Heating device, manufacturing method thereof and heating method of mold

Abstract

The invention discloses a heating device, a manufacturing method of the heating device and a heating method of a mold, and relates to the technical field of material forming. The method comprises the steps that according to a three-dimensional model of a target mold, initial geometric parameters of an induction coil are determined; according to a temperature uniformity target of the target mold in the heating process, the initial geometric parameters are adjusted, and target geometric parameters of the induction coil are obtained; according to the target geometric parameters, an induction coil and a shape maintaining tool corresponding to the induction coil are manufactured; an induction coil is installed on the shape maintaining tool, and a heating device is obtained; when the heating device heats the target mold, the shape maintaining tool is used for fixing the relative position between the induction coil and the target mold, and the induction coil is used for heating the target mold when powered on. According to the manufacturing method of the heating device, the temperature uniformity in the heating process of the target mold can be effectively improved, and therefore the curing forming effect of a composite material in the target mold is improved.

Description

Technical Field

[0001] This application relates to the field of material forming technology, and in particular to a heating device and its manufacturing method, and a method for heating a mold. Background Technology

[0002] In the process of curing and molding composite materials, ensuring temperature uniformity during the heating of the mold is a key factor in guaranteeing the quality and production efficiency of the composite material, including its degree of curing, residual stress, and surface quality.

[0003] In related technologies, for metal molds, electromagnetic induction can be used to heat the mold in order to improve the heating efficiency. However, existing electromagnetic induction heating devices simply place the induction coil at one end of the mold or inside the induction coil. However, this arrangement of the induction coil can only heat the mold, but cannot guarantee the temperature uniformity of the mold during the heating process, thus affecting the curing and molding effect of the composite material inside the mold. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solutions, nor is it intended to determine the scope of protection of the claimed technical solutions.

[0005] In a first aspect, this application provides a method for manufacturing a heating device, wherein the heating device is used to heat a target mold, the heating device includes an induction coil and a shaping fixture, and the manufacturing method includes: Based on the three-dimensional model of the target mold, the initial geometric parameters of the induction coil are determined. The induction coil is used to heat the target mold when energized. Based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil; Based on the target geometric parameters, the induction coil of the heating device and the corresponding shape tooling of the induction coil are manufactured. The shape tooling is used to fix the relative position between the induction coil and the target mold when the target mold is heated by the heating device. The induction coil is installed on a U-shaped fixture to obtain a heating device.

[0006] The method for manufacturing the heating device in this application determines the initial geometric parameters of the induction coil using a three-dimensional model of the target mold. This ensures that the shape of the induction coil, manufactured based on the initial geometric parameters, matches the target mold, guaranteeing that the magnetic field generated by the induction coil when energized can effectively act on all parts of the mold, thereby ensuring that the induction coil can heat the entire target mold. Furthermore, by adjusting the initial geometric parameters according to the temperature uniformity target of the target mold during the heating process, the target geometric parameters corresponding to the induction coil are obtained. Since the target geometric parameters are adjusted based on the temperature uniformity target, the induction coil manufactured based on the target geometric parameters can effectively improve temperature uniformity when energized. This not only ensures that the generated magnetic field can effectively act on all parts of the mold but also improves the temperature uniformity of the target mold during the heating process, thereby further enhancing the heating effect on the target mold and improving the curing and molding effect of the composite material in the target mold.

[0007] By fabricating a three-dimensional tooling based on the target geometric parameters of the induction coil, the relative position between the induction coil and the target mold can be fixed during the heating process of the target mold. This prevents changes in the distance between the induction coil and the target mold from affecting the magnetic field acting on the target mold, and thus avoids affecting the heating effect on the target mold.

[0008] In some implementations, the initial geometric parameters are adjusted based on the target temperature uniformity of the target mold during the heating process to obtain the target geometric parameters of the induction coil, including: Based on the induction coil corresponding to the initial geometric parameters, the target mold is heated in a simulation to obtain the temperature uniformity of the target mold during the heating process. If the simulated temperature uniformity meets the temperature uniformity target, then the initial geometric parameters are determined as the target geometric parameters; If the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters are adjusted according to the temperature uniformity target, and the target mold is heated and simulated based on the induction coil corresponding to the adjusted initial geometric parameters until the simulated temperature uniformity meets the temperature uniformity target. The adjusted initial geometric parameters that satisfy the temperature uniformity target are determined as the target geometric parameters of the induction coil.

[0009] In some implementations, based on the induction coils corresponding to the initial geometric parameters, a heating simulation of the target mold is performed to obtain the simulated temperature uniformity of the target mold during the heating process, including: Heating simulation of the target mold is performed based on the induction coil corresponding to the initial geometric parameters; During the heating simulation, the thermal energy conversion parameters of the target mold are calculated based on the physical parameters of the target mold when the magnetic field generated by the induction coil acts on the target mold. Based on the thermal energy conversion parameters, the simulated temperature uniformity of the target mold during the heating process is obtained.

[0010] In some implementations, based on target geometric parameters, an induction coil and a corresponding shape-fitting fixture are fabricated, including: A three-dimensional model of the induction coil is generated based on the target geometric parameters; Based on the three-dimensional model of the induction coil, construct the induction coil; Based on the target geometric parameters and the three-dimensional model of the induction coil, a three-dimensional tooling is fabricated.

[0011] Secondly, this application proposes a heating device, which is manufactured according to the method of manufacturing a heating device according to any one of the above technical solutions.

[0012] In some embodiments, the heating device further includes: a plurality of first power sources, which are connected one-to-one with a plurality of coil regions of the induction coil.

[0013] In some embodiments, the heating device further includes a second power source, which includes multiple current output channels, each of which is connected to a corresponding coil region of the induction coil.

[0014] Thirdly, this application proposes a method for heating a mold, used to heat a target mold using a heating device as described in any of the above technical solutions, the heating method comprising: The shape-forming tooling based on the heating device installs the induction coil on the target mold and controls the induction coil of the heating device to be energized.

[0015] In some embodiments, the heating method further includes: Based on a preset acquisition frequency, multiple real-time temperatures of the target mold are acquired. The temperature change curve of the target mold is determined based on multiple real-time temperatures; Based on the real-time difference between the temperature change curve and the preset temperature change curve of the target mold, the control parameters of the induction coil are adjusted to match the temperature change curve with the preset temperature change curve.

