EP0277452A1 - Method for making moulded articles and moulding apparatus for performing the method - Google Patents

Method for making moulded articles and moulding apparatus for performing the method Download PDF

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Publication number
EP0277452A1
EP0277452A1 EP87440088A EP87440088A EP0277452A1 EP 0277452 A1 EP0277452 A1 EP 0277452A1 EP 87440088 A EP87440088 A EP 87440088A EP 87440088 A EP87440088 A EP 87440088A EP 0277452 A1 EP0277452 A1 EP 0277452A1
Authority
EP
European Patent Office
Prior art keywords
mold
products
pestle
molding
handling
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.)
Withdrawn
Application number
EP87440088A
Other languages
German (de)
French (fr)
Inventor
Jacques Vasseur
Gérard Bertrand
Jean-Marie Demoulin
Paul-Eric Dujardin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKAKO PIERRE ET BERTRAND SA
Original Assignee
SKAKO PIERRE ET BERTRAND SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8701171A external-priority patent/FR2609928A1/en
Priority claimed from FR8710414A external-priority patent/FR2618094A1/en
Application filed by SKAKO PIERRE ET BERTRAND SA filed Critical SKAKO PIERRE ET BERTRAND SA
Publication of EP0277452A1 publication Critical patent/EP0277452A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting

Definitions

  • the invention relates to a process for manufacturing molded products as well as to a molding installation authorizing in particular the implementation of said process.
  • the invention will particularly find its application in the construction and building sector for manufacturing construction products of cement-based forms such as blocks, commonly called concrete blocks or the like.
  • the invention can be applied to other fields where we find the same molding problems.
  • Different transfers between the stations are also carried out automatically, in particular by means of handling ferries or all other transport systems adapted to the products and the location of the different work stations.
  • a known type of molding installation consists essentially of a hopper for supplying moldable materials, one or more molds, the shape of the products to be produced, a movable dispensing drawer which allows, by a back and forth movement, to feed the mold from the material contained in the feed hopper, a compaction pestle as well as a vibrator which make it possible to give the molded products a significant compactness in order to increase their mechanical resistance.
  • the wooden board constitutes, on the one hand, the bottom of the mold and, on the other hand, will be used after demolding for handling fresh products.
  • the mold is filled with moldable material for the intermediary of the feed hopper and of the dispensing drawer, then vibrations are caused by the vibrator in order to make the moldable material penetrate into the mold, finally it is compacted by means of the compression pin and by vibration.
  • demolding is carried out according to known techniques by raising the mold, the fresh molded product then remaining on the handling wooden board.
  • the cost of the boards is important not only at the time of investment of the machine but also during service, the boards are generally considered as consumable materials.
  • Wood is a relatively soft material, and due to the moldable material, vibrations, and pressures exerted on the boards at the time of molding, these have a limited lifespan and must be replaced frequently periodically to always obtain a good quality product.
  • the handling wooden board serves as the mold base, it is important that it has good flatness. In addition, since the molded products are heavy, it is also important that it resists during handling to avoid loss of product.
  • the object of the present invention is to provide a method and an installation for manufacturing molded products, in particular intended for construction, the products being for example made from cement, such as concrete blocks or other similar shaped products, which use as handling plates, in particular traditional wooden boards, but which, thanks to the specific steps of the present invention, make it possible to prevent premature wear of said boards while giving better results in terms of the quality of the molded product.
  • One of the aims of the present invention is to propose a process for manufacturing molded products in which the molding is not carried out, as traditionally, on the wooden board, which in particular allows on the one hand to have better vibration during compaction, because the damping effect of the wooden board is removed, and on the other hand to have a better longevity of the boards, because they no longer support the compaction or vibration forces during molding.
  • One of the aims of the present invention is to propose a process for the production of molded products in which the handling plates have only a role as a plan for laying fresh molded products usable only during the handling of the products to transport them to the 'drying and storage area.
  • the plates suffering mechanically much less, there will be a better presentation of the stacking and the recovery by mechanical and automatic devices during handling will be facilitated.
  • Another object of the present invention is to propose a process for manufacturing molded products which allows the production of a product with a better finish at the level of their laying plan, this advantageously having an impact on the subsequent handling of dry products: better presentation products during stacking, possible shifting of products on their laying plan.
  • Another object of the present invention is to provide a molding installation, in particular authorizing the implementation of the process for manufacturing molded products, in particular of cement-based construction, such as concrete blocks or other similar shaped products, according to the present. invention, whose operating cost is significantly reduced due to the better longevity of the handling plates.
  • Another object of the present invention is to provide a molding installation which makes it possible to obtain molded products, in particular of cement-based construction, which has a better finish and increased mechanical strength.
  • Another object of the present invention is to propose a molding installation which makes it possible to make substantial gains in moldable material on the one hand by a better molding technique and on the other hand by avoiding the production of non-conforming molded products and by eliminating the losses by breakage at the time of their handling.
  • Another object of the present invention is to provide a molding installation which can on the one hand be supplied with handling plates, for example from the front, and on the other hand which allows the evacuation of the products molded on the said plate by the same side, that is to say also from the front.
  • the method of manufacturing molded products, in particular of cement-based construction, such as blocks commonly called parapaings or other similar shaped products, in particular implemented in a plant for pressing such products comprising at least : - A molding device having at least one mold whose lower face is open and a table for receiving the mold. - a set of molded product handling plates, said process is characterized by the fact that: - the mold is placed on the receiving table so that it is in direct contact with the underside of the mold, - the product (s) to be obtained are molded, - a handling plate is substituted for said receiving table, after molding under the underside of the mold, - The product (s) thus obtained are removed from the mold on said plate.
  • the molding installation in particular authorizing the implementation of the process for manufacturing molded products according to the present invention, comprising at least: - a device for supplying moldable material, lower is open and a compression pestle cooperating with said mold, - a vibration device having a vibrating vibration table, is characterized by the fact that said vibration table substantially constitutes the mold receiving table and the bottom wall of the mold.
  • the present invention relates to a device for manufacturing molded products and a molding installation allowing the implementation of said method.
  • the invention will in particular allow the molding of cement-based construction products, such as concrete blocks or other similar shaped products. Nevertheless, one could consider using the present invention on the one hand in other fields where molding poses similar problems and / or on the other hand with other moldable materials than cement.
  • Figure 1 schematically shows the top view of a complete installation for manufacturing molded products.
  • the example shown applies in particular to concrete blocks.
  • the present invention relates essentially to the actual molding station which fits perfectly into installations of known type.
  • FIG. 1 shows the different work stations, namely, in 1: the actual molding installation, in 2; the product storage and drying area, in 3: a palletizing facility for dried molded products.
  • a floor ferry 4 which in particular allows the fresh molded products to be taken out of the molding station 1 and then places them on the drying air 2.
  • This ferry allows also when the products are dry, take them back from this storage area to direct them towards the palletizing machine 3.
  • a handling system 5 which in particular allows the fresh products which have just been molded to be conveyed, is completed by an elevator device 6, which makes it possible to place the different products in a column according to a technique known to those skilled in the art.
  • the palletizing device 3 is connected to the transporter 4 by a conveyor 7, terminated by a descending device 8, the operation of which is similar to the above-mentioned device 6 but reverse.
  • the pallets are removed from the device 3 by a conveyor 9 constructed using techniques known to those skilled in the art.
  • This conveyor 9 therefore sends the pallets formed with the dried molded products for storage and dispatch thereof.
  • a recovery system 10 is also provided for handling plates, which, let us recall, are used to authorize the handling of fresh products from item 1 to the palletizing item 3, via the drying area 2.
  • This station provided according to techniques known to those skilled in the art, makes it possible in particular to clean the handling plates, then to turn them over and place them in a waiting store 11 from which they will then be removed for the needs from the molding installation 1 and directed towards them via the conveyor 12.
  • Said general installation as illustrated in FIG. 1 in particular allows the following cycle to take place: - molding of fresh products in the molding installation 1, handling of fresh products 13 on a handling plate 14 via the conveyor 5 to the lift device 6, - recovery of this elevator 6 when it is completely filled by the transporter 4 and storage of the said products in the different spans of the storage area 2, - recovery of the products when they are dry in the storage area 2 by the transporter 4, formation of pallets of dried molded products, the boards 14 on which the dry products 15 are then placed are taken up one by one by means of the elevator 8 and directed by the conveyor 7 to the palletizing device 3, - evacuation of the pallets formed by the conveyor 9, - recovery of the boards 14 at the level of the device 10 and put on hold in the store 11 for a future use; these are then recycled via the conveyor 12.
  • FIGS 2 and 3 schematically show a first embodiment of an installation 1 for molding products, in particular of cement-based construction such as concrete blocks, which comprises at least one molding device 17, a vibration device 18, a set 19 of handling plates 14 for molded products.
  • the latter includes a feed hopper 21 and a distribution slide 22 which will allow the mouldable material to be brought to the molding device 17.
  • the molding device 17 has at least one hollow mold 23 whose internal volume corresponds to the products to be molded.
  • the mold can allow the realization of one or more produced simultaneously according to the dimensions of the latter.
  • the mold 23 consists of the closed side walls and has an upper face 24 and a lower face 25 open.
  • the molding device 17 will also have a compression pestle 26.
  • the latter will be able to move vertically according to the arrows 30 so that it can penetrate into the mold 23 through its upper face 24 and slide in the mold to compact the moldable material.
  • the vibration device 18 has at least one vibration table 27 actuated by any means of known vibrating systems such as knockers, motorized mechanical vibrators.
  • the vibration table 27 will have a surface adapted to the open underside 25 of the mold 23. In fact, this will constitute substantially the mold receiving table as well as the bottom wall of the mold, in other words the bottom of the mold. . In the case of concrete block molding, the table 27 will advantageously be flat.
  • the handling plates 14 of the molded products will be placed on the assembly 19 which will be provided in such a way that during the process, the plates 14 can be placed one by one on the upper face of the vibration and reception table 27.
  • Such devices are known to those skilled in the art.
  • the supply of moldable material it will be kneaded beforehand and then contained in the supply hopper 21, the lower face of which will have a controlled hatch for letting the material flow as required.
  • the distribution drawer 22 which will be advantageously mounted to slide horizontally on a plate 28 and controlled by a drive member 29 so that the drawer 22 performs a back and forth movement between the hopper 21 and the open face 24 upper part of the mold 23 to supply it with moldable material.
  • a drive member 29 Such devices are also known to those skilled in the art.
  • Such an installation 1 allows in particular the implementation of the process for manufacturing molded products according to the present invention in which the following steps are carried out successively: the mold 23 is placed on the reception table 27 so that it is in direct contact with the underside 25 of the mold 23, - the product (s) to be obtained are molded, such as concrete blocks for example, a handling plate 14 is replaced by the receiving table 27, under the underside 25 of the mold 23, - the product (s) on the said plate 20 are removed from the mold.
  • the molding of said products it is carried out according to traditional phases, namely in particular: by filling the mold 23 with moldable material via the feed hopper 21 and the distribution slide 22, by vibrating the mold 23 to facilitate the introduction of the moldable material into the mold by means of the vibrating table 27, - By compacting the moldable material in the mold 23 by vibration and by the action of the compression pestle 26 by making it penetrate at the upper face 24 of the mold then by exerting a compression pressure of the material.
  • the said products are directly molded in particular on the receiving table 27 of the vibration device 18, the surface of which is adapted to this effect.
  • the mold 23 is raised without causing the molded fresh product or products to be removed from the mold.
  • the mold 23-pestle 26 assembly is raised without causing relative movements of one relative to the other, then placed on the vibrating receiving table. 27 said handling plate 14, finally the mold 23-pestle 26 is lowered onto said plate 14.
  • FIGS 4a to 4d show the different phases of the implementation of this process.
  • FIG. 4a shows, respectively positioned between them, the mold 23 disposed on the vibrating receiving table 27, the lower face 25 of the mold being closed by said table 27, and the compression pestle 26 capable of sliding in the mold 23.
  • the mold 23 has been previously filled with moldable material and the vibrating table is put into action, the vibrations being shown diagrammatically by the broken arrows 27.
  • FIG. 4b shows the action of the compression pestle 26 which descends vertically in the mold 23 to exert a compressive force Fp to compact the moldable material in addition to the vibrations 27.
  • FIG. 4c represents the phase in which the handling plate 14 is interposed between the mold 23 and the vibrating table 27.
  • the action of the vibrating table is stopped in order to be able to position the plate 14 on the surface thereof.
  • the mold 23-pestle 26 assembly is raised without causing the molded fresh product or products which have just been compacted to be removed from the mold.
  • the installation of the invention, and more precisely the molding device 17 has a mold 23 and a compression pestle 26 provided for vertical sliding relative to the vibrating table 27; this sliding is shown diagrammatically in FIG. 4c by the arrows 32.
  • the molding device 17 is such that, when the mold 23 rises during the plate insertion phase, the pestle 26 follows the vertical movements of the mold without causing significant efforts on the products contained in the mold. likely to unmold it.
  • the pestle 26 is mounted on a compensation system of the counterweight type, shown schematically in phantom in Figure 4c, mechanical, hydraulic or electric.
  • this compensation system 23 will make it possible to substantially annihilate the weight of the pestle 26 when the mold is raised or lowered during the insertion phase of the handling plate 14.
  • the compensation system 33 makes it possible to create a differential force.
  • the weight P will be slightly less than the form Fm so that a downward force remains to keep the product and the pestle in contact.
  • a force of the order of 50 to 100 kg would be sufficient to give good results.
  • FIG. 4d illustrates the ascent phase of the mold 23, the blocking of the pestle 26 being shown diagrammatically by the brake shoe marked 34.
  • the pestle 26 is released and then raised to allow handling of the fresh products 13 thus obtained, as specified above.
  • FIGS 5 and 6 schematically show another embodiment of installation 1 for molding products, which also comprises a molding device 17, a vibration device 18, a set of handling plates 14 of the molded product.
  • said vibration table 27 constitutes substantially the mold reception table, and at the end of the molding phase, a handling plate 14 is substituted for said reception table 27.
  • this reception table 27 As regards the said product reception table, we have seen that the upper part 27 of the vibration device 18 was used. In addition, this reception table 27 is mounted on elastic means shown diagrammatically in FIGS. 7 by the pins 35 acting in the opposite direction of the compression force of the pestle 26.
  • the vibrating table is mounted on suspension pads which, once released by the mold 23, raise the whole receiving table, mold, products and pestle. The tables are then transferred without significant effort.
  • Figures 7a to 7e show the different phases successive of the substitution of the receiving table 27 by the handling plate 14, after the compacting phase, to rest the fresh products 13 which have just been molded on said plate 14 and allow their handling traditionally.
  • the reception table 27, substantially constituted by the upper part of the vibration device 18, has means for retracting under the action of the handling plate 14.
  • reception table 27 also has means for guiding horizontal translation.
  • FIG. 7a schematically shows the mold 23, the vibration device 18, the receiving plate 27 and the handling plate 14 respectively positioned with respect to each other during the molding and compacting phase.
  • This substitution is caused by the translation of the handling plate 14 which pushes the receiving table 27 in the opposite direction to disengage it from the vibrating table and interpose the handling plate 14 between the mold and the vibration device 18.
  • the handling plate 14 has a thickness substantially identical to that of the retractable receiving table 27 and a surface sufficient to close the lower open face 25 of the mold 23.
  • Figure 7c shows the release of fresh product 13 on the handling plate 14. During the release phase, the pestle 26 is held in position and there is vertical sliding of the mold 23 relative to the latter.
  • FIG. 7d shows the fresh product 13 removed from the mold, the pestle 26 and the mold raised. From this moment, the plate of handling 14 supporting the fresh product or products 13 can be removed from the machine. For this, the reception table 27 is actuated so that it can return to its initial position above the vibration device 18. It is moved in a reverse movement to that of the substitution phase.
  • FIG. 7e shows the phase of evacuation of the handling plate 14 on the conveyor 5, the return to the initial position of the plate 27 and the return of the mold 23 in direct contact with the latter.
  • Another advantage of the present installation resides in the level of maintenance and troubleshooting of the machine made easier by the fact that the admission of the handling plates and their evacuation with the fresh molded products are done on the same side. of the molding installation.
  • the molding installation 1 comprises a device for feeding the handling plate 14, capable of placing a handling plate 14 under the mold 23 from the front of the installation, then capable of extracting from the front. of the installation, the said handling plate 14 on which the molded products 13 were removed from the mold.
  • the molding, proper, of the products is therefore carried out independently of the traditional handling plates.
  • a better result is obtained and the lifespan of the handling plates is increased, which is why they can advantageously be made of wood without prejudice to their longevity.
  • any other material could also be considered.

