FLUIDIC SENSING FOR MOLDING SYSTEM

摘要

An injection molding system for forming elongated thermometer covers having a metal tip employs fluidic sensing and fluidic control logic to provide alarm signals that prevent loading of molding compound into the mold cavity when the insert in one or more of a group of mold cavities is not properly seated and also prevent closing of the mold and insertion of an insert bearing mandrel when all inserts of a previous operation have not been withdrawn from the cavities. A vacuum drawn upon the hollow mandrels retains the insert in place upon the end of the mandrel, cools the mandrels, and cooperates with the fluid sensing devices to indicate the presence or absence of the inserts.