EP2741875B1 - Machine et procédé de coulée sous pression - Google Patents

Machine et procédé de coulée sous pression Download PDF

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Publication number
EP2741875B1
EP2741875B1 EP12746028.5A EP12746028A EP2741875B1 EP 2741875 B1 EP2741875 B1 EP 2741875B1 EP 12746028 A EP12746028 A EP 12746028A EP 2741875 B1 EP2741875 B1 EP 2741875B1
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EP
European Patent Office
Prior art keywords
die casting
casting mould
die
mould part
casting machine
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EP12746028.5A
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German (de)
English (en)
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EP2741875A1 (fr
Inventor
Heinrich G. Baumgartner
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    • 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
    • B22C9/062—Mechanisms for locking or opening moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/002—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure using movable moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B22D17/263—Mechanisms or devices for locking or opening dies mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B22D17/266—Mechanisms or devices for locking or opening dies hydraulically

Definitions

  • the present invention relates to a die casting machine with a die, which is intended for die casting possibly complicated castings from liquid molten metal.
  • the castings have mechanical properties that appear to be in need of improvement.
  • the mold parts of the die are traversed along guide columns forming part of the die casting machine, with the guide columns and hydraulic cylinders sized to hold the mold parts together even under high operating pressures of the die. Since the known die casting machines should also be usable in conjunction with larger die casting molds and since the guide columns and hydraulic cylinders are still to withstand the stresses that occur during the process and holding together of the mold parts, the known die casting machines are correspondingly bulky in design and production , elaborate and expensive.
  • Another die casting machine with one, also from several, during the casting process by appropriate Zuhalte mechanism in position to each other parts to be held existing mold is also from the WO 03/020459 A2 known. It is therefore an object to provide a die casting machine and a die casting method of the type mentioned above, with which larger castings can preferably be produced in an improved quality, the die casting machine according to the invention should still be much smaller and cheaper to produce.
  • the die casting machine has a die which has at least one fixed first casting part, at least one second casting part movable along guide columns and at least two casting side parts which are movable relative to each other transversely to the travel path of the at least one second casting part.
  • there are locking pins on at least two mold side parts which, in the closed position, engage behind the fixed first mold part and the movable second mold part such that the travel of the second mold part is limited in the direction away from the at least one first mold part.
  • the mold parts and the mold side parts of the die are thus mechanically interconnected so that the die is capable of withstanding high pressures in its closed or locked state.
  • the guide columns and the associated units are required only for moving the at least one second mold part relative to the at least first mold part.
  • the at least two mold-side parts projecting locking pin, the at least one fixed first mold part and the at least one second movable Behind the mold part. Since the guide columns and required for the process associated aggregates no longer need to be sized so as to hold the die together even under high operating pressures, the die casting machine according to the invention can be even smaller, more compact and cost-effective dimensioned, even if they are also for the production of larger castings should be usable. With the die casting machine according to the invention, therefore, considerable energy savings can also be achieved.
  • the at least one movable second mold part is movable at least with a portion in the space bounded by the mold side panels gap.
  • At least one locking pin is movable in the longitudinal direction of the pin and / or that the at least one locking pin should be movable against a restoring force.
  • the restoring force is designed as a return spring and in particular as a compression spring. It is also possible that at least one hydraulic, pneumatic or electromechanical Force transmitter serves as a restoring force.
  • the locking pins mechanically connect the mold parts and the mold side parts and can distribute the forces acting on these components of the die well
  • the locking pins are integrated into the at least two mold side parts and / or if the locking pin in the closed position an associated abutment engage behind the at least one mold part.
  • a structurally particularly simple embodiment according to the invention provides that the at least one locking pin associated abutment is formed as a protruding on a mold part flange.
