Modeling and Control of an Electro-hydraulic Injection Molding Machine With Smoothed Fill-to-Pack Transition*

[+] Author and Article Information
Danian Zheng, Andrew Alleyne

Dept. of Mechanical and Industrial Engineering, University of Illinois, Urbana-Champaign, Urbana, IL 61801

J. Manuf. Sci. Eng 125(1), 154-163 (Mar 04, 2003) (10 pages) doi:10.1115/1.1540126 History: Received July 01, 2000; Revised October 01, 2001; Online March 04, 2003
Copyright © 2003 by ASME
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Injection cycle phases (Thayer and Davis 7)
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Mechanical schematic of IMM machine
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Polymer flow viscosity characteristics
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Ram-screw—nozzle system during packing phase
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Ram position and pressure—position control only
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Pressure and ram position—pressure control only
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Pressure and ram position—whole injection cycle
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Line pressure transient
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Latent tracking bumpless transfer scheme 9
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“Closed loop” filling and packing phase ILC
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IMM Implementation of bumpless transfer algorithm
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Simulated convergence—position and pressure error
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Injection molding part from experiment
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Packing without (a) and with (b) bumpless transfer
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Experimental convergence—position and pressure error




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