Heating device and control method thereof

Abstract

The present invention relates to the field of permanent magnet induction heating technology, and in particular to a heating device and a control method thereof, wherein the heating device comprises: a feeding mechanism, a heating mechanism and a control unit; the feeding mechanism is used to receive and place a workpiece to be processed to a heating position; the heating mechanism comprises a plurality of heating elements, and the plurality of heating elements are arranged circumferentially; the control unit is electrically connected to the heating mechanism; the control unit is used to control the plurality of heating elements to enclose and form a closed structure to heat the workpiece to be processed when the workpiece to be processed is located at the heating position. In the heating device, the heating mechanism is a permanent magnet device, and the heating element is a permanent magnet block, which can solve the problem that the processing quality of the workpiece to be processed is affected by improper temperature control. A plurality of permanent magnet blocks are enclosed to form a closed structure, and the closed structure rotates to heat the workpiece to be processed. The workpiece to be processed remains stationary under the fixation of the feeding mechanism, which can ensure the uniformity and efficiency of the heating device in heating the workpiece to be processed.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet induction heating, and in particular to a heating device and a control method. Background Art

[0002] In the processing scenarios of workpieces to be processed, such as wheel hubs, permanent magnet induction heating devices are usually installed on processing machinery. Although permanent magnet induction heating devices can heat efficiently, they require high precision in controlling the heating temperature. Improper temperature control may lead to insufficient or excessive heating, affecting the processing quality of the wheel hub.

[0003] Therefore, the current heating device has the problem of affecting the processing quality of the workpiece due to improper temperature control. Summary of the invention

[0004] The present invention provides a heating device and a control method thereof, which are used to solve the problem that the processing quality of a workpiece to be processed is affected by improper temperature control of the current heating device.

[0005] In one aspect, the present invention provides a heating device, comprising:

[0006] A feeding mechanism, used for receiving and placing the workpiece to be processed to a heating position;

[0007] The heating mechanism comprises a plurality of heating elements, wherein the plurality of heating elements are arranged circumferentially;

[0008] A control unit is electrically connected to the heating mechanism; wherein,

[0009] The control unit is used to control multiple heating elements to enclose and form a closed structure to heat the workpiece to be processed when the workpiece to be processed is located at the heating position; by setting the heating mechanism as a permanent magnetic device, setting the heating element as a permanent magnetic block, and using multiple permanent magnetic blocks to enclose and form a closed structure, the workpiece to be processed is heated by rotating the closed structure. During the heating process, the workpiece to be processed is ultimately kept stationary by the permanent magnetic force generated by the permanent magnetic block and the workpiece to be processed being fixed by the feeding mechanism, thereby ensuring the uniformity of the permanent magnetic device heating the workpiece to be processed.

[0010] In some of the embodiments, the control unit is also used to obtain the temperature of the workpiece to be processed when heating the workpiece, and to control the heating mechanism to stop heating and the heating mechanism, i.e., the permanent magnet device, to stop rotating after the workpiece to be processed reaches the target heating temperature.

[0011] In some embodiments, the heating mechanism further comprises:

[0012] A driving member is arranged on a side of the plurality of heating members away from the feeding mechanism;

[0013] The control unit is connected to the driving member and is used to control the driving member to drive the plurality of heating members to rotate after forming a closed structure.

[0014] In some embodiments, the driving member includes:

[0015] A rotating table is arranged on a side of the plurality of heating elements away from the feeding mechanism and is used to carry the plurality of heating elements;

[0016] The first motor is connected to the rotating platform and is used to drive the closed structure to rotate.

[0017] In some embodiments, the first motor is used to drive the rotating table to drive the multiple heating elements to perform eccentric oscillating and swinging motion.

[0018] In some embodiments, the feeding mechanism comprises:

[0019] The material feeding member is arranged on the same side of the plurality of heating members along the longitudinal extension; wherein,

[0020] The control unit is connected to the material feeding piece and is used for controlling the material feeding piece to clamp the workpiece to be processed.

[0021] In some embodiments, the feeding mechanism comprises:

[0022] The release aid is arranged on the inner surfaces of the plurality of heating elements facing each other. The release aid is one of an elastic sheet or a spring so as to separate the workpiece from the plurality of heating elements after heating is completed.

[0023] In some embodiments, the feeding mechanism further comprises:

[0024] The pusher is connected to the control unit, and the control unit is used to control the pusher to push the workpiece to be processed toward the directions of the multiple heating elements.

[0025] In some of the embodiments, before the workpiece is heated, the workpiece is used to pass through multiple heating elements and move toward the center of the area of ​​the heating mechanism; after the workpiece is heated, the workpiece is used to pass through multiple heating elements and move toward one end away from the center of the area, and the feeding mechanism is used to move the workpiece out of the heating position.

[0026] In some of the embodiments, before the workpiece to be processed enters the heating position, a plurality of heating elements are enclosed to form a closed structure.

[0027] On the other hand, the present invention also provides a method for controlling the heating device as described above, comprising the steps of:

[0028] The workpiece to be processed is arranged at a heating position until the workpiece to be processed reaches the center of the area of ​​the heating mechanism, and multiple heating elements are enclosed to form a closed structure to heat the workpiece to be processed.