  • the thermally induced dimensional changes of the die can be compensated particularly well when the locking pins taper towards their free pin ends such that their adjacent abutment facing side surface forms a ramp, and that provided at least on a mold part counter bearing preferably a complementary casserole counter-slope having.
  • a second mold part has two mold sections, which can be brought apart at a distance. While the upper mold section is connected to the mold side parts via the locking pins engaging its counter bearing, the lower mold section can be spaced such that the volume available as mold cavity is reduced and the pressure on the molten metal in the mold cavity is substantially increased ,
  • the volume reduction of the metal occurring during the metal age is compensated by the permanent pressure and can not lead to porosities.
  • the mold sections can be brought by means of at least one hydraulic, pneumatic or electro-mechanical force transmitter or any other suitable means at a distance.
  • a highly loadable construction according to the invention provides that the mold sections of the at least one second mold part are displaceably guided into each other and preferably spaced apart by pressurization of at least one separating surface located between them.
  • the at least one mold side part by means of a side member drive is movable transversely to the travel of the second mold part and when the return movement of the side part Drive the at least one mold side part is mechanically blocked.
  • each side member drive is associated with at least one locking bolt which is movable between an open position and a locking position, in which locking position of the locking bolt, a stopper surface connected to a mold side part applied in such a way that a Resetting movement of the side member drive is blocked.
  • this locking bolt With the help of this locking bolt, the mechanical locking of the die used in the invention in its closed or operating position is accomplished and ensured in this area.
  • a particularly simple yet resilient embodiment according to the invention provides that the / the side member drive (s) is / are designed as a hydraulic cylinder.
  • the mold parts and the mold side parts define at least one mold cavity, in which mold cavity at least one air suction opening and at least one preferably central inlet opening for the molten metal empties.
  • At least one locking slide is displaceably guided in a closed position at least one, preferably central inlet opening tightly closes.
  • the molten metal is particularly easy to hold in front of at least one inlet opening, without unfavorable influences of the ambient air are to be feared on the molten metal, if for subsequent casting operations required molten metal supply is preferably immediately below the die or is arranged.
  • the die casting machine has at least one molten metal pump, with which the molten metal from a molten metal reservoir via the at least one inlet opening in the at least one mold cavity of the die is conveyed.
  • the compact design of the die casting machine according to the invention is favored when the guide columns protrude beyond the stationary first mold part or a machine plate of the die casting machine carrying the first mold.
  • a die casting machine in two versions 1, 10 is shown.
  • the die casting machine 1, 10 is intended for the production of metal castings 2.
  • the die casting machine 1, 10 has a die casting mold 3, which encloses at least one molding cavity 4, which predetermines the outline of the casting 2.
  • the die casting mold 3 of the die casting machine 1, 10 has at least one fixed first casting part 5, at least one second casting part 7 movable along guide columns 6 and at least two casting mold side parts 8, 9 movable transversely to the travel path of the second casting part 7.
  • the fixed first mold part 5 is fixedly mounted on a machine plate 11 of the die casting machine 1, 10.
  • the movable second mold part 7 is held on at least one hydraulic cylinder 12, which serves as a travel drive.
  • the here vertically oriented hydraulic cylinder 12 is held with its second mold part 7 facing away from the portion at a distance above the machine plate 11 at the free end portions of the guide columns 6.
  • Fig. 2 and 4 It can be seen that on at least two mold side parts 8, 9 projecting locking pins 14 which engage behind in the closed position at least the movable second mold part 7 such that the travel of the second mold part 7 is limited in the direction away from the first mold part 5 direction.
  • the embodiments 1, 10 of the die casting machine shown here have locking pins 14 on all their casting side parts 8, 9, which engage behind both the first and the second casting mold parts 5, 7.
  • the mold parts 5, 7 and the mold side parts 8, 9 can be mechanically locked in such a way that the pressure casting mold in its closed position also uses high operating pressures of the inside of the pressure casting mold Molten metal can withstand.
  • each side member drive at least one locking bar 16 is associated, which is movable between an open position and a locking position.
  • the locking latches 16 engage a stop surface 17 connected to a casting side part 8, 9 in such a way that a return movement of the side part drive is blocked.
