Pressure And Temperature Control of Multicavity Injection Mold With Hydraulic Valve Gate Hot Mold System
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-29
A sensing and control device is provided for a multiple cavity plastic injection molding system. A mold 10 is shown having a plurality of cavities 12. The cavities are each fed by a nozzle 14 which nozzles are connected to a manifold 18. The manifold receives the plastic material from a molding machine 20. The flow to each nozzle is regulated by a gatevalve 22 which valves are each connected to a shut off control 24 which are responsive to signals to open or close the gate. Each nozzle is provided with a temperature control 26. Each cavity is provided with a pressure sensor 28 and a temperature sensor 30.