WO1994029047A1 - Procede de moulage a moule original constitue de coquilles en resine - Google Patents

Procede de moulage a moule original constitue de coquilles en resine Download PDF

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Publication number
WO1994029047A1
WO1994029047A1 PCT/JP1993/000761 JP9300761W WO9429047A1 WO 1994029047 A1 WO1994029047 A1 WO 1994029047A1 JP 9300761 W JP9300761 W JP 9300761W WO 9429047 A1 WO9429047 A1 WO 9429047A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
prototype
resin
molten metal
foam
Prior art date
Application number
PCT/JP1993/000761
Other languages
English (en)
Japanese (ja)
Inventor
Takeo Nakagawa
Jie Wei
Naoichiro Saito
Original Assignee
Cmet, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cmet, Inc. filed Critical Cmet, Inc.
Priority to PCT/JP1993/000761 priority Critical patent/WO1994029047A1/fr
Publication of WO1994029047A1 publication Critical patent/WO1994029047A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B22C7/023—Patterns made from expanded plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould

Definitions

  • reference numeral 42 denotes an inlet for molten metal 48
  • reference numeral 42B denotes a vent port, which are integrally formed with the foam model 42.
  • the vanishing prototype 53 is molded by the vanishing prototype 53 three-light-curing molding method.
  • the disappearing prototype 53 is molded in a short time and with good shape accuracy without using a mold.
  • the problems of the loss-tox method and the full-mold method are effectively solved.
  • FIG. 5 is a diagram showing a conventional manufacturing method.
  • the three-dimensional shape of the animal 15, that is, the shape of the outer surface 15 a is designed using a three-dimensional CAD system.
  • three-dimensional shape information of the animal 15 is defined by the three-dimensional CAD system.
  • the production of the prototype 1 of the shell resin shown in FIG. 1 is performed. For this, a light curing molding method is used.
  • the photo-curing molding method irradiates the surface of a liquid photo-curable liquid 62 with a powerful ultraviolet ray (laser power ⁇ preferable) 63 to irradiate the irradiated area.
  • a powerful ultraviolet ray (laser power ⁇ preferable) 63 By curing the resin 62 and laminating it in layers, a three-dimensional resin cured image is created.
  • the shape obtained is determined by the trajectory of the laser beam 63. That is, as schematically shown in FIG. 6, a spot of the laser beam 63 is applied to the surface of the photocurable liquid 62 filled in the tank, and the laser beam 63 is two-dimensionally irradiated by the scanner 65. A part of the surface is solidified by moving to.
  • the shape 1C corresponding to the material to be actually molded is added with the shape 1A of the molten metal injection portion and the shape 1B of the gas vent port, and the hollow shape corresponding to the added shape is added.
  • Hull prototype 1 Power molding is added.
  • a molten metal at a predetermined temperature is injected into the mold 12 from a previously provided molten metal injection section 1 shown in FIG. ⁇
  • the outer shell resin prototype 1 and the foam particles 13 remaining in the mold 12 are burned and vaporized by the injection of the molten metal.
  • the space 12 b in the mold 12 is filled with the metal melt without gaps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Ce procédé de moulage permet de simplifier les opérations de production d'un moule de fonderie et de réduire le temps nécessaire au moulage d'une pièce de fonderie, ainsi que les coûts de production. Ce procédé se décompose en plusieurs opérations: production d'un moule original constitué de coquilles en résine grâce à un procédé de moulage par photopolymérisation, la surface extérieure de ces coquilles reproduisant la forme de la pièce de fonderie à réaliser; remplissage de ce moule original avec de la mousse; mise en place autour de la surface extérieure du moule original constitué de coquilles en résine d'un matériau de moule de fonderie dont la forme demeure inchangée à la température de fusion de la matière à couler; injection de la matière en fusion dans un moule de coulée contenant le moule de fonderie en coquilles de résine.
PCT/JP1993/000761 1993-06-07 1993-06-07 Procede de moulage a moule original constitue de coquilles en resine WO1994029047A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1993/000761 WO1994029047A1 (fr) 1993-06-07 1993-06-07 Procede de moulage a moule original constitue de coquilles en resine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1993/000761 WO1994029047A1 (fr) 1993-06-07 1993-06-07 Procede de moulage a moule original constitue de coquilles en resine

Publications (1)

Publication Number Publication Date
WO1994029047A1 true WO1994029047A1 (fr) 1994-12-22

Family

ID=14070319

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/000761 WO1994029047A1 (fr) 1993-06-07 1993-06-07 Procede de moulage a moule original constitue de coquilles en resine

Country Status (1)

Country Link
WO (1) WO1994029047A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5855718A (en) * 1996-10-07 1999-01-05 3D Systems, Inc. Method of and apparatus for making partially solidified three-dimensional objects on a layer-by-layer basis from a solidifiable medium
US8108982B2 (en) 2005-01-18 2012-02-07 Floodcooling Technologies, L.L.C. Compound mold tooling for controlled heat transfer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05131245A (ja) * 1991-11-08 1993-05-28 Takeo Nakagawa 外皮樹脂原型を用いる鋳造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05131245A (ja) * 1991-11-08 1993-05-28 Takeo Nakagawa 外皮樹脂原型を用いる鋳造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5855718A (en) * 1996-10-07 1999-01-05 3D Systems, Inc. Method of and apparatus for making partially solidified three-dimensional objects on a layer-by-layer basis from a solidifiable medium
US6261506B1 (en) 1996-10-07 2001-07-17 3D Systems, Inc. Method of making a three-dimensional object
US8108982B2 (en) 2005-01-18 2012-02-07 Floodcooling Technologies, L.L.C. Compound mold tooling for controlled heat transfer

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