公开(公告)号：US11491723B2

公开(公告)日：2022-11-08

申请号：US16942292

申请日：2020-07-29

Applicant: STRATASYS, INC.

Inventor： Caroline Jo Markman ,  Timothy Hjelsand ,  Kevin C. Johnson

IPC: B29C64/118 ,  B33Y40/00 ,  B65H49/08 ,  B65H55/02 ,  B65H55/04 ,  B65H57/12 ,  B65H57/18 ,  B65D63/10 ,  B29C64/321 ,  B29C64/259 ,  B33Y10/00

Abstract: A consumable assembly for supplying filament to a 3D printer includes a spool-less filament coil, a payout tube, and a compressive band. The coil of filament is wound in a configuration having a generally cylindrical outer perimeter and an open interior; the coil has a payout hole extending from an inner layer of the coil to an outer layer of the coil and includes a filament strand configured to be withdrawn through the payout hole in response to a pull force, to thereby withdraw filament from the interior of the coil. The payout tube is disposed in the payout hole and provides a filament port. A compressive band is disposed over the outer layer and is configured to exert a compressive radial force on the coil so that the coil maintains its cylindrical shape without deformation, and the filament strand may be drawn through the filament outlet free of kinks, twists or tangles.

公开(公告)号：US20210039317A1

公开(公告)日：2021-02-11

申请号：US16942292

申请日：2020-07-29

Applicant: STRATASYS, INC.

Inventor： Caroline Jo Markman ,  Timothy Hjelsand ,  Kevin C. Johnson

IPC: B29C64/321 ,  B29C64/118 ,  B33Y10/00 ,  B33Y40/00 ,  B29C64/259

Abstract: A consumable assembly for supplying filament to a 3D printer includes a spool-less filament coil, a payout tube, and a compressive band. The coil of filament is wound in a configuration having a generally cylindrical outer perimeter and an open interior; the coil has a payout hole extending from an inner layer of the coil to an outer layer of the coil and includes a filament strand configured to be withdrawn through the payout hole in response to a pull force, to thereby withdraw filament from the interior of the coil. The payout tube is disposed in the payout hole and provides a filament port. A compressive band is disposed over the outer layer and is configured to exert a compressive radial force on the coil so that the coil maintains its cylindrical shape without deformation, and the filament strand may be drawn through the filament outlet free of kinks, twists or tangles.

公开(公告)号：US10513103B2

公开(公告)日：2019-12-24

申请号：US15327856

申请日：2015-07-21

Applicant: Stratasys, Inc.

Inventor： Paul J. Leavitt ,  Andrew Rice ,  Timothy Hjelsand

IPC: B01D45/12 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B29C64/106 ,  B29C64/386 ,  B29C48/92 ,  B29C48/02 ,  B29C48/05 ,  B29C48/255 ,  B29C48/25 ,  B29C48/37 ,  B29K105/00 ,  B29C48/285

Abstract: An assembly for use in an additive manufacturing system to print a three-dimensional part that includes an extruder comprising a gear and a motor that turns the gear, wherein rotation of the gear regulates a flow of material out of the extruder. A controller, provides a control signal to the motor to control the rate at which the motor turns the at least one gear and incorporates a time-varying signal into the control signal to reduce ripples in the material output by the extruder.