WO2017084115A1 - 线圈盘及其制造方法、电磁加热设备 - Google Patents

线圈盘及其制造方法、电磁加热设备 Download PDF

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Publication number
WO2017084115A1
WO2017084115A1 PCT/CN2015/096055 CN2015096055W WO2017084115A1 WO 2017084115 A1 WO2017084115 A1 WO 2017084115A1 CN 2015096055 W CN2015096055 W CN 2015096055W WO 2017084115 A1 WO2017084115 A1 WO 2017084115A1
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WIPO (PCT)
Prior art keywords
conductive metal
coil
mold
coil disk
bracket
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PCT/CN2015/096055
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English (en)
French (fr)
Inventor
杨玲
曹达华
梅若愚
Original Assignee
佛山市顺德区美的电热电器制造有限公司
美的集团股份有限公司
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Publication of WO2017084115A1 publication Critical patent/WO2017084115A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements

Definitions

  • the invention relates to the technical field of household electrical appliances, in particular to a coil disk, a manufacturing method thereof and an electromagnetic heating device.
  • the coil disk is the most important component of various microwave heating household appliances, which not only affects the manufacturing cost of electrical appliances, but also is a key factor in determining the quality of household appliances.
  • electromagnetic heating coil disks in electromagnetic induction heating technology are used to heat and cook food.
  • Electromagnetic coil disk heating is based on the principle of magnetic field induced eddy current. The high frequency alternating current is passed through the toroidal coil to generate a closed magnetic field. When the magnetic field lines pass through the bottom of the magnetic conductive cooker, the magnetic lines are cut, and numerous small eddy currents are generated to the pan. heating.
  • the heating coils in the coil plates of small household appliances heated by electromagnetic induction heating technology are all wound by enameled wires. This winding process is complicated and prone to process defects such as jumpers, scratches, short wires, etc., and the coils are in a single form, and The flexible processing of the coil cannot be realized, and the development cycle is long when the coil needs to be changed.
  • An object of the present invention is to provide a coil disk, a method of manufacturing the same, and an electromagnetic heating device, which realizes flexible processing of the coil, shortens the development cycle of changing the coil, and saves cost.
  • the invention provides a coil disk comprising a bracket and a coil attached to the bracket, the coil being a conductive metal sheet extending in accordance with a predetermined winding path.
  • the bracket is injection molded, and the coil is attached to the bracket during injection molding of the bracket.
  • the surface of the conductive metal sheet away from the bracket is covered with a protective layer.
  • the protective layer is attached to the conductive metal sheet by injection molding.
  • the conductive metal sheet has a thickness ranging from 0.2 mm to 0.5 mm.
  • the conductive metal sheet is in the shape of an Archimedes spiral.
  • the conductive metal sheet has a width ranging from 1 mm to 3 mm per turn, and a gap between the adjacent turns of the conductive metal sheet ranges from 0.5 mm to 2 mm.
  • the bracket is in the shape of a disc or a bowl.
  • the conductive metal sheet is made of copper, silver or aluminum.
  • the invention provides an electromagnetic heating apparatus comprising the coil disc described above.
  • the electromagnetic heating device electromagnetic oven, rice cooker, electric pressure cooker, fried copy machine, soya-bean milk machine, electric kettle, Coffee machine or electric cooker.
  • the present invention also provides a coil disk manufacturing method, comprising the following steps:
  • the conductive metal plate is subjected to a cutting process to form the conductive metal plate to form a conductive metal piece extending in a predetermined winding path.
  • the method comprises:
  • a holder to which a conductive metal sheet is attached is placed in a second mold, and injection molded in the second mold to form a protective layer covering the conductive metal sheet.
  • the method comprises: stamping the conductive metal plate to match the shape of the first metal mold.
  • the present invention also provides a coil disk manufacturing method, comprising the following steps:
  • Injection molding is performed in the third mold to form a bracket for attachment of the conductive metal sheet.
  • the method includes: placing a bracket with the conductive metal sheet attached in the fourth mold, in the fourth mold Injection molding is performed to form a protective layer overlying the conductive metal sheet.
  • the method comprises: performing a cutter cutting process on the conductive metal plate or performing a punching and cutting process on the conductive metal plate to form a conductive metal piece extending according to a predetermined winding path.
  • the invention provides a coil disk, a manufacturing method thereof and an electromagnetic heating device.
  • the coil in the coil disk is attached to the bracket by a conductive metal piece extending according to a predetermined winding path. Therefore, each of the brackets can be formed on the bracket.
