DE3502269C1 - Die-casting die which is evacuated by way of a vacuum control - Google Patents

Die-casting die which is evacuated by way of a vacuum control

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Publication number
DE3502269C1
DE3502269C1 DE19853502269 DE3502269A DE3502269C1 DE 3502269 C1 DE3502269 C1 DE 3502269C1 DE 19853502269 DE19853502269 DE 19853502269 DE 3502269 A DE3502269 A DE 3502269A DE 3502269 C1 DE3502269 C1 DE 3502269C1
Authority
DE
Germany
Prior art keywords
die
groove
evacuated
vacuum
mold
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
Application number
DE19853502269
Other languages
German (de)
Inventor
Wilfried 7987 Weingarten Schwab
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.)
Mueller Weingarten AG
Original Assignee
Mueller Weingarten AG
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 Mueller Weingarten AG filed Critical Mueller Weingarten AG
Priority to DE19853502269 priority Critical patent/DE3502269C1/en
Application granted granted Critical
Publication of DE3502269C1 publication Critical patent/DE3502269C1/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14Machines with evacuated die cavity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to a die-casting die which is evacuated by way of a vacuum control. There have always been difficulties here in avoiding the drawing in of infiltrated air into the die-casting die. The seals composed of heat-resistant material which have hitherto been known for this purpose are problematic, particularly in the case of complex dies, and are subject to very high wear. According to the invention, these disadvantages are eliminated by the fact that a groove 1 which is connected to the vacuum line 2 is placed in the parting plane of the two die halves 3 and 4, to the outside of the die impression 5, and that the groove 7 is routed around the slide(s) 6 and is connected to the groove 1 in the parting plane. <IMAGE>

Description

Patentansprüche: 1. Druckgießform, welche über eine Vakuum-Steuerung evakuiert wird, wobei der Forminnenraum und die Trennebene der beiden Formhälften mit einem Vakuum-System in Verbindung stehen, dadurch gekennzeichnet, daß zur Absaugung von Gasen in der Trennebene der beiden Formhälften (3, 4) außerhalb der Formgravur (5) eine umlaufende, in sich geschlossene Nut (1) angelegt ist, die mit einer zusätzlichen Nut (7) die Durchführung(en) des (der) Schiebers (6) umschließt und mit der Vakuum-Leitung (2) in Verbindung steht. Claims: 1. Die casting mold, which has a vacuum control is evacuated, the mold interior and the parting plane of the two mold halves are in connection with a vacuum system, characterized in that for suction of gases in the parting line of the two mold halves (3, 4) outside the mold engraving (5) a circumferential, self-contained groove (1) is created with an additional Groove (7) encloses the passage (s) of the slide (6) and with the vacuum line (2) communicates.

2. Druckgießform nach Anspruch 1, dadurch gekennzeichnet, daß der Vakuum-Anschluß für die Nut (1) über ein gesondertes Vakuum-Ventil gesteuert wird. 2. Die casting mold according to claim 1, characterized in that the Vacuum connection for the groove (1) is controlled via a separate vacuum valve.

Die Erfindung betrifft eine Druckgießform, welche über eine Vakuum-Steuerung evakuiert wird Beim Druckgießen muß während der Füllphase die Luft aus der Form entweichen können, bzw. über Vakuum entzogen werden. The invention relates to a die casting mold which has a vacuum control During the filling phase, the air has to be evacuated can escape or be removed via vacuum.

