Inner temperature electromagnetic induction heating and magnetic coupling driving circulation system of tire vulcanizing machine

Abstract

The application relates to the field of tire production equipment. A tire vulcanizing machine inner temperature electromagnetic induction heating and magnetic coupling driving circulation system is installed at the lower part of the center mechanism of the vulcanizing machine and comprises a cylinder head shell, a magnetic coupling driving assembly, an electromagnetic induction heating assembly, a fan blade and a temperature measuring protection system. A driving magnetic disc is arranged outside a capsule and is driven to rotate by a driving motor. A driven magnetic disc is arranged inside the capsule and is coupled with the driving magnetic disc through magnetic force and rotates synchronously with the driving magnetic disc. The driving magnetic disc and the driven magnetic disc are respectively provided with permanent magnets with opposite polarities, and magnetic coupling transmission is formed. The application adopts the magnetic coupling non-contact driving mode to realize the rotary driving of the fan blade in the capsule, completely eliminates the dynamic sealing leakage point, adopts the electromagnetic induction heating mode to directly heat the metal heating disc and nitrogen in the flow channel, realizes efficient heating, and significantly improves the nitrogen temperature uniformity in the capsule through the forced circulation of the fan blade.

Description

Technical Field

[0001] This invention relates to the field of tire production equipment, specifically to a tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system, which is mainly used for heating and forced circulation inside the tire bladder during the tire vulcanizing process. Background Technology

[0002] Tire vulcanization is a crucial step in tire manufacturing. Currently, the industry widely uses high-temperature steam or nitrogen vulcanization processes, which utilize high-temperature, high-pressure steam or nitrogen to heat the inside of the tire blank through a vulcanizing bladder. However, existing steam or nitrogen vulcanization technologies have the following drawbacks: First, the natural convection circulation of steam or nitrogen within the bladder leads to an uneven temperature field inside the bladder, resulting in a temperature difference between the tire sidewall and shoulder areas, which severely affects the consistency of tire vulcanization quality. In a high-density gas environment, natural convection is extremely ineffective.

[0003] Secondly, existing steam or nitrogen circulation systems typically require a separate circulating fan installed outside the cylinder head, with the internal fan blades driven by a rotating shaft passing through the cylinder head casing. This rotating shaft presents a dynamic sealing challenge. After prolonged operation of the vulcanizing machine, wear on the dynamic seals leads to nitrogen leakage, resulting not only in nitrogen waste but also increased maintenance costs.

[0004] Third, existing heating methods mostly use external heaters to heat the material and then transport it to the vulcanizing machine capsule through pipelines. Heat loss is severe during long-distance transportation, resulting in low energy utilization and slow heating response.

[0005] Fourth, existing technologies lack effective means to control the uniformity of nitrogen temperature inside the capsule, making it difficult to guarantee the consistency of tire vulcanization quality.

[0006] Therefore, there is an urgent need for a nitrogen heating and circulation system for vulcanizing machines that can achieve forced circulation of nitrogen inside the capsule, prevent leakage from dynamic seals, achieve high heating efficiency, and provide uniform temperature. Summary of the Invention

[0007] The purpose of this invention is to address the problems of uneven nitrogen temperature, sealing difficulties, and low heating efficiency in existing tire vulcanizing cylinder heads by proposing an internal temperature electromagnetic induction heating and magnetic coupling drive circulation system for tire vulcanizing machines.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an internal temperature electromagnetic induction heating and magnetic coupling drive circulation system for a tire vulcanizing machine, installed in the lower part of the central mechanism of the vulcanizing machine, the system including a cylinder head shell, a magnetic coupling drive assembly, an electromagnetic induction heating assembly, fan blades and a temperature measurement and protection system; The cylinder head outer shell is a pressure-bearing shell, which is fixedly installed on the capsule clamping plate and does not move up and down with the center rod; The magnetic coupling drive assembly includes a drive motor, an active magnetic disk, and a driven magnetic disk. The active magnetic disk is located outside the capsule and is driven to rotate by the drive motor. The driven magnetic disk is located inside the capsule and is magnetically coupled to the active magnetic disk, rotating synchronously with the active magnetic disk. The active magnetic disk and the driven magnetic disk are respectively provided with permanent magnets of opposite polarities to form a magnetic coupling transmission. The capsule clamp is positioned between the active magnetic disk and the driven magnetic disk to isolate the inside and outside environment of the capsule and to fix the capsule. The capsule clamp is made of a non-magnetic material, allowing magnetic fields to penetrate. The electromagnetic induction heating assembly includes a spiral heating coil and a metal heating plate. A high-frequency current is passed through the spiral heating coil to generate a high-frequency magnetic field, which induces eddy currents in the metal heating plate to generate heat, and then transfers the heat to the medium in the guide groove. The fan blades are fixedly connected to the driven magnetic disk and rotate synchronously with the driven magnetic disk to force the medium inside the capsule to circulate. The temperature protection system includes a temperature sensor located inside the cylinder head housing, used to monitor the medium temperature and feed it back to the control system.

