Patent ID: 6327843
Filing Date: 2001-12-11
Classification: D07B,Y10S

Abstract:
An apparatus for the manufacture of reinforcing metallic cords to be used, in particular, for composite articles of manufacture of elastomer material, comprising:a bearing structure;an impeller in engagement with the bearing structure and drivable in rotation about a given axis;a nacelle oscillatably linked to the bearing structure by an oscillation axis coincident with the rotation axis of the impeller;feeding means operatively mounted on said nacelle to feed a plurality of wires from respective supply reels, said wires being guided onto the impeller along a laying path having end stretches coincident with the rotation axis of the impeller and a central stretch spaced apart from said impeller rotation axis;at least one preformer carried by the nacelle and acting on the wires over a portion thereof which is upstream of the first end stretch of the laying path,said apparatus further comprising at least one twister mounted on said nacelle and operating on at least one of said wires at a portion thereof upstream of the preformer to submit each strand to a torsional action about its own longitudinal axis, so as to neutralize internal torsional stresses induced in the wires by effect of the twisting action produced by said impeller.