EP1129834A2 - Vorrichtung zum Füllen von einer Pressform mit keramischem Werkstoff - Google Patents

Vorrichtung zum Füllen von einer Pressform mit keramischem Werkstoff Download PDF

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Publication number
EP1129834A2
EP1129834A2 EP01200256A EP01200256A EP1129834A2 EP 1129834 A2 EP1129834 A2 EP 1129834A2 EP 01200256 A EP01200256 A EP 01200256A EP 01200256 A EP01200256 A EP 01200256A EP 1129834 A2 EP1129834 A2 EP 1129834A2
Authority
EP
European Patent Office
Prior art keywords
accordance
chamber
jacket
carriage
compartment
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.)
Withdrawn
Application number
EP01200256A
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English (en)
French (fr)
Other versions
EP1129834A3 (de
Inventor
Ermes L.B. - Officine Meccaniche - S.P.A. Bigi
Ivanno L.B. -Officine Meccaniche- S.P.A. Ligabue
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.)
Lb - Officine Meccaniche-Spa
Original Assignee
Lb - 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 Lb - Officine Meccaniche-Spa filed Critical Lb - Officine Meccaniche-Spa
Publication of EP1129834A2 publication Critical patent/EP1129834A2/de
Publication of EP1129834A3 publication Critical patent/EP1129834A3/de
Withdrawn legal-status Critical Current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
    • 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 for loading ceramic tile forming moulds.
  • the present invention falls within the context of said search, its object being to provide a loading device able to obtain unusual and decorative motifs, such as tiles having their exposed surface shaded, or provided with decorations which distinctly project above the surrounding regions, this being achieved within the context of so-called pressure-glazing processes.
  • a further object of the invention is to provide a loading device the mode of operation of which can be varied at will while the process is underway, even at each cycle if desired.
  • a further object is to obtain said results within the context of a simple, rational and reliable construction.
  • a loading carriage which is provided with a compartment for filling the forming cavity or cavities of a ceramic mould positioned on a press, and driven with horizontal reciprocating rectilinear movement between a withdrawn position in which it disposes said compartment below a hopper for supplying at least one base material in powder form, and an advanced position in which it disposes said compartment above said cavity or cavities with simultaneous closure of the discharge port of said supply hopper.
  • At least one distributor unit in front of said compartment, and rigid therewith, there is provided at least one distributor unit, described in detail hereinafter, which is arranged to deposit, on at least a part of the plan profile of the mould cavity, a desired or predetermined quantity of at least one finishing powder material for the tile to be formed.
  • both the operation and the feed of said at least one distributor unit can be adjusted at will during the course of manufacture, even at each cycle, to consequently obtain unusual decorative motifs.
  • Figure 1 is a side elevation of the invention.
  • Figure 2 is a partial plan view of the preceding figure, in which those members lying above the carriage have been omitted for clarity.
  • Figure 3 is a section on the line III-III of Figure 2 to an enlarged scale.
  • Figure 4 is a part of the section on the line IV-IV of Figure 3.
  • Figure 5 is a section on the line V-V of figure 2 to an enlarged scale.
  • Figure 6 is a part of the section on the line VI-VI of Figure 5.
  • Figure 7 shows a further embodiment of the invention.
  • FIGS. 1 and 2 show a horizontal operating surface 1 on which there is provided a carriage 2 driven to traverse forwards and rearwards, for example by a motorised connecting rod-crank unit (not shown), in synchronism with the operating stages of a ceramic press, also not shown.
  • the cavity 4 of said die plate 3 receives a vertically slidable reverse face die 5, i.e. for moulding the tile laying face.
  • the upper face of the die plate 3 is coplanar with the upper face of the operating surface 1.
  • said carriage 2 comprises a usual loading compartment 7 provided with a likewise usual grid 8.
  • said compartment 7 is arranged to occupy a withdrawn position in which it lies below a supply hopper 9, and an advanced position in which it lies above the forming cavity 4 and closes the discharge port of the hopper by means of the flat horizontal plate 10 fixed to the structure of the carriage 2.
  • the material 12, also known as the base material as it is intended to form the tile body, is fed into the hopper 9 by suitable known means.
  • the number of said distributor units can obviously vary.
  • each individual distributor unit comprises an outer horizontal cylindrical chamber 19 fixed to two centrally holed opposing end shoulders 20,21, and an internal rotatable coaxial drum 22 having its outer diameter less than the inner diameter of the chamber 19, and being clad with a jacket 245 of elastically deformable material to which reference will be made hereinafter.
  • the drum 22 is mounted at a shoulder 20 on a support to 220, and is connected at its opposite shoulder 21 to the exit of a geared motor unit 210 with an incorporated variable-speed gear.
  • said geared motor units 210 are connected to the control system of the press loading system, which in its turn is in continuous dialogue with the general control and regulator system of the press, in such a manner as to enable the production personnel to select at will those which are to operate and their operating speed, even at each pressing cycle if necessary.
