Patent ID: 6896505
Filing Date: 2005-05-24
Classification: B29C

Abstract:
1. An injection molding press attached on opposed inside surfaces to a static and ejector frame, each frame supporting a mold assembly, the mold assembly comprising: (a) on the static frame side, a static cavity mold housing containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of a plastic element, a back side of the static cavity mold housing removably attached to a back plate to form a static mold assembly; (b) on the ejector frame side, an ejector cavity mold housing containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of a plastic element, a back side of the ejector cavity mold housing removably attached to an ejector back plate assembly to form an ejector mold assembly; (c) the static cavity mold housing and ejector cavity mold housing adapted to be removed from the back plate and ejector back plate assembly, respectively and replaced with a substitute cavity mold housing of the same geometric configuration without change to any other component and without connection to a water cooling port; (d) the static cavity mold housing and ejector cavity mold housing, each having a projecting angled yoke from a side surface engaging a slot in a runner bar at a front portion of the static frame side and ejector frame side, respectively so that the mold assemblies are inserted from a side of the injection molding press; and (e) the runner bar on the static frame having a pair of interlock pins projecting out of the front end, the ejector frame runner bar having a pair of bores passing therethrough for receipt of the interlock pins from the static frame.