[0029] In some embodiments, the step of heating the workpiece to be processed further includes:

[0030] The temperature of the workpiece to be processed is obtained, and when the workpiece to be processed reaches the target heating temperature, the heating mechanism stops rotating.

[0031] In some of the embodiments, before the workpiece is heated, the workpiece moves through a plurality of heating elements toward one end of the center of the region;

[0032] After the workpiece is heated, it passes through a plurality of heating elements and moves toward one end away from the center of the area, and the feeding mechanism moves the workpiece out of the heating position.

[0033] The beneficial effects of the present invention are as follows: the heating device of the present invention includes a feeding mechanism, a heating mechanism and a control unit; the feeding mechanism is used to receive and place the workpiece to be processed to the heating position; the heating mechanism includes a plurality of heating elements, and the plurality of heating elements are arranged circumferentially; the control unit is electrically connected to the heating mechanism; the control unit is used to control the plurality of heating elements to enclose and form a closed structure to heat the workpiece to be processed when the workpiece to be processed is located at the heating position. The heating device can solve the problem that the processing quality of the workpiece to be processed is affected by improper temperature control. The heating element is clamped and fixed by the feeding mechanism, and the closed structure rotates relative to the workpiece to be processed to heat the workpiece to be processed, which can ensure the uniformity and efficiency of the heating device heating the workpiece to be processed. Therefore, the heating device can solve the problem that the processing quality of the workpiece to be processed is affected by improper temperature control of the current heating device.

[0034] In the control method of the heating device of the present invention, the workpiece to be processed is arranged at the heating position until the workpiece to be processed reaches the center of the area of ​​the heating mechanism, and multiple heating elements are enclosed to form a closed structure, and the closed structure rotates around the workpiece to be processed to heat the workpiece to be processed; by arranging the workpiece to be processed at the center of the area of ​​multiple heating elements, and the multiple heating elements are closed to form a closed structure, the closed structure is rotated to uniformly heat the workpiece to be processed. During the heating process, the workpiece to be processed remains stationary under the fixation of the feeding mechanism, thereby ensuring the uniformity and efficiency of the heating of the workpiece to be processed by the heating device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a three-dimensional schematic diagram of a heating device in an embodiment of the present invention;

[0036] Figure 2 yes Figure 1 A side view of a heating device;

[0037] Figure 3 yes Figure 1 A top view of a heating device;

[0038] Figure 4 yes Figure 1 A bottom view of a heating device;

[0039] Figure 5 yes Figure 1 A front view of a heating device;

[0040] Figure 6 yes Figure 1 Rear view of the heating device.

[0041] In the figure: 1, workpiece to be processed; 100, feeding mechanism; 110, feeding member; 200, heating mechanism; 210, heating member; 220, driving member; 221, rotating table; 222, first motor; 223, conveyor belt; 300, control unit. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The applicant has noticed that in the field of metal heat processing, with the continuous development of the manufacturing industry, the application of permanent magnet induction heating devices and control methods has become increasingly widespread. This technology utilizes the characteristics of permanent magnet materials and achieves efficient and precise heating of the wheel hub by precisely controlling the magnetic field. In recent years, with the advancement of new materials and electromagnetic control technology, the performance of the annular permanent magnet device has been significantly improved, and its magnetic field strength and stability are higher, which has brought revolutionary changes to the metal heating industry. However, the rapid development of technology has also brought new challenges and demands.

[0044] In the wheel hub processing scenario, permanent magnetic induction heating devices are usually installed on processing machinery to generate a strong magnetic field to act on the wheel hub to be processed. In terms of control methods, modern permanent magnetic devices usually use intelligent control systems that can adjust the magnetic field strength and distribution in real time according to processing requirements to meet the processing requirements of wheels of different specifications. In addition, these control systems also have fault self-diagnosis and early warning functions, which can detect and solve potential problems in a timely manner to ensure the smooth progress of the processing process.

[0045] Although permanent magnet induction devices and their control methods have shown significant advantages in wheel hub heating, there are still some technical pain points, including the accuracy of temperature control. Although permanent magnet induction heating can achieve efficient heating, the accuracy of controlling the heating temperature is high. Improper temperature control may lead to insufficient or excessive heating, affecting the processing quality of the wheel hub. In addition, as the demand for different types of wheel hubs increases, permanent magnet induction heating devices need to have better adaptability.

[0046] As the background technology, how to accurately control the temperature of the workpiece during the processing to avoid affecting the processing quality of the workpiece, and how to adapt to the processing of workpieces of different shapes, sizes and materials, such as wheel hub processing, are technical problems that technical personnel in this field urgently need to solve.

[0047] To solve the above problems, refer to Figure 1 to Figure 6 The present invention provides a heating device, in particular, a permanent magnetic induction heating device, comprising: a feeding mechanism 100, a heating mechanism 200 and a control unit 300. The feeding mechanism 100 is used to receive and place the workpiece 1 to be processed to the heating position. The heating mechanism 200 includes a plurality of heating elements 210, and the plurality of heating elements 210 are distributed circumferentially. The control unit 300 is electrically connected to the heating mechanism 200. The control unit 300 is used to control the plurality of heating elements 210 to enclose and form a closed structure when the workpiece 1 to be processed is configured at the heating position, the feeding mechanism 100 is used to clamp the workpiece 1 to be processed, and the closed structure is used to heat the workpiece 1 to be processed. In the embodiment provided by the present invention, the heating mechanism 200 is a permanent magnetic device; the heating element 210 is a magnetic petal or a permanent magnetic block; the heating mechanism 200 is further a circular permanent magnetic device, that is, the permanent magnetic device is designed in a circular ring shape and includes a plurality of separable magnetic petals; the workpiece 1 to be processed is a wheel hub to be processed.

