Agitating – With heating or cooling – Including temperature control
Patent
1991-01-15
1992-09-22
Thurlow, Jeffery
Agitating
With heating or cooling
Including temperature control
264 406, 264 407, 264349, 425143, 425145, 425162, 425170, 4253791, 366149, 364502, B29C 772, B29C 4782
Patent
active
051491931
ABSTRACT:
An extruder temperature controller for an extruder barrel and a method for controlling the temperature of an extruder barrel, includes a device for determining an actual screw speed and for storing a plurality of screw speeds. Each member of the plurality of stored screw speeds has a corresponding stored temperature reset value. The extruder temperature controller has a device for comparing and selecting that compares the actual screw speed to each of the plurality of stored screw speeds and selects a default screw speed. The default screw speed has a smaller deviation from the actual screw speed than any other member of the compared, stored screw speeds. The controller further includes a device for generating a control output driver signal to a heat exchanger. The control output driver signal is the corresponding stored temperature reset value for the default screw speed. The adaptive reset value for a specific speed is derived for each extruder barrel zone for each profile table section of setpoints and parameters for a particular extrusion material and particular process.
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Crompton & Knowles Corporation
Crowe Bernard Francis
Thurlow Jeffery
Vargot Mathieu
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