Durch die Anordnung von Luftbohnen und Entlüftungsschlitzen kann die Luft ohne Vakuum teilweise aus der Formgravur entweichen. Ein Restanteil bleibt jedoch in der Druckgießform und wird in das Gußteil eingeschlossen. Durch Evakuieren der Druckgießform kann der Restanteil der Luft weitestgehend entzogen werden. Das bedeutet jedoch, daß die Druckgießform in der Trennebene und, falls Schieber vorhanden, auch die ganze Schieberkontur abgedichtet werden muß, so daß beim Evakuieren keine Falschluft von Außen in die Form kommt. Die Abdichtung wird z. Zt mittels einer hitzebeständigen Dichtung ausgeführt. Bei komplizierten Formen mit Schiebern wird der Einbau einer solchen Dichtung problematisch und ist einem sehr starken Verschleiß unterworfen. The arrangement of air beans and vents allows the air can partially escape from the engraving without a vacuum. A remainder remains however, in the die and is included in the casting. By evacuating Most of the remaining air can be withdrawn from the die-casting mold. That means, however, that the die in the parting line and, if there is a slide, the entire slide contour must also be sealed so that no False air comes into the mold from the outside. The seal is z. Currently using a executed heat-resistant seal. For complicated shapes with sliders the installation of such a seal is problematic and is subject to very severe wear subject.

Hier setzt nun die vorliegende Erfindung ein und hat sich zur Aufgabe gestellt, die vorstehend aufgeführten Probleme in möglichst einfacher Art zu lösen. This is where the present invention comes in and has as its object posed to solve the problems listed above in the simplest possible way.

Zu diesem Zweck wird erfindungsgemäß bei einer Druckgießform der eingangs beschriebenen Ausführung vorgeschlagen, daß an der Trennebene der beiden Formhälften außerhalb der Formgravur eine Nut angelegt ist, die mit der Vakuum-Leitung in Verbindung steht. Weiterhin ist eine zusätzliche Nut rings um den oder die Schieber angeordnet, die mit der ersten Nut in Verbindung steht. For this purpose, according to the invention, in a die casting mold Proposed embodiment described above that at the parting line of the two Mold halves outside of the mold a groove is created, which connects to the vacuum line communicates. There is also an additional groove around the slide or slide arranged, which is in communication with the first groove.

Wenn die erfindungsgemäß ausgebildete Druckgießform geschlossen wird, wirkt das Vakuum in der Formgravur und in der Ringnut außerhalb der Formgravur. When the die-casting mold designed according to the invention is closed, the vacuum acts in the shape engraving and in the ring groove outside the shape engraving.

Dadurch wird mit Sicherheit verhindert, daß Falschluft von außen in die Formgravur eindringen kann.This is sure to prevent false air from entering from the outside the shape engraving can penetrate.

Das Vakuum bleibt außerdem anstehen, auch wenn das Vakuum-Ventil an der Form bereits geschlossen ist. The vacuum also remains when the vacuum valve is activated on the mold is already closed.

Eventuell erforderliche Entlüftungsschlitze aus der Formgravur können örtlich eingebracht und die Form somit zusätzlich über die normale Vakuumzeit hinaus evakuiert werden. Any ventilation slots that may be required can be found in the shape engraving locally introduced and the shape thus also beyond the normal vacuum time to be evacuated.

Erfindungsgemäß ist somit keine Dichtschnur mehr erforderlich und auch komplizierte Formgravuren können in einfachster Art abgedichtet werden. According to the invention, a sealing cord is no longer required and Even complicated shape engravings can be sealed in the simplest way.

Die Erfindung wird an Hand einer Zeichnung, die ein beliebiges Ausführungsbeispiel darstellt, näher erläutert In der Zeichnung ist die Form geschlossen dargestellt, wobei ein Teil der festen Aufspannplatte und Formhälfte ausgeschnitten dargestellt sind. Die beiden Formhälften sind mit 3 und 4 bezeichnet. Über ein Magnetventil und Leitung 2 wird das Vakuum an die Form angelegt. The invention is based on a drawing showing any exemplary embodiment represents, explained in more detail In the drawing, the shape is shown closed, with part of the fixed platen and mold half shown cut out are. The two mold halves are labeled 3 and 4. Via a solenoid valve and line 2, the vacuum is applied to the mold.