Abstract

Its application will be found especially in the field of building and construction for the moulding of cement-based construction products, such as building blocks or other products similar in shape. The apparatus (1) for pressing such products comprises at least: - a device (21, 22) for feeding with a mouldable material, - a moulding device (17) having at least one mould (23) whose lower face (25) is open, and a table (27) for receiving the mould, - a set of moulded-product handling plates (14), - a vibration device (18) whose upper portion forms the table (27) for receiving the mould. According to the method of the invention: - the products are moulded on the reception table (27), - then a handling plate (14) is substituted for the said reception table (27), - finally, the said product or products obtained are demoulded from the said plate (14). <IMAGE>

Description

L'invention est relative à un procédé de fabrication de produits moulés ainsi qu'à une installation de moulage autorisant notamment la mise en oeuvre du dit procédé.The invention relates to a process for manufacturing molded products as well as to a molding installation authorizing in particular the implementation of said process.

L'invention trouvera particulièrement son application dans le domaine de construction et du bâtiment pour fabriquer des produits de construction de formes à base de ciment tels que blocs, communément appelés parpaings ou autres. Toutefois, l'invention pourra s'appliquer à d'autres domaines où l'on retrouve les mêmes problèmes de moulage.The invention will particularly find its application in the construction and building sector for manufacturing construction products of cement-based forms such as blocks, commonly called concrete blocks or the like. However, the invention can be applied to other fields where we find the same molding problems.

De nos jours, la fabrication de tels éléments moulés se mécanise et s'automatise de plus en plus pour accroître la production et diminuer le coût de revient de tels produits. Ainsi, il est connu des installation systématisées qui comprennent notamment un poste de moulage proprement dit qui permet d'obtenir à partir de la matière première des produits moulés frais, un poste de séchage dans lequel sont stockés les produits moulés frais jusqu'à leur prise, et enfin un post dit "de palettisation" dans lequel on reprend les produits moulés séchés pour les regrouper notamment sur des palettes de manutention.Nowadays, the manufacture of such molded elements is becoming more and more mechanized and automated in order to increase production and reduce the cost price of such products. Thus, it is known systematized installations which include in particular a molding station proper which allows to obtain from the raw material of fresh molded products, a drying station in which are stored fresh molded products until their setting , and finally a post called "palletizing" in which the dried molded products are taken up to group them, in particular on handling pallets.

Différents transferts entre les postes sont également réalisés automatiquement notamment par l'intermédiaire de transbordeurs de manutention ou tous autres systèmes de transport adaptés aux produits et à l'implantation des différents postes de travail.Different transfers between the stations are also carried out automatically, in particular by means of handling ferries or all other transport systems adapted to the products and the location of the different work stations.

Le coeur d'une telle installation de fabrication de produits moulés est l'installation de moulage proprement dite. A ce sujet, différents types d'installation sont connus mais ne donnent pas entière satisfaction sur le plan de la fiabilité à long terme de l'installation.The heart of such a molded product manufacturing facility is the actual molding facility. In this regard, different types of installation are known but do not give complete satisfaction in terms of the long-term reliability of the installation.

Un type d'installation connu de moulage est constitué essentiellement par une trémie d'alimentation de matières moulables, un ou plusieurs moules dont la forme aux produits à réaliser, un tiroir mobile de distribution qui permet, par un mouvement d'aller et retour, d'alimenter le moule à partir de la matière contenue dans la trémie d'alimentation, un pilon de compaction ainsi qu'à un vibreur qui permettent de donner aux produits moulés une compacité importante en vue d'augmenter leur résistance mécanique.A known type of molding installation consists essentially of a hopper for supplying moldable materials, one or more molds, the shape of the products to be produced, a movable dispensing drawer which allows, by a back and forth movement, to feed the mold from the material contained in the feed hopper, a compaction pestle as well as a vibrator which make it possible to give the molded products a significant compactness in order to increase their mechanical resistance.

Dans de telles installations, les problèmes sont nombreux et viennent essentiellement du fait : que la matière moulable est très abrasive, de la nécessité de vibrer le produit en cours de moulage, de la manutention des produits frais et de leur séchage.In such installations, the problems are numerous and come essentially from the fact that the moldable material is very abrasive, the need to vibrate the product during molding, the handling of fresh products and their drying.

