OPTIMUM DESIGN OF RUNNER SYSTEM BALANCING IN INJECTION-MOLDING

Authors
Citation
Cs. Li et Yk. Shen, OPTIMUM DESIGN OF RUNNER SYSTEM BALANCING IN INJECTION-MOLDING, International communications in heat and mass transfer, 22(2), 1995, pp. 179-188
Citations number
9
Categorie Soggetti
Mechanics,Thermodynamics
ISSN journal
07351933
Volume
22
Issue
2
Year of publication
1995
Pages
179 - 188
Database
ISI
SICI code
0735-1933(1995)22:2<179:ODORSB>2.0.ZU;2-D
Abstract
The runner-system design is of great importance to achieve a successfu l injection molding process of a family mold with multiple cavities. U sing a Galerkin finite element method to simulate the flow of a one-di mensional tube runner-system including phase change in detail we prese nt a power law model. The difference between the pressure and temperat ure at the gate entrance of all cavities can be taken as the objective function to be minimized because if all cavities are filled simultane ously, these pressure and temperature variations should be a minimum. The purpose is to fill all cavities at the same instant under the same conditions in order to prevent flashing of the mold and to produce pa rts of improved and uniform quality. In this paper we present a feasib le means to optimize the runner design automatically by integrating op timization theory with a flow/thermo-simulation program.