公开(公告)号：US20220219397A1

公开(公告)日：2022-07-14

申请号：US17595204

申请日：2019-09-30

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

Inventor： Jorge Diosdado Borrego ,  Berta Carbonell Vilaplana ,  Rhys Mansell

IPC: B29C64/35 ,  B08B5/02 ,  B08B5/04 ,  B08B13/00 ,  B08B15/04 ,  B33Y40/20 ,  B22F10/68 ,  B22F10/30

Abstract: According to one aspect, there is provided a method of cleaning a 3D object on a platform. The method comprises generating with a cleaning module a cleaning airflow to remove powder particles from a 3D object and an extraction airflow to extract any removed powder particles, determining a quantity of powder particles in the extraction airflow, and moving the cleaning module relative to the platform based on the determined quantity of powder particles.

公开(公告)号：US20210229180A1

公开(公告)日：2021-07-29

申请号：US17050614

申请日：2018-10-16

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

Inventor： Mohammad Jowkar ,  Rhys Mansell ,  Vicente Granados Asensio

IPC: B22F10/14 ,  B22F12/53 ,  B22F12/30 ,  B33Y30/00 ,  B22F1/00 ,  B33Y50/02 ,  B22F12/55 ,  B22F12/00 ,  B33Y10/00 ,  B22F10/85

Abstract: In an example, a method comprises controlling material dispensing by a material dispensing apparatus to output a layer of material onto a build platform. The material dispensing apparatus comprises a plurality of pairs of material containers, each pair of material containers movable along a path across the build platform, and comprising a first material container to dispense a first material and a second material container to dispense a second material, to output a band of material along the path, each pair of material containers being arranged with respect to each other pair of material containers to move along respective paths across the build platform to output respective bands of material forming a complete layer of material on the build platform. The controlling comprises controlling each pair of material containers to move along its respective path and deposit, selectively, first material, along one or more regions of the respective band along the respective path that coincide with a portion of a part to be printed, and deposit, selectively, second material, along other regions of the respective band along the respective path.