EP3330020B1 - Dispositif de moulage et procédé de moulage - Google Patents

Dispositif de moulage et procédé de moulage Download PDF

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Publication number
EP3330020B1
EP3330020B1 EP16202301.4A EP16202301A EP3330020B1 EP 3330020 B1 EP3330020 B1 EP 3330020B1 EP 16202301 A EP16202301 A EP 16202301A EP 3330020 B1 EP3330020 B1 EP 3330020B1
Authority
EP
European Patent Office
Prior art keywords
mold
casting
pressure
base body
die
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
EP16202301.4A
Other languages
German (de)
English (en)
Other versions
EP3330020A1 (fr
Inventor
Josef Gartner
Werner Hubauer
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.)
Mubea Performance Wheels GmbH
Original Assignee
Mubea Performance Wheels GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mubea Performance Wheels GmbH filed Critical Mubea Performance Wheels GmbH
Priority to PL16202301T priority Critical patent/PL3330020T3/pl
Priority to EP16202301.4A priority patent/EP3330020B1/fr
Priority to CA2986576A priority patent/CA2986576A1/fr
Priority to BR102017025522-0A priority patent/BR102017025522A2/pt
Priority to CN201711245628.8A priority patent/CN108145128B/zh
Priority to MX2017015567A priority patent/MX2017015567A/es
Priority to TW106142196A priority patent/TWI801360B/zh
Priority to JP2017232504A priority patent/JP6976153B2/ja
Priority to US15/830,615 priority patent/US10195660B2/en
Priority to KR1020170165629A priority patent/KR102437454B1/ko
Publication of EP3330020A1 publication Critical patent/EP3330020A1/fr
Application granted granted Critical
Publication of EP3330020B1 publication Critical patent/EP3330020B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
    • 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
    • B22D17/2236—Equipment for loosening or ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/005—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of rolls, wheels or the like
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/08—Controlling, supervising, e.g. for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices

Definitions

  • the invention relates to a device and a method for producing a metallic component, in particular a light metal wheel.
  • the device comprises a stationary, supported central molded part, a height-adjustable punch and two lateral half-shells.
  • the half-shells have an outer conical surface which can engage in a height-adjustable ring body with a conical inner surface.
  • the method comprises the steps of: pouring a melt into the casting and molding tool at a first pressure, pressurizing the solidifying melt in the tool with a larger second pressure, and compressing the component solidified from the melt in the tool with a larger third pressure.
  • a method for producing a metal die-cast part is known.
  • the mold cavity is filled from below into the casting mold using a metal melt pump. After the casting mold has been filled, the inlet opening is tightly closed. The metal melt enclosed in the mold cavity is then pressurized during the solidification process.
  • a reusable casting and molding tool which is also called a permanent mold
  • the construction of a reusable casting and molding tool is a challenge in view of the various requirements that must be met with regard to manufacturing accuracy, tendency to wear, temperature balance and, if necessary, the tool's suitability for high pressure.
  • the mold comprises a base plate with a central casting nozzle, a vertically movable core and horizontally and vertically movable split mold jaws.
  • the mold jaws are attached to a bridge together with the core and can be moved vertically with it.
  • a head plate can be raised and lowered on the bridge and can be used to move the mold jaws apart via pairs of sliding wedges.
  • the base plate has lateral wedge supports against which the mold jaws with outer wedge surfaces rest in the closed state.
  • a base form is supported on the base plate, with which the core is in abutment contact when the mold is closed.
  • Molds which have ejector pins for ejecting the cast component.
  • Such ejector pins are subject to high wear, especially at high casting pressures, which in turn can lead to casting distortion.
  • a tool for casting a molded part which has a lower part, an upper part and at least two side parts, the tool parts being able to be brought from a casting position defining the geometry of the molded part into a removal position.
  • the upper part and the side parts can be lifted off from the lower part together with the cast molded part.
  • the side parts open in the removal position and release the molded part for ejection or removal.
  • the upper part and the side parts are jointly assigned to a top plate.
  • An opening mechanism which is used to move the side parts apart or open, acts between the top plate and the side parts.
  • An ejector plate comprises ejector pins which, after casting, can be brought into contact therewith in order to eject the molded part.
  • the present invention is based on the object of proposing a device for casting a metallic component which has a simple structure, is subject to only little wear, and with which near-net-shape components can be manufactured with high manufacturing accuracy.
  • the task is also to propose a corresponding method that can be carried out with little wear and with which cast components can be manufactured with high manufacturing accuracy.
