ADDITIVE MANUFACTURING MACHINE COMPRISING A DEVICE FOR DISPENSING POWDER BY SCREW DOSER ON A MOBILE SURFACE

摘要

An additive manufacturing machine (10), the additive manufacturing machine comprising a manufacturing enclosure (12), the machine comprising at least one moving powder receiving surface (28) and a manufacturing area (20) located in the manufacturing enclosure, a powder spreading device (30), and at least one powder dispensing device (32) on the movable receiving surface. The dispensing device comprises a buffer tank (40) connected to a powder supply (42) and a powder delivery point (P1) below which a movable receiving surface (28) moves, and the dispensing device comprises a screw feeder (44) connecting the buffer tank (40) and the powder delivery point (P1) and for generating a continuous stream of powder from the buffer tank to the powder distribution point.