EP0037125A1 - Arrangement for die casting metals and alloys - Google Patents
Arrangement for die casting metals and alloys Download PDFInfo
- Publication number
- EP0037125A1 EP0037125A1 EP81102472A EP81102472A EP0037125A1 EP 0037125 A1 EP0037125 A1 EP 0037125A1 EP 81102472 A EP81102472 A EP 81102472A EP 81102472 A EP81102472 A EP 81102472A EP 0037125 A1 EP0037125 A1 EP 0037125A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- gas
- chamber
- cavity
- die
- 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
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 5
- 239000000956 alloy Substances 0.000 title claims abstract description 5
- 238000004512 die casting Methods 0.000 title abstract description 3
- 229910052751 metal Inorganic materials 0.000 title abstract 3
- 239000002184 metal Substances 0.000 title abstract 3
- 150000002739 metals Chemical class 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000005058 metal casting Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 31
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
-
- 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
- B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
- B22D17/06—Air injection machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
Definitions
- the invention relates to a device for the press casting of metals and alloys using an increased gas pressure above the solidifying melt, consisting of a hydraulic press with a press cylinder, a piston which divides the cylinder into two spaces which are connected to the hydraulic system of the press , and with a piston rod to which a press plate and a press mold are fastened, wherein at least one gas collection cavity is formed in the press mold and is connected to a gas container by shut-off elements.
- the press mold is connected to a press piston by means of a pneumatic piston which is arranged in a pneumatic cylinder, the compression space in front of the pneumatic piston being connected to the press mold cavities, to which compressed gas is supplied by gas lines and at least one adjustable check valve is supplied, which opens in the direction from the compression space in front of the pneumatic piston to the mold cavities (Bulg. Pat. No. 21 077).
- This device has the disadvantage that the usable stroke is shortened due to the installation of an additional element, namely a pneumatic cylinder with piston between the plunger and the die, that the die is unsafe during operation due to its movable connection with the plunger and that the mold must first be closed before the gas can be compressed.
- Vorrich- un t g is provided with an independent hydro-pneumatic multi p l ikator, which is arranged in the plunger and by means of respective shut-off elements h older with a Gasbe- and is connected to the die cavity.
- the multiplier is operated on a special command to increase the pressure of the gas in the mold cavity to the required value.
- This device has the disadvantage that it very compli - is built ert zi and does not permit the application of a high gas pressure immediately after closing the mold.
- the invention has for its object to design the device of the type mentioned so that the compression of the gas take place automatically during the empty stroke of the press and a high gas pressure can be exerted on the solidifying melt immediately after closing the mold.
- a chamber is formed in the piston rod, which is filled to a certain level with operating fluid from the hydraulic system of the press.
- the lower part of this chamber is with the space of the press cylinder connected below the piston. This space is in turn connected to the hydraulic system of the press via a shut-off element.
- the upper part of the chamber is connected to the gas container via a check valve and to the mold cavity via a shut-off valve.
- the mold cavity is in turn connected to the atmosphere via another shut-off valve.
- the device according to the invention has the advantage that the development of systems for compressing the gas in each mold is eliminated and a maximum gas pressure can be exerted immediately after the mold is closed.
- a movable partition can advantageously be arranged in the chamber between the operating liquid and the gas.
- the device consists of a press cylinder 1 with a press piston 2 arranged therein, which has a piston rod 3. On the piston rod 3, a press plate 14 and a die 15 are attached. The piston 2 and the cylinder 1 are sealed from one another by means of ring-shaped sealing elements 6. The piston rod 3 and the cylinder 1 are sealed by sealing elements 12.
- the space 4 above the piston 2 is connected to the hydraulic system of the press by means of a pipeline 5.
- the space 8 of the press cylinder 1 below the Piston 2 is connected to the hydraulic system of the press via a shut-off element 10.
- a chamber 9 is formed, which to a certain level st._ with operating liquid 13 from the hydraulic system of the press is filled i
- the rest of the chamber 9 is filled with gas 24th
- the lower part of the chamber 9 is connected via a pipe 11 and a channel 7 to the space 8 below the piston 2.
- the upper part of the chamber 9 is connected via a pipe 23 at the same time via a check valve 21 to the gas container 22, via a shut-off valve 18 to the cavity 16 of the mold 15 and via an adjustable check valve 19 to the atmosphere.
- the cavity 16 of the die 15 is in turn connected to the atmosphere via a shut-off valve 17.
