EP3053672B1 - Die casting of suspension struts - Google Patents

Die casting of suspension struts Download PDF

Info

Publication number
EP3053672B1
EP3053672B1 EP15153797.4A EP15153797A EP3053672B1 EP 3053672 B1 EP3053672 B1 EP 3053672B1 EP 15153797 A EP15153797 A EP 15153797A EP 3053672 B1 EP3053672 B1 EP 3053672B1
Authority
EP
European Patent Office
Prior art keywords
casting
die casting
chamber
sprue
suspension struts
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.)
Active
Application number
EP15153797.4A
Other languages
German (de)
French (fr)
Other versions
EP3053672A1 (en
Inventor
Manfred Winkler
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.)
Druckguss Service Deutschland GmbH
Original Assignee
Druckguss Service Deutschland GmbH
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 Druckguss Service Deutschland GmbH filed Critical Druckguss Service Deutschland GmbH
Priority to EP15153797.4A priority Critical patent/EP3053672B1/en
Publication of EP3053672A1 publication Critical patent/EP3053672A1/en
Application granted granted Critical
Publication of EP3053672B1 publication Critical patent/EP3053672B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B22D17/2076—Cutting-off equipment for sprues or ingates
    • 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
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/12—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with vertical press motion
    • 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
    • B22D17/2069—Exerting after-pressure on the moulding material

