CN105934015B - Coil panel, preparation method thereof and cooking appliance - Google Patents
Coil panel, preparation method thereof and cooking appliance Download PDFInfo
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- CN105934015B CN105934015B CN201610323502.7A CN201610323502A CN105934015B CN 105934015 B CN105934015 B CN 105934015B CN 201610323502 A CN201610323502 A CN 201610323502A CN 105934015 B CN105934015 B CN 105934015B
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- copper matrix
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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
-
- 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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cookers (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The invention provides a coil panel, a preparation method thereof and a cooking appliance. The preparation method of the coil panel comprises the following steps: the disc body is formed by one-time injection molding; stamping the copper substrate into a shape matched with the disc body; bonding the punched copper substrate on the bottom surface of the tray body; and carrying out CNC machining on the bonded copper matrix so as to machine the copper matrix into a coil. Among the above-mentioned technical scheme, the adoption bonds stamping forming's copper base member on disk body bottom surface, and adopt the digit control machine tool to prepare the coil panel with the technology of copper base member processing coil, replace the tradition and adopt coiling enameled wire technology preparation coil panel, this coil panel is lighter and thinner than traditional coil panel, easily realize the flexibility of design and preparation, and only need change the machining route of digit control machine tool, can conveniently treat the structure of processing coil, the parameter such as shape changes, need not repair the mould, thereby the development cycle of product has been shortened, the yields of product is high, and effectively the cost is reduced.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a preparation method of a coil panel, the coil panel prepared by the preparation method and a cooking appliance comprising the coil panel.
Background
The heating coil of the existing small household appliance adopting an IH (electromagnetic heating) mode for heating, such as an induction cooker, an electric cooker or an electric pressure cooker, is manufactured in a mode of winding an enameled wire, the winding process is complex, the problems of poor manufacturing procedures such as wire jumping, scratching and short wire are easy to occur, and the form of the coil is very single.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Accordingly, a first aspect of the present invention is to provide a method for manufacturing a coil panel, in which the coil panel manufactured by the method is thin and light, and is easy to design and manufacture, and which can shorten a product development period, reduce a defective rate, and effectively reduce costs.
The second aspect of the present invention is to provide a coil disk manufactured by the above manufacturing method.
A third aspect of the present invention is directed to a cooking appliance comprising the coil disc described above.
To achieve the above object, an embodiment of a first aspect of the present invention provides a method of manufacturing a coil disc, including: 102, performing injection molding on the disc body at one time; 104, stamping the copper substrate into a shape matched with the disc body; 108, bonding the punched copper substrate on the bottom surface of the tray body; and 110, performing CNC machining on the bonded copper matrix to machine the copper matrix into a coil.
According to the preparation method of the coil panel provided by the embodiment of the invention, the copper matrix which is subjected to punch forming is bonded on the bottom surface of the panel body, and the coil panel is prepared by adopting the process of processing the copper matrix which is bonded on the bottom surface of the panel body into the coil by adopting a CNC (numerical control machine tool), so that the traditional coil panel prepared by adopting the process of winding the enameled wire is replaced, the coil panel prepared by the preparation method can be applied to products which cook food by adopting the electromagnetic induction principle, such as an electromagnetic oven, an electric cooker and an electric pressure cooker, and the coil panel is lighter and thinner than the traditional coil panel, and the design and the manufacturing flexibility are easy to realize; after the whole sheet or plate-shaped copper matrix is punched, the copper matrix is processed into the coil by the numerical control machine, and parameters such as the structure, the shape and the like of the coil to be processed can be conveniently changed only by changing the processing path of the numerical control machine without repairing a die, so that the development period of a product is shortened, and the cost is effectively reduced; the whole copper matrix is firstly bonded on the disc body in a bonding mode, and then the copper matrix is processed into a coil, so that the copper matrix is not easy to deform, and the product yield is high; moreover, the copper base body is adopted as the base material of the coil, the product stability is good, the thickness tolerance can be controlled within +/-0.05 mm, and the coil generates less heat because the copper is the material which is second only to the silver and has small second resistivity, thereby being beneficial to improving the working reliability of the coil panel and prolonging the service life of the coil panel.
It should be noted that the substrate for manufacturing the coil may also be made of other metal conductive materials, such as aluminum material, which have conductivity inferior to that of copper material, and only may cause the coil to generate heat greatly; the coil machined by CNC is not limited to a spiral shape, and the width, thickness, spacing, number of turns and shape of the coil can be changed according to the actual shape and requirements of the product, and the coil is within the protection scope of the invention as long as the coil does not depart from the design concept of the invention.
In addition, the method for manufacturing the coil panel provided by the above embodiment of the present invention further has the following additional technical features:
in the above technical solution, after the step 110, it is preferable that the method further includes: and 112, performing secondary injection molding on the disc body after CNC machining to seal the coil, and forming a dodging hole for the wiring terminal of the coil to penetrate out on the plastic.
The plastic of moulding plastics of secondary is carried out the disk body after carrying out the digit control machine tool processing for copper base member is whole not to expose, only needs to expose two binding post that are used for the wiring, makes the waterproof performance of product excellent, and plays the guard action to the coil, is favorable to promoting the operational reliability of coil panel, and prolongs the life of coil panel.
In the above technical solution, preferably, in the step 108, a primer is used to bond the punched copper substrate to the bottom surface of the tray body; wherein the primer is NQ-906AB glue, KEYDAK (KD-340) anoxic glue or G-988 elastic glue.
The primer with the type is adopted to bond the punched copper matrix on the bottom surface of the tray body so as to ensure the bonding firmness of the copper matrix on the bottom surface of the tray body, thereby ensuring that the bonding force of the copper matrix and the tray body is greater than the cutting force of next CNC (computerized numerical control) processing, and avoiding the situations that the copper matrix and the tray body are not firmly combined or even separated in the CNC processing process; of course, besides the primer, other types of primers can be used, but the bonding firmness of the copper substrate and the disc body needs to be ensured.
In the above technical solution, preferably, in the step 110, the width of the coil ranges from 1mm to 3mm, and a distance between two adjacent coils is 0.5mm to 2 mm.
The distance of 0.5 mm-2 mm is processed between two adjacent coils, so that the probability of short circuit caused by tight winding between the coils in the traditional technology is effectively reduced, and large-area uniform heating of a heated object and heat dissipation of the coil panel are facilitated.
In the above technical solution, preferably, in the step 102, a wire groove with a depth range of 0.5mm to 1mm is formed on the tray body.
The wire slot is formed on the tray body, and the primer is coated in the wire slot and then bonded, so that the coating uniformity of the primer is ensured, the tray body is firmly bonded with the copper substrate, and the copper substrate is conveniently processed into the coil matched with the wire slot along the wire slot.
In the above technical solution, preferably, in the step 104, the thickness of the copper matrix ranges from 0.2mm to 0.5 mm.
In the above technical solution, preferably, the copper substrate is made of beryllium copper.
Be beryllium copper material is adopted as the base member of preparation coil, because of its high conductivity, guarantees the heat dissipation of coil panel well.
In the above technical solution, after the step 104 and before the step 108, the method preferably further includes: and 106, performing sand blasting treatment on the top surface of the punched copper matrix, wherein the roughness of the top surface of the copper matrix after the sand blasting treatment is 2.5-5 microns.
After the copper matrix is punched, performing sand blasting treatment on one surface to be bonded so as to increase the roughness of the surface of the copper matrix and ensure that the adhesion between the copper matrix and the primer is better; preferably, the roughness of the top surface of the copper substrate after grit blasting is from 2.5 μm to 5 μm, although not limited to the above specific numerical range.
Embodiments of the second aspect of the invention provide a coil panel manufactured by the method for manufacturing a coil panel according to any one of the above embodiments.
According to the coil panel provided by the embodiment of the invention, the coil panel is thinner and thinner than the traditional coil panel, the stability of a product is good, the thickness tolerance can be controlled within +/-0.05 mm, and the copper matrix for manufacturing the coil is a material with second resistivity which is second only to silver and is small, so that the coil generates less heat, the working reliability of the coil panel is favorably improved, and the service life of the coil panel is prolonged; the coil panel can be widely applied to products for cooking food by adopting the electromagnetic induction principle, such as an induction cooker, an electric cooker and an electric pressure cooker.
