EP3122494B1 - Vorrichtung zum druckgiessen eines metallischen bauteils - Google Patents

Vorrichtung zum druckgiessen eines metallischen bauteils Download PDF

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Publication number
EP3122494B1
EP3122494B1 EP15707393.3A EP15707393A EP3122494B1 EP 3122494 B1 EP3122494 B1 EP 3122494B1 EP 15707393 A EP15707393 A EP 15707393A EP 3122494 B1 EP3122494 B1 EP 3122494B1
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EP
European Patent Office
Prior art keywords
cavity
valve
supply channel
feed channel
valve body
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
EP15707393.3A
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German (de)
English (en)
French (fr)
Other versions
EP3122494A1 (de
Inventor
Hubert Lang
Lucas Schulte-Vorwick
Richard Schächtl
Jean-Marc Segaud
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Publication date
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Publication of EP3122494A1 publication Critical patent/EP3122494A1/de
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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
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • 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
    • 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
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272—Sprue channels
    • 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
    • B22D17/2272—Sprue channels
    • B22D17/2281—Sprue channels closure devices therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment

Definitions

  • the present invention relates to a device for die casting a metallic component.
  • Die casting is an industrial casting process for the mass production of components.
  • molten metal is pressed into the cavity of a die casting mold under high pressure of approx. 10 to 200 MPa and at a high mold filling speed of up to 120 m / s, where it then solidifies. It is with a permanent form, i.e. without model, worked.
  • comparatively large and geometrically complex shaped components which are produced by means of die casting, require a comparatively large sprue system.
  • the material in the sprue system solidifies together with the material that forms the actual component and must be subsequently removed. This represents a considerable processing effort.
  • the ratio of the sprue mass to the mass of the component to be manufactured is one and larger. Die casting therefore generates more material waste than material is used for the component. This is uneconomical for several reasons. On the one hand, significantly more material has to be melted down for each component than is actually required for the component. Furthermore, the material waste must be disposed of after being separated or melted down again for reuse. Furthermore, the feed channels are regularly designed with comparatively large flow diameters in order to keep the cooling of the melt in the sprue system and the flow resistance as low as possible. As a result of In large-volume design, however, the melt solidifies in the sprue system regularly significantly later than in the cavity of the die-casting mold itself.
  • cycle times that can be achieved are thus limited by the time required for the material in the sprue system to solidify. Furthermore, the size of the die-casting mold and the closing forces required for closing the two-part die-casting mold, and thus the system expenditure, are increased by the sprue system.
  • the disadvantages caused by the sprue system of a die casting device can in principle also occur in the technologically similar injection molding of plastics.
  • this can be avoided by designing an injection molding device with a so-called hot runner system.
  • the sprue system is at a higher temperature and thermally insulated than the rest of the injection molding tool. This prevents the material from solidifying in the sprue system. It is therefore available for the injection molding of a subsequent component.
  • Valves which are arranged in the transition from the sprue system to the cavity, decouple the solidifying material in the cavity from the material in the sprue system and enable the solidified component to be removed from the mold without the sprue. Due to the elimination of a solidified sprue on the component, the above-mentioned Disadvantages are avoided.
  • the object of the invention was to provide a possibility for implementing a hot runner system which is known in principle and is practically implemented in plastic injection molding when pressure-casting metal components.
  • a device for die-casting a metallic component with a die-casting mold that has a cavity that forms the component, the cavity being connected to a source for a molten metal via at least one temperature-controlled feed channel and the molten metal being introduced into the cavity via at least one pouring valve ,
  • the feed channel forms an annular channel in which molten metal can be permanently conveyed in the circuit by means of a conveying device.
  • a number of advantages can be generated by designing the feed channel as an annular channel.
  • this enables the permanent conveyance of the material located in the feed channel and thus also when no material is being introduced into the cavity, as is the case, for example, when the material in the cavity hardens to form the component or when the component is removed from the mold. Permanent conveyance and thus movement of the material in the feed channel ensures thorough mixing and thus also prevents local hardening of the material in the feed channel.
