US 12,186,959 B2
Material delivery device, three-dimensional shaping device, and injection molding device
Hiroki Kobayashi, Hara-Mura (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jun. 23, 2022, as Appl. No. 17/808,328.
Claims priority of application No. 2021-104749 (JP), filed on Jun. 24, 2021.
Prior Publication US 2022/0410456 A1, Dec. 29, 2022
Int. Cl. B29C 45/77 (2006.01); B29C 45/47 (2006.01); B29C 45/74 (2006.01); B29C 64/209 (2017.01); B29C 64/295 (2017.01); B29C 64/393 (2017.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 45/77 (2013.01) [B29C 45/47 (2013.01); B29C 45/74 (2013.01); B29C 64/209 (2017.08); B29C 64/295 (2017.08); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B29C 2945/76006 (2013.01); B29C 2945/7618 (2013.01); B29C 2945/76545 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A material delivery device, comprising:
a plasticization unit including a screw and configured to plasticize a material by rotation of the screw to produce a plasticized material;
a flow path through which the plasticized material flows;
a nozzle having a nozzle opening that communicates with the flow path and delivers the plasticized material to an outside;
an aspirator and discharger coupled between the screw and the nozzle opening in the flow path, and configured to aspirate the plasticized material in the flow path and push the aspirated plasticized material towards the nozzle opening,
a cylinder coupled to the flow path between the aspirator and discharger and the nozzle opening;
a rod inserted into the cylinder; and
a first pressure detector detection unit configured to detect a pressure of the plasticized material in the flow path via the rod, wherein
in a first direction which is a longitudinal direction of the rod, the rod has a rod end surface facing the flow path and a transmitter farther from the flow path than the rod end surface, and transmits a force due to the pressure received at the rod end surface to the first pressure detector via the transmitter.