The embodiment of the third aspect of the invention provides a cooking appliance, which comprises the coil panel of the above embodiment and has all the beneficial effects of the coil panel of the above embodiment, and the cooking appliance can be an electromagnetic oven, an electric cooker, an electric pressure cooker and other cooking appliances which cook in an electromagnetic heating mode.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block flow diagram of a method for manufacturing a coil disk according to an embodiment of the present invention;
FIG. 2 is a schematic block flow diagram of a method for manufacturing a coil disk according to another embodiment of the present invention;
FIG. 3 is a schematic structural view of the tray body according to an embodiment of the present invention;
FIG. 4 is a left side elevational view of the tray illustrated in FIG. 3;
FIG. 5 is a schematic diagram of a copper substrate stamped into a shape to fit a disk according to an embodiment of the invention;
FIG. 6 is a schematic view of a stamped copper substrate bonded to a tray according to one embodiment of the invention;
FIG. 7 is a schematic diagram of a coil formed from a copper substrate bonded to a disk according to one embodiment of the present invention;
fig. 8 is a structural diagram of a disc body processed into a coil, which is subjected to secondary injection molding of plastic according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 3 to 8 is:
10 disks, 101 wire grooves, 20 copper substrates, 30 coils, 301 connecting terminals and 40 plastics.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A method of manufacturing a coil disk, and a cooking appliance according to some embodiments of the present invention are described below with reference to fig. 1 to 8.
As shown in fig. 1 to 7, some embodiments of the present invention provide a method of manufacturing a coil disk, including the steps of:
102, performing injection molding on the disc body 10 at one time;
104, stamping the copper substrate 20 into a shape matched with the disc body 10;
step 108, bonding the punched copper substrate 20 on the bottom surface of the tray body 10;
and 110, performing CNC machining on the bonded copper matrix 20 to machine the copper matrix 20 into the coil 30.
According to the preparation method of the coil panel provided by the embodiment of the invention, the copper matrix which is subjected to punch forming is bonded on the bottom surface of the panel body, and the coil panel is prepared by adopting the process of processing the copper matrix which is bonded on the bottom surface of the panel body into the coil by adopting a CNC (numerical control machine tool), so that the traditional coil panel prepared by adopting the process of winding the enameled wire is replaced, the coil panel prepared by the preparation method can be applied to products which cook food by adopting the electromagnetic induction principle, such as an electromagnetic oven, an electric cooker and an electric pressure cooker, and the coil panel is lighter and thinner than the traditional coil panel, and the design and the manufacturing flexibility are easy to realize; after the whole sheet or plate-shaped copper matrix is punched, the copper matrix is processed into the coil by the numerical control machine, and parameters such as the structure, the shape and the like of the coil to be processed can be conveniently changed only by changing the processing path of the numerical control machine without repairing a die, so that the development period of a product is shortened, and the cost is effectively reduced; the whole copper matrix is firstly bonded on the disc body in a bonding mode, and then the copper matrix is processed into a coil, so that the copper matrix is not easy to deform, and the product yield is high; moreover, the copper base body is adopted as the base material of the coil, the product stability is good, the thickness tolerance can be controlled within +/-0.05 mm, and the coil generates less heat because the copper is the material which is second only to the silver and has small second resistivity, thereby being beneficial to improving the working reliability of the coil panel and prolonging the service life of the coil panel.
It should be noted that the coil formed by CNC processing is not limited to a spiral shape, and the width, thickness, pitch, number of turns and shape of the coil can be changed according to the actual shape and requirement of the product, and the coil is within the protection scope of the present invention as long as the coil does not depart from the design concept of the present invention.
In one embodiment of the present invention, as shown in fig. 2 and 8, the method for manufacturing the coil disk includes the steps of:
102, performing injection molding on the disc body 10 at one time;
104, stamping the copper substrate 20 into a shape matched with the disc body 10;
step 108, bonding the punched copper substrate 20 on the bottom surface of the tray body 10;
110, performing CNC (computer numerical control) machining on the bonded copper matrix 20 to machine the copper matrix 20 into a coil 30;
step 112, performing secondary plastic injection molding on the disc body 10 subjected to the CNC machining to seal the coil, and forming an avoidance hole for the wiring terminal 301 of the coil 30 to penetrate through on the plastic 40.
The plastic of moulding plastics of secondary is carried out the disk body after carrying out the digit control machine tool processing for copper base member is whole not to expose, only needs to expose two binding post that are used for the wiring, makes the waterproof performance of product excellent, and plays the guard action to the coil, is favorable to promoting the operational reliability of coil panel, and prolongs the life of coil panel.
Preferably, as shown in fig. 6, in step 108, a primer is used to adhere the punched copper substrate 20 to the bottom surface of the tray 10; wherein the primer is NQ-906AB glue, KEYDAK (KD-340) anoxic glue or G-988 elastic glue.
The primer with the type is adopted to bond the punched copper matrix on the bottom surface of the tray body so as to ensure the bonding firmness of the copper matrix on the bottom surface of the tray body, thereby ensuring that the bonding force of the copper matrix and the tray body is greater than the cutting force of next CNC (computerized numerical control) processing, and avoiding the situations that the copper matrix and the tray body are not firmly combined or even separated in the CNC processing process; of course, besides the primer, other types of primers can be used, but the bonding firmness of the copper substrate and the disc body needs to be ensured.
Preferably, as shown in fig. 7, in the step 110, the width of the coil 30 ranges from 1mm to 3mm, and the distance between two adjacent coils 30 ranges from 0.5mm to 2 mm.
The distance of 0.5 mm-2 mm is processed between two adjacent coils, so that the probability of short circuit caused by tight winding between the coils in the traditional technology is effectively reduced, and large-area uniform heating of a heated object and heat dissipation of the coil panel are facilitated.
Preferably, as shown in fig. 1, 3 and 4, in the step 102, a wire groove 101 with a depth h ranging from 0.5mm to 1mm is formed on the tray body 10.
The wire slot is formed on the tray body, and the primer is coated in the wire slot and then bonded, so that the coating uniformity of the primer is ensured, the tray body is firmly bonded with the copper substrate, and the copper substrate is conveniently processed into the coil matched with the wire slot along the wire slot.
Preferably, as shown in fig. 5, in the step 104, the thickness of the copper matrix 20 ranges from 0.2mm to 0.5 mm.
Preferably, the copper base 20 is beryllium copper.
Be beryllium copper material is adopted as the base member of preparation coil, because of its high conductivity, guarantees the heat dissipation of coil panel well.
In one embodiment of the present invention, as shown in fig. 2, the method for manufacturing the coil disk includes the steps of:
102, performing injection molding on the disc body 10 at one time;
104, stamping the copper substrate 20 into a shape matched with the disc body 10;
and 106, performing sand blasting on the top surface of the punched copper matrix 20, wherein the roughness of the top surface of the copper matrix 20 after the sand blasting is 2.5-5 microns.
Step 108, bonding the punched copper substrate 20 on the bottom surface of the tray body 10;
and 110, performing CNC machining on the bonded copper matrix 20 to machine the copper matrix 20 into the coil 30.
After the copper matrix is punched, performing sand blasting treatment on one surface to be bonded so as to increase the roughness of the surface of the copper matrix and ensure that the adhesion between the copper matrix and the primer is better; preferably, the roughness of the top surface of the copper substrate after grit blasting is from 2.5 μm to 5 μm, although not limited to the above specific numerical range.
An embodiment of a second aspect of the present invention provides a coil disk, as shown in fig. 7 and 8, manufactured by the method for manufacturing a coil disk according to any one of the above embodiments.
According to the coil panel provided by the embodiment of the invention, the coil panel is thinner and thinner than the traditional coil panel, the stability of a product is good, the thickness tolerance can be controlled within +/-0.05 mm, and the copper matrix for manufacturing the coil is a material with second resistivity which is second only to silver and is small, so that the coil generates less heat, the working reliability of the coil panel is favorably improved, and the service life of the coil panel is prolonged; the coil panel can be widely applied to products for cooking food by adopting the electromagnetic induction principle, such as an induction cooker, an electric cooker and an electric pressure cooker.
The embodiment of the third aspect of the present invention provides a cooking appliance (not shown in the drawings), which includes the coil panel of the above embodiment and has all the benefits of the coil panel of the above embodiment, and the cooking appliance may be an electromagnetic oven, an electric cooker, an electric pressure cooker, or other cooking appliances that cook in an electromagnetic heating manner.
