EP0379419A1 - Device for supporting and controlling the position of a top bolt in a mould for pressure die casting metallic plate products or slabs - Google Patents

Device for supporting and controlling the position of a top bolt in a mould for pressure die casting metallic plate products or slabs Download PDF

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Publication number
EP0379419A1
EP0379419A1 EP90400114A EP90400114A EP0379419A1 EP 0379419 A1 EP0379419 A1 EP 0379419A1 EP 90400114 A EP90400114 A EP 90400114A EP 90400114 A EP90400114 A EP 90400114A EP 0379419 A1 EP0379419 A1 EP 0379419A1
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EP
European Patent Office
Prior art keywords
spacer
levers
mold
blocks
support
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
EP90400114A
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German (de)
French (fr)
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EP0379419B1 (en
Inventor
Luc Henri Bertin
François Courbier Michel
Léon Chalencon Jean-Pierre
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.)
Creusot Loire SA
Creusot Loire Industrie SA
Clecim SAS
Original Assignee
Creusot Loire SA
Creusot Loire Industrie SA
Clecim SAS
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Application filed by Creusot Loire SA, Creusot Loire Industrie SA, Clecim SAS filed Critical Creusot Loire SA
Priority to AT90400114T priority Critical patent/ATE87849T1/en
Publication of EP0379419A1 publication Critical patent/EP0379419A1/en
Application granted granted Critical
Publication of EP0379419B1 publication Critical patent/EP0379419B1/en
Anticipated expiration legal-status Critical
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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
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/08—Divided ingot moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • the subject of the present invention is a device for supporting and adjusting the position of an upper spacer of a die-casting mold for flat metal products, such as slabs.
  • This mold is carried by a frame and comprises two parallel side walls, each formed by a support provided internally with graphite blocks, a longitudinal lower spacer inserted between the two graphite blocks at the base of these, an anterior spacer whose l the lower end delimits with the adjacent end of the lower spacer a liquid metal inlet orifice inside the mold between the graphite blocks of the side walls and the spacers, a rear spacer inserted between the upper and lower spacers and which determines the width of the flat product.
  • the upper spacer is interposed between the graphite blocks along their upper edges.
  • the side walls are associated with means for transversely displacing them and for clamping against the spacers to form a cavity sealed against liquid metal.
  • the transverse walls are connected to rigid longitudinal beams parallel to said walls, carried by the chassis and movable transversely relative to the latter.
  • the liquid metal can be introduced into the mold from a pocket arranged below the mold and its frame by means of a refractory tube, the lower part of which dips into the liquid metal by filling the pocket, and the l upper end communicates with a nozzle filling at the bottom of the mold.
  • the refractory tube passing through a lid applied in a sealed manner to a tank containing the pocket of liquid metal, the introduction of compressed air at a suitable pressure in the pocket makes it possible to raise the liquid metal inside the tube as far as the mold which it gradually fills.
  • This long-known pressure casting method can be applied in particular to the casting of semi-finished products such as slabs, blooms, billets and rods.
  • semi-finished products such as slabs, blooms, billets and rods.
  • slabs that is to say steel products of large width
  • large molds are used.
  • a die-casting mold of the type concerned by the invention is described in particular by US patent 3,590,904.
  • the width of the spacers in the transverse direction determines the thickness of the flat product to be cast.
  • the position of the upper spacer above the lower spacer determines the width of the slab cast in the mold.
  • This upper spacer has at its front end a bent end portion at a right angle, that is to say which is located in the part of the mold placed above the filling tube of the casting tank.
  • the upper spacer is held by suitable suspension devices at a certain height above and parallel to the lower spacer. It must be possible to adjust the height according to the desired width for the slab to be poured. In the transverse direction it must be able to be positioned suitably as a function of the progressive wear of the facing faces. graphite blocks between which it is clamped, during successive castings. Finally, this upper spacer must be able to be completely retracted to allow the removal of the supporting frames of the used graphite blocks.
  • the invention therefore aims to provide a device for eliminating these various drawbacks and difficulties.
  • the device for supporting and adjusting the upper spacer is mounted on one of the longitudinal beams, and comprises means ensuring a free pendular suspension of the spacer in the horizontal direction.
  • the mounting of the device on a longitudinal beam completely frees the graphite door frames, avoiding cluttering them with the spacer support device when these frames have to be dismantled and when brushing and coating operations on the faces internal graphite blocks must be executed.
  • the free pendular suspension of the upper spacer in the horizontal direction allows it to be pressed freely without constraint on the graphite faces, the side walls of the mold being pressed transversely against the spacers by suitable hydraulic and elastic devices .
  • the suspension means comprise levers distributed along the beam and mounted thereon rotatably around substantially vertical axes, and screw jacks carried by the ends of the levers and of which the screws, supporting the upper spacer, are mounted in complementary ball joints allowing free horizontal movement of the spacer, the jacks being moreover arranged in a substantially vertical direction in order to be able to raise or lower the spacer.
  • Each screw jack is thus provided with a first ball joint crossed by the screw and allowing for the latter and for the upper spacer a slight free angular movement in all directions, and with a second ball joint of articulation between the end of the screw and a part secured to the spacer.
  • this adjustment and support device for the upper spacer makes it possible to completely retract the latter when the graphite door frame corresponding to the beam supporting the adjustment device must be removed. This operation can therefore be performed without being hindered by the size of the spacer support device.
  • the installation for pressure casting of metallic flat products to which the invention relates comprises (Fig. 1) a pocket 1 of liquid metal 2 disposed in a tank 4 supported by a carriage 10, as well as a mold 5 resting on a chassis 6 itself supported by columns 7 and a hydraulic cylinder 8.
  • the tank 4 is provided with a sealed cover 9 crossed by a refractory tube 11, the lower end of which dips into the liquid metal 2, and the upper end of which passes through the cover 9 at a device known per se, allowing to ensure a tight junction between an opening 12 for filling the mold 5 and the tube 11.
  • An apparatus 70 makes it possible to send inside the pocket 1 compressed air under suitable pressure, which expels the liquid metal 2 in the tube 11 to make it penetrate inside the mold 5, in order to pour a flat metallic product such as a slab.
  • Fig.1 the assembly consisting of the mold 5 and its supporting frame 6 is shown horizontal.
  • the jack 8 makes it possible to tilt the frame 6 and the mold 5 around a horizontal axis 30 transverse to the plane of the figure, in order to tilt slightly the mold 5 to bring it into its position allowing the pouring of the liquid metal 2, in a manner known per se.
  • the mold 5 comprises two parallel side walls 25 each consisting of a support 30 and a graphite block 31 partially housed in the support 30, which in the example shown has in section a C shape whose upper and lower branches partially enclose the block 31 therebetween.
  • the mold 5 also comprises, disposed between the internal faces 32 facing the two blocks 31, a lower longitudinal spacer 21 placed at the base of the blocks 31, an anterior spacer 22, which extends vertically when the mold 5 is placed in a horizontal position (Fig. 1) and is positioned so that its lower end delimits with the adjacent end of the lower spacer 21 the orifice 12 of liquid metal inlet inside the mold 5 between the graphite blocks 31.
  • a rear spacer 23 is interposed between the lower spacer 21 and an upper spacer 20.
  • the rear spacer 23 determines the width of the flat product to be cast, and is slidably movable between the spacers 20 and 21 by a device 17, for adjust the length of the flat product to be cast, this device 17 being carried by the chassis 6.
  • the upper spacer 20 is arranged opposite the upper part of the blocks 31 at a height above the lower spacer 21, which determines the width of the flat product to be poured.
  • the upper spacer 20 comprises, opposite the upper end of the front spacer 22, an end portion 20b bent at a right angle upward, which delimits with the upper end of the spacer 22 an ascending channel 15 into which the cast metal can penetrate at the end of filling of the mold 5. This channel 15 puts the interior volume of the mold 5 into communication with a shell (not shown) filled at the end of casting by a metal counterweight liquid in which, after solidification of the slab, recession may occur.
