CN101728021A

CN101728021A - Method for manufacturing winding wire

Info

Publication number: CN101728021A
Application number: CN200810201569A
Authority: CN
Inventors: 沈刚; 方澄秋
Original assignee: Shanghai Chuanye Electronic Science and Technology Co Ltd
Current assignee: Shanghai Chuanye Electronic Science and Technology Co Ltd
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2010-06-09

Abstract

The invention relates to a method for manufacturing a winding wire, which comprises the steps of: drawing a copper rod with a diameter of phi 3mm to be between phi 0.10 and phi 0.19mm through a wire drawing machine to obtain a copper conductor; then performing annealing and painting to obtain an enameled wire; and then extruding polyester insulation resin outside the enameled wire through a single-screw extruder to obtain the winding wire. Compared with the prior art, the method is simple; and an obtained winding wire product can replace conventional enameled wires to be applied to transformers and high-frequency winding coils to ensure that the transformers and the high-frequency winding coils have compact structures and reduced cost.

Description

A kind of manufacture method of winding wire

Technical field

The invention belongs to the enamelled wire technical field, it is applied to transformer and the high frequency winding coil that safety standard meets UL1950, IEC60950, relates in particular to the manufacture method of a kind of winding wire that is used for transformer.

Background technology

At present, be used in the enamelled wire on the transformer, be made up of copper conductor and insulating barrier, enamelled wire voltage is low, needs interlayer insulating film and inner frame baffle plate, makes transformer do very greatly, can not satisfy the requirement of electronic transformer miniaturization, high frequency.

Summary of the invention

Purpose of the present invention is exactly to replace existing enamelled wire product to be used for the manufacture method of the winding wire of transformer in order to provide a kind of.

Purpose of the present invention can be achieved through the following technical solutions:

A kind of manufacture method of winding wire, it is characterized in that, this method adopts Φ 3mm copper bar to make copper conductor through the wire drawing machine drawing-down to Φ 0.10～0.19mm, and enamelled wire is made in the japanning of annealing then, by single multiple screw extruder polyester insulated resin is extruded in the enamelled wire outside again and obtains winding wire.

Compared with prior art, the inventive method is simple, the winding wire product that obtains can save interlayer insulating film and inner frame baffle plate as transformer and high frequency winding coil, make primary and secondary winding close coupling, but transformer reduced volume 1/2 and reduction weight 1/3, can save fee of material and processing charges, and obviously reduce leakage inductance and distributed capacitance, significantly improve the high frequency characteristics of transformer.Product of the present invention can replace existing enamelled wire to be applied to transformer, can make its structure compact more.

Description of drawings

Fig. 1 is the structural representation of winding wire of the present invention;

Fig. 2 is the cross section structure schematic diagram of winding wire of the present invention;

Among the figure: 1---copper conductor, 2---the coat of paint, 3---polyester insulated resin bed.

Embodiment

A kind of manufacture method of winding wire, this method adopts Φ 3mm copper bar to make copper conductor through the wire drawing machine drawing-down to Φ 0.10～0.19mm, enamelled wire is made in the japanning of annealing then, by 20 type list multiple screw extruders polyester insulated resin is extruded in the enamelled wire outside again and obtains winding wire.

The performance of the winding wire that is used for transformer that the inventive method obtains is:

1. production specification scope: 0.10～0.19mm;

2. temperature resistant grade E level (120 ℃) and B level (130 ℃);

3. voltage-resistent characteristic is good, and puncture voltage obtains basis insulation (test voltage 1500Vrms, evaluation 1min) greater than 10kV;

4. need not just can directly weld by peeling outer layer 420 ℃≤2S of solderability;

5. good resistance to wear and surface smoothness, confficient of static friction≤0.133;

6. chemically-resistant solvent and impregnating varnish performance are good.

The GPX-1B winding wire and the common UEW Polyurethane enameled wire performance that are used for transformer are more as shown in table 1.

Table 1

Claims

1. the manufacture method of a winding wire, it is characterized in that, this method adopts Φ 3mm copper bar to make copper conductor through the wire drawing machine drawing-down to Φ 0.10～0.19mm, and enamelled wire is made in the japanning of annealing then, by single multiple screw extruder polyester insulated resin is extruded in the enamelled wire outside again and obtains winding wire.