  • the coil of the desired shape makes the production of the coil disc more flexible, shortens the development cycle of changing the coil, and saves cost.
  • FIG. 1 is a top plan view of a coil disk according to an embodiment of the present invention.
  • FIG. 2 is a top plan view of a bracket according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the coil disk in the A-A direction of FIG. 1 according to an embodiment of the present invention
  • FIG. 4 is a top plan view of a coil disk with a protective layer attached thereto according to an embodiment of the present invention
  • FIG. 5 is a schematic flow chart of a method for manufacturing a coil disk according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of placing a conductive metal plate in a first mold according to an embodiment of the present invention
  • FIG. 7 is a top plan view showing an integrated structure of a conductive metal plate and a bracket according to an embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a method for manufacturing a coil disk according to another embodiment of the present invention.
  • FIG. 9 is a top plan view of a conductive metal plate according to an embodiment of the present invention.
  • FIG. 10 is a schematic flow chart of a method for manufacturing a coil disk according to another embodiment of the present invention.
  • Figure 11 is a plan view of a conductive metal piece 3 according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural view of placing a conductive metal sheet in a third mold according to an embodiment of the present invention.
  • FIG. 1 is a top view of a coil disk according to an embodiment of the present invention.
  • the coil disk includes a bracket 1 and a coil 2 attached to the bracket 1 .
  • the coil 2 is as intended.
  • a conductive metal sheet 3 extending in a winding path.
  • the conductive metal piece 3 in the present embodiment is the coil 2, and the bracket 1 shown in FIG. 2 can be molded by in-mold molding.
  • the coil 2 is attached to the bracket 1 during the injection molding of the bracket 1, that is, the conductive metal sheet 3 is attached to the bracket 1.
  • the conductive metal plate to be formed into the coil may be attached during the injection molding process of the bracket 1.
  • the conductive metal sheet 3 is then formed into a conductive metal sheet, and the conductive metal sheet 3 formed in the above two cases is integrally formed with the bracket 1 so that the formed coil disk is more light and thin, and the conductive metal sheet 3 is formed.
  • the conductive metal plate is formed by a numerical control machine tool (CNC) processing or press forming. Therefore, the conductive metal piece 3 of various desired shapes can be formed on the bracket 1 to realize the coil 2 Flexible processing, in addition, the coil processed by CNC machining or stamping is faster than the prior art winding coil, shortening the change coil The development cycle, and saving labor costs.
  • CNC numerical control machine tool
  • the conductive metal sheet 3 is used as the coil 2 in comparison with the prior art, and the method of winding the enameled wire is adopted, thereby avoiding the occurrence of jumps, scratches, broken wires, and the like, and winding of the coil by the method of winding the enameled wire.
  • the material of the conductive metal piece 3 is generally made of metal. It can be selected from metal materials with a thickness tolerance of ⁇ 0.05 mm, such as copper, silver or aluminum. In order to make the coil disk have good heat dissipation, the general carrier material is selected. In order to achieve beryllium copper, in order to achieve thinning of the coil disk, the conductive metal piece may be made of a conductive metal plate, such as a copper plate. It is made by means of processing or stamping, and the thickness range of the copper plate, that is, the thickness of the conductive metal piece ranges from 0.2 mm to 0.5 mm.
  • the shape of the bracket 1 is in the shape of a bowl or a disk.
  • the bracket 1 has a bowl shape.
  • the bracket 1 has a disk shape, and of course other shapes, the conductive metal sheet 3 is
  • the Archimedes spiral shape may also be referred to as a spiral shape, that is, the predetermined winding path of the coil is in the shape of an Archimedes spiral, and the width of the conductive metal sheet 3 per circle is in the range of 1 mm to 3 mm.
  • the gap between adjacent turns of the conductive metal piece 3 ranges from 0.5 mm to 2 mm to ensure the insulation between the adjacent turns of the coil while satisfying the conductive properties of the coil.
  • the shape, width, thickness, pitch, and number of turns of the conductive metal piece 3 can be changed according to the needs of the actual product. In this embodiment, the shape, width, thickness, pitch, and number of turns of the conductive metal piece are not limited.
  • the conductive metal sheet 3 formed by the CNC processing, the groove between the adjacent conductive metal sheets 3, that is, the groove 4 is generally rectangular in cross section, as shown in FIG. 3, of course, the shape of the conductive metal sheet is also It varies with the shape of the tool mounted on the CNC and the width of the blade.
