CN201435241Y - Improved polyurethane enameled flat copper wire - Google Patents

Abstract

The utility model provides an improved polyurethane enameled flat copper wire, which not only has good high frequency resistant performance, easy coloring performance, moisture-resistant performance and high mechanical strength, and is suitable for producing large-specification wires. The improved polyurethane enameled flat copper wire comprises a flat bared copper wire and is characterized in that a modified polyurethane paint layer is coated outside the flat bared copper wire.

Description

A kind of polyurethane flat enamelled copper wire of improvement

(1) technical field

The utility model relates to the enameling copper strap wire field, is specially a kind of polyurethane flat enamelled copper wire of improvement.

(2) background technology

Be widely used at present on household electrical appliances, precision instrument, telecommunication and the instrument the polyurethane enamelling cuprum round line its adopt conventional polyurethanes lacquer, has straight weldering, anti-high frequency performance is good, easy coloring, anti-moisture performance is good, but its mechanical strength and heat resistance are poor, and it is also relatively poor to produce the pliability and the tack of big gauge wire, so the specification great majority of this production are the following small dimension circle lines of Φ 2.00mm; And the take all of enamelling process of line of polyurethane paint adopted the japanning of felt method in the past, and its shortcoming is that line is difficult for reaching consistent with film thickness between the line; Can not use full-bodied insulating varnish, it is many to consume solvent, and the japanning felt is subjected to down the fire door high-temperature baking, and felt is worn out reduction of service life, and operative skill requires high, and the product quality consistency is poor; Still there is not polyurethane flat enamelled copper wire in the market.

(3) summary of the invention

At the problems referred to above, the utility model provides a kind of polyurethane flat enamelled copper wire of improvement, and it not only has good anti-high frequency performance, easy coloring performance and anti-moisture performance, and its mechanical strength height is fit to produce big gauge wire.

A kind of polyurethane flat enamelled copper wire of improvement, it comprises bare copper flat wire, it is characterized in that: described bare copper flat wire outside scribbles modified polyurethane paint.

The utility model replaces conventional polyurethanes lacquer in the past with modified polyurethane paint, has improved the paint film tack, has improved mechanical strength; And modified polyurethane paint can adopt the die methods enamelling process, it is simple to operate, can guarantee the uniformity consistency of film thickness, satisfy the requirement of high-rating generator to the enameled sheet wire size, the use amount of solvent is little, can reach the purpose of energy-saving and emission-reduction, the useful life of mould is also higher, has saved production cost.

(4) description of drawings

Fig. 1 is the polyurethane flat enamelled copper wire cross-sectional view of the utility model improvement;

The polyurethane flat enamelled copper wire processing mold method japanning schematic diagram of Fig. 2 the utility model improvement;

Fig. 3 is that the A of Fig. 2 is to schematic diagram;

Fig. 4 is the polyurethane flat enamelled copper wire processing process figure of the utility model improvement.

(5) embodiment

See Fig. 1, the polyurethane flat enamelled copper wire of a kind of improvement of the utility model, it comprises bare copper flat wire 1, bare copper flat wire 1 outside scribbles modified polyurethane paint 2.

Specifically describe the polyurethane flat enamelled copper wire processing process of the utility model improvement below: see Fig. 4; produce oxygen-free copper bar with electrolytic copper material by up-drawing method; then oxygen-free copper bar is made bare copper flat wire by continuously extruded machine work and by polishing; water steam protection annealing again; then paint, at last baking.Wherein, the die methods enamelling process is adopted in japanning, see Fig. 2, Fig. 3, japanning mould 4 is connected on the japanning mould fork 5, it leaves flying height all around on japanning mould fork 5, japanning mould fork 5 is installed on the mould fork fixed mount 3, lead 6 is from bottom to top through entering the nib of japanning mould 4 with high viscosity lacquer liquid behind the lacquer cylinder 7, exert pressure around giving nib, owing to be the inclined-plane horn mouth around the nib, pressure is with the generation transverse component, when downward longitudinal force during greater than mould gravity, mould just in flying height on float, be pressed in around mould 4 nibs with advancing transverse component, when nib and lead decentraction, this transverse pressure can make mould move, till nib and lead are concentric, guaranteed the uniformity consistency of paint film.

The polyurethane flat enamelled copper wire of the utility model improvement can be according to the requirement of temperature resistant grade requirement and specification size, can produce the polyurethane flat enamelled copper wire of corresponding grade, as 130 grades of polyurethane flat enamelled copper wires, 155 grades of polyurethane flat enamelled copper wires and 180 grades of polyurethane flat enamelled copper wires.

Claims (1)

1, a kind of polyurethane flat enamelled copper wire of improvement, it comprises bare copper flat wire, it is characterized in that: described bare copper flat wire outside scribbles the modified polyurethane enamelled coating.

Images