Plasticization device, three-dimensional shaping device, and injection molding device

Patent metadata

Field	Value
Publication number	US-11485061-B2
Application number	US-202017004307-A
Country	US
Kind code	B2
Filing date	Aug 27, 2020
Priority date	Aug 29, 2019
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A plasticization device includes: a rotor rotated by a drive motor and having a groove forming surface in which a first groove portion is formed along a rotation direction; a rotor case configured to accommodate the rotor; a barrel facing the groove forming surface and having a through hole; a first heating unit configured to heat the rotor or the barrel; and a cooling mechanism configured to cool a side surface of the rotor. In the plasticization device, a material supplied between the first groove portion and the barrel is plasticized by rotation of the rotor and heating by the first heating unit to flow out from the through hole, and the side surface of the rotor has a material guiding port configured to guide the material to the first groove portion, and a second groove portion configured to feed the material supplied between the rotor and the rotor case to the material guiding port.

First claim

What is claimed is:

1. A plasticization device comprising:
a rotor rotated by a drive motor and having a groove forming surface in which a first groove portion is formed along a rotation direction;
a rotor case configured to accommodate the rotor;
a barrel facing the groove forming surface and having a through hole;
a first heating unit configured to heat the rotor or the barrel; and
a cooling mechanism configured to cool a side surface of the rotor, wherein
a material supplied between the first groove portion and the barrel is plasticized by rotation of the rotor and heating by the first heating unit to flow out from the through hole, and
the side surface of the rotor has
a material guiding port configured to guide the material to the first groove portion, and
a second groove portion configured to feed the material supplied between the rotor and the rotor case to the material guiding port.

2. The plasticization device according to claim 1 , wherein
the cooling mechanism is provided inside the rotor case.

3. The plasticization device according to claim 1 , wherein
the cooling mechanism is provided inside the rotor.

4. The plasticization device according to claim 1 , wherein
the cooling mechanism is disposed along the second groove portion.

5. The plasticization device according to claim 1 , wherein
the rotor includes a second heating unit therein, and
a distance from the barrel to the second heating unit along a rotation axis of the rotor is shorter than a distance from the barrel to the cooling mechanism along the rotation axis of the rotor.

6. The plasticization device according to claim 1 , wherein
the cooling mechanism includes a first portion and a second portion,
a distance from the barrel to the first portion along a rotation axis of the rotor is shorter than a distance from the barrel to the second portion along the rotation axis of the rotor,
the cooling mechanism includes a cooling flow path through which a refrigerant flows, and
a density of the cooling flow path in the first portion is higher than a density of the cooling flow path in the second portion.

7. The plasticization device according to claim 1 , wherein
the cooling mechanism includes a first portion and a second portion,
a distance from the barrel to the first portion along a rotation axis of the rotor is shorter than a distance from the barrel to the second portion along the rotation axis of the rotor, and
the first portion and the second portion are individually controllable such that a temperature of a side surface portion of the rotor cooled by the first portion is lower than a temperature of a side surface portion of the rotor cooled by the second portion.

8. The plasticization device according to claim 1 , wherein
the cooling mechanism includes a cooling flow path through which a refrigerant flows.

9. A three-dimensional shaping device comprising:
the plasticization device according to claim 1 ; and
a nozzle communicating with the through hole and configured to discharge a plasticized material toward a table.

10. An injection molding device comprising:
the plasticization device according to claim 1 ; and
a nozzle communicating with the through hole and configured to inject a plasticized material to a mold.

Assignees

• Seiko Epson Corp

Inventors

• YUWAKI Kohei
• Nakamura Kazuhide
• Saito Koichi

Classifications

• B22F12/57

  Metering means · CPC title

• B22F12/53

  Nozzles · CPC title

• B22F12/33

  translatory in the deposition plane · CPC title

• B22F12/20

  Cooling means · CPC title

• B22F12/10

  Auxiliary heating means · CPC title