- the chamber 9 is connected to a manometer 20 for checking the gas pressure.
- valve 18 After solidification of the pressed part in the mold the valve 18 closed.
- the valve 17 for releasing the gas remaining in the die into the atmosphere is opened.
- a command is given for the backward stroke of the plunger, ie the pressure in chamber 4 is reduced by connecting pipe 5 to the press container.
- the piston, together with the die 15 moves upwards under the action of the pressure of the gas in the chamber 9, the operating liquid 13 running back into the space 8 below the piston.
- the piston 2 After the pressure in the chamber 9 and in the gas container 22 has been equalized, the piston 2 moves further downward, an additional quantity of gas flowing from the gas container 22 through the check valve 21 into the chamber 9, as a result of which the device returns to the starting position.
- the device according to the invention operates as a normal hydraulic press.
- a movable partition 25 is arranged in the chamber 9 between the operating liquid 13 and the gas 24, which is designed as a floating piston which is sealed to the wall of the chamber 9 by means of annular sealing elements 26. In this way, direct contact between gas and operating fluid is avoided and the risk of possible interaction is eliminated.
- the movable partition is designed as an elastic membrane 27 which is fixedly attached to the chamber 9.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Formation And Processing Of Food Products (AREA)
- Lead Frames For Integrated Circuits (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Steroid Compounds (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Preßgießen von Metallen und Legierungen unter Anwendung eines erhöhten Gasdrucks über der erstarrenden Schmelze, bestehend aus einer hydraulischen Presse mit einem Preßzylinder, einem Kolben, der den Zylinder in zwei Räume teilt, die mit dem hydraulischen System der Presse verbunden sind, und mit einer Kolbenstange, an der eine Preßplatte und eine Preßform befestigt sind, wobei in der Preßform mindestens ein Gassammelhohlraum ausgebildet ist, der durch Absperrelemente mit einem Gasbehälter verbunden ist.The invention relates to a device for the press casting of metals and alloys using an increased gas pressure above the solidifying melt, consisting of a hydraulic press with a press cylinder, a piston which divides the cylinder into two spaces which are connected to the hydraulic system of the press , and with a piston rod to which a press plate and a press mold are fastened, wherein at least one gas collection cavity is formed in the press mold and is connected to a gas container by shut-off elements.
Bei einer bekannten Vorrichtung zum Preßgießen von Metallen und Legierungen ist die Preßform mit einem Preßkolben mittels eines pneumatischen Kolbens verbunden, welcher in einem pneumatischen Zylinder angeordnet ist, wobei der Kompressionsraum vor dem pneumatischen Kolben mit den Preßformhohlräumen verbunden ist, denen Druckgas durch Gasleitungen und mindestens ein regulierbares Rückschlagventil zugeführt wird, das sich in Richtung von dem Kompressionsraum vor dem pneumatischen Kolben zu den Preßformhohlräumen hin öffnet (Bulg. Pat. Nr. 21 077). Diese Vorrichtung hat den Nachteil, daß der nutzbare Hub infolge des Einbaus eines zusätzlichen Elements, nämlich eines pneumatischen Zylinders mit Kolben zwischen dem Preßkolben und der Preßform, verkürzt wird, daß die Preßform während des Betriebs infolge ihrer beweglichen Verbindung mit dem Preßkolben unsicher geführt ist und daß die Preßform zuerst geschlossen werden muß, ehe das Gas komprimiert werden kann.In a known device for the press casting of metals and alloys, the press mold is connected to a press piston by means of a pneumatic piston which is arranged in a pneumatic cylinder, the compression space in front of the pneumatic piston being connected to the press mold cavities, to which compressed gas is supplied by gas lines and at least one adjustable check valve is supplied, which opens in the direction from the compression space in front of the pneumatic piston to the mold cavities (Bulg. Pat. No. 21 077). This device has the disadvantage that the usable stroke is shortened due to the installation of an additional element, namely a pneumatic cylinder with piston between the plunger and the die, that the die is unsafe during operation due to its movable connection with the plunger and that the mold must first be closed before the gas can be compressed.
