DE102008055536A1 - Method for operating a drive piston of a die casting machine and device for carrying out the method - Google Patents
Method for operating a drive piston of a die casting machine and device for carrying out the method Download PDFInfo
- Publication number
- DE102008055536A1 DE102008055536A1 DE102008055536A DE102008055536A DE102008055536A1 DE 102008055536 A1 DE102008055536 A1 DE 102008055536A1 DE 102008055536 A DE102008055536 A DE 102008055536A DE 102008055536 A DE102008055536 A DE 102008055536A DE 102008055536 A1 DE102008055536 A1 DE 102008055536A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- piston
- hydraulic
- drive piston
- hydraulic 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004512 die casting Methods 0.000 title claims description 5
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 3
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Bei einem Verfahren zum Betreiben eines Antriebskolbens (4) in einem Antriebszylinder (5) für das Einspritzaggregat (1) einer Formmaschine wird im Zuge eines Einspritzzyklus dem Antriebszylinder (5) in einer vorbestimmten Phase des Einspritzzyklus an einer Seite (12) des Antriebskolbens (4) Druckmedium von einem Multiplikatorkolben (15) zugeführt, dass eine Verbindungsleitung (10) den Ringraum (3) des Arbeitskolbens (1) mit dem Ringraum (7) des Druckübersetzers (5) und mit dem Kolbenraum (4) des Arbeitskolbens (1) verbindet und ein schaltbares Hydraulikventil (18') die Verbindungsleitung (10) zu einer hydraulischen Energiequelle (20) verbindet.In a method for operating a drive piston (4) in a drive cylinder (5) for the injection unit (1) of a molding machine, the drive cylinder (5) in a predetermined phase of the injection cycle on one side (12) of the drive piston (4 ) Pressure medium from a multiplier piston (15), that a connecting line (10) connects the annular space (3) of the working piston (1) with the annular space (7) of the pressure booster (5) and with the piston space (4) of the working piston (1) and a switchable hydraulic valve (18 ') connecting the connection line (10) to a hydraulic power source (20).
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Antriebkolbens einer Druckgiessmaschine.The The invention relates to a method for operating a drive piston a die casting machine.
Sowohl
bei Formmaschinen, Druckgiessmaschinen mit einem Giesskolben, Spritzgiessmaschinen
mit einer Schnecke oder einem Kolben als solches Einspritzaggregat
besteht, ein Problem in an sich einander widersprechenden Anforderungen.
Einerseits muss die Druckumschaltung relativ rasch erfolgen, anderseits
wird ein hoher, plötzlich auf die zu bewegenden Massen
einwirkender Druck zwangsläufig zu Schwingungsvorgängen
führen, die schwierig oder kaum zu beherrschen sind (siehe
Ein
anderes Problem bei der Verwendung eines Druckmultiplikators besteht
darin, dass seine Zuschaltung im Allgemeinen relativ rasch erfolgt,
was zu den oben genannten Schwierigkeiten führt, und dass
eine ”Formgebung” für die sich ergebende Druckkurve
kaum möglich ist. Gerade moderne Technologien könnten
aber mit besser beherrschbaren Druckkurven besser und leichter ausgeführt
werden. Vorschläge, wie gemäss
Gemäss
Eine Leitung, welche den Ringraum des Antriebskolbens mit dem Ringraum des Druckübersetzers verbindet, ermöglicht mit dem Ringraumdruck des Antriebskolbens auch den Ringraumdruck des Druckübersetzers zu beeinflussen. Dadurch wird der Wirkungsbereich des Druckübersetzers stark erweitert, was den Kolbendruck des Antriebszylinders variiert. Zusammen ergibt sich eine maximale Beeinflussbarkeit der Kraftwirkung des Antriebszylinders am Ende des Arbeitshubs.A Line, which the annulus of the drive piston with the annulus connects the pressure intensifier, allows with the annulus pressure of the drive piston and the annulus pressure of the pressure booster to influence. This makes the scope of the pressure booster greatly expanded, which varies the piston pressure of the drive cylinder. Together, there is a maximum influenceability of the force effect of the drive cylinder at the end of the power stroke.
Der Druck im Ringraum des Antriebskolbens kann mittels eines Servoventils, eines Proportionalventils oder mittels einer fix zuschaltbaren Druckbeeinflussung variiert werden. Die Arbeitsweise dieser Verbindungsleitung kann mittels Schaltventile beeinflusst werden.Of the Pressure in the annular space of the drive piston can be achieved by means of a servo valve, a proportional valve or by means of a permanently switchable pressure control be varied. The operation of this connection line can be influenced by switching valves.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einem Verfahren und einer Vorrichtung nach dem Oberbegriff des Anspruchs 1 die Beherrschbarkeit des Druckverlaufes zu verbessern und insbesondere auch Schwingungen und Schwankungen zu vermeiden. Dies gelingt durch die Massnahmen nach dem Kennzeichen des Anspruchs 1.Of the Invention is therefore the object of a method and a device according to the preamble of claim 1, the controllability to improve the pressure curve and in particular also vibrations and to avoid fluctuations. This succeeds through the measures according to the characterizing part of claim 1.
Durch
eine geeignete Beschaltung der in
Die schaltbare hydraulische Verbindung der Leitung mit dem Kolbenraum des Antriebskolbens erlaubt den Antriebskolben in Differenzialschaltung zu betreiben. Dies führt zu einer nennenswerten Energieeinsparung während relativ langsamer Kolbenbewegungen.The Switchable hydraulic connection of the pipe to the piston chamber of the drive piston allows the drive piston in differential circuit to operate. This leads to a significant energy saving during relatively slow piston movements.
Eine schaltbare hydraulische Verbindung der Leitung mit einer hydraulischen Energiequelle erlaubt den Antriebskolben und auch den Druckübersetzer über diese Leitung wieder in Grundstellung zu fahren.A Switchable hydraulic connection of the pipe with a hydraulic Energy source allows the drive piston and the pressure intensifier via to drive this line back to basic position.
Eine proportionale Druckbeeinflussung zwischen einer hydraulischen Energiequelle und dieser Leitung erlaubt den Ringraumdruck sowohl des Antriebskolbens wie auch des Druckübersetzers zu beeinflussen.A proportional pressure control between a hydraulic energy source and this line allows the annulus pressure of both the drive piston as well as the pressure intensifier to influence.
Eine Kombination von zwei Stetigventilen erlaubt über diese Verbindungsleitung sowohl langsame und schnelle Bewegungen des Antriebskolbens als auch den Ringraumdruck von Antriebskolben und Druckübersetzer anforderungsgerecht zu beeinflussen. Dadurch können Hydraulikventile mit funktionsgerechter Nennweite eingesetzt werden, was deren dynamisches Verhalten stark verbessert. Das kleinere und damit schnellere 3-Wege-Stetigventil beeinflusst die Antriebskolbengeschwindigkeit in Differenzialschaltung. Das grössere 2-Wege-Stetigventil beeinflusst die schnelle Kolbenbewegung. Beiden Stetigventile zusammen bilden einen Druckteiler, wobei das kleinere und damit schnellere Ventil die Druckregelung übernimmt und das grössere Stetigventil den Basisvolumenstrom dieser hydraulischen Schaltung bestimmt.A Combination of two continuous valves allowed over this Connecting line both slow and fast movements of the drive piston as also the annulus pressure of drive piston and pressure booster to influence requirements. This allows hydraulic valves be used with functional nominal size, what their dynamic Behavior greatly improved. The smaller and thus faster 3-way continuous valve influences the drive piston speed in differential gear. The larger 2-way continuous valve influences the fast Piston movement. Both continuous valves together form a pressure divider, the smaller and thus faster valve takes over the pressure regulation and the larger continuous valve the base volume flow of this determined hydraulic circuit.
Ähnliche
Leitungen wie in der
Weitere Einzelheiten der Erfindung ergeben sich an Hand der nachfolgenden Beschreibung von in der Zeichnung schematisch dargestellten Ausführungsbeispielen. Es zeigen die:Further Details of the invention will become apparent from the following Description of embodiments schematically illustrated in the drawing. It show the:
Gemäss
Bevorzugt übernimmt
das Ventil
Abhängig
von dem durch wenigstens einen der Wandler
Während
also bei freigegebenem Druckakkumulator
Ferner
kann der im Raum
Obwohl
Proportionalventile
Die Steuerkanten können mechanisch verbunden oder unabhängig voneinander sein.The Control edges can be mechanically connected or independent be from each other.
Die
schaltbare hydraulische Verbindung der Leitung mit dem Kolbenraum
des Antriebskolbens
Eine
Kombination von zwei Stetigventilen
Die
Ventile
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - CH 668385 A [0002] - CH 668385 A [0002]
- - DE 2362482 A [0003] - DE 2362482 A [0003]
- - DE 19842830 A1 [0004, 0008, 0013, 0013, 0015] - DE 19842830 A1 [0004, 0008, 0013, 0013, 0015]
- - CH 486938 A [0013] CH 486938 A [0013]
- - CH 486939 [0013] - CH 486939 [0013]
- - DE 2165325 A [0013] - DE 2165325 A [0013]
- - DE 2017951 B [0013] - DE 2017951 B [0013]
- - DE 1804261 A [0013] - DE 1804261 A [0013]
- - GB 2198081 A [0013] - GB 2198081 A [0013]
Claims (13)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008055536A DE102008055536A1 (en) | 2008-12-17 | 2008-12-17 | Method for operating a drive piston of a die casting machine and device for carrying out the method |
JP2011541445A JP2012512032A (en) | 2008-12-17 | 2009-12-17 | Apparatus for die casting machine and method for operating working piston of die casting machine |
PCT/EP2009/067424 WO2010070053A1 (en) | 2008-12-17 | 2009-12-17 | Arrangement for a die casting machine and method for operating a drive piston of the die casting machine |
US13/140,185 US20110247777A1 (en) | 2008-12-17 | 2009-12-17 | Arrangement for a Die Casting Machine and Method for Operating a Drive Piston of the Die Casting Machine |
EP09795978A EP2384249A1 (en) | 2008-12-17 | 2009-12-17 | Arrangement for a die casting machine and method for operating a drive piston of the die casting machine |
CN2009801569407A CN102317007A (en) | 2008-12-17 | 2009-12-17 | Die casting machine disposes and is used to operate the method for the driven plunger of die casting machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008055536A DE102008055536A1 (en) | 2008-12-17 | 2008-12-17 | Method for operating a drive piston of a die casting machine and device for carrying out the method |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008055536A1 true DE102008055536A1 (en) | 2010-07-01 |
Family
ID=42077501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008055536A Withdrawn DE102008055536A1 (en) | 2008-12-17 | 2008-12-17 | Method for operating a drive piston of a die casting machine and device for carrying out the method |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110247777A1 (en) |
EP (1) | EP2384249A1 (en) |
JP (1) | JP2012512032A (en) |
CN (1) | CN102317007A (en) |
DE (1) | DE102008055536A1 (en) |
WO (1) | WO2010070053A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2295171B1 (en) * | 2009-09-15 | 2012-10-24 | Richard Oberle | Method and hydraulic switching assembly for operating a metal pressure casting assembly |
EP2620238A1 (en) | 2012-01-26 | 2013-07-31 | Bühler AG | Casting chamber for a die-casting machine |
