EP1153680A1 - Process and apparatus for supplying mold-release agent to a die casting machine - Google Patents

Process and apparatus for supplying mold-release agent to a die casting machine Download PDF

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Publication number
EP1153680A1
EP1153680A1 EP01110965A EP01110965A EP1153680A1 EP 1153680 A1 EP1153680 A1 EP 1153680A1 EP 01110965 A EP01110965 A EP 01110965A EP 01110965 A EP01110965 A EP 01110965A EP 1153680 A1 EP1153680 A1 EP 1153680A1
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EP
European Patent Office
Prior art keywords
mold
release agent
casting
nozzle head
casting machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01110965A
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German (de)
French (fr)
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EP1153680B1 (en
Inventor
Johann Weichand
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.)
Fuchs Lubritech GmbH
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Fuchs Lubritech GmbH
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Publication date
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Publication of EP1153680A1 publication Critical patent/EP1153680A1/en
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    • 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
    • B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
    • 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
    • B22D17/14—Machines with evacuated die cavity
    • 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
    • B22D17/2038—Heating, cooling or lubricating the injection unit

Definitions

  • the invention relates to a method for entering a release agent into a Die casting machine according to the preamble of claim 1 and a die casting machine to carry out the procedure.
  • WO-A1-9301910 describes a method for operating a die casting machine known, in the metal melt located in a reservoir in a metered amount into a casting cylinder and from there by means of a Casting piston is pressed into a mold space. After a selectable number of casting cycles, the supply of the molten metal to the casting cylinder or Filling chamber interrupted, after which injectors, which the casting cylinder in Area of a molten metal filling opening of the casting cylinder are assigned, cleaning the molten metal filling opening and gassing the cylinder and the mold cavity for the purpose of cleaning and / or release agent coating can be initiated.
  • the mold is provided with a ventilation channel, through which during the molding process of the molding in the mold cavity existing air can flow out.
  • EP-A1-0 983 812 describes a method for applying a separating or Known lubricant that on the surface of a casting piston and / or Inner wall of a casting chamber, a casting channel and / or a mold cavity is given to a die casting machine.
  • the separator or Lubricant evaporates outside the die casting unit and this substance closed mold passed into the die casting unit. It is then waited until this substance condenses on the surface mentioned before the casting process can start.
  • This substance consists of one or more substances, whose respective evaporation temperature is higher than the temperature of the named surface is.
  • the evaporated release agent or lubricant occurs into the casting cylinder and at the same time by means of a ventilation duct vacuum system connected.
  • a similar process is known from DE-A1-199 06 770.
  • the distribution of the release or lubricant is in the casting cavity in these two known methods, however imperfect.
  • DE-A1-38 42 720 also provides a device for suctioning Pollutants known from casting machines for metal parts, the one the casting machine has an air barrier shielding the surroundings. Compressed air nozzles and suction openings of this device are close to the opening gap of the mold halves and are only adjusted during opening hours the mold halves activated. This device forms a significant additional effort for the casting machine and does not consider all pollutants far from the environment.
  • EP 0 230 660 also describes an injection molding process according to the preamble of claim 1 known, in which a casting machine with a stationary Mold half and a movable mold half is used.
  • a casting machine with a stationary Mold half and a movable mold half is used.
  • the movable mold half is an ejector pin which the ejects solidified molding.
  • the release agent is poured on supplied, which connects the mold cavity with the injection cylinder.
  • an injection channel be, which is provided in particular in the ejector pin.
  • the object of the invention is a method in the preamble of Claim 1 to create the kind with which in addition to an environmentally friendly Disposal of the release agent under a better distribution of the release agent low material and cost expenditure is possible.
  • the release agent By entering the release agent through a special channel, for example runs approximately in the middle of one mold half, and the suction operation of the release agent at at least two different locations in the mold space a better distribution of this agent in the mold space is achieved, so that the amount required for a release agent injection is reduced can. At the same time there is excellent lubrication of the casting cylinder and of the pressure piston, since the release agent also acts as a lubricant.
  • a powdery or liquid release agent used.
  • the use of a liquid Release agent in itself leads to the fact that when opening the mold halves Smoke development, which is caused by the burned release agent, is low.
  • the powdery or liquid release agent also helps with cooling the mold while the highly heated release agent as in the EP-A1-0 983 81 the casting mold in the course of the casting operation on impermissible Temperatures threaten to heat up.
  • the temperature of the mold should be below be kept at about 200 ° C. So the cooling problem is reduced if that Release agent is blown in the form of aqueous suspensions.
  • the mold is cooled until that in connection with an internal, customary mold cooling simple parts the mold temperature can be kept in the target range.
  • An interruption in the casting process to introduce an external coolant is ideally not necessary.
  • the amount of release agent blown in could therefore also regulate within certain limits Mold temperature can be used.
  • Suction of the release agent made through special suction channels become.
  • the invention also proposes a die casting machine for performing the Method before, in which the special injection channel can be closed by means of a valve is. This avoids pouring material into this injection channel can penetrate.
  • the invention also proposes a die casting machine for performing the Procedure before, in which the special injection channel is axially into the mold cavity is guided channel which is arranged in the fixed mold half.
  • This axial injection channel can be used alone or in addition to a radial injection channel be provided and improves the distribution of the release agent.
  • the axial Injection channel formed with an injector which consists of a cylinder-piston unit and a nozzle head connected to the piston consists.
  • connection of the Piston with the nozzle head over a nozzle head holder into which the nozzle head is interchangeable Therefore, depending on the type of mold space nozzle heads of different lengths are used or the nozzle heads for cleaning be replaced.
  • the nozzle head formed as a cylindrical part, the one at one end Ring flange for insertion in the nozzle head holder and at its other end has radial nozzle channels connected to the injection channel.
  • suction channels are one and connected the same filter to a vacuum source. This will particles from the casting process are removed from the vacuum source held.
  • Figures 1 and 2 of the die casting machine are only those for the invention essential parts shown.
