| CPC B29C 45/74 (2013.01) [B29C 45/47 (2013.01); B29C 45/60 (2013.01); B29C 45/62 (2013.01); B29C 64/209 (2017.08); B29C 64/295 (2017.08); B29C 64/314 (2017.08); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01)] | 13 Claims |
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1. A plasticizing device comprising:
A rotor configured to rotate around a rotational axis, the rotor having a grove forming surface provided with a groove;
a barrel having a first surface and a second surface outwardly opposite to each other, the first surface facing the groove forming surface in a first direction along the rotational axis, the barrel having a communication hole therein; and
a first heating assembly configured to heat a material fed between the rotor and the barrel, the first heating assembly surrounding the communication hole when viewed along the first direction, the barrel being located closer to the first heating assembly than the rotor along the first direction, the first heating assembly being configured with:
a first structure housing a first heat source therein, the first structure surrounding the communication hole by a first inner periphery of the first structure when viewed along the first direction,
a second structure disposed closer to the barrel than the first structure along the first direction, the second structure abutting the first structure, the second structure surrounding the communication hole by a second inner periphery of the second structure when viewed along the first direction,
wherein the material fed between the rotor and the barrel is plasticized and discharged from the communication hole due to a rotation of the rotor and heating by the first heating assembly,
the second structure has a tip that is located away from the first structure along the first direction, and the tip abuts the second surface of the barrel or is embedded in the barrel, and
the first inner periphery is located closer to the communication hole than the second inner periphery when viewed along the first direction.
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