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EP1092121A1 - Heat processing installation - Google Patents

Heat processing installation

Info

Publication number
EP1092121A1
EP1092121A1 EP99920530A EP99920530A EP1092121A1 EP 1092121 A1 EP1092121 A1 EP 1092121A1 EP 99920530 A EP99920530 A EP 99920530A EP 99920530 A EP99920530 A EP 99920530A EP 1092121 A1 EP1092121 A1 EP 1092121A1
Authority
EP
European Patent Office
Prior art keywords
oven
frame
loading
support plate
installation according
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
EP99920530A
Other languages
German (de)
French (fr)
Other versions
EP1092121B1 (en
Inventor
François STUDER
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.)
Studer Francois Sa
Original Assignee
Studer Francois 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 Studer Francois Sa filed Critical Studer Francois Sa
Publication of EP1092121A1 publication Critical patent/EP1092121A1/en
Application granted granted Critical
Publication of EP1092121B1 publication Critical patent/EP1092121B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0021—Charging; Discharging; Manipulation of charge of ceramic ware
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0075—Charging or discharging vertically, e.g. through a bottom opening

Definitions

  • the present invention relates to a thermal treatment installation comprising an oven, at least one treatment tank and means for transferring loads between said oven and said tank.
  • Patent EP 0533615 describes an installation of this type, which comprises an oven with a vertical arrangement open downward and situated in an upper position, a tank provided with an elevator and placed in a lower position, and a horizontal access path , installed at the height of the base of the tank, provided with loading means and a charging elevator placed next to the tank so as to raise a load placed by the loading means on the elevator to introduce it into the oven.
  • This is movable horizontally between a position located above the charging elevator and a position located above the tray.
  • a sliding plane is arranged so that the horizontal movement of the oven causes the load supported by the elevator on the sliding plane.
  • the above installation uses known solutions to place the load on an elevator before introducing it into a heating enclosure comprising a gas-tight bell which protects the components of the load against oxidation, l 'elevator then bringing the load in a starting position after heat treatment.
  • the load is transferred by sliding on a sliding plane.
  • Shifting is, in fact, carried out by the oven itself which pushes the load from one position to another, this displacement necessitating a refocusing with respect to the coordinates of the new enclosure into which the load is to be introduced.
  • the dimensions of the load support must therefore allow sufficient positioning clearance inside the furnace heating bell. After the thrust by shifting on the sliding plane, this play is caught up initially and requires that the oven goes back to center the load on the new enclosure.
  • the sliding plane is a cold zone on which the load is shifted.
  • any variation in temperature is detrimental to the good quality of the treatment which follows the rise in temperature to a determined degree.
  • the variable temperature change of the load on the sliding plane itself of variable temperature is therefore detrimental to the quality of the desired treatment.
  • the components to be heat treated must be placed on the load support without their respective position being changed during the transfer after desired heating.
  • the fact of using a sliding solution on a sliding plane by means of the oven itself causes vibrations detrimentally modifying the position of the components on the load support.
  • the displacement by shifting of the load is provided to route it in front of several tanks arranged linearly or rotatably.
  • the load must be able to be introduced into any bin according to an established program, the passage by sliding of the load over the bins not provided for in the program requires each time that the opening of the unplanned bin is obstructed by the introduction of a "plug", this both on the outward journey and on the return, so that the load does not fall into the first open bin but into the programmed one.
  • the present invention aims to provide a support and load transfer device eliminating the drawbacks mentioned while retaining known principles for loading, transfer and evacuation of the load.
  • the invention relates to a thermal treatment installation characterized in that it comprises:
  • - loading / unloading means for introducing into the oven - or extracting from it -, through said opening, a support plate intended to receive components to be treated;
  • a frame of variable shape associated with the bottom of the oven, capable of taking a first configuration, called open, in which it delimits, opposite said opening, a window allowing the free passage of the support plate and a second configuration, called closed, for which said window is partially closed so as to allow only the passage of the loading / unloading means, the frame then offering support zones on which the support plate comes to rest when said means are removed from the oven.
  • the support plate is circular and is extended, downwards, by a tubular sleeve, the height of which is chosen according to the level which the support plate must occupy inside the oven.
  • the frame is preferably placed under the bottom of the oven. It is formed by four identical arms articulated to each other, forming a square in the open configuration and a diamond in the closed configuration. In this case, two of the arms opposite one another are pivotally mounted in their center on studs integral with the bottom of the furnace. Furthermore, each arm is provided with a circular central cutout open towards the inside of the frame, the four cutouts delimiting a circle whose diameter is slightly greater than the outside diameter of the support plate.
  • the frame is advantageously associated with a control lever secured to one of its arms.
  • the installation comprises at least one treatment tank inside which are mounted loading / unloading means and on which the oven rests.
  • the installation comprises several juxtaposed treatment tanks inside each of which are mounted loading / unloading means and above which the oven can be moved.
  • - fig. 1 is a bottom view of the oven and its frame with variable shape in the open configuration
  • - fig. 2 is a bottom view of the oven and its frame with variable shape in the closed configuration
  • - fig. 3 is a front view in section of the oven and its contents when the frame is in the open configuration, the support plate being carried by the loading / unloading means;
  • - fig. 4 is a front view in section of the oven and its contents when the frame is in the closed configuration, the support plate being carried by the loading / unloading means;
  • - fig. 5 is a front view in section of the oven and its contents when the frame is in the closed configuration and the loading / unloading means have been removed;
  • fig. 9 very schematically shows an installation according to the invention in which several ovens are associated with a set of juxtaposed treatment tanks.
  • FIG. 1 shows a mobile oven 1, the bottom of which is pierced with a circular opening 3 and which can be moved, by means known to those skilled in the art. loom, above a series of juxtaposed bins 4a-bcdef (fig. 9) each equipped with a loading / unloading or lifting system 5 allowing to introduce into or out of the oven, through opening 3, a support plate 6 on which components to be treated are deposited 7.
  • the opening 3 has a diameter slightly greater than that of the support plate 6 in order to allow its free passage.
  • the furnace 1 is of the type known under the name of bell furnace. It has four side walls 8. Heating bodies 9 are arranged on its walls and are covered with a jacket 10. A turbine, not shown, ensures the uniformity of the speeds of the treatment gases in the enclosure.
  • the support plate 6 is circular and extends downwards by a tubular sleeve 11.
  • the tank 4a can be used to arrange the components 7 on the support plate, the tanks 4b-cd are tanks proper heat treatment and the 4th tank is used to unload the components.
  • the furnace 1 has, under its bottom 2, a frame with variable geometry 12 capable of taking a first configuration, called open (fig. 1), in which it delimits, opposite the opening 3, a window in the shape of a square allowing the free passage of the circular support plate 6 and a second configuration, called closed (fig. 2), for which the window is partially closed in the shape of a diamond so as to allow only the passage of the elevator 5 , the frame 12 then serving as a base for the sleeve 11 when said elevator is removed from the oven.
  • the frame 12 is formed by four identical arms 13 abcd connected to each other by four articulations 14. The arms 13a and 13 c, which face each other, pivot in their center on tenons 15 secured to the bottom 2 of the oven.
  • Each of the arms 13 is provided with a circular central cutout 16 open towards the inside of the frame, these four cutouts delimiting a circle whose diameter is very slightly greater than the outside diameter of the support plate 6 which can thus freely cross the frame 12 when it is in open configuration.
  • a control lever 17 is mounted articulated on the arm 13c by means of a lug 18.
  • the frame When it occupies position O, the frame is in the open configuration (fig. 1) and delimits a window in the shape of a square.
  • the frame When it occupies position F, the frame is in the closed configuration (fig. 2) and delimits a diamond-shaped window.
  • the installation according to the invention operates in the following manner.
  • the oven is, for example, positioned above the first tank 4a.
  • the lever 17 occupying the position O for which the frame 12 has a square shape (FIG. 1), a support plate 6 carrying components 7 is, as shown in FIG. 3, introduced into the oven 1 by the elevator 5 of the tray 4a through the circular opening 3 of its bottom after having passed through the window of the frame 12 to which the four cutouts 16 of its arms 13 give a generally circular periphery corresponding to that of the support plate.
  • the lower end of the sleeve 11 is then above the level of the frame 12.
  • the control lever 17 is then moved manually to its position F, which causes the frame 12 to pivot on the two studs 15 and, at the same time, its deformation, thanks to the articulations 14, until it takes its diamond-shaped configuration ( Fig. 2), as shown in Figure 4. It is then observed that the arms 13 offer four support zones 20, highlighted in Figure 2, which are located exactly under the sleeve 11 of the support plate.
  • the components to be treated 7 arranged on the support plate 6 can then be heated by the oven 1 to the desired temperature, after which the assembly is transferred horizontally, as it is, over one of the other tanks 4.
  • the elevator 5 of the tank concerned raises the support plate 6 so as to bring it above the level of the frame 12.
  • the lever 17 is then placed in position O to open the frame in its square position, which makes it possible to lower the elevator 5 and the support plate 6 into the tray for new processing operations.
  • the installation according to the invention can comprise several ovens 1 making it possible to heat several loads of components to be treated at the same time 7.
  • Figures 6, 7 and 8 correspond respectively to Figures 3, 4 and 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The invention concerns a heat processing installation characterised in that it comprises: a vertically arranged oven (1) whereof the base (2) is provided with a loading/unloading opening (3); loading/unloading means for inserting in the oven - or remove therefrom -, through said opening, a support-plate (6) for receiving the components to be processed (7); and a frame (12) with variable shape, associated with the oven base (2), capable of taking up a first configuration, said to be open, wherein it delimits, opposite said opening, a window allowing the support-plate (6) through and a second configuration, said to be closed, for which said window is partly closed so as to allow only the loading/unloading means through, the frame presenting support zones (20) whereon the support plate is urged to rest when said means are removed from the oven.

Description

INSTALLATION DE TRAITEMENT THERMIQUE HEAT TREATMENT PLANT
La présente invention concerne une installation de traitement thermique comportant un four, au moins un bac de traitement et des moyens pour transférer des charges entre ledit four et ledit bac.The present invention relates to a thermal treatment installation comprising an oven, at least one treatment tank and means for transferring loads between said oven and said tank.
Le brevet EP 0533615 décrit une installation de ce type, qui comprend un four à disposition verticale ouvert vers le bas et situé dans une position supérieure, un bac muni d'un élévateur et placé dans une position inférieure, et une voie d'accès horizontale, installée à la hauteur de la base du bac, munie de moyens de chargement et d'un élévateur d'enfournement placé à côté du bac de manière à élever une charge placée par les moyens de chargement sur l'élévateur pour l'introduire dans le four. Celui-ci est mobile horizontalement entre une position située au-dessus de l'élévateur d'enfournement et une position située au-dessus du bac. Un plan de glissement est aménagé de manière à ce que le déplacement horizontal du four entraîne la charge supportée par l'élévateur sur le plan de glissement.Patent EP 0533615 describes an installation of this type, which comprises an oven with a vertical arrangement open downward and situated in an upper position, a tank provided with an elevator and placed in a lower position, and a horizontal access path , installed at the height of the base of the tank, provided with loading means and a charging elevator placed next to the tank so as to raise a load placed by the loading means on the elevator to introduce it into the oven. This is movable horizontally between a position located above the charging elevator and a position located above the tray. A sliding plane is arranged so that the horizontal movement of the oven causes the load supported by the elevator on the sliding plane.
L'installation ci-dessus fait appel à des solutions connues pour placer la charge sur un élévateur avant de l'introduire dans une enceinte de chauffage comprenant une cloche étanche au gaz qui assure la protection des composants de la charge contre l'oxydation, l'élévateur ramenant ensuite la charge dans une position de départ après traitement thermique. Le transfert de la charge se fait par ripage sur un plan de glissement.The above installation uses known solutions to place the load on an elevator before introducing it into a heating enclosure comprising a gas-tight bell which protects the components of the load against oxidation, l 'elevator then bringing the load in a starting position after heat treatment. The load is transferred by sliding on a sliding plane.
Une telle solution présente des inconvénients.Such a solution has drawbacks.
Le ripage est, en effet, effectué par le four lui-même qui pousse la charge d'une position à une autre, ce déplacement nécessitant un recentrage par rapport aux coordonnées de la nouvelle enceinte dans laquelle la charge doit être introduite. Les dimensions du support de charge doivent donc permettre un jeu suffisant de positionnement à l'intérieur de la cloche de chauffage du four. Après la poussée par ripage sur le plan de glissement, ce jeu est rattrapé initialement et nécessite que le four revienne en arrière pour recentrer la charge sur la nouvelle enceinte. De plus, le plan de glissement est une zone froide sur laquelle est ripée la charge. Or on sait que toute variation de température est nuisible à la bonne qualité du traitement qui suit l'élévation de température à un degré déterminé. La modification variable de température de la charge sur le plan de glissement lui-même de température variable est donc nuisible à la qualité du traitement souhaité.Shifting is, in fact, carried out by the oven itself which pushes the load from one position to another, this displacement necessitating a refocusing with respect to the coordinates of the new enclosure into which the load is to be introduced. The dimensions of the load support must therefore allow sufficient positioning clearance inside the furnace heating bell. After the thrust by shifting on the sliding plane, this play is caught up initially and requires that the oven goes back to center the load on the new enclosure. In addition, the sliding plane is a cold zone on which the load is shifted. However, it is known that any variation in temperature is detrimental to the good quality of the treatment which follows the rise in temperature to a determined degree. The variable temperature change of the load on the sliding plane itself of variable temperature is therefore detrimental to the quality of the desired treatment.
