EP0749816A1 - Presse à table tournante, pour la fabrication de carreaux, ayant deux stations de chargement de matériaux dans les moules - Google Patents

Presse à table tournante, pour la fabrication de carreaux, ayant deux stations de chargement de matériaux dans les moules Download PDF

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Publication number
EP0749816A1
EP0749816A1 EP96830339A EP96830339A EP0749816A1 EP 0749816 A1 EP0749816 A1 EP 0749816A1 EP 96830339 A EP96830339 A EP 96830339A EP 96830339 A EP96830339 A EP 96830339A EP 0749816 A1 EP0749816 A1 EP 0749816A1
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EP
European Patent Office
Prior art keywords
container
press according
loading
shut
mould
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
EP96830339A
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German (de)
English (en)
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EP0749816B1 (fr
Inventor
Ugo Giannelli
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Individual
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Individual
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Filing date
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Publication of EP0749816A1 publication Critical patent/EP0749816A1/fr
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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
    • B28B13/022—Feeding several successive layers, optionally of different materials
    • 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

Definitions

  • the present invention relates to a rotary press for producing tiles and similar articles, of the type comprising: a turntable on which are placed several moulds which are to be filled with loose material that is then pressed and consolidated; and, located around the turntable, two loading stations which introduce, one after the other, a first layer of loose material and a second layer of loose material into each mould, the second layer of loose material being different from the first in terms of both type and thickness.
  • Rotary presses do currently exist of the type referred to in the present invention, in which two successive loading stations introduce two loads of loose material directly into the mould to form a first layer (which in the finished tile will form the surface to be walked on) and a second layer (which in the finished tile will form the back or bottom surface).
  • the thickness of the two layers is usually different: whereas the thickness of the first layer can be adjusted as desired by pouring a greater or lesser amount of loose material into the mould, in this type of machine, the thickness of the second layer necessarily needs to be equal to the difference between the total height of the mould and the thickness of the first layer. This limits the versatility of the machine.
  • shut-off systems are extremely complex and typically consist of a system of continuous belts which are subject to wear by the granular material which is usually employed in the production of tiles.
  • the object of the present invention is to produce a rotary press of the type referred to above, with an intermediate container into which the second layer of loose material is loaded, but which does not have the drawbacks of conventional machines.
  • the second loading station has a movable unit comprising: an intermediate loading container, in which the loose material which is to form the second layer in the mould is accumulated, and the shut-off means of the intermediate container, which move integrally with the loading container when the movable unit moves from a position outside the turntable and underneath a hopper containing the loose material, to the position above the turntable in which the loose material is passed from the loading container - into which it has been fed from the hopper - into the intermediate container.
  • the forward travel of the movable unit causes the closure of the bottom of the intermediate container, while the subsequent return travel of the movable unit gradually uncovers the bottom of the intermediate container, thereby enabling the loose material to be discharged from the intermediate container into the mould which has been brought beneath the said intermediate container by the rotating turntable.
  • Fig. 1 shows, in a very diagrammatic manner, a rotary press, of a type known per se, in which the second loading station can be made in accordance with the details described in the present invention.
  • the press as a whole is denoted by the reference 1 and has a turntable 3 that rotates in the direction indicated by the arrow f3 about a vertical axis A-A.
  • a plurality of moulds 5 are located on the turntable and are successively carried through the various working stations found along the rotary path travelled by the turntable 3.
  • the reference 7 denotes a first station in which a first layer of material (usually with a high moisture content) is loaded into each mould 5, while the reference 9 denotes a second station in which a second layer of loose material is loaded into the moulds which have already been partially filled in the station 7.
  • the reference 10 denotes the pressing station and the reference 11 denotes the collection station.
  • Fig. 2 shows a longitudinal cross-section on a plane II-II in Fig. 1.
  • Fig. 2 also shows part of the turntable 3 and the mould 5, which is in the position in which the second layer of loose material is loaded into it.
  • the mould 5 is a multiple mould for producing four tiles simultaneously. However, it should be understood that the mould can also be of a different shape.
  • an intermediate container which is denoted as a whole by the reference 13 and consists of a plurality of compartments whose shape and position correspond to the compartments of the subjacent mould 5.
  • the intermediate container 13 is loaded, in the manner described below, with the loose material which is to form the second layer of the tiles, a first layer of loose material, denoted by the letter S in Fig. 2, already having been dispensed into the mould 5.
  • the station 9 has a hopper 15 that contains a supply of loose material which is to form the second layer in the mould 5.
  • the hopper 15 is carried by a stationary framework 17.
  • the bottom 15A of the hopper opens out into an intermediate compartment 19.