[0048] In the heating device provided by the present invention, a feeding mechanism 100, a heating mechanism 200 and a control unit 300 are provided. The feeding mechanism 100 can receive and place the workpiece 1 to be processed to the heating position to realize the incoming material reception of the workpiece 1 to be processed. The feeding mechanism 100 can also accurately fix the workpiece 1 to be processed, i.e., the hub, at the heating position. The workpiece 1 to be processed, such as the hub, can be transported to the feeding mechanism 100 by means such as a conveyor belt, a manipulator, etc. The heating mechanism 200 includes a plurality of heating elements 210 separated from each other, and the plurality of heating elements 210 can be close to each other to enclose and form a closed structure. The closed structure can be formed by enclosing a plurality of heating elements 210, and the closed structure can be rotated relative to the workpiece 1 to heat the workpiece 1 to be processed. The control unit 300 is electrically connected to the heating mechanism 200. The control unit 300 is used to control the plurality of heating elements 210 to enclose and form a closed structure when the workpiece 1 to be processed is configured at the heating position and is located at the center of the area A, and to control the closed structure to rotate to heat the workpiece 1 to be processed, so as to ensure the uniformity and efficiency of the heating device heating the workpiece 1 to be processed.

[0049] In addition, it should be noted that the multiple heating elements 210 can also deviate from each other to enclose an avoidance channel, which is used to allow the workpiece 1 to pass through the multiple heating elements 210 and move toward one end of the area center A before the multiple heating elements 210 are enclosed into a closed structure, so that the workpiece 1 to be processed can enter the area center A between the multiple heating elements 210.

[0050] Before the workpiece 1, i.e., the wheel hub, is delivered, the magnetic petals are in a closed state and form a closed structure of a complete circular ring. When the workpiece 1, i.e., the wheel hub, is placed in the heating position, the magnetic petals will separate so that the workpiece 1, i.e., the wheel hub, can smoothly enter the center of the circular ring, and thus enter the heating stage of the workpiece 1, i.e., the wheel hub, by the heating mechanism 200. Once the hub is placed in the center of the circular ring, i.e., the center of the area A of the heating mechanism 200, the magnetic petals will close again, and the workpiece 1, i.e., the wheel hub, will be kept in the appropriate position by the permanent magnetic force and the clamping force of the feeding mechanism 100. Subsequently, the entire permanent magnetic device starts to rotate relative to the workpiece 1 to uniformly heat the wheel hub. During the heating process, the wheel hub remains stationary under the action of the feeding mechanism 100 and the permanent magnetic force, thereby ensuring the uniformity and efficiency of heating.

[0051] In some embodiments, such as Figure 2~Figure 6 As shown, the heating mechanism 200 of the heating device of the present invention further includes a driving member 220, which is disposed on a side of the heating member 210 away from the feeding mechanism 100, and is used to carry multiple heating members 210 and drive the heating members 210 to rotate together or stop rotating together. The control unit 300 is connected to the driving member 220, and is used to control the driving member 220 to drive the multiple heating members 210, i.e., the permanent magnet block, to rotate after forming a closed structure.

[0052] In some embodiments, Figure 2~Figure 6 As shown, the driving member 220 includes a rotating table 221 for carrying a plurality of heating members 210, i.e., permanent magnet blocks. The driving member 220 also includes a first motor 222, any one of a reducer, or a combination of any two. The first motor 222, any one of a reducer, or a combination of any two are connected to the rotating table 221. For example, the first motor 222 and the reducer can be used in combination to output power and drive the closed structure of the plurality of heating members 210 to rotate or stop rotating. The first motor 222 is connected to the rotating table 221 via a conveyor belt 223. Through the design of the driving member 220, the first motor 222 drives the rotating table 221 to perform forward and reverse bidirectional rotation switching, changes the rotation direction, and causes the heating member 210, i.e., the permanent magnet, to rotate clockwise or counterclockwise, so as to achieve the direction change of the permanent magnet as required. The high-speed rotating permanent magnet generates a high-speed rotating magnetic field, which cuts the magnetic lines of force for the workpiece 1 located at the center of the area A of the closed structure and not moving. The workpiece 1 generates an induced electromotive force and eddy currents. The eddy currents cause the workpiece 1 to heat up a lot in a short time, thereby quickly and controllably heating the workpiece 1.

[0053] In some other embodiments, the driving member 220 may also be a structure such as a hydraulic cylinder to replace the rotating table 221 and the first motor 222 .

