WO2007003758A1 - Product compaction method and device for implementing same - Google Patents

Product compaction method and device for implementing same Download PDF

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Publication number
WO2007003758A1
WO2007003758A1 PCT/FR2006/001498 FR2006001498W WO2007003758A1 WO 2007003758 A1 WO2007003758 A1 WO 2007003758A1 FR 2006001498 W FR2006001498 W FR 2006001498W WO 2007003758 A1 WO2007003758 A1 WO 2007003758A1
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WO
WIPO (PCT)
Prior art keywords
products
vibration generator
vibration
energy
frequency
Prior art date
Application number
PCT/FR2006/001498
Other languages
French (fr)
Inventor
André MOLIN
Original Assignee
Solios Carbone
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 Solios Carbone filed Critical Solios Carbone
Priority to DE06778692T priority Critical patent/DE06778692T1/en
Priority to CA2612993A priority patent/CA2612993C/en
Priority to DE602006003662T priority patent/DE602006003662D1/en
Priority to EP06778692A priority patent/EP1896248B1/en
Publication of WO2007003758A1 publication Critical patent/WO2007003758A1/en
Priority to NO20080513A priority patent/NO20080513L/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements

Definitions

  • TiTRE Compaction method of products and device for implementing the method.
  • the invention relates to a product compaction method and a device for implementing the method.
  • compaction devices such as in particular that of vibrotass recipients
  • machines are known in particular to form anodic blocks molded by compression and vibratory settlement of the paste which constitutes them.
  • the dough is poured into a mold resting on a vibrating table.
  • the mold is closed at its upper part by an pressing mass which rests on the dough.
  • the vibrating table rests on the ground via elastic elements.
  • the vertical vibrations are generated by two systems with synchronous rotation unbalanced trees and in phase opposition at a fixed speed throughout the period of vibrotassage.
  • the unbalanced shafts are rotated by an electric motor powered by a frequency converter.
  • the packing of the dough brings about a variation in the elasticity of the dough and thus a variation in the vibratory behavior of the pressing mass and that of the whole machine.
  • Apparent density is one of the criteria that defines the quality of an anode. It is known that for a given configuration of the machine and for a given quality of the dough corresponds a rotational speed of the unbalanced shafts which give the best results in terms of apparent density of the produced anodes. For most machines, the rotational speed of unbalanced shafts is determined intuitively or by a posteriori analysis of the anodes produced according to an experimental design. Given the variations in the quality of the dough, this speed is in practice not optimized.
  • the object of the present invention is to remedy these drawbacks by proposing a method of compaction of products by vibrotassage, the frequency of which of the vibrations transmitted to the products is regulated in such a way as to obtain optimum packing of the products.
  • Another object of the invention is to propose a device for implementing the method.
  • the invention firstly relates to a product compaction method, such as in particular a paste for the formation of anodes, via a compaction device having at least one mold, intended to receive the products, and a vibration generator adapted to transmit the vibrations to the products, wherein the products contained in the mold are subjected to vibration by vibrating them, characterized in that the frequency of the vibrations is determined so as to ensure optimum packing according to the energy consumed by the vibration generator during a vibrotassage phase.
  • a product compaction method such as in particular a paste for the formation of anodes
  • a compaction device having at least one mold, intended to receive the products, and a vibration generator adapted to transmit the vibrations to the products, wherein the products contained in the mold are subjected to vibration by vibrating them, characterized in that the frequency of the vibrations is determined so as to ensure optimum packing according to the energy consumed by the vibration generator during a vibrotassage phase.
  • the invention also relates to a compaction device for implementing the compaction method, device comprising at least one mold, intended to receive products, and an unbalanced vibration generator, equipped with motor means, said generator being adapted to transmitting the vibrations to the products, characterized in that the device has means for measuring the energy consumed by the vibration generator and a logic processing unit for controlling the speed of unbalance, the logic unit of treatment having means for reading the measured consumed energy.
  • FIG. 1 is a schematic view of a device used in the compaction process according to the invention
  • FIG. 2 is a graph representing, for three different configurations of vibrators, the apparent density of the products obtained as a function of the rotational speed of the unbalanced shafts;
  • FIG. 3 is a diagram illustrating the operation by iteration of a method of compaction of products according to the invention according to one embodiment.
  • the invention relates to a method of compaction of products, in particular vibrotassage, implementing a vibration system to unbalance trees.
  • FIG. 2 illustrates, with three curves, the apparent density of products obtained by a vibrocompaction method, as a function of the speed of rotation of the unbalanced shafts of compaction devices.
  • Each curve corresponds to a different configuration of the compaction device or to a different pasta quality. Whatever the quality of the pulp used or whatever the compaction device used, it can be seen that each curve passes through a maximum, that is to say an optimum apparent density, which corresponds to a speed rotation of unbalanced shafts and therefore at a given vibration frequency.
  • the invention is based on the assumption that the apparent density, on the same compaction device, from the same quality of dough is all the better that the energy absorbed by the products during the vibrotassage phase is big. Therefore, finding the frequency of vibration that causes the greatest energy consumption during the vibro-massage phase is equivalent to finding the vibration frequency that will give the best apparent density of the products.
  • the invention therefore firstly relates to a method of compaction of products 2, such as in particular a paste for the formation of anodes, by means of a compaction device 1, based on these characteristics.
  • the compaction device has at least one mold 3, intended to receive the products 2 and a vibration generator 5, capable of transmitting the vibrations to the products 2. Then the products 2 contained in the mold 3 are subjected to vibration by subjecting them to vibration .
  • the frequency of the vibrations ensuring optimum tamping is determined according to the energy consumed by the vibration generator 5 during a vibrocompaction phase.
  • vibrotassage phase is meant a time base shorter than the time necessary to ensure the final compression state of the products.
  • the method according to the invention makes it possible to constantly search for and adjust the frequency of vibrations to ensure optimum packing of the products throughout the compaction process.
  • a compaction device 1 may be equipped, in particular, with a pressing form 4, capable of compressing the products 2 contained in the mold 3. The products are then mulled by subjecting them to besides, to a compressive effort.
  • the mold 3 has a bottom wall and a side wall.
  • the vibration generator 5, especially unbalanced can be in the form of a vibrating table 8.
  • the vibrating table 8 comprises a plurality of unbalanced shafts driven by motor means, including electrical.
  • the vertical vibrations, according to a variant, are generated by two unbalanced shafts, in synchronous rotation and in phase opposition.
  • the vibrating table 8 rests on the ground via elastic elements 7, in particular inflatable.
  • the frequency of the vibrations ensuring optimum tamping by iteration is determined, and for each iteration, the energy consumed by the vibration generator 5 during a vibrotassage phase and for a fixed vibration frequency is measured.
  • the vibration generator can be controlled in such a way that the energy consumed during a vibrocompaction phase is maximum.
  • the energy consumed during a vibrotassage phase, at a given fixed frequency may correspond to the energy total, especially electrical, consumed by the vibration generator 5 at a given fixed frequency, removed from the energy consumed by the vibration generator 5 at said given fixed frequency, when the compaction device 1 runs empty, that is, that is to say without product in the mold 3.
  • the measurements of the energy consumed by the generator 5 when the device runs empty may be carried out beforehand, in particular during an initialization phase of the device and for example during the first getting started.
  • the measurements can be stored in a memory of a logic processing unit for controlling the vibration generator 5.
  • the vibration generator 5 is provided with imbalances driven in rotation by motor means. According to this embodiment, it is then possible to control the speed of rotation of the imbalances 6 so as to ensure optimum packing of the products.
  • the energy consumed by the vibration generator 5 for a fixed vibration frequency, over a given measurement period Pn, is measured cyclically 40, 70 for each iteration. said measuring period being substantially greater than the period of the vibrations.
  • one proceeds by successive iterations and for each iteration:
  • the frequency of the vibrations of a positive or negative increment is modified, the energy consumed by the vibration generator is measured over a period Pn of determined measurements,
  • the measured energy Eb is compared with the measurement period Pn and the measured energy Ea over the period Pn-1 of the preceding measurement, and in the case of a measured energy drop Ea> Eb, 90 the sign of the increment.
  • the frequency of the vibrations by modifying the setpoint of the excitation motor Spv by an increment Iv in particular of fixed absolute value.
  • the value of the increment Iv can be adjusted experimentally between 1 rpm and 5 rpm.
  • the measurement period Pn must be significant with respect to the vibration period, in particular the pressing mass and the excitation period. According to one variant, the measurement period Pn is of the order of 0.2 to 0.5 sec.
  • the increment, in particular frequency or speed Iv may be variable, determined in correlation with the absolute value of the difference in energy consumed Eb - Ea by the vibration generator for two periods Pn - 1, Pn of successive measurements.
  • the first energy measurement 40 after the establishment of a determined minimum vibration frequency, in particular a minimum rotational speed of the unbalanced shafts.
  • the establishment of a determined minimum vibration frequency can be obtained by means of a time delay 30 allowing in particular the establishment of a minimum engine speed.
  • the vibration generator 5 can be controlled between a minimum vibration frequency and a maximum vibration frequency, and in particular in the case of an unbalance device between a lower limit speed and an upper limit speed of unbalance rotation.
  • the latter can be equipped with an electric motor controlled by a frequency converter. According to the method, the energy consumed by the vibration generator 5 is measured by integrating the instantaneous power measurement supplied by the frequency converter.
  • the invention also relates to a compaction device for implementing the compaction process.
  • the compaction device 1 has at least one mold 3 for receiving products 2 and a vibration generator 5 capable of transmitting the vibrations to the products.
  • the device has means for measuring the energy consumed by the vibration generator 5 as well as a logic processing unit for controlling the vibration frequency of said vibration generator 5, the logic unit of FIG. treatment comprising means for reading the measured consumed energy.
  • the compaction device also has an urgent form 4 capable of compressing the products 2 contained in the mold 3.
  • the vibration generator 5 may be an unbalanced vibration generator 6 equipped with motor means.
  • the logic processing unit then allows the control of the unbalance speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Fish Paste Products (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing Of Solid Wastes (AREA)
  • Container Filling Or Packaging Operations (AREA)

Abstract

The invention relates to a method of compacting products (2), such as a paste for forming anodes, using a compaction device (1) comprising at least one mould (3) which is intended to receive the products (2) and a vibration generator (5) which can transmit vibrations to the products (2). The inventive method consists in tamping the products (2) contained in the mould (3) by subjecting same to vibrations. According to the invention, the frequency of the vibrations is determined such as to ensure optimum tamping as a function of the energy consumed by the vibration generator (5) during a vibration tamping phase.

Description

t t
TiTRE : Procédé de compaction de produits et dispositif pour la mise en œuvre du procédé.TiTRE: Compaction method of products and device for implementing the method.
L'invention concerne un procédé de compaction de produits ainsi qu'un dispositif pour la mise en œuvre du procédé. Dans le domaine des dispositifs de compaction, tels que notamment celui des vibrotasseuses, on connaît notamment des machines pour former des blocs anodiques moulés par compression et tassement vibratoire de la pâte qui les constitue.The invention relates to a product compaction method and a device for implementing the method. In the field of compaction devices, such as in particular that of vibrotasseuses, machines are known in particular to form anodic blocks molded by compression and vibratory settlement of the paste which constitutes them.
La pâte est déversée dans un moule reposant sur une table vibrante. Le moule est fermé en sa partie supérieure par une masse pressante qui repose sur la pâte. La table vibrante repose sur le sol par l'intermédiaire d'éléments élastiques. Les vibrations verticales sont générées par deux systèmes à arbres à balourds en rotation synchrone et en opposition de phase à une vitesse fixe tout au long de la période de vibrotassage. Les arbres à balourds sont entraînés en rotation par un moteur électrique alimenté par un variateur de fréquences.The dough is poured into a mold resting on a vibrating table. The mold is closed at its upper part by an pressing mass which rests on the dough. The vibrating table rests on the ground via elastic elements. The vertical vibrations are generated by two systems with synchronous rotation unbalanced trees and in phase opposition at a fixed speed throughout the period of vibrotassage. The unbalanced shafts are rotated by an electric motor powered by a frequency converter.
Le tassage de la pâte amène une variation de l'élasticité de la pâte et par là même une variation dans le comportement vibratoire de la masse pressante et de celui de l'ensemble de la machine. La densité apparente est l'un des critères qui définit la qualité d'une anode. Il est connu que pour une configuration donnée de la machine et pour une qualité donnée de la pâte correspond une vitesse de rotation des arbres à balourds qui donnent les meilleurs résultats en terme de densité apparente des anodes produites. Pour la plupart des machines, la vitesse de rotation des arbres à balourds est déterminée de façon intuitive ou par une analyse a posteriori des anodes produites suivant un plan d'expérience. Compte tenu des variations de qualité de la pâte, cette vitesse n'est en pratique pas optimisée.The packing of the dough brings about a variation in the elasticity of the dough and thus a variation in the vibratory behavior of the pressing mass and that of the whole machine. Apparent density is one of the criteria that defines the quality of an anode. It is known that for a given configuration of the machine and for a given quality of the dough corresponds a rotational speed of the unbalanced shafts which give the best results in terms of apparent density of the produced anodes. For most machines, the rotational speed of unbalanced shafts is determined intuitively or by a posteriori analysis of the anodes produced according to an experimental design. Given the variations in the quality of the dough, this speed is in practice not optimized.
La présente invention a pour but de remédier à ces inconvénients en proposant un procédé de compaction de produits par vibrotassage, dont la fréquence des vibrations transmises aux produits est régulée de telle façon à obtenir un tassage optimum des produits.The object of the present invention is to remedy these drawbacks by proposing a method of compaction of products by vibrotassage, the frequency of which of the vibrations transmitted to the products is regulated in such a way as to obtain optimum packing of the products.
Un autre but de l'invention est de proposer un dispositif pour la mise en œuvre du procédé.Another object of the invention is to propose a device for implementing the method.
D'autres buts et avantages de l'invention apparaîtront au cours de la description qui va suivre, qui n'est donnée qu'à titre indicatif, et qui n'a pas pour but de la limiter.Other aims and advantages of the invention will become apparent from the description which follows, which is given for information only, and which is not intended to limit it.
L'invention concerne tout d'abord un procédé de compaction de produits, tels que notamment une pâte pour la formation d'anodes, par l'intermédiaire d'un dispositif de compaction présentant au moins un moule, destiné à recevoir les produits, et un générateur de vibrations apte à transmettre les vibrations aux produits, procédé dans lequel on tasse les produits contenus dans le moule en les soumettant à des vibrations, caractérisé en ce qu'on détermine la fréquence des vibrations assurant un tassage optimum en fonction de l'énergie consommée par le générateur de vibrations pendant une phase de vibrotassage.The invention firstly relates to a product compaction method, such as in particular a paste for the formation of anodes, via a compaction device having at least one mold, intended to receive the products, and a vibration generator adapted to transmit the vibrations to the products, wherein the products contained in the mold are subjected to vibration by vibrating them, characterized in that the frequency of the vibrations is determined so as to ensure optimum packing according to the energy consumed by the vibration generator during a vibrotassage phase.
L'invention concerne également un dispositif de compaction pour la mise en œuvre du procédé de compaction, dispositif comprenant au moins un moule, destiné à recevoir des produits, et un générateur de vibrations à balourds, équipé de moyens moteurs, ledit générateur étant apte à transmettre les vibrations aux produits, caractérisé en ce que le dispositif présente des moyens de mesure de l'énergie consommée par le générateur de vibrations ainsi qu'une unité logique de traitement pour la commande de la vitesse des balourds, l'unité logique de traitement comportant des moyens de lecture de l'énergie consommée mesurée. L'invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins en annexe parmi lesquels :The invention also relates to a compaction device for implementing the compaction method, device comprising at least one mold, intended to receive products, and an unbalanced vibration generator, equipped with motor means, said generator being adapted to transmitting the vibrations to the products, characterized in that the device has means for measuring the energy consumed by the vibration generator and a logic processing unit for controlling the speed of unbalance, the logic unit of treatment having means for reading the measured consumed energy. The invention will be better understood on reading the following description accompanied by the appended drawings among which:
- la figure 1 est une vue schématique d'un dispositif mis en œuvre dans le procédé de compaction conforme à l'invention,FIG. 1 is a schematic view of a device used in the compaction process according to the invention,
- la figure 2 est un graphique représentant, pour trois configurations de vibrotasseuses différentes, la densité apparente des produits obtenus en fonction de la vitesse de rotation des arbres à balourds, - la figure 3 est un diagramme illustrant le fonctionnement par itération d'un procédé de compaction de produits conformes à l'invention selon un mode de réalisation.FIG. 2 is a graph representing, for three different configurations of vibrators, the apparent density of the products obtained as a function of the rotational speed of the unbalanced shafts; FIG. 3 is a diagram illustrating the operation by iteration of a method of compaction of products according to the invention according to one embodiment.
L'invention concerne un procédé de compaction de produits, notamment de vibrotassage, mettant en œuvre un système de vibrations à arbres à balourds.The invention relates to a method of compaction of products, in particular vibrotassage, implementing a vibration system to unbalance trees.
La figure 2 illustre, avec trois courbes, la densité apparente de produits obtenus par un procédé de vibrotassage, en fonction de la vitesse de rotation des arbres à balourds de dispositifs de compaction. Chaque courbe correspond à une configuration différente du dispositif de compaction ou encore à une qualité de pâtes différentes. On s'aperçoit, quelle que soit la qualité de la pâte utilisée ou encore quel que soit le dispositif de compaction utilisé, que chaque courbe passe par un maximum, c'est-à-dire une densité apparente optimale, qui correspond à une vitesse de rotation des arbres à balourds et donc à une fréquence de vibrations donnée.FIG. 2 illustrates, with three curves, the apparent density of products obtained by a vibrocompaction method, as a function of the speed of rotation of the unbalanced shafts of compaction devices. Each curve corresponds to a different configuration of the compaction device or to a different pasta quality. Whatever the quality of the pulp used or whatever the compaction device used, it can be seen that each curve passes through a maximum, that is to say an optimum apparent density, which corresponds to a speed rotation of unbalanced shafts and therefore at a given vibration frequency.
L'invention est fondée sur le postulat qui établit que la densité apparente, sur un même dispositif de compaction, à partir d'une même qualité de pâte est d'autant meilleure que l'énergie absorbée par les produits pendant Ia phase de vibrotassage est grande. Par conséquent, trouver la fréquence des vibrations qui provoque la plus grande consommation d'énergie pendant la phase de vibrotassage équivaut à trouver la fréquence des vibrations qui donnera la meilleure densité apparente des produits.The invention is based on the assumption that the apparent density, on the same compaction device, from the same quality of dough is all the better that the energy absorbed by the products during the vibrotassage phase is big. Therefore, finding the frequency of vibration that causes the greatest energy consumption during the vibro-massage phase is equivalent to finding the vibration frequency that will give the best apparent density of the products.
L'invention concerne donc tout d'abord un procédé de compaction de produits 2, tels que notamment une pâte pour la formation d'anodes, par l'intermédiaire d'un dispositif de compaction 1, basé sur ces caractéristiques.The invention therefore firstly relates to a method of compaction of products 2, such as in particular a paste for the formation of anodes, by means of a compaction device 1, based on these characteristics.
Le dispositif de compaction présente au moins un moule 3, destiné à recevoir les produits 2 et un générateur de vibrations 5, apte à transmettre les vibrations aux produits 2. Alors on tasse les produits 2 contenus dans le moule 3 en les soumettant à des vibrations. Selon le procédé conforme à l'invention, on détermine la fréquence des vibrations assurant un tassage optimum en fonction de l'énergie consommée par le générateur de vibrations 5 pendant une phase de vibrotassage. On entend par phase de vibrotassage une base de temps inférieure à la durée nécessaire pour assurer l'état de compression final des produits.The compaction device has at least one mold 3, intended to receive the products 2 and a vibration generator 5, capable of transmitting the vibrations to the products 2. Then the products 2 contained in the mold 3 are subjected to vibration by subjecting them to vibration . According to the process according to the invention, the frequency of the vibrations ensuring optimum tamping is determined according to the energy consumed by the vibration generator 5 during a vibrocompaction phase. By vibrotassage phase is meant a time base shorter than the time necessary to ensure the final compression state of the products.
Le procédé conforme à l'invention permet de rechercher et d'ajuster en permanence la fréquence de vibrations pour assurer le tassage optimum des produits tout au long du process de compaction.The method according to the invention makes it possible to constantly search for and adjust the frequency of vibrations to ensure optimum packing of the products throughout the compaction process.
Tel qu'illustré à la figure 1 , on peut prévoir un dispositif de compaction 1 équiper notamment en outre d'une forme pressante 4, apte à compresser les produits 2 contenus dans le moule 3. On tasse alors les produits en les soumettant, en outre, à un effort de compression. Le moule 3 présente une paroi de fond et une paroi latérale.As illustrated in FIG. 1, provision may be made for a compaction device 1 to be equipped, in particular, with a pressing form 4, capable of compressing the products 2 contained in the mold 3. The products are then mulled by subjecting them to besides, to a compressive effort. The mold 3 has a bottom wall and a side wall.
Le générateur de vibrations 5, notamment à balourds, peut se présenter sous la forme d'une table vibrante 8. La table vibrante 8 comporte une pluralité d'arbres à balourds entraînés par des moyens moteurs, notamment électriques. Les vibrations verticales, selon une variante, sont générées par deux arbres à balourds, en rotation synchrone et en opposition de phase.The vibration generator 5, especially unbalanced, can be in the form of a vibrating table 8. The vibrating table 8 comprises a plurality of unbalanced shafts driven by motor means, including electrical. The vertical vibrations, according to a variant, are generated by two unbalanced shafts, in synchronous rotation and in phase opposition.
La table vibrante 8 repose sur le sol par l'intermédiaire d'éléments élastiques 7, notamment gonflables.The vibrating table 8 rests on the ground via elastic elements 7, in particular inflatable.
Selon un mode de réalisation, on détermine la fréquence des vibrations assurant un tassage optimum par itération, et on mesure, pour chaque itération, l'énergie consommée par le générateur de vibrations 5 pendant une phase de vibrotassage et pour une fréquence de vibrations fixe.According to one embodiment, the frequency of the vibrations ensuring optimum tamping by iteration is determined, and for each iteration, the energy consumed by the vibration generator 5 during a vibrotassage phase and for a fixed vibration frequency is measured.
On peut commander alors le générateur de vibrations de telle façon que l'énergie consommée pendant une phase de vibrotassage soit maximale. Selon une variante, l'énergie consommée pendant une phase de vibrotassage, à une fréquence fixe donnée, peut correspondre à l'énergie totale, notamment électrique, consommée par le générateur de vibrations 5 à une fréquence fixe donnée, retranchée de l'énergie consommée par le générateur de vibrations 5 à ladite fréquence fixe donnée, lorsque le dispositif de compaction 1 fonctionne à vide, c'est-à-dire sans produit dans le moule 3. Les mesures de l'énergie consommée par le générateur 5 lorsque le dispositif fonctionne à vide pourront être réalisées préalablement, notamment lors d'une phase d'initialisation du dispositif et par exemple lors de la première mise en route. Les mesures pourront être stockées dans une mémoire d'une unité logique de traitement permettant de contrôler le générateur de vibrations 5.The vibration generator can be controlled in such a way that the energy consumed during a vibrocompaction phase is maximum. According to one variant, the energy consumed during a vibrotassage phase, at a given fixed frequency, may correspond to the energy total, especially electrical, consumed by the vibration generator 5 at a given fixed frequency, removed from the energy consumed by the vibration generator 5 at said given fixed frequency, when the compaction device 1 runs empty, that is, that is to say without product in the mold 3. The measurements of the energy consumed by the generator 5 when the device runs empty may be carried out beforehand, in particular during an initialization phase of the device and for example during the first getting started. The measurements can be stored in a memory of a logic processing unit for controlling the vibration generator 5.
Selon le mode de réalisation illustré à la figure 1, le générateur de vibrations 5 est muni de balourds entraînés en rotation par des moyens moteurs. Selon ce mode de réalisation, on peut alors commander la vitesse de rotation des balourds 6 de telle façon à assurer un tassage optimum des produits.According to the embodiment illustrated in Figure 1, the vibration generator 5 is provided with imbalances driven in rotation by motor means. According to this embodiment, it is then possible to control the speed of rotation of the imbalances 6 so as to ensure optimum packing of the products.
Avantageusement, tel qu'illustré sur le diagramme à la figure 3, on mesure 40, 70 cycliquement, pour chaque itération, l'énergie consommée par le générateur de vibrations 5 pour une fréquence de vibrations fixe, sur une période Pn de mesure déterminée, ladite période de mesure étant sensiblement supérieure à la période des vibrations.Advantageously, as illustrated in the diagram in FIG. 3, the energy consumed by the vibration generator 5 for a fixed vibration frequency, over a given measurement period Pn, is measured cyclically 40, 70 for each iteration. said measuring period being substantially greater than the period of the vibrations.
Selon un mode de réalisation, on procède par itérations successives et pour chaque itération :According to one embodiment, one proceeds by successive iterations and for each iteration:
- on modifie 60 la fréquence des vibrations d'un incrément, positif ou négatif, - on mesure 70 l'énergie consommée par le générateur de vibrations sur une période Pn de mesures déterminées,the frequency of the vibrations of a positive or negative increment is modified, the energy consumed by the vibration generator is measured over a period Pn of determined measurements,
- on compare 80 l'énergie mesurée Eb sur la période Pn de mesure et l'énergie mesurée Ea sur la période Pn - 1 de mesure précédente, et dans le cas d'une baisse d'énergie mesurée Ea > Eb, - on inverse 90 le signe de l'incrément.the measured energy Eb is compared with the measurement period Pn and the measured energy Ea over the period Pn-1 of the preceding measurement, and in the case of a measured energy drop Ea> Eb, 90 the sign of the increment.
Dans le cas d'un dispositif à balourds, on peut modifier la fréquence des vibrations en modifiant la consigne du moteur d'excitation Spv d'un incrément Iv, notamment de valeur absolue fixe. La valeur de l'incrément Iv peut être ajustée expérimentalement entre 1 tour/min et 5 tours/min.In the case of an unbalanced device, the frequency of the vibrations by modifying the setpoint of the excitation motor Spv by an increment Iv, in particular of fixed absolute value. The value of the increment Iv can be adjusted experimentally between 1 rpm and 5 rpm.
La période de mesure Pn doit être significative en regard de la période de vibrations, notamment de la masse pressante et de la période d'excitation. Selon une variante, la période Pn de mesure est de l'ordre de 0,2 à 0,5 sec.The measurement period Pn must be significant with respect to the vibration period, in particular the pressing mass and the excitation period. According to one variant, the measurement period Pn is of the order of 0.2 to 0.5 sec.
L'incrément, notamment de fréquence ou de vitesse Iv, peut être variable, déterminé en corrélation avec la valeur absolue de la différence d'énergie consommée Eb - Ea par le générateur de vibrations pour deux périodes Pn - 1 , Pn de mesures successives.The increment, in particular frequency or speed Iv, may be variable, determined in correlation with the absolute value of the difference in energy consumed Eb - Ea by the vibration generator for two periods Pn - 1, Pn of successive measurements.
Avantageusement, on peut effectuer la première mesure d'énergie 40 après l'établissement d'une fréquence de vibrations minimales déterminée, notamment d'une vitesse minimale de rotation des arbres à balourds. L'établissement d'une fréquence de vibrations minimale déterminée peut être obtenu au moyen d'une temporisation 30 permettant notamment l'établissement d'un régime moteur minimal.Advantageously, it is possible to perform the first energy measurement 40 after the establishment of a determined minimum vibration frequency, in particular a minimum rotational speed of the unbalanced shafts. The establishment of a determined minimum vibration frequency can be obtained by means of a time delay 30 allowing in particular the establishment of a minimum engine speed.
Par ailleurs, le générateur de vibrations 5 peut être commandé entre une fréquence de vibrations minimale et une fréquence de vibrations maximale, et notamment dans le cas d'un dispositif à balourds entre une vitesse limite inférieure et une vitesse limite supérieure de rotation des balourds.Furthermore, the vibration generator 5 can be controlled between a minimum vibration frequency and a maximum vibration frequency, and in particular in the case of an unbalance device between a lower limit speed and an upper limit speed of unbalance rotation.
Dans le cas d'un générateur de vibrations 5 à balourds, ce dernier peut être équipé d'un moteur électrique commandé par un variateur de fréquences. Selon le procédé, on mesure l'énergie consommée par le générateur de vibrations 5 par intégration de la mesure de puissance instantanée fournie par le variateur de fréquences.In the case of an unbalanced vibration generator 5, the latter can be equipped with an electric motor controlled by a frequency converter. According to the method, the energy consumed by the vibration generator 5 is measured by integrating the instantaneous power measurement supplied by the frequency converter.
L'invention concerne également un dispositif de compaction pour la mise en œuvre du procédé de compaction. Le dispositif de compaction 1 présente au moins un moule 3 destiné à recevoir des produits 2 et un générateur de vibrations 5 apte à transmettre les vibrations aux produits. Selon l'invention, le dispositif présente des moyens de mesure de l'énergie consommée par le générateur de vibrations 5 ainsi qu'une unité logique de traitement pour la commande de la fréquence de vibrations dudit générateur de vibrations 5, l'unité logique de traitement comportant des moyens de lecture de l'énergie consommée mesurée.The invention also relates to a compaction device for implementing the compaction process. The compaction device 1 has at least one mold 3 for receiving products 2 and a vibration generator 5 capable of transmitting the vibrations to the products. According to the invention, the device has means for measuring the energy consumed by the vibration generator 5 as well as a logic processing unit for controlling the vibration frequency of said vibration generator 5, the logic unit of FIG. treatment comprising means for reading the measured consumed energy.
Selon une variante, le dispositif de compaction présente en outre une forme pressante 4 apte à compresser les produits 2 contenus dans le moule 3.According to one variant, the compaction device also has an urgent form 4 capable of compressing the products 2 contained in the mold 3.
Le générateur de vibrations 5 peut être un générateur de vibrations à balourds 6 équipés de moyens moteurs. L'unité logique de traitement permet alors la commande de la vitesse des balourds.The vibration generator 5 may be an unbalanced vibration generator 6 equipped with motor means. The logic processing unit then allows the control of the unbalance speed.
Naturellement, d'autres modes de réalisation, à la portée de l'homme de l'art, auraient pu être envisagés sans pour autant sortir du cadre de la présente, telle que définie par les revendications ci-après. Naturally, other embodiments, within the reach of those skilled in the art, could have been envisaged without departing from the scope of the present, as defined by the claims below.

Claims

REVENDICATIONS
1. Procédé de compaction de produits (2), tels que notamment une pâte pour la formation d'anode, par l'intermédiaire d'un dispositif de compaction (1) présentant au moins un moule (3), destiné à recevoir les produits (2), et un générateur de vibrations (5) apte à transmettre les vibrations aux produits (2), procédé dans lequel on tasse les produits (2) contenus dans le moule (3) en les soumettant à des vibrations, caractérisé en ce qu'on détermine la fréquence des vibrations assurant un tassage optimum en fonction de l'énergie consommée par le générateur de vibrations (5) pendant une phase de vibrotassage.1. Method of compaction of products (2), such as in particular a paste for the formation of anode, via a compaction device (1) having at least one mold (3), intended to receive the products (2), and a vibration generator (5) adapted to transmit the vibrations to the products (2), wherein the products (2) contained in the mold (3) are subjected to vibration by vibrating them, characterized in that the frequency of the vibrations is determined to ensure optimum tamping as a function of the energy consumed by the vibration generator (5) during a vibrocompaction phase.
2. Procédé selon la revendication 1 , dans lequel on prévoit un dispositif de compaction équipé en outre d'une forme pressante (4) apte à compresser les produits (2) contenus dans le moule (3), et dans lequel on tasse les produits en les soumettant, en outre, à un effort de compression. 2. Method according to claim 1, wherein there is provided a compaction device further equipped with an urgent form (4) capable of compressing the products (2) contained in the mold (3), and in which the products are mugged. by subjecting them, moreover, to a compressive effort.
3. Procédé selon la revendication 1 ou 2, dans lequel on détermine la fréquence des vibrations assurant un tassage optimum par itérations, et on mesure, pour chaque itération, l'énergie consommée par le générateur de vibrations (5) pendant une phase de vibrotassage et pour une fréquence de vibrations fixe. 3. Method according to claim 1 or 2, wherein the vibration frequency is determined to ensure optimum packing by iterations, and for each iteration, the energy consumed by the vibration generator (5) during a vibrocompaction phase is measured. and for a fixed vibration frequency.
4. Procédé selon la revendication 1 à 3, dans lequel on commande le générateur de vibrations (5) de telle façon que l'énergie consommée pendant une phase de vibrotassage soit maximale.4. Method according to claim 1 to 3, wherein the vibration generator (5) is controlled so that the energy consumed during a vibrocompaction phase is maximum.
5. Procédé selon la revendication 1, dans lequel le générateur de vibrations (5) est muni de balourds (6) entraînés en rotation par des moyens moteurs, procédé dans lequel on commande la vitesse de rotation des balourds (6) de telle façon à assurer un tassage optimum des produits.5. Method according to claim 1, wherein the vibration generator (5) is provided with imbalances (6) driven in rotation by motor means, in which method the speed of rotation of the imbalances (6) is controlled so as to ensure optimum packing of the products.
6. Procédé selon la revendication 3, dans lequel on mesure (40, 70) cycliquement, pour chaque itération, l'énergie consommée par le générateur de vibrations (5) pour une fréquence de vibrations fixe, sur une période Pn de mesure déterminée, ladite période de mesure étant sensiblement supérieure à la période des vibrations. 6. The method according to claim 3, wherein the energy consumed by the vibration generator (5) for a fixed vibration frequency over a given measurement period Pn is measured cyclically (40, 70) for each iteration. said measuring period being substantially greater than the period of the vibrations.
7. Procédé selon la revendication 6, dans lequel on procède par itérations successives et pour chaque itération:7. The method of claim 6, wherein it is carried out by successive iterations and for each iteration:
- on modifie (60) la fréquence des vibrations d'un incrément, positif ou négatif, - on mesure (70) l'énergie consommée par le générateur de vibrations sur une période Pn de mesure déterminée,the frequency of the vibrations of a positive or negative increment is modified (60); the energy consumed by the vibration generator over a given measurement period Pn is measured (70),
- on compare (80) l'énergie mesurée (Eb) sur la période Pn de mesure et l'énergie mesurée (Ea) sur la période Pn-1de mesure précédente, et dans le cas d'une baisse d'énergie mesurée (Ea>Eb), - on inverse (90) le signe de l'incrément.the measured energy (Eb) is compared (80) over the measurement period Pn and the measured energy (Ea) over the period Pn-1 of the previous measurement, and in the case of a measured energy drop (Ea). > Eb), - we reverse (90) the sign of the increment.
8. Procédé selon la revendication 7, dans lequel l'incrément est variable, déterminé en corrélation avec la valeur absolue de la différence d'énergie consommée (Eb - Ea) par le générateur de vibrations pour deux périodes (Pn-I 1Pn) de mesures successives. 8. The method of claim 7, wherein the increment is variable, determined in correlation with the absolute value of the energy difference consumed (Eb - Ea) by the vibration generator for two periods (Pn-I 1 Pn). successive measures.
9. Procédé selon la revendication 6, dans lequel on effectue la première mesure d'énergie (40) après l'établissement d'une fréquence de vibrations minimale déterminée.9. The method of claim 6, wherein the first energy measurement (40) is performed after the establishment of a determined minimum vibration frequency.
10. Procédé selon la revendication 5, dans lequel le générateur de vibrations (5) est équipé d'un moteur électrique commandé par un variateur de fréquences, et dans lequel on mesure l'énergie consommée par le générateur de vibrations (5) par intégration de la mesure de puissance instantanée fourni par le variateur de fréquences.The method according to claim 5, wherein the vibration generator (5) is equipped with an electric motor controlled by a frequency converter, and in which the energy consumed by the vibration generator (5) is measured by integration. the instantaneous power measurement provided by the frequency converter.
11. Dispositif de compaction pour la mise en oeuvre du procédé de compaction selon la revendication 1 , comprenant au moins un moule (3), destiné à recevoir des produits (2), et un générateur de vibrations (5) à balourds (6), équipé de moyens moteurs, ledit générateur étant apte à transmettre les vibrations aux produits (2), caractérisé en ce le dispositif présente des moyens de mesure de l'énergie consommée par le générateur de vibrations (5) ainsi qu'une unité logique de traitement pour la commande de la vitesse des balourds (6), l'unité logique de traitement comportant des moyens de lecture de l'énergie consommée mesurée. 11. Compaction device for implementing the compaction method according to claim 1, comprising at least one mold (3) for receiving products (2), and a vibration generator (5) unbalanced (6). , equipped with motor means, said generator being able to transmit the vibrations to the products (2), characterized in that the device has means for measuring the energy consumed by the vibration generator (5) and a logic unit of processing for controlling the unbalance speed (6), the logic processing unit comprising means for reading the measured consumed energy.
PCT/FR2006/001498 2005-06-29 2006-06-28 Product compaction method and device for implementing same WO2007003758A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE06778692T DE06778692T1 (en) 2005-06-29 2006-06-28 PRODUCT COMPACTION METHOD AND DEVICE FOR IMPLEMENTING THEREOF
CA2612993A CA2612993C (en) 2005-06-29 2006-06-28 Product compaction method and device for implementing same
DE602006003662T DE602006003662D1 (en) 2005-06-29 2006-06-28 PRODUCT COMPACTION METHOD AND DEVICE FOR IMPLEMENTING THEREOF
EP06778692A EP1896248B1 (en) 2005-06-29 2006-06-28 Product compaction method and device for implementing same
NO20080513A NO20080513L (en) 2005-06-29 2008-01-28 Method of product compacting and device for embodiment

