EP0922548B1 - Process for moulding thin panels from castable material, in particular plaster, device for carrying out the process and obtained product - Google Patents
Process for moulding thin panels from castable material, in particular plaster, device for carrying out the process and obtained product Download PDFInfo
- Publication number
- EP0922548B1 EP0922548B1 EP97402921A EP97402921A EP0922548B1 EP 0922548 B1 EP0922548 B1 EP 0922548B1 EP 97402921 A EP97402921 A EP 97402921A EP 97402921 A EP97402921 A EP 97402921A EP 0922548 B1 EP0922548 B1 EP 0922548B1
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- EP
- European Patent Office
- Prior art keywords
- panels
- moulding
- mobile
- frame
- mould
- 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.)
- Expired - Lifetime
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
- B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
- B28B7/243—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces for making plates, panels or similar sheet- or disc-shaped objects
Definitions
- the invention relates to a method for molding plates. fines of flowable material, in particular plaster, in accordance with preamble of claim 1, a device for setting of the process and the product obtained.
- EP-A-0 161 374 discloses a method and device for molding thin plasterboards, thick less than 40 mm, which opens the mold, in a small proportion, so as to release the pressure of setting of the material, which expands upon solidification, on the mold, and thus facilitate the extrusion of thin plates made out of the mold.
- this technique cannot prevent material from accumulating at the opening of the mold obstructing the closing in one dimension accurate reproducible mold.
- Said mold cavity formation is carried out from advantageously by means of rigid intermediate plates, mobile in translation and guided with watertight seal lower part of the molding chamber, the plates dividers being evenly distributed parallel to each other, in the molding chamber, short distance from each other.
- Said external rigid frame advantageously constitutes with the intermediate plates in the lower position the chamber molding. It is advantageously mounted in rolling guide or sliding relative to the interlayers end of the molding chamber (on bearings with rollers on the end intermediate plates), being raised in the molding position and lowered for demolding. In this way, the translational effort of the frame for loosening the molding chamber, on demolding, is reduced.
- the rigid frame Upon demolding, the rigid frame is translated downwards, loosening the molding chamber, and then the plates dividers are lowered, sliding effortlessly over the molded material plates held in the chamber molding.
- the molding chamber is advantageously in the form of a tank rectangular, open upwards, where the material to be molded is poured (poured), being provided with lights at its bottom for the sealed passage of the intermediate plates forming mold imprints.
- This chamber can be provided with mold bottoms, independent parts, arranged between the plates dividers, these bottoms being movable for the evacuation of the molded material plates, on demolding.
- the mold bases are fixed, of so that the molded plates do not have to be moved demoulding, the intermediate plates being released in translation on the bottom out of the molded plates, these then being maintained during this release.
- the molded material plates are advantageously held by a movable gripper device for handling taken on the edge of the plates.
- the external rigid frame being lowered down and even the molding intermediate plates, at the level of the mold bases, handling of molded plates may be executed at a short distance in height from the bottom of mold and therefore with benefit in handling height of these molded plates.
- the invention also relates to the device for placing using the previously defined molding process and even the product obtained.
- the product obtained results from the process. It consists in the form of plates of variable thickness and approximately at minus 5 mm thick, with or without interlocking edges plate assembly.
- Figures 1 and 2 show two embodiments of devices or machines for the implementation of a industrial manufacturing process for plasterboard thin, armed with diverse and large fibers and with or without peripheral interlocking moldings.
- Figure 2 is similar to Figure 1, allowing a gain in height of the machine by integrating the cylinders in the upper part, at the level of the molding chamber.
- the device according to the invention consists of a plurality of fixed mold bases 2 connected to a support fixed constituting the frame 6 of the machine. Mold bottoms 2 are mounted on side bars 9 integral with the frame 6.
- Vertically movable intermediate plates 3 are assembled on a mobile support 4 according to a movement of vertical translation relative to the frame 6. These plates inserts ensure the molding of the faces of the plates plaster.
- a movable external frame 1, also animated by a vertical translational movement relative to the frame 6, ensures the molding of the edge, by moldings 8 of the plates plastering and guiding by internal slides 7 of inserts 3.
- the machine according to Figure 1 comprises, cylinders 10 integral with the chassis 6 and coupled to the mobile chassis 4 and cylinders 11 fixed to the frame 6 and coupled to the frame mobile 1. All of these cylinders have one stroke corresponding to the maximum height of the plasterboard at achieve.
- On the mobile chassis or the mobile beam 4 are fixed by their lower edge, the mobile plates 3 or molding plates sliding between the bottoms mold 2.
- the two movable end plates 3 have on the upper part of their outer faces a seal sealing 12 with respect to the corresponding internal face mobile frame 1 as well as sliding guide systems of frame 1, for example with needle roller tracks 13.
- the movable external frame 1 comprises (FIG. 4) on its front and rear internal faces the molding elements 8 and 7 aforementioned for shaping the edge of the plates to mold and for guiding the moving plates 3 respectively.
- this same movable frame 1 comprises two smooth side faces 14 for making said sealing and said sliding guide on the paths of needle bearing 13, relative to the two plates end mobile 3.
- the supports 9 of the mold bases each consist of ( Figures 1 and 5) by two lateral columns allowing the moving frame 4.
- the mold bases 2 are fitted (FIG. 5) on their upper face of a molding 15 for shaping the edge lower of the molding plates and on the periphery of a joint seal 16 also providing guiding in translation movable plates 3 along their length.
- This joint seal is provided with a slit supplied with demolding at constant pressure which when moving the movable frame and plates 3 ensures their lubrication.
- the translation cylinders of the mobile plates 3 are controlled so that the cylinders are in the low position 10, therefore of the movable chassis 4, the upper edge of the plates mobile 3 is at the same level as the top of the moldings 15 mold bottoms 2.
- the high extension position of the cylinders 10, therefore of the movable chassis 4, corresponds to the height maximum molding of the movable plates 3.
