EP1129801A1 - Centrifugal casting mould and process for releasing front cover of central casting mould - Google Patents

Centrifugal casting mould and process for releasing front cover of central casting mould Download PDF

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Publication number
EP1129801A1
EP1129801A1 EP01103291A EP01103291A EP1129801A1 EP 1129801 A1 EP1129801 A1 EP 1129801A1 EP 01103291 A EP01103291 A EP 01103291A EP 01103291 A EP01103291 A EP 01103291A EP 1129801 A1 EP1129801 A1 EP 1129801A1
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EP
European Patent Office
Prior art keywords
centrifugal
casting mold
centrifugal casting
housing
centrifugal weight
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Granted
Application number
EP01103291A
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German (de)
French (fr)
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EP1129801B1 (en
Inventor
Joseph Paul Schmitz
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Deere and Co
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Deere and Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101—Moulds
    • B22D13/104—Cores

Definitions

  • the invention relates to a centrifugal casting mold with a housing as well as an insert which can be arranged in the housing and a End attachment, the end attachment at least two pivotable Has centrifugal weight elements, which based on the Centrifugal casting mold are arranged radially inside, as well as a Method for detaching an end cap from a Centrifugal casting mold.
  • Known rotary or centrifugal casting molds often have hollow, cylindrical housing in which a hollow, cylindrical insert is arranged. Such an application must be made in held in the housing and against an annular shoulder in the Housing pressed.
  • end covers on an end portion of the housing appropriate.
  • One type of end cover has one Locking ring with outer, ramp-shaped flanks and one outer cover, which on the end portion of the housing is screwed on.
  • the outer cover has one Cam surface that interacts with the ramps to move the locking ring axially inward to the Use to jam in place when the Locking ring is rotated.
  • To move the ring is one manually operated assembly wheel unit (for small molds) or a hydraulically operated driving ratchet mechanism (for large molds) required.
  • the Locking ring to be able to withstand high temperatures endure.
  • Another type of end attachment such as that of the JP 57127565, it has centrifugal weights that which secure the end attachment to the centrifugal casting mold. If the Centrifugal casting mold is rotated, the pivot Centrifugal weights and engage in recesses on the inside of the Centrifugal mold.
  • centrifugal casting molds do not work optimally or are complex to carry out or assemble.
  • centrifugal casting mold with an end cap provided that is not forcibly assembled or must be dismantled, the higher temperatures withstands and the handling or usability of the Centrifugal casting mold not hindered.
  • the end cap can be an add-on element that fits with the housing is connectable, and have a centrifugal weight carrier to which the flyweights are attached directly or indirectly. This simplifies both the manufacture and the attachment or removing the end cap.
  • the add-on element can accommodate the flyweight carrier, which comes into contact with an end area of the insert and on the the centrifugal weight elements are pivotally attached.
  • the Centrifugal weight elements can attack the housing. Simple in production, however, it is when on the attachment or several investment areas are provided.
  • the investment area is preferably designed as a contact surface, which in essentially radially inwards towards the shoulder is directed.
  • the attachment can be directly or indirectly on the housing apply and have an investment area so that preferably no other components between the housing and the attachment must be provided.
  • Add-on element also in its investment area Contact surface that is at least essentially radial and extending axially towards the end region improves this the possibility of intervention of the investment area of the Centrifugal weight element.
  • the contact surface is at least substantially frustoconical. In addition, this favors the intrusion or attack of the Centrifugal weight elements, since it prevents counter-jamming.
  • flyweight elements counter to their caused by the rotation of the centrifugal mold Movement are loaded so that when the Centrifugal casting mold not rotating, in a neutral position or a position in which they do not engage the attachment, are held or brought. If not, and are the flyweight elements simply by Rotation of the centrifugal casting mold is provided pivotally or there is the possibility that despite the (spring) load, the Flyweight elements cannot disengage, so be provided that preferably each flyweight element has an area on which a tool acts in this way can that the centrifugal weight element is disengaged or can be pivoted.
  • an inner or an on each centrifugal weight element outer arm may be provided, the inner arm preferably can interact with the contact area of the attachment element and the outer arm is designed so that the tool on it can attack.
  • the tool has one at least essentially cylindrical body with a plurality of outwards outstanding projections, so this can be done with the Areas or outer arms of the flyweight elements cooperate that these pivot when the tool is rotated.
  • FIGS. 1 and 2 in which a Centrifugal casting mold 10 is shown, which is a hollow, cylindrical has outer housing 12 which has an inner, annular, forms shoulder 14 facing the axis.
  • a hollow, cylindrical insert 16 is inserted into the housing 12.
  • the Insert has a main body 18 with a larger one Diameter and a neck 20 with a smaller Diameter on.