Eine andere bekannte Vorrichtung zum Preßgießen unter Anwendung eines erhöhten Gasdrucks hat eine spezialisierte hydraulische Presse mit separaten Einrichtungen für das Schließen der Preßform und für das Pressen. Die Vorrich- tung ist mit einem unabhängigen hydro-pneumatischen Multi- plikator versehen, der im Preßkolben angeordnet ist und mittels entsprechender Absperrelemente mit einem Gasbe- hälter und mit dem Preßformhohlraum verbunden ist. Nach dem Schließen der Preßform erfolgt auf besonderen Befehl das Betätigen des Multiplikators zur Erhöhung des Drucks des Gases im Preßformhohlraum bis auf den erforderlichen Wert.Another known device for die casting using an increased gas pressure has a specialized hydraulic press with separate devices for closing the die and for pressing. The Vorrich- un t g is provided with an independent hydro-pneumatic multi p l ikator, which is arranged in the plunger and by means of respective shut-off elements h older with a Gasbe- and is connected to the die cavity. After the mold has been closed, the multiplier is operated on a special command to increase the pressure of the gas in the mold cavity to the required value.
Diese Vorrichtung hat den Nachteil, daß sie sehr kompli- ziert gebaut ist und die Anwendung eines hohen Gasdrucks unmittelbar nach dem Schließen der Preßform nicht zuläßt.This device has the disadvantage that it very compli - is built ert zi and does not permit the application of a high gas pressure immediately after closing the mold.
Der Erfindung liegt die Aufgabe zugrunde, die Vorrichtung der eingangs genannten Art so auszubilden, daß das Komprimieren des Gases automatisch während des Leerhubs der Presse erfolgen und ein hoher Gasdruck auf die erstarrende Schmelze unmittelbar nach dem Schließen der Preßform ausgeübt werden kann.The invention has for its object to design the device of the type mentioned so that the compression of the gas take place automatically during the empty stroke of the press and a high gas pressure can be exerted on the solidifying melt immediately after closing the mold.
Diese Aufgabe wird bei der Vorrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß in der Kolbenstange eine Kammer ausgebildet ist, die bis zu einem bestimmten Niveau mit Betriebsflüssigkeit vom hydraulischen System der Presse gefüllt ist. Der untere Teil dieser Kammer ist mit dem Raum des Preßzylinders unterhalb des Kolbens verbunden. Dieser Raum ist seinerseits mit dem hydraulischen System der Presse über ein Absperrelement verbunden. Der obere Teil der Kammer ist gleichzeitig über ein.Rückschlagventil mit dem Gasbehälter und über ein Absperrventil mit dem Preßformhohlraum verbunden. Der Preßformhohlraum ist seinerseits über ein anderes Absperrventil mit der Atmosphäre verbunden.This object is achieved in the device of the type mentioned in the invention in that a chamber is formed in the piston rod, which is filled to a certain level with operating fluid from the hydraulic system of the press. The lower part of this chamber is with the space of the press cylinder connected below the piston. This space is in turn connected to the hydraulic system of the press via a shut-off element. The upper part of the chamber is connected to the gas container via a check valve and to the mold cavity via a shut-off valve. The mold cavity is in turn connected to the atmosphere via another shut-off valve.
Die erfindungsgemäße Vorrichtung hat den Vorteil, daß die Entwicklung von Systemen für das Komprimieren des Gases in jeder Preßform entfällt und ein maximaler Gasdruck unmittelbar nach dem Schließen der Preßform ausgeübt werden kann.The device according to the invention has the advantage that the development of systems for compressing the gas in each mold is eliminated and a maximum gas pressure can be exerted immediately after the mold is closed.
Vorteilhafterweise kann zwischen der Betriebsflüssigkeit und dem Gas in der Kammer eine bewegliche Trennwand angeordnet sein.A movable partition can advantageously be arranged in the chamber between the operating liquid and the gas.
Anhand der Zeichnungen wird die Erfindung beispielsweise näher erläutert. Es zeigen:
- Fig. 1 eine erste Ausführungsform der Vorrichtung im Längsschnitt;
- Fig. 2 und
- Fig. 3 in Längsschnitten eine zweite und dritte Ausführungsform der Vorrichtung.
- Figure 1 shows a first embodiment of the device in longitudinal section.
- Fig. 2 and
- Fig. 3 in longitudinal sections a second and third embodiment of the device.
