EP0271603A1 - Casting apparatus for metals having an endless track-type supporting element - Google Patents

Casting apparatus for metals having an endless track-type supporting element Download PDF

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Publication number
EP0271603A1
EP0271603A1 EP86117792A EP86117792A EP0271603A1 EP 0271603 A1 EP0271603 A1 EP 0271603A1 EP 86117792 A EP86117792 A EP 86117792A EP 86117792 A EP86117792 A EP 86117792A EP 0271603 A1 EP0271603 A1 EP 0271603A1
Authority
EP
European Patent Office
Prior art keywords
mold
mold part
endless chain
respect
movable
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
EP86117792A
Other languages
German (de)
French (fr)
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EP0271603B1 (en
Inventor
Herbert Dipl.-Ing. Berendes
Dieter Dipl.-Ing. Figge
Gerd Artz
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.)
Vodafone GmbH
Original Assignee
Fried Krupp AG
Mannesmann 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 Fried Krupp AG, Mannesmann AG filed Critical Fried Krupp AG
Priority to EP86117792A priority Critical patent/EP0271603B1/en
Priority to DE8686117792T priority patent/DE3670967D1/en
Priority to AT86117792T priority patent/ATE52433T1/en
Priority to ES86117792T priority patent/ES2015527B3/en
Priority to US07/130,106 priority patent/US4770228A/en
Priority to JP62319173A priority patent/JPS63165048A/en
Publication of EP0271603A1 publication Critical patent/EP0271603A1/en
Application granted granted Critical
Publication of EP0271603B1 publication Critical patent/EP0271603B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by caterpillars

