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JPS56122657A - Middle-and high-pressure two-stage injection casting method and casting machine - Google Patents

Middle-and high-pressure two-stage injection casting method and casting machine

Info

Publication number
JPS56122657A
JPS56122657A JP2637380A JP2637380A JPS56122657A JP S56122657 A JPS56122657 A JP S56122657A JP 2637380 A JP2637380 A JP 2637380A JP 2637380 A JP2637380 A JP 2637380A JP S56122657 A JPS56122657 A JP S56122657A
Authority
JP
Japan
Prior art keywords
pressure
die
moving
sprue
thence
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.)
Granted
Application number
JP2637380A
Other languages
Japanese (ja)
Other versions
JPS5851783B2 (en
Inventor
Hiroshi Ito
Katsuo Aoki
Yoshimichi Shirai
Seiji Yonezu
Yoshiharu Suzuki
Tomokazu Matsushita
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.)
Asmo Co Ltd
Denso Corp
Original Assignee
Asmo Co Ltd
NipponDenso Co 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 Asmo Co Ltd, NipponDenso Co Ltd filed Critical Asmo Co Ltd
Priority to JP55026373A priority Critical patent/JPS5851783B2/en
Publication of JPS56122657A publication Critical patent/JPS56122657A/en
Publication of JPS5851783B2 publication Critical patent/JPS5851783B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To enable precision castings without generating vent wells, vent gates and fins to be cast by injecting the material to be worked under low pressure in the state of a large sprue area, and decreasing the sprue area at the injection end thereby feeding the molten metal under high pressure.
CONSTITUTION: When a cylinder 2 is advanced, a moving A die 4 and a moving B die 7 advance and approach to a stationary die 8. Thence, both dies 4, 7 and the die 8 are clamped, and the material to be worked is poured through a pouring port 13, thence a low-pressure injection plunger 12 and a high-pressure injection plunger 14 are advanced simultaneously under middle pressure, whereby the material is injected at a middle speed under the middle pressure. The gas in the molds at this time vents through the mating gaps of the respective molds. At the injection end, the sprue area is made smaller. Next, the material is fed under high pressure by a high-pressure injection plunger 14. When the work 11 solidifies, the cylinder 2 is retreated and the moving B die 7 is retreated simultaneously with the moving A die 4, thence the sprue is cut with a sprue cutting punch 19.
COPYRIGHT: (C)1981,JPO&Japio
JP55026373A 1980-03-03 1980-03-03 Low-high pressure two-stage injection casting method and casting machine Expired JPS5851783B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55026373A JPS5851783B2 (en) 1980-03-03 1980-03-03 Low-high pressure two-stage injection casting method and casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55026373A JPS5851783B2 (en) 1980-03-03 1980-03-03 Low-high pressure two-stage injection casting method and casting machine

Publications (2)

Publication Number Publication Date
JPS56122657A true JPS56122657A (en) 1981-09-26
JPS5851783B2 JPS5851783B2 (en) 1983-11-18

Family

ID=12191701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55026373A Expired JPS5851783B2 (en) 1980-03-03 1980-03-03 Low-high pressure two-stage injection casting method and casting machine

Country Status (1)

Country Link
JP (1) JPS5851783B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660205A (en) * 2013-12-03 2014-03-26 稻朗（上海）电塑科技有限公司 Injection exhaust method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0161554U (en) * 1987-10-06 1989-04-19

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5568165A (en) * 1978-11-17 1980-05-22 Toyota Motor Corp Casting method and mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5568165A (en) * 1978-11-17 1980-05-22 Toyota Motor Corp Casting method and mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660205A (en) * 2013-12-03 2014-03-26 稻朗（上海）电塑科技有限公司 Injection exhaust method

Also Published As

Publication number Publication date
JPS5851783B2 (en) 1983-11-18

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