Multiwire sawing machine for the cutting of material in block form

A sawing machine with a plurality of wire tools for cutting material in blocks, such as stone material, comprising a guide pulley composed of a plurality of wheels of the same diameter, coaxial and juxtaposed side by side in a pack on a corresponding shaft or the like, characterized

• in that in said wheel pack of the guide pulley (P2) a wheel (P21) presenting at least an external circumferential groove (P21′) and a wheel (P22) presenting a plurality of external circumferential grooves (P22′) are alternated in a repetitive sequence,
• in that all said wheels (P21, P22) comprise a radially internal part (P21.1, P22.1), at which they are mutually juxtaposed in a pack,
• in that each wheel (P21) presenting at least a groove (P21′) comprises a radially external part (P21.2) having an external annular rim (P21.3) of lesser width than the thickness of said internal part (P21.1) thereof, while each wheel (P22) presenting a plurality of grooves (P22′) comprises a radially external part (P22.2) having an external annular rim (P22.3) of a width greater than the thickness of said internal part (P22.1) thereof, and which overlaps, laterally, partially and in a freely revolving manner, the radially internal part (P21.1) of each wheel (P21) adjacent and presenting at least a groove (P21′), and
• in that the lateral edges or sides (P21.4, P22.4) of all said wheels (P21, P22) present at least the same thickness as the thickness of each internal annular ridge (P22.5) between adjacent grooves (P22′) in a wheel (P22) with a plurality of grooves, so as to ensure lasting and correct guiding against divergence and/or lateral slipping of the cutting wires (F) which run in the grooves (P21′, P22′) contiguous to the lateral walls of the wheels (P21, P22).