公开(公告)号：US11643754B2

公开(公告)日：2023-05-09

申请号：US16750514

申请日：2020-01-23

Applicant: Stratasys, Inc.

Inventor： Christopher Scott Graley ,  Christine Lawrence Sumerel ,  James E. Orrock

IPC: D01F8/10 ,  B29C64/118 ,  D01F1/10 ,  D01F8/08 ,  B33Y80/00 ,  B33Y70/00 ,  D01F8/04 ,  B33Y70/10 ,  B29L9/00 ,  B29K33/00 ,  B29K505/12 ,  B29C48/07 ,  B29C48/16 ,  B29C48/00 ,  B29C48/154 ,  B29K305/00 ,  B29K309/02 ,  B29K307/04

CPC classification number: D01F8/10 ,  B29C64/118 ,  B33Y70/10 ,  B33Y80/00 ,  D01F1/10 ,  D01F8/04 ,  D01F8/08 ,  B29C48/0021 ,  B29C48/07 ,  B29C48/154 ,  B29C48/16 ,  B29K2033/08 ,  B29K2305/00 ,  B29K2307/04 ,  B29K2309/02 ,  B29K2505/12 ,  B29L2009/00 ,  Y10T428/2913 ,  Y10T428/2927 ,  Y10T428/2929 ,  Y10T428/2938 ,  Y10T428/2967

Abstract: A consumable filament for use in an extrusion-based additive manufacturing system, where the consumable filament comprises a core portion of a matrix of a first base polymer and particles dispersed within the matrix, and a shell portion comprising a same or a different base polymer. The consumable filament is configured to be melted and extruded to form roads of a plurality of solidified layers of a three-dimensional part, and where the roads at least partially retain cross-sectional profiles corresponding to the core portion and the shell portion of the consumable filament and retain the particles within the roads of the printed part and do not penetrate the outer surface of the shell portion.

公开(公告)号：US20230114749A1

公开(公告)日：2023-04-13

申请号：US17974802

申请日：2022-10-27

Applicant: Stratasys, Inc.

Inventor： Cody Smith ,  Christopher Herbst ,  Ross Michalkiewicz ,  Shawn Michael Koop

IPC: B29C64/321 ,  B29C64/118 ,  B29C64/209 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/393

Abstract: A low pull force system for feeding a filament along a feed path from a source to a liquefier in a 3D printer includes a low compressive force loading drive for advancing filament from the source, a feed drive for advancing filament into the liquefier, and an in-line accumulator comprising a telescoping joint positioned in the feed path between the loading drive and the feed drive. When the telescoping joint is in a contracted position, the loading drive activates to feed filament into the feed path at a rate faster than a rate at which the feed drive advances filament into the liquefier, causing the telescoping joint to expand and accrue a slack of filament in the feed path. When the telescoping joint reaches an extended position, the loading drive deactivates while the feed drive continues to advance filament into the liquefier, and the slack of filament is consumed.

公开(公告)号：US20230035689A1

公开(公告)日：2023-02-02

申请号：US17965699

申请日：2022-10-13

Applicant: Stratasys, Inc.

Inventor： Christopher Prucha ,  Joel Ong ,  John Paton

IPC: B29C64/364 ,  B33Y30/00 ,  B29C64/245 ,  B29C64/25 ,  B01D71/32 ,  B29C64/255 ,  B29C64/135 ,  B29C64/379

Abstract: An additive manufacturing system including a base assembly and a tray assembly. The base assembly includes a build window, substantially transparent to electromagnetic radiation; a projection system configured to project electromagnetic radiation toward an upper surface of the build window; and a tray seat arranged around a perimeter of the build window. The tray assembly is configured to engage with the base assembly in an engaged configuration and includes: a tray structure defining a registration feature configured to engage the tray seat to locate an aperture proximal to the upper surface of the build window in the engaged configuration; and a separation membrane that is configured to laminate across the upper surface of the build window in response to an evacuation of gas from an interstitial region and configured to separate from the build window in response to injection of gas into the interstitial region.