  • the coil disk in this embodiment may further include a film through the film.
  • the inner molding process is a protective layer 5 covering the surface of the conductive metal sheet away from the surface of the bracket. As shown in FIG. 4, the protective layer 5 is provided with wiring holes 51 and 52 for exposing the terminals of the conductive metal sheet, and the wiring holes.
  • the protective layer 5 is such that the conductive metal piece 3 as a whole is not exposed, which enhances the waterproof performance and the oxidation resistance of the coil disk.
  • the protective layer 5 may not include the wiring holes 51 and 52.
  • the two terminals of the conductive metal sheet 3 may respectively leak out at the edges of the protective layer 5, that is, the a edge and the b edge, which is not limited in this embodiment.
  • the material of the protective layer is not limited to plastics, and may be other materials capable of preventing oxidation and water resistance.
  • the adhesion process of the protective layer is not limited to injection molding, and other processes such as spraying may also be employed.
  • Embodiments of the present invention also provide an electromagnetic heating apparatus including the coil disc described above.
  • the above coil disc is used in the IH heating method, and the magnetic lines of the IH coil heat the inner pot to make the food heat evenly and fast.
  • the electromagnetic heating device is, for example, an induction cooker, a decocting machine, a soybean milk machine, an electric kettle, a coffee machine, an electric cooker, a rice cooker, an electric pressure cooker, etc., and the cooking food is performed by the principle of electromagnetic induction.
  • the coil disk is thinner and lighter than the conventional coil disk, and the design and manufacture are flexible.
  • the embodiment of the invention further provides a schematic flowchart of a method for manufacturing a coil disk. As shown in FIG. 5, the method includes the following steps:
  • the first mold 7 may include a lower mold 71 and an upper mold 72, and the conductive metal plate 6 is placed on the lower mold 71 of the first mold 7 for positioning, for example, when the mold is designed, the mold may be set. Mark location, or for The card or the like which enables the conductive metal plate 6 to be fixed, so that the conductive metal plate does not loosen during the process of clamping after being placed.
  • the upper mold 72 and the lower mold 71 are clamped, and the plastics are molded into the cavity of the upper mold 72 and the lower mold 71.
  • This embodiment does not limit the material of the plastic, and may be a general plastic in the prior art. It is understandable that After the upper mold 72 and the lower mold 71 are clamped, the cavity between the two is a cavity of a predetermined shape, the conductive metal plate 6 is placed in the cavity, and then the plastic is injected into the cavity to form An integrally formed structure of the conductive metal plate 6 and the bracket 1.
  • the conditions of injection molding plastic can be: taking PBT plastic as an example, the injection temperature is 180°C-300°C, the injection pressure is 90Mpa-160Mpa, the injection cycle is 20s-35s, and the specific injection molding can be different according to different plastic materials.
  • the temperature, the injection pressure, and the injection molding cycle are for illustrative purposes only and are not intended to be limiting.
  • the conductive metal plate 6 is attached to the holder 1.
  • steps 502 and 503 can also be exchanged, that is, the protective layer is first attached to the conductive metal plate by overmolding, and then the conductive metal plate is cut to form a conductive extending according to a predetermined winding path.
  • Metal sheets are first attached to the conductive metal plate by overmolding, and then the conductive metal plate is cut to form a conductive extending according to a predetermined winding path.
  • the conductive metal piece 3 is centered on the center of the bracket 1 and has an Archimedes spiral shape according to a predetermined winding path. Of course, other shapes may be used. In this embodiment, the specific shape is not limited, and the conductive metal piece 3 is close to One end of the center of the bracket 1 has a first wiring contact, and one end of the conductive metal piece 3 away from the center of the bracket 1 has a second wiring contact.
  • the present embodiment does not limit the shape of the first mold 7 in FIG. 6 described above.
  • the present embodiment only adopts the schematic diagram of FIG. 6, that is, the FIG. 6
  • the first mold 7 may be of various shapes suitable for production, and the opening of the injection molded plastic may also be adapted for production.
  • the first mold diagram in this embodiment is for illustrative purposes only.
  • the method further includes the following steps:
  • the conductive metal plate 6 can be selected from copper sheets. Since the copper sheets have good electrical conductivity, they are easy to process, have good heat dissipation properties, are relatively stable in performance, and are relatively light and thin.
  • the conductive metal plate 6 has a shape of a bowl or a disk.
  • the carrier has a bowl shape, and for the induction cooker, the carrier has a disk shape. Of course, it can also be other shapes.
  • the method also includes:
  • the bracket with the conductive metal sheet 3 attached is placed in a second mold, and injection molded in the second mold to form a protective layer 5 covering the conductive metal sheet 3, that is, the protective layer 5 is also made of plastic.
  • the formed coil disk is shown in Fig. 4.
  • the protective layer 4 prevents the conductive metal sheet 3 from being exposed as a whole, and enhances the waterproof performance and oxidation resistance of the coil disk.
  • the coil coil manufacturing method described above can also be made by the following steps, as shown in FIG. 10, specifically including the following steps:
  • the conductive metal piece 3 is placed in a third mold 8, and the conductive metal piece 3 extends in accordance with a predetermined winding path.
  • the conductive metal plate 6 is firstly understood.
  • the conductive metal plate 6 can also be understood as a conductive metal plate 6 after being punched according to actual production.
  • the top view of the conductive metal plate 6 is as shown in FIG.
  • the conductive metal plate 6 is processed into a conductive metal piece 3 by CNC machining or press forming.
  • the top view of the conductive metal piece 3 is as shown in Fig. 11, and the conductive metal piece 3 is placed in the third mold 8, as shown in Fig. 12.
  • the present embodiment does not limit the shape of the third mold 8 in FIG. 12 described above.
  • the present embodiment only adopts the schematic diagram of FIG. 12, that is, the diagram in FIG.
  • the third mold 8 may be of various shapes suitable for production, and the opening of the injection molded plastic may also be adapted for production.
  • the third mold diagram in this embodiment is for illustrative purposes only.
  • the manufacturing of the coil disk is different from the flow in FIG. 8 .