[0016] Fourthly, this application proposes a method for manufacturing an induction coil for heating a target mold, comprising: Based on the three-dimensional model of the target mold, the initial geometric parameters of the induction coil are determined. The induction coil is used to heat the target mold when energized. Based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil; Based on the target geometry parameters, an induction coil is fabricated to heat the target mold. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of the target mold in the mold heating method of this application embodiment; Figure 2 This is a black and white line drawing of the three-dimensional structure of the target mold in the embodiments of this application; Figure 3 A schematic flowchart illustrating a method for manufacturing a heating device according to an embodiment of this application; Figure 4 This is a schematic diagram illustrating the process of adjusting the target geometric parameters of the induction coil in an embodiment of this application; Figure 5 This is a flowchart illustrating the heating simulation process of the target mold in an embodiment of this application. Figure 6 A flowchart illustrating the process of fabricating induction coils and shaped tooling based on target geometric parameters; Figure 7 This is a cross-sectional view of the heating device installed in the target mold in an embodiment of this application; Figure 8 This is a black and white line drawing of the individual three-dimensional structure of the shaped tooling in the embodiments of this application; Figure 9 This is a black and white line drawing of the three-dimensional structure of the shaped tooling when it is assembled into the target mold in the embodiments of this application; Figure 10 This is a schematic diagram of the process of conducting a heating test on a preset mold using the heating device according to an embodiment of this application; Figure 11 This is a schematic flowchart of a method for heating a mold according to an embodiment of this application; Figure 12 This is a schematic flowchart illustrating a method for manufacturing an induction coil for heating a target mold according to an embodiment of this application. Figure 13 This is a circuit diagram of the heating device heating the target mold in an embodiment of this application; Figure 14 To pass Figure 13The diagram shows a process flow diagram of the heating device used to cure the composite material.

[0018] Figure Labels 202 Temperature control unit, 204 Temperature sensor, 206 Target mold, 208 Induction coil, 210 High-frequency power supply, 300 Target mold, 302 Punch, 304 Die, 306 Cover plate, 308 Composite material, 310 Core mold, 312 Shape tooling, 314 Induction coil, 510 Determination unit, 520 Manufacturing unit, 530 Control unit, 600 Electronic equipment, 610 Memory, 620 Processor, 611 Computer program. Detailed Implementation

[0019] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0020] To better illustrate the embodiments of the heating device used for heating the target mold in this application, a schematic diagram of the target mold is first provided as an example. Please refer to [link / reference needed] for details. Figure 1 .from Figure 1As can be seen, the target mold 300 can specifically include a punch 302, a die 304, and a cover plate 306. The punch 302, die 304, and cover plate 306 can enclose a receiving space for accommodating the composite material 308, thereby placing the composite material 308 within the receiving space. The cover plate 306 connects the edges of the punch 302 and die 304, enabling the disassembly and installation of the punch 302 and die 304. Simultaneously, it also blocks the composite material 308 at the edge connection of the punch 302 and die 304, preventing the composite material 308 from overflowing outside the target mold 300 before curing. Then, by heating the target mold 300, the heat is transferred to the composite material 308 within the target mold 300, thus heating the composite material 308 within the receiving space. During the temperature rise of the composite material 308, the curing and molding process of the composite material 308 is achieved. In addition, the target mold 300 also includes a core mold 310, which is disposed inside the punch 302 to support the punch 302, prevent deformation of the punch 302, and ensure the stability of the shape of the punch 302, thereby ensuring the molding effect of the composite material 308. See the black and white line drawing of the three-dimensional structure of the target mold provided in this application embodiment. Figure 2 The figure clearly shows the overall shape, composition and internal cavity layout of the target mold, which can provide a structural reference basis for determining the initial geometric parameters of the induction coil and designing the three-dimensional tooling structure.

[0021] It should be noted that since the heating device provided in this application is designed based on the shape of the target mold, the heating device can be applied to target molds of various shapes. Therefore, the specific structure of the target mold to which the solution of this application is applicable is not limited to the structure described in the above embodiments, and can also be a mold with other structures.

[0022] Please see Figure 3 This is a flowchart illustrating a method for manufacturing a heating device according to an embodiment of this application. The method for manufacturing the heating device includes: S110, Determine the initial geometric parameters of the induction coil based on the three-dimensional model of the target mold.

[0023] The induction coil is used to heat the target mold when energized.

[0024] It should be noted that the heating device may include an induction coil and a manifold fixture. The fabrication of the heating device is essentially the fabrication process of the induction coil and the manifold fixture. The manifold fixture is used to fix the induction coil in place. The heating process of the target mold involves energizing the induction coil to generate a magnetic field. Under the influence of this magnetic field, the temperature of the metal target mold rises, thus heating the mold. The induction coil typically consists of multiple turns of spaced wire. Fixing the induction coil with the manifold fixture ensures the stability of the relative positions of the multiple turns of wire, preventing changes in the magnetic field distribution generated when the induction coil is energized, and thus avoiding any impact on the heating effect on the target mold. Simultaneously, the manifold fixture also serves to fix the relative position between the induction coil and the target mold, preventing changes in the distance between them from affecting the magnetic field acting on the target mold and thus ensuring effective heating.

[0025] Before fabricating the induction coil and the shaping fixture for the heating device, the initial geometric parameters of the induction coil can first be determined based on the three-dimensional model of the target mold. These initial geometric parameters characterize the shape of the induction coil and its relative position to the target mold. Specific shape parameters include, but are not limited to, the diameter, number of turns, and distance between adjacent wires of the induction coil. Relative position parameters include, but are not limited to, the distance between the induction coil and the target mold. Since the three-dimensional model of the target mold reflects its shape and other information, the initial geometric parameters of the induction coil determined using this model naturally reflect the shape of the target mold. This ensures that the shape of the induction coil matches the shape of the target mold, thereby ensuring that the magnetic field generated by the induction coil when energized can effectively act on the target mold, causing the temperature of the target mold to rise under the influence of the magnetic field. Clearly, compared to existing technologies that do not consider the shape compatibility between the induction coil and the target mold and simply place a fixed-shape induction coil at one end of various target molds for heating, this approach significantly improves the shape fit between the induction coil and the target mold, resulting in more effective heating and better uniformity of heating in all parts.

[0026] Then, based on the three-dimensional model of the target mold, parameters such as the shape and material of the target mold can be determined.

[0027] In some implementations, the three-dimensional model of the target mold can be created using three-dimensional modeling software based on the actual shape and material of the target mold, such as 3Ds Max, SolidWorks, and other three-dimensional modeling software.

[0028] Specifically, the shape features of the target mold can be determined based on its three-dimensional model. For example, the shape features of the target mold may include its surface shape, including the size of planes, the size and curvature of curved surfaces, and the angles between adjacent surfaces. Correspondingly, to ensure that the magnetic field generated by the induction coil when energized can act on the target mold, causing it to heat up under the influence of the magnetic field, the shape features of the induction coil can be set to match the shape features of the target mold. For example, the shape features of the induction coil can also be obtained by modeling based on the shape features of the target mold using three-dimensional modeling software.

[0029] In some implementations, based on the three-dimensional model of the target mold, the material characteristics of the target mold can be determined, i.e., the temperature change parameters of the target mold when it is within the magnetic field range can be determined. Based on the temperature change parameters, parameters such as the diameter of the induction coil, the number of turns, the distance between adjacent wires, the distance between the induction coil and the target mold, and the magnitude and frequency of the current flowing through the induction coil can be set. For example, the finite element software ABAQUS for engineering simulation can be used to simulate the magnetic field generated by the induction coil when it is energized. ABAQUS can combine the material characteristics of the target mold to simulate the heat conduction of the target mold under the action of the magnetic field, and then obtain data such as the distribution and intensity of the magnetic field acting on the target mold based on the heat conduction process. Based on the distribution and intensity of the magnetic field, initial geometric parameters such as the diameter of the induction coil, the number of turns, the distance between adjacent wires, and the distance between the induction coil and the target mold can be set.