[0009] The technical solution for achieving the objective of this invention further includes: an electromagnetic induction heating cylinder head fixed inside the cylinder head shell; the cylinder head having an upper and lower stacked structure fixed within the cavity of the cylinder head shell; and a magnetic coupling drive assembly, a fan blade, and an electromagnetic induction heating assembly coaxially arranged from bottom to top. The magnetic coupling drive assembly is located at the bottom of the cylinder head shell. The drive assembly includes a drive motor, an active magnetic disk, a first permanent magnet, a stator, a rotor, and a bearing. The rotor is connected and fixed to the active magnetic disk. The first permanent magnet is evenly distributed circumferentially on the active magnetic disk and is arranged alternately with the north and south poles. The capsule clamp is horizontally positioned between the active magnetic disk and the driven magnetic disk to fix the capsule and separate the magnetic drive system and the heating system. The driven magnetic disk is positioned above the capsule clamping disk, and is vertically opposite to the active magnetic disk. The driven magnetic disk is circumferentially evenly distributed with second permanent magnets, which are arranged alternately with north and south poles, and have opposite polarities, equal numbers, and corresponding positions to the first permanent magnets. A magnetic levitation bearing assembly is provided between the driven magnetic disk and the central sleeve of the cylinder head shell to reduce friction and maintain axial positioning. The fan blades are fixedly connected to the lower end of the driven magnetic disk and rotate synchronously with the driven magnetic disk to force the medium inside the capsule to circulate. The electromagnetic induction heating component is located in the upper part of the cylinder head shell. The spiral heating coil is wound in the coil groove of the metal heating plate. After a high-frequency current is passed through, a high-frequency magnetic field is generated, which induces eddy currents in the metal heating plate and causes it to heat up. After the metal heating plate heats up, the heat is transferred to the medium flowing through it. The metal heating plate is provided with a spiral guide groove to increase the heat exchange area. The fan blades drive the medium to flow upwards, absorb heat on the surface of the metal heating plate, and then return from the top to the bottom of the capsule, forming a circulating heating loop. The temperature protection system includes a temperature sensor, which is located on the cylinder head shell at the center of the metal heating plate, and is used to monitor the temperature of the medium and feed it back to the control system.

[0010] Furthermore, an electromagnetic induction heating cylinder head is fixed inside the cylinder head shell. The cylinder head is a magnetic levitation support structure. A magnetic levitation bearing assembly is provided between the driven magnetic disk and the central sleeve of the cylinder head shell to support the levitation and rotation of the driven magnetic disk and reduce mechanical friction. The magnetic levitation bearing assembly includes a support coil and a support permanent magnet disposed on the cylinder head housing. When the support coil is energized, it generates a repulsive force with the support permanent magnet, causing the driven magnetic disk to levitate. The magnetic levitation bearing assembly also includes a magnetic field sensor and a control system for real-time monitoring of the levitation height of the driven magnetic disk and adjusting the current in the support coil to maintain stable levitation.

