EP0711616B1 - Vorrichtung zum Giessen von Metallen - Google Patents
Vorrichtung zum Giessen von Metallen Download PDFInfo
- Publication number
- EP0711616B1 EP0711616B1 EP95116400A EP95116400A EP0711616B1 EP 0711616 B1 EP0711616 B1 EP 0711616B1 EP 95116400 A EP95116400 A EP 95116400A EP 95116400 A EP95116400 A EP 95116400A EP 0711616 B1 EP0711616 B1 EP 0711616B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melt
- casting
- level
- valve
- 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.)
- Expired - Lifetime
Links
Images
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
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
-
- 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 device for casting metals according to the preamble of claim 1.
- Such devices are used, for example, during manufacture lost cores applied to plastic injection molded parts, such as she and others be used in the automotive industry.
- the Connection between the casting line and the casting mold interrupted be, whereby no liquid metal may flow out.
- the pouring line should not be complete be emptied to allow time for the next pouring process save and deposits on the walls of the pouring pipe too avoid.
- the metal mirror in the Line set so that it is slightly below the separation point is stable between the mold and the pipe.
- the metal level in the system is about one Riser pipe specified, the height of the desired metal level corresponds.
- An overflow opening is provided in the riser which can be opened via an overflow valve. After The overflow opening ends when the casting process is completed opened so that excess metal can drain off.
- the pouring pipe and the riser pipe form communicating tubes, so that the metal level in the pouring line is not below the height specified by the overflow opening of the riser pipe can sink. This will cause the melt to flow back the pouring pipe into the reservoir through a check valve prevented.
- the known device that is Riser pipe arranged outside of the melting tank so that it must be heated in order to solidify the melt in the To prevent riser pipe.
- the overflow opening flowing melt is released freely into the melt container returned. Since the liquid metal is in contact with air If it comes into contact, an oxidation can occur which The quality of the melt is impaired.
- WO-A-91/17010 is a valve mechanism for casting Metal alloys known to have a low melting point, in which a piston pump is provided in a melt container, by means of which the melt via a casting line to the casting mold can be pumped.
- the piston pump can melt from the Suck the casting container through suction openings, via valves are lockable.
- the whole, the cylinder of the piston pump and the valve-receiving block is in the melt in the Melt container arranged.
- a riser pipe over which the Level of the metal level in the pouring line would be adjustable, is not scheduled.
- the level of the melt in the pouring line is solely via the piston pump and the valve devices set. Here too there is in the melt the melt container the risk of oxidation due to Air contact.
- the object of the invention is therefore the setting of Allow metal levels in the system without additional Heaters for the riser are needed, and to prevent oxidation of the melt.
- this is inert Medium an inert liquid, especially glycol, because this significantly simplifies handling.
- an inert gas preferably nitrogen, be used.
- level meters in the melt container provided about the level of the melt and / or the inert medium is detectable. So can new melt is supplied in good time.
- the height of the overflow opening is preferably at or somewhat below the level of the separation point between the pouring line and Mold.
- the length of the Riser tube changeable to fit different tool dimensions to be adaptable.
- this is Overflow valve can be opened in coordination with the pouring process lockable. Because when opening the overflow valve Pressure relief in the pouring line can be done via the Overflow valve the pouring process can be specifically stopped.
- the overflow valve is preferably via a control device located outside the melting tank actuatable.
- the melt is pumped to the mold.
- the for The valves necessary for the pumping process are in a valve block arranged, from which the pouring branch branches.
- the riser branches within the Valve blocks from the pouring line so that the riser, the Overflow valve and the valve block form a structural unit, which are pre-assembled in the melt container can.
- the single figure shows a schematic representation of a Pouring device according to the invention.
- liquid metal 2 In a melt container 1, for example an insulated double-walled Steel tank, is liquid metal 2, especially one Alloy with low melting point.
- the metal 2 is, for example, a flexible, heated pouring line 3 Casting mold 4 fed into the metal from the bottom up is filled.
- the liquid metal 2 is under pressure pressed into the mold 4, the in the mold 4 contained air through a between the mold halves 5, 6th existing gap 7 or a relief valve, not shown escapes.
- the metal 2 is from the melt container 1 via a Dosing pump 8 in the casting line 3 and the casting mold 4 promoted.
- the metering pump 8 is designed as a piston pump, the piston 9, for example, hydraulically via a drive device 10 is drivable. Usually it becomes liquid Metal by lifting the piston 9 via an intake duct 11 sucked into the cylinder chamber 12 and after closing one Valve 13 by lowering the piston 9 into the pouring line 3 pressed in.
- the pouring line 3 is through a check valve 14 shut off, so that no pressure relief Melt can flow back into the melt container.
- the Dosing pump 8 and the associated valves 13, 14 are in one Valve block 15 is provided, which is pre-assembled as a structural unit in the melt container 1 can be used.
- inert liquid 20 especially glycol, provided that oxidation on Melt level prevented.
- a gas preferably nitrogen, can be used.
- the level of the inert liquid 20 exceeds the overflow opening 17 of the riser pipe 16.
- level meters 21, 22 are provided.
- the temperature of the The melt is also via a temperature sensor 23 supervised.
- a lost core 24 for plastic injection molded parts such as for series production of plastic parts will be used in the automotive industry the liquid metal 2 by means of the metering pump 8 via the Pouring pipe 3 into the mold 4 from bottom to top, the casting pressure being maintained for as long as until the metal has solidified in the mold 4.
- the connection between the pouring line 3 and the mold 4 are interrupted.
- the metal level 25 in the system must be slightly below the separation point 26 between the casting line 3 and the casting mold 4 can be set.
- the overflow valve 18 of the riser pipe 16 opened which relieves pressure in the pouring line 3 causes excess metal through the overflow opening 17 can flow back into the melt container 1.
- the riser pipe 16 and the pouring line 3 form communicating tubes, so that the metal level 25 in the pouring line 3 is not below the height the overflow opening 17 can drop.
- liquid metal 2 in the melt container 1 inert liquid 20, in particular glycol is provided, which also exceeds the overflow opening 17 of the riser pipe 16, that comes from the overflow opening 17 of the riser 16 leaking metal does not come into contact with air, but flows through the inert liquid 20 into the melt bath back. This will cause oxidation of the backflow Prevents metal and the melt 2 retains the desired Composition.
- the device according to the invention thus Metal level 25 in the pouring line 3 in a simple manner the desired height, with additional heating for the riser pipe 16 is not required. At the same time an oxidation of the flowing back via the overflow opening 17 Metal through the inert liquid 20 reliably prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
- 1
- Schmelzebehälter
- 2
- flüssiges Metall
- 3
- Gießleitung
- 4
- Gießform
- 5
- Formhälfte
- 6
- Formhälfte
- 7
- Spalte
- 8
- Dosierpumpe
- 9
- Kolben
- 10
- Antriebseinrichtung
- 11
- Ansaugkanal
- 12
- Zylinderkammer
- 13
- Ventil
- 14
- Rückschlagventil
- 15
- Ventilblock
- 16
- Steigrohr
- 17
- Überströmöffnung
- 18
- Überströmventil
- 19
- Kontrolleinrichtung
- 20
- inerte Flüssigkeit
- 21
- Füllstandsmesser
- 22
- Füllstandsmesser
- 23
- Temperaturfühler
- 24
- Kern
- 25
- Metallniveau
- 26
- Trennstelle
Claims (9)
- Vorrichtung zum Gießen von Metallen, inbesondere von Legierungen mit niedrigem Schmelzpunkt, mit einem Schmelzebehälter (1), der über eine Gießleitung (3) mit einer Gießform (4) verbunden ist, mit einem von der Gießleitung (3) abzweigenden Steigrohr (16), das eine Überströmöffnung (17) aufweist, über die das Niveau (25) des Metallspiegels in der Gießleitung (3) einstellbar ist und die über ein Überströmventil (18) öffenbar und verschließbar ist, und mit einem Rückschlagventil (14) in der Gießleitung (3), das ein Zurückfließen der Schmelze in den Schmelzebehälter (1) verhindert, dadurch gekennzeichnet, daß das Steigrohr (16) innerhalb des Schmelzebehälters (1) angeordnet ist und wenigstens über einen Teil seiner Höhe von der Schmelze umgeben ist, daß über der Schmelze (2) ein inertes Medium (20) vorgesehen ist, und daß die Überströmöffnung (17) des Steigrohrs (16) unterhalb des Spiegels des inerten Mediums (20) liegt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das inerte Medium (20) eine inerte Flüssigkeit, insbesondere Glykol ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das inerte Medium (20) ein Gas, insbesondere Stickstoff, ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in dem Schmelzebehälter (1) Füllstandsmesser (21, 22) vorgesehen sind, über die das Niveau der Schmelze und/oder des inerten Mediums (20) feststellbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Höhe der Überströmöffnung (17) auf oder etwas unterhalb der Höhe der Trennstelle (26) von Gießleitung (3) und Gießform (4) liegt.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Länge des Steigrohrs (16) veränderbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Überströmventil (18) in Abstimmung mit dem Gießvorgang öffenbar und verschließbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Überströmventil (18) über eine ausserhalb des Schmelzebehälters (1) liegende Kontrolleinrichtung (19) betätigbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 8, wobei die Schmelze über eine Pumpe (8) zu der Gießform (4) gefördert wird und die für den Pumpvorgang nötigen Ventile (13, 14) in einem Ventilblock (15) angeordnet sind, von dem die Gießleitung (3) abzweigt, dadurch gekennzeichnet, daß das Steigrohr (16) innerhalb des Ventilblocks (15) von der Gießleitung (3) abzweigt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4440768 | 1994-11-15 | ||
DE4440768A DE4440768C1 (de) | 1994-11-15 | 1994-11-15 | Vorrichtung zum Gießen von Metallen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0711616A2 EP0711616A2 (de) | 1996-05-15 |
EP0711616A3 EP0711616A3 (de) | 1997-05-07 |
EP0711616B1 true EP0711616B1 (de) | 1999-05-26 |
Family
ID=6533377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95116400A Expired - Lifetime EP0711616B1 (de) | 1994-11-15 | 1995-10-18 | Vorrichtung zum Giessen von Metallen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5657812A (de) |
EP (1) | EP0711616B1 (de) |
JP (1) | JPH08224651A (de) |
CA (1) | CA2162800A1 (de) |
DE (2) | DE4440768C1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3817786B2 (ja) | 1995-09-01 | 2006-09-06 | Tkj株式会社 | 合金製品の製造方法及び装置 |
JP3357974B2 (ja) * | 1996-06-12 | 2002-12-16 | 有明セラコ株式会社 | 金属溶湯の給送方法及び装置 |
US5924471A (en) * | 1997-07-30 | 1999-07-20 | Gnb Technologies, Inc. | Method of fabricating lead bushings and batteries using same |
JP3739541B2 (ja) * | 1997-09-05 | 2006-01-25 | パイオニア株式会社 | 情報再生装置 |
US5983976A (en) * | 1998-03-31 | 1999-11-16 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
US6135196A (en) * | 1998-03-31 | 2000-10-24 | Takata Corporation | Method and apparatus for manufacturing metallic parts by injection molding from the semi-solid state |
US6474399B2 (en) | 1998-03-31 | 2002-11-05 | Takata Corporation | Injection molding method and apparatus with reduced piston leakage |
US6540006B2 (en) | 1998-03-31 | 2003-04-01 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
US6513571B1 (en) * | 1998-05-27 | 2003-02-04 | Hayes Lemmerz International, Inc. | Apparatus for automatic refilling of a low pressure casting machine |
