公开(公告)号：US20030035854A1

公开(公告)日：2003-02-20

申请号：US09929219

申请日：2001-08-14

Applicant: Alcoa Inc.

Inventor： Douglas S. Pfahl

IPC: B29C045/77

CPC classification number: B29C45/82 ,  B29C45/77

Abstract: An injection molding apparatus includes a control system for controlling the injection of fluid molding material during an injection cycle. The control system includes a controller for generating control signals and a servo control circuit responsive to the control signals for controlling the injection of the fluid molding material. The servo control circuit implements a first control mode which controls only a velocity of the fluid molding material during a first part of the injection cycle and a second control mode which controls only a pressure of the fluid molding material during a second part of the injection cycle.

Abstract translation: 注射成型装置包括用于在注射循环期间控制流体模塑材料的注入的控制系统。 控制系统包括用于产生控制信号的控制器和响应于用于控制流体模制材料的注入的控制信号的伺服控制电路。 伺服控制电路实现了在喷​​射循环的第一部分期间仅控制流体模塑材料的速度的第一控制模式和仅在喷射循环的第二部分期间仅控制流体模制材料的压力的第二控制模式 。