[0030] S120, based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil.

[0031] It should be noted that the determination of the initial geometric parameters is to ensure that the magnetic field generated by the induction coil when it is energized can effectively act on all parts of the mold, thereby ensuring that the induction coil can heat the entire target mold.

[0032] In some examples, after obtaining the initial geometric parameters, the initial geometric parameters are adjusted according to the temperature uniformity target of the target mold during the heating process, thereby obtaining the target geometric parameters corresponding to the induction coil. In this way, when the induction coil based on the target geometric parameters is energized, it not only ensures that the generated magnetic field can effectively act on all parts of the mold, but also effectively improves the optimization effect of temperature uniformity, thereby further improving the heating effect on the target mold and thus improving the curing and molding effect of the composite material in the target mold. It can be understood that the target geometric parameters are obtained by adjusting the initial geometric parameters. Since the initial geometric parameters are used to characterize the shape parameters of the induction coil and the relative position parameters between the induction coil and the target mold, the target geometric parameters can also be used to characterize the shape parameters of the induction coil and the relative position parameters between the induction coil and the target mold, including but not limited to the adjusted diameter, number of turns, distance between adjacent wires, and distance between the induction coil and the target mold.

[0033] In some examples, please refer to Figure 4 This is a flowchart illustrating the process of adjusting the target geometric parameters of the induction coil in this embodiment of the application. Based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil. This can be achieved through the following steps: S122, based on the induction coil corresponding to the initial geometric parameters, the target mold is heated to simulate the temperature uniformity of the target mold during the heating process.

[0034] Specifically, the target mold can be simulated for heating based on the induction coil corresponding to the initial geometric parameters. This simulation allows for the determination of the temperature uniformity of the target mold during the heating process. By comparing the simulated temperature uniformity with the target temperature uniformity, it can be determined whether the temperature distribution of the target mold meets the optimization effect of the temperature uniformity target during the heating simulation.

[0035] In some examples, please refer to Figure 5 This is a flowchart illustrating the heating simulation process of the target mold in this embodiment of the application. Based on the induction coil corresponding to the initial geometric parameters, the target mold is simulated for heating to obtain the simulated temperature uniformity of the target mold during the heating process. This can be achieved through the following steps: S1222, based on the induction coil corresponding to the initial geometric parameters, performs heating simulation on the target mold.

[0036] For example, the heating process of the induction coil on the target mold can be simulated using simulation software. For instance, the heating process of the induction coil on the target mold can be simulated using the finite element software ABAQUS for engineering simulation. ABAQUS can simulate the heat conduction of the target mold under the action of a magnetic field.

[0037] S1224, during the heating simulation process, based on the physical parameters of the target mold, calculate the thermal energy conversion parameters of the target mold when the magnetic field generated by the induction coil acts on the target mold.

[0038] Specifically, in the process of obtaining the simulated temperature uniformity of the target mold, the thermal energy conversion parameters of the target mold can be calculated based on the physical parameters of the target mold when the magnetic field generated by the induction coil acts on the target mold during the heating simulation.

[0039] For example, the physical parameters of the target mold may include the material of the target mold, the corresponding electromagnetic properties, thermal properties, and other parameters. During the heating simulation, the simulation software can calculate the magnitude and distribution of the magnetic field generated by the induction coil based on initial geometric parameters such as the diameter of the induction coil, the number of turns, and the distance between adjacent coils. Furthermore, based on the distribution of the induction coil on the target mold and the distance between it and the target mold, combined with the material of the target mold and the corresponding electromagnetic and thermal properties, the thermal energy conversion parameters of the target mold when the magnetic field generated by the induction coil acts on the target mold can be calculated.

[0040] S1226, based on the thermal energy conversion parameters, obtain the simulated temperature uniformity of the target mold during the heating process.

[0041] Specifically, after obtaining the thermal energy conversion parameters of the target mold, the temperature distribution of each part of the target mold can be calculated based on the thermal energy conversion parameters when the magnetic field generated by the induction coil acts on the target mold and the target mold converts magnetic energy into thermal energy. Then, the simulation temperature uniformity of the target mold can be determined based on the temperature distribution of each part of the target mold.

[0042] For example, the thermal energy conversion parameters of the target mold can include parameters such as eddy current distribution and Joule heating when the target mold is within the magnetic field range. Eddy current distribution refers to the physical phenomenon of vortex-like induced currents generated inside the target mold when it is within the magnetic field range. Joule heating is the physical phenomenon of heat generated when current passes through the target mold due to its own resistance. Under the action of high-frequency alternating current of a certain frequency and power, the heat generated by the target mold is constant. Using the finite element software ABAQUS, based on the material, thickness, and other relevant parameters of the target mold, the eddy current distribution and Joule heating of the target mold when it is within the magnetic field range can be calculated. Thus, based on the thermal energy conversion parameters such as eddy current distribution and Joule heating of the target mold, the process of thermal energy conversion of the target mold under the action of the magnetic field of the induction coil can be obtained, thereby obtaining the temperature distribution of various parts of the target mold. Furthermore, based on the temperature distribution of various parts of the target mold, the simulated temperature uniformity of the target mold can be determined. If the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters of the induction coil can be adjusted, and the heating simulation can be performed again until the simulated temperature uniformity meets the temperature uniformity target.

[0043] In summary, by calculating the thermal energy conversion parameters of the induction coil acting on the target mold under energized conditions based on the physical parameters of the target mold during the heating simulation, the temperature uniformity of the target mold under energized conditions can be obtained. Furthermore, if the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters of the induction coil can be adjusted, and the heating simulation can be performed again until the simulated temperature uniformity meets the temperature uniformity target.

[0044] S124, If the simulated temperature uniformity meets the temperature uniformity target, then the initial geometric parameters are determined as the target geometric parameters.

[0045] Specifically, after comparing the simulated temperature uniformity of the target mold with the temperature uniformity target, if the simulated temperature uniformity meets the temperature uniformity target, the initial geometric parameters of the current induction coil can be determined as the target geometric parameters, and then the fabrication of the induction coil can be guided by the target geometric parameters.

[0046] S126, If the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters are adjusted according to the temperature uniformity target, and the target mold is heated and simulated based on the induction coil corresponding to the adjusted initial geometric parameters until the simulated temperature uniformity meets the temperature uniformity target. Specifically, after performing a heating simulation on the target mold to obtain the simulated temperature uniformity of the target mold during the heating process, if the simulated temperature uniformity of the target mold does not meet the temperature uniformity target, the initial geometric parameters can be adjusted according to the temperature uniformity target. Then, the target mold can be heated and simulated again based on the induction coil corresponding to the adjusted initial geometric parameters to obtain the simulated temperature uniformity.

