process of heating the hub 200, the permanent magnet heating device of the present invention makes the temperature of each part of the hub 200 more reasonable and the temperature distribution more uniform, improves energy utilization, avoids gas safety issues, and meets product quality requirements.
[0022] Preferably, the first permanent magnet assembly 110 as a whole may be in a circular ring structure, a square ring structure or an irregular ring structure. The second permanent magnet assembly 120 as a whole may be in a circular ring structure, a square ring structure or an irregular ring structure.
[0023] Preferably, the axes of the first permanent magnet assembly 110 and the second permanent magnet assembly 120 are located on the same vertical line to ensure the heating effect and improve the temperature distribution.
[0024] Specifically, in the example, Figure 1 、 Figure 2 and Figure 3As shown, the first permanent magnet assembly 110 includes a plurality of first permanent magnet rings 111. These first permanent magnet rings 111 are stacked vertically, enabling simultaneous heating of the upper, middle, and lower edges of the sidewall of the hub 200. Compared to a configuration with only a single layer of first permanent magnet rings 111, this ensures heating efficiency and promotes uniform temperature distribution in the axial and circumferential directions of the hub 200. The second permanent magnet assembly 120 includes a plurality of second permanent magnet rings 121. These second permanent magnet rings 121 are stacked vertically, enabling simultaneous heating of the upper, middle, and lower edges of the sidewall of the hub 200. Compared to a configuration with only a single layer of second permanent magnet rings 121, this ensures heating efficiency and promotes uniform temperature distribution in the axial and circumferential directions of the hub 200. The third permanent magnet assembly 130 includes a plurality of third permanent magnet rings 131. These third permanent magnet rings 131 are located in the same plane and arranged in layers from the outside inward. Compared to a configuration in which only a single layer of third permanent magnet rings 131 is provided, heating efficiency is improved, facilitating uniform radial temperature distribution at the top of the hub 200. Each first permanent magnet ring 111 includes a plurality of first north-pole permanent magnet blocks and a plurality of first south-pole permanent magnet blocks. The plurality of first south-pole permanent magnet blocks and the plurality of first north-pole permanent magnet blocks are arranged alternately along the circumference of the first permanent magnet ring 111. Each second permanent magnet ring 121 includes a plurality of second north-pole permanent magnet blocks and a plurality of second south-pole permanent magnet blocks. The plurality of second south-pole permanent magnet blocks and the plurality of second north-pole permanent magnet blocks are arranged alternately along the circumference of the second permanent magnet ring 121. Each third permanent magnet ring 131 includes a plurality of third north-pole permanent magnet blocks and a plurality of third south-pole permanent magnet blocks. The plurality of third south-pole permanent magnet blocks and the plurality of third north-pole permanent magnet blocks are arranged alternately along the circumference of the third permanent magnet ring 131. It should be noted that when the top surface of the cylindrical workpiece is non-planar, the plurality of third permanent magnet rings 131 do not need to coexist in the same plane, to ensure more uniform heating of the top of the cylindrical workpiece. More specifically, a plurality of first S-pole permanent magnet blocks and a plurality of first N-pole permanent magnet blocks are alternately spaced or alternately adjacently arranged along the circumference of the first permanent magnet ring 111. When the first permanent magnet assembly 110 rotates around its own axis, a uniform petal-shaped magnetic field line can be formed on the entire side wall of the hub 200 and a large eddy current can be generated to uniformly and quickly heat the side wall of the hub 200. A plurality of second S-pole permanent magnet blocks and a plurality of second N-pole permanent magnet blocks are alternately spaced or alternately adjacently arranged along the circumference of the second permanent magnet ring 121. When the second permanent magnet assembly 120 rotates around the first permanent magnet ring 121, a uniform petal-shaped magnetic field line can be formed on the entire side wall of the hub 200 and a large eddy current can be generated to uniformly and quickly heat the side wall of the hub 200. When the axis of the component 110 rotates, uniform petal-shaped magnetic lines of force can be formed on the entire side wall of the hub 200 and large eddy currents can be generated to uniformly and quickly heat the side wall of the hub 200; multiple third S-pole permanent magnet blocks and multiple third N-pole permanent magnet blocks are alternately spaced or alternately adjacent to each other along the circumference of the third permanent magnet ring 131. When the third permanent magnet component 130 rotates around the axis of the first permanent magnet component 110, uniform petal-shaped magnetic lines of force can be formed at the bottom of the hub 200 and large eddy currents can be generated to uniformly and quickly heat the bottom of the hub 200.
