Patent ID: 6158646
Filing Date: 2000-12-12
Classification: B21C

Abstract:
A weld bead chopper for use in combination with a scarfing tool which is intended to scarf a longitudinal weld bead from a tube, said chopper having a) a moving and a stationary blade, the cooperating and chopping surfaces of which are a short distance from the weld bead, wherein the motion of the moving blade is in a plane which is perpendicular to a line which passes through a longitudinal axis of the tube and the weld bead, and b) an enclosed throat which has walls to guide a scarfed weld bead towards the cooperating chopping surfaces, said throat having a first guide adjacent to the scarfing tool, for directing scarfed weld bead towards a second guide which faces the scarfing tool and is adapted to guide the scarfed weld bead towards the cooperating chopping surfaces, and wherein the enclosed throat has a cross-sectional area substantially larger than the cross-sectional area of the scarfed weld bead and having a mouth which is sufficiently small to prevent the scarfed weld bead from exiting from a mouth of the throat.