[0047] In other words, after each adjustment of the initial geometric parameters, the target mold is simulated for heating again using the induction coil corresponding to the adjusted initial geometric parameters. The simulated temperature uniformity of the target mold is then obtained again, and it is determined whether the current simulated temperature uniformity meets the temperature uniformity target. That is, after each adjustment of the initial geometric parameters, during the heating simulation, it is determined whether the simulated temperature uniformity corresponding to the current initial geometric parameters meets the temperature uniformity target. Once the simulated temperature uniformity corresponding to the current adjusted initial geometric parameters meets the temperature uniformity target, there is no need to adjust the initial geometric parameters again.

[0048] For example, the heating process of the target mold by the induction coil is simulated using the finite element software ABAQUS for engineering simulation. ABAQUS can simulate the heat conduction of the target mold under the action of a magnetic field. ABAQUS uses a genetic algorithm to analyze the heat conduction process of the target mold during the simulation, and optimizes the magnetic field strength and distribution generated by the induction coil by combining the temperature uniformity during the heating process of the target mold. Specifically, the genetic algorithm is an optimization algorithm that simulates the biological evolution process. Through operations such as selection, crossover, and mutation, it searches for the optimal solution in the solution space to optimize the magnetic field strength and distribution. Then, based on the optimized magnetic field strength and distribution, the initial geometric parameters such as the diameter of the induction coil, the number of turns, the distance between the induction coil and the target mold, and the magnitude and frequency of the current flowing into the induction coil are adjusted until the simulated temperature uniformity corresponding to the adjusted initial geometric parameters meets the temperature uniformity target.

[0049] S128 determines the adjusted initial geometric parameters that satisfy the temperature uniformity target as the target geometric parameters of the induction coil.

[0050] Specifically, after adjusting the initial geometric parameters once or multiple times, when the simulated temperature uniformity of the target mold obtained by heating simulation meets the temperature uniformity target, the initial geometric parameters corresponding to the simulated temperature uniformity that meets the temperature uniformity target can be determined as the target geometric parameters.

[0051] In summary, by simulating the heating of the target mold using an induction coil based on the initial geometric parameters, the simulated temperature uniformity of the target mold is obtained. When the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters are adjusted. After multiple adjustments, the initial geometric parameters that meet the temperature uniformity target are determined as the target geometric parameters. Thus, when the induction coil based on the target geometric parameters is energized, it not only ensures that the generated magnetic field can effectively act on all parts of the mold, but also effectively improves the optimization effect corresponding to the temperature uniformity target, thereby further improving the heating effect on the target mold and thus improving the curing and molding effect of the composite material in the target mold.

[0052] S130, based on the target geometric parameters, fabricate the induction coil of the heating device and the corresponding shaped tooling for the induction coil.

[0053] The formwork fixture is used to fix the relative position between the induction coil and the target mold when the target mold is heated by the heating device.

[0054] After obtaining the target geometric parameters, an induction coil can be fabricated based on these parameters. In this way, the fabricated induction coil can effectively improve the temperature uniformity of the target mold during the heating process.

[0055] In some examples, S130 can be implemented through the following steps; please refer to [link / reference needed]. Figure 6 This is a flowchart illustrating the process of fabricating an induction coil and a three-dimensional tooling based on the target geometric parameters. Specifically, it can be achieved through the following steps: S1301, Generate a three-dimensional model of the induction coil based on the target geometric parameters; Specifically, after obtaining the target geometric parameters of the induction coil, the induction coil can be fabricated based on these parameters. Specifically, firstly, a three-dimensional model of the induction coil can be generated based on the target geometric parameters. For example, relevant 3D modeling software, such as 3ds Max or SolidWorks, can be used. The target geometric parameters of the induction coil can be input into these 3D modeling software programs, which can then process the target geometric parameters to obtain the three-dimensional model of the induction coil.

[0056] S1302, Based on the three-dimensional model of the induction coil, the induction coil is manufactured.

[0057] Specifically, the induction coil is fabricated based on a three-dimensional model. It can be understood that the three-dimensional model of the induction coil provides information such as the number of turns, diameter, and arrangement of the wires. These characteristics are then used to fabricate the induction coil.

[0058] For example, relevant production equipment can be used to manufacture the induction coil. The target geometric parameters are input into the production equipment, and the production equipment can then manufacture the induction coil based on the target geometric parameters. Alternatively, the induction coil can also be manufactured manually according to the target geometric parameters.

[0059] S1303, based on the target geometric parameters and the three-dimensional model of the induction coil, a three-dimensional tooling is made.

[0060] Specifically, based on the target geometric parameters of the induction coil and its three-dimensional model, a three-dimensional fixture can be fabricated to fix the induction coil in place. This ensures the stability of the relative positions between the multiple turns of the induction coil's wires, thereby preventing changes in the magnetic field distribution generated when the induction coil is energized, and thus avoiding any impact on the heating effect on the target mold.

[0061] When fabricating the three-dimensional tooling based on the target geometric parameters and the three-dimensional model of the induction coil in S1303, the specific fabrication process is as follows: First, the three-dimensional curved surface data of the target mold and the simulated and optimized spatial position of the coil are used to complete the design of the three-dimensional structure, so that the shape of the tooling fits tightly with the mold, and the coil is set with precise positioning grooves and support structures; high-performance engineering plastics, mica composite materials or laminated composite materials that can withstand high temperatures above 200°C for a long time, have high insulation strength and mechanical strength and are easy to process are selected as tooling materials; the blank cutting, reference surface finishing and rough milling of the shape are completed in sequence, and then the U-shaped positioning groove and through hole array are processed based on the coil path data. Finally, high temperature resistant insulating and heat insulation layers such as silicone rubber plate, ceramic fiber paper, and mica paper are added to the mating surface of the tooling and the mold to complete the fabrication of the three-dimensional tooling.

[0062] The process of assembling the shaped tooling to the target mold is as follows: First, thoroughly remove oil, rust, and old mold release agent from the mold surface, and remove sharp protrusions and burrs to ensure a clean and flat surface; then, pre-embed the induction coil into the positioning structure of the shaped tooling, and confirm that the coil lead wire and sensor lead wire are intact; finally, connect and fix the shaped tooling to the mold slider, and slide the tooling into the predetermined position along the axial direction with the help of the mold's own guide rail, thus completing the assembly of the tooling and the mold.

[0063] For example, please refer to Figure 7This is a cross-sectional view of the heating device installed on the target mold in an embodiment of this application. The shaped tooling 312 is installed on the outside of the target mold 300. It can be understood that since the target geometric parameters and three-dimensional model of the induction coil 314 are determined based on the three-dimensional model of the target mold 300, the target geometric parameters and three-dimensional model of the induction coil 314 match the shape of the target mold 300. Correspondingly, the shaped tooling 312 is made based on the target geometric parameters and three-dimensional model of the induction coil 314; that is, the shape of the shaped tooling 312 matches the shape of the induction coil 314, and therefore the shape of the shaped tooling 312 matches the shape of the target mold 300.

