EP1713602B1 - Machine a couler pour produire des pieces coulees en fonte - Google Patents

Machine a couler pour produire des pieces coulees en fonte Download PDF

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Publication number
EP1713602B1
EP1713602B1 EP05706884A EP05706884A EP1713602B1 EP 1713602 B1 EP1713602 B1 EP 1713602B1 EP 05706884 A EP05706884 A EP 05706884A EP 05706884 A EP05706884 A EP 05706884A EP 1713602 B1 EP1713602 B1 EP 1713602B1
Authority
EP
European Patent Office
Prior art keywords
casting
chamber
mold
casting machine
casting chamber
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.)
Not-in-force
Application number
EP05706884A
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German (de)
English (en)
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EP1713602A1 (fr
Inventor
Friedrich Klein
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Individual
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Individual
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Publication of EP1713602A1 publication Critical patent/EP1713602A1/fr
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Publication of EP1713602B1 publication Critical patent/EP1713602B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2053—Means for forcing the molten metal into the die using two or more cooperating injection pistons

Definitions

  • the invention relates to a casting machine for the production of castings, in particular to a casting machine for the production of castings from non-ferrous metals by a cold chamber casting process.
  • Conventional cold chamber casting machines for the production of castings by the cold chamber casting method include a closing unit of three machine plates, namely a machine plate, a movable platen and a fixed platen, four columns, along which the movable platen is reciprocally movable, and a drive unit for Driving the movable platen, usually via a hydraulically driven toggle or double toggle.
  • a mold is patterned with a movable mold half on the movable platen and with a fixed mold half on the fixed platen. The necessary clamping force is applied via the clamping unit by clamping the columns between the machine plate and the fixed clamping plate.
  • a casting unit with which a melt forms a mold cavity formed by the mold perpendicular to the dividing plane, i.e., a casting unit, joins. to the parting plane of the two mold halves, is fed through a casting chamber through the fixed platen and the solid mold half of the mold.
  • the casting unit has for this purpose a usually hydraulically driven, movable in the casting chamber casting piston.
  • an ejection unit is integrated behind the movable platen, which usually also hydraulically driven and ejector pins which are passed through the movable platen to strip the cast parts from the movable mold half after opening the mold.
  • the machine side for example, consists of hydraulic cylinders, which are usually mounted on the movable platen, sometimes on the fixed clamping plate on.
  • the casting process in cold chamber casting machines is known to run in the three successive phases Vor Reichllphase, Formglallphase and Nachbuchphase.
  • the casting chamber is filled with melt, and the casting piston conveys the melt into the vicinity of the gate.
  • the dosage may e.g. mechanically via a spoon or réellegasbeaufschlagt from a holding furnace via a channel or via a riser, as in the so-called Vacuralvon done.
  • the dosing times are typically between 1s and 30s depending on the dosing and dosing quantity. Due to this relatively long dosing time there is a risk that a part of the melt already solidifies in the casting chamber.
  • the casting piston speed in the prefill phase can typically be set in a range between 0.1 m / s and 1.0 m / s, so that, on the one hand, the melt is conveyed as quickly as possible and, on the other hand, trapped air. can be avoided as far as possible by overturning a wave of the melt which builds up before the casting piston, by formation of the spray and / or by reflection in the casting residue region.
  • the mold filling phase is as short as possible; It usually lasts between 5ms to 60ms, in some cases much longer.
  • the casting wheel moves the melt at high speed, adjustable typically in a range up to 10 ms and more.
  • At the end of the mold filling phase by converting the kinetic energy into a Pressure pulse high pressures occur, so there is a risk of tearing the mold.
  • Modern casting machines therefore have means to absorb the kinetic energy towards the end of the mold filling phase.
  • the melt solidifies under the emphasis, and air trapped during mold filling is compressed under static pressure.
  • the proportion of entrapped air in the volume porosity is small.
  • the volume porosity usually consists of voids whose cause is the insufficient supply of a shrinkage-related portion of the melt at the transition liquid / solid.
  • the make-up is made more difficult by the fact that the melt already partially solidifies during the metering in the prefilling phase.
  • the flow path of the melt in the casting system is relatively long, so that the melt releases relatively much heat along its flow path.
  • the gates are usually thin-walled in relation to the wall thickness of the castings, which means that the melt in some areas of the casting is still liquid, while it is already partially solidified in the gate area, which makes a further desserts no longer possible or anyway difficult.
  • the formation of a solidified edge shell in the casting chamber after metering has the consequence that a part of the melt is available neither for the mold filling, nor for the Nachspeisung the shrinkage-related portion in the mold cavity.
  • the high pressures require a relatively large thickness of the fixed platen and consequently a correspondingly long casting chamber, which in turn limits the filling level in the casting chamber to typically 15% to at most about 70%, with a correspondingly large volume of air in the casting chamber.
  • the conventional orientation of the casting unit relative to the closing unit requires relatively long flow paths of the melt in the casting chamber and in the casting system and often crimping of the casting system / anvil.
  • the application of high pressures may also result in elastic deformation of solidified casting residue and casting chamber in the casting residue region and thereby jamming of the casting residue in the casting chamber, so that high opening forces may be needed to rip the casting residue from the casting chamber. This can lead to high and / or premature wear of casting chamber and casting piston.
  • the clamping of the casting residue in the casting chamber also often results in the application of an excess of piston lubricant result, which can lead to inclusions in the casting.
  • the casting unit is adapted to convey the melt in its casting chamber vertically from below to the mold and thus also substantially perpendicular to the generally horizontal direction of movement of the mold clamping unit.
  • the casting chamber To be able to feed the pouring unit from above with melt, it is arranged with its casting chamber generally pivotable about a horizontal axis, ie it can be pivoted with its casting chamber for filling in a position inclined to the vertical.
  • Such casting machines are for example in the published patent applications JP 03-128160 A and JP 01-186255 A and the patent US 4,690,197 disclosed.
  • the invention is based on the technical problem of providing a casting machine of the type mentioned, with which the above-mentioned difficulties conventional casting machines can be avoided in whole or in part.
  • the invention solves this problem by providing a casting machine having the features of claim 1.
  • a respective casting unit is adapted to convey melt in its casting chamber with a horizontal conveying direction component perpendicular to the direction of movement of the mold closing unit.
  • This design of the casting unit has many advantages over the conventional design with the direction of movement of the mold closing unit parallel conveying direction of the melt. Thus, a vertical deflection of the melt in the casting system to the gate can be avoided.
  • the casting chamber may be oriented in the division plane or at least parallel to it. It is possible for a given casting volume relatively small length of the casting chamber and a relatively high degree of filling of the same. For desserts of the shrinkage-related portion of the melt on the casting system in the mold cavity is sufficient, a relatively low emphasis.
  • the casting chamber may laterally or at least with parallel to the parting plane component lead to the mold cavity and does not need to be passed axially through the fixed platen.
  • the casting machine can comprise only one casting unit or, according to claim 2, several casting units, each with an associated casting chamber, in order to be able to simultaneously feed melt into the mold at several points.
  • parts with a larger volume or larger explosive surface, ie surface, with consistently short mold filling times can be poured.
  • the casting chamber according to claim 3 in height and / or its inclination is adjustable. This advantageously allows adaptation to the particular application or to the respective mounted mold.
  • the casting chamber is designed in several parts. Specifically, a three-part casting chamber is provided in an embodiment according to claim 5, which includes two half-shells within the mold, to which a ring connects to the outside. Of the two half-shells is one of the fixed mold half, the other associated with the movable mold half.
  • the casting chamber is thermally insulated from the two mold halves.
  • this may e.g. be realized by a thermal insulation of the two casting chamber half shells relative to the respective facing mold half.
  • a closure of the casting chamber as far as possible relative to the casting system after closing the mold until the start of the mold filling phase is made possible.
  • the barrel can remain partially open when needed.
  • a common plate as a solid mold half and fixed platen. This concept allows for a comparatively fast patterning of the forms.
  • Casting machine for producing cast parts, in particular made of non-ferrous metals, according to a cold chamber casting method comprises a mold clamping unit 1 and a pouring unit 2.
  • the mold clamping unit 1 conventionally comprises a rectangular, movable platen 3, which is attached to four pillars 4 and optionally not shown, bottom side slides is movably guided.
  • the columns 4 extend through corresponding column passage openings in the corner regions of the movable platen 3.
  • the movable platen 3 is reciprocally movable along the columns 4 horizontally in the axial direction by means of a toggle lever drive mechanism 5.
  • a rear machine plate 6 forms the rear end of the casting machine.
  • the movable platen 3 carries a Auswerfech in the usual way. 7
  • a front end plate 8 is fixed to an in Fig. 1 Not shown base frame or base frame of the casting machine mounted and functioning simultaneously as a fixed platen as well as a solid mold half, with a in the space between the columns 4 and between movable and fixed platen 3, 8 introduced, movable mold half 9 cooperates to form a mold with a mold cavity to be poured.
  • the necessary clamping force is applied by the mold clamping unit 1 by tensioning the columns 4 between the rear machine plate 6 and the fixed platen or mold half 8.
  • the casting unit 2 includes a conventional holding furnace 10 and a ring-channel casting chamber 11, can be metered into the tempered by the holding furnace 10 melt and conveyed by a casting piston in Gellofitscardi 12 to the mold cavity in the mold.
  • the casting chamber 11 extends, as can be seen, with its longitudinal direction 12 parallel to the dividing plane, i. to the parting plane of solid and movable mold half 8, 9.
  • the casting chamber 11 is mounted with a horizontal longitudinal or conveying direction 12 via a support 13 on a base frame 14. Accordingly, the moves in the FIGS. 2 and 3 with its front end region indicated casting piston 15 horizontal.
  • the casting chamber 11 extends from a rear region outside of the mold halves 8, 9, in which a riser 16 opens for melt supply, to a front region, which is located in the region of the two mold halves 8, 9.
  • the casting chamber 11 leads laterally from the outside in the parting plane between the mold halves 8, 9 to the mold cavity and not axially through one of the two mold halves 8, 9 therethrough.
  • a core pull 17 for partially closing the run and a core pull 18 for mold venting via a vacuum valve are provided in the fixed mold half 8.
  • the 4 to 6 illustrate a structurally advantageous implementation of the casting chamber 11.
  • the casting chamber 11 is designed in three parts with an outer chamber ring 11a and two adjoining chamber half shells 11b, 11c.
  • the two half-shells 11b, 11c are located in the region between the two mold halves 8, 9, one of the two half-shells 11b, 11c being associated with one of the two mold halves 8, 9.
  • heating means may also be provided for heating the front casting chamber section located in the region inside the mold halves 8, 9.
  • a closure valve 20 is provided, with which the casting chamber 11 against the casting system after closing the mold to the start of Formphilllphase can be largely closed.
  • the barrel can remain partially open.
  • Fig. 6 this can remain a vent 21 in the upper part of the Gellohuntaustritts.
  • the valve 20 is of a conventional, mechanically, electrically or hydraulically controlled type. How out Fig. 6 further apparent, the Melt feed in this embodiment via a riser 22, which opens into a radial bore 23 of the Gellohuntrings 11 a.
  • the casting chamber is arranged adjustable in its horizontal height and / or in its inclination relative to the horizontal. It is understood that the casting process using the casting machine according to the invention in the usual three phases, i. Prefill, Formglallphase and Nachbuchphase, runs to castings, for. from Al and Mg alloys in Kalthuntg intelligent processor or other materials and / or produce with a different casting process.
  • FIG. 7 shows such a variant of the casting machine of Fig.1 with two casting units 2a, 2b. Otherwise, the embodiment of Fig. 7 that of Fig. 1 , so that the same reference numerals are used for functionally identical elements and to that extent to the above description Fig. 1 can be referenced.
  • Both casting units 2 a, 2 b are of the same construction as the casting unit 2 of FIG Fig. 1 each with a holding furnace 10a, 10b and a casting chamber 11e, 11f for transporting melt in the respective longitudinal direction 12a, 12b of the respective casting chamber 11e, 11f.
  • each of the two casting chambers 11a, 11f corresponds to the above for this purpose with reference to the individual casting chamber 11 of the casting machine of Fig. 1 given realization possibilities, the resulting properties and advantages apply in the same way as above to the Fig. 1 to 6 explained.
  • the two casting chambers 11e, 11f may face each other horizontally at the same height or at different heights, or it may be provided that the two casting chambers 11e, 11f are variably set individually in their height and / or in their inclination to the horizontal can.
  • conveying directions 12a, 12b of the two casting chambers 11e, 11f are opposite to one another at the same or different height or are non-parallel to each other in the plane perpendicular to the horizontal, axial lifting / moving direction of the conveying unit 1.
  • This doubling of the volume flow of melt thus allows the casting of parts with double volume or double explosive surface with a consistently short mold filling time and while maintaining the other advantages, as above for the casting machine of Fig. 1 are indicated.
  • the measure of the casting chamber orientation according to the invention with the conveying direction component parallel to the dividing plane enables relatively problem-free placement of the two casting units 2a, 2b at the side of the casting mold.
  • more than two casting units can be placed in the same way laterally next to the casting mold or around the casting mold, if necessary.
  • the two measures to form the fixed platen simultaneously as a solid mold half and the respective casting chamber designed so that the pouring unit in question promotes melt with a direction perpendicular to the direction of movement of the mold clamping unit conveying direction each have in themselves and in combination considerable advantages.
  • These advantages are achieved in whole or in part also in alternative embodiments, in which only one of the two measures is realized or the conveying direction of a respective casting chamber is not exactly perpendicular to the direction of movement of the mold clamping unit, but deviating from an acute or obtuse angle with the direction of movement, i. the axial stroke direction, the mold closing unit includes.
  • the conveying direction of the casting chamber in each case has its main component preferably in the plane perpendicular to the stroke direction of the conveying unit.
  • the shape design with the same time acting as a solid mold half fixed platen allows fast up and Abmustern the forms used, including the lateral arrangement of the casting unit contributes.
  • the solid mold half 8 can be relatively easily replaced without obstruction by the casting unit on the front end of the machine.
  • a vertical deflection of the melt in the casting system to the gate in the parting plane can be avoided, which helps that the casting chamber runs parallel or parallel component with respect to the parting plane, optionally with variable height adjustment.
  • the casting chamber may be constructed in the region of the casting mold from half-shells, one of which is associated with one of the two mold halves, so that they can be received in lateral semi-cylindrical recesses of the mold halves.
  • the melt can be supplied via a riser after closing or locking the mold or alternatively via a filling opening from above by means of a metering device.
  • a riser after closing or locking the mold or alternatively via a filling opening from above by means of a metering device.

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

Claims (8)

  1. Machine de coulée pour la fabrication de pièces moulées, notamment de machines de coulée à chambre froide, comprenant
    - une unité de fermeture de moule (1) et au moins une unité de coulée (2) avec chambre de coulée correspondante (11),
    caractérisée en ce que
    - la chambre de coulée (11) est disposée avec une composante de direction longitudinale (12) horizontale, verticale au sens de déplacement de l'unité de fermeture de moule (1).
  2. Machine de coulée selon la revendication 1, caractérisée en outre en ce qu'au moins deux unités de coulée (2a, 2b) sont prévues, dont les chambres de coulée (11e, 11f) sont disposées avec des composantes de direction longitudinale (12a, 12b) verticales par rapport au sens de déplacement de l'unité de fermeture de moule (1).
  3. Machine de coulée selon la revendication 1 ou 2, caractérisée en outre en ce que la chambre de coulée ou au moins une des chambres de coulée (11) est réglable en hauteur et/ou dans son inclinaison par rapport à l'horizontale.
  4. Machine de coulée selon l'une quelconque des revendications 1 à 3, caractérisée en outre en ce que la chambre de coulée ou au moins une des chambres de coulée (11) est exécutée en plusieurs parties.
  5. Machine de coulée selon la revendication 4, caractérisée en outre en ce que la chambre de coulée ou au moins une des chambres de coulée est exécutée en trois parties avec une bague extérieure (11a) de chambre de coulée et deux demi-coques (11b, 11c) de chambre de coulée s'y raccordant de manière axiale.
  6. Machine de coulée selon l'une quelconque des revendications 1 à 5, caractérisée en outre par une isolation thermique (19) entre la chambre de coulée, ou une des chambres de coulée (11), et la moitié de moule (8, 9) fixe et/ou mobile.
  7. Machine de coulée selon l'une quelconque des revendications 1 à 6, caractérisée en outre par un moyen de fermeture (20) pour la fermeture complète ou quasi complète de la chambre de coulée ou d'au moins une des chambres de coulée par rapport au système de coulée après la fermeture du moule jusqu'au démarrage d'une phase de remplissage de moule.
  8. Machine de coulée selon l'une quelconque des revendications 1 à 7, caractérisée en outre en ce que l'unité de fermeture de moule (1) comprend une plaque de serrage mobile (3) pour une moitié de moule mobile (9) et une plaque de serrage fixe (8) pour une moitié de moule fixe, une plaque commune (8) servant de plaque de serrage fixe et de moitié de moule fixe.
EP05706884A 2004-02-12 2005-01-14 Machine a couler pour produire des pieces coulees en fonte Not-in-force EP1713602B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004008157A DE102004008157A1 (de) 2004-02-12 2004-02-12 Gießmaschine zur Herstellung von Gussteilen
PCT/EP2005/000300 WO2005080024A1 (fr) 2004-02-12 2005-01-14 Machine a couler pour produire des pieces coulees en fonte