  • the coil disk is formed by forming the conductive metal piece 3 first, and then the conductive metal piece is formed by in-mold molding. 3 is attached to the bracket 1 and the bracket 1 is molded while being in-mold-molded; and in FIG. 8, the conductive metal plate 6 to be formed with the conductive metal sheet 3 is first attached to the bracket 1 by means of in-mold injection molding, and the bracket 1 is The in-mold injection molding is simultaneously performed; then the conductive metal plate is processed to form the conductive metal sheet 3.
  • the conductive metal sheet 3 can be formed by a tool cutting process (such as CNC machining) or a stamping process, which will not be described in detail in this embodiment.
  • the method includes the following in FIG. The steps shown:
  • the holder 1 to which the conductive metal piece 3 is attached is placed in a fourth mold, and injection molded in the fourth mold to form a protective layer 5 covering the conductive metal sheet, as shown in FIG.
  • the coil disc formed by the above-mentioned FIG. 8 and FIG. 10 can realize the flexible processing of the conductive metal sheet 3, shortening the development cycle of the coil disc and saving the cost.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Cookers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

一种线圈盘及其制造方法、电磁加热设备，线圈盘包括：支架（1）以及附着在支架（1）上的线圈（2），线圈（2）为按照预定的绕线路径延伸的导电金属片（3）。线圈盘的制造方法包括如下步骤：将导电金属板（6）置于第一模具中；在第一模具内注塑，以形成供所述导电金属板（6）附着的支架（1）；对所述导电金属板（6）进行切割加工，使所述导电金属板（6）形成按照预定绕线路径延伸的导电金属片（3）。电磁加热设备包括上述的线圈盘。上述制造方法实现了线圈的加工柔性化，缩短了更改线圈的开发周期，节省了成本。

Description

线圈盘及其制造方法、电磁加热设备 技术领域
本发明涉及家电设备技术领域，具体涉及一种线圈盘及其制造方法、电磁加热设备。
背景技术
线圈盘是各种微波加热家用电器最重要的部件，不但影响着电器的制造成本，也是决定家用电器品质的关键因素。在常规电饭煲、电磁炉等家用电器中大多采用电磁感应加热技术中的电磁加热线圈盘对食物进行加热和烹饪。电磁线圈盘加热是基于磁场感应涡流原理，利用高频交变电流通过环形线圈，从而产生封闭的磁场，当磁力线通过导磁锅具的底部，磁力线被切割，会产生无数小涡流对锅具进行加热。
使用电磁感应加热技术加热的小家电的线圈盘中的加热线圈都是用漆包线来绕制，这种绕线工艺复杂容易出现跳线、刮伤、短线等制程不良，而且线圈的形式单一，并不能够实现线圈的柔性化加工，在需要更改线圈时，开发周期较长。
发明内容
本发明的目的是提供一种线圈盘及其制造方法、电磁加热设备，实现了线圈的加工柔性化，缩短了更改线圈的开发周期，节省了成本。
为此目的，第一方面，本发明提出一种线圈盘，包括支架以及附着在所述支架上的线圈，所述线圈为按照预定的绕线路径延伸的导电金属片。
可选地，所述支架通过注塑成型，所述线圈在所述支架注塑成型的过程中附着在所述支架上。
可选地，所述导电金属片远离所述支架的表面覆盖有保护层。
可选地，所述保护层通过注塑成型的方式附着在所述导电金属片上。
可选地，所述导电金属片的厚度范围是0.2mm～0.5mm。
可选地，所述导电金属片呈阿基米德螺旋线形状。
可选地，所述导电金属片每圈的宽度范围是1mm～3mm，所述导电金属片相邻圈之间的间隙范围是0.5mm～2mm。
可选地，所述支架呈圆盘状或者碗状。
可选地，所述导电金属片的材质是铜、银或者铝。