  • the lower spacer 21 is supported by the frame 6 and arranged in the longitudinal direction of the slab to be poured.
  • the spacers 20, 21, 22, 23 all have the same thickness, which corresponds to the thickness of the flat cast product.
  • the graphite blocks 31 of the walls 25 are pierced with channels 33 (FIG. 2) making it possible to receive devices for cooling the blocks 31 by spraying water.
  • the chassis 6 comprises (Fig. 1 and 3A-3B) a central spar 26 on the upper surface of which the lower spacer 21 is supported, as well as two transverse elements 36 and 37 in the form of C or U.
  • These ends support are connected to their lower part by support rails 38a, 38b parallel to the beam 26 and which improve the rigidity of the chassis 6.
  • the rails 38a, 38b also provide support surfaces improving the stability of the mold 5, resting in the casting position on the support columns 7 located laterally at the level of the side members 38a, 38b.
  • the side walls 25 are associated with means for transverse displacement of these and for clamping against the spacers 20 to 23 to form a liquid metal tight cavity between the latter and the blocks 31.
  • the walls 25 are connected to rigid longitudinal beams 40 extending substantially over the entire length of the mold 5 parallel to the walls 25, and which are each supported by a carriage 41 provided with rollers 42 for rolling on transverse tracks formed on a support rail 43 carried by the chassis 6, and on an upper plate 44 fixed to the rectilinear part of the transverse elements 36, 37.
  • the means for moving and clamping the walls 25 comprise four hydraulic jacks 45 each mounted on a support end such as 37a, 37b of the elements 36, 37, forming caps for fixing the bodies of the jacks 45.
  • the rods 45a of the latter are connected to the corresponding beam 40 at n iveau of the structural element 36, 37, and the forces exerted by the jacks 45 are transmitted to the walls 25 by elastic connecting devices 59 placed transversely in the beams 40 above and below the jacks 45.
  • Each connecting device 59 comprises for example a rod 57 passing through a bore of the beam 40 and secured at its ends with, on the one hand the beam 40 and with the associated support 30, as well as a helical spring 58 disposed coaxially with each rod 57 and taking support by its ends on the housing funds of the latter.
  • transverse elements 36 and 37 are connected by torsion bars (not visible in the Figures) parallel to the beams 40 and to the walls 25, sets of connecting rods articulated connecting the torsion bars to each beam 40 associated.
  • the pressure casting installation shown in the drawings also comprises a device 27 for supporting and adjusting the position of the upper spacer 20, which will now be described.
  • the device 27 is mounted on one of the beams 40 and comprises means ensuring a free pendular suspension of 1 spacer 20 in the horizontal direction, in particular in the transverse direction of the mold 5 (arrows F1 and F2 in Fig. 4) .
  • These means comprise, in the example described, levers 51 distributed along the beam 40 and mounted thereon rotatably around substantially vertical axes 52.
  • the levers 51 are three in number arranged at intervals equal along the beam 40.
  • Each axis 52 is rotatably mounted in rolling bearings 53a, 53b, advantageously equipped with rollers 54 (Fig.4).
  • the lower bearing 53b is fixed to the chassis 60 by any suitable means.
  • the upper bearing 53a is for its part fixed in a removable manner on the frame 60 carried by the beam 40, to which it is fixed by screws 55 and nuts 56.
  • each lever 51 opposite the axis 52 carries a screw jack 61 which supports the lower spacer 20.
  • the connection between the lower end of the screw 62 and the spacer 20 is ensured by a piece of revolution 63 receiving said end and a ball joint 64 crossed by an axis 64a (Fig.4 and 4A).
  • the ball joint 64 is mounted in corresponding bearing surfaces of the lower end of the part 63.
  • Bracket 64a Hanging from the axis 64a is a bracket 64b secured to an elongated part 65a of a device 65 comprising ears 65b for retaining the part 65a, these ears being fixed to the spacer 20 by bolts.
  • the assembly of the spacer 20 of the device 65, of the stirrup 64b and of the axis 64a can oscillate with the ball joint 64, the two arms of the stirrup 64b being for this purpose slightly spaced from the end of Exhibit 63.
  • Each screw 62 is further mounted in a spherical ball joint 66 housed inside the body of the jack 61, and which allows the screw 62 a slight angular movement in all directions.
  • Each ball joint 66 is therefore complementary to the ball joint 64 to ensure with the latter a free pendular suspension of the spacer 20, allowing the latter, within certain limits, a free horizontal movement once its height determined by the position of the screw 62.
  • the cylinders 61 are arranged in a substantially vertical direction, in order to be able to raise or lower the spacer 20. These cylinders 61 are connected by a horizontal bar 67 on which are placed motors 68 for controlling the cylinders 61 by means of transmissions 69 articulated on the one hand on the motors 68 and on the other hand on the bodies of the cylinders 61.
  • the suspension device 27 is also equipped with means for controlling the angular position of the levers 51 to adjust the transverse position of the spacer 20 between the graphite blocks 31.
  • these means comprise a double-acting cylinder 71 arranged on the frame 60 between two axes 52 (FIG. 5), and the opposite ends of which are articulated on respective connecting rods 72, 73 secured in rotation to the corresponding axes 52.
  • the jack 71 forms with the two associated levers 51 and the bar 67 an articulated parallelogram, on the one hand on the axes 52 integral with the levers 51 and on the other hand at the junctions of the levers 51 and of the jacks 61.
  • the actuation of the jack 71 therefore makes it possible to angularly move all of the three levers 51 as well as the screw jacks 61 for transversely displacing the spacer 20.
  • the device 27 is provided with a stop 74 for holding the levers 51 in their angular position controlled by the jack 71, and consequently for the spacer 20 in its corresponding transverse position between the blocks 31, depending on the dimensions of those and the format of the product to be poured.
  • the stop 74 cooperates with the central lever 51 and comprises a block (FIG. 6) with several faces, for example four of different inclinations.
  • the block 74 is removably mounted on the chassis 60 rotatably around an axis 75 carried by the latter.
  • a blind hole for receiving a lug 76, which can be introduced, depending on the face of the block 74 chosen to serve as a support for the lever 51, in one of four corresponding notches 77, 78, 79 and 81 formed in the respective faces of the block 74.
  • the block 74 is removed from the axis 75, then it is repositioned on this axis with the angular orientation chosen, and the lug 76 is introduced into the notch on the face opposite the lever 51, in order to block the stop 74 in rotation and to maintain the upper spacer 20 in the chosen transverse position.
  • the side walls 25 are brought closer to one another so that the blocks 31 enclose by their internal faces 32 the spacers 20 to 23, the upper spacer 20 having, in height, the position shown in Fig. 3A.
  • the section of the slab 55 which extends in height between the upper 20 and lower spacers 21.
  • the spacer 20 is brought into the desired transverse position above the blocks 31 by the double-acting cylinder 71 and the levers 51, then lowered between them by the screw cylinders 61 controlled by the motors 68, to the height above the lower spacer 21 corresponding to the width of the flat product to pour.
  • the stop 74 maintains in position the articulated assembly formed by the levers 51 and the bar 67.
  • Fig.5 there are shown in broken lines two possible positions 20c and 20d of the spacer 20, linked to corresponding angular positions of the levers 51.
  • the mounting of the suspension device 27 on a longitudinal beam 40 for clamping the mold 5, its articulated parallelogram structure controlled by the double-acting cylinder 71 and the complementary ball joints 64 and 66 of each screw jack 61, allow the necessary displacements of the upper spacer 20 so that in all circumstances are possible: - the retraction of the spacer 20, that is to say its putting out of service position below the supports 30 by pivoting of the levers 51 around their axes 52 on command of the jack 71, in order to allow removal support frames 30 without being hindered by the size of the suspension device 27.
  • the free pendulum suspension of the upper spacer 20 it can freely be pressed without constraint on the faces 32 of the graphite blocks 31.
  • the pendulum assembly therefore makes the spacer 20 free horizontally and has the results : - On the one hand, compensation for the movement due to the crushing of the springs 58 of the elastic devices 59 when the mold 5 is closed, by "rocking" of the spacer 20 on the two sets of ball joints 64,66. This free movement allows tightening effective of the spacer 20 between the free faces 32 of the blocks 31, without forcing on the mechanism.
  • a global adjustment movement of the suspension device 27 makes it possible to adjust the position of the spacer 20 as a function of the wear of the faces 32 of the blocks 31, this adjustment being periodic in this die casting.
  • the invention is not limited to the embodiment described and can include numerous variant embodiments.
  • the number of levers 51 can vary as a function of the length of the walls 25, and any other equivalent stop system could replace the stop 74.
  • the jacks 61 and 71 can be replaced by any equivalent means ensuring transverse adjustment and free pendulum suspension of the upper spacer 20.

Abstract

PCT No. PCT/FR90/00032 Sec. 371 Date Sep. 10, 1991 Sec. 102(e) Date Sep. 10, 1991 PCT Filed Jan. 16, 1990 PCT Pub. No. WO90/07998 PCT Pub. Date Jul. 26, 1990.This device (27) for suspending the upper spacer (20) is carried by a longitudinal beam (40) for clamping the walls (25) of the mould (5), each wall (25) consisting of a support frame (30) and a graphite block (31); the spacer (20) and the other spacers are clamped between the blocks (31) by the beams (40) actuated by the jacks (45), the slabs being cast between the blocks (31) and the four spacers; the device (27) comprises levers (51) which are mounted, so as to rotate, on the beam (40) and which carry screw jacks (61) connected by a bar (67) and which support the upper spacer (20); the angular position of the levers (51), controlled by a dual-action jack, determines the transverse position of the spacer (20) and the screw jacks (61), each provided with a double pivot, provide the spacer (20) with free pendular suspension. This mounting facilitates handling and maintenance operations of the mould, (5), particularly the removal of the supports (30) of the blocks (31).

Description

La présente invention a pour objet un dispositif de support et de réglage de la position d'une entretoise supérieure d'un moule de coulée sous pression de produits plats métalliques, tels que des brames.The subject of the present invention is a device for supporting and adjusting the position of an upper spacer of a die-casting mold for flat metal products, such as slabs.

Ce moule est porté par un châssis et comprend deux parois latérales parallèles, formées chacune par un support muni intérieurement de blocs de graphite, une entretoise inférieure longitudinale in­tercalée entre les deux blocs de graphite à la base de ceux-ci, une entretoise antérieure dont l'extrémité inférieure délimite avec l'extrémité adjacente de l'entretoise inférieure un orifice d'entrée de métal liquide à l'intérieur du moule entre les blocs de graphite des parois latérales et les entretoises, une entretoise arrière intercalée entre les entretoises supérieure et inférieure et qui détermine la largeur du produit plat.This mold is carried by a frame and comprises two parallel side walls, each formed by a support provided internally with graphite blocks, a longitudinal lower spacer inserted between the two graphite blocks at the base of these, an anterior spacer whose l the lower end delimits with the adjacent end of the lower spacer a liquid metal inlet orifice inside the mold between the graphite blocks of the side walls and the spacers, a rear spacer inserted between the upper and lower spacers and which determines the width of the flat product.

L'entretoise supérieure est intercalée entre les blocs de graphite le long de leurs bords supé­rieurs. Les parois latérales sont associées à des moyens de déplacement transversal de celles-ci et de serrage contre les entretoises pour former une cavité étanche au métal liquide. A cet effet les parois transversales sont reliées à des poutres longitudi­nales rigides parallèles auxdites parois, portées par le châssis et déplaçables transversalement par rapport à ce dernier.The upper spacer is interposed between the graphite blocks along their upper edges. The side walls are associated with means for transversely displacing them and for clamping against the spacers to form a cavity sealed against liquid metal. For this purpose, the transverse walls are connected to rigid longitudinal beams parallel to said walls, carried by the chassis and movable transversely relative to the latter.

Le métal liquide peut être introduit dans le moule à partir d'une poche disposée au dessous du moule et de son châssis par l'intermédiaire d'un tube réfractaire dont la partie inférieure plonge dans le métal liquide en remplissant la poche, et dont l'ex­trémité supérieure communique avec une busette de remplissage disposée à la partie inférieure du moule. Le tube réfractaire traversant un couvercle appliqué de manière étanche sur une cuve contenant la poche de métal liquide, l'introduction d'air comprimé à une pression convenable dans la poche permet de faire monter le métal liquide à l'intérieur du tube jusque dans le moule qu'il remplit progressivement.The liquid metal can be introduced into the mold from a pocket arranged below the mold and its frame by means of a refractory tube, the lower part of which dips into the liquid metal by filling the pocket, and the l upper end communicates with a nozzle filling at the bottom of the mold. The refractory tube passing through a lid applied in a sealed manner to a tank containing the pocket of liquid metal, the introduction of compressed air at a suitable pressure in the pocket makes it possible to raise the liquid metal inside the tube as far as the mold which it gradually fills.

Ce procédé de coulée sous pression, connu depuis longtemps, peut être appliqué notamment à la coulée de demi-produits tel que des brames, des blooms, des billettes et des ronds à tube. Dans le cas des brames, c'est-à-dire de produits en acier de grande largeur, on utilise des moules de grandes dimensions.This long-known pressure casting method can be applied in particular to the casting of semi-finished products such as slabs, blooms, billets and rods. In the case of slabs, that is to say steel products of large width, large molds are used.

Un moule de coulée sous pression du type concerné par l'invention est décrit notamment par le brevet américain 3 590 904. La largeur des entretoises dans la direction transversale détermine l'épaisseur du produit plat à couler. La position de l'entretoise supérieure au dessus de l'entretoise inférieure déter­mine la largeur de la brame coulée dans le moule. Cette entretoise supérieure comporte à son extrémité antérieure une partie terminale coudée à angle droit c'est-à-dire qui est située dans la partie du moule placée au dessus du tube de remplissage de la cuve de coulée.A die-casting mold of the type concerned by the invention is described in particular by US patent 3,590,904. The width of the spacers in the transverse direction determines the thickness of the flat product to be cast. The position of the upper spacer above the lower spacer determines the width of the slab cast in the mold. This upper spacer has at its front end a bent end portion at a right angle, that is to say which is located in the part of the mold placed above the filling tube of the casting tank.

L'entretoise supérieure est maintenue par des dispositifs de suspension appropriés à une certaine hauteur au dessus de l'entretoise inférieure et parallèlement à celle-ci. Elle doit pouvoir être réglée en hauteur en fonction de la largeur voulue pour la brame à couler. Dans la direction transversale elle doit pouvoir être positionnée convenablement en fonction de l'usure progressive des faces en vis-à-vis des blocs de graphite entre lesquels elle est serrée, durant les coulées successives. Enfin cette entretoise supérieure doit pouvoir être complètement escamotée pour permettre l'enlèvement des châssis-supports des blocs de graphite usagés.The upper spacer is held by suitable suspension devices at a certain height above and parallel to the lower spacer. It must be possible to adjust the height according to the desired width for the slab to be poured. In the transverse direction it must be able to be positioned suitably as a function of the progressive wear of the facing faces. graphite blocks between which it is clamped, during successive castings. Finally, this upper spacer must be able to be completely retracted to allow the removal of the supporting frames of the used graphite blocks.

Il est ainsi connu de mettre en oeuvre des dispositifs de suspension de l'entretoise supérieure portés par l'un des supports précités formant châssis porte-graphite. Ces châssis-supports sont constitués par exemple par des pièces à section transversale en C à l'intérieur desquelles sont partiellement engagés les blocs de graphite.It is thus known to use devices for suspending the upper spacer carried by one of the aforementioned supports forming a graphite holder chassis. These support frames are constituted for example by parts with a C cross section inside which the graphite blocks are partially engaged.

Ce montage des dispositifs de suspension entraine diverses complications, en particulier rela­tivement à la manutention des supports des blocs de graphite lorsqu'il est nécessaire d'enlever ceux-ci, ou de mettre les blocs de graphite dans leur position de brossage et d'enduisage de leur face intérieure pour réfection de celles-ci avant de nouvelles coulées. On constate de plus qu'avec ces dispositifs de suspension connus la mise de l'entretoise en posi­tion de coulée pour les différentes épaisseurs de brames entraîne des difficultés de réglage. Par ailleurs, il est nécessaire de procéder à toute une série de réglages de la position de l'entretoise su­périeure dans la direction horizontale au fur et à mesure de l'usure progressive des faces en vis-à-vis des blocs de graphite, afin de lui permettre de se plaquer à chaque coulée sur ces faces.This mounting of the suspension devices leads to various complications, in particular relating to the handling of the supports of the graphite blocks when it is necessary to remove them, or to put the graphite blocks in their brushing and coating position. of their inner face for repair of these before new castings. It can also be seen that with these known suspension devices, placing the spacer in the casting position for the different thicknesses of slabs causes adjustment difficulties. Furthermore, it is necessary to carry out a whole series of adjustments to the position of the upper spacer in the horizontal direction as the faces facing the graphite blocks progressively wear, in order to to allow it to be pressed with each casting on these faces.

L'invention a donc pour but de proposer un dispositif permettant d'éliminer ces divers inconvé­nients et difficultés.The invention therefore aims to provide a device for eliminating these various drawbacks and difficulties.

Suivant l'invention, le dispositif de sup­port et de réglage de l'entretoise supérieure est monté sur l'une des poutres longitudinales, et com­porte des moyens assurant une suspension pendulaire libre de l'entretoise dans la direction horizontale.According to the invention, the device for supporting and adjusting the upper spacer is mounted on one of the longitudinal beams, and comprises means ensuring a free pendular suspension of the spacer in the horizontal direction.

Le montage du dispositif sur une poutre longitudinale libère totalement les châssis porte graphite, en évitant d'encombrer ceux-ci par le dispositif de support de l'entretoise lorsque ces châssis doivent être démontés et lorsque des inter­ventions de brossage et d'enduisage des faces internes des blocs de graphite doivent être exécutées.The mounting of the device on a longitudinal beam completely frees the graphite door frames, avoiding cluttering them with the spacer support device when these frames have to be dismantled and when brushing and coating operations on the faces internal graphite blocks must be executed.

D'autre part, la libre suspension pendulaire de l'entretoise supérieure dans la direction horizon­tale lui permet de se plaquer librement sans con­trainte sur les faces du graphite, les parois laté­rales du moule étant pressées transversalement contre les entretoises par des dispositifs hydrauliques et élastiques appropriés.On the other hand, the free pendular suspension of the upper spacer in the horizontal direction allows it to be pressed freely without constraint on the graphite faces, the side walls of the mold being pressed transversely against the spacers by suitable hydraulic and elastic devices .

