WO2015155170A1 - Machine de coulée sous pression et procédé de coulée sous pression pour la production de pièces de fonte - Google Patents

Machine de coulée sous pression et procédé de coulée sous pression pour la production de pièces de fonte Download PDF

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Publication number
WO2015155170A1
WO2015155170A1 PCT/EP2015/057485 EP2015057485W WO2015155170A1 WO 2015155170 A1 WO2015155170 A1 WO 2015155170A1 EP 2015057485 W EP2015057485 W EP 2015057485W WO 2015155170 A1 WO2015155170 A1 WO 2015155170A1
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WO
WIPO (PCT)
Prior art keywords
casting
mold
die casting
casting machine
cavities
Prior art date
Application number
PCT/EP2015/057485
Other languages
German (de)
English (en)
Inventor
Rupert Frech
Original Assignee
Bühler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bühler AG filed Critical Bühler AG
Publication of WO2015155170A1 publication Critical patent/WO2015155170A1/fr

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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
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2053—Means for forcing the molten metal into the die using two or more cooperating injection pistons
    • 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
    • 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
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • 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
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B22D17/266—Mechanisms or devices for locking or opening dies hydraulically

Definitions

  • the present invention relates to a die casting machine and a die casting method for more efficient and economical production of die cast components.
  • Die casting machines are used for the production of metallic castings such as engine blocks.
  • WO 2008/131571 A1 describes a horizontal two-plate die-casting machine.
  • This two-plate die casting machine comprises a movable clamping plate (BAP) and a fixed clamping plate (FAP), to each of which a
  • Mold half is arranged.
  • the die By moving the movable platen, the die can be opened and closed.
  • the closed position the two clamping plates are pressed firmly against one another so that the two mold halves form a closed mold.
  • a molten metal is introduced under pressure and cooled to solidify.
  • the solidified casting can be removed after opening the mold (by moving the movable platen).
  • the movement of the movable platen takes place in the machine according to WO
  • the shape formed by the two mold halves can be configured differently.
  • the cavities may have the same dimensions (allowing simultaneous production of components of the same shape), or alternatively, the cavities may have different dimensions (thereby enabling the simultaneous production of components of different shapes).
  • the trend in the automotive industry is to produce castings such as structural components, engine blocks or gearbox housing ever larger ⁇ and thin-walled.
  • the size of a component which can be produced in the conventional die casting method has its limits in that during the casting process, the molten metal must be able to flow in cavities in the casting mold and to be able to completely fill them. For this purpose, the molten metal during the casting process but only a short period available.
  • the pressure should be increased examples, with which the metal ⁇ melt is pressed into the mold, as hereinafter be ⁇ but performs a disadvantageous increase of the clamping force to be applied would result.
  • the closing pressure required for holding the mold halves together during the casting cycle increases.
  • the pressure applied to the melt during the casting cycle pressure and tivity of the dimensions of the catalog (s) is formed dependent. From this pressure results the so-called explosive force which would move the two mold halves apart during the casting cycle, if one did not keep the mold halves closed by applying a closing force exceeding the explosive force. Since the closing force can not be arbitrarily increased, but depends on the size of the die casting machine, the dimensions of the cavity (s) are set in a conventional die casting machine .
  • shock tower shock tower
  • front and rear front and rear and side member
  • end wall end wall
  • a die casting machine comprising a movable platen and a fixed platen, a arranged on the movable Aufspannplat ⁇ te mold half and arranged on the fixed platen mold half, characterized in that the pressure ⁇ casting machine at least two, preferably two Casting drives and an analogous number of Giessgar- nituren assigned to the casting drives has.
  • the present invention is based on the idea that not all Kavi ⁇ activities of a die-casting mold with a single Giessantrieb to fill, but to use at least two Giessantriebe for filling the cavities.
  • connection paths Zvi ⁇ rule Giessgarnituren and cavities are reduced because the molten metal no longer has starting to flow from a Giessantrieb in all wells but may be starting channeled by several ⁇ ren different Giessantrieben in different cavities.
  • the aid of the diecasting machine according to the invention it is possible to carry out the production of castings in different cavities during a casting cycle with such a time delay that the entire casting cycle can be carried out with a lower closing force.