  • DE 103 59 692 A1 discloses a device for die casting a metallic component with a die which has a cavity which forms the component, the cavity being connected to a source for a metal melt via a temperature-controlled feed channel [26] and the metal melt being introduced into the cavity via at least a pouring valve is made from the EP 2 835 192 A1 (State of the art according to Art. 54 (3) EPC), a die casting device with a ring line is disclosed, pumping means being provided in the form of coils for conveying or heating the melt.
  • the pressure conditions in the feed channel can be influenced better due to the annular configuration. This applies in particular if, as is preferably provided, more than one conveyor device is provided. Influencing the pressure conditions in the feed channel can be particularly advantageous if, as is preferably provided, a plurality of pouring valves are arranged distributed along the feed channel.
  • the metal melt can in particular be a melt of a light metal, in particular aluminum or magnesium, or an alloy comprising such a light metal.
  • the feed channel is integrated in a stationary part of the die casting mold.
  • the die-casting mold then also has at least one mobile part, which can be removed from the stationary part in order to enable the component to be removed from the mold.
  • the source for the molten metal comprises a retention space and a metal melt reservoir which is separably connected to the retention space.
  • the separation of the source for the molten metal into a storage space and a molten metal reservoir makes it possible to isolate a defined amount of the molten metal in order to subsequently introduce a corresponding amount of the molten metal into the cavity in order to pressure-cast the component.
  • the metal melt contained in the storage space can be discharged into the feed channel by means of pressure generating means.
  • the pressure generating means can preferably be at least one piston, which can in particular be designed to be hydraulically displaceable in order to change the volume of the reserve space.
  • a controllable valve can be provided which, if necessary, closes or at least partially opens a transition opening formed between the retention space and the metal smelting reservoir.
  • the feed channel opens into the reserve space at at least two points.
  • the reserve space can advantageously be integrated into a circulation promotion of the molten metal in the feed channel. In particular, this can also positively influence the introduction of the molten metal into the cavity via several pouring valves, since the flow paths of the molten metal from the storage space to the individual pouring valves can be kept comparatively short.
  • the feed channel is formed in at least one section from pipe sections, in particular straight pipe sections and from connecting pieces connecting the pipe sections.
  • a feed channel can be formed which is of simple construction and at the same time can compensate for the considerable loads which are exerted by the molten metal on the components forming the feed channel, in particular the different thermally-induced elongations.
  • the ends of the pipe pieces are inserted into corresponding receiving openings of the connecting pieces.
  • a defined longitudinal mobility of the ends of the pipe sections can be provided in the receiving openings, in order to be able to compensate for different thermally induced elongations of the pipe sections on the one hand and of the connecting pieces on the other hand.
  • the connecting pieces integrate a curved channel section and / or a pouring valve.
  • the integration of curved sections of the feed channel and of functional elements of the device thus preferably takes place in the connecting pieces, which may be of larger volume.
  • the pipe pieces and the connecting pieces are each formed at least to a large extent from the same material.
  • a ceramic material such as aluminum titanate and / or silicon nitride, can be used in particular as the material for the pipe pieces and / or for the connecting pieces.
  • the conveyor device is designed to be electromagnetically active. This is designed in such a way that moving magnetic fields are generated, which cause the movement of the molten metal by the action of magnetic force. This enables all parts of the conveyor to be positioned outside the molten metal. A positioning of conveying elements, such as a pump wheel, within the molten metal can thereby be avoided.
  • a pouring valve for a device can preferably have a valve body which is movable transversely and in particular perpendicularly to the longitudinal axis of the feed channel and which, in a closed position, closes an outlet opening connecting the feed channel to the cavity and at least partially opens the outlet opening in an open position.
  • a valve seat is formed for the valve body, which is designed to widen in the direction of the feed channel.
  • a head of the valve body can be designed to taper in the direction of the cavity.
  • the quality of the component to be produced can be positively influenced in a known manner by post-compression of the molten metal introduced into the cavity. In particular, a reduction in pores and air pockets can be achieved.
  • a device for recompression of the molten metal introduced into the cavity can be carried out at several suitable locations on the casting mold.
  • it may be advantageous to integrate a hold-down piston which can be moved into a position projecting into the cavity into the pouring valve and in particular the valve body.
