Method for controlling an injection moulding press
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United States of America Patent
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-
Feb 1, 2000
Grant Date -
N/A
app pub date -
Mar 9, 1998
filing date -
Jul 9, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for controlling an injection moulding press, wherein the injection process is controlled by controlling the injection force, is disclosed. According to the method, the mass (m) of a moulded product is correlated with the viscosity (n) and either the pressure (P.sub.m) of the material in the mould or the injection pressure (P.sub.h), the resulting correlations are processed to define an analytical model expressing the mass (m) of the moulded product in relation to the operating parameters, an injection force control law is derived from the analytical model on the basis either of the pressure (P.sub.m) of the material in the mould or of the injection pressure (P.sub.h), and the press injection force is controlled on the basis of the analytical model.
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