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Method of manufacturing coil disk and the coil disk

A manufacturing method and coil disk technology, applied in the direction of electric heating devices, electrical components, ohmic resistance heating, etc., can solve the problems of reduced bonding force, peeling damage, complicated winding, etc., and achieve the effect of enhancing bonding force and improving service life

Inactive Publication Date: 2017-12-01
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coil disk is an important part to realize IH heating. The common coil disk is formed by winding a copper coil on a plastic support, but this method of winding is more complicated, and it is prone to problems such as wire jumping and scratches.
Another way is to first form a copper sheet extending along a predetermined path by stamping, etc., and then attach the copper sheet to the plastic body by injection molding. The thermal expansion coefficients of plastics are different, and the bonding force between the two will gradually decrease with the use of the coil disc, and finally peeling damage will occur, making the product unusable

Method used

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  • Method of manufacturing coil disk and the coil disk
  • Method of manufacturing coil disk and the coil disk
  • Method of manufacturing coil disk and the coil disk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Stamping the conductive metal plate placed in the stamping die to obtain a conductive metal sheet extending along a predetermined winding path.

[0101] Place the conductive metal sheet in a sodium hydroxide solution with a mass concentration of 1%, and wash it with alkali for 1.5 minutes, wherein the temperature of the alkali wash is controlled at 37°C.

[0102] The conductive metal sheet was placed in a nitric acid solution with a mass concentration of 2%, and pickled for 3 minutes, wherein the pickling temperature was controlled at 39°C.

[0103] Place the conductive metal sheet in the surface treatment solution at a temperature of 58°C for 26 minutes of surface treatment. Wherein, the surface treatment liquid is a mixed solution of copper chloride and hydrochloric acid, the content of copper chloride dihydrate is 400g / L, and the content of 10% hydrochloric acid is 31ml / L.

[0104] The conductive metal sheet is placed in pure water, rinsed, and then dried.

[0105]...

Embodiment 2

[0109] Punch the unrolled conductive metal roll to obtain a bowl-shaped conductive metal plate.

[0110] Place the conductive metal plate in a sodium carbonate solution with a mass concentration of 20%, and wash it with alkali for 1 min, wherein the temperature of the alkali wash is controlled at 43°C.

[0111] The conductive metal plate was placed in a nitric acid solution with a mass concentration of 2%, and pickled for 2.5 minutes, wherein the pickling temperature was controlled at 39°C.

[0112] Place the conductive metal plate in the surface treatment solution at a temperature of 61°C for 30 minutes of surface treatment. Wherein, the surface treatment solution is a mixed solution of copper chloride, hydrochloric acid and sodium chloride, wherein the content of copper chloride dihydrate is 200g / L, the content of 5% hydrochloric acid is 100ml / L, and the content of sodium chloride is 200g / L.

[0113] The conductive metal plate was placed in pure water, rinsed, and then dri...

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Abstract

The invention discloses a method of manufacturing a coil disk and the coil disk. The method at least includes the steps of: carrying out surface treatment of a conductive metal member: placing the conductive metal member in a surface treatment solution so as to form a plurality of nanopores in the surface of the conductive metal member and form a binding layer on surfaces of the nanopores; shaping of a coil disk carrier: performing injection moulding to the conductive metal member in an injection mold to shape the coil disk carrier that supports the conductive metal member, wherein the coil disk carrier, during the injection moulding, is embedded into the nanopores in one side surface of the conductive metal member and is fixedly connected to the binding layer. By means of the technical scheme, nanopores are formed in the surface of the conductive metal member, so that the binding force between the conductive metal member of the coil disk and the coil disk carrier is enhanced, thus increasing service life of the coil disk.

Description

technical field [0001] The invention relates to a manufacturing method of a coil disk and the coil disk. Background technique [0002] At present, the IH heating method has been more and more widely used in induction cookers, electric pressure cookers, rice cookers, and even cooking appliances such as soybean milk machines and electric kettles. The coil disk is an important part to realize IH heating. The common coil disk is formed by winding a copper coil on a plastic support, but this method of winding is more complicated, and it is prone to problems such as wire jumping and scratches. Another way is to first form a copper sheet extending along a predetermined path by stamping, etc., and then attach the copper sheet to the plastic body by injection molding. The thermal expansion coefficients of the plastics are different, and the bonding force between the two will gradually decrease with the use of the coil disc, and finally peeling damage will occur, making the product u...

Claims

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Application Information

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IPC IPC(8): B29C45/14H05B6/12
CPCB29C45/14795B29C2045/14868H05B6/12H05B2206/02
Inventor 杨玲曹达华
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD