Patent ID: 9370816
Filing Date: 2016-06-21
CPC Classification: B21C,B21F,H01F,Y10T

Claim Text:
1. An induction heating coil manufacturing apparatus comprising: a winding shaft comprising a quadrangular cross section and a corner, the winding shaft winds a wire around the winding shaft, the wire including stranded wires; a bending device that bends the wire at a predetermined position at which the wire is to be wound around the corner of the winding shaft so that the bent portion of the wire is predetermined to mate with the corner of the winding shaft before the winding shaft winds the wire at the position around the winding shaft; a wire supply unit that supplies the wire; and a feed unit that feeds the wire supplied from the wire supply unit to the bending device, wherein a controller controls the winding shaft so that the winding shaft rotates in accordance with a feed amount of the wire fed by the feed unit and winds the wire in so that the wire is not under tension between the winding shaft and the bending device.