公开(公告)号：US20230034915A1

公开(公告)日：2023-02-02

申请号：US17965685

申请日：2022-10-13

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha ,  Stephanie Benight ,  Bill Buel

IPC: B29C64/364 ,  B29C64/393 ,  B29C64/135 ,  B33Y50/02 ,  B29C64/295 ,  B33Y10/00 ,  B29C64/255 ,  B29C64/124 ,  B29C64/232 ,  B29C64/129 ,  B33Y40/00

Abstract: A method for additive manufacturing includes: at a build tray arranged over a build window and containing a resin reservoir of a resin, heating the resin reservoir toward a target bulk resin temperature less than a heat deflection temperature of the resin in a photocured state; at a resin interface between a surface of the build window and the resin reservoir, heating an interface layer of the resin reservoir toward a target reaction temperature; and, in response to the resin reservoir exhibiting a first temperature proximal the target bulk resin temperature and to the interface layer exhibiting a second temperature proximal the target reaction temperature: at the resin interface, selectively photocuring a first volume of the resin to form a first layer of a build adhered to a build platform; and retracting the build platform away from the build window.

公开(公告)号：US11498281B2

公开(公告)日：2022-11-15

申请号：US17509659

申请日：2021-10-25

Applicant: Stratasys, Inc.

Inventor： Clint Newell

IPC: B29C64/118 ,  B29C64/245 ,  B29C64/227 ,  B29C64/379 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/295 ,  B29C64/209 ,  B25J9/04 ,  B29C64/106 ,  G06F30/00 ,  B29C64/241 ,  B33Y40/10 ,  B29C64/393 ,  B33Y50/02 ,  B33Y40/00 ,  B33Y70/00 ,  B29C64/30 ,  G06F119/18

Abstract: A multiple axis robotic additive manufacturing system includes a robotic arm movable in six degrees of freedom. The system includes a build platform movable in at least two degrees of freedom and independent of the movement of the robotic arm to position the part being built to counteract effects of gravity based upon part geometry. The system includes an extruder mounted at an end of the robotic arm. The extruder is configured to extrude at least part material with a plurality of flow rates, wherein movement of the robotic arm and the build platform are synchronized with the flow rate of the extruded material to build the 3D part.

公开(公告)号：US11485079B2

公开(公告)日：2022-11-01

申请号：US17131332

申请日：2020-12-22

Applicant: Stratasys, Inc.

Inventor： Josh Durand ,  Jeff Lee Chapman

IPC: B29C64/232 ,  B29C64/209 ,  B29C64/245 ,  B29C64/25 ,  B29C64/393 ,  B29C64/236 ,  B33Y50/02 ,  B33Y30/00

Abstract: A z-lift and leveling assembly for leveling a platen in a heated chamber of a 3D printer includes first, second, third, and fourth z-actuators in a rectangular configuration. Each z-actuator includes a linear drive configured to supply motion in the z-direction and a mounting bracket secured to the linear drive and configured to move with the linear drive in the z-direction. The assembly includes a set of four pin couplings each associated with one of the first, second, third and fourth z-actuators. Each pin coupling includes a pivot block secured to the mounting bracket with a first pivot pin forming a first pin joint between the mounting bracket and the pivot block, where the pivot block is configured to move relative to the mounting bracket about a first pivot axis of the first pivot pin. The pivot block is secured to the platen or an arm of the platen with a second pivot pin forming a second pin joint such that the pivot block and the platen move relative to each other about a second pivot axis. As the mounting bracket is moved, the pivot block moves relative to the mounting bracket about the first pivot axis and the pivot block moves relative to the platen about the second pivot axis such that a z-position of the platen can be manipulated to and maintained in a substantially level configuration in the z-direction though the independent manipulation of the first, second, third and fourth z-actuators and wherein the substantially level configuration can be maintained when the platen is incremented in the z-direction during printing of a part.

公开(公告)号：US20220193996A1

公开(公告)日：2022-06-23

申请号：US17131332

申请日：2020-12-22

Applicant: Stratasys, Inc.

