JPS5750240A - Method for making mold - Google Patents

Method for making mold

Info

Publication number
JPS5750240A
JPS5750240A JP12763980A JP12763980A JPS5750240A JP S5750240 A JPS5750240 A JP S5750240A JP 12763980 A JP12763980 A JP 12763980A JP 12763980 A JP12763980 A JP 12763980A JP S5750240 A JPS5750240 A JP S5750240A
Authority
JP
Japan
Prior art keywords
flask
gas
molding
hole
supply hole
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP12763980A
Other languages
Japanese (ja)
Inventor
Nagato Unosaki
Kazuharu Matsui
Shigehiro Toyoda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
Shinto Industrial Co Ltd
Original Assignee
Sintokogio Ltd
Shinto Kogyo KK
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 Sintokogio Ltd, Shinto Kogyo KK filed Critical Sintokogio Ltd
Priority to JP12763980A priority Critical patent/JPS5750240A/en
Publication of JPS5750240A publication Critical patent/JPS5750240A/en
Pending legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To suck a gas from a gas supply hole through the molding sand in a molding flask into an evacuating chamber and prevent the leakage of the gas by connecting a gas generator to the gas supply hole of a cover member placed on the molding flask on a pattern plate provided with the evacuating chamber.
CONSTITUTION: Molding sand 8 is charged into the space delineated by a pattern plate 1 and a molding flask 6, and the top surface of the flask 6 is covered with a film sheet 9; at the same time, a vacuum pump is operated. Then, negative pressure is developed in the flask 6 via an evacuating chamber 2 and vent holes 3, and the sand 8 is packed uniformly. Next, the sheet 9 is removed, a cover member 10 is put on the top surface of the flask 6, and further a gas generator 15 is connected via a conduit 14 to the gas supply hole 12 of the member 10. Thence, the vacuum pump is operated to suck the gas of the generator 15 into the flask 6 through the conduit 14 and the hole 12, and the gas is sucked away through the molding sand 8 then through the hole 3, the chamber 2, and a suction pipe 18.
COPYRIGHT: (C)1982,JPO&Japio
JP12763980A 1980-09-12 1980-09-12 Method for making mold Pending JPS5750240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12763980A JPS5750240A (en) 1980-09-12 1980-09-12 Method for making mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12763980A JPS5750240A (en) 1980-09-12 1980-09-12 Method for making mold

Publications (1)

Publication Number Publication Date
JPS5750240A true JPS5750240A (en) 1982-03-24

Family

ID=14965064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12763980A Pending JPS5750240A (en) 1980-09-12 1980-09-12 Method for making mold

Country Status (1)

Country Link
JP (1) JPS5750240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273015A (en) * 2013-05-13 2013-09-04 山东建筑大学 Single-column sodium silicate-bonded sand molding machine and molding technology thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836095U (en) * 1971-09-07 1973-04-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836095U (en) * 1971-09-07 1973-04-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273015A (en) * 2013-05-13 2013-09-04 山东建筑大学 Single-column sodium silicate-bonded sand molding machine and molding technology thereof

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