Patent ID: 8288687

Claim:
An arc welding robot comprising: a robot pedestal; a rotating body rotatably mounted on the robot pedestal; an upper arm pivotally connected to the rotating body; a forearm which is pivotally connected to the upper arm; a wire feeding device for feeding welding wire, positioned at a rear part of the forearm; a welding torch for carrying out welding, attached to a front part of the forearm; a welding wire supply positioned around the robot; and a wire conduit connected between the welding wire supply and the wire feeding device, the welding wire being inserted into the wire conduit, wherein the robot pedestal comprises a bottom plate member arranged on an installation surface; two column members positioned on the bottom plate member and separated from each other by a certain distance; and a top plate member attached to upper ends of the two column members, the rotating body of the robot being fixed to the top plate member, wherein the two column members are connected to the bottom plate member and the top plate member, and the two column members cooperatively form a through hole, whereby the conduit extending from the welding wire supply may be fed toward a rotation axis of the rotating body through the through hole, wherein the conduit fed into one side of the through hole formed by the two column members is withdrawn from the other side of the through hole, is supported by a first support member arranged on an outside of the rotating body, and then is connected to the wire feeding device so as to present a generally S-shape, wherein the two column members are connected between the bottom plate member and the top plate member at a place where the two column members are offset toward the one side of the through hole from the rotation axis of the rotating body of the robot, wherein the first support member is arranged on a part of the rotating body opposed to the upper arm, wherein the conduit is further supported by a second support member arranged on the robot pedestal, and wherein the conduit, after passing through the second support member, extends in front of the rotating body, while being curved, and is introduced to the first support member.