Definitions

  • the invention relates to a pressure casting of strut braces, wherein a flowable casting material is pressed into two back-to-back opposing cavities, wherein the cavities are formed by two mold parts, each forming a mold, wherein the casting chamber is arranged between the molds.
  • 3-plate tools are known, although they have a central sprue, there is still the disadvantage of a long casting run, which leads to long cycle times and tools that are expensive to manufacture.
  • the DE 10 2012 107363 A1 discloses such a die casting tool for horizontal die casting machines with a complex sprue distribution channel system. This leads to a large amount of residual material, which must be remelted as recycling material. Another disadvantage is also that with a high amount of circulation material, as in this process, this additional amount of material must be heated, so energy must be supplied, the material is not used as a casting but it must be melted down again , So much energy is supplied or too much material heated, which in turn causes high costs for material that does not flow into the casting.
  • the casting tools for a vertical die casting machine can be made simpler and cheaper if it is possible to dispense with such a complex sprue distribution channel system.
  • a die casting machine with vertically arranged casting chamber is off DE 750697 C known.
  • the counter-piston is retracted from its sprue-closing position even before the application of the pressing force by the casting drive piston.
  • the object is achieved according to the invention in that the liquid casting material is pressed vertically by means of the casting drive piston.
  • the casting chamber thus runs vertically.
  • the molds are arranged on both sides of the casting chamber and are each formed by two mold parts which form the cavities into which the flowable casting material is pressed by the casting chamber via the sprue.
  • An advantage of this design is that the degree of filling of the casting chamber is 100%. This means that the chamber can be completely filled with the casting material without any air bubbles in it when the casting drive piston presses the casting material into the cavities. In a horizontal course of the casting chamber, as for example DE 10 2012 107 363 A1 is known, this is not possible, whereby a poorer quality of the cast strut braces can arise.
  • the casting chamber is filled with flowable casting material while the molds or cavities are still open. This is made possible by the fact that the counter-piston covers the sprue, whereby no casting material can flow out. This results in an increase in the efficiency of the casting process, since the strut brackets can be formed and at the same time the casting chamber can be filled again with the casting material whereby the die-casting machine is quickly available again for the next shot. This is an essential point of such process optimization and ensures economical production of strut braces.
  • Another advantage of this pressure casting of strut braces is that the molds can be opened before the complete solidification of the press residue in the casting chamber. This in turn optimizes the process flow and reduces the cycle time again.
  • the counter-piston is raised immediately after the make-up, preferably within less than 1 second after the make-up, the counter-piston moves up to shearing off the press residue. This then allows immediate opening of the molds and molding.
  • the press residue in the casting chamber is sheared off by means of an opposing piston. This is a simple and quick process in which the counter-piston in the casting chamber goes up, the press residue is sheared from the gate.
  • Another advantage is that the flowable casting material is pressed through a central sprue into the cavities of the molds, each mold having its own sprue.
  • the sprue is arranged centrally in relation to the suspension strut.
  • long-branched distribution channels are unnecessary for the flowable casting material.
  • the casting system is very short and thus optimizes the process additionally.
  • the sprue is located at the strut support in the central middle part of the built-in state, the cathedral bearing receives. This means that this area is highly stressed and requires high rigidity and strength.
  • the pistons are operated hydraulically.
  • the sequence of the pistons is controlled process-optimized, whereby a time-optimized sequence or a minimal amount of time for the die-casting of strut brackets is needed, which in turn has a cost reduction.
  • Fig. 1 shows a longitudinal section through a vertical die casting device 1, which is used for die casting of strut props.
  • the casting chamber 2 is vertical.
  • a casting drive piston 3 and also an opposing piston 4 are arranged.
  • the casting drive piston 3 By means of the casting drive piston 3, the flowable casting material in the casting chamber 2 is pressed via the sprue 9 and the channels 10 into the cavities 5.
  • the cavities 5 are each produced by means of two mold parts 6a, 6b which together form a mold 7. Due to the fact that the sprue 9 of the strut supports 8 is arranged centrally in the mold 7 or also centrally relative to the cavities 5, it is possible to dispense with long and branched distribution channels. Due to the vertical orientation of the casting chamber 2, a 100% filling with liquid casting material is possible.
  • the molds 7 are arranged on both sides of the casting chamber 2.
  • the cavities 5 are arranged back to back with intermediate casting chamber 2.
  • the flowable casting material can already be filled into the casting chamber 2 while the molds 7 or mold parts 6a, 6b are still open, wherein one of the mold parts 6b is preferably fixed and the other movable 6a or movable, so that the molds can be opened and the Strut brackets 8 can be formed. This is possible because the opposing piston 4 blocks the sprue 9 and thus prevents the flow of the liquid casting material into the cavities 5.
  • the mold parts 6a, 6b can preferably be opened and closed by horizontal displacement in order to remove the cast strut supports 8.
  • only one of the mold parts 6a is movable in each case and the other 6b to be fixed.
  • the molds 7 to open before the press residue is completely solidified in the casting chamber 2 because the counter-piston 4 is moved up to shear the press rest
  • the opposing piston 4 can even be started up when the make-up of the casting is completed and the press rest is not yet solidified due to its mass. This shortens the cycle time significantly.
  • the counter-piston 4 is raised to shear the press rest so that a molding is possible at all.
  • Fig. 2 shows a schematic representation of the casting chamber 2 with the cast strut supports 8.
  • the casting drive piston 3 presses the liquid casting material into the cavities 5 which form the negative of the suspension struts 8. It is easy to see that the flowable casting material is pressed into the cavities 5 only via a sprue 9 and only via one channel 10 each.
  • the counter-piston 4 serves on the one hand the shearing off of the pressing residue, as well as the closing of the channels 10 and the sprues 9, whereby, as mentioned above, a filling of the casting chamber 2 and a demolding of the molds 7 can take place in parallel or at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

Die Erfindung betrifft ein Druckgiessen von Federbeinstützen, wobei ein fliessfähiger Giesswerkstoff in zwei sich Rücken an Rücken gegenüberliegende Kavitäten gepresst wird, wobei die Kavitäten durch jeweils zwei Formteile, die jeweils eine Form bilden, gebildet werden, wobei die Giesskammer zwischen den Formen angeordnet ist.The invention relates to a pressure casting of strut braces, wherein a flowable casting material is pressed into two back-to-back opposing cavities, wherein the cavities are formed by two mold parts, each forming a mold, wherein the casting chamber is arranged between the molds.

Aus dem Stand der Technik ist das Druckgiessen von Federbeinstützen bekannt, dazu werden in der Regel horizontale Druckgussmaschinen eingesetzt, da diese sehr variabel sind und sich für viele Arten und Grössen von Gussteilen eignen und auch Gussteile mit hohem Teilegewicht zulassen, welche eine hohe Giessleistung erfordert.The pressure casting of strut brackets is known from the prior art, horizontal die casting machines are usually used because they are very variable and suitable for many types and sizes of castings and also allow castings with high part weight, which requires a high casting performance.