第二方面，本发明提供了一种电磁加热设备，包括上述的线圈盘。
可选地，所述电磁加热设备电磁炉、电饭煲、电压力锅、煎拷机、豆浆机、电热水壶、 咖啡机或者电炖盅。
第三方面，本发明还提供了一种线圈盘制造方法，包括如下步骤：
将导电金属板置于第一模具中；
在所述第一模具内注塑，以形成供所述导电金属板附着的支架；
对所述导电金属板进行切割加工，使所述导电金属板形成按照预定绕线路径延伸的导电金属片。
可选地，在对所述导电金属板进行切割加工，使所述导电金属板形成按照预定绕线路径延伸的导电金属片步骤之后包括：
将附着有导电金属片的支架置于第二模具中，在第所述二模具中注塑，以形成覆盖在所述导电金属片上的保护层。
可选地，在将所述导电金属板置于第一模具中之前，包括：对所述导电金属板进行冲压处理，使所述导电金属板与所述第一模具的形状相适配。
第四方面，本发明还提供了一种线圈盘制造方法，包括如下步骤：
将导电金属片置于第三模具中，所述导电金属片按照预定的绕线路径延伸；
在所述第三模具内注塑，以形成供所述导电金属片附着的支架。
可选地，在所述第三模具内注塑，以形成供所述导电金属片附着的支架步骤之后包括：将附着有导电金属片的支架置于第四模具中，在所述第四模具中注塑，以形成覆盖在所述导电金属片上的保护层。
可选地，在将导电金属片置于第三模具中之前，包括：对导电金属板进行刀具切割处理或者对导电金属板进行冲压切除处理，以形成按照预定绕线路径延伸的导电金属片。
本发明提供了一种线圈盘及其制造方法、电磁加热设备，该线圈盘中的线圈由于是按照预定的绕线路径延伸的导电金属片，附着在支架上，因此，可以在支架上形成各种所需形状的线圈，使得线圈盘的生产更加柔性化，缩短了更改线圈的开发周期，并节省了成本。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1为本发明一实施例提供的线圈盘的俯视图；
图2为本发明一实施例提供的支架的俯视图；
图3为本发明一实施例提供的线圈盘在图1中A-A方向的剖视示意图；
图4为本发明一实施例提供的附着有保护层的线圈盘的俯视图；
图5为本发明一实施例提供的线圈盘制造方法的流程示意图；
图6为本发明一实施例提供的将导电金属板置于第一模具的结构示意图；
图7为本发明一实施例提供的导电金属板和支架一体结构的俯视图；
图8为本发明另一实施例提供的线圈盘制造方法的流程示意图；
图9为本发明一实施例提供的导电金属板的俯视图；
图10为本发明另一实施例提供的线圈盘制造方法的流程示意图；
图11为本发明一实施例提供的导电金属片3的俯视图；
图12为本发明一实施例提供的将导电金属片置于第三模具的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1示出了本发明实施例提供的一种线圈盘的俯视图，如图1所示，该线圈盘包括支架1以及附着在所述支架1上的线圈2，所述线圈2为按照预定的绕线路径延伸的导电金属片3。
其中，由于线圈2为按照预定的绕线路径延伸的导电金属片3，也可以理解为本实施例中的导电金属片3为线圈2，如图2所示的支架1可以通过模内注塑成型，线圈2在支架1注塑成型的过程中附着在支架1上，也即导电金属片3附着在支架1上，当然，也可以为待形成线圈的导电金属板在支架1注塑成型的过程中附着在支架1上，然后再对导电金属板加工制作形成导电金属片3，上述两种情况下形成的导电金属片3会和支架1一体成型，使得形成后的线圈盘更加轻薄，导电金属片3可以理解为由导电金属板通过数控机床(Computer Numerical Control，简称CNC)加工或者冲压成型的方式制成，因此，可以在支架1上形成各种所需形状的导电金属片3，实现了线圈2的柔性加工，另外通过CNC加工或者冲压成型的方式加工的线圈相对于现有技术的绕制线圈的方式速度快，缩短了更改线圈的开发周期，并节省了人工成本。
另外，由导电金属片3作为线圈2相对于现有技术中采用绕制漆包线的方式制作，避免了采用绕制漆包线的方式制作线圈出现跳线、刮伤、断线等不良现象以及绕制线圈的形式单一的问题。
导电金属片3的材质一般为金属材质，可以选用稳定性好，厚度公差能够控制在±0.05mm的金属材质，例如铜、银或者铝，为了使得线圈盘具有良好的散热性，一般载体材质选为铍铜，另外为了实现线圈盘的轻薄化，导电金属片可以由导电金属板，例如铜板通 过加工或者冲压成型的方式制成，铜板的厚度范围也即导电金属片的厚度范围为0.2mm-0.5mm。
支架1的形状呈碗状或者圆盘状，对于电饭煲和电压力锅来说，支架1呈碗状，对于电磁炉来说，支架1呈圆盘状，当然也可以为其他形状，导电金属片3呈阿基米德螺旋线形状，也可称之为涡旋状，即线圈预定的绕线路径呈阿基米德螺旋线形状，所述导电金属片3每圈的宽度范围是1mm～3mm，所述导电金属片3相邻圈之间的间隙范围是0.5mm～2mm，以在满足线圈导电性能的同时，保证线圈相邻圈之间的绝缘性。当然导电金属片3的形状、宽度、厚度、间距和圈数均可以根据实际产品的需要进行更改，本实施例中并不对导电金属片的形状、宽度、厚度、间距和圈数进行限定。
