Rieter Machine Works, Ltd.

Hans-Ulrich Eichenberger

Heinz Clement

Giancarlo Mondini

Walter Ackeret

Gian-Carlo Mondini

Flavio Cavadini

Paul Jager

A guide plate is positioned immediately downstream of the detaching rollers of the combing head in order to deflect the web upwardly towards a deflection plate which, in turn, deflects the web back towards a trailing section of the guide plate. The guide plate and deflection plate are electrically conductive and electrically connected to the machine frame of the combing machine in order to discharge the electrostatic charges in the web. A trailing edge of the guide plate may also be inclined to deliver the web to the delivery rollers. The distance between the nip clearance of the detaching rollers and the point at which the web contacts the inclined section of the guide plate is too short to permit jamming of a web due to the rigidity of the web.

Combing machine having a web guide device

The combing machine as provided with a nipper jaw unit in which a nipper lip is provided on the top nipper plate to project in overlapping relation to the lower nipper plate for clamping a wadding therebetween. In a fully closed position of the nipper plates, with the nipper plates in contact, the nipper lip projects into the plane of the needles of the combing segment of the combed cylinder. However, the combed segment is provided with raised bearing segments to lift the nipper lip away from the needles over a safety clearance. In other embodiments, stops can be provided on the lower nipper to limit the movement of the top nipper towards the closed position.

Combing machine with means for limiting movement of top nipper

Two lap slivers lying one on top of the other are continuously fed to the combing tools in a plurality of combing heads of a combing machine. The first lap sliver comes from a first lap roll carried by a rear carrier device, and runs over a front carrier device. A second lap roll is carried on this, from which the second lap sliver emanates. A detector determines when the end of the lap sliver from the first lap roll is running out in one of the combing heads. A control unit then executes a lap roll change on several combing heads simultaneously as follows: The end of the first lap sliver is severed to the same length in all the combing heads. The cut-off pieces of the lap slivers and the winding tubes of the first lap rolls are removed. The second lap rolls are rolled on to the rear carrier devices. New lap rolls are so placed on the front carrier devices that the start of the lap sliver on these new rolls is aligned with the end of the first lap sliver. In this way, the lap roll change can be executed completely automatically and without stopping the machine.

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Winterthur, Switzerland

Hans-Ulrich Eichenberger