METHOD OF DETERMINING MELT FLOW FRONT TRAVEL USING INJECTION MELT PRESSURE AND SCREW POSITION TO GENERATE AN OUTPUT AND CONTINUOUSLY MONITOR CHECK RING REPEATABILITY

• Main Authors: Lawless, III, William Francis, Stiefel, Ethan David, Burns, Brian Matthew, Collins, Bryler, Birchmeier, Brandon Michael, Altonen, Gene Michael
• Format: Patent
• Language: English
• Published: 10.10.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method of determining melt flow front travel in a molding apparatus includes setting a sensor threshold, receiving a sensor amount as an output from a sensor monitoring a nozzle of the molding apparatus, and determining that the sensor amount exceeds the sensor threshold. The method further includes receiving a screw location, calculating a travel distance of the screw from the screw location, and calculating melt flow front travel based on the travel distance of the screw. The method further includes receiving, via an interface, an operator generated value for the desired melt flow front travel to be reached, and sending, via an interface, an analog or digital output after the operator generated value has been reached. A method of detecting a leaking condition of a check valve is also included.