  • the locking bar 16 taper towards its free end of the bolt out such that their side facing the adjacent mold-side part 8, 9 side surface forms a ramp 18. Since the abutment surfaces connected to a mold side part 8, 9 have a complementary casserole counter-bevel, thermally induced dimensional deviations during the assembly of the pressure casting mold 3 can also be well compensated in this region.
  • the locking pins 14 protruding from the mold side parts 8, 9 are held movably on the mold side parts 8, 9 in the journal longitudinal direction against a restoring force.
  • This restoring force is generated here by a respective compression spring, which compression springs act on their associated locking pin 14 back.
  • the restoring force acting on the locking pins 14 is generated in each case by a hydraulic, pneumatic or electro-mechanical force transmitter.
  • the locking pins 14 engage behind a serving as an abutment flange 21.
  • At each mold part 5, 7 is a flange 21 before.
  • the locking pins 14 taper here to their spigot end in such a way that its side surface facing the adjacent flange forms a ramp 22.
  • complementary casserole slopes are provided. Due to the movable configuration of the locking pin 14 and by the run-up bevels corresponding to 22 bevels 22 which occur during assembly of the die 3 due to temperature deviations can be well balanced.
  • the mold parts 5, 7 and the mold side parts 8, 9 enclose in their closed position at least one mold cavity 4, in which the required for the production of the casting 2 molten metal can be poured.
  • the movable second mold part 7 has two mold sections 23, 24 which can be brought apart at a distance from one another. While the upper mold section 23 carries the behind engaged by locking pin 14 and serving as an abutment flange 21, the lower mold section 24 in contrast, in the space bounded by the mold side parts 8, 9 intermediate space.
  • the mold sections 23, 24 have slidably into each other guided portions, which can be brought here by pressurizing the separating surfaces lying between them at a distance.
  • the mold parts 5, 7 and the mold side parts 8, 9 define in the closed position of the die 3 at least one
  • Mold cavity 4 In order to be able to pour the molten metal into the at least one mold cavity 4 in a laminar fluid flow, at least one air suction opening 25 and at least one inlet opening 26 opens in each mold cavity. The air enclosed in the mold cavity 4 can be sucked off via the air suction opening 25 the molten metal is poured or fed via the at least one inlet opening 26.
  • at least one locking slide 27 is displaceably guided, the at least one inlet opening 26 closes tightly in the closed position, such that the molten metal reservoir 28 can still be present immediately behind the gate valve 27.
  • the molten metal reservoir 28 required for subsequent casting operations is present below the die casting mold 3.
  • the ambient air can adversely affect the quality of the molten metal supply required for subsequent casting operations.
  • at least one metal melt pump 29 is integrated into the molten metal reservoir 28, by means of which the molten metal can be conveyed via the at least one inlet opening 26 into the at least one mold cavity 4 of the pressure casting mold 3.
  • the die casting machine 1 shown here is characterized by a much more compact design. Since the hydraulic cylinder 12 is needed only for moving the second mold part 7 and the mold parts 5, 7 does not hold together, this hydraulic cylinder 12 and the second mold part 7 supporting guide columns 6 can be designed correspondingly smaller. Since thus lower forces required to operate the die casting machine shown here are, can be achieved with the die casting machine 1, a significant energy savings.
  • Fig. 7 to 9 show the die 3 of the die casting machine 10 in a detailed view in the region of the inlet opening 26, it becomes clear that the gate valve 27, after filling the at least one mold cavity 4 provided in the die 3, moves from its open position Fig. 7 in its closed position according to Fig. 8 moves, in which closed position the metal melt located in the at least one mold cavity 4 separated from the required for subsequent casting operations molten metal reservoir 28 and the inlet opening 26 is sealed.
  • the casting mold sections 23, 24 are hydraulically spaced and the metal melt in the at least one mold cavity is pressurized, so that the locking slide 27 is additionally immersed in its associated inlet opening 28 (cf. Fig. 9 ). But it is also possible to bring the mold sections 23, 24 pneumatically, electro-mechanically or in any other suitable manner at a distance.
  • the die casting mold 3 of the die casting machine 10 can also have a plurality of mold cavities 4 for simultaneously producing a plurality of castings 2. While the die casting machine 1 according to the Fig. 1 to 4 a die-casting mold 3 having only one mold cavity 4, in which mold cavity 4, for example, a light metal impeller can be produced, are in the die 3 of the die casting machine 10 according to Fig. 5 several mold cavities 4 are provided, which are used here for the simultaneous production of, for example, several pistons.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (19)