In summary, according to the preparation method of the coil panel provided by the invention, the coil panel is prepared by bonding the copper matrix which is subjected to punch forming on the bottom surface of the panel body and processing the copper matrix which is bonded on the bottom surface of the panel body into the coil by adopting a CNC (numerical control machine tool), and the traditional coil panel prepared by adopting a wire winding and enamelling process is replaced, so that the coil panel is lighter and thinner than the traditional coil panel, the product stability is good, the coil heating is less, the working reliability of the coil panel is favorably improved, the service life of the coil panel is prolonged, and the design and the manufacturing flexibility are easily realized; the parameters such as the structure, the shape and the like of the coil to be processed can be conveniently changed only by changing the processing path of the numerical control machine tool without repairing a die, so that the development period of the product is shortened, the yield of the product is high, and the cost is effectively reduced; and the copper matrix is not exposed as a whole, and only two wiring terminals for wiring are required to be exposed, so that the waterproof performance of the product is excellent.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A method of making a coil disc, comprising:
102, performing injection molding on the disc body at one time;
104, stamping the copper substrate into a shape matched with the disc body;
106, performing sand blasting treatment on the top surface of the punched copper matrix, wherein the roughness of the top surface of the copper matrix after the sand blasting treatment is 2.5-5 microns;
108, bonding the punched copper substrate on the bottom surface of the tray body;
110, carrying out CNC machining on the bonded copper matrix to machine the copper matrix into a coil;
in the step 102, a wire casing with a depth range of 0.5mm to 1mm is formed on the tray body, so that the copper substrate can be processed into a coil matched with the wire casing along the wire casing;
and 112, performing secondary injection molding on the disc body after CNC machining to seal the coil, and forming a dodging hole for the wiring terminal of the coil to penetrate out on the plastic.
2. A method of manufacturing a coil disk according to claim 1,
in the step 108, a primer is adopted to bond the punched copper substrate on the bottom surface of the tray body; wherein the primer is NQ-906AB glue, KEYDAK (KD-340) anoxic glue or G-988 elastic glue.
3. A method of manufacturing a coil disk according to claim 1,
in the step 110, the width range of the coil is 1mm to 3mm, and the distance between two adjacent coils is 0.5mm to 2 mm.
4. A method of manufacturing a coil disk according to claim 1,
in the step 104, the thickness of the copper matrix ranges from 0.2mm to 0.5 mm.
5. A method of manufacturing a coil disk according to claim 4,
the copper substrate is made of beryllium copper.
6. A coil disk, characterized by being produced by the method for producing a coil disk according to any one of claims 1 to 5.
7. Cooking appliance, characterized in that it comprises a coil disc according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323502.7A CN105934015B (en) | 2016-05-13 | 2016-05-13 | Coil panel, preparation method thereof and cooking appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610323502.7A CN105934015B (en) | 2016-05-13 | 2016-05-13 | Coil panel, preparation method thereof and cooking appliance |
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| CN105934015A CN105934015A (en) | 2016-09-07 |
| CN105934015B true CN105934015B (en) | 2019-12-27 |
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| CN201610323502.7A Active CN105934015B (en) | 2016-05-13 | 2016-05-13 | Coil panel, preparation method thereof and cooking appliance |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109309978B (en) * | 2017-07-28 | 2021-05-25 | 佛山市顺德区美的电热电器制造有限公司 | Coil panel, manufacturing method thereof and electromagnetic cooking appliance with coil panel |
| CN109744848B (en) * | 2017-11-08 | 2021-09-28 | 佛山市顺德区美的电热电器制造有限公司 | Cooking utensil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082455A (en) * | 2015-09-01 | 2015-11-25 | 东莞劲胜精密组件股份有限公司 | Method for manufacturing 3D coil product and 3D coil product |
| CN105150452A (en) * | 2015-09-01 | 2015-12-16 | 东莞劲胜精密组件股份有限公司 | Manufacturing method for in-mold injection 3D coil product and 3D coil product |
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2016
- 2016-05-13 CN CN201610323502.7A patent/CN105934015B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082455A (en) * | 2015-09-01 | 2015-11-25 | 东莞劲胜精密组件股份有限公司 | Method for manufacturing 3D coil product and 3D coil product |
| CN105150452A (en) * | 2015-09-01 | 2015-12-16 | 东莞劲胜精密组件股份有限公司 | Manufacturing method for in-mold injection 3D coil product and 3D coil product |
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