EP0365776B1 - Arrangement of clamping jaws on a flame-cutting machine for continuous casting - Google Patents

Arrangement of clamping jaws on a flame-cutting machine for continuous casting Download PDF

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Publication number
EP0365776B1
EP0365776B1 EP89115045A EP89115045A EP0365776B1 EP 0365776 B1 EP0365776 B1 EP 0365776B1 EP 89115045 A EP89115045 A EP 89115045A EP 89115045 A EP89115045 A EP 89115045A EP 0365776 B1 EP0365776 B1 EP 0365776B1
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EP
European Patent Office
Prior art keywords
cutting
clamping jaws
clamping
cutting torch
torch
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EP89115045A
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German (de)
French (fr)
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EP0365776A1 (en
Inventor
Klaus Herbener
Karl-Hubert Orban
Karlheinz Schmunck
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Messer Griesheim GmbH
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Messer Griesheim GmbH
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Priority to AT89115045T priority Critical patent/ATE75642T1/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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting

Definitions

  • the invention relates to an arrangement of clamping jaws of a flame cutting machine on a continuous caster according to the preamble of claim 1.
  • Flame cutting machines are used in continuous casting plants for dividing one or more adjacent cast strands. Since the cast strands from sheets, vertical and horizontal continuous casting machines are conveyed out at a certain speed and transported further via a roller conveyor, a synchronization of the speeds of the strand and flame cutting machine is necessary during the cutting process.
  • the time required to subdivide the continuously moving strand should be kept small. Therefore, the aim is to swivel the torch into its lateral cutting position as quickly as possible after the flame cutting machine has been connected to the strand.
  • the cutting position of the burner is different for strands of the same width but of different heights.
  • the opening angle formed between the two clamping jaws and thus the positional clamping position of the clamping jaws depends only on the width of the strand, but not on the height thereof. It is therefore not possible to synchronously couple the pivoting movement of the burner to that of the clamping jaws, in order to achieve that the burner is automatically positioned in its cutting position after the clamping jaws have been clamped.
  • the invention is therefore based on the object to clamp flame cutting machines tangentially to a longitudinal edge of the strand that regardless of the height, the width and the casting mold of the cutting torch in the clamped state of the flame cutting machine on the strand set to a predetermined cutting and / or cutting point and the cutting control is adjusted .
  • the invention makes it possible, if necessary, to start flame cutting immediately after the flame cutting machine has been clamped to the rope, regardless of the width and the height, in all existing casting molds. There is no need to reset the cutting control.
  • a clamping jaw 10 is shown in the right half of the sheet, with which a flame cutting machine, not shown, is clamped to a strand 11 by means of a fitting 12 fastened to the clamping jaw 10.
  • the strand is continuously moved on a roller table 13.
  • the flame cut is done with a cutting torch, the longitudinal axis 14 of which shows the cutting position of the torch with respect to the strand 11.
  • the cutting position of the burner is represented by the position of the longitudinal axis 16. 1 shows the largest and smallest possible strands 11 and 15, to the longitudinal edge of which the cutting torch can be pivoted into its cutting position without having to reset the cutting control.
  • the cutting control in the known device consists of at least one switching element and a switch, which are arranged on extensions of the clamping jaw 10 and the cutting torch.
  • a jaw 17 is shown in a position 18 in which it rests on the upper longitudinal edge 19 of the strand 11.
  • the clamping jaw 17 is arranged in an axis of rotation 21 separated from the axis of rotation 20 of the cutting torch in the same horizontal plane 22.
  • a clamping jaw not shown, is of course arranged in the same position on the right-hand side of FIG. 1, so that the axis of rotation 20 of the cutting torch is arranged between the two clamping jaws and at the same distance from the axes of rotation thereof.
  • the clamping jaw 17 is located above the center 23 of the axis of rotation 21.
  • a shaped piece 24 is fastened at its end directed towards the strand 11, which abuts with its contact surface 25 on the longitudinal edge 19 of the strand.
  • the contact surface 25 of the shaped piece is a flat surface which runs essentially parallel to the longitudinal axis 26 of the clamping jaws.
  • an adjustable entrainment element 27 for entraining the cutting torch from the left (the same is provided for the right jaw) is fastened.
  • the cutting torch longitudinal axis is designated 28 in FIG. 1.
  • the driving surface of the driving element is designed for a distance from the contact surface 25 of the fitting that when pivoting the jaws with the cutting torch into the clamping or cutting or cutting position, the longitudinal axis 26 of the jaws and the longitudinal axis 28 of the cutting torch pivot almost parallel in the cutting plane .
  • the cutting control is simultaneously positioned so that the drive for the cutting movement is triggered immediately.
  • the axes of rotation 20, 21, on which the clamping jaws and the cutting torch are pivoted, are designed as shafts which are arranged in their end region in bearing bodies 29 which can be adjusted without play.
  • FIG. 3 shows the end region of an axis of rotation 21 which is mounted in rolling elements, preferably tapered roller bearings, which are adjusted in the axial and radial directions by adjusting the clamping nuts 30.
  • the cutting control for controlling the workflow of the cutting torch is arranged on the shafts of the axes of rotation with the working steps cutting - cutting - finishing cut.
  • the cutting control essentially consists of two switching elements 31, 32 arranged on the shafts of the clamping jaws and at least one switch 33 arranged on the shaft of the cutting torch.
  • a cam of the switching element 32 actuates the switch 33 when the clamping jaws are reached with the cutting torch in the clamping position and releases it the cutting movement of the cutting torch with the generated switching signal from left to right (in Fig. 2). Accordingly, the switching element 31 triggers the termination of the cutting movement.
  • the shaft of the cutting torch is connected to a drive 39, which is controlled by the switch 33, via a gear 38 (FIG. 2), which is only shown schematically.
  • the switching elements 31, 32 are infinitely adjustable in the axial and rotational directions without bearing play via clamping disks 34, 35.
  • the switch 33 is also attached to the shaft of the cutting torch without play via a clamping disk 36. The constant position of the switch is ensured by a key 37.
  • a counterweight 40 is arranged on the clamping disk 36 arranged on the shaft of the cutting torch, by means of which the tooth play of the gear 38 is compensated.
  • the clamping jaws are arranged in a common vertical plane on a common shaft.
  • the invention results in precise cutting and cutting points above the cpl.
  • Working area of the machine also for round blocks and narrow slabs. Due to the play-free storage of all the elements required for clamping, positioning the torch and for cutting, constant kerfs are achieved even with strong strand oscillation.
  • the burner distance to the strand edge is set in a simple manner.

Abstract

When subdividing cast billets, the flame-cutting machines used for this are clamped via clamping jaws (17) tangentially against the longitudinal edge of the billet (19). In this process, the cutting torch of the clamping jaws is swivelled into an initial cutting position and positioned by means of control elements coupled to the clamping jaws and the cutting torch. In order to avoid an adjustment of the control elements in the case of billets of different widths and heights and in the case of different continuous-casting billet forms, it is proposed according to the invention that the axes of rotation (20, 21) of the clamping jaws (17) and of the cutting torch (28) be situated in a common horizontal or vertical plane (22) and the clamping jaws (17) be situated over the centre (23) of their axis of rotation (21) and that, on swivelling the clamping jaws (17) with the cutting torch into the clamping position or initial or final cutting position, the longitudinal axis (26) of the clamping jaws and the longitudinal axis (28) of the cutting torch swivel virtually parallel to one another in the cutting plane. <IMAGE>

Description

Die Erfindung betrifft eine Anordnung von Klemmbacken einer Brennschneidmaschine auf einer Stranggießanlage gemäß dem Oberbegriff des Anspruches 1.The invention relates to an arrangement of clamping jaws of a flame cutting machine on a continuous caster according to the preamble of claim 1.

Brennschneidmaschinen werden in Stranggießanlagen zum Unterteilen von einem oder auch mehreren nebeneinander liegenden Gußsträngen verwendet. Da die Gußstränge aus Bogen, Vertikal- und Horizontal-Stranggießanlagen mit einer gewissen Geschwindigkeit ausgefördert und über einen Rollengang weitertransportiert werden, ist während des Schneidvorganges eine Synchronisation der Geschwindigkeiten von Strang- und Brennschneidmaschine erforderlich.Flame cutting machines are used in continuous casting plants for dividing one or more adjacent cast strands. Since the cast strands from sheets, vertical and horizontal continuous casting machines are conveyed out at a certain speed and transported further via a roller conveyor, a synchronization of the speeds of the strand and flame cutting machine is necessary during the cutting process.