Suivant un mode de realisation de l'inven­tion, les moyens de suspension comprennent des leviers répartis le long de la poutre et montés sur celle-ci rotativement autour d'axes sensiblement verticaux, et des vérins à vis portés par les extrémités des leviers et dont les vis, supportant l'entretoise supérieure, sont montées dans des rotules complémentaires permet­tant un libre déplacement horizontal de l'entretoise, les vérins étant de plus disposés dans une direction sensiblement verticale pour pouvoir élever ou abaisser l'entretoise.According to one embodiment of the invention, the suspension means comprise levers distributed along the beam and mounted thereon rotatably around substantially vertical axes, and screw jacks carried by the ends of the levers and of which the screws, supporting the upper spacer, are mounted in complementary ball joints allowing free horizontal movement of the spacer, the jacks being moreover arranged in a substantially vertical direction in order to be able to raise or lower the spacer.

Chaque vérin à vis est ainsi muni d'une pre­mière rotule traversée par la vis et autorisant pour celle-ci et pour l'entretoise supérieure un léger dé­battement angulaire libre dans toutes les directions, et d'une seconde rotule d'articulation entre l'extré­mité de la vis et une pièce solidaire de l'entretoise.Each screw jack is thus provided with a first ball joint crossed by the screw and allowing for the latter and for the upper spacer a slight free angular movement in all directions, and with a second ball joint of articulation between the end of the screw and a part secured to the spacer.

Entre autres avantages, ce dispositif de réglage et de support de l'entretoise supérieure permet d'escamoter complètement celle-ci lorsque le châssis porte graphite correspondant à la poutre supportant le dispositif de réglage doit être enlevé. Cette opération peut donc être exécutée sans être gênée par l'encombrement du dispositif de support de l'entretoise.Among other advantages, this adjustment and support device for the upper spacer makes it possible to completely retract the latter when the graphite door frame corresponding to the beam supporting the adjustment device must be removed. This operation can therefore be performed without being hindered by the size of the spacer support device.

D'autres particularités et avantages de l'invention apparaitront au cours de la description qui va suivre, faite en référence aux dessins annexés qui en illustrent un mode de réalisation à titre d'exemple non limitatif.

  • La figure 1 est une vue en coupe longitu­dinale suivant un plan médian vertical et en élévation partielle d'un moule de coulée sous pression de pro­duits plats métalliques, muni d'un dispositif de sup­port et de réglage de l'entretoise supérieure conforme à l'invention.
  • La figure 2 est une vue en perspective par­tielle du moule de la Fig.1.
  • Les figures 3A et 3B sont des demi-vues en élévation en bout complémentaires du moule de la Fig.1 et de son châssis de support; la paroi latérale du moule est représentée écartée du plan médian longitu­dinal du moule sur la Fig.3A, ainsi que le dispositif de suspension de l'entretoise supérieure, tandis qu'à la Fig.3B la seconde paroi latérale est montrée en position de coulée, avec un bloc de graphite fortement usé.
  • La figure 4 est une vue en élévation et coupe partielle de l'un des éléments constitutifs du dispositif de support et de réglage de l'entretoise supérieure, représentée de manière simplifiée aux Fig.1 et 3A.
  • La figure 4A est une vue en coupe partielle à échelle agrandie d'un détail de la Fig.4.
  • La figure 5 est une vue de dessus en plan du dispositif de réglage et de support de l'entretoise supérieure.
  • La figure 6 est une vue de dessus d'une butée de positionnement angulaire des leviers du dis­positif de support de l'entretoise supérieure, cette butée étant représentée également de manière simpli­fiée à la Fig.5.
Other features and advantages of the invention will appear during the description which follows, given with reference to the appended drawings which illustrate an embodiment thereof by way of nonlimiting example.
  • Figure 1 is a longitudinal sectional view along a vertical median plane and in partial elevation of a die casting mold of flat metal products, provided with a support device and adjusting the upper spacer according to invention.
  • Figure 2 is a partial perspective view of the mold of Fig.1.
  • FIGS. 3A and 3B are complementary half-views in elevation at the end of the mold of FIG. 1 and its support frame; the side wall of the mold is shown separated from the longitudinal median plane of the mold in FIG. 3A, as well as the device for suspending the upper spacer, while in FIG. 3B the second side wall is shown in the casting position , with a heavily worn graphite block.
  • Figure 4 is an elevational view in partial section of one of the components of the support and adjustment device of the upper spacer, shown in a simplified manner in Fig.1 and 3A.
  • Figure 4A is a partial sectional view on an enlarged scale of a detail of Fig.4.
  • Figure 5 is a top plan view of the adjustment device and support of the upper spacer.
  • FIG. 6 is a top view of a stop for angular positioning of the levers of the device for supporting the upper spacer, this stop being also shown in a simplified manner in FIG. 5.

L'installation de coulée sous pression de produits plats métalliques à laquelle a trait l'in­vention comprend (Fig.1) une poche 1 de métal liquide 2 disposée dans une cuve 4 supportée par un chariot 10, ainsi qu'un moule 5 reposant sur un châssis 6 lui-même supporté par des colonnes 7 et un vérin hydraulique 8.The installation for pressure casting of metallic flat products to which the invention relates comprises (Fig. 1) a pocket 1 of liquid metal 2 disposed in a tank 4 supported by a carriage 10, as well as a mold 5 resting on a chassis 6 itself supported by columns 7 and a hydraulic cylinder 8.

La cuve 4 est munie d'un couvercle étanche 9 traversé par un tube réfractaire 11 dont l'extrémité inférieure plonge dans le métal liquide 2, et dont l'extrémite supérieure traverse le couvercle 9 au ni­veau d'un dispositif connu en soi, permettant d'assu­rer une jonction étanche entre une ouverture 12 de remplissage du moule 5 et le tube 11. Un appareillage 70 permet d'envoyer à l'intérieur de la poche 1 de l'air comprimé sous pression convenable, qui chasse le métal liquide 2 dans le tube 11 pour le faire pénétrer à l'intérieur du moule 5, afin de couler un produit plat métallique tel qu'une brame.The tank 4 is provided with a sealed cover 9 crossed by a refractory tube 11, the lower end of which dips into the liquid metal 2, and the upper end of which passes through the cover 9 at a device known per se, allowing to ensure a tight junction between an opening 12 for filling the mold 5 and the tube 11. An apparatus 70 makes it possible to send inside the pocket 1 compressed air under suitable pressure, which expels the liquid metal 2 in the tube 11 to make it penetrate inside the mold 5, in order to pour a flat metallic product such as a slab.

Sur la Fig.1 l'ensemble constitué par le moule 5 et son châssis 6 de support est représenté horizontal. Le vérin 8 permet de faire basculer le châssis 6 et le moule 5 autour d'un axe horizontal 30 transversal au plan de la figure, afin d'incliner légèrement le moule 5 pour l'amener dans sa position permettant la coulée du métal liquide 2, de façon connue en soi.In Fig.1 the assembly consisting of the mold 5 and its supporting frame 6 is shown horizontal. The jack 8 makes it possible to tilt the frame 6 and the mold 5 around a horizontal axis 30 transverse to the plane of the figure, in order to tilt slightly the mold 5 to bring it into its position allowing the pouring of the liquid metal 2, in a manner known per se.

Le moule 5 comprend deux parois latérales parallèles 25 constituées chacune d'un support 30 et d'un bloc de graphite 31 partiellement logé dans le support 30, qui dans l'exemple représenté a en section une forme en C dont les branches supérieure et infé­rieure enferment entre elles partiellement le bloc 31. Le moule 5 comporte également, disposées entre les faces internes 32 en vis-à-vis des deux blocs 31, une entretoise inférieure longitudinale 21 placée à la base des blocs 31, une entretoise antérieure 22, qui s'étend verticalement quand le moule 5 est placé en position horizontale (Fig.1) et est positionnée de telle sorte que son extrémité inférieure délimite avec l'extrémité adjacente de l'entretoise inférieure 21 l'orifice 12 d'entrée de métal liquide à l'intérieur du moule 5 entre les blocs de graphite 31.The mold 5 comprises two parallel side walls 25 each consisting of a support 30 and a graphite block 31 partially housed in the support 30, which in the example shown has in section a C shape whose upper and lower branches partially enclose the block 31 therebetween. The mold 5 also comprises, disposed between the internal faces 32 facing the two blocks 31, a lower longitudinal spacer 21 placed at the base of the blocks 31, an anterior spacer 22, which extends vertically when the mold 5 is placed in a horizontal position (Fig. 1) and is positioned so that its lower end delimits with the adjacent end of the lower spacer 21 the orifice 12 of liquid metal inlet inside the mold 5 between the graphite blocks 31.

