Patent ID: 7011129
Filing Date: 2006-03-14
Classification: B29C,B65B,Y10T

Abstract:
1. A device for welding of a foil tube, comprising two welding jaws, which can be moved against one another and clamp the foil tube between one another, two jaw holders for holding each one welding jaw, each one jaw carrier for carrying of the jaw holders and thus the welding jaws, a linear drive with a movable part which can be moved linearly 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, and comprising each one joint on the jaw carriers in order to pivotally connect rods of the gearing to the jaw carriers, wherein the gearing has four rods, of which two inner rods are pivotally fastened through a stationary joint, and two outer rods are connected to an inner rod through each joint and a further joint to a jaw carrier, and that the movable part is connected to the inner rods through a connecting member in order to pivot during a movement of the movable part along an active line the inner rods and thus the jaw carriers away from one another or toward one another.