EP1403017A2 - Form zum Herstellen von keramischen Fliesen - Google Patents

Form zum Herstellen von keramischen Fliesen Download PDF

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Publication number
EP1403017A2
EP1403017A2 EP03425542A EP03425542A EP1403017A2 EP 1403017 A2 EP1403017 A2 EP 1403017A2 EP 03425542 A EP03425542 A EP 03425542A EP 03425542 A EP03425542 A EP 03425542A EP 1403017 A2 EP1403017 A2 EP 1403017A2
Authority
EP
European Patent Office
Prior art keywords
die
bearing
dies
seatings
internally
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.)
Granted
Application number
EP03425542A
Other languages
English (en)
French (fr)
Other versions
EP1403017A3 (de
EP1403017B1 (de
Inventor
Fabio Casolari
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.)
Pelati Cecilia En Casolari Nicole
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to TW93108369A priority Critical patent/TW200531814A/zh
Publication of EP1403017A2 publication Critical patent/EP1403017A2/de
Publication of EP1403017A3 publication Critical patent/EP1403017A3/de
Application granted granted Critical
Publication of EP1403017B1 publication Critical patent/EP1403017B1/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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
    • B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • B30B15/067—Press rams with means for equalizing the pressure exerted by a plurality of press rams

Definitions

  • the die of the invention exhibits at least two forming cells, which enable at least two tiles to be formed contemporaneously.
  • Dies of this type are generally formed by two half-dies which can slide vertically, alternatively nearing and distancing one from the other.
  • a typical pressing cycle comprises at least one loading stage of the die with ceramic material, a pressing stage and an unloading stage of the formed tile.
  • the loading stage is performed using a drawer, specially filled with ceramic material, which can slide on the plane comprising the upper face of the bottom half-die.
  • This drawer deposits, by force of gravity, a load of ceramic material internally of the various forming cells of the die.
  • the drawer translates along a predetermined direction, sliding on a loading plane over each of the forming cells of the die, in an alternating cycle.
  • the ceramic material in the outgoing journey from the loading plane, falls by gravity internally of the cells.
  • the drawer also carries out a levelling action on the material deposited in the cells, flattening and bringing the load to the level of the upper surface of the bottom half-die.
  • the two half-dies are brought together and the pressing action is performed.
  • the formed tiles are then unloaded from the die and sent on to the kiln for firing.
  • a problem of this type of forming is the die loading stage. Since this occurs with the ceramic materials falling by force of gravity, a homogeneous settling of the materials in the various cells is not guaranteed, especially when the cells lie at different distances with respect to the initial position, or rest position, of the loading drawer. Generally the first cell filled by the drawer receives an excess of mateial with respect to the following cell or cells. As the levelling-compacting run is the same for each of the cells, some tiles are more "pressed” than others. This leads to different behaviours during firing of the tiles, in particular determining a non-uniformity in size of the products, i.e. tiles characterised by different densities of material will be subject to different thermal deformation and, consequently, when cold will be of different sizes. In the production of tiles using traditional dies it is therefore necessary to include a "selection" stage of the tiles, following on from the firing stage, to group homogeneously-dimensioned tiles together.
  • connection produces a) a reduction in the compensating capacity of the isostatic die, as the quantity of oil therein has to be changed for each pressing cycle; b) frequent losses of oil from connection tubes with possible breakage thereof.
  • connection causes a) weakness in the connection tubes which, during work cycles, frequently break due to the effect of the continuous movement of the die in the forming cell; b) impracticable conditions during installation or replacement of the isostatic die; c) reduction in the compensating capacity of the isostatic dies, as they are forced to changed the internal quantity of oil during each pressing cycle.
  • the main aim of the invention is to obviate the above-described drawbacks by providing a die for forming ceramic tiles which provides homogeneous densities between the forming cells.
  • 1 denotes in its entirety a die according to the present invention. It comprises a top half-die 1a and a bottom half-die 1b, which together define at least two forming cells 30 and 40.
  • One of the two half-dies is advantageously provided with an isostatic bottom.
  • the two half-dies are vertically mobile between a loading position, in which they are distanced one from another in order to enable filling of the forming cells with ceramic material, and a pressing position, in which they are pressed together by a press to form the tiles.
  • At least one of the half-dies, for example the top half-die 1a comprises a bearing plate 2 which exhibits at least two seatings 3 and 4 located at the forming cells 30 and 40.
  • each of the at least two seatings 3 and 4 delimits, together with one of the die-bearing dies 6 and 7 a closed chamber, denoted respectively by 10 and 11, which two closed chambers 10 and 11 are in reciprocal fluid communication.
  • the die-bearing shoes 6, 7 are slidable internally of the respective seatings 3 and 4 between a rest position, in which the dies are in contact with the bottom of the respective seatings 3, 4 and an active position in which they are distanced from the bottom of the seatings 3, 4.
  • the two chambers 10, 11 are connected by means of a channel 5 which develops internally of the bearing plate 2.
  • the connnection could be achieved by an external connection conduit.
  • the two chambers 10, 11 are filled with a non-compressible fluid (liquid), for example oil, so that, during the pressing action, the die-bearing shoes 6, 7, through the channel 5, are subject to the same pressure.
  • a non-compressible fluid for example oil
  • the die-bearing shoe 6 of the forming cell 30 itself will be arranged closer to the plane defined by the bottom of the seatings 3 and 4 than the other die-bearing shoe 7 of the other forming cell 40.
  • the pressing run of the die-bearing shoe 6, with respect to the run of the other die-bearing shoe 7, develops by imposing on the ceramic material load in the cell 30 a greater final thickness than the final thickness of the material load in the other forming cell 40.
  • the final pressure internally of the formed tiles is overall homogeneous, so that there is a homogeneous density of material internally of the tiles.
  • the die comprises elastic means 8 for maintaining the dies in the rest position.
  • the elastic means 8 comprise a plurality of flexion springs 12 connected to the bearing plate 2 and each having an end inserted in a groove 13 afforded in the die-bearing shoes 6, 7. If oil is not sent to the chambers 10 and 11, thanks to the elastic elements 8 the die can function traditionally with the two dies aligned and resting on the bottoms of the seatings 3 and 4.
  • the elastic means 8 comprise an elastomer spring 22 which is interpositioned between a mushroom element 23 fixed to the bearing plane 2 and a plate 24, fixed to the die-bearing shoe 6, 7.
  • the mushroom element 23 is provided with a stalk which is freely housed with play internally of a through-hole afforded in the plate 24.
  • the plate 24 is fixed externally on the upper surface of the single die-bearing shoe 6, 7 and is housed freely internally of a first cavity 25 afforded in the bearing plate 2.
  • Each of the die-bearing shoes 6, 7 affords a second cavity 26 in which the set consisting of the elastomer spring 22 mounted on the mushroom element 23 is freely housed.
  • the die of the present invention offers considerable advantages, and in particular produces tiles characterised by homogeneous material density. These tiles, thanks to this characteristic, exhibit substantially uniform dimensions following firing, avoiding any need for checking or selection following firing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)
EP03425542A 2002-09-29 2003-08-07 Form zum Herstellen von keramischen Fliesen Expired - Lifetime EP1403017B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW93108369A TW200531814A (en) 2003-08-07 2004-03-26 A die for forming ceramic tiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO20020259 2002-09-29
IT000259A ITMO20020259A1 (it) 2002-09-29 2002-09-29 Stampo per formatura di piastrelle ceramiche.

Publications (3)

Publication Number Publication Date
EP1403017A2 true EP1403017A2 (de) 2004-03-31
EP1403017A3 EP1403017A3 (de) 2005-10-12
EP1403017B1 EP1403017B1 (de) 2008-07-16

Family

ID=31972218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425542A Expired - Lifetime EP1403017B1 (de) 2002-09-29 2003-08-07 Form zum Herstellen von keramischen Fliesen

Country Status (6)

Country Link
EP (1) EP1403017B1 (de)
AT (1) ATE401180T1 (de)
DE (1) DE60322158D1 (de)
ES (1) ES2306850T3 (de)
IT (1) ITMO20020259A1 (de)
PT (1) PT1403017E (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006029738A1 (de) * 2004-09-15 2006-03-23 Euroditan S.L. Presse für die herstellung von keramischen fliesenrohlingen
EP2168740A1 (de) 2008-09-26 2010-03-31 Alfredo Missana Halbfarbstoff zum Pressen von losen Materialien, insbesondere Keramikgemischen
CN101633199B (zh) * 2009-07-25 2011-02-09 西南交通大学 陶瓷压机的平台定位结构
ITMI20121558A1 (it) * 2012-09-19 2014-03-20 Martinelli Ettore Srl Stampo per la formatura di piastrelle e simili
ITRE20130018A1 (it) * 2013-03-13 2014-09-14 Ferrari Carlo Societa Per Azioni Off Stampo isostatico perfezionato
EP2990192A1 (de) * 2014-08-27 2016-03-02 Benteler Automobiltechnik GmbH Pressumformwerkzeug mit toleranzausgleich

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2421457B1 (es) * 2012-02-29 2014-11-04 Macer, S.L. Dispositivo porta-punzones isostático para moldes para la fabricación de piezas cerámicas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1759429C3 (de) * 1968-04-30 1973-12-20 Villeroy & Boch Keramische Werke Kg, 6642 Mettlach Vorrichtung zum gleichzeitigen Pressen mehrerer plattenförmiger Presslinge
US3890413A (en) * 1974-08-15 1975-06-17 Hydramet American Inc Apparatus and method for compacting particulate materials
US4272980A (en) * 1979-08-10 1981-06-16 Gulf & Western Manufacturing Company Load equalizer for press tooling
IT1269352B (it) * 1994-07-27 1997-03-26 Fabio Casolari Piano flottante per tamponi di presse

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006029738A1 (de) * 2004-09-15 2006-03-23 Euroditan S.L. Presse für die herstellung von keramischen fliesenrohlingen
EP2168740A1 (de) 2008-09-26 2010-03-31 Alfredo Missana Halbfarbstoff zum Pressen von losen Materialien, insbesondere Keramikgemischen
CN101633199B (zh) * 2009-07-25 2011-02-09 西南交通大学 陶瓷压机的平台定位结构
ITMI20121558A1 (it) * 2012-09-19 2014-03-20 Martinelli Ettore Srl Stampo per la formatura di piastrelle e simili
WO2014045149A1 (en) 2012-09-19 2014-03-27 Martinelli Ettore Srl Mold for forming tiles and the like
ITRE20130018A1 (it) * 2013-03-13 2014-09-14 Ferrari Carlo Societa Per Azioni Off Stampo isostatico perfezionato
EP2990192A1 (de) * 2014-08-27 2016-03-02 Benteler Automobiltechnik GmbH Pressumformwerkzeug mit toleranzausgleich
CN105382098A (zh) * 2014-08-27 2016-03-09 本特勒尔汽车技术有限公司 具有公差补偿的冲压成形模具
US10322443B2 (en) 2014-08-27 2019-06-18 Benteler Automobiltechnik Gmbh Press-forming tool with tolerance compensation

Also Published As

Publication number Publication date
DE60322158D1 (de) 2008-08-28
ATE401180T1 (de) 2008-08-15
EP1403017A3 (de) 2005-10-12
PT1403017E (pt) 2008-08-18
EP1403017B1 (de) 2008-07-16
ITMO20020259A1 (it) 2004-03-21
ES2306850T3 (es) 2008-11-16

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