ES8101429A1 - Pressure die casting - Google Patents

Pressure die casting

Info

Publication number
ES8101429A1
ES8101429A1 ES492477A ES492477A ES8101429A1 ES 8101429 A1 ES8101429 A1 ES 8101429A1 ES 492477 A ES492477 A ES 492477A ES 492477 A ES492477 A ES 492477A ES 8101429 A1 ES8101429 A1 ES 8101429A1
Authority
ES
Spain
Prior art keywords
pressure
chamber
multiplier
control
die casting
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.)
Expired
Application number
ES492477A
Other languages
Spanish (es)
Other versions
ES492477A0 (en
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Publication of ES492477A0 publication Critical patent/ES492477A0/en
Publication of ES8101429A1 publication Critical patent/ES8101429A1/en
Expired legal-status Critical Current

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
    • B22D17/32—Controlling equipment

Abstract

In a pressure die casting machine the high pressure forces for the afterpressure phase are produced by means of a pressure multiplier (5, 6). The working pressure provided in chamber (4) by the multiplier piston (6) is controlled by the pressure in the annular counter pressure chamber (8) of the multiplier cylinder (5). The pressure in the counter pressure chamber (8) is adjusted by a pressure limiting valve (17) whose response threshold is determined by a control pressure storage device (26). In order to ensure a rapid build-up of afterpressure without overshoot or over-control at least the control pressure storage device (26) in the circuit arrangement (17, 19, 21, 25, 26, 33) precontrolling the pressure limiting valve (17) is constructed to be elastically deformable so that the circuit arrangement reacts to pressure fluctuations on attainment of the response threshold by the pressure in the counterpressure chamber (8) with an elastic closing force whose characteristic as a function of the valve travel is non- linear.
ES492477A 1979-06-18 1980-06-16 Pressure die casting Expired ES8101429A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH565079 1979-06-18

Publications (2)

Publication Number Publication Date
ES492477A0 ES492477A0 (en) 1980-12-16
ES8101429A1 true ES8101429A1 (en) 1980-12-16

Family

ID=4297126

Family Applications (1)

Application Number Title Priority Date Filing Date
ES492477A Expired ES8101429A1 (en) 1979-06-18 1980-06-16 Pressure die casting

Country Status (7)

Country Link
JP (1) JPS564365A (en)
BE (1) BE883850A (en)
DE (1) DE3014868A1 (en)
ES (1) ES8101429A1 (en)
FR (1) FR2459096A1 (en)
GB (1) GB2050889B (en)
IT (1) IT1132069B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446836A1 (en) * 1984-12-21 1986-07-03 Mahle Gmbh, 7000 Stuttgart DEVICE FOR PRESSURE TIP PREVENTION IN THE PRESSING UNIT OF A DIE CASTING MACHINE
IT1248476B (en) * 1990-05-22 1995-01-19 Int Press Dev Est INJECTION GROUP FOR HYDRAULIC DIE-CASTING MACHINE, EQUIPPED WITH A DEVICE FOR THE ELIMINATION OF INJECTION PRESSURE PEAKS
BE1010155A6 (en) * 1997-11-05 1998-01-06 Buehler Ag Method for operating a drive piston and device for the implementation thereof.
DE102008055536A1 (en) * 2008-12-17 2010-07-01 Bühler Druckguss AG Method for operating a drive piston of a die casting machine and device for carrying out the method
PL2942127T3 (en) * 2014-03-21 2019-09-30 Italpresse Industrie S.P.A. Die-casting machine with injection assembly with a shut-off valve
CN108188371B (en) * 2018-01-18 2024-04-19 宁波海天金属成型设备有限公司 Differential oil circuit system for real-time control of injection in die casting machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB786402A (en) * 1956-02-22 1957-11-20 Finney Presses Ltd Accumulators or shock absorbers for hydraulic pressure systems
CH486939A (en) * 1967-12-18 1970-03-15 Vihorlat N P Snina Vyvojove St Press mechanism with multiplier in a press casting machine for metal
DE2021539B2 (en) * 1970-05-02 1971-04-22 Wotan Werke Gmbh DIE CASTING MACHINE WITH MULTIPLIER
DE1901747A1 (en) * 1968-10-19 1970-06-18 Triulzi Spa Spray casting machine pressure controller
DE2060681A1 (en) * 1970-12-10 1972-06-15 Wittmann Ag Gusstahlwerk Device for controlling the pressure curve on the press-fit part of casting machines
DE2401471A1 (en) * 1974-01-12 1975-07-24 Idra Pressen Gmbh PRESSED PART ON COLD CHAMBER DIE CASTING MACHINES WITH MULTIPLIER WORKING ACCORDING TO THE MULTI-PHASE PRINCIPLE
DE2406528C2 (en) * 1974-02-12 1982-04-01 Idra Pressen GmbH, 7000 Stuttgart Control device for a die-casting machine that works according to the multiphase principle
GB1582533A (en) * 1976-08-03 1981-01-07 Idra Pressen Gmbh Die-casting machine

Also Published As

Publication number Publication date
FR2459096A1 (en) 1981-01-09
IT8022523A0 (en) 1980-06-03
GB2050889A (en) 1981-01-14
DE3014868A1 (en) 1981-01-22
ES492477A0 (en) 1980-12-16
GB2050889B (en) 1983-04-27
IT1132069B (en) 1986-06-25
JPS564365A (en) 1981-01-17
BE883850A (en) 1980-10-16

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