WELDING MACHINE

摘要

An internal pipe welding machine (10) including at least one welder assembly (50) rotatable relative to a chassis (11) of the internal pipe welding machine for welding a joint between a pipeline (1) and a pipe (3), the welder assembly being supplied by a cable (385) which carries at least one of a welding current and a control signal and a cable slack adjuster for taking up slack in the cable including a first disc arrangement having at least a first disc (924) rotatably mounted on a first pivot, the first pivot (929) being fixed relative to the internal pipe welding machine chassis, and a second disc arrangement having at least a second disc (925) rotatably mounted on a second pivot (930), the second pivot (930) being moveable relative to the chassis, the cable being wound around the at least one first and the at least one second disc, with the cable slack being taken up by movement of the first disc arrangement relative to the second disc arrangement.