Print head for additive manufacturing using continuous fibers and thermoplastic matrix materials for cutting in a hot zone of the print head by radial or rotational movement of a cutting device

Abstract

A print head for additively manufacturing fiber-reinforced composite materials includes a feed channel, a heating block, a nozzle and a cutting unit. A filament of the fiber-reinforced material enters an inlet of the nozzle through the feed channel, leaves the nozzle via an outlet of the nozzle, and is deposited on a print bed. The cutting unit is located inside the heating block which has a beneficial effect on the cut and/or the shearing of the material to be printed. The invention also relates to a method in which the filament is cut and/or sheared, wherein the cutting unit performs a linear movement or rotation, or the print head per se performs a linear movement or rotation, as a result of which the filament is cut and/or sheared off.