公开(公告)号：US20240123686A1

公开(公告)日：2024-04-18

申请号：US18484693

申请日：2023-10-11

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Christoffer Raad Petersen ,  Torben Lange ,  Anders Hartmann ,  David Armand ,  Kristian Noergaard

IPC: B29C64/295 ,  B29C64/153 ,  B29C64/343 ,  B29C64/386

CPC classification number: B29C64/295 ,  B29C64/153 ,  B29C64/343 ,  B29C64/386 ,  B33Y10/00

Abstract: A method of operating an apparatus for the layerwise manufacture of 3D objects. The method includes two or more operational cycles of a warm up phase, starting from ambient, followed by a build phase and a cooling phase. The warm up phase and the build phase each include a layer cycle of: (a) dosing build material to the work surface; (b) distributing a portion of the dosed amount over a build area; (c) heating the dosed amount; and (d) monitoring a temperature of the build material to determine a thermal state. The build phase includes melting layer-specific regions. These steps are repeated until the warm up and build phases are completed. A property of the subsequent warm up phases is determined such that the duration of a subsequent warm up phase is shorter than the duration of a preceding warm up phase.

公开(公告)号：US11787116B2

公开(公告)日：2023-10-17

申请号：US17784523

申请日：2020-12-11

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Anders Hartmann ,  Marcel Garrido Barrabes ,  Steffen Kongensbjerg Larsen

IPC: B29C64/286 ,  B33Y30/00 ,  B29C64/282 ,  B29C64/153 ,  B29C64/245 ,  B29C64/236

CPC classification number: B29C64/286 ,  B29C64/153 ,  B29C64/236 ,  B29C64/245 ,  B29C64/282 ,  B33Y30/00

Abstract: An infrared radiation deflector (100) for an elongate infrared lamp (110), the radiation deflector (100) comprising opposing first and second elongate side walls (130_1, 130_2); at least one end support (170) connecting the ends of the side walls (130_1, 130_2); an upper opening (140) and a lower opening (150) arranged to pass lamp radiation to an exterior of the radiation deflector (100); and a mounting point (172) provided at the/each end support (170) for mounting the infrared lamp (110) and defining between them a lamp axis location (114); wherein the first and second elongate side walls (130_1, 130_2) comprise a first elongate mirror (130_1) and a second elongate mirror (130_2) extending parallel to the lamp axis location (114) and along at least a lower internal portion of the respective first and second side walls (130_1, 130_2); wherein the lamp axis location (114) extends along and between the first mirror (130_1) and the second mirror (130_2), the first and second mirror (130_1, 130_2) each having a concave surface with respect to the lamp axis location (114); and wherein the first mirror (130_1) is an upward deflecting mirror and further arranged to be concave with respect to the upper opening (140) for redirecting at least a portion of direct lamp radiation through the upper opening (140).

公开(公告)号：US12115729B2

公开(公告)日：2024-10-15

申请号：US17610153

申请日：2020-12-11

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Anders Hartmann ,  Marcel Garrido Barrabes ,  Steffen Kongensbjerg Larsen

IPC: B29C64/286 ,  B29C64/153 ,  B29C64/236 ,  B29C64/245 ,  B29C64/282 ,  B33Y30/00

CPC classification number: B29C64/286 ,  B29C64/153 ,  B29C64/236 ,  B29C64/245 ,  B29C64/282 ,  B33Y30/00

Abstract: An infrared lamp assembly for an apparatus for the formation of three-dimensional objects by consolidation of particulate material, the assembly comprising: an elongate infrared lamp extending along a lamp axis, an elongate shield extending parallel to and along one side of the axis of the lamp, and a support structure holding at least one of the ends of the lamp and of the shield, wherein the elongate shield at least partially bounds the space to one side of the lamp, and wherein the assembly provides a lower opening below the lamp and an upper opening above the lamp, such that, in use, radiation generated by the lamp is able to radiate through the openings and away from the lamp in directions not bounded by the shield.

公开(公告)号：US11660809B2

公开(公告)日：2023-05-30

申请号：US17311242

申请日：2019-12-05

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik Tjellesen ,  Anders Hartmann ,  Neil Hopkinson

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/209 ,  B29C64/236 ,  B29C64/218 ,  B33Y40/10 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B29C64/282 ,  B29C64/314 ,  B29C64/277 ,  B22F12/67 ,  B22F10/68 ,  B22F10/73 ,  B22F12/41 ,  B22F12/90

CPC classification number: B29C64/165 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B22F12/67 ,  B29C64/209 ,  B29C64/218 ,  B29C64/236 ,  B29C64/277 ,  B29C64/282 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B22F10/68 ,  B22F10/73 ,  B22F12/41 ,  B22F12/90