Um diese Synchronisation sicherzustellen, ist es z. B. aus der DE PS 26 25 758 bekannt, die Brennschneidmaschine an die Seitenflächen des Stranges anzuklemmen. Die seitlich an den Strang anlegbaren Klemmbacken sind dabei um eine gemeinsame Achse schwenkbar gelagert.To ensure this synchronization, it is e.g. B. from DE PS 26 25 758 known to clamp the flame cutting machine to the side surfaces of the strand. The clamping jaws that can be placed on the side of the strand are pivoted about a common axis.

Aufgrund wirtschaftlicher Überlegungen soll, der zum Unterteilen des sich kontinuierlich fortbewegenden Stranges benötigte Zeitaufwand klein gehalten werden. Daher wird angestrebt, den Brenner möglichst rasch nach dem erfolgten Anklemmen der Brennschneidmaschine an den Strang in seine seitliche Anschneidstellung zu verschwenken.Due to economic considerations, the time required to subdivide the continuously moving strand should be kept small. Therefore, the aim is to swivel the torch into its lateral cutting position as quickly as possible after the flame cutting machine has been connected to the strand.

Die Anschneidstellung des Brenners ist bei gleichbreiten aber unterschiedlich hohen Strängen jeweils eine andere. Dagegen ist der von den beiden Klemmbacken zwischen sich gebildete Öffnungswinkel und damit die lagemäßige Klemmstellung der Klemmbacken nur von der Breite des Stranges, nicht aber von der Höhe desselben abhängig. Daher ist es nicht möglich, die Schwenkbewegung des Brenners an die der Klemmbacken synchron anzukoppeln, um dadurch zu erreichen, daß der Brenner automatisch nach erfolgter Klemmstellung der Klemmbacken in seiner Anschneidstellung positioniert ist.The cutting position of the burner is different for strands of the same width but of different heights. In contrast, the opening angle formed between the two clamping jaws and thus the positional clamping position of the clamping jaws depends only on the width of the strand, but not on the height thereof. It is therefore not possible to synchronously couple the pivoting movement of the burner to that of the clamping jaws, in order to achieve that the burner is automatically positioned in its cutting position after the clamping jaws have been clamped.

In der den Oberbegriff des Anspruchs 1 bildenden DE 32 43 810 C 1 wird daher vorgeschlagen, die Klemmbacken in ihrer Klemmstellung reibschlüssig an die Stranglängskante anzulegen, so daß sich der Schneidbrenner im Anklemmzustand der Brennschneidmaschine am Strang unabhängig von der Höhe des Stranges, automatisch in seiner Anschneidstellung befindet. Die Lagerstellen der Klemmbacken und des Schneidbrenners sind auf getrennten Wellen angeordnet. Die Drehachse befindet sich bei den Klemmbacken außerhalb deren Längsachsen und bei dem Schneidbrenner auf dessen Längsachse. Daher verschwenken die Brenner- und Klemmbackenlängsachsen ungleich, was bei unterschiedlich breiten Strängen und bei unterschiedlichen Stranggußformen wie Knüppel-, Block- oder Rundquerschnitten zu unterschiedlichen An- und Ausschneidpunkten des Schneidbrenners führen würde.DE 32 43 810 C 1, which forms the preamble of claim 1, therefore proposes to apply the clamping jaws in their clamping position in a frictional manner to the longitudinal edge of the strand, so that the cutting torch in the clamped state of the flame cutting machine on the strand regardless of the height of the strand, automatically in its Cutting position. The bearings of the jaws and the cutting torch are arranged on separate shafts. The axis of rotation of the clamping jaws is outside of their longitudinal axes and of the cutting torch on its longitudinal axis. Therefore, the torch and jaw longitudinal axes pivot unevenly, which would lead to different cutting and cutting points of the cutting torch with strands of different widths and with different continuous casting molds such as billet, block or round cross sections.