Die Vorrichtung besteht aus einem Preßzylinder 1 mit einem darin angeordneten Preßkolben 2, der eine Kolbenstange 3 hat. An der Kolbenstange 3 sind eine Preßplatte 14 und eine Preßform 15 befestigt. Der Kolben 2 und der Zylinder 1 sind untereinander mittels ringförmiger Dichtungselemente 6 abgedichtet. Die Kolbenstange 3 und der Zylinder 1 sind durch Dichtungselemente 12 abgedichtet.The device consists of a
Der Raum 4 oberhalb des Kolbens 2 ist mittels einer Rohrleitung 5 mit dem hydraulischen System der Presse verbunden. Der Raum 8 des Preßzylinders 1 unterhalb des Kolbens 2 ist über ein Absperrelement 10 mit dem hydraulischen System der Presse verbunden. In der Kolbenstange 3 ist eine Kammer 9 ausgebildet, die bis zu einem bestimmten Niveau mit Betriebsflüssigkeit 13 aus dem hydraulischen System der Presse gefüllt ist._ Der übrige Teil der Kammer 9 ist mit Gas 24 gefüllt. Der untere Teil der Kammer 9 ist über ein Rohr 11 und einen Kanal 7 mit dem Raum 8 unterhalb des Kolbens 2 verbunden. Der obere Teil der Kammer 9 ist über ein Rohr 23 gleichzeitig über ein Rückschlagventil 21 mit dem Gasbehälter 22, über ein Absperrventil 18 mit dem Hohlraum 16 der Preßform 15 und über ein regulierbares Rückschlagventil 19 mit der Atmosphäre verbunden. Der Hohlraum 16 der Preßform 15 ist seinerseits über ein Absperrventil 17 mit der Atmosphäre verbunden. Die Kammer 9 ist mit einem Manometer 20 für die Kontrolle des Gasdrucks verbunden.The
Die Vorrichtung arbeitet folgendermaßen:
- In der Ausgangsstellung sind das
Absperrelement 10 und dieAbsperrventile 17 und 18 geschlossen. Nach dem Erzeugen eines Drucks imRaum 4 desZylinders 1 beginnt die Abwärtsbewegung desKolbens 2, wobei die Betriebsflüssigkeit vonRaum 8 unterhalb des Kolbens durch denKanal 7 und dasRohr 11 in dieKammer 9 gefördert wird, wodurch eine Verminderung des Volumens bzw. eine Erhöhung des Drucks des dortbefindlichen Gases 24 hervorgerufen wird. Dieser Vorgang dauert fort,bis der Druck in derKammer 9 und imRaum 8 unterhalb des Kolbens den durch die Einstellung desregulierbaren Rückschlagventils 19 bestimmten Wert erreicht. Bei der weiteren Abwärtsbewegung desKolbens 2 wird der Druck nicht erhöht, da ein Teil desGases 24 durch dasSicherheitsventil 19 in die Atmosphäre ausgelassen wird. Nach dem Schließen der Preßform wird durch Öffnen desAbsperrventils 18 Druckgas in denHohlraum 16 eingeführt.
- In the starting position, the shut-off
element 10 and the shut-off 17 and 18 are closed. After a pressure has been generated in thevalves chamber 4 of thecylinder 1, thepiston 2 begins to move downwards, the operating fluid being conveyed from thechamber 8 below the piston through thechannel 7 and thepipe 11 into thechamber 9, thereby reducing the volume or Increasing the pressure of thegas 24 located there is caused. This process continues until the pressure in thechamber 9 and in thespace 8 below the piston reaches the value determined by the adjustment of theadjustable check valve 19. During the further downward movement of thepiston 2, the pressure is not increased, since part of thegas 24 is released into the atmosphere through thesafety valve 19. After the mold has been closed, compressed gas is introduced into thecavity 16 by opening the shut-offvalve 18.
