Inventors:
G. Daniel Hilker - Fort Wayne IN
Verne H. Lausen - Fort Wayne IN
Jessie H. Coon - Fort Wayne IN
James E. Bodette - Fort Wayne IN
Jerry L. Grimes - Fort Wayne IN
Roger D. Wright - Fort Wayne IN
Donny R. Disque - Fort Wayne IN
Keith D. Bultemeier - Fort Wayne IN
Assignee:
Phelps Dodge Industries, Inc. - New York NY
International Classification:
B05D 512
B05D 126
Abstract:
A novel method and apparatus for manufacturing magnet wire in a continuous process by which coatings of a flowable resin material may be applied concentrically to a moving elongated filament in thicknesses of about 16 mils or less. The filament can be a bare copper or aluminum conductor having round or rectangular configuration or an insulated conductor upon which a top or an intermediate coat of material is desirably applied. Coatings of one-half mil and one mil also can be applied by the method of the invention. By the method and apparatus of the invention, magnet wire can be manufactured by continuously drawing the wire to size, annealing the wire, if necessary, insulating the wire with one or more coats of flowable resin material, curing the resin material, if necessary, hardening the resin material, and spooling the wire for shipment, without interruption at speeds limited only by the filament pay-off and take-up devices used. The apparatus of the invention utilizes the flowable resin material to center the filament in a die, the size of the die controls the thickness of the coat to be applied. In the apparatus of the invention, only the resin material being applied to the filament is in contact with the filament.