[0025] In some exemplary embodiments, the first permanent magnet ring 111 and the second permanent magnet ring 121 are in the form of a Halbach array, so that the inner magnetic field of the first permanent magnet component 110 is relatively stronger and the outer magnetic field of the first permanent magnet component 110 is relatively weaker, and the outer magnetic field of the second permanent magnet component 120 is relatively stronger and the outer magnetic field of the second permanent magnet component 120 is relatively weaker, thereby effectively increasing the heat penetration depth and heat penetration efficiency, so as to quickly and evenly heat the hub 200.
[0026] In some practical applications, such as Figure 2 and Figure 3 As shown, the permanent magnet heating device also includes a first bearing seat 140 and a first driver 181. The first bearing seat 140 is used to carry the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130. The first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 are mounted on the first bearing seat 140. The first bearing seat 140 can rotate around its own axis to drive the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 to rotate. The output shaft of the first driver 181 is connected to the first bearing seat 140, and is used to drive the first bearing seat 140 to rotate, thereby driving the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 to rotate.
[0027] Preferably, the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 are respectively detachably mounted on the first bearing seat 140. For example, a first mounting groove, a second mounting groove and a third mounting groove are formed on the first bearing seat 140. The first permanent magnet assembly 110 is clamped in the first mounting groove, the second permanent magnet assembly 120 is clamped in the second mounting groove, and the third permanent magnet assembly 130 is clamped in the third mounting groove, so that the first bearing seat 140, the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 are assembled for use and disassembled and replaced. Of course, the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130 can also be bonded to the first bearing seat 140 and assembled into a whole with the first bearing seat 140 for use.
[0028] Preferably, the first driver 181 is arranged below the first bearing seat 140. The first driver 181 can be a rotary driver, and the output shaft is fixedly connected to the middle part of the bottom surface of the first bearing seat 140, and is used to drive the first bearing seat 140 to rotate. The first driver 181 can also be a linear driver, which is connected to the first bearing seat 140 through a first transmission mechanism, and converts the linear motion into rotary motion through the first transmission mechanism to drive the first bearing seat 140 to rotate. The rotary driver can be a servo motor with high control accuracy. The rotary driver can also be a stepper motor with low manufacturing cost. The linear driver can be an oil cylinder or an air cylinder, which uses the input and output of the working fluid to accurately control the movement amplitude. The linear driver can also be an electric push rod, which does not require the help of a working fluid, which is conducive to improving the cleanliness of the working environment.
[0029] In some other practical applications, the permanent magnet heating device further includes a first bearing seat 140, a second bearing seat, a first driver 181, and a third driver. The first bearing seat 140 is used to carry the first permanent magnet assembly 110 and the second permanent magnet assembly 120, while the second bearing seat is used to carry the third permanent magnet assembly 130. A clearance hole is formed in the middle of the first bearing seat 140. The first permanent magnet assembly 110 and the second permanent magnet assembly 120 are mounted on the first bearing seat 140. The first bearing seat 140 can rotate around its own axis to drive the first permanent magnet assembly 110 and the second permanent magnet assembly 120. The second bearing seat is arranged in the clearance hole. The third permanent magnet assembly 130 is mounted on the second bearing seat. The second bearing seat can move in the vertical direction and can rotate around its own axis to drive the third permanent magnet assembly 130 to move and rotate in the vertical direction. The output shaft of the third driver is connected to the second bearing seat, and can drive the second bearing seat to move in the vertical direction, thereby driving the third permanent magnet assembly 130 to move in the vertical direction, so as to adjust the distance between the third permanent magnet assembly 130 and the top of the hub 200, thereby adjusting the heating efficiency and heating effect. A receiving groove is formed at the output end of the output shaft of the first driver 181. The third driver is installed in the receiving groove. The output end face of the output shaft of the first driver 181 is connected to the first bearing seat 140. The first driver 181 is used to drive the first bearing seat 140 and the third driver to rotate, thereby driving the first permanent magnet assembly 110, the second permanent magnet assembly 120, the second bearing seat and the third permanent magnet assembly 130 to rotate.