Publications (2)

Publication Number Publication Date
EP1713602A1 EP1713602A1 (fr) 2006-10-25
EP1713602B1 true EP1713602B1 (fr) 2008-04-09

Family

ID=34813499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05706884A Not-in-force EP1713602B1 (fr) 2004-02-12 2005-01-14 Machine a couler pour produire des pieces coulees en fonte

Country Status (4)

Country Link
EP (1) EP1713602B1 (fr)
AT (1) ATE391567T1 (fr)
DE (2) DE102004008157A1 (fr)
WO (1) WO2005080024A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007520B4 (de) * 2007-02-15 2019-02-07 Volkswagen Ag Druckgießmaschine mit einer Druckgießform
DE102007062436B4 (de) 2007-12-20 2010-11-11 Gottfried Wilhelm Leibniz Universität Hannover Verfahren zur Herstellung eines Gussteils

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757933A (fr) * 1969-10-25 1971-04-01 Gkn Group Services Ltd Perfectionnements apportes aux appareils de coulee de metaux par matricage
JPS5913941B2 (ja) * 1980-03-27 1984-04-02 宇部興産株式会社 横型締，竪鋳込型ダイカスト法および装置
CA1231825A (fr) * 1984-05-23 1988-01-26 Sadayuki Dannoura Installation de coulee sous pression
DE3640370A1 (de) * 1985-11-26 1987-05-27 Ube Industries Spritzverfahren einer spritzgussmaschine
JPS6336959A (ja) * 1986-07-31 1988-02-17 Ube Ind Ltd 高圧鋳造における鋳造方法
JPH0796152B2 (ja) * 1988-01-19 1995-10-18 宇部興産株式会社 マルチショット型成形機
JPH0667545B2 (ja) * 1988-06-10 1994-08-31 宇部興産株式会社 射出成形機
JPH03128160A (ja) * 1989-10-13 1991-05-31 Sanko Diecast Kogyo Kk キャスティングマシンのスリーブ潤滑装置
US4986335A (en) * 1990-05-14 1991-01-22 Farley, Inc. Dies for horizontal-vertical die casting machines
US4986334A (en) * 1990-06-11 1991-01-22 Farley, Inc. Bottom vertical slide on a horizontal movable die of a vertical injector die casting machine
DE4132732A1 (de) * 1991-10-01 1993-04-08 Friedhelm Prof Dr Ing Kahn Verfahren und vorrichtung zur erzeugung von bauteilen
JPH06126413A (ja) * 1992-10-23 1994-05-10 Olympus Optical Co Ltd 高速射出鋳造装置
DE19802342C1 (de) * 1998-01-22 1999-03-04 Gustav Ohnsmann Einrichtung zur Metallbeschickung waage- und senkrechter Kaltkammer - Druckgießmaschinen und Verfahren
EP1046444B1 (fr) * 1999-04-20 2002-03-06 Ritter Aluminium Giesserei Gmbh Procédé de coulée sous pression
JP4597349B2 (ja) * 2000-11-10 2010-12-15 東芝機械株式会社 ダイカストマシン及びダイカストマシンの制御方法

Also Published As

Publication number Publication date
EP1713602A1 (fr) 2006-10-25
ATE391567T1 (de) 2008-04-15
WO2005080024A1 (fr) 2005-09-01
DE102004008157A1 (de) 2005-09-01
DE502005003646D1 (fr) 2008-05-21

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