WO2013110167A1 (en) * | 2012-01-26 | 2013-08-01 | Husky Injection Molding Systems Ltd. | Screw-moving assembly including screw-moving actuator and bias-adjustment mechanism |
US10207065B2 (en) | 2013-07-12 | 2019-02-19 | John H. Silva | Mouthpiece for inhalers |
TWM483166U (en) * | 2014-03-11 | 2014-08-01 | Shao-Yang Hung | Two-stage hydraulic pressurization device for in-mold functional components |
EP3140065A2 (en) * | 2014-05-06 | 2017-03-15 | Bühler AG | Method for operating a vacuum die-casting machine |
DE102015202273A1 (en) | 2015-02-09 | 2016-08-11 | Oskar Frech Gmbh + Co. Kg | Pressure translator device and die casting machine |
IT201600125927A1 (en) | 2016-12-13 | 2018-06-13 | Idra S R L | INJECTION GROUP FOR DIE-CASTING PLANTS |
IT201700014874A1 (en) * | 2017-02-10 | 2018-08-10 | Italpresse Ind Spa | PRESSOCOLATA MACHINE WITH VALVE DIAGNOSIS SYSTEM |
EP3421155B1 (en) * | 2017-06-28 | 2019-06-19 | Parker Hannifin Manufacturing Germany GmbH & Co. KG | Hydraulic circuit device for a cold chamber casting machine |
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 |
CN111319203A (en) * | 2018-12-17 | 2020-06-23 | 恩格尔机械(上海)有限公司 | Plastic molding machine and method for operating a plastic molding machine |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH486938A (en) | 1967-12-18 | 1970-03-15 | Vihorlat N P Snina Vyvojove St | Press mechanism of a press casting machine for metal |
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 |
DE1804261A1 (en) | 1968-06-18 | 1970-05-14 | Druckguss Heidenau Veb | Pressure system for pressure casting machine |
DE2017951B2 (en) | 1970-04-15 | 1971-04-15 | Wotan Werke GmbH, 4000 Dusseldorf | DIE CASTING MACHINE WITH MULTIPLIER |
DE7125834U (en) * | 1971-07-06 | 1971-12-23 | Idra Pressen Gmbh | DEVICE FOR PRODUCING CASTINGS OF CERTAIN TEXTURE ON COLD CHAMBER DIE CASTING MACHINES WITH A MULTIPLIER |
DE2165325A1 (en) | 1970-12-29 | 1972-07-27 | Toshiba Machine Co. Ltd., Tokio | Die casting machine / injection molding machine |
DE2362482A1 (en) | 1973-12-15 | 1975-06-19 | Idra Pressen Gmbh | DEVICE FOR CONTROLLING THE QUANTITY AND / OR PRESSURE OF THE PRESSURE MEDIUM ON DIE CASTING MACHINES, IN PARTICULAR FOR SEVERAL OIL-HYDRAULIC DRIVES |
GB2050889A (en) * | 1979-06-18 | 1981-01-14 | Buehler Ag Geb | Pressure die casting |
GB2198081A (en) | 1986-11-25 | 1988-06-08 | Rexroth Mannesmann Gmbh | Arrangement for producing high hydraulic pressures |
CH668385A5 (en) | 1985-10-24 | 1988-12-30 | Buehler Ag Geb | INJECTION UNIT FOR A CASTING MACHINE. |
US5258918A (en) * | 1990-05-18 | 1993-11-02 | Allen-Bradley Company, Inc. | Selectable control function injection molding controller |
US5365999A (en) * | 1992-06-05 | 1994-11-22 | Maschinenfabrik Mueller-Weingarten Ag | Method for the process control of a pressure diecasting machine and an apparatus for carrying out the method |
DE19842830A1 (en) | 1997-11-05 | 1999-05-06 | Buehler Ag | Method for operating a drive piston in the drive cylinder of an injection system |
DE102005034202A1 (en) * | 2004-10-15 | 2006-04-20 | Bosch Rexroth Aktiengesellschaft | Hydraulically operated casting unit |
WO2008086181A1 (en) * | 2007-01-05 | 2008-07-17 | Buhlerprince, Inc. | Die casting machine with reduced static injection pressure |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4636237B1 (en) * | 1968-05-16 | 1971-10-23 | ||
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 |
JPS5418218B2 (en) * | 1974-02-12 | 1979-07-05 | ||
