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EP0909622B1 - Vorrichtung und Verfahren zum Füllen eines Pressformhohlraumes mit einem pulverförmigen oder körnigen Material bei der Herstellung von keramischen Fliesen - Google Patents

Vorrichtung und Verfahren zum Füllen eines Pressformhohlraumes mit einem pulverförmigen oder körnigen Material bei der Herstellung von keramischen Fliesen Download PDF

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Publication number
EP0909622B1
EP0909622B1 EP98203157A EP98203157A EP0909622B1 EP 0909622 B1 EP0909622 B1 EP 0909622B1 EP 98203157 A EP98203157 A EP 98203157A EP 98203157 A EP98203157 A EP 98203157A EP 0909622 B1 EP0909622 B1 EP 0909622B1
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EP
European Patent Office
Prior art keywords
loading
compartment
carriage
intermediate container
mould cavity
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
EP98203157A
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English (en)
French (fr)
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EP0909622A1 (de
Inventor
Ermes Bigi
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.)
L B Officine Meccaniche SpA
Original Assignee
L B Officine Meccaniche SpA
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 L B Officine Meccaniche SpA filed Critical L B Officine Meccaniche SpA
Publication of EP0909622A1 publication Critical patent/EP0909622A1/de
Application granted granted Critical
Publication of EP0909622B1 publication Critical patent/EP0909622B1/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
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/022—Feeding several successive layers, optionally of different materials