Definitions

  • the invention relates to a casting device for metals with a continuously rotating support element, on which a plurality of mold parts movable in pairs in relation to one another, each showing mold space sections, can be carried, and with adjusting elements by means of which the mold space - which is located on a section of the support element circulation path is formed by a part of the mold part pairs which also abut one another in the circumferential direction - closed in the area of the metal feed and - seen in the circumferential direction - can be opened at a predetermined distance from it.
  • High casting speeds can be achieved with casting devices which are designed primarily as a double belt casting machine or as a casting wheel.
  • the double belt casting machine has a rectilinear mold space from which the cast product can emerge without unfavorable deformation and the length of which does not, or at most insignificantly, affect the machine height.
  • the disadvantage of this known casting device is that it is technically complex and under certain circumstances cannot be used economically in cases in which relatively low casting rates are required.
  • Pouring devices in the form of casting wheels are relatively simple in construction, but have the disadvantage, in particular, that the length of the mold space, which is predetermined by the metallurgical conditions, results in a large wheel diameter with a corresponding machine height. Due to the curvature of the mold space, the strand is subject to an unfavorable bending stress. In addition, an uneven cooling of the strand being formed on the top and bottom cannot be avoided.
  • a casting device of the type mentioned in the form of a casting wheel is known, the mold space of which is delimited on the one hand by the wheel rim and on the other hand by swiveling mold halves. These can be brought into a closed position by means of cylinders, in which they seal the mold space to the outside, or can be moved into an open position by pivoting away from the wheel rim, which enables the strand to be transported away from the area of the casting wheel.
  • DE-C3-21 09 254 describes a casting device with a caterpillar mold, which is formed by two rotating caterpillar chains interacting in the mold space area. This known casting device also does not allow the mold space cross section to be adapted to the shrinking processes already mentioned.
  • the invention has for its object to design a casting device with reasonable technical effort in such a way that it has a straight mold room; this should be designed in such a way that the solidification-related shrinkage processes can be at least partially compensated for.
  • the object is achieved by a casting device with the features of claim 1.
  • the basic idea of the invention then consists in the use of an endless chain running oval with chain wheels and pairs of mold parts that are movable relative to one another, which are guided over suitably aligned support rollers at least in the mold space area and each temporarily form a mold space section with one another.
  • the interaction of several pairs of mold parts that follow one another in the circumferential direction creates an uninterrupted mold space in an area in which the endless chain runs in a straight line; the length of which is determined by the number of pairs of mold parts whose mold parts (between the metal feed area and the mold space end) assume the closed position.
  • a change in the mold space cross-section to adapt to Shrinkage processes are made possible by the fact that all contact surfaces, via which the mold parts of each mold part pair can be supported against each other, have the same angle of inclination with respect to a reference plane (with a horizontal arrangement of the mold space, for example, with respect to a horizontal plane through the mold space longitudinal axis) and are alternating overlap in the closed position; the corresponding angle of inclination can in particular also be 0 °.
  • the inclination of the mold space extending between the chain wheels can be arbitrary, ie it can be arranged horizontally, inclined or also vertically.
  • the contact surfaces between the mold parts of each mold part pair are preferably aligned in such a way that a displacement transversely to the longitudinal axis of the mold space does not result in a change in the height dimension of the mold part pairs.
  • each mold part carries a mold wall section that - Seen perpendicular to the longitudinal axis of the mold - is angled (claim 2). If, for example, one mold part forms the lower wall and left side wall of the relevant mold space section, the associated second mold part comprises a section of the upper wall and right side wall of the mold space.
  • the endless chain is equipped with roller bearings that are supported at least in the mold space area on a guideway (claim 3).
  • the connection between the pairs of mold parts and the endless chain is preferably designed in such a way that each pair of mold parts on the endless chain is assigned two pairs of rolling bearings which follow one another in the circumferential direction (claim 4); Two adjacent pairs of mold parts therefore each have a common pair of roller bearings on the endless chain.
  • the subject of the invention is further characterized in that in each case the mold part of each mold part pair, which carries the mold wall section lying outside with respect to the endless chain, is movable with respect to the endless chain (claim 5); if the mold space lies horizontally above the endless chain or runs slightly inclined in the direction of rotation, the upper part of the mold is held movable with respect to the endless chain, while the lower part of the mold is a stationary part with respect to it.
  • the mold part of each mold part pair which is movable with respect to the endless chain, is equipped with two support rollers (claim 6).
  • the mold part stationary with respect to the endless chain can also be equipped with a support roller which is opposite one of the support rollers of the movable mold part with respect to the mold space (claim 8).
  • each mold part required to release the strand can be achieved by means of a straight guide on which the movable mold part is held so as to be displaceable transversely to the longitudinal axis of the mold space with respect to the stationary mold part (claim 8);
  • the straight guide consists in each case of a guide rod held on the endless chain, along which the movable mold part can be moved into the closed position or into an open position.
  • Such a straight guide has the advantage that the interacting mold parts can also be moved in a straight line against one another in the closed position in order to enable the shrinkage compensation already mentioned.
  • each mold part pair can also be equipped with a rotary connection, via which the movable mold part is held pivotably with respect to the stationary mold part (claim 9).
  • the slewing ring should have a play which compensates for the compensating movement of the mold parts resting against one another with the metal shrinkage Approaching two opposing mold wall sections allows (claim 10);
  • Such a rotary connection can be realized, for example, in that the associated rotary axis is also displaceable to a sufficient extent in the transverse direction. If the mold part pairs are equipped with a rotary connection, the opening stroke at the end of the mold space can be effected by a spring element, via which the movable mold part can be pivoted into the open position (claim 11).
  • Each movable mold part preferably lies alternately on one of its support rollers against a closing guide and an opening guide which has an adjustment section which causes a closing or opening movement (claim 12); at least the closing guide, but expediently also the opening guide, is designed in connection with its adjustment section in such a way that the movable mold part remains in the closed position or open position over the length of the mold space or up to the adjustment section of the closing guide in front of the mold space.
  • the casting device has two chain wheels 2 and 3 mounted on a frame 1 with a fixed axis of rotation 2a and 3a, on which an endless chain 5 is supported in the direction of arrow 4. On its outward-facing side in the circumferential direction, this carries a plurality of mold part pairs 6, the components of which can move relative to one another (cf. for example FIGS. 5 and 6) with one another can delimit a mold space section with length a.
  • the mold space 7 runs with the horizontal mold space longitudinal axis 7a (see, for example, FIG. 5) above the endless chain; its length is slightly less than the mutual distance between the axes of rotation 2a and 3a of the sprockets 2, 3.
  • the metal to be processed is fed to the mold space above the front sprocket 2 in the liquid state through a not shown pouring channel or closed pouring nozzle made of refractory ceramics, solidifies in the area of the mold space to form a strand shell with the strand shell increasing in the direction of rotation (arrow 4) and leaves the mold space in the area above of the rear sprocket 3 as a partially solidified strand 8 in the direction of arrow 9 (see FIG. 2).
  • the length of the mold space - and accordingly the number of mold part pairs 6 which cooperate during its formation and are cooled at least in the mold space area - is dimensioned such that the strand 8 at the mold space end 7b already has a sufficiently stable strand shell.
  • the front sprocket 2 is supported on the frame 1 via bearings 10 and is connected via a clutch 11 to a drive motor, not shown; the rear sprocket 3 is held on the frame 1 via bearing 12.
  • the mold part pairs 6 which cooperate above the sprockets 2, 3 in the mold space area rest against one another via their mutually facing end surfaces 13 arranged in the circumferential direction, thus forming an uninterrupted mold space of sufficient length in the area in which the endless chain 5 runs in a straight line.
  • the endless chain 5 is composed of paired angular webs 14 which are supported on chain pins 15 and to which a pair of mold parts 6 (see, for example, FIG. 5) is attached.
  • Each chain pin is laterally equipped with two roller bearings 16, by means of which the endless chain is supported on a straight guide path in the mold area; this consists of two chain rails 17 fastened to the frame 1.
  • the chain rails 17 ensure that the mold part pairs located in their area can only move in a straight line.
  • Each pair of mold parts 6 has two mold parts 6a and 6b which are movable relative to one another and form consoles, on each of which an angled mold wall section 6c or 6d - consisting of a heat-resistant copper alloy - is detachably held by means of a clamping jaw 18, for example by means of clamping screws (see, for example, Fig 5).
  • the contact surfaces 6e and 6f by means of which the mold wall sections 6c and 6d can be supported against one another, are oriented at the same angle of inclination with respect to a common reference plane - for example with respect to the horizontal plane 7c indicated in FIG. 5 through the longitudinal axis 7a of the mold space; this is 0 ° in the illustrated exemplary embodiments.
  • the equiangular orientation of the contact surfaces 6e and 6f allows the mold wall sections 6c and 6d, which lie closely against one another, to be laterally displaced relative to one another and thus to change the width of the mold space 7 from the point of view of shrinkage compensation.
  • the mold part pairs are normally air-cooled in the mold space area, that is to say their mold wall sections 6c, 6d have none Thermal insulation.
  • the casting device is equipped with a cooling unit, preferably outside the mold space area between the chain wheels. A gaseous or liquid coolant is supplied to the pairs of mold parts passing by.
  • the mold parts 6a, 6b of each mold part pair 6 are movably attached to one another via a rotary connection 19 with a hinge pin 19a which is connected via two holding plates 19b and an intermediate counter bearing 19c is immovably connected to the mold part 6b or movably to the mold part 6a.
  • the counter bearing 19c is supported with a play s on the hinge pin 19a, so that the mold parts interacting in pairs and the associated mold wall sections 6c, 6d can also be laterally displaced in the closed position shown in FIG. 5.
  • Each movable mold part 6b is equipped with an upper support roller 20 and a lateral support roller 21 arranged perpendicular thereto, and each mold part 6a stationary with respect to the endless chain 5 is equipped with a side support roller 22; the latter lies opposite the support roller 21 with respect to the mold space 7.
  • the mentioned lateral support rollers each roll on a guide ruler 23 or 24 which is articulated on an adjusting bolt 25 or 26 and rests on a holding surface 27 or 28 fastened to the frame 1.
  • the mold part pairs forming the mold space 7 are held in the closed position (in which the mold wall sections 6c and 6d abut one another via their contact surfaces 6e and 6f) in that the upper support roller 20 is supported from below on a closing guide 29 which is stationary with respect to the frame 1 ; the length of which corresponds approximately to the length of the mold space, ie it is slightly shorter than the mutual distance between the sprocket axles 2a and 3a already mentioned (cf. FIGS. 1 and 2). Outside the mold area, the support roller 20 rolls on a likewise fixed opening guide 30. This is such that the movable mold part 6b is swiveled clockwise following the end of the mold space and is held in this open position during the further orbital movement (cf. FIG. 6).
  • the closing guide 29 has an adjustment section 29a, via which the inclination of the upper support roller 20 is gradually reduced until the mold part 6b again reaches and maintains the closed position shown in FIG. 5. Holding the mold part 6b in the open position indicated in FIG. 6 is the prerequisite for the sufficiently solidified strand to be transported straight away from the area of the casting device and a stationary metal feed can be arranged in the area in front of the mold space, the front section of which extends into the mold space.
  • FIG. 7 essentially differs from the previously described embodiment only in that the rotary connection 19 between the mold parts 6b and 6a is additionally equipped with a spring element 31 in the form of a torsion spring. This is connected to the parts 19b and 19c at the same time and exerts a restoring force, by means of which the movable mold part 6b is pivoted upwards in a clockwise direction as soon as the upper support roller 20 is no longer supported on the closing guide 29 outside the mold space area. Since the mold part pairs 6 are automatically moved into the open position under the action of the spring element 31, the use of an opening guide can be dispensed with.
  • a spring element 31 in the form of a torsion spring.
  • the spring element is designed and / or held on the parts 19b and 19c in such a way that there is a displacement of the mold parts lying against one another 6a and 6b in the order of a few tenths of a millimeter not disabled.
  • the hinge pin 19a engages with a sufficiently dimensioned play s in the counter bearing 19c of the stationary mold part 6a.
  • the spring element can also be designed and arranged differently than shown; in particular, the use of a compression spring is possible, which is supported on the counter bearing 19c between the mold wall section 6d and the support roller 21 on the movable mold part 6b.
  • the embodiment according to FIGS. 8 and 9 differs in principle from the previously described embodiments in that the movable mold part 6b of each mold part pair 6 can be displaced in a straight line with respect to the stationary mold part 6a and that only the movable mold part with support rollers 20 aligned perpendicular to one another, 21 is equipped.
  • the straight guide consists of a guide rod 32 fastened to the angular webs 14 of the endless chain 5, which is aligned transversely to the longitudinal axis 7a of the mold space and on which the mold part 6b is supported via a sliding bush 33.
  • the lateral position of the mold part 6b with respect to the stationary mold part 6a and the endless chain 5 is determined in that the lateral support roller 21 extends over the length of the mold space and with a narrow range of motion between an inner one Guide rail 34 and an outer guide rail 35 is held. Both guide rails are part of a guide cage 36 which rests displaceably on the holding surface 27 and which can be locked in the desired position by means of an articulated adjustment bolt 37.
  • the sealing between the mold wall sections 6c and 6d takes place in the manner already mentioned in that the upper support roller 20 is supported on the closing guide 29.
  • the closing guide 29 and the outer guide rail 35 are only present in the mold area.
  • the inner guide rail 34 is arranged in connection with an adjustment section (not shown) with respect to the stationary mold part 6a and the endless chain 5 such that the mold part 6b shifted to the right via the support roller 21 releases the mold space 7 and thereby enables the strand produced to be transported away (FIG. 9).
  • the guide rail 35 shown in FIG. 8 also has an adjustment section in the area in front of the mold space, by means of which the movable mold part 6b is moved back into the closed position (shown in FIG. 8) as the mold part pair 6 approaches the mold space. Due to the equipment with a straight guide in the embodiment in question, the width of the mold space can be easily adapted to the shrinking processes that occur during the solidification of the liquid metal Go mold room 7 in front of you.
  • the advantage achieved by the invention is, in particular, that by using two interacting mold parts, an externally sealed mold space section can be produced, the cross-section of which can be changed in one direction by shifting the mold parts lying closely against one another.
  • the mold part pairs forming the mold space run around on a single support element in the form of an endless chain. Since the angled mold wall sections are detachably fastened in the easily accessible mold parts, individual mold wall sections can be exchanged without difficulty or, if necessary, the casting device can also be equipped with mold wall sections which limit a mold space with a different cross section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A metal casting device employs a number of pairs of mold members which can be opened or closed with respect to each other. The mold chamber pairs cooperate, in their closed state, to form a linear mold chamber. In order to compensate for shrinkage as the metal cools, the mold member pairs are movably supported by an endless chain, with the pairs of cooperating mold members being provided with contact faces having the same angle of inclination. Each mold member pair is also equipped with supporting rollers with which the associated mold chamber section can be closed or opened, as required.

Description

Die Erfindung betrifft eine Gießvorrichtung für Metalle mit einem kontinuierlich umlaufenden Tragelement, an dem in Umlaufrichtung aufeinanderfolgend eine Vielzahl paarweise gegeneinander beweglicher, miteinander jeweils Kokillenraumabschnitte darstellende Kokillenteile mitführbar ist, und mit Verstellelementen, mittels der der Kokillenraum - welcher auf einem Teilstück des Tragelement-Umlaufweges jeweils von einem Teil der dabei auch in Umlaufrichtung aneinander anliegenden Kokillenteil-Paare gebildet ist - im Bereich der Metallzuführung geschlossen und - in Umlaufrichtung gesehen - in einem vorgegebenen Abstand dazu geöffnet werden kann.The invention relates to a casting device for metals with a continuously rotating support element, on which a plurality of mold parts movable in pairs in relation to one another, each showing mold space sections, can be carried, and with adjusting elements by means of which the mold space - which is located on a section of the support element circulation path is formed by a part of the mold part pairs which also abut one another in the circumferential direction - closed in the area of the metal feed and - seen in the circumferential direction - can be opened at a predetermined distance from it.

Hohe Gießgeschwindigkeiten (bis zu 10 m/min) lassen sich mit Gießvorrichtungen erzielen, die vor allem als Doppelbandgießmaschine oder als Gießrad ausgebildet sind.
Die Doppelbandgießmaschine weist einen geradlinigen Kokillenraum auf, aus dem das Gießerzeugnis ohne ungünstige Verformung austreten kann und dessen Länge die Maschinenbauhöhe nicht oder allenfalls unwesentlich beeinflußt. Der Nachteil dieser bekannten Gießvorrichtung besteht darin, daß sie technisch aufwendig ist und sich unter Umständen in den Fällen nicht wirtschaftlich einsetzen läßt, in denen verhältnismäßig geringe Gießleistungen gefordert sind.
Gießvorrichtungen in Form von Gießrädern sind demgegenüber verhältnismäßig einfach aufgebaut, weisen jedoch insbesondere den Nachteil auf, daß die durch die metallurgischen Verhältnisse vorgegebene Länge des Kokillenraums einen großen Raddurchmesser mit entsprechender Maschinenbauhöhe zur Folge hat. Bedingt durch die Krümmung des Kokillenraums unterliegt der Strang einer ungünstigen Biegebeanspruchung. Darüber hinaus läßt sich eine ungleichmäßige Kühlung des sich bildenden Strangs an dessen Ober- und Unterseite nicht vermeiden.High casting speeds (up to 10 m / min) can be achieved with casting devices which are designed primarily as a double belt casting machine or as a casting wheel.
The double belt casting machine has a rectilinear mold space from which the cast product can emerge without unfavorable deformation and the length of which does not, or at most insignificantly, affect the machine height. The disadvantage of this known casting device is that it is technically complex and under certain circumstances cannot be used economically in cases in which relatively low casting rates are required.
Pouring devices in the form of casting wheels, on the other hand, are relatively simple in construction, but have the disadvantage, in particular, that the length of the mold space, which is predetermined by the metallurgical conditions, results in a large wheel diameter with a corresponding machine height. Due to the curvature of the mold space, the strand is subject to an unfavorable bending stress. In addition, an uneven cooling of the strand being formed on the top and bottom cannot be avoided.

Aus der DE-A1-33 21 941 ist eine Gießvorrichtung der eingangs erwähnten Gattung in Form eines Gießrades bekannt, dessen Kokillenraum einerseits von dem Radkranz und andererseits von schwenkbar gehaltenen Kokillenhälften begrenzt ist. Diese lassen sich mittels Zylindern in eine Schließstellung bringen, in welcher sie den Kokillenraum nach außen abdichten, oder durch Wegschwenken vom Radkranz in eine Öffnungsstellung verfahren, welche den Abtransport des Strangs aus dem Bereich des Gießrades ermöglicht. Die beiden Berührungsflächen, über welche sich die Kokillenteil-Paare der hier angesprochenen Ausführungsform aneinander abstützen, verlaufen senkrecht zueinander; der Querschnitt des Kokillenraums läßt sich daher nicht an die bei der Erstarrung des flüssigen Metalls vor sich gehenden Schrumpfungsvorgänge anpassen.From DE-A1-33 21 941 a casting device of the type mentioned in the form of a casting wheel is known, the mold space of which is delimited on the one hand by the wheel rim and on the other hand by swiveling mold halves. These can be brought into a closed position by means of cylinders, in which they seal the mold space to the outside, or can be moved into an open position by pivoting away from the wheel rim, which enables the strand to be transported away from the area of the casting wheel. The two contact surfaces, by means of which the mold part pairs of the embodiment mentioned here are supported on one another, run perpendicular to one another; the cross section of the mold space cannot therefore be adapted to the shrinkage processes taking place during the solidification of the liquid metal.

Die DE-C3-21 09 254 beschreibt eine Gießvorrichtung mit einer Raupenkokille, die von zwei im Kokillenraumbereich zusammenwirkenden, umlaufenden Raupenketten gebildet ist. Auch diese bekannte Gießvorrichtung läßt keine Anpassung des Kokillenraumquerschnitts an die bereits erwähnten Schrumpfungsvorgänge zu.DE-C3-21 09 254 describes a casting device with a caterpillar mold, which is formed by two rotating caterpillar chains interacting in the mold space area. This known casting device also does not allow the mold space cross section to be adapted to the shrinking processes already mentioned.

Der Erfindung liegt die Aufgabe zugrunde, eine Gießvorrichtung mit vertretbarem technischem Aufwand in der Weise auszugestalten, daß sie einen geradlinigen Kokillenraum aufweist; dieser soll in der Weise ausgestaltet sein, daß sich die erstarrungsbedingten Schrumpfungsvorgänge zumindest teilweise ausgleichen lassen.The invention has for its object to design a casting device with reasonable technical effort in such a way that it has a straight mold room; this should be designed in such a way that the solidification-related shrinkage processes can be at least partially compensated for.

Die gestellte Aufgabe wird durch eine Gießvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Der Grundgedanke der Erfindung besteht danach in der Verwendung einer über Kettenräder ovalförmig verlaufenden Endloskette mit gegeneinander beweglichen Kokillenteil-Paaren, die über geeignet ausgerichtete Stützrollen zumindest im Kokillenraumbereich geführt sind und miteinander zeitweilig jeweils einen Kokillenraumabschnitt bilden. Durch Zusammenwirken mehrerer in Umlaufrichtung aufeinanderfolgender Kokillenteil-Paare entsteht in einem Bereich, in dem die Endloskette geradlinig verläuft, ein ununterbrochener Kokillenraum; dessen Länge ist festgelegt durch die Anzahl Kokillenteil-Paare, deren Kokillenteile (zwischen dem Metallzuführungsbereich und dem Kokillenraumende) die Schließstellung einnehmen. Eine Veränderung des Kokillenraum-Querschnitts zur Anpassung an Schrumpfungsvorgänge wird dabei dadurch ermöglicht, daß sämtliche Berührungsflächen, über welche die Kokillenteile jedes Kokillenteil-Paares aneinander abstützbar sind, bezüglich einer Bezugsebene (bei einer waagerechten Anordnung des Kokillenraums beispielsweise bezüglich einer Horizontal-Ebene durch die Kokillenraum-Längsachse) denselben Neigungswinkel aufweisen und sich wechselweise in der Schließstellung überlappen; der übereinstimmende Neigungswinkel kann dabei insbesondere auch 0° betragen.The object is achieved by a casting device with the features of claim 1. The basic idea of the invention then consists in the use of an endless chain running oval with chain wheels and pairs of mold parts that are movable relative to one another, which are guided over suitably aligned support rollers at least in the mold space area and each temporarily form a mold space section with one another. The interaction of several pairs of mold parts that follow one another in the circumferential direction creates an uninterrupted mold space in an area in which the endless chain runs in a straight line; the length of which is determined by the number of pairs of mold parts whose mold parts (between the metal feed area and the mold space end) assume the closed position. A change in the mold space cross-section to adapt to Shrinkage processes are made possible by the fact that all contact surfaces, via which the mold parts of each mold part pair can be supported against each other, have the same angle of inclination with respect to a reference plane (with a horizontal arrangement of the mold space, for example, with respect to a horizontal plane through the mold space longitudinal axis) and are alternating overlap in the closed position; the corresponding angle of inclination can in particular also be 0 °.

Die Neigung des sich zwischen den Kettenrädern erstreckenden Kokillenraums kann beliebig sein, d.h. er kann waagerecht, geneigt oder auch senkrecht angeordnet sein. Wesentlich im Hinblick auf den gewünschten Schrumpfungsausgleich ist eine derartige Ausbildung und Zuordnung der jeweils paarweise zusammenwirkenden Kokillenteile, daß diese - in der Schließstellung dicht aneinander anliegend - senkrecht zur Kokillenraumlängsachse (und damit zur Umlaufrichtung im Bereich des Kokillenraums) gegeneinander verschoben werden können. Vorzugsweise sind die Berührungsflächen zwischen den Kokillenteilen jedes Kokillenteil-Paares in der Weise ausgerichtet, daß eine Verschiebung quer zur Kokillenraumlängsachse keine Veränderung der Höhenabmessung der Kokillenteil-Paare nach sich zieht. Falls also beispielsweise die Gießvorrichtung einen im Querschnitt rechteckförmigen Kokillenraum aufweist, verlaufen die Berührungsflächen der zusammenwirkenden Kokillenteile parallel zu dessen Ober- bzw. Unterwand. Jedes Kokillenteil trägt dementsprechend einen Kokillenwandabschnitt, der - senkrecht zur Kokillenraumlängsachse gesehen - ­winkelförmig ausgebildet ist (Anspruch 2). Falls also beispielsweise ein Kokillenteil die Unterwand und linke Seitenwand des betreffenden Kokillenraumabschnitts bildet, umfaßt das zugehörige zweite Kokillenteil einen Abschnitt der Oberwand und rechten Seitenwand des Kokillenraums.The inclination of the mold space extending between the chain wheels can be arbitrary, ie it can be arranged horizontally, inclined or also vertically. With regard to the desired shrinkage compensation, it is essential to design and assign the mold parts interacting in pairs in such a way that they can be moved against one another perpendicular to the longitudinal axis of the mold space (and thus to the direction of rotation in the area of the mold space) in the closed position. The contact surfaces between the mold parts of each mold part pair are preferably aligned in such a way that a displacement transversely to the longitudinal axis of the mold space does not result in a change in the height dimension of the mold part pairs. If, for example, the casting device has a mold space that is rectangular in cross section, the contact surfaces of the interacting mold parts run parallel to its upper or lower wall. Accordingly, each mold part carries a mold wall section that - Seen perpendicular to the longitudinal axis of the mold - is angled (claim 2). If, for example, one mold part forms the lower wall and left side wall of the relevant mold space section, the associated second mold part comprises a section of the upper wall and right side wall of the mold space.