  • a casting device for producing a metallic component with an outer undercut comprising: a base body with a first end section and a circumferential side wall, the side wall having an inner surface which tapers in the direction of the first end section; a first mold part which can be inserted into the base body and which forms a first shaping surface for the component to be cast; Several mold side parts which can be inserted into the base body, the mold side parts being supported radially in the inserted state against the circumferential side wall of the base body and forming a mold ring with an inner shaping surface for the component to be cast; a second mold part which can be moved in the mold ring formed by the mold side parts up to a casting position and which forms a second shaping surface for the component to be cast, with the second mold part being axially movable relative to the mold side parts when the mold side parts are inserted into the base body (5) and is arranged in the casting position completely without contact with respect to the first mold part.
  • One advantage of the device is that cast components with one or more undercuts close to the end contour with very good strength properties and high manufacturing accuracy can be produced in an efficient manner. Because the second mold part does not have a defined stop against the first mold part, i.e. it can be moved further from the end position to be set for casting (casting position) in the direction of the first mold part, the component solidifying from the melt can, after the mold cavity has been completely filled, with Pressure can be applied. This can compensate for a temperature-related shrinkage of the component volume. Furthermore, the application of pressure after casting contributes to a fine structure with small crystals, which ultimately leads to good strength properties of the component.
  • the design between the first and second mold parts avoids a static overdetermination of the mold system, which leads to good closing properties.
  • thermal expansion of the mold parts which occurs as a result of the heat input from the melt, is compensated for by independent axial fine positioning of the mold side parts. With greater radial thermal expansion of the mold side parts, they come into contact earlier with the base body, i.e. they penetrate less deeply the main body; In contrast, with lower radial thermal expansion, the mold side parts penetrate deeper into the base body. Depending on the size and shape of the component to be cast, these positioning tolerances can be, for example, about 1/10 or a few tenths of a millimeter. Despite thermal expansion and the associated position tolerances, the mold side parts are always centered with respect to the base body or the first mold part held therein.
  • An actuating device can be provided to generate a relative movement between the second mold part and the first mold part.
  • the second mold part can be moved in the axial direction with the actuating device.
  • the second mold part can be moved in the direction of the base body or the first mold part beyond the end position in order to apply pressure to the component to be cast.
  • the actuating device can also be referred to as a pressure application device.
  • the casting device or the mold parts forming the mold cavity are designed accordingly for pressurization and are suitable for applying or withstanding pressures of at least one bar, in particular more than 10 bar, preferably 10 to 1000 bar, on the workpiece.
  • One or more holding devices can be provided for the mold side parts in order to hold the mold side parts in the inserted state in the closed position when pressure is introduced into the solidifying component via the pressure application device.
  • the holding device (s) can be designed in the form of controllable power units, for example hydraulic actuating cylinders.
  • the first mold part can be, for example, a mold lower part which is held stationary on a carrier.
  • the second mold part would be a mold upper part which can be moved relative to the lower part.
  • a reverse assignment that is to say the first mold part as the upper part and the second mold part as the lower part, is also conceivable.
  • the assignment of which of the two parts is held stationary and which of the two parts is axially movable can be selected as desired.
  • a description such that a component can be moved relative to another component should always also include the kinematic reversal.
  • All castable metals or metal alloys can be used as the material for manufacturing the component.
  • Metal alloys made of light metal such as aluminum, magnesium and / or titanium are particularly suitable for the production of wheels as cast components.
  • the casting device can be designed for the production of components with a weight of, for example, five to 100 kilograms.
  • the shape of the mold parts is adapted accordingly to the shape of the components to be produced, which in principle can be any shape.
  • the casting device is particularly suitable for producing a body with a lateral undercut, in particular a rotationally symmetrical body such as a wheel, without being restricted to this.
  • the casting device is preferably designed such that the mold cavity enclosed by the mold parts has a volume of at least 0.5 liters, in particular at least 3.0 liters, and / or a maximum of 50 liters.
  • the mold cavity can also be designed as a cavity nest, so that several components can be produced simultaneously with one casting process.
  • the number of mold side parts used depends on the shape of the component to be manufactured. For example, two, three, four or more mold side parts can be provided.
  • the individual mold side parts join together in the closed state to form a ring. It is advantageous to provide a uniform division of the individual segments, for example two half-shells or three segments each with 120 ° circumferential extension or four segments with each 90 ° circumferential extension.
  • the device has a mold end ring with a shaping surface that tapers in the direction of the first end section, the mold end ring being supported axially and radially against the base body.
  • the mold end ring can be manufactured as a separate component and inserted into the base body.
  • the mold end ring can also be firmly connected to the base body, in particular by means of screw connections or be designed in one piece with it.