JPS5128525A (en) * | 1974-09-04 | 1976-03-10 | Toshiba Machine Co Ltd | Daikasutoki no shashutsusochi |
US4147200A (en) * | 1977-07-11 | 1979-04-03 | Ford Motor Company | Method and apparatus for eliminating entrapped gas in die castings |
US4460324A (en) * | 1981-04-23 | 1984-07-17 | Prince Corporation | Shot cylinder controller for die casting machines and the like |
DE10143013A1 (en) * | 2001-09-03 | 2003-03-20 | Bosch Rexroth Ag | Hydraulic assembly for injection molding machine closure and injection, includes reference instrument controlling compensation of internal leakage |
DE102007007288A1 (en) * | 2007-02-14 | 2008-08-21 | Robert Bosch Gmbh | Drive device, in particular for a movable component on a Kunststoffspritzgieß- or a blow molding machine |
-
2008
- 2008-12-17 DE DE102008055536A patent/DE102008055536A1/en not_active Withdrawn
-
2009
- 2009-12-17 US US13/140,185 patent/US20110247777A1/en not_active Abandoned
- 2009-12-17 JP JP2011541445A patent/JP2012512032A/en active Pending
- 2009-12-17 WO PCT/EP2009/067424 patent/WO2010070053A1/en active Application Filing
- 2009-12-17 CN CN2009801569407A patent/CN102317007A/en active Pending
- 2009-12-17 EP EP09795978A patent/EP2384249A1/en not_active Withdrawn
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH486938A (en) | 1967-12-18 | 1970-03-15 | Vihorlat N P Snina Vyvojove St | Press mechanism of a press casting machine for metal |
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 |
DE1804261A1 (en) | 1968-06-18 | 1970-05-14 | Druckguss Heidenau Veb | Pressure system for pressure casting machine |
DE2017951B2 (en) | 1970-04-15 | 1971-04-15 | Wotan Werke GmbH, 4000 Dusseldorf | DIE CASTING MACHINE WITH MULTIPLIER |
DE2165325A1 (en) | 1970-12-29 | 1972-07-27 | Toshiba Machine Co. Ltd., Tokio | Die casting machine / injection molding machine |
DE7125834U (en) * | 1971-07-06 | 1971-12-23 | Idra Pressen Gmbh | DEVICE FOR PRODUCING CASTINGS OF CERTAIN TEXTURE ON COLD CHAMBER DIE CASTING MACHINES WITH A MULTIPLIER |
DE2362482A1 (en) | 1973-12-15 | 1975-06-19 | Idra Pressen Gmbh | DEVICE FOR CONTROLLING THE QUANTITY AND / OR PRESSURE OF THE PRESSURE MEDIUM ON DIE CASTING MACHINES, IN PARTICULAR FOR SEVERAL OIL-HYDRAULIC DRIVES |
GB2050889A (en) * | 1979-06-18 | 1981-01-14 | Buehler Ag Geb | Pressure die casting |
CH668385A5 (en) | 1985-10-24 | 1988-12-30 | Buehler Ag Geb | INJECTION UNIT FOR A CASTING MACHINE. |
GB2198081A (en) | 1986-11-25 | 1988-06-08 | Rexroth Mannesmann Gmbh | Arrangement for producing high hydraulic pressures |
US5258918A (en) * | 1990-05-18 | 1993-11-02 | Allen-Bradley Company, Inc. | Selectable control function injection molding controller |
US5365999A (en) * | 1992-06-05 | 1994-11-22 | Maschinenfabrik Mueller-Weingarten Ag | Method for the process control of a pressure diecasting machine and an apparatus for carrying out the method |
DE19842830A1 (en) | 1997-11-05 | 1999-05-06 | Buehler Ag | Method for operating a drive piston in the drive cylinder of an injection system |
DE102005034202A1 (en) * | 2004-10-15 | 2006-04-20 | Bosch Rexroth Aktiengesellschaft | Hydraulically operated casting unit |
WO2008086181A1 (en) * | 2007-01-05 | 2008-07-17 | Buhlerprince, Inc. | Die casting machine with reduced static injection pressure |
Also Published As
Publication number | Publication date |
---|---|
EP2384249A1 (en) | 2011-11-09 |
US20110247777A1 (en) | 2011-10-13 |
JP2012512032A (en) | 2012-05-31 |
CN102317007A (en) | 2012-01-11 |
WO2010070053A1 (en) | 2010-06-24 |
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