公开(公告)号：US20170203506A1

公开(公告)日：2017-07-20

申请号：US15327855

申请日：2015-07-21

Applicant: Stratasys, Inc.

Inventor： Timothy A. Hjelsand ,  Dana R. Hansen ,  James W. Comb ,  Jonathan B. Hedlund

IPC: B29C67/00 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B33Y10/00 ,  B29C48/02 ,  B29C48/05 ,  B29C48/2552 ,  B29C48/266 ,  B29C48/2886 ,  B29C48/37 ,  B29C48/92 ,  B29C64/106 ,  B29C64/386 ,  B29C2948/92095 ,  B29C2948/92104 ,  B29C2948/9239 ,  B29C2948/92457 ,  B29C2948/926 ,  B29C2948/92952 ,  B29K2105/0067 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: A liquefier assembly for use in an additive manufacturing system to print three-dimensional parts, which includes an upstream pressure-generating stage and downstream flow-regulating stage. The upstream pressure-generating stage includes a drive mechanism, a liquefier configured to melt a consumable material receive from the drive mechanism to produce a molten material in a pressurized state. The downstream flow-regulating stage includes a gear assembly having a casing assembly and a pair of gears disposed within the interior cavity and engaged with each other to regulate a flow of the pressurized molten material through the gear assembly for controlled extrusion.

公开(公告)号：US20190315114A1

公开(公告)日：2019-10-17

申请号：US16451981

申请日：2019-06-25

Applicant: Stratasys, Inc.

Inventor： Timothy A. Hjelsand ,  Dana R. Hansen ,  James W. Comb ,  Jonathan B. Hedlund

IPC: B33Y10/00 ,  B29C48/05 ,  B33Y40/00 ,  B33Y50/02 ,  B29C64/106 ,  B29C64/386 ,  B29C48/92 ,  B29C48/02 ,  B33Y30/00 ,  B29C48/37 ,  B29C48/25 ,  B29C48/255

Abstract: A liquefier assembly (20) for use in an additive manufacturing system (10) to print three-dimensional parts (22), which includes an upstream pressure-generating stage (52) and downstream flow-regulating stage (52). The upstream pressure-generating stage (52) includes a drive mechanism (46), a liquefier configured (52) to melt a consumable material (48) receive from the drive mechanism (46) to produce a molten material in a pressurized state. The downstream flow-regulating stage (52) includes a gear assembly (52) having a casing assembly (64,66,68) and a pair of gears (74,76) disposed within the interior cavity (78,80) and engaged with each other to regulate a flow of the pressurized molten material (48) through the gear assembly (52) for controlled extrusion.