Abstract: Apparatus (1) for manufacturing a three-dimensional object from a powder, the apparatus (1) comprising: a build bed (201) having a build area (190), wherein successive layers of said three-dimensional object are formed in the build bed (201); a powder distribution sled (300) operable to distribute a layer of powder within the build area (190), the powder distribution sled (300) being driveable in a first direction along a first axis, across the build area (190), and driveable in a second direction, opposite to the first direction, along the first axis; and a print sled (350) operable to deposit a pattern of fluid onto the layer of powder within the build area (190) to define the cross section of said object in said layer, the print sled (350) being driveable in the first direction along a second axis across the build area, and driveable in the second direction along the second axis; wherein the first axis is parallel to, or coaxial with, the second axis; wherein the print sled (350) comprises one or more droplet deposition heads (370) for depositing the fluid, a first radiation source assembly (L1), and a second radiation source assembly (L2); wherein the powder distribution sled (300) comprises a powder distribution device (320) for distributing the powder, a third radiation source assembly (L3) and a fourth radiation source assembly (L4); and wherein each of the first, second, third and fourth radiation source assemblies is operable to both preheat and sinter powder within the build area (190). A method of manufacturing a three-dimensional object from a powder using such apparatus is also provided.

公开(公告)号：US12138859B2

公开(公告)日：2024-11-12

申请号：US18367346

申请日：2023-09-12

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Anders Hartmann ,  Marcel Garrido Barrabes ,  Steffen Kongensbjerg Larsen

IPC: B29C64/286 ,  B29C64/153 ,  B29C64/236 ,  B29C64/245 ,  B29C64/282 ,  B33Y30/00

Abstract: An apparatus for formation of three-dimensional objects and having an infrared radiation deflector. The radiation deflector includes opposing first and second elongate side walls; at least one end support connecting the side walls; an upper opening and a lower opening arranged to pass lamp radiation to an exterior of the radiation deflector; and a mounting point provided at the/each end support for mounting an infrared lamp. The side walls include first and second elongate mirrors extending parallel to a lamp axis and along a lower internal portion of the respective side walls. The lamp axis extends along and between the first and second mirrors, each of which has a concave surface with respect to the lamp axis. The first mirror is an upward deflecting mirror and is arranged for redirecting at least a portion of direct lamp radiation through the upper opening.

公开(公告)号：US20220388240A9

公开(公告)日：2022-12-08

申请号：US17311242

申请日：2019-12-05

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik Tjellesen ,  Anders Hartmann ,  Neil Hopkinson

IPC: B29C64/165 ,  B29C64/209 ,  B29C64/236 ,  B29C64/314 ,  B29C64/277 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B29C64/218

Abstract: Apparatus (1) for manufacturing a three-dimensional object from a powder, the apparatus (1) comprising: a build bed (201) having a build area (190), wherein successive layers of said three-dimensional object are formed in the build bed (201); a powder distribution sled (300) operable to distribute a layer of powder within the build area (190), the powder distribution sled (300) being driveable in a first direction along a first axis, across the build area (190), and driveable in a second direction, opposite to the first direction, along the first axis; and a print sled (350) operable to deposit a pattern of fluid onto the layer of powder within the build area (190) to define the cross section of said object in said layer, the print sled (350) being driveable in the first direction along a second axis across the build area, and driveable in the second direction along the second axis; wherein the first axis is parallel to, or coaxial with, the second axis; wherein the print sled (350) comprises one or more droplet deposition heads (370) for depositing the fluid, a first radiation source assembly (L1), and a second radiation source assembly (L2); wherein the powder distribution sled (300) comprises a powder distribution device (320) for distributing the powder, a third radiation source assembly (L3) and a fourth radiation source assembly (L4); and wherein each of the first, second, third and fourth radiation source assemblies is operable to both preheat and sinter powder within the build area (190). A method of manufacturing a three-dimensional object from a powder using such apparatus is also provided.

公开(公告)号：US11986998B2

公开(公告)日：2024-05-21

申请号：US17782817

申请日：2020-12-03

Applicant: Stratasys Powder Production Ltd.