Une entretoise arrière 23 est intercalée entre l'entretoise inférieure 21 et une entretoise supérieure 20. L'entretoise arrière 23 détermine la largeur du produit plat à couler, et est déplaçable de manière coulissante entre les entretoises 20 et 21 par un dispositif 17, pour régler la longueur du produit plat à couler, ce dispositif 17 étant porté par le châssis 6. L'entretoise supérieure 20 est disposée en regard de la partie supérieure des blocs 31 à une hauteur au-dessus de l'entretoise inférieure 21, qui détermine la largeur du produit plat à couler. L'entretoise supérieure 20 comporte, en regard de l'extrémité supérieure de l'entretoise antérieure 22, une partie terminale 20b coudée à angle droit vers le haut, qui délimite avec l'extrémité supérieure de l'entretoise 22 un chenal ascendant 15 dans lequel le métal coulé peut pénétrer en fin de remplissage du moule 5. Ce chenal 15 met en communication le volume intérieur du moule 5 avec une coquille non représentée remplie en fin de coulée par une masselotte de métal liquide dans laquelle, après solidification de la brame, peut se produire une retassure.A rear spacer 23 is interposed between the lower spacer 21 and an upper spacer 20. The rear spacer 23 determines the width of the flat product to be cast, and is slidably movable between the spacers 20 and 21 by a device 17, for adjust the length of the flat product to be cast, this device 17 being carried by the chassis 6. The upper spacer 20 is arranged opposite the upper part of the blocks 31 at a height above the lower spacer 21, which determines the width of the flat product to be poured. The upper spacer 20 comprises, opposite the upper end of the front spacer 22, an end portion 20b bent at a right angle upward, which delimits with the upper end of the spacer 22 an ascending channel 15 into which the cast metal can penetrate at the end of filling of the mold 5. This channel 15 puts the interior volume of the mold 5 into communication with a shell (not shown) filled at the end of casting by a metal counterweight liquid in which, after solidification of the slab, recession may occur.

L'entretoise inférieure 21 est supportée par le châssis 6 et disposée dans la direction longitudi­nale de la brame à couler. Les entretoises 20,21,22,23 ont toutes la même épaisseur, qui correspond à l'épais­seur du produit plat coulé.The lower spacer 21 is supported by the frame 6 and arranged in the longitudinal direction of the slab to be poured. The spacers 20, 21, 22, 23 all have the same thickness, which corresponds to the thickness of the flat cast product.

Les blocs de graphite 31 des parois 25 sont percés de canaux 33 (Fig.2) permettant de recevoir des dispositifs de refroidissement des blocs 31 par asper­sion d'eau.The graphite blocks 31 of the walls 25 are pierced with channels 33 (FIG. 2) making it possible to receive devices for cooling the blocks 31 by spraying water.

Le châssis 6 comporte (Fig.1 et 3A-3B) un longeron central 26 sur la surface supérieure duquel prend appui l'entretoise inférieure 21, ainsi que deux éléments transversaux 36 et 37 en forme de C ou de U. Les extrémités de ces deux éléments 36 et 37 dirigées vers le haut, parmi lesquelles seules les extrémités 37a, 37b de l'élément 37 sont visibles aux Fig.3A et 3B, forment des appuis pour les moyens de déplacement et de serrage des parois latérales 25. Ces extrémités d'appui sont reliées à leur partie inférieure par des longerons d'appui 38a, 38b parallèles au longeron 26 et qui permettent d'améliorer la rigidité du châssis 6. Les longerons 38a, 38b fournissnt également des surfaces d'appui améliorant la stabilité du moule 5, reposant en position de coulée sur les colonnes d'appui 7 situées latéralement au niveau des longerons 38a, 38b.The chassis 6 comprises (Fig. 1 and 3A-3B) a central spar 26 on the upper surface of which the lower spacer 21 is supported, as well as two transverse elements 36 and 37 in the form of C or U. The ends of these two elements 36 and 37 directed upwards, of which only the ends 37a, 37b of the element 37 are visible in FIGS. 3A and 3B, form supports for the means for moving and tightening the side walls 25. These ends support are connected to their lower part by support rails 38a, 38b parallel to the beam 26 and which improve the rigidity of the chassis 6. The rails 38a, 38b also provide support surfaces improving the stability of the mold 5, resting in the casting position on the support columns 7 located laterally at the level of the side members 38a, 38b.

Les parois latérales 25 sont associées à des moyens de déplacement transversal de celles-ci et de serrage contre les entretoises 20 à 23 pour former une cavité étanche au métal liquide entre ces dernières et les blocs 31. A cet effet, les parois 25 sont reliées à des poutres longitudinales rigides 40 s'étendant sensiblement sur toute la longueur du moule 5 parallè­lement aux parois 25, et qui sont chacune supportées par un chariot 41 pourvu de galets 42 de roulement sur des pistes transversales ménagées sur un rail d'appui 43 porté par le châssis 6, et sur une plaque supé­rieure 44 fixée à la partie rectiligne des éléments transversaux 36, 37. Les moyens de déplacement et de serrage des parois 25 comprennent quatre vérins hy­drauliques 45 montés chacun sur une extrémité d'appui telle que 37a, 37b des éléments 36, 37, formant des chapes de fixation des corps des vérins 45. Les tiges 45a de ces derniers sont reliées à la poutre corres­pondante 40 au niveau de l'élément de structure 36, 37, et les forces exercées par les vérins 45 sont transmises aux parois 25 par des dispositifs de liai­son élastiques 59 placés transversalement dans les poutres 40 au dessus et au dessous des vérins 45. Chaque dispositif de liaison 59 comporte par exemple une tige 57 traversant un alésage de la poutre 40 et solidarisée à ses extrémités avec, d'une part la poutre 40 et avec le support associé 30, ainsi qu'un ressort hélicoïdal 58 disposé coaxialement à chaque tige 57 et prenant appui par ses extrémités sur les fonds du logement de cette dernière.The side walls 25 are associated with means for transverse displacement of these and for clamping against the spacers 20 to 23 to form a liquid metal tight cavity between the latter and the blocks 31. For this purpose, the walls 25 are connected to rigid longitudinal beams 40 extending substantially over the entire length of the mold 5 parallel to the walls 25, and which are each supported by a carriage 41 provided with rollers 42 for rolling on transverse tracks formed on a support rail 43 carried by the chassis 6, and on an upper plate 44 fixed to the rectilinear part of the transverse elements 36, 37. The means for moving and clamping the walls 25 comprise four hydraulic jacks 45 each mounted on a support end such as 37a, 37b of the elements 36, 37, forming caps for fixing the bodies of the jacks 45. The rods 45a of the latter are connected to the corresponding beam 40 at n iveau of the structural element 36, 37, and the forces exerted by the jacks 45 are transmitted to the walls 25 by elastic connecting devices 59 placed transversely in the beams 40 above and below the jacks 45. Each connecting device 59 comprises for example a rod 57 passing through a bore of the beam 40 and secured at its ends with, on the one hand the beam 40 and with the associated support 30, as well as a helical spring 58 disposed coaxially with each rod 57 and taking support by its ends on the housing funds of the latter.

Les extrémités supérieures des éléments transversaux 36 et 37 sont reliées par des barres de torsion (non visibles aux Figures) parallèles aux poutres 40 et aux parois 25, des ensembles de bielles articulées reliant les barres de torsion à chaque poutre 40 associée.The upper ends of the transverse elements 36 and 37 are connected by torsion bars (not visible in the Figures) parallel to the beams 40 and to the walls 25, sets of connecting rods articulated connecting the torsion bars to each beam 40 associated.

L'ensemble des dispositifs mentionnés ci-­dessus ainsi que leur fonctionnement sont décrits en détail dans une demande de brevet déposée par les De­manderesses le même jour que la présente demande et intitulée "Moule de coulée de produits plats métalli­ques tels que des brames". Cette description ne fait pas partie de la présente invention, de sorte qu'elle ne sera pas reprise en détail ici, seuls les éléments de l'installation nécessaires à la compréhension de l'invention étant décrits dans la présente demande.All of the above-mentioned devices and their operation are described in detail in a patent application filed by the Applicants on the same day as the present application and entitled "Mold for casting flat metal products such as slabs". This description is not part of the present invention, so it will not be repeated in detail here, only the elements of the installation necessary for understanding the invention being described in the present application.

L'installation de coulée sous pression re­présentée aux dessins comprend également un dispositif 27 de support et de réglage de la position de l'entre­toise supérieure 20, qui sera maintenant décrit.The pressure casting installation shown in the drawings also comprises a device 27 for supporting and adjusting the position of the upper spacer 20, which will now be described.

Le dispositif 27 est monté sur l'une des poutres 40 et comprend des moyens assurant une sus­pension pendulaire libre de 1 entretoise 20 dans la direction horizontale, en particulier dans la direc­tion transversale du moule 5 (flèches F1 et F2 sur la Fig.4). Ces moyens comprennent, dans l'exemple décrit, des leviers 51 répartis le long de la poutre 40 et montés sur celle-ci rotativement autour d'axes sensi­blement verticaux 52. Dans cet exemple, les leviers 51 sont au nombre de trois disposés à intervalles égaux le long de la poutre 40. Chaque axe 52 est monté rota­tif dans des paliers de roulement 53a, 53b, équipés avantageusement de rouleaux 54 (Fig.4). Le palier inférieur 53b est fixé sur le châssis 60 par tout moyen approprié. Le palier supérieur 53a est de son côté fixé de manière amovible sur le châssis 60 porté par la poutre 40, à laquelle il est fixé par des vis 55 et des écrous 56.The device 27 is mounted on one of the beams 40 and comprises means ensuring a free pendular suspension of 1 spacer 20 in the horizontal direction, in particular in the transverse direction of the mold 5 (arrows F1 and F2 in Fig. 4) . These means comprise, in the example described, levers 51 distributed along the beam 40 and mounted thereon rotatably around substantially vertical axes 52. In this example, the levers 51 are three in number arranged at intervals equal along the beam 40. Each axis 52 is rotatably mounted in rolling bearings 53a, 53b, advantageously equipped with rollers 54 (Fig.4). The lower bearing 53b is fixed to the chassis 60 by any suitable means. The upper bearing 53a is for its part fixed in a removable manner on the frame 60 carried by the beam 40, to which it is fixed by screws 55 and nuts 56.

L'extrémité de chaque levier 51 opposée à l'axe 52 porte un vérin 61 à vis 62 qui supporte l'entretoise inférieure 20. La liaison entre l'extré­mité inférieure de la vis 62 et l'entretoise 20 est assurée par une pièce de révolution 63 recevant ladite extrémité et une rotule 64 traversée par un axe 64a (Fig.4 et 4A). La rotule 64 est montée dans des portées correspondantes de l'extrémité inférieure de la pièce 63.The end of each lever 51 opposite the axis 52 carries a screw jack 61 which supports the lower spacer 20. The connection between the lower end of the screw 62 and the spacer 20 is ensured by a piece of revolution 63 receiving said end and a ball joint 64 crossed by an axis 64a (Fig.4 and 4A). The ball joint 64 is mounted in corresponding bearing surfaces of the lower end of the part 63.

A l'axe 64a est suspendu un étrier 64b solidaire d'une pièce allongée 65a d'un dispositif 65 comportant des oreilles 65b de retenue de la pièce 65a, ces oreilles étant fixées à l'entretoise 20 par des boulons.Hanging from the axis 64a is a bracket 64b secured to an elongated part 65a of a device 65 comprising ears 65b for retaining the part 65a, these ears being fixed to the spacer 20 by bolts.

Ainsi l'ensemble de l'entretoise 20 du dispositif 65, de l'étrier 64b et de l'axe 64a peut osciller avec la rotule 64, les deux bras de l'étrier 64b étant à cet effet légèrement écartés de l'extrémité de la pièce 63.Thus, the assembly of the spacer 20 of the device 65, of the stirrup 64b and of the axis 64a can oscillate with the ball joint 64, the two arms of the stirrup 64b being for this purpose slightly spaced from the end of Exhibit 63.

Chaque vis 62 est en outre montée dans une rotule sphérique 66 logée à l'intérieur du corps du vérin 61, et qui autorise à la vis 62 un léger débat­tement angulaire dans toutes les directions. Chaque rotule 66 est donc complémentaire de la rotule 64 pour assurer avec celle-ci une libre suspension pendulaire de l'entretoise 20, permettant à celle-ci, dans cer­taines limites, un libre déplacement horizontal une fois sa hauteur déterminée par la position de la vis 62.Each screw 62 is further mounted in a spherical ball joint 66 housed inside the body of the jack 61, and which allows the screw 62 a slight angular movement in all directions. Each ball joint 66 is therefore complementary to the ball joint 64 to ensure with the latter a free pendular suspension of the spacer 20, allowing the latter, within certain limits, a free horizontal movement once its height determined by the position of the screw 62.

Les vérins 61 sont disposés dans une direc­tion sensiblement verticale, afin de pouvoir élever ou abaisser l'entretoise 20. Ces vérins 61 sont reliés par une barre horizontale 67 sur laquelle sont placés des moteurs 68 de commande des vérins 61 par l'inter­médiaire de transmissions 69 articulées d'une part sur les moteurs 68 et d'autre part sur les corps des vérins 61.The cylinders 61 are arranged in a substantially vertical direction, in order to be able to raise or lower the spacer 20. These cylinders 61 are connected by a horizontal bar 67 on which are placed motors 68 for controlling the cylinders 61 by means of transmissions 69 articulated on the one hand on the motors 68 and on the other hand on the bodies of the cylinders 61.

Le dispositif de suspension 27 est également équipé de moyens de commande de la position angulaire des leviers 51 pour régler la position transversale de l'entretoise 20 entre les blocs de graphite 31. Dans l'exemple représenté, ces moyens comprennent un vérin à double effet 71 disposé sur le châssis 60 entre deux axes 52 (Fig.5), et dont les extrémités opposées sont articulées sur des bielles respectives 72,73 solidai­res en rotation des axes correspondants 52. Ainsi le vérin 71 forme avec les deux leviers 51 associés et la barre 67 un parallélogramme articulé, d'une part sur les axes 52 solidaires des leviers 51 et d'autre part aux jonctions des leviers 51 et des vérins 61. La commande du vérin 71 permet donc de déplacer angulai­rement l'ensemble des trois leviers 51 ainsi que les vérins à vis 61 pour déplacer transversalement l'en­tretoise 20.The suspension device 27 is also equipped with means for controlling the angular position of the levers 51 to adjust the transverse position of the spacer 20 between the graphite blocks 31. In the example shown, these means comprise a double-acting cylinder 71 arranged on the frame 60 between two axes 52 (FIG. 5), and the opposite ends of which are articulated on respective connecting rods 72, 73 secured in rotation to the corresponding axes 52. Thus the jack 71 forms with the two associated levers 51 and the bar 67 an articulated parallelogram, on the one hand on the axes 52 integral with the levers 51 and on the other hand at the junctions of the levers 51 and of the jacks 61. The actuation of the jack 71 therefore makes it possible to angularly move all of the three levers 51 as well as the screw jacks 61 for transversely displacing the spacer 20.

Enfin le dispositif 27 est pourvu d'une butée 74 de maintien des leviers 51 dans leur position angulaire commandée par le vérin 71, et par conséquent de l'entretoise 20 dans sa position transversale cor­respondante entre les blocs 31, en fonction des dimen­sions de ceux-ci et du format du produit à couler. La butée 74 coopère avec le levier central 51 et comporte un bloc (Fig.6) à plusieurs faces, par exemple quatre d'inclinaisons différentes. Le bloc 74 est monté de manière amovible sur le châssis 60 rotativement autour d'un axe 75 porté par ce dernier. Dans le châssis 60 est ménagé un trou borgne de réception d'un ergot 76, qui peut être introduit, en fonction de la face du bloc 74 choisie pour servir d'appui au levier 51, dans l'une de quatre encoches correspondantes 77, 78,79 et 81 ménagées dans les faces respectives du bloc 74.Finally, the device 27 is provided with a stop 74 for holding the levers 51 in their angular position controlled by the jack 71, and consequently for the spacer 20 in its corresponding transverse position between the blocks 31, depending on the dimensions of those and the format of the product to be poured. The stop 74 cooperates with the central lever 51 and comprises a block (FIG. 6) with several faces, for example four of different inclinations. The block 74 is removably mounted on the chassis 60 rotatably around an axis 75 carried by the latter. In the frame 60 is provided a blind hole for receiving a lug 76, which can be introduced, depending on the face of the block 74 chosen to serve as a support for the lever 51, in one of four corresponding notches 77, 78, 79 and 81 formed in the respective faces of the block 74.

Lorsqu'on veut que la butée 74 maintienne le levier correspondant 51 ainsi que les autres leviers 51 dans une position angulaire déterminée, on retire le bloc 74 de l'axe 75, puis on le repositionne sur cet axe avec l'orientation angulaire choisie, et on introduit l'ergot 76 dans l'encoche de la face opposée au levier 51, afin de bloquer la butée 74 en rotation et de maintenir l'entretoise supérieure 20 dans la position transversale choisie.When it is desired that the stop 74 hold the corresponding lever 51 as well as the other levers 51 in a determined angular position, the block 74 is removed from the axis 75, then it is repositioned on this axis with the angular orientation chosen, and the lug 76 is introduced into the notch on the face opposite the lever 51, in order to block the stop 74 in rotation and to maintain the upper spacer 20 in the chosen transverse position.

