公开(公告)号：US3820730A

公开(公告)日：1974-06-28

申请号：US26163872

申请日：1972-06-12

申请人： ENDO T ,  AOBA T ,  HAGIHARA S ,  MORISHITA S ,  EGAMI K

发明人： ENDO T ,  EGAMI K ,  HAGIHARA S ,  AOBA T ,  MORISHITA S

IPC分类号： B65H54/71 ,  B65H67/04 ,  B65H67/06 ,  B65H75/28 ,  B65H75/30 ,  B65H54/20 ,  B65H54/26

CPC分类号： B65H54/71 ,  B65H67/0405 ,  B65H67/067 ,  B65H75/28 ,  B65H75/30 ,  B65H2701/31

摘要： A textile machine having a plurality of winding units arranged in a row is serviced by automatic doffing apparatus travelling on a track along the row of winding units. Each winding unit has means for sensing when a bobbin being wound in it is full. When the doffing apparatus comes to a winding unit with a full bobbin, it stops, the yarn is severed upstream of the bobbin and is sucked into a storage box and the full bobbin is released from the bobbin chuck and discharged. A new bare bobbin is thereupon delivered by the doffing apparatus to the chuck, the yarn is transferred to the new bobbin which thereupon starts to rotate and is severed by the severing means downstream of the bobbin. The doffing apparatus then proceeds to the next winding unit with a full bobbin. When stopping at a winding unit, the doffing apparatus first slows down so that shock is avoided and accurate positioning is achieved. The sequential steps of operation of the doffing apparatus are controlled by a group of coaxial programming cams actuating corresponding microswitches.