EP1177058B1 - Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens - Google Patents
Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens Download PDFInfo
- Publication number
- EP1177058B1 EP1177058B1 EP00916814A EP00916814A EP1177058B1 EP 1177058 B1 EP1177058 B1 EP 1177058B1 EP 00916814 A EP00916814 A EP 00916814A EP 00916814 A EP00916814 A EP 00916814A EP 1177058 B1 EP1177058 B1 EP 1177058B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seal
- casting
- plunger
- piston
- diameter
- 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
- 238000004512 die casting Methods 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 title description 14
- 238000000034 method Methods 0.000 title description 8
- 238000005266 casting Methods 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 239000000155 melt Substances 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B22D17/14—Machines with evacuated die cavity
Definitions
- the invention relates to a piston-side seal in die-casting machines which are subjected to a vacuum process, especially after the Vacural process, work and with an extraction gap or suction box are equipped.
- the dosage of the melt takes place in the filling chamber via a in the molten bath befindliches Intake manifold.
- This melt dosage is caused by the Applying a vacuum, which after closing the mold is opened by opening a vacuum valve.
- this mold vacuum is also for the better and regulated vacuum effect an additional casting chamber vacuum possible, as described by the applicant in DE 30 41 340 C 2 as Vacural Die Casting described.
- a sealed area is the rear side the piston or the piston rod with the casting unit is coupled.
- a seal on a casting piston is in the US PS 3,009,218 discloses, proposed is a casting piston with a constant piston diameter over its entire Length. Due to the casting process occur in the casting chamber Damage like flushing or scoring on, this Mechanical damage also leads to damage of the casting piston. In the proposed embodiment, the Piston seal then also come to harm and the Sealing effect is not guaranteed in continuous operation.
- the invention is based on the object when using the Vacuum die casting a sealing system for a To propose casting piston, which has a long service life guaranteed and significantly reduces the risk of accidents.
- the object is achieved in that a extended casting piston via at least one paragraph, i. smaller diameter, has at its rear end and attached in the suction box seal retracted piston is in sealing connection with this.
- the seal installation is intended to be a force or positive connection made and the sealing ring can via a separation point which have its installation or Replacement without major installation measures possible.
- the selected casting piston design ensures on the one hand that mechanical piston damage not at the smaller one Seal diameter occur because this diameter no Contact with the bore of the casting chamber and is to the other by the simple manufacturing process concentricity of the G mankolben preparer given. Furthermore, after a G mankolbenabriß, which is usually in the range of advanced casting position would take place, the cooling water exit through the now open to the rear annulus.
- FIG. 1 shows the injection system 1 of a Vacural die casting machine which via anchor 2 with the fixed Clamping plate 3 is connected. Between solid Clamping plate 3 and stator part 4 of the injection system 1 is arranged the holding furnace 5 for the liquid melt. The below the melt surface in the holding furnace. 5 submerged suction pipe is designated 6. The upper end of suction pipe 6 is connected to the casting chamber 7. In the Casting 7 is casting piston 8 with the Casting piston rod 9 is connected. Casting piston rod 9 is with the actual G cordaggragat 10 connected.
- FIG. 1 An enlarged view of the inventive concept is shown in FIG.
- Casting 8 of different diameter D1 and D2 features The smaller diameter D2 is through Seal 11 in shown retracted position sealed, with the retracted position the Operating state corresponds in which the melt on the Vacuum build-up is sucked through suction tube 6, while in the Forward movement of the casting piston 8 is no longer a seal is required. It may even occur in the situation which is a flow of air or targeted use a protective gas, the sinking of the residual melt and thus the prevent a "freezing" of the melt in the intake manifold required.
- Seal 11 is by means of a clamping ring 12 frictionally connected with suction box 13.
- a T-profile can also choose a positive connection become. Preference is given to a one-sided or two-sided split seal 11 used, causing an exchange of the Sealing ring only by removal of clamping or retaining ring 12th allows.
- the part of the sealing ring can e.g. in shape an oblique stroke, whereby an optimal Sealing effect is achieved.
- the invention is not limited to that described and illustrated Embodiment limited. It also includes all professional designs within the framework of the applicable Claim 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
- Figur 1
- Einspritzsystem einer Vacural-Druckgießmaschine
- Figur 2
- Einzelheit des Gießkolben mit Absaugkasten und Abdichtung
- 1
- Einspritzsystem
- 2
- Anker
- 3
- Feste Aufspannplatte
- 4
- Ständerteil
- 5
- Warmhalteofen
- 6
- Saugrohr
- 7
- Gießkammer
- 8
- Gießkolben
- 9
- Gießkolbenstange
- 10
- Gießaggregat
- 11
- Dichtung
- 12
- Klemmring, Haltering
- 13
- Absaugkasten
Claims (4)
- Abdichtung für den Gießkolben (8) einer Druckgießmaschine mit angebautem Absaugkasten (13), bei der der Transport des Metalles aus einem Schmelze- bzw. Warmhalteofen (5) in die Gießkammer (7) mittels Evakuieren über ein Saugrohr (6) erfolgt, wobei der Durchmesser des Gießkolbens (8) größer ist als der Durchmesser der Gießkolbenstange (9), dadurch gekennzeichnet, dass der Gießkolben (8) mindestens zwei unterschiedliche Durchmesser D1 und D2 aufweist, wobei der kleinere Durchmesser D2 am hinteren Ende des Gießkolben (8) in Richtung Gießkolbenstange (9) angeordnet ist und wobei in dem, am stirnseitigen Ende der Gießkammer (7), in Richtung Gießaggregat (10) vorgesehenen Absaugkasten (13) eine dem Durchmesser D2 entsprechende Dichtung (11) angeordnet ist.
- Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtung (11) mittels eines Klemm- oder Halteringes (12) kraft- oder formschlüssig mit dem Absaugkasten (13) verbunden ist.
- Abdichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dichtung (11) über mindestens eine Teilstelle verfügt.
- Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Gießkolben (8) im Anschluss an den Gießkolbendurchmesser D2 mit einem kegelförmigen Ende und Übergangsradien ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19921496A DE19921496A1 (de) | 1999-05-08 | 1999-05-08 | Kolbenseitige Absaugabdichtung bei Anwendung des Vakuumdruckgießverfahren |
DE19921496 | 1999-05-08 | ||
PCT/DE2000/000764 WO2000067935A1 (de) | 1999-05-08 | 2000-03-10 | Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1177058A1 EP1177058A1 (de) | 2002-02-06 |
EP1177058B1 true EP1177058B1 (de) | 2003-02-19 |
Family
ID=7907580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00916814A Expired - Lifetime EP1177058B1 (de) | 1999-05-08 | 2000-03-10 | Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens |
Country Status (5)
Country | Link |
---|---|
US (1) | US6749005B1 (de) |
EP (1) | EP1177058B1 (de) |
JP (1) | JP2002543982A (de) |
DE (2) | DE19921496A1 (de) |
WO (1) | WO2000067935A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3921513B2 (ja) | 2002-04-17 | 2007-05-30 | 株式会社木村工業 | 成型装置及びそれに用いる型ユニット |
DE202006011541U1 (de) * | 2006-07-27 | 2007-12-06 | Bdw Technologies Gmbh & Co. Kg | Gießkolben |
KR20090126224A (ko) * | 2009-11-02 | 2009-12-08 | (주)엔티티 | 다이캐스팅장치 |
DE102019107325A1 (de) * | 2019-03-21 | 2020-09-24 | Engel Austria Gmbh | Aufschmelzeinheit für eine Formgebungsmaschine und Formgebungsmaschine mit einer solchen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3009218A (en) | 1958-10-22 | 1961-11-21 | David M Morgenstern | Apparatus for vacuum feeding a die casting machine |
US3254377A (en) * | 1963-04-22 | 1966-06-07 | Glenn R Morton | Fluid cooled, lubricated and sealed piston means for casting devices |
DE3041340A1 (de) * | 1980-11-03 | 1982-05-13 | Maschinenfabrik Weingarten Ag, 7987 Weingarten | Druckgiessverfahren zur herstellung von gasarmer, porenarmer und oxydarmer gussstuecke sowie druckgiessmaschine zur durchfuehrung des verfahrens |
DE3401715C2 (de) * | 1984-01-19 | 1986-02-27 | Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten | Druckgiessverfahren zur Herstellung gasarmer, porenarmer und oxydarmer Gußstücke |
US4886107A (en) * | 1986-02-28 | 1989-12-12 | Zecman Kenneth P | Piston for cold chamber |
US5076344A (en) | 1989-03-07 | 1991-12-31 | Aluminum Company Of America | Die-casting process and equipment |
DE4101592A1 (de) * | 1991-01-21 | 1992-07-23 | Mueller Weingarten Maschf | Druckgiessmaschine |
DE19754532C1 (de) * | 1997-12-09 | 1999-04-01 | Kunz Konstruktion Und Druckgie | Kupplungsvorrichtung für die Kolbenstange eines Druckgießkolbens |
US6237672B1 (en) | 1998-12-30 | 2001-05-29 | Dbm Industries, Ltd. | Self lubricating and cleaning injection piston for cold chamber injection unit |
-
1999
- 1999-05-08 DE DE19921496A patent/DE19921496A1/de not_active Withdrawn
-
2000
- 2000-03-10 EP EP00916814A patent/EP1177058B1/de not_active Expired - Lifetime
- 2000-03-10 DE DE50001278T patent/DE50001278D1/de not_active Expired - Lifetime
- 2000-03-10 JP JP2000616949A patent/JP2002543982A/ja active Pending
- 2000-03-10 WO PCT/DE2000/000764 patent/WO2000067935A1/de active IP Right Grant
- 2000-03-10 US US09/959,147 patent/US6749005B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2000067935A1 (de) | 2000-11-16 |
EP1177058A1 (de) | 2002-02-06 |
DE19921496A1 (de) | 2000-11-09 |
US6749005B1 (en) | 2004-06-15 |
JP2002543982A (ja) | 2002-12-24 |
DE50001278D1 (de) | 2003-03-27 |
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