Method for operating a spinning station of a rotor spinning machine and rotor spinning machine

A method for operating a spinning station of a rotor spinning machine that produces a yarn with a spinning rotor, the method comprising:

• monitoring the yarn being produced via a yarn monitoring unit;
• upon detection of a yarn defect by the yarn monitoring unit, stopping the spinning station and removing the yarn defect from the yarn;
• cleaning the spinning rotor with a spinning station-specific first cleaning device and then re-piecing the yarn at the spinning station;
• specifying a certain produced yarn length or a certain time interval of yarn production;
• specifying a maximum number of yarn defects within the produced yarn length or the time interval;
• detecting the number of yarn defects within the produced yarn length or the time interval;
• and
• upon exceeding a specified maximum number of yarn defects within the produced yarn length or the time interval, carrying out a mechanical intensive cleaning of the spinning rotor.

A method for operating a spinning station of a rotor spinning machine, comprising, wherein a yarn is produced at the spinning station with a spinning rotor, the method comprising:

• monitoring the yarn produced at the spinning station with a yarn monitoring unit;
• wherein, upon detection of a yarn defect in the yarn by the yarn monitoring unit, stopping the spinning station and removing the yarn defect from the yarn;
• cleaning the spinning rotor with a spinning station-specific cleaning device and then re-piecing the yarn at the spinning station;
• specifying a certain minimum produced yarn length or a certain minimum time interval between two yarn defects;
• recording the produced yarn length or time between detection of the yarn defects;
• and
• upon undershooting the minimum produced yarn length or minimum time interval between two yarn defects, carrying out a mechanical intensive cleaning of the spinning rotor.

A rotor spinning machine, comprising:

• a plurality of adjacently arranged spinning stations;
• each spinning station comprising:
• a spinning rotor for producing a yarn;
• a yarn monitoring unit for monitoring the produced yarn;
• a spinning station-specific cleaning device for cleaning the spinning rotor;
• and
• a control unit configured to control performance of the following:
• monitoring the yarn being produced via the yarn monitoring unit;
• upon detection of a yarn defect by the yarn monitoring unit,
• stopping the spinning station and removing the yarn defect from the yarn;
• cleaning the spinning rotor with the spinning station-specific cleaning device and then re-piecing the yarn at the spinning station;
• specifying a certain produced yarn length or a certain time interval of yarn production;
• specifying a maximum number of yarn defects within the produced yarn length or the time interval;
• detecting the number of yarn defects within the produced yarn length or the time interval with the yarn monitoring unit;
• and
• upon exceeding a specified maximum number of yarn defects within the produced yarn length or the time interval, carrying out a mechanical intensive cleaning of the spinning rotor with a further cleaning device.

A rotor spinning machine, comprising:

• a plurality of adjacently arranged spinning stations;
• each spinning station comprising:
• a spinning rotor for producing a yarn;
• a yarn monitoring unit for monitoring the produced yarn;
• a spinning station-specific cleaning device for cleaning the spinning rotor;
• and
• a control unit configured to control performance of the following:
• monitoring the yarn being produced via the yarn monitoring unit;
• upon detection of a yarn defect by the yarn monitoring unit, stopping the spinning station and removing the yarn defect from the yarn;
• cleaning the spinning rotor with the spinning station-specific cleaning device and then re-piecing the yarn at the spinning station;
• specifying a certain minimum produced yarn length or a certain minimum time interval between two yarn defects;
• recording the produced yarn length or time between detection of the yarn defects;
• and
• upon undershooting the minimum produced yarn length or minimum time interval between two yarn defects, carrying out a mechanical intensive cleaning of the spinning rotor with a further cleaning device.