Nonlinear Modeling of a High Precision Servo Injection Molding Machine Including Novel Molding Approach

A nonlinear mathematical model of the injection molding process for electrohydraulic servo injection molding machine (IMM) is developed.It was found necessary to consider the characteristics of asymmetric cylinder for electrohydraulic servo IMM.The model is based on the dynamics of the machine including servo valve,asymmetric cylinder and screw,and the non-Newtonian flow behavior of polymer melt in injection molding is also considered.The performance of the model was evaluated based on novel approach of molding - injection and compress molding,and the results of simulation and experimental data demonstrate the effectiveness of the model.

高速伺服注塑机基础上新型背光源板的设计与成型

介绍了高速伺服注塑机基础上新型带点阵背光源板成型及所应用的新技术,所用伺服注塑机由日本JECT株式会社制造。从伺服注塑机的设计,成型用模具的结构,成型工艺,导光板结构及控制软件的实现五方面具体叙述了背光源板成型的特点,与传统背光源板相比,使用新方法成型时间明显缩短,减少了制造工序,节约材料,成品率大大提高,并且提高了背光源板的各种光学特性。