  1. Machine de coulée sous pression (1, 10) avec un moule de coulée sous pression (3), qui (3) comporte au moins une première partie de moule de coulée fixe (5), au moins une deuxième partie de moule de coulée (7) déplaçable le long de colonnes de guidage (6) ainsi qu'au moins deux parties latérales de moule de coulée (8, 9) déplaçables l'une par rapport à l'autre transversalement au chemin de déplacement de ladite au moins une deuxième partie de moule de coulée (7), dans laquelle des tourillons de fermeture (14) sont saillants sur au moins deux parties latérales de moule de coulée (8, 9) et s'accrochent à la première partie de moule de coulée fixe (5) et à la deuxième partie de moule de coulée déplaçable (7), de telle manière que le chemin de déplacement de ladite au moins une deuxième partie de moule de coulée (7) soit limité dans la direction s'éloignant de ladite au moins une première partie de moule de coulée (5).
  2. Machine de coulée sous pression selon la revendication 1, caractérisée en ce que la deuxième partie de moule de coulée déplaçable (7) est déplaçable au moins d'une région partielle dans l'espace intermédiaire délimité par les parties latérales de moule de coulée (8, 9).
  3. Machine de coulée sous pression selon la revendication 1 ou 2, caractérisée en ce qu'au moins un tourillon de fermeture (14) est mobile dans la direction longitudinale du tourillon.
  4. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 3, caractérisée en ce que ledit au moins un tourillon de fermeture (14) peut être déplacé dans la direction longitudinale du tourillon contre une force de rappel.
  5. Machine de coulée sous pression selon la revendication 4, caractérisée en ce que la force de rappel est réalisée sous la forme d'un ressort de rappel et en particulier d'un ressort de compression ou est exercée par au moins un générateur de force hydraulique, pneumatique ou électromécanique.
  6. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les tourillons de fermeture (14) sont intégrés dans lesdites au moins deux parties latérales de moule de coulée (8, 9).
  7. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les tourillons de fermeture (14) s'accrochent en position fermée à un contre-appui associé sur au moins une partie de moule de coulée (5, 7).
  8. Machine de coulée sous pression selon la revendication 7, caractérisée en ce que le contre-appui associé à au moins un tourillon de fermeture (14) est réalisé en forme de bride (21) en saillie sur une partie de moule de coulée (5, 7).
  9. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les tourillons de fermeture (14) s'amincissent en direction de leur extrémité de tourillon libre, en ce que la face latérale des tourillons de fermeture (14) tournée vers le contre-appui voisin forme une rampe d'entrée (22), et en ce que le contre-appui prévu au moins sur une pièce de moule de coulée (5, 7) présente de préférence une rampe d'entrée opposée complémentaire.
  10. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la deuxième partie de moule de coulée (7) présente deux pièces de partie de moule de coulée (23, 24), qui peuvent être amenées à distance l'une de l'autre, et en ce que la pièce de partie de moule de coulée supérieure (23) porte de préférence le contre-appui.
  11. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 10, caractérisée en ce que les pièces de partie de moule de coulée (23, 24) de la deuxième partie de moule de coulée (7) sont guidées de façon coulissante l'une dans l'autre et peuvent être amenées à distance l'une de l'autre de préférence par l'application d'une pression à au moins une face de séparation située entre elles.
  12. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 11, caractérisée en ce que ladite au moins une partie latérale de moule de coulée (8, 9) est déplaçable au moyen d'un entraînement de partie latérale transversalement au chemin de déplacement de la deuxième partie de moule de coulée (7) et en ce que le mouvement de rappel de l'entraînement de partie latérale de ladite au moins une partie latérale de moule de coulée (8, 9) peut être bloqué mécaniquement.