  • Said systems from 140 to 180 are connected to respective supply sources of powders having different characteristics, for example in terms of colour and particle size, and can be made to slide transversely to the travel direction of the carriage 2 (see Figure 1).
  • Said powders constitute the finishing material for the tiles to be formed.
  • said materials can be selected from the following: Powdered ceramic glaze, bulk-coloured atomized clay, surface-coloured atomized clay and micronized clay, or a mixture of one or more thereof.
  • Each individual system 140-180 is arranged to feed a respective hopper 23, which is provided with a level probe 230 and communicates with an entry port 24 provided along the upper generators of the chamber 19 of each distributor unit 14-18.
  • the probe is preferable but is not indispensable.
  • More than one feed hose for powder materials of different characteristics can clearly be provided, converging into each hopper 14-18, for example two hoses can be provided having their mouths aligned in the travel direction of the carriage 2.
  • said entry port 24 is of small width, and of length practically equal to the dimension of that mould cavity 4 positioned in front of the carriage 2.
  • the lower generators of said exit port 25 are positioned just spaced from the lower face of the mould die plate 3 (see Figure 1).
  • the jacket 245 which encloses the drum 22 of the distributor units 14-18 consists, as stated, of an elastically deformable material, which in the present case is a closed or open-cell spongy material.
  • the outer surface of said jacket 245 can be substantially smooth and be slightly spaced from the inner surface of the chamber 19, such as to provide a thin toroidal gap 26 for transfer of the powder material from the entry port 24 to the exit port 25 following rotation of the drum 22.
  • the outer surface of the said jacket 245 is of irregular shape, i.e. rough, with parts slightly spaced from the inner surface of the chamber 19, and parts practically in contact with the said inner surface.
  • the exit sheet is irregular and/or discontinuous.
  • the jacket 245 is inserted into the chamber 19 as a lightly forced fit, and on its surface there is provided at least one impression or recess 33 in which the powder material provided by the hopper 23 collects.
  • the distributor unit 17 delivers at least a small mass of powder material having, in plan view, a shape determined by the contour of said at least one impression or recess 33. If the impression or recess is in the shape of a straight or curved line, a pattern, possibly repetitive, identical to said shape will be formed on the tile.
  • the shape and depth of said recess or impression 33 can obviously vary, and more than one of the three aforedescribed solutions can be used for each individual layer 245.
  • At least one portion of the outer surface of the jacket will be smooth and slightly spaced from the jacket 19, at least one portion will be rough as aforestated, and at least one portion will be smooth and in contact with the jacket 19, and provided with at least one impression 33. This obviously also applies to longitudinal bands of the said outer surface of the jacket 245.
  • One or more of the distributor units 14-18 can be configured to form and distribute material flakes.
  • one or more of the units 14-18 comprises an outer casing 190 having in its interior two semi-cylindrical recesses, each of which receives a roller 220, 221 respectively.
  • an aperture carries a small hopper 230 similar to, and performing the same function as, the hopper 23.
  • the roller 220 has a smooth indeformable surface and is constructed preferably of steel, whereas the roller 221 has a slightly deformable hard rubber surface.
  • the two rollers are tangential, and the material lying above them is compressed into flakes when they are rotated.
  • roller surface can evidently be chosen from a large variety of types with easily intuitable results, just as the roller drive system can be intuitively derived from the drive system for the single roller of the preceding example.
  • the invention operates as follows.
  • the respective geared motor unit 210 rotates the drum 22 with a tangential speed which can be less than, equal to or greater than the average traversing speed of the carriage 2, depending on the aesthetic effect required and the type of jacket 245 associated with the distributor unit active at that moment.
  • the said geared motor unit 210 halts on the basis of the selected program, when the discharge port 25 of the respective distributor unit, for example 14, and abandons the cavity 4, or even beforehand.
  • the upper die 6 is lowered to effect the pressing operation while the lower die 5 lies resting on the press bed.
  • the carriage 2 On termination of pressing, the carriage 2 lies at the end of its withdrawal travel, with the compartment 7 positioned below the hopper 9, and the hoppers 23 situated below the respective hoses 140-180, which if required restore within them the correct quantity of powder.
  • the lower die 5 is then raised to position the just formed tile flush with the upper face of the die plate 3, after which the cycle is repeated identically except for any changes to the manufacturing program.
  • At least one relatively thin layer of powder is deposited on the mass previously loaded into the mould cavity 4, this layer involving all or only part of the plan profile of said cavity 12, in the manner programmed, as stated, by the operator, the manner of which can also vary at each pressing cycle.
  • the system can prearrange them on a belt which transfers them into said cavity.
  • the loading cycle is inverted, in the sense that the material which falls first into the cavity is that originating from the compartment 7.

