EP0761345B1 - Machine à couler sous pression à chambre chaude - Google Patents

Machine à couler sous pression à chambre chaude Download PDF

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Publication number
EP0761345B1
EP0761345B1 EP96113228A EP96113228A EP0761345B1 EP 0761345 B1 EP0761345 B1 EP 0761345B1 EP 96113228 A EP96113228 A EP 96113228A EP 96113228 A EP96113228 A EP 96113228A EP 0761345 B1 EP0761345 B1 EP 0761345B1
Authority
EP
European Patent Office
Prior art keywords
hot
nozzle
machine according
die casting
chamber 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.)
Expired - Lifetime
Application number
EP96113228A
Other languages
German (de)
English (en)
Other versions
EP0761345A3 (fr
EP0761345A2 (fr
Inventor
Roland Fink
Ulrich Schraegle
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.)
Oskar Frech GmbH and Co KG
Original Assignee
Oskar Frech GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19543805A external-priority patent/DE19543805A1/de
Application filed by Oskar Frech GmbH and Co KG filed Critical Oskar Frech GmbH and Co KG
Publication of EP0761345A2 publication Critical patent/EP0761345A2/fr
Publication of EP0761345A3 publication Critical patent/EP0761345A3/fr
Application granted granted Critical
Publication of EP0761345B1 publication Critical patent/EP0761345B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2038—Heating, cooling or lubricating the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines

Definitions

  • the invention relates to a hot chamber die casting machine for Processing of magnesium melts, with a casting container with a riser hole with a conical mouthpiece and with a nozzle attached to the mouthpiece, as well as with a Heating device for heating the nozzle.
  • DE-A 24 25 067 proposes a casting device for casting of magnesium alloys on hot chamber die casting machines before, but uses one perfectly for this purpose casting container arranged outside the crucible with siphon hole and nozzle.
  • This casting container is with a pressurized filling chamber in the crucible over a Ascending pipe and with the crucible via an overflow pipe connected.
  • From DE-OS 21 41 551 is an air-cooled nozzle for metal casting devices known in which the nozzle has a electric resistance heater is heated. You have to get there an overheating of the nozzle between the "shots", where one in the substantial empty nozzle is present, its electrical resistance is larger than the line filled with the metal, one Air cooling is provided, which is placed around the nozzle Mantle flows in channels between turns of a helically wound rod made of round material be formed with an outer sleeve and an inner Sleeve forms the walls for the air duct. The Electrical resistance heating takes place there in that the feed pipe and the nozzle itself with an energy source be connected and so directly as electrical resistance serve.
  • EP 0 662 361 A1 is a casting process known in which you have a casting sleeve with one in your Provides internal moving pistons and outside of this sleeve provides a series of electrical control rods, which in turn are surrounded by a wall around which an induction coil is wrapped. The main thing there is to do that to keep potting material in a semi-solid state. For this purpose, very low ones are used in some cases Frequencies, e.g. between 300 and 1,000 Hz for exposure of the induction coil, but at the same time suggests a To avoid overheating of the electrical conductor elements to manufacture these as straight hollow tubes made of stainless steel, embed them in an insulator and cool them with water. The pouring device shown there is not a hot chamber die casting machine. The arrangement and the Operation of such facilities are also very expensive.
  • the configuration according to the invention also enables a relative easy manufacture of induction heating and cooling equipment.
  • an air inlet and an air outlet valve is arranged at the other end be, the latter more or less temperature controlled can open, so that also on relatively simple Controlled air cooling of the inductors can be effected can.
  • the tubes can form sleeve bodies be wound, then several each on cylindrical Parts of the device to be heated pushed on can be.
  • this idea can ever one of the sleeve bodies onto one in the area of the mouthpiece cylindrical approach of the casting container, on the area of this casting container adjacent area of the cylindrical nozzle and pushed onto the nozzle in the area of their mouthpiece his.
  • These sleeve bodies can be moved on adjust different areas.
  • this can be done on the casting container approach put on the sleeve body this approach protrude outside and at least the connection area of the nozzle surrounded outside.
  • a monitoring unit for blooming magnesium oxide be provided, which is useful as a ring with a Contact loop is formed.
  • inductors can prevent magnesium in the area of inductors be provided in a development of the invention that at least the inductor assigned to the nozzle on its to the casting container facing end with a the front end of the to Mouthpiece area extending inductor overlapping edge is provided. This measure can prevent the ingress of possibly magnesium spraying backwards during the die casting process in the area between or under the inductors be avoided.
  • the inductor assigned to the nozzle can also be invented have a conical outer contour, from the outset magnesium may splash backwards is derived to the outside.
  • a ring inductor placed around the casting container can be provided, the one to equalize the temperature and to one leads to higher procedural security.
  • Fig. 1 is part of a hot chamber die casting machine shown that is used to process magnesium.
  • the liquid magnesium is at temperatures of approx. 630-680 ° C within the container, not shown in detail (1).
  • this container (1) protrudes through a cover (2) a casting container (3) with a riser hole (4) with a cone-shaped mouthpiece (5).
  • in the Casting container (3) is also not a closer shown casting piston, which is known via the piston rod (6) Introduced into the casting cylinder (7) from above is that from the liquid container (1) with the the amount of liquid that is poured out before the piston reaches the filler opening completes with its movement and the liquid Push the metal up through the riser hole (4).
