EP2167259B1 - Filling device for at least two granular materials and filling method using such a device - Google Patents

Filling device for at least two granular materials and filling method using such a device Download PDF

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Publication number
EP2167259B1
EP2167259B1 EP08759833A EP08759833A EP2167259B1 EP 2167259 B1 EP2167259 B1 EP 2167259B1 EP 08759833 A EP08759833 A EP 08759833A EP 08759833 A EP08759833 A EP 08759833A EP 2167259 B1 EP2167259 B1 EP 2167259B1
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EP
European Patent Office
Prior art keywords
filling
dispenser
hopper
filling device
type
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.)
Not-in-force
Application number
EP08759833A
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German (de)
French (fr)
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EP2167259A1 (en
Inventor
Pascal Revirand
Luc Federzoni
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/022—Feeding several successive layers, optionally of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/028—Deflecting the flow of the unshaped material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
    • B30B15/306—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds for multi-layer articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
    • B65B1/14—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of centrifugal type

Definitions

  • the present invention relates mainly to a device for filling a container with at least two materials in granular form, and to a filling process using such a device.
  • the filling of containers for example pressing dies, with granular materials is usually done by a pipe of circular section connected by an upper end to a reservoir of granular material.
  • the granular type materials may have poor flowability because of their particle size, their intrinsic roughness and / or their density. This type of filling is then not satisfactory to ensure a uniform filling of the mold, especially in the case of molds with complex geometry.
  • the document BE899420 discloses a device for loading a silo or tank having a central passage and a deflection surface continuously surrounding the central passage.
  • the material from a hopper passes directly through the central passage for one part and is deflected by the deflection surface for another part. This device not allow loading with two materials without mixing them.
  • the document FR 2,882,029 discloses a filling device with a granular material for filling a matrix of complex shape.
  • This device comprises a rotating body having a central passageway surrounded by a deflector, depending on the speed of rotation of the body, it is possible to control the amount of granular material deflected outwardly of the body or through the passage, thereby improving the homogeneity of filling of a matrix, even of complex shape with a relatively simple device.
  • This device gives complete satisfaction, however it does not allow to perform a simultaneous filling with two granular materials without mixing the two materials.
  • a filling device having a hopper allowing separate feeding of a plurality of granular materials and a rotating body provided with a central channel for the passage of a first type of material, deflecting means surrounding the central channel for deflecting a second type of material, and a central shaft of which an upper end facing the material feed hopper of the first type forms a deflection surface for the first type of material.
  • the filling with both types of material is then carried out without mixing them.
  • the device comprises means for feeding at least two types of materials separately to the right of distinct locations of a distribution means, the distribution means managing the filling without mixing the materials.
  • the present invention also makes it possible to manage the flow rates of the various components.
  • the device according to the present invention allows a good repeatability of the filling.
  • the present invention therefore mainly relates to a filling device for filling with at least two granular materials simultaneously without mixing, comprising a set of hoppers and a distributor disposed downstream of the set of hoppers in a flow direction, all hoppers having at least two hoppers, an inner hopper for feeding a first type of material and an outer hopper for feeding a second type of material, the dispenser having a central passage arranged in line with the inner hopper and deflection means of the second type of material towards the outside of the distributor arranged in line with the outer hopper, said deflection means at least partially bordering the central passage, the distributor being able to rotate about a longitudinal axis, the direction of which is the average direction of flow.
  • the dispenser also comprises a central shaft whose upper end facing the inner hopper forms a deflection surface for the first type of material. This deflection surface has for example a V-shaped or U-shaped profile.
  • the deflection means may have a crown shape with a concave toroidal reflection surface or a crown shape whose reflection surface has a V-shaped cross-section.
  • the central shaft of longitudinal axis can be connected to a wall of the central passage by blades, allowing easy connection to drive means.
  • the blades are advantageously contained in planes inclined with respect to the X axis, which improves the distribution of particles of granular materials.
  • the hopper assembly may include a central channel forming the inner hopper and a peripheral channel forming the outer hopper.
  • the outer channel is for example continuous to form a succession of adjacent channels.
  • the method may advantageously comprise the step of adjusting the speed of rotation of the dispenser and or sections of passage of one or both hoppers during filling.
  • the rotational speed is advantageously fixed at a value allowing an identical flow rate for the two types of material.
  • Granular-type materials are understood in the present description as any material formed of a set of distinct elements of uniform or variable sizes, for example between a few nanometers and several centimeters. Powdered materials are of course covered by this expression.
  • the device comprises a set of feed hoppers 6 for bringing several types of granular materials, two in the example shown, at a dispensing means 8 of these materials without mixing them.
  • Each of the hoppers may be formed of separate compartments containing different materials for the purpose of mixing them at the time of filling.
  • the set of hoppers comprises a first hopper 10 formed by a central channel 10 for feeding a first type of material A, and a second hopper formed by a peripheral channel 12 bordering the central channel 10 for supplying a second type of material B.
  • the peripheral channel 12 has for example an annular shape or is formed by a succession of channels distributed circumferentially.
  • the first type of granular material A is shown schematically by gray beads; and the second type of granular material B is represented by white balls.
  • the central channel 10 and the peripheral channel 12 have a conical shape of common axis, forming a funnel. But one could predict that they have a cylindrical shape, or that one of the two only has a conical shape and the other is a cylindrical shape.
  • the dispensing means 8 is disposed below the feed hopper 6, which is adapted to be rotated about a longitudinal axis X.
  • the axis X has a direction which is the mean direction of flow .
  • Average flow direction means the general direction of the particles of the materials, which extends from the set of hoppers 6 to the bottom of the container, which is in the example shown the vertical direction.
  • the dispensing means comprises a central passage 14 in line with a lower end 10.1 of the central channel 10 of the hopper 6 for guiding the first type of material A towards a central zone A3 of the die 2.
  • the dispensing means also comprises deflection means 16 surrounding the central passage 14.
  • the means 16 are intended to deflect the granular material particles B outwardly away from the axis X.
  • the deflection means 16 are evenly distributed around the central passage 14 and continuously surround the central passage 14, which makes it possible to perform a homogeneous filling in a zone B3 of the outer container of the die 2, surrounding the central zone A3.
  • the deflection means 16 are at the right of a lower end 12.1 of the peripheral channel 12 of the second type of material B.
  • the axis of rotation of the distribution means 8 and that of the central passage 14 are combined, but one could predict that they are separate.
  • the central passage 14 has been shown as a cone of conicity pointing downwards, but a cylindrical shape may be suitable. The shape is chosen to control the trajectory that one wants to impose on the powder.
  • the distributor 8 is placed in the die 2 in its upper part, the set of hoppers located above, the ends 10.1 of the central channel 10 and 12.1 of the peripheral channel 12 of the hopper to the right of the central passage 14 and deflection means 16.
  • the central channel 10 and the peripheral channel 12 are filled with materials A and B respectively.
  • the material A flows in the central passage 14 and the particles of the material B are deflected radially outwardly away from the axis X.
  • the dispenser is disposed near the bottom of the die 2 at the beginning of the filling and rises along the X axis during filling.
  • the dispenser is disposed near the bottom of the die 2 at the beginning of the filling and rises along the X axis during filling.
  • the central zone A3 of the matrix comprises only material A and the peripheral zone B3 comprises only material B.
  • FIG. 2A we can see a first embodiment of a dispenser that can be used in a filling device for Figures 1A to 1D .
  • the distributor comprises a central shaft 18 of X axis rigidly connected to the wall 22 of the central passage 14 by connection means 20.
  • the shaft 18 is engaged with a rotational drive means (not shown) for rotating the distributor.
  • connection means 20 are in the form of planar blades contained in a plane containing the X axis, there are four, but one could also provide arms.
  • the blades are inclined relative to the axis X so as to improve the flow of the granular material A.
  • the deflection means 16 are, in this example formed by a concave ring crown 17, the bottom being, seen in cross section, delimited by an arc of a circle.
  • the ring is delimited by a radially inner circular border 26 and a radially outer circular border 28.
  • the radially inner edge 26 is disposed vertically below the radially outer edge 28. But this is in no way limiting, the two borders could be of the same height, or the radially inner edge 26 could be arranged vertically above the radially outer edge 28
  • the second embodiment of the dispenser shown in the Figure 2B differs from the device of the Figure 2A , in that the deflection means 16 are formed by a ring 17 'having a V-shaped cross-section.
  • the ring is delimited by a radially inner circular edge 26 'and a radially outer circular edge 28'.
  • the radially inner edge 26 ' is disposed vertically below the radially outer edge 28'.
  • V-shaped and U-shaped cross sections offer different flow rates as a function of the rotation speed V D and D respectively, as shown in FIG. figure 4 , which makes it possible to adapt the speed.
  • the arrows designated A1 symbolize the path of the particles of material A, and the arrows designated B1 symbolize the path of particles of material B.
  • the quality of the fills obtained depends on the management of granular material flow rates A and B.
  • the flows of material A and material B can be controlled independently.
  • the flow rate it is possible to control the flow rate by controlling the hopper sections.
  • the flow rates will be constant throughout the filling phase. Fills are not scalable over time, and are therefore constant over height.
  • the invention makes it possible to regulate the flow rate of material B, independently of the flow rate of material A.
  • the speed V is in rev / min and the flow D is in g / s, the material A is stainless steel and the material B is iron powder.
  • the line A2 represents the evolution of the flow rate of material A as a function of the speed, which appears to be independent of the speed, in fact the speed of the distributor has no influence on the flow of the material A in the central passage. 14.
  • the variation of the flow rate of the material B as a function of the speed of rotation of the distributor is of the polynomial type.
  • the speed of rotation to be used will be the point of intersection between the two curves A2 and B2, ie a speed V E the order of 480 rpm.
  • the distributor comprises a central shaft 18 delimiting with the wall an annular channel for the powder A
  • the central shaft 18 has on its upper end on the side of the hopper 10 a deflection surface 32 for the material A.
  • This The surface may have a U-shaped or V-shaped profile, ie it may be in the form of a round-bottom or conical bottom bowl.
  • This deflection surface makes it possible to improve the distribution of the material A, as is schematized on the figure 6 .
  • this variant has the advantage of allowing to keep the bunkers 10, 12 full, outside the filling operations.
  • V I denotes the speed below which the flow rate of material A is zero, ie below which the flow of material A is stopped.
  • the restarting of the filling device is therefore faster, moreover there is more or very little material lost since it is no longer necessary to empty the hoppers.
  • the filling device according to the present invention has been described for two materials A and B, but a filling device for the simultaneous and distinct filling of more than two materials is not outside the scope of the present invention.
  • the device may, for example have a diameter of 15 mm and a height of 10 mm, and the grains of the powder used may have a diameter of 150 microns. This device allows a filling of a few grams to several kilograms, the object will then have a volume of between 1 mm 3 and 1 dm 3 .
  • the filling device (hopper and distributor) rotates about an axis parallel to the X axis and distinct and / or moves parallel to it in order to achieve even more complex distributions.
  • the device according to the present invention is very simple embodiment, in particular the dispenser can for example be made in one piece, for example plastic, metal, it can be manufactured by sintering, laser, machining or molding.
  • the motor can be offset from the axis or located on the axis, it can for example be carried by the axis of the distributor in the case where it has one. In the opposite case, it is also possible to associate a drive system linked to the distributor, for example of the belt, jaw or pawn type.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Chutes (AREA)

