EP3763459B1 - Dispositif de coulée et procédé de fabrication d'un composant à partir de matière fondue - Google Patents

Dispositif de coulée et procédé de fabrication d'un composant à partir de matière fondue Download PDF

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Publication number
EP3763459B1
EP3763459B1 EP20184965.0A EP20184965A EP3763459B1 EP 3763459 B1 EP3763459 B1 EP 3763459B1 EP 20184965 A EP20184965 A EP 20184965A EP 3763459 B1 EP3763459 B1 EP 3763459B1
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EP
European Patent Office
Prior art keywords
casting
plunger
mold cavity
melt
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20184965.0A
Other languages
German (de)
English (en)
Other versions
EP3763459A1 (fr
Inventor
Dennis Beverung
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP3763459A1 publication Critical patent/EP3763459A1/fr
Application granted granted Critical
Publication of EP3763459B1 publication Critical patent/EP3763459B1/fr
Active legal-status Critical Current
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines
    • 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
    • B22D17/2023—Nozzles or shot sleeves
    • 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
    • B22D17/203—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
    • B22D17/2038—Heating, cooling or lubricating the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2069—Exerting after-pressure on the moulding material
    • 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
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations

Definitions

  • the invention relates to a casting device for producing a component from a melt, with a casting piston, with a casting channel, with a mold cavity, the melt being able to be supplied to the mold cavity via the casting channel, the casting piston being movable axially in the casting channel, the casting piston being can be moved from a first position to a second position, with the melt being introduced into the mold cavity when the casting piston is moved from the first position to the second position, and the volume that the casting piston moves from the first position to the second position within the Casting channel displaced, corresponds to the volume of the mold cavity, the mold cavity is completely filled with melt in the second position of the plunger.
  • the invention relates to a method for producing a component from a melt with a casting device, with a casting channel, with a casting piston and with a mold cavity for molding the component, the casting piston being moved axially in the casting channel from a first position to a second position , wherein a volume is displaced by the movement of the casting plunger, which volume corresponds to the volume of the mold cavity, wherein melt is promoted from the pouring channel into the mold cavity by the displacement of the volume.
  • liquid metal is introduced into a mold cavity in the form of a melt.
  • the metal can solidify in the mold cavity and, as a finished component, assumes the specified shape of the mold cavity.
  • the liquid melt is introduced into the mold cavity of a die-casting mold by means of a casting plunger under high pressure and at a high mold filling speed.
  • the DE 10 2012 010 923 A1 shows, for example, a conveyor device for molten metal in an injection molding unit.
  • the conveying device has a reservoir for the molten metal and a conveying channel.
  • the molten metal is fed to a mold cavity through the conveying channel.
  • the delivery channel includes a piston that is axially movable in the delivery channel.
  • an inflow channel is formed in the conveying channel which is connected to a reservoir from which the liquid melt can be fed into the conveying channel.
  • the DE 10 2014 018 795 A1 also discloses a conveying device for molten metal in an injection molding unit.
  • the molten metal is pressed into a mold cavity via a feed channel by means of a piston.
  • the piston is located in a cylindrical bore.
  • An exchangeable fitting piece is arranged in the cylindrical bore. The adapter, which is exposed to high thermal stress over time, can therefore be easily replaced.
  • the JP 2006 312181A discloses a casting apparatus having a plunger, a pouring channel and a mold cavity.
  • the pressure in the system increases.
  • a part of the melt then exits via an outlet device, which is realized by a pressure relief valve, a stem and a damping chamber. The aim is to prevent the melt from flowing past the plunger back into the reservoir.
  • the present invention is therefore based on the object of specifying a casting device and a method for producing a component from a melt which can be operated more efficiently with a minimum expenditure of time.
  • the invention is defined by independent claims 1 and 8; the dependent claims describe preferred embodiments.
  • the melt is conveyed into the mold cavity by moving the casting plunger from the first position to the second position.
  • the volume displaced by the plunger corresponds exactly to the filling quantity of the mold cavity.
  • This increases the pressure of the system, since the casting plunger moves against an incompressible medium.
