Patent ID: 6726465
Filing Date: 2004-04-27
Classification: B29C

Abstract:
An injection molding machine utilizing a plasticizer, at least one mold for receiving plasticized material from the plasticizer, and at least one flow channel between the plasticizer and the at least one mold, the injection molding machine comprising,a plurality of gear pumps fluidly connected in the at least one flow channel between the plasticizer and the at least one mold, at least one of the gear pumps being separately powered for selectable non-synchronous movement relative to the other gear pumps, braking means connected to the separately powered at least one of the gear pumps, said braking means adapted to momentarily retard during each cycle of the injection molding machine the connected separately powered at least one of the gear pumps, wherein the plurality of gear pumps are located in parallel in a plurality of flow channels.