heating coil

Abstract

The application relates to a heating coil. The first heating component and the second heating component of the heating coil are rotatably connected, and the first heating component and the second heating component jointly form a heating space; when the first heating component and the second heating component are in a closed position, the first heating component and the second heating component jointly form the heating space, and the first heating component and the second heating component are electrified to heat a workpiece; when the first heating component and the second heating component are in an open position, the first heating component and the second heating component are away from each other on the side away from the rotatable connection to open the heating space, and the heating space is used to put the workpiece into the heating space or take the workpiece out of the heating space. When the relative position of the first heating component and the second heating component of the heating coil is rotated to the open position, the workpiece can be directly put into the heating space or taken out of the heating space, which is beneficial to save the operation space, heat the workpiece of the same length, and reduce the equipment area by nearly half.

Description

Technical Field

[0001] This application relates to the field of induction heating technology, and in particular to heating coils. Background Technology

[0002] With the development of induction heating technology, a heating coil is placed around the workpiece to heat it through heat transfer or electromagnetic induction.

[0003] In related technologies, whether heating coils achieve heating through heat transfer or through electromagnetic induction, they are all helical coiled metal coils, with the interior of the coil forming a heating space. In use, the operator first places the heating coil over the workpiece, then fixes the coil and workpiece in place, and finally energizes the coil to achieve the heating function.

[0004] However, for larger heating coils, due to their significant weight, a large axial dimension is required for inserting workpieces. When assembling and disassembling workpieces, it is necessary to move the heating coil or the workpiece axially to move the workpiece into or out of the heating space. Therefore, existing heating coils require ample operating space, resulting in large equipment footprints. Summary of the Invention

[0005] Therefore, it is necessary to provide a heating coil that addresses the problems of existing heating coils having high requirements for operating space and large equipment footprint.

[0006] A heating coil, the heating coil comprising: A first heating component and a second heating component are rotatably connected, and the first heating component and the second heating component together form a heating space. The relative positions between the first heating component and the second heating component have a closed position and an open position; When the first heating component and the second heating component are in the closed position, the first heating component and the second heating component together form the heating space, and the first heating component and the second heating component are energized to heat the workpiece; When the first heating component and the second heating component are in the open position, the first heating component and the second heating component are separated from each other on the side away from the rotatable connection, so as to open the heating space for placing the workpiece into the heating space or removing the workpiece from the heating space.

[0007] In some embodiments, the first heating component is fixedly disposed, and the second heating component is rotatably disposed relative to the first heating component; And / or, the first heating component and the second heating component are energized to generate a magnetic field to heat the workpiece by electromagnetic induction; And / or, the first heating component includes: Multiple sets of first heating elements are arranged parallel to each other and spaced apart along a first direction; The second heating component includes: Multiple sets of second heating elements are arranged parallel to and spaced apart along the first direction. The second heating elements are rotatably connected to the first heating elements. The multiple sets of second heating elements are arranged in one-to-one correspondence with the multiple sets of first heating elements. When the first heating component and the second heating component are in the closed position, the ends of the second heating element that are close to and away from the rotating shaft of the second heating element abut against the two ends of the first heating element, so that the first heating element and the second heating element are electrically connected in the energized state.

[0008] In some embodiments, the second heating component further includes: A first connector is provided along the first direction and passes through multiple sets of second heating elements. The first connector is used to drive the multiple sets of second heating elements to rotate synchronously.

[0009] In some embodiments, the first heating component further includes: A second connector is disposed near one end of the plurality of first heating elements and passes through the plurality of first heating elements; and The third connector is disposed near the other end of the first heating element and passes through multiple sets of the first heating elements. The end of the second heating element near the first connector passes through the third connector. The second heating elements and the first heating elements are disposed in a one-to-one correspondence and abut against each other on opposite sides along the first direction.

[0010] In some embodiments, the second heating element includes: First heating section; A first connecting portion is connected to one end of the first heating portion, the first connecting portion is sleeved on the third connecting member, and the first connecting portion can abut against the side of the first heating member along the first direction; and The second connecting part is connected to the other end of the first heating part. The second connecting part is constructed with a mating groove. When the second heating element is in the closed position, the mating groove overlaps with the second connecting part so that the second connecting part can abut against the side of the first heating element along the first direction.

[0011] In some embodiments, the heating coil further includes: A limiting component, the limiting component being configured to cause corresponding surfaces of the first heating element and the second heating element to abut against each other.

[0012] In some embodiments, the limiting component includes: A limiting member, sleeved on the second connecting member and the third connecting member, is located between two adjacent sets of the first heating elements; and A limiting drive member is disposed at one end of the second connector and the third connector. The limiting drive member is configured to drive the second connector and the third connector to move along the first direction when the second heating component is in the closed position, so that the first heating component and the second heating component are abutted in a one-to-one correspondence. The two ends of the limiting member abut against the first heating component and the second heating component in two adjacent groups, respectively.

[0013] In some embodiments, the heating coil further includes: A cooling component configured to cool the first heating component and the second heating component.

[0014] In some embodiments, the first heating element includes a metal tube, the second heating element includes a metal tube, and the cooling assembly includes: Multiple sets of connecting pipes are provided, which are connected between two adjacent sets of first heating elements or second heating elements. The two adjacent sets of connecting pipes connected to the first heating elements are respectively connected to positions near both ends of the metal pipe. The connecting pipes located at both ends along the first direction are used to connect to an external refrigerant source, so that the refrigerant flows sequentially through each set of metal pipes in the multiple sets of first heating elements. The two adjacent sets of connecting pipes connected to the second heating element are respectively connected to the two ends near the metal pipe. The connecting pipes located at both ends along the first direction are used to connect to an external refrigerant source so that the refrigerant flows sequentially through each set of metal pipes in the multiple sets of the second heating element.

[0015] In some embodiments, the heating coil further includes: A driving component, the output of which is connected to the second heating component, is configured to drive the second heating component to rotate relative to the first heating component. And / or, when the first heating component and the second heating component are in the closed position, the insulation component is sleeved on the first heating component and the second heating component, and the insulation component is configured to keep the first heating component and the second heating component warm when they are heating.

