Units blow molding machine blow molding step varible.

摘要

Assembly comprising molding units of polymer materials, these few units being arranged below the other in a mobile line, each comprising said molding units a mold, this mold comprising two movable parts with respect to each other about a hinge pin (60), intervening displacement of these two parts (30a, 30b) relative to each other when opening and closing the mold, characterized it occurs that the assembly comprises rollers (40) cooperating a cam (50), each of said rollers (40) connected by links (90) to the two pivot axes (60) of contiguous molding units, the trajectory described by the rollers (40) against cam (50) and the trajectory described by the articulation shafts (60) brought closer to each other on a predetermined course of the molding units, so that the distance between the axes of articulation recording (60) of the contiguous molding units is increased over this race.