Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2007-06-26
2007-06-26
Johnson, Christina (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C264S328100
Reexamination Certificate
active
10702519
ABSTRACT:
When a metering process is started, a screw rotates at a preset rotating speed, thereby carrying out back pressure control to keep the pressure of a resin at a preset pressure, and retreats. When the screw is located near a preset metering completion position, the control mode is switched to positioning control for the preset metering completion position, and a screw rotation stop command is outputted. The screw overruns for some distance before its rotation stops after it retreats and stops at the preset metering completion position. A resin quantity for the overrun is corrected to obtain a preset metered resin quantity by reversely rotating the screw by a rotational amount corresponding to the overrun.
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Asaoka Hiroyasu
Ishikuro Toshio
Shiraishi Wataru
Takatsugi Satoshi
Fanuc Ltd.
Huson Monica A
Johnson Christina
Staas & Halsey , LLP
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