[0054] In addition, in other replaceable embodiments, by redesigning the first motor 222 of the driving member 220, the rotating table 221 and the heating member 210, the heating member 210 is not closed to form a closed structure, that is, when the heating members 210 deviate from each other to form an avoidance channel, for example, the first motor 222 of the driving member 220 is used to drive the heating member 210 to perform movements such as eccentric oscillation and swinging in the rotating table 221, and the workpiece 1 to be processed is clamped by the feeding mechanism 100, and the workpiece 1 to be processed performs a spatial compound movement of cutting the magnetic lines of force in the central magnetic field cavity.

[0055] In some embodiments, the feeding mechanism 100 is arranged opposite to the heating mechanism 200, and the feeding mechanism 100 has a feeding piece 110, which is longitudinally extended and arranged on one side of the heating piece 210. The feeding piece 110 is equivalent to a longitudinal telescopic piece. The feeding piece 110 is connected to the control unit 300, and the control unit 300 is used to control the feeding piece 110 to telescopically move along the longitudinal direction to grab and move the workpiece 1 to be processed, i.e., the wheel hub; the feeding piece 110 can be a structural component of a connected hydraulic cylinder and a connecting sleeve, and the hydraulic cylinder is used to drive the telescopic movement of the connecting sleeve.

[0056] In addition, an adsorption member can be provided at one end of the material feeding member 110 close to the heating member 210 to facilitate material suction or discharge operations. Since the workpiece 1 to be processed is a wheel hub, its weight is relatively large, and the adsorption member can generate a relatively large adsorption force, such as an electromagnetic adsorption force, to firmly grasp the workpiece 1 to be processed.

[0057] At the same time, when the workpiece 1 to be processed is a wheel hub to be processed, since the central area of ​​the wheel hub is generally designed as a hollow structure, a radial telescopic member (not shown) can also be provided at the end of the feed member 110 close to the heating member 210. The radial telescopic member is connected to the end of the feed member 110 close to the heating member 210. When it is necessary to move the heated wheel hub, the radial telescopic member expands along the radial direction of the wheel hub toward the side away from the hollow structure and firmly grasps the workpiece 1 to be processed for material transfer. When it is necessary to place the lower wheel hub, the radial telescopic member contracts along the radial direction of the wheel hub toward the side close to the hollow structure until it is separated from the workpiece 1 to be processed. During the clamping process, the traditional clamping jaws should be prevented from deforming or damaging the workpiece 1 to be processed.

[0058] Furthermore, the material feeding member 110 also includes a combination of at least one or more of an electric telescopic member, a pneumatic telescopic member, and a hydraulic telescopic member to be connected to an adsorption member or a radial telescopic member. The control unit 300 is used to control the material feeding member 110 to align along the direction of the incoming material path of the workpiece 1 to be processed and to grab and move the workpiece 1 to the heating position to increase the flexibility, positioning accuracy and automation effect of grabbing the workpiece 1 to be processed, so that the material feeding mechanism 100 can accurately place the workpiece 1 to be processed, such as a wheel hub, in the heating position, ensuring the accuracy of the heating process.

[0059] When the heating element 210 is a permanent magnet block, after the workpiece 1 to be processed is heated, the control unit 300 controls the multiple permanent magnet blocks to gradually move away from each other to gradually reduce the permanent magnetic force generated and generate an avoidance channel, and the control unit 300 controls the feeding member 110 of the feeding mechanism 100 to generate an upward tensile force in the longitudinal direction until the upward tensile force of the feeding member 110 is greater than or equal to the sum of the longitudinal permanent magnetic force of the heating element 210, i.e., the permanent magnet block and the gravity of the workpiece 1 to be processed, and the feeding mechanism 100 drives the heated workpiece 1 to be processed to separate from the heating element 210, i.e., the permanent magnet block, and move upward in the longitudinal direction toward the side away from the heating mechanism 200, i.e., the permanent magnet device.

[0060] In some embodiments, the feeding mechanism 100 further includes a release aid. In a further embodiment, the release aid includes a shock absorber. The shock absorber is disposed on the inner surfaces of the plurality of heating elements 210, i.e., permanent magnet blocks, which face each other. The shock absorber is an elastic element, for example, it may be any one of an elastic sheet or a spring. When the feeding element 110 stretches the workpiece 1 to be processed upward, the permanent magnetic force generated by the heating element 210, i.e., the permanent magnet block, and the gravity of the workpiece 1 to be processed can be offset. The use of the shock absorber makes it easy for the workpiece 1 to be processed to be separated from the heating element 210, i.e., the permanent magnet block. At the same time, the vibration friction between the workpiece 1 to be processed and the heating element 210, i.e., the permanent magnet block can be reduced to prevent damage to the outer surface quality of the workpiece 1 to be processed.