[0064] Specifically, the shaped tooling 312 can be a plate-like structure that matches the shape of the target mold. The induction coil 314 can be bonded to the shaped tooling 312. This shaped tooling 312 also helps to fix the induction coil 314, ensuring the stability of the relative position between the multiple turns of the induction coil 314's wires. Furthermore, the shaped tooling 312 can be made of heat-insulating material. When the shaped tooling 312 is installed on the target mold 300, it can insulate the target mold 300, preventing excessive heat dissipation and ensuring the curing effect of the composite material 308 within the target mold 300. Simultaneously, the shaped tooling 312 eliminates the need for direct contact between the induction coil 314 and the target mold 300, effectively reducing wear and tear on the target mold 300. In case of a malfunction, the induction coil 314 can be repaired and replaced directly without altering the target mold 300. The schematic diagram of the individual three-dimensional structure of the shape-forming tooling provided in this application embodiment is shown in black and white lines. Figure 8 It visually presents the outline of the shaped tooling, the coil positioning groove, the support structure, and the assembly reference surface, demonstrating the adaptability of the shaped tooling to the induction coil and the target mold. For a three-dimensional black-and-white line drawing of the shaped tooling assembled with the target mold according to the embodiments of this application, please refer to... Figure 9 It clearly demonstrates the fitting relationship between the shaped tooling and the target mold, the placement of the induction coil, and the overall assembly form, which can intuitively show the cooperative structure between the heating device and the target mold.

[0065] S140, the induction coil is installed on the V-shaped fixture to obtain the heating device.

[0066] After the induction coil and the shaped fixture are fabricated, the induction coil can be installed into the shaped fixture, thus completing the fabrication of the heating device. Please refer to [link / reference needed]. Figure 7The 312 tooling can be a plate-shaped structure that matches the shape of the target mold. The induction coil can be attached to the 312 tooling by adhesive bonding. In this way, the 312 tooling can also fix the induction coil and ensure the stability of the relative position between the multiple turns of the induction coil wire.

[0067] In summary, the method for manufacturing the heating device of this application determines the initial geometric parameters of the induction coil using a three-dimensional model of the target mold. This ensures that the shape of the induction coil manufactured based on the initial geometric parameters matches the target mold, thereby guaranteeing that the magnetic field generated by the induction coil when energized can effectively act on all parts of the mold, thus ensuring that the induction coil can heat the entire target mold. Furthermore, by adjusting the initial geometric parameters according to the temperature uniformity target of the target mold during the heating process, the target geometric parameters corresponding to the induction coil are obtained. In this way, the induction coil manufactured based on the target geometric parameters can effectively improve the temperature uniformity when energized. This, while ensuring that the generated magnetic field can effectively act on all parts of the mold, improves the temperature uniformity of the target mold during the heating process, thereby further improving the heating effect on the target mold and thus enhancing the curing and molding effect of the composite material in the target mold.

[0068] By fabricating a three-dimensional tooling based on the target geometric parameters of the induction coil, the relative position between the induction coil and the target mold can be fixed during the heating process of the target mold. This prevents changes in the distance between the induction coil and the target mold from affecting the magnetic field acting on the target mold, and thus avoids affecting the heating effect on the target mold.

[0069] In some examples, please refer to Figure 10 This is a schematic diagram illustrating the process of conducting a heating test on a preset mold using the heating device according to an embodiment of this application; the method for manufacturing the heating device further includes: S710, based on the heating device, a heating test is performed on a preset mold, wherein the structural parameters of the preset mold are the same as the structural parameters of the target mold; Specifically, after the induction coil and the shaped tooling are fabricated, a heating test can be conducted on the preset mold based on the fabricated induction coil and the shaped tooling. Based on the results of the heating test, multiple coil regions of the induction coil and the current parameters corresponding to each coil region can be set. The structural parameters of the preset mold are the same as those of the target mold.

[0070] S720 acquires the temperature transfer parameters of the preset mold during the heating test; Specifically, during the heating test of the preset mold, the temperature transfer parameters of the preset mold can be obtained. The temperature transfer parameters can be used to characterize the rate of temperature change during the temperature rise of the preset mold. That is, through the temperature transfer parameters, the rate of temperature rise of each heating area during the temperature rise of the preset mold can be understood. Then, according to the different temperature transfer parameters of each heating area, the induction coil is divided into coil areas corresponding to each heating area, and the current parameters corresponding to each coil area are set.

[0071] For example, to optimize temperature uniformity, during the heating test of the preset mold, the temperature change of each heating area of ​​the preset mold can be obtained through the temperature transfer parameters of the preset mold. For example, if the temperature rise rate of some heating areas is faster than that of other heating areas, then the magnetic field strength required for that area needs to be smaller, or the magnetic field distribution is relatively sparse. Then the current parameters of the induction coil corresponding to that heating area, such as the current magnitude and frequency parameters, can be set to be relatively small to ensure the overall temperature uniformity during the heating process of the preset mold.

[0072] S730 divides the induction coil into multiple coil regions based on the differences in temperature transmission parameters in different heating areas of the preset mold, and determines the current parameters of each coil region.

[0073] Among them, multiple coil areas correspond one-to-one with multiple heating areas.

[0074] It should be noted that before the induction coil and the shaped tooling were fabricated, a preset simulation algorithm was used to simulate the heating process of the target mold, thereby improving the optimization effect for the temperature uniformity target of the target mold. Since the actual shape of the target mold and the thickness of different parts of the material may vary, the required magnetic field strength and distribution in different heating areas of the target mold may differ. Therefore, before heating the target mold, heating experiments were conducted to determine the required magnetic field strength and distribution for each heating area. Based on the magnetic field strength and distribution in different heating areas, the difference in the rate of temperature change in different heating areas of the mold during the actual heating process was determined. If a difference exists, the current parameters of the induction coil in each heating area can be set according to this difference. This ensures that the temperature change process in each heating area is similar during the actual heating of the target mold by the induction coil, thus ensuring the optimization effect for the temperature uniformity target, i.e., ensuring temperature uniformity. Simultaneously, by setting the current parameters of the induction coil in each heating area to ensure temperature uniformity, the geometric parameters of the induction coil do not need to be adjusted again.

[0075] In summary, by conducting heating tests on a pre-designed mold with the same structural parameters as the target mold, the temperature transfer parameters of the pre-designed mold are obtained. Then, based on the different temperature transfer parameters of each heating area, the induction coil is divided into coil regions corresponding to each heating area, and the current parameters corresponding to each coil region are set. During the actual heating process of the target mold, the energization of the induction coil can be controlled according to the current parameters corresponding to each coil region, thereby further improving the optimization effect of temperature uniformity during the heating process of the target mold.

[0076] In some instances, this application also provides a heating device manufactured according to the method of manufacturing a heating device according to any of the above embodiments.

[0077] The heating device provided in this application can be used to heat a target mold, wherein the target mold contains a composite material. During the heating process of the target mold, the composite material can be cured to achieve the molding process of the composite material.