其中，通过CNC加工形成的导电金属片3，相邻每圈导电金属片3之间的凹槽即线槽4的横截面一般呈矩形，如图3所示，当然导电金属片的形状也会随着CNC上安装的刀具形状以及刀刃的宽度不同而变化。
由于上述图1线圈盘中的导电金属片3整体外露，为了使得导电金属片3整体不会外露，增强了线圈盘的防水性能和防氧化性能，本实施例中的线圈盘还可以包括通过膜内注塑工艺在导电金属片远离所述支架的表面覆盖的保护层5，如图4所示，所述保护层5上设有露出所述导电金属片接线端子的接线孔51和52，接线孔51和52分别用于露出导电金属片3的两个接线端子，该保护层5使得导电金属片3整体不会外露，增强了线圈盘的防水性能和防氧化性能。当然，保护层5上也可以不包括接线孔51和52，导电金属片3的两个接线端子可以分别在保护层5的两边缘即a边缘和b边缘漏出，本实施例不对其进行限定，值得注意的是，保护层的材料也不限于塑料，还可以为其它能起到防氧化和防水性能的材料，保护层的附着工艺也不限于注塑，还可以采用喷涂等其它工艺。
本发明实施例还提供了一种电磁加热设备，包括上述的线圈盘。
上述线圈盘使用在IH加热方式的产品上，IH线圈的磁力线对内锅进行加热，使得食物受热均匀且速度快。
所述电磁加热设备例如为电磁炉、煎拷机、豆浆机、电热水壶、咖啡机、电炖盅、电饭煲、电压力锅等，通过电磁感应原理进行烹饪食物。该线圈盘比传统的线圈盘更轻薄，实现设计和制作的柔性化。
本发明实施例还提供了一种线圈盘制造方法的流程示意图，如图5所示，包括如下步骤：
501、将导电金属板6置于第一模具中。
如图6所示，第一模具7可以包括下模71和上模72，将导电金属板6放置在第一模具7的下模71上进行定位，例如在设计模具的时候可以将模具设置一个标记位置，或者用于 使导电金属板6能够固定的卡托等，使得导电金属板在放置后合模的过程中不松动。
将上模72和下模71进行合模，向上模72和下模71的型腔内注塑塑胶，本实施例不对塑胶的材料进行限定，可以为现有技术中的一般塑料，可理解的是，在上模72和下模71合模后，两者之间的型腔为预定形状的型腔，将导电金属板6放入该型腔中，然后再向型腔内注塑塑胶，以形成导电金属板6和支架1的一体成型结构。
其中，注塑塑胶的条件可以为：以PBT塑胶为例，注塑温度为180℃-300℃，注塑压力为90Mpa-160Mpa，注塑周期为20s-35s，具体的可以根据不同的塑胶材料选用不同的注塑温度、注塑压力和注塑周期，本实施例仅用于举例说明，不对其进行限定。
502、在所述第一模具7内注塑，以形成供所述导电金属板6附着的支架1。
如图7所示，通过步骤501注塑后，导电金属板6附着在支架1上。
503、对所述导电金属板6进行切割加工，使所述导电金属板6形成按照预定绕线路径延伸的导电金属片3，例如用数控机床按照预定的刀具轨迹对导电金属板进行加工，如图1所示。
值得注意的是步骤502和503的顺序也可以交换，即先在导电金属板上通过二次注塑附着保护层，然后再对导电金属板进行切割加工，以形成按照预定的绕线路径延伸的导电金属片。
导电金属片3以支架1的中心为中心，按照预定绕线路径呈阿基米德螺旋线形状，当然也可以为其他形状，本实施例不对其具体形状进行限定，所述导电金属片3靠近所述支架1的中心的一端具有第一接线触头，所述导电金属片3远离所述支架1的中心的一端具有第二接线触头。
可理解的是，本实施例并不对上述图6中的第一模具7的形状进行限定，本实施例为了更好的进行说明，只是采用了图6的示意图，也就是说，图6中的第一模具7可以为适于生产的各种形状，以及注塑塑胶的开口也可以适于生产进行设置，本实施例中的第一模具图仅用于举例说明。
如图8所示，在上述步骤501置于第一模具7中之前，所述方法还包括以下步骤：
500、对所述导电金属板6进行冲压处理，使所述导电金属板6与所述第一模具7的形状相适配。
在步骤500中，导电金属板6可以选用铜片，由于铜片导电性能好，容易加工、散热性也较好、性能较稳定，且比较轻薄。
如图9所示为导电金属板6的俯视图，导电金属板6的形状呈碗状或者圆盘状，对于电饭煲和电压力锅来说，载体呈碗状，对于电磁炉来说，载体呈圆盘状，当然也可以为其他形状。
在执行步骤500之后，执行上述步骤501-503，在上述步骤503中在对所述导电金属板进行切割加工，使所述导电金属板形成按照预定绕线路径延伸的导电金属片步骤之后，所述方法还包括：
504、将附着有导电金属片3的支架置于第二模具中，在第所述二模具中注塑，以形成覆盖在所述导电金属片3上的保护层5，即保护层5也由塑料制成，形成后的线圈盘如图4所示。
该保护层4使得导电金属片3整体不会外露，增强了线圈盘的防水性能和防氧化性能。
在另一个可实现的方式中，上述线圈盘制造方法还可以通过以下步骤制成，如图10所示，具体包括以下步骤：
101、将导电金属片3置于第三模具8中，所述导电金属片3按照预定的绕线路径延伸。