Definitions

  • This invention relates to a device and method for feeding the mould cavity with powder or granular material, in ceramic tile manufacture.
  • the device comprises a loading carriage having one or more lowerly and upwardly open compartments, and provided with appropriate grids. Each compartment corresponds to a mould cavity and has plan dimensions substantially equal to those of the mould cavity.
  • the carriage is moved forwards and rearwards while slidingly resting on a flat continuous surface positioned as a continuation of the upper surface of the mould die plate comprising the cavity to be filled.
  • the carriage is moved synchronously with the press operations between a retracted position in which the loading compartment receives the material, and an advanced position in which the compartment lies above the mould cavity so that the material falls from the compartment and into the cavity. While passing from the retracted position to the advanced position, the loading compartment is closed lowerly by the surface on which it slides.
  • the carriage is fed by an overlying hopper the lower mouth of which has a transverse dimension (ie perpendicular to the carriage movement) equal to the total transverse dimension of the loading compartments and of the parts which separate them from each other, whereas the longitudinal dimension is less than the corresponding compartment dimension.
  • the lower mouth of the hopper covers the entire area of the loading compartments so that the material falling from the hopper fills these compartments.
  • the different materials, originating from different silos are fed in the determined proportions into the loading hopper, where they are mixed together to some extent and are released together into the compartment in the loading carriage.
  • Said device is however only able to produce blurred aesthetic effects on the tile, which moreover arise in a substantially random and non-repetitive manner, and is not able to form precise and well defined lines, figures or backgrounds.
  • a device is shown in SU-A-1447681, comprising one intermediate container overlying the loading compartment of the loading carriage whose internal space is divided by a series of vertical baffles which define a plurality of separated regions wherein different materials are conveyed. Furthermore, a second series of vertical baffles are positioned within the loading compartment to define a plurality of mutually separated shaped regions, which receive materials from the intermediate container.
  • An object of this invention is to provide a device which enables determined aesthetic designs with figures, lines or backgrounds to be created having well defined outlines (for example a figure having a precise geometrical shape positioned on a background of different colour).
  • Figure 1 shows schematically a press 2 of any known type. On the bed 3 of the press 2 there are positioned a die plate 4 and a lower mould die 5, which together define the forming cavity 6.
  • the cavity 6 can be of any shape.
  • one and the same mould can comprise several cavities 6 so that several tiles are formed simultaneously (multiple mould).
  • the upper die 7, which is vertically movable, is positioned in the upper part of the press.
  • the cavity (or cavities) 6 is filled with materials in powder form which are transferred by a loading carriage 10 having, for each cavity 6, a loading compartment 11 having plan dimensions substantially equal to those of the forming cavity 6.
  • the carriage 10 possesses two sidepieces 13 which are constrained by idle wheels 16 or other guide means to the fixed support structure 9 of the device, such as to be able to slide only in a longitudinal horizontal direction.
  • a crank mechanism 14 operated by a motor 15 the carriage is moved forwards and rearwards in said longitudinal direction between a retracted position (shown in Figure 1), in which the loading compartment 11 is fed with the material to be transferred to the cavity 6, and an advanced position, in which the compartment 11 is positioned above the cavity 6 into which it releases the material contained in it.
  • the number of compartments 11 is equal to the number of cavities 6, they having the same arrangement as the cavities 6.
  • the compartment 11 slides on and in contact with a fixed horizontal slide surface 8 coplanar with the upper surface of the die plate 4 and positioned adjacent thereto.
  • the device of this invention is applied to the fixed structure 9 and operates on the carriage 10 to load its compartment 11 when the carriage is in its retracted position ( Figure 1).
  • said device comprises an intermediate container 20 located in a fixed position above the carriage compartment 11 when the carriage is in its retracted position, the container 20 having plan dimensions equal to the loading compartment 11, its height being conveniently greater than the compartment 11.
  • the interior space of the container 20 is divided into a series of vertical baffles 22 which define a plurality of shaped regions, separated from each other, corresponding to those parts of the figure which are to be reproduced as the aesthetic effect in the tile. If for example a figure formed from a circle positioned at the centre of a uniform background is to be reproduced in the tile, at the centre of the compartment 11 there is placed a baffle bent as a cylindrical surface, the cross-section of which has the dimensions of the circle of the figure to be obtained.
  • baffles 22 define several diagonally positioned squares, and within four of these a like number of smaller squares with their sides parallel to the sides of the compartment 11.
  • the container 20 is fed by a series of substantially vertical tubes 21 which open separately into the various shaped regions defined by the baffles 22.
  • the upper ends of the tubes 21 branch from two or more upper containers 30', 30" each containing a material of different characteristics.
  • the connections between the regions of the compartment 11 and the upper containers is such that each region defined by the baffles 22 receives the specific material scheduled for it, on the basis of the aesthetic effect to be produced.
  • a second plurality of baffles 12 which in plan view form a figure exactly equal to that formed by the baffles 22, to hence define a plurality of mutually separated shaped regions identical in plan view to the regions defined by the first series of baffles 22 (see Figure 4).
  • the base of the container 20 is closed by a first perforated flat plate 23 having a plurality of apertures 23' in the form of elongate narrow parallel slots for passage of the materials.
  • the apertures 23' are distributed within the plate in accordance with the plan distribution of the shaped regions defined by the baffles 22 and 12, ie no aperture 23' extends beyond the contour of the specific region within which it is located (see Figure 3 in particular).
  • a movable second perforated flat plate 24 Adjacent to and below the first plate 23 there is positioned a movable second perforated flat plate 24 having an equal series of passage apertures 24' to the plate 23 (see Figure 4).
  • Said passage apertures 23' and 24' are shaped to enable the two plates 23 and 24 to be arranged in a first mutual position in which the apertures mate, or to be moved slightly one from another into a second mutual position, in which the apertures of one plate are closed by the solid surface of the other plate.
  • the lower plate 24 is secured to the container 20 in such a manner as to be able to be slid horizontally relative to the other plate 23 which is fixed, while remaining adjacent to it.
  • the two plates 23 and 24 define a sort of slide valve which opens and closes passage for the materials and is virtually flush with the upper edge of the compartment 11.
  • the carriage In front of the loading compartment 11 the carriage comprises a second loading compartment 31 provided with usual transverse grids and having a longitudinal dimension less than the compartment 11, its purpose being to contain material for filling the upper layer of the mould cavity.
  • Said front loading compartment 31 is fed with powder material by usual known means when the carriage 10 is in its retracted position.
  • these means comprise a fixed loading hopper 32, the lower mouth of which is positioned transversely and is open and closed by a rocking shutter 26 positioned in front of the container 20.
  • the hopper 32 lies above the second compartment 31.
  • the shutter 36 is moved by means of a cylinder-piston unit and the lower mouth of the hopper is opened, so that the material present in it falls into the underlying compartment 31.
  • the plate 24 In operation, when the carriage 10 is moved into its retracted position, the plate 24 is moved into said first position relative to the fixed plate 23, so that the apertures 23' and 24' mate, the materials located in the various container regions defined by the baffles 22 of the container 20 hence descending into the loading compartment 11 and being transferred into the corresponding underlying regions defined by the baffles 12.
  • the hopper 32 loads the front loading compartment 31.
  • the plate 24 is then moved into the second position so that the apertures 23' and 24' become offset and closed, the carriage 10 then undergoing outward travel into its advanced position, followed by return travel to its retracted position.
  • the lower die 5 descends through a predetermined distance to form the cavity 6, which during lowering receives the materials contained in the overlying compartment 11. Being separated from each other by the baffles 12 of the compartment 11, these materials fall into the mould cavity 6 by simple gravity action and with the same arrangement. Consequently the same figures created by the different materials in the compartment 11 are recreated in the cavity 6, and specifically in its lower part. These figures are those which will create the desired aesthetic effect on the tile.
  • compartment 11 is dimensioned such as to contain, and hence to subsequently release into the cavity 6, a quantity of material less than that required to completely fill the cavity.
  • the cavity 6 is completely filled by the passage of the front compartment 31 above it during the return travel of the carriage 10.
  • this compartment releases onto the material deposited by the compartment 11 a quantity of different material, which is scraped by the element 33 (or by other usual scraper means) to hence completely fill the mould cavity 6.
  • a rotary brush positioned in the front region of the carriage 10 to clean the surface along which the carriage 10 slides is indicated in the figures by the reference numeral 35.
  • the first embodiment is not without a minimum degree of mixing of the powders due to the shaking which occurs during the outward travel of the carriage 10.
  • the compartment 11 is not completely filled, and during the to-and-fro movement of the carriage 10 there is an accumulation of material against the baffles 12 which divide the internal volume of the compartment 11.
  • the intermediate container 20, with its baffles 22, is rigidly fixed to the compartment 11 and hence to the carriage 10.
  • the base of the container 20 is separated from the top of the compartment 11 by a fixed plate 23 and a movable plate 24, both carrying apertures 23' and 24' respectively.
  • the compartment 11 is provided with baffles 12 having the same distribution as the baffles 22 of the container 20.
  • This embodiment requires the presence of a shutter for closing the lower mouths of the powder feed tubes 21, which is operated by a usual pneumatic cylinder-piston unit 390.
  • the loading hopper 32 is positioned at a higher level than in the preceding embodiment to enable the intermediate container 20 to pass during the outward and return travel of the carriage 10.
  • compartment 37 To the front of the compartment 11 and of the overlying container 20 there is provided a compartment 37 totally similar to the compartment 31 described in the first embodiment except with regard to its height. In this second case the compartment 37 has a greater height than the compartment 31 in order to minimize the distance which separates it from the lower mouth of the loading hopper 32.
  • the flat plate 24 When the carriage 10 is in its retracted position the flat plate 24 is positioned such as to close the apertures 23' of the plate 23. In this position the cylinder-piston unit 390 moves the shutter 39 such as to enable the material contained in the tubes 21 to fill the container 20, with simultaneous filling of the front compartment 37 by the hopper 32.
  • the cylinder-piston unit 390 When loading of the powder materials into the container 20 and into the compartment 37 is complete, the cylinder-piston unit 390 operates the shutter 39 to close the lower mouth of the tubes 21. At this point the carriage 10 is made to advance into the material discharge position by the motor 15.
  • the lower die 5 is maintained coplanar with the carriage slide surface.
  • the pneumatic cylinder-piston units 26 move the plate 24 into said first position in which the apertures 23' of the plate 23 mate with the apertures 24' of the plate 24.
  • the material contained in the container 20, the inner volume of which is divided by the baffles 22, is deposited in the underlying compartment 11, the volume of which is divided by the baffles 12 which, in plan view, form a figure exactly equal to that formed by the baffles 22. Consequently in falling into the compartment 11 the material maintains the same arrangement and distribution which it had in the container 20.
  • the pneumatic cylinder-piston units 26 move the plate 24 into said second position, in which the apertures 23' of the plate 23 are closed.
  • the lower die 5 is then lowered to form the cavity 6, which during lowering receives the material contained in the overlying compartment 11, without any change in the arrangement and distribution of the material.
  • volume of the cavity 6 is such as to receive both the material contained in the compartment 11 and that contained in the compartment 37.

