METHOD FOR OPERATING AN OPEN-ENDED ROTOR SPINNING DEVICE AND OPEN ENDED ROTOR SPINNING MACHINE WITH A MULTITUDE OF OPEN-ENDED ROTOR SPINNING DEVICES SIDE BY SIDE

摘要

The present invention relates to a method for operating an open-end rotor spinning device (1). For spinning, a rotor housing (2) is closed with a cover element (8) and subjected to negative pressure by means of a vacuum supply (10), a spinning rotor (3) rotates in the rotor housing (2) and a projection (12) attached to the cover element (8) ) with a thread withdrawal channel (15) protrudes into the spinning rotor. When braking the spinning rotor (2), the rotational speed of the spinning rotor (2) is reduced, the negative pressure in the rotor housing (2) above a first speed (n 1), in which the centrifugal forces a fiber ring (5) still safe in the rotor groove ( 4) of the spinning rotor (3) hold, and the fiber ring (5) by displacement of the cover element (8) between an open position and a closed position below a second speed (n 2), wherein the fiber ring (5) due to the decreasing centrifugal forces already collapsed, sucked due to the in the rotor housing (2) restored negative pressure. The present invention also relates to an open-end rotor spinning machine for carrying out the method.