  • the Ka ⁇ vticianen can be sequentially filled by different Giessantriebe, so to be compensated explosive force occurs only in the filled cavities and the total explosive power can not be compensated, which would occur at the same time fuel ⁇ len of all existing cavities. This will be explained in detail below.
  • the aid of the diecasting machine according to the invention it is thus possible to produce significantly more castings at the same time within one casting cycle, without an increase in the closing force being required for this purpose.
  • a "casting unit” is understood as the entirety of all components of a die-casting machine which are used for the movement of a casting piston and for the pressurization of the molten metal.
  • a casting drive an inventive die casting machine includes a hydraulically operated übli ⁇ chproof casting cylinder having arranged therein moveable drive piston, a shot valve for controlling the movement of the drive piston in the casting cylinder and an accumulator.
  • a casting unit comprises further components such as a guide frame, tie rod, hydraulic tank, and a hydraulic control block.
  • a Giessgarnitur consists of a Giess- piston rod, which is coupled at its one end to the drive piston casting cylinder, a casting piston which is coupled to the mold-side end of the casting piston rod, and a casting chamber in which the casting piston can move and filled in the casting chamber Melt through his movement in the
  • the casting chamber is connected to at least one mold cavity in the die casting mold.
  • the invention is any Giessantrieb a shot assembly zugeord ⁇ net, that is a respective shot assembly is the link be- see a particular Giessantrieb and the pressure casting mold.
  • the skilled person is familiar with casting units, casting drives and casting installations. Die casting machines are well known. A distinction is made between the casting assembly between a cold chamber and a hot chamber die casting machine.
  • the casting is casting machine at a hot-chamber pressure held in a crucible with ge ⁇ schmolzenem metal.
  • a casting piston moves into the casting container and forces the molten metal through a likewise at least partially disposed in the crucibles Giess ⁇ container in the mold. Casting containers and casting pistons are permanently exposed to molten metal in this process.
  • the shot assembly of a hot chamber die casting machine is fundamentally ⁇ additionally designed differently than that of a cold-chamber die casting machine.
  • the metal is melted in a separate apparatus and kept warm in a molten state in a holding furnace.
  • the amount of molten metal required for producing the desired component is introduced into a cold casting chamber via a filling opening and pressed into the casting mold with the aid of a casting piston movably arranged in the casting chamber.
  • Cold chamber and hot chamber die casting machines are well known to those skilled in the art. According to the present invention, cold chamber die casting machines are preferred.
  • the present invention may be practiced with horizontal die casting machines or vertical die casting machines. Horizontal die casting machines are preferred according to the invention.
  • Die casting machines are designed as so-called 3-plate machines or 2-plate machines.
  • the movable platen In a 3-plate machine, the movable platen is moved on usually four Füh ⁇ approximately columnar means of an additional third plate supported on a toggle lever mechanism relative to the fixed clamping plate.
  • the closing force is also generated via the Kniehebelme ⁇ mechanism.
  • the moving platen In a two-platen machine, the moving platen is moved on usually four guide columns by means of a motor and lock cylinder.
  • the closing force is transferred to the movable platen with the aid of tensioning cylinders, with which the guide columns can be fixed to the movable platen.
  • 2-plate die casting machines are preferred.
  • a preferred 2-plate die casting machine is described in WO 2008/131571 AI.
  • the present invention can be carried out both with conventional die casting machines and with vacuum die casting machines or other special designs of die casting machines.
  • the person skilled in the corresponding die casting machines are known.
  • the shot assembly is disposed on the fixed platen and connected via a Verbin ⁇ dung channel with the cavity in the plane formed by the two mold halves in the closed condition form.
  • the inventive die casting machine has at least two casting drives.
  • the die casting machine has exactly two casting drives. If necessary, however, further casting drives may also be present, so that the die-casting machine according to the invention may preferably have from 2 to 10 casting drives. Since, according to the invention, each casting is associated with a casting set, as described above, the die casting machine according to the invention has the same number of casting sets, ie at least two, preferably two to ten and more preferably exactly two casting sets.
  • the Giessgarnituren the die casting machine according to the invention should preferably be ⁇ such arranged on the fixed platen that the flow paths of the molten metal are kept as short as possible.
