WO2012107623A1

WO2012107623A1 - Installation for producing artificial stone in panel form

Info

Publication number: WO2012107623A1
Application number: PCT/ES2012/070081
Authority: WO
Inventors: Eusebio Moro Franco
Original assignee: Eusebio Moro Franco
Priority date: 2011-02-10
Filing date: 2012-02-09
Publication date: 2012-08-16
Also published as: ES2393981A1; ES2393981B1

Abstract

Included, in principle, is a device for supplying a mixture of materials for manufacturing artificial stone in panel form. The invention is characterized in that it comprises a rotary table (21) that has a number of independent stations arranged radially, one after the other, and at angularly equidistant intervals. Thus, the rotary table (21) has a first station (1) for loading of the mixture of materials which is poured over a mould (22), a second station (2) where the mixture of materials undergoes vibration for the purposes of homogenization thereof, a third, pressing station (3) for compressing a mixture that forms the panel (9) to be produced, a fourth, drying and curing station (4), a fifth, demoulding station (5), a sixth station for preparing the mould (22) and at least one final additional station.

Description

INSTALLATION TO PRODUCE ARTIFICIAL STONE IN THE FORM OF

LICENSE PLATE

OBJECT OF THE INVENTION

The present invention, as expressed in the statement of this specification, refers to an installation for producing artificial stone in the form of a plate used in cladding and paving, manufacture of tiles, countertops, sanitation articles etc.

Thus, the objective of the invention is to improve the performance of the current installations, in order to improve their production for the manufacture of articles intended for cladding, better known as cold ceramics, by constituting a viable alternative to cladding. conventional ceramics.

BACKGROUND OF THE INVENTION

At present, to produce artificial stone in the form of pl they manufacture in principle large boards or plates of artificial stone by means of vibro-compression processes, but with installations for large formats where the manufacture of product applicable to tile-shaped coating is not feasible, for which it would be necessary to subject the large artificial stone boards to successive cutting processes with the consequent increase in the final product obtained.

Among other records for producing artificial stone the following are known.

The Japanese invention patent with publication number JP6218829 is intended to improve fire resistance, abrasion resistance, scratch resistance and weather resistance of artificial stone that has the appearance and texture of natural stone, filling a Mold with a mixture of natural stone and acrylic binder resin, pressing with vibration in a vacuum state, heals at room temperature or heat, and polishing at least one surface.

The Japanese invention patent with publication number JP6219800 and also the Japanese invention patent with publication number JP6218737 have the same purpose as the Japanese invention patent cited in the preceding paragraph, with the difference that in the latter two the composition varies of the mixture of materials.

It is also known the invention patent with application number in Spain 200750042 referring to a process for the manufacture of articles of agglomerated stone with antistatic properties and stone articles obtained with said procedure.

The process is essentially characterized in that the initial mixture of materials incorporates an electrically conductive component that is dispersed homogeneously at least 20% of the initial mixture.

The article obtained is characterized in that it has a slab, tile or tile shape.

The expired invention patent No. 341986 refers to a process for the manufacture of artificial stone slabs whose essentiality lies in the fact of incorporating a large number of flexible fibers into a fragile mixture of cement, concrete or mortar for casting slabs. thin

The patent of invention with application number in Spain 200801470 refers to a process for the manufacture of an article of agglomerated stone with thermal resistance characterized in that it comprises adding an inorganic powder refractory material with an average particle size not exceeding one look at the inorganic load used in the procedure.

The invention patent with application number in

Spain 200703142 refers to a procedure for the manufacture of a static article of agglomerated stone and article obtained by means of said process which is characterized in that it comprises the addition of an electrically conductive powder component to a manufacturing mass comprising a mixture of binder and an inorganic filler.

The invention patent with application number 9901966 refers to a process for manufacturing artificial stone planks especially applicable to decoration whose first claim is characterized in that the mixtures are based on a raw material, a resin, a silica microlyzate, a crushing of silica, adding to said mixture a percentage of a catalyst, an accelerator, a silane in formula, as well as dyes in a liquid state.

DESCRIPTION OF THE INVENTION

The installation for producing plate-shaped artificial stone of the type cited in the preceding documents, which constitutes the object of the invention comprises in principle a device that supplies a mixture of materials for manufacturing artificial plate-shaped stone, said mixture being provided with materials by continuous kneaders fed by dry mixers that receive said mixture in turn from weighing hoppers, which in turn receive the material from silos by means of feeding belts in combination with sieves and finally fits Note that silos receive materials from initial receiving hoppers.

It is characterized in that it comprises a turntable that has several independent stations arranged radially one after another angularly equidistant from each other:

A first charging station that receives the material mix from the supply device that discharges a calculated portion of material mix on a mold according to the geometry and volume of the plate to be obtained, mold incorporated in the rotary table. A second station that has a vibration device that homogenizes the load of the mixture of materials.

A third pressing station that has a punch device to compact the mixture of the plate to be obtained until reaching the required density. A fourth drying and curing station where the plate to be obtained reaches the necessary mechanical resistance.

A fifth demoulding station that has a transfer device that places the plate to be obtained on a transport line, already outside the turntable.

- A sixth mold preparation station.

At least one additional final station.

Another feature of the invention is that it comprises two additional end stations also arranged one after the other: a seventh adjacent to the sixth station and another eighth station adjacent to the first station.

The device that supplies the mixture of materials that feeds and fills the mold located in the first loading station of the rotary table, comprises such a supply device an endless mechanism that drags the mixture of materials until it is unloaded into said mold located in the first station Rotating table load.

Finally, it should be noted that at the end of the transport line associated with the fifth demoulding station, an accumulator device of the plates obtained to regulate the speed between the different phases of the process is located.

In figure 3 we have schematically represented the rest of the installation that corresponds to the processes end of product termination and packaging, where at least one line of polishing, grinding, cutting and packaging is distinguished and optionally another line where a dryer is inserted, for those parts that require a subsequent phase of drying or thermal conditioning.

This is important to be able to manufacture different types of product whether or not they require additional drying.

Thus, as it is referred to in the section of the object of the invention, with the new installation of the invention it is possible to improve production for the manufacture of articles intended for coating, better known as cold ceramics, by constituting a viable alternative to conventional ceramic coatings.

Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, some figures are attached in which the object of the invention has been shown as an illustrative and non-limiting nature.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1.- Shows a plan view of the installation as a whole to produce artificial stone in the form of a plate, object of the invention. It incorporates a characteristic rotary table with several independent stations arranged radially and angularly equidistant from each other.

Figure 2.- Shows a plan view of an essential part of the installation that includes the rotary table with its different independent stations.

Figure 3.- Schematically shows the final part of this type of installation, where additional or finishing operations are carried out.

DESCRIPTION OF AN EXAMPLE OF EMBODIMENT OF THE INVENTION

Considering the numbering adopted in the figures, the installation to produce artificial stone in the form of Plaza includes the following nomenclature used in description:

1. - First season.

2. - Second season.

2 '.- Vibration device.

3. - Third station.

3 '.- Punching device.

4. - Fourth drying and curing station.

5. - Fifth demolding station.

5 '.- Transfer device.

6. - Sixth season.

6 '.- Additional device.

7. - Seventh station.

8. - Eighth station.

9.- Plates.

10. - Transport line.

11. - Accumulator device.

12. - Endless device.

13. - Continuous side kneading machines.

14.- Dry mixers.

15. - Cross conveyor belts.

16. - Weighing hoppers.

17. - Side silos.

18. - Sifters.

19.- Initial reception hoppers.

20. - Longitudinal conveyor belts.

21. - Rotating table.

22. - Mold.

23. - First line.

24.- Polishing station.

25. - Grinding and cutting station.

25 '.- Grinding and cutting station.

26. - Packing station.

26 '.- Packing station.

27.- Second line.

28.- Drying. It is determined from a rotary table 21 to which the mixture of materials arrives to produce plates 9 determined by the artificial stone, so that for this purpose the rotary table 21 comprises a first loading station 1 of the mixture of materials conveniently dosed that is discharged onto a mold 22, a second station 2 which has a vibration device 2 'that homogenizes the loading of the mixture of materials, a third pressing station 3 by means of a punching device 3' to compact the mixture of the plate 9 to be obtained until reaching the required density, a fourth drying and curing station 4 where the article or plate to be obtained reaches a necessary mechanical resistance to facilitate its subsequent demolding in a fifth station 5 which has a transfer device 5 ' which places the article (plate 9) in a transport line 10 towards an extreme area where the final finishing of the article is carried out, already outside the l a rotary table 21. Said transport line is located in a corresponding diametral direction with the first 1 and fifth 5 stations.