  • the mold end ring can also be firmly connected to the first mold part, in particular in one piece be designed.
  • the mold end ring is supported axially and radially against the base body, indirectly when the mold end ring is assigned to the first mold part, or directly when the mold end ring is assigned to the base body.
  • the mold side parts can have outer contact surfaces that interact with the tapering inner surface of the base body, in particular in such a way that the mold side parts are moved radially inward toward each other when they move axially into the base body and axially dip into the mold end ring.
  • the axial retraction movement defines a closing direction for closing the mold parts which, when completely closed, form the mold cavity for the component to be cast.
  • the shape of the outer contact surfaces of the mold side parts is designed to be opposite to the shape of the inner surface of the base body, which tapers in the closing direction.
  • the outer contact surfaces of the mold side parts and the inner surface of the base body as well as the inner surface of the mold end ring can in particular be designed conical, cone segment-like or wedge-like.
  • the radial gaps formed between the individual mold side parts gradually close until the mold side parts are finally supported against one another in the circumferential direction and form a closed, i.e. gap-free mold ring and the lower ring edge of the mold ring rests against the tapering shaping surface of the mold end ring in a sealing manner .
  • the mold ring formed therefrom is axially and radially supported against the inner surface of the mold end ring which tapers in the closing direction.
  • the inner surface that widens when viewed in the opening direction extends axially beyond the ring edge of the mold ring in the direction of the opening, that is to say that the mold ring and the mold end ring partially overlap axially in the end position.
  • a gap is preferably formed between the lower annular edge of the mold side parts and an end-side shaping surface of the first mold part, which gap forms part of the mold cavity to be poured.
  • the end-side shaping surface can be separated from the tapering inner surface of the mold end ring, which accordingly forms a lateral shaping surface section for the component to be cast over the gap height.
  • the inner molding surface of the mold ring formed by the mold side parts and of the molding surface section of the mold end ring adjoin one another axially and together form a side wall of the mold cavity for the component to be cast.
  • the mold side parts which can also be referred to as mold segments or mold slides, are each fastened to a carrier element, via which an axial movement is initiated.
  • a carrier element is preferably provided for each mold side part, the carrier elements being held so as to be radially displaceable with respect to a stationary holding plate.
  • the mold side parts and the second mold part are moved in the direction away from the base body. This is preferably done by a common axial movement.
  • an axially movable actuating plate can be provided, to which the upper part of the mold is connected, so that it is moved axially together with the actuating plate.
  • one or more ramp arrangements can be provided which are designed to bring about an axial movement of the actuating plate in the opening direction into a radial movement of the carrier elements away from one another or away from the longitudinal axis.
  • the actuating plate preferably has at least one actuating ramp per carrier element, which interacts with a respective corresponding adjusting ramp of the carrier element.
  • the above-mentioned object is also achieved in a method for producing a metallic component by means of a casting device, which can have one or more of the above-mentioned configurations.
  • the mold side parts are retracted in the direction of the base body to close the casting device, the outer surfaces of the mold side parts being guided along the tapering inner surface of the base body, so that the mold side parts are moved radially inward towards one another until the mold side parts in Are supported on one another in the circumferential direction and form a mold ring and the lower ring edge of the mold ring rests against the tapering shaping surface of the mold end ring in a sealing manner.
  • the method can comprise the following steps: die-casting a melt of a metal alloy into the casting device, the melt being introduced into the mold cavity from outside the base body through an opening in the first mold part with a casting pressure, with the mold side parts and the mold upper part being applied a holding pressure is exerted which is greater than the casting pressure; Sensing a pressure signal representing the internal pressure in the mold cavity; Stopping the die-casting or reducing the casting pressure if a sudden increase in pressure is sensed; and, after a predetermined time with reduced pressure, pressurization of the component solidifying from the melt by moving the upper part of the mold relative to the lower part of the mold, the component being subjected to a pressure which is greater than the casting pressure.
  • FIG. 1 A device 2 according to the invention for the shaping production of a component from a metal melt is shown.
  • the device 2 which can also be referred to as a casting and molding tool, comprises a base body 3, into which a first mold part 4, several mold side parts 5 and a further mold part 6 are inserted.
  • the mentioned mold parts 4, 5, 6 together form a mold cavity 7 for the component 8 to be cast in the closed state.
  • the shape of the casting device 2 or the individual mold parts 4, 5, 6 is essentially determined by the shape of the cast component to be produced. All castable metals or metal alloys, which are selected according to the technical requirements of the component 8 to be produced, can be used as the casting material.