[0078] For example, please refer to Figure 7 The heating device may include an induction coil 314 and a three-dimensional fixture 312. The three-dimensional fixture 312 is installed on the outside of the target mold 300. Specifically, the three-dimensional fixture 312 can be a plate-like structure that matches the shape of the target mold. The induction coil can be adhered to the three-dimensional fixture 312 by adhesive bonding. In this way, the three-dimensional fixture 312 can also fix the induction coil and ensure the stability of the relative position between the multiple turns of the induction coil wire. In addition, the three-dimensional fixture 312 can be made of heat-insulating material. In this way, when the three-dimensional fixture 312 is installed on the target mold 300, it can keep the mold warm, thereby preventing the mold from losing heat too quickly and affecting the temperature of the mold, thus ensuring the curing effect of the composite material 308 inside the mold. At the same time, the three-dimensional fixture 312 means that the induction coil 314 does not need to be in direct contact with the target mold 300, which can effectively reduce the wear and tear of the target mold 300. If the induction coil 314 fails, it can be repaired and replaced directly without modifying the target mold 300.

[0079] The heating device provided in this application is manufactured according to the manufacturing method of the heating device in any of the above embodiments. Therefore, the heating device has all the beneficial effects of the manufacturing method of the heating device in any of the above embodiments, which will not be described in detail here.

[0080] In some examples, the heating device further includes: a plurality of first power sources, each of which is connected to a plurality of coil regions of the induction coil in a one-to-one correspondence.

[0081] In this embodiment, the heating device may further include multiple first power sources. It is understood that the multiple first power sources are used to provide current with different current parameters. In this way, during the heating process of the target mold by the heating device, the induction coils of different heating areas can be controlled separately by different first power sources. That is, the multiple first power sources provide current with different current parameters to different coil areas of the induction coils. In this way, during the heating process of the target mold, the induction coils can be energized according to the current parameters corresponding to each coil area of ​​the target mold, thereby further improving the optimization effect of temperature uniformity during the heating process of the target mold.

[0082] In some examples, the heating device further includes a second power source, which includes multiple current output channels connected one-to-one with multiple coil regions of the induction coil.

[0083] In this embodiment, the heating device may include a second power supply, which may include multiple output channels. Each output channel is capable of outputting a current with different current parameters, and each output channel is connected to multiple coil regions of the induction coil in a one-to-one correspondence. Thus, during the heating of the target mold, the induction coils in different heating regions can be controlled separately by energizing the multiple current outputs of the second power supply. Specifically, the multiple current output channels provide different current parameters to different coil regions of the induction coil. Therefore, during the heating of the target mold, the induction coil can be energized according to the current parameters corresponding to each coil region of the target mold, thereby further improving the optimization effect of temperature uniformity during the heating process.

[0084] In some examples, this application also proposes a method for heating a mold, used to heat a target mold using a heating device as described in any of the above embodiments. The method for heating the mold includes: The shape-forming tooling based on the heating device installs the induction coil on the target mold and controls the induction coil of the heating device to be energized.

[0085] The mold heating method provided in this application can be used to heat a target mold using a heating device. The target mold contains a composite material, and during the heating process, the composite material is heated, thus achieving the curing and molding process as the temperature of the composite material rises. Furthermore, the heating device is manufactured according to the method described in any of the above embodiments. Therefore, this mold heating method possesses all the beneficial effects of the manufacturing method of the heating device described in any of the above embodiments, which will not be elaborated further here.

[0086] In some examples, please refer to Figure 11 This is a schematic flowchart of a mold heating method according to an embodiment of this application. The mold heating method further includes: S810, a shape-forming tooling based on a heating device, installs an induction coil on the target mold and controls the induction coil of the heating device to be energized.

[0087] Specifically, before heating the target mold, the heating device must first be mounted on the target mold using a shaping fixture. This fixture allows the induction coil of the heating device to be mounted on the target mold. When the induction coil is energized, the magnetic field generated by the induction coil can act on the target mold, causing the target mold to heat up under the influence of the magnetic field, thus achieving the heating of the target mold.

[0088] The S820 collects multiple real-time temperatures of the target mold based on a preset acquisition frequency. Specifically, during the heating process of the target mold using a heating device, a temperature sensor can be used to collect the real-time temperature of the target mold, such as a K-type thermocouple or a PT100 platinum resistance thermometer. Specifically, the real-time temperature can be collected according to a preset collection frequency, such as every 10 seconds or every 30 seconds, thereby obtaining multiple real-time temperatures of the target mold.

[0089] S830 determines the temperature change curve of the target mold based on multiple real-time temperatures; Specifically, based on multiple real-time temperatures of the target mold, a temperature change curve can be determined during the heating process of the target mold. This temperature change curve is then compared with a preset temperature change curve. The preset temperature change curve is obtained based on the curing requirements of the composite material in the target mold. For example, during the curing process of the composite material, based on the curing requirements of the composite material, the temperature of the target mold first needs to be raised to 100 degrees Celsius within a preset time, then held at that temperature for half an hour, and then raised to 200 degrees Celsius and held for 2 hours. The temperature change of the target mold over time during these heating and holding stages is the preset temperature change curve. After completing the final holding stage, heating is stopped, and the mold enters a natural cooling stage until demolding.

[0090] S840 adjusts the control parameters of the induction coil based on the real-time difference between the temperature change curve and the preset temperature change curve of the target mold, so that the temperature change curve matches the preset temperature change curve.

[0091] The preset temperature change curve is obtained based on the curing requirements of the composite material in the target mold.

[0092] Specifically, by comparing the temperature change curve with the preset temperature change curve, it can be determined whether the temperature change process of the target mold meets the temperature change required by the material during the curing process.

[0093] The control parameters of the induction coil can be adjusted according to the real-time difference so that the temperature change process of the target mold matches the temperature change process required for the curing of the composite material, that is, so that the temperature change curve of the target mold matches the preset temperature change curve.

[0094] For example, if the temperature change curve of the target mold is lower than the preset temperature change curve, it means that the current temperature of the target mold is lower than the temperature requirement of the composite material curing process. In this case, the current of the induction coil or the power of the current of the induction coil can be increased to increase the temperature of the target mold so that the temperature change process of the target mold matches the temperature change required by the composite material curing process, thus ensuring the curing effect of the composite material.

[0095] In some examples, please refer to Figure 12 This is a flowchart illustrating a method for manufacturing an induction coil for heating a target mold according to an embodiment of this application. The method for manufacturing an induction coil for heating a target mold proposed in this application includes: S910, based on the three-dimensional model of the target mold, determines the initial geometric parameters of the induction coil.

[0096] The induction coil is used to heat the target mold when energized.

[0097] Specifically, the heating process of the target mold by the induction coil is achieved by energizing the induction coil to generate a magnetic field. Under the influence of the magnetic field, the temperature of the metal target mold rises, thereby heating the target mold. The induction coil usually consists of multiple turns of wire arranged at intervals.

