Measuring and testing – Fluid pressure gauge – Combined
Reexamination Certificate
2008-01-01
2008-01-01
Allen, Andre J. (Department: 2855)
Measuring and testing
Fluid pressure gauge
Combined
Reexamination Certificate
active
11359601
ABSTRACT:
An injection screw position Xa, injection speed Va, and injection pressure Pa are read. A deceleration distance D the injection screw moves from the point where the injection operation has been stopped at the current moment to be decelerated by maximum deceleration till the point where the injection speed is reduced to zero is determined from a corrected deceleration in which the amount of correction α is added to a predetermined deceleration A inherent in the machine and the read injection speed Va. The determined deceleration distance D is multiplied by the amount of change in injection pressure with respect to the amount of change in the injection screw position to determine a predicted increment in pressure (D·ΔP/ΔX). The predicted increment in pressure is added to the current injection pressure Pa to determine an injection pressure Pa* predicted when the screw is suddenly decelerated at the current moment. If the predicted injection pressure Pa* exceeds the predetermined limit pressure Pmax, the injection operation is stopped to decelerate the screw.
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European Search Report, mailed Jan. 26, 2007, and issued in corresponding European Patent Application No. 06250769.4-1253.
Kobayashi Minoru
Komiya Shingo
Uchiyama Tatsuhiro
Allen Andre J.
Fanuc Ltd
Staas & Halsey , LLP
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