Patent ID: 7218990
Filing Date: 2007-05-15
Classification: B29C

Abstract:
1. A control device for use in an injection molding machine, the injection molding machine including a barrel having an injection nozzle disposed at a forward end of the barrel, the barrel containing an injection screw rotatably and retractably from the injection nozzle, the barrel having heaters arranged on an outer circumference of the barrel, the heaters being configured to heat and melt synthetic resin material input through a rear part of the barrel, wherein the barrel pushes the molten resin to the forward end by the rotation of the injection screw, and injects the molten resin through the injection nozzle, the control device comprising: a temperature control section configured to control temperatures of parts of the barrel to predetermined temperature values by controlling the heaters; a shift minus temperature set memory which sets a shift minus temperature to uniformly lower the control temperatures of the parts; a shift absolute temperature set memory which sets a shift absolute temperature to lower the control temperatures of the parts to a predetermined temperature; and a selection means which selects the temperatures set in the temperature set memories to lower the temperature of the parts controlled by the temperature control section.