US 11,745,428 B2
Three-dimensional shaping apparatus and three-dimensional shaped article production method comprising a plasticizing section
Akihiko Tsunoya, Okaya (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 24, 2021, as Appl. No. 17/210,863.
Claims priority of application No. 2020-057290 (JP), filed on Mar. 27, 2020.
Prior Publication US 2021/0299959 A1, Sep. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B33Y 50/02 (2015.01); B29C 64/35 (2017.01); B29C 64/209 (2017.01); B33Y 30/00 (2015.01); B29C 64/364 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/35 (2017.08) [B29C 64/209 (2017.08); B29C 64/364 (2017.08); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12)] 10 Claims
OG exemplary drawing
 
1. A three-dimensional shaping apparatus, comprising:
a plasticizing section that forms a plasticized material by plasticizing a material;
a flow channel, through which the plasticized material flows;
a nozzle that communicates with the flow channel and has an ejection port, from which the plasticized material is ejected to a shaping region of a table;
an ejection adjustment mechanism that adjusts an ejection amount of the plasticized material from the ejection port;
a position changing mechanism that changes a relative position of the nozzle to the table;
a pressure measurement section that measures a pressure in the flow channel;
a cleaning mechanism that is provided in a cleaning region different from the shaping region and cleans the nozzle; and
a control unit that controls the ejection adjustment mechanism, and the position changing mechanism and executes a shaping process for shaping a three-dimensional shaped article by stacking layers of the plasticized material at the table, wherein
the control unit
executes a cleaning process for causing the cleaning mechanism to perform cleaning by suspending the shaping process in the middle of the shaping process, and moving the nozzle to the cleaning region, and
resumes the shaping process when the pressure measured by the pressure measurement section is a reference value or less after executing the cleaning process.