SHUT-OFF DEVICE AND METHOD FOR HOT RUNNER GATES

摘要

A valve gating method for injection molding systems that eliminates many commonly used elements and replaces commonly used methods which control melt flow from the machine nozzle to form the molten plastic part. This gating method applies to two of the most commonly used molding systems: Hot and Insulator runners. The gate channels) of the hot runner or insulator runner systems is or are moved laterally (sliding) in any direction against the cavity gate(s), creating the opening and closing of the gate(s), and controlling melt flow into the cavity or cavities. The concept can also be reversed (or inverted) so that the cavity gate(s) can be moved laterally in any direction against the channel of the hot or insulator runner systems. This new design prevents generation of waste material and eliminates the formation of cold plugs.