[0030] Preferably, the first permanent magnet assembly 110 and the second permanent magnet assembly 120 are respectively detachably mounted on the first bearing seat 140. The third permanent magnet assembly 130 is detachably mounted on the second bearing seat. For example, a first mounting groove and a second mounting groove are formed on the first bearing seat 140, and a third mounting groove is formed on the second bearing seat. The first permanent magnet assembly 110 is clamped in the first mounting groove, the second permanent magnet assembly 120 is clamped in the second mounting groove, and the third permanent magnet assembly 130 is clamped in the third mounting groove, so as to facilitate the assembly, use, disassembly and replacement of the first bearing seat 140, the second bearing seat, the first permanent magnet assembly 110, the second permanent magnet assembly 120 and the third permanent magnet assembly 130.
[0031] Preferably, a third actuator is positioned below the second support. This third actuator can be an oil or air cylinder, utilizing the input and output of a working fluid to precisely control the amplitude of movement. Alternatively, the third actuator can be an electric push rod, eliminating the need for a working fluid and improving the cleanliness of the working environment.
[0032] Specifically, in the example, Figure 1 As shown, the permanent magnet heating apparatus further includes a clamping assembly 150 and a second driver 182. The clamping assembly 150 is disposed above the first permanent magnet assembly 110, the second permanent magnet assembly 120, and the third permanent magnet assembly 130, and is configured to clamp or release the cylindrical workpiece. Furthermore, the clamping assembly 150 is capable of vertical movement, thereby driving the cylindrical workpiece in the vertical direction. The output shaft of the second driver 182 is connected to the clamping assembly 150, for driving the clamping assembly 150 in the vertical direction.
[0033] It should be noted that the clamping assembly 150 includes a lifting plate 151 and a plurality of clamping jaws 152. The lifting plate 151 is connected to the output shaft of the second driver 182. The plurality of clamping jaws 152 are evenly mounted on the lifting plate 151 along its circumference. The plurality of clamping jaws 152 cooperate with each other to clamp or release the wheel hub 200. The second driver 182 can drive the lifting plate 151 to move up and down, thereby driving the clamping jaws 152 and the wheel hub 200 to move up and down.
[0034] Preferably, the second driver 182 is arranged above the clamping assembly 150. The second driver 182 can be a rotary driver, which is connected to the lifting plate 151 through a second transmission mechanism, and the rotary motion is converted into linear motion through the second transmission mechanism to drive the lifting plate 151 to move up and down. The second driver 182 can also be a linear driver, and the output shaft is fixedly connected to the middle of the top surface of the lifting plate 151 to drive the lifting plate 151 to move up and down. The rotary driver can be a servo motor with high control accuracy. The rotary driver can also be a stepper motor with low manufacturing cost. The linear driver can be an oil cylinder or an air cylinder, which uses the input and output of the working fluid to accurately control the movement amplitude. The linear driver can also be an electric push rod, which does not require the help of a working fluid, which is conducive to improving the cleanliness of the working environment.
[0035] Preferably, the clamping jaws 152 are mounted on the lifting plate 151 via a return spring. When clamping the wheel hub 200, the multiple clamping jaws 152 are first moved away from each other. The force of the return spring to restore the deformation drives the multiple clamping jaws 152 to move toward each other to clamp the wheel hub 200.
[0036] Specifically, in the example, Figure 1 and Figure 2 As shown, the permanent magnet heating device also includes a frame 160, a support frame, a control assembly 170, and a base. The frame 160 is a hollow structure. The top surface of the frame 160 serves as an operating table. A cantilever is formed on the top of the frame 160. The support frame is mounted on the cantilever. The second driver 182 is mounted within the support frame. The first driver 181 is mounted inside the frame 160. The first permanent magnet assembly 110, the second permanent magnet assembly 120, and the third permanent magnet assembly 130 are mounted on the operating table. The clamping assembly 150 is mounted on the cantilever via the second driver 182. The control assembly 170 is mounted on the frame 160. An embedded part 161 is provided at the bottom of the frame 160. The base is provided below the frame 160 to support and secure the frame 160. The embedded part 161 is embedded within the base. This effectively reduces the vibration amplitude of the frame 160 and improves the positional stability of the frame 160.
[0037] Preferably, heat dissipation holes are formed on at least one side of the rack 160 to facilitate heat dissipation of electrical components inside the rack 160 .
