公开(公告)号：US20190193155A1

公开(公告)日：2019-06-27

申请号：US16188487

申请日：2018-11-13

Applicant: ARCAM AB

Inventor： Stefan Olausson

IPC: B22F3/105 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2301/052 ,  B22F2301/205 ,  B29C64/20 ,  B33Y30/00 ,  B33Y50/02 ,  F16J15/08 ,  F16J15/3228

Abstract: Provided is a seal (19) for sealing against powder between a cylinder (14) of a build tank (5) and a build table (9) arranged in the cylinder of an additive manufacturing apparatus (1) for forming a three-dimensional article layer by layer from a powder. The seal (19) has an endless ring portion (21) for extending along a circumference of an inner surface (20) of the cylinder (14) and abutting against the inner surface (20).

公开(公告)号：US11273607B2

公开(公告)日：2022-03-15

申请号：US16684696

申请日：2019-11-15

Applicant: ARCAM AB

Inventor： Stefan Olausson ,  Håkan Sjölander

IPC: B29C64/35 ,  B29C64/357 ,  B29C64/232 ,  B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.

公开(公告)号：US20220134666A1

公开(公告)日：2022-05-05

申请号：US17089835

申请日：2020-11-05

Applicant: Arcam AB

Inventor： Stefan Olausson ,  Håkan Sjölander

IPC: B29C64/35 ,  B33Y40/00 ,  B24C1/08

Abstract: A blast nozzle for a depowdering apparatus includes an abrasive material inlet fluidly connected to an abrasive material outlet and a fluid inlet fluidly connected to a fluid outlet, where the fluid outlet at least partially surrounds the abrasive material outlet. The fluid outlet is angled with respect to the abrasive material outlet and configured to emit a fluid stream directed to a focal point, the focal point being laterally spaced apart from the blast nozzle in a fluid flow direction.

公开(公告)号：US12151436B2

公开(公告)日：2024-11-26

申请号：US17089835

申请日：2020-11-05

Applicant: Arcam AB

Inventor： Stefan Olausson ,  Håkan Sjölander

IPC: B29C64/35 ,  B24C1/08 ,  B33Y40/00

Abstract: A blast nozzle for a depowdering apparatus includes an abrasive material inlet fluidly connected to an abrasive material outlet and a fluid inlet fluidly connected to a fluid outlet, where the fluid outlet at least partially surrounds the abrasive material outlet. The fluid outlet is angled with respect to the abrasive material outlet and configured to emit a fluid stream directed to a focal point, the focal point being laterally spaced apart from the blast nozzle in a fluid flow direction.

公开(公告)号：US20210146621A1

公开(公告)日：2021-05-20

申请号：US16684696

申请日：2019-11-15

Applicant: ARCAM AB

Inventor： Stefan Olausson ,  Håkan Sjölander

IPC: B29C64/35 ,  B29C64/357 ,  B29C64/232 ,  B29C64/393

Abstract: A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.