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EP0392593B1 - Vorrichtung zur selbsttätigen Korrektur der Pressdichte bei der Herstellung von Dachziegeln - Google Patents

Vorrichtung zur selbsttätigen Korrektur der Pressdichte bei der Herstellung von Dachziegeln Download PDF

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Publication number
EP0392593B1
EP0392593B1 EP90200795A EP90200795A EP0392593B1 EP 0392593 B1 EP0392593 B1 EP 0392593B1 EP 90200795 A EP90200795 A EP 90200795A EP 90200795 A EP90200795 A EP 90200795A EP 0392593 B1 EP0392593 B1 EP 0392593B1
Authority
EP
European Patent Office
Prior art keywords
mold
slide
clay
scrapers
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90200795A
Other languages
English (en)
French (fr)
Other versions
EP0392593A2 (de
EP0392593A3 (de
Inventor
Dietrich Engmann
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.)
IBERDITAN, S.L.
Original Assignee
IBERDITAN SL
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
Application filed by IBERDITAN SL filed Critical IBERDITAN SL
Publication of EP0392593A2 publication Critical patent/EP0392593A2/de
Publication of EP0392593A3 publication Critical patent/EP0392593A3/de
Application granted granted Critical
Publication of EP0392593B1 publication Critical patent/EP0392593B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface
    • 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
    • B28B17/0072—Product control or inspection

Definitions

  • the present invention refers to a system for automatic correction of the pressing density in the manufacture of tiles.
  • an object of the invention is attainment of automatic correction in pressing, the differences of density found in different areas of a ceramic tile, so that it is as uniform as possible.
  • the pressing of the granular or wet powder ceramic product is done in presses which are comprised of a mold holder bed, the mold being prolonged into a platform upon which a slidable slide related to some screens which fill up with wet granular clay, contained in a hopper, rests.
  • the feed slide moves forward with its screens full of granular material until it is over the mold, where it will be subsequently compacted once a scraper bar connected to the slide cleans the surface of the mold so that the clay is leveled with the mouth of the mold.
  • a device of this type is disclosed in DE-A-1.255.554.
  • This mold filling process is a dynamic process which is carried out at a high speed, since a press can operate at a rate of more than 20 pressings per minute. This means that the feed slide hardly has one second to effect its path forward to fill the mold and to return. When the granular material falls, this granular matter tends to fall horizontally forward and therefore falls according to the inertia of its mass in an inclined manner.
  • the scraper bar that removed the excess material from the mold, during the return of the slide is replaced by a support for a series of independent scrapers, whose height can be adjusted.
  • Each independent scraper is hung vertically and can move thus upon the slide moving back, those square portions of the piece that would have a qualitative and quantitative compacting defect have a larger amount of product placed in them.
  • the electronic control of the tester sends the information to the control of the slide so that the scrapers compensate for these defects, upon moving vertically during the return of the slide, occupying the highest position upon exceeding the squares of the mold where there would be the least compacting.
  • Figures 1 to 4. They schematically represent different stages of the mold filling process and subsequent pressing of the product for the forming of ceramic tiles, as is done at the present time.
  • Figure 5 It is a schematic plan view of the slide of the press which holds the independent scrapers and whose height can be adjusted. With them the automatic correction of the pressing density is obtained.
  • Figure 6. It is a longitudinal raised view of what has been shown in figure 5.
  • Figure 7 It shows in rectangular coordinates the curve that represents the density values of the piece in the different squares into which the tile has been divided, longitudinally to the movement of the slide.
  • a single press can therefore include an aligned series of bottom plates 5, top plates 11 and screens 9 which are capable of being confronted so that they simultaneously form a repeated series of tiles 12, once the material which descends the transversal support 10 has been compacted.
  • the feed slide 7 moves forward with its screens 9 full of wet granular material, until this screen is over the bottom plate 5.
  • the bottom plate 5 moves downward to form a chamber that is to be filled with granular material 13 which falls by gravity and is drawn by the vacuum that the descent of the bottom plate 5 causes, as is clearly observed in figure 2.
  • the slide 7 returns and since it has a scraper bar 14 it cleans the surface of the mold 4 leaving only the clay contained in it, leveling with the top edge of the mold.
  • the transversal support 10 of the press descends and the top plate 11 is inserted in the recess of the mold 4 in order to compress the granular material 13 and convert it into a tile 12.
  • an already pressed piece such as a square tile referred to as 15 in figure 5, it is cut into a certain number of equal parts, following longitudinal and transversals alignments.
  • the number of parts into which the tile 15 is divided is sixteen, forming a square of four by four individual portions, each one of which has been referred to as no. 16.
  • the ceramic piece 15 is ideally divided into this same number of portions 16, each one of which has to have the same density. Therefore it has means that can make it vary during the return stage of the feed slide 7, which we specify in detail hereinafter.
  • the bar 14 remains situated above the mold 4 so that it does not act as a scraper.
  • the independent scrapers 2 coincide in their width and position with the theoretical separation of piece 15 longitudinally, in other words, the end scrapers sweep the end longitudinal bands of piece 15 divided into sixteen portions, while the intermediate scrapers 2 sweep the respective center bands of piece 15 or recess of the mold 4.
  • Each scraper 2 can move vertically with its corresponding cylinder head 17 that contains a valvular system and hydraulic piston for movement thereof, not represented in the figures as they are already known.
  • the slide 7 In order to locate when the slide 7 has its scrapers 2 over the transversal lines 22 of separation of the portions 16 of the tile 15, it has a detector of the ⁇ angle corresponding to each one of these positions.
  • the length of the independent scrapers 2 defines the longitudinal readings or those of the distance between the longitudinal lines 23 of the square of the tile 15.
  • Each cylinder head 17 contains a distance detector in order to also know the individual vertical position of each scraper, this position being automatically selected by the electronic control of the apparatus.
  • the corresponding scraper 2 will move vertically each time that the slide moves backward after having filled the mold 4, as is indicated in the curve 24 of this figure 7, rising in the squares with a density less than the stipulated one and descending in the ones with a greater density, proportionally.
  • portion 16 located on the left, taken as "zero" is the one with the greatest density and remains situated over the abscissa axis.

Landscapes

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

Claims (3)

  1. Vorrichtung zur automatischen Korrektur der Preßdichte bei der Herstellung von Fliesen (15) vor dem Preßvorgang durch Anpassen der Menge des Gemenges in verschiedenen Feldern einer Form (4), mit einer Form (4) für die Aufnahme des körnigen oder feuchten Gemenges, einem horizontalen Füllschieber (7), der eine Öffnung (13) aufweist, die das Gemenge von einer Füllvorrichtung übernimmt und beim Gleiten über die Form (4) in diese übergibt, wobei der Füllschieber (7) außerdem Abstreifmittel zum Einebnen der Oberfläche des Gemenges in der Form aufweist, sowie mit Mitteln zum Feststellen der Menge des in jedem Feld der Form (4) vorhandenen Gemenges, einer Dichtemeßvorrichtung und Detektormitteln zum Feststellen der relativen Stellung des Schiebers (7) und der mit diesem verbundenen Mittel zum Abstreifen, dadurch gekennzeichnet, daß die Mittel zum Abstreifen aus mehreren unabhängigen Abstreifern (2) bestehen, die Längsfelder der Form (4) überstreichen, wobei die Detektormittel die Stellung jedes Abstreifers über Querlinien (22) feststellen, die die Form in gleiche Felder unterteilen, und jeder Abstreifer (2) in der Höhe unabhängig einstellbar ist in Abhängigkeit von der Menge des Gemenges, die zum Anpassen der Menge des Gemenges in der Form (4) in den verschiedenen Feldern der Form erforderlich ist.
  2. Vorrichtung nach anspruch 1, dadurch gekennzeichnet, daß jeder unabhängige Abstreifer (2) in vertikaler Richtung einstellbar ist und einen ein Ventil und einen hydraulischen Kolben aufweisenden Zylinderkopf (17) für seine elektronische Höheneinstellung und einen Abstandsdetektor umfaßt, durch den die vertikale Stellung des entsprechenden Abstreifers (2) erkannt wird, und daß die Mittel zum Feststellen der Positionen der Abstreifer (2) in Längsrichtung Detektormittel umfassen, die den zwischen einem die Vorwärts- und Rückwärtsbewegung des Schiebers (7) übertragenden Arm (19) und einer Achse des Schiebers (7) feststellen.
  3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Dichtemessvorrichtung eine elektronische Kontrollschaltung umfaßt, die den Regelungsmitteln für den Schieber (7) die nötigen Informationen liefert, damit die Abstreifer (2) die in den verschiedenen quadratischen Feldern (1), in die ein Stück oder eine Fliese (15) unterteilt ist, festgestellten Fehlmengen ausgleichen.
EP90200795A 1989-04-12 1990-04-03 Vorrichtung zur selbsttätigen Korrektur der Pressdichte bei der Herstellung von Dachziegeln Expired - Lifetime EP0392593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES8901280 1989-04-12
ES8901280A ES2013172A6 (es) 1989-04-12 1989-04-12 Sistema de correccion automatica de la densidad de prensado, en la fabricacion de azulejos.

Publications (3)

Publication Number Publication Date
EP0392593A2 EP0392593A2 (de) 1990-10-17
EP0392593A3 EP0392593A3 (de) 1991-09-18
EP0392593B1 true EP0392593B1 (de) 1994-08-31

Family

ID=8261439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90200795A Expired - Lifetime EP0392593B1 (de) 1989-04-12 1990-04-03 Vorrichtung zur selbsttätigen Korrektur der Pressdichte bei der Herstellung von Dachziegeln

Country Status (4)

Country Link
EP (1) EP0392593B1 (de)
AT (1) ATE110618T1 (de)
DE (1) DE69011924T2 (de)
ES (1) ES2013172A6 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217199C1 (de) * 2002-04-18 2003-09-04 Dietrich Engmann Vorrichtung zur automatischen Korrektur der Dichte von keramischen Fliesen-Rohlingen

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2046114B1 (es) * 1992-05-08 1995-08-01 Iberditan Sa Sistema de control automatico de compactacion en prensas.
IT1262344B (it) * 1993-12-21 1996-06-19 Mass Spa Metodo e impianto per la formatura di piastrelle a compattazione e spessore uniformi, e piastrelle cosi' ottenute.
DE4419960C2 (de) 1994-06-08 1997-08-07 Dietrich Engmann Vorrichtung zum Messen der Auftriebskraft einer plattenförmigen keramischen Probe in Quecksilber
ES2125799B1 (es) * 1996-03-14 1999-08-01 Pesudo Arquimedes V Bono Dispositivo electronico para compensar la carga de arcillas en los moldes.
EP1510311A1 (de) * 2003-08-23 2005-03-02 Euroditan S.L. Verfahren zur Herstellung keramischer Fliesen
WO2005068143A1 (fr) * 2003-10-29 2005-07-28 Jimian Chen Equipement de distribution de materiau a tuyaux multiples pour le compactage de tuiles et procede de distribution
US9783766B2 (en) 2015-04-03 2017-10-10 Ecolab Usa Inc. Enhanced peroxygen stability using anionic surfactant in TAED-containing peroxygen solid
US10280386B2 (en) 2015-04-03 2019-05-07 Ecolab Usa Inc. Enhanced peroxygen stability in multi-dispense TAED-containing peroxygen solid
CA3094073A1 (en) 2018-03-19 2019-09-26 Ecolab Usa Inc. Liquid detergent compositions containing bleach catalyst
IT201800003939A1 (it) * 2018-03-26 2019-09-26 System Ceramics S P A Metodo per la pressatura di lastre ceramiche
EP4349951A3 (de) 2018-06-15 2024-06-19 Ecolab USA Inc. Verbesserte persauerstoffstabilität unter verwendung von fettsäure in einem persauerstofffeststoff enthaltenden bleichaktivator
CN118219406B (zh) * 2024-05-22 2024-09-20 佛山东海诺德科技有限公司 一种密度调节装置及数码喷粉布料设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184818A (en) * 1953-10-19 1965-05-25 Eugene E Crile Automatic mix regulating devices for cement block molding machines
DE1255554B (de) * 1963-10-16 1967-11-30 Dorst Keramikmasch Verfahren zum Pressen von Wand-, Fussboden-oder Mosaikplatten mit zueinander planparallelen Ober- und Unterseiten aus pulverfoermigem, insbesondere keramischem Material, und Presse zum Durchfuehren des Verfahrens
DE2605514B2 (de) * 1976-02-12 1978-09-14 Dorstener Maschinenfabrik Ag, 4270 Dorsten Pressenanlage zum Herstellen konischer Steine
GB2143467B (en) * 1983-07-19 1987-04-15 Charcon Ltd Moulding apparatus
EP0161323A1 (de) * 1984-04-16 1985-11-21 Bison-Werke Bähre & Greten GmbH & Co. KG Verfahren und Vorrichtung zur Erzielung einer vorgebbaren Flächengewichtsverteilung in einem Vlies
AT382556B (de) * 1985-04-01 1987-03-10 Simmering Graz Pauker Ag Beschickungs- und austrageeinrichtung fuer eine presse, insbesondere hydraulische saeulenpresse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217199C1 (de) * 2002-04-18 2003-09-04 Dietrich Engmann Vorrichtung zur automatischen Korrektur der Dichte von keramischen Fliesen-Rohlingen

Also Published As

Publication number Publication date
DE69011924T2 (de) 1995-04-13
ATE110618T1 (de) 1994-09-15
EP0392593A2 (de) 1990-10-17
EP0392593A3 (de) 1991-09-18
ES2013172A6 (es) 1990-04-16
DE69011924D1 (de) 1994-10-06

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