Inventor： Josh Durand ,  Jeff Lee Chapman

IPC: B29C64/232 ,  B29C64/209 ,  B29C64/245 ,  B29C64/236 ,  B29C64/25 ,  B29C64/393

Abstract: A z-lift and leveling assembly for leveling a platen in a heated chamber of a 3D printer includes first, second, third, and fourth z-actuators in a rectangular configuration. Each z-actuator includes a linear drive configured to supply motion in the z-direction and a mounting bracket secured to the linear drive and configured to move with the linear drive in the z-direction. The assembly includes a set of four pin couplings each associated with one of the first, second, third and fourth z-actuators. Each pin coupling includes a pivot block secured to the mounting bracket with a first pivot pin forming a first pin joint between the mounting bracket and the pivot block, where the pivot block is configured to move relative to the mounting bracket about a first pivot axis of the first pivot pin. The pivot block is secured to the platen or an arm of the platen with a second pivot pin forming a second pin joint such that the pivot block and the platen move relative to each other about a second pivot axis. As the mounting bracket is moved, the pivot block moves relative to the mounting bracket about the first pivot axis and the pivot block moves relative to the platen about the second pivot axis such that a z-position of the platen can be manipulated to and maintained in a substantially level configuration in the z-direction though the independent manipulation of the first, second, third and fourth z-actuators and wherein the substantially level configuration can be maintained when the platen is incremented in the z-direction during printing of a part.

公开(公告)号：US20220176623A1

公开(公告)日：2022-06-09

申请号：US17543369

申请日：2021-12-06

Applicant: Stratasys, Inc.

Inventor： J. Samuel Batchelder

IPC: B29C64/124 ,  B33Y10/00 ,  B29C64/188 ,  B29C64/20 ,  B33Y30/00

Abstract: A method for printing a 3D part in a layer-wise manner includes providing a pool of polymerizable liquid in a vessel over a build window and positioning a downward-facing build platform in the pool, thereby defining a build region above the build window. The method includes selectively curing a volume of polymerizable liquid in the build region by imparting electromagnetic radiation through the build window to form a printed layer of the part adhered to the build platform and actively cooling the build window to remove energy imparted by the electromagnetic radiation and the polymerization reaction of the polymerizable liquid such that the printed layer is between about 1° C. and about 30° C. below an average part temperature prior to raising the print layer and printing the next layer.

公开(公告)号：US20220055311A1

公开(公告)日：2022-02-24

申请号：US17518510

申请日：2021-11-03

Applicant: Stratasys, Inc.

Inventor： Joel Ong ,  Christopher Prucha

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02

Abstract: An additive manufacturing system configured to: during a first build cycle of an additive manufacturing process for manufacturing a first layer of a build, sampling a first set of sensor data streams via the sensor suite; calculate a first likelihood of failure of the build based on the first set of sensor data streams; in response to calculating the first likelihood of failure within a first likelihood range, flag the build to indicate the first likelihood of failure; and in response to calculating the first likelihood of failure within a second likelihood range greater than the first likelihood range, pause the additive manufacturing process, and notify an operator of the additive manufacturing system of the first likelihood of failure.

公开(公告)号：US20220016837A1

公开(公告)日：2022-01-20

申请号：US17294116

申请日：2019-11-14

Applicant: Stratasys, Inc.

Inventor： Matt PeKarna ,  Shawn Koop ,  Peter Schuller ,  Jordan Nadeau ,  David Alvig

IPC: B29C64/227 ,  B33Y40/00 ,  B29C64/118 ,  B29C64/321 ,  B65H51/10

Abstract: A filament drive mechanism for use with an additive manufacturing system includes at least first and second drives. Each drive includes a first rotatable shaft and a second rotatable shaft engaged with the first rotatable shaft in a counter rotational configuration. Each drive includes a pair of filament engagement elements, one on each rotatable shaft, and positioned on opposing sides of the filament path with a gap therebetween so as to engage a filament provided in the filament path. The drive mechanism includes a bridge follower configured to rotatably couple the first drive to the second drive wherein one of the shafts is a drive shaft configured to be driven by a motor at a rotational rate selected to advance the filament at a desired feed rate and to cause the other shafts to rotate at the same rotational rate, such that each pair of filament engagement teeth will engage a filament in the filament path and will coordinate to advance the filament while counter-rotating at the same rotational rate to drive the filament into a liquefier.