JPS55147457A - Mold molding method - Google Patents

Mold molding method

Info

Publication number
JPS55147457A
JPS55147457A JP5461779A JP5461779A JPS55147457A JP S55147457 A JPS55147457 A JP S55147457A JP 5461779 A JP5461779 A JP 5461779A JP 5461779 A JP5461779 A JP 5461779A JP S55147457 A JPS55147457 A JP S55147457A
Authority
JP
Japan
Prior art keywords
membrane
plate
pattern
flask
air
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
JP5461779A
Other languages
Japanese (ja)
Inventor
Gaiji Hobo
Takashi Kuzutani
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.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works Ltd
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 Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Priority to JP5461779A priority Critical patent/JPS55147457A/en
Publication of JPS55147457A publication Critical patent/JPS55147457A/en
Pending legal-status Critical Current

Links

Landscapes

  • Casting Devices For Molds (AREA)

Abstract

PURPOSE: To obtain the mold of averaged high strength and high accuracy by interposing an air layer between the top surface of the molding sand packed in the mold-forming cavity above the pattern with vent holes and the squeeze plate provided with a membrane on its bottom surface, letting the membrane expand and pressing the squeeze plate in that state.
CONSTITUTION: A mold-forming cavity 5 is formed by the surface of the pattern device consisting of a pattern 2 and a pattern plate 3 and the internal surface of the molding flask 4 placed on the plate 3. A build-up flask 8 is hermetically placed on the molding flask 4 and molding sand S is packed in the cavity 5, after which the sequeeze plate 10 with an expansion membrane 13 is hermetically lowered in the build-up flask 8. A suitable amount of air layer is interposed between the bottom of the plate 10, i.e., the surface of the membrane 13 and the surface of the sand S. A valve 15 is opened to feed high-pressure air to the back side of the membrane 13 and let the membrane 13 expand instantaneously, by which the air in the flasks 4, 8 is compressed to a relatively high velocity of flow. This air is passed among the sand S particles and is exhausted through the vent holes 6 in the suitable places at the surface of the pattern device. Following to this, the valve 15 is reclosed to hold the high-pressure air confined in the membrane 13, in which state the plate 10 is lowered.
COPYRIGHT: (C)1980,JPO&Japio
JP5461779A 1979-05-03 1979-05-03 Mold molding method Pending JPS55147457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5461779A JPS55147457A (en) 1979-05-03 1979-05-03 Mold molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5461779A JPS55147457A (en) 1979-05-03 1979-05-03 Mold molding method

Publications (1)

Publication Number Publication Date
JPS55147457A true JPS55147457A (en) 1980-11-17

Family

ID=12975692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5461779A Pending JPS55147457A (en) 1979-05-03 1979-05-03 Mold molding method

Country Status (1)

Country Link
JP (1) JPS55147457A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613633A (en) * 1984-06-16 1986-01-09 Asahi Malleable Iron Co Ltd Method and machine for molding

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438220A (en) * 1977-09-01 1979-03-22 Sintokogio Ltd Method of maiking mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438220A (en) * 1977-09-01 1979-03-22 Sintokogio Ltd Method of maiking mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613633A (en) * 1984-06-16 1986-01-09 Asahi Malleable Iron Co Ltd Method and machine for molding

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