ATE132781T1 - CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING - Google Patents

CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING

Info

Publication number
ATE132781T1
ATE132781T1 AT91909466T AT91909466T ATE132781T1 AT E132781 T1 ATE132781 T1 AT E132781T1 AT 91909466 T AT91909466 T AT 91909466T AT 91909466 T AT91909466 T AT 91909466T AT E132781 T1 ATE132781 T1 AT E132781T1
Authority
AT
Austria
Prior art keywords
piston
casting
injection
unit
pressure peaks
Prior art date
Application number
AT91909466T
Other languages
German (de)
Inventor
Roberto Bragastini
Original Assignee
Int Press Dev Est
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 Int Press Dev Est filed Critical Int Press Dev Est
Application granted granted Critical
Publication of ATE132781T1 publication Critical patent/ATE132781T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die

Abstract

The injection unit comprises an injection cylinder (9), a hydraulically-operated injection piston (10), a fluid accumulator (1) for the operation at high speed of the injection piston (10) during the injection stroke and a pressure multiplier (12) for the operation at low speed and high pressure of the piston (10) at the end of the injection stroke of the piston (10). It also comprises an auxiliary cylinder/piston unit (6, 7) interposed between the injection piston (10) and the accumulator (1) to allow the advancement of the piston (7) of said auxiliary unit under the action of the accumulator (1) and the advancement of said injection piston (10) in accordance with that of said auxiliary piston (7). The cross-section of the auxiliary cylinder (6) is greater than the cross-section of the injection cylinder (9).
AT91909466T 1990-05-22 1991-05-15 CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING ATE132781T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02039490A IT1248476B (en) 1990-05-22 1990-05-22 INJECTION GROUP FOR HYDRAULIC DIE-CASTING MACHINE, EQUIPPED WITH A DEVICE FOR THE ELIMINATION OF INJECTION PRESSURE PEAKS

Publications (1)

Publication Number Publication Date
ATE132781T1 true ATE132781T1 (en) 1996-01-15

Family

ID=11166319

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91909466T ATE132781T1 (en) 1990-05-22 1991-05-15 CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING

Country Status (7)

Country Link
EP (1) EP0530244B1 (en)
CN (1) CN1056643A (en)
AT (1) ATE132781T1 (en)
DE (1) DE69116361T2 (en)
ES (1) ES2080948T3 (en)
IT (1) IT1248476B (en)
WO (1) WO1991017850A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101774005B (en) * 2009-01-12 2012-05-30 深圳领威科技有限公司 Oil-electric hybrid cold-chamber die casting machine injection system
CN101774004B (en) * 2009-01-12 2012-05-23 深圳领威科技有限公司 Oil-electric hybrid hot-chamber die casting machine injection system
CN101530902B (en) * 2009-04-16 2010-12-08 宁海县德科模塑有限公司 Stable-pressure device of Zinc alloy die casting mold
CN102451899A (en) * 2010-10-25 2012-05-16 上海一达机械有限公司 Oil pump driving device for pump station of hydraulic system in die casting machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2021539B2 (en) * 1970-05-02 1971-04-22 Wotan Werke Gmbh DIE CASTING MACHINE WITH MULTIPLIER
DE3014868A1 (en) * 1979-06-18 1981-01-22 Buehler Ag Geb DIE CASTING MACHINE
DE3123498C1 (en) * 1981-06-13 1983-02-03 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Device for the accelerated build-up and for the regulation of the squeezing pressure in die-casting machines

Also Published As

Publication number Publication date
WO1991017850A1 (en) 1991-11-28
EP0530244B1 (en) 1996-01-10
EP0530244A1 (en) 1993-03-10
CN1056643A (en) 1991-12-04
DE69116361D1 (en) 1996-02-22
DE69116361T2 (en) 1996-05-30
ES2080948T3 (en) 1996-02-16
IT9020394A0 (en) 1990-05-22
IT9020394A1 (en) 1991-11-22
IT1248476B (en) 1995-01-19

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