  • Located beneath the compartment 19 is a plate shutter 21 fitted with an upper wear sheet or plate 23.
  • the plate shutter 21 has an aperture 25, the shape and size of which correspond to the lower aperture of the compartment 19.
  • the loading container 27 is attached to the lower surface of the plate shutter 21. It has a lower aperture 27A, beneath which is located a stationary plate 29, to which the intermediate container 13 is attached.
  • the stationary plate 29 is attached to the framework of the machine.
  • the plate shutter 21 is integral with a pair of guide runners, only one of which is visible in Fig. 2, where it is denoted by the reference 31.
  • Each runner 31 is guided in a corresponding upper guide 33 which is integral with the framework 17.
  • the movement of the plate shutter 21, in the direction of the double arrow F, is obtained by means of a cylinder and piston actuator 35.
  • the cylinder of the actuator 35 is attached at 37 to the framework 17, while the rod 39 of the actuator 35 is hinged at 41 to a block 43 which is integral with the plate shutter 21.
  • the plate shutter 21 is attached at the rear - by means of a bracket 45, a SilentblocTM 47 and a crosspiece 49 - to a first sliding sleeve 50 mounted on a corresponding lower guide 51 constituted by a cylindrical bar, on which a second sliding sleeve 52 is also mounted.
  • the two sliding sleeves 50 and 52 are joined together by an intermediate tube 53 which is coaxial with the cylindrical guide 51.
  • On the actual machine just as there are two upper guides 33, there are also two lower guides 51, a guide bar being provided on each side of the loading station.
  • shut-off means 55 Attached to the sliding sleeves 50, 52 is a shut-off means 55 that closes the bottom of the intermediate container 13 while it is being loaded by the loading container 27, in a manner which will be described below.
  • the vertical position of the shut-off means 55 with respect to the lower guides 51, and therefore with respect to all the stationary elements of the loading station, can be adjusted via a screw system associated with each of the two sleeves 50, 52.
  • the screw system provides a threaded bar 57 and a pair of ring nuts 59 and 61 for each sleeve 50, 52.
  • the upper surface of the shut-off means 55 is formed by an interchangeable wear plate 63 which is locked in place by means of knobs 65.
  • the loading station which has been described up to this point works in the following way: in the position shown in Fig. 2, the loose material contained in the hopper 15 drops through the bottom 15A of the hopper and into the compartment 19, from which it then drops into the loading container 27, the bottom of which is closed by the stationary plate 29.
  • the actuator 35 is activated so as to move the entire movable unit - made up of the plate shutter 21, the loading container 27 attached to the underside of the plate shutter 21 and the lower shut-off means 55 - towards the left, in the direction of the arrow F.
  • the movement is guided along the upper guides 33 and the lower guides 51.
  • the front edge (on the left in Fig. 2) of the shut-off means 55 lies ahead of the lower aperture 27A of the loading container 27 with respect to the direction of advance F of the movable unit.
  • the said loading container 27 gradually drops its contents of loose material into the intermediate container 13.
  • the latter is divided up into a series of subcompartments 13A by means of a plurality of partitions 13B that extend perpendicularly to the movement of the movable unit.
  • An additional series of dividing partitions 13C are also provided, but are more sparsely spaced, in a direction parallel to the direction of advance F.
  • scrapers are provided in various positions and remove the loose material from the sliding surfaces.
  • a first and a second scraper denoted by the references 71 and 73, are provided on either side of the bottom 15A of the hopper and of the subjacent compartment 19. These scrapers remove the particles of loose material from the wear plate 23 of the plate shutter 21.
  • a third scraper 75 is located next to the loading container 27 and is in contact with the upper surface of the stationary plate 29 between the loading container 27 and the vertical axis of the turntable 3.
  • This third scraper 75 is controlled by an actuator 77 that holds it in a raised position, in other words not in contact with the stationary plate 29, during the forward travel of the loading container 27 from the position shown in Fig. 2 to the position in which it lies above the intermediate container 13.
  • the actuator 77 brings the scraper 75 into its lower position, that is in contact with the stationary plate 29 and with the upper surface of the intermediate container 13. In this way, the loose material in the intermediate container 13 is levelled off and any excess collects in the space between the scraper 75 and the loading container 27. This excess material will be pushed by the loading container 27 into the intermediate container 13 during the next passage of the movable unit.
  • a fourth scraper 79 is associated with the shut-off means 55 and cleans the upper surface of the wear plate 63 during the forward travel of the movable unit.
  • the intermediate container 13 can be replaced with another one of different height depending on how thick the second layer of material in the mould 5 needs to be. If the intermediate container 13 is changed, the position of the shut-off means 55 with respect to the guide 51 also needs to be adjusted by means of the threaded bars 57, so that the distance between the lower aperture 27A of the loading container 27 and the upper surface of the wear plate 63 of the shut-off means 55 always approximately corresponds to the height of the intermediate container 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
EP96830339A 1995-06-19 1996-06-14 Presse à table tournante, pour la fabrication de carreaux, ayant deux stations de chargement de matériaux dans les moules Expired - Lifetime EP0749816B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI950138 1995-06-19
IT95FI000138A IT1278705B1 (it) 1995-06-19 1995-06-19 Pressa rotativa per la produzione di piastrelle con doppia stazione di caricamento del materiale nello stampo

