Apparatus for the automatic doffing of textile machines such as winding

Abstract

Apparatus for automatic bobbin changing on a high speed frontal bobbin winder with at least one winding-up station, at least one yarn support gripping spindle with a horizontal axis, a rotatable winding cylinder mounted for movement into and out of tangential engagement with a package forming on a yarn support on said spindle, a fixed yarn guide and a reciprocable yarn guide for distributing yarn along the yarn support, said apparatus comprising, mounted on a frame, A loading and unloading means including at least two parallel spindles, one of said spindles for removing a wound yarn package from the gripping spindle and another spindle for placing an empty yarn support on said gripping spindle, said parallel spindles being movable in turn into an aligned position in axial alignment with a gripping spindle of the machine; Nozzle means for capturing and removing the yarn fed to the yarn support, said nozzle means having a rectilinear capture slit communicating with a channel through which a stream of fluid may be fed at high speed and means for cutting the yarn associated with said nozzle means; Means for mounting the nozzle means so that it is movable between a capture position in which the slit extends in a plane including the reciprocating yarn between the fixed guide and the reciprocable guide, to capture a yarn as it moves from the fixed guide to the reciprocable guide and a second position adjacent said aligned position, to engage the captured yarn on an empty yarn support carried by said gripping spindle.