[0016] The beneficial effects of this application are: This application provides a heating coil. The heating coil includes a first heating component and a second heating component, which are rotatably connected and together form a heating space. The relative positions of the first and second heating components have a closed position and an open position. When the first and second heating components are in the closed position, they together form the heating space, and the first and second heating components are energized to heat a workpiece. When the first and second heating components are in the open position, the sides of the first and second heating components away from the rotatably connected components move away from each other to open the heating space, allowing workpieces to be placed into or removed from the heating space. This heating coil divides a spirally wound metal coil in related technologies into a first heating component and a second heating component. By utilizing the relative rotation of the first and second heating components, when their relative positions are in a closed state, the structure is similar to that of existing spirally wound metal coils, and it has the function of energizing and heating. Furthermore, in this embodiment, when the relative positions of the first and second heating components are rotated to the open position, workpieces can be directly placed into or removed from the heating space, which helps save operating space. When heating workpieces of the same length, the equipment footprint can be reduced by nearly half. At the same time, through this heating coil, for equipment with the same axial dimension in the prior art, a heating coil with a length up to twice that in the prior art can be assembled, thereby expanding the range of workpiece sizes that the heating equipment can heat, and thus expanding the applicability of the heating equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a heating coil provided in one embodiment of this application. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of a heating coil provided in one embodiment of this application. Figure 2 .

[0019] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 4 for Figure 2 A magnified view of a section at point B.

[0021] Figure 5 This is a schematic diagram of the structure of the second heating element provided in one embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the structure of a heating coil provided in one embodiment of this application. Figure 3 .

[0023] Explanation of reference numerals in the attached figures: 1000, heating coil; 100. First heating assembly; 110. First heating element; 111. Second heating section; 112. Abutment block; 120. Second connector; 130. Third connector; 200. Second heating assembly; 210. Second heating element; 211. First heating part; 212. First connecting part; 2121. First through hole; 2122. Second through hole; 213. Second connecting part; 2131. Mating groove; 220. First connecting member; 230. Fourth connecting member; 300. Heated space; 400. Limiting component; 410. Limiting element; 420. Limiting drive element; 500. Cooling assembly; 510. Connecting pipe; 600. Driver components; 700. Insulation components; 800. Frame; 2000, workpiece. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] See Figure 1 , Figure 1 A schematic diagram of the structure of a heating coil 1000 provided in one embodiment of this application is shown.

[0031] like Figure 1As shown, this embodiment provides a heating coil 1000. The heating coil 1000 includes a first heating component 100 and a second heating component 200, which are rotatably connected. The first heating component 100 and the second heating component 200 together form a heating space 300. The relative positions between the first heating component 100 and the second heating component 200 have a closed position and an open position. When the first heating component 100 and the second heating component 200 are in the closed position, the first heating component 100 and the second heating component 200 together form the heating space 300, and the first heating component 100 and the second heating component 200 are energized to heat the workpiece 2000. When the first heating component 100 and the second heating component 200 are in the open position, the sides of the first heating component 100 and the second heating component 200 away from the rotatably connected side are moved away from each other to open the heating space 300 for placing the workpiece 2000 into the heating space 300 or removing the workpiece 2000 from the heating space 300.

[0032] The heating coil 1000 divides the spiral-wound metal coil structure in related technologies into a first heating component 100 and a second heating component 200. By utilizing the relative rotation of the first heating component 100 and the second heating component 200, when their relative positions are in a closed state, the structure is similar to that of an existing spiral-wound metal coil, and it has the function of energizing and heating. Simultaneously, in this embodiment, when the relative positions of the first heating component 100 and the second heating component 200 are rotated to the open position, the workpiece 2000 can be directly placed into or removed from the heating space 300, which helps save operating space. Heating workpieces 2000 of the same length can reduce the equipment footprint by nearly half. Furthermore, through this heating coil 1000, for equipment with the same axial dimensions in the prior art, a heating coil 1000 of up to twice the length of that in the prior art can be assembled, thereby expanding the range of workpiece sizes that the heating equipment can heat, and thus expanding the applicability of the heating equipment.

[0033] In some embodiments, the first heating component 100 is fixedly disposed, and the second heating component 200 is rotatably disposed relative to the first heating component 100. When the second heating component 200 rotates back to the closed position relative to the first heating component 100, the first heating component 100 and the second heating component 200 cooperate to form a heating space 300. After being energized, both components work together to heat the workpiece 2000 within the heating space 300. When the second heating component 200 rotates outward around the rotatable connection position to the open position, the heating space 300 opens laterally, allowing workers or automated mechanisms to place the workpiece 2000 into or remove it from the heating space 300. After the workpiece 2000 is loaded or unloaded, the second heating component 200 is driven to rotate back to the closed position, initiating the workpiece 2000 heating process.

[0034] In this embodiment, the first heating component 100 is set as a fixed structure, and only the second heating component 200 is driven to complete the opening and closing action. This reduces the number of drive mechanisms, simplifies the overall transmission structure, and lowers the equipment manufacturing cost. Simultaneously, the fixed first heating component 100 can serve as a positioning reference, facilitating control of the splicing gap between the two heating components in the closed state, ensuring a stable and uniform heating magnetic field, and resulting in a smaller total inertia of the moving parts and a faster opening and closing response. Furthermore, it allows for the planning of automated loading and unloading paths based on the fixed reference, facilitating integration with automated production lines. In addition, the first heating component 100 can be used to connect to an external power source. By fixing the first heating component 100, the cable connected to the external power source does not need to rotate with the component, effectively avoiding the problem of repeated bending and aging of the cable, and improving the reliability of equipment operation.

[0035] In some embodiments, the first heating component 100 and the second heating component 200 are energized to generate a magnetic field, thereby heating the workpiece 2000 through electromagnetic induction. When energized, the first heating component 100 and the second heating component 200 together generate an alternating magnetic field. When the workpiece 2000 is placed inside the heating space 300 formed by the two components, the alternating magnetic field penetrates the workpiece 2000 and induces eddy currents inside it. Electromagnetic induction heating of the workpiece 2000 is achieved through the eddy current heating effect. When the first heating component 100 and the second heating component 200 are rotated to the open position, the workpiece 2000 can be loaded and unloaded. When switched to the closed position, they form a complete magnetic field generating structure, ensuring that the alternating magnetic field effectively surrounds the workpiece 2000 and continuously achieves induction heating.

[0036] The heating coil 1000 uses a first heating component 100 and a second heating component 200 to generate a magnetic field and heat the workpiece 2000 through electromagnetic induction. Since no physical components directly contact the workpiece 2000, it avoids problems such as surface scratches, uneven heating, and heat transfer medium loss associated with contact heating. Simultaneously, when the two heating components are closed, they jointly construct a continuous and effective magnetic field loop. The magnetic field can fully surround the workpiece 2000 within the heating space 300, resulting in high heating efficiency and rapid temperature rise. Combined with the opening and closing structure, it allows for rapid loading and unloading of the workpiece 2000, facilitating continuous induction heating production and expanding the applicability of the opening and closing heating coil 1000 in induction heat treatment scenarios.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the first heating component 100 includes multiple sets of first heating elements 110, which are arranged parallel to each other and spaced apart along a first direction; the second heating component 200 includes multiple sets of second heating elements 210, which are arranged parallel to each other and spaced apart along the first direction, and the second heating elements 210 are rotatably connected to the first heating elements 110, with each set of second heating elements 210 corresponding to one set of first heating elements 110; when the first heating component 100 and the second heating component 200 are in the closed position, the ends of the second heating elements 210 that are close to and away from the pivot of the second heating element 210 abut against the two ends of the first heating element 110, so that the first heating elements 110 and the second heating elements 210 are electrically connected in the energized state.