  • the mold cavity can, for example, have a volume between 0.5 and 50 liters.
  • the device 2 is designed for the production of rotationally symmetrical bodies in the form of wheels, for which, in particular, metal alloys made of light metal such as aluminum, magnesium, titanium and / or other alloy components are suitable.
  • the rotationally symmetrical component 8 to be produced has a circumferential undercut 11 between two axially end rim flanges 9, 10.
  • the first mold part 4 is arranged below or inserted into the base body 3 from above, which is why it is also used as a Mold lower part can be referred to.
  • the second mold part 6 is arranged above the first mold part 5 and in this respect can also be referred to as the mold upper part. It goes without saying, however, that the arrangement could also be reversed, that is to say the first mold part at the top and the second mold part at the bottom.
  • the base body 3 is cup-shaped and has an end section 12, on which the first mold part 4 is axially supported in a first direction, and a circumferential side wall 13 which extends away from the end section.
  • the end section 12 forms a base with a central opening 14 in which the first mold part 4 is seated in a sealing manner with a connecting section.
  • the first mold part 4 has a central opening 15 through which the molten metal can be pressed from below the mold lower part 4 into the mold cavity 7 with hydraulic pressure.
  • the base body 3 can be attached to a stationary carrier plate 38.
  • the side wall 13 has an inner surface 16 which widens in the direction of the free end of the side wall 13 and which is conical in the present embodiment.
  • the mold side parts 5 are axially supported radially against the circumferential side wall 13 of the base body 3 and form a circumferentially closed mold ring 17 with an inner shaping surface 18 for the component to be cast.
  • the number of mold side parts 5 used is four in the present case, it being understood that a different number such as two, three or more than four can also be used.
  • the division of the individual mold side parts 5 is regular, that is, four segments are provided, each extending over approximately a quarter of the entire circumference.
  • the mold side parts 5 have outer contact surfaces 19 which are designed to correspond to the tapering inner surface 16 of the base body 3 and cooperate with them in a ramp-like manner.
  • the inner surface 16 and the corresponding outer surfaces 19 are conical or conical segment-like, so that the mold side parts 5 when moving axially into the base body 3 radially inward, that is, in the direction of the longitudinal axis A, to be moved towards each other.
  • the mold parts 5 increasingly approach each other until they finally come into contact with one another in the circumferential direction and form a closed, that is to say gap-free mold outer ring 17, as in particular in FIG Figures 8 and 9 recognizable.
  • a mold end ring 20 is provided in an end region of the component 8 to be cast, which has a shaping surface 22 which tapers in the direction of the bottom 12 of the base body 3.
  • the mold end ring 20 is inserted into the base body 3 and firmly connected to it.
  • the connection can be realized in a force-locking manner, for example by pressing in, in a form-locking manner, for example by means of screws, and / or in a material-locking manner, for example by welding.
  • the tapering shaping surface 22 of the mold end ring 20 and the inner surface 16 of the side wall 13 form a common inner guide surface for the mold side parts 5 to be inserted.
  • the mold end ring 20 is an integral part of the base body 3, the shaping surface 22 of the mold end ring 20 forming part of the inner surface 16 of the side wall 13.
  • the casting mold is securely closed with a small gap.
  • the conical surface 19 of the mold ring 17 in interaction with the counter cone 16 of the base body 3 or the mold end ring 20 at the same time ensure good centering of the components mentioned with respect to one another.
  • the axial height of the mold end ring 20 is selected such that the lower ring edge 21 of the mold side parts 5 is arranged in the closed position within the mold end ring 20 and is in sealing contact with its inner surface 22.
  • the surface pairings between the tapering outer surfaces 19 of the mold side parts 5 on the one hand and the inner surface 16 of the base body meet 3 or the inner surface 22 of the mold end ring 20, on the other hand, has a double function, namely that a statically determined sealing stop is formed.
  • a thermal expansion of the mold parts 4, 5 that occurs during casting is compensated for by independent axial fine positioning of the mold side parts 5, the mold side parts 5 being self-centered with respect to the first mold part 4. There is no separate axial end stop for the mold side parts, so that static overdetermination is avoided.
  • annular gap 24 is formed, which forms the part of the mold cavity 7 to be poured out for the rim flange 9.
  • the radially outer end of the shaping surface 23 of the first mold part 4 is laterally bounded by the tapering inner surface 22 of the mold end ring 20, which here forms a lateral shaping surface section for the component 8 to be cast.
  • the inner shaping surface 18 of the mold ring 17 formed by the mold side parts 5 and the shaping surface section of the mold end ring 20 adjoin one another axially and together form an outer side wall of the mold cavity for the component to be cast.