- the upper face of the outer frame 1 is at the same level as the top of the moldings 15 of the funds molds 2 and in the high position of these jacks, it is at same level as the plates 3.
- FIGS 6 to 9 illustrate this operation showing the different relative positions of the three parties main features of the device.
- Figure 6 shows in schematic section the position plaster casting.
- the intermediate plates 3 are in low position relative to the frame 6 and the outer frame 1 is in the intermediate position (halfway).
- Figure 7 shows the molding position.
- the intermediate plates 3 and the outer frame 1 are in high position relative to the frame 6.
- Figure 8 shows the release position.
- the outer frame 1 is in the low position on the frame 6 and the intermediate plates 3 are in the high position relative to to the frame 6.
- FIG. 9 represents the demolding position and removal of the plasterboard made.
- the framework outside 1 and the intermediate plates 3 are in position low compared to the frame 6.
- the intermediate plates 3, the mold bases 2 and the frame exterior 1 constitute a receptacle for plaster to molding allowing the plaster to bubble out before molding.
- a vibrating device (not shown) arranged in said tank or the molding chamber allows the evacuation of bubbles air.
- the movable plates 3 are in the low position at level of the fixed mold bases 2 and the movable frame outside 1 is in an intermediate position (substantially halfway). This position is suitable for receive the volume quantity of the mixture without overflow plaster liquid to be poured.
- the fixed mold bottoms 2 being provided with sealing means 16 at their molding 15 and the end plates 3 also being provided with sealing means 12 on the top of their faces external with internal adjacent faces of the frame exterior 1, the assembly thus produces a sealed container low height, allowing the mixture to spill plaster to be poured without turbulence or introduction of air.
- This tank allows the natural distribution of the liquid mixture of plaster above the mold bases 2 and the release of air bubbles trapped by the fibers introduced during mixing, this using the vibrator above immersed in the liquid mixture.
- the plaster spill ( Figure 6) is performed at a height much lower than the actual height plates, and that in none of these operations the funds of fixed mold 2 do not move, which reduces the height of mixers, machines and buildings receiving the installation.
- the height of the machine according to the figure 7 can be reduced to a height equal to twice the height of the plasterboard increased by thicknesses, respectively, fixed mold bottoms 2, chassis 4 support for movable plates 3 and chassis 6 support for all.
- the mobile outer frame 1 with its moldings 7 and 8 for molding the two vertical edges of the plasterboard and movable plate guide, stripping during its descent the lateral edge of the mobile plates 3 and the vertical edges of the plasterboard resting on the fixed mold bases 2. All the constraints of dilations due to the setting of the plaster are released, the plasterboards having to undergo only one friction on their song (minimal).
- the moldings 15 are provided a peripheral groove supplied with demolding oil which ensures regular oiling of the intermediate plates 3 and the outer frame 1 when they move relative to mold bases 2. Indeed, given the low space between two intermediate plates 3 (from 5 mm), it is not possible to apply effectively by spraying the oil on the inside of the mold, as does it conventionally.
- Figure 10 shows a device for performing the upper moldings of plasterboard.
- these moldings are produced by a plurality of rollers 19 having the counter-shape of the molding, and turning around a common axis 20 perpendicular to plasterboard and simultaneously with the rotation of the roller, so that the circumferential speed of the roller be identical to the axis translation speed? this can be achieved for example by a 20-axis system carrying said rollers 19 and comprising at its two ends a pinion 21 of diameter equal to that of the roller and rolling on a fixed rack 22 placed on the same level than the top of the drywall.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Cosmetics (AREA)
- Silicon Compounds (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
L'invention concerne un procédé de moulage de plaques
fines de matĂ©riau coulable, notamment de plĂ¢tre, conforme au
préambule de la revendication 1, un dispositif pour la mise
en oeuvre du procédé et le produit obtenu.The invention relates to a method for molding plates.
fines of flowable material, in particular plaster, in accordance with
preamble of
On connaĂt les carreaux de plĂ¢tre Ă faces lisses utilisĂ©s notamment pour la rĂ©alisation de cloisons dans le bĂ¢timent. Ces carreaux, relativement Ă©pais sont obtenus par moulage dans des empreintes de moule verticales, Ă©tant extraits par extrusion Ă la partie supĂ©rieure du moule Ă l'aide d'un poussoir agissant sur la section de la partie infĂ©rieure du carreau. NĂ©anmoins, cette technique ne permet pas en raison de la pression d'extrusion sur la section infĂ©rieure du carreau d'obtenir des carreaux dont l'Ă©paisseur est infĂ©rieure Ă 40 mm.We know the smooth-faced plaster tiles used in particular for the production of partitions in the building. These relatively thick tiles are obtained by molding in vertical mold cavities, being extruded at the top of the mold using a pusher acting on the section of the part bottom of the pane. However, this technique does not allow not due to the extrusion pressure on the section bottom of the tile to get tiles which the thickness is less than 40 mm.
On connaĂt par EP-A-0 161 374 un procĂ©dĂ© et dispositif pour mouler des plaques fines de plĂ¢tres, d'Ă©paisseur infĂ©rieure Ă 40 mm, qui rĂ©alise une ouverture du moule, dans une faible proportion, de manière Ă libĂ©rer la pression de prise du matĂ©riau, qui se dilate Ă la solidification , sur le moule, et faciliter ainsi l'extrusion des plaques fines rĂ©alisĂ©es hors du moule. NĂ©anmoins, cette technique ne peut empĂªcher que du matĂ©riau ne s'accumule au niveau de l'ouverture du moule gĂªnant la fermeture dans une dimension prĂ©cise reproductible du moule.EP-A-0 161 374 discloses a method and device for molding thin plasterboards, thick less than 40 mm, which opens the mold, in a small proportion, so as to release the pressure of setting of the material, which expands upon solidification, on the mold, and thus facilitate the extrusion of thin plates made out of the mold. However, this technique cannot prevent material from accumulating at the opening of the mold obstructing the closing in one dimension accurate reproducible mold.