[0038] During operation, when the first heating component 100 and the second heating component 200 are switched to the closed position, the two ends of each second heating element 210 abut against the corresponding first heating element 110, so that each set of matched first heating elements 110 and second heating elements 210 form a conductive electrical connection structure. All heating elements together constitute a complete energized heating circuit. After being energized, an induced magnetic field is generated to heat the workpiece 2000. When the two sets of heating components are switched to the open position, the second heating element 210 rotates and separates from the first heating element 110, releasing the end abutment state, and at the same time opening the heating space 300, completing the loading and unloading operation of the workpiece 2000.

[0039] This embodiment employs a structural design where multiple sets of first heating elements 110 and multiple sets of second heating elements 210 are arranged in a one-to-one correspondence and parallel spacing, with the ends of the corresponding heating elements abutting each other in the closed state to achieve electrical conduction. This design enables the formation of multiple parallel independent heating units, effectively increasing the effective heating area of ​​the heating coil 1000 and improving the heating uniformity and overall heating efficiency of the workpiece 2000. Simultaneously, the one-to-one correspondence between the multiple sets of first heating elements 110 and multiple sets of second heating elements 210 ensures precise alignment and reliable contact and conduction for each set of heating elements, avoiding problems such as poor contact or temperature loss due to circuit breakage in a single set of heating elements. This improves the overall electrical stability of the heating circuit and reduces defects such as local magnetic field deficiencies and uneven heating of the workpiece 2000. Furthermore, the parallel-spaced array structure can regulate the magnetic field distribution, optimize the uniformity of the induction heating magnetic field, and adapt to the motion logic of the opening and closing structure. Each heating unit opens and closes synchronously, conducts and disconnects synchronously, resulting in strong structural linkage and better equipment operational stability and adaptability.

[0040] Optionally, each of the first heating elements 110 and each of the second heating elements 210 extends along an arc-shaped direction, so that when the second heating element 210 rotates relative to the first heating element 110 to a closed position, the two ends of the arc-shaped structure can precisely correspond and contact, forming a complete annular heating area and ensuring the formation of a closed-loop magnetic field. At this time, the first heating element 110 and the second heating element 210 enclose a heating space 300 with a circular cross-section, which is beneficial to improving the uniformity of circumferential processing of the workpiece 2000. Of course, in other embodiments, the first heating element 110 and the second heating element 210 can also enclose a heating space 300 with an elliptical cross-section, which is not limited in this embodiment. Exemplarily, the first heating element 110 and the second heating element 210 are both made of hollow copper tubing with high conductivity and high temperature resistance. The cross-section of the tubing is circular, square, rectangular, or triangular hollow cross-section, and the whole is an arc-shaped rod structure that extends uniformly along the first direction in an array. Each first heating element 110 and its corresponding second heating element 210 together form an independent openable arc-shaped heating unit. Multiple heating units are arranged in a uniform, equidistant, and parallel array along the transverse direction.

[0041] In other embodiments, the first heating element 110 and the second heating element 210 can be any shape such as L-shaped or U-shaped, and the first heating element 110 and the second heating element 210 can enclose and form a heating space 300 when they are in a closed position.

[0042] The extended shapes of the first heating element 110 and the second heating element 210 can be set to correspond to the shape of the workpiece 2000.

[0043] like Figures 1-4As shown, in some embodiments, the second heating assembly 200 further includes a first connector 220. The first connector 220 is arranged along a first direction and passes through multiple sets of second heating elements 210. The first connector 220 is used to drive the multiple sets of second heating elements 210 to rotate synchronously. The first connector 220 passes through multiple sets of parallel second heating elements 210, which can form an overall limiting and linkage constraint on the multiple sets of second heating elements 210. When switching between open and closed positions, the first connector 220 can drive all the second heating elements 210 to rotate synchronously around the rotation connection position, so that the multiple sets of second heating elements 210 can synchronously complete the contact and conduction action with the corresponding first heating element 110 and the separation and opening action, realizing the synchronous switching of the open and closed states of multiple heating units, and cooperating to complete the process switching of workpiece 2000 loading and unloading and electromagnetic induction heating.

[0044] This embodiment integrates multiple groups of second heating elements 210 into a unified linkage structure by setting a first connector 220 passing through the second heating elements 210. This effectively ensures that the rotation stroke and rotation angle of all second heating elements 210 are completely uniform, eliminating problems such as offset, misalignment, and jamming caused by the independent movement of a single second heating element 210. It also ensures that the closing alignment accuracy of each group of second heating elements 210 and the corresponding first heating element 110 is consistent, guaranteeing stable and reliable electrical conduction of each heating circuit. At the same time, this structure eliminates the need for separate drive and positioning structures for each group of second heating elements 210, greatly simplifying the overall drive and control structure of the equipment, reducing control complexity and equipment manufacturing costs, effectively improving the consistency of the opening and closing actions of multiple heating units and the overall operational stability of the equipment, ensuring a uniform and stable distribution of the induction heating magnetic field, and continuously improving the overall heating quality of the workpiece 2000.

[0045] Optionally, the first connector 220 is an integral, long, insulated, rigid rod made of high-strength, high-temperature resistant insulating material. It extends linearly and is arranged along the first direction to accommodate the synchronous assembly of multiple sets of second heating elements 210. Each set of second heating elements 210 has a coaxial, same-diameter second through hole 2122, with the central axes of all the second through holes 2122 collinear. The first connector 220 sequentially passes through the first through holes 2121 of multiple sets of second heating elements 210 to complete the overall installation. The first connector 220 and the first through holes 2121 of each second heating element 210 are fixed together without gaps using a tight-fitting clamp or a clamping method, ensuring that each set of second heating elements 210 forms a rigid fixed structure with the first connector 220, with no relative rotation, axial movement, or radial sway between them. Meanwhile, the first connector 220 can be fitted with limit rings or locking nuts at both ends to axially limit the outermost second heating element 210, constrain the axial position of all the second heating elements 210, ensure that the spacing between multiple sets of second heating elements 210 is constant and the arrangement is regular, and finally integrate all the second heating elements 210 into an integrated linkage motion structure by the first connector 220.

