EP0312889A2 - Mould for continuous casting - Google Patents

Mould for continuous casting Download PDF

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Publication number
EP0312889A2
EP0312889A2 EP88116855A EP88116855A EP0312889A2 EP 0312889 A2 EP0312889 A2 EP 0312889A2 EP 88116855 A EP88116855 A EP 88116855A EP 88116855 A EP88116855 A EP 88116855A EP 0312889 A2 EP0312889 A2 EP 0312889A2
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EP
European Patent Office
Prior art keywords
clamping
side plate
mold according
broad side
cylinder
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.)
Granted
Application number
EP88116855A
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German (de)
French (fr)
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EP0312889B1 (en
EP0312889A3 (en
Inventor
Karl-Heinz Wyrwas
Waldemar Dipl.-Ing. Radtke
Hermann Dipl.-Ing. Lax
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Thyssen Stahl AG
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Thyssen Stahl AG
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Priority to AT88116855T priority Critical patent/ATE73699T1/en
Publication of EP0312889A2 publication Critical patent/EP0312889A2/en
Publication of EP0312889A3 publication Critical patent/EP0312889A3/en
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Publication of EP0312889B1 publication Critical patent/EP0312889B1/en
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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds

Definitions

  • the invention relates to a mold for continuous casting, consisting of broad side plates, one of which forms a fixed side wall and the other a loose side wall, and adjustable narrow side plates which can be clamped by the broad side plates, and of adjusting cylinders which can be adjusted to a supporting force for the broad side plate forming the loose side wall.
  • Chill molds of this type are known in various designs.
  • both narrow side plates are generally adjustable by means of actuators, in particular hydraulic actuating cylinders, while one of the broad side plates is fixed in a frame in a position predetermined by adjustable support elements, for example adjusting screws, and thus forms a fixed side wall other broad side plate adjustable via actuators, in particular hydraulic actuating cylinders and thus forms a loose side wall.
  • actuators in particular hydraulic actuating cylinders
  • the narrow side plates are clamped non-positively in the desired position between the broad side plates during the casting operation.
  • the advantage of supporting the broad sides on actuating cylinders is that the supporting force can be adjusted. If the supporting force is exceeded by the strand forming in the mold, the broad side can deflect (EP 0 107 564 B1; DE 32 35 673 A1).
  • the pressurization of the actuating cylinder of the broad side plate is of crucial importance, because if the pressure drops, the jamming is lost with the result that the plates give in to the pressure in the mold and migrate.
  • the invention has for its object to provide a mold for continuous casting, in which a safe spring-elastic support of the broad side plate is guaranteed with little design effort.
  • the particular advantages of the mold according to the invention are that the clamping force of the broad side plate is applied by the actuating cylinder, so that there is a resilient support, and that if the pressure acting on the actuating cylinder fails, the clamping force is maintained by the additional support elements which then become effective.
  • a control device with a pressure switch is provided for the lockable support elements, which controls the actuators of the support elements.
  • the support elements are preferably clamping elements guided on rods.
  • the clamping elements can be operated hydraulically and can be designed as clamping cones. For design reasons, it is particularly advantageous if the clamping elements act on the piston rods of the actuating cylinders. In this In each case, an actuating cylinder and a clamping element can form a structural unit.
  • each actuating cylinder is coupled to the broadside plate via a spacing cylinder with a defined travel path such that the clamping force of the broad side plate is relaxed when the spacing cylinder is relieved of pressure is.
  • Narrow side plates 2, 3 and wide side plates 4, 5 are held in a frame 1. While the broad side plate 4 is adjustably supported directly on the frame 1, the broad side plate 5 is supported against the frame 1 by actuating cylinders 8, 9.
  • the narrow side plates 2, 3 can be adjusted to the desired width of the strand to be cast by means of actuators 6, 7 guided in frame 1 and supported thereon. During the casting process, the narrow side plates 2, 3 held by the broad side plates 4.5 by clamping.