[0061] In some other embodiments, the feeding mechanism 100 further includes a pushing member, which is connected to the control unit 300. The control unit 300 is used to control the pushing member to push the workpiece 1 to be processed toward the direction of the plurality of heating members 210, i.e., the permanent magnet blocks. The pushing member needs to be designed to be compatible with the position of the rotating table 221. The rotating table 221 can be partially hollowed out, such as opening an avoidance through hole, so that the pushing member can push the workpiece 1 to be processed toward one side of the heating member 210 after passing through the rotating table 221. The feeding member 110 generates an upward tensile force on the workpiece 1 to be processed, and the pushing member generates an upward pushing force on the workpiece 1 to be processed. The two together generate a force to offset the permanent magnetic force generated by the heating member 210, i.e., the permanent magnet block, and the gravity of the workpiece 1 to be processed, so that the workpiece 1 to be processed is separated from the heating mechanism 200, i.e., the permanent magnet device, and is transferred out. The workpiece 1 to be processed is pushed out by the pushing member without damaging the workpiece 1 to be processed. Furthermore, since the material feeding member 110 clamps the side of the workpiece 1 such as the wheel hub from one side and the material pushing member clamps the other side of the workpiece 1 such as the wheel hub from the other side, the material feeding member 110 and the material pushing member can facilitate the separation of the workpiece 1 from the heating member 210, i.e., the permanent magnet block, and can simultaneously clamp and fix the workpiece 1, thereby achieving double fixation of the workpiece 1.

[0062] Therefore, in the feeding mechanism 100 of the heating device of the present invention, the feeding member 110, the release aid such as a shock absorber and the pushing member are designed, and at least one side of the workpiece 1 to be processed is clamped and fixed by the feeding member 110 and / or the pushing member, and the first motor 222 of the driving member 220 drives the rotating table 221 and the heating member 210, i.e., the permanent magnet block, to rotate, so that the magnetic field of the closed structure acts on the workpiece 1 to be processed, so that the workpiece 1 to be processed performs a rotational motion that cuts the magnetic lines of force in the magnetic field cavity of the closed structure, and generates heat inside the workpiece 1 to be processed; when the temperature of the workpiece 1 to be processed reaches the required target heating temperature, the distance retaining effect of the closed structure and the heating member 210, i.e., the permanent magnet block, is released, so that the heating member 210, i.e., the permanent magnet block, moves and the distance increases, thereby increasing the distance between the feeding member 110 and the pushing member, loosening the two ends of the workpiece 1 to be processed, and then removing the workpiece 1 to be processed from the central magnetic field cavity.

[0063] Therefore, the heating device of the present invention can solve the problem of lack of accurate positioning of the workpiece 1 before and after heating, especially the problem that the workpiece 1 to be processed is difficult to separate from the permanent magnet device after heating, and the surface quality of the workpiece 1 to be processed or deformation is easily damaged. In addition, the heating device can also avoid the phenomenon that the workpiece 1 to be processed is heavy and easy to fall off the feeding member 110, reducing personal safety damage and property loss. In addition, since the feeding mechanism 100 clamps the workpiece 1 to be processed to the heating position, no force is generated on the circumferential surface of the workpiece 1 to be processed, and the distance between the multiple heating members 210, i.e., the permanent magnet block and the center of the area A can be adjusted, so that the radial size of the workpiece 1 to be processed can be a variable value. Therefore, the heating device can also solve the problem that the current heating device cannot adapt to the processing of workpieces of different shapes, sizes and materials, but can meet the different requirements of permanent magnetic induction heating under different parts and different sizes of the workpiece 1 to be processed, so that the application range of the heating device is wider.

[0064] In some of the embodiments, the control unit 300 is also used to obtain the temperature of the workpiece 1 to be processed when heating the workpiece 1, and to control the heating mechanism 200, that is, the permanent magnet device, to stop rotating and heating after the workpiece 1 to be processed reaches the target heating temperature; thereby, the heating device can meet the temperature monitoring and stopping conditions of the workpiece 1 to be processed, that is, it can meet the real-time monitoring of the temperature of the workpiece 1 to be processed, such as the wheel hub, during the heating process, and when the wheel hub reaches the target heating temperature, the permanent magnet device stops rotating.

[0065] It should also be added that the target heating temperature is the target preset temperature of the workpiece 1 to be processed by the heating device of the present invention, which can be a certain temperature threshold, or can be certain temperature point values ​​within the temperature threshold. The adjustable range of the target heating temperature is 0°C~40°C. It can further be any adjustable range temperature of 5°C~35°C, 10°C~30°C, 15°C~25°C. Furthermore, the temperature point value includes but is not limited to any value of 5°C, 7°C, 10°C, 13°C, 15°C, 17°C, 20°C, 23°C, 25°C, 27°C, 30°C, 32°C, and 35°C, so that during the processing of the workpiece 1 to be processed, the temperature setting meets the requirements of the operator, the workpiece 1 to be processed, the production equipment, and the cost considerations. By setting the target heating temperature, before reaching the target heating temperature, the control unit 300 controls the multiple heating elements 210 to enclose and form a closed structure and rotate relative to the workpiece 1 to be processed, and controls the feeding mechanism 100 to clamp the workpiece 1 to be processed, and when the target heating temperature is reached, the control unit 300 controls the multiple heating elements 210 to stop rotating and also stop heating the workpiece 1 to be processed, which is equivalent to the control unit 300 using a PID closed-loop control algorithm to achieve precise control of the processing temperature of the workpiece 1 to be processed, reducing the risk of operators contacting high-temperature workpieces 1 to be processed, such as wheel hubs, improving safety, and avoiding local overheating or insufficient heating. Due to the automation and precise control of the heating process, the heating time is reduced and the overall production efficiency is improved. Due to the uniform and efficient heating, the system can reduce energy consumption while ensuring the heating effect.