  • the replenishing piston can be moved into a gating system that is present anyway (but according to the invention is very small in volume) between the outlet of the pouring valve and the cavity of the casting mold. This not only avoids an additional surface defect on the component caused by the pressure piston, but also, if necessary, also further reduces the volume of the sprue system and thus a sprue remaining on the component.
  • the valve body and / or the plunger can preferably be actively operable independently of one another in both directions (retraction and extension).
  • at least one corresponding actuating device can be provided, which can particularly preferably be designed to act hydraulically.
  • provision can preferably be made to thermally isolate the actuating device (s) from the feed channel in order to keep the thermal load on the actuating device as low as possible as a result of heat transfer from the molten metal guided in the feed channel.
  • the thermal insulation can, for example, by constructive separation Intermediate arrangement of insulating elements or air-filled spaces.
  • the Fig. 1 shows schematically an inventive device for die casting a metallic component.
  • the device comprises a die 1, which can be exchangeably stored in a press device 2. To replace it, the die 1 can be moved out of or into the press device, for example along the double arrow 3.
  • the die-casting mold 1 comprises an in the Fig. 1 shown lower part, which is fixed with a in the Fig. 1
  • the stationary part of the press device 2 shown can be connected, and an upper part, not shown, which can be firmly connected to a mobile part of the press device 2, not shown.
  • the die-casting mold can be closed by moving the mobile part of the press device 2 by means of hydraulic cylinders 4, the upper part of the die-casting mold 1 then sealingly resting on the lower part of the die-casting mold 1.
  • a largely closed cavity 5 is formed centrally within the die 1, which represents the negative shape of the component to be produced.
  • a feed channel 6 for molten metal, from which the component is to be die-cast is integrated.
  • the integration into the stationary lower part of the die 1 is preferably carried out.
  • the integration of the feed channel 6 into the die 1 can be provided interchangeably, for example by replacing the corresponding elements (pipe pieces 7 and connecting pieces 8) of the feed channel 6 in corresponding receiving openings or recesses Base body of the die 1 are arranged.
  • the feed channel is composed, on the one hand, of straight pipe sections 7 and connecting pieces 8. How from the Fig. 4 results, the connection between the pipe sections 7 and the connecting pieces 8 takes place by inserting one end of a pipe section 7 adjoining a connecting piece 8 into a corresponding receiving opening of this connecting piece 8. It can be provided that the receiving openings have a defined oversize in both radial and have the longitudinal axial direction of the pipe sections 7 in order to compensate for a thermally induced elongation of these elements that occurs during operation.
  • a seal between the outside of the inserted ends of the pipe sections 7 and the inner walls of the corresponding receiving openings can be provided by a separate sealing element 9, for example in the form of a metal O-ring, in particular a so-called Wills ring.
  • channel sections 10 which are curved by 90 ° are integrated.
  • a pouring valve 11 is integrated in each of the two connecting pieces 8 arranged in the center.
  • the pouring valves 11 serve to introduce the metal melt contained in the feed channel 6 into the cavity 5 in a defined manner during the die casting of the component. If the cavity 5 is filled, it is separated from the feed channel 6 by closing the pouring valves 11. As a result, the metal melt contained in the cavity 5 can harden independently of the metal melt contained in the feed channel 6, and the component can be removed from the mold after the hardening.
  • the connecting pieces 8 are actively heated.
  • each include a heating device, not shown. This can in particular be operated electrically. In contrast, no active heating is provided for the pipe sections 7 (but possible). These are thus only passively heated by heat transfer from the molten metal and thereby brought to a temperature which corresponds approximately to that of the connecting pieces 8.
  • the pipe sections 7, but optionally also the connecting pieces 8 can be provided on the outside with thermal insulation.
  • a connecting piece 8 is also shown, which serves only as a connecting sleeve 12 for two pipe pieces, and thus does not integrate a curved channel section 10 nor a pouring valve 11.
  • Such a connector 8 can be used in particular to keep the length of the individual pipe pieces 7 connected to it short.
  • the pipe pieces 7 and the connecting pieces 8 are formed as largely as possible from the same material.
  • a ceramic material such as aluminum titanate and / or silicon nitride, may be particularly suitable for this.
  • Such a ceramic material can be characterized in particular by good high-temperature resistance and good chemical resistance to the molten metal (in particular in the case of an aluminum-molten metal).