[0011] The beneficial effects of this invention include: 1. This invention adopts a magnetic coupling non-contact driving method, with the drive motor located outside the capsule. There is no rotating shaft inside the capsule passing through the capsule wall, which completely eliminates dynamic seal leakage points, ensuring high sealing reliability and minimizing nitrogen loss.

[0012] 2. This invention uses electromagnetic induction heating, which has high heating efficiency, fast response speed, and can accurately control the nitrogen temperature.

[0013] 3. This invention uses fan-blade forced circulation, which significantly improves the uniformity of nitrogen temperature inside the capsule, reducing the temperature difference between the top and bottom of the capsule to within ±1.5℃, effectively improving the quality of tire vulcanization.

[0014] 4. This invention provides a variety of structural solutions, such as stacked layers and magnetic levitation support, to offer diverse options for different spatial layouts and process requirements.

[0015] 5. The drive motor of this invention adopts a common custom industrial motor, which does not require high temperature resistance design, and has low cost and high reliability.

[0016] 6. The capsule of this invention has no other electrical connections except for the electromagnetic coil, and only contains a permanent magnet and a fan blade, which can operate stably for a long time in high-temperature environments above 200°C.

[0017] 7. The magnetic coupling transmission of the present invention has an overload protection function. When the load exceeds the rated torque, the inner and outer magnetic disks will slip off, protecting the drive motor from damage.

[0018] 8. The magnetic coupling transmission of this invention allows for a larger installation alignment error, which greatly simplifies the installation and debugging process. Attached Figure Description

[0019] Figure 1 This is a longitudinal sectional view of an embodiment of the present invention (upper and lower stacked structure); Figure 2 This is a schematic diagram of the cylinder head shell structure according to an embodiment of the present invention; Figure 3 This is a partial schematic diagram of the structure of the magnetic coupling drive component of the present invention; Figure 4 This is a schematic diagram of the structure of the electromagnetic induction heating component (metal heating plate) of the present invention; In the diagram: 100-Cylinder head shell, 200-Drive motor, 201-Active magnetic disk, 202-Driven magnetic disk, 203-First permanent magnet, 204-Second permanent magnet, 205-Stator, 206-Rotor, 207-Bearing, 300-Capsule clamping plate, 400-Fan blade, 500-Electromagnetic induction heating assembly, 501-Spiral heating coil, 502-Metal heating plate, 503-Guide groove, 600-Capsule, 800-Temperature sensor, 900-Magnetic shielding cover, 110-Magnetic levitation bearing assembly, 111-Supporting coil, 112-Supporting permanent magnet. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, an electromagnetic induction heating and magnetic coupling drive circulation system for a tire vulcanizing machine is installed in the lower part of the central mechanism of the vulcanizing machine. The system includes a cylinder head shell 100, a magnetic coupling drive assembly, an electromagnetic induction heating assembly 500, a fan blade 400, and a temperature measurement and protection system. The cylinder head outer shell 100 is a pressure-bearing shell made of 42CrMo alloy steel or QT600-3 ductile iron, and is fixedly installed on the capsule clamp 300, and does not move up and down with the center rod. The magnetic coupling drive assembly includes a drive motor 200, an active magnetic disk 201, and a driven magnetic disk 202. The active magnetic disk 201 is disposed outside the capsule 600 and is driven to rotate by the drive motor 200. The driven magnetic disk 202 is disposed inside the capsule 600 and is magnetically coupled to the active magnetic disk 201, rotating synchronously with the active magnetic disk 201. The active magnetic disk 201 and the driven magnetic disk 202 are respectively provided with permanent magnets of opposite polarities, forming a magnetic coupling transmission. The capsule clamping plate 300 is disposed between the active magnetic disk 201 and the driven magnetic disk 202 to isolate the inside and outside environment of the capsule 600 and to fix the capsule 600. The capsule clamping plate 300 is made of non-magnetic material, allowing magnetic fields to penetrate. The electromagnetic induction heating assembly 500 includes a spiral heating coil 501 and a metal heating plate 502. A high-frequency current is passed through the spiral heating coil 501 to generate a high-frequency magnetic field, which induces eddy currents in the metal heating plate 502 to generate heat, and transfers the heat to the medium (usually nitrogen) in the guide groove 503. The fan blade 400 is fixedly connected to the driven magnetic disk 202 and rotates synchronously with the driven magnetic disk 202 to force the medium inside the capsule 600 to circulate. The temperature protection system includes a temperature sensor 800, which is located inside the cylinder head housing 100 and is used to monitor the medium temperature and feed it back to the control system.

[0022] The magnetic coupling transmission technology described in this invention utilizes the principle of attraction between opposite magnets and repulsion between like magnets to achieve non-contact torque transmission through the magnetic force between permanent magnets. For example... Figure 3 As shown, a first permanent magnet 203 and a second permanent magnet 204 with opposite polarities are respectively installed on the active magnetic disk 201 and the driven magnetic disk 202. When the drive motor 200 is powered on, the rotor 206 drives the active magnetic disk 201 to rotate. The first permanent magnet 203 on the active magnetic disk 201 generates a rotating magnetic field. This magnetic field penetrates the capsule clamp 300 and acts on the second permanent magnet 204 on the driven magnetic disk 202. Due to the attraction between opposite magnetic poles, the driven magnetic disk 202 rotates synchronously with the active magnetic disk 201, thereby realizing non-contact power transmission from the outside to the inside.

[0023] This invention proposes an electromagnetic induction heating and magnetic coupling drive circulation system for a tire vulcanizing machine. It uses a magnetic coupling non-contact drive method to drive the rotation of the fan blades inside the capsule, completely eliminating dynamic seal leakage points. It uses electromagnetic induction heating to directly heat the metal heating plate and nitrogen in the flow channel, achieving efficient heating. Through forced circulation by the fan blades, it significantly improves the temperature uniformity of nitrogen inside the capsule.

[0024] The active magnetic disk 201 includes an active disk body and first permanent magnets 203 evenly distributed circumferentially on the active disk body, the first permanent magnets 203 being arranged alternately in N / S polarity; the driven magnetic disk 202 includes a driven disk body and second permanent magnets 204 evenly distributed circumferentially on the driven disk body, the second permanent magnets 204 being arranged alternately in N / S polarity and having opposite polarity to the first permanent magnets 203; the number of the first permanent magnets 203 and the second permanent magnets 204 are equal and their positions correspond, forming a one-to-one magnetic coupling relationship.

[0025] An air gap is provided between the active magnetic disk 201 and the driven magnetic disk 202. Magnetic lines of force pass through the air gap to form a closed magnetic circuit. The torque transmission capability of the magnetic coupling drive is related to factors such as the magnetic energy product of the permanent magnet, the length of the air gap, and the number of magnetic pole pairs. By reasonably designing these parameters, the power transmission requirements can be met.

[0026] The drive motor 200 is a common industrial motor and is located outside the capsule 600. The active magnetic disk 201 is connected and fixed to the rotor of the drive motor 200 by a key or other means. The drive motor 200 consists of a stator 205 and a rotor 206. The stator 205 is fixed to the central sleeve of the cylinder head housing 100, and the rotor 206 is also fixed to the central sleeve by bearings on its upper and lower edges and does not move with the up and down movement of the central rod.

[0027] A magnetic levitation bearing assembly 110 is provided between the driven magnetic disk 202 and the central sleeve of the cylinder head housing 100 to support the levitation rotation of the driven magnetic disk 202, reduce friction and maintain axial positioning.

[0028] like Figure 1 As shown, as a first embodiment of the present invention, the present invention provides a tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system, wherein the cylinder head in the system adopts an upper and lower stacked structure.

[0029] The cylinder head outer shell 100 is a pressure-bearing shell, such as Figure 2 It is fixedly installed on the bladder clamping plate 300 of the vulcanizing machine. An electromagnetic induction heating cylinder head is fixed inside the cylinder head shell 100. The cylinder head is a stacked structure fixed in the cavity of the cylinder head shell 100. From bottom to top, a magnetic coupling drive assembly, a fan blade 400 and an electromagnetic induction heating assembly 500 are coaxially arranged.

