Three-dimensional shaping apparatus and control method for three-dimensional shaping apparatus

A three-dimensional shaping apparatus comprising:

• a melting section including a screw that has a groove, the melting section being configured to melt at least a part of a material into a shaping material with rotation of the screw;
• a first channel through which the shaping material flows, the first channel extending along a first direction, the first channel having first and second ends outwardly opposite to each other along the first direction, the first end being connected to the melting section;
• a nozzle connected to the second end of the first channel and configured to eject the shaping material;
• an ejection-amount adjusting mechanism provided in the first channel and configured to adjust an ejection amount of the shaping material from the nozzle;
• a suction member configured to suck the shaping material in the first channel;
• a shaping table on which the shaping material ejected from the nozzle is stacked;
• a moving mechanism configured to change relative positions of the nozzle and the shaping table;
• a memory configured to store a program;
• and
• a processor configured to execute the program so as to control the melting section, the ejection-amount adjusting mechanism, the moving mechanism, and the suction member to shape a three-dimensional shaped object in a shaping region of the shaping table, wherein
• within a period in which the three-dimensional shaped object is shaped, the processor is configured to stop the rotation of the screw after stopping the ejection of the shaping material from the nozzle by controlling the ejection-amount adjusting mechanism and before resuming the ejection of the shaping material from the nozzle to the shaping region,
• the suction member is located between the nozzle and the ejection-amount adjusting mechanism in the first channel along the first direction, and
• the processor is configured to control the ejection-amount adjusting mechanism to stop the ejection of the shaping material from the nozzle and control the suction member to suck the shaping material remaining in the first channel between the ejection-amount adjusting mechanism and the nozzle.

A three-dimensional shaping apparatus comprising:

• a melting section including a heater that heats a material, the melting section being configured to melt at least a part of the material into a shaping material with heating by the heater;
• a first channel through which the shaping material flows, the first channel extending along a first direction, the first channel having first and second ends outwardly opposite to each other along the first direction, the first end being connected to the melting section;
• a nozzle connected to the second end of the first channel and configured to eject the shaping material;
• an ejection-amount adjusting mechanism provided in the first channel and configured to adjust an ejection amount of the shaping material from the nozzle;
• a suction member configured to suck the shaping material in the first channel;
• a shaping table on which the shaping material ejected from the nozzle is stacked;
• a moving mechanism configured to change relative positions of the nozzle and the shaping table;
• a memory configured to store a program;
• and
• a processor configured to execute the program so as to control the melting section, the ejection-amount adjusting mechanism, the moving mechanism, and the suction member to shape a three-dimensional shaped object in a shaping region of the shaping table, wherein
• within a period in which the three-dimensional shaped object is shaped, the processor is configured to stop the heating of the material by the heater after stopping the ejection of the shaping material from the nozzle by controlling the ejection-amount adjusting mechanism and before resuming the ejection of the shaping material from the nozzle to the shaping region,
• the suction member is located between the nozzle and the ejection-amount adjusting mechanism in the first channel along the first direction, and
• the processor is configured to control the ejection-amount adjusting mechanism to stop the ejection of the shaping material from the nozzle and control the suction member to suck the shaping material remaining in the first channel between the ejection-amount adjusting mechanism and the nozzle.

A three-dimensional shaping apparatus comprising:

• a melting section configured to melt a material into a shaping material;
• a first channel through which the shaping material flows, the first channel extending along a first direction, the first channel having first and second ends outwardly opposite to each other along the first direction, the first end being connected to the melting section;
• a nozzle connected to the second end of the first channel and configured to eject the shaping material;
• an ejection-amount adjusting mechanism provided in the first channel and configured to adjust an ejection amount of the shaping material from the nozzle;
• a suction member configured to suck the shaping material in the first channel;
• a shaping table on which the shaping material ejected from the nozzle is stacked;
• a moving mechanism configured to change relative positions of the nozzle and the shaping table;
• a purge-material supplying mechanism configured to supply a purge material to the melting section;
• a memory configured to store a program;
• and
• a processor configured to execute the program so as to control the melting section, the ejection-amount adjusting mechanism, the moving mechanism, and the suction member to shape a three-dimensional shaped object in a shaping region of the shaping table, wherein
• within a period in which the three-dimensional shaped object is shaped, the processor is configured to control the ejection-amount adjusting mechanism to stop the ejection of the shaping material from the nozzle and, thereafter, prior to resumption of the ejection of the shaping material from the nozzle to the shaping region, control the moving mechanism and the purge-material supplying mechanism to supply the purge material to the melting section and discharge, using the purge material, the shaping material remaining in the melting section to a region different from the shaping region,
• the suction member is located between the nozzle and the ejection-amount adjusting mechanism in the first channel along the first direction, and
• the processor is configured to control the ejection-amount adjusting mechanism to stop the ejection of the shaping material from the nozzle and control the suction member to suck the shaping material remaining in the first channel between the ejection-amount adjusting mechanism and the nozzle.