Um sicherzustellen, daß die Endloskette über die Länge des Kokillenraums eine möglichst gleichbleibende, wiederholbare Lage einnimmt, ist die Endloskette mit Wälzlagern ausgerüstet, die sich zumindest im Kokillenraumbereich auf einer Führungsbahn abstützen (Anspruch 3). Vorzugsweise ist die Verbindung zwischen den Kokillenteil-Paaren und der Endloskette in der Weise ausgestaltet, daß jedem Kokillenteil-Paar an der Endloskette zwei in Umlaufrichtung aufeinanderfolgende Wälzlager-Paare zugeordnet sind (Anspruch 4); zwei benachbarte Kokillenteil-Paare weisen also an der Endloskette jeweils ein gemeinsames Wälzlager-Paar auf.In order to ensure that the endless chain occupies a position that is as constant and repeatable as possible over the length of the mold space, the endless chain is equipped with roller bearings that are supported at least in the mold space area on a guideway (claim 3). The connection between the pairs of mold parts and the endless chain is preferably designed in such a way that each pair of mold parts on the endless chain is assigned two pairs of rolling bearings which follow one another in the circumferential direction (claim 4); Two adjacent pairs of mold parts therefore each have a common pair of roller bearings on the endless chain.

Der Erfindungsgegenstand ist weiterhin dadurch gekennzeichnet, daß jeweils das Kokillenteil jedes Kokillenteil-Paares, welches den bezüglich der Endloskette außenliegenden Kokillenwandabschnitt trägt, bezüglich der Endloskette beweglich ist (Anspruch 5); falls also der Kokillenraum oberhalb der Endloskette liegend waagerecht oder in Umlaufrichtung mit leichter Neigung verläuft, ist jeweils das oben liegende Kokillenteil bezüglich der Endloskette beweglich gehalten, während das untere Kokillenteil bezüglich dieser einen stationären Bestandteil darstellt.
Zur Lagesicherung zumindest im Bereich des Kokillenraums ist das bezüglich der Endloskette bewegliche Kokillenteil jedes Kokillenteil-Paares jeweils mit zwei Stützrollen ausgestattet (Anspruch 6). Erforderlichenfalls kann auch das bezüglich der Endloskette stationäre Kokillenteil mit einer Stützrolle ausgestattet sein, die einer der Stützrollen des beweglichen Kokillenteils bezüglich des Kokillenraums gegenüberliegt (Anspruch 8).The subject of the invention is further characterized in that in each case the mold part of each mold part pair, which carries the mold wall section lying outside with respect to the endless chain, is movable with respect to the endless chain (claim 5); if the mold space lies horizontally above the endless chain or runs slightly inclined in the direction of rotation, the upper part of the mold is held movable with respect to the endless chain, while the lower part of the mold is a stationary part with respect to it.
To secure the position at least in the area of The mold part of each mold part pair, which is movable with respect to the endless chain, is equipped with two support rollers (claim 6). If necessary, the mold part stationary with respect to the endless chain can also be equipped with a support roller which is opposite one of the support rollers of the movable mold part with respect to the mold space (claim 8).

Die zum Freisetzen des Strangs erforderliche Beweglichkeit jeweils eines Kokillenteils läßt sich mittels einer Geradführung verwirklichen, an der das bewegliche Kokillenteil bezüglich des stationären Kokillenteils quer zur Kokillenraumlängsachse verschiebbar gehalten ist (Anspruch 8); bei einer besonders einfachen Ausführungsform des Erfindungsgegenstandes besteht die Geradführung jeweils aus einer an der Endloskette gehaltenen Führungsstange, an der entlang das bewegliche Kokillenteil in die Schließstellung bzw. in eine Öffnungsstellung verfahren werden kann. Eine derartige Geradführung weist den Vorteil auf, daß die zusammenwirkenden Kokillenteile auch in der Schließstellung geradlinig gegeneinander bewegt werden können, um den bereits erwähnten Schrumpfungsausgleich zu ermöglichen.
Jedes Kokillenteil-Paar kann jedoch auch mit einer Drehverbindung ausgestattet sein, über welche das bewegliche Kokillenteil bezüglich des stationären Kokillenteils schwenkbar gehalten ist (Anspruch 9). Die Drehverbindung sollte dabei ein Spiel aufweisen, welches eine der Metallschrumpfung entsprechende Ausgleichsbewegung der aneinander anliegenden Kokillenteile mit gegenseitiger Annäherung zweier sich gegenüberliegender Kokillenwandabschnitte zuläßt (Anspruch 10); eine derartige Drehverbindung läßt sich beispielsweise dadurch verwirklichen, daß die zugehörige Drehachse auch in Querrichtung in ausreichendem Umfang verschiebbar gelagert ist.
Falls die Kokillenteil-Paare mit einer Drehverbindung ausgestattet sind, kann der Öffnungshub am Kokillenraumende durch ein Federelement bewirkt werden, über welches das bewegliche Kokillenteil in die Öffnungsstellung schwenkbar ist (Anspruch 11).
Vorzugsweise liegt jedes bewegliche Kokillenteil über eine seiner Stützrollen wechselweise an einer Schließführung und einer Öffnungsführung an, die einen eine Schließ- oder Öffnungsbewegung verursachenden Verstellabschnitt aufweist (Anspruch 12); zumindest die Schließführung, zweckmäßigerweise jedoch auch die Öffnungsführung, ist im Anschluß an ihren Verstellabschnitt so ausgebildet, daß das bewegliche Kokillenteil über die Länge des Kokillenraums bzw. bis zur Annäherung an den Verstellabschnitt der Schließführung vor dem Kokillenraum in der Schließstellung bzw. Öffnungsstellung verbleibt.The mobility of each mold part required to release the strand can be achieved by means of a straight guide on which the movable mold part is held so as to be displaceable transversely to the longitudinal axis of the mold space with respect to the stationary mold part (claim 8); In a particularly simple embodiment of the subject matter of the invention, the straight guide consists in each case of a guide rod held on the endless chain, along which the movable mold part can be moved into the closed position or into an open position. Such a straight guide has the advantage that the interacting mold parts can also be moved in a straight line against one another in the closed position in order to enable the shrinkage compensation already mentioned.
However, each mold part pair can also be equipped with a rotary connection, via which the movable mold part is held pivotably with respect to the stationary mold part (claim 9). The slewing ring should have a play which compensates for the compensating movement of the mold parts resting against one another with the metal shrinkage Approaching two opposing mold wall sections allows (claim 10); Such a rotary connection can be realized, for example, in that the associated rotary axis is also displaceable to a sufficient extent in the transverse direction.
If the mold part pairs are equipped with a rotary connection, the opening stroke at the end of the mold space can be effected by a spring element, via which the movable mold part can be pivoted into the open position (claim 11).
Each movable mold part preferably lies alternately on one of its support rollers against a closing guide and an opening guide which has an adjustment section which causes a closing or opening movement (claim 12); at least the closing guide, but expediently also the opening guide, is designed in connection with its adjustment section in such a way that the movable mold part remains in the closed position or open position over the length of the mold space or up to the adjustment section of the closing guide in front of the mold space.

Die Erfindung wird nachfolgend anhand der Zeichnung im einzelnen erläutert, in welcher stark schematisiert mehrere Ausführungsbeispiele dargestellt sind. Es zeigen:

  • Fig. 1 eine Teilseitenansicht einer erfindungsgemäßen Gießvorrichtung im Bereich der Metallzuführung und des vorderen, angetriebenen Kettenrades,
  • Fig. 2 eine Teilseitenansicht der Gießvorrichtung nach Fig. 1 im Bereich des Kokillenraumendes und des hinteren Kettenrades,
  • Fig. 3 eine Teildraufsicht auf die erfindungsgemäße Gießvorrichtung im Bereich der Metallzuführung,
  • Fig. 4 eine Teildraufsicht auf die erfindungsgemäße Gießvorrichtung im Bereich des Kokillenraumendes,
  • Fig. 5 einen Teilschnitt nach Linie V - V durch ein in der Schließstellung befindliches Kokillenteil-Paar, dessen bewegliches Kokillenteil über eine Drehverbindung gehalten ist,
  • Fig. 6 einen Teilschnitt durch das Kokillenteil-Paar nach Fig. 5 in der Öffnungsstellung,
  • Fig. 7 einen Teilschnitt durch ein die Schließstellung einnehmendes Kokillenteil-Paar mit einer Drehverbindung nach Fig. 5 und einer Öffnungsfeder,
  • Fig. 8 einen Teilschnitt durch ein die Schließstellung einnehmendes Kokillenteil-Paar mit einer das bewegliche Kokillenteil abstützenden Geradführung und
  • Fig. 9 einen Teilschnitt durch die Ausführungsform nach Fig. 8 in der Öffnungsstellung.
The invention is explained in detail below with reference to the drawing, in which several exemplary embodiments are shown in a highly schematic manner. Show it:
  • Fig. 1 is a partial side view of a casting device according to the invention in the area of the metal feed and front driven sprocket,
  • 2 shows a partial side view of the casting device according to FIG. 1 in the area of the mold cavity end and the rear sprocket,
  • 3 shows a partial top view of the casting device according to the invention in the area of the metal feed,
  • 4 shows a partial top view of the casting device according to the invention in the region of the mold space end,
  • 5 shows a partial section along line V - V through a pair of mold parts located in the closed position, the movable mold part of which is held via a rotary connection,
  • 6 shows a partial section through the mold part pair according to FIG. 5 in the open position,
  • 7 shows a partial section through a mold part pair which occupies the closed position with a rotary connection according to FIG. 5 and an opening spring,
  • Fig. 8 is a partial section through a mold part occupying the closed position with a straight guide supporting the movable mold part and
  • Fig. 9 is a partial section through the embodiment of FIG. 8 in the open position.