Abstract

A filling device, enabling simultaneous filling with at least two granular materials, without mixing them, includes an inner hopper supplying a first type of material and an outer hopper supplying a second type of material, and a dispenser arranged downstream from the hoppers. The dispenser includes a central passageway arranged directly opposite the inner hopper, and a deflecting mechanism towards the exterior of the dispenser arranged directly opposite the outer hopper. The deflecting mechanism at least partially borders the central passageway. The dispenser is capable of rotating about a longitudinal axis, the direction of which is the mean direction of flow, in which the dispenser includes a central shaft including an upper end opposite the inner hopper forming a deflecting surface for the first type of material coming from the inner hopper.

Description

DOMAINE TECHNIQUE ET ART ANTÉRIEURTECHNICAL FIELD AND PRIOR ART

La présente invention se rapporte principalement à un dispositif de remplissage d'un récipient avec au moins deux matériaux sous forme granulaire, et à un procédé de remplissage mettant en oeuvre un tel dispositif.The present invention relates mainly to a device for filling a container with at least two materials in granular form, and to a filling process using such a device.

Le remplissage de récipients, par exemple des matrices de pressage, par des matériaux granulaires s'effectue de manière habituelle par un tuyau de section circulaire raccordé par une extrémité supérieure à un réservoir de matériau granulaire. Or, les matériaux de type granulaire peuvent présenter une mauvaise coulabilité du fait de leur granulométrie, de leur rugosité intrinsèque et/ou de leur densité. Ce type de remplissage n'est alors pas satisfaisant pour assurer un remplissage uniforme du moule, d'autant plus dans le cas de moules à géométrie complexe.The filling of containers, for example pressing dies, with granular materials is usually done by a pipe of circular section connected by an upper end to a reservoir of granular material. However, the granular type materials may have poor flowability because of their particle size, their intrinsic roughness and / or their density. This type of filling is then not satisfactory to ensure a uniform filling of the mold, especially in the case of molds with complex geometry.

Il a été proposé d'améliorer la coulabilité des matériaux par fluidisation de ceux-ci, par exemple au moyen d'un flux d'air. Cependant les moyens à mettre en oeuvre sont complexes.It has been proposed to improve the flowability of the materials by fluidization thereof, for example by means of an air flow. However, the means to be implemented are complex.

Le document BE899420 décrit un dispositif pour charger une silo ou une citerne comportant un passage central et une surface de déflexion entourant de manière continue le passage central. La matière provenant d'une trémie passe directement par le passage central pour une partie et est déviée par la surface de déflexion pour une autre partie. Ce dispositif ne permet pas un chargement avec deux matériaux sans les mélanger.The document BE899420 discloses a device for loading a silo or tank having a central passage and a deflection surface continuously surrounding the central passage. The material from a hopper passes directly through the central passage for one part and is deflected by the deflection surface for another part. This device not allow loading with two materials without mixing them.

Le document FR 2 882 029 décrit un dispositif de remplissage avec un matériau granulaire permettant le remplissage d'une matrice de forme complexe. Ce dispositif comporte un corps rotatif
comportant un passage central entouré d'un déflecteur, en fonction de la vitesse de rotation du corps, il est possible de contrôler la quantité de matériau granulaire déviée vers l'extérieur du corps ou empruntant le passage, ce qui permet d'améliorer l'homogénéité de remplissage d'une matrice, même de forme complexe avec un dispositif relativement simple. Ce dispositif donne entière satisfaction, cependant il ne permet pas d'effectuer un remplissage simultané avec deux matériaux granulaires sans mélanger les deux matériaux.The document FR 2,882,029 discloses a filling device with a granular material for filling a matrix of complex shape. This device comprises a rotating body
having a central passageway surrounded by a deflector, depending on the speed of rotation of the body, it is possible to control the amount of granular material deflected outwardly of the body or through the passage, thereby improving the homogeneity of filling of a matrix, even of complex shape with a relatively simple device. This device gives complete satisfaction, however it does not allow to perform a simultaneous filling with two granular materials without mixing the two materials.

C'est par conséquent un but de la présente invention d'offrir un dispositif de remplissage et un procédé de remplissage permettant un remplissage avec au moins deux matériaux granulaires non mélangés, le récipient rempli comportant des zones formées par chacun des matériaux uniquement.It is therefore an object of the present invention to provide a filling device and a filling method for filling with at least two unmixed granular materials, the filled container having areas formed by each of the materials only.

C'est également un but de la présente invention d'offrir un dispositif de remplissage permettant un remplissage uniforme de tout type de récipient, même de forme complexe.It is also an object of the present invention to provide a filling device for uniform filling of any type of container, even of complex shape.

EXPOSÉ DE L'INVENTIONSTATEMENT OF THE INVENTION

Les buts précédemment énoncés sont atteints par un dispositif de remplissage comportant une trémie permettant l'alimentation séparée en plusieurs matériaux granulaires et un corps rotatif muni d'un canal central pour le passage d'un premier type de matériau, des moyens déflecteurs entourant le canal central pour dévier un deuxième type de matériau, et un arbre central dont une extrémité supérieure en regard de la trémie d'alimentation en matériau du premier type, forme une surface de déflexion pour le premier type de matériau. Le remplissage avec les deux types de matériau s'effectue alors sans les mélanger. Ainsi il est possible de réaliser, par exemple dans le cas de fabrication de pièces par la technologie de compression en matrices, des pièces comportant des zones en matériaux distincts, par un remplissage simultané de différents composants sans les mélanger.The previously stated goals are achieved by a filling device having a hopper allowing separate feeding of a plurality of granular materials and a rotating body provided with a central channel for the passage of a first type of material, deflecting means surrounding the central channel for deflecting a second type of material, and a central shaft of which an upper end facing the material feed hopper of the first type forms a deflection surface for the first type of material. The filling with both types of material is then carried out without mixing them. Thus, it is possible to produce, for example in the case of the manufacture of parts by die compression technology, parts comprising zones made of different materials, by simultaneous filling of different components without mixing them.

En d'autres termes, le dispositif comporte des moyens d'amenée d'au moins deux types de matériaux séparément au droit d'emplacements distincts d'un moyen de répartition, ce moyen de répartition gérant le remplissage sans mélanger les matériaux.In other words, the device comprises means for feeding at least two types of materials separately to the right of distinct locations of a distribution means, the distribution means managing the filling without mixing the materials.

La présente invention permet également de gérer les débits des différents composants.The present invention also makes it possible to manage the flow rates of the various components.

Par ailleurs, le dispositif selon la présente invention permet une bonne répétabilité du remplissage.Furthermore, the device according to the present invention allows a good repeatability of the filling.

La présente invention a alors principalement pour objet un dispositif de remplissage permettant le remplissage avec au moins deux matériaux granulaires simultanément sans les mélanger, comportant un ensemble de trémies et un distributeur disposé en aval de l'ensemble de trémies dans un sens d'écoulement, l'ensemble de trémies comportant au moins deux trémies, une trémie intérieure pour l'alimentation en un premier type de matériau et une trémie extérieure pour l'alimentation en un deuxième type de matériau, le distributeur comportant un passage central disposé au droit de la trémie intérieure et des moyens de déflexion du deuxième type de matériau vers l'extérieur du distributeur disposés au droit de la trémie extérieure, lesdits moyens de déflexion bordant au moins partiellement le passage central, le distributeur étant apte à tourner autour d'un axe longitudinal, dont la direction est la direction moyenne d'écoulement. Le distributeur comporte également un arbre central dont une extrémité supérieure en regard de la trémie intérieure forme une surface de déflexion pour le premier type de matériau. Cette surface de déflexion a par exemple un profil en V ou en U.The present invention therefore mainly relates to a filling device for filling with at least two granular materials simultaneously without mixing, comprising a set of hoppers and a distributor disposed downstream of the set of hoppers in a flow direction, all hoppers having at least two hoppers, an inner hopper for feeding a first type of material and an outer hopper for feeding a second type of material, the dispenser having a central passage arranged in line with the inner hopper and deflection means of the second type of material towards the outside of the distributor arranged in line with the outer hopper, said deflection means at least partially bordering the central passage, the distributor being able to rotate about a longitudinal axis, the direction of which is the average direction of flow. The dispenser also comprises a central shaft whose upper end facing the inner hopper forms a deflection surface for the first type of material. This deflection surface has for example a V-shaped or U-shaped profile.

Les adjectifs « intérieur » et « extérieur » qualifient la position des trémies relativement l'une par rapport à l'autre et ne limitent pas l'invention à une position géométrique des trémies par rapport à la forme géométrique du dispositif selon l'invention.The adjectives "inside" and "outside" describe the position of the hoppers relative to one another and do not limit the invention to a geometric position of the hoppers with respect to the geometric shape of the device according to the invention.

Les moyens de déflexion peuvent avoir une forme de couronne dont la surface de réflexion est torique concave ou une forme de couronne dont la surface de réflexion a une section transversale en forme de V.The deflection means may have a crown shape with a concave toroidal reflection surface or a crown shape whose reflection surface has a V-shaped cross-section.