[0046] In this embodiment, the first connector 220, by passing through and fixing multiple sets of second heating elements 210, constrains the dispersed and independent second heating elements 210 into an integral linkage component. Since the first connector 220 is rigidly connected to each second heating element 210, when any second heating element 210 rotates or swings, it will drive all other second heating elements 210 to rotate synchronously, at the same angle, and with the same stroke through the rigid transmission action of the first connector 220. The second heating elements 210 complete the opening and closing swinging action with the third connector 130 as the rotation axis. During the switching between the opening and closing positions, the first connector 220 always keeps the relative positions of each set of second heating elements 210 unchanged, so that all second heating elements 210 synchronously complete the separation and opening and contact closing actions with the corresponding first heating element 110, realizing a high degree of synchronization of the opening and closing actions of multiple heating units, and coordinating to complete the process switching of workpiece 2000 loading and unloading and induction heating.

[0047] This embodiment, through the connection and assembly structure of the first connector 220, integrates multiple independently set second heating elements 210 into a single linked structure. This helps solve problems such as asynchrony, offset, misalignment, and jamming that easily occur when multiple second heating elements 210 move independently. It ensures that the opening and closing angles and swing strokes of all second heating elements 210 are completely consistent, allowing each group of second heating elements 210 to be synchronously and precisely aligned with its corresponding first heating element 110, ensuring reliable contact and conduction. This helps avoid poor contact and circuit instability in a single heating unit, improving the consistency of power supply and the uniformity of magnetic field distribution in multiple heating circuits. Furthermore, this rigid connection structure eliminates the need for separate drive, positioning, and locking mechanisms for each second heating element 210, simplifying the equipment's mechanical structure and control logic, reducing manufacturing costs and debugging difficulty. The first connector 220, made of insulating material, isolates each group of second heating elements 210, reducing crosstalk and short circuit risks, and improving operational safety and long-term stability. Optionally, the first connector 220 is located at one end of the second heating element 210 near the rotating shaft. The second through hole 2122 is located near the rotating shaft of the second heating element 210.

[0048] Optionally, the second heating assembly 200 further includes a fourth connector 230, which is used to connect the ends of multiple sets of second heating elements 210 that are away from the first connector 220, so that both ends of the multiple sets of second heating elements 210 are connected as one unit, which is beneficial to improving the consistency when the multiple sets of second heating elements 210 rotate at the same time.

[0049] like Figure 1 and Figure 3 As shown, in some embodiments, the first heating assembly 100 further includes a second connector 120 and a third connector 130. The second connector 120 is disposed near one end of the plurality of first heating elements 110 and passes through the plurality of first heating elements 110; the third connector 130 is disposed near the other end of the first heating element 110 and passes through the plurality of first heating elements 110; the end of the second heating element 210 near the first connector 220 passes through the third connector 130, and the corresponding second heating elements 210 and first heating elements 110 abut against each other on opposite sides in a first direction.

[0050] In this embodiment, the first heating assembly 100 is equipped with a second connector 120 and a third connector 130. The second connector 120 is positioned near one end of the multiple sets of first heating elements 110 and passes through the multiple sets of first heating elements 110. The third connector 130 is positioned near the other end of the multiple sets of first heating elements 110 and passes through the multiple sets of first heating elements 110. The two sets of connectors limit and fix the multiple sets of first heating elements 110 arranged in a dispersed manner at both ends, so that the multiple sets of first heating elements 110 maintain a fixed spacing and parallelism. At the same time, the end of the second heating element 210 near the first connector 220 passes through the third connector 130, so as to realize the rotational assembly of the second heating element 210 and the first heating element 110. The corresponding second heating elements 210 and the first heating elements 110 are attached to each other along the opposite sides in the first direction, so as to ensure that the alignment posture of each set of matched first heating elements 110 and second heating elements 210 is constant. With the opening and closing action, the heating space 300 is stably opened and closed and switched on and off.

[0051] The heating coil 1000, by providing second connectors 120 and third connectors 130 through multiple sets of first heating elements 110 at both ends, can form an overall limiting constraint on the multiple sets of first heating elements 110 at both ends, effectively fixing the relative position and spacing of each set of first heating elements 110. This avoids problems such as deformation, displacement, or uneven spacing of the first heating elements 110 due to long-term heating and stress, which is beneficial to improving the stability and regularity of the overall structure of the first heating assembly 100. At the same time, the third connector 130 also serves as an assembly reference, allowing the second heating element 210 to be inserted and assembled, precisely defining the rotation axis and assembly position of the second heating element 210, so that the corresponding first heating element 110 and the side of the second heating element 210 are tightly abutted and aligned, greatly improving the opening and closing accuracy of the heating assembly and the reliability of electrical connection. In addition, the combined structure of the double-ended connectors enables the entire first heating component 100 to form an integrated rigid structure, effectively resisting thermal stress and mechanical vibration during the heating process, further ensuring the uniformity of the magnetic field distribution of multiple heating units, and improving the consistency of batch heating of 2000 workpieces and the stability of long-term equipment operation.

[0052] Optionally, both the second connector 120 and the third connector 130 adopt a high-temperature resistant, insulated long rod structure, and are arranged in parallel and respectively assembled at both ends of multiple sets of first heating elements 110. Optionally, both the second connector 120 and the third connector 130 have high rigidity and strength. The second connector 120 is located at the fixed end of the first heating element 110 away from the rotational engagement, and the third connector 130 is located at the hinged end of the first heating element 110 near the rotational engagement. Each set of arc-shaped first heating elements 110 has coaxially arranged through second through holes 2122 at both ends. The axes of the second through holes 2122 at the ends of all first heating elements 110 are collinear, ensuring that the second connector 120 and the third connector 130 can be integrally inserted through all the first heating elements 110 along the first direction. After assembly, the second connector 120 is arranged parallel to the third connector 130. The second connector 120 is connected to the second through hole 2122 at the end of each first heating element 110 by a tight fit or a limiting locking method, ensuring a constant distance between the fixed ends of each first heating element 110 and no relative displacement. The third connector 130 is fixed to the second through hole 2122 at the hinge end of each first heating element 110 by an interference fit, forming an integral fixed structure in which multiple sets of first heating elements 110 are arranged in parallel at equal intervals. Meanwhile, Optionally, the third connector 130 can serve as the rotating hinge shaft for the second heating element 210. The hinge holes at the root of each group of second heating elements 210 near the shaft are rotatably fitted onto the outer periphery of the rod of the third connector 130, allowing the second heating element 210 to swing freely around the third connector 130 as its axis. Both ends of the second connector 120 and the third connector 130 are equipped with limiting and locking structures to prevent axial movement. The overall assembly structure is neat and has high positioning accuracy, meeting the requirements for batch modular assembly. The first connector 220 is parallel to the third connector 130 and is located on the side closest to the third connector 130, thus facilitating the overall movement of multiple groups of second heating elements 210 by driving the first connector 220.

