公开(公告)号：US20230405932A1

公开(公告)日：2023-12-21

申请号：US18453794

申请日：2023-08-22

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik TJELLESEN ,  Anders HARTMANN ,  Alexander RASMUSSEN

IPC: B29C64/307 ,  B29C64/214 ,  B29C64/314 ,  B29C64/321 ,  B29C64/357 ,  B29C64/153 ,  B29C64/245 ,  B29C64/255 ,  B29C64/295 ,  B33Y40/00 ,  B22F10/73 ,  B22F12/50

CPC classification number: B29C64/307 ,  B29C64/214 ,  B29C64/314 ,  B29C64/321 ,  B29C64/357 ,  B29C64/153 ,  B29C64/245 ,  B29C64/255 ,  B29C64/295 ,  B33Y40/00 ,  B22F10/73 ,  B22F12/50 ,  B33Y30/00

Abstract: A method for recirculating powder in an apparatus for manufacturing a three-dimensional object from the powder. The powder recirculation method includes: providing powder in a powder repository, the powder being one of fresh powder, excess powder or a blend thereof; transferring the powder from the repository to a work surface; distributing the powder across a build surface and resulting in a portion of the powder defining excess powder; returning the excess powder back to the repository; monitoring the amount of powder in the repository relative to a predetermined amount of powder; and delivering fresh powder from a powder tank to the repository when the amount of powder in the repository is less than the predetermined amount and not delivering fresh powder when excess powder is being returned to repository and the amount of powder in the repository is greater than the predetermined amount of powder.