US 11,718,006 B2
Material delivery device, three-dimensional shaping device, and injection molding device
Hidenobu Maruyama, Azumino (JP); Daichi Miyashita, Matsumoto (JP); and Yasuyuki Tanaka, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Jul. 20, 2021, as Appl. No. 17/380,151.
Claims priority of application No. 2020-124262 (JP), filed on Jul. 21, 2020.
Prior Publication US 2022/0024097 A1, Jan. 27, 2022
Int. Cl. B29C 45/47 (2006.01); B29C 64/209 (2017.01); B29C 64/295 (2017.01); B29C 45/17 (2006.01); B29C 45/77 (2006.01); B29C 45/74 (2006.01); B33Y 30/00 (2015.01)
CPC B29C 45/47 (2013.01) [B29C 45/1734 (2013.01); B29C 45/74 (2013.01); B29C 45/77 (2013.01); B29C 64/209 (2017.08); B29C 64/295 (2017.08); B29C 2045/1739 (2013.01); B29C 2945/76006 (2013.01); B29C 2945/7621 (2013.01); B33Y 30/00 (2014.12)] 14 Claims
OG exemplary drawing
 
1. A material delivery device, comprising:
a plasticizing unit including a screw and configured to plasticize a material by rotation of the screw to produce a plasticized material;
a nozzle through which the plasticized material is delivered to outside;
a communication flow path provided between the screw and the nozzle and through which the plasticized material flows;
a pressure detection unit including a first cylinder coupled to the communication flow path, a rod inserted into the first cylinder, and a pressure sensor disposed with the rod separated from the communication flow path, in which the rod has a first end surface facing the communication flow path and a second end surface opposite to the first end surface in a longitudinal direction of the rod, and configured to receive a pressure of the plasticized material in the communication flow path at the first end surface and transmit the pressure to the pressure sensor through the second end surface; and
a rotation regulation mechanism having a first engaging portion provided on a side surface of the rod and a second engaging portion to be engaged with the first engaging portion, and configured to regulate rotation of the rod about a central axis along the longitudinal direction of the rod by engaging the first engaging portion with the second engaging portion.