Apparatus for the precise and rapid opening and closing of mould halves in a stretch blow-moulding machine for blow-moulding hollow bodies from a thermoplastic material

摘要

A device is disclosed for quickly and very precisely opening and closing the mold halves of a stretch blow molding machine for blow molding hollow bodies made of thermoplastic material. The mold halves are coupled to output rockers which are connected to drive rockers of a four-bar linkage, the frame pivot point of the four-bar linkage being arranged directly at the end of the molding joint. The drive rocker of the four-bar linkage is formed by cam cylinders which have cam curves and in which cam rollers of a control slide engage.