Nachteilig beim Einsatz von horizontalen Druckgussmaschinen, insbesondere für die Herstellung von Federbeinstützen, sind die langen Angusssysteme, da bei horizontalen Druckgussmaschinen ein Anguss vorliegt, der sich dann zu den zu füllenden Kavitäten hin verzweigt. Wobei bei horizontalen Druckgussmaschinen 3-Platten-Werkzeuge bekannt sind, diese zwar einen zentralen Anguss aufweisen, jedoch besteht dort der Nachteil eines langen Giesslaufs immer noch, der zu langen Taktzeiten führt und zu Werkzeugen die aufwendig in der Herstellung sind.A disadvantage of the use of horizontal die casting machines, especially for the production of strut props, are the long Angusssysteme, since there is a sprue in horizontal die casting machines, which then branches to the cavities to be filled out. Where in horizontal die casting machines 3-plate tools are known, although they have a central sprue, there is still the disadvantage of a long casting run, which leads to long cycle times and tools that are expensive to manufacture.

Die DE 10 2012 107363 A1 offenbart ein solches Druckgusswerkzeug für horizontale Druckgussmaschinen mit einem komplexen Angussverteilkanalsystem. Dies führt zu einer grossen Menge an Restmaterial, das als Kreislaufmaterial wieder eingeschmolzen werden muss. Ein weiterer Nachteil ist auch, dass bei einer hohen Menge an Kreislaufmaterial, wie es in diesem Verfahren vorliegt, diese zusätzliche Menge von Material erwärmt werden muss, also Energie zugeführt werden muss, das Material jedoch nicht als Gussteil weiterverwendet wird sondern es wieder eingeschmolzen werden muss. So wird viel Energie zugeführt bzw. zu viel Material erwärmt, das wiederum verursacht hohe Kosten für Material das nicht in das Gussteil fliesst.The DE 10 2012 107363 A1 discloses such a die casting tool for horizontal die casting machines with a complex sprue distribution channel system. This leads to a large amount of residual material, which must be remelted as recycling material. Another disadvantage is also that with a high amount of circulation material, as in this process, this additional amount of material must be heated, so energy must be supplied, the material is not used as a casting but it must be melted down again , So much energy is supplied or too much material heated, which in turn causes high costs for material that does not flow into the casting.

Zudem können die Gusswerkzeuge für eine vertikale Druckgussmaschine einfacher und günstiger hergestellt werden, wenn auf ein solch aufwendiges Angussverteilkanalsystem verzichtet werden kann.In addition, the casting tools for a vertical die casting machine can be made simpler and cheaper if it is possible to dispense with such a complex sprue distribution channel system.

Druckgussmaschinen, bei denen die Giesskammer vertikal angeordnet ist, sind aus dem Stand der Technik bekannt. Die US 1 717 254 offenbart eine solche. In der Regel werden sie für kleinere und einfachere Teile eingesetzt, da sie beim Teilegewicht von ihrer Kapazität begrenzt sind und deshalb auch nur sehr eingeschränkt variabel einsetzbar.Die casting machines in which the casting chamber is arranged vertically are known from the prior art. The US 1,717,254 discloses such. In general, they are used for smaller and simpler parts, since they are limited in part weight of their capacity and therefore only very variable variable use.

Eine Druckgussmaschine mit vertikal angeordneter Giesskammer ist aus DE 750697 C bekannt. Bei der dort beschriebenen Maschine wird der Gegenkolben schon vor dem Aufbringen der Presskraft durch den Giessantriebskolben aus seiner den Anguss verschliessenden Stellung zurückgefahren.A die casting machine with vertically arranged casting chamber is off DE 750697 C known. In the machine described there, the counter-piston is retracted from its sprue-closing position even before the application of the pressing force by the casting drive piston.

Es ist Aufgabe der Erfindung, ein Druckgiessen von Federbeinstützen vorzuschlagen, das wirtschaftlicher ist als das Druckgiessen von Federbeinstützen mittels horizontaler Druckgussmaschinen, insbesondere durch Prozessoptimierung sowie dass eine höhere Materialqualität der Gussteile erreicht werden soll.It is an object of the invention to provide a pressure casting of strut props, which is more economical than the die casting of strut supports by means of horizontal die casting machines, in particular by process optimization and that a higher material quality of the castings to be achieved.

Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass der flüssige Giesswerkstoff mittels des Giessantriebskolbens vertikal gepresst wird. Die Giesskammer verläuft somit vertikal. Die Formen sind beidseitig der Giesskammer angeordnet und werden jeweils durch zwei Formteile gebildet, die die Kavitäten bilden, in die der fliessfähige Giesswerkstoff von der Giesskammer über den Anguss gepresst wird.The object is achieved according to the invention in that the liquid casting material is pressed vertically by means of the casting drive piston. The casting chamber thus runs vertically. The molds are arranged on both sides of the casting chamber and are each formed by two mold parts which form the cavities into which the flowable casting material is pressed by the casting chamber via the sprue.

Mittels des Giessantriebskolbens wird der Giesswerkstoff in der Giesskammer nach unten gepresst.By means of Giessantriebskolbens the casting material is pressed in the casting chamber down.

Vorteilhaft an dieser Bauform ist, dass der Füllgrad der Giesskammer 100 % ist. Das heisst, die Kammer kann komplett mit dem Giesswerkstoff gefüllt werden, ohne dass Lufteinschlüsse darin auftreten, wenn der Giessantriebskolben den Giesswerkstoff in die Kavitäten presst. Bei einem horizontalen Verlauf der Giesskammer, wie dies beispielsweise aus DE 10 2012 107 363 A1 bekannt ist, ist dies nicht möglich, wodurch eine schlechtere Qualität der gegossenen Federbeinstützen entstehen kann.An advantage of this design is that the degree of filling of the casting chamber is 100%. This means that the chamber can be completely filled with the casting material without any air bubbles in it when the casting drive piston presses the casting material into the cavities. In a horizontal course of the casting chamber, as for example DE 10 2012 107 363 A1 is known, this is not possible, whereby a poorer quality of the cast strut braces can arise.

Gemäß der Erfindung wird die Giesskammer mit fliessfähigem Giesswerkstoff gefüllt, während die Formen bzw. Kavitäten noch geöffnet sind. Das wird dadurch ermöglicht, dass der Gegenkolben den Anguss abdeckt, wodurch
kein Giesswerkstoff ausfliessen kann. Das hat eine Steigerung der Wirtschaftlichkeit des Giessprozesses zur Folge, da die Federbeinstützen ausgeformt werden können und gleichzeitig die Giesskammer bereits wieder mit dem Giesswerkstoff gefüllt werden kann wodurch die Druckgussmaschine schnell wieder für den nächsten Schuss zur Verfügung steht.
Dies ist ein wesentlicher Punkt einer solchen Prozessoptimierung und gewährleistet eine wirtschaftliche Herstellung der Federbeinstützen.According to the invention, the casting chamber is filled with flowable casting material while the molds or cavities are still open. This is made possible by the fact that the counter-piston covers the sprue, whereby
no casting material can flow out. This results in an increase in the efficiency of the casting process, since the strut brackets can be formed and at the same time the casting chamber can be filled again with the casting material whereby the die-casting machine is quickly available again for the next shot.
This is an essential point of such process optimization and ensures economical production of strut braces.

Ein weiterer Vorteil dieses Druckgiessens von Federbeinstützen besteht darin, dass die Formen bereits vor der kompletten Erstarrung des Pressrests in der Giesskammer geöffnet werden können. Dies wiederum optimiert den Ablauf des Prozesses zusätzlich und verkürzt die Zykluszeit nochmals.Another advantage of this pressure casting of strut braces is that the molds can be opened before the complete solidification of the press residue in the casting chamber. This in turn optimizes the process flow and reduces the cycle time again.

Der Gegenkolben wird unmittelbar nach der Nachspeisung hochgefahren, vorzugsweise innerhalb nicht einmal 1 Sekunde nach der Nachspeisung fährt der Gegenkolben zum Abscheren des Pressrests hoch. Dies ermöglicht dann ein sofortiges öffnen der Formen und ein Ausformen.The counter-piston is raised immediately after the make-up, preferably within less than 1 second after the make-up, the counter-piston moves up to shearing off the press residue. This then allows immediate opening of the molds and molding.

Der Pressrest in der Giesskammer wird mittels eines Gegenkolbens abgeschert. Dies ist ein einfacher und rascher Vorgang in dem der Gegenkolben in der Giesskammer hoch fährt, wird der Pressrest vom Anguss abgeschert.The press residue in the casting chamber is sheared off by means of an opposing piston. This is a simple and quick process in which the counter-piston in the casting chamber goes up, the press residue is sheared from the gate.

Ein weiterer Vorteil liegt darin, dass der fliessfähige Giesswerkstoff über einen zentralen Anguss in die Kavitäten der Formen gepresst wird, wobei jede Form ihren eigenen Anguss aufweist. Der Anguss ist zentral im Bezug zur Federbeinstütze angeordnet. Somit erübrigen sich lange verzweigte Verteilkanäle für den fliessfähigen Giesswerkstoff. Das Giesssystem fällt sehr kurz aus und optimiert so den Prozess zusätzlich.
Der Anguss befindet sich bei der Federbeinstütze im zentralen Mittelteil der im eingebauten Zustand das Domlager aufnimmt. Das heisst, dass dieser Bereich hochbeansprucht ist und eine hohe Steifigkeit und Festigkeit benötigt. Durch das Giessen der Federbeinstützen mittels des erfindungsgemässen Verfahren befinden sich der Anguss im zentralen Mittelteil und da sich zwangsläufig die besten Materialeigenschaften nahe am Anguss ergeben ist dieses Verfahren ideal zur Herstellung von Federbeinstützen.Another advantage is that the flowable casting material is pressed through a central sprue into the cavities of the molds, each mold having its own sprue. The sprue is arranged centrally in relation to the suspension strut. Thus, long-branched distribution channels are unnecessary for the flowable casting material. The casting system is very short and thus optimizes the process additionally.
The sprue is located at the strut support in the central middle part of the built-in state, the cathedral bearing receives. This means that this area is highly stressed and requires high rigidity and strength. By casting the suspension struts by means of the method according to the invention, the sprue is located in the central middle part and inevitably the best Material properties close to the sprue result in this method is ideal for the production of strut props.

Vorzugsweise werden die Kolben hydraulisch betrieben.Preferably, the pistons are operated hydraulically.

Der Ablauf der Kolben ist prozessoptimiert geregelt, wodurch ein zeitoptimierter Ablauf bzw. ein minimaler Zeitaufwand für das Druckgiessen von Federbeinstützen benötigt wird, was wiederum eine Kostenreduktion zur Folge hat.The sequence of the pistons is controlled process-optimized, whereby a time-optimized sequence or a minimal amount of time for the die-casting of strut brackets is needed, which in turn has a cost reduction.

Ein Ausführungsbeispiel der Erfindung wird anhand der Figuren beschrieben, wobei sich die Erfindung nicht nur auf das Ausführungsbeispiel beschränkt. Es zeigen:

Fig. 1
einen Längsschnitt durch eine vertikale Druckgiessvorrichtung und
Fig. 2
eine schematische Darstellung der Giesskammer mit dem Verlauf des Giesswerkstoffs bis hin zu den entstandenen Federbeinstützen.
An embodiment of the invention will be described with reference to the figures, wherein the invention is not limited to the embodiment. Show it:
Fig. 1
a longitudinal section through a vertical die casting and
Fig. 2
a schematic representation of the casting chamber with the course of the casting material up to the resulting strut braces.