  • An end cap 22 has a hollow, cylindrical flyweight carrier 24 or an inner ring which is a plurality (preferably three) of flyweight elements 26 are attached, and a ring or an add-on element 28 on.
  • the attachment element 28 has an inner end region 29, which rests on the housing 12 when the add-on element 28 is on an end portion of the housing 12 by a plurality of Screws (not shown) is attached, which itself axially extending screw recesses 32.
  • the Add-on element 28 receives the flyweight carrier 24, and the The flyweight carrier 24 engages an end region of the insert 16 on.
  • the attachment element 28 has a hollow, cylindrical one Body 34 which has an annular flyweight element abutment surface or forms a contact surface 36. Like it can be seen upright in Fig.
  • the contact surface 36th frusto-conical, essentially radially inwards and axially towards the inner end region 29 and towards the shoulder 14 facing, and extends radially from an outer edge 38 inward and axially away from shoulder 14 to an inner one Edge 40.
  • the flyweight carrier 24 has a plurality (preferably three) cut out areas or slots 42, of which each receives a corresponding flyweight element 26.
  • Each The centrifugal weight element 26 is based on the add-on element 28 arranged radially inside and has a main body 44 a mounting hole 46 at its axial outer end portion 48 on.
  • Each centrifugal weight element 26 is pivotable on one Pin 43 arranged, which extends through the mounting opening 46th extends and which through pin holders 45 and 47 opposite sides of the flyweight element 26 is appropriate.
  • Each flyweight element 26 has an arm 50 on which is essentially an axially inner End portion 52 of the main body 44 extends radially outward.
  • a ring contact surface or contact area 54 is on the arm 50 provided to engage the contact surface 36. Like it can be seen upright in Fig. 2 is the investment area 54 substantially radially outward and from the shoulder 14 turned away.
  • the flyweight carrier 24 should be on the Hit the end portion of the insert 16 to an input tube to form the center of the centrifugal mold 10, so that no liquid metal can drip into a loose seam and settle there builds up over time.
  • the inner end of the The flyweight carrier 24 should have the attachment 20 of the insert 16 loosely enclose (not necessarily completely) the Maintain alignment of the end cap 22.
  • This end attachment 22 does not have to be driven in hydraulically and removed and it can withstand high temperatures.
  • the centrifugal weight elements 26 are not radially from the centrifugal mold 10 and therefore do not hinder the Movement of the centrifugal mold 10 and do not prevent the Use of the centrifugal casting mold 10 in a mold magazine.
  • each centrifugal weight element 70 is attached to a tool 76 engaging area and each flyweight element 70 cooperates with tool 76 to disengage from the Attachment 28 to get when the tool in the direction of Insert 16 is moved.
  • each has The centrifugal weight element 70 has an outer arm 72 which extends extends substantially axially away from its inner arm 74.
  • An attachment and removal tool 76 has a hollow, tapered, cylindrical base body 78, which a frustoconical surface 80 forms which on the End areas of the arms 72 attacks. If the tool 76 in The arms 72 are moved in the direction of the end cap 22 forced radially outward, causing the inner arms 74 to be radial swivel inwards. This causes the Centrifugal weight elements 70 out of engagement with add-on element 28 brought, and allows the flyweight carrier 24 and the centrifugal weight elements 70 are pulled out axially or into the Centrifugal mold 10 to be used.
  • each flyweight element 90 has a Has arm 92 for engaging a tool 94 and each The centrifugal weight element 90 cooperates with the tool 94 in order to to pivot out of engagement with the attachment member 28 when tool 94 is rotated about its central axis.
  • the Tool 94 has a hollow, cylindrical base body 96 with a plurality of stops 98, which differ from this Extend radially. When the tool 94 is rotated attack the stops 98 on the arms 92 and force them radially apart, causing the inner part of the Centrifugal weight elements 90 swings radially inwards. This causes the flyweight member 90 to disengage from the Attachment 28 is brought and allows it Centrifugal weight carrier 24 and the centrifugal weight elements 90 axially pulled out or inserted into the centrifugal mold 10 become.
  • the inner end regions of the centrifugal weight elements 26, 70, 90 radially outwards when the centrifugal mold 10 is rotated.
  • the Centrifugal weight elements 26, 70, 90 work with the contact surfaces 36 of the attachment 28 together to cause the
  • the centrifugal weight carrier 24 extends axially in the direction of the insert 16 move while pressing the insert 16 against the shoulder 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Dental Prosthetics (AREA)
  • Pens And Brushes (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Centrifugal casting mold (10) comprises a housing (12) with an insert (16), and an end piece (22) having two tilting weights (26) radially arranged on the mold. The weights interact with the end piece in such a way that it secures the insert in the housing when the mold is rotated without coming into contact with the insert. An Independent claim is also included for a process for detaching an end piece from a centrifugal casting mold, comprising interacting a tool having a cylindrical base body with the region in such a way that the weights are tilted by inserting and/or rotating the tool. Preferred Features: The mold has an additional element (28) connected to the housing and a weight support (24) (in)directly connected to the weights.

Description

Die Erfindung betrifft eine Schleudergußform mit einem Gehäuse sowie einem in dem Gehäuse anordenbaren Einsatz und einem Endaufsatz, wobei der Endaufsatz zumindest zwei verschwenkbare Fliehgewichtelemente aufweist, welche bezogen auf die Schleudergußform radial innenliegend angeordnet sind, sowie ein Verfahren zum Lösen eines Endaufsatzes von einer Schleudergußform.The invention relates to a centrifugal casting mold with a housing as well as an insert which can be arranged in the housing and a End attachment, the end attachment at least two pivotable Has centrifugal weight elements, which based on the Centrifugal casting mold are arranged radially inside, as well as a Method for detaching an end cap from a Centrifugal casting mold.

Bekannte Rotations- bzw. Schleudergußformen weisen häufig ein hohles, zylindrisches Gehäuse auf, in welchem ein hohler, zylindrischer Einsatz angeordnet ist. Solch ein Einsatz muß in dem Gehäuse gehalten und gegen eine ringförmige Schulter in dem Gehäuse gedrückt werden. Um den Einsatz gegen die Schulter zu pressen, werden Endabdeckungen an einem Endbereich des Gehäuses angebracht. Ein Typ von Endabdeckung weist einen Verriegelungsring mit äußeren, rampenförmigen Flanken und einer äußeren Abdeckung auf, welche auf den Endbereich des Gehäuses aufgeschraubt ist. Die äußere Abdeckung weist eine Nockenoberfläche auf, welche mit den Rampen zusammenwirkt, um den Verriegelungsring axial nach innen zu bewegen, um den Einsatz an seinem Platz zu verklemmen, wenn der Verriegelungsring gedreht wird. Um den Ring zu bewegen ist eine manuell betätigte Montageradeinheit (für kleine Gußformen) oder eine hydraulisch betätigter Eintreib-Ratschenmechanismus (für große Gußformen) erforderlich. Darüber hinaus muß der Verriegelungsring in der Lage sein, hohe Temperaturen auszuhalten.Known rotary or centrifugal casting molds often have hollow, cylindrical housing in which a hollow, cylindrical insert is arranged. Such an application must be made in held in the housing and against an annular shoulder in the Housing pressed. To use against the shoulder too press, end covers on an end portion of the housing appropriate. One type of end cover has one Locking ring with outer, ramp-shaped flanks and one outer cover, which on the end portion of the housing is screwed on. The outer cover has one Cam surface that interacts with the ramps to move the locking ring axially inward to the Use to jam in place when the Locking ring is rotated. To move the ring is one manually operated assembly wheel unit (for small molds) or a hydraulically operated driving ratchet mechanism (for large molds) required. In addition, the Locking ring to be able to withstand high temperatures endure.

Ein weiterer Typ von Endaufsatz, wie er beispielsweise der JP 57127565 entnommen werden kann, weist Fliehgewichte auf, die die den Endaufsatz an der Schleudergußform sichern. Wenn die Schleudergußform in Rotation versetzt wird, verschwenken die Fliehgewichte und greifen in Vertiefungen an der Innenseite der Schleudergußform an.Another type of end attachment, such as that of the JP 57127565, it has centrifugal weights that which secure the end attachment to the centrifugal casting mold. If the Centrifugal casting mold is rotated, the pivot Centrifugal weights and engage in recesses on the inside of the Centrifugal mold.

Das der Erfindung zugrunde liegende Problem wird darin gesehen, daß bekannte Schleudergußformen nicht optimal arbeiten bzw. aufwendig in der Ausführung bzw. Montage sind.The problem underlying the invention is seen in that known centrifugal casting molds do not work optimally or are complex to carry out or assemble.

Dieses Problem wird erfindungsgemäß durch die Lehre der Patentansprüche 1 bzw. 8 gelöst, wobei in den weiteren Patentansprüchen die Lösung in vorteilhafter Weise weiterentwickelnde Merkmale aufgeführt sind.This problem is solved according to the invention by the teaching of the claims 1 and 8 solved, wherein in the further claims Advantageously developing the solution Features are listed.

Auf diese Weise wird eine Schleudergußform mit einem Endaufsatz zur Verfügung gestellt, der nicht gewaltsam montiert bzw. demontiert werden muß, der darüber hinaus höheren Temperaturen standhält und die Handhab- bzw. Einsetzbarkeit der Schleudergußform nicht behindert. Hierzu weist die Schleudergußform ein Gehäuse, einen Einsatz und einen Endaufsatz auf, welcher den Einsatz in Richtung des Gehäuses belastet, so daß er vorzugsweise an einer in bzw. an dem Gehäuse vorgesehenen Schulter anliegt. Hierzu weist der Endaufsatz Fliehgewichte auf, die verschwenken, wenn die Schleudergußform in Rotation versetzt wird, und derart mit dem Gehäuse zusammenwirken, daß sie den Endaufsatz und mit diesem den Einsatz belasten.In this way, a centrifugal casting mold with an end cap provided that is not forcibly assembled or must be dismantled, the higher temperatures withstands and the handling or usability of the Centrifugal casting mold not hindered. The Centrifugal casting mold, a housing, an insert and one End cap on which the insert towards the housing loaded, so that it is preferably at one in or on the Housing provided shoulder rests. The On the centrifugal weights that pivot when the Centrifugal casting mold is rotated, and so with the Housing cooperate that they are the end cap and with this burden the insert.

Der Endaufsatz kann ein Anbauelement, das mit dem Gehäuse verbindbar ist, sowie einen Fliehgewichtträger aufweisen, an dem die Fliehgewichte direkt oder indirekt angebracht sind. Dies vereinfacht sowohl die Herstellung als auch das Anbringen bzw. Abnehmen des Endaufsatzes.The end cap can be an add-on element that fits with the housing is connectable, and have a centrifugal weight carrier to which the flyweights are attached directly or indirectly. This simplifies both the manufacture and the attachment or removing the end cap.

Das Anbauelement kann den Fliehgewichtträger aufnehmen, welcher an einem Endbereich des Einsatzes zur Anlage kommt und an dem die Fliehgewichtelemente schwenkbar angebracht sind. Die Fliehgewichtelemente können an dem Gehäuse angreifen. Einfach in der Herstellung ist es aber, wenn an dem Anbauelement ein oder mehrere Anlagebereiche vorgesehen sind. Der Anlagebereich ist vorzugsweise als eine Anlagefläche ausgebildet, welche im wesentlichen radial nach innen in Richtung der Schulter gerichtet ist. Wenn die Schleudergußform gedreht wird, wirken die Fliehgewichtelemente derart mit dem Anlagebereich bzw. den Anlageflächen zusammen, daß sie den Endaufsatz in Richtung des Einsatzes drängen, wodurch dieser in Richtung der Schulter belastet wird.The add-on element can accommodate the flyweight carrier, which comes into contact with an end area of the insert and on the the centrifugal weight elements are pivotally attached. The Centrifugal weight elements can attack the housing. Simple in production, however, it is when on the attachment or several investment areas are provided. The investment area is preferably designed as a contact surface, which in essentially radially inwards towards the shoulder is directed. When the centrifugal casting mold is turned, act the centrifugal weight elements with the contact area or the Contact surfaces together that they the end cap in the direction of Pushing, causing this towards the shoulder is charged.

Das Anbauelement kann direkt oder indirekt an dem Gehäuse anliegen und hierzu einen Anlagebereich aufweisen, so daß vorzugsweise keine weiteren Bauteile zwischen dem Gehäuse und dem Anbauelement vorgesehen werden müssen. Weist das Anbauelement darüber hinaus in seinem Anlagebereich eine Anlagefläche auf, die sich zumindest im wesentlichen radial und axial in Richtung des Endbereichs erstreckt, verbessert dies die Eingriffsmöglichkeit des Anlagebereichs des Fliehgewichtelements.The attachment can be directly or indirectly on the housing apply and have an investment area so that preferably no other components between the housing and the attachment must be provided. Know that Add-on element also in its investment area Contact surface that is at least essentially radial and extending axially towards the end region improves this the possibility of intervention of the investment area of the Centrifugal weight element.

Einfach in der Herstellung ist es, wenn die Anlagefläche zumindest im wesentlichen kegelstumpfförmig ausgebildet ist. Darüber hinaus begünstigt dies den Ein- bzw. Angriff der Fliehgewichtelemente, da einem Verhaken entgegengewirkt wird.It is easy to manufacture if the contact surface is at least substantially frustoconical. In addition, this favors the intrusion or attack of the Centrifugal weight elements, since it prevents counter-jamming.

Es ist denkbar, daß die Fliehgewichtelemente entgegen ihrer durch die Rotation der Schleudergußform hervorgerufenen Bewegung (feder-)belastet sind, so daß sie, wenn die Schleudergußform nicht rotiert, in einer Neutralstellung bzw. einer Stellung, in der sie nicht an dem Anbauelement angreifen, gehalten bzw. gebracht werden. Ist dies nicht der Fall und sind die Fliehgewichtelemente in einfacher Weise nur durch die Rotation der Schleudergußform schwenkbar vorgesehen oder besteht, die Möglichkeit, daß trotz der (Feder-)Belastung, die Fliehgewichtelemente nicht außer Eingriff gelangen, so kann vorgesehen sein, daß vorzugsweise jedes Fliehgewichtelement einen Bereich aufweist, an dem ein Werkzeug derart angreifen kann, daß das Fliehgewichtelement außer Eingriff gebracht bzw. verschwenkt werden kann.It is conceivable that the flyweight elements counter to their caused by the rotation of the centrifugal mold Movement (spring) are loaded so that when the Centrifugal casting mold not rotating, in a neutral position or a position in which they do not engage the attachment, are held or brought. If not, and are the flyweight elements simply by Rotation of the centrifugal casting mold is provided pivotally or there is the possibility that despite the (spring) load, the Flyweight elements cannot disengage, so be provided that preferably each flyweight element has an area on which a tool acts in this way can that the centrifugal weight element is disengaged or can be pivoted.

Hierzu kann an jedem Fliehgewichtelement ein innerer bzw. ein äußerer Arm vorgesehen sein, wobei der innere Arm vorzugsweise mit dem Anlagebereich des Anbauelements zusammenwirken kann und der äußere Arm derart ausgebildet ist, daß das Werkzeug an ihm angreifen kann.For this purpose, an inner or an on each centrifugal weight element outer arm may be provided, the inner arm preferably can interact with the contact area of the attachment element and the outer arm is designed so that the tool on it can attack.

Weist das Werkzeug einen zumindest im wesentlichen zylindrischen Grundkörper mit einer Mehrzahl von nach außen hervorragenden Vorsprüngen auf, so kann dieser derart mit den Bereichen bzw. äußeren Armen der Fliehgewichtelemente zusammenwirken, daß diese verschwenken, wenn das Werkzeug gedreht wird.The tool has one at least essentially cylindrical body with a plurality of outwards outstanding projections, so this can be done with the Areas or outer arms of the flyweight elements cooperate that these pivot when the tool is rotated.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
eine Ansicht eines Endbereichs eines Endaufsatzes für eine Schleudergußform,
Fig. 2
einen Schnitt entlang der Linie 2 - 2 aus Fig. 1 in Richtung der Pfeile,
Fig. 3
eine teilweise Darstellung einer alternativen Ausführungsform eines Endaufsatzes zusammen mit einem Einsetz- bzw. Entnahme-Werkzeug,
Fig. 4
eine teilweise Darstellung entsprechend Fig. 3 einer weiteren alternativen Ausführungsform eines Endaufsatzes und
Fig. 5
eine Frontansicht eines Einsetz- bzw. Entnahme-Werkzeugs entsprechend Fig. 4.
In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a view of an end portion of an end cap for a centrifugal casting mold,
Fig. 2
2 shows a section along the line 2-2 from FIG. 1 in the direction of the arrows,
Fig. 3
FIG. 2 shows a partial illustration of an alternative embodiment of an end cap together with an insertion or removal tool,
Fig. 4
a partial representation corresponding to FIG. 3 of a further alternative embodiment of an end cap and
Fig. 5
4 shows a front view of an insertion or removal tool corresponding to FIG. 4.

Es wird auf die Figuren 1 und 2 Bezug genommen, in denen eine Schleudergußform 10 gezeigt wird, die ein hohles, zylindrisches äußeres Gehäuse 12 aufweist, welches eine innere, ringförmige, zur Achse hin gewandte Schulter 14 bildet. Ein hohler, zylindrischer Einsatz 16 ist in das Gehäuse 12 eingesetzt. Der Einsatz weist einen Hauptkörper 18 mit einem größeren Durchmesser und einen Ansatz 20 mit einem geringeren Durchmesser auf. Ein Endaufsatz 22 weist einen hohlen, zylindrischen Fliehgewichtträger 24 bzw. einen inneren Ring, an welchem eine Mehrzahl (vorzugsweise drei), Fliehgewichtelemente 26 angebracht sind, und einen Ring bzw. ein Anbauelement 28 auf. Das Anbauelement 28 weist einen inneren Endbereich 29 auf, welcher an dem Gehäuse 12 anliegt, wenn das Anbauelement 28 an einem Endbereich des Gehäuses 12 durch eine Mehrzahl von Schrauben (nicht gezeigt) befestigt ist, welche sich durch sich axial erstreckende Schraubenaussparungen 32 erstrecken. Das Anbauelement 28 nimmt den Fliehgewichtträger 24 auf, und der Fliehgewichtträger 24 greift an einem Endbereich des Einsatzes 16 an. Das Anbauelement 28 weist einen hohlen, zylindrischen Körper 34 auf, welcher eine ringförmige Fliehgewichtelementanlagefläche bzw. eine Anlagefläche 36 bildet. Wie es hochkant in Fig. 2 ersehen werden kann, ist die Anlagefläche 36 kegelstumpfförmig, im wesentlichen radial nach innen und axial in Richtung des inneren Endbereichs 29 und zu der Schulter 14 gewandt, und erstreckt sich von einer äußeren Kante 38 radial nach innen und axial weg von der Schulter 14 zu einer inneren Kante 40.Reference is made to FIGS. 1 and 2, in which a Centrifugal casting mold 10 is shown, which is a hollow, cylindrical has outer housing 12 which has an inner, annular, forms shoulder 14 facing the axis. A hollow, cylindrical insert 16 is inserted into the housing 12. The Insert has a main body 18 with a larger one Diameter and a neck 20 with a smaller Diameter on. An end cap 22 has a hollow, cylindrical flyweight carrier 24 or an inner ring which is a plurality (preferably three) of flyweight elements 26 are attached, and a ring or an add-on element 28 on. The attachment element 28 has an inner end region 29, which rests on the housing 12 when the add-on element 28 is on an end portion of the housing 12 by a plurality of Screws (not shown) is attached, which itself axially extending screw recesses 32. The Add-on element 28 receives the flyweight carrier 24, and the The flyweight carrier 24 engages an end region of the insert 16 on. The attachment element 28 has a hollow, cylindrical one Body 34 which has an annular flyweight element abutment surface or forms a contact surface 36. Like it can be seen upright in Fig. 2, the contact surface 36th frusto-conical, essentially radially inwards and axially towards the inner end region 29 and towards the shoulder 14 facing, and extends radially from an outer edge 38 inward and axially away from shoulder 14 to an inner one Edge 40.

Der Fliehgewichtträger 24 weist eine Mehrzahl (vorzugsweise drei) ausgeschnittener Bereiche oder Schlitze 42 auf, von denen jeder ein entsprechendes Fliehgewichtelement 26 aufnimmt. Jedes Fliehgewichtelement 26 ist bezogen auf das Anbauelement 28 radial innen angeordnet und weist einen Hauptkörper 44 mit einer Anbauöffnung 46 an seinem axialen äußeren Endbereich 48 auf. Jedes Fliehgewichtelement 26 ist schwenkbar auf einem Stift 43 angeordnet, welcher sich durch die Anbauöffnung 46 erstreckt und welcher durch Stifthalterungen 45 und 47 an gegenüberliegenden Seiten des Fliehgewichtelements 26 angebracht ist. Jedes Fliehgewichtelement 26 weist einen Arm 50 auf, welcher sich im wesentlichen von einem axial inneren Endbereich 52 des Hauptkörpers 44 radial nach außen erstreckt. Eine Ringanlagefläche bzw. ein Anlagebereich 54 ist an dem Arm 50 vorgesehen, um an der Anlagefläche 36 anzugreifen. Wie es hochkant in Fig. 2 ersehen werden kann, ist der Anlagebereich 54 im wesentlichen radial nach außen und von der Schulter 14 weggewandt.The flyweight carrier 24 has a plurality (preferably three) cut out areas or slots 42, of which each receives a corresponding flyweight element 26. Each The centrifugal weight element 26 is based on the add-on element 28 arranged radially inside and has a main body 44 a mounting hole 46 at its axial outer end portion 48 on. Each centrifugal weight element 26 is pivotable on one Pin 43 arranged, which extends through the mounting opening 46th extends and which through pin holders 45 and 47 opposite sides of the flyweight element 26 is appropriate. Each flyweight element 26 has an arm 50 on which is essentially an axially inner End portion 52 of the main body 44 extends radially outward. A ring contact surface or contact area 54 is on the arm 50 provided to engage the contact surface 36. Like it can be seen upright in Fig. 2 is the investment area 54 substantially radially outward and from the shoulder 14 turned away.