[0038] Preferably, the control assembly 170 includes a controller, a contour detection sensor, a position detection sensor, and a temperature detection sensor. The controller is rotatably mounted on one side of the frame 160 for ease of operation. The controller is electrically connected to the contour detection sensor, the position detection sensor, the temperature detection sensor, the first driver 181, and the second driver 182, respectively. The contour detection sensor is mounted on the cantilever and is used to detect the contour of the wheel hub 200. The position detection sensor is mounted on the operating table and is used to detect whether the wheel hub 200 is in place and to detect the position of the third permanent magnet assembly 130. The temperature detection sensor is mounted at a specific location on the operating table and is used to detect the temperature at a specific location on the wheel hub 200. The controller is capable of receiving signals detected by the detection sensors and controlling whether the first driver 181 and the second driver 182 are in operation based on the detection signals, as well as controlling the rotation speed of the first driver 181 and the heating temperature of the wheel hub 200.
[0039] Preferably, an embedded rod is provided at each of the four corners of the bottom of the frame 160, which can effectively reduce the vibration amplitude of the frame 160 and improve the position stability of the frame 160. The bottom of each embedded rod is bent, which can further improve the stability of the connection between the embedded rod and the base.
[0040] Preferably, the foundation is a concrete foundation.
[0041] Specifically, in the example, Figure 4 As shown, the permanent magnet heating device further includes a heat distribution assembly 190. The heat distribution assembly 190 is adapted to be detachably mounted on the cylindrical workpiece. When the heat distribution assembly 190 is mounted on the wheel hub 200, the temperature of each part of the wheel hub 200 is made more uniform.
[0042] It should be noted that the center of the hub 200 bulges downward, and therefore, the temperature of the center of the hub 200 is significantly higher than that of the spokes. To prevent the center of the hub 200 from overheating, a heat distribution assembly 190 is installed on the top surface of the hub 200, allowing heat from the sidewalls of the hub 200 and the center of the hub 200 to be quickly transferred to the spokes.
[0043] Preferably, the heat distribution assembly 190 includes a heat-conducting shell 191, a capillary wick 192, and a magnetic barrier 193. The heat-conducting shell 191 is made of copper and serves to quickly conduct heat. The heat-conducting shell 191 has a circular structure when projected downward from the top. The bottom surface of the heat-conducting shell 191 has a downwardly protruding center portion forming a first insertion portion, and the bottom surface also has a downwardly protruding second insertion portion. There are multiple second insertion portions, evenly distributed along the circumference of the heat-conducting shell 191. When the heat distribution assembly 190 is installed on the top of the hub 200, the first insertion portion can be inserted into the through-hole in the center of the hub 200, and each second insertion portion can be inserted between each adjacent spoke. This eliminates the need for additional mounting holes in the hub 200 and ensures product integrity. The capillary wick 192 is disposed within the heat-conducting shell 191. Liquid is adsorbed within the capillary wick 192. The capillary wick 192 facilitates liquid flow. The heat-conducting shell 191 and the capillary wick 192 enable rapid heat conduction. The magnetic isolation sheet 193 has a high temperature resistant magnetic isolation function and is installed on the bottom surface of the heat conductive shell 191 to isolate the heat conductive shell 191 from the magnetic field to prevent the heat conductive shell 191 itself from being heated by the magnetic field.
[0044] On the other hand, the present invention also provides a method for using a permanent magnet heating device, comprising the following steps: S1. Place the side wall of the cylindrical workpiece in the accommodating cavity.
[0045] In this step, the sidewall of the cylindrical workpiece is placed into the accommodating cavity using manual force or the clamping assembly 150. At this point, the first permanent magnet assembly 110 is disposed around the outer periphery of the sidewall of the hub 200, the second permanent magnet assembly 120 is disposed around the inner periphery of the sidewall of the hub 200, and the third permanent magnet assembly 130 is located below the top of the hub 200.
[0046] S2. Rotate the first permanent magnet assembly 110, the second permanent magnet assembly 120, and the third permanent magnet assembly 130 to heat the cylindrical workpiece. The first permanent magnet assembly 110, the second permanent magnet assembly 120, and the third permanent magnet assembly 130 rotate about the axis of the first permanent magnet assembly 110 to generate an alternating magnetic field. This alternating magnetic field generates eddy currents within the sidewalls of the hub 200, heating the sidewalls and top of the hub 200 to a temperature of 200°C to 450°C. Compared to heating with natural gas, this significantly shortens the heating time (approximately 60 seconds), improves heating efficiency, and achieves precise heating of the sidewalls and top of the hub 200. Compared to installing permanent magnet assemblies only around the outer periphery of the sidewalls of the hub 200, this prevents the lower edge of the sidewalls of the hub 200 from overheating while the top temperature of the hub 200 falls below the specified temperature. Compared to the form of only setting permanent magnet components around the inner periphery of the side wall of the hub 200, this avoids the situation where the middle part of the side wall of the hub 200 is overheated or burned, while the temperature of the top of the hub 200 does not meet the standard. Compared to the form of only setting permanent magnet components around the inner periphery and outer periphery of the side wall of the hub 200, this avoids the situation where the side wall of the hub 200 is overheated or burned, while the temperature of the top of the hub 200 does not meet the standard. Therefore, during the process of heating the hub 200, the permanent magnet heating device of the present invention makes the temperature of various parts of the hub 200 more reasonable and the temperature distribution more uniform, improves energy utilization, avoids gas safety issues, and meets product quality requirements.