La mise en oeuvre du dispositif 27 de sus­pension et de réglage de l'entretoise 20 résulte directement de la description qui précède. Au début d'une coulée, les parois latérales 25 sont rapprochées l'une de l'autre de manière que les blocs 31 enserrent par leurs faces internes 32 les entretoises 20 à 23, l'entretoise supérieure 20 ayant, en hauteur, la posi­tion représentée à la Fig.3A. On voit sur cette figure la section de la brame 55 qui s'étend en hauteur entre les entretoises supérieure 20 et inférieure 21. Après positionnement convenable d la butée 74, l'entretoise 20 est amenée dans la position transversale voulue au-dessus des blocs 31 par le vérin à double effet 71 et les leviers 51, puis abaissée entre ceux-ci par les vérins à vis 61 commandés par les moteurs 68, jusqu'à la hauteur au-dessus de l'entretoise inférieure 21 correspondant à la largeur du produit plat à couler.The implementation of the device 27 for suspending and adjusting the spacer 20 results directly from the above description. At the start of a casting, the side walls 25 are brought closer to one another so that the blocks 31 enclose by their internal faces 32 the spacers 20 to 23, the upper spacer 20 having, in height, the position shown in Fig. 3A. We see in this figure the section of the slab 55 which extends in height between the upper 20 and lower spacers 21. After proper positioning of the stop 74, the spacer 20 is brought into the desired transverse position above the blocks 31 by the double-acting cylinder 71 and the levers 51, then lowered between them by the screw cylinders 61 controlled by the motors 68, to the height above the lower spacer 21 corresponding to the width of the flat product to pour.

Une fois l'entretoise 20 mise en place, la butée 74 maintient en position l'ensemble articulé constitué par les leviers 51 et la barre 67. On a représenté à la Fig.5 en traits mixtes deux positions possibles 20c et 20d de l'entretoise 20, liées à des positions angulaires correspondantes des leviers 51.Once the spacer 20 is in place, the stop 74 maintains in position the articulated assembly formed by the levers 51 and the bar 67. There are shown in Fig.5 in broken lines two possible positions 20c and 20d of the spacer 20, linked to corresponding angular positions of the levers 51.

Le montage du dispositif de suspension 27 sur une poutre longitudinale 40 de serrage du moule 5, sa structure en parallélogramme articulé commandée par le vérin à double effet 71 et les rotules complémen­taires 64 et 66 de chaque vérin à vis 61, autorisent les déplacements nécessaires de l'entretoise supé­rieure 20 de telle sorte que en toutes circonstances soient possibles :
- l'escamotage de l'entretoise 20, c'est-à-dire sa mise en position hors service en deçà des supports 30 par pivotement des leviers 51 autour de leurs axes 52 sur commande du vérin 71, afin de permettre l'enlè­vement des châssis-supports 30 sans être gêné par l'encombrement du dispositif de suspension 27.
- la mise des blocs 31 en position de brossage-­enduisage après coulée d'une brame,
- la mise en position coulée de l'entretoise 20 pour les différentes épaisseurs de brames par simple régla­ge de la butée 74, de façon que celle-ci présente au levier 51 la face d'appui correspondant à la position transversale voulue pour l'entretoise 20, et commande du vérin 71.The mounting of the suspension device 27 on a longitudinal beam 40 for clamping the mold 5, its articulated parallelogram structure controlled by the double-acting cylinder 71 and the complementary ball joints 64 and 66 of each screw jack 61, allow the necessary displacements of the upper spacer 20 so that in all circumstances are possible:
- the retraction of the spacer 20, that is to say its putting out of service position below the supports 30 by pivoting of the levers 51 around their axes 52 on command of the jack 71, in order to allow removal support frames 30 without being hindered by the size of the suspension device 27.
putting the blocks 31 in the brushing-plastering position after casting a slab,
- placing the spacer 20 in the poured position for the different thicknesses of slabs by simply adjusting the stop 74, so that the latter has the support face 51 corresponding to the desired transverse position for the spacer 20, and actuation of the jack 71.

Par ailleurs, grâce à la libre suspension pendulaire de l'entretoise supérieure 20, celle-ci peut librement se plaquer sans contrainte sur les faces 32 des blocs de graphite 31. Le montage pendu­laire rend donc l'entretoise 20 libre horizontalement et a pour résultats :
- d'une part une compensation du mouvement dû à l'écrasement des ressorts 58 des dispositifs élasti­ques 59 lors de la fermeture du moule 5, par "balan­cement" de l'entretoise 20 sur les deux jeux de rotules 64,66. Ce mouvement libre permet un serrage effectif de l'entretoise 20 entre les faces libres 32 des blocs 31, sans forcer sur le mécanisme.
- d'autre part le fait qu'un mouvement de réglage global du dispositif de suspension 27 permet de régler la position de l'entretoise 20 en fonction de l'usure des faces 32 des blocs 31, cet ajustement étant pério­dique dans ce procédé de coulée sous pression.Furthermore, thanks to the free pendulum suspension of the upper spacer 20, it can freely be pressed without constraint on the faces 32 of the graphite blocks 31. The pendulum assembly therefore makes the spacer 20 free horizontally and has the results :
- On the one hand, compensation for the movement due to the crushing of the springs 58 of the elastic devices 59 when the mold 5 is closed, by "rocking" of the spacer 20 on the two sets of ball joints 64,66. This free movement allows tightening effective of the spacer 20 between the free faces 32 of the blocks 31, without forcing on the mechanism.
- on the other hand the fact that a global adjustment movement of the suspension device 27 makes it possible to adjust the position of the spacer 20 as a function of the wear of the faces 32 of the blocks 31, this adjustment being periodic in this die casting.

L'invention n'est pas limitée à la forme de réalisation décrite et peut comporter de nombreuses variantes d'exécution. Ainsi, le nombre de leviers 51 peut varier en fonction de la longueur des parois 25, et tout autre système de butée équivalent pourrait remplacer la butée 74. De même les vérins 61 et 71 peuvent être remplacés par tout moyen équivalent assu­rant un réglage transversal et une libre suspension pendulaire de l'entretoise supérieure 20.The invention is not limited to the embodiment described and can include numerous variant embodiments. Thus, the number of levers 51 can vary as a function of the length of the walls 25, and any other equivalent stop system could replace the stop 74. Similarly, the jacks 61 and 71 can be replaced by any equivalent means ensuring transverse adjustment and free pendulum suspension of the upper spacer 20.

Claims (8)

