US Patent 7806356 Laying head with multi-groove rotating member

A laying head, for forming coils starting from continuous rolled products such as round bars or wire rods (10) comprising a rotating member (3) with an axis (X), rotationally fixed to the supporting structure (30) by means of bearings (4, 5). The end of the rotating member (3) is a bell-shaped element (6) on the surface of which are a series of grooves (18) that guide the rolled product (10), said grooves having the form of a spiral and being open towards the outside. The laying head (1) comprises a fixed containing and protecting bell element (15) enclosing a portion of the rotating bell element (6) and having a shape that is complementary thereto.