  • An inner side wall of the mold cavity is formed by the second mold part 6, which is moved into the base body 3 and brought into the casting position before casting. This is done by means of a correspondingly suitable actuating device 37.
  • a main retraction movement of the central mold part 6 takes place together with the mold side parts 5.
  • the mentioned mold parts 5, 6 are moved together in the direction of the base body 3 until the mold side parts 5 have reached their end position in which they are supported radially and axially against the base body 3 or against the mold end ring 20.
  • the second mold part 6 can be adjusted even further relative to the mold side parts 5 or relative to the first mold part 4 in order to adjust the mold cavity to the desired dimension.
  • the second mold part 6 is moved axially relative to the first mold part 4 until the required casting position is reached. It is provided that that the second mold part 6 is arranged in the casting position without any contact with respect to the first mold part 4.
  • the upper mold part 6 has, on its end section 28 delimiting the mold cavity 7, a circumferential outer surface 29 which, together with a corresponding circumferential inner surface 30 of the mold ring 17, forms a seal.
  • the two sealing surfaces 29, 30 have an axial overlap in the casting position, so that an exact axial setting of the casting position is possible by a corresponding axial movement of the mold upper part 6 without the sealing function being impaired as a result.
  • the relative movement between the second mold part 6 and the first mold part 4 takes place by means of an actuating device 37, which accomplishes both the main retraction movement and the precise positioning of the mold upper part in the casting position.
  • the actuating device 37 is also suitable for moving the second mold part 6 in the direction of the base body 3 or the first mold part 4 beyond the casting position in order to apply pressure to the component after casting or during solidification.
  • the actuation device 37 is designed to implement various actuation functions, namely the axial movement of the second mold part 6 and the mold side parts 5 in the axial direction, i.e.
  • An associated carrier element 26 is provided for each mold side part 5 in order to transmit a force to the respective mold side part 5 or to move it.
  • the carrier elements 26 are each fastened to an end section of the mold side parts 5, in particular to an end face of the mold side parts 5. The fastening can take place, for example, by means of screws. It is particularly in the Figures 8 and 9 It can be seen that in the present case four mold side parts 5 and correspondingly four support elements 26 are provided.
  • the carrier elements 26 reach with their connecting sections 39 through openings 31 of a stationary holding plate 27.
  • the openings 31 are designed as elongated holes so that the carrier elements 26 can be moved radially with respect to the stationary holding plate.
  • the carrier elements 26 can be acted upon with force or moved by an associated force unit 25, the force unit 25 engaging a connecting section 39 of the respective carrier element 26.
  • the carrier elements 26 are acted upon by the force units 25 at the same time.
  • the force units 25 in particular take on the function of holding the mold side parts 5 in the inserted state in the closed position when pressure is introduced into the solidifying component via the actuating device 37.
  • the force units 25 can also be referred to as holding devices.
  • a ramp arrangement 32 is provided which is designed to bring about an axial movement of the actuating plate 33 in the opening direction R2 and a radial movement of the carrier elements 26 in the direction away from the longitudinal axis A.
  • the actuating plate 33 has two actuating ramps 34 for each carrier element 26, which interact with a respective corresponding adjusting ramp 35 of the carrier element 26.
  • the actuating plate 33 moves axially in the opening direction R2
  • the actuating ramps 35 of the carrier elements 26 slide along the corresponding actuating ramps 34 that slope outward in the radial direction.
  • the carrier elements 26 are acted upon accordingly radially outward by the actuating ramps 34, so that the respective carrier element 26 and the mold side part 5 connected to it are moved radially outward.
  • Figure 3 shows the casting device 2 in the closed state, that is, the mold side parts 5 are retracted to the end position in the base body 3 or the mold end ring 20 and the mold upper part 6 is set to the casting position, so that the desired mold cavity 7 is present.
  • the melt is poured from below through the opening 15 into the mold cavity 7 by means of a suitable device (not shown).
  • the melt can be injected with a liquid pressure of more than 100 bar, in particular more than 150 bar.
  • the metallic melt is preferably pressed into the mold cavity 7 in a semi-solid state, that is to say at a temperature below the liquidus line of the melt.
  • the mold side parts 5 and the mold upper part 4 are acted upon with a counter pressure (holding pressure) which is greater than the casting pressure.
  • the counter pressure for the mold side parts 5 can be introduced into them by means of the force units 25.
  • the counterpressure for the upper part 4 of the mold can be produced by its own weight or via the central actuation unit 37.
  • Pressure sensors are provided which detect a pressure signal representing the liquid pressure in the mold cavity.