[0098] In the process of manufacturing the induction coil, the initial geometric parameters of the induction coil can first be determined based on the three-dimensional model of the target mold. These initial geometric parameters characterize the shape of the induction coil and its relative position to the target mold. Specific shape parameters include, but are not limited to, the diameter, number of turns, and distance between adjacent wires of the induction coil. Relative position parameters include, but are not limited to, the distance between the induction coil and the target mold. Since the three-dimensional model of the target mold reflects its shape and other information, the initial geometric parameters of the induction coil determined using this model naturally reflect the shape and other information of the target mold. This ensures that the shape of the induction coil matches the shape of the target mold, thereby ensuring that the magnetic field generated by the induction coil when energized can effectively act on the target mold, causing the temperature of the target mold to rise under the influence of the magnetic field. Clearly, compared to existing technologies that do not consider the shape compatibility between the induction coil and the target mold and simply place a fixed-shape induction coil at one end of various target molds for heating, this method significantly improves the shape fit between the induction coil and the target mold, resulting in more effective heating and better uniformity of heating in all parts.

[0099] Then, based on the three-dimensional model of the target mold, parameters such as the shape and material of the target mold can be determined.

[0100] In some implementations, the three-dimensional model of the target mold can be created using three-dimensional modeling software based on the actual shape and material of the target mold, such as 3Ds Max, SolidWorks, and other three-dimensional modeling software.

[0101] Specifically, the shape features of the target mold can be determined based on its three-dimensional model. For example, the shape features of the target mold may include its surface shape, including the size of planes, the size and curvature of curved surfaces, and the angles between adjacent surfaces. Correspondingly, to ensure that the magnetic field generated by the induction coil when energized can act on the target mold, causing it to heat up under the influence of the magnetic field, the shape features of the induction coil can be set to match the shape features of the target mold. For example, the shape features of the induction coil can also be obtained by modeling based on the shape features of the target mold using three-dimensional modeling software.

[0102] In some implementations, based on the three-dimensional model of the target mold, the material characteristics of the target mold can be determined, i.e., the temperature change parameters of the target mold when it is within the magnetic field range can be determined. Based on the temperature change parameters, parameters such as the diameter of the induction coil, the number of turns, the distance between adjacent wires, the distance between the induction coil and the target mold, and the magnitude and frequency of the current flowing through the induction coil can be set. For example, the finite element software ABAQUS for engineering simulation can be used to simulate the magnetic field generated by the induction coil when it is energized. ABAQUS can combine the material characteristics of the target mold to simulate the heat conduction of the target mold under the action of the magnetic field, and then obtain data such as the distribution and intensity of the magnetic field acting on the target mold based on the heat conduction process. Based on the distribution and intensity of the magnetic field, initial geometric parameters such as the diameter of the induction coil, the number of turns, the distance between adjacent wires, and the distance between the induction coil and the target mold can be set.

[0103] S920 adjusts the initial geometric parameters according to the target temperature uniformity of the target mold during the heating process to obtain the target geometric parameters of the induction coil.

[0104] It should be noted that the determination of the initial geometric parameters is to ensure that the magnetic field generated by the induction coil when it is energized can effectively act on all parts of the mold, thereby ensuring that the induction coil can heat the entire target mold.

[0105] The specific implementation of this step can be found in S122 to S128 of the above embodiments, and will not be repeated here.

[0106] S930, based on the target geometry parameters, manufactures an induction coil for heating the target mold.

[0107] After obtaining the target geometric parameters, an induction coil can be fabricated based on these parameters. In this way, the fabricated induction coil can effectively improve the temperature uniformity of the target mold during the heating process.

[0108] Understandably, based on a three-dimensional model of an induction coil, one can obtain the number of turns, diameter, and arrangement of the coil's wires, and use these characteristics to manufacture the induction coil.

[0109] For example, relevant production equipment can be used to manufacture the induction coil. The target geometric parameters are input into the production equipment, and the production equipment can then manufacture the induction coil based on the target geometric parameters. Alternatively, the induction coil can also be manufactured manually according to the target geometric parameters.

[0110] In summary, the method for manufacturing an induction coil for heating a target mold according to this application determines the initial geometric parameters of the induction coil based on a three-dimensional model of the target mold. This ensures that the shape of the induction coil manufactured based on the initial geometric parameters matches the target mold, thereby guaranteeing that the magnetic field generated by the induction coil when energized can effectively act on all parts of the mold, thus ensuring that the induction coil can heat the entire target mold. Furthermore, by adjusting the initial geometric parameters according to the temperature uniformity target of the target mold during the heating process, the target geometric parameters corresponding to the induction coil are obtained. In this way, the induction coil manufactured based on the target geometric parameters can effectively improve the temperature uniformity when energized. This, while ensuring that the generated magnetic field can effectively act on all parts of the mold, improves the temperature uniformity of the target mold during the heating process, thereby further improving the heating effect on the target mold and enhancing the curing and molding effect of the composite material in the target mold.

[0111] In one specific embodiment of this application, a heating device for a mold is provided; please refer to [link to relevant documentation]. Figure 13 This is a circuit diagram of the heating device in this embodiment heating the target mold. The heating device includes an induction coil 208, which is fixed and mounted on the target mold 206 by a corresponding shaped tooling. The induction coil 208 is connected to a high-frequency power supply 210, which can energize the induction coil 208 according to the target control parameters of the induction coil 208 to heat the target mold 206.

[0112] In addition, it should be noted that, besides the high-frequency power supply 210, the induction coil 208 and its corresponding shaping tooling, the heating device may also include a temperature control unit 202 and a temperature sensor 204. The temperature sensor 204 can acquire the actual temperature of the composite material in the target mold 206 during the heating process and send a temperature signal to the temperature control unit 202. The temperature control unit 202 receives the actual temperature of the composite material collected by the temperature sensor 204, determines that it conforms to the actual temperature change curve of the material during the curing process, and compares the actual temperature change curve with the preset temperature change curve. If the difference between the actual temperature change curve and the preset temperature change curve is greater than the preset threshold, the temperature control unit 202 can send a control signal to the high-frequency power supply 210 to control the high-frequency power supply 210 to adjust the target control parameters, such as adjusting the output power, voltage, current and frequency of the high-frequency power supply 210, so that the actual temperature change curve of the composite material matches the preset temperature change curve, thereby improving the curing effect of the composite material.

[0113] In some embodiments, please refer to Figure 14 It is through Figure 13The diagram illustrates the process of curing a composite material using a heating device. The composite material is placed within the heating device, which is manufactured using the method described in any of the above embodiments. The curing process of the composite material includes: S1110, obtain the preset temperature change curve of the composite material.

[0114] Understandably, in order to ensure the curing effect of composite materials, it is usually necessary to control the temperature of the composite material to change according to a preset temperature change curve during the curing process. Therefore, before curing the composite material, the preset temperature change curve is first obtained. In this way, during the heating of the target mold, the target mold can be heated according to the change process indicated by the preset temperature change curve, so that the composite material in the target mold can change according to the preset temperature change curve, thereby ensuring the curing effect of the composite material.

[0115] S1120, the temperature control unit generates and sends a control signal to the high-frequency power supply based on the preset temperature change curve.

[0116] For example, the temperature control unit can be electrically connected to the high-frequency power supply. The temperature control unit can be a PLC controller. In this way, the temperature control unit can send control signals to the high-frequency power supply to indicate parameters such as voltage, frequency and power of the electrical energy output by the high-frequency power supply, thereby controlling the operation of the high-frequency power supply.