  • the broad side plate 4 is fixed in the frame 1 and thus forms a fixed side wall
  • the broad side plate 5 is adjustable by means of the actuating cylinders 8, 9 held in the frame 1 and thus forms a loose side wall.
  • Each of the actuating cylinders 8.9 has the structure shown in FIG. 2.
  • An actuating cylinder 11 and a clamping element 12 in the form of a hydraulically actuated clamping cone are accommodated as a structural unit in a housing 10 fixed in the frame 1.
  • the clamping element 12 is arranged on the piston rod 13 of the actuating cylinder 11 and thus forms a support element for the adjustable broad side plate 5.
  • the free end of the piston rod 13 is coupled to the movable broad side plate 5 via a spacer cylinder 14.
  • Hydraulic pressure can be applied to the actuating cylinder 11 on both sides.
  • the actuating cylinder 11 is supplied with the pressure medium on its right side in the drawing by a first pressure medium source 15, a control valve 16 adjusted to the right in the drawing, a line A and a check valve 17.
  • Pressure medium is supplied to the check valve 17 from a second pressure medium source 18 via a control valve F via a control line F, through which the check valve 17 is held in the unlocked state. Because of a simple check valve 20 provided in another line F connected to the right side of the actuating cylinder 11, the pressure medium cannot flow away.
  • the left side of the Actuating cylinder 11 can be connected to the pressure medium source 15 by moving the control valve 16 into the left position. This connection is made in order to release or reset the broad side plate 5.
  • the hydraulically actuated clamping element 12 arranged on the piston rod 13 has a conical clamping piece 12a and a piston 12b arranged thereon on both sides with pressure medium.
  • the clamping element 12 is unlocked by supplying pressure medium via a line C with the control valve 19 in the right position. If the control valve 19 is brought into the left position, that is to say into the position shown in the figure, then pressure medium is supplied via the line D with the result that the clamping piece 12a clamps on the piston rod 13 and fixes it.
  • a control device 21 controls the control valves 16, 19 as a function of the pressure on the right side of the control cylinder 11, which is monitored by means of a pressure monitor 22.
  • the left side of the spacer cylinder 14 is connected via a line G to line A, so that both cylinders 11, 12 are acted upon with the same pressure.
  • the piston of the spacer cylinder 14 is held in the position shown in the drawing.
  • the operating pressure predetermined by the pressure medium source 15 is held on the actuating cylinder 11.
  • the adjustable broad side wall 5 is pressed with the clamping force corresponding to the pressure against the end faces of the narrow side walls 2, 3. Since pressure medium is simultaneously supplied via the control line E from the further pressure medium source 18 via a check valve 23, the check valve 17 is kept in the unlocked state.
  • the check valve 20 blocks against it. This means that the piston of the actuating cylinder 11 and thus also the broad side plate 5 is supported resiliently against the pressure of the pressure medium source 15.
  • the pressure is monitored by a pressure switch 22 and reported to the control device 21. If the pressure falls below a limit value, the control valve 19 is reversed into the position shown in the drawing. At the same time, the control valve 16 is reversed into the middle position shown in the drawing.
  • the result of these actuating processes is that the clamping element 12 clamps the piston rod 13, the check valve 17 is no longer held in the unlocked state and the right side of the piston of the actuating cylinder 11 is supplied with pressure medium via the check valve 20.
  • the fact that the actuating cylinder 11 remains in this position during the reaction time of the clamping element 12 is ensured by supplying pressure medium from a pressure medium reservoir 24.
  • the clamping element 12 is also activated and the lines A and G are switched off from the pressure medium supply and relieved of pressure.
  • the broad side plate 5 can then via the path defined by the piston of the spacer cylinder 14 back away.
  • control valve 16 is moved to the left when the clamping element 12 is released, so that pressure medium is supplied via line B to the left side of the actuating cylinder 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Mold Materials And Core Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Types And Forms Of Lifts (AREA)
  • Confectionery (AREA)
  • Fats And Perfumes (AREA)

Abstract

The mould includes wide side plates 4, 5 and adjustable narrow side plates 2, 3 which can be clamped by the wide side plates 4, 5. Adjusting cylinders 11 operable by a hydraulic pressure medium are used to adjust and tension the wide side plate 5. To prevent the tensioning from becoming accidentally loosened if the pressure medium fails, the wide side plate 5 is additionally supported, more particularly on clamping elements 12 which can be clamped to the piston rods 13 of the adjusting cylinders 11. A control device 21 activates the clamping elements 12 when a limit pressure is reached at the adjusting cylinders 11.

Description

Die Erfindung bezieht sich auf eine Kokille zum Stranggießen, bestehend aus Breitseitenplatten, von denen die eine eine Festseitenwand und die andere eine Losseitenwand bilden, und verstellbaren, von den Breitseitenplatten festklemmbaren Schmalseitenplatten sowie aus auf eine Stützkraft einstellbaren Stellzylindern für die die Losseitenwand bildende Breitseitenplatte.The invention relates to a mold for continuous casting, consisting of broad side plates, one of which forms a fixed side wall and the other a loose side wall, and adjustable narrow side plates which can be clamped by the broad side plates, and of adjusting cylinders which can be adjusted to a supporting force for the broad side plate forming the loose side wall.

Kokillen dieser Art sind in verschiedenen Ausführungen bekannt. Bei solchen Kokillen sind in der Regel beide Schmalseitenplatten mittels Stellorganen, insbesondere hydraulischen Stellzylindern verstellbar, während von den Breitseitenplatten die eine Breitseitenplatte in einer durch einstellbare Stützelemente, zum Beispiel Einstellschrauben, fest vorgegebenen Position in einem Rahmen fixiert ist und somit eine Festseitenwand bildet, ist die andere Breitseitenplatte über Stellorgane, insbesondere hydraulische Stellzylinder verstellbar und bildet somit eine Losseitenwand. Durch die Klemmkraft der durch die hydraulischen Stellzylinder beaufschlagten Breitseitenplatte werden während des Gießbetriebes die Schmalseitenplatten kraftschlüssig in der gewünschten Lage zwischen den Breitseitenplatten eingeklemmt. Der Vorteil der Abstützung der Breitseiten an Stellzylindern besteht darin, daß die Stützkraft einstellbar ist. Bei Überschreiten der Stützkraft durch den in der Kokille sich bildenden Strang kann die Breitseite ausweichen (EP 0 107 564 B1; DE 32 35 673 A1).Chill molds of this type are known in various designs. In such molds, both narrow side plates are generally adjustable by means of actuators, in particular hydraulic actuating cylinders, while one of the broad side plates is fixed in a frame in a position predetermined by adjustable support elements, for example adjusting screws, and thus forms a fixed side wall other broad side plate adjustable via actuators, in particular hydraulic actuating cylinders and thus forms a loose side wall. Due to the clamping force of the hydraulic actuators Broad side plate, the narrow side plates are clamped non-positively in the desired position between the broad side plates during the casting operation. The advantage of supporting the broad sides on actuating cylinders is that the supporting force can be adjusted. If the supporting force is exceeded by the strand forming in the mold, the broad side can deflect (EP 0 107 564 B1; DE 32 35 673 A1).

Für die Formathaltigkeit der Kokille kommt der Druckbeaufschlagung der Stellzylinder der Breitseitenplatte entscheidende Bedeutung zu, denn bei Druckabfall geht die Verklemmung mit der Folge verloren, daß die Platten dem Druck in der Kokille nachgeben und auswandern.For the format of the mold, the pressurization of the actuating cylinder of the broad side plate is of crucial importance, because if the pressure drops, the jamming is lost with the result that the plates give in to the pressure in the mold and migrate.

Ferner ist eine Kokille bekannt, bei der die Verstellung der Breitseitenplatten mittels Stellschrauben erfolgt. Um die Klemmkraft für die Schmalseitenplatte aufzubringen, sind die Breitseitenplatten über Tellerfederpakete an den Stellschrauben abgestützt. Zur Spannung der Tellerfederpakete dienen hydraulische Spannzylinder. Während des Gießbetriebes sind diese hydraulischen Spannzylinder nicht wirksam. Die Breitseitenplatten stützen sich dann über die unter Vorspannung gesetzten Tellerfederpakete an den als starre Widerlager dienenden Stellschrauben ab. Bei dieser Kokille besteht zwar nicht die Gefahr wie bei den anderen Kokillen, daß durch Ausfall des Druckmittels die Klemmkraft verlorengeht, doch ist der konstruktive Aufwand wegen des Tellerfederpaketes, der Stellschrauben und der Spannzylinder erheblich (DE-OS 27 42 742).Furthermore, a mold is known in which the broadside plates are adjusted by means of adjusting screws. In order to apply the clamping force for the narrow side plate, the broad side plates are supported on the setscrews by spring washers. Hydraulic tensioning cylinders are used to tension the plate spring assemblies. These hydraulic clamping cylinders are not effective during the casting operation. The broad side plates are then supported by the set of spring washers set under prestress on the set screws serving as rigid abutments. With this mold there is not the danger as with the other molds that the clamping force is lost due to the failure of the pressure medium, but the design effort is considerable because of the plate spring assembly, the set screws and the clamping cylinder (DE-OS 27 42 742).

Schließlich ist eine Kokille bekannt, bei der zur Verstellung der Schmalseitenplatten hydraulische Stellzylinder vorgesehen sind. Parallel zu diesen hydraulischen Stellzylindern sind an den Schmalseiten Führungsholme gekuppelt, die in hydraulisch beaufschlagten Klemmbuchsen fixierbar sind. Diese Klemmbuchsen werden aktiviert, wenn mittels des Stellzylinders die zugehörige Schmalseitenplatte in die gewünschte Position gebracht worden ist (DT 26 20 751 A1).Finally, a mold is known in which hydraulic actuating cylinders are provided for adjusting the narrow side plates. Parallel to these hydraulic actuating cylinders are on the narrow sides Coupled guide rails that can be fixed in hydraulically actuated clamping bushes. These clamping bushes are activated when the associated narrow side plate has been brought into the desired position by means of the actuating cylinder (DT 26 20 751 A1).

