Micro injection molding: characterisation of cavity filling process

Based on reciprocating micro injection molding
machine, this paper characterizes the influence of machine
process parameters and its transition response from
velocity control to pressure control (V-P transition) on the
micro cavity filling process. The method of Design of
Experiment was employed to systematically and
statistically investigate the effect of machine parameters on
actual cavity filling process, which was described by the
defined process characteristic values (PCVs). The
statistical analysis of the experiments indicated that
injection speed was dominated factor affecting all PCVs in
cavity filling process. It was also found that the machine
V-P transition have significant effects on cavity filling.