公开(公告)号：US20210197459A1

公开(公告)日：2021-07-01

申请号：US16077755

申请日：2017-04-14

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

Inventor： Eric COLLINS ,  Kurt F. OLSEN

IPC: B29C64/232 ,  B29C64/209 ,  B29C64/236 ,  B33Y30/00 ,  B33Y50/02

Abstract: Examples disclosed herein relate to printhead indexing. An example method can include rotating a crank arm connected to a coupling bar. The method can include moving a print sled translationally by the coupling bar, where the print sled may be located in X, Z, and Y orthogonal dimensions. In this example, the print sled may be translationally moved to one of a number of index positions by the coupling bar in response to rotation of the crank arm, where the number of index positions are separately located in a Y dimension with the same Z dimension.

公开(公告)号：US20210206109A1

公开(公告)日：2021-07-08

申请号：US16075437

申请日：2017-04-17

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

Inventor： Michael EWE ,  Eric COLLINS ,  Wesley R. SCHALK

IPC: B29C64/393 ,  B29C64/245 ,  B29C64/232 ,  B33Y30/00 ,  B33Y50/02

Abstract: A 3D printer includes a movable platform, a motor to vertically translate the movable platform during an additive manufacturing process executed by the 3D printer to form a product on the movable platform, a linear encoder strip attached to the movable platform and a linear encoder reader disposed to read the linear encoder strip as the linear encoder strip moves relative to the linear encoder reader. A control circuit is to drive the motor based on an output of the linear encoder reader.

公开(公告)号：US20210197481A1

公开(公告)日：2021-07-01

申请号：US16074974

申请日：2017-04-21

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

Inventor： Brent EWALD ,  Michael EWE ,  Eric COLLINS ,  Wesley R. SCHALK

IPC: B29C64/393 ,  B29C64/218 ,  B29C64/232 ,  B29C64/236 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: Example systems relate to recoater movement. A non-transitory machine readable medium may contain instructions executable by a processor. The instructions may include instructions to change an action of a recoater in response to a determination that the recoater has reached a first location of a build area comprising build material. Instructions may further include instructions to lift the recoater in response to a determination that the recoater has reached a second location of the build area. Instructions may additionally include instructions to move the recoater over the second location at the lifted position, wherein the second location includes a build-up of the build material.

公开(公告)号：US20210206111A1

公开(公告)日：2021-07-08

申请号：US16075498

申请日：2017-04-21

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

Inventor： Michael EWE ,  Eric COLLINS ,  Donnell D. DANIELS

IPC: B29C64/393 ,  B29C64/236 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/205

Abstract: An example three-dimensional printing system includes a first carriage, a second carriage, and a synchronization controller, The synchronization controller is coupled to the first carriage and the second carriage to synchronize movements of the first carriage and the second carriage. The synchronization controller is to avoid interference between the first carriage and the second carriage.

公开(公告)号：US20210197452A1

公开(公告)日：2021-07-01

申请号：US16075644

申请日：2017-04-21

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

Inventor： Brent EWALD ,  Eric COLLINS

IPC: B29C64/165 ,  B29C64/236 ,  B29C64/218 ,  B29C64/232 ,  B29C64/282 ,  B29C64/209 ,  B29C64/245

Abstract: Some examples include a fusing system for an additive manufacturing machine including a carriage movable across a build zone along the x-axis, a thermic source mounted to the carriage, and a roller mounted to the carriage adjacent to the thermic source. A longitudinal section of an exterior surface of the roller is exposed to indirect heat from the thermic source. The roller is controlled to rotate during and outside of a spreading operation of the build material. The carriage is to maintain the roller within a radiative heat transfer area of the thermic source.