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公开(公告)号：US20220143703A1
公开(公告)日：2022-05-12
申请号：US17433947
申请日：2019-04-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B22F10/68 , B33Y40/20 , B33Y50/00 , B22F10/80 , B22F12/90 , B08B5/02 , B08B7/02 , B08B7/04 , B08B13/00 , B29C64/35
Abstract: A three-dimensional printer is described, wherein the three-dimensional printer comprises a build unit and a material removal unit. The build unit is configured to generate a three dimensional object. The material removal unit comprises a housing, a plurality of gas inlets and outlets, a plurality of valves and a control unit. The housing is sealed to the build unit and is configured to house a cake comprising the generated three dimensional object. The valves are configured to open and close the inlets and outlets, and the control unit is configured to control the valves, to allow gas to flow from different inlets to different outlets in different flow paths, in order remove powder from the object.
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公开(公告)号：US20220193778A1
公开(公告)日：2022-06-23
申请号：US17604905
申请日：2019-10-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: According to one example, there is provided apparatus for restraining objects during a powder and object separation process. The apparatus comprises a base plate comprising a set of spatially arranged apertures, a set of rods, each rod slidable within a corresponding aperture of the base plate. The base plate is to connect with a chamber to contain a volume of powder and objects to be separated and the apparatus is configured such that, when the apparatus is connected to a chamber containing a volume of powder and 3D objects the set of rods are positionable in, or are slideable into, a position extending vertically away from the chamber, and as powder is removed from under each rod, the rods are to slide through the apertures.
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公开(公告)号：US20230049392A1
公开(公告)日：2023-02-16
申请号：US17796420
申请日：2020-06-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B29C64/35 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B29C64/393 , B33Y50/02 , B29C64/165
Abstract: A 3D printing apparatus is disclosed herein. The apparatus comprises a container, a build material extraction module, an energy source and a controller. The container is to receive a build volume comprising portions in which an un-cured thermally curable binder has been applied to define a 3D object to be generated and portions on which no binder has been applied. The build material extraction module is to remove part of the build material on which no binder has been applied. The energy source to heat the contents of the container. And the controller is to control the build material extraction module to remove part of the build material on which no binder has been applied; and control the energy source to heat the build material to thermally cure any binder in the container.
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公开(公告)号：US20220203624A1
公开(公告)日：2022-06-30
申请号：US17604706
申请日：2019-09-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Marc GARCIA GRAU , Marta GONZALEZ MALLO , Jorge DIOSDADO BORREGO
IPC: B29C64/393 , B29C64/245 , B33Y50/02 , B33Y30/00
Abstract: A build platform of an additive manufacturing apparatus is disclosed. The build platform includes a surface formed of a material having a first emissivity; and a plurality of reference markers disposed on the surface. The reference markers have a second emissivity that is different from the first emissivity. A thermal imaging unit calibration method and additive manufacturing apparatus are also disclosed.
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公开(公告)号：US20220371273A1
公开(公告)日：2022-11-24
申请号：US17773839
申请日：2020-01-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： David CHANCLON FERNANDEZ , Jorge DIOSDADO BORREGO , Pablo Antonio MURCIEGO RODRIGUEZ , Berta CARBONELL VILAPLANA , Kai HALSINGER
IPC: B29C64/245 , B33Y30/00 , B33Y40/20 , B29C64/35
Abstract: An additive manufacturing process which comprises carrying out an additive manufacturing build process to create a build cake. The build cake comprises a build object and non-solidified build material and the build object is built in a build location within the build cake. The build cake is supported on a tray which comprises a mesh having openings therethrough. The tray also includes an object region and a restraining feature to restrain a build object within the object region. The process comprises performing a decake operation in which non-solidified build material from the build cake passes through the openings of the mesh and the object moves into contact with the tray in the object region so that the object is restrained within the object region of the tray by the restraining feature.
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Patent Agency Ranking
公开(公告)号：US20220281171A1
公开(公告)日：2022-09-08
申请号：US17637847
申请日：2019-09-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: An example of an apparatus to decake a 3D printed part is disclosed. The apparatus comprises a housing including at least a conduit connectable to a gas source and at least a channel connectable to a vacuum source. The conduit, when in use, is to direct a gas flow to remove un-solidified build material particles from a surface of a 3D printed part. The channel, when in use, is to direct an airflow that generally surrounds the gas flow to extract the removed un-solidified build material particles.
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公开(公告)号：US20240216995A1
公开(公告)日：2024-07-04
申请号：US18558140
申请日：2021-04-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
IPC: B22F10/73 , B33Y40/10 , C04B35/626
CPC classification number: B22F10/73 , B33Y40/10 , C04B35/62645 , B22F2999/00
Abstract: A method in described in which a heated gas is conveyed. A powdered material is introduced to the heated gas at a first location, and powdered material is separated from the heated gas at a second location downstream of the first location. The heated gas causes contaminants in the powdered material to vaporize between the first location and the second location.
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公开(公告)号：US20220350303A1
公开(公告)日：2022-11-03
申请号：US17244685
申请日：2021-04-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jorge DIOSDADO BORREGO , Marc GARCIA GRAU
IPC: G05B19/4099 , B33Y50/00
Abstract: A method is described in which a digital model of a part to be formed within a build bed is received. The model is rotated within a build volume of the build bed such that the projected area of the part in a plane normal to a flow axis is reduced. The flow axis is an axis along which a flow of gas moves through the build bed during a post-print operation, or the flow axis is defined by a type of post-print operation to be performed on the build bed.
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公开(公告)号：US20220288852A1
公开(公告)日：2022-09-15
申请号：US17626766
申请日：2019-09-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jorge DIOSDADO BORREGO , David CHANCLON FERNANDEZ , Pablo Antonio MURCIEGO RODRIGUEZ , Anna SUNOL JIMENEZ
IPC: B29C64/321 , B33Y40/00 , B22F12/50 , B22F12/60 , B22F12/90 , B29C64/393 , B33Y50/02
Abstract: According to one aspect, there is provided an apparatus for loading powder into a powder supply chamber. The apparatus comprises a powder supply module to supply powder to a supply chamber, a set of powder compaction elements and a controller. The controller is to control the powder supply module to supply powder to the supply chamber, control the compaction member to distribute and compact the supplied powder, and control the height of the supply platform and the flow of powder to the supply chamber to load the supply chamber with powder.
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公开(公告)号：US20220072621A1
公开(公告)日：2022-03-10
申请号：US17418627
申请日：2019-07-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: An apparatus comprises a controller to cause an additive manufacturing system to perform a method, the method comprising: controlling the additive manufacturing system to provide a plurality of articles in a multi-layer build arrangement in a build chamber, the multi-layer build arrangement comprising a plurality of article layers, each article layer comprising an article; ejecting a portion of the multi-layer build arrangement from the build chamber; and determining when a divider can be used to divide a first volume of build material of the multi-layer build arrangement from a remaining volume of build material of the multi-layer build arrangement, wherein the first volume comprises an article layer.
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