1. Dispositif de support et de réglage (27) de la position d'une entretoise supérieure (20) d'un moule (5) de coulée sous pression de produits plats métalliques tels que des brames (55), porté par un châssis (6), ce moule comprenant : deux parois laté­rales parallèles (25) formées chacune par un support (30) muni intérieurement d'un bloc de graphite (31), une entretoise inférieure longitudinale (21) interca­lée entre les blocs de graphite (31) à la base de ceux-ci, une entretoise antérieure (22) dont l'extré­mité inférieure délimite avec l'extrémité adjacente de l'entretoise inférieure (21) un orifice d'entrée (12) de métal liquide à l'intérieur du moule (5) entre les blocs de graphite des parois latérales (25) et les entretoises, une entretoise arrière (23) intercalée entre les entretoises supérieure et inférieure et ayant une hauteur correspondant à la largeur du pro­duit plat (55), l'entretoise supérieure (20) étant intercalée entre les blocs de graphite le long de leurs bords supérieurs, les parois latérales (25) étant associées à des moyens (45,59) de déplacement transversal de celles-ci et de serrage contre les en­tretoises pour former une cavité étanche au métal liquide (2), et les parois transversales étant de plus reliées à des poutres longitudinales rigides (40) parallèles aux dites parois, portées par le châssis (6) et déplaçables transversalement par rapport à ce dernier par lesdits moyens (45,59), caractérisé en ce qu'il est monté sur l'une des poutres longitudinales (40), et comporte des moyens (61,64,66) assurant une suspension pendulaire libre de l'entretoise supérieure (20), dans la direction horizontale.1. Support and adjustment device (27) for the position of an upper spacer (20) of a mold (5) for die-casting of flat metal products such as slabs (55), carried by a frame ( 6), this mold comprising: two parallel side walls (25) each formed by a support (30) provided internally with a graphite block (31), a lower longitudinal spacer (21) interposed between the graphite blocks (31) at the base of these, a front spacer (22), the lower end of which delimits with the adjacent end of the lower spacer (21) an inlet orifice (12) of liquid metal inside the mold (5) between the graphite blocks of the side walls (25) and the spacers, a rear spacer (23) interposed between the upper and lower spacers and having a height corresponding to the width of the flat product (55), the upper spacer (20) being interposed between the graphit blocks e along their upper edges, the side walls (25) being associated with means (45, 59) for transversely moving them and clamping against the spacers to form a liquid metal tight cavity (2), and the transverse walls being further connected to rigid longitudinal beams (40) parallel to said walls, carried by the chassis (6) and movable transversely relative to the latter by said means (45,59), characterized in that it is mounted on one of the longitudinal beams (40), and comprises means (61,64,66) ensuring a free pendular suspension of the upper spacer (20), in the horizontal direction. 2. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens de suspension comprennent des leviers (51) répartis le long de la poutre (40) et montés sur celle-ci rotativement autour d'axes sensiblement verticaux (52), et des vérins par exemple à vis (61), portés par les extrémités des leviers et qui supportent l'entretoise supérieure (20), dans lesquels sont montées des rotules complé­mentaires (64,66) permettant un libre déplacement horizontal de l'entretoise, les vérins (61) étant de plus disposés dans une direction sensiblement verti­cale pour pouvoir élever ou abaisser l'entretoise.2. Device according to claim 1, characterized in that said suspension means comprise levers (51) distributed along the beam (40) and mounted thereon rotatably around substantially vertical axes (52), and cylinders for example with screws (61), carried by the ends of the levers and which support the upper spacer (20), in which are mounted additional ball joints (64,66) allowing free horizontal movement of the spacer, the cylinders (61) being further arranged in a substantially vertical direction to be able to raise or lower the spacer. 3. Dispositif selon la revendication 2, caractérisé en ce qu'à leurs extrémités opposées aux vérins les axes (52) de rotation des leviers (51) sont montés rotatifs dans des paliers (53) de roulement fixés à un châssis (60) solidaire de la poutre de support (40).3. Device according to claim 2, characterized in that at their ends opposite to the cylinders the axes (52) of rotation of the levers (51) are rotatably mounted in rolling bearings (53) fixed to a chassis (60) integral of the support beam (40). 4. Dispositif selon l'une des revendications 2 et 3, caractérisé en ce qu'il comprend des moyens de commande des vérins (61), par exemple des moteurs (68) supportés par une barre (67) de liaison des vérins auxquels ils sont reliés par des transmissions articulées (69).4. Device according to one of claims 2 and 3, characterized in that it comprises means for controlling the jacks (61), for example motors (68) supported by a bar (67) connecting the jacks to which they are connected by articulated transmissions (69). 5. Dispositif selon la revendication 4, ca­ractérisé en ce qu'il comporte des moyens de commande de la position angulaire des leviers (51) pour régler la position transversale de l'entretoise (20) entre les blocs de graphite (31), par exemple un vérin à double effet (71) porté par la poutre longitudinale (40), articulé à ses extrémités sur des bielles (72, 73) solidarisées en rotation avec les axes (52) de deux leviers (51), ce vérin (71) formant avec ces der­niers et la barre de liaison entre eux un parallélo­ gramme articulé, d'une part sur les axes (52) soli­daires des leviers (51) et d'autre part aux jonctions des leviers et des vérins (61) portant l'entretoise (20), la commande du vérin à double effet (71) permet­tant de déplacer angulairement l'ensemble des leviers (51) et des vérins (61) pour déplacer transversalement l'entretoise supérieure (20).5. Device according to claim 4, characterized in that it comprises means for controlling the angular position of the levers (51) for adjusting the transverse position of the spacer (20) between the graphite blocks (31), by example a double-acting cylinder (71) carried by the longitudinal beam (40), articulated at its ends on connecting rods (72, 73) secured in rotation with the axes (52) of two levers (51), this cylinder (71 ) forming with these and the connecting bar between them a parallel articulated gram, on the one hand on the axes (52) integral with the levers (51) and on the other hand at the junctions of the levers and jacks (61) carrying the spacer (20), the control of the double-acting jack ( 71) for angularly moving all of the levers (51) and jacks (61) to transversely move the upper spacer (20). 6. Dispositif selon la revendication 5, caractérisé en ce qu'il est pourvu de moyens de butée (74) réglables de la position angulaire des leviers (51).6. Device according to claim 5, characterized in that it is provided with stop means (74) adjustable from the angular position of the levers (51). 7. Dispositif selon la revendication 6, caractérisé en ce qu'à un levier (51) est associée une butée de réglage (74) comportant un bloc à plusieurs faces d'inclinaisons différentes, monté de manière amovible sur le châssis (60) porté par la poutre (40), de manière que le levier associé puisse venir prendre appui sur l'une des faces avec une orientation angu­laire correspondante déterminée, transmise aux autres leviers par le parallélogramme articulé, des moyens étant prévus pour pouvoir fixer ce bloc en rotation dans une orientation choisie.7. Device according to claim 6, characterized in that a lever (51) is associated with an adjustment stop (74) comprising a block with several faces of different inclinations, removably mounted on the chassis (60) carried by the beam (40), so that the associated lever can come to bear on one of the faces with a determined corresponding angular orientation, transmitted to the other levers by the articulated parallelogram, means being provided to be able to fix this block in rotation in a chosen orientation. 8. Dispositif selon la revendication 7, caractérisé en ce que les moyens de fixation du bloc (74) dans la position angulaire choisie comportent un ergot (76) pouvant être introduit dans l'une des plusieurs encoches latérales (77-81) du bloc (74) et s'enfoncer dans le châssis (60), chaque encoche étant ménagée dans une face correspondante du bloc (74) ayant une inclinaison déterminée.8. Device according to Claim 7, characterized in that the means for fixing the block (74) in the angular position chosen comprise a lug (76) which can be introduced into one of the several lateral notches (77-81) of the block (74) and sink into the chassis (60), each notch being formed in a corresponding face of the block (74) having a determined inclination.
EP90400114A 1989-01-16 1990-01-16 Device for supporting and controlling the position of a top bolt in a mould for pressure die casting metallic plate products or slabs Expired - Lifetime EP0379419B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90400114T ATE87849T1 (en) 1989-01-16 1990-01-16 METHOD OF SUPPORTING AND CONTROLLING THE POSITION OF A TOP LOCK IN A MOLD FOR DIE-CASTING METALLIC PLATE PRODUCTS OR SLABS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900455A FR2642682B1 (en) 1989-01-16 1989-01-16 DEVICE FOR SUPPORTING AND ADJUSTING THE POSITION OF AN UPPER SPACER OF A DIE MOLD UNDER PRESSURE OF FLAT METAL PRODUCTS SUCH AS SLABS
FR8900455 1989-01-16

Publications (2)

Publication Number Publication Date
EP0379419A1 true EP0379419A1 (en) 1990-07-25
EP0379419B1 EP0379419B1 (en) 1993-04-07

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Application Number Title Priority Date Filing Date
EP90400114A Expired - Lifetime EP0379419B1 (en) 1989-01-16 1990-01-16 Device for supporting and controlling the position of a top bolt in a mould for pressure die casting metallic plate products or slabs

Country Status (9)

Country Link
US (1) US5174358A (en)
EP (1) EP0379419B1 (en)
JP (1) JPH04504538A (en)
KR (1) KR910700111A (en)
AT (1) ATE87849T1 (en)
AU (1) AU4962690A (en)
DE (1) DE69001260T2 (en)
FR (1) FR2642682B1 (en)
WO (1) WO1990007998A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6945540B2 (en) 1997-11-12 2005-09-20 Meteor Gummiwerke K.H. Badje Gmbh & Co. Sealing connection element, sealing end piece and a seal
CN105855486A (en) * 2016-06-21 2016-08-17 永兴县金业冶炼有限责任公司 Metal brick making device capable of being separated from mold

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590904A (en) * 1967-03-29 1971-07-06 Amsted Ind Inc Method and appratus for cooling graphite molds
US3978908A (en) * 1975-01-06 1976-09-07 Research Corporation Method of die casting metals
DE3316951A1 (en) * 1982-05-10 1983-11-17 Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi FULLY AUTOMATIC INJECTION MOLDING MACHINE

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
NL134929C (en) * 1966-04-13 1900-01-01
US3646991A (en) * 1970-06-22 1972-03-07 Armsted Ind Inc Top block shift
US4669524A (en) * 1986-08-06 1987-06-02 Amsted Industries Incorporated Mold with removed cooling structure and method for constructing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590904A (en) * 1967-03-29 1971-07-06 Amsted Ind Inc Method and appratus for cooling graphite molds
US3978908A (en) * 1975-01-06 1976-09-07 Research Corporation Method of die casting metals
DE3316951A1 (en) * 1982-05-10 1983-11-17 Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi FULLY AUTOMATIC INJECTION MOLDING MACHINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6945540B2 (en) 1997-11-12 2005-09-20 Meteor Gummiwerke K.H. Badje Gmbh & Co. Sealing connection element, sealing end piece and a seal
CN105855486A (en) * 2016-06-21 2016-08-17 永兴县金业冶炼有限责任公司 Metal brick making device capable of being separated from mold

Also Published As

Publication number Publication date
WO1990007998A1 (en) 1990-07-26
US5174358A (en) 1992-12-29
AU4962690A (en) 1990-08-13
ATE87849T1 (en) 1993-04-15
EP0379419B1 (en) 1993-04-07
KR910700111A (en) 1991-03-13
FR2642682A1 (en) 1990-08-10
DE69001260D1 (en) 1993-05-13
JPH04504538A (en) 1992-08-13
DE69001260T2 (en) 1993-11-04
FR2642682B1 (en) 1991-05-17

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