  • the melt gradually fills the mold cavity 7 until it is completely filled.
  • the fluid pressure suddenly rises, which means that a measurable hydraulic pressure peak occurs.
  • the casting process is preferably controlled in such a way that when such a pressure peak is sensed, the casting pressure exerted on the melt is initially reduced for a defined time, for example for a period of one to ten seconds.
  • the melt solidifies at least partially, in particular in the area of the rim edges 9, 10.
  • the pressure is then increased again to a pressure that is greater than the casting pressure and can be, for example, more than 500 bar.
  • the pressing pressure is introduced into the workpiece via the second mold part 4.
  • the casting device 2 is opened again. This is done in several sub-steps, as described below.
  • the mold upper part 6 and the mold side parts 5 axially moved out of the mold lower part 4 and the base body 3, respectively.
  • This first extension takes place as a pure axial movement in direction R2.
  • the device 2 is designed in such a way that the mold upper part 6 and the mold side parts 5 are moved relative to the mold lower part 4 and the base body 3.
  • reverse kinematics are also possible, that is to say that the upper part and the side parts are held in a stationary manner and the base body with the lower part received therein is moved.
  • the axially extended position is in Figure 5 shown.
  • the mold side parts 5 are opened, that is to say moved radially outward. This is done by means of the ramp arrangements 32, as described above, in that the carrier elements 26 slide with their adjusting ramps 35 along the respective actuating ramps 34 of the actuating plate 33, a further axial movement of the actuating plate 33 causing the mold side parts 5 to move radially away from the longitudinal axis A. will.
  • the ramp arrangements 32 are dimensioned or designed in such a way that the radial movement generated thereby is greater than the depth of the undercut 11 of the component 8 to be produced
  • Figure 6 a radially open position of the mold side parts 5 is shown, in which the actuating plate 33 with the mold upper part 6 fastened therewith is displaced axially upwards relative to the mold side parts 5, so that the latter are accordingly pushed radially outward.
  • FIG. 10 a detail of a device 2 according to the invention for casting a metallic component is shown in a slightly modified embodiment.
  • the device according to Figure 10 corresponds essentially to the device according to Figures 1 to 9 , to the description of which reference is made to this extent.
  • the same details are provided with the same reference numerals as in the embodiment according to FIGS Figures 1 to 9 .
  • the first mold ring 4 extends radially outward to beyond the inner surface 22 of the mold end ring 20.
  • the mold end ring 20 is fastened to the base body 3 and is supported or braced against the first mold ring 4 at least in the axial direction. This can be done, for example, by means of screws that are inserted from below into the bottom section 12, passed through corresponding through openings in the first mold part 4 and from are screwed into the mold end ring 20 at the bottom. In this way, the mold end ring 20 is firmly braced against the upper side of the first mold part 4, so that a gap formed between these parts is minimal.
  • a radial gap is preferably provided radially on the outside between a circumferential surface of the first mold part 4 and an inner surface of the base body 3, so that thermal expansions of the mold part 4 can be compensated for.
  • the locking can take place solely by applying appropriate axial pressure to the mold side parts 5 and the mold upper part 6, for example by means of hydraulic presses. Due to the non-stop design of the second mold part 6 relative to the first mold part 4, the component 8 can continue to be subjected to pressure after casting and at least partial solidification.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Processing Of Solid Wastes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (15)

  1. Dispositif, destiné à couler un composant métallique doté d'une contre-dépouille extérieure, destiné notamment à fabriquer une roue en métal léger, comprenant :
    un corps de base (3) pourvu d'un premier segment d'extrémité (12) et d'une paroi latérale (13) périphérique, la paroi latérale (13) comportant une surface intérieure (16) qui se rétrécit dans la direction du premier segment d'extrémité (12) ;
    une première partie de lingotière (4), qui est insérable dans le corps de base (3) et qui forme une première surface de façonnage (23) pour le composant (8) à couler;
    plusieurs parties latérales de lingotière (5), qui sont insérables dans le corps de base (3), lorsqu'elles sont insérées, les parties latérales de lingotière (5) s'appuyant en direction radiale contre la paroi latérale (13) périphérique du corps de base (3) et formant une bague de lingotière (17) pourvue d'une surface de façonnage (18) interne pour le composant (8) à couler;
    une deuxième partie de lingotière (6), qui est déplaçable dans la bague de lingotière (17) formée par les parties latérales de lingotière (5) jusqu'à une position de coulée pour la coulée et qui forme une deuxième surface de façonnage (36) pour le composant (8) à couler,
    caractérisé en ce que, dans l'état inséré des parties latérales de lingotière (5) dans le corps de base (3), la deuxième partie de lingotière (6) est déplaçable en direction axiale par rapport aux parties latérales de lingotière (5) et, dans la position de coulée, est placée sans le moindre contact par rapport à la première partie de lingotière (4).
