US 12,383,961 B2
Powder discharge module for an additive manufacturing apparatus, additive manufacturing apparatus and method of applying a powder layer
Stefan Gruenberger, Munich (DE); Stefan Kneisel, Munich (DE); Gabriel Schneider, Kempten (DE); Stefanie Markl, Munich (DE); and Stefan Paternoster, Andechs (DE)
Assigned to EOS GmbH Electro Optical Systems, Krailling (DE)
Appl. No. 17/597,438
Filed by EOS GmbH Electro Optical Systems, Krailling (DE)
PCT Filed Jun. 24, 2020, PCT No. PCT/EP2020/067709
§ 371(c)(1), (2) Date Jan. 6, 2022,
PCT Pub. No. WO2021/004794, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 102019210120.8 (DE), filed on Jul. 9, 2019.
Prior Publication US 2022/0266346 A1, Aug. 25, 2022
Int. Cl. B22F 12/52 (2021.01); B22F 10/28 (2021.01); B22F 12/70 (2021.01); B29C 64/153 (2017.01); B29C 64/255 (2017.01); B29C 64/329 (2017.01); B29C 64/371 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B22F 12/52 (2021.01) [B22F 10/28 (2021.01); B22F 12/70 (2021.01); B29C 64/153 (2017.08); B29C 64/255 (2017.08); B29C 64/329 (2017.08); B29C 64/371 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 12 Claims
OG exemplary drawing
 
1. A powder discharge module for a recoating device of an apparatus for additively manufacturing a three-dimensional object by layer-wise applying building material in powder form and selectively solidifying applied layers of the building material at positions corresponding to a respective cross-section of the three-dimensional object in a respective layer, wherein for the layer-wise applying of the building material the recoating device is provided in the apparatus so as to be movable in at least one direction of movement across a working plane of the apparatus, the powder discharge module comprising:
a powder container that forms a chamber for receiving the building material in powder form, the powder container comprises:
a supply opening for supplying the building material in powder form to the chamber of the powder container;
a discharge section facing the working plane during intended operation of the recoating device, the discharge section having at least a first discharge device for discharging the building material in powder form from the chamber and at least one fluidization zone for fluidizing the building material in powder form using a gas in the chamber, and
at least a first flow reduction element and a second flow reduction element provided in the chamber, wherein the first and second flow reduction elements both extend from a ceiling of the powder container towards the discharge section and end at a distance from the discharge section.