  • A is inserted into the mouthpiece (5) of the casting container (3) Nozzle (8) with its mouthpiece (9) into the sprue area the form (10) is sufficient, which is only indicated schematically is.
  • a sleeve-shaped inductive Radiator (12) pushed on Two more sleeve-shaped inductive Radiators (13 and 14) are on the middle area the nozzle (8) or on the area of the mouthpiece (9) of the nozzle (8) postponed.
  • the sleeve body (12) is placed on the shoulder (11) that it protrudes from the end of its face.
  • the sleeve body (12) also towers above a mother (15) who is to be used later Disassembly of the nozzle (8) is screwed onto this, as well as one Monitoring device located on the inside of the sleeve body (12) in the form of a contact loop Ring (16) is arranged.
  • Mudguard (17) To the mouthpiece (9) of the nozzle (8) lies in front of the front end of the sleeve body (12) Mudguard (17), the unwanted intrusion of possibly to prevent magnesium melt splashing backwards.
  • the monitoring device (16) is used in the exemplary embodiment to do so, between efflorescence in the cavity (18) the sleeve body (12) and the nozzle (8) to detect the for example due to a leak between the approach (11) and the nozzle (8) or due to leaks in the area of the neck (19) of the casting container (3) and thereby in the area inside the sleeve body (12) Magnesium could occur.
  • Fig. 2 shows that one for better sealing between approach (11) of the casting container (3) and nozzle (8) an O-ring (20) has applied the cone area of the nozzle (8).
  • a circumferential sealing cord (21) provided between two flange rings (22 and 23) is clamped and thus the required seal between the cover (2) for the molten metal and the Neck (19) of the casting container (3) causes.
  • the flange ring (22) is firmly welded to the cover (2).
  • the Flange ring (23) consists of asbestos-free ceramic material. This ensures that the inductive field is not disturbed becomes. Otherwise the heating effect can be optimally used become.
  • Fig. 4 shows that the copper tubes (24) in simpler Allow to wrap to the sleeve bodies (12, 13 and 14).
  • the inductors so formed are air-cooled outside, with thermal insulation provided before they are in their corresponding mounting positions be pushed.
  • the front end of the sleeve body facing the mouthpiece (9) (14) is also provided with a mudguard (28).
  • the Inductors are generated by the generator (25) with a kind of medium frequency supplied, i.e. at a frequency that is in the The order of magnitude is between 8 kHz and 15 kHz.
  • the inductor with such a frequency is air cooling possible, in particular due to the special nature of the Training of the inductors is made possible.
  • the order the monitoring device (16) in turn ensures that the cavity itself, which is not transparent in operation (18) can be monitored safely.
  • the sleeve body (14 and 13) after switching off the machine forward from the nozzle (8) pulled down. This can be done easily by hand.
  • the sleeve body (12) is then removed from the attachment (11). pulled down, which can also be done by hand, so that then disassemble the nozzle (8) in the known manner the push-off nut (15) can be actuated.
  • the front sleeve body (14) to pull over the tip of the nozzle when it is worn out, see above that then at the start immediately from the first shot again correct temperature is reached at the tip of the nozzle.
  • the rest of the has the same structure as that explained in FIGS. 3 and 4 Inductors, has a conical outer contour (35), the serves to possibly die-cast between the mouthpiece (9) and magnesium spraying the workpiece outwards derived and from the area of the adjacent inductor (13 ') and on the mouthpiece (11) of the casting container (3) keep the attached inductor (12 ') away.
  • the inductor (13 ') in turn is on its the casting container (3) facing end with a flange (36) which for cylindrical outer circumference and to the front end of the nozzle (8) provided with an oblique annular surface (34) is also used as a repellent surface for splashing magnesium serves.
  • This flange (36) is on the inductor (12 ') facing Side with a peripheral edge (32) a recess (33) of the inductor (12 ') overlaps so that A seal between the inductors at this point too is created.
  • the structure of the hot chamber die casting machine corresponds 5 the structure of that described in FIG. 2 Die casting machine.
  • ring inductor (40) above the seal (21) around the neck of the casting container (3) laid around.
  • This ring inductor (40) can also be constructed like the inductors already described. He is operated at medium frequency.
  • This ring inductor (40) is used to ensure that it is as uniform as possible Temperature distribution on the neck of the casting container (3) too to reach. This ensures the safety of the casting process become.