  • an outlet device is provided according to the invention in the area of the pouring channel. Because of the continuity, the melt is consequently conveyed out of the outlet device, as a result of which the pressure can also be kept at a lower level.
  • the part of the melt that emerges from the outlet device corresponds to the volume that the casting plunger displaces when moving from the second position to the third position in the casting channel.
  • One advantage of the invention is that no rework has to be carried out on the finished component, since the desired geometric shape of the component can be achieved in just one method step. Thus, a waste-free production is possible.
  • the pressure of the system can be kept low, since the pressure built up by the casting plunger, which presses the melt into the mold cavity, can be reduced by the outlet device.
  • the outlet device represents the weakest sealing area of the casting device.
  • the casting channel can open directly into the mold cavity. However, it can also be provided that the casting channel and the mold cavity are connected to one another via one or more feed lines. The melt is then conveyed via the pouring channel into the feed line and from there into the mold cavity.
  • the outlet device is formed by leakage gaps between the pouring plunger and the pouring channel. In this way, no further drilling or the like within the plunger is necessary. Normally undesired leakage gaps between the plunger and the pouring channel can be specifically designed so that a certain backflow of the melt past the plunger and back into the pouring channel is possible.
  • the outlet device is formed by a pressure relief valve in the pouring channel.
  • the pressure relief valve can be placed between the plunger and the mold cavity. In this way, the melt flows through the flow channel of the pressure relief valve, without flowing past the plunger if only a small leakage gap is provided between the plunger and the pouring channel.
  • a further embodiment of the casting device according to the invention provides that the casting channel can be heated. This ensures that the melt does not already begin to solidify when it is conveyed through the pouring channel into the mold cavity.
  • an insert part that can be cast around is provided in the mold cavity.
  • Light metal cast components in particular benefit from the insert, which is integrated into the component by casting. In this way, local material improvements can be achieved, such as better wear resistance, greater mechanical strength and thermal stability.
  • the casting device according to the invention can also be operated automatically.
  • a drive preferably an electric drive, is provided for moving the casting plunger. Due to the low viscosity of the melt, the process can be adjusted in each cycle so that more volume is dosed than is necessary to completely fill the mold cavity. This additional volume then in turn dissipates via the outlet device with comparatively little pressure once the formulation has been completed.
  • the drive can also be operated hydraulically, mechanically or by means of another common method. With an appropriate system design, the system pressures can be limited as described by the targeted use of the outlet device and by the design of the drive, e.g. to protect inserts and system components from high loads.
  • a heatable storage container is provided in a further embodiment of the invention, which is connected to the pouring channel so that melt can be conveyed from the storage container into the pouring channel.
  • the material is completely melted in the storage container.
  • the melt can directly or flow into the pouring channel via a corresponding filling line.
  • a hole can be provided in the pouring channel.
  • a non-return valve is provided at the transition from the storage container to the pouring channel.
  • the check valve remains in the blocking position when the plunger is moved from the first position to the second position or third position. In the meantime, the mold cavity is filled with melt.
  • the check valve opens so that melt can flow from the reservoir into the casting channel. Further feeds can open into the reservoir.
  • a drain line is provided back into the reservoir. The discharge line can also be heated so that the liquefied melt can be pumped into the storage tank without any problems and the next casting process can be continued without waiting times.
  • the invention relates to a method for operating a casting device for producing a component from a melt, in which the previously derived object is achieved.
  • the method according to the invention is first and foremost characterized in that the casting plunger is moved from the second position to a third position, that the volume that the casting plunger moves from the first position to the second position and from the second position to the third position within the pouring channel is displaced is greater than the volume of the mold cavity and that the volume of the melt, which is displaced when moving from the second position to the third position, through an outlet device provided in the area of the pouring channel, from which Mold cavity is conveyed.
  • the method can be carried out with a casting device as described above.
  • the statements relating to the casting device according to the invention also apply correspondingly to the method according to the invention. All statements made in relation to the casting device are also valid for the method according to the invention and vice versa.
  • the pouring channel is heated.
  • the pouring channel can be heated before the actual pouring process, during the pouring process and even after the pouring process. A heating before and during or before and during and after or during and after the casting process is possible. The heating ensures that the melt does not solidify in the pouring channel, so that no residues are deposited on the pouring channel walls.
  • a castable insert is introduced into the mold cavity. This insert is then cast around during the casting process.
  • Figures 1a to 1c show a casting device 1 with a casting plunger 2 which is arranged in a casting channel 3 .
  • a component is cast in a mold cavity 4 .
  • the casting device also has an outlet device 5 from which the melt 6 can emerge.
  • a drive 7 for moving the casting plunger 2 is provided.
  • the melt 6 can be conveyed from a storage container 8 .
  • the casting plunger 2 is arranged in the casting channel 3 in an axially displaceable manner.
  • the casting plunger 2 can be moved from a first position in the direction of the mold cavity 4 into a second position and further in the direction of the mold cavity 4 into a third position by the electric drive 7 .
  • the mold cavity 4 is formed in a tool 9 which is connected to the pouring channel 3 via an inlet channel 10 .
  • the tool 9 can be exchanged, so that a wide variety of geometric shapes are possible for correspondingly cast components.
  • Fig. 1b shows the casting device 1 with the casting plunger 2 in the second position.
  • a certain volume is displaced by the casting plunger 2 .
  • the volume that the casting plunger 2 displaces when moving from the first position into the second position corresponds exactly to the volume of the mold cavity 4, so that the mold cavity 4 is completely filled with melt 6.
  • the path to be covered by the plunger 2 from the first position to the second position can be set by the operator so that the displaced volume of the plunger 2 always corresponds to the volume of the mold cavity 4.
  • Fig. 1c shows the plunger 2 in the third position.
  • the volume that the plunger 2 displaces between the first position and the third position is greater than the volume of the mold cavity 4.
  • the outlet device 5 is designed by means of a leakage gap between the casting plunger 2 and the casting channel 3 .
  • the leakage gap can be designed so that a certain pressure increase is achieved with a corresponding drive power.
  • the casting piston 2 can be exchanged and the leakage gap of the different casting pistons 2 is adapted to different materials, so that other parameters of the process are adapted or remain the same.
  • the outlet device 5 represents the least tightness of the system. At increased pressure, the liquid, incompressible melt 6 is thus pressed through the outlet device. The melt 6 can thus solidify in the mold cavity 4 under pressure.
  • the reservoir 8 is also heated.
  • it can be a heatable crucible in which the material to be cast is completely melted.
  • the reservoir 8 is connected to the pouring channel 3 by means of a bore 11 .
  • the bore 11 is arranged in the pouring channel 3 in such a way that the mold cavity 4 and the plunger 2 are located between the bore 11 when the plunger 2 is in the first position. In the second position or in the third position of the plunger 2, the bore 11 is covered by the plunger 2, so that no melt 6 can be conveyed from the storage container 8 into the pouring channel 3.
  • FIG. 3 shows a casting device 1 similar to the exemplary embodiment shown in FIGS 1c .
  • the casting plunger 2 which can be moved translationally in the casting channel 3 , is driven by the drive 7 .
  • the pouring channel 3 can be heated, so that it is possible to completely melt different materials, primarily metal alloys.
  • the pouring channel 3 is connected to the tool 9 which has the mold cavity 4 .
  • the outlet device 5 is arranged in the form of a pressure relief valve between the mold cavity 4 and the pouring channel 3 .
  • the outlet device 5 allows the liquid melt 6 to flow back into the storage container 8 via a discharge channel 12 .
  • the discharge channel 12 is additionally heated so that the melt 6 remains liquefied and the next casting process can be started.
  • FIG 3 shows the embodiment according to FIG 2 .
  • the bore 11 is not covered by the plunger 2 when the plunger 2 is in the second position or in the third position.
  • the bore 11 is equipped with a check valve 13.
  • the check valve 13 remains in the blocking position when the casting plunger 2 is moved from the first position to the second position or third position. During this time the mold cavity 4 is filled with melt 6 .
  • the check valve 13 opens so that melt 6 can flow from the reservoir 8 into the casting channel 3 .