Fig. 1 zeigt einen Längsschnitt durch eine vertikale Druckgiessvorrichtung 1, die zum Druckgiessen von Federbeinstützen dient. Die Giesskammer 2 verläuft vertikal. Darin sind ein Giessantriebskolben 3 sowie auch ein Gegenkolben 4 angeordnet. Mittels des Giessantriebskolbens 3 wird der fliessfähige Giesswerkstoff in der Giesskammer 2 über den Anguss 9 und die Kanäle 10 in die Kavitäten 5 gepresst. Die Kavitäten 5 werden jeweils mittels zweier Formteile 6a, 6b die zusammen eine Form 7 bilden, erzeugt. Dadurch, dass der Anguss 9 der Federbeinstützen 8 zentral in der Form 7 bzw. auch zentral gegenüber der den Kavitäten 5 angeordnet ist, kann auf lange und verzweigte Verteilkanäle verzichtet werden. Durch die vertikale Ausrichtung der Giesskammer 2 ist eine 100%-ige Füllung mit flüssigem Giesswerkstoff möglich. Das heisst, dass ein Füllgrad von 100% erreicht werden kann, wodurch Lufteinschlüsse vermieden werden können und die Qualität der Federbeinstützen 8 optimiert werden kann.
Die Formen 7 sind beidseitig der Giesskammer 2 angeordnet. Vorzugsweise sind die Kavitäten 5 Rücken an Rücken mit dazwischenliegender Giesskammer 2 angeordnet. Fig. 1 shows a longitudinal section through a vertical die casting device 1, which is used for die casting of strut props. The casting chamber 2 is vertical. Therein, a casting drive piston 3 and also an opposing piston 4 are arranged. By means of the casting drive piston 3, the flowable casting material in the casting chamber 2 is pressed via the sprue 9 and the channels 10 into the cavities 5. The cavities 5 are each produced by means of two mold parts 6a, 6b which together form a mold 7. Due to the fact that the sprue 9 of the strut supports 8 is arranged centrally in the mold 7 or also centrally relative to the cavities 5, it is possible to dispense with long and branched distribution channels. Due to the vertical orientation of the casting chamber 2, a 100% filling with liquid casting material is possible. This means that a filling level of 100% can be achieved, whereby air pockets can be avoided and the quality of strut brackets 8 can be optimized.
The molds 7 are arranged on both sides of the casting chamber 2. Preferably, the cavities 5 are arranged back to back with intermediate casting chamber 2.

Der fliessfähige Giesswerkstoff kann bereits in die Giesskammer 2 gefüllt werden während die Formen 7 bzw. Formteile 6a, 6bnoch geöffnet sind, wobei eines der Formteile 6b vorzugsweise feststehend ist und das andere beweglich 6a bzw. verfahrbar, wodurch sich so die Formen öffnen lassen und die Federbeinstützen 8 ausgeformt werden können. Dies ist dadurch möglich, da der Gegenkolben 4 den Anguss 9 versperrt und so das Abfliessen des flüssigen Giesswerkstoffs in die Kavitäten 5 verhindert.The flowable casting material can already be filled into the casting chamber 2 while the molds 7 or mold parts 6a, 6b are still open, wherein one of the mold parts 6b is preferably fixed and the other movable 6a or movable, so that the molds can be opened and the Strut brackets 8 can be formed. This is possible because the opposing piston 4 blocks the sprue 9 and thus prevents the flow of the liquid casting material into the cavities 5.

Die Formteile 6a, 6b können vorzugsweise durch horizontales Verschieben geöffnet und geschlossen werden um die gegossenen Federbeinstützen 8 zu entformen. Als besonders bevorzugte Ausführungsform ist jeweils nur eines der Formteile 6a beweglich und das andere festzustehend 6b.The mold parts 6a, 6b can preferably be opened and closed by horizontal displacement in order to remove the cast strut supports 8. As a particularly preferred embodiment, only one of the mold parts 6a is movable in each case and the other 6b to be fixed.

Ebenfalls ist es bei diesen Verfahren möglich die Formen 7 zu öffnen bevor der Pressrest in der Giesskammer 2 komplett erstarrt ist da der Gegenkolben 4 hoch gefahren wird um den Pressrest abzuscheren Der Gegenkolben 4 kann sogar bereits hochgefahren werden, wenn die Nachspeisung des Gussteils abgeschlossen ist und der Pressrest aufgrund seiner Masse noch nicht erstarrt ist. Das verkürzt die Taktzeit wesentlich.It is also possible with these methods, the molds 7 to open before the press residue is completely solidified in the casting chamber 2 because the counter-piston 4 is moved up to shear the press rest The opposing piston 4 can even be started up when the make-up of the casting is completed and the press rest is not yet solidified due to its mass. This shortens the cycle time significantly.