En ce qui concerne la vibration, les dispositifs et installations connus à ce jour pallient ces inconvénients par différentes réalisations qui donnent de bons résultats malgré la difficulté technique à surmonter.With regard to vibration, the devices and installations known to date overcome these drawbacks by various embodiments which give good results despite the technical difficulty to be overcome.

En ce qui concerne le problème de manutention, dans la majorité des installations de moulage connus, on utilise des planches de bois planes sur lesquelles sont moulés directement les produits.As regards the handling problem, in the majority of known molding installations, flat wooden boards are used on which the products are molded directly.

A cet égard, ces planches sont placées directement sous le moule pendant le moulage. Ensuite, après démoulage, les produits frais sont égalament maintenus sur ces mêmes planches de bois et stockés dans les dites aires de séchage.In this regard, these boards are placed directly under the mold during molding. Then, after demolding, the fresh products are also kept on these same wooden boards and stored in the said drying areas.

En effet, on connait un procédé de fabrication de produits moulés à base de ciment, tels que parpaings, dans lequel, préalablement au moulage, une planche de bois est placeé sur la table du vibreur puis, le moule, dont le fond est ouvert, est placé sur cette planche de bois.In fact, a process is known for manufacturing molded products based on cement, such as concrete blocks, in which, before molding, a wooden board is placed on the vibrator table, then the mold, the bottom of which is open, is placed on this wooden board.

Ainsi, la planche de bois constitue d'une part le fond du moule et d'autre part servira après le démoulage pour la manutention de produits frais.Thus, the wooden board constitutes, on the one hand, the bottom of the mold and, on the other hand, will be used after demolding for handling fresh products.

Les différents éléments pour le moulage étant ainsi positionnés respectivement, on emplit le moule de matière moulable pour l'intermédiaire de la trémie d'alimentation et du tiroir de distribution puis on provoque des vibrations par le vibreur afin de faire pénétrer la matière moulable dans le moule, enfin on compacte celle-ci au moyen du pillon de compression et par vibrations.The different elements for molding being thus positioned respectively, the mold is filled with moldable material for the intermediary of the feed hopper and of the dispensing drawer, then vibrations are caused by the vibrator in order to make the moldable material penetrate into the mold, finally it is compacted by means of the compression pin and by vibration.

Ensuite, on procède au démoulage selon les techniques connues en relevant le moule, le produit moulé frais restant alors sur la planche de bois de manutention.Then, demolding is carried out according to known techniques by raising the mold, the fresh molded product then remaining on the handling wooden board.

De telles installations nécessitent une quantité importante de planches de bois de manutention car celles-ci ne peuvent être libérées, réemployées que lorsque les produits moulés sont parfaitement secs et préhensibles. Il est courant que, dans le coût d'une installation de moulage, les planches de bois représentent environ 10 % du prix de celle-ci étant donné leur nombre important nécessaire. En effet, le séchage requis est généralement d'environ 24 heures et dans des installations à cadences de fabrication élevées, il est courant d'utiliser 3à 4.000 planches.Such installations require a large quantity of handling wooden planks since these can only be released and reused when the molded products are perfectly dry and prehensible. It is common that, in the cost of a molding installation, wooden planks represent about 10% of the price of this given their large number necessary. In fact, the drying required is generally around 24 hours and in installations with high production rates, it is common to use 3 to 4,000 boards.

De plus, le coût des planches est important non pas seulement au moment de l'investissement de la machine mais également en cours de service, les planches étant généralement considérées comme des matières consommables.In addition, the cost of the boards is important not only at the time of investment of the machine but also during service, the boards are generally considered as consumable materials.

En effet, le bois étant un matériau relativement tendre, et du fait de l'abraison de la matière moulable, des vibrations, et des pressions exercées sur les planches au moment du moulage, celles-ci ont une durée de vie limitéé et doivent être remplacés fréquemment périodiquement pourobtenir toujours un produit de bonne qualité.Wood is a relatively soft material, and due to the moldable material, vibrations, and pressures exerted on the boards at the time of molding, these have a limited lifespan and must be replaced frequently periodically to always obtain a good quality product.

Notamment, comme la planche de bois de manutention sert de fond de moule, il est important que celle-ci présente une bonne planéité. De plus, étant donné que les produits moulés sont lourds, il est également important que celle-ci résiste lors des manutentions pour éviter la perte de produit.In particular, as the handling wooden board serves as the mold base, it is important that it has good flatness. In addition, since the molded products are heavy, it is also important that it resists during handling to avoid loss of product.

Pour pallier ces différents inconvénients, il a été pensé d'utiliser des plaques de manutention métalliques qui offraient l'avantage d'être beaucoup plus résistantes. Toutefois, ce projet a été abandoné étant donné le surcoût que cela apportait sur l'installation. En effet, de telles plaques de manutention en acier coûtent environ 3 fois plus chères que les planches de bois, ce qui se récupercute très sensiblement sur le coût de l'investissement.To overcome these various drawbacks, it was thought to use metal handling plates which offered the advantage of being much more resistant. However, this project was abandoned due to the additional cost that this brought on the installation. Indeed, such steel handling plates cost about 3 times more expensive than wooden planks, which is very significantly recovered on the cost of investment.

Le but de la présente invention est de proposer un procédé et une installation de fabrication de produits moulés, notamment destinés à la construction, les produits étant par exemple réalisés à base de ciment, tels que parpaings ou autres produits similaires de forme, qui utilisent comme plaques de manutention, notamment des planches de bois traditionnelles, mais qui, grâce aux étapes spécifiques de la présente invention, permettent de prévenir l'usure prématurée des dites planches tout en donnant de meilleurs résultats au niveau de la qualité du produit moulé.The object of the present invention is to provide a method and an installation for manufacturing molded products, in particular intended for construction, the products being for example made from cement, such as concrete blocks or other similar shaped products, which use as handling plates, in particular traditional wooden boards, but which, thanks to the specific steps of the present invention, make it possible to prevent premature wear of said boards while giving better results in terms of the quality of the molded product.

Un des buts de la présente invention est de proposer un procédé de fabrication de produits moulés dans lequel le moulage n'est pas effectué, comme traditionnellement, sur la planche de bois, ce qui permet notamment d'une part d'avoir une meilleure vibration lors de la compaction, car l'effet amortisseur de la planche de bois est supprimé, et d'autre part d'avoir une meilleure longévite des planches, car celles-ci ne supportent plus les efforts de compaction ni de vibrations lors du moulage.One of the aims of the present invention is to propose a process for manufacturing molded products in which the molding is not carried out, as traditionally, on the wooden board, which in particular allows on the one hand to have better vibration during compaction, because the damping effect of the wooden board is removed, and on the other hand to have a better longevity of the boards, because they no longer support the compaction or vibration forces during molding.

Un des buts de la présente invention est de proposer un procédé de fabrication de produits moulés dans lequel les plaques de manutention n'ont un rôle que de plan de pose de produits frais moulés utilisable uniquement lors de la manutention des produits pour les transporter vers l'aire de séchage et de stockage. De plus, les plaques souffrant mécaniquement beaucoup moins, on aura une meilleure présentation de l'empilage et les reprises par des dispositifs mécaniques et automatiques lors des manutentions seron facilitées.One of the aims of the present invention is to propose a process for the production of molded products in which the handling plates have only a role as a plan for laying fresh molded products usable only during the handling of the products to transport them to the 'drying and storage area. In addition, the plates suffering mechanically much less, there will be a better presentation of the stacking and the recovery by mechanical and automatic devices during handling will be facilitated.

Un autre but de la présente invention est de proposer un procédé de fabrication de produits moulés qui permette la réalisation d'un produit de meilleure finition au niveau de leur plan de pose, ceci se répercutant avantageusement sur la manutention ultérieure des produits secs : meilleure présentation des produits lors de l'empilage, ripage possible des produits sur leur plan de pose.Another object of the present invention is to propose a process for manufacturing molded products which allows the production of a product with a better finish at the level of their laying plan, this advantageously having an impact on the subsequent handling of dry products: better presentation products during stacking, possible shifting of products on their laying plan.

Un autre but de la présente invention est de proposer une installation de moulage, autorisant notamment la mise en oeuvre du procédé de fabrication de produits moulés, notamment de construction à base de ciment, tels que parpaings ou autres produits similaires de forme, selon la présente invention, dont le coût de revient de fonctionnement se trouve sensiblement diminue du fait de la meilleure longévité des plaques de manutention.Another object of the present invention is to provide a molding installation, in particular authorizing the implementation of the process for manufacturing molded products, in particular of cement-based construction, such as concrete blocks or other similar shaped products, according to the present. invention, whose operating cost is significantly reduced due to the better longevity of the handling plates.

Un autre but de la présente invention est de proposer une installation de moulage qui permette d'obtenir des produits moulés, notamment de construction à base de ciment, qui présente une meilleure finition et une résistance mécanique accrue.Another object of the present invention is to provide a molding installation which makes it possible to obtain molded products, in particular of cement-based construction, which has a better finish and increased mechanical strength.

Un autre but de la présente invention est de proposer une installation de moulage qui permette d'effectuer des gains substantiels en matière moulable d'une part par une meilleure technique de moulage et d'autre part en évitant la réalisation de produits moulés non conformes et en supprimant les pertes par casse au moment de leur manutention.Another object of the present invention is to propose a molding installation which makes it possible to make substantial gains in moldable material on the one hand by a better molding technique and on the other hand by avoiding the production of non-conforming molded products and by eliminating the losses by breakage at the time of their handling.

Un autre but de la présente invention est de proposer une installation de moulage qui puisse d'une part être alimentée en plaques de manutention, par exemple par l'avant, et d'autre part qui permette l'évacuation des produits moulés sur la dite plaque par le même côté c'est-à-dire également par l'avant.Another object of the present invention is to provide a molding installation which can on the one hand be supplied with handling plates, for example from the front, and on the other hand which allows the evacuation of the products molded on the said plate by the same side, that is to say also from the front.

Ainsi, on diminuera la complexité de réalisation de l'installation et on permettra également un entretien plus facile de l'installation, l'accès par l'arrière étant alors dégagé.Thus, the complexity of the installation will be reduced and the installation will also be easier to maintain, access from the rear then being cleared.

D'autres buts et avantages de la présente invention apparaitront au cours de la description qui va suivre qui n'est cependant donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will appear during the description which follows which is however given only for information and which is not intended to limit it.

Selon l'invention, le procédé de fabrication de produits moulés, notamment de construction à base de ciment, tels que blocs communément appelés parapaings ou autres produits similaires de forme, notamment mis en oeuvre dans une installation de pressage de tels produits, comportant au moins :
- un dispositif de moulage présentant au moins un moule dont la face inférieure est ouverte et une table de réception du moule.
- un ensemble de plaques de manutention des produits moulés,
le dit procédé est caractérisé par le fait que :
- on dispose le moule sur la table de réception de sorte que celle-ci soit en contact direct avec la face inférieure du moule,
- on moule le ou les produits à obtenir,
- on substitue une plaque de manutention à la dite table de réception, après moulage sous la face inférieure du moule,
- on démoule le ou les produits ainsi obtenu sur la dite plaque.According to the invention, the method of manufacturing molded products, in particular of cement-based construction, such as blocks commonly called parapaings or other similar shaped products, in particular implemented in a plant for pressing such products, comprising at least :
- A molding device having at least one mold whose lower face is open and a table for receiving the mold.
- a set of molded product handling plates,
said process is characterized by the fact that:
- the mold is placed on the receiving table so that it is in direct contact with the underside of the mold,
- the product (s) to be obtained are molded,
- a handling plate is substituted for said receiving table, after molding under the underside of the mold,
- The product (s) thus obtained are removed from the mold on said plate.

L'installation de moulage, autorisant notamment la mise en oeuvre du procédé de fabrication de produits moulés selon la présente invention, comportant au moins :
- un dispositif d'alimentation en matière moulable,
inférieure est ouverte et un pilon de compression coopérant avec le dit moule,
- un dispositif de vibration présentant une table de vibration vibrante,
est caractérisée par le fait que la dite table ce vibration constitue substantiellement la table de réception du moule et la paroi inférieure du moule.The molding installation, in particular authorizing the implementation of the process for manufacturing molded products according to the present invention, comprising at least:
- a device for supplying moldable material,
lower is open and a compression pestle cooperating with said mold,
- a vibration device having a vibrating vibration table,
is characterized by the fact that said vibration table substantially constitutes the mold receiving table and the bottom wall of the mold.

La présente invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins qui en font partie intégrante.

  • La figure 1 montre schématiquement, en exemple, en vue de dessus une installation complète de fabrication de produits moulés, notamment de construction à base de ciment tels que parpaings, qui comporte essentiellement un poste de moulage, un poste de séchage et un poste de palettisation.
  • La figure 2 représente schématiquement en vue de profil un premier mode de réalisation d'une installation de moulage permettant la mise en oeuvre du procédé de fabrication selon l'invention.
  • La figure 3 montre une vue de face de l'installation représentée à la figure 2.
  • Les figures 4a à 4d montrent les différentes phases caractéristiques du procédé de fabrication de produits moulés selon la présente invention dans l'installation des figures 2 et 3.
  • La figure 5 montre une vue schématique de face d'un autre mode de réalisation du poste de moulage de la figure 1.
  • La figure 6 montre une vue de profil du dispositif de moulage tel que représenté à la figure 5.
  • Les figures 7a à 7e montrent successivement les différentes phase caractéristiques du procédé de fabrication de produits moulés selon la présente invention mis en oeuvre dans le poste de moulage tel que notamment représenté aux figures 5 et 6.
The present invention will be better understood on reading the following description accompanied by the drawings which form an integral part thereof.
  • Figure 1 shows schematically, as an example, a top view of a complete installation for manufacturing molded products, in particular of cement-based construction such as concrete blocks, which essentially comprises a molding station, a drying station and a palletizing station .
  • FIG. 2 schematically represents in profile view a first embodiment of a molding installation allowing the implementation of the manufacturing method according to the invention.
  • Figure 3 shows a front view of the installation shown in Figure 2.
  • FIGS. 4a to 4d show the different characteristic phases of the process for manufacturing molded products according to the present invention in the installation of FIGS. 2 and 3.
  • FIG. 5 shows a schematic front view of another embodiment of the molding station of FIG. 1.
  • FIG. 6 shows a profile view of the molding device as shown in FIG. 5.
  • FIGS. 7a to 7e successively show the different characteristic phases of the process for manufacturing molded products according to the present invention implemented in the molding station as shown in particular in FIGS. 5 and 6.

La présente invention concerne un dispositif de fabrication de produits moulés ainsi qu'une installation de moulage permettant la mise en oeuvre du dit procédé.The present invention relates to a device for manufacturing molded products and a molding installation allowing the implementation of said method.

L'invention permettra notamment le moulage de produits de construction à base de ciment, tels que parpaings ou autres produits similaires de forme. Néanmoins, on pourrait envisager d'utiliser la présente invention d'une part dans d'autres domaines où le moulage pose des problèmes similaires et/ou d'autre part avec d'autres matières moulables que le ciment.The invention will in particular allow the molding of cement-based construction products, such as concrete blocks or other similar shaped products. Nevertheless, one could consider using the present invention on the one hand in other fields where molding poses similar problems and / or on the other hand with other moldable materials than cement.

La figure 1 montre schématiquement la vue de dessus d'une installation complète de fabrication de produits moulés. L'exemple représenté s'applique notamment aux parpaings.Figure 1 schematically shows the top view of a complete installation for manufacturing molded products. The example shown applies in particular to concrete blocks.

De telles installations complètes de ce type sont actuellement connues de l'Homme du Métier. La présente invention porte essentiellement sur le poste de moulage proprement dit qui s'intègre parfaitement dans des installations de type connu.Such complete installations of this type are currently known to those skilled in the art. The present invention relates essentially to the actual molding station which fits perfectly into installations of known type.

L'installation générale de la figure 1 montre les différents postes de travail à savoir, en 1: l'installation de moulage proprement dite, en 2; l'aire de stockage des produits et de séchage de ceux-ci, en 3: une installation de palettisation des produits moulés séchés.The general installation of FIG. 1 shows the different work stations, namely, in 1: the actual molding installation, in 2; the product storage and drying area, in 3: a palletizing facility for dried molded products.

Les différents transferts entre les postes 1, 2 et 3 sont effectués par un transbordeur au sol 4 qui permet notamment de prélever les produits moulés frais en sortie du poste de moulage 1 puis de les places sur l'air de séchage 2. Ce transbordeur permet également lorsque les produits sont sec, de les reprendre de cette aire de stockage pour les diriger vers la machine de palettisation 3.The different transfers between stations 1, 2 and 3 are carried out by a floor ferry 4 which in particular allows the fresh molded products to be taken out of the molding station 1 and then places them on the drying air 2. This ferry allows also when the products are dry, take them back from this storage area to direct them towards the palletizing machine 3.

Par ailleurs, entre l'installation de moulage 1 et l'axe du transbordeur 4, un système de manutention 5, qui permet notamment de convoyer les produits frais qui viennent d'être moulés, est terminé par un dispositif ascenseur 6, qui permet de placer les différents produits en une colonne selon une technique connue de l'Homme de l'Art.Furthermore, between the molding installation 1 and the axis of the ferry 4, a handling system 5, which in particular allows the fresh products which have just been molded to be conveyed, is completed by an elevator device 6, which makes it possible to place the different products in a column according to a technique known to those skilled in the art.

De façon indentique, le dispositif de palettissation 3 est relié au transbordeur 4 par un convoyeur 7, terminé par un dispositif descenseur 8 dont le fonctionnement est similaire au dispositif 6 précité mais inverse.Identically, the palletizing device 3 is connected to the transporter 4 by a conveyor 7, terminated by a descending device 8, the operation of which is similar to the above-mentioned device 6 but reverse.

L'évacuation des palettes en sortie du dispositif 3 s'effectue par un convoyeur 9 construit selon des techniques connues de l'Homme du Métier. Ce convoyeur 9 envoie donc les palettes formées avec les produits moulés séchés pour un stockage et une expédition de ceux-ci.The pallets are removed from the device 3 by a conveyor 9 constructed using techniques known to those skilled in the art. This conveyor 9 therefore sends the pallets formed with the dried molded products for storage and dispatch thereof.

Enfin, en sortie du dispositif de palettisation 3 est également prévu un système de récupération 10 des plaques de manutention, qui rappelons-le, sont utilisées pour autoriser la manutention des produits frais du poste 1 jusqu'au poste de palettisation 3, via l'aire de séchage 2.Finally, at the output of the palletizing device 3, a recovery system 10 is also provided for handling plates, which, let us recall, are used to authorize the handling of fresh products from item 1 to the palletizing item 3, via the drying area 2.

Ce poste, prévu selon les techniques connues de l'Homme de l'Art permet notamment de nettoyer les plaques de manutention, puis de les retourner et de les disposer dans un magasin d'attente 11 d'où elles seront ensuite prélevées pour les besoins de l'installation de moulage 1 et dirigées vers celles-ci par l'intermédiaire du convoyeur 12.This station, provided according to techniques known to those skilled in the art, makes it possible in particular to clean the handling plates, then to turn them over and place them in a waiting store 11 from which they will then be removed for the needs from the molding installation 1 and directed towards them via the conveyor 12.

La dite installation générale telle qu'illustrée à la figure 1 permet notamment le déroulement du cycle suivant :
- moulage des produits frais dans l'installation de moulage 1,
- manutention des produits frais 13 sur une plaque de manutention 14 per l'intermédiaire du convoyeur 5 jusqu'au dispositif-ascenseur 6,
- reprise de cet ascenseur 6 lorsqu'il est rempli complètement par le transbordeur 4 et stockage des dits produits dans les différentes través de l'aire de stockage 2,
- reprise des produits lorsqu'ils sont secs dans l'aire de staockage 2 par le transbordeur 4,
- formation de palettes de produits moulés séchés, les planches 14 sur lesquelles sont alors posés les produits secs 15 sont reprises une à une au moyen du descenseur 8 et dirigées par le convoyeur 7 vers le dispositif de palettisation 3,
- évacuation des palettes formées par le convoyeur 9,
- récupération des planches 14 au niveau du dispositif 10 et mise en attente dans le magasin 11 pour une prochaine utilisation; celles-ci étant alors recyclées par l'intermédiaire du convoyeur 12.Said general installation as illustrated in FIG. 1 in particular allows the following cycle to take place:
- molding of fresh products in the molding installation 1,
handling of fresh products 13 on a handling plate 14 via the conveyor 5 to the lift device 6,
- recovery of this elevator 6 when it is completely filled by the transporter 4 and storage of the said products in the different spans of the storage area 2,
- recovery of the products when they are dry in the storage area 2 by the transporter 4,
formation of pallets of dried molded products, the boards 14 on which the dry products 15 are then placed are taken up one by one by means of the elevator 8 and directed by the conveyor 7 to the palletizing device 3,
- evacuation of the pallets formed by the conveyor 9,
- recovery of the boards 14 at the level of the device 10 and put on hold in the store 11 for a future use; these are then recycled via the conveyor 12.