Landscapes

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

Claims (10)

  1. Dispositif de coulée (1) destiné à la réalisation d'un composant à partir d'un bain de fusion, ledit dispositif de coulée comprenant un piston de coulée (2), un conduit de coulée (3), une cavité de formage (4), la matière en fusion pouvant être amenée à la cavité de formage (3) par le conduit de coulée (3), le piston de coulée (2) pouvant être déplacé axialement dans le conduit de coulée (3), le piston de coulée (2) pouvant être déplacé d'une première position à une deuxième position, la matière en fusion étant introduite dans la cavité de formage (4) lorsque le piston de coulée (2) est déplacé de la première position à la deuxième position, et le volume que le piston de coulée (2) chasse lorsqu'il se déplace de la première position à la deuxième position à l'intérieur du conduit de coulée (3) correspondant au volume de la cavité de formage (4), le piston de coulée (2) pouvant être déplacé de la deuxième position à une troisième position, le volume que chasse le piston de coulée (2) lorsqu'il se déplace de la première position à la deuxième position et de la deuxième position à la troisième position à l'intérieur du conduit de coulée (3) étant supérieur au volume de la cavité de formage (4) et un moyen de sortie (5) étant prévu dans la zone du conduit de coulée (3), lequel permet à la matière en fusion de sortir de la cavité de formage (4) lorsque le piston de coulée est dans la troisième position,
    caractérisé en ce que
    le moyen de sortie (5) est formé par des interstices de fuite entre le piston de coulée (2) et le conduit de coulée (3).
  2. Dispositif de coulée (1) selon la revendication 1, caractérisé en ce que le moyen de sortie (5) est en outre formé par une soupape de surpression dans le conduit de coulée.
  3. Dispositif de coulée (1) selon la revendication 1 ou 2, caractérisé en ce que le conduit de coulée (3) peut être chauffé.
  4. Dispositif de coulée (1) selon l'une des revendications 1 à 3, caractérisé en ce qu'un insert coulable est prévu dans la cavité de formage (4).
  5. Dispositif de coulée (1) selon l'une des revendications 1 à 4, caractérisé en ce qu'un entraînement (7), de préférence un entraînement électrique (7), est prévu pour déplacer le piston de coulée (2).
  6. Dispositif de coulée (1) selon l'une des revendications 1 à 5, caractérisé en ce que le conduit de coulée (3) est relié à la cavité de formage (4) de manière à ce que, lorsque le piston de coulée (2) est déplacé de la deuxième position ou de la troisième position à la première position, un volume libre est créé entre le conduit de coulée (3) et la cavité de formage (4).
  7. Dispositif de coulée (1) selon l'une des revendications 1 à 6, caractérisé en ce qu'un réservoir chauffable (8) est prévu qui est relié au conduit de coulée (3) de sorte que la matière en fusion puisse être transportée du réservoir (8) jusque dans le conduit de coulée (3).
  8. Procédé de fonctionnement d'un dispositif de coulée destinée à la réalisation d'un composant à partir d'une matière en fusion, le dispositif de coulée (1) comportant un piston de coulée (2), un conduit de coulée (3) et une cavité de formage (4) destiné au formage du composant, le piston de coulée (2) étant déplacé axialement dans le conduit de coulée (3) d'une première position à une deuxième position, le déplacement du piston de coulée (2) chassant un volume qui correspond au volume de la cavité de formage (4), le déplacement du volume transportant la matière en fusion du conduit de coulée (3) jusque dans la cavité de formage (4),
    caractérisé en ce que
    le piston de coulée (2) est déplacé de la deuxième position à une troisième position, le volume que chasse le piston de coulée (2) de la première position à la deuxième position et de la deuxième position à la troisième position à l'intérieur du conduit de coulée (3) est supérieur au volume de la cavité de formage (4), le volume de la matière en fusion qui est chassé lors du déplacement de la deuxième position à la troisième position, est transporté hors de la cavité de formage (4) à travers un moyen de sortie (5) prévu dans la zone du conduit de coulée (3), et l'excès de matière en fusion est ramené dans le conduit de coulée par le moyen de sortie en passant par le piston de coulée.
  9. Procédé selon la revendication 8, caractérisé en ce que le conduit de coulée est chauffé avant, pendant et/ou après le processus de coulée.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce qu'un insert coulable est introduit dans la cavité de formage.
EP20184965.0A 2019-07-12 2020-07-09 Dispositif de coulée et procédé de fabrication d'un composant à partir de matière fondue Active EP3763459B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU101305A LU101305B1 (de) 2019-07-12 2019-07-12 Giessvorrichtung und Verfahren zum Herstellen eines Bauteils aus einer Schmelze