Claims (20)

  1. Machine à couler sous pression à chambre chaude pour le traitement de fontes de magnésium, comprenant un récipient de coulée (3) muni d'un alésage vertical (4) possédant une embouchure (5) située dans un épaulement (11) du récipient de coulée et une buse (8) fixée sur l'embouchure, ainsi qu'un dispositif de chauffage pour chauffer la buse (8), caractérisée en ce que l'épaulement (11) du récipient de coulée et la buse (8) sont équipés d'un dispositif de chauffage (12, 13, 14) dont les inducteurs (12, 13, 14) sont constitués de tubes (24) isolés extérieurement qui sont alimentés avec une moyenne fréquence ou avec une fréquence située à la limite inférieure de la haute fréquence et traversés par de l'air.
  2. Machine à couler sous pression à chambre chaude selon la revendication 1, caractérisée en ce que la fréquence de service des dispositifs de chauffage se situe dans un ordre de grandeur entre 10kHz et 15kHz.
  3. Machine à couler sous pression à chambre chaude selon la revendication 2, caractérisée en ce que les tubes (24) présentent, à une extrémité, une entrée d'air (26) et, à l'autre extrémité, une soupape d'échappement (27) qui s'ouvre plus ou moins en fonction de la température.
  4. Machine à couler sous pression à chambre chaude selon la revendication 1, caractérisée en ce que les tubes (24) sont enroulés pour former des manchons (12, 13, 14).
  5. Machine à couler sous pression à chambre chaude selon la revendication 4, caractérisée en ce que l'un des manchons (12, 13, 14) est enfoncé sur un épaulement (11) du récipient de coulée, ledit épaulement étant cylindrique et situé dans la zone de l'embouchure, un autre manchon est enfoncé sur la zone de la buse (8) contiguë à cette zone du récipient de coulée et un autre manchon est enfoncé sur la buse dans la zone de l'embouchure (9).
  6. Machine à couler sous pression à chambre chaude selon la revendication 5, caractérisée en ce que le manchon (12) enfoncé sur l'épaulement (11) du récipient de coulée dépasse l'épaulement vers l'extérieur et entoure extérieurement au moins la zone de raccordement de la buse (8).
  7. Machine à couler sous pression à chambre chaude selon la revendication 5, caractérisée en ce que les manchons (12, 13, 14) sont adaptables en différentes zones en les déplaçant manuellement en particulier.
  8. Machine à couler sous pression à chambre chaude selon la revendication 5, caractérisée en ce que des tôles de protection (17 et 28) sont prévues devant la surface extérieure, opposée au récipient de coulée (3), du manchon (12) enfoncé sur l'épaulement (11) du récipient de coulée, et à l'extrémité extérieure du manchon (14) enfoncé sur l'embouchure de la buse (8).
  9. Machine à couler sous pression à chambre chaude selon la revendication 6, caractérisée en ce qu'une unité de surveillance (16) pour l'oxyde de magnésium efflorescent est prévue à l'intérieur du manchon (12) dépassant de l'épaulement (11) et entre celui-ci et la buse (8).
  10. Machine à couler sous pression à chambre chaude selon la revendication 9, caractérisée en ce que l'unité de surveillance (16) est réalisée sous la forme d'un anneau (16) comportant une boucle de contact et fixé au manchon (12).
  11. Machine à couler sous pression à chambre chaude selon la revendication 5, caractérisée en ce que la zone de raccordement conique de la buse (8) est dotée d'un joint torique (20) assurant l'étanchéité dans la zone de l'embouchure conique (5) du récipient de coulée (3).
  12. Machine à couler sous pression à chambre chaude selon la revendication 5, caractérisée en ce qu'un cordon d'étanchéité (21) enserré entre deux brides (22 et 23) est prévu pour assurer l'étanchéité entre le couvercle (2) du récipient de coulée et le col (19) du récipient de coulée (3), faisant saillie dudit couvercle.
  13. Machine à couler sous pression à chambre chaude selon la revendication 12, caractérisée en ce qu'une bride (22) est fixée par soudage au couvercle (2).
  14. Machine à couler sous pression à chambre chaude selon la revendication 12 ou 13, caractérisée en ce que la deuxième bride (23) est constituée d'un matériau céramique sans amiante.
  15. Machine à couler sous pression à chambre chaude selon la revendication 1, caractérisée en ce qu'au moins l'inducteur (14') correspondant à la buse (8) est doté, à son extrémité tournée vers le récipient de coulée (3), d'un bord (30) recouvrant l'extrémité avant de l'inducteur (13') allant vers l'épaulement (11).
  16. Machine à couler sous pression à chambre chaude selon la revendication 15, caractérisée en ce que l'inducteur (14') correspondant à la buse (8) présente un profil extérieur conique.
  17. Machine à couler sous pression à chambre chaude selon la revendication 15, caractérisée en ce que l'inducteur (13') allant vers l'épaulement (11) du récipient de coulée est doté d'un bord (32) recouvrant l'extrémité avant de l'inducteur (12') situé sur ledit épaulement.
  18. Machine à couler sous pression à chambre chaude selon la revendication 17, caractérisé en ce que le bord (32) est écarté d'une bride (36) dont la surface annulaire (24) est inclinée en direction de l'extrémité avant de la buse (8) et de la partie cylindrique de l'inducteur (12').
  19. Machine à couler sous pression à chambre chaude selon la revendication 1, caractérisée en ce qu'un inducteur annulaire (40) supplémentaire est placé dans le plan du couvercle (2) du récipient (1) pour la coulée autour du récipient de coulée (3).
  20. Machine à couler sous pression à chambre chaude selon la revendication 19, caractérisée en ce que l'inducteur annulaire (40) est constitué de demi-coques qui sont enfichables sur le col du récipient de coulée(3).
EP96113228A 1995-08-24 1996-08-17 Machine à couler sous pression à chambre chaude Expired - Lifetime EP0761345B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19531161 1995-08-24
DE19531161A DE19531161C2 (de) 1995-08-24 1995-08-24 Warmkammer-Druckgießmaschine
DE19543805A DE19543805A1 (de) 1995-08-24 1995-11-24 Warmkammer-Druckgießmaschine
DE19543805 1995-11-24

Publications (3)

Publication Number Publication Date
EP0761345A2 EP0761345A2 (fr) 1997-03-12
EP0761345A3 EP0761345A3 (fr) 1998-09-02
EP0761345B1 true EP0761345B1 (fr) 2000-03-15

