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Method for making insulated stranded wire

A manufacturing method and stranded wire technology, applied in the direction of insulated conductors, insulated cables, organic insulators, etc., can solve the problems of miniaturization of electronic components, high frequency, low voltage of enameled wire stranded wires, large high-frequency coils, etc., to achieve Reduce leakage inductance and distributed capacitance, reduce volume, and achieve good high-frequency performance

Inactive Publication Date: 2010-06-09
上海旌缘科技股份有限公司
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Problems solved by technology

[0002] The enameled wire stranded wire currently used on high-frequency coils is composed of copper conductors and insulating layers. The enameled wire stranded wire has low voltage, many pinholes, and poor wear resistance. It is necessary to set up an interlayer insulating layer and an inner skeleton baffle, so that The high-frequency coil is made too large, which cannot meet the requirements of miniaturization and high-frequency of electronic components

Method used

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  • Method for making insulated stranded wire
  • Method for making insulated stranded wire

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Embodiment Construction

[0008] The present invention will be further described below in combination with specific embodiments.

[0009] A method for manufacturing insulated stranded wires. The method adopts a Φ3mm copper rod to be thinned by a wire drawing machine and then annealed and painted to make enameled wires. The machine sequentially extrudes two layers of polyester insulating layers on the outside of the enamelled stranded wire, and finally extrudes the polyamide resin insulating layer on the outside of the two layers of polyester extruded insulating layers.

[0010] The performance of the three-layer insulated twisted wire used for high-frequency coil obtained by the present invention:

[0011] 1. Good wear resistance, smooth surface, suitable for high-speed winding;

[0012] 2. It has outstanding voltage resistance performance and can withstand voltage between layers. Using this stranded wire can remove the inner skeleton baffle and isolation layer of the transformer, so that there is no ...

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Abstract

The invention relates to a method for making an insulated stranded wire, comprising the following steps of: annealing and painting a copper rod with the diameter of 3 mm after fine-drawing the copper rod by a wire drawing machine to form an enameled wire, stranding the enameled wire to form an enameled stranded wire, then sequentially extruding and wrapping two polyester insulation layers outside the enameled stranded wire through a three-head plastic extruding machine, and finally extruding and wrapping polyamide resin insulation layers outside the two extruded and wrapped polyester insulation layers. Compared with the prior art, the insulated stranded wire has the advantages of replacing the enameled wire and the stranded wire and ensuring that a high-frequency coil has small size and favorable high frequency.

Description

technical field [0001] The invention belongs to the technical field of enameled wire stranded wire (Litz), which is applied to transformers and high-frequency winding coils whose safety standards comply with UL1950 and IEC60950, and in particular relates to a manufacturing method of insulated stranded wire. Background technique [0002] At present, the enameled wire stranded wire used on high-frequency coils is composed of copper conductors and insulating layers. The enameled wire stranded wire has low voltage, many pinholes, and poor wear resistance. It is necessary to install interlayer insulating layers and inner skeleton baffles to make The high-frequency coil is made too large, which cannot meet the requirements of miniaturization and high-frequency of electronic components. Contents of the invention [0003] The object of the present invention is to provide a method for manufacturing an insulated stranded wire that can replace the existing enameled wire stranded wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/14H01B13/16H01B7/02H01B3/30
Inventor 沈刚方澄秋
Owner 上海旌缘科技股份有限公司
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