Zudem wird der Gegenkolben 4 hochgefahren um den Pressrest abzuscheren damit ein Ausformen überhaupt möglich ist.In addition, the counter-piston 4 is raised to shear the press rest so that a molding is possible at all.

Fig. 2 zeigt eine schematische Darstellung der Giesskammer 2 mit den gegossenen Federbeinstützen 8. Der Giessantriebskolben 3 presst den flüssigen Giesswerkstoff in die Kavitäten 5 die das Negativ der Federbeinstützen 8 bilden. Es ist gut zu erkennen, dass der fliessfähige Giesswerkstoff nur jeweils über einen Anguss 9 und auch nur über jeweils einen Kanal 10 in die Kavitäten 5 gepresst wird.
Der Gegenkolben 4 dient einerseits dem Abscheren des Pressrests, wie auch der Schliessung der Kanäle 10 bzw. der Angusse 9, wodurch wie zuvor erwähnt, ein Auffüllen der Giesskammer 2 und ein Entformen der Formen 7 parallel bzw. zeitgleich stattfinden kann. Fig. 2 shows a schematic representation of the casting chamber 2 with the cast strut supports 8. The casting drive piston 3 presses the liquid casting material into the cavities 5 which form the negative of the suspension struts 8. It is easy to see that the flowable casting material is pressed into the cavities 5 only via a sprue 9 and only via one channel 10 each.
The counter-piston 4 serves on the one hand the shearing off of the pressing residue, as well as the closing of the channels 10 and the sprues 9, whereby, as mentioned above, a filling of the casting chamber 2 and a demolding of the molds 7 can take place in parallel or at the same time.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Druckgiessvorrichtungdie casting
22
Giesskammercasting chamber
33
GiessantriebskolbenGiessantriebskolben
44
Gegenkolbenopposed piston
55
Kavitätcavity
6a6a
Formteil beweglichMolding mobile
6b6b
Formteil feststehendMolding fixed
77
Formshape
88th
FederbeinstützeStrut support
99
Angusssprue
1010
Kanalchannel

Claims (6)

  1. A method for die casting of suspension struts (8), wherein a flowable casting material is pressed into two cavities (5) which lies back to back opposite one another, wherein the cavities (5) each are each formed by two mould parts (6a, 6b) which each form a mould (7), wherein a casting chamber (2) is arranged between the moulds (7), in which casting chamber the fluid casting material is vertically pressed by way of a casting drive plunger (3) and wherein the casting chamber (2) is filled with a flowable casting material whilst the moulds (7) are still opened and a counter-plunger (4) covers the sprue (9).
  2. A method for die casting of suspension struts (8) according to claim 1, characterised in that the moulds (7) are opened before the complete solidification of the discards in the casting chamber (2).
  3. A method for die casting of suspension struts (8) according to claim 1 or 2, characterised in that the counter-plunger (4) is moved upward directly after the post-feed.
  4. A method for die casting of suspension struts (8) according to one of the claims 1 to 3, characterised in that the discards in the casting chamber (2) are sheared away by way of a counter-plunger (4).
  5. A method for die casting of suspension struts (8) according to one of the claims 1 to 4, characterised in that the flowable casting material is pressed via a central sprue (9) into the cavities (5) of the moulds (7), wherein each mould has its own sprue (9).
  6. A method for die casting of suspension struts (8) according to one of the claims 1 to 5, characterised in that the plungers (3, 4) are hydraulically operated.
EP15153797.4A 2015-02-04 2015-02-04 Die casting of suspension struts Active EP3053672B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15153797.4A EP3053672B1 (en) 2015-02-04 2015-02-04 Die casting of suspension struts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15153797.4A EP3053672B1 (en) 2015-02-04 2015-02-04 Die casting of suspension struts

Publications (2)