[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0049] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0050] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0051] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A permanent magnet heating device, characterized in that: include: The first permanent magnet assembly is in a closed ring shape; A second permanent magnet assembly is disposed within the first permanent magnet assembly and is in a closed ring shape; an accommodating cavity is formed between the outer wall of the second permanent magnet assembly and the inner wall of the first permanent magnet assembly; the accommodating cavity is used to accommodate the side wall of the cylindrical workpiece; a third permanent magnet assembly, disposed within the second permanent magnet assembly; The first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly are rotatable around an axis of the first permanent magnet assembly to heat the cylindrical workpiece.
2. The permanent magnet heating device according to claim 1, characterized in that: The first permanent magnet assembly comprises: There are multiple first permanent magnet rings stacked vertically. The second permanent magnet assembly comprises: The second permanent magnet rings are multiple and stacked in layers along the vertical direction; The third permanent magnet assembly comprises: The third permanent magnetic rings are multiple and arranged in layers from the outside to the inside.
3. The permanent magnet heating device according to claim 2, characterized in that: Each of the first permanent magnet rings comprises: There are multiple first N-pole permanent magnet blocks; There are a plurality of first S-pole permanent magnet blocks, which are alternately arranged with the plurality of first N-pole permanent magnet blocks along the circumference of the first permanent magnet ring; Each of the second permanent magnet rings comprises: There are multiple second N-pole permanent magnet blocks; There are multiple second S-pole permanent magnet blocks, which are alternately arranged along the circumference of the second permanent magnet ring with the multiple second N-pole permanent magnet blocks; Each of the third permanent magnet rings comprises: There are multiple third N-pole permanent magnet blocks; There are multiple third S-pole permanent magnet blocks, which are alternately arranged with the multiple third N-pole permanent magnet blocks along the circumference of the third permanent magnet ring.
4. The permanent magnet heating device according to any one of claims 1 to 3, characterized in that: Also includes: a first bearing seat; the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly are mounted on the first bearing seat; the first bearing seat is capable of rotating around its own axis to drive the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly to rotate; The first driver has an output shaft connected to the first bearing seat and is used to drive the first bearing seat to rotate.
5. The permanent magnet heating device according to any one of claims 1 to 3, characterized in that: Also includes: A first bearing seat is formed with a clearance hole in the middle; the first permanent magnet assembly and the second permanent magnet assembly are mounted on the first bearing seat; the first bearing seat is capable of rotating around its own axis to drive the first permanent magnet assembly and the second permanent magnet assembly; The second bearing seat is arranged in the said clearance hole; the third permanent magnet assembly is installed on the second bearing seat; the second bearing seat can move in the vertical direction and can rotate around its own axis to drive the third permanent magnet assembly.
6. The permanent magnet heating device according to any one of claims 1 to 3, characterized in that: Also includes: a clamping assembly, disposed above the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly, for clamping or releasing the cylindrical workpiece; the clamping assembly is capable of moving in a vertical direction to drive the cylindrical workpiece; The second driver has an output shaft connected to the clamping assembly and is used to drive the clamping assembly.
7. The permanent magnet heating device according to claim 6, characterized in that: Also includes: frame; The first permanent magnet assembly, the second permanent magnet assembly, the third permanent magnet assembly and the clamping assembly are installed on the frame; The control component is installed on the frame.
8. The permanent magnet heating device according to claim 7, characterized in that: The bottom of the frame is provided with embedded parts; The base is arranged below the frame and has the embedded parts embedded in it.
9. A method for using the permanent magnet heating device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. placing the side wall of the cylindrical workpiece in the accommodating cavity; S2. Rotate the first permanent magnet assembly, the second permanent magnet assembly, and the third permanent magnet assembly to heat the cylindrical workpiece.