METHOD FOR CALCULATING PRESSURE HISTORY OF TIP OF NOZZLE IN CONSIDERATION OF CHARACTERISTIC OF MOLDING MACHINE, METHOD FOR SIMULATING INJECTION MOLDING, AND ITS PROGRAM

• Main Author: YAMAGATA HIROAKI
• Format: Patent
• Language: English
• Published: 02.12.2003
• Edition: 7
• 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

PROBLEM TO BE SOLVED: To provide a means for calculating conditions for simulating an injection molding process by estimating the pressure history of the tip of a nozzle from the set value of an injection molding machine in consideration of the problem that although it is necessary to allot analytical conditions to a resin inflow opening when the injection molding process is simulated, since there is a large difference between an injection pressure and a nozzle tip pressure, it is difficult to allot correct conditions. SOLUTION: The means includes a part 1 which measures the relationship between the set value of the injection molding machine and the nozzle tip pressure in advance and calculates the pressure history of the tip of the nozzle from the set value and part 2 which simulates a molding including a sprue runner by allotting the pressure history of the tip of the nozzle in the resin inflow opening as the molding conditions to a model for simulating the injection molding process. COPYRIGHT: (C)2004,JPO