Applications Claiming Priority (2)

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FR0506656 2005-06-29
FR0506656A FR2887794B1 (en) 2005-06-29 2005-06-29 METHOD FOR COMPACTING PRODUCTS AND DEVICE FOR IMPLEMENTING THE METHOD

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AT (1) ATE413964T1 (en)
CA (1) CA2612993C (en)
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FR2947095B1 (en) * 2009-06-19 2011-07-08 Ferraz Shawmut METHOD FOR MANUFACTURING A FUSE
CN102269315A (en) * 2011-05-10 2011-12-07 江苏德一新型建筑材料科技有限公司 Vibration device

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE4434687A1 (en) * 1993-09-29 1995-03-30 Hubert Bald Method for controlling or regulating a vibratory compaction system for the compaction and moulding of moulding materials in moulding boxes and compaction system for applying the method
DE19611068A1 (en) * 1995-03-25 1996-09-26 Bald Hubert Moulding material vol. control equipment e.g. for moulds in concrete block machine
NL1008725C2 (en) * 1998-03-27 1999-10-01 Mason Europ B V Compaction press for forming concrete blocks, etc.
WO2002038346A1 (en) * 2000-11-11 2002-05-16 GEDIB Ingenieurbüro und Innovationsberatung GmbH Compaction device for compacting moulded bodies from granular substances and a method for using said device
WO2002055238A2 (en) * 2001-01-12 2002-07-18 Gkn Sinter Metals Gmbh Method for producing a sintered component with superimposed oscillations during the pressing process
US20040070099A1 (en) * 2000-11-11 2004-04-15 Hubert Bald Method and device for compressing granular materials

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434687A1 (en) * 1993-09-29 1995-03-30 Hubert Bald Method for controlling or regulating a vibratory compaction system for the compaction and moulding of moulding materials in moulding boxes and compaction system for applying the method
DE19611068A1 (en) * 1995-03-25 1996-09-26 Bald Hubert Moulding material vol. control equipment e.g. for moulds in concrete block machine
NL1008725C2 (en) * 1998-03-27 1999-10-01 Mason Europ B V Compaction press for forming concrete blocks, etc.
WO2002038346A1 (en) * 2000-11-11 2002-05-16 GEDIB Ingenieurbüro und Innovationsberatung GmbH Compaction device for compacting moulded bodies from granular substances and a method for using said device
US20040070099A1 (en) * 2000-11-11 2004-04-15 Hubert Bald Method and device for compressing granular materials
WO2002055238A2 (en) * 2001-01-12 2002-07-18 Gkn Sinter Metals Gmbh Method for producing a sintered component with superimposed oscillations during the pressing process

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CA2612993A1 (en) 2007-01-11
ATE413964T1 (en) 2008-11-15
EP1896248A1 (en) 2008-03-12
CN101223026A (en) 2008-07-16
NO20080513L (en) 2008-03-28
EP1896248B1 (en) 2008-11-12
DE06778692T1 (en) 2008-09-25
FR2887794A1 (en) 2007-01-05
CA2612993C (en) 2011-02-15
FR2887794B1 (en) 2008-08-08
CN100584590C (en) 2010-01-27

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