EP0537195A1 - Pouring tube insertion and replacement device. - Google Patents

Pouring tube insertion and replacement device.

Info

Publication number
EP0537195A1
EP0537195A1 EP91911206A EP91911206A EP0537195A1 EP 0537195 A1 EP0537195 A1 EP 0537195A1 EP 91911206 A EP91911206 A EP 91911206A EP 91911206 A EP91911206 A EP 91911206A EP 0537195 A1 EP0537195 A1 EP 0537195A1
Authority
EP
European Patent Office
Prior art keywords
lever
movable plate
pouring
plate
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
EP91911206A
Other languages
German (de)
French (fr)
Other versions
EP0537195B1 (en
Inventor
Stanislav Szadkowski
Stanislav Knapik
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.)
International Industrial Engineering SA
Original Assignee
International Industrial Engineering SA
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 International Industrial Engineering SA filed Critical International Industrial Engineering SA
Publication of EP0537195A1 publication Critical patent/EP0537195A1/en
Application granted granted Critical
Publication of EP0537195B1 publication Critical patent/EP0537195B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle

Definitions

  • the present invention relates to an improved device for supplying and exchanging a pouring tube for a metal pouring container from the bottom in which a movable closure plate and / or a replacement pouring tube attached to a movable plate is placed by a common transverse rim next to a movable plate carrying a pouring tube to be replaced or against a closure plate to be moved away from the tap hole, said replacement movable plague and that to be replaced being mounted neck ⁇ smoothing on guides capable of transmitting an upward thrust force and of guiding the displacement in translation of the plates and of the pouring tubes parallel to themselves under the action of a pneumatic cylinder in a direction perpendicular to the axis of the tap hole, from a loading position to a service position in the axis of the container tap hole and from the service position to a release position, d e so as to allow the exchange of the tube without lifting the container.
  • Document EP-A-0192019 discloses a device for supplying and exchanging a pouring tube with a movable attached plate for a steel or metallurgical container which can be closed off at the bottom using a stopper or a sliding closure.
  • the supply and exchange device comprises a movable refractory plate capable of sliding, under the action of a jack, along an upper reference plate, from a loading position to a service position or a closed position in alignment with the axis of a tap hole.
  • Guide rails apply the movable plate, in sealed contact, against the upper reference plate under the effect of an upward thrust transmitted by a first end of levers on which act downwards at an opposite end of the helical springs taking support on the frame of the supply and exchange device.
  • the guide rails are parallel to each other and form a slightly inclined plane at an angle of 5 to 10 ° relative to the reference plane.
  • a double pneumatic cylinder ensures the linear displacement of the movable plate carrying the pouring tube.
  • the replacement tube is brought by pivoting around a substantially horizontal axis in the mold or the mold well in order to allow the exchange of pouring tube without having to lift the distributor.
  • the movable plate intended to slide along a rectilinear trajectory along the upper reference plate forms with respect thereto an inclined surface whose inclination is determined by the slope of the trajectory of the rails. guides.
  • the infiltrated metal forms a crust which alters the flatness of the contact surfaces and risks causing the movable plate to jam and being a cause of non-sealing of a contact area of the two plates in the immediate vicinity of the pouring orifice.
  • the present invention aims to overcome this drawback and proposes for this purpose a device which ensures the parallelism of the replacement movable plate with the upper reference plate, as soon as the tap hole is covered by said movable plate brought into the immediate vicinity of the pouring orifice by a pneumatic cylinder.
  • the device for supplying and exchanging a pouring tube is of the type described in the first paragraph of this specification.
  • This device is characterized in that it comprises means for imparting to the movable plate a tilting movement around a frontal horizontal edge of the movable plate engaged in the area adjacent to the pouring orifice, so as to make the movable plate strictly parallel to the underside of the upper plate.
  • This tilting movement makes possible the sealed contact of the movable plate against the upper plate and prevents any leakage of liquid metal during the exchange of the pouring tube or when the pouring orifice is closed by a movable plate d shutter.
  • the means intended to give the movable plate a tilting movement consist of a lever acting upwards on a rear part of the movable plate opposite the front edge engaged in the sealing zone surrounding the pouring hole of the reference plate.
  • the lever is a portion of guide rail fixed by an end remote from the taphole to a rocker arm comprising, a crank articulated around a horizontal shaft, against which a piston pushed back by a helical spring as soon as the piston is released by a double pneumatic cylinder intended to slide a movable plate along the guide rails.
  • the rocker arm comprises a first arm fixed in a direction normal to the surface of a cylindrical ring mounted on a horizontal shaft around which is wound a torsion spring fixed by a first end in the ring and by a second end in a fixed frame of the supply device, the ring being angularly displaced around the shaft against the spring under the action of the thrust exerted by the double jack on a second arm extending perpendicular to the first arm in a radial plane of the cylindrical ring.
  • Figure 1 is an end view of a supply and exchange device according to the invention of a pouring tube disposed under a pouring container;
  • Figure 2 is a side elevational view on a larger scale of the supply and exchange device shown in Figure 1 having a guide rail in the loading position;
  • Figure 3 is a side elevation view similar to that of Figure 2 comprising a guide rail in the raised position;
  • Figure 5 is a perspective view with partial arra ⁇ , of the supply and exchange device shown in Figure 2, provided with a first embodiment of a rocker arm according to the invention, shown in the low position waiting;
  • Figure 6 is a perspective view of the device shown in Figure 1, the rocker having actuated the guide rail in the raised position;
  • Figure 7 is an exploded perspective view of a second embodiment of a rocker arm according to the invention.
  • Figure 8 is a partially cutaway perspective view of the rocker arm shown in Figure 5, occupying a low position
  • Figure 9 is a perspective view similar to that of Figure 6, showing the rocker arm in the raised position.
  • the same reference references designate identical or analogous elements.
  • FIG. 1 shows a device for supplying and exchanging a pouring tube according to the invention, generally designated by the reference sign 1, mounted under a tapping distributor 5 in the vicinity of the tapping hole 7.
  • the distributor can possibly already be fitted with a sliding closing device. Generally the shutter is simply a stopper (not shown).
  • the device 1 is intended to allow the supply of a reserve pouring tube 2 compared to a movable plate 3, in the loading position 14, and the replacement of a worn tube 2 ′, related to a movable plate 3 ', in service position 14'. ( Figure 2)
  • the seal between the internal nozzle 39 and the reference plate is ensured by a sealing collar 19.
  • the upper reference plate 6 is optionally formed of several independent refractory elements.
  • the refractory element surrounding the taphole is optionally provided, on a lower face, around a pouring orifice 27, with a groove 40 connected to a duct 41 for supplying argon.
  • Two guide rails 9 have an inclined stroke relative to the reference plate 6.
  • the guide rails 9 are divided into two fixed rail sections 9 ′ secured to a frame intended to be mounted under the tundish 5 in the vicinity of the tap hole 7 and three movable rail sections 9 "and disposed between the two respective fixed rail sections in their mutual extension.
  • the sections of movable guide rails 9 "are each mounted at the end of a lever pivoting about an axis AA '. Each lever is subjected at its end opposite to the action of a spring 10 which pushes this opposite end down, apply the movable rail sections upwards.
  • the slope of the guide rails 9 makes it possible to obtain a progressive tightening of the movable plate 3 of a pouring tube 2 against the upper reference plate 6 when any of the pouring tubes 2, 2 'is close to the taphole 7.
  • This tightening decreases when the movable plate 3 deviates from it, allowing easy removal of the above-mentioned plate in the release position 17 e -l'au re side of the taphole 7.
  • the movable plate 3 When the movable plate 3 is engaged in the sealing zone surrounding the tap hole 7, the movable plate 3 rests on the guide rails 9 and has a relatively small inclination relative to the upper reference plate 6 but sufficient to cause liquid metal to infiltrate between the upper reference plate 6 and the movable plate 3.
  • the movable plate 3 however applied upwards against the upper reference plate 6, under the thrust of levers 12, 12 'each subjected to the action of springs 10, 10' mounted at a sufficient distance from the tap hole 7, to protect them from the intense heat of the molten metal, does not provide a perfect seal until the parallelism of the movable plate 3 with the upper reference plate 6 is not ensured.
  • the linear displacement of the mobile plates 3, 3 ' is ensured by a retractable push rod 15 actuated by a pair of pneumatic jacks 16, 16' arranged in parallel in order to provide the force necessary to allow loading casting tube 2 quickly, making the best use of the small space available in height.
  • the rods 11 and 11 'of the cylinders 16 and 16' are interconnected by a movable frame 13 carrying the retractable push rod 15.
  • the frame 21 houses a cylindrical housing 22 in which is housed a helical spring 23 compressed under the action of a piston head 24 subjected to the thrust of the movable frame 13 which connects the rods of the double pneumatic cylinder 16, 16 'intended to slide a movable plate 3 along the guide rails from the loading position 14 to the service position 14 '.
  • the double push cylinder 16, 16 'brought into the extended position moves the movable frame 13 which comes to bear against the head of the piston 24 of the rocker arm 20.
  • the head of the piston 24 of the rocker arm 20 compresses the helical spring 23 in the housing 22 and allows an anneton 38 coupled to an elbow lever 26 to pivot about a horizontal axis HH 'and
  • the device brings the movable plague 3 horizontally by raising the part of the movable plate furthest from the pouring orifice 27, immediately after having put in place the pouring tube 2 attached to the movable plague in the position of loading 14, before or during the moving plate
  • the tilting movement has the advantage of making it possible to apply the movable plate 3 during translation under the action of the pneumatic cylinders 16, 16 ′, in leaktight manner against the upper reference plate 6 during the tube change. It makes it possible to prevent any leakage of liquid metal between the movable plague 3 and the upper reference plate 6 at the start of the tube change operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Chutes (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Making Paper Articles (AREA)
  • Basic Packing Technique (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

