Arrangement for condensing a drafted fiber strand
AssigneesFritz Stahlecker, Hans Stahlecker
InventorHans Stahlecker
Life of this patent
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Abstract
A condensing zone for condensing a drafted twist-free fiber strand is arranged downstream of a drafting arrangement of a ring spinning machine. The condensing zone includes a stationary sliding surface having a suction slit extending essentially in a fiber strand transport direction. A perforated transport belt transports the fiber strand over the suction slit of the sliding surface. The transport belt wraps around a bottom roller of a front roller pair of the drafting arrangement and is driven by the bottom roller. The transport belt drives in turn a nipping roller, which limits the condensing zone on its exit side with a nipping point serving as a twist block. The nipping roller presses the fiber strand and the transport belt against the sliding surface of the condensing zone.
Claims15
An arrangement for condensing a drafted fiber strand in a condensing zone arranged downstream of a front roller pair of a drafting unit, which condensing zone comprises:
- a stationary sliding surface having a suction slit extending essentially in a fiber strand transport direction,
- a perforated transport belt which transports the fiber strand over the sliding surface, and
- a nipping roller which in use presses the fiber strand against the belt, thereby limiting the condensing zone on an exit side thereof,
- wherein the transport belt is driven in use by a roller of the front roller pair and is pressed onto the sliding surface by the nipping roller.
A ring spinning arrangement including a fiber strand drafting unit, with a front drafting roller pair at a downstream end of the drafting unit, and a condensing unit disposed downstream of the drafting unit, said condensing unit comprising:
- a stationary sliding surface having a suction slit extending essentially in a fiber strand transport direction,
- a perforated transport belt which transports the fiber strand over the sliding surface, and
- a nipping roller which in use presses the fiber strand against the belt, thereby limiting the condensing zone on its exit side,
- wherein the transport belt is driven in use by a roller of the front roller pair and is pressed onto the sliding surface by the nipping roller.
Dependencies are inferred from the claim text.