Textile machine service unit having a roving end extending appar

Details Textile machine service unit having a roving end extending appar Textile machine service unit having a roving end extending appar

1990-04-11

1992-05-19

Stodola, Daniel P.

Textiles: spinning, twisting, and twining

Apparatus and processes

Doffing or donning

57261, 57266, 57268, 57271, 57273, 57278, 57281, D01H 910, D01H 914

Patent

active

051136457

ABSTRACT:
A bobbin exchange apparatus for exchanging full bobbins for empty bobbins on a spinning machine. A bobbin exchange apparatus is mounted in a traveling service unit and includes a component for temporarily supporting a bobbin, a component for transferring a bobbin between and among the creel and the spare bobbin frame of the textile machine and the traveling service unit, and a component for displacing the end of the roving of a full bobbin temporarily supported on the temporary supporting device to an extending disposition ready for engagement for feeding to the drafting device of the textile machine. A suction applying device for applying the suction to engage the roving end is pivotally mounted to the temporary supporting component for pivoting about an axis parallel and offset from the axis of the temporarily supported full roving bobbin. An intermediate engaging member mounted to the temporary supporting component for pivoting about the axis of the full roving bobbin includes a hook end portion for engaging the roving end. The suction applying device and the intermediate engaging member are synchronously pivoted in opposite pivoting directions to effect alignment of the roving end of the full roving bobbin for gripping by a roving feeder gripper. The roving feeder gripper subsequently pieces the gripped roving end with the roving of a nearly exhausted roving bobbin.

REFERENCES:
patent: 4080776 (1978-03-01), Hemala et al.
patent: 4233810 (1980-11-01), Kamp
patent: 4899531 (1990-02-01), Mack
patent: 4944146 (1990-07-01), Scaglia
patent: 4979360 (1990-12-01), Kallmann et al.

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