Engraving device particularly for engraving materials in deformable condition

摘要

It is disclosed an engraving device active on a material in a plastic state in which the material moves forward on a first drum or roller (2) and cooperates with a second roller (6) which is also operatively active on the material to allow a starting rolling of same and a simultaneous engraving of a predetermined number of notches (9) transverse to the progress direction of the material (5). A third shaping roller (10) is then provided which is also active on the material moving forward downstream of the second roller (6). The material provided with the transverse notches (9) is directed to a gap included between the first roller (2) and third roller (10) to be submitted to further engraving of a predetermined number of longitudinal notches (11) orthogonal to the previously made notches (9). The device being the object of the invention allows an efficient rolling of the material in a plastic state and a simultaneous engraving action so as to obtain a material divided into squares that can be more easily reduced to discrete elements (20).