特殊抽芯结构模具试模过程中对普通注塑机的液压系统和控制电路的改造

Modification of Hydraulic System and Control Circuits in Ordinary Injection Molding Machines for the Trial of a Mould with Special Core-pulling Mechanism

分析了一套具有复杂抽芯动作的模具的运动特点,此模具在普通注塑机上无法实现动作要求,阐述了对普通注塑机的油路和控制电路的改造过程。当运动部件要求在开、合模的一个行程中既进且退动作时,可以充分利用注塑机中子、公模吹气、母模吹气等的电控系统和液压元件以及外接液压站实现动作要求。

The movement characteristic of a mould with complicated core-pulling mechanism was analyzed. The required movement of this mold can not be realized on a regular injection molding machine. The hydraulic and control systems of a regular injection molding machine was modified to meet the requirement. The existing controlling components including core-pulling, core blowing, and cavity blowing, as well as internal and external hydraulic systems were fully employed, the in-core and out-core of core-pulling mechanism could be completed in one process of mould opening or closing.