The invention relates to a bottom-up powder conveying mechanism for a laser powder-bed fusion (L-PBF) system (1), comprising a reservoir (5b, 5c) with a floor that can be moved like a piston, said reservoir being operated as a powder reservoir, to convey powder in the direction of a top opening of the reservoir (5b, 5c) opposite the floor and/or through the top opening of the reservoir (5b, 5c) and thus towards a working plane of the L-PBF system (1). The bottom-up powder conveying mechanism comprises an external reservoir (9) that can be closed in a gas-tight manner and that is connected to a gas-tight conduit to conduct powder in a gas-tight manner via said conduit from the reservoir (9) into the reservoir that is operated as a powder reservoir. In order to devise an improved bottom-up powder conveying mechanism that can particularly be extended in modular fashion, the reservoir (5b, 5c) that is operated as a powder reservoir has, in a sidewall (6b, 6c), an opening (15a, 15b), which is lower with respect to the top opening, through which the reservoir (5b, 5c) can be filled with powder and that can be connected to the conduit in a gas-tight and detachable fashion to conduct powder from the external reservoir (9) arranged above the opening (15a, 15b) through the sloping conduit in a gravity-driven fashion and through the lower opening (15a, 15b) to the reservoir (5b, 5c) that is operated as a powder reservoir. The invention further relates to an L-PBF system (1) comprising a bottom-up powder conveying mechanism and to a method for retrofitting said L-PBF system (1).
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机译:本发明涉及一种用于激光粉末床熔合(L-PBF)系统( 1 B>)的自下而上的粉末输送机构,其包括储存器( 5 B> )。 b, I> 5 B> c I>),其底部可以像活塞一样移动,所述储液器用作粉末储液器,以沿粉末的方向输送粉末储藏室的顶部开口( 5 B> b, I> 5 B> c I>)与地面相对并/或穿过顶部容器( 5 B> b, I> 5 B> c I>)的开口并因此朝向L-PBF的工作平面系统( 1 B>)。自下而上的粉末输送机构包括外部容器( 9 B>),该外部容器可以气密方式关闭,并连接到气密导管以气密方式输送粉末通过所述导管从容器( 9 B>)进入作为粉末容器运行的容器。为了设计一种改进的自下而上的粉末输送机构,该输送机构尤其可以以模块化的方式扩展,该储罐( 5 B> b, I> 5 B> <用作粉末容器的I> c I>)在侧壁( 6 B> b, I> 6 B> c I>),开口( 15 B> a, I> 15 B> b I>)相对于顶部开口,通过该开口可以将粉末填充到容器( 5 B> b, I> 5 B> c I>)中,可以气密且可拆卸的方式连接到导管,以从位于开口( 15 B> a, / I> 15 B> b I>)以重力方式通过倾斜导管并通过下部开口( 15 B> a,< / I> 15 B> b I>)到存储库( 5 B> b, I> 5 B> < I> c I>)作为粉末储罐运行。本发明还涉及一种包括自下而上的粉末输送机构的L-PBF系统( 1 B>),以及一种用于改造所述L-PBF系统( 1 B>)的方法。
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