Landscapes

  • 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)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Claims (8)

  1. Vorrichtung zum Füllen des Pressformhohlraumes bei der Fliesenherstellung mit einem pulverförmigen oder körnigen Werkstoff, die folgendes aufweist:
    Einen Ladeschlitten (10), der mindestens ein Ladeabteil (11) mit Grundrissmaßen aufweist, die denjenigen des Pressformhohlraumes (6) entsprechen, und der mit einer Hin- und Herbewegung zwischen einer eingefahrenen Stellung, in der das Ladeabteil (11) den Werkstoff aufnimmt, und einer vorgerückten Stellung angetrieben wird, in der das Ladeabteil (11) den Werkstoff in den darunterliegenden Pressformhohlraum (6) freigibt;
    mindestens einen Zwischenbehälter (20), der über dem Ladeabteil (11) liegt und Grundrissmaße aufweist, die denjenigen des Ladeabteils (11) entsprechen, wobei ein Innenraum durch eine erste Folge vertikaler Leitplatten (22) unterteilt ist, die eine Mehrzahl gebildeter, voneinander getrennter Bereiche festlegen;
    Einrichtungen (30',30",21) zum Befördern von für die Bereiche bestimmten, unterschiedlichen Werkstoffen in die gebildeten Bereiche;
    Einrichtungen (23,24) zum Schließen und Öffnen des Werkstoffdurchgangs durch den Zwischenbehälter (20) ;
    eine zweite Folge innerhalb des Ladeabteils (11) des Schlittens positionierter, vertikaler Leitplatten (12), um eine Mehrzahl voneinander getrennter, gebildeter Bereiche festzulegen;
    wobei der Zwischenbehälter (20) einen inneren Laderaum aufweist, der mit durch die Fördereinrichtungen (30',30'',21) in denselben geladenem Werkstoff gefüllt ist,
    dadurch gekennzeichnet, dass der Rauminhalt des inneren Laderaumes des Zwischenbehälters (20) größer als der Rauminhalt des Ladeabteils (11) ist,
    die untere Basis des inneren Laderaumes des Zwischenbehälters (20) an dem oberen Teil des Ladeabteils (11) haftet, und von diesem durch die plattenförmigen Einrichtungen (23,24) getrennt wird, das Ladeabteil (11) mit Werkstoff gefüllt ist, der durch den inneren Laderaum des Zwischenbehälters (20) in denselben geladen wird;
    die zweite Folge vertikaler Leitplatten (12) im Grundriss eine Form bildet, die der durch die ersten vertikalen Leitplatten (22) gebildeten entspricht, um gebildete Bereiche festzulegen, die den Teilen der Form entsprechen, die zwecks ästhetischer Wirkung der Fliese reproduziert werden müssen,
    die Einrichtungen (23,24) zum Schließen und Öffnen des Werkstoffdurchgangs durch den Zwischenbehälter (20) eine fixierte und perforierte, flache Platte (23) mit einer Mehrzahl von Öffnungen (23') umfassen, wobei die Platte (23) die Basis des Zwischenbehälters (20) verschließt, und diesen von dem oberen Teil des Ladeabteils (11) trennt.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass
    sich der Zwischenbehälter (20) in einer im Verhältnis zu dem Abteil (11) des Ladeschlittens (10) fixierten Stellung befindet.
  3. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Zwischenbehälter (20) starr mit dem Ladeabteil (11) des Ladeschlittens (10) verbunden ist.
  4. Vorrichtung nach Anspruch 3,
    dadurch gekennzeichnet, dass
    sie bewegbare Einrichtungen zum Verschließen der unteren Öffnung der Einrichtung (21) zum Zuführen von Pulvermaterial zu dem mindestens einen Zwischenbehälter (20) aufweist.
