Sliver guide assembly including a sliver guiding device and a sl

Details Sliver guide assembly including a sliver guiding device and a sl Sliver guide assembly including a sliver guiding device and a sl

1995-10-27

1997-05-20

Neas, Michael A.

Textiles: fiber preparation

Working

Drafting

19288, 19239, D01H 572

Patent

active

056302517

ABSTRACT:
An apparatus for measuring sliver thickness in a drawing frame includes a sliver guiding device having converging inner wall faces for bringing a plurality of simultaneously introduced slivers together to form a sliver assembly constituted by side-by-side positioned running slivers arranged in a plane. The apparatus further includes a sensor element laterally contacting the sliver assembly; and a counterelement laterally contacting the sliver assembly. The counterelement is so supported that it may pivot parallel to the plane of the sliver assembly for purposes of adjustment and immobilization. The sensor element is urged into a resilient contact with the sliver assembly whereby the sensor element undergoes excursions upon variation of thickness of the sliver assembly. The sensor element and the counterelement together define a constriction through which the sliver assembly passes. A transducer converts excursions of the sensor element into electric pulses. A preformer adjoins the sliver guiding device upstream thereof for causing the slivers to laterally approach one another before they enter the sliver guiding device. The preformer has converging lateral wall components and an open top and/or bottom side. A withdrawing roller pair supported downstream of the sliver guiding device pulls the sliver assembly through the preformer and the sliver guiding device.

REFERENCES:
patent: 2683290 (1954-07-01), Noguera
patent: 4259766 (1981-04-01), Copoulos
patent: 4630336 (1986-12-01), Schopwinkel et al.
patent: 5379488 (1995-01-01), Stahlecker

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