[0066] In the above embodiment, the control unit 300 is a high-performance PLC or microcontroller, which is responsible for receiving and processing various feedback signals such as the temperature signal of the workpiece 1. The control unit 300 adopts a PID control algorithm to adjust the rotation speed and heating power of the heating mechanism 200, i.e., the permanent magnet device, in real time according to the temperature feedback signal to achieve accurate temperature control of the workpiece 1.

[0067] In some of the embodiments, the multiple heating elements 210 of the above-mentioned heating mechanism 200 can be close to each other to form a closed structure, wherein the control unit 300 is used to control the multiple heating elements 210 to form a closed structure before the workpiece 1 to be processed enters the heating position.

[0068] In some of the embodiments, the multiple heating elements 210 of the above-mentioned heating mechanism 200 can be separated from each other and enclosed to form an avoidance channel, wherein the control unit 300 is also used to control the multiple heating elements 210 to separate from each other and enclose to form an avoidance channel after the workpiece 1 to be processed is configured at the heating position and before the workpiece 1 to be processed is located at the center A of the closed area, so that the workpiece 1 to be processed passes through the avoidance channel and moves toward one end of the center A of the area to enter the enclosed area of ​​the multiple heating elements 210.

[0069] In some embodiments, it should be added that the heating element 210, i.e., the permanent magnet block, can be provided with multiple groups of different sizes and different quantities to adapt to the settings of the shape, outer diameter, height, etc. of the hub of different workpieces 1 to be processed. The shape and size of the heating elements 210, i.e., the permanent magnet blocks, of the same group of the heating mechanism 200 are set to be the same; when the workpieces 1 to be processed are different, the shape and size of the heating elements 210 between different groups are set to be different, and the inner diameter of the closed structure formed by the enclosure is different, and the closed structure has a preset inner diameter size to adapt to the workpieces 1 to be processed of different shapes and sizes. The adjustable range of the preset inner diameter size of the closed structure enclosed by the heating element 210 satisfies 350mm~600mm, and can further be any one of the adjustable range sizes of 370mm~580mm, 390mm~560mm, 410mm~540mm, 430mm~520mm, 450mm~500mm, and 470mm~480mm, so as to meet the different shape and size requirements of the workpiece 1 to be processed.

[0070] In some of the embodiments, the control unit 300 is electrically connected to the feeding mechanism 100, and is used to control the multiple heating elements 210 to separate to release the workpiece 1 to be processed after the heating of the workpiece 1 is completed, and to control the feeding mechanism 100 to move the workpiece 1 to be processed out of the heating position, thereby completing the discharge requirement of the workpiece 1 to be processed.

[0071] In some embodiments, the control unit 300 is electrically connected to the heating element 210, i.e., the permanent magnet block, and the feeding mechanism 100, and is used to control the multiple heating elements 210, i.e., the permanent magnet blocks, to enclose and form an avoidance channel after the workpiece 1 to be processed is heated, so that the workpiece 1 to be processed moves through the avoidance channel toward the end away from the center A of the area, and to control the feeding mechanism 100 to move the workpiece 1 to be processed out of the heating position. That is, after the workpiece 1 to be processed is heated, the magnetic petals of the permanent magnet device are separated again, and the feeding mechanism 100 releases the heated workpiece 1 to be processed, i.e., the wheel hub, and the feeding mechanism 100 moves the heated wheel hub out of the heating position and sends it to the next process or storage area. The heating mechanism 200, i.e., the annular permanent magnet device, can firmly fix the workpiece 1 to be processed, i.e., the wheel hub, through the closing and separation between the multiple heating elements 210, i.e., the permanent magnet blocks, combined with the clamping effect of the feeding mechanism 100 on the workpiece 1 to be processed, to prevent it from moving during the heating process, thereby ensuring the uniformity of heating and processing accuracy of the workpiece 1 to be processed. The workpiece 1 to be processed, i.e., the wheel hub, is fixed under the action of the feeding mechanism 100, and the heating mechanism 200 rotates relative to the workpiece 1 to be processed, thereby ensuring the uniformity of heating of the workpiece 1 to be processed and avoiding the problem of local overheating or insufficient heating. The heating device of the present invention has a compact structure, saves space, and is suitable for processing environments with limited space. Since the workpiece 1 to be processed, i.e., the wheel hub, is fixed during the heating process, the risk of operators contacting the high-temperature wheel hub is reduced, thereby improving safety. The system can adapt to workpieces 1 to be processed, i.e., wheel hubs, of different sizes and shapes, and has good versatility. Due to the automation and precise control of the heating process of the workpiece 1 to be processed by the heating device of the present invention, the heating time is reduced and the overall production efficiency is improved. Due to the uniform and efficient heating, the system can reduce energy consumption while ensuring the heating effect. In summary, the heating device of the present invention realizes efficient and uniform heating of the workpiece 1 to be processed, i.e., the wheel hub, by combining the advantages of automation and permanent magnet technology, improves processing efficiency and quality, reduces operating costs, enhances safety and reliability, and greatly improves production efficiency.

