Locking device for attaching demountable mold into e.g. blow molding tool, to produce plastic film tube, has piston valve designed such that valve is brought in contact with locking surface arranged on mold

摘要

The locking device (1) has a piston slidable in a cylinder. Pressure springs are provided for sliding the piston in a locked position, and a connector (20) guides pressure fluid to a side of the cylinder for sliding the piston in a release position. A connection part i.e. collar screw, is connected to the piston and to a piston valve. The connection part is guided through a wall of the cylinder. The piston valve is designed such that the valve is brought in contact with a locking surface arranged on a mold (7).