Method of respinning-in on open-end spinning machines and a device for carrying out the method

An attending device for producing a yarn reserve on an open-end spinning machine, the spinning machine having a spinning unit for winding yarn onto a tube supported by a bobbin holder, the bobbin holder having arms fixed to the spinning machine, the arms spaced at a distance apart for receiving and holding the tube, the attending device comprising:

• a body;
• a control means for controlling functions of the attending device;
• a source of ancillary yarn located on the body of the attending device;
• a transport arm rotatably mounted to the body, the transport arm being rotatable between a tube receiving location and the bobbin holder for receiving an empty tube at the tube receiving location and transporting the tube to the spinning machine;
• a gripping means fixed to the transport arm for gripping and transporting the empty tube;
• a swinging arm rotatably mounted to the transport arm, the swinging arm having a suction means thereon for taking in a section of ancillary yarn at an intake location from the source of ancillary yarn and leaving a remaining section of ancillary yarn, the swinging arm rotating to a location near one end of the tube after the suction means takes in the section of ancillary yarn at the intake location such that the section of ancillary yarn is positioned adjacent the end of the tube, the transport arm rotating to the bobbin holder for delivering the tube once the section of the ancillary yarn is positioned adjacent the end of the tube, the tube positioned and fixed between the arms of the bobbin holder such that the section of the ancillary yarn is gripped between one of the arms of the bobbin holder and the empty tube;
• a spinning-in lever rotatably mounted to the body, the spinning-in lever being rotatable between an ancillary yarn engaging position and the spinning unit of the spinning machine;
• and
• a spinning-in head fixed to the spinning-in lever for engaging the remaining section of ancillary yarn, the spinning-in head having an adaption means for cutting the remaining section of ancillary yarn from the source of the ancillary yarn and providing the remaining section of the ancillary to the spinning unit for spinning-in and producing the yarn reserve.