On connaĂt encore par EP-A-0 610 529 un procĂ©dĂ© et dispositif de moulage de plaques fines de plĂ¢tre dont l'extrusion des plaques fines est effectuĂ©e au moins sur la section de deux plaques fines, dans une chambre de moulage partielle, de manière Ă limiter la pression d'extrusion sur la section de chacune des plaques moulĂ©es. Cette technique rĂ©duit effectivement la pression d'extrusion sur chacune des plaques, par exemple, dans la proportion de 50 % relativement Ă une plaque pour deux plaques moulĂ©es dans une chambre partielle de moulage, mais en raison de cette disposition de chambres de moulage partielles, elle rend difficile la rĂ©partition uniforme du matĂ©riau coulĂ© dans les diffĂ©rentes chambres partielles de moulage. Par ailleurs, le matĂ©riau contenant gĂ©nĂ©ralement des fibres de verre, il est Ă©galement difficile d'Ă©vacuer l'air introduit lors du mĂ©lange et retenu dans celui-ci par les fibres.We also know from EP-A-0 610 529 a process and device for molding thin plasterboard including thin plates are extruded at least on the section of two thin plates, in a molding chamber partial, so as to limit the extrusion pressure on the section of each of the molded plates. This technique effectively reduces the extrusion pressure on each plates, for example, in the proportion of 50% relative to one plate for two plates molded in one partial molding chamber but because of this provision of partial molding chambers, it makes difficult the uniform distribution of the material cast in the different partial molding chambers. In addition, the material usually containing glass fibers it is also difficult to exhaust the air introduced during mixture and retained therein by the fibers.
L'invention a pour but de remĂ©dier Ă ces inconvĂ©nients et propose un procĂ©dĂ© de moulage de plaques fines de matĂ©riau coulable, notamment de plĂ¢tre, en prise de solidification avec dilatation au cours du moulage, dans des empreintes de moule d'une chambre de moulage, caractĂ©risĂ© en ce qu'il consiste Ă :
- recevoir dans la chambre de moulage ledit matériau coulé, dans un volume déterminé correspondant au moulage des dites empreintes de moule,
- vibrer le matériau coulé dans la chambre de moulage de façon à en évacuer l'air, et à en répartir parfaitement le niveau,
- former lesdites empreintes de moule au sein de la chambre de moulage,
- ceinturer ladite chambre de moulage pour lui permettre de résister sans déformation à la prise de solidification des plaques moulées, dans la durée de moulage, par exemple au moyen d'un cadre rigide externe translaté autour de la chambre du moulage,
- désserrer ledit ceinturage de chambre de moulage après moulage de façon à libérer lesdites empreintes de moule de la pression de moulage du matériau, et
- évacuer les empreintes de moule et le matériau moulé pour traitement ultérieur.
- receiving said cast material in the molding chamber, in a determined volume corresponding to the molding of said mold cavities,
- vibrate the material poured into the molding chamber so as to evacuate the air, and to distribute the level perfectly,
- forming said mold imprints within the molding chamber,
- belt said molding chamber to allow it to resist without deformation the setting of solidification of the molded plates, during the molding period, for example by means of an external rigid frame translated around the molding chamber,
- loosening said mold chamber belt after molding so as to release said mold imprints from the molding pressure of the material, and
- remove mold impressions and molded material for further processing.
Ladite formation des empreintes de moule est réalisée de façon avantageuse au moyen de plaques intercalaires rigides, mobiles en translation et guidées à joint étanche à la partie inférieure de la chambre de moulage, les plaques intercalaires étant réparties de façon régulière parallèlement l'une à l'autre, dans la chambre de moulage, à faible distance l'une de l'autre.Said mold cavity formation is carried out from advantageously by means of rigid intermediate plates, mobile in translation and guided with watertight seal lower part of the molding chamber, the plates dividers being evenly distributed parallel to each other, in the molding chamber, short distance from each other.
Ledit cadre rigide externe constitue avantageusement avec les plaques intercalaires en position basse la chambre de moulage. Il est avantageusement monté en guidage roulant ou glissant relativement aux plaques intercalaires d'extrémité de la chambre de moulage (sur des roulements à rouleaux sur les plaques intercalaires d'extrémité), étant élevé en position de moulage et abaissé pour le démoulage. De cette façon, l'effort de translation du cadre pour désserrer la chambre de moulage, au démoulage, est réduit.Said external rigid frame advantageously constitutes with the intermediate plates in the lower position the chamber molding. It is advantageously mounted in rolling guide or sliding relative to the interlayers end of the molding chamber (on bearings with rollers on the end intermediate plates), being raised in the molding position and lowered for demolding. In this way, the translational effort of the frame for loosening the molding chamber, on demolding, is reduced.
Au démoulage, le cadre rigide est translaté vers le bas, desserrant la chambre de moulage, et ensuite les plaques intercalaires sont descendues, glissant sans effort sur les plaques de matériau moulées maintenues dans la chambre de moulage.Upon demolding, the rigid frame is translated downwards, loosening the molding chamber, and then the plates dividers are lowered, sliding effortlessly over the molded material plates held in the chamber molding.
La chambre de moulage est avantageusement Ă forme de bac rectangulaire, ouvert vers le haut, oĂ¹ le matĂ©riau Ă mouler est dĂ©versĂ© (coulĂ©), Ă©tant pourvue de lumières en son fond pour le passage Ă©tanche des plaques intercalaires formant empreintes de moule.The molding chamber is advantageously in the form of a tank rectangular, open upwards, where the material to be molded is poured (poured), being provided with lights at its bottom for the sealed passage of the intermediate plates forming mold imprints.
Cette chambre peut Ăªtre pourvue de fonds de moule, pièces indĂ©pendantes, disposĂ©s entre les plaques intercalaires, ces fonds pouvant Ăªtre montĂ©s mobiles pour l'Ă©vacuation des plaques de matĂ©riau moulĂ©es, au dĂ©moulage.This chamber can be provided with mold bottoms, independent parts, arranged between the plates dividers, these bottoms being movable for the evacuation of the molded material plates, on demolding.