  • the device according to the invention also comprises a supply and feed part 13.
  • a source for the molten metal is integrated in this.
  • the source comprises a storage space 14 tempered by, in particular, an electrical heating device and a metal melt reservoir 15.
  • the storage space 14 is connected in a fluid-conducting manner to the metal melt reservoir 15 via a transfer line 16, the fluid-conducting connection being closable as required by means of a controllable melt valve 17, as a result of which a pressure-resistant separation between the retention space 14 and the metal smelting reservoir 15 can be reached.
  • the retention space 14 is connected to the section of the feed channel 6 formed in the die casting mold 1 via two connection sections 18 of the feed channel 6 which are also tempered.
  • the connecting sections 18 are connected via preferably automatically releasable coupling devices 20 to the section of the feed channel 6 integrated in the die 1.
  • the metal melt reservoir 15 is designed as a container which is open at the top and which can be filled in a known manner, for example using a metering spoon or a metering oven.
  • the transfer line 16 goes off at the bottom of the metal melt reservoir 15 and leads to a transfer opening 21 which opens at the lowest point into the cylindrically designed storage space 14.
  • the transfer opening 21 is closed or opened by means of a casting piston 22 depending on the switching position of the melt valve 17.
  • the reserve space 14 is first filled.
  • the melt valve 17 is opened, as a result of which the retention space 14 is filled by the hydrostatic pressure of the metal melt contained in the metal melt reservoir 15.
  • the fill level in the metal melt reservoir 15 should always be at least as high as the highest point of the storage space 14. Venting of the holding space 14 during the pre-filling with molten metal can take place via the feed channel 6 and the opened pouring valves 11 (or one or more separate (not shown) venting valves).
  • an operation of the conveying devices 19, in which both convey in the direction of the storage space 14 can overflow of molten metal entering the storage space 14 from the metal melt reservoir 15 via the connecting sections 18 into the section of the die mold 1 integrated into the die casting mold 1 Feed channel 6 prevented and thus a largely complete pre-filling of the reserve space 14 can be achieved.
  • the feed channel 6 can then be filled with the molten metal.
  • the melt valve 17 is opened again and, at the same time, the two conveying devices 19 are switched in such a way that they convey molten metal in the direction of the feed channel 6 (ie “forward”).
  • the pre-filling of the holding space 14 ensures an uninterrupted suction of molten metal from the molten metal reservoir 15.
  • the conveying devices 19 can be operated at full power, which leads to a filling of the feed channel 6 with the molten metal under a pressure of, for example, a maximum 5 bar can lead.
  • one of the conveying devices 19 is operated further forward with a reduced power of, for example, 20%, while the second conveying device 19 continues to convey forward with increased, for example full power.
  • This circuit of the conveyor devices 19 is referred to below as a "circulation circuit".
  • the circulation circuit of the conveying devices 19 creates a pressure difference between the two connecting sections 18 of the feed channel 6, which ensures a constant circulation of the molten metal in the feed channel 6 (together with the storage space 14) forming an annular channel.
  • a casting piston 22 is extended with a filled supply space 14 and feed channel 6 by means of a hydraulic drive 23, in particular, in such a way that the metal melt contained in the feed space 14 and the feed duct 6 is pressurized. Then the pouring valves 11 are opened and the quantity of molten metal required for the casting is pushed into the feed channel 6 via the pouring piston 22. After the cavity 5 has been completely filled with the molten metal, the pouring valves 11 close again. During the die casting, the circulation circuit of the conveyor devices 19 remains activated.
  • the reserve space 14 can then be refilled in order to prepare the die-casting of a further component.
  • the melt valve 17 is opened and the casting piston 22 is retracted, so that molten metal - supported by the hydrostatic pressure - is sucked into the reservoir 14 from the metal reservoir 15.
  • the reserve space 14 is filled with a quantity of molten metal which corresponds approximately to the quantity of the material required for the component.
  • the volume and thus the amount of molten metal that can be introduced into the holding space 14 can be adjusted via the position of the retracted casting piston 22.
  • the melt valve 17 is closed.
  • the circulation circuit of the conveying devices 19 also remains activated. As a result of the forward conveying of both conveying devices 19, it can be avoided that the feed channel 6 is partially emptied when the reserve space 14 is refilled and that for filling the Rather, the holding space 14 needs to be drawn in exclusively from the metal melt reservoir 15.
  • the feed channel 6, the retention space 14 and, if appropriate, also the metal melt reservoir 15 should be emptied.
  • both conveying devices 19 are switched backwards and the melt valve 17 and, for ventilation, the pouring valves 11 (or the separate vent valves) are opened.
  • the molten metal is then conveyed into the molten metal reservoir 15 by means of the conveying devices 19.
  • the metal melt reservoir 15 and also the retention space 14 can be completely emptied by opening a drain valve 24 integrated in the transfer line 16.
  • the empty die 1 can be automatically uncoupled and moved out of the press device 2.
  • FIGS 5a to 5f The actuation of a pouring valve 11 as part of the die casting of a component is shown in FIGS 5a to 5f shown in six steps or switch positions.
  • the shows Fig. 5a the switching position of the pouring valve 11, in which it is located, while the cavity 5 of the die 1 is prepared for die casting. This can be cleaned and sprayed with a release agent.
  • a valve body 25 of the pouring valve 11 is in a position closing an outlet opening 26 of the pouring valve 11.
  • a plunger 27 is positioned in an extended position in the direction of the cavity 5. The plunger 27 projects beyond the valve body 25 into a sprue section 28 of the cavity 5.
  • the plunger 27 is first moved into a retracted position (cf. Fig. 5b ) and then the valve body 25 is also moved into an open position (cf. Fig. 5c ).
  • valve body 25 is first closed (cf. Fig. 5d ) and then extend the plunger 27 (cf. Fig. 5e ).
  • the metal melt in the cavity 5 recompressed, which benefits the quality of the die-cast component in a known manner.
  • the switch position according to the Fig. 5e is maintained until the material in the cavity 5 has solidified and cooled in a defined manner and can thus be removed from the mold.
  • the plunger 27 is moved into the retracted position (cf. Fig. 5f ).
  • FIGS 6 to 11 A possible embodiment of the pouring valve 11 is shown in FIGS 6 to 11 shown in different views and sectional views.
  • the pouring valve 11 comprises a housing 29, which can also be a housing of the corresponding connector 8 of the feed channel 6 or which is integrated in an additional housing of such a connector 8.
  • the housing 29 comprises two housing parts 30, 31.
  • a first housing part 30 integrates a first through opening, which forms a section of the feed channel 6, and two receiving openings 32, which each serve to receive one end of a pipe section 7 of the feed channel 6 (cf. Fig. 4 ). Furthermore, a second through opening is integrated into this first housing part 30, which runs perpendicular to the first through opening and forms the outlet opening 26 of the pouring valve 11 in one section and serves to guide the movable valve body 25 in another section.
  • a section of the outlet opening 26 lying adjacent to the first through opening is designed to taper in the direction of the cavity 5. This section of the outlet opening 26 serves as a valve seat for the valve body 25. Its front end, which faces the outlet opening 26, is also designed to be tapered.
  • the angle that the conical lateral surface of the valve body 25 forms with the longitudinal axis of the valve body 25 is smaller than the angle that the conical wall section of the outlet opening 26 forms with the longitudinal axis of the outlet opening. Furthermore, it can be provided that the conical section of the lateral surface of the valve body 25 and / or the conical wall section of the outlet opening 26 have a slightly curved course, as a result of which a secure, full contact of the valve body 25 in the valve seat can be guaranteed.
  • a second housing part 31 comprises two actuating devices in the form of coaxially aligned hydraulic cylinders.
  • a first hydraulic cylinder which is closer to the first housing part, serves to move the valve body 25, while the pressure piston 27 can be moved via the second hydraulic cylinder.
  • the end of the pressing piston 27, which is spaced apart from the cavity 5 is directly connected to a piston 33, which can be displaced within a cylinder tube 34 by generating a pressure difference on the two sides separated from the piston 33.
  • the first hydraulic cylinder also comprises a piston 35 which is displaceable within the cylinder tube 41 of the first hydraulic cylinder by generating a pressure difference.
  • the annular disk-shaped piston 35 is movably guided on the plunger 27, which thus extends through the first hydraulic cylinder, but without influencing its function.
