Abstract: Provided is a multi-jointed welding robot that includes: a rotating part that is rotatably provided on a base that is fixed to an installation surface; and a multi-jointed arm that is coupled to the rotating part via a first driving shaft and has a plurality of arm parts. An opening is formed in the rotating part through which a routing member, which is routed inside the rotating part, is guided from part of the rotating part toward the side opposite the installation surface. A guide member guides the routing member, which has one end fixed to the opening and which is guided through the opening, toward the installation surface from the other end of the routing member while bending the routing member.

Abstract: An arc-point adjustment rod attachment structure includes: a torch support part that includes a base-end-side attachment part which is fixed to a robot distal-end shaft part of an articulated welding robot, and that supports a welding torch; and an adjustment rod attachment part that is disposed on the welding torch side of the base-end-side attachment part, and that detachably supports the arc-point adjustment rod.