Die erfindungsgemäße Gießvorrichtung weist zwei an einem Rahmen 1 gelagerte Kettenräder 2 und 3 mit einer ortsfesten Drehachse 2a bzw. 3a auf, an denen sich in Richtung des Pfeiles 4 umlaufend eine Endloskette 5 abstützt. Diese trägt auf ihrer nach außen gerichteten Seite in Umlaufrichtung aufeinanderfolgend eine Vielzahl von Kokillenteil-Paaren 6, deren gegeneinander bewegliche Bestandteile (vgl. dazu beispielsweise Fig. 5 und 6) miteinander einen Kokillenraumabschnitt mit der Länge a begrenzen können. Bei der dargestellten Ausführungsform verläuft der Kokillenraum 7 mit der waagerechten Kokillenraumlängsachse 7a (vgl. dazu beispielsweise Fig. 5) oberhalb der Endloskette; seine Länge ist geringfügig kleiner als der gegenseitige Abstand der Drehachsen 2a und 3a der Kettenräder 2, 3. Das zu verarbeitende Metall wird dem Kokillenraum oberhalb des vorderen Kettenrades 2 in flüssigem Zustand durch eine nicht dargestellte Gießrinne oder geschlossene Gießdüse aus Feuerfestkeramik zugeführt, erstarrt im Bereich des Kokillenraums unter Bildung einer Strangschale mit in Umlaufrichtung (Pfeil 4) zunehmender Strangschale und verläßt den Kokillenraum im Bereich oberhalb des hinteren Kettenrades 3 als teilweise verfestigter Strang 8 in Richtung des Pfeiles 9 (vgl. Fig. 2).
Die Länge des Kokillenraums - und dementsprechend die Anzahl der bei seiner Bildung zusammenwirkenden, zumindest im Kokillenraumbereich gekühlten Kokillenteil-Paare 6 - ist so bemessen, daß der Strang 8 am Kokillenraumende 7b bereits eine ausreichend tragfähige Strangschale aufweist.The casting device according to the invention has two chain wheels 2 and 3 mounted on a frame 1 with a fixed axis of rotation 2a and 3a, on which an endless chain 5 is supported in the direction of arrow 4. On its outward-facing side in the circumferential direction, this carries a plurality of mold part pairs 6, the components of which can move relative to one another (cf. for example FIGS. 5 and 6) with one another can delimit a mold space section with length a. In the embodiment shown, the mold space 7 runs with the horizontal mold space longitudinal axis 7a (see, for example, FIG. 5) above the endless chain; its length is slightly less than the mutual distance between the axes of rotation 2a and 3a of the sprockets 2, 3. The metal to be processed is fed to the mold space above the front sprocket 2 in the liquid state through a not shown pouring channel or closed pouring nozzle made of refractory ceramics, solidifies in the area of the mold space to form a strand shell with the strand shell increasing in the direction of rotation (arrow 4) and leaves the mold space in the area above of the rear sprocket 3 as a partially solidified strand 8 in the direction of arrow 9 (see FIG. 2).
The length of the mold space - and accordingly the number of mold part pairs 6 which cooperate during its formation and are cooled at least in the mold space area - is dimensioned such that the strand 8 at the mold space end 7b already has a sufficiently stable strand shell.

Das vordere Kettenrad 2 stützt sich über Lager 10 am Rahmen 1 ab und steht über eine Kupplung 11 mit einem nicht dargestellten Antriebsmotor in Verbindung; das hintere Kettenrad 3 ist über Lager 12 am Rahmen 1 gehalten.
Die oberhalb der Kettenräder 2, 3 im Kokillenraumbereich zusammenwirkenden Kokillenteil-Paare 6 liegen über ihre einander zugewandten, in Umlaufrichtung angeordneten Stirnflächen 13 aneinander an, bilden also in dem Bereich, in dem die Endloskette 5 geradlinig verläuft, einen ununterbrochenen Kokillenraum ausreichender Länge.The front sprocket 2 is supported on the frame 1 via bearings 10 and is connected via a clutch 11 to a drive motor, not shown; the rear sprocket 3 is held on the frame 1 via bearing 12.
The mold part pairs 6 which cooperate above the sprockets 2, 3 in the mold space area rest against one another via their mutually facing end surfaces 13 arranged in the circumferential direction, thus forming an uninterrupted mold space of sufficient length in the area in which the endless chain 5 runs in a straight line.

Die Endloskette 5 setzt sich aus paarweise zusammenwirkenden Winkelstegen 14 zusammen, die sich an Kettenbolzen 15 abstützen und an denen jeweils ein Kokillenteil-Paar 6 (vgl. dazu beispielsweise Fig. 5) befestigt ist. Jeder Kettenbolzen ist seitlich mit zwei Wälzlagern 16 ausgestattet, über welche sich die Endloskette im Kokillenraumbereich auf einer geradlinigen Führungsbahn abstützt; diese besteht aus zwei am Rahmen 1 befestigten Kettenschienen 17.
Wie insbesondere die Fig. 1 erkennen läßt, stützen sich die Winkelstege 14 jedes Kokillenteil-Paares 6 jeweils an zwei Kettenbolzen 15 ab, also nicht nur an dem Kettenbolzen unterhalb des betreffenden Kokillenteil-Paares, sondern auch an dem in Umlaufrichtung (Pfeil 4) vorausgehenden Kettenbolzen. Die Kettenschienen 17 stellen sicher, daß die in ihrem Bereich befindlichen Kokillenteil-Paare sich lediglich geradlinig bewegen können.The endless chain 5 is composed of paired angular webs 14 which are supported on chain pins 15 and to which a pair of mold parts 6 (see, for example, FIG. 5) is attached. Each chain pin is laterally equipped with two roller bearings 16, by means of which the endless chain is supported on a straight guide path in the mold area; this consists of two chain rails 17 fastened to the frame 1.
As can be seen in particular in FIG. 1, support the angle webs 14 of each mold part pair 6 each on two chain pins 15, so not only on the chain pin below the mold part pair in question, but also on the chain pin preceding in the direction of rotation (arrow 4). The chain rails 17 ensure that the mold part pairs located in their area can only move in a straight line.

Jedes Kokillenteil-Paar 6 weist zwei gegeneinander bewegliche, Konsolen bildende Kokillenteile 6a und 6b auf, an denen jeweils ein abgewinkelter Kokillenwandabschnitt 6c bzw. 6d - bestehend aus einer warmfesten Kupferlegierung - über eine Klemmbacke 18 beispielsweise mittels Klemmschrauben lösbar gehalten ist (vgl. beispielsweise Fig. 5). Die Berührungsflächen 6e und 6f, über welche sich die Kokillenwandabschnitte 6c und 6d aneinander abstützen können, sind bezüglich einer gemeinsamen Bezugsebene - beispielsweise bezüglich der in Fig. 5 angedeuteten Horizontalebene 7c durch die Kokillenraumlängsachse 7a - unter demselben Neigungswinkel ausgerichtet; dieser beträgt bei den dargestellten Ausführungsbeispielen 0°.
Die gleichwinklige Ausrichtung der Berührungsflächen 6e und 6f gestattet es, die dicht aneinander anliegenden Kokillenwandabschnitte 6c und 6d seitlich gegeneinander zu verschieben und damit unter dem Gesichtspunkt des Schrumpfungsausgleichs die Breite des Kokillenraums 7 zu verändern.
Die Kokillenteil-Paare sind in Normalfall im Kokillenraumbereich luftgekühlt, das heißt ihre Kokillenwandabschnitte 6c, 6d weisen keine Wärmeisolierung auf. Zur Absenkung der Temperatur in den Kokillenteil-Paaren ist die Gießvorrichtung - vorzugsweise außerhalb des Kokillenraumbereichs zwischen den Kettenrädern - mit einer Kühleinheit ausgestattet. Über diese wird den vorbeilaufenden Kokillenteil-Paaren ein gasförmiges oder flüssiges Kühlmittel zugeführt.Each pair of mold parts 6 has two mold parts 6a and 6b which are movable relative to one another and form consoles, on each of which an angled mold wall section 6c or 6d - consisting of a heat-resistant copper alloy - is detachably held by means of a clamping jaw 18, for example by means of clamping screws (see, for example, Fig 5). The contact surfaces 6e and 6f, by means of which the mold wall sections 6c and 6d can be supported against one another, are oriented at the same angle of inclination with respect to a common reference plane - for example with respect to the horizontal plane 7c indicated in FIG. 5 through the longitudinal axis 7a of the mold space; this is 0 ° in the illustrated exemplary embodiments.
The equiangular orientation of the contact surfaces 6e and 6f allows the mold wall sections 6c and 6d, which lie closely against one another, to be laterally displaced relative to one another and thus to change the width of the mold space 7 from the point of view of shrinkage compensation.
The mold part pairs are normally air-cooled in the mold space area, that is to say their mold wall sections 6c, 6d have none Thermal insulation. To lower the temperature in the mold part pairs, the casting device is equipped with a cooling unit, preferably outside the mold space area between the chain wheels. A gaseous or liquid coolant is supplied to the pairs of mold parts passing by.

Bei den in Fig. 5 bis 7 dargestellten Ausführungsformen des Erfindungsgegenstandes sind die Kokillenteile 6a, 6b jedes Kokillenteil-Paares 6 (vgl. dazu Fig. 1) über eine Drehverbindung 19 mit einem Gelenkbolzen 19a beweglich aneinander befestigt, der über zwei Halteplatten 19b und über ein dazwischenliegendes Gegenlager 19c unbeweglich mit dem Kokillenteil 6b bzw. beweglich mit dem Kokillenteil 6a in Verbindung steht. Das Gegenlager 19c stützt sich mit einem Spiel s an dem Gelenkbolzen 19a ab, so daß die paarweise zusammenwirkenden Kokillenteile und die zugehörigen Kokillenwandabschnitte 6c, 6d auch in der in Fig. 5 dargestellten Schließstellung seitlich gegeneinander verschoben werden können.In the embodiments of the subject matter shown in FIGS. 5 to 7, the mold parts 6a, 6b of each mold part pair 6 (cf. FIG. 1) are movably attached to one another via a rotary connection 19 with a hinge pin 19a which is connected via two holding plates 19b and an intermediate counter bearing 19c is immovably connected to the mold part 6b or movably to the mold part 6a. The counter bearing 19c is supported with a play s on the hinge pin 19a, so that the mold parts interacting in pairs and the associated mold wall sections 6c, 6d can also be laterally displaced in the closed position shown in FIG. 5.

Jedes bewegliche Kokillenteil 6b ist dabei mit einer oberen Stützrolle 20 sowie einer dazu senkrecht angeordneten seitlichen Stützrolle 21 und jedes bezüglich der Endloskette 5 stationäre Kokillenteil 6a mit einer seitlichen Stützrolle 22 ausgerüstet; letztere liegt der Stützrolle 21 bezüglich des Kokillenraums 7 gegenüber.
Die erwähnten seitlichen Stützrollen wälzen sich jeweils an einem Führungslineal 23 bzw. 24 ab, welches gelenkig an einem Verstellbolzen 25 bzw. 26 gehalten ist und auf einer am Rahmen 1 befestigten Haltefläche 27 bzw. 28 ruht.Each movable mold part 6b is equipped with an upper support roller 20 and a lateral support roller 21 arranged perpendicular thereto, and each mold part 6a stationary with respect to the endless chain 5 is equipped with a side support roller 22; the latter lies opposite the support roller 21 with respect to the mold space 7.
The mentioned lateral support rollers each roll on a guide ruler 23 or 24 which is articulated on an adjusting bolt 25 or 26 and rests on a holding surface 27 or 28 fastened to the frame 1.

Die den Kokillenraum 7 bildenden Kokillenteil-Paare werden dadurch in der Schließstellung gehalten (in welcher die Kokillenwandabschnitte 6c und 6d über ihre Berührungsflächen 6e und 6f aneinander anliegen), daß die obere Stützrolle 20 sich von unten an einer bezüglich des Rahmens 1 ortsfesten Schließführung 29 abstützt; deren Länge stimmt in etwa mit der Länge des Kokillenraums überein, d.h. sie ist geringfügig kürzer als der bereits erwähnte gegenseitige Abstand der Kettenradachsen 2a und 3a (vgl. dazu Fig. 1 und 2).
Außerhalb des Kokillenraumbereichs wälzt sich die Stützrolle 20 an einer ebenfalls ortsfesten Öffnungsführung 30 ab. Diese ist so beschaffen, daß das bewegliche Kokillenteil 6b im Anschluß an das Kokillenraumende im Uhrzeigersinn hochgeschwenkt und während der weiteren Umlaufbewegung in dieser Öffnungsstellung festgehalten wird (vgl. dazu Fig. 6).
Im Bereich vor dem Kokillenraum weist die Schließführung 29 einen Verstellabschnitt 29a auf, über welchen die Neigung der oberen Stützrolle 20 allmählich soweit vermindert wird, bis das Kokillenteil 6b wieder die in Fig. 5 dargestellte Schließstellung erreicht und beibehält.
Das Festhalten des Kokillenteils 6b in der in Fig. 6 angedeuteten Öffnungsstellung ist die Voraussetzung dafür, daß der ausreichend verfestigte Strang geradlinig aus dem Bereich der Gießvorrichtung abtransportiert und im Bereich vor dem Kokillenraum eine ortsfeste Metallzuführung angeordnet werden kann, deren Vorderabschnitt in den Kokillenraum hineinreicht. Da die Drehverbindung zwischen den Kokillenteilen jedes Kokillenteil-Paares 6 ein Spiel aufweist, können die im Kokillenraum vor sich gehenden Schrumpfungsvorgänge teilweise durch eine seitlich Verschiebung der Kokillenteile gegeneinander ausgeglichen werden; der Querschnittsverlauf des Kokillenraums läßt sich dabei durch die Lage der Führungslineale 23 und 24 (vgl. Fig. 5) verändern bzw. festlegen.
Die Verstellabschnitte 29a und 30a der Schließführung 29 bzw. der Öffnungsführung 30, in deren Bereich die Verstellung der Kokillenteil-Paare 6 in die Schließstellung bzw. in die Öffnungsstellung vor sich geht, sind in Fig. 3 bzw. 4 schematisch dargestellt.The mold part pairs forming the mold space 7 are held in the closed position (in which the mold wall sections 6c and 6d abut one another via their contact surfaces 6e and 6f) in that the upper support roller 20 is supported from below on a closing guide 29 which is stationary with respect to the frame 1 ; the length of which corresponds approximately to the length of the mold space, ie it is slightly shorter than the mutual distance between the sprocket axles 2a and 3a already mentioned (cf. FIGS. 1 and 2).
Outside the mold area, the support roller 20 rolls on a likewise fixed opening guide 30. This is such that the movable mold part 6b is swiveled clockwise following the end of the mold space and is held in this open position during the further orbital movement (cf. FIG. 6).
In the area in front of the mold space, the closing guide 29 has an adjustment section 29a, via which the inclination of the upper support roller 20 is gradually reduced until the mold part 6b again reaches and maintains the closed position shown in FIG. 5.
Holding the mold part 6b in the open position indicated in FIG. 6 is the prerequisite for the sufficiently solidified strand to be transported straight away from the area of the casting device and a stationary metal feed can be arranged in the area in front of the mold space, the front section of which extends into the mold space. Since the rotary connection between the mold parts of each mold part pair 6 has play, can the shrinking processes taking place in the mold cavity are partially compensated for by a lateral displacement of the mold parts; the cross-sectional profile of the mold space can be changed or determined by the position of the guide rulers 23 and 24 (cf. FIG. 5).
The adjustment sections 29a and 30a of the closing guide 29 and the opening guide 30, in the area of which the adjustment of the mold part pairs 6 into the closed position and into the open position are shown schematically in FIGS. 3 and 4, respectively.

Die in Fig. 7 dargestellte Ausführungsform des Erfindungsgegenstandes unterscheidet sich im wesentlichen nur dadurch von der zuvor beschriebenen Ausführungsform, daß die Drehverbindung 19 zwischen den Kokillenteilen 6b und 6a zusätzlich mit einem Federelement 31 in Form einer Drehfeder ausgestattet ist. Diese ist gleichzeitig mit den Teilen 19b und 19c verbunden und übt eine Rückstellkraft aus, durch welche das bewegliche Kokillenteil 6b im Uhrzeigersinn hochgeschwenkt wird, sobald sich die obere Stützrolle 20 - außerhalb des Kokillenraumbereichs - nicht mehr an der Schließführung 29 abstützt. Da die Kokillenteil-Paare 6 unter Einwirkung des Federelements 31 selbsttätig in die Öffnungsstellung bewegt werden, kann von der Verwendung einer Öffnungsführung abgesehen werden. Das Federelement ist so ausgebildet und/oder an den Teilen 19b und 19c gehalten, daß es eine Verschiebung der aneinanderliegenden Kokillenteile 6a und 6b in der Größenordnung von wenigen zehntel Millimetern nicht behindert. Der Gelenkbolzen 19a greift dabei mit einem ausreichend bemessenen Spiel s in das Gegenlager 19c des stationären Kokillenteils 6a ein.The embodiment of the subject matter of the invention shown in FIG. 7 essentially differs from the previously described embodiment only in that the rotary connection 19 between the mold parts 6b and 6a is additionally equipped with a spring element 31 in the form of a torsion spring. This is connected to the parts 19b and 19c at the same time and exerts a restoring force, by means of which the movable mold part 6b is pivoted upwards in a clockwise direction as soon as the upper support roller 20 is no longer supported on the closing guide 29 outside the mold space area. Since the mold part pairs 6 are automatically moved into the open position under the action of the spring element 31, the use of an opening guide can be dispensed with. The spring element is designed and / or held on the parts 19b and 19c in such a way that there is a displacement of the mold parts lying against one another 6a and 6b in the order of a few tenths of a millimeter not disabled. The hinge pin 19a engages with a sufficiently dimensioned play s in the counter bearing 19c of the stationary mold part 6a.

Im Rahmen der Erfindung kann das Federelement auch andersartig als dargestellt ausgebildet und angeordnet sein; insbesondere ist die Verwendung einer Druckfeder möglich, die sich an dem Gegenlager 19c zwischen dem Kokillenwandabschnitt 6d und der Stützrolle 21 an dem beweglichen Kokillenteil 6b abstützt.In the context of the invention, the spring element can also be designed and arranged differently than shown; in particular, the use of a compression spring is possible, which is supported on the counter bearing 19c between the mold wall section 6d and the support roller 21 on the movable mold part 6b.

Die Ausführungsform nach Fig. 8 und 9 unterscheidet sich im Grundsatz dadurch von den zuvor beschriebenen Ausführungsformen, daß das bewegliche Kokillenteil 6b jedes Kokillenteil-Paares 6 bezüglich des stationären Kokillenteiles 6a geradlinig verschiebbar ist und daß lediglich das bewegliche Kokillenteil mit senkrecht zueinander ausgerichteten Stützrollen 20, 21 ausgestattet ist.
Die Geradführung besteht aus einer an den Winkelstegen 14 der Endloskette 5 befestigten Führungsstange 32, die quer zur Kokillenraumlängsachse 7a ausgerichtet ist und an der sich das Kokillenteil 6b über Gleitbüchse 33 abstützt.The embodiment according to FIGS. 8 and 9 differs in principle from the previously described embodiments in that the movable mold part 6b of each mold part pair 6 can be displaced in a straight line with respect to the stationary mold part 6a and that only the movable mold part with support rollers 20 aligned perpendicular to one another, 21 is equipped.
The straight guide consists of a guide rod 32 fastened to the angular webs 14 of the endless chain 5, which is aligned transversely to the longitudinal axis 7a of the mold space and on which the mold part 6b is supported via a sliding bush 33.

Die Seitenlage des Kokillenteils 6b bezüglich des stationären Kokillenteils 6a und der Endloskette 5 wird dadurch festgelegt, daß sich die seitliche Stützrolle 21 über die Länge des Kokillenraums und mit engem Bewegungsspielraum zwischen einer inneren Führungsschiene 34 und einer äußeren Führungsschiene 35 gehalten ist. Beide Führungsschienen sind Bestandteil eines Führungskäfigs 36, der verschiebbar auf der Haltefläche 27 ruht und der über einen gelenkig angeschlossenen Verstellbolzen 37 in der gewünschten Lage feststellbar ist.
Die Abdichtung zwischen den Kokillenwandabschnitten 6c und 6d erfolgt in der bereits erwähnten Weise dadurch, daß sich die obere Stützrolle 20 an der Schließführung 29 abstützt.The lateral position of the mold part 6b with respect to the stationary mold part 6a and the endless chain 5 is determined in that the lateral support roller 21 extends over the length of the mold space and with a narrow range of motion between an inner one Guide rail 34 and an outer guide rail 35 is held. Both guide rails are part of a guide cage 36 which rests displaceably on the holding surface 27 and which can be locked in the desired position by means of an articulated adjustment bolt 37.
The sealing between the mold wall sections 6c and 6d takes place in the manner already mentioned in that the upper support roller 20 is supported on the closing guide 29.

Die Schließführung 29 und die äußere Führungsschiene 35 sind nur im Kokillenraumbereich vorhanden. Die innere Führungsschiene 34 ist im Anschluß an einen nicht dargestellten Verstellabschnitt bezüglich des stationären Kokillenteils 6a und der Endloskette 5 derart angeordnet, daß der über die Stützrolle 21 nach rechts verschobene Kokillenteil 6b den Kokillenraum 7 freigibt und dadurch den Abtransport des hergestellten Strangs ermöglicht (Fig. 9).
Die in Fig. 8 dargestellte Führungsschiene 35 weist im Bereich vor dem Kokillenraum ebenfalls einen Verstellabschnitt auf, über den das bewegliche Kokillenteil 6b mit der Annäherung des beteffenden Kokillenteil-Paares 6 an den Kokillenraum in die (in Fig. 8 dargestellte) Schließstellung zurückbewegt wird.
Bedingt durch die Ausstattung mit einer Geradführung läßt sich bei der in Rede stehenden Ausführungsform die Breite des Kokillenraums ohne weiteres an die Schrumpfungsvorgänge anpassen, die während der Erstarrung des flüssigen Metalls im Kokillenraum 7 vor sich gehen.The closing guide 29 and the outer guide rail 35 are only present in the mold area. The inner guide rail 34 is arranged in connection with an adjustment section (not shown) with respect to the stationary mold part 6a and the endless chain 5 such that the mold part 6b shifted to the right via the support roller 21 releases the mold space 7 and thereby enables the strand produced to be transported away (FIG. 9).
The guide rail 35 shown in FIG. 8 also has an adjustment section in the area in front of the mold space, by means of which the movable mold part 6b is moved back into the closed position (shown in FIG. 8) as the mold part pair 6 approaches the mold space.
Due to the equipment with a straight guide in the embodiment in question, the width of the mold space can be easily adapted to the shrinking processes that occur during the solidification of the liquid metal Go mold room 7 in front of you.

Der mit der Erfindung erzielte Vorteil besteht insbesondere darin, daß durch Verwendung zweier zusammenwirkender Kokillenteile ein nach außen hin abgedichteter Kokillenraumabschnitt hergestellt werden kann, dessen Querschnitt durch Verschiebung der dicht aneinanderliegenden Kokillenteile in einer Richtung verändert werden kann. Die den Kokillenraum bildenden Kokillenteil-Paare laufen dabei an einem einzigen Tragelement in Form einer Endloskette um.
Da die abgewinkelten Kokillenwandabschnitte lösbar in den gut zugänglichen Kokillenteilen befestigt sind, können einzelne Kokillenwandabschnitte ohne Schwierigkeit ausgewechselt bzw. kann die Gießvorrichtung erforderlichenfalls auch mit Kokillenwandabschnitten ausgestattet werden, die einen Kokillenraum mit einem andersartigen Querschnitt begrenzen.The advantage achieved by the invention is, in particular, that by using two interacting mold parts, an externally sealed mold space section can be produced, the cross-section of which can be changed in one direction by shifting the mold parts lying closely against one another. The mold part pairs forming the mold space run around on a single support element in the form of an endless chain.
Since the angled mold wall sections are detachably fastened in the easily accessible mold parts, individual mold wall sections can be exchanged without difficulty or, if necessary, the casting device can also be equipped with mold wall sections which limit a mold space with a different cross section.

Claims (12)

1. Gießvorrichtung für Metalle mit einem kontinuierlich umlaufenden Tragelement, an dem in Umlaufrichtung aufeinanderfolgend eine Vielzahl paarweise gegeneinander beweglicher, miteinander jeweils einen Kokillenraumabschnitt darstellende Kokillenteile mitführbar ist, und mit Verstellelementen, mittels der der Kokillenraum - welcher auf einem Teilstück des Tragelement-Umlaufweges jeweils von einem Teil der dabei auch in Umlaufrichtung aneinander anliegenden Kokillenteil-Paare gebildet ist - im Bereich der Metallzuführung geschlossen und - in Umlaufrichtung gesehen - in einem vorgegebenen Abstand dazu geöffnet werden kann,
gekennzeichnet durch folgende Merkmale:

- das Tragelement ist als Endloskette (5) ausgebildet, die sich im Bereich der Metallzuführung und des Kokillenraumendes (7b) an einem vorderen bzw. hinteren Kettenrad (2 bzw. 3) abstützt;
- sämtliche Berührungsflächen (6e, 6f), über welche die Kokillenteile (6a, 6b) jedes Kokillenteil-Paares (6) aneinander abstützbar sind, weisen bezüglich einer Bezugsebene (7c) denselben Neigungswinkel auf und überlappen sich in der Schließstellung wechselweise;
- jedes Kokillenteil-Paar (6) ist außerhalb der Endloskette (5) mit mehreren unterschiedlich ausgerichteten Stützrollen (20 bis 22) ausgestattet, die zumindest im Kokillenraumbereich an ortsfesten Führungen (23, 24, 29 bzw. 34, 35, 29) anliegend die zusammengehörigen Kokillenteile (6a, 6b) unter Bildung eines Kokillenraumabschnitts aneinander in Anlage halten.1.Casting device for metals with a continuously rotating support element, on which a plurality of mold parts movable in pairs in relation to one another, each representing a mold space section, can be carried, and with adjusting elements, by means of which the mold space - which is located on a section of the support element circulation path - each of a part of the mold part pairs which also abut one another in the circumferential direction - closed in the area of the metal feed and - seen in the circumferential direction - can be opened at a predetermined distance from it
characterized by the following features:

- The support element is designed as an endless chain (5), which is supported in the area of the metal feed and the mold cavity end (7b) on a front or rear sprocket (2 or 3);
- All contact surfaces (6e, 6f) over which the mold parts (6a, 6b) of each mold part pair (6) can be supported against one another have the same angle of inclination with respect to a reference plane (7c) and alternately overlap in the closed position;
- Each mold part pair (6) is equipped outside the endless chain (5) with several differently aligned support rollers (20 to 22), at least in Hold the mold space area against stationary guides (23, 24, 29 or 34, 35, 29) and hold the mold parts (6a, 6b) together, forming a mold space section. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jedes Kokillenteil (6a, 6b) einen Kokillenwandabschnitt (6c, 6d) trägt, der - senkrecht zur Kokillenraumlängsachse (7a) gesehen - winkelförmig ausgebildet ist.2. Apparatus according to claim 1, characterized in that each mold part (6a, 6b) carries a mold wall section (6c, 6d) which - seen perpendicular to the mold axis longitudinal axis (7a) - is angular. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Endloskette (5) mit Wälzlagern (16) ausgerüstet ist, die sich zumindest im Kokillenraumbereich auf einer Führungsbahn (17) abstützen.3. Apparatus according to claim 1 or 2, characterized in that the endless chain (5) is equipped with roller bearings (16) which are supported at least in the mold area on a guide track (17). 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jedem Kokillenteil-Paar (6) an der Endloskette (5) zwei aufeinanderfolgende Wälzlager-Paare (16) zugeordnet sind.4. The device according to claim 3, characterized in that each mold part pair (6) on the endless chain (5) are assigned two successive pairs of roller bearings (16). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeweils das Kokillenteil (6b) jedes Kokillenteil-Paares (6), welches den bezüglich der Endloskette (5) außenliegenden Kokillenwandabschnitt (6d) trägt, bezüglich der Endloskette beweglich ist.5. Device according to one of claims 1 to 4, characterized in that in each case the mold part (6b) of each mold part pair (6) which carries the mold wall section (6d) lying outside with respect to the endless chain (5) is movable with respect to the endless chain. 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das bezüglich der Endloskette (5) bewegliche Kokillenteil (6b) jedes Kokillenteil-Paares (6) jeweils mit zwei Stützrollen (20, 21) ausgestattet ist.6. Device according to one of claims 1 to 5, characterized in that with respect to the endless chain (5) movable mold part (6b) of each mold part pair (6) each with two Support rollers (20, 21) is equipped. 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das bezüglich der Endloskette stationäre Kokillenteil (6a) mit einer Stützrolle (22) ausgestattet ist, die einer der Stützrollen (21) des beweglichen Kokillenteils (6b) bezüglich des Kokillenraums (7) gegenüberliegt.7. The device according to claim 6, characterized in that the stationary mold part with respect to the endless chain (6a) is equipped with a support roller (22) which is opposite one of the support rollers (21) of the movable mold part (6b) with respect to the mold space (7). 8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß jedes Kokillenteil-Paar (6) mit einer Geradführung (32) ausgestattet ist, an der das bewegliche Kokillenteil (6b) bezüglich des stationären Kokillenteils (6a) quer zur Kokillenraumlängsachse (7a) verschiebbar gehalten ist.8. Device according to one of claims 1 to 6, characterized in that each mold part pair (6) is equipped with a straight guide (32) on which the movable mold part (6b) with respect to the stationary mold part (6a) transverse to the mold space longitudinal axis ( 7a) is held displaceably. 9. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß jedes Kokillenteil-Paar (6) mit einer Drehverbindung (19) ausgestattet ist, über welche das bewegliche Kokillenteil (6b) bezüglich des stationären Kokillenteils (6a) schwenkbar gehalten ist.9. Apparatus according to claim 6 or 7, characterized in that each mold part pair (6) is equipped with a rotary connection (19), via which the movable mold part (6b) is pivotally held with respect to the stationary mold part (6a). 10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Drehverbindung (19) ein Spiel (s) aufweist, welches eine der Metallschrumpfung entsprechende Ausgleichsbewegung der aneinander anliegenden Kokillenteile (6a, 6b) zuläßt.10. The device according to claim 9, characterized in that the rotary connection (19) has a game (s) which permits a compensating movement of the mold parts (6a, 6b) adjacent to one another corresponding to the metal shrinkage. 11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß jedes Kokillenteil-Paar (6) mit einem Federelement (31) ausgestattet ist, über welches das bewegliche Kokillenteil (6b) in die Öffnungsstellung schwenkbar ist.11. The device according to claim 9 or 10, characterized in that each mold part pair (6) is equipped with a spring element (31), via which the movable mold part (6b) can be pivoted into the open position. 12. Vorrichtung nach einem der Ansprü`che 6 bis 10, dadurch gekennzeichnet, daß jedes bewegliche Kokillenteil (6b) über eine seiner Stützrollen (20, 21) wechselweise an einer Schließführung (29 bzw. 35) und einer Öffnungsführung (30 bzw. 34) anliegt, die einen eine Schließ- oder Öffnungsbewegung verursachenden Verstellabschnitt (29a bzw. 30a) aufweisen.12. Device according to one of claims 6 to 10, characterized in that each movable mold part (6b) via one of its support rollers (20, 21) alternately on a closing guide (29 or 35) and an opening guide (30 or 34 ) which has an adjustment section (29a or 30a) causing a closing or opening movement.
EP86117792A 1986-12-19 1986-12-19 Casting apparatus for metals having an endless track-type supporting element Expired - Lifetime EP0271603B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP86117792A EP0271603B1 (en) 1986-12-19 1986-12-19 Casting apparatus for metals having an endless track-type supporting element
DE8686117792T DE3670967D1 (en) 1986-12-19 1986-12-19 Casting device for metals with a continuous rotating support element.
AT86117792T ATE52433T1 (en) 1986-12-19 1986-12-19 CASTING DEVICE FOR METALS WITH A CONTINUOUSLY REVOLVING SUPPORT ELEMENT.
ES86117792T ES2015527B3 (en) 1986-12-19 1986-12-19 METAL CASTING DEVICE WITH A CONTINUOUS ROTATING SUPPORT ELEMENT.
US07/130,106 US4770228A (en) 1986-12-19 1987-12-07 Metal casting device equipped with a continuously rotating supporting element
JP62319173A JPS63165048A (en) 1986-12-19 1987-12-18 Casting device for metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86117792A EP0271603B1 (en) 1986-12-19 1986-12-19 Casting apparatus for metals having an endless track-type supporting element

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EP0271603A1 true EP0271603A1 (en) 1988-06-22
EP0271603B1 EP0271603B1 (en) 1990-05-09

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EP86117792A Expired - Lifetime EP0271603B1 (en) 1986-12-19 1986-12-19 Casting apparatus for metals having an endless track-type supporting element

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US (1) US4770228A (en)
EP (1) EP0271603B1 (en)
JP (1) JPS63165048A (en)
AT (1) ATE52433T1 (en)
DE (1) DE3670967D1 (en)
ES (1) ES2015527B3 (en)

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US5645159A (en) * 1994-03-30 1997-07-08 Lauener Engineering, Ltd. Method and apparatus for continuously casting metal
US5620045A (en) * 1995-04-24 1997-04-15 Gerding; Charles C. Continuous casting mold formed of plate elements
US6041848A (en) * 1998-01-13 2000-03-28 Sms Concast Division Of Sms-Schloemann Siemag Inc. Adjustable continuous casting mold
US6857464B2 (en) * 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold

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US3384153A (en) * 1965-04-07 1968-05-21 Arnold H. Boehm Rotary type continuous casting machine
GB1235728A (en) * 1968-02-06 1971-06-16 Ceretti Ind Spa Continuous steel casting apparatus
FR2529116A1 (en) * 1982-06-23 1983-12-30 Ishikawajima Harima Heavy Ind METHOD AND DEVICE FOR PERFORMING HIGH-SPEED, HIGH-PERFORMANCE CONTINUOUS CASTING
EP0174922A1 (en) * 1984-09-10 1986-03-19 VOEST-ALPINE Aktiengesellschaft Continuous-casting mould

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Also Published As

Publication number Publication date
JPS63165048A (en) 1988-07-08
US4770228A (en) 1988-09-13
ATE52433T1 (en) 1990-05-15
EP0271603B1 (en) 1990-05-09
ES2015527B3 (en) 1990-09-01
DE3670967D1 (en) 1990-06-13

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