Method for Preparing a Yarn End for Spinning in at a Rotor Spinning Device of a Rotor Spinning Machine along with a Rotor Spinning Machine

Abstract

With a method for preparing a yarn end (9) for spinning in at a rotor spinning device (2) of a rotor spinning machine (1) with a rotor housing (3) that can be closed with a cover (4) and can be subjected to negative pressure through a negative pressure channel (8), with a spinning rotor (5) that is rotatably mounted in the rotor housing (3) and rotates with an operating rotational speed during the spinning operation along with a draw-off nozzle (7), the yarn end (9) to be prepared is introduced into the negative pressure channel (8), and is interrupted by a severing structure (10) of the open edge of the rotating spinning rotor (5), and is thereby prepared for spinning in. During the interruption of the yarn end (9), the spinning rotor (5) is driven with a defined rotational speed for the preparation of the yarn end, whereas the rotational speed for the preparation of the yarn end is either equal to the operating rotational speed of the spinning rotor (5) or is less than the operating rotational speed of the spinning rotor (5). A corresponding rotor spinning machine (1) features a control unit (17), by means of which the rotor spinning device (2) can be operated in accordance with one of the preceding claims.

Description

Technical field [0001] The present invention relates to a method for preparing yarn ends for piecing at a rotor spinning device of a rotor spinning machine, wherein the rotor spinning machine has a cover that can be closed and can pass negative pressure The channel is loaded with a rotor housing under negative pressure, a spinning rotor (ie, a rotor) that is rotatably supported in the rotor housing and runs at an operating speed during spinning operation, and a drawing nozzle. In this method, the yarn end to be prepared is introduced into the negative pressure channel of the rotor spinning device, and is cut by the breaking structure of the open edge of the rotating spinning rotor and thus is prepared for splicing. The invention also relates to a corresponding rotor spinning machine having at least one such rotor spinning device. Background technique [0002] In order to start the spinning process at the rotor spinning machine during spinning, or to interrupt the spinning proces...

AI Technical Summary

Problems solved by technology

Here, however, differences in the quality of the yarn end processing can occur with respect to the length of the yarn end and fiber unraveling

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