Welding head

A welding head for a welding device for welding a component onto a workpiece, 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 mouthpiece having a mouthpiece inner sleeve and a mouthpiece outer sleeve arranged concentrically thereto, the holding device and the mouthpiece movable in relation to each other along a welding axis;
• a connecting device subdivided into a first connection piece and a second connection piece electrically insulated from the first connection piece by an insulating piece, the connecting device operating to supply the welding current;
• and
• a coil device including a magnetic arc deflection coil positioned between the inner and outer sleeves of the mouthpiece and thereby surrounding the component, the coil device having at least one winding supplied with the welding current by a welding current cable carrying the welding current from the first connection piece to the coil device while being insulated from the second connection piece by the insulating piece, the welding current thereafter conducted by a second welding current cable also connected to the coil device and extending through a wall of the mouthpiece to a connection part of the second connection piece;
• a protective gas supply device positioned proximate the mouthpiece and having at least one nozzle connected at a lower portion of the mouthpiece extending through both the inner and outer sleeves of the mouthpiece and arranged to blast the component positioned within the inner sleeve of the mouthpiece tangentially with a protective gas such that the protective gas is always available to cover the welding area.

A welding head for a welding device for welding a component which can be non-rotationally symmetrical onto a metal workpiece, comprising:

• a head base;
• a head attachment connected 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;
• a coil positioned between inner and outer sleeves of the mouthpiece;
• first and second welding current cables, the first cable extending through the mouthpiece to supply the welding current to the coil and the second cable extending through the mouthpiece to transfer the welding current from the coil to the holding device;
• a protective gas supply device connected at a lower end of the mouthpiece, the protective gas supply device having a single supply channel which is led from outside the mouthpiece into an interior of the mouthpiece through both the inner and outer sleeves such that the protective gas flows tangentially onto a welding location of the component;
• the mouthpiece further including an outflow opening arranged at an upper end of the mouthpiece such that the protective gas exits upward from the upward end of the mouthpiece.