Claims (1)

Um die Formgravur 5 herum ist eine Nut 1 gelegt, die ebenfalls an die Vakuum-Leitung 2 angeschlossen ist und somit bei geschlossener Form verhindert, daß von außen Falschluft in die Form eingezogen wird. Weiterhin ist, wie in der Zeichnung durch den Schieber 6 angedeutet, rings um den Schieber 6 herum eine zusätzliche Nut 7 vorgesehen, die an die Nut 1 angeschlossen ist.A groove 1 is placed around the engraved shape 5, which is also on the vacuum line 2 is connected and thus prevents when the mold is closed, that false air is drawn into the mold from the outside. Furthermore, as in the Drawing indicated by the slide 6, an additional one around the slide 6 Groove 7 is provided, which is connected to groove 1.
DE19853502269 1985-01-24 1985-01-24 Die-casting die which is evacuated by way of a vacuum control Expired DE3502269C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853502269 DE3502269C1 (en) 1985-01-24 1985-01-24 Die-casting die which is evacuated by way of a vacuum control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853502269 DE3502269C1 (en) 1985-01-24 1985-01-24 Die-casting die which is evacuated by way of a vacuum control

Publications (1)

Publication Number Publication Date
DE3502269C1 true DE3502269C1 (en) 1985-12-12

Family

ID=6260621

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853502269 Expired DE3502269C1 (en) 1985-01-24 1985-01-24 Die-casting die which is evacuated by way of a vacuum control

Country Status (1)

Country Link
DE (1) DE3502269C1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824574A1 (en) * 1988-07-19 1990-01-25 Michael Haeusle Method for casting precision castings
DE19500005A1 (en) * 1995-01-01 1996-07-04 Seefeldt Rudolf Device with gaps acting for forced deaeration of casting dies
EP0888839A1 (en) * 1996-11-14 1999-01-07 Sugitani Kinzoku Kogyo Kabushiki Kaisha Method of manufacturing casting and apparatus therefor
EP0985473A1 (en) * 1998-09-09 2000-03-15 Alusuisse Bayrisches Druckguss-Werk GmbH &amp; Co. KG Pressure diecasting machine and process for making die castings
DE19850499C1 (en) * 1998-11-02 2000-04-13 Friedrich Wieser Production of molded parts made of liquid hardenable material, especially aluminum, comprises applying a subpressure to the outside of the hollow space in the feed chamber
DE10207028B4 (en) * 2001-02-20 2008-07-24 Toshiba Kikai K.K. injection molding machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002886A1 (en) 1980-01-28 1981-07-30 Bayrisches Druckguß-Werk Thurner KG, 8015 Markt Schwaben DIE CASTING MACHINE AND METHOD FOR OPERATING THE SAME

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002886A1 (en) 1980-01-28 1981-07-30 Bayrisches Druckguß-Werk Thurner KG, 8015 Markt Schwaben DIE CASTING MACHINE AND METHOD FOR OPERATING THE SAME

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE 30 02 886 A1 *
DE-B.: Brunnhuber, E. "Moderne Druckgußfertigung" 1971, S. 54,55 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824574A1 (en) * 1988-07-19 1990-01-25 Michael Haeusle Method for casting precision castings
DE19500005A1 (en) * 1995-01-01 1996-07-04 Seefeldt Rudolf Device with gaps acting for forced deaeration of casting dies
EP0888839A1 (en) * 1996-11-14 1999-01-07 Sugitani Kinzoku Kogyo Kabushiki Kaisha Method of manufacturing casting and apparatus therefor
EP0888839A4 (en) * 1996-11-14 1999-02-17
EP0985473A1 (en) * 1998-09-09 2000-03-15 Alusuisse Bayrisches Druckguss-Werk GmbH &amp; Co. KG Pressure diecasting machine and process for making die castings
DE19841229A1 (en) * 1998-09-09 2000-03-16 Alusuisse Bayrisches Druckgus Die casting machine for light metal casting in an evacuated form
DE19850499C1 (en) * 1998-11-02 2000-04-13 Friedrich Wieser Production of molded parts made of liquid hardenable material, especially aluminum, comprises applying a subpressure to the outside of the hollow space in the feed chamber
DE10207028B4 (en) * 2001-02-20 2008-07-24 Toshiba Kikai K.K. injection molding machine

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D1 Grant (no unexamined application published) patent law 81
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