EP1896248A1 - Procede de compaction de produits et dispositif pour la mise en uvre du procede. - Google Patents
Procede de compaction de produits et dispositif pour la mise en uvre du procede.Info
- Publication number
- EP1896248A1 EP1896248A1 EP06778692A EP06778692A EP1896248A1 EP 1896248 A1 EP1896248 A1 EP 1896248A1 EP 06778692 A EP06778692 A EP 06778692A EP 06778692 A EP06778692 A EP 06778692A EP 1896248 A1 EP1896248 A1 EP 1896248A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- products
- vibration generator
- vibration
- energy
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Container Filling Or Packaging Operations (AREA)
- Processing Of Solid Wastes (AREA)
- Fish Paste Products (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Disintegrating Or Milling (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0506656A FR2887794B1 (fr) | 2005-06-29 | 2005-06-29 | Procede de compaction de produits et dispositif pour la mise en oeuvre du procede |
PCT/FR2006/001498 WO2007003758A1 (fr) | 2005-06-29 | 2006-06-28 | Procede de compaction de produits et dispositif pour la mise en œuvre du procede. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1896248A1 true EP1896248A1 (fr) | 2008-03-12 |
EP1896248B1 EP1896248B1 (fr) | 2008-11-12 |
Family
ID=35822626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06778692A Not-in-force EP1896248B1 (fr) | 2005-06-29 | 2006-06-28 | Procede de compaction de produits et dispositif pour la mise en uvre du procede. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1896248B1 (fr) |
CN (1) | CN100584590C (fr) |
AT (1) | ATE413964T1 (fr) |
CA (1) | CA2612993C (fr) |
DE (2) | DE06778692T1 (fr) |
FR (1) | FR2887794B1 (fr) |
NO (1) | NO20080513L (fr) |
WO (1) | WO2007003758A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2947095B1 (fr) * | 2009-06-19 | 2011-07-08 | Ferraz Shawmut | Procede de fabrication d'un fusible |
CN102269315A (zh) * | 2011-05-10 | 2011-12-07 | 江苏德一新型建筑材料科技有限公司 | 振动装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4434679A1 (de) * | 1993-09-29 | 1995-03-30 | Hubert Bald | Verdichtungssystem zum Formen und Verdichten von Formstoffen zu Formkörpern in Formkästen |
DE19611068A1 (de) * | 1995-03-25 | 1996-09-26 | Bald Hubert | Kontrolleinrichtung zur Kontrolle der Formstoff-Füllmengen an Formkästen von Betonsteinmaschinen |
NL1008725C2 (nl) * | 1998-03-27 | 1999-10-01 | Mason Europ B V | Werkwijze voor het regelen van een verdichtingsinrichting alsmede een dergelijke verdichtingsinrichting. |
EP1332041A1 (fr) * | 2000-11-11 | 2003-08-06 | Gedib Ingenieurbüro Und Innovationsberatung Gmbh | Procede et dispositif de compression de matieres granuleuses |
ATE375237T1 (de) * | 2000-11-11 | 2007-10-15 | Gedib Ingbuero Innovation | Verdichtungseinrichtung zur verdichtung von formkörpern aus kornförmigen stoffen und verfahren zur anwendung der verdichtungseinrichtung |
DE10101471A1 (de) * | 2001-01-12 | 2002-07-25 | Gkn Sinter Metals Gmbh | Verfahren zur Herstellung eines gesinterten Bauteils mit überlagerten Schwingungen während des Preßvorgangs |
-
2005
- 2005-06-29 FR FR0506656A patent/FR2887794B1/fr not_active Expired - Fee Related
-
2006
- 2006-06-28 DE DE06778692T patent/DE06778692T1/de active Pending
- 2006-06-28 AT AT06778692T patent/ATE413964T1/de not_active IP Right Cessation
- 2006-06-28 WO PCT/FR2006/001498 patent/WO2007003758A1/fr not_active Application Discontinuation
- 2006-06-28 CN CN200680023383A patent/CN100584590C/zh not_active Expired - Fee Related
- 2006-06-28 EP EP06778692A patent/EP1896248B1/fr not_active Not-in-force
- 2006-06-28 DE DE602006003662T patent/DE602006003662D1/de active Active
- 2006-06-28 CA CA2612993A patent/CA2612993C/fr not_active Expired - Fee Related
-
2008
- 2008-01-28 NO NO20080513A patent/NO20080513L/no not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2007003758A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2887794A1 (fr) | 2007-01-05 |
CN100584590C (zh) | 2010-01-27 |
DE602006003662D1 (de) | 2008-12-24 |
CA2612993A1 (fr) | 2007-01-11 |
ATE413964T1 (de) | 2008-11-15 |
NO20080513L (no) | 2008-03-28 |
DE06778692T1 (de) | 2008-09-25 |
FR2887794B1 (fr) | 2008-08-08 |
WO2007003758A1 (fr) | 2007-01-11 |
CN101223026A (zh) | 2008-07-16 |
EP1896248B1 (fr) | 2008-11-12 |
CA2612993C (fr) | 2011-02-15 |
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