  • Two mold halves 1, 2 close one Casting mold space 3, which receives the molten metal and the shape of the molding certainly.
  • the mold half 1 is movable, while the mold half 2 is stationary.
  • the casting mold space 3 stands over casting channels 4 with one through the casting mold half 2 guided casting cylinder 5 in connection, in which a pressure piston 6 is arranged is.
  • the casting cylinder 5 is with a rotatable locking ring 22 provided which has a pouring opening 7 through which a metered amount of Metal melt can be entered into the casting cylinder 5.
  • the casting cylinder points also a suction opening 8, which can be closed by the locking ring 22 is.
  • the locking ring 22, on the other hand, can be connected by rotation between the suction opening 8 and one connected to the locking ring Manufacture suction pipe 9.
  • the casting mold space 3 is on the other hand formed over in the mold half 1 special suction channels 10, 11, via a ventilation channel 12 and a in both mold halves 1, 2 formed, so-called washboard 13 with a filter 14 in connection to which a vacuum source, not shown connected.
  • the suction channels 10, 11 open on the one hand to ge appropriate places left and right of the ventilation channel 12 in the mold space 3 and on the other hand into the ventilation duct 12.
  • These suction ducts have an approximately meandering structure, so that the penetrating metal melt can cool down quickly.
  • the release agent is also via these suction channels distributed in the mold space 3.
  • the washboard 13 is used for quick Cooling of the ascending molten metal and guarantees an error-free Formation of the molding while the filter 14 is formed during the casting process Keeps particles away from the vacuum source.
  • Suction pipe 9 connected at the filter 14 .
  • the control for the vacuum source is not shown. Only a valve 15 is shown, which the suction line before Filter 14 can interrupt.
  • a release agent container 17 is connected from the outside a solenoid valve 18 and a dosing container 19 are connected.
  • Dosing container is a compressed air source, not shown, via a solenoid valve 20 connected.
  • the injection channel 16 can be closed with a valve 21 become.
  • the release agent in the release agent container is preferred liquid.
  • a release agent input cycle proceeds as follows, with the individual Operations are effected by a control device, not shown.
  • the mold 1, 2 is closed and the pouring opening 7 by means of the Lock ring 22 closed.
  • the injection channel 16 is by means of a channel locking bolt of the valve 21 closed.
  • the solenoid valve 18 then opens for a given time interval, leaving a certain, proportionate small amount of release agent in the dosing container 19.
  • the valve 21 then opens for a specified time interval.
  • that opens Solenoid valve 20 according to a predetermined time interval so that the Dosing container 19 existing release agent via the injection channel 16 in the Mold room 3 arrives.
  • the injected Release agent with swirling on the one hand via suction channels 10, 11, 12 and the washboard 13 and on the other hand is sucked off via the suction pipe 9.
  • the release agent is atomized (aerosol formation) on the wall in the Mold space 3 evenly distributed and cools the mold. Then can the pouring opening 7 are opened and the pouring process begins.
  • suction channels 10 11 suction channels that are not in lead the ventilation channel 12, but separately from the mold half 1 led out and then connected to the vacuum source via its own filter are.
  • These channels can expediently also each by means of a be closable at their mouths in the mold acting valve, so no molten metal, just the release agent in these channels can penetrate.
  • the injection of the release agent can also a special injection channel 22 leading axially into the mold space 3 take place, which is arranged in the fixed mold half 2.
  • This release agent injection can alone without the injection channel 16 or in addition to Injection channel 16 take place.
  • Figures 3 to 10 show how one for one Release agent injection necessary injection device designed as an example can be.
  • a cavity 23 is provided in the injection mold half 2, in which an injector 24 is fastened by means of screws such as screw 25 is.
  • the injection device 24 consists of a cylinder-piston unit a cylinder 26 and a piston 27 and a nozzle head 28 and a nozzle head holder 29.
  • the nozzle head holder 29 is in the left end of the Piston 27 screwed in and receives the nozzle head 28 interchangeably.
  • the piston 27 is controlled hydraulically in the usual way via a indicated connection 30 and is not shown. The adjustment of the Piston 27 is only a few millimeters.
  • the injection channel 22 is through axial bores through the nozzle head 28, the nozzle head holder 29 and the piston 27 formed up to a release agent connection 31, the Release agent supply to this release agent connection 31 is not shown.
  • the time sequences of the release agent injection take place via the injection channel 22 in a similar way, as already with reference to Figures 1 and 2 for the injection channel 16 has been described.
  • FIGS. 4 to 10 The individual parts of the injection device 24 are shown in FIGS. 4 to 10 shown enlarged.
  • the cylinder-piston unit shown in FIGS. 4 to 6 has a cylinder 26 with two flanges 33, 34, each with three fastening holes, such as fastening hole 35.
  • the cylinder-piston unit 26, 27 can be fastened to the casting mold half 2 by means of screws inserted through these fastening holes, such as the screw 25 (FIG. 3).
  • the cylinder 26 has channels 30 ', not shown, for the piston control.
  • the piston 27 has a threaded bore 36, which is guided coaxially with the injection channel 22, for screwing in the nozzle head holder 29.
  • the nozzle head holder 29 shown in FIGS. 7 and 8 consists of a substantially cylindrical part 37 and one coaxially aligned therewith Threaded stub 38 for screwing into the threaded bore 36 (Fig. 5).
  • the part 37 has an upwardly open, U-shaped recess on the end face 39, towards which a wider, U-shaped open towards the threaded stump 38 Recess 40 connects. Both recesses 39, 40 are used for Inserting and receiving the nozzle head 28 from above.
  • a small bore 41 is provided, which does not hold a locking pin shown is used.
  • the nozzle head 28 shown in FIGS. 9 and 10 has a cylindrical shape Part 42 and an annular flange 43, which is at the right end of part 42 located.
  • the ring flange 43 has an annular groove 44 on the end face for inserting one O-seal, not shown, that the sealing of the injection channel 22 on the part 37 serves.
  • the ring flange also has a semicircular recess in the lower region 45 for locking the nozzle head 28 against rotation on the nozzle head holder 29 by means of the locking pin mentioned.
  • the injection channel is connected to four radial nozzle channels, such as the nozzle channel 46. These nozzle channels are 27 when the piston is retracted closed by the mold half 2 and with the piston 27 extended to Casting mold room 3 open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

Process for feeding a separating agent into casting mold (1, 2) having a casting chamber (3) and a ventilating channel and into the casting cylinder (5) of a pressure casting machine comprises injecting the agent into the mold via a channel and additionally sucking the agent via an opening (8) arranged in the casting cylinder. An Independent claim is also included for a pressure casting machine. Preferred Features: The separating agent is a powder or a liquid.

Description

Die Erfindung betrifft ein Verfahren zum Eingeben eines Trennmittels in eine Druckgießmaschine nach dem Oberbegriff des Anspruchs 1 und eine Druckgießmaschine zur Durchführung des Verfahrens.The invention relates to a method for entering a release agent into a Die casting machine according to the preamble of claim 1 and a die casting machine to carry out the procedure.

Durch die WO-A1-9301910 ist ein Verfahren zum Betreiben einer Druckgießmaschine bekannt, bei der in einem Vorratsbehälter befindliche Metallschmelze in dosierter Menge in einen Gießzylinder gelangt und von dort mittels eines Gießkolbens in einen Gießformraum gepresst wird. Nach einer wählbaren Anzahl von Gießzyklen wird die Zufuhr der Metallschmelze zum Gießzylinder bzw. Füllkammer unterbrochen, wonach über Einspritzmittel, die dem Gießzylinder im Bereich einer Metallschmelzeneinfüllöffnung des Gießzylinders zugeordnet sind, eine Reinigung der Metallschmelzeneinfüllöffnung sowie ein Begasen des Zylinders und des Gussformraums zum Zwecke der Reinigung und/oder Trennmittelbeschichtung einleitbar ist. Die Gießform ist mit einem Entlüftungskanal versehen, über den beim Gießvorgang des Spritzlings die im Gießformhohlraum vorhandene Luft abströmen kann. WO-A1-9301910 describes a method for operating a die casting machine known, in the metal melt located in a reservoir in a metered amount into a casting cylinder and from there by means of a Casting piston is pressed into a mold space. After a selectable number of casting cycles, the supply of the molten metal to the casting cylinder or Filling chamber interrupted, after which injectors, which the casting cylinder in Area of a molten metal filling opening of the casting cylinder are assigned, cleaning the molten metal filling opening and gassing the cylinder and the mold cavity for the purpose of cleaning and / or release agent coating can be initiated. The mold is provided with a ventilation channel, through which during the molding process of the molding in the mold cavity existing air can flow out.

Wenn kompliziertere Formen gegossen werden müssen, so ist jedoch nicht gesichert, dass das Reinigungs- bzw. Trennmittel auch alle Teile des Gießformraums erreicht, so dass die Reinigung unvollkommen ist und der Spritzling schlecht zu lösen ist. Ein weiterer Nachteil besteht darin, dass als Trennmittel ein Pulver verwendet wird und Reste dieses Pulvers nach den Öffnen der Form als kräftige Wolke die Umgebung beeinträchtigen.If more complicated shapes have to be cast, however, it is not ensured that the cleaning or release agent also reached all parts of the mold cavity, making cleaning imperfect and the molding is difficult to solve. Another disadvantage is in that a powder is used as a release agent and residues of this powder after opening the mold as a strong cloud affect the environment.

Eine ähnliches Verfahren ist durch die DE-A1-35 18 635 bekannt, bei dem zusätzlich während des Spritzvorgangs für den Spritzling die im Gießformraum vorhandene Luft über den Entlüftungskanal abgesaugt wird.A similar method is known from DE-A1-35 18 635, in which additionally during the spraying process for the molding in the mold room existing air is extracted via the ventilation duct.

Aus der EP-A1-0 983 812 ist ein Verfahren zur Applikation eines Trenn- oder Schmierstoffs bekannt, das auf die Oberfläche eines Gießkolbens und/oder die Innenwandung einer Gießkammer, eines Gießkanals und/oder eines Formhohlraums einer Druckgießmaschine gegeben wird. Dabei wird der Trenn- oder Schmierstoff außerhalb der Druckgießeinheit verdampft und dieser Stoff bei geschlossener Gießform in die Druckgießeinheit geleitet. Es wird dann abgewartet, bis dieser Stoff auf der genannten Oberfläche kondensiert, ehe der Gießvorgang beginnen kann. Dieser Stoff besteht aus einer oder mehreren Substanzen, deren jeweilige Verdampfungstemperatur höher als die Temperatur der genannten Oberfläche ist. Der verdampfte Trenn- oder Schmierstoff tritt dabei in den Gießzylinder ein und wird gleichzeitig mittels einer an einen Entlüftungskanal angeschlossenen Vakuumanlage abgesaugt. Ein ähnliches Verfahren ist durch die DE-A1-199 06 770 bekannt. Die Verteilung des Trenn- oder Schmierstoffs im Gießhohlraum ist bei diesen beiden bekannten Verfahren jedoch unvollkommen. EP-A1-0 983 812 describes a method for applying a separating or Known lubricant that on the surface of a casting piston and / or Inner wall of a casting chamber, a casting channel and / or a mold cavity is given to a die casting machine. The separator or Lubricant evaporates outside the die casting unit and this substance closed mold passed into the die casting unit. It is then waited until this substance condenses on the surface mentioned before the casting process can start. This substance consists of one or more substances, whose respective evaporation temperature is higher than the temperature of the named surface is. The evaporated release agent or lubricant occurs into the casting cylinder and at the same time by means of a ventilation duct vacuum system connected. A similar process is known from DE-A1-199 06 770. The distribution of the release or lubricant is in the casting cavity in these two known methods, however imperfect.

Durch die DE-A1-38 42 720 ist ferner eine Vorrichtung zum Absaugen von Schadstoffen von Gießmaschinen für Metallteile bekannt, die eine die Gießmaschine gegen die Umgebung abschirmende Luftschranke aufweist. Druckluftdüsen und Absaugöffnungen dieser Vorrichtung sind eng an den Öffnungsspalt der Gussformhälften angepast und werden nur während der Öffnungszeiten der Gussformhälften aktiviert. Diese Vorrichtung bildet einen erheblichen, zusätzlichen Aufwand für die Gießmaschine und hält nicht alle Schadstoffe von der Umgebung fern.DE-A1-38 42 720 also provides a device for suctioning Pollutants known from casting machines for metal parts, the one the casting machine has an air barrier shielding the surroundings. Compressed air nozzles and suction openings of this device are close to the opening gap of the mold halves and are only adjusted during opening hours the mold halves activated. This device forms a significant additional effort for the casting machine and does not consider all pollutants far from the environment.

Durch die EP 0 230 660 ist ferner ein Spritzgießverfahren gemäß dem Oberbegriff des Anspruchs 1 bekannt, bei dem eine Gießmaschine mit einer ortsfesten Gießformhälfte und einer beweglichen Gießformhälfte verwendet wird. In der beweglichen Gießformhälfte ist ein Auswerferstift angeordnet, der den erstarrten Formling auswirft. Das Trennmittel wird dabei über einen Anguss zugeführt, der den Gießformraum mit dem Spritzzylinder verbindet. Für die Trennmitteleinspritzung kann zusätzlich auch ein Einspritzkanal verwendet werden, der insbesondere im Auswerferstift vorgesehen ist.EP 0 230 660 also describes an injection molding process according to the preamble of claim 1 known, in which a casting machine with a stationary Mold half and a movable mold half is used. In the movable mold half is an ejector pin which the ejects solidified molding. The release agent is poured on supplied, which connects the mold cavity with the injection cylinder. For the Release agent injection can also use an injection channel be, which is provided in particular in the ejector pin.

Die Aufgabe der Erfindung besteht darin, ein Verfahren der im Oberbegriff des Anspruchs 1 genannten Art zu schaffen, mit dem neben einer umweltfreundlichen Entsorgung des Trennmittels ein bessere Verteilung des Trennmittels unter geringem Material- und Kostenaufwand möglich ist.The object of the invention is a method in the preamble of Claim 1 to create the kind with which in addition to an environmentally friendly Disposal of the release agent under a better distribution of the release agent low material and cost expenditure is possible.

Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved with the features of claim 1.

Durch die Eingabe des Trennmittels über einen besonderen Kanal, der beispielsweise etwa in der Mitte der einen Gießformhälfte verläuft, und den Absaug vorgang des Trennmittels an mindestens zwei verschiedenen Stellen des Gießformraums wird ein bessere Verteilung dieses Mittels im Gießformraum erzielt, so dass die für eine Trennmitteleinspritzung benötigte Menge reduziert werden kann. Gleichzeitig erfolgt eine hervorragende Schmierung des Gießzylinders und des Druckkolbens, da das Trennmittel auch als Schmiermittel wirkt.By entering the release agent through a special channel, for example runs approximately in the middle of one mold half, and the suction operation of the release agent at at least two different locations in the mold space a better distribution of this agent in the mold space is achieved, so that the amount required for a release agent injection is reduced can. At the same time there is excellent lubrication of the casting cylinder and of the pressure piston, since the release agent also acts as a lubricant.

Gemäß einer weiteren Ausbildung der Erfindung wird ein pulverförmiges oder flüssiges Trennmittel verwendet. Insbesondere die Verwendung eines flüssigen Trennmittels führt an sich schon dazu, dass beim Öffnen der Formhälften die Rauchentwicklung, die durch das verbrannte Trennmittel bedingt ist, gering ist. Das pulverförmige oder flüssige Trennmittel trägt vor allem auch zur Kühlung der Gießform bei, während sich mit dem hocherhitzten Trennmittel wie bei der EP-A1-0 983 81 die Gießform im Verlauf des Gießbetriebs auf unzulässige Temperaturen aufzuheizen droht. Die Temperatur der Gießform sollte aber unter etwa 200°C gehalten werden. Das Kühlproblem wird also reduziert, wenn das Trennmittel in Form wässriger Suspensionen eingeblasen wird. Infolge der hohen Verdampfungsenthalpie des Wassers wird die Gießform soweit gekühlt, dass in Verbindung mit einer internen, praxisüblichen Gießformkühlung bei einfachen Teilen die Gießformtemperatur im Sollbereich gehalten werden kann. Eine Unterbrechung des Gießprozesses zum Einbringen eines externen Kühlmittels ist im Idealfall nicht notwendig. Die Menge des eingeblasenen Trennmittels könnte daher auch innerhalb bestimmter Grenzen zur Regelung der Gießformtemperatur eingesetzt werden.According to a further embodiment of the invention, a powdery or liquid release agent used. In particular, the use of a liquid Release agent in itself leads to the fact that when opening the mold halves Smoke development, which is caused by the burned release agent, is low. The powdery or liquid release agent also helps with cooling the mold while the highly heated release agent as in the EP-A1-0 983 81 the casting mold in the course of the casting operation on impermissible Temperatures threaten to heat up. The temperature of the mold should be below be kept at about 200 ° C. So the cooling problem is reduced if that Release agent is blown in the form of aqueous suspensions. As a result of high evaporation enthalpy of the water, the mold is cooled until that in connection with an internal, customary mold cooling simple parts the mold temperature can be kept in the target range. An interruption in the casting process to introduce an external coolant is ideally not necessary. The amount of release agent blown in could therefore also regulate within certain limits Mold temperature can be used.

Um die Verteilung des Trennmittels noch zu verbessern, erfolgt gemäß einer weiteren Ausbildung des Verfahrens die Absaugung auch über zusätzliche Absaugkanäle, die einerseits in den Gießformraum und andrerseits in den Entlüftungskanal münden. To improve the distribution of the release agent, according to one further training of the suction process also via additional Suction channels, on the one hand in the mold cavity and on the other hand in the ventilation channel flow out.

Alternativ kann auch gemäß einer weiteren Ausbildung des Verfahrens die Absaugung des Trennmittels über besondere Absaugkanäle vorgenommen werden.Alternatively, according to a further embodiment of the method Suction of the release agent made through special suction channels become.

Die Erfindung schlägt auch eine Druckgießmaschine zur Durchführung des Verfahrens vor, bei der der besondere Einspritzkanal mittels eines Ventils verschließbar ist. Dadurch wird vermieden, dass in diesen Einspritzkanal Gießmaterial eindringen kann.The invention also proposes a die casting machine for performing the Method before, in which the special injection channel can be closed by means of a valve is. This avoids pouring material into this injection channel can penetrate.

Die Erfindung schlägt auch eine Druckgießmaschine zur Durchführung des Verfahrens vor, bei der der besondere Einspritzkanal ein axial in den Gießformraum geführter Kanal ist, der in der ortsfesten Gießformhälfte angeordnet ist. Dieser axiale Einspritzkanal kann allein oder zusätzlich zu einem radialen Einspritzkanal vorgesehen sein und verbessert die Verteilung des Trennmittels.The invention also proposes a die casting machine for performing the Procedure before, in which the special injection channel is axially into the mold cavity is guided channel which is arranged in the fixed mold half. This axial injection channel can be used alone or in addition to a radial injection channel be provided and improves the distribution of the release agent.

Gemäß einer weiteren, vorteilhaften Ausbildung der Erfindung ist der axiale Einspritzkanal mit einer Einspritzvorrichtung gebildet, die aus einer Zylinder-Kolben-Einheit und einem mit dem Kolben in Verbindung stehenden Düsenkopf besteht.According to a further advantageous embodiment of the invention, the axial Injection channel formed with an injector, which consists of a cylinder-piston unit and a nozzle head connected to the piston consists.

Gemäß einer weiteren Ausbildung der Erfindung erfolgt die Verbindung des Kolbens mit dem Düsenkopf über einen Düsenkopfhalter, in den der Düsenkopf auswechselbar einlegbar ist. Daher können je nach Art des Gießformraums verschieden lange Düsenköpfe verwendet oder die Düsenköpfe zwecks Reinigung ausgetauscht werden.According to a further embodiment of the invention, the connection of the Piston with the nozzle head over a nozzle head holder into which the nozzle head is interchangeable. Therefore, depending on the type of mold space nozzle heads of different lengths are used or the nozzle heads for cleaning be replaced.

