公开(公告)号：US11485079B2

公开(公告)日：2022-11-01

申请号：US17131332

申请日：2020-12-22

Applicant: Stratasys, Inc.

Inventor： Josh Durand ,  Jeff Lee Chapman

IPC: B29C64/232 ,  B29C64/209 ,  B29C64/245 ,  B29C64/25 ,  B29C64/393 ,  B29C64/236 ,  B33Y50/02 ,  B33Y30/00

Abstract: A z-lift and leveling assembly for leveling a platen in a heated chamber of a 3D printer includes first, second, third, and fourth z-actuators in a rectangular configuration. Each z-actuator includes a linear drive configured to supply motion in the z-direction and a mounting bracket secured to the linear drive and configured to move with the linear drive in the z-direction. The assembly includes a set of four pin couplings each associated with one of the first, second, third and fourth z-actuators. Each pin coupling includes a pivot block secured to the mounting bracket with a first pivot pin forming a first pin joint between the mounting bracket and the pivot block, where the pivot block is configured to move relative to the mounting bracket about a first pivot axis of the first pivot pin. The pivot block is secured to the platen or an arm of the platen with a second pivot pin forming a second pin joint such that the pivot block and the platen move relative to each other about a second pivot axis. As the mounting bracket is moved, the pivot block moves relative to the mounting bracket about the first pivot axis and the pivot block moves relative to the platen about the second pivot axis such that a z-position of the platen can be manipulated to and maintained in a substantially level configuration in the z-direction though the independent manipulation of the first, second, third and fourth z-actuators and wherein the substantially level configuration can be maintained when the platen is incremented in the z-direction during printing of a part.

公开(公告)号：US20220193996A1

公开(公告)日：2022-06-23

申请号：US17131332

申请日：2020-12-22

Applicant: Stratasys, Inc.

Inventor： Josh Durand ,  Jeff Lee Chapman

IPC: B29C64/232 ,  B29C64/209 ,  B29C64/245 ,  B29C64/236 ,  B29C64/25 ,  B29C64/393

Abstract: A z-lift and leveling assembly for leveling a platen in a heated chamber of a 3D printer includes first, second, third, and fourth z-actuators in a rectangular configuration. Each z-actuator includes a linear drive configured to supply motion in the z-direction and a mounting bracket secured to the linear drive and configured to move with the linear drive in the z-direction. The assembly includes a set of four pin couplings each associated with one of the first, second, third and fourth z-actuators. Each pin coupling includes a pivot block secured to the mounting bracket with a first pivot pin forming a first pin joint between the mounting bracket and the pivot block, where the pivot block is configured to move relative to the mounting bracket about a first pivot axis of the first pivot pin. The pivot block is secured to the platen or an arm of the platen with a second pivot pin forming a second pin joint such that the pivot block and the platen move relative to each other about a second pivot axis. As the mounting bracket is moved, the pivot block moves relative to the mounting bracket about the first pivot axis and the pivot block moves relative to the platen about the second pivot axis such that a z-position of the platen can be manipulated to and maintained in a substantially level configuration in the z-direction though the independent manipulation of the first, second, third and fourth z-actuators and wherein the substantially level configuration can be maintained when the platen is incremented in the z-direction during printing of a part.

公开(公告)号：US11904542B2

公开(公告)日：2024-02-20

申请号：US17112534

申请日：2020-12-04

Applicant: Stratasys, Inc.

Inventor： Jeff Lee Chapman ,  Robert Skubic ,  Bryan Migliori ,  Benjamin L Braton ,  Patrick W. Anderson ,  Josh Durand ,  Colin Schiel

IPC: B29C64/245 ,  B29C64/232 ,  B33Y30/00 ,  B29C64/118

CPC classification number: B29C64/245 ,  B29C64/118 ,  B29C64/232 ,  B33Y30/00

Abstract: A platen assembly for use with an extrusion-based 3D printer includes a grid assembly comprising at least a 4×2 framework of interlocked perpendicular x direction beams and y direction beams, providing a substantially planar upper surface and a bottom surface. The platen assembly includes a platen comprising a thin metal sheet supported on the upper surface of the grid assembly and secured to the grid assembly such that the top surface provides a substantially flat build surface. The x direction beams, the y direction beams and the platen are constructed of substantially a same thermal expansion properties, and wherein the build surface of the platen has a build surface area of at least 400 square inches and maintains its flatness to within a flatness tolerance of 0.020 inches over a temperature range of at least 20 C-300 C.

公开(公告)号：US20220001613A1

公开(公告)日：2022-01-06

申请号：US17112534

申请日：2020-12-04

Applicant: Stratasys, Inc.

Inventor： Jeff Lee Chapman ,  Robert Skubic ,  Bryan Migliori ,  Benjamin L. Braton ,  Patrick W. Anderson ,  Josh Durand ,  Colin Schiel

IPC: B29C64/245 ,  B29C64/118 ,  B29C64/232

Abstract: A platen assembly for use with an extrusion-based 3D printer includes a grid assembly comprising at least a 4×2 framework of interlocked perpendicular x direction beams and y direction beams, providing a substantially planar upper surface and a bottom surface. The platen assembly includes a platen comprising a thin metal sheet supported on the upper surface of the grid assembly and secured to the grid assembly such that the top surface provides a substantially flat build surface. The x direction beams, the y direction beams and the platen are constructed of substantially a same thermal expansion properties, and wherein the build surface of the platen has a build surface area of at least 400 square inches and maintains its flatness to within a flatness tolerance of 0.020 inches over a temperature range of at least 20 C-300 C.

公开(公告)号：USD1068872S1

公开(公告)日：2025-04-01

申请号：US29845433

申请日：2022-07-07

Applicant: Stratasys, Inc.

Designer： Jeff Lee Chapman ,  James Flannigan ,  Patrick Anderson ,  Dang Yang ,  Christopher Herbst ,  Brett Johnson ,  Colin Schiel

公开(公告)号：US20240359404A1

公开(公告)日：2024-10-31

申请号：US18646331

申请日：2024-04-25

Applicant: Stratasys, Inc.

Inventor： Ross Michalkiewicz ,  Dang Yang ,  Colin Schiel ,  Jeff Lee Chapman

IPC: B29C64/209 ,  B29C64/25 ,  B33Y30/00

CPC classification number: B29C64/209 ,  B29C64/25 ,  B33Y30/00

Abstract: An extrusion-based 3D printer configured to print 3D parts in a layer-by-layer manner includes a platen configured to accept and support extruded material, at least one print head configured to extrude material to print a 3D part and a gantry configured to move the at least one print head as the material is extruded. The 3D printer includes at least one head carriage configured to engage the at least one print head. The at least one carriage is configured to engage and retain the at least one print head, where a filament cutter positioned above the at least one print head. The filament cutter includes a blade configured to be moved by the user, such that the blade is positionable between a non-cutting position where filament can be fed to the at least one print head and a cutting position wherein the filament is cut above the print head.