GB9813826D0 (en) * | 1998-06-27 | 1998-08-26 | Campbell John | Dispensing apparatus and method |
US6578620B1 (en) * | 1999-07-02 | 2003-06-17 | Alcoa Inc. | Filtering molten metal injector system and method |
US6540008B1 (en) | 1999-07-02 | 2003-04-01 | Alcoa Inc. | Molten metal injector system and method |
US6666258B1 (en) | 2000-06-30 | 2003-12-23 | Takata Corporation | Method and apparatus for supplying melted material for injection molding |
WO2002038312A1 (en) * | 2000-11-07 | 2002-05-16 | Alcoa Inc. | Molten metal injector system and method |
WO2002038313A1 (en) * | 2000-11-09 | 2002-05-16 | Alcoa Inc. | Filtering molten metal injector system and method |
US6742568B2 (en) * | 2001-05-29 | 2004-06-01 | Alcoa Inc. | Casting apparatus including a gas driven molten metal injector and method |
ITPD20010301A1 (it) * | 2001-12-28 | 2003-06-28 | Bbs Riva Spa | Attrezzatura particolarmente per la formatura di getti in metallo concollegamento idraulico tra forno di attesa e stampo e procedimento per |
US6742570B2 (en) | 2002-05-01 | 2004-06-01 | Takata Corporation | Injection molding method and apparatus with base mounted feeder |
US6841120B2 (en) * | 2002-06-13 | 2005-01-11 | Alotech Ltd. Llc | Dispensing apparatus and method |
US6951238B2 (en) * | 2003-05-19 | 2005-10-04 | Takata Corporation | Vertical injection machine using gravity feed |
US6880614B2 (en) * | 2003-05-19 | 2005-04-19 | Takata Corporation | Vertical injection machine using three chambers |
US6945310B2 (en) * | 2003-05-19 | 2005-09-20 | Takata Corporation | Method and apparatus for manufacturing metallic parts by die casting |
CN104588611B (zh) * | 2015-02-28 | 2016-09-07 | 个旧市晟鼎纯锡工艺厂 | 一种压力铸造装置及压力铸造方法 |
TWI597111B (zh) * | 2016-02-24 | 2017-09-01 | 中傳企業股份有限公司 | 應用於壓鑄機的射料系統 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR905901A (fr) * | 1943-03-06 | 1945-12-18 | Machine travaillant à l'aide d'un piston presseur pour le moulage mécanique de pièces métalliques | |
DE1124195B (de) * | 1957-06-21 | 1962-02-22 | Heinrich Josef Baggeler | Verfahren und Vorrichtung zum Giessen von Metallkoerpern mittels Druckgas |
DE1055764B (de) * | 1957-10-28 | 1959-04-23 | Heinrich Josef Baggeler | Vorrichtung zum Giessen von Metallkoerpern, insbesondere Metallplatten |
BG22157A1 (de) * | 1975-10-27 | 1977-05-20 | ||
GB8425182D0 (en) * | 1984-10-05 | 1984-11-14 | Frys Metals Ltd | Casting apparatus |
US4958675A (en) * | 1988-11-08 | 1990-09-25 | Electrovert Ltd. | Method for casting metal alloys with low melting temperatures |
GB8927088D0 (en) * | 1989-11-30 | 1990-01-31 | Frys Metals Ltd | Casting apparatus |
US4991641A (en) * | 1990-05-07 | 1991-02-12 | Electrovert Ltd. | Method of and apparatus for metal casting |
US5125450A (en) * | 1990-05-07 | 1992-06-30 | Electrovert Ltd. | Method of and system for controlling flow of molten liquid to cast metal alloys |
US5181551A (en) * | 1991-09-25 | 1993-01-26 | Electrovert Ltd. | Double acting cylinder for filling dies with molten metal |
-
1994
- 1994-11-15 DE DE4440768A patent/DE4440768C1/de not_active Expired - Fee Related
-
1995
- 1995-10-18 EP EP95116400A patent/EP0711616B1/de not_active Expired - Lifetime
- 1995-10-18 DE DE59506022T patent/DE59506022D1/de not_active Expired - Fee Related
- 1995-11-09 JP JP7324957A patent/JPH08224651A/ja active Pending
- 1995-11-13 US US08/558,167 patent/US5657812A/en not_active Expired - Fee Related
- 1995-11-14 CA CA002162800A patent/CA2162800A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0711616A3 (de) | 1997-05-07 |
EP0711616A2 (de) | 1996-05-15 |
DE4440768C1 (de) | 1996-07-25 |
CA2162800A1 (en) | 1996-05-16 |
DE59506022D1 (de) | 1999-07-01 |
JPH08224651A (ja) | 1996-09-03 |
US5657812A (en) | 1997-08-19 |
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