射出成形機等の油圧駆動制御方法および装置

Hydraulic drive control method for injection molding machine and apparatus therefor

Abstract

PROBLEM TO BE SOLVED: To perform the control of linear ejection quantity within a range of almost 0-100% with respect to the max. ejection quantity at the time of driving of all of hydraulic pumps while achieving hydraulic drive control as well as the reduction of energy loss and the conservation of power consumption with high accuracy in the hydraulic drive control of an injection molding machine or the like. SOLUTION: A plurality of constant ejection quantity hydraulic pumps PF1, PF2 different in ejection quantity are selected or combined to be driven to obtain necessary ejection quantities of pressure oil and, by controlling the number of rotations of an electromotor within a range of almost 50-100%, the control of linear ejection quantity is performed within a range of almost 0-100% with respect to the max. ejection quantity at a time of the driving of all of the constant ejection quantity hydraulic pumps. COPYRIGHT: (C)1999,JPO
(57)【要約】 (修正有) 【課題】 全油圧ポンプの駆動時における最大吐出量に 対しほぼ0%から100%の範囲内で直線的な吐出量の 制御を行うことができると共に、高精度の油圧駆動制御 とエネルギ損失の低減並びに消費電力の節減を達成する ことができる射出成形機等の油圧駆動制御方法および装 置を提供する。 【解決手段】 吐出量の異なる複数の定吐出量油圧ポン プを選択ないし組合せて駆動することにより必要な圧油 の吐出量を得るように設定すると共に、電動モータの回 転数を50%〜100%の範囲内で制御することによ り、全ての定吐出量油圧ポンプの駆動時における最大吐 出量に対しほぼ0%から100%の範囲内で直線的な吐 出量の制御を行う。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    JP-2015120263-AJuly 02, 2015東芝機械株式会社, Toshiba Mach Co LtdMolding apparatus, and production method
    US-9475224-B2October 25, 2016Mitsubishi Heavy Industries Plastic Technology Co., Ltd.Injection molding machine and method for controlling injection molding machine