Der Erfindung liegt die Aufgabe zugrunde, eine Kokille zum Stranggießen zu schaffen, bei der mit geringem konstruktiven Aufwand eine sichere federelastische Abstützung der Breitseitenplatte gewährleistet ist.The invention has for its object to provide a mold for continuous casting, in which a safe spring-elastic support of the broad side plate is guaranteed with little design effort.

Diese Aufgabe wird erfindungsgemäß bei einer Kokille der eingangs genannten Art dadurch gelöst, daß die die Losseitenwand bildende Breitseitenplatte außer an den Stellzylindern an Stützelementen abstützbar ist, die in Abhängigkeit von einem Grenzwert des an den Stellzylindern wirksamen Druckes arretierbar sind.This object is achieved in a mold of the type mentioned in that the broad side plate forming the loose side wall can be supported on supporting elements, in addition to the actuating cylinders, which can be locked as a function of a limit value of the pressure acting on the actuating cylinders.

Die besonderen Vorteile der erfindungsgemäßen Kokille bestehen darin, daß die Klemmkraft der Breitseitenplatte durch die Stellzylinder aufgebracht wird, so daß sich eine federelastische Abstützung ergibt, und daß bei Ausfall des die Stellzylinder beaufschlagenden Druckes die Klemmkraft durch die dann wirksam werdenden zusätzlichen Stützelemente aufrechterhalten wird.The particular advantages of the mold according to the invention are that the clamping force of the broad side plate is applied by the actuating cylinder, so that there is a resilient support, and that if the pressure acting on the actuating cylinder fails, the clamping force is maintained by the additional support elements which then become effective.

Nach einer Ausgestaltung der Erfindung ist für die feststellbaren Stützelemente eine Steuereinrichtung mit einem Druckwächter vorgesehen, die die Stellorgane der Stützelemente ansteuert. Vorzugsweise sind die Stützelemente auf Stangen geführte Klemmelemente. Die Klemmelemente können hydraulisch betätigbar sein und als Spannkonen ausgebildet sein. Aus konstruktiven Gründen besonders vorteilhaft ist es, wenn die Klemmelemente auf die Kolbenstangen der Stellzylinder einwirken. In diesem Fall können je ein Stellzylinder und ein Klemmelement eine Baueinheit bilden.According to one embodiment of the invention, a control device with a pressure switch is provided for the lockable support elements, which controls the actuators of the support elements. The support elements are preferably clamping elements guided on rods. The clamping elements can be operated hydraulically and can be designed as clamping cones. For design reasons, it is particularly advantageous if the clamping elements act on the piston rods of the actuating cylinders. In this In each case, an actuating cylinder and a clamping element can form a structural unit.

Um zum Beispiel bei laufendem Gießbetrieb einen Formatwechsel vornehmen zu können, ist nach einer weiteren Ausgestaltung der Erfindung vorgesehen, daß die Kolbenstange eines jeden Stellzylinders über einen Distanzierzylinder mit definiertem Stellweg an der Breitseitenplatte derart angekuppelt ist, daß bei Druckentlastung des Distanzierzylinders die Klemmkraft der Breitseitenplatte gelockert ist. Durch die Messung des Stellweges kann die Klemmkraft so weit aufgehoben werden, daß eine Verstellung der Schmalseitenplatten möglich ist, die Dichtwirkung aber noch aufrechterhalten wird.In order, for example, to be able to make a format change while the casting operation is running, it is provided according to a further embodiment of the invention that the piston rod of each actuating cylinder is coupled to the broadside plate via a spacing cylinder with a defined travel path such that the clamping force of the broad side plate is relaxed when the spacing cylinder is relieved of pressure is. By measuring the travel, the clamping force can be eliminated so far that an adjustment of the narrow side plates is possible, but the sealing effect is still maintained.

Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Im einzelnen zeigen:

  • Fig. 1 eine Kokille im Horizontalschnitt in schematischer Darstellung und
  • Fig. 2 einen an eine Breitseitenplatte angekuppelten Stellzylinder mit zusätzlichem Stützelement in schematischer Darstellung.
The invention is explained in more detail below with the aid of a drawing representing an exemplary embodiment. In detail show:
  • Fig. 1 is a mold in horizontal section in a schematic representation and
  • Fig. 2 is a coupled to a broad side plate actuating cylinder with an additional support element in a schematic representation.

