Stack injection molding machine

Abstract

An injection molding machine () having a stack mold () for producing injection molded parts comprises a fixed exterior molding part (), a central block (), as well as a mobile exterior molding part (), with molding cavities being formed between the molding areas () at the interior sides of the exterior molding parts () and molding areas () at opposite exterior sides of the central block (). The central block () is supported rotationally or pivotally and at two exterior surfaces, adjacent to each other in the rotational or pivotal direction, molding areas () are provided for first partial pre-molds () and at the two other exterior surfaces, adjacent to each other, molding areas () for second partial pre-molds (). The two exterior molding parts () each include molding areas () for one of the two partial pre-molds () and, off-set in the rotary or pivotal direction in reference to the exterior molding parts (), at least one gripper () each is provided for removing and holding a partial pre-mold () and for positioning a previously removed first partial pre-mold () to be interconnected to a second partial pre-mold (.) Alternatively the grippers for removing and holding a partial pre-mold () and for inserting a previously removed first partial pre-mold () is provided in a molding area () for second partial pre-molds () of the central block (.)