Vorrichtung zur Beeinflussung des Volumenstroms von extrudiertem plastisch verformbaren Werkstoff:

Abstract

In the device for influencing the volumetric flow of extruded plastically deformable material, the latter is conveyed to an outlet nozzle during the additive manufacturing of components. There is a flange (1) which is arranged between an extrusion unit and an outlet nozzle (3) and is connected to the extrusion unit and the outlet nozzle (3). A duct (10) designed to start from the extrusion unit and end at the outlet nozzle (3) is incorporated in the flange (1). In the flange (1), a piston (2) is mounted so as to be rotatable perpendicular to the longitudinal axis of the duct (10) and is guided through the duct (10). In the piston (2) there is formed a hole (8) which opens into a bypass duct (9) which is routed to a bypass nozzle (5). On the outer lateral surface of the piston (2) there is formed at least one groove (2.1) in the region of the duct (10) in such a way that, depending on the angular positions of the piston (1), material (6) can be conveyed through the groove (2.1) in the direction of the outlet nozzle (3) and/or through the hole (8) out of the bypass nozzle (5)