De façon avantageuse, les fonds de moule sont fixes, de sorte que les plaques moulĂ©es n'ont pas Ă Ăªtre bougĂ©es au dĂ©moulage, les plaques intercalaires Ă©tant dĂ©gagĂ©es en translation sur le bas hors des plaques moulĂ©es, celles-ci Ă©tant alors maintenues au cours de ce dĂ©gagement.Advantageously, the mold bases are fixed, of so that the molded plates do not have to be moved demoulding, the intermediate plates being released in translation on the bottom out of the molded plates, these then being maintained during this release.
Les plaques de matériau moulées sont avantageusement maintenues par un dispositif à pince mobile de manutention à prise sur le chant des plaques.The molded material plates are advantageously held by a movable gripper device for handling taken on the edge of the plates.
Le cadre rigide externe Ă©tant descendu vers le bas et de mĂªme les plaques intercalaires de moulage, au niveau des fonds de moule, la manutention des plaques moulĂ©es pourra Ăªtre exĂ©cutĂ©e Ă faible distance en hauteur des fonds de moule et donc avec bĂ©nĂ©fice dans la hauteur de manutention de ces plaques moulĂ©es.The external rigid frame being lowered down and even the molding intermediate plates, at the level of the mold bases, handling of molded plates may be executed at a short distance in height from the bottom of mold and therefore with benefit in handling height of these molded plates.
L'invention concerne Ă©galement le dispositif pour mettre en oeuvre le procĂ©dĂ© de moulage dĂ©fini prĂ©cĂ©demment et de mĂªme le produit obtenu. The invention also relates to the device for placing using the previously defined molding process and even the product obtained.
Le dispositif selon l'invention pour le moulage de plaques minces de matĂ©riau coulable, notamment de plĂ¢tre, comporte essentiellement :
- une chambre de moulage apte à recevoir le matériau coulé, dans un volume déterminé correspondant au moulage des plaques à réaliser,
- un dispositif vibreur du matériau coulé dans la chambre de moulage,
- un dispositif apte Ă former des empreintes de moule au sein de la chambre de moulage au moyen de plaques intercalaires mobiles au sein de la chambre de moulage,
- un dispositif apte Ă ceinturer la chambre de moulage et empĂªchant toute dĂ©formation de cette dernière lors de la prise de solidification des plaques moulĂ©es, et Ă la dĂ©sserrer au dĂ©moulage de façon Ă permettre l'Ă©vacuation facile et sans extrusion des plaques moulĂ©es.
- a molding chamber capable of receiving the cast material, in a determined volume corresponding to the molding of the plates to be produced,
- a vibrating device for the material poured into the molding chamber,
- a device capable of forming mold imprints within the molding chamber by means of mobile intermediate plates within the molding chamber,
- a device capable of encircling the molding chamber and preventing any deformation of the latter during the setting of the solidification of the molded plates, and loosening it on demolding so as to allow easy evacuation and without extrusion of the molded plates.
Le produit obtenu rĂ©sulte du procĂ©dĂ©. Il est constituĂ© sous forme de plaques d'Ă©paisseur variable et d'environ au moins 5 mm d'Ă©paisseur, avec ou non des bords Ă emboĂtement d'assemblage des plaques.The product obtained results from the process. It consists in the form of plates of variable thickness and approximately at minus 5 mm thick, with or without interlocking edges plate assembly.
L'invention est illustrée ci-après à l'aide d'exemples de réalisation et en référence aux dessins annexés, sur lesquels :
- les figures 1 et 2 sont des vues en Ă©lĂ©vation de deux dispositifs ou machines pour la mise en oeuvre du procĂ©dĂ© de moulage de plaques de plĂ¢tre selon l'invention,
- la figure 3 est une vue de côté de la machine selon la figure 1,
- la figure 4 est une vue partielle de dessus de la chambre de moulage des machines selon les figures 1 et 2,
- la figure 5 est une vue schématique en coupe partielle montrant le fond de la chambre de moulage,
- les figures 6, 7, 8 et 9 montrent schématiquement les diverses phases du procédé selon l'invention et
- la figure 10 est une vue du dispositif de formation du bord Ă emboĂtement supĂ©rieur des plaques de plĂ¢tre moulĂ©es.
- FIGS. 1 and 2 are elevation views of two devices or machines for implementing the plasterboard molding method according to the invention,
- FIG. 3 is a side view of the machine according to FIG. 1,
- FIG. 4 is a partial top view of the molding chamber of the machines according to FIGS. 1 and 2,
- FIG. 5 is a schematic view in partial section showing the bottom of the molding chamber,
- FIGS. 6, 7, 8 and 9 schematically show the various phases of the process according to the invention and
- Figure 10 is a view of the edge forming device with upper socket molded plasterboard.
Les figures 1 et 2 montrent deux formes de rĂ©alisation de dispositifs ou machines pour la mise en oeuvre d'un procĂ©dĂ© de fabrication industrielle de plaques de plĂ¢tre minces, armĂ©es de fibres diverses et de grande dimension et comportant ou non des moulures d'emboĂtement pĂ©riphĂ©rique.Figures 1 and 2 show two embodiments of devices or machines for the implementation of a industrial manufacturing process for plasterboard thin, armed with diverse and large fibers and with or without peripheral interlocking moldings.
La figure 2 est analogue à la figure 1, permettant un gain de hauteur de la machine en intégrant les corps de vérins en partie haute, au niveau de la chambre de moulage.Figure 2 is similar to Figure 1, allowing a gain in height of the machine by integrating the cylinders in the upper part, at the level of the molding chamber.
Le dispositif selon l'invention est constitué d'une
pluralité de fonds de moules fixes 2 reliés à un support
fixe constituant le bĂ¢ti 6 de la machine. Les fonds de moule
2 sont montĂ©s sur des barres latĂ©rales 9 solidaires du bĂ¢ti
6.The device according to the invention consists of a
plurality of fixed
Des plaques intercalaires 3 mobiles verticalement sont
assemblées sur un support 4 mobile selon un mouvement de
translation vertical par rapport au bĂ¢ti 6. Ces plaques
intercalaires assurent le moulage des faces des plaques de
plĂ¢tre. Un cadre extĂ©rieur 1 mobile, animĂ© Ă©galement d'un
mouvement de translation vertical par rapport au bĂ¢ti 6,
assure le moulage du chant, par des moulures 8 des plaques
de plĂ¢tres et le guidage par des glissières internes 7 des
plaques intercalaires 3.Vertically movable
La machine selon la figure 1 comprend, des vérins 10
solidaires du chĂ¢ssis 6 et accouplĂ©s au chĂ¢ssis mobile 4 et
des vĂ©rins 11 fixĂ©s sur le chĂ¢ssis 6 et accouplĂ©s au cadre
mobile 1. L'ensemble de ces vérins a une course
correspondant Ă la hauteur maximale des plaques de plĂ¢tre Ă
rĂ©aliser. Sur le chĂ¢ssis mobile ou la poutre mobile 4 sont
fixés par leur chant inférieur les plaques mobiles 3 ou
plaques intercalaires de moulage coulissant entre les fonds
de moule 2. Les deux plaques mobiles d'extrémité 3 possèdent
sur la partie haute de leurs faces extérieures un joint
d'étanchéité 12 par rapport à la face interne correspondante
du cadre mobile 1 ainsi que des systèmes de guidage glissant
du cadre 1, par exemple Ă chemins de roulement Ă aiguilles
13. Le cadre extérieur mobile 1 comporte (figure 4) sur ses
faces internes avant et arrière les éléments de moulure 8 et
7 prĂ©citĂ©s pour la mise en forme du chant des plaques Ă
mouler et pour le guidage des plaques mobiles 3
respectivement. En outre, ce mĂªme cadre mobile 1 comporte
deux faces latérales lisses 14 permettant de réaliser ladite
étanchéité et ledit guidage glissant sur les chemins de
roulement Ă aiguilles 13, relativement aux deux plaques
mobiles d'extrémité 3.The machine according to Figure 1 comprises,
Les supports 9 des fonds de moule sont constitués chacun
(figures 1 et 5) par deux colonnes latérales autorisant le
passage du bĂ¢ti mobile 4.The
Les fonds de moule 2 sont équipés (figure 5) sur leur
face supérieure d'une moulure 15 de mise en forme du chant
inférieur des plaques à mouler et en périphérie d'un joint
d'étanchéité 16 assurant également le guidage en translation
des plaques mobiles 3 sur leur longueur. Ce joint
d'étanchéité est pourvu d'une fente alimentée en huile de
démoulage à pression constante qui lors du déplacement du
cadre mobile et des plaques 3 assure leur graissage.The mold bases 2 are fitted (FIG. 5) on their
upper face of a
Les vérins de translation des plaques mobiles 3 sont
commandés de telle sorte que en position basse des vérins
10, donc du chĂ¢ssis mobile 4, le chant supĂ©rieur des plaques
mobiles 3 soit au mĂªme niveau que le dessus des moulures 15
des fonds de moule 2. La position haute d'extension des
vérins 10, donc du chassis mobile 4, correspond à la hauteur
maximale de moulage des plaques mobiles 3. En position basse
des vérins 11, la face supérieure du cadre extérieur 1 est
au mĂªme niveau que le dessus des moulures 15 des fonds de
moules 2 et en position haute de ces vérins, elle est au
mĂªme niveau que les plaques 3.The translation cylinders of the
Le fonctionnement de la machine est à présent précisé.
Il résulte de la combinaison des différentes positions
relatives des trois parties principales (fonds de moules 2,
plaques intercalaires 3 et cadre extérieur 1).The operation of the machine is now specified.
It results from the combination of different positions
relative of the three main parts (
Les figures 6 à 9 illustrent ce fonctionnement montrant les différentes positions relatives des trois parties principales du dispositif.Figures 6 to 9 illustrate this operation showing the different relative positions of the three parties main features of the device.
La figure 6 représente en coupe schématique la position
de coulage du plĂ¢tre. Les plaques intercalaires 3 sont en
position basse relativement au bĂ¢ti 6 et le cadre extĂ©rieur
1 est en position intermédiaire (à mi-course).Figure 6 shows in schematic section the position
plaster casting. The
La figure 7 représente la position de moulage. Les
plaques intercalaires 3 et le cadre extérieur 1 sont en
position haute relativement au bĂ¢ti 6.Figure 7 shows the molding position. The
La figure 8 représente la position de démoulage. Le
cadre extĂ©rieur 1 est en position basse sur le bĂ¢ti 6 et les
plaques intercalaires 3 sont en position haute par rapport
au bĂ¢ti 6.Figure 8 shows the release position. The
La figure 9 représente la position de démoulage et
d'enlèvement des plaques de plĂ¢tre rĂ©alisĂ©es. Le cadre
extérieur 1 et les plaques intercalaires 3 sont en position
basse par rapport au bĂ¢ti 6.FIG. 9 represents the demolding position and
removal of the plasterboard made. The framework
outside 1 and the
Dans la configuration relative Ă la figure 6, les
plaques intercalaires 3, les fonds de moule 2 et le cadre
extĂ©rieur 1 constituent un bac receveur pour le plĂ¢tre Ă
mouler permettant le dĂ©bullage du plĂ¢tre avant moulage. Un
dispositif vibreur (non représenté) disposé dans ledit bac
ou la chambre de moulage permet l'Ă©vacuation des bulles
d'air. Les plaques mobiles 3 sont en position basse au
niveau des fonds de moule fixes 2 et le cadre mobile
extérieur 1 est dans une position intermédiaire
(sensiblement à mi-course). Cette position est adaptée pour
recevoir sans débordement la quantité en volume du mélange
liquide de plĂ¢tre Ă couler. Les fonds de moule fixes 2 Ă©tant
pourvus de moyens d'étanchéité 16 au niveau de leur moulure
15 et les plaques d'extrémités 3 étant également pourvues de
moyens d'étanchéité 12 sur le haut de leurs faces
extérieures avec les faces adjacentes internes du cadre
extérieur 1, l'ensemble réalise ainsi un récipient étanche
de faible hauteur, ce qui permet un déversement du mélange
de plĂ¢tre Ă couler sans turbulence ni introduction d'air. Ce
bac permet la répartition naturelle du mélange liquide de
plĂ¢tre au dessus des fonds de moule 2 ainsi que le
dégagement des bulles d'air emprisonnées par les fibres
introduites lors du mélange, ceci à l'aide du vibreur
précité plongeant dans le mélange liquide. In the configuration relating to FIG. 6, the
On notera que le dĂ©versement du plĂ¢tre(figure 6) est
effectué à une hauteur très inférieure a la hauteur réelle
des plaques, et que dans aucune de ces opérations les fonds
de moule fixes 2 ne bougent, ce qui permet de réduire la
hauteur des mĂ©langeurs, des machines et des bĂ¢timents
recevant l'installation. La hauteur de la machine selon la
figure 7 peut Ăªtre rĂ©duite Ă une hauteur Ă©gale Ă deux fois
la hauteur de la plaque de plĂ¢tre augmentĂ©e des Ă©paisseurs,
respectivement, des fonds de moule fixes 2, du chĂ¢ssis 4
support des plaque mobiles 3 et du chĂ¢ssis 6 support de
l'ensemble.Note that the plaster spill (Figure 6) is
performed at a height much lower than the actual height
plates, and that in none of these operations the funds
of fixed
Avec un sol représenté au niveau 0 (figures 6 à 9), la
machine étant placée dans une fosse 17, il en résulte que
l'encombrement au dessus du sol est Ă©gal sensiblement Ă la
hauteur des plaques de plĂ¢tre 5 Ă produire.With a floor shown at level 0 (Figures 6 to 9), the
machine being placed in a
Le passage de la position illustrĂ©e par la figure 6 Ă
celle illustrée par la figure 7 passe par la montée du cadre
extérieur 1 et des plaques intercalaires 3 ce qui permet de
remplir les moules de faible Ă©paisseur ou empreintes du
moule réalisés à la remontée des plaques 3 au dessus des
fonds de moule 2, cette remontée se faisant par aspiration
du matériau sous vide. En effet, du fait de la viscosité du
mĂ©lange eau-plĂ¢tre et du faible Ă©cartement des plaques
intercalaires 3, le remplissage du moule ne peut Ăªtre
réalisé par simple coulée par gravité.The transition from the position illustrated in Figure 6 to
that illustrated by figure 7 passes by the rise of the
A la position haute (figure 7), on obtient une pluralité de moules ou empreintes de moules précises indéformables et le remplissage effectué par aspiration sans turbulence évite toute entrée d'air. Les moules ainsi constitués sont maintenus dans cette position jusqu'au durcissement du produit.In the high position (figure 7), a plurality is obtained of molds or imprints of precise non-deformable molds and filling by suction without turbulence avoids any air intake. The molds thus formed are kept in this position until the product.
Le passage de la position illustrĂ©e par la figure 7 Ă
celle illustrée par la figure 8 résulte de la descente du
cadre extérieur 1, ce qui libère latéralement les plaques
intercalaires 3 de leur guidage sur les glissières 7 du
cadre extĂ©rieur 1. Le plĂ¢tre en se solidifiant dans les
empreintes engendre en effet sur les plaques 3 une Ă©norme
pression de contact. Ceci permet de dégager complètement les
plaques de plĂ¢tre solidifiĂ©es de l'effet de ceinture du
cadre externe rigide 1 afin de procéder à leur évacuation
ultérieure.The transition from the position illustrated in Figure 7 to
that illustrated by figure 8 results from the descent of the
Le passage de la position illustrĂ©e par la figure 8 Ă
celle illustrée par la figure 9 montre le dégagement des
plaques intercalaires 3 des plaques de matériau moulé 5. Ce
dégagement est rendu possible par ladite libération latérale
des plaques intercalaires 3 Ă la simple pression
atmosphĂ©rique. Le plĂ¢tre, Ă©tablissant lors de sa prise le
vide par rapport Ă la plaque intercalaire, permet alors son
glissement avec des efforts faibles de frottement, les
plaques de plĂ¢tre Ă©tant retenues par les fonds de moule 2 en
position fixe. Ces faibles efforts de frottement des plaques
3 sur les plaques de plĂ¢tre permettent de procĂ©der Ă
l'extraction des plaques de plĂ¢tre sans atteindre le seuil
de compression critique à l'extrusion précité qui détruirait
la plaque de plĂ¢tre dans cette faible Ă©paisseur.The transition from the position illustrated in Figure 8 to
that illustrated by figure 9 shows the release of
On notera que le cadre extérieur mobile 1 avec ses
moulures 7 et 8 de moulage des deux chants verticaux des
plaques de plĂ¢tre et de guidage des plaques mobiles, dĂ©vĂªt
lors de sa descente le chant latéral des plaques mobiles 3
et les chants verticaux des plaques de plĂ¢tre appuyĂ©es sur
les fonds de moule fixes 2. Toutes les contraintes de
dilatation dues Ă la prise du plĂ¢tre sont libĂ©rĂ©es, les
plaques de plĂ¢tre n'ayant Ă subir qu'un frottement sur leur
chant (minime).Note that the mobile
En outre, avant le dégagement complet des plaques de
plĂ¢tre, la stabilitĂ© verticale de celles-ci est assurĂ©e au
moyen des plaques intercalaires 3 qui se déplacent de la
position illustrée par la figure 8 à la position illustrée
par la figure 9 et il est alors possible de saisir les
plaques de plĂ¢tre en appui sur les fonds de moules 2 Ă
l'aide d'une pince 18 (figure 9), ce qui les maintiendra
verticales lorsque les plaques intercalaires 3 auront
atteint leur position basse. L'enlèvement des plaques de
plĂ¢tre Ă l'aide des pinces peut Ăªtre effectuĂ© Ă ce moment,
ceci sans interrompre la continuité du mouvement de descente
des plaques 3.In addition, before the plates are completely disengaged
plaster, the vertical stability of these is ensured
by means of the
Enfin et comme précité, pour améliorer encore le
glissement des plaques intercalaires 3 et du cadre extérieur
1 sur les plaques de plĂ¢tre, les moulures 15 sont pourvus
d'une gorge périphérique alimentée en huile de démoulage qui
assure un huilage régulier des plaques intercalaires 3 et du
cadre extérieur 1 lors de leurs déplacements par rapport aux
fonds de moules 2. Effectivement, étant donné le faible
espace entre deux plaques intercalaires 3 (Ă partir de 5
mm), il n'est pas possible d'appliquer efficacement par
pulvérisation de l'huile sur l'intérieur du moule, comme on
le fait de façon conventionnelle.Finally and as mentioned above, to further improve the
sliding of the
La figure 10 montre un dispositif pour réaliser les
moulures supĂ©rieures des plaques de plĂ¢tre. Lorsque le
plĂ¢tre a atteint un Ă©tat de prise semi-pĂ¢teux en phase de
moulage, ces moulures sont réalisées par une pluralité de
galets 19 possédant la contre-forme de la moulure, et
tournant autour d'un axe commun 20 perpendiculaire aux
plaques de plĂ¢tre et simultanĂ©ment Ă la rotation du galet,
de manière à ce que la vitesse circonférentielle du galet
soit identique Ă la vitesse de translation de l'axe ? ceci
peut Ăªtre rĂ©alisĂ© par exemple par un système Ă un axe 20
portant lesdits galets 19 et comportant Ă ses deux
extrémités un pignon 21 de diamètre égal à celui du galet et
roulant sur une crĂ©maillère fixe 22 placĂ©e au mĂªme niveau
que la partie supĂ©rieure des plaques de plĂ¢tre.Figure 10 shows a device for performing the
upper moldings of plasterboard. When the
plaster has reached a semi-pasty setting state in the
molding, these moldings are produced by a plurality of
Claims (13)
- A process for moulding thin panels (5) of castable material, in particular plaster, which sets with expansion during moulding, in mould cavities in a moulding chamber, characterised in that it consists in:receiving in the moulding chamber said cast material, in a defined volume corresponding to the moulding of said mould cavities,vibrating the cast material in the moulding chamber in such a way as to evacuate the air and to distribute the level perfectly,forming said mould cavities within the moulding chamber,encircling said moulding chamber to allow it to resist without deformation the setting of the moulded panels, within the moulding period, for example by means of an external rigid frame (1) displaced translationally around the moulding chamber,releasing said means encircling the moulding chamber after moulding in such a way as to relieve said mould cavities of the moulding pressure of the material andremoving the mould cavities and the moulded material for subsequent treatment.
- A moulding process according to claim 1, characterised in that said forming of the mould cavities is performed by means of rigid divider panels (3), translationally mobile and guided in leakproof manner at the lower part of the moulding chamber, the panels (3) being distributed regularly, parallel with one another, in the moulding chamber, at a short distance from one another of less than 40 mm.
- A moulding process according to one of the preceding claims, characterised in that said external rigid frame (1) is a constituent element of the moulding chamber.
- A moulding process according to one of the preceding claims, characterised in that the rigid frame (1) is mounted with sliding or rolling guidance relative to the end divider panels (3), being raised in the moulding position and lowered for demoulding.
- A moulding process according to one of the preceding claims, characterised in that the moulding chamber takes the form of a rectangular vat, open at the top where the material to be moulded is poured in and being provided with slots in the bottom thereof for the leakproof passage of the panels (3) forming mould cavities and with means for translational guidance of the panels (3).
- A moulding process according to one of the preceding claims, characterised in that the moulding chamber is provided with mould bottoms (2) disposed between the panels (3).
- A moulding process according to claim 6, characterised in that the mould bottoms (2) are fixed, such that the moulded panels (5) do not have to be moved, the panels (3) being disengaged translationally downwards out from among the moulded panels, the latter thus being held during this disengagement.
- A moulding process according to claim 7, characterised in that the rigid frame (1) comprises guide channels (7) for the divider panels (3), and mouldings (8) for moulding the edges of the panels of material to be moulded, such that, during demoulding, the movement of the external frame (1) uncovers the side edges of the mobile panels (3) and the edges of the panels of solidified plaster (5) which are applied to the fixed mould bottoms, thus relieving virtually all the expansion stresses due to setting of the plaster, the mobile panels (3) then being able to descend without effort into the lower position while keeping vertical the plaster panels (5) produced.
- A moulding process according to claim 8, characterised in that the moulded panels (5) are held by a handling device (18) with mobile clamp acting on the edges of the panels (5).
- A moulding process according to one of preceding claims 7 - 9, characterised in that, the external rigid frame (1) being lowered and likewise the panels (3) to the level of the mould bottoms (2), handling of the moulded panels (5) may be performed at a short vertical distance from the mould bottoms (2) and thus to advantage within the handling height of said panels.
- A device for performing the process according to one of the preceding claims, characterised in that it comprises:a moulding chamber capable of receiving the cast material, in a defined volume corresponding to the moulding of the panels to be produced,a vibrating device for the cast material in the moulding chamber,a device capable of forming mould cavities within the moulding chamber by means of mobile divider panels (3) within the moulding chamber,a device capable of encircling the moulding chamber and preventing any deformation of the latter during setting of the moulded panels (5), and of releasing it for demoulding in such a way as to allow easy, extrusion-free removal of the moulded panels (5).
- A device according to claim 11, characterised in that it comprises a fixed chassis (6) supporting a plurality of mould bottoms (2) mounted on fixed supports (9), said supports (9) allowing passage of a mobile chassis (4), on which there is fixed a plurality of mobile panels (3) capable of sliding between the mould bottoms (2) until they occupy a lower position in which the upper edges of the mobile panels (3) are at the same level as the tops of the mould bottoms, and an upper position corresponding to the maximum moulding height, as well as a mobile external frame (1) sliding around the mould bottoms (2) from a lower position at the level of the upper surfaces of the mould bottoms (2) to an upper position identical to the upper positions of the mobile panels (3), the assembly of mobile panels (3), mould bottoms (2) and mobile external frame (1) constituting, in the intermediate position of the frame (1), said moulding chamber into which the material may be poured and, in an upper position of the frame (1) and the panels (3), a plurality of precise, non-deformable moulds into which the product to be moulded is introduced by suction without inlet of air and held until it has hardened, and releasing the moulding chamber in the lower position of the frame (1) to allow the mobile panels (3) to be moved translationally into the lower position without friction against the plaster panels, while keeping the latter vertical prior to their subsequent removal.
- A device according to one of claims 11 and 12, characterised in that the fixed mould bottoms (2) have a peripheral leakproofing means (16) and the two mobile end panels (3) have leakproofing means (12) at the top of their external faces, relative to the corresponding internal side faces of the mobile frame (1), in such a way that the mobile panels (3) brought into the lower position and the mobile frame (1) brought into an adjusted intermediate position form with the bottoms (2) a leakproof vat of low height allowing plaster to be poured in in a liquid mixture without turbulence and debubbling of the mixture by vibrating means.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97402921T ATE215433T1 (en) | 1997-12-03 | 1997-12-03 | METHOD FOR PRODUCING THIN PLATES FROM A CASTABLE MATERIAL, IN PARTICULAR PLASTER, DEVICE FOR CARRYING OUT THE METHOD AND PRODUCT PRODUCED THEREFROM |
DK97402921T DK0922548T3 (en) | 1997-12-03 | 1997-12-03 | Process for casting thin sheets of a flowable material, especially gypsum, device for carrying out the method and product thus produced |
EP97402921A EP0922548B1 (en) | 1997-12-03 | 1997-12-03 | Process for moulding thin panels from castable material, in particular plaster, device for carrying out the process and obtained product |
DE69711644T DE69711644T2 (en) | 1997-12-03 | 1997-12-03 | Method for producing thin plates from a castable material, in particular gypsum, device for carrying out the method and product produced therewith |
PT97402921T PT922548E (en) | 1997-12-03 | 1997-12-03 | PROCESS OF MOLDING OF FINISHED PLATES OF MOLDABLE MATERIAL NAMELY STUCK DEVICE FOR ITS EXECUTION AND OBTAINED PRODUCT |
ES97402921T ES2175307T3 (en) | 1997-12-03 | 1997-12-03 | PROCEDURE FOR THE MOLDING OF FINE PLATES OF COLLABLE MATERIAL, MAINLY OF PLASTER, DEVICE FOR THEIR REALIZATION AND PRODUCT OBTAINED. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97402921A EP0922548B1 (en) | 1997-12-03 | 1997-12-03 | Process for moulding thin panels from castable material, in particular plaster, device for carrying out the process and obtained product |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0922548A1 EP0922548A1 (en) | 1999-06-16 |
EP0922548B1 true EP0922548B1 (en) | 2002-04-03 |
Family
ID=8229918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97402921A Expired - Lifetime EP0922548B1 (en) | 1997-12-03 | 1997-12-03 | Process for moulding thin panels from castable material, in particular plaster, device for carrying out the process and obtained product |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0922548B1 (en) |
AT (1) | ATE215433T1 (en) |
DE (1) | DE69711644T2 (en) |
DK (1) | DK0922548T3 (en) |
ES (1) | ES2175307T3 (en) |
PT (1) | PT922548E (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202015005762U1 (en) | 2015-08-13 | 2015-09-03 | Grenzebach Bsh Gmbh | Apparatus for the production of solid and hollow gypsum wall components in quick change |
DE102015010522A1 (en) | 2015-08-13 | 2017-02-16 | Grenzebach Bsh Gmbh | Apparatus and method for the production of solid and hollow gypsum wall elements in rapid change |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2513562A1 (en) * | 1981-09-29 | 1983-04-01 | Logistique Manutention Stockag | Mould for manufacture of plaster tiles - uses T=shape inserts sliding between parallel cruciform sections to form row of rectangular open mould cavities |
ATE59594T1 (en) * | 1984-05-15 | 1991-01-15 | Jost Ag | PLANT AND PROCESS FOR THE MANUFACTURE OF BUILDING PANELS FROM PLASTER. |
EP0610529B1 (en) * | 1993-02-10 | 1996-11-27 | Heinz Falk | Process and device for making exact-sized panel-shaped elements |
FR2750916B1 (en) * | 1996-07-09 | 2000-02-11 | Sarl Alpha Platre | MOLDING DEVICE FOR LOW THICKNESS GYPSUM PLATES |
-
1997
- 1997-12-03 DK DK97402921T patent/DK0922548T3/en active
- 1997-12-03 EP EP97402921A patent/EP0922548B1/en not_active Expired - Lifetime
- 1997-12-03 ES ES97402921T patent/ES2175307T3/en not_active Expired - Lifetime
- 1997-12-03 DE DE69711644T patent/DE69711644T2/en not_active Expired - Lifetime
- 1997-12-03 AT AT97402921T patent/ATE215433T1/en not_active IP Right Cessation
- 1997-12-03 PT PT97402921T patent/PT922548E/en unknown
Also Published As
Publication number | Publication date |
---|---|
PT922548E (en) | 2002-09-30 |
EP0922548A1 (en) | 1999-06-16 |
ES2175307T3 (en) | 2002-11-16 |
DE69711644D1 (en) | 2002-05-08 |
DE69711644T2 (en) | 2002-11-14 |
ATE215433T1 (en) | 2002-04-15 |
DK0922548T3 (en) | 2002-07-29 |
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