EP0024237A2 - Moulding press for concrete products comprising a concrete feed system - Google Patents

Moulding press for concrete products comprising a concrete feed system Download PDF

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Publication number
EP0024237A2
EP0024237A2 EP80401160A EP80401160A EP0024237A2 EP 0024237 A2 EP0024237 A2 EP 0024237A2 EP 80401160 A EP80401160 A EP 80401160A EP 80401160 A EP80401160 A EP 80401160A EP 0024237 A2 EP0024237 A2 EP 0024237A2
Authority
EP
European Patent Office
Prior art keywords
concrete
conveyor
mold
belt
scrapings
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.)
Ceased
Application number
EP80401160A
Other languages
German (de)
French (fr)
Other versions
EP0024237A3 (en
Inventor
Yves Henri Van De Caveye
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.)
Sodeem D'exploitation des Ets Minato Ste
Original Assignee
Sodeem D'exploitation des Ets Minato Ste
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 FR7920373A external-priority patent/FR2462983A1/en
Priority claimed from FR8014825A external-priority patent/FR2485983A2/en
Application filed by Sodeem D'exploitation des Ets Minato Ste filed Critical Sodeem D'exploitation des Ets Minato Ste
Publication of EP0024237A2 publication Critical patent/EP0024237A2/en
Publication of EP0024237A3 publication Critical patent/EP0024237A3/en
Ceased 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
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
    • B28B13/0255—Disposal of residual material, e.g. by means of the return stroke of the feed drawer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/116—Mold cleaning

Definitions

  • the invention generally relates to a press for molding concrete products, such as concrete blocks or the like, which in particular comprises an improved device for feeding concrete for molding these products.
  • Such presses for molding concrete products are well known in the prior art, and they generally comprise a vibrating table, a mold movable selectively in height by means of jacks, to be placed on the vibrating table and to be filled with concrete, a tamper, compacting the concrete in the mold and allowing the release of the products by lifting the mold, and a concrete feed device comprising a hopper associated with a filling drawer driven back and forth under the hopper for filling the mold.
  • This filling drawer used in the prior art poses a number of problems and is inconvenient to use. Indeed, the slide movement control cylinders are subjected to hydraulic reactions called water hammer during the use of the drawer, and the hydraulic control circuits suffer from it and see their life reduced. There are also sealing problems on the periphery of the drawer, relatively rapid wear of the drawer and the upper face of the mold, transmission of mechanical shocks producing significant noise, an obligation to frequently clean this filling drawer. It is also necessary, when changing the mold and using a mold of different height, to adjust the height position of the drawer correspondingly.
  • the object of the present invention is to avoid all these drawbacks, and for this it proposes a press for molding concrete products, comprising a vibrating table, a mold intended to be placed on the vibrating table and to be filled with concrete, a means for supplying concrete, such as a hopper, and means provided between this hopper and the mold for filling the latter with a predetermined quantity of concrete, characterized in that the means for filling the mold comprise a belt conveyor endless, disposed under the hopper and comprising means for driving the belt in a predetermined direction, and means for moving the conveyor as a whole in reciprocating rectilinear motion to pass the front end of the conveyor over the mold and bring it back to an initial position.
  • the conveyor is arranged at a fixed height in the press.
  • this press also comprises means for recycling the excess concrete after scraping from above the upper edge of the mold, and from the endless belt.
  • these recycling means comprise a chute for receiving concrete scrapings, and means, such as a worm, for bringing the scrapes collected in the chute towards the endless belt of the conveyor, in an area located immediately before the concrete feed hopper, so that the recycled concrete deposited on the strip is covered by the concrete coming from the feed hopper during the next mold filling cycle.
  • the vibrating conveyor corridor has two lateral guide walls and has a decreasing width in the direction of movement of the concrete scrapings, width which is maximum at its end adjacent to the mold and minimum at its end adjacent to the conveyor belt.
  • the conveyor belt is constituted by a first endless belt on which the concrete scrapings freely fall at the exit of the vibrating conveyor corridor, and by a second endless strip which then overlaps the first endless strip to trap the concrete scrapings during their transport to the endless strip of the mold filling conveyor located at a higher level of the press than the vibrating conveyor corridor.
  • the press which has been shown very diagrammatically in FIG. 1, comprises in known manner a vibrating table 10, which supports a wooden board 11 or any suitable material intended to receive the molded concrete product.
  • a mold 12 In the molding position, a mold 12 is lowered, by means of hydraulic jacks not shown, onto the board 11. At its upper part, the mold 12 comprises a flange 13 having the shape shown in the drawings.
  • a tamper 14 movable in vertical reciprocating rectilinear movement by means of hydraulic cylinders 15.
  • the tamper 14 In the mold filling position, the tamper 14 is raised above the mold, and also above the means for filling the concrete mold, which will be described in the following.
  • the concrete press feed means include a hopper 16, fixedly mounted on the chassis and intended to contain a certain amount of concrete.
  • the conveyor 17 With the hopper 16, there is provided a conveyor 17 with an endless belt 18.
  • the conveyor 17 essentially comprises a frame 19, carrying at its rear end a driving roller 20 for moving the endless belt, and at its front end a roller 21 mounted mad on which the strip 18 passes. It is understood that the rollers 20 and 21 make it possible to advance the upper strand of the endless strip 18 in the direction indicated by the arrow 22.
  • the chassis 19 of the conveyor 17 also includes, for example on its rear lower part, a rack 23 fixedly mounted on the chassis, and with which meshes a motor pinion 24 driven by any suitable means not shown.
  • the pinion system 24 - rack 23 makes it possible to move the conveyor 17 as a whole in reciprocating rectilinear movement in the two directions indicated by the arrows 25.
  • the conveyor In the position shown in solid lines in Figure 1, the conveyor is in its rear position, while in the position shown in dotted lines, it is in its most advanced position, an intermediate position being shown in phantom line.
  • the frame 19 of the conveyor 17 also supports two lateral guide walls 26 which extend longitudinally relative to the frame on either side of the upper strand of the endless belt 18 and which serve to delimit the width of the layer of concrete deposited by the hopper 16 on the upper part of the endless belt 18.
  • These lateral guide walls 26 also carry at their end a squeegee 27, which is intended to scrape the lower surface of the tamper 14, to clean it, when the latter is in the high position shown in the drawing.
  • a register 28 is also provided above the conveyor belt 18, for example being fixed on the front side of the hopper 16, to adjust the thickness of the concrete layer deposited on the belt 18.
  • the quantity of concrete which will be poured by the endless belt 18 into the mold 12 is determined on the one hand in lateral dimension and in height by the side walls 26 and by the register 28, and in longitudinal dimension by the speed of movement of the endless belt 18 around the rollers 20 and 21, and by the speed of movement of the conveyor 17 driven by the motor pinion 24 meshing with the rack 23.
  • the press shown in FIG. 1 also comprises means for cleaning the endless belt 18, and means for scraping the upper part 13 of the mold 12.
  • the means for cleaning the endless belt 18 include a squeegee 30, provided under the front roller 21, mounted at the end of a lever 31 articulated at an intermediate point on the chassis 19 and provided for example with a counterweight at its end free.
  • the scraping means of the upper edge 13 of the mold 12 comprise a squeegee 32 supported by a frame or arms 33.
  • the frame 33 and the squeegee 32 are moved in horizontal rectilinear movement by means of a jack 34 carried by the chassis of the machine, and pivoting in a vertical plane by means of a lifting cylinder 35.
  • the squeegee 32 and the frame 33 have been shown in their extreme front position. They can be brought back from the mold by means of the jack 34.
  • the jack 35 makes it possible to raise the squeegee 34 in its advancing movement, and then descends to let it rest on the edge 13 of the mold, during its return movement on the side of the cylinder 34.
  • the lifting cylinder 35 also makes it possible to adjust the height position of the squeegee 32, to adapt it to the different heights of mold used.
  • Such a device further comprises a chute 36 for receiving the concrete scrapings brought back by the squeegee 32, and also concrete scrapings removed from the endless strip 18 by the scraper 30. These concrete scrapings are guided in the trough 36 by an inclined plane 37.
  • the chute 36 is associated with means for recycling concrete scrapings, which for example comprise an endless screw, housed in a tubular housing 38 disposed obliquely between the chute 36 and the conveyor 17.
  • the chute 36 communicates with the lower part of the tube 38 by a conduit 39, while the upper part of the tube 38 is provided with a discharge conduit 40 making it possible to deposit the concrete scrapings brought back to the top of the tube 38 by the screw without end on the endless belt 18, immediately before the location of the hopper 16.
  • the concrete scrapings collected and deposited on the endless belt 18 are covered with fresh concrete coming from the hopper 16, during the following cycle filling a mold.
  • This arrangement allows an intimate mixture of fresh concrete and concrete scrapings, which would not necessarily be obtained if the concrete scrapings were brought directly into the hopper 160
  • the recycling device 100 consists of a vibrating conveyor corridor 101 and a conveyor belt 102 with endless belts.
  • the vibrating conveyor corridor 101 is constituted by a plate 103 of elongated shape bordered laterally by two guide walls 104. On each of the lateral sides of this conveyor corridor 101 is provided a vibrating device 105 known per se.
  • the end 106 of the plate extends over a width corresponding at least to the width of the mold 12, while its other end 107 extends over a lesser width corresponding substantially to the width of the conveyor belt 102.
  • the two lateral guide walls 104 of the plate are inclined relative to the longitudinal axis of this plate and arranged symmetrically relative to this axis.
  • This conveyor passage 101 is mounted in the press at an intermediate level between the level where the vibrating table 10 is located and the level where the conveyor 17 is located, by being mounted in an inclined plane with its widest end 106 located at a lower level relative to the level of its other end 107. More precisely, the end 106 of the plate 103 must be located at a level below the level reached by the upper surface of the smallest mold 12 capable of being used, to be sure that the scraped concrete falls in all cases, by gravity, on the plate 103. This end 106 of the plate 103 is adjacent or near immediate of the side wall of the mold 12 perpendicular to the conveyor 17 and adjacent to the latter when it is in its rear position shown in FIG. 1.
  • This particular arrangement of the conveyor corridor 101 is mainly due to the presence of the conveyor 108 which ensures the transport of the boards 11 to the vibrating table 10, conveyor 108 which is mounted parallel to the conveyor 17. Under these conditions, the vibrating conveyor corridor 101 is mounted in the space delimited by the two conveyors 17 and 108.
  • the conveyor belt 102 consists of two endless belts 110, 111.
  • the endless belt 111 is wound between two end rollers respectively lower 112 and upper 113. With respect to the rear position of the conveyor 17 as shown in FIG. 1, the rollers 112 and 113 are situated respectively below and above the conveyor 17.
  • the roller 112 is situated slightly beyond the roller 20 of the conveyor 17, in a direction opposite to the direction 22 of movement of the conveyor 17, while the roller 113 is located between the roller 20 of the conveyor 17 and the hopper 16.
  • the endless belt 111 passes over an intermediate roller 114 situated slightly above the conveyor 17 to allow the belt 111 to bypass the conveyor 17 when the latter is in its rear position.
  • the endless belt 111 passes over a succession of intermediate rollers 115 arranged substantially in an arc of a circle.
  • the endless strip 110 is wound between two end rollers respectively lower 116 and upper 117.
  • the roller 116 is located below the end 107 of the vibrating conveyor passage 101, so that the strip 110 receives scrapings of falling concrete by this end 107 of the vibrating conveyor passage 101.
  • the roller 117 is located above the roller 113 of the endless belt 111, between the auxiliary roller 114 and the upper roller 113 associated with the belt. without end 111.
  • the belt without end 110 passes from roller 116 to roller 117 by resting on roller 112 and the intermediate rollers 115 of the endless belt 111. Then the endless belt 110 is brought back from roller 117 to roller 116 by means of two auxiliary rollers 118, 119.
  • the two endless belts 110 and 111 respectively exterior and interior, are in contact with one another on a common path delimited by the roller 112, the intermediate rollers es 115 and the roller 117.
  • the axes of all the aforementioned rollers are mutually parallel and perpendicular to the direction of movement of the conveyor 17.
  • the surface of the endless strip 110 intended to receive the concrete scrapings may have successive cells or compartments 120 to ensure better transport of the concrete scrapings.
  • the press described operates as follows: when the conveyor 17 is in the position shown in solid lines in the drawings, and a mold 12 is lowered onto the vibrating table 10 while being pressed on the board 11, the tamper 14 being in the raised position shown in FIG. 1, it suffices to control the drive of the endless belt 18 in the direction indicated by the arrow 22 and to control the movement of the conveyor 17, by means of the pinion 24 and the rack 23, to advancing it into its extreme front position shown in dotted lines in FIG. 1.
  • the drive of the endless belt 18 in the direction of arrow 22 causes the concrete to spill over the entire surface of the mold, during the movement of the conveyor 17, as shown diagrammatically in FIG. 1.
  • the filling of the mold can be carried out either during the forward movement and the return movement of the conveyor 17, or only during the forward movement of the conveyor 17
  • the speed of movement of the endless belt 18 can be constant, or continuously variable, if desired. It is understood that the speed of the endless belt 18 and the speed of movement of the conveyor 17 are adjusted so that, when the endless belt 18 is stopped, and therefore the pouring of the concrete into the mold 12 is stopped, this is filled with a slight surplus of concrete.
  • the squeegee 32 When the filling of the mold is finished, the squeegee 32 is moved forward, above the mold, but without being in contact with it, by the cylinder 34, then by means of the cylinder 35, the descent of the squeegee 32 is controlled on the edge 13 of the mold, and the squeegee is returned to its rear position by means of the cylinder 34.
  • the scraped concrete then falls into the chute 36 , with the concrete which has been scraped off on the endless strip 18 by the scraper 30, and it is recycled by being brought back onto the endless strip 18 in the aforementioned manner by means of the endless screw housed in the tube 38.
  • the tamper 14 is lowered onto the mold 12, on the one hand to put the concrete at a constant height in the mold 12, and on the other hand to allow the molded product to be removed from the mold when the mold 12 is raised.
  • the tamper 14 is finally raised and returned to its initial position shown, after which the board 11 carrying the molded product is removed and replaced by a new board 11.
  • the continuous recycling device according to the second embodiment operates as follows ( Figures 3, 4).
  • the squeegee 32 which cooperates with the upper edge 13 of the mold, brings back the scraped concrete by dropping it on the vibrating conveyor passage 101 near its end 106 adjacent to the mold 12.
  • the vibrators 105 subject the vibrating corridor 101 to appropriate vibrations so as to transport the concrete scrapings from the end 106 to the end 107 of the corridor, the concrete scrapings going up the inclined plane formed by the plate 103 of the conveyor corridor 101. Then, the scrapings freely fall onto the endless belt 110 of the conveyor belt 102.
  • the endless belt 111 is superimposed on the belt 110 to trap the concrete scrapings and allow their transport to a higher level of the press in order to bring them back onto the endless belt 18 of the conveyor 17.
  • the concrete scraped by the scraper 30 associated with the endless belt 18 of the conveyor 17 is also continuously recycled by the same path, these scrapings falling directly onto the vibrating conveyor corridor 101.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

L'invention concerne une presse de moulage de produits en béton. La presse comprend un dispositif de remplissage de béton d'un moule (12), qui comporte un convoyeur (17) à bande sans fin (18), déplaçable en mouvement rectiligne alternatif au-dessus du moule au moyen d'une crémaillère (23) associée à un pignon moteur (24). L'invention permet de simplifier grandement les dispositifs d'alimentation en béton d'une presse de moulage de produits en béton.The invention relates to a press for molding concrete products. The press comprises a device for filling concrete with a mold (12), which comprises an endless belt conveyor (17) (18), movable in reciprocating rectilinear movement above the mold by means of a rack (23). ) associated with a motor pinion (24). The invention makes it possible to greatly simplify the concrete feed devices of a press for molding concrete products.

Description

L'invention concerne généralement une presse de moulage de produits en béton, tels que des parpaings ou analogues, qui comprend en particulier un dispositif perfectionné d'alimentation en béton pour le moulage de ces produits.The invention generally relates to a press for molding concrete products, such as concrete blocks or the like, which in particular comprises an improved device for feeding concrete for molding these products.

De telles presses de moulage de produits en béton sont bien connues dans la technique antérieure, et elles comprennent en général une table vibrante, un moule déplaçable sélectivement en hauteur au moyen de vérins, pour être déposé sur la table vibrante et être rempli de béton, un dameur, venant tasser le béton dans le moule et permettant le démoulage des produits par levage du moule, et un dispositif d'alimentation en béton comprenant une trémie associée à un tiroir de remplissage entraîné en va-et-vient sous la trémie pour le remplissage du moule.Such presses for molding concrete products are well known in the prior art, and they generally comprise a vibrating table, a mold movable selectively in height by means of jacks, to be placed on the vibrating table and to be filled with concrete, a tamper, compacting the concrete in the mold and allowing the release of the products by lifting the mold, and a concrete feed device comprising a hopper associated with a filling drawer driven back and forth under the hopper for filling the mold.

Ce tiroir de remplissage utilisé dans la technique antérieure pose un certain nombre de problèmes et est d'un emploi peu commode. En effet, les vérins de commande de déplacement du tiroir sont soumis à des réactions hydrauliques appelées coups de bélier au cours de l'utilisation du tiroir, et les circuits de commande hydraulique en souffrent et voient leur durée de vie réduite. On constate également des problèmes d'étanchéité sur le pourtour du tiroir, une usure relativement rapide du tiroir et de la face supérieure du moule, une transmission de chocs mécaniques produisant des bruits importants, une obligation de nettoyer fréquemment ce tiroir de remplissage. Il est d'autre part nécessaire, quand on change de moule et qu'on utilise un moule de hauteur différente, de régler la position en hauteur du tiroir de façon correspondante.This filling drawer used in the prior art poses a number of problems and is inconvenient to use. Indeed, the slide movement control cylinders are subjected to hydraulic reactions called water hammer during the use of the drawer, and the hydraulic control circuits suffer from it and see their life reduced. There are also sealing problems on the periphery of the drawer, relatively rapid wear of the drawer and the upper face of the mold, transmission of mechanical shocks producing significant noise, an obligation to frequently clean this filling drawer. It is also necessary, when changing the mold and using a mold of different height, to adjust the height position of the drawer correspondingly.

La présente invention a pour but d'éviter tous ces inconvénients, et elle propose pour cela une presse de moulage de produits en béton, comprenant une table vibrante, un moule destiné à être posé sur la table vibrante et à être rempli de béton, un moyen d'alimentation en béton, tel qu'une trémie, et des moyens prévus entre cette trémie et le moule pour remplir ce dernier d'une quantité prédéterminée de béton, caractérisée en ce que les moyens de remplissage du moule comprennent un convoyeur à bande sans fin, disposé sous la trémie et comprenant des moyens d'entraînement de la bande dans un sens prédéterminé, et des moyens pour déplacer le convoyeur dans son ensemble en mouvement rectiligne alternatif pour faire passer l'extrémité avant du convoyeur au-dessus du moule et la ramener dans une position initiale.The object of the present invention is to avoid all these drawbacks, and for this it proposes a press for molding concrete products, comprising a vibrating table, a mold intended to be placed on the vibrating table and to be filled with concrete, a means for supplying concrete, such as a hopper, and means provided between this hopper and the mold for filling the latter with a predetermined quantity of concrete, characterized in that the means for filling the mold comprise a belt conveyor endless, disposed under the hopper and comprising means for driving the belt in a predetermined direction, and means for moving the conveyor as a whole in reciprocating rectilinear motion to pass the front end of the conveyor over the mold and bring it back to an initial position.

Selon une autre caractéristique de l'invention, le convoyeur est agencé à une hauteur fixe dans la presse.According to another characteristic of the invention, the conveyor is arranged at a fixed height in the press.

On comprend facilement que le béton disposé sur la bande sans fin du convoyeur est amené par cette bande sans fin dans le moule quand elle se déplace, et qu'il n'est plus nécessaire de régler la hauteur de la bande ou du convoyeur en fonction de la hauteur du moule, le béton transporté par la bande tombant de lui-même dans le moule.It is easy to understand that the concrete placed on the endless belt of the conveyor is brought by this endless belt into the mold when it moves, and that it is no longer necessary to adjust the height of the belt or of the conveyor as a function from the height of the mold, the concrete transported by the strip falling by itself into the mold.

On comprend également qu'on évite ainsi tous les problèmes et les inconvénients qui étaient liés à l'utilisation d'un tiroir de remplissage.It is also understood that this avoids all the problems and drawbacks which were linked to the use of a filling drawer.

Selon une autre caractéristique de l'invention, cette presse comprend également des moyens de recyclage du béton excédentaire après raclage du dessus du bord supérieur du moule, et de la bande sans fin.According to another characteristic of the invention, this press also comprises means for recycling the excess concrete after scraping from above the upper edge of the mold, and from the endless belt.

Selon un premier mode de réalisation, ces moyens de recyclage comprennent une goulotte de réception des raclures de béton, et des moyens, tels qu'une vis sans fin, pour ramener les raclures rassemblées dans la goulotte vers la bande sans fin du convoyeur, dans une zone située immédiatement avant la trémie d'alimentation en béton, de telle sorte que le béton recyclé déposé sur la bande est recouvert par le béton venant de la trémie d'alimentation lors du cycle suivant de remplissage de moule.According to a first embodiment, these recycling means comprise a chute for receiving concrete scrapings, and means, such as a worm, for bringing the scrapes collected in the chute towards the endless belt of the conveyor, in an area located immediately before the concrete feed hopper, so that the recycled concrete deposited on the strip is covered by the concrete coming from the feed hopper during the next mold filling cycle.

Un tel dispositif de recyclage présente cependant des inconvénients inhérents à l'utilisation d'une vis sans fin. En effet, les raclures de béton sont amenées à se coincer entre la vis sans fin et le boîtier tubulaire dans lequel est logée cette vis sans fin. Autrement dit, un tel dispositif de recyclage n'est donc pas d'une grande efficacité et d'une grande fiabilité, notamment à cause des problèmes de frottement et de coincement engendrés au cours du déplacement des raclures de béton.However, such a recycling device has drawbacks inherent in the use of a worm. In fact, the concrete scrapings are caused to get caught between the worm and the tubular housing in which this worm is housed. In other words, such a device recycling is therefore not very efficient and reliable, in particular because of the friction and jamming problems generated during the movement of the concrete scrapings.

Le dispositif de recyclage conforme à un second mode de réalisation de l'invention vise à pallier les inconvénients du dispositif de recyclage à vis sans fin, en supprimant tout problème de coincement et de frottement entre les raclures de béton et les moyens servant à les transporter, et se caractérise par le fait qu'il est constitué :

  • - par un couloir transporteur vibrant qui réceptionne vers une de ses extrémités les raclures de béton et assure leur transport vers son autre extrémité opposée, et
  • - par un tapis transporteur à bandes sans fin qui réceptionne à son tour les raclures de béton pour les amener sur la bande sans fin du convoyeur de remplissage du moule, dans une zone située immédiatement avant la trémie d'alimentation en béton.
The recycling device according to a second embodiment of the invention aims to overcome the drawbacks of the worm recycling device, by eliminating any problem of jamming and friction between the concrete scrapings and the means used to transport them. , and is characterized by the fact that it is made up of:
  • - by a vibrating conveyor corridor which receives the concrete scrapings towards one of its ends and ensures their transport to its other opposite end, and
  • - by an endless belt conveyor belt which in turn receives the concrete scrapings to bring them onto the endless belt of the mold filling conveyor, in an area located immediately before the concrete feed hopper.

Selon une autre caractéristique de ce dispositif de recyclage, le couloir transporteur vibrant possède deux parois latérales de guidage et présente une largeur décroissante dans le sens de déplacement des raclures de béton, largueur qui est maximum à son extrémité adjacente au moule et minimum à son extrémité adjacente au tapis transporteur.According to another characteristic of this recycling device, the vibrating conveyor corridor has two lateral guide walls and has a decreasing width in the direction of movement of the concrete scrapings, width which is maximum at its end adjacent to the mold and minimum at its end adjacent to the conveyor belt.

Selon une autre caractéristique de ce dispositif de recyclage, le tapis transporteur est constitué par une première bande sans fin sur laquelle tombent librement les raclures de béton à la sortie du couloir transporteur vibrant, et par une deuxième bande sans fin qui vient ensuite en recouvrement sur la première bande sans fin pour emprisonner les raclures de béton pendant leur transport vers la bande sans fin du convoyeur de remplissage du moule situé à un niveau plus élevé de la presse que le couloir transporteur vibrant.According to another characteristic of this recycling device, the conveyor belt is constituted by a first endless belt on which the concrete scrapings freely fall at the exit of the vibrating conveyor corridor, and by a second endless strip which then overlaps the first endless strip to trap the concrete scrapings during their transport to the endless strip of the mold filling conveyor located at a higher level of the press than the vibrating conveyor corridor.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels :

  • La figure 1 est une vue schématique partielle d'une presse de remplissage comprenant un dispositif d'alimentation selon l'invetnion.
  • La figure 2 est une vue schématique partielle de cette même presse, qui comprend des moyens de recyclage des raclures de béton selon un premier mode de réalisation.
  • La figure 3 est une vue schématique partielle de cette même presse avec des moyens de recyclage des raclures de béton selon un second mode de réalisation, et
  • La figure 4 est une vue de dessus selon la flèche IV de la figure 3.
The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a embodiment of the invention and in which:
  • Figure 1 is a partial schematic view of a filling press comprising a feed device according to the invention.
  • Figure 2 is a partial schematic view of the same press, which comprises means for recycling concrete scrapings according to a first embodiment.
  • FIG. 3 is a partial schematic view of this same press with means for recycling concrete scrapings according to a second embodiment, and
  • FIG. 4 is a top view according to arrow IV of FIG. 3.

La presse, qui a été représentée très schématiquement en figure 1, comprend de façon connue une table vibrante 10, qui supporte une planche 11 en bois ou en matériau quelconque approprié destinée à recevoir le produit moulé en béton. Dans la position de moulage, un moule 12 est descendu, au moyen de vérins hydrauliques non représentés, sur la planche 11. A sa partie supérieure, le moule 12 comprend un rebord 13 ayant la forme représentée aux dessins.The press, which has been shown very diagrammatically in FIG. 1, comprises in known manner a vibrating table 10, which supports a wooden board 11 or any suitable material intended to receive the molded concrete product. In the molding position, a mold 12 is lowered, by means of hydraulic jacks not shown, onto the board 11. At its upper part, the mold 12 comprises a flange 13 having the shape shown in the drawings.

Au-dessus du moule est prévu un dameur 14, mobile en mouvement rectiligne alternatif vertical au moyen de vérins hydrauliques 15.Above the mold is provided a tamper 14, movable in vertical reciprocating rectilinear movement by means of hydraulic cylinders 15.

Dans la position de remplissage du moule, le dameur 14 est relevé au-dessus du moule, et également au-dessus des moyens de remplissage du moule en béton, qui vont être décrits dans ce qui suit.In the mold filling position, the tamper 14 is raised above the mold, and also above the means for filling the concrete mold, which will be described in the following.

Les moyens d'alimentation de la presse en béton comprennent une trémie 16, montée fixement sur le châssis et destinée à contenir une certaine quantité de béton.The concrete press feed means include a hopper 16, fixedly mounted on the chassis and intended to contain a certain amount of concrete.

Sous la trémie 16, est prévu un convoyeur 17 à bande sans fin 18. Le convoyeur 17 comprend essentiellement un châssis 19, portant à son extrémité arrière un rouleau moteur 20 pour le déplacement de la bande sans fin, et à son extrémité avant un rouleau 21 monté fou sur lequel passe la bande 18. On comprend que les rouleaux 20 et 21 permettent de faire avancer le brin supérieur de la bande sans fin 18 dans le sens indiqué par la flèche 22.Under the hopper 16, there is provided a conveyor 17 with an endless belt 18. The conveyor 17 essentially comprises a frame 19, carrying at its rear end a driving roller 20 for moving the endless belt, and at its front end a roller 21 mounted mad on which the strip 18 passes. It is understood that the rollers 20 and 21 make it possible to advance the upper strand of the endless strip 18 in the direction indicated by the arrow 22.

Le châssis 19 du convoyeur 17 comprend également, par exemple sur sa partie inférieure arrière, une crémaillère 23 montée fixement sur le châssis, et avec laquelle engrène un pignon moteur 24 entraîné par un moyen quelconque approprié non représenté. Le système pignon 24 - crémaillère 23 permet de déplacer le convoyeur 17 dans son ensemble en mouvement rectiligne alternatif dans les deux sens indiqués par les flèches 25.The chassis 19 of the conveyor 17 also includes, for example on its rear lower part, a rack 23 fixedly mounted on the chassis, and with which meshes a motor pinion 24 driven by any suitable means not shown. The pinion system 24 - rack 23 makes it possible to move the conveyor 17 as a whole in reciprocating rectilinear movement in the two directions indicated by the arrows 25.

Dans la position représentée en traits pleins sur la figure 1, le convoyeur est dans sa position arrière, tandis que dans la position représentée en traits pointillés, il est dans sa position la plus avancée, une position intermédiaire étant représentée en trait fantôme.In the position shown in solid lines in Figure 1, the conveyor is in its rear position, while in the position shown in dotted lines, it is in its most advanced position, an intermediate position being shown in phantom line.

Le châssis 19 du convoyeur 17 supporte également deux parois latérales de guidage 26, qui s'étendent longitudinalement par rapport au châssis de part et d'autre du brin supérieur de la bande sans fin 18 et qui servent à délimiter la largeur de la couche de béton déposée par la trémie 16 sur la partie supérieure de la bande sans fin 18.The frame 19 of the conveyor 17 also supports two lateral guide walls 26 which extend longitudinally relative to the frame on either side of the upper strand of the endless belt 18 and which serve to delimit the width of the layer of concrete deposited by the hopper 16 on the upper part of the endless belt 18.

Ces parois latérales de guidage 26 portent également à leur extrémité une raclette 27, qui est destinée à venir racler la surface inférieure du dameur 14, pour la nettoyer, quand celui-ci est en position haute représentée sur le dessin.These lateral guide walls 26 also carry at their end a squeegee 27, which is intended to scrape the lower surface of the tamper 14, to clean it, when the latter is in the high position shown in the drawing.

Un registre 28 est également prévu au-dessus de la bande transporteuse 18, en étant par exemple fixé sur le côté avant de la trémie 16, pour régler l'épaisseur de la couche de béton déposée sur la bande 18.A register 28 is also provided above the conveyor belt 18, for example being fixed on the front side of the hopper 16, to adjust the thickness of the concrete layer deposited on the belt 18.

On comprend que la quantité de béton qui sera déversée par la bande sans fin 18 dans le moule 12 est déterminée d'une part en dimension latérale et en hauteur par les parois latérales 26 et par le registre 28, et en dimension longitudinale par la vitesse de déplacement de la bande sans fin 18 autour des rouleaux 20 et 21, et par la vitesse de déplacement du convoyeur 17 entraîné par le pignon moteur 24 engrenant avec la crémaillère 23.It is understood that the quantity of concrete which will be poured by the endless belt 18 into the mold 12 is determined on the one hand in lateral dimension and in height by the side walls 26 and by the register 28, and in longitudinal dimension by the speed of movement of the endless belt 18 around the rollers 20 and 21, and by the speed of movement of the conveyor 17 driven by the motor pinion 24 meshing with the rack 23.

La presse représentée sur la figure 1 comprend encore des moyens de nettoyage de la bande sans fin 18, et des moyens de raclage de la partie supérieure 13 du moule 12.The press shown in FIG. 1 also comprises means for cleaning the endless belt 18, and means for scraping the upper part 13 of the mold 12.

Les moyens de nettoyage de la bande sans fin 18 comprennent une raclette 30, prévue sous le rouleau avant 21, montée en bout d'un levier 31 articulé en un point intermédiaire sur le châssis 19 et muni par exemple d'un contrepoids à son extrémité libre.The means for cleaning the endless belt 18 include a squeegee 30, provided under the front roller 21, mounted at the end of a lever 31 articulated at an intermediate point on the chassis 19 and provided for example with a counterweight at its end free.

Les moyens de raclage du bord supérieur 13 du moule 12 comprennent une raclette 32 supportée par un cadre ou des bras 33. Le cadre 33 et la raclette 32 sont déplacés en mouvement rectiligne horizontal au moyen d'un vérin 34 porté par le châssis de la machine, et en pivotement dans un plan vertical au moyen d'un vérin de relevage 35.The scraping means of the upper edge 13 of the mold 12 comprise a squeegee 32 supported by a frame or arms 33. The frame 33 and the squeegee 32 are moved in horizontal rectilinear movement by means of a jack 34 carried by the chassis of the machine, and pivoting in a vertical plane by means of a lifting cylinder 35.

Sur la figure 1, la raclette 32 et le cadre 33 ont été représentés dans leur position extrême avant. Ils peuvent être ramenés en arrière du moule au moyen du vérin 34. Le vérin 35 permet de soulever la raclette 34 dans son mouvement d'avancée, et redescend ensuite pour la laisser reposer sur le bord 13 du moule, pendant son mouvement de retour du côté du vérin 34. Le vérin 35 de relevage permet également de régler la position en hauteur de la raclette 32, pour l'adapter aux différentes hauteurs de moule utilisées.In Figure 1, the squeegee 32 and the frame 33 have been shown in their extreme front position. They can be brought back from the mold by means of the jack 34. The jack 35 makes it possible to raise the squeegee 34 in its advancing movement, and then descends to let it rest on the edge 13 of the mold, during its return movement on the side of the cylinder 34. The lifting cylinder 35 also makes it possible to adjust the height position of the squeegee 32, to adapt it to the different heights of mold used.

Un tel dispositif selon un premier mode de réalisation comprend encore une goulotte 36 de réception des raclures de béton ramenées par la raclette 32, et également des raclures de béton retirées de la bande sans fin 18 par la raclette 30. Ces raclures de béton sont guidées dans la goulotte 36 par un plan incliné 37.Such a device according to a first embodiment further comprises a chute 36 for receiving the concrete scrapings brought back by the squeegee 32, and also concrete scrapings removed from the endless strip 18 by the scraper 30. These concrete scrapings are guided in the trough 36 by an inclined plane 37.

Comme on le voit en figure 2, la goulotte 36 est associée à des moyens de recyclage des raclures de béton, qui comprennent par exemple une vis sans fin, logée dans un boîtier tubulaire 38 disposé en oblique entre la goulotte 36 et le convoyeur 17. La goulotte 36 communique avec la partie inférieure du tube 38 par un conduit 39, tandis que la partie supérieure du tube 38 est pourvue d'un conduit de déversement 40 permettant de déposer les raclures de béton ramenées en haut du tube 38 par la vis sans fin sur la bande sans fin 18, immédiatement avant l'emplacement de la trémie 16. De cette façon, les raclures de béton rassemblées et déposées sur la bande sans fin 18 sont recouvertes de béton frais venant de la trémie 16, lors du cycle suivant de remplissage d'un moule. Cette disposition permet un mélange intime du béton frais et des raclures de béton, que l'on n'obtiendrait pas nécessairement si les raclures de béton étaient ramenées directement dans la trémie 160As can be seen in FIG. 2, the chute 36 is associated with means for recycling concrete scrapings, which for example comprise an endless screw, housed in a tubular housing 38 disposed obliquely between the chute 36 and the conveyor 17. The chute 36 communicates with the lower part of the tube 38 by a conduit 39, while the upper part of the tube 38 is provided with a discharge conduit 40 making it possible to deposit the concrete scrapings brought back to the top of the tube 38 by the screw without end on the endless belt 18, immediately before the location of the hopper 16. In this way, the concrete scrapings collected and deposited on the endless belt 18 are covered with fresh concrete coming from the hopper 16, during the following cycle filling a mold. This arrangement allows an intimate mixture of fresh concrete and concrete scrapings, which would not necessarily be obtained if the concrete scrapings were brought directly into the hopper 160

En se reportant aux figures 3 et 4, le dispositif de recyclage 100 selon un second mode de réalisation de l'invention est constitué par un couloir transporteur vibrant 101 et par un tapis transporteur 102 à bandes sans fin.Referring to Figures 3 and 4, the recycling device 100 according to a second embodiment of the invention consists of a vibrating conveyor corridor 101 and a conveyor belt 102 with endless belts.

Le couloir transporteur vibrant 101 est constitué par un plateau 103 de forme allongée bordé latéralement par deux parois de guidage 104. Sur chacun des côtés latéraux de ce couloir transporteur 101 est prévu un dispositif vibreur 105 connu en soi.The vibrating conveyor corridor 101 is constituted by a plate 103 of elongated shape bordered laterally by two guide walls 104. On each of the lateral sides of this conveyor corridor 101 is provided a vibrating device 105 known per se.

L'extrémité 106 du plateau s'étend sur une largeur correspondant au moins à la largeur du moule 12, alors que son autre extrémité 107 s'étend sur une largeur moindre correspondant sensiblement à la largeur du tapis transporteur 102. Autrement dit, les deux parois latérales de guidage 104 du plateau sont inclinées par rapport à l'axe longitudinal de ce plateau et disposées symétriquement par rapport à cet axe.The end 106 of the plate extends over a width corresponding at least to the width of the mold 12, while its other end 107 extends over a lesser width corresponding substantially to the width of the conveyor belt 102. In other words, the two lateral guide walls 104 of the plate are inclined relative to the longitudinal axis of this plate and arranged symmetrically relative to this axis.

Ce couloir transporteur 101 est monté dans la presse à un niveau intermédiaire entre le niveau où se situe la table vibrante 10 et le niveau où se situe le convoyeur 17, en étant monté suivant un plan incliné avec son extrémité la plus large 106 située à un niveau inférieur par rapport au niveau de son autre extrémité 107. Plus précisément, l'extrémité 106 du plateau 103 doit se situer à un niveau inférieur au niveau atteint par la surface supérieure du plus petit moule 12 susceptible d'être utilisé, pour être sûr que le béton raclé tombe dans tous les cas, par gravité, sur le plateau 103. Cette extrémité 106 du plateau 103 est adjacente ou à proximité immédiate de la paroi latérale du moule 12 perpendiculaire au convoyeur 17 et adjacente à ce dernier lorsqu'il est dans sa position arrière représentée sur la figure 1.This conveyor passage 101 is mounted in the press at an intermediate level between the level where the vibrating table 10 is located and the level where the conveyor 17 is located, by being mounted in an inclined plane with its widest end 106 located at a lower level relative to the level of its other end 107. More precisely, the end 106 of the plate 103 must be located at a level below the level reached by the upper surface of the smallest mold 12 capable of being used, to be sure that the scraped concrete falls in all cases, by gravity, on the plate 103. This end 106 of the plate 103 is adjacent or near immediate of the side wall of the mold 12 perpendicular to the conveyor 17 and adjacent to the latter when it is in its rear position shown in FIG. 1.

Cette disposition particulière du couloir transporteur 101 est due principalement à la présence du convoyeur 108 qui assure le transport des planches 11 vers la table vibrante 10, convoyeur 108 qui est monté parallèlement au convoyeur 17. Dans ces conditions, le couloir transporteur vibrant 101 est monté dans l'espace délimité par les deux convoyeurs 17 et 108.This particular arrangement of the conveyor corridor 101 is mainly due to the presence of the conveyor 108 which ensures the transport of the boards 11 to the vibrating table 10, conveyor 108 which is mounted parallel to the conveyor 17. Under these conditions, the vibrating conveyor corridor 101 is mounted in the space delimited by the two conveyors 17 and 108.

Le tapis transporteur 102 est constitué par deux bandes sans fin 110, 111. La bande sans fin 111 est enroulée entre deux rouleaux extrêmes respectivement inférieur 112 et supérieur 113. Par rapport à la position arrière du convoyeur 17 telle que représentée sur la figure 1, les rouleaux 112 et 113 sont situés respectivement en dessous et au-dessus du convoyeur 17. Le rouleau 112 est situé légèrement au-delà du rouleau 20 du convoyeur 17, dans une direction opposée à la direction 22 de déplacement du convoyeur 17, alors que le rouleau 113 se situe entre le rouleau 20 du convoyeur 17 et la trémie 16. Pour passer du rouleau 112 au rouleau 113, la bande sans fin 111 passe sur un rouleau intermédiaire 114 situé légèrement au-dessus du convoyeur 17 pour permettre à la bande 111 de contourner le convoyeur 17 lorsque celui-ci est dans sa position arrière. Pour passer du rouleau 113 au rouleau 112, la bande sans fin 111 passe sur une succession de rouleaux intermédiaires 115 disposés sensiblement suivant un arc de cercle.The conveyor belt 102 consists of two endless belts 110, 111. The endless belt 111 is wound between two end rollers respectively lower 112 and upper 113. With respect to the rear position of the conveyor 17 as shown in FIG. 1, the rollers 112 and 113 are situated respectively below and above the conveyor 17. The roller 112 is situated slightly beyond the roller 20 of the conveyor 17, in a direction opposite to the direction 22 of movement of the conveyor 17, while the roller 113 is located between the roller 20 of the conveyor 17 and the hopper 16. To pass from the roller 112 to the roller 113, the endless belt 111 passes over an intermediate roller 114 situated slightly above the conveyor 17 to allow the belt 111 to bypass the conveyor 17 when the latter is in its rear position. To pass from the roller 113 to the roller 112, the endless belt 111 passes over a succession of intermediate rollers 115 arranged substantially in an arc of a circle.

La bande sans fin 110 est enroulée entre deux rouleaux extrêmes respectivement inférieur 116 et supérieur 117. Le rouleau 116 est situé en dessous de l'extrémité 107 du couloir transporteur vibrant 101, de manière à ce que la bande 110 reçoive les raclures de béton tombant par cette extrémité 107 du couloir transporteur vibrant 101. Le rouleau 117 est situé au-dessus du rouleau 113 de la bande sans fin 111, entre le rouleau auxiliaire 114 et le rouleau supérieur 113 associé à la bande.sans fin 111. La bande sans fin 110 passe du rouleau 116 au rouleau 117 en prenant appui sur le rouleau 112 et les rouleaux intermédiaires115 de la bande sans fin 111. Ensuite, la bande sans fin 110 est ramenée du rouleau 117 au rouleau 116 par l'intermédiaire de deux rouleaux auxiliaires 118, 119. Dans ces conditions, les deux bandes sans fin 110 et 111 respectivement extérieure et intérieure, sont en contact l'une avec l'autre sur un parcours commun délimité par le rouleau 112, les rouleaux intermédiaires 115 et le rouleau 117. Bien entendu, les axes de tous les rouleaux précités sont parallèles entre eux et perpendiculaires au sens de déplacement du convoyeur 17.The endless strip 110 is wound between two end rollers respectively lower 116 and upper 117. The roller 116 is located below the end 107 of the vibrating conveyor passage 101, so that the strip 110 receives scrapings of falling concrete by this end 107 of the vibrating conveyor passage 101. The roller 117 is located above the roller 113 of the endless belt 111, between the auxiliary roller 114 and the upper roller 113 associated with the belt. without end 111. The belt without end 110 passes from roller 116 to roller 117 by resting on roller 112 and the intermediate rollers 115 of the endless belt 111. Then the endless belt 110 is brought back from roller 117 to roller 116 by means of two auxiliary rollers 118, 119. Under these conditions, the two endless belts 110 and 111 respectively exterior and interior, are in contact with one another on a common path delimited by the roller 112, the intermediate rollers es 115 and the roller 117. Of course, the axes of all the aforementioned rollers are mutually parallel and perpendicular to the direction of movement of the conveyor 17.

En se reportant à la figure 4, la surface de la bande sans fin 110 destinée à recevoir les raclures de béton, peut présenter des alvéoles ou compartiments successifs 120 pour assurer un meilleur transport des raclures de béton.Referring to FIG. 4, the surface of the endless strip 110 intended to receive the concrete scrapings, may have successive cells or compartments 120 to ensure better transport of the concrete scrapings.

Pour moduler la hauteur de raclure de béton transporté par la bande sans fin 110, il peut être avantageusement prévue une raclette 121 disposée en travers de la bande sans fin 110 et légèrement au-delà de la zone de la bande sans fin 110 où tombent les raclures de béton.To adjust the scraper height of concrete transported by the endless belt 110, it is advantageously possible to provide a scraper 121 arranged across the endless belt 110 and slightly beyond the area of the endless belt 110 where the concrete scrapings fall.

La presse décrite fonctionne de la façon suivante : quand le convoyeur 17 est dans la position représentée en traits pleins dans les dessins, et qu'un moule 12 est descendu sur la table vibrante 10 en étant appuyé sur la planche 11, le dameur 14 étant en position relevée représentée en figure 1, il suffit de commander l'entraînement de la bande sans fin 18 dans le sens indiqué par la flèche 22 et de commander le déplacement du convoyeur 17, au moyen du pignon 24 et de la crémaillère 23, pour le faire avancer jusque dans sa position extrême avant représentée en pointillés en figure 1. L'entraînement de la bande sans fin 18 dans le sens de la flèche 22 provoque le déversement du béton sur toute la surface du moule, au cours du déplacement du convoyeur 17, comme cela est représenté schématiquement en figure 1. Le remplissage du moule peut s'effectuer soit pendant le mouvement avant et le mouvement de retour du convoyeur 17, soit uniquement pendant le mouvement vers l'avant du convoyeur 17. La vitesse de déplacement de la bande sans fin 18 peut être constante, ou continüment variable, si on le désire. On comprend que la vitesse de la bande sans fin 18 et la vitesse de déplacement du convoyeur 17 sont réglées de telle sorte que, quand on arrête la bande sans fin 18, et qu'on arrête donc le déversement du béton dans le moule 12, celui-ci est rempli avec un léger surplus de béton.The press described operates as follows: when the conveyor 17 is in the position shown in solid lines in the drawings, and a mold 12 is lowered onto the vibrating table 10 while being pressed on the board 11, the tamper 14 being in the raised position shown in FIG. 1, it suffices to control the drive of the endless belt 18 in the direction indicated by the arrow 22 and to control the movement of the conveyor 17, by means of the pinion 24 and the rack 23, to advancing it into its extreme front position shown in dotted lines in FIG. 1. The drive of the endless belt 18 in the direction of arrow 22 causes the concrete to spill over the entire surface of the mold, during the movement of the conveyor 17, as shown diagrammatically in FIG. 1. The filling of the mold can be carried out either during the forward movement and the return movement of the conveyor 17, or only during the forward movement of the conveyor 17 The speed of movement of the endless belt 18 can be constant, or continuously variable, if desired. It is understood that the speed of the endless belt 18 and the speed of movement of the conveyor 17 are adjusted so that, when the endless belt 18 is stopped, and therefore the pouring of the concrete into the mold 12 is stopped, this is filled with a slight surplus of concrete.

Lorsque le remplissage du moule est terminé, la raclette 32 est déplacée vers l'avant, au-dessus du moule, mais sans être en contact avec celui-ci, par le vérin 34, puis au moyen du vérin 35, on commande la descente de la raclette 32 sur le bord 13 du moule, et on ramène la raclette dans sa position arrière au moyen du vérin 34. Le béton raclé tombe alors dans la goulotte 36, avec le béton qui a été raclé sur la bande sans fin 18 par la raclette 30, et il est recyclé en étant ramené sur la bande sans fin 18 de la façon précitée au moyen de la vis sans fin logée dans le tube 38.When the filling of the mold is finished, the squeegee 32 is moved forward, above the mold, but without being in contact with it, by the cylinder 34, then by means of the cylinder 35, the descent of the squeegee 32 is controlled on the edge 13 of the mold, and the squeegee is returned to its rear position by means of the cylinder 34. The scraped concrete then falls into the chute 36 , with the concrete which has been scraped off on the endless strip 18 by the scraper 30, and it is recycled by being brought back onto the endless strip 18 in the aforementioned manner by means of the endless screw housed in the tube 38.

Après cela, le dameur 14 est descendu sur le moule 12, d'une part pour mettre le béton à une hauteur constante dans le moule 12, et d'autre part pour permettre le démoulage du produit moulé quand le moule 12 est relevé. Le dameur 14 est finalement relevé et ramené dans sa position initiale représentée, après quoi la planchette 11 portant le produit moulé est évacuée et remplacée par une nouvelle planchette 11.After that, the tamper 14 is lowered onto the mold 12, on the one hand to put the concrete at a constant height in the mold 12, and on the other hand to allow the molded product to be removed from the mold when the mold 12 is raised. The tamper 14 is finally raised and returned to its initial position shown, after which the board 11 carrying the molded product is removed and replaced by a new board 11.

Le dispositif de recyclage en continu conforme au deuxième mode de réalisation fonctionne de la façon suivante (figures 3, 4).The continuous recycling device according to the second embodiment operates as follows (Figures 3, 4).

Lorsque le remplissage du moule 12 est terminé, la raclette 32 qui coopère avec le bord supérieur 13 du moule, ramène le béton raclé en le faisant tomber sur le couloir transporteur vibrant 101 au voisinage de son extrémité 106 adjacente au moule 12. Les vibreurs 105 soumettent le couloir vibrant 101 à des vibrations appropriées de façon à transporter les raclures de béton de l'extrémité 106 à l'extrémité 107 du couloir, les raclures de béton remontant le plan incliné formé par le plateau 103 du couloir transporteur 101. Ensuite, les raclures tombent librement sur la bande sans fin 110 du tapis transporteur 102. Au voisinage du rouleau 112, la bande sans fin 111 vient se superposer à la bande 110 pour emprisonner les raclures de béton et permettre leur transport à un niveau supérieur de la presse afin de les ramener sur la bande sans fin 18 du convoyeur 17. Le béton raclé par la raclette 30 associée à la bande sans fin 18 du convoyeur 17 est également recyclé en continu par le même chemin, ces raclures tombant directement sur le couloir transporteur vibrant 101.When the filling of the mold 12 is finished, the squeegee 32 which cooperates with the upper edge 13 of the mold, brings back the scraped concrete by dropping it on the vibrating conveyor passage 101 near its end 106 adjacent to the mold 12. The vibrators 105 subject the vibrating corridor 101 to appropriate vibrations so as to transport the concrete scrapings from the end 106 to the end 107 of the corridor, the concrete scrapings going up the inclined plane formed by the plate 103 of the conveyor corridor 101. Then, the scrapings freely fall onto the endless belt 110 of the conveyor belt 102. In the vicinity of the roller 112, the endless belt 111 is superimposed on the belt 110 to trap the concrete scrapings and allow their transport to a higher level of the press in order to bring them back onto the endless belt 18 of the conveyor 17. The concrete scraped by the scraper 30 associated with the endless belt 18 of the conveyor 17 is also continuously recycled by the same path, these scrapings falling directly onto the vibrating conveyor corridor 101.

Il est évident que de nombreuses modifications peuvent être apportées aux modes de réalisation décrits et représentés, sans sortir du cadre de l'invention. De même, la commande de l'avance de la bande sans fin 18 et le déplacement du convoyeur 17 peuvent être réalisés par tout moyen approprié.It is obvious that many modifications can be made to the embodiments described and shown, without departing from the scope of the invention. Likewise, the control of the advance of the endless belt 18 and the movement of the conveyor 17 can be achieved by any suitable means.

On comprend également que l'un des avantages essentiels de l'invention réside dans la suppression du tiroir d'alimentation qui était auparavant utilisé dans la technique antérieure.It is also understood that one of the essential advantages of the invention resides in the elimination of the feed drawer which was previously used in the prior art.

Bien entendu, l'invention n'est nullement limitée aux modes de réalisation décrits et représentés qui n'ont été donnés qu'à titre d'exempleo En particulier, elle comprend tous les moyens constituant des équivalents techniques des moyens décrits, ainsi que leurs combinaisons, si celles-ci sont exécutées suivant son esprit et mises en oeuvre dans le cadre des revendications qui suivent.Of course, the invention is in no way limited to the embodiments described and shown which have been given only by way of example. In particular, it includes all the means constituting technical equivalents of the means described, as well as their combinations, if these are carried out according to the spirit and implemented within the framework of the claims which follow.

Claims (13)

1. Presse de moulage de produits en béton, comprenant une table vibrante, un moule destiné à être posé sur la table vibrante et à être rempli de béton, un moyen d'alimentation en béton, tel qu'une trémie et des moyens prévus entre cette trémie et le moule pour remplir le moule d'une quantité prédéterminée de béton, caractérisée en ce que les moyens de remplissage du moule comprennent un convoyeur à bande sans fin, disposé sous la trémie et comprenant des moyens d'entraînement de la bande dans un sens prédéterminé, et des moyens pour déplacer le convoyeur dans son ensemble en mouvement rectiligne alternatif pour faire passer l'extrémité avant de ce convoyeur au-dessus du moule et la ramener dans une position initiale.1. Press for molding concrete products, comprising a vibrating table, a mold intended to be placed on the vibrating table and to be filled with concrete, a concrete supply means, such as a hopper and means provided between this hopper and the mold for filling the mold with a predetermined quantity of concrete, characterized in that the mold filling means comprise an endless belt conveyor, disposed under the hopper and comprising means for driving the belt in a predetermined direction, and means for moving the conveyor as a whole in reciprocating rectilinear motion to pass the front end of this conveyor over the mold and bring it back to an initial position. 2. Presse selon la revendication 1, caractérisée en ce que le convoyeur est agencé à une hauteur fixe dans ladite presse.2. Press according to claim 1, characterized in that the conveyor is arranged at a fixed height in said press. 3. Presse selon la revendication 1 ou 2, caractérisée en ce que le convoyeur comprend un châssis de support de la bande, un rouleau moteur d'entraînement de la bande à une extrémité du châssis, un rouleau monté fou à l'autre extrémité du châssis, deux parois latérales de guidage s'étendant longitudinalement sur la partie supérieure du châssis de part et d'autre de la bande, les moyens précités pour déplacer le convoyeur au-dessus du moule comprenant par exemple une crémaillère fixée sur le châssis et un pignon moteur en prise avec la crémaillère.3. Press according to claim 1 or 2, characterized in that the conveyor comprises a belt support chassis, a drive roller for driving the belt at one end of the chassis, a roller mounted idly at the other end of the chassis, two lateral guide walls extending longitudinally on the upper part of the chassis on either side of the strip, the aforementioned means for moving the conveyor above the mold comprising for example a rack fixed on the chassis and a motor pinion engaged with the rack. 4. Presse selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend en outre des moyens de réglage de l'épaisseur de la couche de béton déposée sur la bande, ces moyens comprenant par exemple un registre fixe prévu à une certaine hauteur au-dessus de la bande.4. Press according to one of the preceding claims, characterized in that it further comprises means for adjusting the thickness of the layer of concrete deposited on the strip, these means comprising for example a fixed register provided at a certain height above the strip. 5. Presse selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend des moyens de réglage de la vitesse de la bande, celle-ci pouvant être constante lors du déplacement du convoyeur ou continûment variable.5. Press according to one of the preceding claims, characterized in that it comprises means for adjusting the speed of the belt, the latter being able to be constant during the movement of the conveyor or continuously variable. 6. Presse selon la revendication 3, caractérisée en ce que les parois latérales de guidage précitées portées par le châssis du convoyeur comprennent à une extrémité une raclette de nettoyage de la face inférieure d'un dameur destiné à être sélectivement descendu sur le béton remplissant le moule, pour la mise à hauteur constante du béton dans le moule, et pour le démoulage du produit en béton.6. Press according to claim 3, characterized in that the aforementioned lateral guide walls carried by the conveyor frame comprise at one end a squeegee for cleaning the underside of a tamper intended to be selectively lowered onto the concrete filling the mold, for placing concrete at constant height in the mold, and for demolding the concrete product. 7. Presse selon la revendication 3, caractérisée en ce que le châssis du convoyeur porte une raclette de nettoyage de la bande sans fin.7. Press according to claim 3, characterized in that the conveyor frame carries a wiper for cleaning the endless belt. 8. Presse selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend également une raclette de nettoyage du bord supérieur du moule, des moyens pour déplacer cette raclette en mouvement alternatif au-dessus du moule, et des moyens pour déplacer la raclette en pivotement dans un plan vertical en fonction des différentes hauteurs de moule.8. Press according to one of the preceding claims, characterized in that it also comprises a squeegee for cleaning the upper edge of the mold, means for moving this squeegee in reciprocating motion above the mold, and means for moving the squeegee pivoting in a vertical plane according to the different mold heights. 9. Presse selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend des moyens de recyclage du béton raclé sur la bande sans fin et du béton raclé sur le bord supérieur du moule.9. Press according to one of the preceding claims, characterized in that it comprises means for recycling concrete scraped on the endless belt and concrete scraped on the upper edge of the mold. 10. Presse selon la revendication 9, caractérisée en ce que les moyens comprennent une goulotte de réception des raclures de béton, et des moyens, tels qu'une vis sans fin, pour amener les raclures rassemblées dans la goulotte vers la bande sans fin du convoyeur, dans une zone située immédiatement avant la trémie d'alimentation en béton, de telle sorte que le béton recyclé déposé sur la bande est recouvert par le béton venant de la trémie d'alimentation lors du cycle suivant de remplissage de moule.10. Press according to claim 9, characterized in that the means comprise a chute for receiving concrete scrapings, and means, such as a worm, for bringing the scrapings collected in the chute towards the endless belt of the conveyor, in an area immediately before the concrete feed hopper, so that the recycled concrete deposited on the belt is covered by the concrete coming from the feed hopper during the next mold filling cycle. 11. Presse selon la revendication 9, caractérisée en ce que les moyens de recyclage sont constitués par un couloir transporteur vibrant qui réceptionne vers une de ses extrémités lesdites raclures de béton et assure leur transport vers son autre extrémité opposée, et par un tapis transporteur à bandes sans fin qui réceptionne à son tour lesdites raclures de béton pour les amener sur la bande sans fin du convoyeur de remplissage du moule, dans une zone située immédiatement avant la trémie d'alimentation en béton.11. Press according to claim 9, characterized in that the recycling means are constituted by a vibrating conveyor corridor which receives towards one of its ends said concrete scrapings and ensures their transport to its other opposite end, and by a conveyor belt to endless strips which in turn receives said concrete scrapings to bring them onto the endless strip of the mold filling conveyor, in an area located immediately before the concrete feed hopper. 12. Presse selon la revendication 11, caractérisée en ce que le couloir transporteur vibrant possède deux parois latérales de guidage et présente une largeur décroissante dans le sens de déplacement des raclures de béton, largeur maximum à son extrémité adjacente au moule et minimum à son extrémité adjacente au tapis transporteur.12. Press according to claim 11, characterized in that the vibrating conveyor corridor has two lateral guide walls and has a decreasing width in the direction of movement of the concrete scrapings, maximum width at its end adjacent to the mold and minimum at its end adjacent to the conveyor belt. 13. Presse selon la revendication 11 ou 12, caractérisée en ce que le tapis transporteur précité est constitué par une première bande sans fin sur laquelle tombent les raclures de béton précitées, et par une deuxième bande sans fin qui vient en recouvrement sur ladite première bande pour emprisonner lesdites raclures de béton pendant leur transport vers la bande sans fin du convoyeur précité situé à un niveau plus élevé de la presse que le niveau du couloir transporteur vibrant.13. Press according to claim 11 or 12, characterized in that the aforementioned conveyor belt is constituted by a first endless band on which fall the aforementioned concrete scrapings, and by a second endless band which overlaps said first band to trap said concrete scrapings during their transport to the endless belt of the aforementioned conveyor located at a higher level of the press than the level of the vibrating conveyor corridor.
EP80401160A 1979-08-09 1980-08-06 Moulding press for concrete products comprising a concrete feed system Ceased EP0024237A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7920373 1979-08-09
FR7920373A FR2462983A1 (en) 1979-08-09 1979-08-09 Mfr. of concrete building blocks - employs machine with endless belt conveyor and scrapers to clean ram and mould of excess concrete which is reused
FR8014825A FR2485983A2 (en) 1980-07-03 1980-07-03 Mfr. of concrete building blocks - employs machine with endless belt conveyor and scrapers to clean ram and mould of excess concrete which is reused
FR8014825 1980-07-03

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EP0024237A2 true EP0024237A2 (en) 1981-02-25
EP0024237A3 EP0024237A3 (en) 1981-07-15

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EP80401160A Ceased EP0024237A3 (en) 1979-08-09 1980-08-06 Moulding press for concrete products comprising a concrete feed system

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EP (1) EP0024237A3 (en)
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GB2143466A (en) * 1983-07-19 1985-02-13 Charcon Ltd Moulding apparatus
EP0197916A1 (en) * 1985-04-01 1986-10-15 Simmering-Graz-Pauker Aktiengesellschaft Feeding and removing device for a press, in particular a hydraulic column press
EP0300532A1 (en) 1987-07-08 1989-01-25 Koninklijke Mosa B.V. Ceramic flooring tile, set of mutually distinguishable flooring tiles, method for producing a set of flooring tiles and device for carrying out said method
EP0492733A1 (en) * 1990-12-28 1992-07-01 Koninklijke Mosa B.V. Device and method of manufacturing ceramic tiles
CN104161159A (en) * 2014-08-05 2014-11-26 天津大学 Automatic feeding and blade coating integrated device of chocolate chips
CN104891137A (en) * 2015-05-28 2015-09-09 湖州市千金宝云机械铸件有限公司 Block machine for construction
CN111251438A (en) * 2020-02-08 2020-06-09 杜文雅 Prefabricated component forming die

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US6488491B1 (en) * 1999-06-21 2002-12-03 Besser Company Apparatus for molding blocks having air knife cleansing system
US6425751B1 (en) * 1999-06-21 2002-07-30 Besser Company Apparatus for molding blocks
ITTV20020131A1 (en) * 2002-10-31 2004-05-01 Luca Toncelli DISPENSER OF STONE MIXTURES OR AGGLOMERATED CERAMIC FOR FILLING A MOLD
ITTV20040118A1 (en) * 2004-10-20 2005-01-20 Luca Toncelli EQUIPMENT FOR THIN LAYER DISTRIBUTION OF A MIXTURE BASED ON STONE OR AGGLOMERATE CERAMIC MATERIAL.
FR2883364B1 (en) * 2005-03-21 2007-09-28 Roland Vilmart METHOD FOR PROVIDING OPTIMAL HEAT EXCHANGE WITHIN AN ASSEMBLY COMPRISING A THERMALLY CONDUCTIVE ABSORBER PLATE AND A HEAT PUMP FLUID
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GB2143466A (en) * 1983-07-19 1985-02-13 Charcon Ltd Moulding apparatus
EP0197916A1 (en) * 1985-04-01 1986-10-15 Simmering-Graz-Pauker Aktiengesellschaft Feeding and removing device for a press, in particular a hydraulic column press
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EP0492733A1 (en) * 1990-12-28 1992-07-01 Koninklijke Mosa B.V. Device and method of manufacturing ceramic tiles
CN104161159A (en) * 2014-08-05 2014-11-26 天津大学 Automatic feeding and blade coating integrated device of chocolate chips
CN104891137A (en) * 2015-05-28 2015-09-09 湖州市千金宝云机械铸件有限公司 Block machine for construction
CN104891137B (en) * 2015-05-28 2017-03-01 温州大学 A kind of building block forming machine
CN111251438A (en) * 2020-02-08 2020-06-09 杜文雅 Prefabricated component forming die

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ES8103561A1 (en) 1981-03-16
ES494062A0 (en) 1981-03-16
US4321028A (en) 1982-03-23
EP0024237A3 (en) 1981-07-15

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