  • the two or in each case two Giessgarnituren (and accordingly ⁇ the associated Gielichriebe) horizontally publishedeinan ⁇ or vertically stacked or diagonally above each other arranges, preferably symmetrically about the center of the back surface of the fixed platen. More preferably, the two or two sets of plugs each are placed close to (ie spaced typically 10 to 50 cm apart, depending on the size of the plumbing fixtures) about the center of the back surface of the fixed platen.
  • the fixed platen be arranged, for example in the left or right part of the back surface of the fixed platen.
  • the die casting machine preferably comprises a fixed clamping plate, which has recesses and / or fastening devices for the at least two, preferably two, casting drives.
  • the Giessgarnituren are arranged on the fixed platen, that part of the shot assembly, typically the casting chamber, arranged in a recess in the fixed platen, and there is buildin ⁇ account during die casting machines.
  • the arranged in the fixed platen part of the Giessgarnitur can protrude from the side remote from the casting drive side of the fixed platen and protrude into an opening of the form on the inside of the fixed platen mold half, or with this opening via a connecting channel be connected. It is also possible to assign the casting completely outside the fixed platen on the back to ⁇ and secure. Can be in this case, appropriate connection channels are provided in the fixed platen through which molten metal from the casting chamber into the mold be ⁇ promotes.
  • the Giessgarnituren in this case have an opening which communicate with a corresponding opening of a connecting channel.
  • Giessgarnituren it may be necessary to strengthen the fixed platen or to produce a firmer material. Corresponding measures are known to the person skilled in the art and can be routinely implemented.
  • the Giessgarnituren can be fed from the same container with molten metal. But it is also possible to provide for each Giessgarnitur a separate storage container for molten metal, from which the corresponding Giess- garnish is charged with molten metal.
  • the molten metal can be produced from all the metals and metal alloys conventionally used in pressure casting. But it can also be used for example salt mixtures for the production of salt cores.
  • a plurality of cavities provided in a casting mold are preferably filled with the aid of the at least two, preferably two, casting drives. Molds with multiple cavities are known. A distinction is made between so-called multi-cavity molds (as shown by way of example in FIG. 4 a) in which a particular cavity is present in the mold several times, and so-called combination molds or unit molds (as shown by way of example in FIG. 5 a in which different cavities in FIG With multicavity molds, a particular casting can be made in a single casting cycle in multiple runs
  • Giesszyklus be made in multiple copies.
  • combination molds or unit molds casting molds having a larger number of cavities or having larger cavities can be used with the die casting machine according to the invention.
  • the use of such molds is not possible with conventional pressure casting molds due to the significant increase in the explosive force associated with the use of such casting molds and the high closing force to be applied for compensation.
  • the present invention thus also relates to a mold for a die casting, made up of two mold halves, which together at least one, preferably provides a plurality of cavities, characterized in that the mold comprises Minim ⁇ least two, preferably two openings, through which the mold filled with molten metal is.
  • a casting mold according to the invention comprises, like conventional casting molds, two mold halves which can each be arranged on a movable and a fixed clamping plate of a die casting machine.
  • Each mold half comprises on its inside, ie the side which is not attached to the movable or fixed platen, one or more recesses, wel ⁇ che in the state of joining the two mold halves form the mold cavity (s).
  • Each mold half also comprises on its inside one or more recesses which form connecting channels in the state of joining the two mold halves, which lead to at least two, for example 2 to 10 and preferably two openings, which is present in the mold half to be arranged on the fixed platen and by which molten metal can be filled into the mold cavity (s).
  • the casting molds which can be used according to the invention thus have a plurality of openings, so that cavities present in the casting mold can be replaced by several different ones Casting drives can be filled simultaneously during a casting cycle.
  • Embodiments of molds which can be used according to the invention are explained in more detail below with reference to FIGS. 4b and 5b.
  • the mold comprises at least two cavities of the same dimension, which can be filled with molten metal through separate openings.
  • This embodiment is modeled on a conventional multi-cavity mold.
  • the casting mold comprises at least two cavities of different dimensions, which can be filled with molten metal through separate openings.
  • This embodiment is modeled on a conventional combination or unit shape.
  • the number of cavities provided in the casting mold depends on the size of the castings to be produced and can be, for example, 2 to 10, preferably 2 to 4.
  • a significant advantage of the diecasting machine according to the invention is that the casting process in the mold cavities can be carried out sequentially, ie not all of the mold cavities present are simultaneously filled with molten metal. This ensures that the explosive force during the casting process also only sequen ⁇ tially arises, namely at the positions of the just filled with metal melt ⁇ cavities.
  • a die-casting machine in which the movable clamping plate is guided along preferential way four guide columns is movable, and in addition preferably on the movable platen fastening devices, preferably clamping cylinders, are arranged for the preferably four guide columns.
  • a corresponding die casting machine is known from WO 2008/131571 AI.
  • the locking force he ⁇ required is provided by the guide columns are firmly fixed to the movable clamping plate in the closed state, preferably via arranged on the movable on ⁇ clamping plate clamping cylinder. Since preferably the passages for the four guide columns and the corresponding clamping cylinders are located at the four corners of the movable platen, the resulting forces are absorbed evenly by the movable platen and ensures stable operation of the die casting machine.
  • only cavities can be filled in egg ⁇ nem first step of the casting cycle which are located in the upper part of the mold.
  • the diameters of the guide columns can be reduced by 20-40%, preferably 20-30%, and the dimensions of the clamping plates increased by 20-40%, preferably 20-30%.
  • the present invention further relates to a process for the production of castings in a die casting process, preferably with a die casting machine described above, comprising the steps
  • step c) optionally repeating step c) to the fully ⁇ constant filling of all cavities;
  • the term "substantially” so to be interpreted gene that encompassed deviations of ⁇ 10% of the solidification time of the on ⁇ -section of the casting formed in the antecedent step in a portion of a cavity or cavities.
  • a “casting cycle” is understood to mean a process sequence which begins with the closing of the casting mold by the beginning of the movement of the movable clamping plate in the closed position and with the removal of the casting mold
  • a casting cycle according to the invention thus comprises the steps the closure of the mold by movement of the movable platen in the closed position, ie until the mold halves touch,
  • molten metal must be metered into the casting chambers of other casting sets and from to transport there by means of the or the other Giessantriebe in other mold cavities.
  • Casting is basically known.
  • a molten metal is usually produced in a separate container and then filled with suitable aids (for example a ladle or a dosing oven) through an opening in the casting chamber.
  • the filling of cavities of a mold is also known.
  • a casting piston arranged in a casting cylinder, the other end of which is in a position in the casting chamber in which molten metal can be filled through the filling opening in the casting chamber, is moved into the casting chamber by the action of force, preferably hydraulically.
  • the casting piston passes through the filling opening in the casting chamber and closes it against the environment.
  • the casting piston is moved into the casting chamber in three different phases, applying different pressures and velocities. In the first phase a slower flow of the casting piston in the casting chamber is carried out until the metal ⁇ melt to the inlet into the mold cavity (ie up to the stop section) has been conveyed.
  • the mold cavity is very quickly (typically within 10 to 120 ms, depending on the wall thickness and the flow length) be ⁇ filled by the casting piston is moved very quickly forward.
  • a high pressure typically greater than 200 bar to 1200 bar
  • the casting piston is applied to the casting piston, whereby the during the phase transition of the molten metal from liquid to solid in the mold cavity resulting volume loss is compensated by make-up of molten metal.
  • Shock absorber bridges two side members instead of a conventional castable side member, or two panel carriers instead of a conventionally castable panel carrier are produced in a casting cycle.
  • this increase in production is carried out as above enables the fact that the existing Kavticianenschreib be sequenced ⁇ tially filled with different Giessantrieben.
  • a time delay is maintained, which essentially corresponds to the solidification time of the gating of the casting formed in the previous step in a part of a cavity or cavities.
  • this time delay is preferably 2 to 10 seconds, more preferably 3 to 6 seconds.
  • the interface of the respective casting between casting and connecting channel understood which is formed by solidification of the molten metal outside the mold cavity (s), ie in the connecting channels to the one or more mold cavities.
  • the gate is removed from the casting at the end of the actual casting cycle.
