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
  • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
  • B28B7/0055—Mould pallets; Mould panels
• • 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
  • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
  • B28B15/005—Machines using pallets co-operating with a bottomless mould; Feeding or discharging means for pallets
• • 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
  • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B28B17/0063—Control arrangements
  • B28B17/0081—Process control
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
  • B30B11/005—Control arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
  • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
  • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations

Definitions

• the invention relates to the field of the production of concrete products immediate release, such as blocks, curbs, between you, cobblestones and the like.
• the invention relates more particularly to a device for controlling the operation of a vibrating press during the production process of such products and an installation comprising such a control device.
• the vibrating presses comprise a vibrating table supported by a vibrating device provided with elastic suspensions, a mold case movable vertically above the vibrating table, a compaction pylon vertically movable above the mold box and inside it and a drawer allowing pouring concrete from a hopper into the mold box.
• the deficiencies of the vibrating presses can be at the origin of defects on concrete products with immediate demolding.
• a defect of the pestle, a wear of the elastic suspensions of the vibrating table, a defect of inclination of the box of the mold, a heterogeneity of the movements of vibrations during the filling of the mold or the compaction of concrete are for example as many deficiencies being able cause defects in concrete blocks or the like.
• the checks carried out are limited to controlling the vibration. They include controls on the repeatability of the cycle and the quality of the vibration.
• the means for controlling the parameters of the vibrating press during a production cycle therefore remain insufficient or non-existent for certain parameters.
• a lack of horizontality found on the products the origin of which is a wear of the agitator of the drawer (part aiding the pouring of the concrete in the mold box), it will not be detected nor by vibration measurements (accelerometers) or motion sensors.
• the origin of the defect is a misalignment between the abutments of the sliders of the mold (and / or the pestle), no vibration fault will be noted.
• the invention aims to remedy these problems by providing a control device to diagnose simply and quickly a vibrating press during the production process of concrete products, without stopping the latter and accurately detect and the possible deficiencies of the latter.
• the invention provides a device for controlling the operation of a vibrating press during the production process of concrete products with immediate demolding, said vibrating press comprising a mold defining the least one cell in which the concrete to be compacted is poured, said control device being remarkable in that it comprises a board intended to be arranged under the mold, said board being provided with means for measuring the vibration frequency, amplitude and / or acceleration of movement, and / or force exerted on said board during the production of the concrete products.
• measuring means placed directly on an element involved in the production process, in this case the board, to control the vibrating press in real time, ie during the production of concrete products, and to diagnose, if necessary, the dysfunctions of the latter.
• the presence of measuring means on an element involved in the production process makes it possible to visualize phenomena hitherto not visualized with the control devices of the prior art such as the quality (weight and homogeneity of distribution) of the filling of the concrete in the mold.
• the measuring means are arranged to define at least three measurement points on the board. This ensures sufficient control of the operation of the vibrating press.
• the measuring means are integrated in the board.
• the measuring means are placed within the board itself. To do this, they are arranged either in cavities provided for this purpose, or directly embedded in the material in which the board is made.
• the measuring means are dynamic force sensors.
• Other measuring means known per se accelerelerometers, etc. can of course be implemented without departing from the scope of the invention.
• the board comprises means for communicating the data recorded by said measuring means to an acquisition unit and / or data processing. It can be expected that the unit is embedded on the board or that it is independent of the board.
• the board includes a storage module of the data recorded by the measuring means.
• the control device can provide an image at the instant (t) of an expected operating cycle of the machine, said image constituting a referential to which reference is made to deduce the origin of the defect as well as the product quality.
• the invention also relates to an installation for the production of immediate mold release concrete products comprising at least one vibrating press comprising a mold defining at least one cell in which the concrete to be compacted is poured, a compacting pylon of the concrete disposed above the mold and a vibrating table disposed under the mold, and a control device as described above, said control device for controlling production parameters of the vibrating press during the manufacturing process of concrete products when the board is in position on the vibrating table.
• the installation thus equipped with a control device according to the invention it is possible to control quickly, and without interruption of the production cycle, the state of several components of it.
• the device comprises means for recording the production parameters recorded during the manufacturing process of concrete products.
• the board is a transport board of pressed and compacted concrete products.
• FIG. 1 shows a schematic view of an installation for the production of products in concrete comprising a control device according to the invention
• FIG. 2 represents a schematic view in perspective and in transparency of the control device of FIG. 1 according to a first embodiment configuration
• FIG. 3 shows a sectional view along the axis III-III of the control device of Figure 2;
• FIG. 4 represents a schematic view from above of the control device of FIG. 2;
• FIG. 5 represents a schematic view from above of a control device according to another embodiment configuration
• FIG. 6 shows a production cycle of concrete products obtained with a control device of FIG. 2.
• an installation 1 comprising a vibrating press associated with a transfer line 8 of press boards for the production of concrete products immediate mold release.
• the vibrating press comprises two main stations: a concrete feed station 2 and a vibration and compacting station 3.
• the concrete feed station 2 comprises a hopper 20 disposed above the drawer 21 adapted to move horizontally between a concrete loading position from the hopper to a concrete pouring position in a mold 30 of the press.
• the opening of the hopper 20 allowing the flow of concrete on the drawer 21, is controlled by a jack 22 which actuates the tilting of the helmet 23 of the hopper 20 between an open position to a closed position.
• the vibration and compaction station 3 comprises a mold 30 defining cells in which the concrete to be compacted is discharged from the drawer 21, a compacting pylon 31 of the concrete disposed above the mold 30 and a vibrating table 32 placed under the mold.
• the mold 30 and compacting pestle 31 are respectively vertically movable.
• a board 4 is placed on the vibrating table 32, the mold 30 being positioned above the board.
• the vibrating press comprises an output (not shown) of the transfer line 8 which discharges the product or products) finished "concrete (s)".
• finished product is meant the demolded product.
• the "finished" product is transferred to the board on which it has been molded via, for example, an extension (not shown) of the conveyor belt 80.
• the installation 1 comprises a device 10 for controlling the operation of the vibrating press. As will be understood later, the control is performed during the production cycle of the products, a board being in position on the vibrating table.
• the control device 10 comprises the board 4 which, for this purpose, is instrumentalised. More particularly, the board 4 is provided with means 5 for measuring the vibration frequency, the amplitude and / or the acceleration of movement and / or the force exerted on said board during the production of the concrete products.
• the measuring means 5 are advantageously dynamic force sensors.
• the board 4 comprises five sensors 50 to 50E distributed regularly within it. More particularly, four of the sensors 50A, 50B, 50D and 50E are disposed at the periphery of the board, at the corners thereof, the fifth 50C being placed centrally.
• the sensors 50A, 50B, 50D and 50E are symmetrical with respect to the median planes. The advantage of a symmetrical and regular distribution is to make it possible to check the flatness of the board 4 on which the mold rests and thus to establish the possible cause for which the concrete product (s) obtained (s) would not be plan or present (in) t differences in height.
• the sensors 50A to 50E are connected by wire to a connector 6 constituting a data storage module identified by the sensors 50A to 50E.
• the connector 6 is connected to each sensor 50 A to 50E by internal channels 7 allowing the passage of son. It may also be provided that the son connecting the connector to the sensors pass in grooves provided for this purpose on the lower face 40 of the board 4.
• the control device 10 further comprises an acquisition unit and / or data processing (not shown) intended to be connected to the connector by wired or non-wired.
• the data recorded by the sensors 5 are thus transmitted via the connector 6 to the acquisition and / or data processing unit.
• the acquisition and / or data processing unit is distinct and independent of the board 4. According to another particularly advantageous embodiment, it can also be provided that the unit of acquisition and / or data processing is directly embedded on the board 4.
• FIG. 5 illustrates another embodiment in which the board has eight sensors 50A to 50H. As in the previous example, the sensors 50A to 50H are distributed so as to define a regular coverage of the board 4.
• the number of sensors 50A to 50H is of course not limited to the number illustrated in the embodiments shown in Figures 4 and 5. However, to ensure effective control of the operation of the vibrating press, the boards 4 will include at least three sensors (or any other means of measurement).
• the thus instrumentalized board allows, associated with a processing unit and / or acquisition to record data relating to the components of the vibrating press involved in the production of concrete products (mold, vibrating table, compacting pestle) . It makes it possible, for example, to establish the existence of horizontal defect of the compacting mold or pestle, to note a heterogeneity in the weight of the concrete when it is poured into the mold as well as for the application of vibrations to the mold. during the filling of the mold and / or the compaction of the concrete.
• FIG. 6 shows data taken by an instrumentalised plate 4 of the type illustrated in FIG. 2 during a concrete product manufacturing cycle for which it has been found, in release of press, a heterogeneity in the heights of products.
• the graph clearly shows the presence of a mold positioning defect. This defect is confirmed when clamping the mold on the board 4.
• the drawer 21 is in position and stirring begins.
• opposite responses are found between the left-hand sensors 50A and 50B and the right-hand sensors 50D and 50E, indicating a filling defect between the two sides of the board, the cells on the left of the mold being more filled than the right cells of the mold. Thanks to the data recorded by the instrumentalized plate 4 during the manufacturing cycle, the origin of the product height defect can thus be determined (mold horizontality defect) immediately, without stopping the installation.
• the use of the instrumentalized board 4 is not limited to the installation 1 illustrated in Figure 1, it can be implemented with any other type of vibrating press for the production of concrete products demoulding immediate.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Automation & Control Theory (AREA)
• Manufacturing & Machinery (AREA)
• Press-Shaping Or Shaping Using Conveyers (AREA)
• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
• Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=54329690

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (4)

Family Cites Families (6)

• 2015
  • 2015-06-26 FR FR1555959A patent/FR3037844B1/fr active Active
• 2016
  • 2016-06-27 EP EP16750888.6A patent/EP3313634B1/de active Active
  • 2016-06-27 HU HUE16750888A patent/HUE063149T2/hu unknown
  • 2016-06-27 PL PL16750888.6T patent/PL3313634T3/pl unknown
  • 2016-06-27 WO PCT/FR2016/051575 patent/WO2016207578A1/fr not_active Ceased
  • 2016-06-27 ES ES16750888T patent/ES2951889T3/es active Active
  • 2016-06-27 HR HRP20230785TT patent/HRP20230785T1/hr unknown

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