Rotary plastic blow molding machine.

摘要

A rotary plastic blow molding machine (10) includes a rotary wheel (14) mounted on a base (12) and having a plurality of mold stations (30) with mold supports (34) that are mounted by inner and outer slide supports (32a,32b) and moved by an operating cam mechanism (56) in association with a lock mechanism (62) and an unlocking cam mechanism (64) to provide blow molding of an extruded parison. The inner and outer slide supports (32a,32b) are preferably aligned radially with respect to the rotational axis of the wheel (14) and the operating cam mechanism preferably includes a pair of gas springs (98) for providing uniform pressure in the closing of the mold supported by the mold supports (34). A mold recompression mechanism (128) removes mold closing pressure from the lock mechanism (62) prior to operation of the unlocking cam mechanism (64) in preparation for mold opening after completion of the blow molding cycle.