Patent ID: 7690181
Filing Date: 2010-04-06
Classification: D01H

Abstract:
1. In the operation of a spinning machine with a plurality of spinning stations ( 1 ), each comprising a take-off device ( 27 ) with a take-off roller ( 10 ) and a pressure roller ( 14 ) for drawing off a yarn ( 9 ) from a spinning device ( 2 ) and a sensor mechanism ( 26 ) for checking piecings, a method of detecting the wear condition of the pressure roller characterised by the following steps: at the start of a piecing, the theoretical conveying length of the yarn ( the deviation of the theoretical conveying length from a desired yarn length, corresponding to the spacing between the spinning device ( the deviation is compared with a preadjustable limit value of the permissible deviation, and passing the limit value is evaluated as an indicator of intolerable wear of the pressure roller (