Le dispositif d'amenée et d'échange (1) selon l'invention d'un tube de coulée (2) rapporté à plaque mobile (3) coulissant sur des rails-guides (9) aptes à transmettre un effort de poussée vers le haut comprend un culbuteur (20) actionnant un levier (26) de manière à conférer à la plaque mobile (3) un mouvement de basculement autour d'une arête frontale horizontale de la plaque mobile engagée dans la zone d'étanchéité entourant un orifice de coulée dans une plaque de référence. Ce mouvement de basculement rend la plaque mobile (3) strictement parallèle à la face inférieure de la plaque supérieure de référence (6), améliore l'étanchéité du contact des deux plaques et empêche toute infiltration de métal entre les deux plaques.The feed and exchange device (1) according to the invention of a pouring tube (2) attached to a movable plate (3) sliding on guide rails (9) capable of transmitting a thrust force towards the top comprises a rocker arm (20) actuating a lever (26) so as to impart to the movable plate (3) a tilting movement about a horizontal front edge of the movable plate engaged in the sealing zone surrounding an orifice of casting in a reference plate. This tilting movement makes the movable plate (3) strictly parallel to the lower face of the upper reference plate (6), improves the sealing of the contact of the two plates and prevents any infiltration of metal between the two plates.

Description

DISPOSITIF D'AMENEE ET D'ECHANGE D'UN TUBE DE COULEE DEVICE FOR FEEDING AND EXCHANGING A CASTING TUBE
La présente invention est relative à un dispositif amélioré d'amenée et d'échange d'un tube de coulée pour récipient de coulée de métal par le fond dans lequel une plaque mobile d'obturation et/ou un tube de coulée de remplacement rapporté à une plaque mobile est posé par un rebord transversal commun à côté d'une plaque mobile portant un tube de coulée à remplacer ou contre une plaque d'obturation à éloigner du trou de coulée, ladite plague mobile de remplacement et celle à remplacer étant montées cou¬ lissantes sur des guides aptes à transmettre un effort de poussée vers le haut et à guider le dépla¬ cement en translation des plaques et des tubes de coulée parallèlement à eux-mêmes sous l'action d'un vérin pneumatique dans une direction perpendiculaire à l'axe du trou de coulée, depuis une position de chargement vers une position de service dans l'axe du trou de coulée du récipient et de la position de service vers une position de dégagement, de manière à permettre l'échange du tube sans soulever le récipient.The present invention relates to an improved device for supplying and exchanging a pouring tube for a metal pouring container from the bottom in which a movable closure plate and / or a replacement pouring tube attached to a movable plate is placed by a common transverse rim next to a movable plate carrying a pouring tube to be replaced or against a closure plate to be moved away from the tap hole, said replacement movable plague and that to be replaced being mounted neck ¬ smoothing on guides capable of transmitting an upward thrust force and of guiding the displacement in translation of the plates and of the pouring tubes parallel to themselves under the action of a pneumatic cylinder in a direction perpendicular to the axis of the tap hole, from a loading position to a service position in the axis of the container tap hole and from the service position to a release position, d e so as to allow the exchange of the tube without lifting the container.
Elle trouve sa principale application en sidérurgie dans les installations de coulée continue pour la mise en place dans l'alignement de l'axe du trou de coulée d'un conteneur métallurgique, sous ce dernier, des tubes de coulée interchangeables. Les tubes de coulée destinés à conduire le métal en fusion dans un moule ou un puits de lingotière, sont des pièces d'usure fortement sollicitées. Elles le sont à un tel point que leur durée de service limite le temps de coulée.It finds its main application in the steel industry in continuous casting installations for the placement in alignment of the axis of the tap hole of a metallurgical container, under the latter, interchangeable pour tubes. The pouring tubes intended to lead the molten metal into a mold or a mold well, are wear parts which are highly stressed. They are so so that their service life limits the casting time.
Par le document EP-A-0192019, on connaît un dispositif d'amenée et d'échange d'un tube de coulée à plaque rapportée mobile pour conteneur sidérurgique ou métallurgique obturable par le fond à l'aide d'une quenouille ou d'une fermeture coulissante.Document EP-A-0192019 discloses a device for supplying and exchanging a pouring tube with a movable attached plate for a steel or metallurgical container which can be closed off at the bottom using a stopper or a sliding closure.
Le dispositif d'amenée et d'échange comprend une plaque réfractaire mobile susceptible de coulisser, sous l'action d'un vérin, le long d'une plaque supérieure de référence, depuis une position de chargement jusqu'à une position de service ou une position d'obturation dans l'alignement de l'axe d'un trou de coulée.The supply and exchange device comprises a movable refractory plate capable of sliding, under the action of a jack, along an upper reference plate, from a loading position to a service position or a closed position in alignment with the axis of a tap hole.
Des rails-guides appliquent la plaque mobile, en contact étanche, contre la plaque supérieure de référence sous l'effet d'une poussée vers le haut transmise par une première extrémité de leviers sur lesquels agissent vers le bas à une extrémité opposée des ressorts hélicoïdaux prenant appui sur le bâti du dispositif d'amenée et d'échange.Guide rails apply the movable plate, in sealed contact, against the upper reference plate under the effect of an upward thrust transmitted by a first end of levers on which act downwards at an opposite end of the helical springs taking support on the frame of the supply and exchange device.
Les rails-guides sont parallèles entre eux et forment un plan légèrement incliné d'un angle de 5 à 10° par rapport au plan de référence. Un tel disposi¬ tif permet de remplacer aisément un tube de coulée à plaque rapportée réfractaire mobile sans relever le répartiteur. Un double vérin pneumatique assure le dépla¬ cement linéaire de la plaque mobile portant le tube de coulée. Le tube de remplacement est amené par pivotement autour d'un axe sensiblement horizontal dans le moule ou le puits de lingotière afin de permettre l'échange de tube de coulée sans devoir soulever le répartiteur.The guide rails are parallel to each other and form a slightly inclined plane at an angle of 5 to 10 ° relative to the reference plane. Such a device makes it easy to replace a pouring tube with a movable refractory insert without raising the distributor. A double pneumatic cylinder ensures the linear displacement of the movable plate carrying the pouring tube. The replacement tube is brought by pivoting around a substantially horizontal axis in the mold or the mold well in order to allow the exchange of pouring tube without having to lift the distributor.
