WIRE GUIDE BLOCK FOR PRODUCING SHEATHED REINFORCEMENT ELEMENTS FOR TYRES

The invention relates to a wire guide block comprising an opening for guiding a plurality n of metal wire elements, each metal wire element k having a radius r 1,k. The guiding hole comprises: - a plurality of n centring portions, each centring portion being configured to centre a metal wire element k along a centring axis A c which is orthogonal to a plane P i for discharging the metal wire element, each centring portion being inscribed, in the plane P i , in a circle C i which is centred on a point of the centring axis A c and which has a radius r 2,k greater than or equal to 1.03 r 1,k and less than or equal to 1.20 r 1,k , each centring portion being delimited by at least three centring surfaces which are tangential to the circle C i , - at least one main discharge portion which is configured to discharge a material resulting from the abrasion of the metal wire elements when they pass between the centring surfaces of the centring portions. The main discharge portion forms a passage which connects at least two centring portions to each other.