Wire feeders are
used to add filler metal during robotic welding. This allows
flexibility in establishing various welding wire feed rates to suit specific
requirements for an assembly. Normally, the wire feeder for robotic welding is
mounted on the robot arm, separate from the power supply. For robotic welding, a
control interface between the robot controller, the power supply and wire
feeder is needed. The wire feeding system must be matched to the welding process
and the type of power source being used.