EP1491276A1 - Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine - Google Patents

Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine Download PDF

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Publication number
EP1491276A1
EP1491276A1 EP03014120A EP03014120A EP1491276A1 EP 1491276 A1 EP1491276 A1 EP 1491276A1 EP 03014120 A EP03014120 A EP 03014120A EP 03014120 A EP03014120 A EP 03014120A EP 1491276 A1 EP1491276 A1 EP 1491276A1
Authority
EP
European Patent Office
Prior art keywords
casting
chamber
casting chamber
die casting
light metal
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.)
Granted
Application number
EP03014120A
Other languages
German (de)
English (en)
Other versions
EP1491276B1 (fr
Inventor
Reinhard Winkler
Jürgen Wüst
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.)
Magna BDW Technologies GmbH
Original Assignee
Magna BDW Technologies 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 Magna BDW Technologies GmbH filed Critical Magna BDW Technologies GmbH
Priority to EP03014120A priority Critical patent/EP1491276B1/fr
Priority to DE50301106T priority patent/DE50301106D1/de
Priority to AT03014120T priority patent/ATE303216T1/de
Publication of EP1491276A1 publication Critical patent/EP1491276A1/fr
Application granted granted Critical
Publication of EP1491276B1 publication Critical patent/EP1491276B1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/10—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with horizontal press motion
    • 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

Definitions

  • the present invention relates to a casting chamber of a die casting machine with a casting piston movable within the casting chamber and at least one outlet for the discharge of the liquid metallic die casting material into at least one casting barrel, the casting barrel being connected to a mold cavity. Furthermore, the invention relates to a method for filling the mold of a die casting machine.
  • Casting chambers of this type for die casting machines and methods for filling molds in a die casting machine are known.
  • the liquid metal is usually passed through a suitable channel, namely the casting run in the so-called casting anvil, which dips into a mold-side end of the casting chamber, into a so-called gate and then into the mold cavity.
  • the connecting channel between the casting chamber and the casting run is usually arranged such that the liquid metal only reaches the casting run when the casting chamber is very full.
  • process-related when the casting chamber is filled with liquid metal due to its affinity with oxygen, oxides are formed which collect on the metal surface or bath surface.
  • the connecting channel to the casting run in the casting anvil Due to the relatively high arrangement of the connecting channel to the casting run in the casting anvil, it reaches the bath surface the casting chamber contains a high proportion of oxide in the melt during mold filling directly into the mold cavity of the casting to be cast. In the resulting cast part, the oxides generally appear as sheet-like defects in the structure and adversely affect the mechanical properties of the cast parts.
  • a generic casting chamber according to the features of main claim 1 and a method according to the features of independent claim 5 are used to solve these tasks.
  • a casting chamber of a die casting machine with a casting piston movably arranged within the casting chamber and at least one outlet for draining the liquid metallic die casting material into at least one casting barrel, the casting barrel being connected to a mold cavity, advantageously has a drain which is in the region of the bottom on the mold side the casting chamber is arranged.
  • the metal feed is thus introduced into the casting run to cut the cast part at the lower mold-side outlet of the melt from the casting chamber into the mold. It is thereby advantageously achieved that during the forward movement of the casting piston, a separation of the lighter, and therefore upper, metal layer, which contains oxide, does not come into the region of the bottom of the casting chamber. Only low-oxide or oxide-free casting material flows from the lower area of the casting chamber into the casting run and thus into the mold cavity. Consequently the entry of oxide-containing parts of the casting material into the mold cavity is reliably prevented.
  • At least one overflow channel which opens into at least one overflow container, is formed in the upper region of the casting chamber opposite the base region. Due to the additional arrangement of an upper mold-side outlet of the melt from the casting chamber, the oxide-containing components are separated via the overflow channel into the overflow container and the low-oxide or oxide-free casting material flows from the lower region of the casting chamber into the mold cavity. By skimming off the oxide-containing parts of the casting material and transferring them to the overflow container, the entry of oxide-containing parts of the casting material into the mold cavity is in turn reliably prevented.
  • the casting material is a melt of a light metal or a light metal alloy, the light metal being in particular aluminum or magnesium.
  • a method for mold filling a die casting machine comprises the following steps: (a) filling a liquid metallic die casting material into a casting chamber and (b) moving a casting piston arranged within the casting chamber in the direction of a mold cavity and transferring the casting material via at least one outlet into at least one casting run, wherein the pouring run is connected to the mold cavity and the outlet on the mold side is arranged in the region of the bottom of the casting chamber.
  • the casting chamber is located in the upper region opposite the base region at least one overflow channel on the mold side, which opens into at least one overflow container.
  • the formation of an overflow channel and an overflow container reliably separates the oxide-coated upper casting material layer into the overflow container and transfers the low-oxide or oxide-free casting material from the lower region of the casting chamber into the mold cavity. Penetration of the oxide-containing casting material into the mold cavity is thus reliably prevented.
  • the casting material is a melt of a light metal or a light metal alloy, the light metal being in particular aluminum or magnesium.
  • FIG. 1 shows a casting chamber 12 of a die casting machine 10 in a sectional illustration. It can be seen that the casting chamber 12 has two outlets 16, 18 in the region of a base 24 for the discharge of the liquid metallic die casting material into the casting barrel 20.
  • the casting runs 20 are connected to a mold cavity 22 via channels 36.
  • an overflow channel 26 is formed on the mold side in the upper area 34 opposite the bottom area 24 and opens into an overflow tank 28.
  • Figure 2 shows a side sectional view of the casting chamber 14 of the die casting machine 10. It can be seen that a movable casting piston 14 is arranged within the casting chamber 12, which during the forward movement in the direction of the casting barrel 20 or the mold cavity 22 the casting material 30 via the outlet 16 in the Casting barrel 20 and thus transferred into the mold cavity 22.
  • the outlet 16 (like the outlet 18, not shown) is arranged on the mold side in the region of the bottom 24 of the casting chamber 12.
  • the overflow channel 26 is arranged on the mold side and is connected to the overflow tank 28. It can be seen that on the low-oxide or oxide-free layer of the casting material 30 there is a lighter, that is to say less dense layer 32 consisting of oxide-containing parts of the casting material.
  • the arrangement of the drains 16, 18 in the lower region of the casting chamber 14 and of the overflow channel 26 in the upper region of the casting chamber 14 results in a reliable separation of the layers 30, 32. Only low-oxide or oxide-free casting material is placed in the casting run 20 and thus in the mold cavity 22 30 transferred.
  • the casting material 30 consists of a melt of a light metal or light metal alloy, the light metal being in particular aluminum or magnesium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Casting Devices For Molds (AREA)
EP03014120A 2003-06-23 2003-06-23 Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine Expired - Lifetime EP1491276B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03014120A EP1491276B1 (fr) 2003-06-23 2003-06-23 Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine
DE50301106T DE50301106D1 (de) 2003-06-23 2003-06-23 Giesskammer einer Druckgiessmaschine und Verfahren zur Formfüllung einer Druckgiessmaschine
AT03014120T ATE303216T1 (de) 2003-06-23 2003-06-23 Giesskammer einer druckgiessmaschine und verfahren zur formfüllung einer druckgiessmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03014120A EP1491276B1 (fr) 2003-06-23 2003-06-23 Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine

Publications (2)

Publication Number Publication Date
EP1491276A1 true EP1491276A1 (fr) 2004-12-29
EP1491276B1 EP1491276B1 (fr) 2005-08-31

Family

ID=33395850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014120A Expired - Lifetime EP1491276B1 (fr) 2003-06-23 2003-06-23 Chambre d'une machine d'injection sous pression et méthode de remplissage de la cavité de cette machine

Country Status (3)

Country Link
EP (1) EP1491276B1 (fr)
AT (1) ATE303216T1 (fr)
DE (1) DE50301106D1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244816A (en) * 1939-09-27 1941-06-10 Aluminum Co Of America Die casting apparatus
DE19606160A1 (de) * 1996-02-20 1997-08-21 Bayerische Motoren Werke Ag Kaltkammer-Druckgießmaschine mit einer horizontalen oder schrägen Füllkammer
EP0940206A1 (fr) * 1998-03-04 1999-09-08 Alusuisse Technology & Management AG Décrotteur d'oxyde
DE10122028A1 (de) * 2001-05-07 2002-11-14 Buehler Druckguss Ag Uzwil Verfahren zum Druckgiessen und Druckgiessmaschine
DE10144945A1 (de) * 2001-09-12 2003-04-10 Alcan Bdw Gmbh & Co Kg Verfahren zum Steuern eines Vakuumventils einer Vakuumdruckgießvorrichtung sowie Vakuumdruckgießvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244816A (en) * 1939-09-27 1941-06-10 Aluminum Co Of America Die casting apparatus
DE19606160A1 (de) * 1996-02-20 1997-08-21 Bayerische Motoren Werke Ag Kaltkammer-Druckgießmaschine mit einer horizontalen oder schrägen Füllkammer
EP0940206A1 (fr) * 1998-03-04 1999-09-08 Alusuisse Technology & Management AG Décrotteur d'oxyde
DE10122028A1 (de) * 2001-05-07 2002-11-14 Buehler Druckguss Ag Uzwil Verfahren zum Druckgiessen und Druckgiessmaschine
DE10144945A1 (de) * 2001-09-12 2003-04-10 Alcan Bdw Gmbh & Co Kg Verfahren zum Steuern eines Vakuumventils einer Vakuumdruckgießvorrichtung sowie Vakuumdruckgießvorrichtung

Also Published As

Publication number Publication date
DE50301106D1 (de) 2005-10-06
EP1491276B1 (fr) 2005-08-31
ATE303216T1 (de) 2005-09-15

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