Cutter for printed substrates

Abstract

The invention relates to a cutter (10) for cutting printed substrates, said cutter (10) comprising a supporting plane(20) adapted to receive a printed substrate (30) comprising a plurality of images (31) separated by a plurality of edges (32, 33) perpendicular to each other in a feeding direction (F), and a plurality of cutting units (50) suitable for cutting said printed substrate (30) along said edges (32, 33) in a longitudinal direction (L), parallel to said feed direction (F), and in a transverse (T), perpendicular to said feeding direction (F). Each cutting unit (50) comprises a pair of parallel blades (51), spaced apart at a distance corresponding to the width of the edges (32, 33), a backing plane (53) arranged underneath the supporting plane (20) of the cutter (10) and suitable to provide a backing surface to said blades (51) during cutting, and a connecting arm (54) which extends from a frame (55) of the cutting unit (50) on which the blades (51) are mounted to said backing plane (53) in a direction opposite to the cutting direction. The connecting arm (54) is parallel to the blades (51) and is arranged between the blades (51) on a plane (P) parallel to the planes (A, B) on which the blades (51) lie, and the portion of the backing plane (53) comprised between the area arranged underneath the blades (51) and the area wherein the connecting arm (54) is fixed comprises a through opening (56). Thanks to this configuration, the edges (32, 33) between the images printed on the substrate (30) may be cut in a single step by the cutting units and substrate scraps may be separated directly during cutting operations without the need for manual intervention of an operator.

Description

technical field [0001] The present invention relates generally to the cutting of substrates printed by printing presses, such as advertising boards printed by digital printing presses, and in particular to a method for cutting rigid printed substrates such as cardboard, PVC foam board or multilayer flat products. ) cutting machine. Background technique [0002] Known cutting machines for printed substrates generally comprise a support plane adapted to receive the printed substrate, and a plurality of cutting units comprising a substantially circular shape, rotatably mounted about an axis parallel to the support plane. blade. The cutting unit is usually mounted on a cutting machine to cut in directions orthogonal to each other (in particular, in a longitudinal direction parallel to a feeding direction of the substrate and in a transverse direction perpendicular to the feeding direction of the substrate). [0003] Cutters generally also comprise a cylinder adapted to draw th...

AI Technical Summary

Problems solved by technology

[0007] Another problem associated with performing cutting on printed substrates is that, after the cutting operation, the edges that are separated from the picture constitute waste material that moves with the picture and must be manually removed from the cutting machine at the exit by the operator , which is also a time-consuming operation

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