公开(公告)号：WO2018182599A1

公开(公告)日：2018-10-04

申请号：PCT/US2017/024815

申请日：2017-03-29

Applicant: HEWLETT PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： YUSEF, Haseeb ,  JUAN, Fernando ,  WHITEFIELD, Corwin David ,  DRIGGERS, Matt Gordon ,  MOSQUERA DOÑATE, Gerard

IPC: B29C64/314 ,  B33Y40/00

CPC classification number: B29C64/314 ,  B33Y40/00

Abstract: In one example, a build material preparation subsystem. The subsystem includes a trough to house build material deliverable to a build bed and usable to form a layer of an object fabricated by additive manufacturing. An agitating tray is slidably disposed in the trough. A linear actuator is disposed adjacent an outside wall of the trough. A drive arm has a first end portion fixedly coupled to the agitating tray and a second end portion coupled to the linear actuator. The drive arm passes over a wall of the trough.

公开(公告)号：WO2021194479A1

公开(公告)日：2021-09-30

申请号：PCT/US2020/024500

申请日：2020-03-24

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

Inventor： ENGEL, John Bradford ,  WHITEFIELD, Corwin David ,  ROMAN, Justin Michael

IPC: B29C64/379 ,  B33Y40/20

Abstract: An example processing system for processing a part includes: a processing chamber to hold the part to be processed; a plurality of supply reservoir to contain respective processing fluids; an injection system fluidly coupled to the plurality of supply reservoirs; and a controller operatively coupled to the injection system, the controller to: based on the part to be processed, select a processing sequence for processing the part; and control the injection system to execute the selected processing sequence; wherein the processing sequence is selected from: (i) injecting, sequentially, a first volume of a first processing fluid and a second volume of a second processing fluid; and (ii) combining a third volume of a third processing fluid and a fourth volume of a fourth processing fluid to form a combined processing fluid and injecting the combined processing fluid into the processing chamber.