Patent ID: 6640836
Filing Date: 2003-11-04
Classification: B21F

Abstract:
A coil formation device for forming coils having a generally helical coil body, a non-helical coil head, and a terminal convolution generally smaller than the coil body, the coil formation device comprising:a wire feed mechanism which feeds wire stock into a coil forming block, the coil forming block having a cavity within which a terminal convolution of the coil is formed, a coil radius forming wheel against which wire stock bears to form a generally helical shape to the coil body, a helical guide pin in contact with the wire stock and operative to move relative to the forming block to form a generally helical shape to the coil body, a wire cutting tool configured to cut the wire stock within the cavity of the coil forming block, a geneva for transferring a coil from the coil forming block to a coil head forming station, the coil head forming station having a coil head formation die, the coil head formation die having a cavity configured to receive a terminal convolution of the coil, and a flange proximate to the cavity about which an end turn of the coil body is positioned by the geneva, and at least one punch operative to strike the end turn of the coil body against the flange of the coil head formation die to form a coil head between the coil body and the terminal convolution.