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Dynamic modeling of the mold filling process in an injection molding machine
Author(s) -
Chiu ChengPing,
Shih LamingChang,
Wei JongHwei
Publication year - 1991
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760311908
Subject(s) - mold , injection molding machine , transfer molding , materials science , molding (decorative) , nonlinear system , transient (computer programming) , mechanics , flow (mathematics) , process (computing) , mechanical engineering , blow molding , composite material , computer science , engineering , physics , quantum mechanics , operating system
This paper presents the development of a nonlinear mathematical model for the study of the mold filling process in an injection molding machine. The model is formulated by the Reynolds transport theorem which is applied to describe the polymer flow dynamics. The mold filling process can be approximated by the transient phenomenon of the non‐Newtonian fluids flowing through a closed conduit. The comparison between the experimental results and the theoretical simulation indicate that the nonlinear model is a reasonable representation of the mold filling dynamics when the acrylonitrile‐butadiene‐styrene (ABS) is injected into a disk shape mold. The actuation system dynamics of an injection molding machine are also investigated. The results indicate that the nonlinear model can also adequately predict the transient behavior of the actuation system.