Clamping apparatus



PROBLEM TO BE SOLVED: To provide a clamping apparatus where, in molding by a die casting machine and an injection molding machine, even when a die and the clamping apparatus are unequally thermally deformed, burrs are not generated in a casting and a molding, further, the damage of the die is suppressed, and clamping force can be instantaneously adjusted. SOLUTION: The clamping apparatus is provided with: a plurality of clamping cylinders, after a movable die fitted to a movable plate and a fixed die fitted to a fixed plate are closed, pressing the die in cooperation with a die bar: a hydraulic circuit feeding pressure oil to the clamping cylinders and further having a plurality of pressure regulation valves for regulating the pressure oil to prescribed pressures; and a controller for controlling the hydraulic circuit so as to have clamping force in accordance with the injection stage of an injection device. In the injection stage, the pressure oil whose pressure is regulated to at least two different pressures is selectively fed to each clamping cylinder so as to generate clamping force. COPYRIGHT: (C)2008,JPO&INPIT
【課題】ダイカストマシンや射出成形機の成形において、金型や型締装置が不均等に熱変形しても鋳造品や成形品にバリが発生することがなく、また、金型の損傷を抑え、型締力を即時的に調整することができる型締装置を提供する。 【解決手段】可動盤に取付けられた可動型と固定盤に取付けられた固定型が型閉した後に、タイバーと協働して金型を押圧する複数の型締シリンダと、前記型締シリンダに圧油を供給するとともに、前記圧油を所定の圧力に調整する複数の圧力調整弁を有した油圧回路と、前記油圧回路を制御して、射出装置の射出工程に応じて所定の型締力とする制御装置と、を備えた型締装置であって、前記射出工程において、少なくとも二つの異なった圧力に調整した圧油を前記型締シリンダに選択的に供給して型締力を発生することを特徴とする型締装置。 【選択図】図2




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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    JP-2011104615-AJune 02, 2011Toshiba Mach Co Ltd, 東芝機械株式会社型締装置