  • metal melt can be metered into the casting chamber of the next casting assembly in the period of the time delay between the filling steps, with the aid of which the filling of the next part of a cavity or cavities is to take place.
  • the next dosing step begins at the same time
  • the required closing force can be provided locally limited by the guide columns are firmly fixed to the movable platen in closed form ⁇ closed state, preferably on at the movable Chen clamping plate arranged clamping cylinder, but only on those clamping cylinder in the vicinity of the moment filled with molten metal cavity (s).
  • a first step of the casting cycle only cavities which are located in the upper part of the casting mold can be filled.
  • gegebe ⁇ sufficient to provide the clamping force, to provide them only by closing the two clamping cylinder at the upper corners of the movable platen.
  • the inventive method is preferably controlled by means of ei ⁇ ner corresponding software, as sold, for example, by the applicant under the name Dat @ net.
  • each casting drive is independently controlled and regulated.
  • the die-casting machine according to the invention is comparatively compact, since only short distances between mold cavities and corresponding casting chambers have to be provided. This also reduces the metal consumption (less burnup, less melting) as well as the energy costs associated with melting or burning. Due to the above compact te construction also ensures gets fed that the optimum amount of metal melt ⁇ when sen erfindungsgemäs- method, each casting. In contrast to conventional die casting processes, there are no problems with multiple casts in cavities which are far away from the casting system or in an unfavorable position / position.
  • the die casting machine according to the invention and the method according to the invention can be used in particular for the production of castings required in large quantities.
  • the present invention thus also relates to the use of a previously be registered ⁇ die casting machine or an above-described ⁇ NEN mold for producing cast pieces, preferably castings for the automotive industry or the electronics sector.
  • the present invention is for the produc- ⁇ ment of structural parts in the automotive sector of the compact or upper middle class and can thus make an important contribution to the achievement of C0 2 goals.
  • the present invention With the present invention, larger and thinner-walled components can be cast, which can meet the automotive industry's need for part integration.
  • extremely large castings can be produced by casting such a component by means of several casting drives. Examples include the entire rear part of a Automo ⁇ bils, tomobil called the two longitudinal members and a cross-connection for a Au in one piece or two shock absorbers bridges connecting end wall in a casting.
  • the present invention also hard to be supplied, preferably made thick-walled castings ⁇ , the example by a Giessantrieb as the main Giessantrieb and another Giessantrieb be used as a power supply unit for the thick-walled section.
  • components can intermittently (ie, it would in a casting cycle, a casting and to mirror ⁇ pictorial casting produced, for example on the left and right side of a vehicle to be incorporated same components) to be "just in time” manufactured. This reduces the effort for an otherwise required conversion of the die casting machine (in conventional die casting machines, the casting mold usually has to be changed for batch production).
  • castings of different metal alloys may be produced in a mold cavity, for example by a portion of the casting with a fed from a first Giessantrieb metal alloy and another portion of the casting with at ⁇ thereof, a second Giessantrieb fed metal alloy is poured.
  • This is particularly advantageous for castings with different requirements in the various component zones (normal strength, high strength, ductile and high ductile in the crash area).
  • the present invention thus also relates to a casting, preferably produced by the above described procedural, characterized in that the cast piece is in one piece and comprises at least two portions which are composed of different ⁇ union materials, preferably of different metals or metal alloys , According to the invention, the Casting 2 to 10, preferably have exactly two such different ⁇ different sections.
  • integral is meant in this context that the casting is made in a single step, for example in a mold cavity during a casting process and is not made from two separately produced components ge ⁇ by subsequently joining together of the separate components.
  • FIG. 3 shows another schematic embodiment of the inventive die casting machine with two horizontally juxtaposed Giessantrieben and Giessgarnuren
  • Fig. 4a shows a schematic embodiment of a conventional
  • FIG. 4b shows a schematic embodiment of a multicavity casting mold according to the invention
  • Fig. 5a shows an embodiment of a conventional combination casting mold 5b shows an embodiment of a combination casting mold according to the invention
  • a conventional die casting machine is shown, as described for example in WO 2008/131571 AI.
  • a die-casting machine is preferably equipped and used with at least two casting drives and correspondingly at least two casting sets.
