公开(公告)号：WO2014044676A1

公开(公告)日：2014-03-27

申请号：PCT/EP2013/069275

申请日：2013-09-17

Applicant: BLUEPRINTER APS

Inventor： TJELLESEN, Frederik Walsted ,  HARTMANN, Anders Ørnsholt

IPC: B29C67/00

CPC classification number: B29C64/40 ,  B22F3/003 ,  B22F3/005 ,  B29C64/153 ,  B29C64/20 ,  B33Y30/00 ,  B33Y40/00 ,  B65G47/16

Abstract: A powder feed mechanism (10) for a three-dimensional printer in which a heap of powder is drawn up from a powder container to be spread across a material bed (12) rather than dropped or deposited on it. The mechanism comprises a carrier arm (26) that moves through a powder chamber (15), and a support platform (28) for carrying a heap of powdered build material. The support platform moves with the carrier arm. The carrier arm moves to a powder delivery position in which the support platform is in a transverse orientation for lying flush with the material bed. This arrangement can reduce the path travelled by the powder from the powder chamber to the material bed and give greater control over the shape of the heap of powder that is to be spread over the material bed.

Abstract translation: 一种用于三维打印机的粉末进给机构（10），其中一堆粉末从粉末容器中拉出以分散在材料床（12）上，而不是下落或沉积在其上。 该机构包括移动通过粉末室（15）的承载臂（26）和用于承载一堆粉状构建材料的支撑平台（28）。 支撑平台与承载臂一起移动。 承载臂移动到粉末输送位置，在该粉末输送位置，支撑平台处于与材料床平齐的横向取向。 这种布置可以减少粉末从粉末室移动到材料床上的路径，并且更好地控制要铺展在材料床上的粉末堆的形状。