Procedure and apparatus for drafting at least one fiber band
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Sep 15, 2005
app pub date -
Feb 11, 2005
filing date -
Feb 12, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Proposed is a procedure and an apparatus for the drafting of at least one fiber band by means of a controlled preparatory drafting operation for a spinning machine, in particular a carding or a drafting frame, which possesses successively arranged roll-pairs (5, 6, 7) for corrective drafting, whereby the cross-section or the bulk, or the thickness of the at least one fiber band, or drafting from standard measurements is measured upstream of a roll-pair (5, 6, 7) and, based upon the corresponding measurement signals, the speed of rotation of at least one roll (5a) of a first roll-pair (5) is controlled by a first control circuit (30) and the rotational speed of at least one roll (6a) of a second roll-pair (6) is controlled by a second control circuit (35; 40). The procedure characterizes itself in that at least some of the measurement signals are so apportioned in partial amplitudes, that it is possible to form the total amplitude of the respective signal, and that band variations in a partial amplitude in the first control system (30) and variations in another partial amplitude in the second control system (35; 40) can be compensated. Likewise a corresponding apparatus is proposed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully