EP1669178B1 - Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten - Google Patents

Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten Download PDF

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Publication number
EP1669178B1
EP1669178B1 EP05077754.9A EP05077754A EP1669178B1 EP 1669178 B1 EP1669178 B1 EP 1669178B1 EP 05077754 A EP05077754 A EP 05077754A EP 1669178 B1 EP1669178 B1 EP 1669178B1
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EP
European Patent Office
Prior art keywords
plant
belts
strip
actuation device
tension
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.)
Active
Application number
EP05077754.9A
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English (en)
French (fr)
Other versions
EP1669178A2 (de
EP1669178A3 (de
Inventor
Alessandro Cocquio.
Silivano Valli
Alan Babini
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.)
Sacmi Imola SC
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Sacmi Imola SC
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Publication date
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Priority to PL05077754T priority Critical patent/PL1669178T3/pl
Publication of EP1669178A2 publication Critical patent/EP1669178A2/de
Publication of EP1669178A3 publication Critical patent/EP1669178A3/de
Application granted granted Critical
Publication of EP1669178B1 publication Critical patent/EP1669178B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • 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
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/123—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material in moulds or on moulding surfaces moving continuously underneath or between the rollers, e.g. on an endless belt

Definitions

  • the present invention concerns, in general, a plant for manufacturing ceramic tiles or slabs, and in particular a plant for forming the aforementioned slabs.
  • Plants for forming ceramic slabs comprise a conveyor belt suitable for making a continuous strip of powdered ceramic material advance through a pressing station, which is equipped with compacting means that allow the powders to be continuously pressed on the belt that advances in the station, to obtain an article of coherent material.
  • the compacting means generally comprise a pair of sliding belts, on top of and facing one another, one of which is arranged below the conveyor belt, and the other above it.
  • Said belts are wound on a respective motorised drive roller and a respective idler roller, and they are kept pressed against the strip of powdered material through a pair of opposite pressing rollers, the first of which is arranged above the top belt and the second below the bottom belt, said pressing rollers defining the compacting area of the strip of powders.
  • Forming plants of this type are generally inserted inside a production line that comprises other operating stations, like for example: a cutting station, where the compacted article is trimmed at the edges and divided into tesserae; a decorating station; and a station suitable for subjecting the tesserae to a second pressing.
  • a cutting station where the compacted article is trimmed at the edges and divided into tesserae
  • a decorating station and a station suitable for subjecting the tesserae to a second pressing.
  • a particularly serious drawback of known forming plants lies in the fact that in such circumstances, i.e. when said forming plants are shut down, a non-negligible portion of the strip of compacted material is irrevocably damaged and, consequently, must be discarded.
  • the variation in tension in said portion of the belts causes, in the first case, an elastic shortening and, in the second case, an elastic stretching thereof, said stretching and shortening determining a consequent sliding of the belts on the strip of compacted material that produces cracks and splits in it.
  • the production lines are equipped with storage devices suitable for stocking the strip of compacted material produced by the forming plant that continues to work even when the line has stopped downstream of it; however, in many circumstances said devices can do no more than delay the inevitable stopping of the plant and, therefore, do not solve the problem effectively.
  • the purpose of the present invention is that of allowing the forming plants to shut down without compromising its production continuity, i.e. avoiding the strip of compacted powders being damaged.
  • the drive rollers are indeed generally engaged in rotation through an actuation device (e.g. an electric motor) that, when switched off, makes the roller themselves idle and free to rotate in the retrograde sense helping the shortening of the belts, which tend to spontaneously go back into non-deformed configuration.
  • an actuation device e.g. an electric motor
  • the drive rollers are prevented from rotating after the actuation device has been switched off and, therefore the belts are prevented from immediately cancelling the stretching during operation and, therefore from sliding on the article of compacted ceramic powders, damaging it.
  • each drive roller has a mechanical brake associated with it, for example a shoe brake, which acts on the transmission shaft that connects the drive roller itself to the actuation device.
  • a mechanical brake associated with it, for example a shoe brake, which acts on the transmission shaft that connects the drive roller itself to the actuation device.
  • the locking devices instead comprise an electronic system suitable for controlling the aforementioned actuation device, so that when the forming plant stops it exerts a constant torque on the drive rollers such as to balance the elastic force of the belts keeping them still and, at the same time, taut.
  • the plant 1 which comprises a motorised conveyor belt 2 on which, through normal devices, not illustrated since they are per se known, a continuous strip 100 of powders is deposited.
  • the belt 2 crosses a pressing station 3 that has the function of pressing the powders of the strip 100 to obtain an article, substantially parallelepiped in shape, of coherent material.
  • Such an article can possibly then be decorated and then divided into tesserae of suitable size according to the size of end product that one wishes to obtain, said tesserae being able to be subjected to a second pressing step.
  • the pressing station 3 comprises two compacting devices 4 and 5, motorised and one on top of another, the first of which is arranged below the belt 2, and the second above it at a height from the belt 2 that can be adjusted according to the thickness of the strip 100 of powders to be compacted, as well as the pressure value at which one wishes to carry out the pressing.
  • Each of the compactors 4 and 5 is provided with a motorised drive roller and an idle roller, respectively indicated with reference numerals 40, 41 and 50, 51, on which a respective belt 42, 52 is wound.
  • Each drive roller 40 and 50 is engaged in rotation by a respective transmission shaft (not shown) that receives the motion from an actuation device, which can indifferently comprise two independent motors or a single motor for both of the drive rollers.
  • roller conveyor 43 and 53 is arranged, consisting of a plurality of idle rollers that have the function of keeping the belts 42 and 52 pressed to press the strip 100 of powdered material.
  • the roller conveyor 53 is inclined in the direction in which the belt 2 advances so as to make the compacting of the powders of the strip 100 gradual.
  • rollers 6 and 7 Downstream of the roller conveyors 43 and 53 there are two opposite rollers 6 and 7, of which the roller 6 is arranged below the belt 42 whereas the roller 7 is arranged above the belt 52, and presses it against the strip 100 of powders that advance on the belt 2.
  • the rollers 6 and 7 define the pressing area of the strip 100 of powders, downstream of which there is a decompression area in which the strip of powders expands, thanks to suitable means, in a controlled manner to avoid the occurrence of cracks or splits in the compacted article.
  • said decompression area comprises two overlapping plates 16 and 17, the bottom one of which 17 is arranged below the belt 2 and the top one of which 16 is arranged above the belt 2, both in contact with the belts 42 and 52.
  • each drive roller 40 and 50 has a locking device associated with it, 44 and 54 respectively, which, acting on the rollers 40 and 50 or else on the transmission shaft (not shown) that connects them to the actuation device, is suitable for preventing any rotation of said rollers when the plant 1 is stopped.
  • each of said locking devices comprises a brake shoe, 45 and 55, associated with a jack, 46 and 56, which is suitable for pressing said brake shoe against the drive roller or against its transmission shaft.
  • the locking means 44 and 54 are inactive and only starting working when the actuation device is deactivated and the drive rollers 40 and 50 stop; in this way the belts, 42 and 52, in the portion between the drive rollers 40 and 50 and the compacting area remain taut and cannot elastically shorten.
  • the actuation device of the drive rollers 40 and 50 is once again activated, however the locking devices 44 and 54 continue to act until the torque applied to the drive rollers 40 and 50 is such as to avoid harmful sliding of the belts 42 and 52 on the strip 100 of compacted material. It is foreseen that said locking devices 44 and 54 deactivate when the torque applied to the drive rollers 40 and 50 is such as to subject the belts to a tension of over 90% the normal operating tension.

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)
  • Producing Shaped Articles From Materials (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Structure Of Belt Conveyors (AREA)

Claims (6)

  1. System zum Bilden von Keramikkacheln oder -fliesen, von einem durchgehenden Streifen (100) pulverförmigen Keramikmaterials ausgeht, wobei das System ferner eine Anlage (1) umfasst, die mit einem Förderband (2) ausgestattet ist, auf welchem der durchgehende Streifen (100) pulverförmigen Keramikmaterials erzeugt wird, und mit Verdichtungsmitteln, die dafür geeignet sind, den Pulverstreifen (100) auf dem Band (2) einem kontinuierlichen Pressen zu unterziehen, wobei die Verdichtungsmittel mindestens ein Paar Gleitbänder (42, 52) umfassen, die übereinander angeordnet, einander zugewandt und jeweils teilweise um mindestens eine motorisierte Antriebswalze (40, 50) gewunden sind,
    dadurch gekennzeichnet, dass es Mittel (44, 54) umfasst zum Arretieren der Antriebswalzen (40, 50) und zum Ausüben einer Spannung auf die Bänder, wenn die Anlage (1) außer Betrieb geht, so dass die entsprechenden Bänder (42, 52) zu über 90 % der Spannung, der sie während des Betriebes der Anlage (1) ausgesetzt sind, unter Spannung bleiben.
  2. System nach Anspruch 1, dadurch gekennzeichnet, dass jede Antriebswalze (40, 50) mindestens eine ihr zugeordnete mechanische Bremse (44, 45) aufweist.
  3. System nach Anspruch 1, dadurch gekennzeichnet, dass die mechanische Bremse (44, 54) auf die Übertragungswelle der entsprechenden Walze wirkt.
  4. System nach Anspruch 1, dadurch gekennzeichnet, dass die mechanische Bremse eine Backenbremse ist.
  5. System (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Arretierungsmittel ein elektronisches System umfassen, dass zum Steuern der Betätigungsvorrichtung der Antriebswalzen (40, 50) geeignet ist, so dass die Betätigungsvorrichtung bei Stillstand der Anlage (1) ein konstantes Drehmoment ausübt, das zum Ausgleichen der Elastizität der Bänder (42, 52) geeignet ist und diese gleichzeitig still und straff hält.
  6. System nach Anspruch 1, dadurch gekennzeichnet, dass die Arretierungsmittel (44, 54) in Aktion treten, wenn die Betätigungsvorrichtung der Antriebswalzen (40, 50) abgeschaltet wird, und sich bei Wiederinbetriebnahme der Anlage deaktivieren, wenn der Wert des Drehmoments, das durch die Betätigungsvorrichtung ausgeübt wird, derart ist, dass die Bänder (42, 52) einer Spannung ausgesetzt sind, die 90 % der normalen Betriebsspannung übersteigt, was deren nachteiliges Gleiten im Verhältnis zum Streifen (100) verdichteten Pulvers vermeidet.
EP05077754.9A 2004-12-10 2005-12-01 Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten Active EP1669178B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05077754T PL1669178T3 (pl) 2004-12-10 2005-12-01 Ulepszona instalacja do formowania ceramicznych kafelków lub płyt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000149A ITRE20040149A1 (it) 2004-12-10 2004-12-10 Impianto perfezionato per la formatura di piastrelle o lastre ceramiche

Publications (3)

Publication Number Publication Date
EP1669178A2 EP1669178A2 (de) 2006-06-14
EP1669178A3 EP1669178A3 (de) 2006-11-08
EP1669178B1 true EP1669178B1 (de) 2014-02-12

Family

ID=36049884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077754.9A Active EP1669178B1 (de) 2004-12-10 2005-12-01 Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten

Country Status (7)

Country Link
EP (1) EP1669178B1 (de)
CN (1) CN1785631A (de)
ES (1) ES2457751T3 (de)
IT (1) ITRE20040149A1 (de)
PL (1) PL1669178T3 (de)
PT (1) PT1669178E (de)
RU (1) RU2385801C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106738212A (zh) * 2017-01-10 2017-05-31 佛山市赛普飞特机械有限公司 一种陶瓷粉料连续预压辊成型机

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101559619B (zh) * 2009-04-07 2011-03-16 景德镇陶瓷学院 一种辊压成型大规格陶瓷泥板的设备
PL3099478T3 (pl) * 2014-01-30 2020-09-07 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Sposób wytwarzania ciągłego pasa prasującego do ceramicznych płytek mających powierzchnię strukturalną
CN105397900A (zh) * 2015-12-14 2016-03-16 烟台政通节能建材设备制造有限公司 生产墙体砌块的重复滚压装置
CN107139323A (zh) * 2016-03-01 2017-09-08 湖南省旺丰机械自动化服务有限公司 一种装饰石膏板背模、底模自动对正机构
CN106079037A (zh) * 2016-07-29 2016-11-09 徐春雷 一种压实固体疏松物料以成型板坯的装置及方法
CN107697610B (zh) * 2016-08-09 2019-04-26 耐落螺丝(昆山)有限公司 定距同步输送装置
CN106239702B (zh) * 2016-09-27 2020-04-14 广东科达洁能股份有限公司 一种连续成型陶瓷压砖机及其生产工艺
CN109227891A (zh) * 2018-10-24 2019-01-18 广东科达洁能股份有限公司 一种生产带背纹的陶瓷砖坯的辊压装置
CA3157151A1 (en) * 2019-10-18 2021-04-22 Valinge Innovation Ab A continuous press arrangement and a method for manufacture of building panels

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GB190022447A (en) * 1900-12-10 1901-12-10 William Worby Beaumont Improvements in Light Locomotives.
US2407253A (en) * 1943-10-28 1946-09-10 Guy O Conner Forming machine
US3217863A (en) * 1964-10-07 1965-11-16 Mining Engineering Co Ltd Tensioning means for belt conveyors
SU925794A1 (ru) * 1979-03-16 1982-05-07 Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Приводна станци ленточного конвейера
JPS6087998A (ja) * 1983-10-18 1985-05-17 Nishihara Environ Sanit Res Corp ベルトプレスの濾布弛み防止装置
SU1518236A1 (ru) * 1988-02-01 1989-10-30 Предприятие П/Я Р-6760 Конвейер с бесконечным гибким элементом
RU2167096C1 (ru) * 1999-10-15 2001-05-20 Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) Дисково-колодочный тормоз для ленточного конвейера
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ITRE20020035A1 (it) 2002-04-24 2003-10-24 Sacmi Metodo ed impianto per la formatura di lastre o piastrelle ceramiche

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106738212A (zh) * 2017-01-10 2017-05-31 佛山市赛普飞特机械有限公司 一种陶瓷粉料连续预压辊成型机
CN106738212B (zh) * 2017-01-10 2019-07-12 佛山市赛普飞特机械有限公司 一种陶瓷粉料连续预压辊成型机

Also Published As

Publication number Publication date
CN1785631A (zh) 2006-06-14
ES2457751T3 (es) 2014-04-29
RU2005137233A (ru) 2007-06-10
EP1669178A2 (de) 2006-06-14
ITRE20040149A1 (it) 2005-03-10
RU2385801C2 (ru) 2010-04-10
PL1669178T3 (pl) 2014-08-29
EP1669178A3 (de) 2006-11-08
PT1669178E (pt) 2014-04-16

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