SIMULTANEOUS MOLDING METHOD, AND EJECTION MOLDING DEVICE

Title:

SIMULTANEOUS MOLDING METHOD, AND EJECTION MOLDING DEVICE

Document Type and Number:

WIPO Patent Application WO/2011/052100

Kind Code:

A1

Abstract:

Provided is a simultaneous molding method wherein the bottom surface of a mold is ensured to be horizontal and is reliably ejected, the structure is simple, and flaskless top and bottom molds are molded simultaneously. Said method involves a step for defining a bottom molding space by means of: a bottom frame disposed, in a manner so as to be able to be transported in and out, on a molding position in which a mold is molded; a match-plate which is mounted onto the upper surface of the bottom frame, and has a pattern on both surfaces; an ascending/descending bottom filling frame which can be connected to the bottom edge of the bottom frame, and has a molding sand introducing hole on the side wall surface; and an ascending/descending bottom squeeze board. Said step also defines a top molding space by means of: an ascending/descending top frame which can be placed on the match-plate, and has a molding sand introducing hole on the side wall surface; and a top squeeze board which is installed on the upper side opposite from the match-plate. The method also involves: a step for simultaneously introducing molding sand into the bottom molding space and the top molding space; a step for simultaneously forming a top mold and a bottom mold by compressing the molding sand by raising the bottom squeeze board; a step for removing the top mold from the pattern on the upper side of the match-plate, and for removing the bottom mold from the pattern on the lower side of the match-plate; and a step for ejecting the top mold from the top frame, and for ejecting the bottom mold from the bottom filling frame.

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Inventors:

HADANO YUTAKA (JP)
KOMIYAMA TAKAYUKI (JP)
TAKASU SHUJI (JP)

Application Number:

PCT/JP2009/071556

Publication Date:

May 05, 2011

Filing Date:

December 25, 2009

Export Citation:

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Assignee:

SINTOKOGIO LTD (JP)
HADANO YUTAKA (JP)
KOMIYAMA TAKAYUKI (JP)
TAKASU SHUJI (JP)

International Classes:

B22C15/02; B22C15/24

Foreign References:

JPS5924552A	1984-02-08
JPS6418547A	1989-01-23
JPH059245B2	1993-02-04

Other References: