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    Systems and methods for an improved peel operation during additive fabrication
    13.
    发明授权
    Systems and methods for an improved peel operation during additive fabrication 有权

    公开(公告)号：US11590689B2

    公开(公告)日：2023-02-28

    申请号：US17181404

    申请日：2021-02-22

    Applicant: Formlabs, Inc.

    Inventor： Steven Thomas ,  Yoav Reches ,  Jason Livingston ,  Jeffery Morin ,  Caitlin Reyda

    IPC: B29C64/10 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/135 ,  B29C64/379

    Abstract: According to some aspects, a method of additive fabrication wherein a plurality of layers of material are formed is provided. The method may comprise forming a layer of material in contact with a container, and subsequent to the forming of the layer of material, actively bending the container around at least one fixed point such that the layer of material separates from the container. According to some aspects, an additive fabrication apparatus configured to form a plurality of layers of material is provided. The apparatus may comprise a container, a build platform, one or more force generators, and at least one controller configured to, subsequent to formation of a layer of material in contact with the container, actively bend the container around at least one fixed point via the one or more force generators, such that the layer of material separates from the container.

    MATERIAL DISPENSING PUMP FOR ADDITIVE FABRICATION
    14.
    发明申请
    MATERIAL DISPENSING PUMP FOR ADDITIVE FABRICATION 有权

    公开(公告)号：US20220234291A1

    公开(公告)日：2022-07-28

    申请号：US17580969

    申请日：2022-01-21

    Applicant: Formlabs, Inc.

    Inventor： Thomas Orr

    IPC: B29C64/209 ,  B33Y30/00

    Abstract: According to some aspects, techniques are described that allow an additive fabrication device to dynamically adjust the size of a post metering volume for adjusting pressure of source material in the volume. These techniques may allow for greater control of material extrusion through an orifice and thereby mitigate or avoid issues of lag time between starting and/or stopping extrusion and/or in which there is unwanted emission of source material through the orifice. In some cases, techniques for adjusting the size of the post metering volume as described herein may include operating an actuator arranged in a channel that is coupled to the post metering volume. In some cases, techniques for adjusting the size of the post metering volume as described herein may include having a stator that is at least partially arranged within a chamber that defines the post metering volume and is free to move within the chamber.

    Multi-material separation layers for additive fabrication
    15.
    发明授权
    Multi-material separation layers for additive fabrication 有权

    公开(公告)号：US11167490B2

    公开(公告)日：2021-11-09

    申请号：US15807404

    申请日：2017-11-08

    Applicant: Formlabs, Inc.

    Inventor： Marcin Slaczka ,  Benjamin FrantzDale ,  Ian Ferguson

    IPC: B29C64/255 ,  B29C64/135 ,  B32B25/08 ,  B32B25/20 ,  B33Y30/00

    Abstract: According to some aspects, a container is provided for use in an additive fabrication device configured to fabricate parts by curing a liquid photopolymer to form layers of cured photopolymer. The container may comprise a laminated multi-material layer having an elastic first layer that aids in separation of cured photopolymer from the container in addition to a barrier layer on an upper surface that protects the first layer from exposure to substances in the liquid photopolymer that may not be compatible with the material of the first layer.

    OPTICAL SENSING TECHNIQUES FOR CALIBRATION OF AN ADDITIVE FABRICATION DEVICE AND RELATED SYSTEMS AND METHODS
    18.
    发明申请
    OPTICAL SENSING TECHNIQUES FOR CALIBRATION OF AN ADDITIVE FABRICATION DEVICE AND RELATED SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20200215762A1

    公开(公告)日：2020-07-09

    申请号：US16821486

    申请日：2020-03-17

    Applicant: Formlabs, Inc.

    Inventor： Benjamin FrantzDale ,  Justin Keenan

    IPC: B29C64/393 ,  G01B11/00 ,  B33Y50/02

    Abstract: Techniques of optically sensing fiducial targets, such as calibration patterns, within an additive fabrication device are provided. In some embodiments, fiducial targets may be disposed on a structure configured to contact source material of the additive fabrication device, the source material being a material from which the device is configured to fabricate solid objects. Indirect sensing means may be employed such that light emitted from a light source of the additive fabrication device scatters from the surface of a fiducial target. At least some of this scattered light can be measured by a sensor and used to determine a position of the fiducial target. In some embodiments, the fiducial target may be configured to move relative to the light source and/or sensor to provide additional information on the target's position via the light scattered from its surface.

    TECHNIQUES FOR ADDITIVE FABRICATION PROCESS OPTIMIZATION AND RELATED SYSTEMS AND METHODS
    20.
    发明申请
    TECHNIQUES FOR ADDITIVE FABRICATION PROCESS OPTIMIZATION AND RELATED SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20200164628A1

    公开(公告)日：2020-05-28

    申请号：US16776664

    申请日：2020-01-30

    Applicant: Formlabs, Inc.

    Inventor： Ben FrantzDale ,  Steven Thomas ,  Nicholas M. Sohn

    IPC: B33Y50/02 ,  B29C64/386 ,  B29C64/129 ,  B29C64/135 ,  B33Y10/00

    Abstract: According to some aspects, a method of additive fabrication is provided wherein a plurality of layers are formed on a build platform, each layer contacting a container in addition to the build platform and/or a previously formed layer, the method comprising calculating, using at least one processor, one or more forces to be applied to a first layer of the plurality of layers subsequent to the first layer being formed, said calculating being based at least in part on a determined area of at least one portion of the first layer that overhangs a second layer of the plurality of layers, forming the first layer, the first layer being in contact with the container and in contact with a previously formed layer of the plurality of layers, and separating the first layer from the container by applying the calculated one or more forces to the first layer.

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