Family

ID=26017964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113228A Expired - Lifetime EP0761345B1 (fr) 1995-08-24 1996-08-17 Machine à couler sous pression à chambre chaude

Country Status (6)

Country Link
US (1) US5960854A (fr)
EP (1) EP0761345B1 (fr)
JP (1) JPH09122868A (fr)
AT (1) ATE190532T1 (fr)
DE (1) DE19531161C2 (fr)
ES (1) ES2144177T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1825939A2 (fr) 2006-02-24 2007-08-29 Oskar Frech GmbH + Co. KG Dispositif de dosage pouvant être chauffé pour une machine à couler sous pression à chambre chaude

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WO2000047352A1 (fr) * 1999-02-10 2000-08-17 Ju-Oh Inc. Moule metallique de machine de moulage a injection de type a canaux chauffants, et procede de fabrication du moule metallique
FR2789612B1 (fr) * 1999-02-12 2001-04-27 Gilles Curti Procede et dispositif de moulage de matiere metallique par injection et procede pour modifier un moule d'injection
EP1044743B1 (fr) * 1999-04-13 2003-08-06 Oskar Frech Gmbh & Co. Machine à couler sous pression à chambre chaude
AU723887B3 (en) * 2000-07-07 2000-09-07 Liken Lin Melting furnace of a die-casting machine
US6463694B1 (en) 2000-10-06 2002-10-15 Edward Manciet Closed pesticide delivery and recovery system
DE50012864D1 (de) * 2000-10-31 2006-07-06 Frech Oskar Gmbh & Co Einrichtung zur Herstellung von Metall-Druckgussteilen, insbesondere aus NE-Metallen
ES2258137T3 (es) * 2002-04-19 2006-08-16 Salvatore Bonvegna Boquilla para dispositivo de moldeado a presion.
CN101199990B (zh) * 2003-02-13 2010-10-06 泰克麦尔有限公司 模铸机
ATE485178T1 (de) 2004-03-26 2010-11-15 Continental Reifen Deutschland Fahrzeugluftreifen
US7341094B2 (en) * 2005-05-02 2008-03-11 Husky Injection Molding Systems Ltd. Metallic alloy slurry dispenser
CA2628504C (fr) 2007-04-06 2015-05-26 Ashley Stone Dispositif de coulage
KR101030223B1 (ko) * 2009-01-23 2011-04-22 김경탁 다이캐스팅 전극 터미널 성형 장치
DE102011050149A1 (de) * 2010-11-17 2012-05-24 Ferrofacta Gmbh Druckgussdüse und Druckgussverfahren
DE102012102549A1 (de) * 2011-11-15 2013-05-16 Ferrofacta Gmbh Druckgussdüse und Verfahren zum Betrieb der Druckgussdüse
ITMI20120950A1 (it) * 2012-06-01 2013-12-02 Flavio Mancini Metodo e impianto per ottenere getti pressofusi in leghe leggere con anime non metalliche
US9925583B2 (en) * 2013-07-11 2018-03-27 Crucible Intellectual Property, Llc Manifold collar for distributing fluid through a cold crucible
FR3044943B1 (fr) * 2015-12-11 2020-12-04 Adm28 S Ar L Embout d'injection pour machine de coulee, machine et procede de coulee faisant usage d'un tel embout

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1825939A2 (fr) 2006-02-24 2007-08-29 Oskar Frech GmbH + Co. KG Dispositif de dosage pouvant être chauffé pour une machine à couler sous pression à chambre chaude
US7810550B2 (en) 2006-02-24 2010-10-12 Oskar Frech Gmbh & Co. Kg Heatable metering device for a hot chamber die-casting machine

Also Published As

Publication number Publication date
US5960854A (en) 1999-10-05
DE19531161C2 (de) 1999-05-20
ES2144177T3 (es) 2000-06-01
JPH09122868A (ja) 1997-05-13
DE19531161A1 (de) 1997-02-27
ATE190532T1 (de) 2000-04-15
EP0761345A3 (fr) 1998-09-02
EP0761345A2 (fr) 1997-03-12

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