As a continuation of the fifth demoulding station 5, the rotary table 21 comprises a sixth station 6 for preparing the mold 22 for cleaning, application of non-stick products, etc., by means of an additional device 6 '.

In turn, as a continuation of the sixth preparation station 6 of the mold 22 and in a position prior to the first loading station 1, the rotary table 21 incorporates two successive stations: seventh 7 and eighth 8, for additional operations depending on the type of article to obtain, as for example in the case in which the application of independent vacuum to the mixture of the material is necessary.

It should be noted that the discharge of the mixture of materials in the first loading station 1 of the table Rotary incorporates said first station the respective mold 22 to receive said material mixing load.

At the end of the transport line 10, an accumulator device 11 of the pieces obtained (plates 9) is provided to regulate the speed between the different phases of the process, and prior to the curing or drying zone that is carried out by conventional means, which may or may not incorporate forced heat, depending on whether an increase in temperature is required for drying or occurs at room temperature.

Finally, during the drying of the plates 9, they can be subjected to polishing processes, edge grinding or special cuts to create special or irregular shapes.

On the other hand, the supply of the material mixture to the first loading station 1 is carried out by means of an endless device 12 fed by two continuous side kneading machines 13, which in turn receive the mixing of materials from dry mixers 14 by means of transverse conveyor belts 15.

In turn, dry mixers 14 receive the different materials from weighing hoppers 16 and these from lateral silos 17, previously passing materials through sieves 18 to select grain size. These side silos 17 are fed from initial receiving hoppers 19.

The transverse conveyor belts 15 receive the mixing of materials from the weighing hoppers 16 through longitudinal conveyor belts 20 which flow into such transverse conveyor belts 15.

In figure 3 we have schematically represented the rest of the installation that corresponds to the final processes of termination and packaging of the product, where at least a first line 23 is distinguished with a polishing station 24, a grinding and cutting station 25 and one packing station 26. Optionally a second line 27 is provided where a dryer 28 is inserted for those parts that require a subsequent phase of drying or thermal conditioning. This second line 27 also incorporates a grinding and cutting station 25 'and a packing station 26'.

Claims

1. - INSTALLATION TO PRODUCE ARTIFICIAL STONE IN THE FORM OF PLATE, which includes a device that supplies a mixture of materials for manufacturing artificial stone in the form of a plate, is characterized in that it comprises a rotating table (21) that has several radially arranged independent stations one after another equidistant angularly from each other:

a first charging station (1) that receives the mixture of materials from the supply device that discharges a calculated portion of mixture of materials onto a mold (22) according to the geometry and volume of the plate (9) to be obtained, mold ( 22) supported by the rotary table (21);

- a second station (2) that has a vibration device (2 ') that homogenizes the loading of the material mixture;

a third pressing station (3) that has a punching device (3 ') to compact the mixture of materials of the plate (9) to be obtained until reaching the required density;

a fourth drying and curing station (4) where the plate (9) to be obtained reaches the necessary mechanical strength;

- a fifth demoulding station (5) which has a transfer device 5 'that places the plate (9) to be obtained on a transport line (10), already outside the rotating table (21);

a sixth station (6) of preparation of the mold (22); - at least one additional final station.

2. - INSTALLATION TO PRODUCE ARTIFICIAL STONE IN THE FORM OF A PLATE, according to claim 1, characterized in that it comprises two additional end stations also arranged one after the other: a seventh (7) adjacent to the sixth station (6) and another eighth station (8) adjacent to the first station (1).

3.- INSTALLATION TO PRODUCE ARTIFICIAL STONE IN THE FORM OF PLATE, according to claim 1, characterized in that the device that supplies the material mixture comprises an endless mechanism (12) that drags the mixture of materials until it is discharged into the mold (22) located in the first loading station (1) of the rotary table (21).

4.- INSTALLATION TO PRODUCE ARTIFICIAL STONE IN

PLATE FORM, according to claim 1, characterized in that at the end of the transport line (9) associated with the fifth demoulding station (5), an accumulator device (11) of the plates (9) obtained is located.