Equipment for unraveling threads from a fabric

Details Equipment for unraveling threads from a fabric Equipment for unraveling threads from a fabric

D - Textiles, Paper

21

F

28/1

D21F 1/00 (2006.01)

Patent

CA 1285131

ABSTRACT The invention concerns equipment for unraveling threads out of a fabric, in particular cross-threads in the end areas of fabrics of papermaking machines. The equipment includes an unraveling apparatus with a sensor head to determine the precise course of the threads to be removed. An unraveling head is dis- placeable transversely of the threads and at least one unraveling needle is adapted to enter the fabric and lift thread ends there- from. A cutter is adapted to cut off the thread end thus lifted out of the fabric. A tracking control governs the motion of the unraveling head in the transverse direction to correspond to the path of the threads to be removed as ascertained by the sensor head. Stepwise relative displacement is produced between the fabric and the unraveling apparatus in the longitudinal direction of the threads to be removed.

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