Plasticizing device, injection device, molding apparatus, and manufacturing method of molded parts

Patent metadata

Field	Value
Publication number	US-10814539-B2
Application number	US-201715439413-A
Country	US
Kind code	B2
Filing date	Feb 22, 2017
Priority date	Sep 12, 2014
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

1. A plasticizing device includes a barrel including a resin material supply port portion and a fiber supply port portion which is formed on a distal side from the resin material supply port portion; and a screw that comprises a shaft body and a flight, and is received in the barrel. The barrel is disposed with a posture in which its axial line intersects a gravitational direction. A maximum length of an opening in the barrel of the fiber supply port portion along an axial direction of the barrel is 1 time or more and 2 times or less as much as a pitch of the flight disposed in a portion of the screw which faces the opening in the barrel of the fiber supply port portion in a direction perpendicular to the axial line of the barrel.

First claim

What is claimed is:

1. A plasticizing device comprising:
a barrel of a tubular shape comprising a resin material supply port portion which is formed in a peripheral wall portion and to which a resin material is supplied, and a fiber supply port portion which is formed on a distal side from the resin material supply port portion in the peripheral wall portion and to which a continuous fiber is supplied; and
a screw that comprises a shaft body, and a flight of a spiral shape formed integrally on a peripheral surface of the shaft body, and is received in the barrel and rotating in a rotating direction,
wherein the barrel is disposed with a posture in which its axial line intersects a gravitational direction,
a maximum length of a rectangular opening in the barrel of the fiber supply port portion with two edges parallel to the axial line of the barrel is 1 time or more and 2 times or less as much as a pitch of the flight disposed in a portion of the screw which faces the rectangular opening in the barrel of the fiber supply port portion in a direction perpendicular to the axial line of the barrel.

2. The plasticizing device according to claim 1 , wherein, in a planar view of the fiber supply port portion when the fiber supply port portion is seen in the gravitational direction, one end of the rectangular opening in the barrel of the fiber supply port portion in a width direction perpendicular to the axial line is located between a position distant as much as a distance R(√3/2), in which R is an inner diameter of the barrel, from the axial line in the width direction and a position distant as much as a distance R from the axial in the width direction line, including these two positions, in a range where the rotating direction of the screw around the axial line becomes a downward direction along the gravitational direction.

3. The plasticizing device according to claim 2 , wherein, in the planar view of the fiber supply port portion when the fiber supply port portion is seen in the gravitational direction, the one end of the rectangular opening in the barrel of the fiber supply port portion in the width direction is located at the position distant as much as the distance R from the axial line in the range where the rotating direction of the screw around the axial line becomes the downward direction along the gravitational direction.

4. The plasticizing device according to claim 2 , wherein, in the planar view of the fiber supply port portion when the fiber supply port portion is seen in the gravitational direction, the other end of the fiber supply port portion in the width direction is located in a range where the rotating direction of the screw around the axial line becomes an upward direction along the gravitational direction.

5. The plasticizing device according to claim 3 wherein, in the planar view of the fiber supply port portion when the fiber supply port portion is seen in the gravitational direction, the other end of the fiber supply port portion in the width direction is located in a range where the rotating direction of the screw around the axial line becomes an upward direction along the gravitational direction.

6. The plasticizing device according to claim 1 , wherein the screw comprises a supplying section, a compressing section, a measuring section, a fiber pull-in section, and a fiber kneading section, and the sections are arranged in order from a proximal end of the screw toward a distal end thereof,
the fiber pull-in section faces the rectangular opening in the direction perpendicular to the axial line, and in the shaft body, a diameter of a portion in which the fiber pull-in section is formed is smaller than a diameter of a portion in which the measuring section is formed and a diameter of a portion in which the fiber kneading section is formed.

7. An injection device comprising:
the plasticizing device according to claim 1 ;
a discharging section connected to a distal end of the barrel; and
an injecting section coupled with the discharging section and configured to inject a resin supplied through the discharging section, the resin being already molten and kneaded in the plasticizing device.

8. A molding apparatus comprising:
the injection device according to claim 7 ; and
a clamping device configured to clamp a mold into which the resin is injected by the injection device.

Assignees

• Toshiba Machine Co Ltd

Inventors

• Momono Masamichi

Classifications

• B29B7/60 Primary

  for feeding, e.g. end guides for the incoming material {(B29B7/7615 takes precedence; feeding predetermined amounts for mixing in general B01F35/714)} · CPC title

• B29B7/7471

  Mixers in which the mixing takes place at the inlet of a mould, e.g. mixing chambers situated in the mould opening · CPC title

• B29B7/429

  Screws (B29B7/421 takes precedence) · CPC title

• B29B7/90

  Fillers or reinforcements {, e.g. fibres} · CPC title

• B29B7/426

  with consecutive casings or screws, e.g. for charging, discharging, mixing · CPC title