[0072] In the heating device of the present invention, by designing the feeding mechanism 100, after the workpiece 1 to be processed, i.e., the wheel hub, is received, the control unit 300 controls the feeding mechanism 100 to place the workpiece 1 to be processed at a position suitable for heating, and during the heating process of the workpiece 1 to be processed, the control unit 300 controls the feeding mechanism 100 to keep the workpiece 1 immobile, and after the heating of the workpiece 1 to be processed is completed, the control unit 300 controls the feeding mechanism 100 to discharge the workpiece 1. By connecting the feeding mechanism 100 with the control unit 300, the automatic operation of the feeding mechanism 100 reduces manual intervention, improves production efficiency, and reduces labor costs. Since the heating mechanism 200, i.e., the permanent magnet device, is kept stationary in the vertical direction around the longitudinal direction, after the workpiece 1 to be processed is received, the control unit 300 controls the multiple heating members 210, i.e., the magnetic petals, i.e., the permanent magnet blocks, to separate. After the feeding mechanism 100 clamps the workpiece 1 to be processed, i.e., the wheel hub, passes through the avoidance channel and enters the closed area center A position of the multiple magnetic petals, the control unit 300 controls the heating mechanism 200, i.e., the permanent magnet device, to rotate relative to the periphery of the workpiece 1 to heat the workpiece 1 to be processed, i.e., the wheel hub to be processed. After the wheel hub reaches the target heating temperature, the control unit 300 controls the permanent magnet device to stop rotating to achieve uniform heating of the wheel hub. The above-mentioned design of the heating device of the present invention combines the advantages of automation and permanent magnet technology, realizes efficient and uniform heating of the wheel hub, and reduces manual intervention and operating costs. In practical applications, the heating device may need to be closely integrated with temperature control systems, sensors, and automated control systems to ensure the accuracy and reliability of the entire heating process.

[0073] The present invention also provides a method for controlling a heating device, based on the heating device as described in any one of the above items, comprising the steps of:

[0074] The workpiece 1 to be processed is arranged at a heating position until the workpiece 1 reaches the center A of the area of ​​the heating mechanism 200 , and the plurality of heating elements 210 are enclosed to form a closed structure to heat the workpiece 1 to be processed.

[0075] In this step, when the workpiece 1 reaches the heating position and reaches the area center A of the multiple heating elements 210, the multiple heating elements 210 are brought close to each other until they are closed to form a closed structure, which is a closed circular ring. When the workpiece 1 is located at the center of the closed circular ring, the area center A of the multiple heating elements 210 is also the center position of the closed structure after the heating elements 210 enclose the closed structure to form the closed structure. The feeding mechanism 100 clamps and fastens the workpiece 1 to keep it still, and the heating element 210 rotates relative to the workpiece 1 to heat the workpiece 1. The workpiece 1 is a wheel hub to be processed, the heating mechanism 200 is a circular permanent magnet device, and the heating element 210 is a magnetic petal. The magnetic petals are brought close to each other to form a closed circular ring to heat the wheel hub to be processed.

[0076] In some embodiments, the step of heating the workpiece 1 to be processed further includes:

[0077] The temperature of the workpiece 1 to be processed is obtained, and when the workpiece 1 to be processed reaches the target heating temperature, the heating mechanism 200 stops rotating.

[0078] In this step, the real-time heating temperature of the workpiece 1 is obtained, and after the workpiece 1 reaches the target heating temperature, the heating mechanism 200, i.e., the permanent magnet device, stops rotating and stops heating the workpiece 1. The target heating temperature in this step is the target preset temperature of the heating device of the present invention, which can be a certain temperature threshold or a certain point value within the threshold.

[0079] In some embodiments, after the workpiece 1 is placed at the heating position and before the workpiece 1 reaches the center A of the closed area, the process further includes:

[0080] A plurality of heating elements 210 , namely permanent magnet blocks, enclose a avoidance channel, and the feeding mechanism 100 clamps the workpiece 1 to be processed through the avoidance channel and moves toward one end of the center A of the area.

[0081] In this step, multiple heating elements 210, i.e., permanent magnet blocks, are separated from each other and enclosed to form an avoidance channel. The workpiece 1 to be processed passes through the avoidance channel and moves toward one end of the center of the area A to enter the interior of the heating mechanism 200, i.e., the permanent magnet device, and gradually approaches the center position of the closed structure, so that the heating element 210, i.e., the permanent magnet block, is finally closed to form a closed ring to heat the workpiece 1 to be processed clamped and fixed by the feeding mechanism 100.

[0082] In some embodiments, before the workpiece 1 is placed at the heating position, the plurality of heating elements 210, i.e., permanent magnet blocks, are enclosed to form a closed structure. That is, before the step of placing the workpiece 1 at the heating position, the plurality of heating elements 210, i.e., permanent magnet blocks, are close to each other and enclosed to form a closed structure, i.e., they are adsorbed together by magnetic force to form a closed structure.

[0083] In some embodiments, after the workpiece 1 is heated, the process further comprises the following steps:

[0084] A plurality of heating elements 210, i.e., permanent magnetic blocks, are enclosed to form an avoidance channel to allow the workpiece 1 to pass through, and the feeding mechanism 100 moves the workpiece 1 out of the heating position. In this step, a plurality of heating elements 210, i.e., permanent magnetic blocks, are separated from each other and enclosed to form an avoidance channel, the workpiece 1 to be processed passes through the avoidance channel and moves toward one end away from the center A of the area, the feeding mechanism 100 releases the workpiece 1 to be processed, and the feeding mechanism 100 moves the workpiece 1 to be processed out of the heating position.