需要说明的是，本实施例中首先将导电金属板6，该导电金属板6也可以理解为按照实际生产加工冲压后的导电金属板6，导电金属板6的俯视图如图9所示，通过CNC加工或者冲压成型的方式将导电金属板6加工成导电金属片3，导电金属片3的俯视图如图11所示，将导电金属片3至于第三模具8中，如图12所示。可理解的是，本实施例并不对上述图12中的第三模具8的形状进行限定，本实施例为了更好的进行说明，只是采用了图12的示意图，也就是说，图12中的第三模具8可以为适于生产的各种形状，以及注塑塑胶的开口也可以适于生产进行设置，本实施例中的第三模具图仅用于举例说明。
102、在所述第三模具8内注塑，以形成供所述导电金属片3附着的支架1，如图1所示。
可理解的是，本实施例中制造线圈盘与图8中的流程不同的是，本实施例中制造线圈盘是在先形成导电金属片3，然后再通过模内注塑的方式将导电金属片3附着在支架1上，支架1在模内注塑的同时成型；而图8中是先通过膜内注塑的方式将待形成导电金属片3的导电金属板6附着在支架1上，支架1在模内注塑的同时成型；然后再对导电金属板进行加工形成导电金属片3。当然，本实施例中导电金属片3的制作方式可以是通过刀具切割加工形成(比如CNC加工)或者冲压加工形成，本实施例不再进行详细说明。
同样，为了增强线圈盘的防水性能和防氧化性能，故在上述步骤102在所述第三模具内注塑，以形成供所述导电金属片附着的支架步骤之后，所述方法包括图10中未示出的步骤：
将附着有导电金属片3的支架1置于第四模具中，在所述第四模具中注塑，以形成覆盖在所述导电金属片上的保护层5，如图4所示
上述通过图8和图10形成的线圈盘，均能够实现导电金属片3的柔性化加工，缩短了线圈盘的开发周期并节省了成本，
此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。
虽然结合附图描述了本发明的实施方式，但是本领域技术人员可以在不脱离本发明的精神和范围的情况下做出各种修改和变型，这样的修改和变型均落入由所附权利要求所限定的范围之内。

Claims (17)

  1. 一种线圈盘，其特征在于，包括支架以及附着在所述支架上的线圈，所述线圈为按照预定的绕线路径延伸的导电金属片。
  2. 根据权利要求1所述的种线圈盘，其特征在于，所述支架通过注塑成型，所述线圈在所述支架注塑成型的过程中附着在所述支架上。
  3. 根据权利要求1或2所述的线圈盘，其特征在于，所述导电金属片远离所述支架的表面覆盖有保护层。
  4. 根据权利要求3所述的线圈盘，其特征在于，所述保护层通过注塑成型的方式附着在所述导电金属片上。
  5. 根据权利要求1-4中任一项所述的线圈盘，其特征在于，所述导电金属片的厚度范围是0.2mm～0.5mm。
  6. 根据权利要求1-5中任一项所述的线圈盘，其特征在于，所述导电金属片呈阿基米德螺旋线形状。
  7. 根据权利要求6所述的线圈盘，其特征在于，所述导电金属片每圈的宽度范围是1mm～3mm，所述导电金属片相邻圈之间的间隙范围是0.5mm～2mm。
  8. 根据权利要求1-7中任一项所述的线圈盘，其特征在于，所述支架呈圆盘状或者碗状。
  9. 根据权利要求1-8中任一项所述的线圈盘，其特征在于，所述导电金属片的材质是铜、银或者铝。
  10. 一种电磁加热设备，其特征在于，包括权利要求1-9中任一项所述的线圈盘。
  11. 根据权利要求10所述的电磁加热设备，其特征在于，所述电磁加热设备为电磁炉、电饭煲、电压力锅、煎拷机、豆浆机、电热水壶、咖啡机或者电炖盅。
  12. 一种线圈盘制造方法，其特征在于，包括如下步骤：
    将导电金属板置于第一模具中；
    在所述第一模具内注塑，以形成供所述导电金属板附着的支架；
    对所述导电金属板进行切割加工，使所述导电金属板形成按照预定绕线路径延伸的导电金属片。
  13. 根据权利要求12所述的线圈盘制造方法，其特征在于，在对所述导电金属板进行切割加工，使所述导电金属板形成按照预定绕线路径延伸的导电金属片步骤之后包括：
    将附着有导电金属片的支架置于第二模具中，在所述第二模具中注塑，以形成覆盖在所述导电金属片上的保护层。
  14. 根据权利要求12或13所述的线圈盘制造方法，其特征在于，在将所述导电金属板置于第一模具中之前，包括：
    对所述导电金属板进行冲压处理，使所述导电金属板与所述第一模具的形状相适配。
  15. 一种线圈盘制造方法，其特征在于，包括如下步骤：
    将导电金属片置于第三模具中，所述导电金属片按照预定的绕线路径延伸；
    在所述第三模具内注塑，以形成供所述导电金属片附着的支架。
  16. 根据权利要求15所述的线圈盘制造方法，其特征在于，在所述第三模具内注塑，以形成供所述导电金属片附着的支架步骤之后包括：
    将附着有导电金属片的支架置于第四模具中，在所述第四模具中注塑，以形成覆盖在所述导电金属片上的保护层。
  17. 根据权利要求15或16所述的线圈盘制造方法，其特征在于，在将导电金属片置于第三模具中之前，包括：
    对导电金属板进行刀具切割处理或者对导电金属板进行冲压切除处理，以形成按照预定绕线路径延伸的导电金属片。
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