公开(公告)号：US11097476B2

公开(公告)日：2021-08-24

申请号：US16511110

申请日：2019-07-15

Applicant: Formlabs, Inc.

Inventor： Alexander Nolet ,  Benjamin FrantzDale ,  Dmitri Megretski

IPC: G01B21/02 ,  G01L5/00 ,  B29C64/227 ,  B29C64/124 ,  B29C64/232 ,  B29C64/393 ,  G01B5/06 ,  B33Y30/00 ,  B33Y50/02

Abstract: Techniques for measuring a position of a build platform in an additive fabrication device are provided. Such techniques may include detecting the onset and/or dissipation of force applied to a build platform as it moves from being in contact with, to being out of contact with, a container. In some embodiments, the techniques described herein may be applied in a stereolithographic additive fabrication device. According to some embodiments, measurement of forces applied to a build platform may be used to provide for reliable and consistent measurements of the height of the build platform relative to a container by measuring such forces at various positions of the build platform and analyzing the pattern of the forces with distance from the container.

公开(公告)号：US20210078251A1

公开(公告)日：2021-03-18

申请号：US16570981

申请日：2019-09-13

Applicant: Formlabs, Inc.

Inventor： Adam Damiano ,  Dmitri Megretski ,  Shane Wighton ,  Maxim Lobovsky

IPC: B29C64/255 ,  B29C64/245

Abstract: According to some aspects, an additive fabrication apparatus is provided configured to form layers of material on a build platform, each layer of material being formed so as to contact a supporting liquid or a film disposed within a container, in addition to the build platform, a liquid photopolymer, and/or a previously formed layer of a material. The additive fabrication apparatus may comprise a container and a leveling element, wherein the leveling element is configured to move across a liquid-liquid interface to promote or create a flat interface between the two liquids. According to some aspects, the additive fabrication comprises a film disposed between two liquids, wherein the film maintains or provides a flat surface at the interface of the two liquids.

公开(公告)号：US20190351614A1

公开(公告)日：2019-11-21

申请号：US16511110

申请日：2019-07-15

Applicant: Formlabs, Inc.

Inventor： Alexander Nolet ,  Benjamin FrantzDale ,  Dmitri Megretski

IPC: B29C64/227 ,  B29C64/124 ,  G01B5/06 ,  B29C64/393 ,  G01B21/02 ,  G01L5/00 ,  B29C64/232

Abstract: Techniques for measuring a position of a build platform in an additive fabrication device are provided. Such techniques may include detecting the onset and/or dissipation of force applied to a build platform as it moves from being in contact with, to being out of contact with, a container. In some embodiments, the techniques described herein may be applied in a stereolithographic additive fabrication device. According to some embodiments, measurement of forces applied to a build platform may be used to provide for reliable and consistent measurements of the height of the build platform relative to a container by measuring such forces at various positions of the build platform and analyzing the pattern of the forces with distance from the container.

公开(公告)号：US12233600B2

公开(公告)日：2025-02-25

申请号：US18062627

申请日：2022-12-07

Applicant: Formlabs Inc.

Inventor： Dmitri Megretski ,  Benjamin FrantzDale ,  Jacob Sanchez ,  Alec Rudd

IPC: B29C64/30 ,  B29C64/264 ,  B33Y40/00 ,  B29C64/124 ,  B29C64/188 ,  B29C64/223 ,  B29C64/245 ,  B33Y10/00 ,  B33Y30/00

Abstract: A method includes curing a photopolymer resin disposed between a first build surface and a flexible film layer to form a print layer of a printed part. Here, the print layer of the printed part defines a second build surface attached to the flexible film layer. The method also includes translating a peeling mechanism between the second build surface and the flexible film layer to detach the flexible film layer from the second build surface.

公开(公告)号：US20220362998A1

公开(公告)日：2022-11-17

申请号：US17710257

申请日：2022-03-31

Applicant: Formlabs, Inc.