In einem Rahmen 1 sind Schmalseitenplatten 2,3 und Breitseitenplatten 4,5 gehalten. Während die Breitseitenplatte 4 unmittelbar am Rahmen 1 einstellbar abgestützt ist, ist die Breitseitenplatte 5 durch Stellzylinder 8,9 gegen den Rahmen 1 abgestützt. Die Schmalseitenplatten 2,3 sind mit in im Rahmen 1 geführten und daran widergelagerten Stellorganen 6,7 auf die gewünschte Breite des zu gießenden Stranges einstellbar. Während des Gießvorganges werden die Schmalseitenplatten 2,3 von den Breitseitenplatten 4,5 durch Klemmung gehalten. Während die Breitseitenplatte 4 im Rahmen 1 fixiert ist und somit eine Festseitenwand bildet, ist die Breitseitenplatte 5 mittels der im Rahmen 1 gehaltenen Stellzylinder 8,9 verstellbar und bildet somit eine Losseitenwand. Jeder der Stellzylinder 8,9 hat den in Figur 2 dargestellten Aufbau.Narrow side plates 2, 3 and wide side plates 4, 5 are held in a frame 1. While the broad side plate 4 is adjustably supported directly on the frame 1, the broad side plate 5 is supported against the frame 1 by actuating cylinders 8, 9. The narrow side plates 2, 3 can be adjusted to the desired width of the strand to be cast by means of actuators 6, 7 guided in frame 1 and supported thereon. During the casting process, the narrow side plates 2, 3 held by the broad side plates 4.5 by clamping. While the broad side plate 4 is fixed in the frame 1 and thus forms a fixed side wall, the broad side plate 5 is adjustable by means of the actuating cylinders 8, 9 held in the frame 1 and thus forms a loose side wall. Each of the actuating cylinders 8.9 has the structure shown in FIG. 2.

In einem im Rahmen 1 fixierten Gehäuse 10 sind als Baueinheit ein Stellzylinder 11 und ein Klemmelement 12 in Form eines hydraulisch betätigbaren Spannkonus untergebracht. Das Klemmelement 12 ist auf der Kolbenstange 13 des Stellzylinders 11 angeordnet und bildet somit ein Stützelement für die verstellbare Breitseitenplatte 5. Das freie Ende der Kolbenstange 13 ist über einen Distanzierzylinder 14 mit der beweglichen Breitseitenplatte 5 gekuppelt.An actuating cylinder 11 and a clamping element 12 in the form of a hydraulically actuated clamping cone are accommodated as a structural unit in a housing 10 fixed in the frame 1. The clamping element 12 is arranged on the piston rod 13 of the actuating cylinder 11 and thus forms a support element for the adjustable broad side plate 5. The free end of the piston rod 13 is coupled to the movable broad side plate 5 via a spacer cylinder 14.

Der Stellzylinder 11 ist beidseitig mit hydraulischem Druck beaufschlagbar. Zum Festklemmen der Schmalseitenplatten 2,3 wird dem Stellzylinder 11 auf seiner in der Zeichnung rechten Seite von einer ersten Druckmittelquelle 15, einem in der Zeichnung nach rechts verstellten Stellventil 16, einer Leitung A und einem Rückschlagventil 17 das Druckmittel zugeführt. Von einer zweiten Druckmittelquelle 18 wird dem Rückschlagventil 17 über ein in der Zeichnung nach rechts verstelltes Stellventil 19 über eine Steuerleitung F Druckmittel zugeführt, durch das das Rückschlagventil 17 im entsperrten Zustand gehalten wird. Wegen eines in einer weiteren, an der rechten Seite des Stellzylinders 11 angeschlossenen Leitung F vorgesehenen einfachen Rückschlagventils 20 kann das Druckmittel nicht abfließen.Hydraulic pressure can be applied to the actuating cylinder 11 on both sides. To clamp the narrow side plates 2, 3, the actuating cylinder 11 is supplied with the pressure medium on its right side in the drawing by a first pressure medium source 15, a control valve 16 adjusted to the right in the drawing, a line A and a check valve 17. Pressure medium is supplied to the check valve 17 from a second pressure medium source 18 via a control valve F via a control line F, through which the check valve 17 is held in the unlocked state. Because of a simple check valve 20 provided in another line F connected to the right side of the actuating cylinder 11, the pressure medium cannot flow away.

Die in der Zeichnung dargestellte linke Seite des Stellzylinders 11 ist durch Verstellen des Stellventils 16 in die linke Position mit der Druckmittelquelle 15 verbindbar. Diese Verbindung wird hergestellt, um die Breitseitenplatte 5 zu lösen bzw. zurückzustellen.The left side of the Actuating cylinder 11 can be connected to the pressure medium source 15 by moving the control valve 16 into the left position. This connection is made in order to release or reset the broad side plate 5.