  • the piston 35 of the first hydraulic cylinder is connected to the valve body 25 via three rods 36, which are positioned at a uniform division around the pressure piston 27.
  • the 12 to 20 still show various alternative embodiments for pouring valves 11, which are in the inventive device according to the Fig. 1 can be used.
  • the show 12a and 12b a pouring valve 11, in which a cylindrical valve body 25 is movably mounted perpendicular to the longitudinal axis of the section of the feed channel 6 formed by a housing 29 of the pouring valve 11.
  • the outlet opening 26 of the pouring valve 11 is cylindrical with an approximately the outer diameter of the valve body 25 corresponding inner diameter executed. In the closed position, the valve body 25 closes the outlet opening 26 by radial contact with its inner wall (cf. Fig. 12b ).
  • the outlet opening 26 is of stepped design and comprises a first section adjacent to the cavity 5, in which the inside diameter is smaller than the outside diameter of the valve body 25.
  • Located adjacent to the feed channel 6 is a second section of the outlet opening 26, in which the inside diameter is slightly larger than the outside diameter of the valve body 25. In the closed position of the valve body 25, it therefore rests on the end face against the shoulder formed between the two sections of the outlet opening 26.
  • valve body 25 is arranged around a perpendicular to the longitudinal axis of the portion of the feed channel 6 formed by the housing 29.
  • the valve body 25 comprises a first through opening 38 extending in the direction of the longitudinal axis of the section of the feed channel 6.
  • a second through opening 39 extends from this first through opening 38 in an eccentric arrangement with an orientation extending perpendicular to the longitudinal axis of the first through opening 38.
  • This second through opening 39 merges into the outlet opening 26 in the open rotational position of the valve body 25, as a result of which the feed channel 6 is connected to the outlet opening 26 in a fluid-conducting manner via the two through openings 38, 39.
  • the maximum outside diameter of the valve body 25 is smaller than the width or the diameter of the portion of the feed channel 6 formed by the pouring valve 11.
  • the pouring valve 11 shown comprises a valve body 25 in the form of a displaceable valve plate arranged on the outside on the housing 29 of the pouring valve 11.
  • a valve body 25 in the form of a displaceable valve plate arranged on the outside on the housing 29 of the pouring valve 11.
  • two outlet openings 26, which are arranged offset in the direction of the longitudinal axis of the portion of the feed channel 6 formed by the pouring valve 11, are provided, which are in the open position of the valve plate with a respective through opening 40 in the valve plate. Moving the valve plate into a closed position leads to the outlet openings 26 being covered by the valve plate.
  • the pouring valve 11 shown uses a socket-shaped valve body 25 which bears against the wall of the section of the feed channel 6 formed by the pouring valve 11.
  • the socket-shaped valve body 25 comprises a radially extending through opening 40 which is in an (open) rotational position in overlap with the outlet opening 26.
  • the pouring valve 11 shown also comprises a socket-shaped valve body 25 with a through opening 40 which can be brought into overlap with the outlet opening 26, in which case the opening or closing of the pouring valve 11 by moving the socket-shaped valve body 25 in the direction of the longitudinal axis of the section formed by the pouring valve 11 of the feed channel 6 is effected.

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  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP15707393.3A 2014-03-24 2015-03-04 Vorrichtung zum druckgiessen eines metallischen bauteils Active EP3122494B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014205388.9A DE102014205388A1 (de) 2014-03-24 2014-03-24 Vorrichtung zum Druckgießen eines metallischen Bauteils
PCT/EP2015/054458 WO2015144398A1 (de) 2014-03-24 2015-03-04 Vorrichtung zum druckgiessen eines metallischen bauteils

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Publication Number Publication Date
EP3122494A1 EP3122494A1 (de) 2017-02-01
EP3122494B1 true EP3122494B1 (de) 2020-07-08

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US (1) US10092950B2 (zh)
EP (1) EP3122494B1 (zh)
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WO2015144398A1 (de) 2015-10-01
CN105848809A (zh) 2016-08-10
EP3122494A1 (de) 2017-02-01
US10092950B2 (en) 2018-10-09
CN105848809B (zh) 2018-06-08
DE102014205388A1 (de) 2015-09-24
US20170008078A1 (en) 2017-01-12

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