[0053] In this embodiment, the second connector 120 and the third connector 130, respectively arranged at both ends, form a double-end overall constraint positioning for multiple sets of independently distributed first heating elements 110, ensuring that all first heating elements 110 maintain a fixed spacing, parallelism, and installation posture, thus constructing a structurally stable fixed heating base. The third connector 130 serves both as a fixed positioning and hinge shaft, stabilizing the overall structure of the first heating assembly 100 while providing a unified rotation reference for each set of second heating elements 210, allowing all second heating elements 210 to swing and open stably around the same axis. During equipment operation, the second connector 120 and the third connector 130 can always lock the relative position of the first heating elements 110, which helps reduce the displacement and deformation of the first heating elements 110 due to thermal stress and mechanical vibration. This ensures that each set of second heating elements 210 can accurately align and reliably connect with the corresponding first heating element 110 during rotation and opening, enabling multiple heating units to simultaneously complete the process switching between closing heating and opening unloading, ensuring stable operation of the induction heating condition.

[0054] This embodiment uses a double-ended second connector 120 and a third connector 130 to rigidly limit the arrangement of multiple sets of first heating elements 110, effectively locking the spacing and parallelism of each set of first heating elements 110. This reduces problems such as deformation, offset, and uneven spacing caused by long-term high-temperature operation and mechanical vibration of the first heating elements 110, and helps improve the overall structural rigidity and long-term structural stability of the first heating assembly 100. The third connector 130 integrates fixed positioning and hinge shaft functions, eliminating the need for an additional independent hinge structure, simplifying the layout of the whole machine components, reducing equipment processing and assembly costs, and ensuring that the unified rotation axis ensures that the opening and closing rotation reference of all second heating elements 210 is consistent, effectively improving the opening and closing alignment accuracy and action consistency. In addition, the dual-connector combination fixing structure can make the multiple sets of first heating elements 110 be subjected to force and heat evenly, which is conducive to making the heating space 300 formed by the combination of each heating unit regular and uniform, and the magnetic field distribution uniform and stable. This reduces problems such as poor docking, magnetic field disorder, and uneven heating of workpiece 2000 caused by the offset of a single set of first heating elements 110. It is beneficial to improve the heating quality of workpiece 2000 and the stability and repeatability of equipment operation. The modular assembly structure is also convenient for later inspection, replacement and maintenance, and has strong practicality.

[0055] like Figure 5As shown, in some embodiments, the second heating element 210 includes a first heating portion 211, a first connecting portion 212, and a second connecting portion 213. The first connecting portion 212 is connected to one end of the first heating portion 211 and is sleeved on the third connecting member 130. The first connecting portion 212 can abut against the side of the first heating element 110 along a first direction. The second connecting portion 213 is connected to the other end of the first heating portion 211 and has a mating groove 2131. When the second heating element 210 is in the closed position, the mating groove 2131 overlaps with the second connecting member 120 so that the second connecting portion 213 can abut against the side of the first heating element 110 along a first direction.

[0056] The first connecting part 212 is sleeved on the third connecting member 130 to form a rotation fulcrum, allowing the second heating element 210 to rotate relative to the first heating element 110 to switch the opening and closing of the heating space 300. When the second heating element 210 rotates to the closed position, the mating groove 2131 of the second connecting part 213 and the second connecting member 120 form an overlapping and limiting fit, accurately locking the closed posture of the second heating element 210. At the same time, the first connecting part 212 and the second connecting part 213 respectively abut against the corresponding side of the first heating element 110 along the first direction, so that the first heating element 110 and the second heating element 210 form a stable electrical connection structure. After being energized, they can jointly generate an induced magnetic field to heat the workpiece 2000. When the second heating element 210 rotates to open, the mating groove 2131 disengages from the limiting fit of the second connecting member 120, and each connecting part separates from the first heating element 110, thus opening the heating space 300 to complete the workpiece 2000 loading and unloading operation.

[0057] In this embodiment, the second heating element 210 is divided into a first heating part 211, a first connecting part 212, and a second connecting part 213. The hinged engagement between the first connecting part 212 and the third connecting part 130, and the overlapping engagement between the second connecting part 213's groove 2131 and the second connecting part 120, achieves dual positioning constraints at both ends of the second heating element 210. This improves the closing alignment accuracy and repeatability of the second heating element 210, reducing offset and wobbling during opening and closing. Simultaneously, the conductive method of the connecting parts at both ends abutting against the sides of the first heating element 110 ensures sufficient conductive contact and stable circuit conduction after the heating assembly is closed, effectively reducing contact resistance and heat loss, ensuring a uniform and stable magnetic field distribution, and significantly improving the uniformity and consistency of induction heating of the workpiece 2000. Furthermore, this structure is simple and reliable, with precise opening and closing positioning, effectively improving the overall operational stability and processing adaptability of the equipment.

[0058] like Figure 4 and Figure 5As shown, optionally, the first heating element 110 includes a second heating part 111 and two sets of abutment blocks 112. The two sets of abutment blocks 112 are respectively connected to both ends of the second heating part 111, and the abutment blocks 112 have a plane arranged along the first direction. The first connecting part 212 and the second connecting part 213 both have a plane arranged along the first direction, so that when the second heating element 210 is in the closed state, the side of the first connecting part 212 abuts against the side of the abutment block 112, and the side of the second connecting part 213 can also contact the abutment block 112. The abutment surfaces are in surface-to-surface contact, which is beneficial to increase the contact area, improve the conductivity, and reduce the resistance.

[0059] In some embodiments, the heating coil 1000 further includes a limiting component 400, which is configured to abut corresponding surfaces of the first heating element 110 and the second heating element 210. This limiting component 400 can limit and correct the relative position of the first heating element 110 and the second heating element 210, forcibly guiding and constraining the corresponding mating surfaces of the first heating element 110 and the second heating element 210 to fit tightly against each other. Specifically, the limiting component 400 allows the side of the first connecting portion 212 to abut against the side of the abutting block 112, and the side of the second connecting portion 213 to also contact the abutting block 112, reducing the gap between the contact surfaces. This helps to improve the stability of the mating posture and relative position of the two sets of heating elements, ensuring a stable conductive heating circuit when they are in a closed state, and guaranteeing the normal operation of the induction heating process.

