公开(公告)号：US11878350B2

公开(公告)日：2024-01-23

申请号：US17487211

申请日：2021-09-28

Applicant: 3D Systems, Inc.

Inventor： Jose Julio Doval

IPC: B22F12/70 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/342 ,  B22F12/00 ,  B22F10/28 ,  B23K26/16 ,  B23K26/06 ,  B23K26/08

CPC classification number: B22F12/70 ,  B22F10/28 ,  B22F12/38 ,  B23K26/16 ,  B23K26/342 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/0604 ,  B23K26/083

Abstract: A three-dimensional (3D) print engine includes (A) a plurality of walls laterally defining a build chamber, (B) a build box including a build plate, (C) a powder dispenser, (D) a beam system for fusing layers of powder, (E) a peripheral plate disposed between the build plate and the plurality of walls and having an upper surface, (F) a gas inlet that ejects a gas flow stream that passes over the build plate and the peripheral plate, (G) a gas outlet that receives the gas flow stream, (H) a plurality of projecting structures mounted to and extending above the upper surface of the peripheral plate, and (I) a gas handling system coupled to the gas inlet and gas outlet. The plurality of projecting structures shape the flow field of the gas flow stream to provide a more uniform velocity of gas flow velocities above the build plane.

公开(公告)号：US20220105571A1

公开(公告)日：2022-04-07

申请号：US17487211

申请日：2021-09-28

Applicant: 3D Systems, Inc.

Inventor： Jose Julio Doval

IPC: B22F12/70 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B22F10/28 ,  B22F12/00 ,  B23K26/342 ,  B23K26/16

Abstract: A three-dimensional (3D) print engine includes (A) a plurality of walls laterally defining a build chamber, (B) a build box including a build plate, (C) a powder dispenser, (D) a beam system for fusing layers of powder, (E) a peripheral plate disposed between the build plate and the plurality of walls and having an upper surface, (F) a gas inlet that ejects a gas flow stream that passes over the build plate and the peripheral plate, (G) a gas outlet that receives the gas flow stream, (H) a plurality of projecting structures mounted to and extending above the upper surface of the peripheral plate, and (I) a gas handling system coupled to the gas inlet and gas outlet. The plurality of projecting structures shape the flow field of the gas flow stream to provide a more uniform velocity of gas flow velocities above the build plane.

公开(公告)号：US20220105570A1

公开(公告)日：2022-04-07

申请号：US17487270

申请日：2021-09-28

Applicant: 3D Systems, Inc.

Inventor： Bryon Robert Hazlewood ,  Jose Julio Doval ,  Evan C. Freiburg

IPC: B22F12/57 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B22F10/28 ,  B22F10/85 ,  B22F12/70 ,  B23K26/342

Abstract: A 3D printing system includes a print engine, a powder dispenser, and a controller. The print engine includes a chassis defining an inner chamber with a docking chamber, a build box with a build plate, an energy beam system, and a powder track coater (PTC) coupled to a gantry. The controller is configured to: (A) operate the gantry and the PTC to selectively dispense a track of powder over the build plate, (B) operate the gantry to transport the PTC to the docking station, (C) operate the energy beam system to selectively fuse the track of powder, and (D) concurrent with operating the energy beam to (D1) measure a level of powder in the PTC and (D2) if the level of powder in the PTC is below a predetermined threshold, operate the powder dispenser to transfer a controlled volume of powder to the PTC.