Wire-rod and the like hot-rolling machine

Abstract

Wire-rod hot-rolling machine ( 1 ) which comprises a plurality of roller-provided rolling units ( 2 ) which are arranged one after the other along the wire-rod feeding paths (p); the roller-provided rolling unit ( 2 ) being formed by a plurality of rolling-mills assemblies ( 3 ) each of which is provided with a pair of opposite, counter-rotating rolling mill rollers ( 4 ), which are arranged parallel and adjacent each other; said rolling-mills assemblies ( 3 ) being arranged one beside the other, coplanar to a corresponding reference plane locally perpendicular to the feeding paths (p), each at the feeding path (p) of a respective wire rod (b), and are oriented so that the rotation axes (R) of the rolling mill rollers ( 4 ) of the various rolling-mills assemblies ( 3 ) are locally parallel to one another while intersecting the lying plane of the feeding paths (p) of the wire rods with an inclination angle ( 3 ) greater than 5° and smaller than 85°.

1 . Wire-rod and the like hot-rolling machine adapted to hot roll in parallel two or more which are fed one beside the other along respective feeding paths, and which comprises a plurality of roller-provided rolling units which are arranged one after the other along the wire-rods feeding paths, so that each roller-provided rolling unit can plastically deform all wire-rods while these are fed along the respective feeding paths; the wire-rod and the like hot-rolling machine being characterized
 in that said feeding paths are locally substantially rectilinear and parallel to one another;   in that at least a first roller-provided rolling unit comprises a plurality of rolling-mills assemblies, each of which is provided with a pair of opposite and counter-rotating rolling mills which are arranged parallel and adjacent each other, so as to define a rolling groove or throttling through which the wire-rod to be hot-rolled is forced; and   in that said rolling-mills assemblies are arranged one beside the other, substantially coplanar to a corresponding reference plane locally substantially perpendicular to the feeding paths of the wire-rods, so as to arrange the respective rolling groove or throttling on the lying plane of the feeding paths of the wire-rods, each at the feeding path of a respective wire-rod, and are oriented so that the rotation axes of the rolling mills of the various rolling-mills assemblies are locally substantially parallel to one another and simultaneously intersect the lying plane of the wire-rods feeding paths with an inclination angle greater than 5° and smaller than 85°.   
     
     
         2 . Wire-rod and the like hot-rolling machine according to  claim 1 , characterised in that the rolling-mills assemblies are arranged on the reference plane so that the rotation axes of the rolling mills of the rolling-mills assemblies intersect the lying plane of the feeding paths of the wire-rods with an inclination angle in the range between 30° and 60°. 
     
     
         3 . Wire-rod and the like hot-rolling machine according to  claim 2 , characterised in that the rolling-mills assemblies are arranged on the corresponding reference plane so that the rotation axes of the rolling mills of the rolling-mills assemblies intersect the lying plane of the wire-rods feeding paths with an inclination angle of about 45°. 
     
     
         4 . Wire-rod and the like hot-rolling machine according to  claim 1 , characterised in that the rotation axes of all the pairs of rolling mills are locally parallel to the reference plane, and are substantially coplanar to one another. 
     
     
         5 . Wire-rod and the like hot-rolling machine according to  claim 1 , characterised in that also a second roller-provided rolling unit comprises a plurality of rolling-mills assemblies, each of which is provided with a pair of opposite and counter-rotating rolling mills which are positioned parallel and adjacent each other, so as to define a rolling groove or throttling through which the wire-rod to be hot-rolled is forced; and in that the rolling-mills assemblies of said second roller-provided rolling unit are arranged one beside the other, substantially coplanar to a corresponding reference plane locally substantially perpendicular to the wire-rods feeding paths, so as to arrange the respective rolling grooves or throttlings on the lying plane of the wire-rods feeding paths, each at the feeding paths of a respective wire-rod, and are oriented on said reference plane specularly with respect to the rolling-mills assemblies of the first roller-provided rolling unit. 
     
     
         6 . Wire-rod and the like hot-rolling machine according to  claim 5 , characterised in that each rolling-mills assembly is provided with a longitudinal reference axis which is parallel to the reference plane; in that the two rolling mills of each rolling-mills assembly are arranged in a specular position on opposite sides of said longitudinal axis; and in that the two rolling-mills assemblies which belong to two adjacent roller-provided rolling units and which intersect one after the other a same wire-rod feeding path, are arranged on the respective reference planes with the longitudinal axes arranged in a specular position reciprocally offset one with respect to another, so as to reciprocally cross on the wire-rod feeding path. 
     
     
         7 . Wire-rod and the like hot-rolling machine according to  claim 1 , characterised in that the wire-rods feeding paths are arranged at a distance one from the other ranging between 0.3 and 3 metres. 
     
     
         8 . Wire-rod and the like hot-rolling machine according to  claim 1 , characterised by comprising a supporting crossbar which extends below the lying plane of the wire-rods feeding paths in a direction locally substantially parallel to the wire-rod feeding path; and in that the rolling-mills assemblies which form the various roller-provided rolling units, are fixed on the supporting crossbar in pairs one beside the other. 
     
     
         9 . Wire-rod and the like hot-rolling machine according to  claim 8 , characterised in that the rolling-mills assemblies which form the various roller-provided rolling units are formed by a series of elementary sectional modules structurally identical to one another. 
     
     
         10 . Wire-rod and the like hot-rolling machine according to  claim 9 , characterised in that the elementary sectional modular elements are fixed on the supporting crossbar aligned one after another, so as to form a plurality of rows of elementary sectional modules parallel to the wire-rods feeding paths.