[0060] This embodiment adds a limiting component 400, which can further precisely limit and correct the mating surfaces of the first heating element 110 and the second heating element 210 based on the original structural positioning. This helps to offset the mating offset caused by equipment assembly errors, mechanical vibration and thermal deformation, ensuring that the mating surfaces of the heating elements are tightly fitted and abutted throughout the process, reducing local gaps, loose connections, misalignment and other situations. It further improves the reliability of electrical connection after the heating component is closed, reduces contact resistance and ineffective heat loss, stabilizes the distribution of the induction heating magnetic field, and avoids problems such as uneven local heating of the workpiece 2000 and fluctuations in heating efficiency caused by uneven mating gaps. It significantly improves the repeatability positioning accuracy of the equipment opening and closing, the operational stability and the consistency of the workpiece 2000 heating and processing.

[0061] like Figures 2-5As shown, in some embodiments, the limiting assembly 400 includes a limiting member 410 and a limiting drive member 420. The limiting member 410 is sleeved on the second connector 120 and the third connector 130, and the limiting member 410 is located between two adjacent sets of first heating elements 110; the limiting drive member 420 is disposed at one end of the second connector 120 and the third connector 130, and the limiting drive member 420 is configured to drive the second connector 120 and the third connector 130 to move along a first direction when the second heating assembly 200 is in the closed position, so that the corresponding first heating elements 110 abut against the second heating elements 210, and the two ends of the limiting member 410 abut against the two adjacent sets of first heating elements 110 and second heating elements 210, respectively. After the second heating component 200 rotates to the closed position, the limiting component 400 can drive the second connecting component 120 and the third connecting component 130 to move along the first direction as a whole, thereby driving the precise displacement and correction of each first heating component 110, so that the mating surfaces of the corresponding first heating component 110 and the second heating component 210 are tightly abutted. At the same time, the two ends of the limiting component 410 abut and cooperate with the two adjacent groups of first heating components 110 and second heating components 210 respectively, limiting and locking the spacing and relative position of each group of heating components, ensuring that all corresponding heating components are in a regular posture and fit in place, stably constructing a complete conductive heating circuit, and ensuring the reliable operation of the electromagnetic induction heating process.

[0062] The limiting component 400 adopts a structure composed of a limiting member 410 and a limiting drive member 420. The limiting drive member 420 drives the second connecting member 120 and the third connecting member 130 to move precisely along the first direction. This can actively compensate for assembly gaps, movement gaps, and positional deviations caused by thermal deformation, so as to ensure that the first heating member 110 and the second heating member 210 of each group are fully fitted and abutted, improving the working conditions such as loose connection, excessive gap, and uneven fit. At the same time, the limiting member 410 arranged between adjacent heating members can limit the spacing and correct the posture of each group of heating units, constrain the relative position of adjacent heating members, weaken the offset and misalignment of a single group of heating members, and improve the fit consistency of multiple groups of heating units. This structure employs a dual limiting method combining active displacement clamping and passive spacing limiting. This improves the alignment accuracy and conductive contact stability of the heating component in the closed state, reduces contact resistance and localized heat loss, and makes the overall induced magnetic field distribution more uniform. It optimizes the processing problems of localized overheating and uneven heating of the workpiece 2000, effectively improves the repeatability and operational stability of the equipment during multiple opening and closing actions, and is suitable for long-term, continuous, and large-batch workpiece 2000 heating operations. The structure has strong linkage and excellent limiting effect, and has high practical application value and adaptability to working conditions.

[0063] Optionally, the limiting drive 420 can be a linear drive module, which drives the second connector 120 and the third connector 130 to move linearly in the first direction to achieve the limiting function. In another embodiment, the limiting drive 420 can also be a rotary drive combined with a lead screw and nut module, which drives the lead screw to rotate, thereby driving the nut to move in the first direction, and the second connector 120 and the third connector 130 are connected to the nut.

[0064] In addition, the heating coil 1000 includes a frame 800, and a limiting drive 420 is disposed on the frame 800.

[0065] like Figures 4-6 As shown, in some embodiments, the heating coil 1000 further includes a cooling component 500. The cooling component 500 is configured to cool the first heating component 100 and the second heating component 200. During the heating operation of the heating coil 1000, including the heating of the workpiece 2000 and during continuous operation, the cooling component 500 continuously delivers a cooling medium to the first heating component 100 and the second heating component 200, continuously removing the heat accumulated during the operation of the heating components, continuously cooling and dissipating heat from the two sets of heating components, easing the heating state of the heating components, and maintaining the heating components within a suitable operating temperature range, adapting to the continuous opening and closing heating operation of the heating coil 1000.

[0066] By adding a cooling component 500, the first heating component 100 and the second heating component 200 can be continuously cooled and vented during operation. This mitigates the heat buildup caused by long-term high-frequency operation of the heating components, reduces the deformation and performance changes caused by temperature increases, and maintains the stability of the structural form and conductivity of the heating components. This allows the heating coil 1000 to maintain a relatively stable operating state during continuous operation. Simultaneously, the continuous cooling and heat dissipation can mitigate the impact of high-temperature environments on the heating components, connectors, and limiting structures, extending the service life of each structural component, reducing operational fluctuations caused by high temperatures, gradually improving the adaptability of the heating equipment for continuous operation, and optimizing the processing consistency during the batch heating of 2000 workpieces.

[0067] In some embodiments, the first heating element 110 includes a metal tube, the second heating element 210 includes a metal tube, and the cooling assembly 500 includes multiple sets of connecting pipes 510. The connecting pipes 510 are connected between two adjacent sets of first heating elements 110 or second heating elements 210. The two adjacent sets of connecting pipes 510 connected to the first heating element 110 are respectively connected to positions near the two ends of the metal tube. The connecting pipes 510 located at both ends along the first direction are used to connect to an external refrigerant source so that the refrigerant flows sequentially through each set of metal tubes in the multiple sets of first heating elements 110. The two adjacent sets of connecting pipes 510 connected to the second heating element 210 are respectively connected to positions near the two ends of the metal tube. The connecting pipes 510 located at both ends along the first direction are used to connect to an external refrigerant source so that the refrigerant flows sequentially through each set of metal tubes in the multiple sets of second heating elements 210.

[0068] The connecting pipes 510 arranged at both ends in the first direction can be connected to an external refrigerant source, so that the refrigerant can flow in series inside the metal pipes of the multiple sets of first heating elements 110, forming a cooling circuit that flows through each stage. Similarly, the multiple connecting pipes 510 arranged on the side of the second heating element 210 are connected in series to the metal pipes of each set of second heating elements 210. After the connecting pipes 510 at both ends are connected to an external refrigerant source, the refrigerant can flow in series through each metal pipe inside the multiple sets of second heating elements 210. Relying on the heat exchange between the metal pipes and the refrigerant, the heat generated during the operation of the first heating component 100 and the second heating element 210 is continuously removed, thereby realizing the cyclic cooling and temperature reduction of the entire heating coil 1000.

[0069] For example, the external refrigerant can be distilled water, etc. The refrigerant flows in the following direction: the external refrigerant flows into the first heating element 110 through the first set of connecting pipes 510 located at one end, flows into the first heating element 110 to another set of connecting pipes 510 connected to the other end of the heating element, and then flows into the second set of first heating elements 110 connected thereto. After passing through the second set of first heating elements 110, it flows into the connecting pipe 510 connected to the other end of the second set of first heating elements 110. This S-shaped flow circulates through multiple sets of first heating elements 110 until the last set of first heating elements 110, and then flows back to the external refrigerant recovery port. The flow pattern of the refrigerant in the second heating element 210 is the same as described above, and will not be repeated here.

[0070] Optionally, the refrigerant can flow in the same direction or in opposite directions in the first heating component 100 and the second heating component 200. This embodiment does not limit this.

[0071] The heating coil 1000 employs a structure consisting of a metal tubular heating element and a cooling assembly 500 connected in series with a connecting pipe 510. This allows multiple sets of first heating elements 110 and multiple sets of second heating elements 210 to form independent series cooling channels. The refrigerant can flow orderly through each set of heating metal tubes, enabling each heating unit to participate in heat exchange and improving the overall heat dissipation coverage of the heating assembly. The tiered refrigerant circulation method can continuously remove the heat energy accumulated by each heating element during operation, mitigate the temperature rise differences between multiple heating units, reduce the phenomenon of localized heat accumulation in a single heating element, and make the operating temperatures of each heating element more similar. This integrated series cooling structure is compatible with the layout of multiple heating elements arranged in an array. The flow channel structure is regular and the pipeline layout is simple, which facilitates connection with external refrigerant sources. It can adapt to the working conditions of long-term continuous heating of the equipment, mitigate the impact of high temperature conditions on the conductivity and structural morphology of the heating elements, make the working state of multiple heating units more consistent, further optimize the temperature consistency of batch workpieces during the heating process, and also slow down the aging rate of components caused by high temperature conditions, thereby improving the overall adaptability and service life of the equipment.

[0072] like Figure 1 , Figure 2 as well as Figure 6 As shown, in some embodiments, the heating coil 1000 further includes a driving component 600. The output end of the driving component 600 is connected to the second connector 120. The driving component 600 is configured to drive the second connector 120 to rotate relative to the first connector 220 by driving the second connector 120 to move. The driving component 600 can output corresponding power to drive the second connector 120 to move. Relying on the motion linkage of the second connector 120, the entire second heating component 200 is driven to rotate relative to the first connector 220, thereby realizing the opening and closing switching between the second heating component 200 and the first heating component 100, and coordinating the orderly development of the workpiece 2000 loading and unloading process and the electromagnetic induction heating process.

[0073] The heating coil 1000 incorporates a drive assembly 600 that connects to the second connector 120. This drive assembly 600 drives the second connector 120 to rotate and open / close the second heating assembly 200. Utilizing the interconnected nature of the connector, multiple sets of second heating elements 210 are driven to rotate synchronously, ensuring that the opening / closing sequence and movement of each heating unit are synchronized. This drive layout achieves overall transmission using the existing connector structure, eliminating the need for separate power structures for individual second heating elements 210. This simplifies the overall power layout and assembly structure of the equipment, reducing the number of components. Furthermore, the integrated, interconnected drive system allows for smoother and more regular opening and closing of the heating assembly, mitigating alignment deviations caused by asynchronous movement of multiple heating elements. This optimizes the fit and electrical connection after the heating assembly is closed, adapting to automated continuous operation modes and improving the smoothness and adaptability of the equipment.

[0074] Optionally, the drive assembly 600 includes a linear drive cylinder, which is rotatably connected to the frame 800. The output end of the linear drive cylinder is hinged to the first connector 220, so that the linear drive cylinder can generate adaptive rotation compensation as the opening and closing swing angle of the second heating assembly 200 changes, thus offsetting the angle interference and position deviation during the extension and retraction stroke. The cylinder output end is flexibly connected to the first connector 220 through a hinge joint. Relying on the overall linkage characteristics of the first connector 220, the linear extension and retraction power is converted into the rotational swing torque of the second heating assembly 200, thereby driving multiple sets of second heating elements 210 to synchronously complete the opening and closing rotation action, which is suitable for the periodic opening and closing operation requirements of the heating coil 1000. The overall assembly structure is simple, occupies little space, and is suitable for various rack installation layouts.

[0075] In another embodiment, the drive assembly 600 can be any one of a servo motor, stepper motor, or rotary cylinder. The drive assembly 600 is fixedly mounted on the side of the first connector 220. The power output shaft of the drive assembly 600 is rigidly fixed to the end of the second connector 120 via a coupling, adapter flange, or eccentric transmission block. The output shaft of the drive assembly is aligned with the shaft axis of the second connector 120. A rotary bearing is installed between the second connector 120 and the frame, allowing the second connector 120 to rotate stably relative to the frame and the first connector 220, reducing frictional resistance and jamming during rotation. After receiving the control signal, the drive component 600 outputs rotational power, which can directly drive the second connector 120 to rotate around its own axis at a fixed angle. Through the overall linkage of the second connector 120, all the second heating elements 210 are synchronously driven to complete the opening and closing swing at a unified angle. The drive component 600 can be matched with an angle encoder and a limit sensor structure to calibrate the rotation stroke and opening and closing points, adapt to the equipment's automated control logic, and has a simple overall structure, short transmission link, and stable action response. It can adapt to the working requirements of synchronous opening and closing of multiple heating units, and is easy to adapt to industrial assembly and automation transformation.

[0076] like Figure 6 As shown, in some embodiments, the heating coil 1000 further includes a heat insulation component 700. When the first heating component 100 and the second heating component 200 are in the closed position, the heat insulation component 700 is sleeved on the first heating component 100 and the second heating component 200. The heat insulation component 700 is configured to keep the first heating component 100 and the second heating component 200 warm during heating. During the electromagnetic induction heating of the workpiece 2000 by the heating components, the heat insulation component 700 can buffer and block the heat flow around the heating area, slow down the rate of heat diffusion from the heating area to the external environment, and maintain the internal temperature of the heating space 300, thus cooperating with the heating components to complete the constant temperature heating operation of the workpiece 2000.

[0077] The insulation component 700 slows down heat loss in the heating area during the closing operation of the heating assembly, reducing ineffective heat loss and making the internal temperature fluctuation of the heating space 300 more gradual. This allows the workpiece 2000 to complete the heating process in a relatively stable temperature environment. The reduced heat loss decreases power output fluctuations of the heating assembly, mitigating localized heating differences caused by rapid heat loss and improving the overall uniformity and consistency of heating for the workpiece 2000. Simultaneously, the stable internal temperature environment reduces the need for continuous high-load operation to compensate for heat loss, mitigating performance degradation caused by long-term fluctuating operation of the heating assembly. This adapts the equipment to scenarios requiring precise heating and long-term continuous heating of the workpiece 2000, further enhancing its adaptability and processing stability.

[0078] Optionally, the insulation component 700 is insulation cotton, which is wrapped around the outer periphery of the first heating component 100 and the second heating component 200.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heating coil, characterized in that, The heating coil includes: A first heating component (100) and a second heating component (200) are rotatably connected, and the first heating component (100) and the second heating component (200) together form a heating space (300). The relative positions between the first heating component (100) and the second heating component (200) have a closed position and an open position; When the first heating component (100) and the second heating component (200) are in the closed position, the first heating component (100) and the second heating component (200) together form the heating space (300), and the first heating component (100) and the second heating component (200) are energized to heat the workpiece (2000). When the first heating component (100) and the second heating component (200) are in the open position, the first heating component (100) and the second heating component (200) are away from each other on the side away from the rotatable connection, so as to open the heating space (300) for placing the workpiece (2000) into the heating space (300) or removing the workpiece (2000) from the heating space (300).

2. The heating coil according to claim 1, characterized in that, The first heating component (100) is fixedly disposed, and the second heating component (200) is rotatably disposed relative to the first heating component (100); And / or, the first heating component (100) and the second heating component (200) are energized to generate a magnetic field to heat the workpiece (2000) by electromagnetic induction. And / or, the first heating assembly (100) includes: Multiple sets of first heating elements (110) are arranged parallel to each other and spaced apart along a first direction; The second heating component (200) includes: Multiple sets of second heating elements (210) are arranged parallel to each other and spaced apart along the first direction. The second heating elements (210) are rotatably connected to the first heating elements (110). The multiple sets of second heating elements (210) are arranged one-to-one with the multiple sets of first heating elements (110). When the first heating component (100) and the second heating component (200) are in the closed position, the end of the second heating element (210) that is close to and away from the rotating shaft of the second heating element (210) abuts against the two ends of the first heating element (110) in a corresponding manner, so that the first heating element (110) and the second heating element (210) are electrically connected in the energized state.

3. The heating coil according to claim 2, characterized in that, The second heating assembly (200) also includes: The first connector (220) is arranged along the first direction and simultaneously passes through multiple sets of the second heating elements (210). The first connector (220) is used to drive the multiple sets of the second heating elements (210) to rotate synchronously.

4. The heating coil according to claim 3, characterized in that, The first heating assembly (100) further includes: The second connector (120) is disposed near one end of the plurality of first heating elements (110) and passes through the plurality of first heating elements (110); and The third connector (130) is disposed near the other end of the first heating element (110) and is simultaneously inserted through multiple sets of the first heating elements (110). The second heating element (210) is inserted through the third connector (130) at one end near the first connector (220). The second heating elements (210) and the first heating elements (110) are disposed in a one-to-one correspondence and abut against each other on opposite sides along the first direction.

5. The heating coil according to claim 4, characterized in that, The second heating element (210) includes: First heating section (211); A first connecting portion (212) is connected to one end of the first heating portion (211), the first connecting portion (212) is sleeved on the third connecting member (130), and the first connecting portion (212) can abut against the side of the first heating member (110) along the first direction; and The second connecting part (213) is connected to the other end of the first heating part (211). The second connecting part (213) is constructed with a mating groove (2131). When the second heating element (210) is in the closed position, the mating groove (2131) overlaps with the second connecting element (120) so that the second connecting part (213) can abut against the side of the first heating element (110) along the first direction.

6. The heating coil according to claim 4, characterized in that, The heating coil also includes: A limiting component (400) is configured to cause the corresponding surfaces of the first heating element (110) and the second heating element (210) to abut.

7. The heating coil according to claim 6, characterized in that, The limiting component (400) includes: A limiting member (410) is sleeved on the second connecting member (120) and the third connecting member (130), the limiting member (410) being located between two adjacent sets of the first heating elements (110); and A limiting drive member (420) is disposed at one end of the second connector (120) and the third connector (130). The limiting drive member (420) is configured to drive the second connector (120) and the third connector (130) to move along the first direction when the second heating assembly (200) is in the closed position, so that the first heating element (110) and the second heating element (210) are respectively abutted. The two ends of the limiting member (410) abut against the first heating element (110) and the second heating element (210) of two adjacent groups respectively.

8. The heating coil according to any one of claims 2-7, characterized in that, The heating coil also includes: A cooling assembly (500) configured to cool the first heating assembly (100) and the second heating assembly (200).

9. The heating coil according to claim 8, characterized in that, The first heating element (110) includes a metal tube, the second heating element (210) includes a metal tube, and the cooling assembly (500) includes: Multiple sets of connecting pipes (510) are connected between two adjacent sets of first heating elements (110) or second heating elements (210). The two adjacent sets of connecting pipes (510) connected to the first heating elements (110) are respectively connected to the two ends near the metal pipe. The connecting pipes (510) located at both ends along the first direction are used to connect to an external refrigerant source so that the refrigerant flows through each set of metal pipes in the multiple sets of first heating elements (110). The two adjacent sets of connecting pipes (510) connected to the second heating element (210) are respectively connected to the positions near the two ends of the metal pipe. The connecting pipes (510) located at both ends along the first direction are used to connect to an external refrigerant source so that the refrigerant flows through each set of the metal pipes in sequence in the multiple sets of the second heating elements (210).

10. The heating coil according to any one of claims 1-7, characterized in that, The heating coil also includes: A drive assembly (600) is provided, the output of which is connected to the second heating assembly (200). The drive assembly (600) is configured to drive the second heating assembly (200) to rotate relative to the first heating assembly (100). And / or, when the first heating component (100) and the second heating component (200) are in the closed position, the insulation component (700) is sleeved on the first heating component (100) and the second heating component (200), and the insulation component (700) is configured to keep the first heating component (100) and the second heating component (200) warm when they are heated.

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