  • a two-plate horizontal die casting machine is ge shows ⁇ which a machine bed 1 with a perpendicular to it being ⁇ arranged fixed platen (FAP) 2 on, and a on the machine bed 1 slidably movably arranged movable on ⁇ bolster plate (BAP) 3 having.
  • the BAP 3 has a, preferably closed frame with two feet 7, struts 5 and ribs 6 and an ejector unit 14 for ejecting molded components.
  • FAP 2 and BAP 3 are each a mold half of a mold 16 are arranged.
  • the BAP 3 is guided in four columns 8, which in turn are stored in the FAP 2.
  • Each column 8 is a, arranged on the BAP clamping device 9 to ⁇ ordered, by means of the closing force is applied to the je ⁇ particular column 8 during firing.
  • the pillar protection tube 4 integrated into the BAP 3 prevents contamination of the column toothing.
  • Between the lower columns 8 a lock cylinder 10 is provided between the lower columns 8 a lock cylinder 10 is provided.
  • Column ejection cylinders 13, which are arranged or fastened to the latch 11 or the BAP 3, are arranged on the column coupling 12.
  • a drive group 15 is provided on the machine bed 1.
  • FIG. 1 shows an embodiment of the pressure casting machine according to the invention with two vertically stacked ones
  • the casting chamber 19a contains the end of a casting piston whose other end is arranged in a casting cylinder 18a and can be hydraulically operated there.
  • the casting chamber 19b contains the end of a casting piston whose other end is arranged in a casting cylinder 18b and can be hydraulically operated there.
  • the casting chambers are in this embodiment symmetrically around the center of the fixed platen 2 angeord ⁇ net and secured in corresponding recesses in the fixed platen 2.
  • the casting chambers can always be located anywhere on the fixed clamping plate in the area between the guide columns.
  • the exact configuration of the diecasting machine according to the invention can be adapted depending on the casting to be produced.
  • a here only schematically indicated component 17 represents the üb ⁇ rigen components of the casting drives (hydraulic drive).
  • FIG. 3 shows a further embodiment of the erfindungsgemäs ⁇ sen die casting machine with two horizontally arranged adjacently ⁇ Giessantrieben and Giessgarnituren is shown, which are arranged on a die casting machine according to FIG. 1.
  • the same reference numerals in Figs. 1 to 3 denote the same components.
  • the casting chambers are arranged side by side symmetrically about the center of the fixed platen 2 and fixed in ent ⁇ speaking recesses in the fixed platen 2.
  • FIG. 4 a shows a schematic embodiment of a conventional multi-cavity casting mold 20.
  • the casting mold has a plurality of (here 6) identical cavities 21 whose dimensions correspond to the dimensions of the castings to be produced.
  • the cavities 21 are connected to one another and to an opening 23 via connection channels 22.
  • the opening 23 is for Giessantrieb open when the mold is being ⁇ belongs to the die casting machine 20, and can be filled with molten metal from Giessantrieb. From the opening 23, the molten metal under pressure flows through the connection channels 22 into the cavities 21.
  • FIG. 4b shows a schematic embodiment of a multicavity casting mold 24 according to the invention, wherein identical reference symbols in FIGS. 4a and 4b denote the same components.
  • the inventive mold 24 includes two ⁇ ffnun ⁇ gen 23a and 23b, which are in contact with cavities 21a and 21b via respective connecting channels 22a and 22b.
  • Each of the openings 23a and 23b is open to one of the casting drives, when the mold 24 is arranged in the die casting machine, and can be filled with molten metal from these casting drives. From the openings 23a, 23b, the molten metal under pressure flows through the connection channels 22a, 22b into the cavities 21a and 21b.
  • cavities 21a and 21b can be provided than in the conventional mold 20.
  • the number of possible cavities 21a and 21b may vary.
  • the inventive mold 24 according to FIG. 4b the upper cavities 21a can be filled independently of the lower cavities 21b by a separate casting drive, and vice versa.
  • FIG. 5 a shows an embodiment of a conventional combination casting mold 25.
  • the casting mold has a plurality of (here 3) identical cavities 21 and a cavity 26 different therefrom, the dimensions of which correspond to the dimensions of the castings to be produced.
