Patent ID: 8803022

Claim:
A welding head for a welding device for welding a component which is not rotationally symmetrical onto a workpiece including a metal sheet, comprising: a head base; a head attachment connected to the head base by a drive device operable to move the head attachment with respect to the head base, the head attachment including: a holding device for temporarily holding the component for welding and carrying a welding current to the component; and a mouthpiece arranged to surround the component during a welding operation, the holding device and the mouthpiece movable in relation to each other along a welding axis; an interface device; a connecting device, the holding device mechanically connected by the connecting device to the interface device, the connecting device operating to supply the welding current, the connecting device subdivided into a first connection piece resiliently biased with respect to the drive device by a spring and a second connection piece electrically insulated from the first connection piece and connected to the mouthpiece; a coil device; a first welding cable connected to a connection point of the first connection piece and to the coil device permitting the welding current to be conducted from the interface device via the first connection piece into the coil device while being electrically insulated from the second connection piece; and an electrical insulating piece positioned between and electrically insulating the first and second connection pieces from each other, the electrical insulating piece positioned above the coil device outside of the mouthpiece.