Cela étant, le domaine qui nous préoccupe concerne l'installation de moulage 1 proprement dite et son processus de fonctionnement, c'est pourquoi, nous décrirons celle-ci plus en détail. Le détail des autres postes, étant généralement connus de l'Homme du Métier, sortent du cadre de la présente invention.However, the area which concerns us relates to the molding installation 1 proper and its operating process, this is why, we will describe this one in more detail. The details of the other positions, being generally known to those skilled in the art, are outside the scope of the present invention.

Les figures 2 et 3 montrent schématiquement un premier mode de réalisation d'une installation 1 de moulage de produits, notamment de construction à base de ciment tels que parpaings, qui comporte au moins un dispositif de moulage 17, un dispositif de vibration 18, un ensemble 19 de plaques de manutention 14 des produits moulés.Figures 2 and 3 schematically show a first embodiment of an installation 1 for molding products, in particular of cement-based construction such as concrete blocks, which comprises at least one molding device 17, a vibration device 18, a set 19 of handling plates 14 for molded products.

En outre, pour permettre l'approvisionnement en matière moulée de l'installation 1, celle-ci comporte une trémie d'alimentation 21 et un tiroir de distribution 22 qui permettront d'amener la matière moulable vers le dispositif de moulage 17.In addition, to allow the supply of molded material from installation 1, the latter includes a feed hopper 21 and a distribution slide 22 which will allow the mouldable material to be brought to the molding device 17.

Le dispositif de moulage 17 présente au moins un moule 23 creux dont le volume intérieur correspond aux produits à mouler. A cet égard, le moule peut permettre la réalisation d'un ou plusieurs produits simultanément selon les dimensions de ces derniers.The molding device 17 has at least one hollow mold 23 whose internal volume corresponds to the products to be molded. In this regard, the mold can allow the realization of one or more produced simultaneously according to the dimensions of the latter.

Par ailleurs, le moule 23 est constitué des parois latérales fermées et présente une face supérieure 24 et une face inférieure 25 ouvertes.Furthermore, the mold 23 consists of the closed side walls and has an upper face 24 and a lower face 25 open.

En outre, le dispositif de moulage 17 présentera également un pilon de compression 26. Ce dernier sera apte à se déplacer verticalement selon les flèches 30 afin qu'il puisse pénétrer dans le moule 23 par sa face supérieure 24 et coulisser dans le moule pour compacter la matière moulable.In addition, the molding device 17 will also have a compression pestle 26. The latter will be able to move vertically according to the arrows 30 so that it can penetrate into the mold 23 through its upper face 24 and slide in the mold to compact the moldable material.

En ce qui concerne le dispositif de vibration 18, il présente au moins une table de vibration 27 actionnée par tous moyens de systèmes vibreurs connus tels que frappeurs, vibreurs mécaniques motorisés.As regards the vibration device 18, it has at least one vibration table 27 actuated by any means of known vibrating systems such as knockers, motorized mechanical vibrators.

En outre, la table de vibration 27 présentera une surface adaptée à la face inférieure 25 ouverte du moule 23. En effet, celle-ci constituera substantiellement la table de réception du moule ainsi que la paroi inférieure du moule, autrement dit le fond du moule. Dans le cas de moulage de parpaings, la table 27 sera avantageusement plane.In addition, the vibration table 27 will have a surface adapted to the open underside 25 of the mold 23. In fact, this will constitute substantially the mold receiving table as well as the bottom wall of the mold, in other words the bottom of the mold. . In the case of concrete block molding, the table 27 will advantageously be flat.

Les plaques de manutention 14 des produits moulés seront disposées sur l'ensemble 19 qui sera prévu de telle façon qu'au cours du procédé, on puisse venir placer une à une les plaques 14 sur la face supérieure de la table de vibration et de réception 27. De telles dispositifs sont connues de l'Homme de l'Art.The handling plates 14 of the molded products will be placed on the assembly 19 which will be provided in such a way that during the process, the plates 14 can be placed one by one on the upper face of the vibration and reception table 27. Such devices are known to those skilled in the art.

En ce qui concerne l'alimentation en matière moulable, celle-ci sera préalablement malaxée puis contenue dans la trémie d'alimentation 21, dont la face inférieure présentera une trappe comandée pour laisser couler la matière selon les besoins.As regards the supply of moldable material, it will be kneaded beforehand and then contained in the supply hopper 21, the lower face of which will have a controlled hatch for letting the material flow as required.

Sous cette trappe sera disposé le tiroir de distribution 22 qui sera monté avantageusement à coulissement horizontal sur un plateau 28 et commandé par un organe moteur 29 afin que le tiroir 22 exécute un mouvement d'aller et retour entre la trémie 21 et la face ouverte 24 supérieure du moule 23 pour l'alimenter en matière moulable. De tels dispositifs sont également connus de l'Homme de l'Art.Under this hatch will be arranged the distribution drawer 22 which will be advantageously mounted to slide horizontally on a plate 28 and controlled by a drive member 29 so that the drawer 22 performs a back and forth movement between the hopper 21 and the open face 24 upper part of the mold 23 to supply it with moldable material. Such devices are also known to those skilled in the art.

Une telle installation 1 permet notamment la mise en oeuvre du procédé de fabriction de produits moulés selon la présente invention dans lequel on réalise successivement les étapes suivantes:
- on dispose le moule 23 sur la table de réception 27 de sorte que celle-ci soit en contact direct avec la face inférieure 25 du moule 23,
- on moule le ou les produits à obtenir, tels que parpaings par exemple,
- on substitue une plaque de manutention 14 à la table de réception 27, sous la face inférieure 25 du moule 23,
- on démoule le ou les dits produits sur la dite plaque 20.Such an installation 1 allows in particular the implementation of the process for manufacturing molded products according to the present invention in which the following steps are carried out successively:
the mold 23 is placed on the reception table 27 so that it is in direct contact with the underside 25 of the mold 23,
- the product (s) to be obtained are molded, such as concrete blocks for example,
a handling plate 14 is replaced by the receiving table 27, under the underside 25 of the mold 23,
- the product (s) on the said plate 20 are removed from the mold.

Pour ce qui est du moulage des dits produits, il est réalisé selon des phases traditionnelles à savoir notamment :
- en emplissant le moule 23 de matière moulable par l'intermédiaire de la trémie d'alimentation 21 et du tiroir de distribution 22,
- en vibrant le moule 23 pour faciliter l'introduction de la matière moulable dans le moule par l'intermédiaire de la table vibrante 27,
- en compactant la matière moulable dans le moule 23 par vibrations et par action du pilon de compression 26 en le faisant pénétrer au niveau de la face supérieure 24 du moule puis en exerçant une pression de compression de la matière.As for the molding of said products, it is carried out according to traditional phases, namely in particular:
by filling the mold 23 with moldable material via the feed hopper 21 and the distribution slide 22,
by vibrating the mold 23 to facilitate the introduction of the moldable material into the mold by means of the vibrating table 27,
- By compacting the moldable material in the mold 23 by vibration and by the action of the compression pestle 26 by making it penetrate at the upper face 24 of the mold then by exerting a compression pressure of the material.

Toutefois, à l'inverse des méthodes traditionnelles dans lesquelles la plaque de manutention sert de fond de moule, selon la présente invention, les dits produits sont directement moulés notamment sur la table de réception 27 du dispositif de vibration 18 dont la surface est adaptée à cet effet.However, unlike traditional methods in which the handling plate serves as the mold base, according to the present invention, the said products are directly molded in particular on the receiving table 27 of the vibration device 18, the surface of which is adapted to this effect.

Plus précisément, dans le mode de réalisation des figures 2 à 4, après moulage, vibration et compaction des produits, on vient intercaler une plaque de manutention 14 pour qu'elle se substitue à la table de réception 27. Pour ce, on sépare le moule 23 de la table de réception vibrante 27, le produit moulé frais étant alors encore contenu dans le moule 23.More specifically, in the embodiment of FIGS. 2 to 4, after molding, vibration and compaction of the products, there is inserted a handling plate 14 so that it replaces the reception table 27. For this, the mold 23 of the vibrating receiving table 27, the fresh molded product then still being contained in the mold 23.

Pendant cette phase, on lève le moule 23 sans provoquer le démoulage du ou des produits frais moulés. A cet égard, dans un mode de réalisation intéressant de la présente invention, on relève l'ensemble moule 23-pilon 26 sans provoquer de mouvements relatifs de l'un par rapport à l'autre, puis on place sur la table de réception vibrante 27 la dite plaque de manutention 14, enfin on redescend l'ensemble moule 23-pilon 26 sur la dite plaque 14.During this phase, the mold 23 is raised without causing the molded fresh product or products to be removed from the mold. In this regard, in an interesting embodiment of the present invention, the mold 23-pestle 26 assembly is raised without causing relative movements of one relative to the other, then placed on the vibrating receiving table. 27 said handling plate 14, finally the mold 23-pestle 26 is lowered onto said plate 14.

Les figures 4a à 4d montrent les différentes phases de la mise en oeuvre de ce procédé.Figures 4a to 4d show the different phases of the implementation of this process.

La figure 4a montre, respectivement positionnés entre eux, le moule 23 disposé sur la table de réception vibrante 27, la face inférieure 25 du moule étant obturée par la dite table 27, et le pilon de compression 26 apte à coulisser dans le moule 23.FIG. 4a shows, respectively positioned between them, the mold 23 disposed on the vibrating receiving table 27, the lower face 25 of the mold being closed by said table 27, and the compression pestle 26 capable of sliding in the mold 23.

Dans la première phase illustrée à la figure 4a, le moule 23 a été préalablement rempli de matière moulable et la table vibrante est mise en action, les vibrations étant schématisées par les flèches brisées 27.In the first phase illustrated in FIG. 4a, the mold 23 has been previously filled with moldable material and the vibrating table is put into action, the vibrations being shown diagrammatically by the broken arrows 27.

La figure 4b montre l'action du pilon de compression 26 qui descent verticalement dans le moule 23 pour exercer une force de compression Fp pour compacter la matière moulable en complément des vibrations 27.FIG. 4b shows the action of the compression pestle 26 which descends vertically in the mold 23 to exert a compressive force Fp to compact the moldable material in addition to the vibrations 27.

La figure 4c représente la phase dans laquelle la plaque de manutention 14 est intercalée entre le moule 23 et la table vibrante 27.FIG. 4c represents the phase in which the handling plate 14 is interposed between the mold 23 and the vibrating table 27.

Dans ce cas, l'action de la table vibrante est arrêtée afin de pouvoir positionner la plaque 14 sur la surface de celle-ci. De plus, pour intercaler la plaque de manutention 14, on relève l'ensemble moule 23-pilon 26 sans provoquer de démoulage du ou des produits frais moulés qui viennent d'être compactés.In this case, the action of the vibrating table is stopped in order to be able to position the plate 14 on the surface thereof. In addition, to insert the handling plate 14, the mold 23-pestle 26 assembly is raised without causing the molded fresh product or products which have just been compacted to be removed from the mold.

A ce sujet, étant donné le compactage qui vient d'être effectué, le product frais reste contenu et maintenu dans le moule, et pour le démouler, il faudra une action de l'extérieur pour le chasser du moule, soit un choc, ou soit une pression.In this regard, given the compaction which has just been carried out, the fresh product remains contained and maintained in the mold, and to remove it from the mold, an external action will be necessary to drive it out of the mold, either a shock, or either a pressure.

Par conséquent, pour éviter tout démoulage intempestif, selon la présente invention, on s'assure de relever l'ensemble moule 23-pilon 26 sans provoquer de mouvements relatifs de l'un par rapport à l'autre qui pourraient suffire pour provoquer le démoulage.Consequently, to avoid any untimely demolding, according to the present invention, it is ensured to raise the mold 23-pestle assembly 26 without causing relative movements of one with respect to the other which could be sufficient to cause demolding. .

Néanmoins, pour obtenir un bon état de surface au niveau de la partie supérieure des produits moulés, pendant les mouvements verticaux de l'ensemble moule 23-pilon 26, on maintient en contact le dit pilon 26 avec le produit moulé contenu dans le moule 23.However, to obtain a good surface condition at the top of the molded products, during the vertical movements of the mold 23-pestle 26 assembly, said pestle 26 is kept in contact with the molded product contained in the mold 23 .

Il est à remarquer que, pour permettre cette étape, au cours de laquelle on intercale une plaque de manutention 14 entre le moule 23 et le dessus de la table vibrante 27, l'installation de l'invention, et plus précisément le dispositif de moulage 17, présente un moule 23 et un pilon de compression 26 prévus à coulissement vertical par rapport à la table vibrante 27 ; ce coulissement est schématisé à la figure 4c par les flèches 32.It should be noted that, to allow this step, during which a handling plate 14 is inserted between the mold 23 and the top of the vibrating table 27, the installation of the invention, and more precisely the molding device 17, has a mold 23 and a compression pestle 26 provided for vertical sliding relative to the vibrating table 27; this sliding is shown diagrammatically in FIG. 4c by the arrows 32.

De plus, le dispositif de moulage 17 est tel que, lors de la remontée du moule 23 pendant la phase d'insertion de plaques, le pilon 26 suive les mouvements verticaux du moule sans provoquer d'efforts importants sur les produits contenus dans le moule susceptibles de le ou les démouler.In addition, the molding device 17 is such that, when the mold 23 rises during the plate insertion phase, the pestle 26 follows the vertical movements of the mold without causing significant efforts on the products contained in the mold. likely to unmold it.

Pratiquement, selon l'invention, le pilon 26 est monté sur un système de compensation du type contrepoids, schématisé en trait mixte à la figure 4c, mécanique, hydraulique ou électrique.Practically, according to the invention, the pestle 26 is mounted on a compensation system of the counterweight type, shown schematically in phantom in Figure 4c, mechanical, hydraulic or electric.

ce système de compensation 23 permettra d'annihiler sensiblement le poids du pilon 26 lors de la montée ou de la descente du moule pendant la phase d'insertion de la plaque de manutention 14.this compensation system 23 will make it possible to substantially annihilate the weight of the pestle 26 when the mold is raised or lowered during the insertion phase of the handling plate 14.

Ainsi, dans cette opération, il suffira de remonter le moule 23 en créant une force sur ce dernier, repéré Fm à la figure 4c, par un système à vérin par exemple, le pilon 26 suivant alors les mouvements du moule, son poids étant contrebalancé par un "contrepoids" P.Thus, in this operation, it will suffice to reassemble the mold 23 by creating a force on the latter, marked Fm in FIG. 4c, by a jack system for example, the pestle 26 then following the movements of the mold, its weight being counterbalanced by a "counterweight" P.

Néanmoins, afin de maintenir le pilon 26 en contact avec le produit frais contenu dans le moule 23, pour ne pas altérer l'état de surface supérieure du produit moulé, le système de compensation 33 permettre de créer un effort différentiel. Autrement dit, le poids P sera légèrement inférieur à la forme Fm afin que subsiste une force s'appliquant vers le bas pour maintenir en contact le produit et le pilon. A titre d'exemple, une force de l'ordre de 50 à 100 kg serait suffisante pour donner de bons résultats.However, in order to keep the pestle 26 in contact with the fresh product contained in the mold 23, so as not to alter the upper surface condition of the molded product, the compensation system 33 makes it possible to create a differential force. In other words, the weight P will be slightly less than the form Fm so that a downward force remains to keep the product and the pestle in contact. For example, a force of the order of 50 to 100 kg would be sufficient to give good results.

Enfin, la phase de démoulage est illustrée à la figure 4d. La plaque de manutention 14 étant préalablement disposée sur la table de réception 27, celle-ci n'étant plus en vibration, on redépose l'ensemble moule 23-pilon 26 comme décrit précédemment puis lorsque le moule est en contact avec la plaque de manutention 14, on immbilise verticalement le pilon 26 et on relève le moule 23.Finally, the demolding phase is illustrated in Figure 4d. The handling plate 14 being previously disposed on the reception table 27, the latter no longer being in vibration, the mold 23-pestle 26 assembly is re-deposited as described above then when the mold is in contact with the handling plate 14, the pestle 26 is vertically immobilized and the mold 23 is raised.

La figure 4d illustre la phase de remontée du moule 23, le blocage du pilon 26 étant schématisé par le sabot de frein repéré 34.FIG. 4d illustrates the ascent phase of the mold 23, the blocking of the pestle 26 being shown diagrammatically by the brake shoe marked 34.

Ensuite, lorsque le produit est complètement démoulé, on libère le pilon 26 puis on le relève pour autoriser le manutention des produits frais 13 ainsi obtenue, telle que précisée précédemment.Then, when the product is completely removed from the mold, the pestle 26 is released and then raised to allow handling of the fresh products 13 thus obtained, as specified above.

Les figures 5 et 6 montrent schématiquement une autre réalisation d'installation 1 de moulage de produits, qui comporte également un dispositif de moulage 17, un dispositif de vibration 18, un ensemble de plaques de manutention 14 du produit moulé.Figures 5 and 6 schematically show another embodiment of installation 1 for molding products, which also comprises a molding device 17, a vibration device 18, a set of handling plates 14 of the molded product.

A cet égard, pour la constitution de celle-ci, on se reportera à la description qui vient d'être faite en regard des figures 2 et 3, les mêmes repères ayant avantageusement été réutilisés pour les parties similaires.In this regard, for the constitution thereof, reference will be made to the description which has just been made with reference to Figures 2 and 3, the same references having advantageously been reused for similar parts.

Toutefois, la différence essentielle entre les deux dispositifs réside dans le mode de substitution des plaques de manutention 14 à la table de réception 27, après la phase de moulage.However, the essential difference between the two devices lies in the method of replacing the handling plates 14 at the receiving table 27, after the molding phase.

En effet, selon une caractéristique de la présente invention, la dite table de vibration 27 constitue substantiellement la table de réception du moule, et à l'issue de la phase de moulage, on substitue une plaque de manutention 14 à la dite table de réception 27.Indeed, according to a characteristic of the present invention, said vibration table 27 constitutes substantially the mold reception table, and at the end of the molding phase, a handling plate 14 is substituted for said reception table 27.

Toutefois, dans l'installation représentée aux figures 5 à 7, pour effectuer la substitution de la table 27 par la plaque 14, à l'issue de la phase de compactage, on maintient le pilon de compression 26 en contact avec le produit moulé contenu dans le moule 23 et on cesse l'effet de la compression pour faciliter la substitution ainsi que la pression sur le moule 23 qui avait pour rôle d'appliquer le moule 23 sur la table 27 et de comprimer la table de réception 27 sur la table vibrante 18, avant la phase de moulage.However, in the installation shown in FIGS. 5 to 7, in order to replace the table 27 with the plate 14, at the end of the compacting phase, the compression pestle 26 is kept in contact with the molded product contained in the mold 23 and the effect of the compression is stopped to facilitate substitution as well as the pressure on the mold 23 which had the role of applying the mold 23 on the table 27 and of compressing the reception table 27 on the table vibrating 18, before the molding phase.

Par ailleurs, rappelons que, préalablement à la substitution de la table de réception 27 par la plaque de manutention 14, on arrête la vibration à la fin de la phase de compactage.Furthermore, remember that, prior to the substitution of the receiving table 27 by the handling plate 14, the vibration is stopped at the end of the compacting phase.

En ce qui concerne la dite table de réception des produits, on a vu que l'on utilisait la partie supérieure 27 du dispositif de vibration 18. De plus, cette table de réception 27 est montée sur des moyens élastiques représentés schématiquement aux figures 7 par les repères 35 agissant dans le sens opposé de l'effort de compression du pilon 26.As regards the said product reception table, we have seen that the upper part 27 of the vibration device 18 was used. In addition, this reception table 27 is mounted on elastic means shown diagrammatically in FIGS. 7 by the pins 35 acting in the opposite direction of the compression force of the pestle 26.

Plus précisement, la table vibrante est montée sur des plots des suspension qui, une fois libérés par le moule 23, soulèvent l'ensemble table de réception, moule, produits et pilon. Le transfert des tables s'effectue alors sans effort important.More precisely, the vibrating table is mounted on suspension pads which, once released by the mold 23, raise the whole receiving table, mold, products and pestle. The tables are then transferred without significant effort.

Les figures 7a à 7e montrent les différentes phases successives de la substitution de la table de réception 27 par la plaque de manutention 14, après la phase de compactage, pour faire reposer les produits frais 13 qui viennent d'être moulés sur la dite plaque 14 et autoriser leur manutention traditionnellement.Figures 7a to 7e show the different phases successive of the substitution of the receiving table 27 by the handling plate 14, after the compacting phase, to rest the fresh products 13 which have just been molded on said plate 14 and allow their handling traditionally.

Pour autoriser cette substitution, la table de réception 27, substantiellement constituée par la partie supérieure du dispositif de vibration 18, présente des moyens pour s'escamoter sous l'action de la plaque de manutention 14.To allow this substitution, the reception table 27, substantially constituted by the upper part of the vibration device 18, has means for retracting under the action of the handling plate 14.

Par ailleurs, la table de réception 27 présente également des moyens de guidage de translation horizontale.Furthermore, the reception table 27 also has means for guiding horizontal translation.

En ce qui concerne la réalisation des dits moyens escamotables et dits moyens de guidage, ceux-ci seront réalisés selon des méthodes traditionnelles de coulissement d'organes connus par l'Homme de l'Art.With regard to the production of said retractable means and said guide means, these will be produced according to traditional methods of sliding organs known to those skilled in the art.

La figure 7a montre schématiquement le moule 23, le dispositif de vibration 18, la plaque de réception 27 et la plaque de manutention 14 respectivement positionnés les uns par rapport aux autres pendant la phase de moulage et de compactage.FIG. 7a schematically shows the mold 23, the vibration device 18, the receiving plate 27 and the handling plate 14 respectively positioned with respect to each other during the molding and compacting phase.

A l'issue de la phase de compactage, l'effet du pilon 26 est relâché et on "décomprime" le produit moulé. Ainsi, on pourra permettre la substitution de la table de réception 27 par la planche de manutention 14, comme le montre la figure 7b, en diminuant les effets de frottement.At the end of the compaction phase, the effect of the pestle 26 is released and the molded product is "decompressed". Thus, we can allow the substitution of the receiving table 27 by the handling board 14, as shown in Figure 7b, by reducing the effects of friction.

Cette substitution est provoquée par la translation de la plaque de manutention 14 qui pousse en sens opposé la table de réception 27 pour la dégager de la table vibrante et intercaler la plaque de manutention 14 entre le moule et le dispositif de vibration 18.This substitution is caused by the translation of the handling plate 14 which pushes the receiving table 27 in the opposite direction to disengage it from the vibrating table and interpose the handling plate 14 between the mold and the vibration device 18.

A cet égard, pour faciliter la substitution, la plaqe de manutention 14 présente une épaisseur sensiblement identique à celle de la table de réception 27 escamotable et une surface suffisante pour obturer la face ouverte 25 inférieure du moule 23.In this respect, to facilitate substitution, the handling plate 14 has a thickness substantially identical to that of the retractable receiving table 27 and a surface sufficient to close the lower open face 25 of the mold 23.

La figure 7c montre le démoulage du produit frais 13 sur la plaque de manutention 14. Pendant la phase de démoulage, le pilon 26 est maintenu en position et il y a coulissement vertical du moule 23 par rapport à ce dernier.Figure 7c shows the release of fresh product 13 on the handling plate 14. During the release phase, the pestle 26 is held in position and there is vertical sliding of the mold 23 relative to the latter.

La figure 7d montre le produit frais 13 démoulé, le pilon 26 et le moule relevés. A partir de ce moment, la plaque de manutention 14 supportant le ou les produits frais 13 peut être évacuée de la machine. Pour ce, la table de réception 27 est actionnée afin qu'elle puisse retrouver sa position initiale au-dessus du dispositif de vibration 18. Elle est mue d'un mouvement inverse à celui de la phase de substitution.FIG. 7d shows the fresh product 13 removed from the mold, the pestle 26 and the mold raised. From this moment, the plate of handling 14 supporting the fresh product or products 13 can be removed from the machine. For this, the reception table 27 is actuated so that it can return to its initial position above the vibration device 18. It is moved in a reverse movement to that of the substitution phase.

La figure 7e montre la phase d'évacuation de la plaque de manutention 14 sur le convoyeur 5, le retour en position initiale de la plaque 27 et le retour du moule 23 en contact direct avec celle-ci.FIG. 7e shows the phase of evacuation of the handling plate 14 on the conveyor 5, the return to the initial position of the plate 27 and the return of the mold 23 in direct contact with the latter.

Par ailleurs, un autre avantage de la présente installation réside au niveau de l'entretien et du dépannage de la machine rendus plus aisés par le fait que l'admission des plaques de manutention et leur évacuation avec les produits moulés frais se font du même côté de l'installation de moulage.Furthermore, another advantage of the present installation resides in the level of maintenance and troubleshooting of the machine made easier by the fact that the admission of the handling plates and their evacuation with the fresh molded products are done on the same side. of the molding installation.

A ce sujet, l'installation de moulage 1 comporte un dispositif d'alimentation en plaque de manutention 14, apte à disposer par l'avant de l'installation une plaque de manutention 14 sous le moule 23 puis apte à extraire par l'avant de l'installation la dite plaque de manutention 14 sur lequelle ont été démoulés les produits moulés 13.In this regard, the molding installation 1 comprises a device for feeding the handling plate 14, capable of placing a handling plate 14 under the mold 23 from the front of the installation, then capable of extracting from the front. of the installation, the said handling plate 14 on which the molded products 13 were removed from the mold.

Il est à remarquer que, pendant l'admission des plaques de la manutention 14 sous le produit qui vient d'être moulé, la table de réception 27 s'escamote vers l'arrière du dispositif de moulage 23 tel que cela est notamment illustré aux figures 7b à 7d.It should be noted that, during the admission of the handling plates 14 under the product which has just been molded, the reception table 27 retracts towards the rear of the molding device 23 as is particularly illustrated in Figures 7b to 7d.

Grâce au procédé de la présente invention et à l'installation de mise en oeuvre du dit procédé, on réalise donc le moulage, proprement dit, des produits indépendamment des plaques de manutention traditionnelles. Ainsi, on obtient un meilleur résultat et on augmente la durée de vie des plaques de manutention c'est pourquoi elles pourront être avantageusement réalisées en bois sans préjudice pour leur longévité. Néanmoins, tout autre matériau pourrait être envisagé également.Thanks to the process of the present invention and to the installation for implementing the said process, the molding, proper, of the products is therefore carried out independently of the traditional handling plates. Thus, a better result is obtained and the lifespan of the handling plates is increased, which is why they can advantageously be made of wood without prejudice to their longevity. However, any other material could also be considered.

Naturellement, d'autres mises en oeuvre de la présente invention, à la portée de l'Homme du Métier, aurient pu être envisagées sans pour autant sortir du cadre de l'invention. En particulier, l'Homme de l'Art adaptera les dispositifs connus dans le domaine selon les besoins et critères du procédé de l'invention.Naturally, other implementations of the present invention, within the reach of those skilled in the art, could have been envisaged without departing from the scope of the invention. In particular, those skilled in the art will adapt the devices known in the field according to the needs and criteria of the method of the invention.

Claims (12)

1. Procédé de fabrication de produits moulés, notamment de construction à base de ciment, tels que communément appelés parpaings ou autres produits similaires de forme, notamment mis en oeuvre dans une installation de pressage (1) de tels produits comportant au moins :
      - un dispositif de moulage (17) présentant au moins un moule (23) dont la face inférieure (25) est ouverte, et une table de réception du moule,
      - un ensemble de plaques de manutention (14) des produits moulés,
caractérisé par le fait que :
      - on dispose le moule (23) sur la table de réception (27) de sorte que celle-ci soit en contact direct avec la face inférieure (25) du moule (23),
      - on moule le ou les produits à obtenir,
      - on substitue une plaque de manutention (14) à la dite table de réception (27), après moulage, sous la face inférieure (25) du moule (23),
      - on démoule le ou les dits produits obtenus sur la dite plaque (14).1. Method for manufacturing molded products, in particular cement-based construction products, such as commonly called concrete blocks or other similar shaped products, in particular used in a pressing installation (1) of such products comprising at least:
a molding device (17) having at least one mold (23) whose lower face (25) is open, and a table for receiving the mold,
- a set of handling plates (14) for molded products,
characterized by the fact that:
the mold (23) is placed on the receiving table (27) so that the latter is in direct contact with the lower face (25) of the mold (23),
- the product (s) to be obtained are molded,
- a handling plate (14) is substituted for said receiving table (27), after molding, under the lower face (25) of the mold (23),
- The said product or products obtained on said plate (14) are removed from the mold. 2. Procédé de fabrication de produits moulés selon la revendication 1, l'installation de moulage (1) comportant en outre un dispositif de vibration (18) présentant une table vibrante (27), caractérisé par le fait que l'on utilise comme table de réception des produits la partie supérieure de la table vibrante (27).2. A method of manufacturing molded products according to claim 1, the molding installation (1) further comprising a vibration device (18) having a vibrating table (27), characterized in that one uses as table product reception the upper part of the vibrating table (27). 3. Procédé selon la revendication 1, caractérisé par le fait qu'on substitue un plaque de manutention (14) à la table de réception (27) en intercalant la dite plaque de manutention (14) et en séparant le moule (23) de la table de réception (27), le produit moulé frais étant contenu dans le moule (23).3. Method according to claim 1, characterized in that a handling plate (14) is substituted for the reception table (27) by inserting said handling plate (14) and separating the mold (23) from the receiving table (27), the fresh molded product being contained in the mold (23). 4. Procédé selon la revendication 3, le dispositif de moulage (17) comprenant en outre un pilon de compression (26) apte à pénétrer au niveau de la face supérieure (24) du moule (23) et à coulisser dans celui-ci, le moulage des produits étant réalisé notamment :
      - en remplissant le moule (23) de matière moulable.
      - en vibrant le moule (23) pour faciliter l'introduction de matière moulable,
      - en compactant la matière dans le moule (23) par action du pilon de compression (26), et par vibrations,
caractérisé par le fait que :
      - on relève l'ensemble moule (23)-pilon (26) sans provoquer de mouvements relatifs de l'un par rapport à l'autre,
      - on place sur la table de réception (27) la plaque de manutention (14),
      - on redescent l'ensemble moule (23)-pilon (26) sur la dite plaque (14).4. Method according to claim 3, the molding device (17) further comprising a compression pestle (26) able to penetrate at the level of the upper face (24) of the mold (23) and to slide therein, the molding of the products being carried out in particular:
- by filling the mold (23) with moldable material.
- by vibrating the mold (23) to facilitate the introduction of moldable material,
- by compacting the material in the mold (23) by action of the compression pestle (26), and by vibrations,
characterized by the fact that:
the mold assembly (23) -pilon (26) is raised without causing relative movements of one relative to the other,
- the handling plate (14) is placed on the reception table (27),
- The mold assembly (23) -pilon (26) is redesigned on said plate (14). 5. Procédé selon la revendication 4, caractérisé par le fait que, pendant les mouvements verticaux de l'ensemble moule (23)-pilon (26), pour intercaler la plaque de manutention (14), on maintient en contact le dit pilon (26) avec le dit produit moulé contenu dans le moule (23).5. Method according to claim 4, characterized in that, during the vertical movements of the mold assembly (23) -pilon (26), to insert the handling plate (14), said pestle is kept in contact ( 26) with said molded product contained in the mold (23). 6. Procédé de fabrication de produits moulés selon la revendication 1, le dispositif de moulage (17) comprenant en outre un pilon de compression (26) apte à pénétrer au niveau de la face supérieure (24) du moule (23) et à coulisser dans celui-ci, le moulage des produits étant réalisé notamment en remplissant le moule (23) de matière moulable puis en compactant la matière dans le moule (23) par l'action du pilon de compression (26), caractérisé par le fiat qu'à l'issue de la phase de compactage, on maintient le pilon de compression (26) en contact avec le produit moulé contenu dans le moule (23) et on cesse l'effet de compression ainsi que la pression sur le moule (23) pour autoriser la substitution de la dite table (27) par la dite plaque (14).6. A method of manufacturing molded products according to claim 1, the molding device (17) further comprising a compression pestle (26) adapted to penetrate at the upper face (24) of the mold (23) and to slide. in this, the molding of the products being carried out in particular by filling the mold (23) with moldable material and then compacting the material in the mold (23) by the action of the compression pestle (26), characterized by the fact that '' at the end of the compaction phase, the compression pestle (26) is kept in contact with the molded product contained in the mold (23) and the compression effect and the pressure on the mold (23) are stopped ) to authorize the substitution of said table (27) by said plate (14). 7. Procédé de fabrication de produits moulés selon la revendication 6, caractérisé par le fait que la table de réception (27) est montée sur des moyens élastiques (35) agissant dans le sens opposé de l'effort de compression du pilon (26).7. A method of manufacturing molded products according to claim 6, characterized in that the receiving table (27) is mounted on elastic means (35) acting in the opposite direction of the compressive force of the pestle (26) . 8. Installation de moulage (1), autorisant notamment la mise en oeuvre du procédé de fabrication de produits moulés selon la revendication 1, comportant au moins :
      - un dispositif d'alimentation (21, 22) en matière moulable,
      - un dispositif de moulage (17) présentant un moule (23) dont la face inférieure (25) est ouverte, et un pilon de compression 26 coopérant avec le dit moule (23),
      - un dispositif de vibration (18) présentant une table de vibration (27),
caractérisée par le fait que la dite table de vibration (27) constitue substantiellement la table de réception du moule et la paroi inférieure (25) du moule (23).8. Molding installation (1), in particular authorizing the implementation of the process for manufacturing molded products according to claim 1, comprising at least:
- a feed device (21, 22) of moldable material,
- a molding device (17) having a mold (23) whose lower face (25) is open, and a compression pestle 26 cooperating with said mold (23),
- a vibration device (18) having a vibration table (27),
characterized by the fact that said vibration table (27) constitutes substantially the mold receiving table and the lower wall (25) of the mold (23). 9. Installation selon la revendication 8, caractérisée par le fait que le moule (23) et le pilon de compression (26) du dispositif de moulage (17) sont prévus à coulissement vertical par rapport à la table vibrante (27) et, tels que lors de la remontée du moule (23), pour insérer la plaque de manutention (14), le pilon (26) suive les mouvements verticaux du moule (23) sans provoquer d'efforts importants sur le ou les produits susceptibles de le ou les démouler.9. Installation according to claim 8, characterized in that the mold (23) and the compression pestle (26) of the molding device (17) are provided with vertical sliding relative to the vibrating table (27) and, such that during the ascent of the mold (23), to insert the handling plate (14), the pestle (26) follows the vertical movements of the mold (23) without causing significant efforts on the product or products likely to or unmold them. 10. Installation selon la revendication 9, caractérisée par le fait que le pilon (26) est monté sur un système de compensation (33) du type contrepoids apte à annihiler sensiblement le poids du pilon (26) lors de la remontée ou de la descente du moule (23) pendant la phase d'insertion de la plaque de manutention (14).10. Installation according to claim 9, characterized in that the pestle (26) is mounted on a compensation system (33) of the counterweight type capable of substantially annihilating the weight of the pestle (26) during the ascent or descent of the mold (23) during the insertion phase of the handling plate (14). 11. Installation de moulage selon la revendication 8, caractérisée par le fait que la table de réception (27), constituée par la partie supérieure du dispositif de vibration (18), présente des moyens pour s'escamoter sous l'action de la plaque de manutention (14) et/ou des moyens de guidage de translation horizontale.11. Molding installation according to claim 8, characterized in that the receiving table (27), constituted by the upper part of the vibration device (18), has means for retracting under the action of the plate handling (14) and / or horizontal translation guide means. 12. Installation de moulage selon la revendication 11, caractérisée par le fait que la table de manutention (14) présente une épaisseur sensiblement identique à celle de la table de réception (27) escamotable et une surface suffisante pour obturer la face ouverte (22) inférieure du moule (23).12. Molding installation according to claim 11, characterized in that the handling table (14) has a thickness substantially identical to that of the retractable reception table (27) and an area sufficient to close the open face (22) bottom of the mold (23).
EP87440088A 1987-01-26 1987-12-28 Method for making moulded articles and moulding apparatus for performing the method Withdrawn EP0277452A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8701171 1987-01-26
FR8701171A FR2609928A1 (en) 1987-01-26 1987-01-26 Method for moulding moulded products and moulding installations allowing implementation of the said method
FR8710414A FR2618094A1 (en) 1987-07-16 1987-07-16 Process for the manufacture of moulded products and moulding plant enabling the said process to be used
FR8710414 1987-07-16

Publications (1)

Publication Number Publication Date
EP0277452A1 true EP0277452A1 (en) 1988-08-10

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EP87440088A Withdrawn EP0277452A1 (en) 1987-01-26 1987-12-28 Method for making moulded articles and moulding apparatus for performing the method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688162A1 (en) * 1992-03-04 1993-09-10 Demler Sa PROCESS FOR PRODUCING PRESSURE MOLDED CONCRETE ELEMENTS AND APPARATUS FOR CARRYING OUT SAID METHOD.
FR2729602A1 (en) * 1995-01-25 1996-07-26 Adler Sa Pressure moulding installation for concrete products
US5919497A (en) * 1995-03-01 1999-07-06 Hydraform Developments (Pty) Ltd. Simplified apparatus for forming building blocks

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1921003A (en) * 1928-02-20 1933-08-08 Karl T Romie Concrete block molding machine
FR850269A (en) * 1939-02-14 1939-12-12 Vibration process and machine for the production of agglomerates
DE685357C (en) * 1937-11-27 1939-12-16 Joseph Raab & Cie G M B H Device for exchanging the iron mold bases used for pressing against wooden bases
FR970361A (en) * 1951-01-03
FR1147772A (en) * 1955-04-20 1957-11-29 Erven H Trip S Betonmij N V Device for the manufacture of a piece of concrete or similar material, the side wall generatrices of which are all straight and parallel lines
GB1002387A (en) * 1964-07-07 1965-08-25 Schlosser & Co Gmbh Method of and apparatus for making concrete bodies
FR2057484A5 (en) * 1969-08-22 1971-05-21 Basaltes Francais
FR2474940A1 (en) * 1980-02-01 1981-08-07 Iacono Jean Casting mould for concrete pipe with rebated spigot and socket - uses vertical annular mould on demountable spigot former fixed on sheet metal base
EP0214684A1 (en) * 1985-08-23 1987-03-18 Gebroeders Rook Beheer B.V. Method for manufacturing stones in a press, and press for manufacturing said stones

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR970361A (en) * 1951-01-03
US1921003A (en) * 1928-02-20 1933-08-08 Karl T Romie Concrete block molding machine
DE685357C (en) * 1937-11-27 1939-12-16 Joseph Raab & Cie G M B H Device for exchanging the iron mold bases used for pressing against wooden bases
FR850269A (en) * 1939-02-14 1939-12-12 Vibration process and machine for the production of agglomerates
FR1147772A (en) * 1955-04-20 1957-11-29 Erven H Trip S Betonmij N V Device for the manufacture of a piece of concrete or similar material, the side wall generatrices of which are all straight and parallel lines
GB1002387A (en) * 1964-07-07 1965-08-25 Schlosser & Co Gmbh Method of and apparatus for making concrete bodies
FR2057484A5 (en) * 1969-08-22 1971-05-21 Basaltes Francais
FR2474940A1 (en) * 1980-02-01 1981-08-07 Iacono Jean Casting mould for concrete pipe with rebated spigot and socket - uses vertical annular mould on demountable spigot former fixed on sheet metal base
EP0214684A1 (en) * 1985-08-23 1987-03-18 Gebroeders Rook Beheer B.V. Method for manufacturing stones in a press, and press for manufacturing said stones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688162A1 (en) * 1992-03-04 1993-09-10 Demler Sa PROCESS FOR PRODUCING PRESSURE MOLDED CONCRETE ELEMENTS AND APPARATUS FOR CARRYING OUT SAID METHOD.
WO1993017846A1 (en) * 1992-03-04 1993-09-16 Demler S.A. Method for manufacturing die-cast concrete elements and apparatus therefor
FR2729602A1 (en) * 1995-01-25 1996-07-26 Adler Sa Pressure moulding installation for concrete products
US5919497A (en) * 1995-03-01 1999-07-06 Hydraform Developments (Pty) Ltd. Simplified apparatus for forming building blocks

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