Patent ID: 6210144
Filing Date: 2001-04-03
Classification: B29C

Abstract:
A closing unit of a molding machine having (i) first and second platens which act as clamping plates for a mold, (ii) a displacement device for moving said first and second platens relative to each other, and (iii) a plurality of hydraulic force cylinders on said first platen to produce a closing force, each said force cylinder having a piston connected to a connecting rod for transmitting said closing force to said second platen, comprising:an actuator associated with said first platen for axially rotating said connecting rods between first and second angular positions;first locking means along said connecting rods; andsecond locking means on said second platen,said first and second locking means registering with each other in such a manner that in said first angular position said first and second locking means permit an axial displacement of said second platen relative to said connecting rods and in said second angular position, said first locking means engages said second locking means for the transmission of said closing force.