公开(公告)号：US20210178679A1

公开(公告)日：2021-06-17

申请号：US17186225

申请日：2021-02-26

Applicant: Xerox Corporation

Inventor： Christopher G. Lynn ,  Peter J. Nystrom ,  David A. Mantell

IPC: B29C64/209 ,  B33Y30/00 ,  B29C48/21 ,  B29C48/25 ,  B29C48/50 ,  B29C48/255 ,  B29C48/345

Abstract: An extruder has a valve assembly configured to move pins to open and close the nozzles in a multi-nozzle extruder head independently. The pins of the valve assembly that are driven by actuators into and out of engagement with nozzles in the extruder head are positioned within sleeves that extend between the valve assembly and the extruder head. A gap is provided between the extruder head and the end of the sleeves proximate the extruder head to enable thermoplastic material leaking from the extruder that contacts the pins to remain in a melted or plastic state so the thermoplastic material does not interfere with the movement of the pins.

公开(公告)号：US11000997B2

公开(公告)日：2021-05-11

申请号：US16042125

申请日：2018-07-23

Applicant: Xerox Corporation

Inventor： Christopher G. Lynn ,  Peter J. Nystrom ,  David A. Mantell

IPC: B29C64/209 ,  B33Y30/00 ,  B29C48/25 ,  B29C48/255 ,  B29C48/345 ,  B29C48/21 ,  B29C48/50 ,  B29K101/12

Abstract: An extruder has a valve assembly configured to move pins to open and close the nozzles in a multi-nozzle extruder head independently. The pins of the valve assembly that are driven by actuators into and out of engagement with nozzles in the extruder head are positioned within sleeves that extend between the valve assembly and the extruder head. A gap is provided between the extruder head and the end of the sleeves proximate the extruder head to enable thermoplastic material leaking from the extruder that contacts the pins to remain in a melted or plastic state so the thermoplastic material does not interfere with the movement of the pins.

公开(公告)号：US10906224B2

公开(公告)日：2021-02-02

申请号：US16812846

申请日：2020-03-09

Applicant: Xerox Corporation

Inventor： Barry P. Mandel ,  Peter J. Nystrom ,  Christopher G. Lynn ,  Robert A. Clark ,  David A. Mantell

IPC: B29C48/255 ,  B29C48/92 ,  B29C64/209 ,  B29C64/343 ,  B29C64/321 ,  B29C64/118 ,  B29C64/241 ,  B29C64/295 ,  B29C48/25 ,  B29C48/80 ,  B29C64/386 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00 ,  B29K101/12

Abstract: A method of operating an additive manufacturing system feeds solid extrusion material into a heater using a slip clutch coupled to an actuator of a mechanical driver to supply thermoplastic material into a manifold in an extruder head. The method sets a speed of the actuator so the actuator operates at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This method helps maintain the pressure of the thermoplastic material in the manifold of the extruder head in a predetermined range no matter how many nozzles are opened in the extruder head.

公开(公告)号：US10894358B2

公开(公告)日：2021-01-19

申请号：US16129943

申请日：2018-09-13

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Stuart A. Schweid ,  Christopher G. Lynn ,  Peter J. Nystrom

IPC: B29C64/209 ,  B33Y30/00 ,  B29C64/336 ,  B29C64/295 ,  B29C48/25 ,  B33Y50/02 ,  B33Y40/00

Abstract: An extruder head has an arrangement of multiple nozzles in the faceplate that avoids aligning the multiple nozzles at angular orientations from the 0°-180° axis and 90°-270° axis intersection at the center of the faceplate. The extruder head includes a housing having a faceplate with a plurality of nozzles that are equally spaced from one another when the nozzles are projected onto a first axis in a plane of the faceplate and the nozzles are equally spaced from one another when projected onto a second axis in the plane of the faceplate that is orthogonal to the first axis. Movement of the extruder head along any angular path from the intersection of the first axis and the second axis in the plane of the faceplate enables at least one nozzle in the plurality of nozzles to not be aligned with any other nozzle.

公开(公告)号：US20200230660A1

公开(公告)日：2020-07-23

申请号：US16252507

申请日：2019-01-18

Applicant: Xerox Corporation

Inventor： Peter J. Nystrom ,  Christopher Mieney ,  David VanKouwenberg ,  Mark A. Cellura

IPC: B08B3/04 ,  B08B1/00 ,  B08B1/04 ,  B08B1/02 ,  B08B5/04 ,  B41J29/17

Abstract: A system, method and apparatus for in-situ cleaning comprises a shower configured to dispense cleaning solution on a belt in a rendering device a dryer configured down line from the shower; a cleaning roller configured to engage a transport roller associated with the belt and a control system for controlling operations thereof.

公开(公告)号：US20200207000A1

公开(公告)日：2020-07-02

申请号：US16812846

申请日：2020-03-09

Applicant: Xerox Corporation

Inventor： Barry P. Mandel ,  Peter J. Nystrom ,  Christopher G. Lynn ,  Robert A. Clark ,  David A. Mantell

IPC: B29C48/255 ,  B29C48/80 ,  B29C48/25 ,  B29C64/209 ,  B29C48/92 ,  B29C64/106 ,  B29C64/386 ,  B29C64/295 ,  B29C64/241 ,  B29C64/118 ,  B29C64/321 ,  B29C64/343

Abstract: A method of operating an additive manufacturing system feeds solid extrusion material into a heater using a slip clutch coupled to an actuator of a mechanical driver to supply thermoplastic material into a manifold in an extruder head. The method sets a speed of the actuator so the actuator operates at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This method helps maintain the pressure of the thermoplastic material in the manifold of the extruder head in a predetermined range no matter how many nozzles are opened in the extruder head.

公开(公告)号：US10596798B2

公开(公告)日：2020-03-24

申请号：US15350200

申请日：2016-11-14

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom

IPC: B29C67/00 ,  B29C47/30 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C48/30 ,  B29C48/345 ,  B29C64/118 ,  B29C64/209 ,  B29C64/336 ,  B29C64/20 ,  B29C64/386 ,  B29C64/106 ,  B29K105/00

Abstract: An additive manufacturing system has a plurality of manifolds in an extruder. Each manifold is connected to at least one nozzle of the extruder to enable the at least one nozzle to extrude thermoplastic material through a corresponding aperture in a faceplate mounted to the extruder. A plurality of valves is configured between each manifold and each nozzle connected to the manifold to enable the nozzles connected to a manifold to extrude thermoplastic material from the manifold selectively. The faceplate is also configured for rotation about an axis perpendicular to the faceplate to enable different orientations of the nozzles in the apertures of the faceplate. The different manifolds of the extruder enable a plurality of thermoplastic materials having a different property to be extruded simultaneously so the materials can join to one another while the materials are at an elevated temperature.

公开(公告)号：US10456968B2

公开(公告)日：2019-10-29

申请号：US14962126

申请日：2015-12-08

Applicant: Xerox Corporation

Inventor： Barry P. Mandel ,  David A. Mantell ,  Peter J. Nystrom

IPC: B29C64/118 ,  B29C64/209 ,  B29C64/321 ,  B29C64/336 ,  B29C64/343 ,  B29C48/21 ,  B33Y30/00 ,  B29K55/02 ,  B29L9/00 ,  B33Y40/00 ,  B29C48/30 ,  B29C48/02 ,  B29C48/05 ,  B29C48/17 ,  B29C48/25 ,  B29C48/285 ,  B29C48/345

Abstract: A three-dimensional object printer includes a multi-nozzle extruder, at least one extrusion material supply, and a dispenser that provides extrusion material from the extrusion material supply to each of a plurality of channels, each channel supplying extrusion material to at least one nozzle in the multi nozzle extruder. The dispenser includes an inlet to receive extrusion material from at least one extrusion material supply, an outlet configured to direct the extrusion material to a channel in the plurality of channels, and an actuator configured to move the outlet into alignment with each channel in the plurality of channels.

公开(公告)号：US10421266B2

公开(公告)日：2019-09-24

申请号：US15334779

申请日：2016-10-26

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  Peter J. Nystrom ,  Christopher G. Lynn

IPC: B33Y30/00 ,  B29C48/87 ,  B29C48/25 ,  B29C48/80 ,  B29C64/106 ,  B29C48/92 ,  B29C64/209 ,  B29C64/295 ,  B33Y10/00 ,  B29K101/12 ,  B29C64/386

Abstract: An apparatus changes the temperature of thermoplastic material in an extruder head to reduce the time for producing an object. The apparatus includes a cooling device located near the one or more nozzles of the extruder head to change the temperature of the thermoplastic material extruded by the extruder head. The apparatus cools the thermoplastic material to enhance the formation of exterior object features. A heater can also be positioned near the nozzle zone to heat the thermoplastic material to reduce the time for raising the viscosity of the thermoplastic material for forming interior regions of the object.

公开(公告)号：US10166777B2

公开(公告)日：2019-01-01

申请号：US15134949

申请日：2016-04-21

Applicant: XEROX CORPORATION

Inventor： Gary D. Redding ,  Peter J. Nystrom ,  Peter M. Gulvin ,  Mark A. Cellura

IPC: B41J2/16 ,  B41J2/14 ,  C09D11/52 ,  C09D11/30 ,  C09D11/36

Abstract: A method for forming piezoelectric transducers for inkjet printheads includes: forming at least one piezoelectric layer on a substrate; forming at least one electrode pattern by depositing a conductive material on an exposed surface of the at least one piezoelectric layer; and forming a plurality of individual piezoelectric elements from the at least one piezoelectric layer before or after the forming of the at least one electrode pattern.