US 12,485,616 B2
Three-dimensional shaping device and three-dimensional shaped object manufacturing method
Masaaki Ogihara, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jun. 13, 2023, as Appl. No. 18/333,817.
Claims priority of application No. 2022-095489 (JP), filed on Jun. 14, 2022.
Prior Publication US 2023/0405934 A1, Dec. 21, 2023
Int. Cl. B29C 64/343 (2017.01); B29C 64/209 (2017.01); B29C 64/321 (2017.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01); B33Y 30/00 (2015.01)
CPC B29C 64/343 (2017.08) [B29C 64/209 (2017.08); B29C 64/321 (2017.08); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 7 Claims
OG exemplary drawing
 
1. A three-dimensional shaping device, comprising:
a nozzle having a nozzle opening and configured to discharge a shaping material from the nozzle opening toward a stage;
a first motor configured to change a relative position between the nozzle and the stage;
a discharge amount adjusting valve provided in a flow path which is in communication with the nozzle opening and through which the shaping material flows, and configured to adjust a discharge amount of the shaping material from the nozzle opening by changing an opening area of the flow path;
a pressure adjusting assembly including a branch flow path coupled to the flow path between the discharge amount adjusting valve and the nozzle opening, a plunger, and a second motor configured to move the plunger in the branch flow path, the plunger being movable in a movable range in the branch flow path;
a memory configured to store a program; and
a processor configured to execute the program so as to:
execute an absorption operation of absorbing the shaping material in the flow path into the branch flow path and a delivery operation of delivering the shaping material absorbed into the branch flow path to the flow path, by moving the plunger when shaping one partial shaped object having a continuous linear shape along a shaping section for shaping the one partial shaped object and by controlling the first motor, the discharge amount adjusting valve, and the second motor;
move the plunger to a reference position by controlling the second motor, the reference position being an intermediate position in the movable range of the plunger;
cause the nozzle to start shaping of the one partial shaped object having the continuous linear shape after the processor sets the plunger at the reference position; and
cause the nozzle to end the shaping of the one partial shaped object having the continuous linear shape such that the plunger stops at the reference position in the branch flow path.