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.

Inventor： Jorge DIOSDADO BORREGO ,  Sergi CULUBRET CORTADA ,  Sergio PUIGARDUE ARAMENDIA

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.

公开(公告)号：US20220234287A1

公开(公告)日：2022-07-28

申请号：US17627489

申请日：2019-09-26

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sergi CULUBRET CORTADA ,  Sergio PUIGARDEU ARAMENDIA ,  Jason C. HOWER ,  Juan Antonio VICTORIO FERRER ,  Macia SOLE PONS

IPC: B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B29C64/245 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to one example, there is provided a 3D printing build unit comprising a build chamber, a build platform, and a heating element controllable to heat a portion of the contents of the build chamber to a temperature at or above a curing temperature whilst maintaining upper layers of the build chamber at or below a printing temperature.

公开(公告)号：US20230147553A1

公开(公告)日：2023-05-11

申请号：US17794933

申请日：2020-04-30

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Esteve COMAS CESPEDES ,  Michel Georges ENCRENAZ ,  Sergi CULUBRET CORTADA ,  Davinia FONT CALAFELL ,  Luis GARCIA GARCIA

IPC: B22F12/70 ,  B22F10/16 ,  B22F10/322 ,  B22F12/13 ,  B22F12/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/393 ,  B29C64/295 ,  B29C64/364

CPC classification number: B22F12/70 ,  B22F10/16 ,  B22F10/322 ,  B22F12/13 ,  B22F12/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/393 ,  B29C64/295 ,  B29C64/364

Abstract: According to one example, there is provided an apparatus to process volume of particulate build material. The apparatus comprises a sealable chamber to house a volume of particulate build material, a gas supply to supply the chamber with a predetermined gas, a gas circulator to circulate the gas within the volume of build material, a temperature controller to heat the circulated gas to a predetermined heating temperature to heat the volume of build material to the heating temperature and then to cool the circulated gas to a predetermined cooling temperature to cool the volume of build material to the cooling temperature.

公开(公告)号：US20220088867A1

公开(公告)日：2022-03-24

申请号：US17298011

申请日：2019-04-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jordi BLANCH COSTA ,  Daniel GONZALEZ PERELLO ,  Sergi CULUBRET CORTADA ,  Fernando JUAN JOVER ,  Steven J. WHITE ,  Donald HIGGINS

IPC: B29C64/218 ,  B29C64/295 ,  B33Y30/00

Abstract: An additive manufacturing machine (34) comprising a build material spreading system (2). The spreading system (2) has a moveable spreader (4) with an exterior surface (8) to spread build material. The spreading system (2) also has a heater (10) located separate from the spreader (4). The heater (10) has a heat dissipater (20) extending around the spreader (4) to retain, between the dissipater (20) and the spreader (4), air (36) heated by the dissipater (20).

公开(公告)号：US20210370404A1

公开(公告)日：2021-12-02

申请号：US17267387

申请日：2019-01-31

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Sergio PUIGARDEU ARAMENDIA ,  Pol MORRAL MARTI ,  Sergi CULUBRET CORTADA

IPC: B22F10/68 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: According to one aspect, there is provided a method of removing liquid from a build chamber containing build material and liquid. The method comprises starting a liquid extraction process to extract liquid from the build chamber, and determining when a predetermined threshold of liquid has been removed from the build chamber, and thereby stopping the liquid extraction process.