Plasticizing Device, Injection Molding Device, And Three-Dimensional Modeling Device

Patent metadata

Field	Value
Publication number	US-2023373143-A1
Application number	US-202318320448-A
Country	US
Kind code	A1
Filing date	May 19, 2023
Priority date	May 20, 2022
Publication date	Nov 23, 2023
Grant date	—

Abstract

A plasticizing device includes a rotor which has a groove forming surface provided with a groove, which rotates centering on a rotational axis, and a side surface of which is provided with a supply port communicated with the groove, a barrel which has an opposed surface opposed to the groove forming surface in a direction in which the rotational axis extends, and which is provided with a communication hole from which a material plasticized outflows, a heating unit configured to heat the material supplied via the supply port, and a housing configured to house the rotor, wherein the housing is provided with a first supply path and a second supply path configured to supply the material to the supply port.

First claim

What is claimed is:

1 . A plasticizing device comprising:
a rotor which has a groove forming surface provided with a groove, which rotates centering on a rotational axis, and a side surface of which is provided with a supply port communicated with the groove; a barrel which has an opposed surface opposed to the groove forming surface in a direction in which the rotational axis extends, and which is provided with a communication hole from which a material plasticized outflows; a heating unit configured to heat the material supplied to the groove via the supply port; and a housing configured to house the rotor, wherein the housing is provided with a first supply path and a second supply path configured to supply the material to the supply port.

2 . The plasticizing device according to claim 1 , further comprising:
a first material reservoir communicated with the first supply path; and a second material reservoir communicated with the second supply path.

3 . The plasticizing device according to claim 2 , wherein
a first material is retained in the first material reservoir, a second material is retained in the second material reservoir, and the first material and the second material are different from each other.

4 . The plasticizing device according to claim 1 , wherein
a minimum cross-sectional area of the first supply path and a minimum cross-sectional area of the second supply path are different from each other.

5 . The plasticizing device according to claim 1 , wherein
when defining an end portion at the supply port side of each of the first supply path and the second supply path as one end, another end in the first supply path and another end in the second supply path are directly or indirectly coupled to each other.

6 . The plasticizing device according to claim 1 , wherein
at least either one of the first supply path and the second supply path is provided with an adjuster configured to control a supply amount of the material.

7 . The plasticizing device according to claim 6 , further comprising:
a controller configured to control the adjuster, wherein the controller is configured to control the adjuster based on a position of the rotor in a rotational period thereof.

8 . An injection molding device comprising:
the plasticizing device according to claim 1 ; a nozzle section configured to emit the material plasticized by the plasticizing device; and a fixation part configured to fix a molding tool which receives the material.

9 . The injection molding device according to claim 8 , further comprising:
a cap member using a material higher in melting point than the material, wherein the molding tool includes a movable mold and a stationary mold, the cap member is arranged between the stationary mold and the nozzle section, the cap member has a core portion located inside, and a shell portion on a surface, and the core portion has a plurality of voids, and is higher in void ratio than the shell portion.

Assignees

• Seiko Epson Corp

Inventors

• Niuyama Masato
• Sugita Atsuhiko

Classifications

• B29C64/314

  Preparation · CPC title

• B29C64/209

  Heads; Nozzles · CPC title

• B29C64/118

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• B29C45/47

  using screws (B29C45/54 takes precedence) · CPC title

• B29C45/46

  Means for plasticising or homogenising the moulding material or forcing it into the mould {(combined with mould opening, closing or clamping devices B29C45/70)} · CPC title