Patent ID: 8567466

Claim:
Welding carriage ( 1 ) movable in two opposite directions of travel ( 4 , 5 ) comprises a welding device ( 17 ) comprising a welding nozzle ( 16 ) for welding two overlapping webs of material (a, b; b, c) and a pressing device ( 13 ) for applying pressure to an upper web of material (a, b) after the welding operation, wherein the welding carriage ( 1 ) is operable in both directions of travel ( 4 , 5 ), wherein the welding nozzle ( 16 ) is adjustable between two welding positions (S 1 , S 2 ) located on opposite sides of the pressing device ( 13 ) in the directions of travel ( 4 , 5 ), whereby in each direction of travel ( 4 , 5 ) the welding nozzle ( 16 ) can be arranged ahead of the pressing device ( 13 ), wherein the welding nozzle ( 16 ) is adjustable together with the welding device ( 17 ); and further comprising means for adjusting the welding nozzle ( 16 ) together with the welding device ( 17 ) which comprises an adjusting mechanism ( 18 ) for adjusting the welding nozzle ( 16 ) along as well as orthogonal to a first axis ( 19 ) arranged parallel to the directions of travel ( 4 , 5 ) and which is swivelable about the first axis ( 19 ) or a second axis parallel to the first axis.