  • the cavities 21 and 26 are connected to each other and to an opening 23 via connecting channels 22.
  • the opening 23 is open to the casting drive when the casting ⁇ form 25 is arranged in the die casting machine, and can be filled by the casting drive with molten metal. From the opening 23, the molten metal under pressure flows through the connection channels 22 into the cavities 21 and 26.
  • FIG. 5b shows an embodiment of a combination casting mold 27 according to the invention, the same reference symbols in FIGS. 5a and 5b designating the same components.
  • the casting mold 27 according to the invention has two openings 23a and 23b, which are in contact with cavities 21 and 26 via respective connecting channels 22a and 22b.
  • Each of the openings 23a and 23b is open to one of the casting drives, when the mold 27 is arranged in the die casting machine, and can be filled with molten metal from these casting drives.
  • Publ ⁇ voltages 23a, 23b of the pressurized metal ⁇ melt flows through the communication ports 22a, 22b into the cavities 21 and 26th
  • FIG. 5b shows schematically and exemplarily 4 cavities 21, but as stated above, the number of possible cavities 21 can vary.
  • the inventive Giess ⁇ form a larger cavity 26 than the conventional mold 25.
  • the right cavities 21 can be filled by a separate Giessantrieb independent of the left cavity 26, and vice versa ,

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

La présente invention concerne une machine de coulée sous pression comprenant un plateau mobile (3) et un plateau fixe (2), un demi-moule (16) disposé sur le plateau mobile (3) et un demi-moule (16) disposé sur le plateau fixe (2). L'invention est caractérisée en ce que la machine de coulée sous pression comporte au moins et de préférence deux entraînements de coulée (17; 18a, 18b) et un nombre analogue de garnitures de coulée (19a, 19b) associées aux entraînements de coulée (18a, 18b). La présente invention concerne en outre un procédé de production de pièces de fonte selon un procédé de coulée sous pression, de préférence au moyen d'une telle machine de coulée sous pression, et un moule de coulée (25, 27) destiné à une machine de coulée sous pression, ainsi que l'utilisation d'une telle machine de coulée sous pression ou d'un tel moule de coulée (25, 27) pour la production de pièces de fonte, de préférence de pièces de fonte pour le secteur de l'automobile ou de l'électronique.
PCT/EP2015/057485 2014-04-08 2015-04-07 Machine de coulée sous pression et procédé de coulée sous pression pour la production de pièces de fonte WO2015155170A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14163832.0A EP2929957A1 (fr) 2014-04-08 2014-04-08 Machine et procédé de coulée sous pression pour la fabrication de plusieurs pièces de fonderie
EP14163832.0 2014-04-08

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WO2015155170A1 true WO2015155170A1 (fr) 2015-10-15

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DE202017101592U1 (de) * 2017-03-20 2018-06-25 Martin Baumann Druckgussform
CN108672673A (zh) * 2018-08-03 2018-10-19 襄阳美利信科技有限责任公司 一种压铸机的双冲头压射结构
CN112427616A (zh) * 2020-10-20 2021-03-02 深圳领威科技有限公司 压铸机及压铸方法

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CN108637204A (zh) * 2018-07-13 2018-10-12 安徽思源三轻智能制造有限公司 一种冷室压铸机
CN114603103A (zh) * 2022-03-10 2022-06-10 宁波力劲科技有限公司 一种多工位冷室压铸机头板及冷室压铸机

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EP0928653A1 (fr) * 1998-01-09 1999-07-14 Gut Giesserei Umwelt Technik GmbH Procédé de fabrication d'un composant gradient à l'état semi-liquide
JP2003164954A (ja) * 2001-11-30 2003-06-10 Nissan Motor Co Ltd ダイカスト装置及びダイカスト方法
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DE202017101592U1 (de) * 2017-03-20 2018-06-25 Martin Baumann Druckgussform
CN108672673A (zh) * 2018-08-03 2018-10-19 襄阳美利信科技有限责任公司 一种压铸机的双冲头压射结构
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US11440088B2 (en) 2020-10-20 2022-09-13 Shenzhen Leadwell Technology Co., Ltd. Die casting machine and die casting method

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