Gemäß einer weiteren, zweckmäßigen Ausbildung der Erfindung ist der Düsenkopf als zylinderförmiger Teil ausgebildet, der an seinem einen Ende einen Ringflansch zum Einlegen in den Düsenkopfhalter und an seinem anderen Ende mit dem Einspritzkanal in Verbindung stehende, radiale Düsenkanäle aufweist.According to a further, expedient embodiment of the invention, the nozzle head formed as a cylindrical part, the one at one end Ring flange for insertion in the nozzle head holder and at its other end has radial nozzle channels connected to the injection channel.

Gemäß einer weiteren Ausbildung der Erfindung sind alle Absaugkanäle über ein und dasselbe Filter an eine Unterdruckquelle angeschlossen. Dadurch werden werden vom Gießvorgang herrührende Partikel von der Unterdruckquelle fern gehalten.According to a further embodiment of the invention, all suction channels are one and connected the same filter to a vacuum source. This will particles from the casting process are removed from the vacuum source held.

Die Erfindung wird nun anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1
eine schematische Ansicht einer Druckgießmaschine zur Erläuterung des Verfahrens gemäß der Erfindung,
Fig. 2
eine Draufsicht auf eine Gießformhälfte mit Absaugkanälen der Druckgießmaschine nach Fig. 1,
Fig. 3
einen Vertikalschnitt durch einen Teil der orrtsfesten Gießformhälfte und eine Einspritzvorrichtung zur axialen Trennmittelzuführung zum Gießformraum,
Fig. 4
eine Stirnansicht einer Zylinder-Kolben-Einheit der in Fig. 3 gezeigten Einspritzvorrichtung,
Fig. 5
einen Schnitt längs der Linie V-V in Fig. 4,
Fig. 6
einen Schnitt längs der Linie VI-VI in Fig. 4,
Fig. 7
eine Stirnansicht eines Düsenkopfhalters der Einspritzvorrichtung der Fig. 3,
Fig. 8
eine Seitenansicht des Düsenkopfhalters der Fig. 7,
Fig. 9
eine Stirnansicht eines Düsenkopfs der Einspritzvorrichtung der Fig. 3 und
Fig. 10
einen Vertikalschnitt durch den Düsenkopf der Fig. 9.
The invention will now be explained in more detail on the basis of exemplary embodiments. Show it:
Fig. 1
2 shows a schematic view of a die casting machine for explaining the method according to the invention,
Fig. 2
2 shows a top view of a mold half with suction channels of the die casting machine according to FIG. 1,
Fig. 3
a vertical section through part of the stationary mold half and an injection device for the axial release agent supply to the mold space,
Fig. 4
3 shows an end view of a cylinder-piston unit of the injection device shown in FIG. 3,
Fig. 5
4 shows a section along the line VV in FIG. 4,
Fig. 6
4 shows a section along the line VI-VI in FIG. 4,
Fig. 7
3 shows an end view of a nozzle head holder of the injection device of FIG. 3,
Fig. 8
7 shows a side view of the nozzle head holder of FIG. 7,
Fig. 9
an end view of a nozzle head of the injector of FIGS. 3 and
Fig. 10
9 shows a vertical section through the nozzle head of FIG. 9.

In den Figuren 1 und 2 sind von der Druckgießmaschine nur die für die Erfindung wesentlichen Teile dargestellt. Zwei Gießformhälften 1, 2 schließen einen Gießformraum 3 ein, der die Metallschmelze aufnimmt und die Form des Spritzlings bestimmt. Die Gießformhälfte 1 ist dabei beweglich, während die Gießformhälfte 2 ortsfest ist.In Figures 1 and 2 of the die casting machine are only those for the invention essential parts shown. Two mold halves 1, 2 close one Casting mold space 3, which receives the molten metal and the shape of the molding certainly. The mold half 1 is movable, while the mold half 2 is stationary.

Der Gießformraum 3 steht über Gießkanäle 4 mit einem durch die Gießformhälfte 2 geführten Gießzylinder 5 in Verbindung, in dem ein Druckkolben 6 angeordnet ist. Der Gießzylinder 5 ist mit einer einem verdrehbaren Verschlussring 22 versehen, der eine Eingießöffnung 7 hat, über die eine dosierte Menge der Metallschmelze in den Gießzylinder 5 eingebbar ist. Der Gießzylinder weist ferner eine Absaugöffnung 8 auf, die durch den Verschlussring 22 verschließbar ist. Der Verschlussring 22 kann andrerseits durch Drehung eine Verbindung zwischen der Absaugöffnung 8 und einem an den Verschlußring angeschlossenesn Absaugrohr 9 herstellen.The casting mold space 3 stands over casting channels 4 with one through the casting mold half 2 guided casting cylinder 5 in connection, in which a pressure piston 6 is arranged is. The casting cylinder 5 is with a rotatable locking ring 22 provided which has a pouring opening 7 through which a metered amount of Metal melt can be entered into the casting cylinder 5. The casting cylinder points also a suction opening 8, which can be closed by the locking ring 22 is. The locking ring 22, on the other hand, can be connected by rotation between the suction opening 8 and one connected to the locking ring Manufacture suction pipe 9.

Der Gießformraum 3 steht andrerseits über in der Gießformhälfte 1 gebildete besondere Absaugkanäle 10, 11, über einen Entlüftungskanal 12 und über ein in beiden Gussformhälften 1, 2 gebildetes, sogenanntes Waschbrett 13 mit einem Filter 14 in Verbindung, an das eine nicht dargestellte Unterdruckquelle angeschlossen ist. Die Absaugkanäle 10, 11 münden dabei einerseits an ge eigneten Stellen links und rechts des Entlüftungskanals 12 in den Gussformraum 3 und andrerseits in den Entlüftungskanal 12. Diese Absaugkanäle haben dabei eine etwa mäanderförmige Struktur, damit die eindringende Metallschmelze sich schnell abkühlen kann. Über diese Absaugkanäle wird auch das Trennmittel im Gussformraum 3 verteilt. Das Waschbrett 13 dient zur schnellen Abkühlung der aufsteigenden Metallschmelze und garantiert eine fehlerfreie Ausbildung des Spritzlings, während das Filter 14 beim Gießvorgang entstehende Partikel von der Unterdruckquelle fernhält. An das Filter 14 ist auch das Absaugrohr 9 angeschlossen. Die Steuerung für die Unterdruckquelle ist nicht gezeigt. Es ist lediglich ein Ventil 15 dargestellt, das die Absaugleitung vor dem Filter 14 unterbrechen kann.The casting mold space 3 is on the other hand formed over in the mold half 1 special suction channels 10, 11, via a ventilation channel 12 and a in both mold halves 1, 2 formed, so-called washboard 13 with a filter 14 in connection to which a vacuum source, not shown connected. The suction channels 10, 11 open on the one hand to ge appropriate places left and right of the ventilation channel 12 in the mold space 3 and on the other hand into the ventilation duct 12. These suction ducts have an approximately meandering structure, so that the penetrating metal melt can cool down quickly. The release agent is also via these suction channels distributed in the mold space 3. The washboard 13 is used for quick Cooling of the ascending molten metal and guarantees an error-free Formation of the molding while the filter 14 is formed during the casting process Keeps particles away from the vacuum source. At the filter 14 is also that Suction pipe 9 connected. The control for the vacuum source is not shown. Only a valve 15 is shown, which the suction line before Filter 14 can interrupt.

Ferner mündet seitlich in den Gießformraum 3 in der Gießformhälfte 1 ein besonderer Einspritzkanal 16, an den von außen ein Trennmittelbehälter 17 über ein Magnetventil 18 und ein Dosierbehälter 19 angeschlossen ist. An diesen Dosierbehälter ist über ein Magnetventil 20 eine nicht dargestellte Druckluftquelle angeschlossen. Der Einspritzkanal 16 kann mit einem Ventil 21 verschlossen werden. Das Trennmittel im Trennmittelbehälter ist vorzugsweise flüssig.Furthermore, it opens laterally into the mold space 3 in the mold half 1 special injection channel 16 to which a release agent container 17 is connected from the outside a solenoid valve 18 and a dosing container 19 are connected. On this Dosing container is a compressed air source, not shown, via a solenoid valve 20 connected. The injection channel 16 can be closed with a valve 21 become. The release agent in the release agent container is preferred liquid.

Ein Trennmitteleingabezyklus läuft folgendermaßen ab, wobei die einzelnen Vorgänge durch eine nicht dargestellte Steuervorrichtung bewirkt werden. Zunächst wird die Gießform 1, 2 geschlossen und die Gießöffnung 7 mittels des Verschlussrings 22 geschlossen. Der Einspritzkanal 16 ist mittels eines Kanalverschlussbolzens des Ventils 21 geschlossen. Das Magnetventil 18 öffnet dann für ein vorgegebenes Zeitintervall und lässt damit eine bestimmte, verhältnismäßig geringe Menge an Trennmittel in den Dosierbehälter 19. Das Ventil 21 öffnet anschließend für ein vorgegebenes Zeitintervall. Gleichzeitig öffnet das Magnetventil 20 entsprechend einem vorgegebenen Zeitintervall, so dass das im Dosierbehälter 19 vorhandene Trennmittel über den Einspritzkanal 16 in den Gießformraum 3 gelangt. Etwa 0,2s danach öffnet ein Vakuumventil an der Unterdruckquelle für ein bestimmtes Zeitintervall, wobei das eingespritzte Trennmittel unter Verwirbelung einerseits über Absaugkanäle 10, 11, 12 und das Waschbrett 13 und andrerseits über das Absaugrohr 9 abgesaugt wird. Das Trennmittel wird dabei durch Zerstäubung (Aerosolbildung) an der Wandung im Gießformraum 3 gleichmäßig verteilt und kühlt dabei die Gießform. Dann kann die Eingießöffnung 7 geöffnet werden und der Gießvorgang beginnen.A release agent input cycle proceeds as follows, with the individual Operations are effected by a control device, not shown. First, the mold 1, 2 is closed and the pouring opening 7 by means of the Lock ring 22 closed. The injection channel 16 is by means of a channel locking bolt of the valve 21 closed. The solenoid valve 18 then opens for a given time interval, leaving a certain, proportionate small amount of release agent in the dosing container 19. The valve 21 then opens for a specified time interval. At the same time, that opens Solenoid valve 20 according to a predetermined time interval, so that the Dosing container 19 existing release agent via the injection channel 16 in the Mold room 3 arrives. About 0.2s later a vacuum valve on the Vacuum source for a certain time interval, the injected Release agent with swirling on the one hand via suction channels 10, 11, 12 and the washboard 13 and on the other hand is sucked off via the suction pipe 9. The The release agent is atomized (aerosol formation) on the wall in the Mold space 3 evenly distributed and cools the mold. Then can the pouring opening 7 are opened and the pouring process begins.

Da das Trennmittel auch über das Absaugrohr 9 abgesaugt wird, werden Gießzylinder 5 und Druckkolben 6 ausgezeichnet geschmiert. Es werden somit eine gute Schmierung und eine gute Entformung, eine Verminderung der Umweltbelastung, eine Verbesserung der Arbeitsumgebung und ein geringer Trennmittelverbrauch erreicht.Since the release agent is also sucked off through the suction pipe 9, casting cylinders 5 and pressure piston 6 excellently lubricated. So there will be one good lubrication and good demolding, a reduction in environmental pollution, an improvement in the working environment and a low release agent consumption reached.

Denkbar sind auch anstelle der Absaugkanäle 10, 11 Absaugkanäle, die nicht in den Entlüftungskanal 12 führen, sondern getrennt aus der Gießformhälfte 1 herausgeführt und dann über ein eigenes Filter mit der Unterdruckquelle verbunden sind. Diese Kanäle können zweckmäßigerweise auch jeweils mittels eines an ihren Mündungen in den Gießformraum wirkenden Ventils verschließbar sein, so dass keine Metallschmelze, sondern nur das Trennmittel in diese Kanäle eindringen kann.Are also conceivable instead of the suction channels 10, 11 suction channels that are not in lead the ventilation channel 12, but separately from the mold half 1 led out and then connected to the vacuum source via its own filter are. These channels can expediently also each by means of a be closable at their mouths in the mold acting valve, so no molten metal, just the release agent in these channels can penetrate.

In derselben Weise ist auch die Einspritzung und die Absaugung eines Reinigungsmittels möglich. The same applies to the injection and extraction of a cleaning agent possible.