Das auf der Kolbenstange 13 angeordnete, hydraulisch betätigbare Klemmelement 12 weist ein konisches Klemmstück 12a und einen darauf angeordneten beidseitig mit Druckmittel beaufschlagbaren Kolben 12b auf. Durch Zuführen von Druckmittel über eine Leitung C bei in der rechten Position befindlichem Stellventil 19 ist das Klemmelement 12 entsperrt. Wird das Stellventil 19 in die linke Position, also in die in der Figur dargestellte Position gebracht, dann wird Druckmittel über die Leitung D mit der Folge zugeführt, daß das Klemmstück 12a auf der Kolbenstange 13 festklemmt und diese fixiert.The hydraulically actuated clamping element 12 arranged on the piston rod 13 has a conical clamping piece 12a and a piston 12b arranged thereon on both sides with pressure medium. The clamping element 12 is unlocked by supplying pressure medium via a line C with the control valve 19 in the right position. If the control valve 19 is brought into the left position, that is to say into the position shown in the figure, then pressure medium is supplied via the line D with the result that the clamping piece 12a clamps on the piston rod 13 and fixes it.

Eine Steuereinrichtung 21 steuert die Stellventile 16,19 in Abhängigkeit von dem Druck an der rechten Seite des Stellzylinders 11 an, der mittels eines Druckwächters 22 überwacht wird.A control device 21 controls the control valves 16, 19 as a function of the pressure on the right side of the control cylinder 11, which is monitored by means of a pressure monitor 22.

Die linke Seite des Distanzierzylinders 14 ist über eine Leitung G mit der Leitung A verbunden, so daß beide Zylinder 11,12 mit dem gleichen Druck beaufschlagt werden. Durch eine größer bemessene Druckfläche des Distanzierzylinders 14 wird allerdings erreicht, daß die Stellkraft des Stellzylinders 11 über das Druckpolster auf der linken Seite des Distanzierzylinders 14 wirksam wird.The left side of the spacer cylinder 14 is connected via a line G to line A, so that both cylinders 11, 12 are acted upon with the same pressure. A larger pressure surface of the spacer cylinder 14, however, ensures that the actuating force of the actuating cylinder 11 is effective via the pressure cushion on the left side of the spacer cylinder 14.

Die Funktion des Stellzylinders 11 in Verbindung mit dem Klemmelement 12 und dem Distanzierzylinder 14 in Verbindung mit der Steuereinrichtung 21 ist folgende:The function of the actuating cylinder 11 in connection with the clamping element 12 and the spacing cylinder 14 in connection with the control device 21 is as follows:

Wenn von der Druckmittelquelle 15 der Leitung A und G Druck zugeführt wird, wird der Kolben des Distanzierzylinders 14 in der in der Zeichnung dargestellten Position gehalten. Am Stellzylinder 11 wird der von der Druckmittelquelle 15 vorgegebene Betriebsdruck gehalten. Die verstellbare Breitseitenwand 5 wird mit der dem Druck entsprechenden Klemmkraft gegen die Stirnseiten der Schmalseitenwände 2,3 gedrückt. Da gleichzeitig über die Steuerleitung E von der weiteren Druckmittelquelle 18 über ein Rückschlagventil 23 Druckmittel zugeführt wird, wird das Rückschlagventil 17 im entsperrten Zustand gehalten. Das Rückschlagventil 20 sperrt dagegen. Das bedeutet, daß der Kolben des Stellzylinders 11 und damit auch die Breitseitenplatte 5 gegen den Druck der Druckmittelquelle 15 federelastisch abgestützt ist.If from the pressure medium source 15 of line A and G pressure is supplied, the piston of the spacer cylinder 14 is held in the position shown in the drawing. The operating pressure predetermined by the pressure medium source 15 is held on the actuating cylinder 11. The adjustable broad side wall 5 is pressed with the clamping force corresponding to the pressure against the end faces of the narrow side walls 2, 3. Since pressure medium is simultaneously supplied via the control line E from the further pressure medium source 18 via a check valve 23, the check valve 17 is kept in the unlocked state. The check valve 20 blocks against it. This means that the piston of the actuating cylinder 11 and thus also the broad side plate 5 is supported resiliently against the pressure of the pressure medium source 15.

Der Druck wird von einem Druckwächter 22 überwacht und der Steuereinrichtung 21 gemeldet. Fällt der Druck unter einen Grenzwert, dann erfolgt eine Umsteuerung des Stellventils 19 in die in der Zeichnung dargestellte Position. Gleichzeitig erfolgt eine Umsteuerung des Stellventils 16 in die in der Zeichnung dargestellte mittlere Position. Diese Stellvorgänge haben zur Folge, daß das Klemmelement 12 die Kolbenstange 13 festklemmt, das Rückschlagventil 17 nicht länger im entsperrten Zustand gehalten wird und der rechten Seite des Kolbens des Stellzylinders 11 Druckmittel über das Rückschlagventil 20 zugeführt wird. Das Beharren des Stellzylinders 11 in dieser Position während der Reaktionszeit des Klemmelementes 12 wird durch Druckmittelzufuhr aus einem Druckmittelspeicher 24 gewährleistet.The pressure is monitored by a pressure switch 22 and reported to the control device 21. If the pressure falls below a limit value, the control valve 19 is reversed into the position shown in the drawing. At the same time, the control valve 16 is reversed into the middle position shown in the drawing. The result of these actuating processes is that the clamping element 12 clamps the piston rod 13, the check valve 17 is no longer held in the unlocked state and the right side of the piston of the actuating cylinder 11 is supplied with pressure medium via the check valve 20. The fact that the actuating cylinder 11 remains in this position during the reaction time of the clamping element 12 is ensured by supplying pressure medium from a pressure medium reservoir 24.

