METHOD AND DEVICE FOR BLOW MOULDING CONTAINERS USING A SERVO MOTOR FOR THE DRAWING BAR

摘要

The invention relates to a method and a device for blow moulding containers (2). According to the invention, a preform (14) consisting of a thermoplastic material is drawn out by a drawing bar (11) after thermal conditioning inside a blow mould (4) and is shaped into the container (2) by a blowing pressure. The default positioning for the drawing bar is effected by an electromechanical drawing bar drive. A mechanical coupling device translates the rotational movement of a motor shaft (52) of a servo motor (49) into a lifting movement of the drawing bar (11).