公开(公告)号：US20240025125A1

公开(公告)日：2024-01-25

申请号：US18225321

申请日：2023-07-24

Applicant: MARKFORGED, INC.

Inventor： Nicholas Kalweit ,  Corey Hazeltine Walsh ,  Harrison Davis ,  Vinay Francis Rodrigues ,  Agamemnon Despopoulos

IPC: B29C64/40 ,  B33Y10/00

CPC classification number: B29C64/40 ,  B33Y10/00 ,  B29K2079/085

Abstract: Methods of reducing warping of a printed part are disclosed. The method includes depositing a raft comprising a first printable material onto a build platen of a three-dimensional printer. The method includes depositing a support material comprising a second printable material onto the raft. The method further includes depositing an anchor comprising one or more anchor shells of the first printable material onto the raft. The anchor is deposited within the support material. The method further includes printing a part made from the first material above the support material. The securing the part to the anchor by depositing one or more skirt shells comprising the first printable material about the periphery of the part and onto the anchor. The anchor has substantially the same shape as the part.

公开(公告)号：US20240100772A1

公开(公告)日：2024-03-28

申请号：US18371273

申请日：2023-09-21

Applicant: MARKFORGED, INC.

Inventor： Benjamin Fine ,  Nathaniel Berman ,  Angus MacMullen ,  David Piper ,  Nicholas Kalweit ,  Peter Kelly

IPC: B29C64/209 ,  B29C64/118 ,  B33Y30/00

CPC classification number: B29C64/209 ,  B29C64/118 ,  B33Y30/00

Abstract: A three-dimensional printer for the additive manufacturing of a part is provided. The printer includes a build platen, a pre-extrusion system, and a print head located downstream of the pre-extrusion system and configured to receive and deposit a filament. The print head includes a receiving section configured to receive the filament, an outlet through which the filament is deposited onto the build platen or a previously added layer of a part, a feeding mechanism constructed and arranged to feed the filament into the outlet, and a path length adjustment system positioned on the print head disposed between the pre-extrusion system and the feeding mechanism. The path length adjustment system constructed and arranged to create slack in the filament being delivered from the pre-extrusion system. Path length adjustment devices incorporating sliding components and flexure components are also disclosed.