  13. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 12, caractérisée en ce qu'au moins un verrou d'arrêt (16) est associé à chaque entraînement de partie latérale, lequel est déplaçable entre une position ouverte et une position d'arrêt, position d'arrêt dans laquelle le verrou d'arrêt (16) agit sur une face de butée associée à une partie latérale de moule de coulée (8, 9), de telle manière qu'un mouvement de rappel de l'entraînement de partie latérale soit bloqué.
  14. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 13, caractérisée en ce que les verrous d'arrêt (16) s'amincissent en direction de leur extrémité de verrou libre, de telle manière que leur face latérale tournée vers la partie latérale de moule de coulée voisine (8, 9) forme une rampe d'entrée, et en ce que la face de butée (17) associée à la partie latérale de moule de coulée (8, 9) présente une rampe opposée complémentaire.
  15. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 14, caractérisée en ce que le/les entraînement(s) de partie latérale est/sont réalisé(s) sous forme de cylindre(s) hydraulique(s) (13).
  16. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 15, caractérisée en ce que les parties de moule de coulée (5, 7) et les parties latérales de moule de coulée (8, 9) délimitent au moins une cavité de moulage (4), cavité de moulage (4) dans laquelle débouchent au moins une ouverture d'aspiration d'air (25) et au moins une ouverture d'alimentation de préférence centrale (26) pour le métal en fusion.
  17. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 16, caractérisée en ce qu'au moins un curseur d'arrêt (27) est guidé de façon coulissante dans la deuxième partie de moule de coulée déplaçable (7), lequel ferme de façon étanche, dans une position de fermeture, ladite au moins une ouverture d'alimentation de préférence centrale (26).
  18. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 17, caractérisée en ce que la machine de coulée sous pression (1, 10) comporte au moins une pompe à métal en fusion (29), au moyen de laquelle le métal en fusion peut être transporté depuis une réserve de métal en fusion (28) via ladite au moins une ouverture d'alimentation (26) dans ladite au moins une cavité de moulage (4) du moule de coulée sous pression (3).
  19. Machine de coulée sous pression selon l'une quelconque des revendications 1 à 18, caractérisée en ce que les colonnes de guidage (6) sont saillantes au-dessus de la première partie de moule de coulée fixe (5) ou d'un plateau de machine (11) de la machine de coulée sous pression (1, 10) portant la première partie de moule de coulée (5).
EP12746028.5A 2011-08-12 2012-08-06 Machine et procédé de coulée sous pression Active EP2741875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011110176A DE102011110176B4 (de) 2011-08-12 2011-08-12 Druckgießmaschine sowie Druckgießverfahren
PCT/EP2012/003355 WO2013023754A1 (fr) 2011-08-12 2012-08-06 Machine et procédé de coulée sous pression

Publications (2)

Publication Number Publication Date
EP2741875A1 EP2741875A1 (fr) 2014-06-18
EP2741875B1 true EP2741875B1 (fr) 2017-10-11

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US (1) US20140190652A1 (fr)
EP (1) EP2741875B1 (fr)
JP (1) JP2014521519A (fr)
CN (1) CN103747895A (fr)
DE (1) DE102011110176B4 (fr)
MX (1) MX2014001437A (fr)
WO (1) WO2013023754A1 (fr)

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CN109433989B (zh) * 2018-11-01 2020-09-29 辽宁工业大学 一种采用曲肘连杆锁模结构的铸锻一体装置

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DE102011110176B4 (de) 2013-06-06
DE102011110176A1 (de) 2013-02-14
WO2013023754A1 (fr) 2013-02-21
MX2014001437A (es) 2014-07-30
JP2014521519A (ja) 2014-08-28
CN103747895A (zh) 2014-04-23
EP2741875A1 (fr) 2014-06-18
US20140190652A1 (en) 2014-07-10

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