Textiles: fiber preparation – Working – Drafting
Patent
1998-06-30
2000-07-18
Neas, Michael A.
Textiles: fiber preparation
Working
Drafting
19240, 19260, D01H 532
Patent
active
060888822
ABSTRACT:
A regulated drawing unit for drawing fiber material includes an inlet through which the fiber material passes before being drafted; an outlet through which the fiber material passes after being drafted; a first arrangement defining a drawing field including drawing roll pairs spaced from one another in a direction of advance of fiber material; a drive system operatively connected to at least one of the drawing roll pairs for setting an extent of draft of the drawing field; a programmable control system having a memory and being connected to the drive system; a sensor for determining the mass of the fiber material running through a location and for applying signals to the memory; and a second arrangement for deriving information from data stored in the memory for adjusting the roll pair. The second arrangement includes a third arrangement for forming, from the information, a spectrogram of the fiber material and for evaluating properties of the spectrogram to use such properties in adjusting the roll pair.
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Kelemen Gabor J.
Neas Michael A.
Trutzschler GmbH & Co. KG
Welch Gary L.
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