Inventor： Marcel Garrido ,  Anders Hartmann ,  Gianluca Dorini ,  Simon Bak ,  Hans Niels-Christiansen

IPC: B29C64/165 ,  B29C64/209 ,  B29C64/264 ,  B29C64/364 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/165 ,  B29C64/209 ,  B29C64/264 ,  B29C64/364 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: An apparatus (1) for manufacturing a three-dimensional object from particulate material, the apparatus comprising: • a work space (100) bounded by a first side wall (100A) on a first side of the work space, and a second side wall (100B) on a second side of the work space, the first side wall opposing the second side wall; • a build bed (170) having a build bed surface (160), the build bed surface being comprised in the floor of the work space and having a first edge (160′) on the first side of the work space, towards the first side wall, and a second edge (160″) on the second side of the work space, towards the second side wall; • a first gas inlet (101A) at or near the first side wall; • a second gas inlet (101B) at or near the second side wall; • a first gas outlet (102A) above the floor (100C) of the work space, the position of the first gas outlet being coincident with the first edge of the build bed surface, or between the first edge of the build bed surface and the first gas inlet; and • a second gas outlet (102B) above the floor of the work space, the position of the second gas outlet being coincident with the second edge of the build bed surface, or between the second edge of the build bed surface and the second gas inlet; • wherein the first gas outlet is positioned higher in the work space than the first gas inlet, and the second gas outlet is positioned higher in the work space than the second gas inlet; and • wherein one or more flow devices (210, 211, 212) are operable to create first and second gas flows between the first gas inlet and the first gas outlet, and between the second gas inlet and the second gas outlet, respectively, such as to create respective first and second gas curtains on the first and second sides of the work space in use.

公开(公告)号：US20240123687A1

公开(公告)日：2024-04-18

申请号：US18484643

申请日：2023-10-11

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Christoffer Raad Petersen ,  Anders Hartmann ,  David Armand

IPC: B29C64/343 ,  B29C64/214 ,  B29C64/295 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

CPC classification number: B29C64/343 ,  B29C64/214 ,  B29C64/295 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

Abstract: A method of operating an apparatus for the layerwise manufacture of 3D objects. The method includes a warm up phase followed by a build phase. The phases each include a cycle of (a) dosing an amount of build material from a dosing device; (b) pushing a portion of the dosed amount across a build area into a receiving chamber; (c) heating the dosed amount at one or both of (a) and (b); repeating (a) to (c) until each phase is complete. During the build phase, at step (b) a layer is formed over the build area and, at step (c), build material within a layer-specific region is selectively melted. Over a given duration of time, an aggregate volume of build material pushed into the receiving chamber during the warm up phase is larger than an aggregate volume of build material pushed into the receiving chamber during the build phase.

公开(公告)号：US20230249400A1

公开(公告)日：2023-08-10

申请号：US18301478

申请日：2023-04-17

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik Tjellesen ,  Anders Hartmann ,  Neil Hopkinson

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/314 ,  B29C64/209 ,  B29C64/236 ,  B29C64/277 ,  B29C64/218 ,  B33Y40/10 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B22F12/67 ,  B29C64/282

CPC classification number: B29C64/165 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B22F12/67 ,  B29C64/209 ,  B29C64/218 ,  B29C64/236 ,  B29C64/277 ,  B29C64/282 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B22F10/68

Abstract: A method of manufacturing a three-dimensional object from a powder to form each layer of the object. The method includes the steps of driving a powder distribution sled in a first direction to distribute a layer of powder; driving a print sled in the first direction; driving the print sled and the powder distribution sled in a second direction; preheating the layer of powder by activating multiple radiation sources during various ones of the driving steps; during some of the driving steps, depositing a pattern of fluid onto the layer of powder; and sintering the powder on which fluid was deposited only in the second direction, by activating the at least one radiation source assembly during various ones of the driving steps in that direction. Repeating the above steps to distribute the next layer of powder.

公开(公告)号：US12005642B2

公开(公告)日：2024-06-11

申请号：US18301478

申请日：2023-04-17

Applicant: Stratasys Powder Production Ltd.

Inventor： Frederik Tjellesen ,  Anders Hartmann ,  Neil Hopkinson

IPC: B29C64/165 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B22F12/67 ,  B29C64/209 ,  B29C64/218 ,  B29C64/236 ,  B29C64/277 ,  B29C64/282 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B22F10/68 ,  B22F10/73 ,  B22F12/41 ,  B22F12/90

CPC classification number: B29C64/165 ,  B22F10/14 ,  B22F10/28 ,  B22F12/13 ,  B22F12/45 ,  B22F12/67 ,  B29C64/209 ,  B29C64/218 ,  B29C64/236 ,  B29C64/277 ,  B29C64/282 ,  B29C64/314 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B22F10/68 ,  B22F10/73 ,  B22F12/41 ,  B22F12/90

Abstract: A method of manufacturing a three-dimensional object from a powder to form each layer of the object. The method includes the steps of driving a powder distribution sled in a first direction to distribute a layer of powder; driving a print sled in the first direction; driving the print sled and the powder distribution sled in a second direction; preheating the layer of powder by activating multiple radiation sources during various ones of the driving steps; during some of the driving steps, depositing a pattern of fluid onto the layer of powder; and sintering the powder on which fluid was deposited only in the second direction, by activating the at least one radiation source assembly during various ones of the driving steps in that direction. Repeating the above steps to distribute the next layer of powder.