JPS56144855A - Method and device for two-stage die casting under reduced pressure - Google Patents

Method and device for two-stage die casting under reduced pressure

Info

Publication number
JPS56144855A
JPS56144855A JP4876180A JP4876180A JPS56144855A JP S56144855 A JPS56144855 A JP S56144855A JP 4876180 A JP4876180 A JP 4876180A JP 4876180 A JP4876180 A JP 4876180A JP S56144855 A JPS56144855 A JP S56144855A
Authority
JP
Japan
Prior art keywords
vacuum
injection
limit switch
plunger
evacuation
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
JP4876180A
Other languages
Japanese (ja)
Other versions
JPS642469B2 (en
Inventor
Takahiko Takeshima
Koji Matsui
Tadashi Ueki
Tsuneo Ueno
Masayuki Nishimoto
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP4876180A priority Critical patent/JPS56144855A/en
Publication of JPS56144855A publication Critical patent/JPS56144855A/en
Publication of JPS642469B2 publication Critical patent/JPS642469B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain die cast products of less gaseous residual and high quality by starting the evacuation of dies first at a low degree of vacuum from near the part where a plunger tip closes the pouring port of an injection sleeve in the low-speed injection stroke of a cold chamber die casting machine, and increasing the degree of vacuum to higher degrees from the vicinity of the part shifting into high-speed injection stroke.
CONSTITUTION: With dies held clamped and a valve 12 held open, molten steel is supplied through the molten metal pouring port 5 of an injection sleeve 4, and an injection cylinder 6 is operated to advance an injection plunger 7. When a plunger tip 8 closes the port 5, a striker 9 actuates a limit switch LS-1 for starting primary evacuation, thence a vacuum pump 19 is run to create a low degree of vacuum in the cavity 3. As the plunger 7 advances, a limit switch LS-2 for starting secondary evacuation is actuated and a vacuum pump 22 is run to evacuate the cavity 3 inside to a high vacuum. High-speed injection is accomplished by a limit switch LS-3 for high-speed injection.
COPYRIGHT: (C)1981,JPO&Japio
JP4876180A 1980-04-15 1980-04-15 Method and device for two-stage die casting under reduced pressure Granted JPS56144855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4876180A JPS56144855A (en) 1980-04-15 1980-04-15 Method and device for two-stage die casting under reduced pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4876180A JPS56144855A (en) 1980-04-15 1980-04-15 Method and device for two-stage die casting under reduced pressure

Publications (2)

Publication Number Publication Date
JPS56144855A true JPS56144855A (en) 1981-11-11
JPS642469B2 JPS642469B2 (en) 1989-01-17

Family

ID=12812258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4876180A Granted JPS56144855A (en) 1980-04-15 1980-04-15 Method and device for two-stage die casting under reduced pressure

Country Status (1)

Country Link
JP (1) JPS56144855A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115662U (en) * 1984-01-11 1985-08-05 東芝機械株式会社 Vacuum shut off valve for die casting machine
JPH11293375A (en) * 1998-04-14 1999-10-26 Hitachi Metals Ltd Aluminum alloy die casting with high toughness and its production
WO2001051237A1 (en) * 2000-01-12 2001-07-19 Nippon Light Metal Co., Ltd. Die cast method and die cast machine
JP2003062652A (en) * 2001-08-23 2003-03-05 Toyota Motor Corp Vacuum die casting equipment and method
KR100891055B1 (en) 2003-05-16 2009-03-31 도시바 기카이 가부시키가이샤 Die casting device and casting method
JP2014034057A (en) * 2012-08-10 2014-02-24 Honda Motor Co Ltd Reduced-pressure casting apparatus, and reduced-pressure casting method
JP2014176888A (en) * 2013-03-15 2014-09-25 Ube Machinery Corporation Ltd Degassing device for mold

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2008088064A1 (en) * 2007-01-17 2010-05-13 宇部興産機械株式会社 Casting method and die casting machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115662U (en) * 1984-01-11 1985-08-05 東芝機械株式会社 Vacuum shut off valve for die casting machine
JPH0222126Y2 (en) * 1984-01-11 1990-06-14
JPH11293375A (en) * 1998-04-14 1999-10-26 Hitachi Metals Ltd Aluminum alloy die casting with high toughness and its production
WO2001051237A1 (en) * 2000-01-12 2001-07-19 Nippon Light Metal Co., Ltd. Die cast method and die cast machine
US6648054B2 (en) 2000-01-12 2003-11-18 Nippon Light Metal Co., Ltd. Die casting method and die casting machine
CN1296160C (en) * 2000-01-12 2007-01-24 日本轻金属株式会社 Die cast machine
KR100828896B1 (en) * 2000-01-12 2008-05-09 니폰게이긴조쿠가부시키가이샤 Die cast method and die cast machine
JP2003062652A (en) * 2001-08-23 2003-03-05 Toyota Motor Corp Vacuum die casting equipment and method
KR100891055B1 (en) 2003-05-16 2009-03-31 도시바 기카이 가부시키가이샤 Die casting device and casting method
JP2014034057A (en) * 2012-08-10 2014-02-24 Honda Motor Co Ltd Reduced-pressure casting apparatus, and reduced-pressure casting method
JP2014176888A (en) * 2013-03-15 2014-09-25 Ube Machinery Corporation Ltd Degassing device for mold

Also Published As

Publication number Publication date
JPS642469B2 (en) 1989-01-17

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