[0030] The magnetic coupling drive assembly is located at the bottom of the cylinder head housing 100. The drive assembly includes a drive motor 200, an active magnetic disk 201, a first permanent magnet 203, a stator 205, a rotor 206, and a bearing 207. The rotor 206 is connected and fixed to the active magnetic disk 201 by a key or other means. The active magnetic disk 201 has the first permanent magnet 203 evenly distributed circumferentially, arranged alternately in a north / south pole (N / S) configuration.

[0031] The capsule clamp 300 is horizontally positioned between the active magnetic disk 201 and the driven magnetic disk 202 to fix the capsule 600 and separate the magnetic drive system from the heating system. The capsule clamp 300 is made of a non-magnetic metal material, such as 316L stainless steel, or a non-metallic material, such as PEEK, and can withstand the high pressure of 2.1-2.8 MPa inside the capsule while allowing magnetic fields to penetrate.

[0032] The driven magnetic disk 202 is positioned above the capsule clamp 300, vertically opposite the active magnetic disk 201. Second permanent magnets 204 are evenly distributed circumferentially on the driven magnetic disk 202, arranged alternately with north and south poles (N / S), and are opposite in polarity to, equal in number to, and corresponding in position to, the first permanent magnets 203. A bearing assembly 110 is provided between the driven magnetic disk 202 and the central sleeve of the cylinder head housing 100 to reduce friction and maintain axial positioning.

[0033] The fan blade 400 is fixedly connected to the lower end of the driven magnetic disk 202 and rotates synchronously with the driven magnetic disk 202. The fan blade 400 is made of a high-temperature resistant non-magnetic material (such as PEEK or titanium alloy) and is used to force the medium inside the capsule 600 to circulate.

[0034] The electromagnetic induction heating component 500 is located in the upper part of the cylinder head shell 100. The spiral heating coil 501 adopts a spiral winding structure, is made of high-temperature resistant wire, and is laid in the coil groove opened on the surface of the metal heating plate (502). After a high-frequency current is passed through it, a high-frequency magnetic field is generated. The metal heating plate (502) is made of a magnetically conductive metal material, such as 42CrMo alloy steel or cast iron. Under the action of the high-frequency magnetic field of the spiral heating coil 501, eddy current heating is generated, and the heat is transferred to the medium flowing through it. The inner wall of the metal heating plate 502 is also provided with axial flow guide grooves 503, such as... Figure 4 This increases the heat exchange area, allowing the medium to preferentially flow through the inner wall of the metal heating plate 502 to absorb heat.

[0035] The fan blades 400 drive the medium to flow upwards, absorb heat on the surface of the metal heating plate 502, and then return from the top to the bottom of the capsule 600, forming a circulating heating loop. Figure 1 The middle arrow points to the medium flow path diagram.

[0036] The temperature protection system includes a temperature sensor 800, which is installed on the cylinder head housing 100 at the center of the metal heating plate 502, and is used to monitor the medium temperature and feed it back to the control system.

[0037] like Figure 3 As shown, as a second embodiment of the present invention, the present invention provides a tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system, wherein the cylinder head in the system adopts a magnetic levitation support structure.

[0038] Based on the above embodiment one, this embodiment uses a magnetic levitation bearing assembly 110 instead of a traditional mechanical bearing assembly. An electromagnetic induction heated cylinder head is fixed inside the cylinder head shell (100). The cylinder head is a magnetic levitation support structure. A magnetic levitation bearing assembly 110 is provided between the driven magnetic disk 202 and the central sleeve of the cylinder head shell 100 to support the levitation and rotation of the driven magnetic disk 202 and reduce mechanical friction. The magnetic levitation bearing assembly 110 includes a support coil 111 and a support permanent magnet 112 disposed on the cylinder head housing 100. When the support coil 111 is energized, it generates a repulsive force with the support permanent magnet 112, causing the driven magnetic disk 202 to levitate. The magnetic levitation bearing assembly 110 also includes a magnetic field sensor and a control system for real-time monitoring of the levitation height of the driven magnetic disk 202 and adjusting the current in the support coil 111 to maintain stable levitation. This embodiment uses a magnetic levitation support structure to eliminate mechanical friction, extend the service life of the equipment, and reduce maintenance requirements.

[0039] The control system is electrically connected to the power supply and temperature sensor 800 of the drive motor 200, the spiral heating coil 501, and is used to independently control the nitrogen circulation speed and heating temperature. The control strategy of the control system includes: According to the requirements of the vulcanization process, the speed of the drive motor and the power of the spiral heating coil are independently controlled to achieve independent adjustment of the nitrogen circulation speed and heating temperature. When the temperature sensor detects that the nitrogen temperature has reached the set value, the control system reduces the power of the spiral heating coil or cuts off the power supply. When the temperature exceeds the safety threshold, the control system issues an alarm signal and performs a protective shutdown.

[0040] The beneficial effects of this invention have been verified in experiments: compared with the cylinder head of a traditional vulcanizing machine, the system of this invention reduces the temperature difference between the upper and lower parts of the medium (usually nitrogen) inside the bladder to within ±1.5℃, reduces the nitrogen leakage rate to almost zero, increases the heating efficiency by more than 30%, and significantly improves the consistency of tire vulcanization quality.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system, installed in the lower part of the central mechanism of the vulcanizing machine, characterized in that, The system includes a cylinder head housing (100), a magnetic coupling drive assembly, an electromagnetic induction heating assembly (500), fan blades (400), and a temperature measurement and protection system; The cylinder head shell (100) is a pressure-bearing shell, which is fixedly installed on the capsule clamp (300) and does not move up and down with the central rod; The magnetic coupling drive assembly includes a drive motor (200), an active magnetic disk (201), and a driven magnetic disk (202). The active magnetic disk (201) is located outside the capsule (600) and is driven to rotate by the drive motor (200). The driven magnetic disk (202) is located inside the capsule (600) and is magnetically coupled to the active magnetic disk (201), rotating synchronously with the active magnetic disk (201). The active magnetic disk (201) and the driven magnetic disk (202) are respectively provided with permanent magnets of opposite polarities to form a magnetic coupling transmission. The capsule clamp (300) is disposed between the active magnetic disk (201) and the driven magnetic disk (202) to isolate the inside and outside environment of the capsule (600) and to fix the capsule (600). The capsule clamp (300) is made of non-magnetic material to allow magnetic fields to penetrate. The electromagnetic induction heating assembly (500) includes a spiral heating coil (501) and a metal heating plate (502). The spiral heating coil (501) is supplied with a high-frequency current to generate a high-frequency magnetic field, which induces eddy currents in the metal heating plate (502) to generate heat and transfers the heat to the medium in the guide groove (503). The fan blade (400) is fixedly connected to the driven magnetic disk (202) and rotates synchronously with the driven magnetic disk (202) to force the medium inside the capsule (600) to circulate. The temperature protection system includes a temperature sensor (800), which is located inside the cylinder head housing (100) and is used to monitor the medium temperature and feed it back to the control system.

2. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 1, characterized in that, The active magnetic disk (201) includes an active disk body and a first permanent magnet (203) evenly distributed around the active disk body. The first permanent magnet (203) is arranged alternately with the north and south poles. The driven magnetic disk (202) includes a driven disk body and a second permanent magnet (204) evenly distributed around the driven disk body. The second permanent magnet (204) is arranged alternately with the north and south poles and has the opposite polarity to the first permanent magnet (203). The number of the first permanent magnet (203) and the second permanent magnet (204) are equal and their positions correspond to each other, forming a one-to-one magnetic coupling relationship.

3. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 1, characterized in that, The drive motor (200) is a common industrial motor and is located outside the capsule (600); the active magnetic disk (201) is fixed on the rotor of the drive motor (200).

4. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 3, characterized in that, The drive motor (200) consists of a stator (205) and a rotor (206). The stator (205) is fixed on the central sleeve of the cylinder head housing (100). The rotor (206) is also fixed on the central sleeve by bearings on the upper and lower edges and does not move with the up and down movement of the central rod.

5. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 1, characterized in that, An electromagnetic induction heating cylinder head is fixed inside the cylinder head shell (100). The cylinder head is a stacked structure fixed in the cavity of the cylinder head shell (100). From bottom to top, a magnetic coupling drive assembly, a fan blade (400) and an electromagnetic induction heating assembly (500) are coaxially arranged. The magnetic coupling drive assembly is located at the bottom of the cylinder head shell (100). The drive assembly includes a drive motor (200), an active magnetic disk (201), a first permanent magnet (203), a stator (205), a rotor (206), and a bearing (207). The rotor (206) is connected and fixed to the active magnetic disk (201). The first permanent magnet (203) is evenly distributed circumferentially on the active magnetic disk (201) and arranged alternately with the north and south poles. The capsule clamp (300) is horizontally positioned between the active magnetic disk (201) and the driven magnetic disk (202) to fix the capsule (600) and separate the magnetic drive system and the heating system; The driven magnetic disk (202) is positioned above the capsule clamp (300) and is vertically opposite to the active magnetic disk (201). The driven magnetic disk (202) is circumferentially evenly distributed with second permanent magnets (204), which are arranged alternately with north and south poles and have opposite polarities, equal numbers, and corresponding positions to the first permanent magnets (203). A magnetic levitation bearing assembly (110) is provided between the driven magnetic disk (202) and the central sleeve of the cylinder head housing (100) to reduce friction and maintain axial positioning. The fan blade (400) is fixedly connected to the lower end of the driven magnetic disk (202) and rotates synchronously with the driven magnetic disk (202) to force the medium inside the capsule (600) to circulate. The electromagnetic induction heating component (500) is located in the upper part of the cylinder head shell (100). The spiral heating coil (501) is wound in the coil groove of the metal heating plate (502). After a high-frequency current is passed through, a high-frequency magnetic field is generated, which induces eddy currents in the metal heating plate (502) to make it heat up. After the metal heating plate (502) heats up, the heat is transferred to the medium flowing through it. The metal heating plate (502) is provided with a spiral guide groove (503) to increase the heat exchange area. The fan blades (400) drive the medium to flow upwards, absorb heat on the surface of the metal heating plate (502), and then return from the top to the bottom of the capsule (600), forming a circulating heating circuit. The temperature protection system includes a temperature sensor (800), which is located on the cylinder head housing (100) at the center of the metal heating plate (502) to monitor the medium temperature and feed it back to the control system.

6. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 5, characterized in that, The spiral heating coil (501) adopts a spiral winding structure and is made of high temperature resistant wire. It is laid in the coil groove opened on the surface of the metal heating plate (502). After a high frequency current is passed through it, a high frequency magnetic field is generated. The metal heating plate (502) is made of magnetic metal material. Under the action of the high frequency magnetic field of the spiral heating coil (501), eddy current heating is generated. After heating, the heat is transferred to the medium flowing through it. The inner wall of the metal heating plate (502) is also provided with axial flow guide grooves (503).

7. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 1, characterized in that, An electromagnetic induction heating cylinder head is fixed inside the cylinder head shell (100). The cylinder head is a magnetic levitation support structure. A magnetic levitation bearing assembly (110) is provided between the driven magnetic disk (202) and the central sleeve of the cylinder head shell (100) to support the driven magnetic disk (202) to levitate and rotate, reduce mechanical friction and maintain axial positioning. The magnetic levitation bearing assembly (110) includes a support coil (111) and a support permanent magnet (112) disposed on the cylinder head housing (100). When the support coil (111) is energized, it generates a repulsive force with the support permanent magnet (112), causing the driven magnetic disk (202) to levitate. The magnetic levitation bearing assembly (110) also includes a magnetic field sensor and a control system for real-time monitoring of the levitation height of the driven magnetic disk (202) and adjusting the current in the support coil (111) to maintain stable levitation.

8. The tire vulcanizing machine internal temperature electromagnetic induction heating and magnetic coupling drive circulation system according to claim 1 or 5, characterized in that, The control system is electrically connected to the power supply and temperature sensor (800) of the drive motor (200), the spiral heating coil (501), and the nitrogen circulation speed and heating temperature independently.

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