Um diesen Nachteil zu beseitigen, wird in der DE 32 43 810 C1 weiterhin vorgeschlagen, an der Klemmbacke ein Formstück zu befestigen, dessen Anlagefläche so geformt ist, daß bei gleichbreiten aber unterschiedlich hohen Strängen die Änderung der Winkelverstellung der Längsachse des Brenners in seiner Anschneidstellung der Winkelverstellung größenmäßig entspricht mit der die Klemmbacke ihre Anklemmlage ändert.In order to eliminate this disadvantage, it is further proposed in DE 32 43 810 C1 to attach a fitting to the clamping jaw, the contact surface of which is shaped in such a way that, with strands of the same width but different heights, the change in the angular adjustment of the longitudinal axis of the burner in its cutting position of The size of the angle adjustment corresponds with which the jaw changes its clamping position.

Dabei ist jedoch ein Verschwenken des Schneidbrenners in seine seitliche Anklemmstellung ohne Neueinstellung der Schneidsteuerung nur bei Gußsträngen mit den Querschnittsdurchmessern a und b, deren Längen innerhalb der Verhältnisse a > 1/2 b und a > b liegen, möglich.However, swiveling the cutting torch into its lateral clamping position without readjusting the cutting control is only possible with cast strands with cross-sectional diameters a and b, the lengths of which are within the ratios a> 1/2 b and a> b.

Der Erfindung liegt daher die Aufgabe zugrunde, Brennschneidmaschinen so tangential an eine Stranglängskante anzuklemmen, daß unabhängig von der Höhe, der Breite und der Stranggußform der Schneidbrenner im Anklemmzustand der Brennschneidmaschine am Strang auf einen vorgegebenen An- und/oder Ausschneidpunkt eingestellt und die Schneidsteuerung justiert ist.The invention is therefore based on the object to clamp flame cutting machines tangentially to a longitudinal edge of the strand that regardless of the height, the width and the casting mold of the cutting torch in the clamped state of the flame cutting machine on the strand set to a predetermined cutting and / or cutting point and the cutting control is adjusted .

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des kennzeichnenden Teiles des Hauptanspruches gelöst.This object is achieved with the features of the characterizing part of the main claim.

Mit der Weiterbildung der Erfindung gemäß den Merkmalen der Unteransprüche 2 und 3 wird das nahezu parallele Verschwenken des Schneidbrenners und der Klemmbacke mit konstruktiv einfachen Bauelementen erreicht. Durch die Anordnung der Mitnahmeelemente im mittleren Drittel, vorzugsweise in nahezu der Mitte, der Klemmbacken werden Einstellfehler verkleinert.With the development of the invention according to the features of subclaims 2 and 3, the almost parallel pivoting of the cutting torch and the jaw is achieved with structurally simple components. By arranging the driving elements in the middle third, preferably almost in the middle, of the clamping jaws, setting errors are reduced.

Eine vorteilhafte Weiterbildung der Erfindung wird durch die Merkmale der Ansprüche 4 bis 6 erreicht. Durch die spielfreie Lagerung und Befestigung aller Bauteile bzw. -gruppen, die zum Anklemmen, Positionieren des Schneidbrenners und zum Schneiden benötigt werden, wird eine konstante Schnittfuge auch bei starker Strangoszillation erreicht.An advantageous development of the invention is achieved by the features of claims 4 to 6. Due to the play-free storage and fastening of all components or groups, which are required for clamping, positioning the cutting torch and for cutting, a constant kerf is achieved even with strong strand oscillation.

Die Erfindung ermöglicht es, im Bedarfsfalle nunmehr bei allen vorkommenden Stranggußformen unabhängig von der Breite und der Höhe sofort nach Anklemmung der Brennschneidmaschine an dem Strang mit dem Brennschneiden zu beginnen. Eine Neueinstellung der Schneidsteuerung entfällt.The invention makes it possible, if necessary, to start flame cutting immediately after the flame cutting machine has been clamped to the rope, regardless of the width and the height, in all existing casting molds. There is no need to reset the cutting control.

Ein Ausführungsbeispiel ist in der Zeichnung dargestellt und wird im folgeden näher beschrieben.An embodiment is shown in the drawing and will be described in the following.

Es zeigen:

  • Fig. 1 eine Vorderansicht von zwei unterschiedlich breiten Strängen, an denen auf der rechten Blattseite eine bekannte und auf der linken Blattseite eine erfindungsgemäße Klemmbacke tangential anliegt
  • Fig. 2 eine Vorderansicht der Anordnung der Schneidsteuerung
  • Fig. 3 eine spielfrei einstellbare Lagerstelle
Show it:
  • Fig. 1 is a front view of two strands of different widths, on which on the right hand side of a known and on the left hand side of a clamping jaw according to the invention is tangential
  • Fig. 2 is a front view of the arrangement of the cutting control
  • Fig. 3 is a play-free adjustable bearing

In Fig. 1 ist in der rechten Blatthälfte eine Klemmbacke 10 dargestellt, mit der eine nicht dargestellte Brennschneidmaschine an einen Strang 11 mittels eines an der Klemmbacke 10 befestigten Formstückes 12 angeklemmt ist. Der Strang wird dabei auf einem Rollengang 13 kontinuierlich fortbewegt.In Fig. 1, a clamping jaw 10 is shown in the right half of the sheet, with which a flame cutting machine, not shown, is clamped to a strand 11 by means of a fitting 12 fastened to the clamping jaw 10. The strand is continuously moved on a roller table 13.

Der Brennschnitt geschieht mit einem Schneidbrenner dessen Längsachse 14 die Anschneidstellung des Brenners bezüglich des Stranges 11 verdeutlicht. Bei einem Strang 15, der eine geringere Breite und Höhe als der Strang 11 aufweist, ist die Anschneidstellung des Brenners durch die Lage der Längsachse 16 dargestellt. In Fig. 1 sind die größt- bzw. kleinstmöglichen Stränge 11 bzw. 15 dargestellt, zu deren Längskante der Schneidbrenner ohne Neueinstellung der Schneidsteuerung in seine Anschneidstellung verschwenkt werden kann. Die Schneidsteuerung besteht bei der bekannten Einrichtung aus mindestens einem Schaltelement und einem Schalter, die an Verlängerungen der Klemmbacke 10 und des Schneidbrenners angeordnet sind.The flame cut is done with a cutting torch, the longitudinal axis 14 of which shows the cutting position of the torch with respect to the strand 11. In the case of a strand 15 which has a smaller width and height than the strand 11, the cutting position of the burner is represented by the position of the longitudinal axis 16. 1 shows the largest and smallest possible strands 11 and 15, to the longitudinal edge of which the cutting torch can be pivoted into its cutting position without having to reset the cutting control. The cutting control in the known device consists of at least one switching element and a switch, which are arranged on extensions of the clamping jaw 10 and the cutting torch.

In der linken Blatthälfte von Fig. 1 ist eine Klemmbacke 17 in einer Lage 18 dargestellt, in der sie auf der oberen Längskante 19 des Stranges 11 anliegt. Die Klemmbacke 17 ist in einer von der Drehachse 20 des Schneidbrenners getrennten Drehachse 21 in der gleichen horizontalen Ebene 22 angeordnet. Spiegelbildlich hierzu ist selbstverständlich auf der rechten Blattseite der Fig. 1 in der gleichen Lage eine nicht dargestellte Klemmbacke angeordnet, so daß die Drehachse 20 des Schneidbrenners zwischen den beiden Klemmbacken und mit gleichem Abstand zu den Drehachsen derselben angeordnet ist. Die Klemmbacke 17 befindet sich über der Mitte 23 der Drehachse 21. An der Klemmbacke 17 ist an ihrem zum Strang 11 gerichteten Ende ein Formstück 24 befestigt, das mit seiner Anlagefläche 25 an der Längskante 19 des Stranges anliegt. Die Anlagefläche 25 des Formstückes ist eine eben ausgebildete Fläche, die im wesentlichen parallel zu der Klemmbackenlängsachse 26 verläuft. Im mittleren Drittel der Klemmbacken ist ein einstellbares Mitnahmeelement 27 für die Mitnahme des Schneidbrenners von der linken (entsprechendes ist bei der rechten Klemmbacke vorgesehen) befestigt. Die Schneidbrennerlängsachse ist in der Fig. 1 mit 28 bezeichnet. Die Mitnahmefläche des Mitnahmeelementes ist dabei so für einen Abstand zu der Anlagefläche 25 des Formstückes ausgelegt, daß beim Verschwenken der Klemmbacken mit dem Schneidbrenner in die Anklemm- bzw. An- oder Ausschneidstellung, die Klemmbackenlängsachse 26 und die Schneidbrennerlängsachse 28 in der Schneidebene nahezu parallel verschwenken.In the left half of FIG. 1, a jaw 17 is shown in a position 18 in which it rests on the upper longitudinal edge 19 of the strand 11. The clamping jaw 17 is arranged in an axis of rotation 21 separated from the axis of rotation 20 of the cutting torch in the same horizontal plane 22. In mirror image of this, a clamping jaw, not shown, is of course arranged in the same position on the right-hand side of FIG. 1, so that the axis of rotation 20 of the cutting torch is arranged between the two clamping jaws and at the same distance from the axes of rotation thereof. The clamping jaw 17 is located above the center 23 of the axis of rotation 21. On the clamping jaw 17, a shaped piece 24 is fastened at its end directed towards the strand 11, which abuts with its contact surface 25 on the longitudinal edge 19 of the strand. The contact surface 25 of the shaped piece is a flat surface which runs essentially parallel to the longitudinal axis 26 of the clamping jaws. In the middle third of the jaws, an adjustable entrainment element 27 for entraining the cutting torch from the left (the same is provided for the right jaw) is fastened. The cutting torch longitudinal axis is designated 28 in FIG. 1. The driving surface of the driving element is designed for a distance from the contact surface 25 of the fitting that when pivoting the jaws with the cutting torch into the clamping or cutting or cutting position, the longitudinal axis 26 of the jaws and the longitudinal axis 28 of the cutting torch pivot almost parallel in the cutting plane .

Durch eine Kopplung der Bewegungen des Brenners und der Klemmbacke während des Anklemmvorganges wird bei allen Knüppel-, Block- und Rundquerschnitten erreicht, daß zu dem Zeitpunkt, zu dem die Klemmbacke an der Längskante 19 des Stranges 11 anliegt, sich auch der Schneidbrenner mit seiner Brennerachse 28 in seiner Anschneidstellung befindet.By coupling the movements of the burner and the jaw during the clamping process achieved with all billet, block and round cross-sections that at the time when the clamping jaw rests on the longitudinal edge 19 of the strand 11, the cutting torch with its torch axis 28 is in its cutting position.

Mittels der nahezu parallelen Verschwenkung der Klemmbacke 17 mit dem Schneidbrenner wird gleichzeitig die Schneidsteuerung positioniert, so daß der Antrieb für die Schneidbewegung unverzüglich ausgelöst wird.By means of the almost parallel pivoting of the jaw 17 with the cutting torch, the cutting control is simultaneously positioned so that the drive for the cutting movement is triggered immediately.

Die Drehachsen 20, 21, auf denen die Klemmbacken und der Schneidbrenner verschwenkt werden, sind als Wellen ausgebildet, die in ihrem Endbereich in spielfrei einstellbaren Lagerkörpern 29 angeordnet sind. In Fig. 3 ist der Endbereich einer Drehachse 21 dargestellt, der in Wälzkörpern, vorzugsweise Kegelrollenlagern, gelagert ist, welche über eine Verstellung der Spannmuttern 30 in axialer und radialer Richtung eingestellt werden.The axes of rotation 20, 21, on which the clamping jaws and the cutting torch are pivoted, are designed as shafts which are arranged in their end region in bearing bodies 29 which can be adjusted without play. FIG. 3 shows the end region of an axis of rotation 21 which is mounted in rolling elements, preferably tapered roller bearings, which are adjusted in the axial and radial directions by adjusting the clamping nuts 30.

Auf den Wellen der Drehachsen ist die Schneidsteuerung für die Steuerung des Arbeitsablaufes des Schneidbrenners mit den Arbeitsschritten Anschneiden - Schneiden - Schnitt beenden angeordnet. Die Schneidsteuerung besteht im wesentlichen aus zwei auf den Wellen der Klemmbacken angeordneten Schaltelementen 31, 32 und mindestens einem auf der Welle des Schneidbrenners angeordneten Schalter 33. Ein Nocken des Schaltelementes 32 betätigt beim Erreichen der Klemmbacken mit dem Schneidbrenner in der Anklemmstellung den Schalter 33 und löst mit dem erzeugten Schaltsignal die Schneidbewegung des Schneidbrenners von links nach rechts (in Fig. 2) aus. Entsprechend löst das Schaltelement 31 die Beendigung der Schneidbewegung aus.The cutting control for controlling the workflow of the cutting torch is arranged on the shafts of the axes of rotation with the working steps cutting - cutting - finishing cut. The cutting control essentially consists of two switching elements 31, 32 arranged on the shafts of the clamping jaws and at least one switch 33 arranged on the shaft of the cutting torch. A cam of the switching element 32 actuates the switch 33 when the clamping jaws are reached with the cutting torch in the clamping position and releases it the cutting movement of the cutting torch with the generated switching signal from left to right (in Fig. 2). Accordingly, the switching element 31 triggers the termination of the cutting movement.

Die Welle des Schneidbrenners ist hierzu über ein nur schematisch dargestelltes Getriebe 38 (Fig. 2) mit einem Antrieb 39 verbunden, der von dem Schalter 33 angesteuert wird.For this purpose, the shaft of the cutting torch is connected to a drive 39, which is controlled by the switch 33, via a gear 38 (FIG. 2), which is only shown schematically.

Die Schaltelemente 31, 32 sind über Klemmscheiben 34, 35 in axialer und in Drehrichtung ohne Lagerspiel stufenlos einstellbar. Der Schalter 33 ist ebenfalls über eine Klemmscheibe 36 spielfrei auf der Welle des Schneidbrenners befestigt. Die immer gleiche Lage des Schalters ist durch eine Paßfeder 37 gewährleistet.The switching elements 31, 32 are infinitely adjustable in the axial and rotational directions without bearing play via clamping disks 34, 35. The switch 33 is also attached to the shaft of the cutting torch without play via a clamping disk 36. The constant position of the switch is ensured by a key 37.

An der auf der Welle des Schneidbrenners angeordneten Klemmscheibe 36 ist ein Gegengewicht 40 angeordnet, mittels dem das Zahnspiel des Getriebes 38 kompensiert wird.A counterweight 40 is arranged on the clamping disk 36 arranged on the shaft of the cutting torch, by means of which the tooth play of the gear 38 is compensated.

Nach einem weiteren nicht dargestellten Ausführungsbeispiel sind die Klemmbacken in einer gemeinsamen vertikalen Ebene auf einer gemeinsamen Welle angeordnet.According to a further embodiment, not shown, the clamping jaws are arranged in a common vertical plane on a common shaft.

Durch die Erfindung ergeben sich genaue An- und Ausschneidpunkte über dem kpl. Arbeitsbereich der Maschine, auch für Rundblöcke und schmale Brammen. Durch die spielfreie Lagerung aller Elemente, die zum Anklemmen, Positionieren des Brenners und zum Schneiden benötigt werden, werden konstante Schnittfugen auch bei starker Strangoszillation erreicht.The invention results in precise cutting and cutting points above the cpl. Working area of the machine, also for round blocks and narrow slabs. Due to the play-free storage of all the elements required for clamping, positioning the torch and for cutting, constant kerfs are achieved even with strong strand oscillation.

Da die Mitnahme im unmittelbaren Brennerbereich liegt, erfolgt die Einstellung des Brennerabstandes zur Strangkante in einfacher Art und Weise.Since the entrainment is in the immediate area of the burner, the burner distance to the strand edge is set in a simple manner.

Claims (6)

1. Arrangement of clamping jaws of a flame-cutting machine on a continuous-casting installation, which clamping jaws can be placed frictionally in a clamping position against the longitudinal edge of the billet and are pivotably mounted, and having a cutting torch which is pivotably mounted at a bearing point separate from the bearing point(s) of the clamping jaws, in which arrangement shaped pieces (24) for bearing against the longitudinal edge (19) of the billet are fastened to the clamping jaws (17), and one of the clamping jaws and the cutting torch are pivotable synchronously with one another and position a cutting control system during the pivoting,
characterised in that the clamping jaws (17) are located above the centre (23) of their pivot (21) and have entrainment elements (27) for the entrainment of the cutting torch (28) by the right-hand or left-hand clamping jaw (17), and, during the pivoting of the clamping jaws (17) with the cutting torch into the clamping or initial cutting position, the clamping-jaw longitudinal axis (26) and the cutting-torch longitudinal axis (28) pivot virtually parallel to one another in the cutting plane, and the pivots (20, 21) of the clamping jaws (17) and of the cutting torch (28) are located in a common horizontal or vertical plane (22).
2. Arrangement according to Claim 1,
characterised in that the shaped pieces (24) have flat bearing surfaces (25) which are approximately parallel to the longitudinal axes (26) of the clamping jaws (17) running through the pivot points (21).
3. Arrangement according to Claim 1 or 2,
characterised in that the entrainment elements (27) are fastened in the central third of the clamping jaws (17), the entrainment surfaces of which entrainment elements (27) are designed to be at a distance from the bearing surfaces (25) of the shaped pieces (24) such that the virtually parallel pivoting of the cutting-torch and clamping-jaw longitudinal axis (26, 28) takes place.
4. Arrangement according to Claims 1 to 3,
characterised in that the pivots (20, 21) of the clamping jaws (17) and of the cutting torch (28) in each case consist of a shaft arranged in its end area in bearing bodies (29), preferably rolling-contact bodies, which can be adjusted free of play, in that at least one switching element (31, 32) and a switch (33) for the control of the cutting torch (28) during the initial cut and/or during the cut and/or during the end of cut are arranged on the shafts, and in that at least one switching element or a switch is fastened to the shafts via a clamping connection (34, 35, 36) in such a way as to be infinitely adjustable free of play.
5. Arrangement according to one of Claims 1 to 4,
characterised in that the bearing bodies (29) are adjustable in axial and radial direction.
6. Arrangement according to one of Claims 1 to 5,
characterised in that the shaft of the cutting torch (28) is connected via gearing (38) to a drive (39) whose tooth play is compensated via a counterweight (40) fastened to the switch (33).
EP89115045A 1988-09-16 1989-08-16 Arrangement of clamping jaws on a flame-cutting machine for continuous casting Expired - Lifetime EP0365776B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115045T ATE75642T1 (en) 1988-09-16 1989-08-16 ARRANGEMENT OF CLAMPING JAWS OF AN OXYGEN CUTTING MACHINE ON A CONTINUOUS CASTING PLANT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8811766U 1988-09-16
DE8811766U DE8811766U1 (en) 1988-09-16 1988-09-16

Publications (2)

Publication Number Publication Date
EP0365776A1 EP0365776A1 (en) 1990-05-02
EP0365776B1 true EP0365776B1 (en) 1992-05-06

Family

ID=6828019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115045A Expired - Lifetime EP0365776B1 (en) 1988-09-16 1989-08-16 Arrangement of clamping jaws on a flame-cutting machine for continuous casting

Country Status (3)

Country Link
EP (1) EP0365776B1 (en)
AT (1) ATE75642T1 (en)
DE (2) DE8811766U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103406637A (en) * 2013-08-15 2013-11-27 上海新中冶金设备厂 Automatic flame cutting machine for square and round continuous casting billets

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2625758C3 (en) * 1976-06-09 1979-04-12 Messer Griesheim Gmbh, 6000 Frankfurt Flame cutting machine
DE3275068D1 (en) * 1982-09-11 1987-02-19 Aute Autogene Tech Oxygen cutting machine
DE3243810C1 (en) * 1982-11-26 1983-12-15 Messer Griesheim Gmbh, 6000 Frankfurt Arrangement of clamping jaws of a flame cutting machine on a continuous caster

Also Published As

Publication number Publication date
ATE75642T1 (en) 1992-05-15
DE58901335D1 (en) 1992-06-11
EP0365776A1 (en) 1990-05-02
DE8811766U1 (en) 1988-12-01

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