[0085] Therefore, in the control method of the heating device of the present invention, the workpiece 1 to be processed is arranged at the heating position until the workpiece 1 to be processed reaches the center A of the region of the heating mechanism 200, i.e., the permanent magnet device, and multiple heating members 210, i.e., permanent magnet blocks, are enclosed to form a closed structure, and the feeding mechanism 100 keeps the workpiece 1 to be processed stationary, and the closed structure is rotated around the periphery of the workpiece 1 to be processed, so as to heat the workpiece 1 to be processed. During heating, the workpiece 1 to be processed is arranged at the center A of the region of the multiple heating members 210, i.e., the permanent magnet blocks, and multiple heating members 210, i.e., the permanent magnet blocks are closed to form a closed structure, and the workpiece 1 to be processed is clamped by the feeding mechanism 100, and the workpiece 1 to be processed remains stationary when the heating mechanism 200, i.e., the permanent magnet device, rotates, and the permanent magnet device rotates around the periphery of the workpiece 1 to be processed, thereby ensuring the uniformity and efficiency of heating the workpiece 1 to be processed by the heating device of the present invention.

[0086] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In addition, the terms "above" and "below" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "above" and "below" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0090] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A heating device, characterized in that: include: A feeding mechanism, used for receiving and placing the workpiece to be processed to a heating position; The heating mechanism comprises a plurality of heating elements, wherein the plurality of heating elements are arranged circumferentially; A control unit is electrically connected to the heating mechanism; wherein, The control unit is used for controlling the plurality of heating elements to enclose and form a closed structure to heat the workpiece when the workpiece is located at the heating position; The feeding mechanism comprises: A release aid is arranged on the inner surfaces of the plurality of heating elements facing each other, and the release aid is one of an elastic sheet or a spring; The feeding mechanism comprises: The material feeding member is arranged on the same side of the plurality of heating members along the longitudinal extension; wherein, The control unit is connected to the material feeding member and is used to control the material feeding member to clamp the workpiece to be processed; Before the workpiece is heated, the workpiece is used to pass through the plurality of heating elements and move toward the center of the region of the heating mechanism; after the workpiece is heated, the workpiece is used to pass through the plurality of heating elements and move toward one end away from the center of the region, and the feeding mechanism is used to move the workpiece out of the heating position; The heating element is a permanent magnet block. When the workpiece is heated, the control unit controls the plurality of permanent magnet blocks to gradually move away from each other to gradually reduce the permanent magnetic force generated and generate an avoidance channel, and the control unit controls the feeding element of the feeding mechanism to generate an upward tensile force in the longitudinal direction until the upward tensile force of the feeding element is greater than or equal to the sum of the permanent magnetic force of the permanent magnet block in the longitudinal direction and the gravity of the workpiece to be processed, and the feeding mechanism drives the heated workpiece to be processed to separate from the permanent magnet block and move upward in the longitudinal direction toward the side away from the heating mechanism; When the feed piece pulls the workpiece to be processed upward, it can offset the permanent magnetic force generated by the permanent magnet block and the gravity of the workpiece to be processed. The release aid is used to make it easy for the workpiece to be processed to separate from the permanent magnet block, while reducing the vibration and friction between the workpiece to be processed and the permanent magnet block, thereby preventing damage to the outer surface quality of the workpiece to be processed.

2. The heating device according to claim 1, characterized in that The control unit is further used to obtain the temperature of the workpiece to be processed when heating the workpiece to be processed, and to control the heating mechanism to stop heating after the workpiece to be processed reaches a target heating temperature.

3. The heating device according to claim 1, characterized in that: The heating mechanism also includes: A driving member, disposed on a side of the plurality of heating members away from the feeding mechanism; The control unit is connected to the driving member and is used to control the driving member to drive the plurality of heating members to rotate after the closed structure is formed.

4. The heating device according to claim 3, characterized in that: The driving member comprises: A rotating table, arranged on a side of the plurality of heating elements away from the feeding mechanism, and used for carrying the plurality of heating elements; The first motor is connected to the rotating platform and is used to drive the closed structure to rotate.

5. A method for controlling a heating device according to any one of claims 1 to 4, characterized in that: Includes steps: The workpiece to be processed is arranged at a heating position until the workpiece to be processed reaches the center of the area of ​​the heating mechanism, and a plurality of heating elements are enclosed to form a closed structure to heat the workpiece to be processed.

6. The control method of the heating device according to claim 5, characterized in that: The step of heating the workpiece to be processed also includes: The temperature of the workpiece to be processed is obtained, and when the workpiece to be processed reaches the target heating temperature, the heating mechanism is stopped from rotating.

7. The control method of the heating device according to claim 5, characterized in that: Before the workpiece is heated, the workpiece passes through the plurality of heating elements and moves toward one end of the center of the area; After the workpiece to be processed is heated, the workpiece to be processed passes through the plurality of heating elements and moves toward an end away from the center of the area, and the feeding mechanism moves the workpiece to be processed out of the heating position.

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