Publications (2)

Publication Number Publication Date
EP0749816A1 true EP0749816A1 (fr) 1996-12-27
EP0749816B1 EP0749816B1 (fr) 2001-11-28

Family

ID=11351320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830339A Expired - Lifetime EP0749816B1 (fr) 1995-06-19 1996-06-14 Presse à table tournante, pour la fabrication de carreaux, ayant deux stations de chargement de matériaux dans les moules

Country Status (4)

Country Link
EP (1) EP0749816B1 (fr)
DE (1) DE69617323T2 (fr)
ES (1) ES2167532T3 (fr)
IT (1) IT1278705B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113977742A (zh) * 2021-11-29 2022-01-28 福建鸿益机械有限公司 一种旋转多工位的梁柱一体仿石干湿成型装置及其方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158221A (en) * 1966-04-05 1969-07-16 Schlosser & Co Gmbh Device for Charging Moulds.
DE1584540A1 (de) * 1963-07-17 1970-03-19 Enrico Longinotti Drehtischpresse zur Herstellung von Presslingen fuer Kachelplatten u. dgl.
FR2392788A1 (en) * 1977-06-02 1978-12-29 Loir Ateliers Concrete article moulding machine - including pre-fill chamber for accurate filling volume determination
FR2589778A1 (fr) * 1985-11-08 1987-05-15 Bernard Michel Tremie a dosage automatique de remplissage des moules pour produits beton.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1584540A1 (de) * 1963-07-17 1970-03-19 Enrico Longinotti Drehtischpresse zur Herstellung von Presslingen fuer Kachelplatten u. dgl.
GB1158221A (en) * 1966-04-05 1969-07-16 Schlosser & Co Gmbh Device for Charging Moulds.
FR2392788A1 (en) * 1977-06-02 1978-12-29 Loir Ateliers Concrete article moulding machine - including pre-fill chamber for accurate filling volume determination
FR2589778A1 (fr) * 1985-11-08 1987-05-15 Bernard Michel Tremie a dosage automatique de remplissage des moules pour produits beton.

Also Published As

Publication number Publication date
IT1278705B1 (it) 1997-11-27
DE69617323D1 (de) 2002-01-10
DE69617323T2 (de) 2002-07-25
ES2167532T3 (es) 2002-05-16
EP0749816B1 (fr) 2001-11-28
ITFI950138A1 (it) 1996-12-19
ITFI950138A0 (it) 1995-06-19

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