INJECTION MOLDING MACHINE AND BURR FAILURE SUPPRESSION METHOD

To mold with an appropriate clamping force that does not cause burr defects and reduces energy by adjusting the clamping force of the mold based on the mold displacement, peak injection pressure, and the most advanced injection position when molding with an injection molding machine.SOLUTION: During automatic operation, the amount of mold displacement is monitored, as well as the injection peak pressure and the injection most forward position. If no mold displacement change exceeding a threshold value occurs, or if no injection peak pressure abnormality exceeding a threshold value and no injection most forward position abnormality occur, automatic operation is continued, and if a mold displacement change occurs, or if an injection peak pressure abnormality and an injection most forward position abnormality occur, operation of the injection molding machine is stopped.SELECTED DRAWING: Figure 4 【課題】射出成形機にて成形を行なうに際し、金型の型変位、または、射出ピーク圧や射出最前進位置に基づいて金型の型締力を調整して、バリ不良が生じず、エネルギーが低減できる適正な型締力にて成形を行なう。【解決手段】自動運転中に型変位量を監視するとともに、射出ピーク圧と射出最前進位置とを監視して、閾値を越える型変位変化が発生しない場合、または、閾値を越える射出ピーク圧異常と射出最前進位置異常が発生しない場合は、自動運転を継続し、型変位変化が発生し、または、射出ピーク圧異常と射出最前進位置異常が発生した場合は、射出成形機の稼動を停止するようにした。【選択図】図４