Um eine definierte Entspannung der Klemmung zu erhalten, werden ebenfalls das Klemmelement 12 aktiviert und die Leitungen A und G von der Druckmittelzufuhr abgeschaltet und druckentlastet. Die Breitseitenplatte 5 kann dann über den vom Kolben des Distanzierzylinders 14 festgelegten Weg zurückweichen.In order to obtain a defined relaxation of the clamping, the clamping element 12 is also activated and the lines A and G are switched off from the pressure medium supply and relieved of pressure. The broad side plate 5 can then via the path defined by the piston of the spacer cylinder 14 back away.

Um eine Verstellung der Breitseitenplatte 5 vorzunehmen, wird bei gelöstem Klemmelement 12 das Stellventil 16 nach links verstellt, so daß Druckmittel über die Leitung B der linken Seite des Stellzylinders 11 zugeführt wird.In order to make an adjustment of the broad side plate 5, the control valve 16 is moved to the left when the clamping element 12 is released, so that pressure medium is supplied via line B to the left side of the actuating cylinder 11.

Claims (8)

1. Kokille zum Stranggießen, bestehend aus Breitseitenplatten (4,5), von denen die eine (4) eine Festseitenwand und die andere (5) eine Losseitenwand bilden, und verstellbaren, von den Breitseitenplatten (4,5) festklemmbaren Schmalseitenplatten (2,3) sowie aus auf eine Stützkraft einstellbaren Stellzylindern (8,9,11) für die die Losseitenwand bildende Breitseitenplatte (5),
dadurch gekennzeichnet, daß die die Losseitenwand bildende Breitseitenplatte (5) außer an den Stellzylindern (8,9,11) an Stützelementen (12) abstützbar ist, die in Abhängigkeit von einem Grenzwert des an den Stellzylindern (8,9,11) wirksamen Druckes arretierbar sind.1. Mold for continuous casting, consisting of broad side plates (4,5), one (4) of which forms a fixed side wall and the other (5) form a loose side wall, and adjustable narrow side plates (2, 2) which can be clamped by the broad side plates (4,5). 3) and from adjusting cylinders (8, 9, 11) adjustable to a supporting force for the wide side plate (5) forming the loose side wall,
characterized in that the broad side plate (5) forming the loose side wall can be supported on supporting elements (12) in addition to the adjusting cylinders (8,9,11), which depending on a limit value of the pressure acting on the adjusting cylinders (8,9,11) can be locked. 2. Kokille nach Anspruch 1,
dadurch gekennzeichnet, daß für die feststellbaren Stützelemente (12) eine Steuereinrichtung (21) mit einem Druckwächter (22) vorgesehen ist, die die Stellorgane der Stützelemente (12) ansteuert.2. mold according to claim 1,
characterized in that a control device (21) with a pressure monitor (22) is provided for the lockable support elements (12), which controls the actuators of the support elements (12). 3. Kokille nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Stützelemente (12) auf Stangen (13) geführte Klemmelemente sind.3. mold according to claim 1 or 2,
characterized in that the support elements (12) are clamping elements guided on rods (13). 4. Kokille nach Anspruch 3,
dadurch gekennzeichnet, daß die Stangen (13) die Kolbenstangen der Stellzylinder (8,9,11) sind.4. mold according to claim 3,
characterized in that the rods (13) are the piston rods of the actuating cylinders (8,9,11). 5. Kokille nach Anspruch 3,
dadurch gekennzeichnet, daß die Klemmelemente (12) hydraulisch betätigbar sind.5. mold according to claim 3,
characterized in that the clamping elements (12) can be actuated hydraulically. 6. Kokille nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß die Klemmelemente (12) Spannkonen (12a,12b) sind.6. mold according to claim 4 or 5,
characterized in that the clamping elements (12) are clamping cones (12a, 12b). 7. Kokille nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß je ein Stellzylinder (11) und ein Klemmelement (12) eine Baueinheit bilden.7. mold according to one of claims 1 to 6,
characterized in that an adjusting cylinder (11) and a clamping element (12) each form a structural unit. 8. Kokille nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Kolbenstange (13) eines jeden Stellzylinders (11) über einen Distanzierzylinder (14) mit definiertem Stellweg an der Breitseitenplatte (5) derart angekuppelt ist, daß bei Druckentlastung des Distanzierzylinders (14) die Klemmkraft der Breitseitenplatte (5) gelockert ist.8. mold according to one of claims 1 to 7,
characterized in that the piston rod (13) of each actuating cylinder (11) is coupled to the broad side plate (5) via a spacer cylinder (14) with a defined travel path such that the clamping force of the broad side plate (5) is relaxed when the spacing cylinder (14) is relieved of pressure is.
EP88116855A 1987-10-23 1988-10-11 Mould for continuous casting Expired - Lifetime EP0312889B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116855T ATE73699T1 (en) 1987-10-23 1988-10-11 MOLD FOR CONTINUOUS CASTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873735883 DE3735883A1 (en) 1987-10-23 1987-10-23 CHOCOLATE TO CONTINUOUSLY
DE3735883 1987-10-23