Dans ce dispositif connu, la plaque mobile destinée à coulisser suivant une trajectoire rectili- gne le long de la plaque supérieure de référence forme par rapport à celle-ci une surface inclinée dont l'inclinaison est déterminée par la pente de la trajectoire des rails-guides.In this known device, the movable plate intended to slide along a rectilinear trajectory along the upper reference plate forms with respect thereto an inclined surface whose inclination is determined by the slope of the trajectory of the rails. guides.
L'inclinaison des rails-guides par rapport au plan de référence de la plaque supérieure permet d'obtenir un serrage progressif de la plaque mobile rapportée au tube de coulée lorsqu'on amène celui-ci dans l'alignement de l'orifice de coulée mais présen¬ te l'inconvénient de rendre non-étanche la jonction des deux plaques au voisinage de l'orifice de coulée. En effet, le parallélisme de la plague de fond et de la plaque mobile portant le tube de coulée n'est pas parfait lors de l'engagement de la plaque mobile dans la zone d'étanchéité entourant l'orifice de coulée. Du métal liquide peut s'infiltrer entre la plaque supérieure de référence et la plaque mobile. En durcissant, le métal infiltré forme une croûte qui altère la planéité des surfaces de contact et risque de provoquer le coincement de la plaque mobile et d'être une cause de non-étanchéité d'une zone de contact des deux plaques au voisinage immédiat de l'orifice de coulée. La présente invention vise à pallier cet inconvénient et propose dans ce but un dispositif qui permet d'assurer le parallélisme de la plaque mobile de remplacement avec la plaque supérieure de référence, dès recouvrement du trou de coulée par ladite plaque mobile amenée dans le voisinage immédiat de l'orifice de coulée par un vérin pneu¬ matique.The inclination of the guide rails relative to the reference plane of the upper plate makes it possible to obtain a progressive tightening of the movable plate attached to the pouring tube when the latter is brought into alignment with the pouring orifice. but presents the drawback of making the junction of the two plates not leaktight in the vicinity of the pouring orifice. Indeed, the parallelism of the bottom plague and of the movable plate carrying the pouring tube is not perfect during the engagement of the movable plate in the sealing zone surrounding the pouring orifice. Liquid metal can seep between the upper reference plate and the movable plate. Upon hardening, the infiltrated metal forms a crust which alters the flatness of the contact surfaces and risks causing the movable plate to jam and being a cause of non-sealing of a contact area of the two plates in the immediate vicinity of the pouring orifice. The present invention aims to overcome this drawback and proposes for this purpose a device which ensures the parallelism of the replacement movable plate with the upper reference plate, as soon as the tap hole is covered by said movable plate brought into the immediate vicinity of the pouring orifice by a pneumatic cylinder.
Le dispositif d'amenée et d'échange d'un tube de coulée est du type décrit dans le premier paragraphe du présent mémoire. Ce dispositif est caractérisé en ce qu'il comporte des moyens pour conférer à la plaque mobile un mouvement de basculement autour d'une arête horizontale frontale de la plaque mobile engagée dans la zone voisine de l'orifice de coulée, de manière à rendre la plaque mobile strictement parallèle à la face inférieure de la plaque supérieure. Ce mouvement de basculement rend possible le contact étanche de la plaque mobile contre la plaque supérieure et prévient toute fuite de métal liquide lors de l'échange de tube de coulée ou lors de l'obturation de l'orifice de coulée par une plaque mobile d'obturation.The device for supplying and exchanging a pouring tube is of the type described in the first paragraph of this specification. This device is characterized in that it comprises means for imparting to the movable plate a tilting movement around a frontal horizontal edge of the movable plate engaged in the area adjacent to the pouring orifice, so as to make the movable plate strictly parallel to the underside of the upper plate. This tilting movement makes possible the sealed contact of the movable plate against the upper plate and prevents any leakage of liquid metal during the exchange of the pouring tube or when the pouring orifice is closed by a movable plate d shutter.
Suivant une particularité de l'invention, les moyens destinés à conférer à la plaque mobile un mouvement de basculement consistent en un levier agissant vers le haut sur une partie postérieure de la plaque mobile opposée à l'arête frontale engagée dans la zone d'étanchéité entourant l'orifice de coulée de la plaque de référence.According to a feature of the invention, the means intended to give the movable plate a tilting movement consist of a lever acting upwards on a rear part of the movable plate opposite the front edge engaged in the sealing zone surrounding the pouring hole of the reference plate.
Dans une première forme de réalisation parti- culière de l'invention, le levier est une portion de rail-guide fixée par une extrémité éloignée du trou de coulée à un culbuteur comprenant, un manneton articulé autour d'un arbre horizontal, contre lequel appuie un piston repoussé par un ressort hélicoidal dès relâchement du piston par un double vérin pneumatique destiné à faire glisser une plaque mobile le long des rails-guides.In a first particular embodiment of the invention, the lever is a portion of guide rail fixed by an end remote from the taphole to a rocker arm comprising, a crank articulated around a horizontal shaft, against which a piston pushed back by a helical spring as soon as the piston is released by a double pneumatic cylinder intended to slide a movable plate along the guide rails.
Dans une seconde forme de réalisation parti- culière de l'invention, le culbuteur comprend un premier bras fixé dans une direction normale à la surface d'une bague cylindrique montée sur un arbre horizontal autour duquel est enroulé un ressort de torsion fixé par une première extrémité dans la bague et par une seconde extrémité dans un bâti fixe de dispositif d'amenée, la bague étant déplacée angulai- rement autour de l'arbre à l'encontre du ressort sous l'action de la poussée exercée par le double vérin sur un second bras s'étendant perpendiculaire- ment au premier bras dans un plan radial de la bague cylindrique.In a second particular embodiment of the invention, the rocker arm comprises a first arm fixed in a direction normal to the surface of a cylindrical ring mounted on a horizontal shaft around which is wound a torsion spring fixed by a first end in the ring and by a second end in a fixed frame of the supply device, the ring being angularly displaced around the shaft against the spring under the action of the thrust exerted by the double jack on a second arm extending perpendicular to the first arm in a radial plane of the cylindrical ring.
Ces particularités et détails de l'inven¬ tion ainsi que d'autres apparaîtront au cours de la description détaillée suivante dans laquelle il est fait référence aux dessins ci-annexés. Ces dessins illustrent deux formes de réalisation de l'invention, donnée à titre d'exemples illustrâtifs et non limita¬ tifs.These features and details of the invention and others will become apparent from the following detailed description in which reference is made to the accompanying drawings. These drawings illustrate two embodiments of the invention, given by way of illustrative and nonlimiting examples.
Dans ces dessinsIn these drawings
la figure 1 est une vue en bout d'un dispositif d'amenée et d'échange selon l'invention d'un tube de coulée disposé sous un récipient de coulée; la figure 2 est une vue en élévation latérale à plus grande échelle du dispositif d'amenée et d'échange montré dans la figure 1 présentant un rail-guide en position de chargement;Figure 1 is an end view of a supply and exchange device according to the invention of a pouring tube disposed under a pouring container; Figure 2 is a side elevational view on a larger scale of the supply and exchange device shown in Figure 1 having a guide rail in the loading position;
la figure 3 est une vue en élévation latérale analogue à celle de la figure 2 comprenant un rail-guide en position relevée;Figure 3 is a side elevation view similar to that of Figure 2 comprising a guide rail in the raised position;
la figure 4 est une vue du dessous du dispositif d'amenée montré dans- la figure 3;Figure 4 is a bottom view of the feed device shown in Figure 3;
la figure 5 est une vue en perspective avec arra¬ chement partiel, du dispositif d'amenée et d'échange montré dans la figure 2, muni d'une première forme de réalisation d'un culbuteur selon l'invention, montré en position basse d'attente;Figure 5 is a perspective view with partial arra¬, of the supply and exchange device shown in Figure 2, provided with a first embodiment of a rocker arm according to the invention, shown in the low position waiting;
la figure 6 est une vue en perspective du dispositif montré dans la figure 1, le culbuteur ayant actionné le rail-guide en position relevée;Figure 6 is a perspective view of the device shown in Figure 1, the rocker having actuated the guide rail in the raised position;
la figure 7 est une vue éclatée en perspective d'une seconde forme de réalisation d'un culbuteur selon l'invention;Figure 7 is an exploded perspective view of a second embodiment of a rocker arm according to the invention;
la figure 8 est une vue en perspective partiellement arrachée du culbuteur montré à la figure 5, occupant une position basse; etFigure 8 is a partially cutaway perspective view of the rocker arm shown in Figure 5, occupying a low position; and
la figure 9 est une vue en perspective semblable à celle de la figure 6, montrant le culbuteur en position relevée. Dans ces figures, les mêmes notations de réfé¬ rence désignent des éléments identiques ou analogues.Figure 9 is a perspective view similar to that of Figure 6, showing the rocker arm in the raised position. In these figures, the same reference references designate identical or analogous elements.
La figure 1 montre un dispositif d'amenée et d'échange de tube de coulée selon l'invention, désigné dans son ensemble par le signe de référence 1, monté sous un répartiteur de coulée 5 au voisinage du trou de coulée 7.FIG. 1 shows a device for supplying and exchanging a pouring tube according to the invention, generally designated by the reference sign 1, mounted under a tapping distributor 5 in the vicinity of the tapping hole 7.
Le répartiteur peut éventuellement être déjà muni d'un dispositif de fermeture coulissante. Géné¬ ralement l'obturateur est simplement une quenouille (non montrée). Le dispositif 1 est destiné à permet¬ tre l'amenée d'un tube de coulée de réserve 2 rappor¬ té à une plaque mobile 3, en position de chargement 14, et le remplacement d'un tube 2' usé, rapporté à une plaque mobile 3 ' , en position de service 14 ' . (Figure 2 )The distributor can possibly already be fitted with a sliding closing device. Generally the shutter is simply a stopper (not shown). The device 1 is intended to allow the supply of a reserve pouring tube 2 compared to a movable plate 3, in the loading position 14, and the replacement of a worn tube 2 ′, related to a movable plate 3 ', in service position 14'. (Figure 2)
Les tubes de coulée 2, 2', rapportés chacun à une plaque mobile 3, 3', glissent le long d'une plague supérieure de référence 6 appliquée sous le répartiteur de coulée 5, contre une busette interne 39 maintenue en place par une brique de siège 18. L'étanchéité entre la busette interne 39 et la plaque de référence est assurée par un collier d'étanchéité 19.The pouring tubes 2, 2 ', each attached to a movable plate 3, 3', slide along an upper reference ring 6 applied under the casting distributor 5, against an internal nozzle 39 held in place by a brick of seat 18. The seal between the internal nozzle 39 and the reference plate is ensured by a sealing collar 19.
La plaque supérieure de référence 6 est for¬ mée éventuellement de plusieurs éléments réfractaires indépendants. L'élément réfractaire entourant le trou de coulée est éventuellement muni, sur une face inférieure, autour d'un orifice de coulée 27, d'une rainure 40 reliée à un conduit 41 d'alimentation en argon. Deux rails-guides 9 présentent une course inclinée par rapport à la plaque de référence 6.The upper reference plate 6 is optionally formed of several independent refractory elements. The refractory element surrounding the taphole is optionally provided, on a lower face, around a pouring orifice 27, with a groove 40 connected to a duct 41 for supplying argon. Two guide rails 9 have an inclined stroke relative to the reference plate 6.
De manière connue en soi, comme décrit dans le document EP-A-0192019, les rails-guides 9 sont divisés en deux tronçons de rail fixes 9' solidaires d'un bâti destiné à être monté sous le répartiteur de coulée 5 au voisinage du trou de coulée 7 et trois tronçons de rail mobiles 9" et disposés entre les deux tronçons de rail fixes respectifs dans leur prolongement mutuel.In a manner known per se, as described in document EP-A-0192019, the guide rails 9 are divided into two fixed rail sections 9 ′ secured to a frame intended to be mounted under the tundish 5 in the vicinity of the tap hole 7 and three movable rail sections 9 "and disposed between the two respective fixed rail sections in their mutual extension.
Les tronçons de rails-guides mobiles 9" sont montés chacun à l'extrémité d'un levier pivotant autour d'un axe AA' . Chaque levier est soumis à son extrémité opposée à l'action d'un ressort 10 qui en repoussant cette extrémité opposée vers le bas, applique les tronçons de rail mobiles vers le haut.The sections of movable guide rails 9 "are each mounted at the end of a lever pivoting about an axis AA '. Each lever is subjected at its end opposite to the action of a spring 10 which pushes this opposite end down, apply the movable rail sections upwards.
La force exercée par les rails -guides 9" mobiles sur chacune des plaques mobiles associées au tube de coulée 2 se déplaçant le long desdits rails-guides fixes 9' et mobiles 9" augmente au fur et à mesure que lesdites plaques se rapprochent du trou de coulée 7.The force exerted by the guide rails 9 "movable on each of the movable plates associated with the pouring tube 2 moving along said fixed guide rails 9 ′ and movable 9" increases as said plates approach the hole casting 7.
La pente des rails-guides 9 fait en sorte qu'on obtient un serrage progressif de la plaque mobile 3 d'un tube de coulée 2 contre la plaque supérieure de référence 6 lorsque l'un quelconque des tubes de coulée 2, 2' est proche du trou de coulée 7. Ce serrage décroît lorsque la plaque mobile 3 s'en écarte, permettant un retrait aisé de la plaque sus¬ dite en position de dégagement 17 e -l'au re côté du trou de coulée 7. Lors de l'engagement de la plaque mobile 3 dans la zone d'êtanchéité entourant le trou de coulée 7, la plaque mobile 3 repose sur les rails-guides 9 et présente par rapport à la plaque supérieure de référence 6 une inclinaison relativement faible mais suffisante pour être la cause d'une infiltration de métal liquide entre la plaque supérieure de référence 6 et la plaque mobile 3.The slope of the guide rails 9 makes it possible to obtain a progressive tightening of the movable plate 3 of a pouring tube 2 against the upper reference plate 6 when any of the pouring tubes 2, 2 'is close to the taphole 7. This tightening decreases when the movable plate 3 deviates from it, allowing easy removal of the above-mentioned plate in the release position 17 e -l'au re side of the taphole 7. When the movable plate 3 is engaged in the sealing zone surrounding the tap hole 7, the movable plate 3 rests on the guide rails 9 and has a relatively small inclination relative to the upper reference plate 6 but sufficient to cause liquid metal to infiltrate between the upper reference plate 6 and the movable plate 3.
La plaque mobile 3, pourtant appliquée vers le haut contre la plaque supérieure de référence 6, sous la poussée de leviers 12, 12' soumis chacun à l'action de ressorts 10, 10' montés à une distance suffisante du trou de coulée 7, pour les protéger de la chaleur intense du métal en fusion, n'assure pas une êtanchéité parfaite tant que le parallélisme de la plaque mobile 3 avec la plaque supérieure de référence 6 n'est pas assuré.The movable plate 3, however applied upwards against the upper reference plate 6, under the thrust of levers 12, 12 'each subjected to the action of springs 10, 10' mounted at a sufficient distance from the tap hole 7, to protect them from the intense heat of the molten metal, does not provide a perfect seal until the parallelism of the movable plate 3 with the upper reference plate 6 is not ensured.
Ce n'est qu'en fin d'opération d'amenée et de chargement du tube de coulée 2 que le parallélisme des plaques est parfait et que la force exercée par les rails-guides 9 sur la plaque mobile rapportée au tube de coulée 2', se déplaçant le long desdits rails 9 est suffisante puisqu'elle augmente au fur et à mesure que les plaques mobiles se rapprochent du trou de coulée 7. Cette poussée vers le haut n'applique de manière étanche les plaques mobiles 3 et 3' du tube de coulée usé 2' et du tube de réserve 2 contre le plan de glissement de la plaque de référence 6, qu'au moment où l'orifice ménagé dans la plaque mobile 3' se trouve dans 1'alignement de 1'axe LL' du trou de coulée 7 (Figure 3) . Comme illustré dans la figure 4, le déplacement linéaire des plaques mobiles 3, 3' est assuré par une tige de poussée 15 escamotable actionnée par une paire de vérins pneumatigues 16, 16' disposés en parallèle afin de fournir la force nécessaire pour permettre un chargement rapide du tube de coulée 2 en utilisant au mieux le faible espace disponible en hauteur. Les tiges 11 et 11' des vérins 16 et 16 ' sont reliées entre elles par un châssis mobile 13 portant la tige de poussée 15 escamotable.It is only at the end of the supply and loading operation of the pouring tube 2 that the parallelism of the plates is perfect and that the force exerted by the guide rails 9 on the movable plate attached to the pouring tube 2 ', moving along said rails 9 is sufficient since it increases as the movable plates approach the tap hole 7. This upward push does not seal the movable plates 3 and 3' of the worn pouring tube 2 'and of the reserve tube 2 against the sliding plane of the reference plate 6, that at the moment when the orifice formed in the movable plate 3' is in alignment with the axis LL 'of tap hole 7 (Figure 3). As illustrated in FIG. 4, the linear displacement of the mobile plates 3, 3 'is ensured by a retractable push rod 15 actuated by a pair of pneumatic jacks 16, 16' arranged in parallel in order to provide the force necessary to allow loading casting tube 2 quickly, making the best use of the small space available in height. The rods 11 and 11 'of the cylinders 16 and 16' are interconnected by a movable frame 13 carrying the retractable push rod 15.
Le dispositif selon l'invention a pour but d'assurer le parallélisme entre la plague mobile 3 et la plaque supérieure de référence 6 dès le début de l'opération d'amenée et de chargement du tube de coulée de réserve 2.The purpose of the device according to the invention is to ensure parallelism between the movable plague 3 and the upper reference plate 6 from the start of the operation of supplying and loading the reserve pouring tube 2.
Dans ce but, le dispositif selon l'invention comprend un culbuteur 20. Le culbuteur 20 comporte un cadre 21 fixé au bâti 4 du dispositif d'amenée et de chargement du tube de coulée, dans le prolongement d'un des vérins de poussée 16, 16', de préférence, du vérin 16' le plus proche des rails-guides 9 du dispositif d'amenée.For this purpose, the device according to the invention comprises a rocker arm 20. The rocker arm 20 comprises a frame 21 fixed to the frame 4 of the device for feeding and loading the pouring tube, in the extension of one of the thrust cylinders 16 , 16 ', preferably, of the jack 16' closest to the guide rails 9 of the supply device.
Le cadre 21 abrite un boîtier cylindrique 22 dans lequel est logé un ressort hélicoïdal 23 comprimé sous l'action d'une tête de piston 24 soumise à la poussée du châssis mobile 13 gui relie les tiges du double vérin pneumatique 16, 16' destiné à faire glisser une plaque mobile 3 le long des rails-guides depuis la position de chargement 14 vers la position de service 14'. Avant d'introduire un nouveau tube de coulée 2 dans le dispositif d'amenée et de chargement, le double vérin de poussée 16, 16' amené en position d'extension, déplace le châssis mobile 13 gui vient prendre appui contre la tête du piston 24 du culbuteur 20. La tête du piston 24 du culbuteur 20 comprime le ressort hélicoïdal 23 dans le boîtier 22 et permet à un anneton 38 couplé à un levier coudé 26 de pivoter autour d'un axe horizontal HH' etThe frame 21 houses a cylindrical housing 22 in which is housed a helical spring 23 compressed under the action of a piston head 24 subjected to the thrust of the movable frame 13 which connects the rods of the double pneumatic cylinder 16, 16 'intended to slide a movable plate 3 along the guide rails from the loading position 14 to the service position 14 '. Before introducing a new pouring tube 2 into the supply and loading device, the double push cylinder 16, 16 'brought into the extended position, moves the movable frame 13 which comes to bear against the head of the piston 24 of the rocker arm 20. The head of the piston 24 of the rocker arm 20 compresses the helical spring 23 in the housing 22 and allows an anneton 38 coupled to an elbow lever 26 to pivot about a horizontal axis HH 'and
10 d'abaisser le levier 26 vers une position de chargement dans le prolongement de la légère pente des rails-guide 9. Le bras-pousseur 15 escamotable est retiré et un nouveau tube de coulée 2 posé sur les rails-guides 9 (Figure 5). Le nouveau tube de ••*••• coulée est ensuite placé en position de chargement 14 et le bras-pousseur 15 escamotable est dégagé du châssis mobile 13.10 lower the lever 26 to a loading position in the extension of the slight slope of the guide rails 9. The retractable pusher arm 15 is removed and a new pouring tube 2 placed on the guide rails 9 (Figure 5 ). The new •• * ••• pouring tube is then placed in the loading position 14 and the retractable pusher arm 15 is released from the movable frame 13.
Lors de l'amenée du tube depuis la position 20 de chargement 14 jusqu'à la position de service 14' dans l'axe du trou de coulée 7, sous l'action du double vérin 16, 16',. le châssis mobile 13 s'écarte du culbuteur 20 et relâche la tige du piston 24 du culbuteur 20. La tige de piston 24 est repoussée par 25 le ressort hélicoïdal 23 contre une vis de butée 36 du levier 26 qui pivotè d'une fraction de tour autour de l'arbre horizontal HH' du culbuteur 20 de manière à relever le levier coudé 26 vers le haut.(Figure 6)When the supply tube 20 from the position of load 14 to the operating position 14 'in the axis of the tap hole 7, under the action of double-acting jack 16, 16',. the movable frame 13 moves away from the rocker arm 20 and releases the piston rod 24 from the rocker arm 20. The piston rod 24 is pushed back by the helical spring 23 against a stop screw 36 of the lever 26 which swivels by a fraction of turn around the horizontal shaft HH 'of the rocker arm 20 so as to raise the bent lever 26 upwards (Figure 6)
30 Le relèvement du levier coudé 26 confère à la plague mobile un mouvement de basculement autour d'une arête frontale horizontale de la plague mobile introduite dans la zone d'étanchéité entourant l'orifice de coulée 27. Ce mouvement de basculement rend la plaque mobile 3 strictement parallèle à la face inférieure de la plaque supérieure de référence 6, (Figure 6)The raising of the bent lever 26 gives the movable plague a tilting movement around a horizontal front edge of the movable plague introduced into the sealing zone surrounding the pouring orifice 27. This tilting movement makes the movable plate 3 strictly parallel to the underside of the upper reference plate 6, (Figure 6)
, Le dispositif amène à l'horizontale la plague mobile 3 en relevant la partie de la plaque mobile la plus éloignée de l'orifice de coulée 27, immédiatement après avoir mis en place le tube de coulée 2 rapporté à la plague mobile en position de chargement 14, avant ou pendant gue la plaque mobile, The device brings the movable plague 3 horizontally by raising the part of the movable plate furthest from the pouring orifice 27, immediately after having put in place the pouring tube 2 attached to the movable plague in the position of loading 14, before or during the moving plate
3 glisse vers une position de service 14 ' dans l'alignement de l'axe de coulée LL' du trou de coulée 7.3 slides to a service position 14 'in alignment with the pouring axis LL' of the tap hole 7.
Le mouvement de basculement a l'avantage de permettre d'appliguer la plaque mobile 3 pendant la translation sous l'action des vérins pneumatiques 16, 16', de manière étanche contre la plaque supérieure de référence 6 lors du changement de tube. II permet de prévenir toute fuite de métal liguide entre la plague mobile 3 et la plaque supérieure de référence 6 au début de l'opération de changement de tube.The tilting movement has the advantage of making it possible to apply the movable plate 3 during translation under the action of the pneumatic cylinders 16, 16 ′, in leaktight manner against the upper reference plate 6 during the tube change. It makes it possible to prevent any leakage of liquid metal between the movable plague 3 and the upper reference plate 6 at the start of the tube change operation.
Une seconde forme de réalisation du dispositif d'amenée et de chargement d'un tube de coulée 2 est représentée dans la figure 7. Elle comporte un culbuteur 20 comportant deux bras 30 et 31 : un premier bras 30 est un levier s'étendant dans une direction normale à la surface d'une bague cylindrique 32 et le second bras 31 est une patte s'étendant dans une direction tangente à la surface de la bague 32, c'est-à-dire dans un plan radial de la bague 32, et perpendiculairement au levier 30. Le boîtier cylindrigue 32 abrite un ressort de torsion 33 dont les bouts sont ancrés à la bague 32 et au bâti 4 du dispositif d'amenée.A second embodiment of the device for feeding and loading a pouring tube 2 is shown in FIG. 7. It includes a rocker arm 20 comprising two arms 30 and 31: a first arm 30 is a lever extending in a direction normal to the surface of a cylindrical ring 32 and the second arm 31 is a tab extending in a direction tangent to the surface of the ring 32, that is to say in a radial plane of the ring 32 , and perpendicular to lever 30. The cylindrical housing 32 houses a torsion spring 33, the ends of which are anchored to the ring 32 and to the frame 4 of the supply device.
Le châssis mobile 13 du double vérin pneumatique 16, 16* repousse le premier bras 30 vers le bas à .1'encontre du ressort de torsion 33 et ramène, par pivotement autour de l'arbre 34 dans le sens de la flèche X, un levier 26 vers le bas, vers une position dans laquelle l'introduction d'un nouveau tube de coulée 2 est aisée. Le levier 26 est calé sur l'arbre 34 à l'aide d'une vis 35. (Figure 8)The movable frame 13 of the double pneumatic cylinder 16, 16 * pushes the first arm 30 downwards .1 against the torsion spring 33 and brings, by pivoting around the shaft 34 in the direction of the arrow X, a lever 26 downwards, towards a position in which the introduction of a new pouring tube 2 is easy. The lever 26 is fixed on the shaft 34 using a screw 35. (Figure 8)
Lors de l'engagement du nouveau tube de coulée 2 par déplacement linéaire vers et dans la zone d'étanchéité entourant l'orifice de coulée 27 de la plaque de référence 6, le châssis mobile 13 du double vérin 16, 16' s'éloigne de la bague 32 et relâche le premier bras 30 gui, sous l'action du ressort de torsion, pivote en même temps que le second bras 31 et le levier 26 dans le sens de la flèche Y. Le mouvement de pivotement du second bras 31 est limité par la vis de butée 36 (figure 9). En pivotant, le levier 26 déplace vers le haut une partie postérieure de la plague mobile 3, opposée à l'arête frontale déjà engagée dans la zone d'étanchéité entourant l'orifice de coulée 27. Ce mouvement de basculement de la plague mobile 3 autour de son arête horizontale frontale, rend la plaque 3 strictement parallèle à la plaque supérieure de référence 6 et améliore l'étanchéité entre les portions de surface de contact des deux plaques susdites. During the engagement of the new pouring tube 2 by linear displacement towards and in the sealing zone surrounding the pouring orifice 27 of the reference plate 6, the movable frame 13 of the double jack 16, 16 'moves away of the ring 32 and releases the first arm 30 which, under the action of the torsion spring, pivots at the same time as the second arm 31 and the lever 26 in the direction of the arrow Y. The pivoting movement of the second arm 31 is limited by the stop screw 36 (Figure 9). By pivoting, the lever 26 moves upward a rear part of the movable plague 3, opposite to the front edge already engaged in the sealing zone surrounding the pouring orifice 27. This tilting movement of the movable plague 3 around its front horizontal edge, makes the plate 3 strictly parallel to the upper reference plate 6 and improves the seal between the contact surface portions of the two aforementioned plates.