[0117] S1130, the high-frequency power supply outputs current according to the control signal to cure the composite material in the target mold.

[0118] After receiving the control signal from the temperature control unit, the high-frequency power supply can output current according to the voltage, frequency and power parameters indicated by the control signal, that is, to energize the induction coil of the heating device. In this way, when the induction coil is energized, a magnetic field is generated. Under the action of the magnetic field, the target mold can heat itself up, thereby heating the composite material inside.

[0119] S1140: Determine whether the curing time has reached the preset time. If yes, the curing ends; otherwise, proceed with the next step.

[0120] Specifically, during the heating process, the duration of heating the composite material, i.e., the curing time, can be recorded. Once the preset curing time is reached, the curing process of the composite material can be ended, i.e., the power supply to the induction coil can be stopped. Conversely, if the preset curing time is not reached, it is necessary to continue controlling the high-frequency power supply to the induction coil to continuously heat the target mold and continue curing the composite material.

[0121] S1150 collects the actual temperature of the composite material, and the temperature control unit determines the current parameters of the high-frequency power supply output based on the actual temperature.

[0122] Specifically, if the curing time has not reached the preset time, the actual temperature of the composite material can be collected by temperature sensors such as K-type thermocouples and PT100 platinum resistance thermometers, and the actual temperature can be transmitted to the temperature control unit. The temperature control unit can determine whether the current actual temperature matches the preset temperature change curve based on the collected actual temperature. If they do not match, the high-frequency power supply can be controlled to adjust the parameters of its output current to ensure that the actual temperature of the composite material matches the temperature change curve until the curing time reaches the preset time and the curing process is completed.

[0123] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0124] Those skilled in the art will understand that embodiments of this application can provide methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media containing computer-readable program code.

[0125] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0126] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0128] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform... Figure 1 The flowchart of a mold heating method in the corresponding embodiment.

[0129] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, computer instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any usable medium that a computer can store or a data storage device such as a server or data center that integrates one or more usable media. The usable medium may be a magnetic medium, an optical medium, or a semiconductor medium, etc.

[0130] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0131] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Furthermore, the mutual couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0132] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0133] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in the form of hardware and / or software functional units.

[0134] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device to execute all or part of the steps of the methods in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, magnetic disks, or optical disks.

[0135] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0136] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications that fall outside the scope of this specification.

[0137] Obviously, those skilled in the art can make various modifications to this specification without departing from its spirit and scope. Therefore, this specification is intended to include any modifications that fall within the scope of the claims and their equivalents.

Claims

1. A method for manufacturing a heating device, characterized in that, The heating device is used to heat the target mold, and the heating device includes an induction coil and a shaping fixture. The manufacturing method includes: Based on the three-dimensional model of the target mold, the initial geometric parameters of the induction coil are determined. The induction coil is used to heat the target mold when energized. Based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil; Based on the target geometric parameters, an induction coil of the heating device and a corresponding shape fixture are fabricated. The shape fixture is used to fix the relative position between the induction coil and the target mold when the target mold is heated by the heating device. The heating device is obtained by installing the induction coil onto the shaped tooling.

2. The manufacturing method according to claim 1, characterized in that, The step of adjusting the initial geometric parameters according to the target temperature uniformity of the target mold during the heating process to obtain the target geometric parameters of the induction coil includes: Based on the induction coil corresponding to the initial geometric parameters, a heating simulation is performed on the target mold to obtain the simulated temperature uniformity of the target mold during the heating process; If the simulated temperature uniformity meets the temperature uniformity target, then the initial geometric parameters are determined as the target geometric parameters; If the simulated temperature uniformity does not meet the temperature uniformity target, the initial geometric parameters are adjusted according to the temperature uniformity target, and the target mold is heated and simulated based on the induction coil corresponding to the adjusted initial geometric parameters until the simulated temperature uniformity meets the temperature uniformity target. The adjusted initial geometric parameters that satisfy the temperature uniformity target are determined as the target geometric parameters of the induction coil.

3. The manufacturing method according to claim 2, characterized in that, The heating simulation of the target mold based on the induction coil corresponding to the initial geometric parameters, to obtain the simulated temperature uniformity of the target mold during the heating process, includes: Based on the induction coil corresponding to the initial geometric parameters, a heating simulation is performed on the target mold. During the heating simulation process, the thermal energy conversion parameters of the target mold are calculated based on the physical parameters of the target mold when the magnetic field generated by the induction coil acts on the target mold. Based on the heat conversion parameters, the simulated temperature uniformity of the target mold during the heating process is obtained.

4. The manufacturing method according to claim 1, characterized in that, The step of fabricating the induction coil and the corresponding shaped tooling based on the target geometric parameters includes: Based on the target geometric parameters, a three-dimensional model of the induction coil is generated; Based on the three-dimensional model of the induction coil, the induction coil is fabricated; Based on the target geometric parameters and the three-dimensional model of the induction coil, the three-dimensional tooling is fabricated.

5. The manufacturing method according to claim 4, characterized in that, The manufacturing method further includes: Based on the heating device, a heating test is conducted on a preset mold, wherein the structural parameters of the preset mold are the same as those of the target mold; During the heating test, the temperature transfer parameters of the preset mold are obtained; Based on the differences in the temperature transmission parameters in different heating areas of the preset mold, the induction coil is divided into multiple coil regions, and the current parameters of each coil region are determined; wherein, the multiple coil regions correspond one-to-one with the multiple heating regions.

6. A heating device, characterized in that, The heating device is manufactured according to the method for manufacturing a heating device according to any one of claims 1 to 5.

7. The heating device according to claim 6, characterized in that, Also includes: Multiple first power sources are connected one-to-one with multiple coil regions of the induction coil.

8. The heating device according to claim 6, characterized in that, Also includes: The second power supply includes multiple current output channels, each of which is connected to a corresponding coil region of the induction coil.

9. A method for heating a mold, characterized in that, The heating method is used to heat the target mold using the heating device according to claim 6, the heating method comprising: The induction coil is installed on the target mold using a shaped tooling based on the heating device, and the induction coil of the heating device is energized.

10. The heating method according to claim 9, characterized in that, The heating method further includes: Based on a preset acquisition frequency, multiple real-time temperatures of the target mold are acquired. Based on the multiple real-time temperatures, determine the temperature change curve of the target mold; Based on the real-time difference between the temperature change curve and the preset temperature change curve of the target mold, the control parameters of the induction coil are adjusted so that the temperature change curve matches the preset temperature change curve. The preset temperature change curve is obtained based on the curing requirements of the composite material in the target mold.

11. A method for manufacturing an induction coil for heating a target mold, characterized in that, include: Based on the three-dimensional model of the target mold, the initial geometric parameters of the induction coil are determined. The induction coil is used to heat the target mold when energized. Based on the target temperature uniformity of the target mold during the heating process, the initial geometric parameters are adjusted to obtain the target geometric parameters of the induction coil; Based on the target geometric parameters, an induction coil is fabricated for heating the target mold.

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