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公开(公告)号：US11484944B2
公开(公告)日：2022-11-01
申请号：US16774124
申请日：2020-01-28
Applicant: 3D Systems, Inc.
Inventor： Robert W. Beauchamp , Jonathan Watson
Abstract: A three-dimensional printing system for manufacturing three-dimensional articles includes an apparatus, a filtration system, and a controller. The apparatus is a fabrication system that generates ignitable powder dust in an inert atmosphere fluid stream. The filtration system receives the fluid stream and has a plurality of filter units in a parallel arrangement including at least a first filter unit and a second filter unit. The controller is configured to control the filtration unit and to thereby individually operate the plurality of filter units in two states including a filtration state and an oxidation state. When one of the plurality of filter units is operating in the filtration state another of the plurality of filter units is operating in the oxidation state.
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公开(公告)号：US20220168810A1
公开(公告)日：2022-06-02
申请号：US17402783
申请日：2021-08-16
Applicant: 3D Systems, Inc.
Inventor： Jonathan Watson , Kirt Winter
Abstract: A three-dimensional (3D) printing system for manufacturing a three-dimensional (3D) article includes a support powder dispenser containing support powder, a metal powder dispenser containing metal powder, a build plate, a beam system, and a controller. The controller is configured to (1) receive information defining a two-dimensional (2D) slice of the 3D article, (2) position the build plate to receive a new layer of metal powder, (3) operate the metal powder dispenser to dispense the new layer of metal powder, the new layer of metal powder spanning the 2D slice and extending beyond the boundaries to define a zone of unfused powder, (4) operate the beam system to selectively fuse the new layer of powder over an area corresponding to the 2D slice, (5) operate the support powder dispenser to dispense a bounding contour of support powder proximate to or overlapping the zone of unfused powder.
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