Extruder head, extruder system and use of extruder head and/or extruder system

摘要

Extruder head (1) for extruding strands (ST) of construction material (BS) for 3D printing of building parts (BWT), extruder head (1) constructed from extruder head (1) in ejection direction (x) at least one of an extruder nozzle 5 comprising a discharge opening 2 for discharging a strand ST of ash BS, a strand cross section 4 of a discharged strand ST of construction material BS at least one defining element 7a, 7b, 8a, 8b, 30a, 30b which is variably settable for defining the portion 4A, 4I in a variably settable manner, and at least one defining element 7a; at least one setting device 213 , 217a , 217b , 218a , 218b configured for variably setting 7b , 8a , 8b , 30a , 30b , the at least one setting device comprising: ) extends maximally by this maximum opening height HO at a maximum opening height HO at the bottom of the emission opening 2 in a first extension direction (−z) different from the emission direction x and/or in the emission direction in at least one second extension direction different from (x) (-y, y) in such a way that it extends maximally by this maximum opening width BO at the maximum opening width BO at the side of the outlet opening 2 , and placed.