Publications (2)

Publication Number Publication Date
EP3763459A1 EP3763459A1 (fr) 2021-01-13
EP3763459B1 true EP3763459B1 (fr) 2022-08-31

Family

ID=67539552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20184965.0A Active EP3763459B1 (fr) 2019-07-12 2020-07-09 Dispositif de coulée et procédé de fabrication d'un composant à partir de matière fondue

Country Status (5)

Country Link
EP (1) EP3763459B1 (fr)
CN (1) CN112207249B (fr)
HU (1) HUE060494T2 (fr)
LU (1) LU101305B1 (fr)
PL (1) PL3763459T3 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1046444B1 (fr) * 1999-04-20 2002-03-06 Ritter Aluminium Giesserei Gmbh Procédé de coulée sous pression
JP4319996B2 (ja) * 2004-03-18 2009-08-26 株式会社木村工業 成型装置
DE102005010838B4 (de) * 2005-03-07 2007-06-06 Hydro Aluminium Alucast Gmbh Gießform, Vorrichtung und Verfahren zum Vergießen von Metallschmelze
JP2006312181A (ja) * 2005-05-09 2006-11-16 Nissin Kogyo Co Ltd 鋳造装置
EP2113360B1 (fr) * 2008-04-30 2013-07-17 Röchling Automotive AG & Co. KG Dispositif de coulée doté d'une cavité annexe pouvant être chauffée
DE102012010923A1 (de) 2012-06-04 2013-12-05 Gebr. Krallmann Gmbh Fördervorrichtung für eine Metallschmelze in einem Spritzdruckaggregat
CN102873842A (zh) * 2012-09-06 2013-01-16 戴桂芬 一种注射成型装置
DE102012025117B4 (de) * 2012-12-21 2022-01-13 Illinois Tool Works Inc. Gießwerkzeug zur Herstellung eines Bauteils in einem Gasinnendruck-Spritzgussverfahren
DE102014018795A1 (de) 2014-12-19 2016-06-23 Gebr. Krallmann Gmbh Fördervorrichtung für eine Metallschmelze in einem Spritzgussaggregat
CN106001428B (zh) * 2016-06-29 2018-05-08 共享装备股份有限公司 过滤网支撑座、浇注系统及浇注方法

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Publication number Publication date
PL3763459T3 (pl) 2022-12-05
CN112207249B (zh) 2022-05-10
EP3763459A1 (fr) 2021-01-13
CN112207249A (zh) 2021-01-12
LU101305B1 (de) 2021-01-14
HUE060494T2 (hu) 2023-03-28

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