Publication Number Publication Date
EP3053672A1 EP3053672A1 (en) 2016-08-10
EP3053672B1 true EP3053672B1 (en) 2019-07-03

Family

ID=52449992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15153797.4A Active EP3053672B1 (en) 2015-02-04 2015-02-04 Die casting of suspension struts

Country Status (1)

Country Link
EP (1) EP3053672B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3511090B1 (en) 2018-01-15 2020-10-28 Druckguss Service Deutschland GmbH Cold chamber pressure casting machine
CN108817346A (en) * 2018-07-06 2018-11-16 安徽思源三轻智能制造有限公司 A kind of high-efficiency vertical die casting machine
EP3682985A1 (en) 2019-01-21 2020-07-22 Druckguss Service Deutschland GmbH Method for operating a light metal cold chamber pressure casting machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1717254A (en) 1927-09-01 1929-06-11 Polak Josef Casting machine
DE750697C (en) * 1938-07-05 1945-01-24 Process in compression molding machines with a compression piston and a counter piston closing the compression chamber
DE102012107363A1 (en) 2011-09-16 2013-03-21 Ksm Castings Group Gmbh Three-plate die-casting tool with sprue system and sprue system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3053672A1 (en) 2016-08-10

Similar Documents

Publication Publication Date Title
DE102016106256B3 (en) Apparatus for the production of castings, such as cast aluminum, in the low-pressure casting process
DE102011120220B4 (en) Mold for producing castings
EP3053672B1 (en) Die casting of suspension struts
CH700743A1 (en) Ventilation device for molding means.
DE102017124150B4 (en) Die casting mold for casting cylinder crankcases or crankcase lower parts
DE19606806C2 (en) Device for thixoforming
DE938606C (en) Method and device for producing a branched pipe connection
EP3036090B1 (en) Mould system and method for producing components by the rtm method
DE102016123491A1 (en) Casting device, press and method for casting a component and component
EP2929957A1 (en) Die casting machine and method for manufacturing several casting parts
EP3511090B1 (en) Cold chamber pressure casting machine
DE2233395A1 (en) INJECTION MOLD WITH EJECTOR DEVICE
DE102017131280A1 (en) A method of manufacturing a molded article and a feeder insert for use in such a method
CH206488A (en) Mold for plastics.
EP2134528B1 (en) Moulding tool with a modular construction comprising a frame
DE2906858C2 (en) Molding device for the production of molded parts made of glass, ceramic, plastic and the like.
DE102009031604A1 (en) Sand casting tool for producing sand casting product, comprises first and second molded parts, which are movable relative to each other in direction to Z-axis and have first and second mold recesses, and nozzle- and/or smooth pressing unit
CH321594A (en) Press casting machine
DE112014004304T5 (en) High pressure casting device and high pressure casting process
DE102005050746B3 (en) Operating method for mold closing units on injection molding or die casting machines uses locking cylinder with central piston on tie rods which encloses narrow chamber at point where mold closes, which is evacuated
EP1848577B1 (en) Injection moulding machine for processing plastic materials
DE102016113644A1 (en) caster
AT520224A1 (en) Process for producing a molded part
DE1913739A1 (en) Injection molding machine for processing plastics
DE10225165A1 (en) Injection mouldings production involves injecting a material into the hollow section of a tool via a channel, and then shearing off the arms formed in the channel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170124

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180522

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190107

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEORG FISCHER GMBH & CO KG

Owner name: GEORG FISCHER GMBH

Owner name: GEORG FISCHER DRUCKGUSS GMBH

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DRUCKGUSS SERVICE DEUTSCHLAND GMBH

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1150357

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502015009484

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER AND PEDRAZZINI AG, CH

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190703

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191003

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191003

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191103

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191004

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502015009484

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

26N No opposition filed

Effective date: 20200603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200204

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20220221

Year of fee payment: 8

Ref country code: DE

Payment date: 20220221

Year of fee payment: 8

Ref country code: CH

Payment date: 20220221

Year of fee payment: 8

Ref country code: AT

Payment date: 20220215

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20220228

Year of fee payment: 8

Ref country code: FR

Payment date: 20220221

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502015009484

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1150357

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230204

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230204

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230204

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230901