Apparatus for condensing a drafted fiber strand
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United States of America Patent
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-
May 1, 2001
Grant Date -
N/A
app pub date -
Jan 21, 2000
filing date -
Jan 27, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A condensing zone is arranged downstream of the front roller pair of a drafting arrangement of a spinning machine, in which condensing zone a drafted fiber strand is condensed. The condensing zone comprises a sliding surface having a suction slit, which sliding surface serves as a guide for a circulating air-permeable transport belt. The transport belt transports the fiber strand over the suction slit to a nipping roller, which presses the fiber strand and the transport belt against the sliding surface. The perforation of the transport belt presents a risk, namely that fiber fly or other impurities can be deposited between the sliding surface and the supporting surface of the transport belt arranged thereto. For this reason it is provided that the sliding surface has at least one sharp edge, which extends transversely to the transport direction and which scrapes the supporting surface. The sharp edge lies preferably in the area of the supporting surface which covers the suction slit.
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