Nach dem Erstarren des Preßteils in der Preßform wird das Ventil 18 geschlossen. Das Ventil 17 für das Auslassen des in der Preßform übriggebliebenen Gases in die Atmosphäre wird geöffnet. Es wird ein Befehl für den Rückwärtshub des Preßkolbens gegeben, d.h. der Druck im Raum 4 wird abgebaut, indem die Rohrleitung 5 mit dem Behälter der Presse verbunden wird. Zuerst bewegt sich der Kolben zusammen mit der Preßform 15 aufwärts unter der Wirkung des Drucks des Gases in der Kammer 9, wobei die Betriebsflüssigkeit 13 zurück in den Raum 8 unterhalb des Kolbens läuft. Nach dem Ausgleich des Drucks in der Kammer 9 und im Gasbehälter 22 erfolgt die weitere Abwärtsbewegung des Kolbens 2, wobei eine zusätzliche Gasmenge vom Gasbehälter 22 durch das Rückschlagventil 21 in die Kammer 9 strömt, wodurch die Vorrichtung in die Ausgangsstellung zurückkommt.After solidification of the pressed part in the mold the
Wenn das Absperrelement 10 geöffnet und die Verbindung zwischen der Kammer 9 und dem Gasbehälter 22 unterbrochen wird, arbeitet die erfindungsgemäße Vorrichtung als normale hydraulische Presse.When the shut-off
Bei der zweiten Ausführungsform von Fig. 2 ist in der Kammer 9 zwischen der Betriebsflüssigkeit 13 und dem Gas 24 eine bewegliche Trennwand 25 angeordnet, die als schwebender Kolben ausgeführt ist, der an der Wand der Kammer 9 mittels ringförmiger Dichtungselemente 26 abgedichtet ist. Auf diese Weise wird der direkte Kontakt zwischen Gas und Betriebsflüssigkeit vermieden und die Gefahr einer eventuellen Wechselwirkung beseitigt.In the second embodiment of Fig. 2, a
In der dritten Ausführungsform von Fig. 3 ist die bewegliche Trennwand als eine elastische Membrane 27 ausgeführt, die fest an der Kammer 9 befestigt ist.In the third embodiment of Fig. 3, the movable partition is designed as an
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81102472T ATE4967T1 (en) | 1980-04-02 | 1981-04-01 | DEVICE FOR PRESSURE CASTING OF METALS AND ALLOYS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG8047207A BG31832A1 (en) | 1980-04-02 | 1980-04-02 | Method for liquid or semi- liquid stamping |
BG47207/80 | 1980-04-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0037125A1 true EP0037125A1 (en) | 1981-10-07 |
EP0037125B1 EP0037125B1 (en) | 1983-10-12 |
Family
ID=3907300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81102472A Expired EP0037125B1 (en) | 1980-04-02 | 1981-04-01 | Arrangement for die casting metals and alloys |
Country Status (10)
Country | Link |
---|---|
US (1) | US4393916A (en) |
EP (1) | EP0037125B1 (en) |
JP (1) | JPS5717365A (en) |
AT (1) | ATE4967T1 (en) |
BG (1) | BG31832A1 (en) |
CS (1) | CS231982B2 (en) |
DD (1) | DD160894A5 (en) |
DE (1) | DE3161158D1 (en) |
IN (1) | IN154994B (en) |
SU (1) | SU1150054A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535231A1 (en) * | 1982-10-27 | 1984-05-04 | Inst Po Metalloznanie I Tekno | Pneumatic piston method for casting metals and other materials, and equipment for carrying out the said method. |
CN104942261A (en) * | 2014-03-25 | 2015-09-30 | 苏州慧驰轻合金精密成型科技有限公司 | Novel piston extrusion casting machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS607211A (en) * | 1983-06-24 | 1985-01-16 | Nec Corp | Differential amplifier circuit |
JPS60160209A (en) * | 1984-01-31 | 1985-08-21 | Fujitsu Ltd | Fet differential amplifier circuit |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2010181B2 (en) * | 1969-03-04 | 1971-06-09 | PRESS MECHANISM IN DIE CASTING MACHINES WITH HYDRAULIC DRIVE | |
DE1583631B2 (en) * | 1967-11-10 | 1975-03-20 | Badische Maschinenfabrik Gmbh, 7500 Karlsruhe | Press-in device for hydraulically operated die casting machines |
DE2355594A1 (en) * | 1973-11-07 | 1975-05-15 | Valentin Emmerich | Pressure casting machine control - has high pressure booster with stepped piston for finishing pressure phase accumulator |
DE2450805B2 (en) * | 1973-10-29 | 1976-12-30 | Societe de Vente de T Aluminium Pechiney, Paris | DIE CASTING PROCESS FOR NEON METALS AND NF ALLOYS AND DEVICE FOR ITS IMPLEMENTATION |