Claims

REVENDICATIONS
1. Dispositif amélioré d'amenée et d'échange (1) d'un tube de coulée (2) pour récipient de coulée (5) de métal par le fond dans lequel une plaque d'obtu¬ ration et/ou un tube de coulée de remplacement (2) rapporté à une plaque mobile (3) est juxtaposé par un rebord transversal commun contre une plaque mobile (3!) portant un tube de coulée (2') à remplacer ou contre une plaque d'obturation à éloigner du trou de coulée, ladite plaque mobile de remplacement (3) et celle à remplacer (3' ) étant montées coulissantes sur des rails-guides (9) aptes à transmettre un effort de poussée vers le haut et à guider le déplacement en translation des plaques (3, 3') et des tubes de coulée (2, 2') parallèlement à eux-mêmes sous l'ac- tion d'un vérin pneumatique (16, 16') dans une direc¬ tion perpendiculaire à l'axe de coulée (L,L'), depuis une position de chargement vers une position de ser¬ vice dans l'axe (L,L') du trou de coulée (7) du réci¬ pient (5) et de la position de service vers une position de dégagement, de manière à permettre l'échange du tube sans soulever le récipient (5), caractérisé en ce qu'il comporte un culbuteur (20) qui actionne un levier (26) entre une position basse de chargement et une position relevée de service de manière à conférer à la plaque mobile (3) un mouve¬ ment de basculement autour d'une arête frontale horizontale de la plaque mobile engagée dans la zone d'étanchéité entourant un orifice de coulée (27) for¬ mé dans une plaque de référence (6), de manière à rendre la plaque mobile (3) strictement parallèle à la face inférieure de la plaque supérieure de réfé- rence (6) .1. Improved device for supplying and exchanging (1) a pouring tube (2) for a metal pouring container (5) through the bottom in which a cover plate and / or a tube replacement casting (2) attached to a movable plate (3) is juxtaposed by a common transverse flange against a movable plate (3 ! ) carrying a pouring tube (2 ') to be replaced or against a closure plate to be removed from the tap hole, said movable replacement plate (3) and that to be replaced (3 ') being slidably mounted on guide rails (9) capable of transmitting an upward thrust force and of guiding the translational movement of the plates (3, 3 ') and pouring tubes (2, 2') parallel to themselves under the action of a pneumatic cylinder (16, 16 ') in a direction perpendicular to the axis of pouring (L, L '), from a loading position to a service position in the axis (L, L') of the tap hole (7) of the container (5) and of the p osition service to a release position, so as to allow the exchange of the tube without lifting the container (5), characterized in that it comprises a rocker arm (20) which actuates a lever (26) between a low position of loading and a raised service position so as to give the movable plate (3) a tilting movement around a horizontal front edge of the movable plate engaged in the area sealing surrounding a pouring orifice (27) formed in a reference plate (6), so as to make the movable plate (3) strictly parallel to the underside of the upper reference plate (6) .
2. Dispositif selon la revendication 1, caracté¬ risé en ce que le culbuteur (20) fait pivoter le levier (26) d'une fraction de tour, de manière que, en position de service, le levier agisse vers le haut sur une partie postérieure de la plaque mobile oppo¬ sée à l'arête frontale engagée dans la zone d'étan¬ chéité entourant l'orifice de coulée (27) de la pla¬ que de référence (6).2. Device according to claim 1, caracté¬ ized in that the rocker arm (20) rotates the lever (26) a fraction of a turn, so that, in the service position, the lever acts upward on a rear part of the movable plate oppo¬ ed to the front edge engaged in the sealing area surrounding the pouring orifice (27) of the reference plate (6).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le levier (26) agit en position basse de chargement dans le prolongement des rails- guides (9) .3. Device according to claim 1 or 2, characterized in that the lever (26) acts in the low loading position in the extension of the guide rails (9).
4. Dispositif selon l'une quelconque des reven¬ dications précédentes, caractérisé en ce que le le¬ vier (26) est fixé par une extrémité éloignée du trou de coulée, à un culbuteur comprenant un manneton (38) articulé autour d'un arbre horizontal (H,H'), le manneton coopérant avec un piston (24) repoussé par un ressort hélicoïdal (22) dès relâchement du piston (24) par un châssis mobile 13 du double vérin pneu a- tiσue (16, 16') destiné à faire glisser une plaσue mo- bile (3, 3') le long des rails-guides (9).4. Device according to any one of the preceding reven¬ dications, characterized in that the le¬ sink (26) is fixed by an end remote from the tap hole, to a rocker arm comprising a crank (38) articulated around a horizontal shaft (H, H '), the crank cooperating with a piston (24) pushed back by a helical spring (22) as soon as the piston (24) is released by a movable frame 13 of the double pneumatic cylinder (16, 16' ) intended to slide a movable plate (3, 3 ') along the guide rails (9).
5. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le culbuteur (20) comprend un manneton (38) couplé à un levier coudé (26), le levier (26) étant pivotant autour d'un axe horizontal fixe (H, H'), lequel levier étant actionné par le manneton (38) déplacé angulairement d'une fraction de tour sous l'action d'un double vérin pneumatique (16,5. Device according to claim 1 or 2, characterized in that the rocker arm (20) comprises a crank (38) coupled to a bent lever (26), the lever (26) being pivotable about a horizontal axis fixed (H, H '), which lever being actuated by the crank (38) angularly displaced by a fraction of a turn under the action of a double pneumatic cylinder (16,
16') destiné à faire glisser une plaque mobile (3) le long des rails-guides (9) d'une position de service dans laquelle le levier (26) agit vers le haut sur une partie postérieure de la plaque mobile (3) opposée à l'arête frontale engagée dans une zone d'étanchéité entourant l'orifice de coulée (27), vers une position inférieure de chargement d'un tube de remplacement (2) à l'encontre d'un ressort hélicoïdal16 ') intended to slide a movable plate (3) along the guide rails (9) from a service position in which the lever (26) acts upwards on a rear part of the movable plate (3) opposite the front edge engaged in a sealing zone surrounding the pouring orifice (27), towards a lower position for loading a replacement tube (2) against a helical spring
(23) qui ramène le levier (26) à la position de service dès relâchement du levier (26) par le double vérin (16, 16').(23) which brings the lever (26) back to the operating position as soon as the lever (26) is released by the double jack (16, 16 ').
6. Dispositif selon la revendication 4, caracté¬ risé en ce que le culbuteur (20) comprend un premier bras (30) fixé dans une direction normale à la surfa¬ ce d'une bague cylindrique (32) montée sur un arbre horizontal autour duquel est enroulé un ressort de torsion (33) fixé par une première extrémité dans la bague (32) et par une seconde extrémité dans le bâti fixe (4) du dispositif d'amenée, la bague (32) étant déplacée angulairement autour de l'arbre à l'encontre du ressort de torsion (33), sous l'action de la poussée exercée par le châssis mobile 13 du double vé¬ rin (16, 16') sur un second bras (32) s'étendant per¬ pendiculairement au levier susdit (26) dans un plan radial par rapport à la bague cylindrique (32). 6. Device according to claim 4, caracté¬ ized in that the rocker arm (20) comprises a first arm (30) fixed in a direction normal to the surface of this cylindrical ring (32) mounted on a horizontal shaft around from which is wound a torsion spring (33) fixed by a first end in the ring (32) and by a second end in the fixed frame (4) of the supply device, the ring (32) being angularly displaced around the 'shaft against the torsion spring (33), under the action of the thrust exerted by the movable frame 13 of the double vé¬ rin (16, 16') on a second arm (32) extending per¬ pendulum to the aforesaid lever (26) in a radial plane relative to the cylindrical ring (32).
EP91911206A 1990-07-04 1991-06-20 Pouring tube insertion and replacement device Expired - Lifetime EP0537195B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/BE1990/000039 WO1992000821A1 (en) 1990-07-04 1990-07-04 Improved pouring tube insertion and replacement device
WOPCT/BE90/00039 1990-07-04
PCT/BE1991/000039 WO1992000822A1 (en) 1990-07-04 1991-06-20 Pouring tube insertion and replacement device

Publications (2)

Publication Number Publication Date
EP0537195A1 true EP0537195A1 (en) 1993-04-21
EP0537195B1 EP0537195B1 (en) 1994-04-20

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Application Number Title Priority Date Filing Date
EP91911206A Expired - Lifetime EP0537195B1 (en) 1990-07-04 1991-06-20 Pouring tube insertion and replacement device

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EP (1) EP0537195B1 (en)
JP (1) JP2991495B2 (en)
KR (1) KR0156228B1 (en)
CN (1) CN1046644C (en)
AR (1) AR247125A1 (en)
AT (1) ATE104577T1 (en)
AU (1) AU650884B2 (en)
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CA (1) CA2086532C (en)
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DE (1) DE69101782T2 (en)
ES (1) ES2051595T3 (en)
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EP1391257A4 (en) * 2001-05-21 2005-08-24 Krosakiharima Corp Dipped nozzle changer and dipped nozzle and closing fire-proof plate used for the dipped nozzle changer

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TR25322A (en) 1993-01-01
WO1992000821A1 (en) 1992-01-23
EP0537195B1 (en) 1994-04-20
YU48510B (en) 1998-09-18
FI925823A (en) 1992-12-22
KR930701251A (en) 1993-06-11
US5351865A (en) 1994-10-04
PT98213A (en) 1993-08-31
ES2051595T3 (en) 1994-06-16
RU2060107C1 (en) 1996-05-20
ATE104577T1 (en) 1994-05-15
WO1992000822A1 (en) 1992-01-23
DE69101782T2 (en) 1994-09-08
PT98213B (en) 1999-02-26
YU116891A (en) 1995-03-27
KR0156228B1 (en) 1998-11-16
JPH05508348A (en) 1993-11-25
AR247125A1 (en) 1994-11-30
CA2086532A1 (en) 1992-01-05
AU7991791A (en) 1992-02-04
FI96391C (en) 1996-06-25
PL168904B1 (en) 1996-05-31
HRP940046B1 (en) 1999-02-28
CA2086532C (en) 2001-06-05
FI96391B (en) 1996-03-15
ZA915170B (en) 1992-04-29
DE69101782D1 (en) 1994-05-26
SI9111168A (en) 1997-08-31
AU650884B2 (en) 1994-07-07
CN1046644C (en) 1999-11-24
FI925823A0 (en) 1992-12-22
CZ286982B6 (en) 2000-08-16
CS198191A3 (en) 1992-02-19
HRP940046A2 (en) 1996-04-30
JP2991495B2 (en) 1999-12-20
CN1057798A (en) 1992-01-15
BR9106616A (en) 1993-06-01

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