Par ailleurs, les composants à traiter thermiquement doivent être disposés sur le support de charge sans que leur position respective ne soit modifiée lors du transfert après échauffement voulu. Le fait d'utiliser une solution de ripage sur un plan de glissement par l'intermédiaire du four lui-même provoque des vibrations modifiant nuisiblement la position des composants sur le support de charge.Furthermore, the components to be heat treated must be placed on the load support without their respective position being changed during the transfer after desired heating. The fact of using a sliding solution on a sliding plane by means of the oven itself causes vibrations detrimentally modifying the position of the components on the load support.
Enfin, le déplacement par ripage de la charge est prévu pour acheminer celle- ci en face de plusieurs bacs disposés linéairement ou rotativement. La charge devant pouvoir être introduite dans n'importe quel bac selon un programme établi, le passage par ripage de la charge au-dessus des bacs non prévus selon le programme nécessite chaque fois que l'ouverture du bac non prévu soit obstruée par l'introduction d'un "bouchon", ceci aussi bien à l'aller qu'au retour, de manière à ce que la charge ne tombe pas dans le premier bac ouvert mais bien dans celui programmé.Finally, the displacement by shifting of the load is provided to route it in front of several tanks arranged linearly or rotatably. The load must be able to be introduced into any bin according to an established program, the passage by sliding of the load over the bins not provided for in the program requires each time that the opening of the unplanned bin is obstructed by the introduction of a "plug", this both on the outward journey and on the return, so that the load does not fall into the first open bin but into the programmed one.
La présente invention a pour but de fournir un dispositif de soutien et de transfert de charge éliminant les inconvénients cités tout en conservant des principes connus pour le chargement , le transfert et l'évacuation de la charge.The present invention aims to provide a support and load transfer device eliminating the drawbacks mentioned while retaining known principles for loading, transfer and evacuation of the load.
De façon plus précise, l'invention concerne une installation de traitement thermique caractérisée en ce qu'elle comporte :More specifically, the invention relates to a thermal treatment installation characterized in that it comprises:
- un four à disposition verticale dont le fond est muni d'une ouverture de chargement / déchargement ;- an oven with vertical arrangement, the bottom of which has a loading / unloading opening;
- des moyens de chargement / déchargement pour introduire dans le four - ou en extraire -, à travers ladite ouverture, un plateau-support destiné à recevoir des composants à traiter ; et- loading / unloading means for introducing into the oven - or extracting from it -, through said opening, a support plate intended to receive components to be treated; and
- un cadre à forme variable, associé au fond du four, capable de prendre une première configuration, dite ouverte, dans laquelle il délimite, en regard de ladite ouverture, une fenêtre autorisant le libre passage du plateau-support et une deuxième configuration, dite fermée, pour laquelle ladite fenêtre est partiellement refermée de manière à permettre seulement le passage des moyens de chargement / déchargement, le cadre offrant alors des zones d'appui sur lesquelles vient reposer le plateau-support lorsque lesdits moyens sont retirés du four.- a frame of variable shape, associated with the bottom of the oven, capable of taking a first configuration, called open, in which it delimits, opposite said opening, a window allowing the free passage of the support plate and a second configuration, called closed, for which said window is partially closed so as to allow only the passage of the loading / unloading means, the frame then offering support zones on which the support plate comes to rest when said means are removed from the oven.
De façon avantageuse, le plateau-support est circulaire et se prolonge, vers le bas, par un manchon tubulaire dont la hauteur est choisie en fonction du niveau que doit occuper le plateau-support à l'intérieur du four.Advantageously, the support plate is circular and is extended, downwards, by a tubular sleeve, the height of which is chosen according to the level which the support plate must occupy inside the oven.
Le cadre est, de préférence, disposé sous le fond du four. Il est formé de quatre bras identiques articulés les uns aux autres, formant un carré dans la configuration ouverte et un losange dans la configuration fermée. Dans ce cas, deux des bras opposés l'un à l'autre sont montés pivotants en leur centre sur des tenons solidaires du fond du four. Par ailleurs, chaque bras est muni d'une découpe centrale circulaire ouverte vers l'intérieur du cadre, les quatre découpes délimitant un cercle dont le diamètre est légèrement supérieur au diamètre extérieur du plateau-support.The frame is preferably placed under the bottom of the oven. It is formed by four identical arms articulated to each other, forming a square in the open configuration and a diamond in the closed configuration. In this case, two of the arms opposite one another are pivotally mounted in their center on studs integral with the bottom of the furnace. Furthermore, each arm is provided with a circular central cutout open towards the inside of the frame, the four cutouts delimiting a circle whose diameter is slightly greater than the outside diameter of the support plate.
Le cadre est avantageusement associé à un levier de commande solidaire de l'un de ses bras.The frame is advantageously associated with a control lever secured to one of its arms.
De préférence, l'installation comporte au moins un bac de traitement à l'intérieur duquel sont montés des moyens de chargement / déchargement et sur lequel repose le four.Preferably, the installation comprises at least one treatment tank inside which are mounted loading / unloading means and on which the oven rests.
Enfin, selon une forme de réalisation particulièrement avantageuse, l'installation comporte plusieurs bacs de traitement juxtaposés à l'intérieur de chacun desquels sont montés des moyens de chargement / déchargement et au-dessus desquels le four peur être déplacé. D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre, faite en regard des dessins annexés sur lesquels :Finally, according to a particularly advantageous embodiment, the installation comprises several juxtaposed treatment tanks inside each of which are mounted loading / unloading means and above which the oven can be moved. Other characteristics and advantages of the present invention will emerge from the description which follows, given with reference to the appended drawings in which:
- la fig. 1 est une vue de dessous du four et de son cadre à forme variable en configuration ouverte;- fig. 1 is a bottom view of the oven and its frame with variable shape in the open configuration;
- la fig. 2 est une vue de dessous du four et de son cadre à forme variable en configuration fermée ;- fig. 2 is a bottom view of the oven and its frame with variable shape in the closed configuration;
- la fig. 3 est une vue de face en coupe du four et de son contenu lorsque le cadre est en configuration ouverte, le plateau-support étant porté par les moyens de chargement / déchargement ;- fig. 3 is a front view in section of the oven and its contents when the frame is in the open configuration, the support plate being carried by the loading / unloading means;
- la fig. 4 est une vue de face en coupe du four et de son contenu lorsque le cadre est en configuration fermée, le plateau-support étant porté par les moyens de chargement / déchargement ;- fig. 4 is a front view in section of the oven and its contents when the frame is in the closed configuration, the support plate being carried by the loading / unloading means;
- la fig. 5 est une vue de face en coupe du four et de son contenu lorsque le cadre est en configuration fermée et que les moyens de chargement / déchargement ont été retirés ;- fig. 5 is a front view in section of the oven and its contents when the frame is in the closed configuration and the loading / unloading means have been removed;
- les fig. 6, 7 et 8 correspondent respectivement aux figures 3, 4 et 5 avec la seule différence que le plateau-support est doté d'un manchon plus court, cette différence montrant que l'installation selon l'invention permet de positionner les composants à traiter à différentes hauteurs choisies selon les nécessités de chauffage dans le four ;- fig. 6, 7 and 8 correspond respectively to Figures 3, 4 and 5 with the only difference that the support plate is provided with a shorter sleeve, this difference showing that the installation according to the invention makes it possible to position the components to be treated at different heights chosen according to the heating requirements in the oven;
- enfin, la fig. 9 montre, de manière très schématique, une installation selon l'invention dans laquelle plusieurs fours sont associés à un ensemble de bacs de traitement juxtaposés.- finally, fig. 9 very schematically shows an installation according to the invention in which several ovens are associated with a set of juxtaposed treatment tanks.
Les dessins montrent un four mobile 1 dont le fond est percé d'une ouverture circulaire 3 et qui peut être déplacé, par des moyens connus de l'homme du métier, au-dessus d'une série de bacs juxtaposés 4a-b-c-d-e-f (fig. 9) dotés chacun d'un système de chargement / déchargement ou élévateur 5 permettant d'introduire dans le four - ou d'en extraire -, à travers l'ouverture 3, un plateau-support 6 sur lequel sont déposés des composants à traiter 7.The drawings show a mobile oven 1, the bottom of which is pierced with a circular opening 3 and which can be moved, by means known to those skilled in the art. loom, above a series of juxtaposed bins 4a-bcdef (fig. 9) each equipped with a loading / unloading or lifting system 5 allowing to introduce into or out of the oven, through opening 3, a support plate 6 on which components to be treated are deposited 7.
Bien entendu, l'ouverture 3 a un diamètre légèrement supérieur à celui du plateau-support 6 afin de permettre son libre passage.Of course, the opening 3 has a diameter slightly greater than that of the support plate 6 in order to allow its free passage.
Le four 1 est du type connu sous la dénomination de four à cloche. Il comporte quatre parois latérales 8. Des corps de chauffe 9 sont disposés sur ses parois et sont recouverts d'une chemise 10. Une turbine, non représentée, assure l'homogénéité des vitesses des gaz de traitement dans l'enceinte.The furnace 1 is of the type known under the name of bell furnace. It has four side walls 8. Heating bodies 9 are arranged on its walls and are covered with a jacket 10. A turbine, not shown, ensures the uniformity of the speeds of the treatment gases in the enclosure.
Le plateau-support 6 est circulaire et se prolonge, vers le bas, par un manchon tubulaire 11.The support plate 6 is circular and extends downwards by a tubular sleeve 11.
Dans l'exemple de la figure 9 qui montre une installation de traitement thermique selon l'invention, à plusieurs fours 1 , le bac 4a peut être utilisé pour disposer les composants 7 sur le plateau-support, les bacs 4b-c-d sont des bacs de traitement thermique proprement dit et le bac 4e sert au déchargement des composants.In the example of FIG. 9 which shows a thermal treatment installation according to the invention, with several ovens 1, the tank 4a can be used to arrange the components 7 on the support plate, the tanks 4b-cd are tanks proper heat treatment and the 4th tank is used to unload the components.
Dans une installation telle décrite ci-dessus, il est nécessaire à la fois d'assurer le libre passage, à travers l'ouverture circulaire 3, du plateau- support 6 mû par l'élévateur 5 et d'offrir au manchon 11 une base sur laquelle il peut être déposé lorsque ledit élévateur est retiré.In an installation as described above, it is necessary both to ensure the free passage, through the circular opening 3, of the support plate 6 moved by the elevator 5 and to offer the sleeve 11 a base on which it can be placed when said elevator is removed.
A cette fin, le four 1 possède, sous son fond 2, un cadre à géométrie variable 12 capable de prendre une première configuration, dite ouverte (fig. 1), dans laquelle il délimite, en regard de l'ouverture 3, une fenêtre en forme de carré autorisant le libre passage du plateau-support circulaire 6 et une deuxième configuration, dite fermée (fig. 2), pour laquelle la fenêtre est partiellement refermée en forme de losange de manière à permettre seulement le passage de l'élévateur 5, le cadre 12 servant alors de base au manchon 11 lorsque ledit élévateur est retiré du four. Plus précisément, dans l'exemple décrit, le cadre 12 est formé de quatre bras identiques 13 a-b-c-d reliés les uns aux autres par quatre articulations 14. Les bras 13a et 13 c, qui se font face, pivotent en leur centre sur des tenons 15 solidaires du fond 2 du four.To this end, the furnace 1 has, under its bottom 2, a frame with variable geometry 12 capable of taking a first configuration, called open (fig. 1), in which it delimits, opposite the opening 3, a window in the shape of a square allowing the free passage of the circular support plate 6 and a second configuration, called closed (fig. 2), for which the window is partially closed in the shape of a diamond so as to allow only the passage of the elevator 5 , the frame 12 then serving as a base for the sleeve 11 when said elevator is removed from the oven. More specifically, in the example described, the frame 12 is formed by four identical arms 13 abcd connected to each other by four articulations 14. The arms 13a and 13 c, which face each other, pivot in their center on tenons 15 secured to the bottom 2 of the oven.
Chacun des bras 13 est muni d'une découpe centrale circulaire 16 ouverte vers l'intérieur du cadre, ces quatre découpes délimitant un cercle dont la diamètre est très légèrement supérieur au diamètre extérieur du plateau- support 6 qui peut ainsi traverser librement le cadre 12 lorsque celui-ci est en configuration ouverte.Each of the arms 13 is provided with a circular central cutout 16 open towards the inside of the frame, these four cutouts delimiting a circle whose diameter is very slightly greater than the outside diameter of the support plate 6 which can thus freely cross the frame 12 when it is in open configuration.
Un levier de commande 17 est monté articulé sur le bras 13c grâce à un tenon 18. Le déplacement manuel de ce levier entre une position O et une position F, fixées par deux bossages 19 prévus sous le fond 2, provoque la déformation du cadre 12. Lorsqu'il occupe la position O, le cadre est en configuration ouverte (fig. 1 ) et délimite une fenêtre en forme de carré. Lorsqu'il occupe la position F, le cadre est en configuration fermée (fig. 2) et délimite une fenêtre en forme de losange.A control lever 17 is mounted articulated on the arm 13c by means of a lug 18. The manual movement of this lever between a position O and a position F, fixed by two bosses 19 provided under the bottom 2, causes the frame 12 to be deformed When it occupies position O, the frame is in the open configuration (fig. 1) and delimits a window in the shape of a square. When it occupies position F, the frame is in the closed configuration (fig. 2) and delimits a diamond-shaped window.
L'installation selon l'invention fonctionne de la manière suivante.The installation according to the invention operates in the following manner.
Le four est, par exemple, positionné au-dessus du premier bac 4a. Le levier 17 occupant la position O pour laquelle le cadre 12 a une forme carrée (fig. 1 ), un plateau-support 6 portant des composants 7 est, comme le montre la figure 3, introduit dans le four 1 par l'élévateur 5 du bac 4a par l'ouverture circulaire 3 de son fond après avoir traversé la fenêtre du cadre 12 à laquelle les quatre découpes 16 de ses bras 13 confèrent un pourtour généralement circulaire correspondant à celui du plateau-support. L'extrémité inférieure du manchon 11 se trouve alors au-dessus du niveau du cadre 12.The oven is, for example, positioned above the first tank 4a. The lever 17 occupying the position O for which the frame 12 has a square shape (FIG. 1), a support plate 6 carrying components 7 is, as shown in FIG. 3, introduced into the oven 1 by the elevator 5 of the tray 4a through the circular opening 3 of its bottom after having passed through the window of the frame 12 to which the four cutouts 16 of its arms 13 give a generally circular periphery corresponding to that of the support plate. The lower end of the sleeve 11 is then above the level of the frame 12.
Le levier de commande 17 est ensuite déplacé manuellement vers sa position F, ce qui provoque le pivotement du cadre 12 sur les deux tenons 15 et, en même temps, sa déformation, grâce aux articulations 14, jusqu'à prendre sa configuration en losange (fig. 2), comme représenté sur la figure 4. On observe alors que les bras 13 offrent quatre zones d'appui 20, mises en évidence sur la figure 2, qui sont situées exactement sous le manchon 11 du plateau-support.The control lever 17 is then moved manually to its position F, which causes the frame 12 to pivot on the two studs 15 and, at the same time, its deformation, thanks to the articulations 14, until it takes its diamond-shaped configuration ( Fig. 2), as shown in Figure 4. It is then observed that the arms 13 offer four support zones 20, highlighted in Figure 2, which are located exactly under the sleeve 11 of the support plate.
Il ne reste plus, à ce moment, comme illustré par la figure 5, à faire redescendre l'élévateur 5 qui, en quittant le four, dépose le manchon 11 sur les quatre zones d'appui 20.At this point, as illustrated in FIG. 5, there is no longer any need to lower the elevator 5 which, when leaving the oven, deposits the sleeve 11 on the four support zones 20.
Les composants à traiter 7 disposés sur la plateau-support 6 peuvent alors être chauffés par le four 1 à la température désirée, après quoi l'ensemble est transféré horizontalement, tel quel, au-dessus de l'un des autres bacs 4. Par un processus inverse de celui qui vient d'être décrit, le levier 17 étant toujours en position F et le cadre 12 dans sa configuration en losange, l'élévateur 5 du bac concerné vient soulever le plateau-support 6 de manière à l'amener au- dessus du niveau du cadre 12. Le levier 17 est alors mis en position O pour ouvrir le cadre dans sa position en carré, ce qui permet de faire redescendre l'élévateur 5 et le plateau-support 6 dans le bac pour de nouvelles opérations de traitement.The components to be treated 7 arranged on the support plate 6 can then be heated by the oven 1 to the desired temperature, after which the assembly is transferred horizontally, as it is, over one of the other tanks 4. By a reverse process to that just described, the lever 17 still being in position F and the frame 12 in its diamond-shaped configuration, the elevator 5 of the tank concerned raises the support plate 6 so as to bring it above the level of the frame 12. The lever 17 is then placed in position O to open the frame in its square position, which makes it possible to lower the elevator 5 and the support plate 6 into the tray for new processing operations.
Bien entendu, comme le montre la figure 9, l'installation selon l'invention peut comporter plusieurs fours 1 permettant de chauffer en même temps plusieurs charges de composants à traiter 7.Of course, as shown in FIG. 9, the installation according to the invention can comprise several ovens 1 making it possible to heat several loads of components to be treated at the same time 7.
Les figures 6, 7 et 8 correspondent respectivement aux figures 3, 4 et 5.Figures 6, 7 and 8 correspond respectively to Figures 3, 4 and 5.
Elles ont pour seul objectif de montrer que le manchon 11 du plateau-supportTheir sole purpose is to show that the sleeve 11 of the support plate
6 peut être de hauteur variable, permettant ainsi, avec la même installation, de placer la charge de composants à traiter 7 à toute hauteur voulue à l'intérieur du four 1. 6 can be of variable height, thus making it possible, with the same installation, to place the load of components to be treated 7 at any desired height inside the furnace 1.