Publications (3)

Publication Number Publication Date
EP0312889A2 true EP0312889A2 (en) 1989-04-26
EP0312889A3 EP0312889A3 (en) 1989-12-06
EP0312889B1 EP0312889B1 (en) 1992-03-18

Family

ID=6338920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116855A Expired - Lifetime EP0312889B1 (en) 1987-10-23 1988-10-11 Mould for continuous casting

Country Status (6)

Country Link
US (1) US4883111A (en)
EP (1) EP0312889B1 (en)
JP (1) JPH02127945A (en)
AT (1) ATE73699T1 (en)
DE (2) DE3735883A1 (en)
ES (1) ES2030817T3 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP0616864A1 (en) * 1993-03-22 1994-09-28 MANNESMANN Aktiengesellschaft Apparatus for the adjustment of a continuous casting mould
FR2703934A1 (en) * 1993-04-15 1994-10-21 Lorraine Laminage Support arm for a large face of a continuous-casting mould and continuous-casting mould
AT408322B (en) * 1999-01-15 2001-10-25 Voest Alpine Ind Anlagen CONTINUOUS CHOCOLATE
CN105555437A (en) * 2013-04-23 2016-05-04 达涅利机械设备股份公司 Apparatus for continuous casting and method to assemble said apparatus for continuous casting

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
FI92405C (en) 1992-12-22 1994-11-10 Borealis Holding As New olefin polymerization catalyst, process for its preparation and its use for polymerization of olefins

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DE2742742A1 (en) * 1976-09-28 1978-03-30 Fives Cail Babcock DEVICE FOR ADJUSTING ONE OF THE TWO FRONT PANELS OF A CONTINUOUS CASTING CHOCOLATE
EP0044291A1 (en) * 1980-07-11 1982-01-20 VOEST-ALPINE Aktiengesellschaft Means for measuring the frictional force between the mould and the strand at continuous casting
JPS5764446A (en) * 1980-10-06 1982-04-19 Hitachi Zosen Corp Mold for continuous casting equipment
DE3235673A1 (en) * 1981-10-09 1983-04-28 Voest-Alpine AG, 4010 Linz PLATE CHOCOLATE FOR CONTINUOUS CASTING
EP0107564A1 (en) * 1982-10-08 1984-05-02 Clecim Apparatus for the adjustment of a continuous-casting mould

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EP0044291A1 (en) * 1980-07-11 1982-01-20 VOEST-ALPINE Aktiengesellschaft Means for measuring the frictional force between the mould and the strand at continuous casting
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616864A1 (en) * 1993-03-22 1994-09-28 MANNESMANN Aktiengesellschaft Apparatus for the adjustment of a continuous casting mould
FR2703934A1 (en) * 1993-04-15 1994-10-21 Lorraine Laminage Support arm for a large face of a continuous-casting mould and continuous-casting mould
AT408322B (en) * 1999-01-15 2001-10-25 Voest Alpine Ind Anlagen CONTINUOUS CHOCOLATE
CN105555437A (en) * 2013-04-23 2016-05-04 达涅利机械设备股份公司 Apparatus for continuous casting and method to assemble said apparatus for continuous casting

Also Published As

Publication number Publication date
DE3735883C2 (en) 1990-10-18
ES2030817T3 (en) 1992-11-16
ATE73699T1 (en) 1992-04-15
EP0312889B1 (en) 1992-03-18
DE3735883A1 (en) 1989-05-03
US4883111A (en) 1989-11-28
DE3869315D1 (en) 1992-04-23
JPH02127945A (en) 1990-05-16
EP0312889A3 (en) 1989-12-06

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