DE2747066B1 (en) * | 1977-10-20 | 1979-03-15 | Weingarten Ag Maschf | Device for setting the plunger speeds and pressures in die casting machines with a three-phase system, in particular in cold chamber die casting machines |
DE2854075B1 (en) * | 1978-12-14 | 1980-01-17 | Weingarten Ag Maschf | Die casting machine with a press piston which can be displaced in a press cylinder and a pressure multiplier for generating an increased pressure in the press cylinder work space towards the end of the working stroke of the press piston |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH607755A5 (en) * | 1974-08-30 | 1978-10-31 | Inst Po Metalloznanie I Tekno | |
US3960201A (en) * | 1974-12-13 | 1976-06-01 | Societe De Vente De L'aluminium Pechiney | Injection device for molding machines |
JPS5852743B2 (en) * | 1976-02-04 | 1983-11-25 | トヨタ自動車株式会社 | Molten metal forging mold equipment |
US4154288A (en) * | 1977-11-02 | 1979-05-15 | Arrow-Acme Corporation | Injection molding machine having swivel shot tip assembly |
CH635255A5 (en) * | 1978-07-19 | 1983-03-31 | Buehler Ag Geb | DIE CASTING MACHINE. |
US4334575A (en) * | 1980-03-18 | 1982-06-15 | Nippon Light Metal Co., Ltd. | Method for cooling a plunger tip in a die casting machine of the cold chamber type and apparatus therefor |
-
1980
- 1980-04-02 BG BG8047207A patent/BG31832A1/en unknown
-
1981
- 1981-03-30 SU SU817771727A patent/SU1150054A1/en active
- 1981-03-31 CS CS812395A patent/CS231982B2/en unknown
- 1981-04-01 EP EP81102472A patent/EP0037125B1/en not_active Expired
- 1981-04-01 AT AT81102472T patent/ATE4967T1/en not_active IP Right Cessation
- 1981-04-01 DE DE8181102472T patent/DE3161158D1/en not_active Expired
- 1981-04-02 US US06/250,289 patent/US4393916A/en not_active Expired - Fee Related
- 1981-04-02 DD DD81228894A patent/DD160894A5/en not_active IP Right Cessation
- 1981-04-02 JP JP4850881A patent/JPS5717365A/en active Pending
- 1981-04-06 IN IN379/CAL/81A patent/IN154994B/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1583631B2 (en) * | 1967-11-10 | 1975-03-20 | Badische Maschinenfabrik Gmbh, 7500 Karlsruhe | Press-in device for hydraulically operated die casting machines |
DE2010181B2 (en) * | 1969-03-04 | 1971-06-09 | PRESS MECHANISM IN DIE CASTING MACHINES WITH HYDRAULIC DRIVE | |
DE2450805B2 (en) * | 1973-10-29 | 1976-12-30 | Societe de Vente de T Aluminium Pechiney, Paris | DIE CASTING PROCESS FOR NEON METALS AND NF ALLOYS AND DEVICE FOR ITS IMPLEMENTATION |
DE2355594A1 (en) * | 1973-11-07 | 1975-05-15 | Valentin Emmerich | Pressure casting machine control - has high pressure booster with stepped piston for finishing pressure phase accumulator |
DE2747066B1 (en) * | 1977-10-20 | 1979-03-15 | Weingarten Ag Maschf | Device for setting the plunger speeds and pressures in die casting machines with a three-phase system, in particular in cold chamber die casting machines |
DE2854075B1 (en) * | 1978-12-14 | 1980-01-17 | Weingarten Ag Maschf | Die casting machine with a press piston which can be displaced in a press cylinder and a pressure multiplier for generating an increased pressure in the press cylinder work space towards the end of the working stroke of the press piston |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535231A1 (en) * | 1982-10-27 | 1984-05-04 | Inst Po Metalloznanie I Tekno | Pneumatic piston method for casting metals and other materials, and equipment for carrying out the said method. |
CN104942261A (en) * | 2014-03-25 | 2015-09-30 | 苏州慧驰轻合金精密成型科技有限公司 | Novel piston extrusion casting machine |
Also Published As
Publication number | Publication date |
---|---|
SU1150054A1 (en) | 1985-04-15 |
EP0037125B1 (en) | 1983-10-12 |
CS231982B2 (en) | 1985-01-16 |
IN154994B (en) | 1984-12-22 |
ATE4967T1 (en) | 1983-10-15 |
JPS5717365A (en) | 1982-01-29 |
US4393916A (en) | 1983-07-19 |
CS239581A2 (en) | 1984-01-16 |
DE3161158D1 (en) | 1983-11-17 |
BG31832A1 (en) | 1982-04-15 |
DD160894A5 (en) | 1984-06-13 |
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