Vorzugsweise sollte der Fliehgewichtträger 24 auf den Endbereich des Einsatzes 16 treffen, um eine Eingangsröhre zu dem Zentrum der Schleudergußform 10 zu bilden, so daß kein flüssiges Metall in eine lose Naht tropfen kann und sich dort im Laufe der Zeit aufbaut. Der innere Endbereich des Fliehgewichtträgers 24 sollte den Aufsatz 20 des Einsatzes 16 lose umschließen (nicht notwendigerweise vollständig), um die Ausrichtung des Endaufsatzes 22 aufrechtzuerhalten.Preferably, the flyweight carrier 24 should be on the Hit the end portion of the insert 16 to an input tube to form the center of the centrifugal mold 10, so that no liquid metal can drip into a loose seam and settle there builds up over time. The inner end of the The flyweight carrier 24 should have the attachment 20 of the insert 16 loosely enclose (not necessarily completely) the Maintain alignment of the end cap 22.

Wenn die Schleudergußform 10 gedreht wird, schwenken die Fliehgewichtelemente 26 radial nach außen. Der Anlagebereich 54 greift gleitend an der Anlagefläche 36 an, wodurch die Fliehgewichtelemente 26 und der Fliehgewichtträger 24 sich axial nach innen in Richtung des Einsatzes 16 bewegen und dadurch den Einsatz 16 gegen die Schulter 14 drängen oder halten.When the centrifugal mold 10 is rotated, the pivot Centrifugal weight elements 26 radially outwards. The investment area 54 slidably engages the abutment surface 36, whereby the Flyweight elements 26 and the flyweight carrier 24 themselves move axially inward toward the insert 16 and thereby pushing the insert 16 against the shoulder 14 or hold.

Dieser Endaufsatz 22 muß nicht hydraulisch eingeschlagen und entfernt werden und er kann hohen Temperaturen widerstehen. Außerdem stehen die Fliehgewichtelemente 26 nicht radial von der Schleudergußform 10 ab und behindern daher nicht die Bewegung der Schleudergußform 10 und verhindern nicht die Verwendung der Schleudergußform 10 in einem Formenmagazin.This end attachment 22 does not have to be driven in hydraulically and removed and it can withstand high temperatures. In addition, the centrifugal weight elements 26 are not radially from the centrifugal mold 10 and therefore do not hinder the Movement of the centrifugal mold 10 and do not prevent the Use of the centrifugal casting mold 10 in a mold magazine.

Eine alternative Ausführungsform ist in Fig. 3 dargestellt, in der jedes Fliehgewichtelement 70 einen an einem Werkzeug 76 angreifenden Bereich aufweist und jedes Fliehgewichtelement 70 mit dem Werkzeug 76 zusammenarbeitet, um außer Eingriff mit dem Anbauelement 28 zu gelangen, wenn das Werkzeug in Richtung des Einsatzes 16 bewegt wird. Vorzugsweise weist jedes Fliehgewichtelement 70 einen äußeren Arm 72 auf, welcher sich im wesentlich axial von seinem inneren Arm 74 weg erstreckt. Ein Anbau- und Abbau-Werkzeug 76 weist einen hohlen, zugespitzten, zylindrischen Grundkörper 78 auf, welcher eine kegelstumpfförmige Oberfläche 80 bildet, welche an den Endbereichen der Arme 72 angreift. Wenn das Werkzeug 76 in Richtung des Endaufsatzes 22 bewegt wird, werden die Arme 72 radial nach außen gezwungen, wodurch die inneren Arme 74 radial nach innen verschwenken. Dies bewirkt, daß die Fliehgewichtelemente 70 außer Eingriff von dem Anbauelement 28 gebracht werden, und erlaubt es dem Fliehgewichtträger 24 und den Fliehgewichtelementen 70 axial herausgezogen oder in die Schleudergußform 10 eingesetzt zu werden.An alternative embodiment is shown in FIG. 3, in each centrifugal weight element 70 is attached to a tool 76 engaging area and each flyweight element 70 cooperates with tool 76 to disengage from the Attachment 28 to get when the tool in the direction of Insert 16 is moved. Preferably each has The centrifugal weight element 70 has an outer arm 72 which extends extends substantially axially away from its inner arm 74. An attachment and removal tool 76 has a hollow, tapered, cylindrical base body 78, which a frustoconical surface 80 forms which on the End areas of the arms 72 attacks. If the tool 76 in The arms 72 are moved in the direction of the end cap 22 forced radially outward, causing the inner arms 74 to be radial swivel inwards. This causes the Centrifugal weight elements 70 out of engagement with add-on element 28 brought, and allows the flyweight carrier 24 and the centrifugal weight elements 70 are pulled out axially or into the Centrifugal mold 10 to be used.

Eine weitere alternative Ausführungsform wird in den Figuren 4 und 5 dargestellt, in denen jedes Fliehgewichtelement 90 einen Arm 92 zum Angreifen an einem Werkzeug 94 aufweist und jedes Fliehgewichtelement 90 mit dem Werkzeug 94 zusammenarbeitet, um außer Eingriff mit dem Anbauelement 28 zu verschwenken, wenn das Werkzeug 94 um seine zentrale Achse gedreht wird. Das Werkzeug 94 weist einen hohlen, zylindrischen Grundkörper 96 mit einer Mehrzahl von Anschlägen 98 auf, die sich von diesem radial wegerstrecken. Wenn das Werkzeug 94 gedreht wird, greifen die Anschläge 98 an den Armen 92 an und zwingen diese radial auseinander, wodurch der innere Teil der Fliehgewichtelemente 90 radial nach innen schwenkt. Dies bewirkt, daß das Fliehgewichtelement 90 außer Eingriff von dem Anbauelement 28 gebracht wird und erlaubt es dem Fliehgewichtträger 24 und den Fliehgewichtelementen 90 axial herausgezogen oder in die Schleudergußform 10 eingesetzt zu werden.A further alternative embodiment is shown in FIGS. 4 and FIG. 5, in which each flyweight element 90 has a Has arm 92 for engaging a tool 94 and each The centrifugal weight element 90 cooperates with the tool 94 in order to to pivot out of engagement with the attachment member 28 when tool 94 is rotated about its central axis. The Tool 94 has a hollow, cylindrical base body 96 with a plurality of stops 98, which differ from this Extend radially. When the tool 94 is rotated attack the stops 98 on the arms 92 and force them radially apart, causing the inner part of the Centrifugal weight elements 90 swings radially inwards. This causes the flyweight member 90 to disengage from the Attachment 28 is brought and allows it Centrifugal weight carrier 24 and the centrifugal weight elements 90 axially pulled out or inserted into the centrifugal mold 10 become.

Bei allen oben beschriebenen Ausführungsformen verschwenken die inneren Endbereiche der Fliehgewichtelemente 26, 70, 90 radial nach außen, wenn die Schleudergußform 10 gedreht wird. Die Fliehgewichtelemente 26, 70, 90 arbeiten mit den Anlageflächen 36 des Anbauelements 28 zusammen, um zu bewirken, daß die Fliehgewichtträger 24 sich axial in Richtung des Einsatzes 16 bewegen und dabei den Einsatz 16 gegen die Schulter 14 pressen. In all the embodiments described above, the inner end regions of the centrifugal weight elements 26, 70, 90 radially outwards when the centrifugal mold 10 is rotated. The Centrifugal weight elements 26, 70, 90 work with the contact surfaces 36 of the attachment 28 together to cause the The centrifugal weight carrier 24 extends axially in the direction of the insert 16 move while pressing the insert 16 against the shoulder 14.

Während die vorliegende Erfindung in Verbindung mit einer speziellen Ausführungsform beschrieben wurde, sollte es deutlich sein, daß viele Alternativen, Modifikationen und Variationen für den Fachmann im Lichte der vorstehenden Beschreibung offenkundig sein werden. Entsprechend ist es beabsichtigt, daß die Erfindung alle solchen Alternativen, Modifikationen und Variationen umfassen soll, die in den Geist und den Bereich der folgenden Ansprüche fallen.While the present invention is in connection with a specific embodiment, it should be clear that many alternatives, modifications and Variations for those skilled in the art in light of the above Description will be apparent. It is accordingly intends the invention to provide all such alternatives, Modifications and variations are intended to include that in the mind and fall within the scope of the following claims.

Claims (9)