  5. Vorrichtung nach Anspruch 4,
    dadurch gekennzeichnet, dass
    es sich bei den bewegbaren Einrichtungen zum Verschließen der unteren Öffnung der Einrichtung (21) um eine von mindestens einer pneumatischen Zylinder-Kolben-Einheit (390) betätigte Klappe handelt.
  6. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass
    die Einrichtungen zum Schließen und Öffnen eine erste, dünne, perforierte, flache Platte (23) umfassen, welche die Basis des Zwischenbehälters (20) verschließt und eine Mehrzahl von Werkstoffdurchgangsöffnungen (23') aufweist, die innerhalb desselben in Übereinstimmung mit der Grundrissverteilung der durch die Platten (22) gebildeten, festgelegten Bereiche verteilt sind, und eine an die erste (23) Platte angrenzende, und bewegbare, zweite, dünne, perforierte, flache Platte (24) mit einer gleichen Mehrzahl von Durchgangsöffnungen (24') aufweist;
    die Durchgangsöffnungen (23' ,24') so gebildet sind, dass die zwei Platten (23,24) in einer ersten, gegenseitigen Stellung angeordnet werden können, in der die jeweiligen Öffnungen (23',24') zusammenpassen, oder voneinander in eine zweite, gegenseitige Stellung verlagert werden können, in der die Öffnungen der einen Platte durch die massive Oberfläche der anderen verschlossen werden; eine Einrichtung (26) zum Bewegen der bewegbaren Platte (24) im Verhältnis zu der fixierten Platte (23), zum Öffnen und Schließen der Öffnungen (23' ,24') im Verhältnis zu der Stellung des Ladeschlittens (10) vorhanden ist.
  7. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass
    die Front des Ladeabteils (11) des Ladeschlittens (10) ein zweites Ladeabteil (31,37) mit einer Längsabmessung aufweist, die kleiner ist als diejenige der ersten, und angeordnet ist, um Werkstoff zum Füllen der oberen Lage des Pressformhohlraumes (6) zu enthalten.
  8. Verfahren zum Laden des Pressformhohlraumes unter Verwendung der Vorrichtung der Ansprüche 1, 3, 4, 5, 6 und 7,
    dadurch gekennzeichnet, dass es die folgenden Schritte aufweist:
    Laden des Behälters (20) und des Abteils (37), während das Ladeabteil (11) leer bleibt,
    Vorrücken des Ladeschlittens (10) bis zur Werkstoffentladestellung, während die untere Matrize (5) mit der Schlittengleitfläche koplanar gehalten wird,
    Öffnen der plattenförmigen Einrichtungen (23,24), so dass ein Teil des in dem Behälter (20) enthaltenen Werkstoffes in das Ladeabteil (11) freigegeben wird, während sich der Ladeschlitten (10) in der Ladestellung befindet;
    danach Absenken der Matrize (5), um den in dem Ladeabteil (11) enthaltenen Werkstoff aufzunehmen, nachfolgend während der Rückkehrbewegung des Ladeschlittens (10), Freigabe des in dem vorderen Abteil (31) enthaltenen Werkstoffes in den Pressformhohlraum (6), und Ausschaben desselben, um den Pressformhohlraum (6) vollständig zu füllen.
EP98203157A 1997-10-14 1998-09-18 Vorrichtung und Verfahren zum Füllen eines Pressformhohlraumes mit einem pulverförmigen oder körnigen Material bei der Herstellung von keramischen Fliesen Expired - Lifetime EP0909622B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97RE000074A IT1297755B1 (it) 1997-10-14 1997-10-14 Attrezzatura e metodo per alimentare con materiale in polvere o granulare, la cavita' dello stampo, nella fabbricazine di piastrelle
ITRE970074 1997-10-14

Publications (2)

Publication Number Publication Date
EP0909622A1 EP0909622A1 (de) 1999-04-21
EP0909622B1 true EP0909622B1 (de) 2004-02-25

Family

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Application Number Title Priority Date Filing Date
EP98203157A Expired - Lifetime EP0909622B1 (de) 1997-10-14 1998-09-18 Vorrichtung und Verfahren zum Füllen eines Pressformhohlraumes mit einem pulverförmigen oder körnigen Material bei der Herstellung von keramischen Fliesen

Country Status (5)

Country Link
EP (1) EP0909622B1 (de)
AT (1) ATE260171T1 (de)
DE (1) DE69821858T2 (de)
ES (1) ES2212212T3 (de)
IT (1) IT1297755B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19852892C2 (de) * 1998-11-17 2000-10-05 Villeroy & Boch Vorrichtung für die Bildung von Dekorschichten
ITRE20010123A1 (it) * 2001-12-20 2003-06-20 Lb Officine Meccaniche Spa Carrello ceramico a doppio caricamento
ITMO20040176A1 (it) * 2004-07-08 2004-10-08 Inteco Ceramic Supplies S R L 'metodo di caricamento stampi per la pressatura a secco di manufatti ceramici di forma irregolare perticolaremete tegole e simili'.
CN101214698B (zh) * 2007-12-29 2010-06-16 广东科达机电股份有限公司 对流布料装置
ITMO20100362A1 (it) * 2010-12-23 2012-06-24 Lb Officine Meccaniche Spa Mezzi di trasferimento
IT1403340B1 (it) * 2010-12-23 2013-10-17 Lb Officine Meccaniche Spa Mezzi di trasferimento
WO2012085889A1 (en) * 2010-12-23 2012-06-28 L.B. - Officine Meccaniche - S.P.A. Transferring means and method for manufacturing thereof
ES2472140B2 (es) * 2014-02-07 2015-01-29 Kerajet S.A. Método de proyección de sólidos sobre una superficie

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR419924A (fr) * 1910-09-01 1911-01-18 Gottfried Wassermann Appareil pour l'application des couleurs sur les carreaux de mosaÏque en ciment
DE1281915B (de) * 1965-03-27 1968-10-31 Thuringia Feinkeramikmaschinen Fuellvorrichtung an Pressen zum Herstellen zweischichtiger Platten
FR1580211A (de) * 1967-04-11 1969-09-05
NL6707021A (nl) * 1967-05-22 1968-11-25 Mosa Porselein & Tegelfab Werkwijze en inrichting voor het persen van meerlaagstegels
DD126956B1 (de) * 1975-11-20 1983-08-17 Eduard Kalin Presse zur herstellung von zweischichtigen keramischen platten
DE2609803A1 (de) * 1976-03-10 1977-09-15 Dolomitwerke Gmbh Verfahren und vorrichtung zum volumetrischen befuellen einer pressenform zur herstellung keiliger compoundsteine
SU1447681A1 (ru) * 1986-01-03 1988-12-30 Львовский политехнический институт им.Ленинского комсомола Устройство дл загрузки пресс-форм
IT1239147B (it) * 1990-02-26 1993-09-28 L B Officine Meccaniche Carrello a doppio caricamento per stampi ceramici in genere, tipicamente per la fabbricazione di piastrelle pressosmaltate.
IT1268838B1 (it) * 1994-07-21 1997-03-13 L B Engineering Srl Attrezzatura per alimentare il carrello di carico dello stampo nella fabbricazione di piastrelle ceramiche

Also Published As

Publication number Publication date
DE69821858T2 (de) 2004-07-15
DE69821858D1 (de) 2004-04-01
ES2212212T3 (es) 2004-07-16
IT1297755B1 (it) 1999-12-20
ITRE970074A0 (it) 1997-10-14
ATE260171T1 (de) 2004-03-15
ITRE970074A1 (it) 1999-04-14
EP0909622A1 (de) 1999-04-21

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