  2. Dispositif selon la revendication 1,
    caractérisé par un système d'actionnement (37), destiné à déplacer la deuxième partie de lingotière (6) dans la direction axiale (R1, R2), la deuxième partie de lingotière (6) étant déplaçable au-delà de la position de coulée, en direction de la première partie de lingotière (4), pour soumettre le composant (8) qui doit être moulé à une pression, notamment à une pression supérieure à un bar.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé par une bague d'extrémité de lingotière (20) pourvue d'une surface de façonnage (22) qui se rétrécit dans la direction du premier segment d'extrémité (12), la bague d'extrémité de lingotière (20) étant fixée sur le corps de base (3).
  4. Dispositif selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que les parties latérales de lingotière (5) comportent des surfaces de contact (19) extérieures, qui coopèrent avec la surface intérieure (16) qui se rétrécit du corps de base (3), de telle sorte que lors d'un déplacement d'entrée (R1) axial dans le corps de base (3), les parties latérales de lingotière (5) soient déplacées l'une vers l'autre vers l'intérieur en direction radiale.
  5. Dispositif selon l'une quelconque des revendications 3 ou 4,
    caractérisé en ce que la bague d'extrémité de lingotière (20) est fixement reliée, notamment conçue en monobloc, avec le corps de base (3) ou avec la première partie de lingotière (4).
  6. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que la surface de façonnage (18) interne de la bague de lingotière (17) formée par les parties latérales de lingotière (5) et un segment partiel de la surface de façonnage (22) qui se rétrécit de la bague d'extrémité de lingotière (20) se raccordent l'une sur l'autre en direction axiale et forment conjointement une paroi latérale de la cavité de moulage (7) pour le composant (8) à couler.
  7. Dispositif selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que, dans l'état inséré des parties latérales de lingotière (5), il se forme entre l'arête inférieure (21) de bague des parties latérales de lingotière (5) et la surface de façonnage (23) de la première partie de lingotière (4) une fente qui fait partie de la cavité de moulage (7) à déverser.
  8. Dispositif selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que les parties latérales de lingotière (5) sont fixées chacune sur un élément de support (26), les éléments de supports (26) étant conjointement déplaçables en direction axiale, pour l'insertion des parties latérales de lingotière (5) dans le corps de base (3).
  9. Dispositif selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce qu'il est prévu au moins une unité d'application de pression (25), destinées à soumettre à une pression en direction axiale les parties latérales de lingotière (5) lorsqu'elles sont insérées.
  10. Dispositif selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que sont prévus au moins deux, notamment trois ou quatre parties latérales de lingotière (5) et éléments de support (26), les éléments de support (26) étant maintenus en étant translatables en direction radiale par rapport à une plaque de maintien (27).
  11. Dispositif selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce qu'il est prévu au moins un agencement de rampes (32) qui est configuré pour transformer un movement axial dans la direction d'ouverture (R2) en un movement radial d'éloignement des éléments de support (26) les uns des autres.
  12. Dispositif selon la revendication 11,
    caractérisé en ce qu'il est prévu au moins un corps d'actionnement (33) réglable en direction axiale, l'agencement de rampes (32) comportant au moins une rampe d'actionnement (34) qui est associée au corps d'actionnement (33) et au moins une rampe de réglage (35) correspondante, qui est associée à un élément de support (26), et par un déplacement axial du corps d'actionnement (33) dans la direction d'ouverture (R2), l'au moins une rampe de réglage (35) glissant le long de la rampe d'actionnement (34) correspondante, de sorte que l'élément de support (26) associé soit déplacé vers l'extérieur en direction radiale,
    et que pour chaque élément de support (26) étant prévu un agencement de rampes (32), le corps d'actionnement (33) réglable en direction axiale comportant toutes les rampes d'actionnement (34), de sorte que lors d'un déplacement axial du corps d'actionnement (33) tous les éléments de support (26) soit déplacés conjointement.
  13. Dispositif selon l'une quelconque des revendications 1 à 12,
    caractérisé en ce que la cavité de moulage (7) cernée par la première partie de lingotière (4), les parties latérales de lingotière (5) et la deuxième partie de lingotière (6) présente un volume d'au moins 0,5 l, notamment d'au moins 3,0 l.
