Patent ID: 7036293

Claim:
A device for welding of a foil tube, comprising two welding jaws, which are movable against one another and clamp the foil tube between one another, two jaw holders, each for holding one welding jaw, two jaw carriers to carry the jaw holders and thus the welding jaws, a linear drive with a part which is linearly movable along an active line and a stationary part, a gearing connected to the movable part, whereby the gearing is connected to the jaw carriers in order to create an opposing movement of the jaw carriers and thus of the welding jaws, and in order to be able to move the welding jaws toward one another and away from one another, wherein the gearing comprises a cam plate connected to the movable part, that the cam plate has two separate curves, and that a cam is connected to each jaw carrier and is guided along one of the two curves.