Schleudergußform (10) mit eine Gehäuse (12) sowie einem in dem Gehäuse (12) anordenbaren Einsatz (16) und einem Endaufsatz (22), wobei der Endaufsatz (22) zumindest zwei verschwenkbare Fliehgewichtelemente (26, 70, 90) aufweist, welche bezogen auf die Schleudergußform (10) radial innen liegend angeordnet sind, dadurch gekennzeichnet, daß die Fliehgewichtelemente (26, 70, 90) derart mit dem Endaufsatz (22) zusammenwirken, daß sie, zumindest wenn die Schleudergußform (10) in Rotation versetzt wird, den Einsatz (16) in dem Gehäuse (12) sichern können, ohne dabei mit dem Einsatz (16) in Kontakt zu treten.Centrifugal casting mold (10) with a housing (12) and an insert (16) which can be arranged in the housing (12) and an end cap (22), the end cap (22) having at least two pivotable centrifugal weight elements (26, 70, 90), which in relation to the centrifugal casting mold (10) are arranged radially on the inside, characterized in that the centrifugal weight elements (26, 70, 90) interact with the end cap (22) in such a way that, at least when the centrifugal casting mold (10) is set in rotation, can secure the insert (16) in the housing (12) without coming into contact with the insert (16). Schleudergußform nach Anspruch 1, dadurch gekennzeichnet, daß die Schleudergußform (10) ein mit dem Gehäuse (12) verbindbares Anbauelement (28) und einen mit den Fliehgewichten (26, 70, 90) direkt bzw. indirekt verbundenen Fliehgewichtträger (24) aufweist.Centrifugal casting mold according to claim 1, characterized in that the centrifugal casting mold (10) has an attachment element (28) which can be connected to the housing (12) and a centrifugal weight carrier (24) which is connected directly or indirectly to the centrifugal weights (26, 70, 90). Schleudergußform nach Anspruch 2, dadurch gekennzeichnet, daß das Anbauelement (28) derart ausgebildet ist, daß es zumindest den Fliehgewichtträger (24) aufnehmen kann und eine Anlagefläche (36) zur Verfügung stellt, an der ein entsprechend ausgebildeter Anlagebereich (54) des Fliehgewichtelements (26, 70, 90), der vorzugsweise an einem von einem Hauptkörper (44) des Fliehgewichtelements (26, 70, 90) abstehenden Arm (50) angeordnet ist, angreifen kann.Centrifugal casting mold according to claim 2, characterized in that the add-on element (28) is designed in such a way that it can at least accommodate the centrifugal weight carrier (24) and provides a contact surface (36) on which a suitably designed contact area (54) of the centrifugal weight element ( 26, 70, 90), which is preferably arranged on an arm (50) projecting from a main body (44) of the centrifugal weight element (26, 70, 90). Schleudergußform nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Anbauelement (28) einen Endbereich (29) zur Anlage an dem Gehäuse (12) aufweist und sich der Anlagebereich (54) zumindest im wesentlichen radial und axial in Richtung dieses Endbereichs (29) erstreckt. Centrifugal casting mold according to claim 2 or 3, characterized in that the attachment element (28) has an end region (29) for abutment against the housing (12) and the abutment region (54) at least essentially radially and axially in the direction of this end region (29) extends. Schleudergußform nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Anlagefläche (36) zumindest im wesentlichen kegelstumpfförmig ausgebildet und radial nach innen gerichtet ist.Centrifugal casting mold according to one of claims 2 to 4, characterized in that the contact surface (36) is at least substantially frustoconical and is directed radially inwards. Schleudergußform nach einem oder mehreren der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß jedes der Fliehgewichtelemente (26, 70, 90) einen Bereich aufweist, an dem ein Werkzeug (76, 94) derart angreifen kann, daß das Fliehgewichtelement (26, 70, 90) außer Eingriff mit dem Anbauelement (28) gebracht bzw. verschwenkt werden kann.Centrifugal casting mold according to one or more of claims 2 to 5, characterized in that each of the centrifugal weight elements (26, 70, 90) has an area on which a tool (76, 94) can engage in such a way that the centrifugal weight element (26, 70, 90) can be brought out of engagement with the attachment element (28) or pivoted. Schleudergußform nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, daß jedes Fliehgewichtelement (26, 70, 90) einen inneren bzw. einen äußeren Arm (72, 74) aufweist, wobei vorzugsweise der äußere Arm (72) mit dem Werkzeug (76, 94) zusammenwirken kann.Centrifugal casting mold according to one or more of the preceding claims, characterized in that each centrifugal weight element (26, 70, 90) has an inner or an outer arm (72, 74), preferably the outer arm (72) with the tool (76, 94) can work together. Verfahren zum Lösen eines Endaufsatzes (22) von einer Schleudergußform (10) nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß ein Werkzeug (76, 94) mit einem zumindest im wesentlichen zylindrischen Grundkörper (78, 96) derart mit dem Bereich zusammenwirkt, daß die Fliehgewichtelemente (26, 70, 90) durch ein Einsetzen bzw. ein Drehen des Werkzeugs (76, 94) verschwenkt werden.Method for detaching an end cap (22) from a centrifugal casting mold (10) according to claim 6 or 7, characterized in that a tool (76, 94) with an at least substantially cylindrical base body (78, 96) interacts with the area in such a way that the centrifugal weight elements (26, 70, 90) are pivoted by inserting or rotating the tool (76, 94). Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß der Grundkörper (78, 96) sich einenends konisch verjüngt bzw. sich radial nach außen erstreckende Vorsprünge aufweist.Method according to claim 8, characterized in that the base body (78, 96) tapers conically at one end or has projections which extend radially outwards.
EP01103291A 2000-02-29 2001-02-13 Centrifugal casting mould and process for releasing front cover of central casting mould Expired - Lifetime EP1129801B1 (en)

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US515636 2000-02-29
US09/515,636 US6595268B1 (en) 2000-02-29 2000-02-29 Spin cast end cap assembly with internal flyweights

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CN102416457B (en) * 2011-12-21 2012-09-05 湖北省缸套厂 Opening and closing mold for manufacturing split cylinder liner blank body
CN107225224B (en) * 2017-06-19 2019-01-01 武汉理工大学 A kind of mould cylinder baffle mechanism and bimetal centrifugal are cast multiple tube production method
CN114346199B (en) * 2022-02-16 2024-09-20 北京博智兴业科技有限公司 Automatic assembling and disassembling device for centrifugal casting pipe end plugs

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ATE305349T1 (en) 2005-10-15
CA2316133A1 (en) 2001-08-29
DE50107532D1 (en) 2005-11-03
JP3425942B2 (en) 2003-07-14
AR027574A1 (en) 2003-04-02
US6595268B1 (en) 2003-07-22

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