Wie in Fig. 2 angedeutet ist, kann die Einspritzung des Trennmittels auch über einen besonderen, axial in den Gießformraum 3 führenden Einspritzkanal 22 erfolgen, der in der ortsfesten Gießformhälfte 2 angeordnet ist. Diese Trennmitteleinspritzung kann allein ohne den Einspritzkanal 16 oder zusätzlich zum Einspritzkanal 16 erfolgen. Die Figuren 3 bis 10 zeigen, wie eine für eine solche Trennmitteleinspritzung nötige Einspritzvorrichtung beispielhaft ausgebildet werden kann.As indicated in Fig. 2, the injection of the release agent can also a special injection channel 22 leading axially into the mold space 3 take place, which is arranged in the fixed mold half 2. This release agent injection can alone without the injection channel 16 or in addition to Injection channel 16 take place. Figures 3 to 10 show how one for one Release agent injection necessary injection device designed as an example can be.

Nach Fig. 3 ist in der Spritzformhälfte 2 ein Hohlraum 23 vorgesehen, in dem eine Einspritzvorrichtung 24 mittels Schrauben, wie die Schraube 25, befestigt ist. Die Einspritzvorrichtung 24 besteht aus einer Zylinder-Kolben-Einheit mit einem Zylinder 26 und einem Kolben 27 sowie aus einem Düsenkopf 28 und einem Düsenkopfhalter 29. Der Düsenkopfhalter 29 ist in die linke Stirnseite des Kolbens 27 eingeschraubt und nimmt den Düsenkopf 28 auswechselbar auf. Die Steuerung des Kolbens 27 erfolgt in üblicher Weise hydraulisch über einen angedeuteten Anschluss 30 und ist nicht näher dargestellt. Die Verstellung des Kolbens 27 beträgt dabei nur wenige Millimeter. Der Einspritzkanal 22 wird durch axiale Bohrungen durch den Düsenkopf 28, den Düsenkopfhalter 29 und den Kolben 27 bis hin zu einem Trennmittelanschluss 31 gebildet, wobei die Trennmittelzuführung zu diesem Trennmittelanschluss 31 nicht dargestellt ist. Die Zeitabläufe der Trennmitteleinspritzung über den Einspritzkanal 22 erfolgen in ähnlicher Weise, wie schon anhand der Figuren 1 und 2 für den Einspritzkanal 16 beschrieben wurde.3, a cavity 23 is provided in the injection mold half 2, in which an injector 24 is fastened by means of screws such as screw 25 is. The injection device 24 consists of a cylinder-piston unit a cylinder 26 and a piston 27 and a nozzle head 28 and a nozzle head holder 29. The nozzle head holder 29 is in the left end of the Piston 27 screwed in and receives the nozzle head 28 interchangeably. The The piston 27 is controlled hydraulically in the usual way via a indicated connection 30 and is not shown. The adjustment of the Piston 27 is only a few millimeters. The injection channel 22 is through axial bores through the nozzle head 28, the nozzle head holder 29 and the piston 27 formed up to a release agent connection 31, the Release agent supply to this release agent connection 31 is not shown. The time sequences of the release agent injection take place via the injection channel 22 in a similar way, as already with reference to Figures 1 and 2 for the injection channel 16 has been described.

Die einzelnen Teile der Einspritzvorrichtung 24 sind in den Figuren 4 bis 10 vergrößert dargestellt. The individual parts of the injection device 24 are shown in FIGS. 4 to 10 shown enlarged.

Die in den Figuren 4 bis 6 dargestellte Zylinder-Kolben-Einheit weist einen Zylinder 26 mit zwei Flanschen 33, 34 mit jeweils drei Befestigungslöchern, wie das Befestigungsloch 35, auf. Mittels durch diese Befestigungslöcher gesteckte Schrauben, wie der Schraube 25 (Fig. 3), ist die Zylinder-Kolben-Einheit 26, 27 an der Gießformhälfte 2 befestigbar.
Der Zylinder 26 hat nicht näher dargestellte Kanäle 30' für die Kolbensteuerung. Der Kolben 27 weist eine koaxial mit dem Einspritzkanal 22 geführte Gewindebohrung 36 für das Einschrauben des Düsenkopfhalters 29 auf.The cylinder-piston unit shown in FIGS. 4 to 6 has a cylinder 26 with two flanges 33, 34, each with three fastening holes, such as fastening hole 35. The cylinder-piston unit 26, 27 can be fastened to the casting mold half 2 by means of screws inserted through these fastening holes, such as the screw 25 (FIG. 3).
The cylinder 26 has channels 30 ', not shown, for the piston control. The piston 27 has a threaded bore 36, which is guided coaxially with the injection channel 22, for screwing in the nozzle head holder 29.

Der in den Figuren 7 und 8 dargestellte Düsenkopfhalter 29 besteht aus einem im Wesentlichen zylinderförmigen Teil 37 und einem mit diesem koaxial ausgerichteten Gewindestumpf 38 zum Einschrauben in die Gewindebohrung 36 (Fig. 5). Der Teil 37 hat stirnseitig eine nach oben offene, U-förmige Ausnehmung 39, an die sich zum Gewindestumpf 38 hin eine breitere, nach oben offene, U-förmige Ausnehmung 40 anschließt. Beide Ausnehmungen 39, 40 dienen zum Einführen und Aufnehmen des Düsenkopfs 28 von oben. Im unteren Bereich des Teils 37 ist eine kleine Bohrung 41 vorgesehen, die zur Aufnahme eines nicht gezeigten Arretierungsstifts dient.The nozzle head holder 29 shown in FIGS. 7 and 8 consists of a substantially cylindrical part 37 and one coaxially aligned therewith Threaded stub 38 for screwing into the threaded bore 36 (Fig. 5). The part 37 has an upwardly open, U-shaped recess on the end face 39, towards which a wider, U-shaped open towards the threaded stump 38 Recess 40 connects. Both recesses 39, 40 are used for Inserting and receiving the nozzle head 28 from above. In the lower part of the Part 37 is a small bore 41 is provided, which does not hold a locking pin shown is used.

Der in den Figuren 9 und 10 gezeigte Düsenkopf 28 weist ein zylinderförmiges Teil 42 und einen Ringflansch 43 auf, der sich am rechten Ende des Teils 42 befindet. Der Ringflansch 43 hat stirnseitig eine Ringnut 44 zum Einlegen einer nicht gezeigten O-Dichtung, die der Abdichtung des Einspritzkanals 22 am Teil 37 dient. Der Ringflansch weist ferner im unteren Bereich eine halbrunde Ausnehmung 45 zur verdrehsicheren Arretierung des Düsenkopfs 28 am Düsenkopfhalter 29 mittels des genannten Arretierungsstifts auf. Am linken Ende des Teils 42 hat der Einspritzkanal Verbindung mit vier radialen Düsenkanälen, wie dem Düsenkanal 46. Diese Düsenkanäle werden bei eingezogenem Kolben 27 durch die Gießformhälfte 2 verschlossen und bei ausgefahrenem Kolben 27 zum Gießformraum 3 hin geöffnet.The nozzle head 28 shown in FIGS. 9 and 10 has a cylindrical shape Part 42 and an annular flange 43, which is at the right end of part 42 located. The ring flange 43 has an annular groove 44 on the end face for inserting one O-seal, not shown, that the sealing of the injection channel 22 on the part 37 serves. The ring flange also has a semicircular recess in the lower region 45 for locking the nozzle head 28 against rotation on the nozzle head holder 29 by means of the locking pin mentioned. At the left end of the Part 42, the injection channel is connected to four radial nozzle channels, such as the nozzle channel 46. These nozzle channels are 27 when the piston is retracted closed by the mold half 2 and with the piston 27 extended to Casting mold room 3 open.

