FR2406489A1 - Diecasting pressure piston speed adjusting mechanism - has controllable valve keeping pressure constant on reaching set level - Google Patents

Diecasting pressure piston speed adjusting mechanism - has controllable valve keeping pressure constant on reaching set level

Info

Publication number
FR2406489A1
FR2406489A1 FR7829746A FR7829746A FR2406489A1 FR 2406489 A1 FR2406489 A1 FR 2406489A1 FR 7829746 A FR7829746 A FR 7829746A FR 7829746 A FR7829746 A FR 7829746A FR 2406489 A1 FR2406489 A1 FR 2406489A1
Authority
FR
France
Prior art keywords
pressure
piston
multiplicator
diecasting
controllable valve
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
FR7829746A
Other languages
French (fr)
Other versions
FR2406489B1 (en
Inventor
Josef Baur
Wilfried Schwab
Walter Klenk
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.)
Maschinenfabrik Weingarten AG
Original Assignee
Maschinenfabrik Weingarten 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 Maschinenfabrik Weingarten AG filed Critical Maschinenfabrik Weingarten AG
Publication of FR2406489A1 publication Critical patent/FR2406489A1/en
Application granted granted Critical
Publication of FR2406489B1 publication Critical patent/FR2406489B1/fr
Granted 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

A mechanism adjusts the pressure piston speed, and pressure, to necessary values, when pressure-diecasting, partic. in a cold-chamber machine with the three-phase system. The driving portion comprises a pressure cylinder with piston, preceded by a compression cylinder with multiplicator piston. The latter is of the stepped type, with a piston rod extending into the pressure cylinder. In the first two phases only the pressure piston crown is pressurised, while in the third, the multiplicator piston is also, the latter having a central drilling with non-return valve to which the pressure passages for the first and second phases are connected, and which extends into a piston rod on the side away from the pressure piston. The latter rod is connected to the pressure passages for the first two phases, and the annular central part of the multiplicator piston is pressurised via a separate passage for the third phase. A pressure passage is connected to the compression cylinder and incorporates a controllable valve regulating the pressure. When a set multiplicator pressure is reached, the valve holds the pressure in the passage constant.
FR7829746A 1977-10-20 1978-10-19 Diecasting pressure piston speed adjusting mechanism - has controllable valve keeping pressure constant on reaching set level Granted FR2406489A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772747066 DE2747066C2 (en) 1977-10-20 1977-10-20 Device for setting the plunger speeds and pressures in die-casting machines with a three-phase system, especially in cold-chamber die-casting machines

Publications (2)

Publication Number Publication Date
FR2406489A1 true FR2406489A1 (en) 1979-05-18
FR2406489B1 FR2406489B1 (en) 1983-12-09

Family

ID=6021831

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829746A Granted FR2406489A1 (en) 1977-10-20 1978-10-19 Diecasting pressure piston speed adjusting mechanism - has controllable valve keeping pressure constant on reaching set level

Country Status (2)

Country Link
DE (1) DE2747066C2 (en)
FR (1) FR2406489A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949583A1 (en) * 1979-12-10 1981-04-30 Eisenwerk Hensel Bayreuth Dipl.-Ing. Burkhardt Gmbh, 8580 Bayreuth Pressure equalising system for hot chamber diecasting machine - uses relief valve inside piston, between pressure vessel and overflow tank
BG31832A1 (en) * 1980-04-02 1982-04-15 Vutov Method for liquid or semi- liquid stamping

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012457A1 (en) * 1968-07-06 1970-03-20 Wotan Werke Gmbh
FR2021183A1 (en) * 1968-10-21 1970-07-17 Data Card Corp
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012457A1 (en) * 1968-07-06 1970-03-20 Wotan Werke Gmbh
DE1758615B1 (en) * 1968-07-06 1971-01-14 Wotan Werke Gmbh Die casting machine with multiplier
FR2021183A1 (en) * 1968-10-21 1970-07-17 Data Card Corp
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

Also Published As

Publication number Publication date
FR2406489B1 (en) 1983-12-09
DE2747066C2 (en) 1979-11-29
DE2747066B1 (en) 1979-03-15

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse