A method of maintaining a supply of yarn in a temporary yarn hopper at a rotor spinning machine work station and the apparatus for this

摘要

When maintaining the yarn supply in the temporary yarn hopper (10), the drum (101) of the temporary yarn hopper (10) is provided with a drive (102), or the drive take-up roller (51) coupled to the drum (101) is provided with an individual drive (52). The feed device (1) of the strand (2) is provided with an individual drive (13) for feeding the strand (2). The actively driven compensating arm (103) is provided with a drive (104) and the spinning rotor (32) is provided with an individual drive. During the winding of the yarn (4) on the spool (61), according to the information on the amount of wound yarn (4) on the drum (101), the control unit (8) controls the rotational speed of the drive (102) of the drum (101) or an individual drive (52) of the drive take-up roller (51) and the associated drum (101), thereby maintaining a temporary supply of wound yarn (4) on the drum (101) in the desired predetermined range. At the same time, the speed of rotation of the individual drive (13) of the feed roller (11) of the strand (2) of the feed device (1) is controlled to maintain yarn fineness (4), and in the case of individual rotor drive the rotor speed is adjusted to maintain yarn and twist. yarn. At the same time, the individual drive of the compensating arm is controlled to maintain the yarn tension (4) required for the correct construction of the spool (61) and in the case of individual rotor drive (32) the rotor drive speed (32) is adjusted to maintain not only the fineness of the yarn (4) yarn twist (4). The device for performing control operations at the workplace of a rotor spinning machine comprises a temporary yarn hopper (10) (4) by a drum (101).