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)
  • Moulds, Cores, Or Mandrels (AREA)
EP01200256A 2000-02-21 2001-01-24 Vorrichtung zum Füllen von einer Pressform mit keramischem Werkstoff Withdrawn EP1129834A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE200010 2000-02-21
ITRE20000010 IT1318322B1 (it) 2000-02-21 2000-02-21 Dispositivo per il caricamento degli stampi ceramici.

Publications (2)

Publication Number Publication Date
EP1129834A2 true EP1129834A2 (de) 2001-09-05
EP1129834A3 EP1129834A3 (de) 2003-07-23

Family

ID=11453853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01200256A Withdrawn EP1129834A3 (de) 2000-02-21 2001-01-24 Vorrichtung zum Füllen von einer Pressform mit keramischem Werkstoff

Country Status (2)

Country Link
EP (1) EP1129834A3 (de)
IT (1) IT1318322B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154827A (ja) * 1991-12-09 1993-06-22 Inax Corp タイル表面の装飾方法
JPH06304912A (ja) * 1993-04-27 1994-11-01 Kubota Corp 化粧建材の製造方法
JPH08207037A (ja) * 1994-11-09 1996-08-13 Inax Corp 坏土の供給装置及び方法
EP0894591A1 (de) * 1997-08-01 1999-02-03 Ariostea S.p.A. Vorrichtung zur Füllung der Formen in Pressen zur Herstellung von Fliesen und Ausführungsmittel dafür
EP0941826A2 (de) * 1998-03-10 1999-09-15 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung einer dekorierten Fliese , entsprechende Vorrichtung zum Füllen der Pressformhohlräume und so hergestellte Fliese
EP1043133A2 (de) * 1999-04-02 2000-10-11 Martinelli Ettore s.r.l. Presse zum Herstellen von Fliesen mit einer Fördervorrichtung für zwei Materialschichten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154827A (ja) * 1991-12-09 1993-06-22 Inax Corp タイル表面の装飾方法
JPH06304912A (ja) * 1993-04-27 1994-11-01 Kubota Corp 化粧建材の製造方法
JPH08207037A (ja) * 1994-11-09 1996-08-13 Inax Corp 坏土の供給装置及び方法
EP0894591A1 (de) * 1997-08-01 1999-02-03 Ariostea S.p.A. Vorrichtung zur Füllung der Formen in Pressen zur Herstellung von Fliesen und Ausführungsmittel dafür
EP0941826A2 (de) * 1998-03-10 1999-09-15 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung einer dekorierten Fliese , entsprechende Vorrichtung zum Füllen der Pressformhohlräume und so hergestellte Fliese
EP1043133A2 (de) * 1999-04-02 2000-10-11 Martinelli Ettore s.r.l. Presse zum Herstellen von Fliesen mit einer Fördervorrichtung für zwei Materialschichten

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 552 (M-1491), 5 October 1993 (1993-10-05) & JP 05 154827 A (INAX CORP), 22 June 1993 (1993-06-22) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02, 31 March 1995 (1995-03-31) & JP 06 304912 A (KUBOTA CORP), 1 November 1994 (1994-11-01) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12, 26 December 1996 (1996-12-26) & JP 08 207037 A (INAX CORP), 13 August 1996 (1996-08-13) *

Also Published As

Publication number Publication date
ITRE20000010A1 (it) 2001-08-21
IT1318322B1 (it) 2003-08-25
EP1129834A3 (de) 2003-07-23

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