  14. Procédé, destiné à fabriquer un composant métallique à l'aide d'un dispositif de moulage selon l'une quelconque des revendications 1 à 13,
    caractérisé par un déplacement d'entrée axial des parties latérales de lingotière (5) en direction du corps de base (3), les surfaces extérieures (19) des parties latérales de lingotière (5) étant guidées le long de la surface intérieure (16) qui se rétrécit du corps de base (3), de sorte que les parties latérales de lingotière (5) soient déplacées les unes vers les autres, en direction radiale vers l'intérieur jusqu'à ce que les parties latérales de lingotière (5) soient appuyées les unes sur les autres en direction périphérique et forment la bague de lingotière (17) et que l'arête inférieure de bague (21) de la bague de lingotière (17) soit adjacente en assurant l'étanchéité à la surface de façonnage (22) qui se rétrécit de la bague d'extrémité de lingotière (20).
  15. Procédé selon la revendication 14, caractérisé par les étapes consistant à :
    dans le dispositif de coulée (2), couler sous pression une masse fondue (9) composée d'un alliage métallique, la masse fondue étant introduite sous une pression de coulée par le dessous à travers une ouverture (15) dans la première partie de lingotière (4) dans la cavité de moulage (7), sur les parties latérales de lingotière (5) et sur la deuxième partie de lingotière (6) étant exercée une pression de maintien qui est supérieure à la pression de coulée;
    détecter un signal de pression représentant la pression interne dans la cavité de moulage (7) ;
    réduire la pression de coulée si une montée en pression soudaine est détectée ;
    après écoulement d'un temps prédéfini de pression de moulage réduite, pressuriser le composant (8) se solidifiant à partir de la masse fondue en déplaçant la deuxième partie de lingotière (6) par rapport à la première partie de lingotière (4), le composant (8) étant soumis à une pression de compression qui est supérieure à la pression de coulée.
EP16202301.4A 2016-12-05 2016-12-05 Dispositif de moulage et procédé de moulage Active EP3330020B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
PL16202301T PL3330020T3 (pl) 2016-12-05 2016-12-05 Urządzenie odlewnicze i sposób odlewania
EP16202301.4A EP3330020B1 (fr) 2016-12-05 2016-12-05 Dispositif de moulage et procédé de moulage
CA2986576A CA2986576A1 (fr) 2016-12-05 2017-11-24 Dispositif de coulage et methode de coulage
BR102017025522-0A BR102017025522A2 (pt) 2016-12-05 2017-11-28 Dispositivo de fundição e método de fundição
CN201711245628.8A CN108145128B (zh) 2016-12-05 2017-11-30 浇铸装置及浇铸方法
TW106142196A TWI801360B (zh) 2016-12-05 2017-12-01 澆鑄裝置及澆鑄方法
MX2017015567A MX2017015567A (es) 2016-12-05 2017-12-01 Dispositivo de fundicion y metodo de fundicion.
JP2017232504A JP6976153B2 (ja) 2016-12-05 2017-12-04 鋳造装置および鋳造方法
US15/830,615 US10195660B2 (en) 2016-12-05 2017-12-04 Casting device and casting method
KR1020170165629A KR102437454B1 (ko) 2016-12-05 2017-12-05 주조 장치 및 주조 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16202301.4A EP3330020B1 (fr) 2016-12-05 2016-12-05 Dispositif de moulage et procédé de moulage

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EP3330020A1 EP3330020A1 (fr) 2018-06-06
EP3330020B1 true EP3330020B1 (fr) 2021-10-06

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EP (1) EP3330020B1 (fr)
JP (1) JP6976153B2 (fr)
KR (1) KR102437454B1 (fr)
CN (1) CN108145128B (fr)
BR (1) BR102017025522A2 (fr)
CA (1) CA2986576A1 (fr)
MX (1) MX2017015567A (fr)
PL (1) PL3330020T3 (fr)
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Publication number Publication date
JP2018089697A (ja) 2018-06-14
PL3330020T3 (pl) 2022-02-07
MX2017015567A (es) 2018-11-09
US10195660B2 (en) 2019-02-05
BR102017025522A2 (pt) 2018-06-19
CA2986576A1 (fr) 2018-06-05
KR102437454B1 (ko) 2022-08-26
KR20180064310A (ko) 2018-06-14
US20180154432A1 (en) 2018-06-07
JP6976153B2 (ja) 2021-12-08
CN108145128B (zh) 2021-06-22
CN108145128A (zh) 2018-06-12
EP3330020A1 (fr) 2018-06-06
TWI801360B (zh) 2023-05-11
TW201827141A (zh) 2018-08-01

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