Claims

REVENDICATIONS
1 . Installation de traitement thermique caractérisée en ce qu'elle comporte :1. Thermal treatment installation characterized in that it comprises:
- un four (1 ) à disposition verticale dont le fond (2) est muni d'une ouverture de chargement / déchargement (3);- an oven (1) with a vertical arrangement, the bottom (2) of which is provided with a loading / unloading opening (3);
- des moyens de chargement / déchargement (5) pour introduire dans le four - ou en extraire -, à travers ladite ouverture, un plateau-support (6) destiné à recevoir des composants à traiter (7) ; et- loading / unloading means (5) for introducing into the oven - or extracting from it -, through said opening, a support plate (6) intended to receive components to be treated (7); and
- un cadre à forme variable (12), associé au fond (2) du four, capable de prendre une première configuration, dite ouverte, dans laquelle il délimite, en regard de ladite ouverture (3), une fenêtre autorisant le libre passage du plateau-support (6) et une deuxième configuration, dite fermée, pour laquelle ladite fenêtre est partiellement refermée de manière à permettre seulement le passage des moyens de chargement / déchargement (5), le cadre offrant alors des zones d'appui (20) sur lesquelles vient reposer le plateau-support lorsque lesdits moyens sont retirés du four.- a frame with variable shape (12), associated with the bottom (2) of the oven, capable of taking a first configuration, called open, in which it delimits, opposite said opening (3), a window allowing the free passage of the support plate (6) and a second configuration, called closed, for which said window is partially closed so as to allow only the passage of the loading / unloading means (5), the frame then offering support zones (20) on which rests the support plate when said means are removed from the oven.
2. Installation selon la revendication 1 , caractérisée en ce que le plateau- support (6) est circulaire et se prolonge, vers le bas, par un manchon tubulaire (1 1 ) dont la hauteur est choisie en fonction du niveau que doit occuper le plateau-support à l'intérieur du four.2. Installation according to claim 1, characterized in that the support plate (6) is circular and is extended, downwards, by a tubular sleeve (1 1) whose height is chosen according to the level which must occupy the support tray inside the oven.
3. Installation selon la revendication 2, caractérisée en ce que ledit cadre (12) est formé de quatre bras identiques (13) articulés les uns aux autres, lesdits bras formant un carré dans la configuration ouverte et un losange dans la configuration fermée.3. Installation according to claim 2, characterized in that said frame (12) is formed of four identical arms (13) articulated to each other, said arms forming a square in the open configuration and a diamond in the closed configuration.
4. Installation selon la revendication 3, caractérisée en ce que deux desdits bras (13) opposés l'un à l'autre sont montés pivotants en leur centre sur des tenons (15) solidaires du fond (2) du four. 4. Installation according to claim 3, characterized in that two of said arms (13) opposite one another are pivotally mounted in their center on pins (15) integral with the bottom (2) of the oven.
5. Installation selon la revendication 3, caractérisée en ce que chaque bras (13) est muni d'une découpe centrale circulaire (16) ouverte vers l'intérieur du cadre (12), les quatre découpes délimitant un cercle dont le diamètre est légèrement supérieur au diamètre extérieur du plateau-support (6).5. Installation according to claim 3, characterized in that each arm (13) is provided with a circular central cutout (16) open towards the inside of the frame (12), the four cutouts delimiting a circle whose diameter is slightly greater than the outside diameter of the support plate (6).
6. installation selon la revendication 3, caractérisée en ce que cadre (12) est associé à un levier de commande (17) solidaire de l'un de ses bras (13).6. installation according to claim 3, characterized in that frame (12) is associated with a control lever (17) secured to one of its arms (13).
7. Installation selon l'une des revendications 1 à 6, caractérisée en ce qu'elle comporte au moins un bac de traitement (4) à l'intérieur duquel sont montés des moyens de chargement / déchargement (5) et sur lequel repose le four (1 ).7. Installation according to one of claims 1 to 6, characterized in that it comprises at least one treatment tank (4) inside which are mounted loading / unloading means (5) and on which the oven (1).
8. Installation selon l'une des revendications 1 à 6, caractérisée en ce qu'elle comporte plusieurs bacs de traitement juxtaposés (4), à l'intérieur de chacun desquels sont montés des moyens de chargement / déchargement (5) et au-dessus desquels le four peur être déplacé. 8. Installation according to one of claims 1 to 6, characterized in that it comprises several juxtaposed treatment tanks (4), inside each of which are mounted loading / unloading means (5) and au- above which the oven can be moved.
EP99920530A 1998-06-02 1999-05-31 Heat processing installation Expired - Lifetime EP1092121B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9806980 1998-06-02
FR9806980A FR2779217B1 (en) 1998-06-02 1998-06-02 HEAT TREATMENT PLANT
PCT/CH1999/000235 WO1999063289A1 (en) 1998-06-02 1999-05-31 Heat processing installation

Publications (2)

Publication Number Publication Date
EP1092121A1 true EP1092121A1 (en) 2001-04-18
EP1092121B1 EP1092121B1 (en) 2002-05-08

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EP99920530A Expired - Lifetime EP1092121B1 (en) 1998-06-02 1999-05-31 Heat processing installation

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EP (1) EP1092121B1 (en)
AU (1) AU3808699A (en)
DE (1) DE69901446T2 (en)
ES (1) ES2178433T3 (en)
FR (1) FR2779217B1 (en)
WO (1) WO1999063289A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102004053032A1 (en) * 2004-11-03 2006-05-11 Daimlerchrysler Ag Carrying element for heat treatment of components has contact surface whereby contact surface is formed by first face of cylindrical body and it is arranged on opposite of front face of body in axial direction

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
CH89732A (en) * 1920-08-26 1921-06-16 Louis De Bats Jean Herbert Melting and casting processes for metals.
US1958845A (en) * 1930-09-10 1934-05-15 M J B Company Can end stacking machine
IT1081346B (en) * 1977-04-15 1985-05-21 Longinotti Enrico HANDLING SYSTEM FOR CEMENT TILES AND SIMILAR THAT REQUIRE SEASONING AND SUBSEQUENT PROCESSING
FR2528293A1 (en) * 1982-06-11 1983-12-16 Thalmann Sarl Expl Ets Plant or bottle display stand - has four axles with legs for supporting slats extending in alternate directions to form walls and for supporting baseplate
US4861000A (en) * 1987-06-03 1989-08-29 Pierre Beuret Installation having several elements for heat treatments
US4858893A (en) * 1987-06-05 1989-08-22 Pierre Beuret Bell furnance and hardening vat arrangement
EP0671476B1 (en) * 1994-03-12 1999-06-02 Solo Fours Industriels SA Heat treatment plant

Non-Patent Citations (1)

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Title
See references of WO9963289A1 *

Also Published As

Publication number Publication date
EP1092121B1 (en) 2002-05-08
ES2178433T3 (en) 2002-12-16
FR2779217B1 (en) 2000-08-04
FR2779217A1 (en) 1999-12-03
AU3808699A (en) 1999-12-20
DE69901446T2 (en) 2003-01-09
DE69901446D1 (en) 2002-06-13
WO1999063289A1 (en) 1999-12-09

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