L'arbre central d'axe longitudinal peut être relié à une paroi du passage central par des pales, permettant une connexion aisée à des moyens d'entraînement.The central shaft of longitudinal axis can be connected to a wall of the central passage by blades, allowing easy connection to drive means.

Les pales sont contenues avantageusement dans des plans inclinés par rapport à l'axe X, ce qui améliore la répartition des particules de matériaux granulaires.The blades are advantageously contained in planes inclined with respect to the X axis, which improves the distribution of particles of granular materials.

L'ensemble de trémies peut comporter un canal central formant la trémie intérieure et un canal périphérique formant la trémie extérieure.The hopper assembly may include a central channel forming the inner hopper and a peripheral channel forming the outer hopper.

Le canal extérieur est par exemple continu pour former une succession de canaux adjacents.The outer channel is for example continuous to form a succession of adjacent channels.

La présente invention a également pour objet un procédé de remplissage d'un récipient au moyen d'un dispositif de remplissage selon la présente invention, comportant les étapes :

  1. a) introduction du distributeur dans une zone supérieure du récipient,
  2. b) mise en rotation du distributeur autour de l'axe longitudinal,
  3. c) alimentation du distributeur avec les deux types de matériau par l'ensemble de trémies.
The present invention also relates to a method of filling a container by means of a filling device according to the present invention, comprising the steps:
  1. a) introducing the dispenser into an upper zone of the container,
  2. b) rotating the distributor around the longitudinal axis,
  3. c) Supply of the dispenser with both types of material by the set of hoppers.

Le procédé peut avantageusement comporter l'étape d'ajustement de la vitesse de rotation du distributeur et ou des sections de passage de l'une ou des deux trémies au cours du remplissage.The method may advantageously comprise the step of adjusting the speed of rotation of the dispenser and or sections of passage of one or both hoppers during filling.

La vitesse de rotation est avantageusement fixée à une valeur permettant un débit identique pour les deux types de matériau.The rotational speed is advantageously fixed at a value allowing an identical flow rate for the two types of material.

BRÈVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

La présente invention sera mieux comprise à l'aide de la description qui va suivre et des dessins annexés, sur desquels :

  • les figures 1A à 1D sont des schémas de principe d'un dispositif de remplissage permettant le remplissage avec au moins deux matériaux dans quatre phases de remplissage,
  • les figures 2A et 2B sont des vues en perspective de deux exemples de réalisation d'un dispositif de remplissage permettant le remplissage avec au moins deux matériaux,
  • les figures 3A et 3B sont des vues en coupe schématique du dispositif de la figure 2B en cours de remplissage,
  • la figure 4 est une représentation graphique de l'évolution du débit en fonction de la vitesse de rotation du dispositif de remplissage selon l'invention pour chacun des matériaux ;
  • la figure 5 est une représentation graphique d'un exemple d'une évolution de la vitesse de rotation du distributeur selon l'invention au cours du temps pour obtenir le remplissage de la figure 3B ;
  • la figure 6 est une vue en coupe schématique d'un exemple de réalisation d'un dispositif de remplissage avec au moins deux matériaux selon l'invention ;
  • la figure 7 est une représentation graphique de l'évolution du débit dans les deux matériaux en fonction de la vitesse de rotation du distributeur selon l'invention.
The present invention will be better understood from the following description and the accompanying drawings, in which:
  • the Figures 1A to 1D are diagrams of a filling device for filling with at least two materials in four filling phases,
  • the Figures 2A and 2B are perspective views of two exemplary embodiments of a filling device for filling with at least two materials,
  • the Figures 3A and 3B are schematic sectional views of the device of the Figure 2B during filling,
  • the figure 4 is a graphical representation of the evolution of the flow rate as a function of the speed of rotation of the filling device according to the invention for each of the materials;
  • the figure 5 is a graphical representation of an example of an evolution of the speed of rotation of the dispenser according to the invention over time to obtain the filling of the figure 3B ;
  • the figure 6 is a schematic sectional view of an exemplary embodiment of a filling device with at least two materials according to the invention;
  • the figure 7 is a graphical representation of the evolution of the flow rate in the two materials as a function of the speed of rotation of the dispenser according to the invention.

EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERSDETAILED PRESENTATION OF PARTICULAR EMBODIMENTS

Les matériaux de type granulaire sont entendus dans le présent exposé comme tous matériaux formés d'un ensemble d'éléments distincts de tailles uniformes ou variables, par exemple comprises entre quelques nanomètres et plusieurs centimètres. Les matériaux en poudre sont bien entendu couverts par cette expression.Granular-type materials are understood in the present description as any material formed of a set of distinct elements of uniform or variable sizes, for example between a few nanometers and several centimeters. Powdered materials are of course covered by this expression.

La description qui suit est faite en relation avec le remplissage d'une matrice ou empreinte pour réaliser des pièces par compression. Mais la présente invention s'applique à tout type de remplissage, dans lequel on souhaite un remplissage simultané avec plusieurs matériaux granulaires mais sans mélange de ceux-ci.The following description is made in connection with the filling of a matrix or impression to produce parts by compression. But the present invention applies to any type of filling, in which it is desired to fill simultaneously with several granular materials but without mixing them.

Sur les figures 1A à 1D, on peut voir différentes étapes de remplissage d'une matrice 2 au moyen d'un dispositif de remplissage 4 représentées de manière schématique.On the Figures 1A to 1D , one can see different steps of filling a matrix 2 by means of a filling device 4 shown schematically.

Le dispositif comporte un ensemble de trémies d'alimentation 6 permettant d'amener plusieurs types de matériaux granulaires, deux dans l'exemple représenté, au niveau d'un moyen de distribution 8 de ces matériaux sans les mélanger. Chacune des trémies peut être formée de compartiments distincts contenant des matériaux différents dans le but de les mélanger au moment du remplissage.The device comprises a set of feed hoppers 6 for bringing several types of granular materials, two in the example shown, at a dispensing means 8 of these materials without mixing them. Each of the hoppers may be formed of separate compartments containing different materials for the purpose of mixing them at the time of filling.

L'ensemble de trémies comporte une première trémie 10 formée par un canal central 10 pour l'alimentation en un premier type de matériau A, et une deuxième trémie formée par un canal périphérique 12 bordant le canal central 10 pour l'alimentation en un deuxième type de matériau B. Le canal périphérique 12 a par exemple une forme annulaire ou est formé par une succession de canaux répartis de manière circonférentielle.The set of hoppers comprises a first hopper 10 formed by a central channel 10 for feeding a first type of material A, and a second hopper formed by a peripheral channel 12 bordering the central channel 10 for supplying a second type of material B. The peripheral channel 12 has for example an annular shape or is formed by a succession of channels distributed circumferentially.

Le premier type de matériau granulaire A est schématisé par des billes grises ; et le deuxième type de matériau granulaire B est représenté par des billes blanches.The first type of granular material A is shown schematically by gray beads; and the second type of granular material B is represented by white balls.

Dans l'exemple représenté, le canal central 10 et le canal périphérique 12 ont une forme conique d'axe commun, formant un entonnoir. Mais on pourrait prévoir qu'ils aient une forme cylindrique, ou que l'un des deux seulement ait une forme conique et l'autre est une forme cylindrique.In the example shown, the central channel 10 and the peripheral channel 12 have a conical shape of common axis, forming a funnel. But one could predict that they have a cylindrical shape, or that one of the two only has a conical shape and the other is a cylindrical shape.

Il est également possible d'utiliser deux trémies distinctes, i.e. dans lequel la paroi du canal central 10 ne forme pas la paroi intérieure du canal périphérique 12, comme cela est représenté sur les figures 3A et 3B qui seront décrites en détail par la suite.It is also possible to use two separate hoppers, ie in which the wall of the central channel 10 does not form the inner wall of the peripheral channel 12, as is shown in FIGS. Figures 3A and 3B which will be described in detail later.

Le moyen de distribution 8 est disposé en dessous de la trémie d'alimentation 6, celui-ci est apte à être entraîné en rotation autour d'un axe longitudinal X. L'axe X a une direction qui est la direction moyenne d'écoulement. On entend par direction moyenne d'écoulement la direction générale des particules des matériaux, qui s'étend de l'ensemble de trémies 6 au fond du récipient, qui est dans l'exemple représenté la direction verticale.The dispensing means 8 is disposed below the feed hopper 6, which is adapted to be rotated about a longitudinal axis X. The axis X has a direction which is the mean direction of flow . Average flow direction means the general direction of the particles of the materials, which extends from the set of hoppers 6 to the bottom of the container, which is in the example shown the vertical direction.

Le moyen de distribution comporte un passage central 14 au droit d'une extrémité inférieure 10.1 du canal central 10 de la trémie 6 pour le guidage du premier type de matériau A vers une zone centrale A3 de la matrice 2.The dispensing means comprises a central passage 14 in line with a lower end 10.1 of the central channel 10 of the hopper 6 for guiding the first type of material A towards a central zone A3 of the die 2.

Le moyen de distribution comporte également des moyens de déflexion 16 entourant le passage central 14. Les moyens 16 sont destinés à dévier les particules du matériau granulaires B vers l'extérieur en éloignement de l'axe X.The dispensing means also comprises deflection means 16 surrounding the central passage 14. The means 16 are intended to deflect the granular material particles B outwardly away from the axis X.

De manière avantageuse, les moyens de déflexion 16 sont répartis de manière uniforme autour du passage central 14 et entourent de manière continue le passage central 14, ce qui permet d'effectuer un remplissage homogène dans une zone B3 du récipient externe de la matrice 2, entourant la zone centrale A3.Advantageously, the deflection means 16 are evenly distributed around the central passage 14 and continuously surround the central passage 14, which makes it possible to perform a homogeneous filling in a zone B3 of the outer container of the die 2, surrounding the central zone A3.

Les moyens de déflexion 16 se trouvent au droit d'une extrémité inférieure 12.1 du canal périphérique 12 du deuxième type de matériau B.The deflection means 16 are at the right of a lower end 12.1 of the peripheral channel 12 of the second type of material B.

Dans l'exemple représenté, l'axe de rotation du moyen de distribution 8 et celui du passage central 14 sont confondus, mais on pourrait prévoir qu'ils soient distincts.In the example shown, the axis of rotation of the distribution means 8 and that of the central passage 14 are combined, but one could predict that they are separate.

Par ailleurs, le passage central 14 a été représenté sous forme de cône de conicité orientée vers le bas, mais une forme cylindrique peut convenir. La forme est choisie pour maîtriser la trajectoire que l'on veut imposer à la poudre.On the other hand, the central passage 14 has been shown as a cone of conicity pointing downwards, but a cylindrical shape may be suitable. The shape is chosen to control the trajectory that one wants to impose on the powder.

Nous allons maintenant décrire les différentes étapes de remplissage mettant en oeuvre le dispositif de remplissage des figures 1A à 1D.We will now describe the various filling steps using the filling device of the Figures 1A to 1D .

Sur la figure 1A, le distributeur 8 est mis en place dans la matrice 2 dans sa partie supérieure, l'ensemble de trémies se trouvant au-dessus, les extrémités 10.1 du canal central 10 et 12.1 du canal périphérique 12 de la trémie au droit du passage central 14 et des moyens de déflexion 16. Le canal central 10 et le canal périphérique 12 sont remplis de matériaux A et B respectivement.On the Figure 1A , the distributor 8 is placed in the die 2 in its upper part, the set of hoppers located above, the ends 10.1 of the central channel 10 and 12.1 of the peripheral channel 12 of the hopper to the right of the central passage 14 and deflection means 16. The central channel 10 and the peripheral channel 12 are filled with materials A and B respectively.

Sur la figure 1B, le distributeur est mis en rotation autour de l'axe X et les matériaux A et B s'écoulent vers le distributeur 8. La rotation est symbolisée par la flèche 15.On the Figure 1B , the distributor is rotated about the X axis and materials A and B flow to the distributor 8. The rotation is symbolized by the arrow 15.

Le matériau A s'écoule dans le passage central 14 et les particules du matériau B sont déviées radialement vers l'extérieur en éloignement de l'axe X.The material A flows in the central passage 14 and the particles of the material B are deflected radially outwardly away from the axis X.

Sur la figure 1C, une partie de ces particules vient frapper la paroi intérieure de la matrice 2 et est déviée une deuxième fois, l'autre partie tombe directement dans le fond de la matrice 2.On the figure 1C a part of these particles strikes the inner wall of the matrix 2 and is diverted a second time, the other part falls directly into the bottom of the matrix 2.

Sur la figure 1D, qui schématise la fin du remplissage, on peut voir la répartition des particules A et B obtenue grâce au dispositif des figures 1A à 1D.On the figure 1D , which schematizes the end of the filling, we can see the distribution of particles A and B obtained thanks to the device of the Figures 1A to 1D .

On peut également envisager que le distributeur soit disposé près du fond de la matrice 2 au début du remplissage et remonte le long de l'axe X pendant le remplissage. Ainsi, en gérant la hauteur, on maîtrise la trajectoire et donc la précision du remplissage.It is also conceivable that the dispenser is disposed near the bottom of the die 2 at the beginning of the filling and rises along the X axis during filling. Thus, by managing the height, we control the trajectory and therefore the accuracy of the filling.

La zone centrale A3 de la matrice comporte uniquement du matériau A et la zone périphérique B3 comporte uniquement du matériau B.The central zone A3 of the matrix comprises only material A and the peripheral zone B3 comprises only material B.

Ainsi, grâce à la présente invention, il est possible d'obtenir un remplissage de plusieurs matériaux granulaires non mélangés.Thus, thanks to the present invention, it is possible to obtain a filling of several unmixed granular materials.