Inventor： Adam Damiano ,  Dmitri Megretski ,  Shane Wighton ,  Maxim Lobovsky

IPC: B29C64/255 ,  B29C64/245

Abstract: According to some aspects, an additive fabrication apparatus is provided configured to form layers of material on a build platform, each layer of material being formed so as to contact a supporting liquid or a film disposed within a container, in addition to the build platform, a liquid photopolymer, and/or a previously formed layer of a material. The additive fabrication apparatus may comprise a container and a leveling element, wherein the leveling element is configured to move across a liquid-liquid interface to promote or create a flat interface between the two liquids. According to some aspects, the additive fabrication comprises a film disposed between two liquids, wherein the film maintains or provides a flat surface at the interface of the two liquids.

公开(公告)号：US20220258414A1

公开(公告)日：2022-08-18

申请号：US17672145

申请日：2022-02-15

Applicant: Formlabs, Inc.

Inventor： Zachary Zguris ,  Maxim Lobovsky ,  Dmitri Megretski

IPC: B29C64/165 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: A multi-component print surface and associated additive manufacturing methods are generally described.

公开(公告)号：US11167491B2

公开(公告)日：2021-11-09

申请号：US16427912

申请日：2019-05-31

Applicant: Formlabs, Inc.

Inventor： Benjamin FrantzDale ,  Konstantinos Oikonomopoulos ,  Shane Wighton ,  Dmitri Megretski ,  Adam Damiano ,  James Loomis ,  Christian Reed

IPC: B29C64/255 ,  B65D65/40 ,  B29C64/264 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/124 ,  B29C64/393 ,  B29C64/227 ,  G01L1/12 ,  G01L5/00 ,  G04F10/10 ,  B29C64/245 ,  B29C64/153 ,  B29C64/218 ,  B29C64/307 ,  B29C64/223 ,  B29C64/135 ,  B33Y40/00

Abstract: Multi-film containers for use in additive fabrication devices are provided. According to some aspects, a container may include multiple films that are at least partially detached from one another. In some embodiments, the multiple films may include films formed from different materials. As one example, an upper film may be formed so as to be relatively impermeable to substances within a source material of an additive fabrication device, whereas a lower film may be formed so as to provide desirable mechanical properties. In some cases, the multiple films may be commonly tensioned while being unattached to one another.

公开(公告)号：US20200338812A1

公开(公告)日：2020-10-29

申请号：US16926058

申请日：2020-07-10

Applicant: Formlabs, Inc.

Inventor： Dmitri Megretski ,  Manuel Odendahl ,  Eric M. Van Albert ,  Hugh L. Medal

IPC: B29C64/135 ,  B29C64/259

Abstract: According to some aspects, an additive fabrication device is provided comprising a container removably attached to the additive fabrication device, and a detector configured to sense a fluid level of photopolymer resin within the container, wherein said detector does not contact said container.

公开(公告)号：US20180312705A1

公开(公告)日：2018-11-01

申请号：US15962219

申请日：2018-04-25

Applicant: Formlabs, Inc.

Inventor： Dmitri Megretski ,  Maximilian Zieringer ,  Benjamin FrantzDale ,  Maxim Lobovsky

IPC: C09D11/101 ,  C09D11/037 ,  B33Y70/00

Abstract: The present application relates generally to photopolymer blends and related methods for use in an additive fabrication (e.g., 3-dimensional printing) device. According to some aspects, compositions are provided for the modification of a base photopolymer resin. The compositions may comprise colorant agent and/or cure-modifying composition. The compositions may be selected to cause, when combined with the base photopolymer resin to form a photo-curable composition, at least one property (e.g., color, depth of the cure) of the photo-curable composition to fall within a pre-determined range. Related kits and methods are also generally described.

公开(公告)号：US20170368747A1

公开(公告)日：2017-12-28

申请号：US15634055

申请日：2017-06-27

Applicant: Formlabs, Inc.

Inventor： Alexander Nolet ,  Ben FrantzDale ,  Dmitri Megretski

IPC: B29C64/227 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  G01L5/00 ,  G01B5/06

CPC classification number: B29C64/227 ,  B29C64/124 ,  B29C64/232 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  G01B5/061 ,  G01B21/02 ,  G01L5/0076

Abstract: According to some aspects, techniques for determining a position of a build platform in an additive fabrication device are provided. According to some embodiments, forces resisting separation of the build platform from an opposing surface are measured and a position of the build platform with respect to the opposing surface is determined. In some embodiments, such forces may include fluid forces present during separation of a build platform from an interior surface of a liquid photopolymer container.