US 11,697,159 B2
Three-dimensional shaping device and method for manufacturing three-dimensional shaped object
Hiroki Kobayashi, Hara-Mura (JP); Kazuhide Nakamura, Asahi (JP); and Koichi Saito, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Nov. 25, 2020, as Appl. No. 17/104,073.
Claims priority of application No. 2019-214120 (JP), filed on Nov. 27, 2019.
Prior Publication US 2021/0154941 A1, May 27, 2021
Int. Cl. B29C 64/393 (2017.01); B33Y 50/02 (2015.01); B29C 64/209 (2017.01); B22F 12/53 (2021.01); B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B22F 10/00 (2021.01); B22F 12/52 (2021.01); B22F 12/57 (2021.01); B22F 12/90 (2021.01); B22F 10/18 (2021.01); B22F 10/22 (2021.01)
CPC B22F 12/53 (2021.01) [B22F 10/00 (2021.01); B22F 12/52 (2021.01); B22F 12/57 (2021.01); B22F 12/90 (2021.01); B29C 64/118 (2017.08); B29C 64/209 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 10/18 (2021.01); B22F 10/22 (2021.01)] 4 Claims
OG exemplary drawing
 
1. A three-dimensional shaping device comprising:
a discharge head configured to discharge a shaping material to a shaping region on a stage to form a layer and discharge the shaping material into a box to clean the discharge head as a cleaning process, the stage and the box being configured to move independently;
a line width measuring device attached to the discharge head, the line width measuring device being configured to measure a line width of the layer, the line width measuring device including a laser scanner scanning with a laser beam across the layer or a camera capturing an image of the layer;
a weight measuring device configured to measure a weight of the shaping material on the shaping region on the stage discharged from the discharge head, the weight measuring device being disposed directly under the stage, the weight measuring device being configured with:
a support; and
a weight sensor stacked on the support, the stage and the box being stacked on the weight sensor;
a memory configured to store a program; and
a processor configured to execute the program so as to:
read shaping data generated from shape source data, the shape source data representing a shape of a three-dimensional shaped object;
cause the discharge head to discharge the shaping material to form the three-dimensional shaped object by executing the shaping data;
cause the weight measuring device to measure the weight of a first part on the shaping region, the first part being formed by executing at least a part of the shaping data;
calculate a first weight from the shape source data or the shaping data corresponding to the first part;
compare between the weight of the first part measured by the weight measuring device and the calculated first weight to generate a comparison result,
determine whether one layer of the three-dimensional shaped object is completed;
cause the discharge head to move above the box and discharge the shaping material into the box as the cleaning process when the processor determines that the one layer of the three-dimensional shaped object is completed;
cause the weight measuring device to measure the weight in the box;
determine whether the measured weight of the shaping material in the box is a predetermined value so as to output a determination result;
control the discharge head based on the comparison result, the determination result, and the measured line width,
wherein the discharge head includes a plasticization member configured to plasticize a source material and generate the shaping material,
the plasticization member includes a screw, and
the processor is configured to control a rotation speed of the screw to adjust an amount of the shaping material to be discharged from the discharge head.