公开(公告)号：US20190099954A1

公开(公告)日：2019-04-04

申请号：US16085492

申请日：2016-03-18

申请人： Xavier Vilajosana ,  Sebastia Cortes ,  Pablo Dominguez ,  Diego Javier Mostaccio ,  Alejandro Manuel de Pena ,  HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Xavier Vilajosana ,  Sebastia Cortes ,  Pablo Dominguez ,  Diego Javier Mostaccio ,  Alejandro Manuel de Pena

IPC分类号： B29C64/393 ,  B29C64/165

摘要： Measures for use in an additive manufacturing system. A thermal camera measures temperatures of a printbed area of the system at a first time and a second, subsequent time during additive manufacture of an object in the printbed area. A controller receives, from the thermal camera, temperature information associated with the measured temperatures at the first time and the second time and processes the received temperature information to determine a first position of a moving part of the system at the first time and a second position of the moving part at the second time. In response to the processing indicating that the moving part has not moved by a sufficient amount between the first time and the second time, the controller determines that the moving part is operating abnormally.

公开(公告)号：US10960606B2

公开(公告)日：2021-03-30

申请号：US16097266

申请日：2016-07-22

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Anna Tarradas ,  Xavier Vilajosana ,  Diego Javier Mostaccio

IPC分类号： B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/295 ,  B29C35/02 ,  B22F3/00 ,  B28B1/00 ,  B28B17/00

摘要： According to some examples, a method comprises measuring, using a detector, a temperature of at least a portion of a layer of build material formed on a print bed associated with an additive manufacturing apparatus. The additive manufacturing apparatus may include a heating module to direct heat towards successive layers of build material during a series of successive passes over the build material. The method may further comprise determining, using a processor, based at least in part on the measured temperature, a duration that the heating module is to wait before performing a pass over the build material, and a speed at which the heating module is to travel over the build material.

公开(公告)号：US10539474B2

公开(公告)日：2020-01-21

申请号：US15562786

申请日：2015-07-21

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Xavier Vilajosana ,  Pere Tuset ,  Diego Javier Mostaccio

IPC分类号： G01K13/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/153

摘要： In some examples, a method comprises sensing a temperature of a plurality of sub-regions of a portion of a layer of build material in an object generation apparatus. A frequency distribution of sub-region temperatures may be derived therefrom and it may be determined whether the frequency distribution is bimodal. If the frequency distribution is not bimodal, a build material temperature zone is identified. If however the frequency distribution is bimodal, a fusing build material temperature zone and a non-fusing build material temperature zone are identified. The method may further comprise determining a nominal temperature of the at least one identified temperature zone.

公开(公告)号：US20180052064A1

公开(公告)日：2018-02-22

申请号：US15562786

申请日：2015-07-21

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Xavier Vilajosana ,  Pere Tuset ,  Diego Javier Mostaccio

IPC分类号： G01K13/10 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y30/00

CPC分类号： G01K13/10 ,  B29C64/153 ,  B29C64/165 ,  B29C64/386 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

摘要： In some examples, a method comprises sensing a temperature of a plurality of sub-regions of a portion of a layer of build material in an object generation apparatus. A frequency distribution of sub-region temperatures may be derived therefrom and it may be determined whether the frequency distribution is bimodal. If the frequency distribution is not bimodal, a build material temperature zone is identified. If however the frequency distribution is bimodal, a fusing build material temperature zone and a non-fusing build material temperature zone are identified. The method may further comprise determining a nominal temperature of the at least one identified temperature zone.

公开(公告)号：US20190152146A1

公开(公告)日：2019-05-23

申请号：US16096230

申请日：2016-07-22

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Adrien Chiron ,  Esteve Comas ,  Diego Javier Mostaccio

IPC分类号： B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/141 ,  B29C64/321 ,  B33Y40/00

摘要： According to one example there is provided a method for three-dimensional printing. The method comprises forming a pile of build material on a heatable plate adjacent a spreader, heating the pile of build material by contact with the heatable plate, and spreading the heated pile of build material on a support platform.

公开(公告)号：US20190111630A1

公开(公告)日：2019-04-18

申请号：US16097266

申请日：2016-07-22

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Anna Tarradas ,  Xavier Vilajosana ,  Diego Javier Mostaccio

IPC分类号： B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/295 ,  B28B1/00 ,  B28B17/00 ,  B22F3/00

摘要： According to some examples, a method comprises measuring, using a detector, a temperature of at least a portion of a layer of build material formed on a print bed associated with an additive manufacturing apparatus. The additive manufacturing apparatus may include a heating module to direct heat towards successive layers of build material during a series of successive passes over the build material. The method may further comprise determining, using a processor, based at least in part on the measured temperature, a duration that the heating module is to wait before performing a pass over the build material, and a speed at which the heating module is to travel over the build material.