Patent ID: 8207475
Filing Date: 2012-06-26
Classification: B23K

Abstract:
1. A wire feeding unit for feeding a welding wire in a robot having a plurality of arm members including one arm member that is an elongated arm member which is elongated so as to define an axis of the arm member extending in the direction of elongation of the arm member, the arm member comprising a base end and a tip end at opposite sides of the arm member along the axis of the arm member, the wire feeding unit comprising: a body member mounted in the arm member so as to be freely pivotable in the arm member around the axis of the arm member; a torch cable mounted to the body member, the torch cable passing from the base end of the arm member through the inside of the arm member and being connected to a welding torch mounted at the tip end of the robot, wherein the welding wire is inserted through the torch cable; a feed roller mounted to the body member so as to be freely rotatable around an axis orthogonal to the axis of the arm member, wherein the welding wire passing through the body member is exposed out of the torch cable and is fed in a direction of the axis of the arm member by the rotation of the feed roller.