Sur la figure 2A, on peut voir un premier exemple de réalisation d'un distributeur utilisable dans un dispositif de remplissage des figures 1A à 1D.On the Figure 2A , we can see a first embodiment of a dispenser that can be used in a filling device for Figures 1A to 1D .

Le distributeur comporte un arbre central 18 d'axe X raccordé rigidement à la paroi 22 du passage central 14 par des moyens de connexion 20.The distributor comprises a central shaft 18 of X axis rigidly connected to the wall 22 of the central passage 14 by connection means 20.

L'arbre 18 est en prise avec un moyen d'entraînement en rotation (non représenté), permettant de mettre en rotation le distributeur.The shaft 18 is engaged with a rotational drive means (not shown) for rotating the distributor.

Dans l'exemple représenté, les moyens de connexion 20 sont sous forme de pales planes contenues dans un plan contenant l'axe X, celles-ci sont au nombre de quatre, mais on pourrait également prévoir des bras.In the example shown, the connection means 20 are in the form of planar blades contained in a plane containing the X axis, there are four, but one could also provide arms.

De manière avantageuse, les pales sont inclinées par rapport à l'axe X de manière à améliorer l'écoulement du matériau granulaire A.Advantageously, the blades are inclined relative to the axis X so as to improve the flow of the granular material A.

Les moyens de déflexion 16 sont, dans cet exemple formés par une couronne 17 torique concave, le fond étant, vu en coupe transversale, délimité par un arc de cercle.The deflection means 16 are, in this example formed by a concave ring crown 17, the bottom being, seen in cross section, delimited by an arc of a circle.

La couronne est délimitée par une bordure circulaire radialement intérieure 26 et une bordure circulaire radialement extérieure 28.The ring is delimited by a radially inner circular border 26 and a radially outer circular border 28.

Dans l'exemple représenté, la bordure radialement intérieure 26 est disposée verticalement en dessous de la bordure radialement extérieure 28. Mais ceci n'est aucunement limitatif, les deux bordures pourraient être de la même hauteur, ou la bordure radialement intérieure 26 pourrait être disposée verticalement au dessus de la bordure radialement extérieure 28In the example shown, the radially inner edge 26 is disposed vertically below the radially outer edge 28. But this is in no way limiting, the two borders could be of the same height, or the radially inner edge 26 could be arranged vertically above the radially outer edge 28

Le deuxième mode de réalisation du distributeur représenté sur la figure 2B se distingue du dispositif de la figure 2A, en ce que les moyens de déflexion 16 sont formés par une couronne 17' ayant une section transversale en forme de V.The second embodiment of the dispenser shown in the Figure 2B differs from the device of the Figure 2A , in that the deflection means 16 are formed by a ring 17 'having a V-shaped cross-section.

La couronne est délimitée par une bordure circulaire radialement intérieure 26' et une bordure circulaire radialement extérieure 28'.The ring is delimited by a radially inner circular edge 26 'and a radially outer circular edge 28'.

Dans l'exemple représenté, la bordure radialement intérieure 26' est disposée verticalement en dessous de la bordure radialement extérieure 28'.In the example shown, the radially inner edge 26 'is disposed vertically below the radially outer edge 28'.

Les sections transversales en V et en U offrent des évolutions du débit en fonction de la vitesse de rotation V Dv et Du respectivement différentes, comme cela est représenté sur la figure 4, ce qui permet d'adapter la vitesse.The V-shaped and U-shaped cross sections offer different flow rates as a function of the rotation speed V D and D respectively, as shown in FIG. figure 4 , which makes it possible to adapt the speed.

Sur la figure 3A, on peut voir le dispositif selon le deuxième exemple de réalisation du distributeur de la figure 2B en cours de remplissage.On the figure 3A , one can see the device according to the second embodiment of the distributor of the Figure 2B during filling.

Les flèches désignées par A1 symbolisent le trajet des particules du matériau A, et les flèches désignées par B1 symbolisent le trajet des particules du matériau B.The arrows designated A1 symbolize the path of the particles of material A, and the arrows designated B1 symbolize the path of particles of material B.

En outre, la qualité des remplissages obtenus dépend de la gestion des débits de matériaux granulaires A et B.In addition, the quality of the fills obtained depends on the management of granular material flow rates A and B.

Grâce à la présente invention, les débits en matériau A et en matériau B peuvent être contrôlés indépendamment.Thanks to the present invention, the flows of material A and material B can be controlled independently.

Il est par exemple possible de contrôler le débit en contrôlant les sections de passage des trémies. Dans ce cas, les débits seront constants tout au long de la phase de remplissage. Les remplissages ne sont alors pas évolutifs au cours du temps, et sont donc constants sur la hauteur.For example, it is possible to control the flow rate by controlling the hopper sections. In this case, the flow rates will be constant throughout the filling phase. Fills are not scalable over time, and are therefore constant over height.

On pourrait également envisager des trémies à section de passage variable.We could also consider hoppers section variable passage.

Afin de réaliser la gestion des débits, l'invention permet de réguler le débit du matériau B, indépendamment du débit du matériau A.In order to achieve flow management, the invention makes it possible to regulate the flow rate of material B, independently of the flow rate of material A.

Il est également possible d'anticiper le type de remplissage possible en utilisant les évolutions du débit de chacun des matériaux A et B en fonction de la vitesse de rotation du distributeur, ces évolutions étant représentées sur la figure 4.It is also possible to anticipate the type of filling possible by using the evolutions of the flow of each of the materials A and B as a function of the speed of rotation of the distributor, these evolutions being represented on the figure 4 .

La vitesse V est en tour/min et le débit D est en g/s, le matériau A est de l'inox et le matériau B est de la poudre de fer.The speed V is in rev / min and the flow D is in g / s, the material A is stainless steel and the material B is iron powder.

La droite A2 représente l'évolution du débit en matériau A en fonction de la vitesse, celle-ci apparaît comme indépendant de la vitesse, en effet la vitesse du distributeur n'a aucune influence sur l'écoulement du matériau A dans le passage central 14.The line A2 represents the evolution of the flow rate of material A as a function of the speed, which appears to be independent of the speed, in fact the speed of the distributor has no influence on the flow of the material A in the central passage. 14.

Par contre, la variation du débit du matériau B en fonction de la vitesse de rotation du distributeur est du type polynomial.On the other hand, the variation of the flow rate of the material B as a function of the speed of rotation of the distributor is of the polynomial type.

On peut alors déterminer automatiquement la vitesse de rotation à utiliser.We can then automatically determine the rotation speed to use.

Dans le cas où les volumes que l'on souhaite remplir sont identiques et constants suivant la hauteur, la vitesse de rotation à utiliser sera donc le point d'intersection entre les deux courbes A2 et B2, i.e. une vitesse VE l'ordre de 480 tr/min.In the case where the volumes which one wishes to fill are identical and constant according to the height, the speed of rotation to be used will be the point of intersection between the two curves A2 and B2, ie a speed V E the order of 480 rpm.

Si l'on souhaite modifier la répartition des matériaux A et B suivant la hauteur, il suffit de faire varier la vitesse de rotation du distributeur pendant le remplissage afin de réaliser des remplissages du type de celui représenté sur la figure 3B, dans lequel la zone composée du matériau A a, vue en coupe, la forme sensiblement d'une ellipse.If it is desired to modify the distribution of materials A and B according to the height, it suffices to vary the speed of rotation of the dispenser during filling in order to make fillings of the type of that shown in FIG. figure 3B , in which the zone composed of the material A has, in section, the shape substantially of an ellipse.

Sur la figure 5, est représentée l'évolution de la vitesse du distributeur pour obtenir la répartition de la figure 3B. On peut voir que la vitesse est augmentée pendant une première phase I jusqu'à atteindre la zone de plus grand diamètre, puis la vitesse est réduite jusqu'à la fin du remplissage pendant une deuxième phase II. Les deux phases étant de durée égale et les vitesses extrêmes étant les mêmes, on obtient une forme symétrique par rapport à un plan horizontal P.On the figure 5 , is represented the evolution of the speed of the distributor to obtain the distribution of the figure 3B . It can be seen that the speed is increased during a first phase I until reaching the larger diameter zone, then the speed is reduced until the end of the filling during a second phase II. Since the two phases are of equal duration and the extreme speeds are the same, a symmetrical shape is obtained with respect to a horizontal plane P.

Ainsi, afin de déterminer les paramètres du procédé de remplissage, il convient donc, à partir des volumes mis en jeux et du type de répartition souhaitée, de remonter aux paramètres de vitesse de rotation du distributeur.Thus, to determine the parameters of the filling process, it is therefore necessary, from the volumes involved and the desired type of distribution, to go back to the rotation speed parameters of the dispenser.

Sur la figure 6, on peut voir un exemple de réalisation d'un dispositif de remplissage selon la présente invention, dans lequel le distributeur comporte un arbre central 18 délimitant avec la paroi un canal annulaire pour la poudre A, cet arbre central 18 comporte sur son extrémité supérieure du côté de la trémie 10 une surface de déflexion 32 pour le matériau A. Cette surface peut avoir un profil en U ou en V, i.e. elle peut avoir la forme d'une cuvette à fond arrondie ou à fond conique.On the figure 6 , one can see an embodiment of a filling device according to the invention, in which the distributor comprises a central shaft 18 delimiting with the wall an annular channel for the powder A, the central shaft 18 has on its upper end on the side of the hopper 10 a deflection surface 32 for the material A. This The surface may have a U-shaped or V-shaped profile, ie it may be in the form of a round-bottom or conical bottom bowl.

Cette surface de déflexion permet d'améliorer la répartition du matériau A, comme cela est schématisé sur la figure 6.This deflection surface makes it possible to improve the distribution of the material A, as is schematized on the figure 6 .

Par ailleurs, cette variante présente l'avantage de permettre de conserver les trémies 10, 12 pleines, en dehors des opérations de remplissage.Furthermore, this variant has the advantage of allowing to keep the bunkers 10, 12 full, outside the filling operations.

En effet, lorsque le distributeur est à l'arrêt, les poudre A et B s'entassent dans les cuvettes et finissent par boucher les orifices des trémies 10 et 12, l'écoulement s'arrête alors naturellement sans avoir à vider complémentent les trémies, comme cela est visible sur la figure 7 représentant l'évolution du débit DA et DB de chaque matériaux A et B respectivement, en fonction de la vitesse V de rotation du distributeur. VI désigne la vitesse en dessous de laquelle le débit en matériau A est nulle, i.e. en dessous de laquelle l'écoulement en matériau A est arrêté.In fact, when the dispenser is stopped, the powder A and B pile up in the cuvettes and end up clogging the orifices of the hoppers 10 and 12, the flow then stops naturally without emptying the hoppers , as is visible on the figure 7 representing the evolution of the flow rate D A and D B of each material A and B respectively, as a function of the speed V of rotation of the distributor. V I denotes the speed below which the flow rate of material A is zero, ie below which the flow of material A is stopped.

La remise en route du dispositif de remplissage est donc plus rapide, de plus il n'y a plus ou très peu de matériaux perdus puisqu'il n'est plus nécessaire de vidanger les trémies.The restarting of the filling device is therefore faster, moreover there is more or very little material lost since it is no longer necessary to empty the hoppers.

Grâce à la présente invention, il est donc possible en contrôlant les débits, par exemple en modifiant simplement la vitesse de rotation du distributeur et/ ou les sections de passage de la trémie de réaliser une répartition de forme complexe de chaque matériau.With the present invention, it is therefore possible by controlling the flow rates, for example by simply changing the speed of rotation of the dispenser and / or the passage sections of the hopper to achieve a complex shape distribution of each material.

Le dispositif de remplissage selon la présente invention a été décrit pour deux matériaux A et B, mais un dispositif de remplissage permettant le remplissage simultané et distinct de plus de deux matériaux ne sort pas du cadre de la présente invention.The filling device according to the present invention has been described for two materials A and B, but a filling device for the simultaneous and distinct filling of more than two materials is not outside the scope of the present invention.

En effet on pourrait prévoir trois trémies concentriques ou plus, et un distributeur muni d'un canal central, un canal périphérique et des moyens de déflexion entourant le canal périphérique et disposés chacun au droit d'une trémie correspondante.Indeed, one could provide three or more concentric hoppers, and a distributor provided with a central channel, a peripheral channel and deflection means surrounding the peripheral channel and each disposed to the right of a corresponding hopper.

Le dispositif peut, par exemple avoir un diamètre de 15 mm et une hauteur de 10 mm, et les grains de la poudre utilisée peuvent avoir un diamètre de 150 µm. Ce dispositif permet un remplissage de quelques grammes à plusieurs kilogrammes, l'objet aura alors un volume compris entre 1 mm3 et 1 dm3.The device may, for example have a diameter of 15 mm and a height of 10 mm, and the grains of the powder used may have a diameter of 150 microns. This device allows a filling of a few grams to several kilograms, the object will then have a volume of between 1 mm 3 and 1 dm 3 .

On peut également envisager que le dispositif de remplissage (trémie et distributeur) tourne autour d'un axe parallèle à l'axe X et distinct celui-ci et/ou se déplace parallèlement à celui-ci afin de réaliser des répartitions encore plus complexes.It is also conceivable that the filling device (hopper and distributor) rotates about an axis parallel to the X axis and distinct and / or moves parallel to it in order to achieve even more complex distributions.

Le dispositif selon la présente invention est de réalisation très simple, notamment le distributeur peut par exemple être réalisé en une seule pièce, par exemple en plastique, en métal, il peut être fabriqué par frittage, laser, par usinage ou par moulage.The device according to the present invention is very simple embodiment, in particular the dispenser can for example be made in one piece, for example plastic, metal, it can be manufactured by sintering, laser, machining or molding.