Claims (10)

Verfahren zum Eingeben eines Trennmittels in eine einen Gießformraum (3) und einen Entlüftungskanal (12) aufweisende Gießform (1, 2) und in den Gießzylinder (5) einer Druckgießmaschine, bei der während des Gießvorgangs für den Spritzling über den Entlüftungskanal (12) Luft aus der Gießform (1, 2) abgesaugt wird und bei der zwischen solchen Gießvorgängen in die Gießform das Trennmittel eingespritzt wird und Mittel zur Absaugung des Trennmittels vorgesehen sind, wobei die Einspritzung des Trennmittels (17) bei geschlossener Gießform (1, 2) erfolgt und gleichzeitig eine Absaugung dieses Mittels aus dem Gießformraum (3) über den Entlüftungskanal (12) stattfindet,
dadurch gekennzeichnet, dass die Einspritzung des Trennmittels über einen besonderen, in der Gießform angeordneten Kanal (16) und die Absaugung des Trennmittels zusätzlich über eine im Gießzylinder angeordnete Öffnung (8) erfolgt.Method for entering a release agent into a casting mold (1, 2) having a casting mold space (3) and a ventilation duct (12) and into the casting cylinder (5) of a die casting machine, in which air is injected into the mold via the ventilation duct (12) during the molding process is sucked out of the casting mold (1, 2) and in which the separating agent is injected into the casting mold between such casting processes and means are provided for extracting the separating agent, the injection of the separating agent (17) taking place when the casting mold (1, 2) is closed and at the same time this medium is sucked out of the casting mold space (3) via the ventilation duct (12),
characterized in that the injection of the release agent takes place via a special channel (16) arranged in the casting mold and the suction of the release agent additionally takes place via an opening (8) arranged in the casting cylinder. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass das Trennmittel (17) pulverförmig oder flüssig ist.Method according to claim 1,
characterized in that the release agent (17) is powdery or liquid. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Absaugung über zusätzliche Absaugkanäle (10, 11) erfolgt, die einerseits in den Gießformraum (3) und andrerseits in den Entlüftungskanal (12) münden.The method of claim 1 or 2,
characterized in that the suction takes place via additional suction channels (10, 11) which on the one hand open into the casting mold space (3) and on the other hand into the ventilation channel (12). Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Absaugung des Mittels zusätzlich über besondere Absaugkanäle erfolgt.Method according to one of claims 1 to 3,
characterized in that the suction of the agent is also carried out via special suction channels. Druckgießmaschine zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der besondere Einspritzkanal (16) mittels eines Ventils (21) verschließbar ist.Die casting machine for carrying out the method according to one of claims 1 to 4,
characterized in that the special injection channel (16) can be closed by means of a valve (21). Druckgießmaschine zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der besondere Einspritzkanal ein axial in den Gießformraum geführter Kanal (22) ist, der in der ortsfesten Gießformhälfte (1) angeordnet ist.Die casting machine for carrying out the method according to one of claims 1 to 4,
characterized in that the special injection channel is a channel (22) which is guided axially into the mold space and is arranged in the fixed mold half (1). Druckgießmaschine nach Anspruch 6,
dadurch gekennzeichnet, dass der Einspritzkanal (22) mit einer Einspritzvorrichtung (24) gebildet ist, die aus einer Zylinder-Kolben-Einheit (26, 27) und einem mit dem Kolben (27) in Verbindung stehenden Düsenkopf (28) besteht. Die casting machine according to claim 6,
characterized in that the injection channel (22) is formed with an injection device (24) consisting of a cylinder-piston unit (26, 27) and a nozzle head (28) connected to the piston (27). Druckgießmaschine nach Anspruch 7,
dadurch gekennzeichnet, dass die Verbindung des Kolbens (27) mit dem Düsenkopf (28) über einen Düsenkopfhalter (29) erfolgt, in den der Düsenkopf (28) auswechselbar einlegbar ist.Die casting machine according to claim 7,
characterized in that the connection of the piston (27) to the nozzle head (28) takes place via a nozzle head holder (29) into which the nozzle head (28) can be interchangeably inserted. Druckgießmaschine nach Anspruch 8,
dadurch gekennzeichnet, dass der Düsenkopf (28) als zylinderförmiger Teil (42) ausgebildet ist, der an seinem einen Ende einen Ringflansch (43) zum Einlegen in den Düsenkopfhalter (29) und an seinem anderen Ende mit dem Einspritzkanal (22) in Verbindung stehende, radiale Düsenkanäle (46) aufweist.Die casting machine according to claim 8,
characterized in that the nozzle head (28) is designed as a cylindrical part (42) which is connected at one end to an annular flange (43) for insertion into the nozzle head holder (29) and at its other end to the injection channel (22) has radial nozzle channels (46). Druckgießmaschine nach einem der Ansprüche 5 bis 9,
dadurch gekennzeichnet, dass alle Absaugkanäle (9-13) über ein und dasselbe Filter (14) an eine Unterdruckquelle angeschlossen sind.Die casting machine according to one of claims 5 to 9,
characterized in that all suction channels (9-13) are connected to a vacuum source via one and the same filter (14).
EP01110965A 2000-05-09 2001-05-07 Process and apparatus for supplying mold-release agent to a die casting machine Expired - Lifetime EP1153680B1 (en)

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DE10022328 2000-05-09

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EP1153680B1 EP1153680B1 (en) 2005-08-03

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CN104249145A (en) * 2014-09-11 2014-12-31 东莞市锐风机械有限公司 Head plate of die-casting machine
CN104249145B (en) * 2014-09-11 2016-11-16 东莞市锐风机械有限公司 Die casting machine head plate

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DE50106938D1 (en) 2005-09-08
DE10022328A1 (en) 2001-11-15
ATE301016T1 (en) 2005-08-15

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