Le moteur peut être déporté de l'axe ou situé sur l'axe, il peut par exemple être porté par l'axe du distributeur dans le cas où celui-ci en comporte un. Dans le cas contraire, on peut aussi associer uns système d'entraînement lié au distributeur, par exemple du type courroie, mâchoire ou pion.The motor can be offset from the axis or located on the axis, it can for example be carried by the axis of the distributor in the case where it has one. In the opposite case, it is also possible to associate a drive system linked to the distributor, for example of the belt, jaw or pawn type.

Claims (11)

  1. Filling device enabling simultaneous filling with at least two granular materials, without mixing them, which comprises a hopper assembly (6) and a dispenser (8) arranged downstream from the hopper assembly (6) in a direction of flow, the dispenser (8) comprising a central passageway (14), and means of deflecting (16) the second type of material (B) towards the exterior of the dispenser, said deflecting means (16) at least partially bordering the central passageway (14), the dispenser (8) being capable of rotating about a longitudinal axis (X) the direction of which is the mean direction of flow, characterized in that the hopper assembly (6) comprises at least two hoppers (10, 12), an inner hopper (10) for supplying a first type of material (A), and an outer hopper (12) for supplying a second type of material (B), the means of deflecting the second type of material being arranged directly opposite the outer hopper, and in that the dispenser comprises a central shaft (18) located in the central passageway and delimiting with the wall of the central passageway an annular passageway for the flow of the first type of material (A), the central shaft (18) comprising an upper end (32) opposite the inner hopper (10) forming a deflecting surface four the first type of material (A).
  2. Filling device according to claim 1, in which the deflecting means (16) have a crown shape (17) the deflecting surface of which is a concave toric.
  3. Filling device according to claim 1, in which the deflecting means (16) have a crown shape (17') the deflecting surface of which has a V-shaped transverse section.
  4. Filling device according to one of claims 1 to 3, in which the central shaft of longitudinal axis (X) is connected to a wall (22) of the central passageway (14) via blades (20).
  5. Filling device according to the preceding claim, in which the blades (20) are contained in planes which are inclined in relation to the longitudinal axis (X).
  6. Filling device according to one of the preceding claims, in which the deflecting surface (32) has a V-profile or a U-profile.
  7. Filling device according to one of claims 1 to 6, in which the hopper assembly (6) comprises a central channel (10) forming the inner hopper and a peripheral channel (12) forming the outer hopper.
  8. Filling device according to the preceding claim, in which the peripheral channel (12) is continuous or formed by a succession of separate channels.
  9. Method of filling a container (2) by means of a filling device according to one of claims 1 to 8, comprising the steps of:
    a) introducing the dispenser (8) into the container (2),
    b) rotating the dispenser (8) about the longitudinal axis (X),
    c) supplying the dispenser (8) with the two types of material via the hopper assembly.
  10. Filling method according to claim 9, comprising the step of adjusting the rotational speed of the dispenser (8) and/or the flow areas of one or both of the hoppers during filling.
  11. Method according to claim 10, in which the rotational speed is set to a value which enables an identical flow rate for both types of material.
EP08759833A 2007-05-23 2008-05-21 Filling device for at least two granular materials and filling method using such a device Not-in-force EP2167259B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0755223A FR2916427B1 (en) 2007-05-23 2007-05-23 FILLING DEVICE FOR AT LEAST TWO GRANULAR MATERIALS AND FILLING METHOD USING SUCH A DEVICE
PCT/EP2008/056229 WO2008142092A1 (en) 2007-05-23 2008-05-21 Filling device for at least two granular materials and filling method using such a device

Publications (2)

Publication Number Publication Date
EP2167259A1 EP2167259A1 (en) 2010-03-31
EP2167259B1 true EP2167259B1 (en) 2011-11-23

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Application Number Title Priority Date Filing Date
EP08759833A Not-in-force EP2167259B1 (en) 2007-05-23 2008-05-21 Filling device for at least two granular materials and filling method using such a device

Country Status (8)

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US (1) US8316896B2 (en)
EP (1) EP2167259B1 (en)
JP (1) JP5243528B2 (en)
CN (1) CN101743079B (en)
AT (1) ATE534480T1 (en)
ES (1) ES2376388T3 (en)
FR (1) FR2916427B1 (en)
WO (1) WO2008142092A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7321824B1 (en) * 2002-12-30 2008-01-22 Aol Llc Presenting a travel route using more than one presentation style
DE102014006374A1 (en) * 2014-05-05 2015-11-05 Gkn Sinter Metals Engineering Gmbh Apparatus for producing a blank together with a method for this and blank
EP3326737B1 (en) * 2016-11-25 2020-04-08 Höganäs AB (publ) Distributor device for a filling shoe for compression moulding
CN113333746B (en) * 2021-07-21 2022-12-16 浙江中平粉末冶金有限公司 Stamping equipment for powder metallurgy

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145345B1 (en) * 1967-11-17 1976-12-03
SU609633A2 (en) * 1975-07-11 1978-06-05 Кишиневский Политехнический Институт Им. С.Лазо Apparatus for depositing concrete mix
BE899420A (en) * 1984-04-13 1984-07-31 Transtec Operating Ltd Company Material delivery feed for silo - has curved projector blades at outlet to vary distribution of feed
JPH072506Y2 (en) * 1987-01-30 1995-01-25 三菱原子燃料株式会社 Powder filling equipment
JPH0810608A (en) * 1994-07-01 1996-01-16 C C A Kk Simultaneous supply device of particles of different kinds and molding method of patterned molded object using the device
JP2761857B2 (en) * 1995-06-26 1998-06-04 千代田技研工業株式会社 Manufacturing method and equipment for patterned concrete blocks
FR2862893B1 (en) * 2003-11-28 2006-02-24 Commissariat Energie Atomique DEVICE FOR FILLING A MOLD WITH A POWDER OR A MIXTURE OF POWDERS
FR2882029B1 (en) * 2005-02-14 2011-03-11 Commissariat Energie Atomique DEVICE FOR DISPENSING AT LEAST ONE GRANULAR MATERIAL IN A CONTAINER, FILLING DEVICE AND FILLING METHOD USING SUCH A DEVICE

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Publication number Publication date
CN101743079A (en) 2010-06-16
JP5243528B2 (en) 2013-07-24
CN101743079B (en) 2012-07-04
WO2008142092A1 (en) 2008-11-27
FR2916427B1 (en) 2012-01-13
JP2010527853A (en) 2010-08-19
ATE534480T1 (en) 2011-12-15
US8316896B2 (en) 2012-11-27
FR2916427A1 (en) 2008-11-28
ES2376388T3 (en) 2012-03-13
EP2167259A1 (en) 2010-03-31
US20100320223A1 (en) 2010-12-23

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