WO2013071327A2 - Continuous mixer and device and method for producing artificial stone by means of said continuous mixer - Google Patents

Abstract

The invention relates to a continuous mixer (16) which comprises at least one rotatably mounted shaft (17) having a plurality of blades (18) that are arranged on the shaft (17) and oriented at an angle relative to the shaft (17). The continuous mixer (16) further comprises a first filling opening (19), an outlet opening (20) spaced apart therefrom in the longitudinal direction of the at least one shaft (17) and a second filling opening (21) arranged between the first filling opening (19) and the outlet opening (20). The invention further relates to a blade (18) for a continuous mixer (16) of the above type, a device (1) and a method for producing a slab (9) from artificial stone material by means of the continuous mixer (16) and to a method for producing an intermediate product for producing artificial stone.

Description

 Passage mi shear and apparatus and method for the production of artificial stone using the continuous mixer

The invention relates to a continuous mixer, comprising at least one rotatably mounted shaft with a plurality of arranged on the shaft and obliquely aligned to the shaft blades, a first filling opening and one thereof in the longitudinal direction of the at least one shaft spaced outlet opening. Furthermore, the invention relates to a blade for a continuous mixer of the type mentioned with a mounting region for mounting the blade on a shaft of the continuous mixer.

Moreover, the invention relates to an apparatus for producing a stone made of artificial stone material with a double belt press with a lower belt and a top belt, the device having a loading device for feeding the double belt press with a material for the plate.

In addition, the invention relates to a method for producing an intermediate for the production of artificial stone.

Finally, the invention relates to a method for producing a plate made of artificial stone material consisting of a mineral filler and a polymeric binder and an artificial stone plate or two-component plate produced by this method.

From WO 2010/115225 a method for the continuous production of plates made of artificial stone material using a double-belt press has become known, wherein a molding compound is pressed, which comprises a mixture of a mineral filler and a polymeric binder. The binder is selected from polyester, polyurethane or epoxy resins, wherein the molding compound comprises 85% to 95% filler and 5% to 15% binder. The filler may preferably be selected from stone material, marble powder, quartzite, quartz or a mixture thereof, with a particle size of 1 μιη to 10 mm. Furthermore, pigments, dyes, mirror or glass fragments may be added. For the production of the plates, a double belt press with a vibrator in the region of a precompression zone is used in order to achieve a homogeneous distribution of the molding compound.

However, the known device is very expensive to manufacture due to the vibration device. Another disadvantage of the known method or the known device is that due to poor transport properties of the molding compound between the bands of the double belt press, the size of the plates which can be produced, is greatly limited. Also, the sizes of areas of the same color and the distribution of these areas on the plates can not be influenced well.

It is therefore an object of the present invention to enable a simplification of the production process and an improvement in the quality of the product.

This object is achieved with a continuous mixer of the aforementioned type, which has a second filling opening arranged between the first filling opening and the outlet opening. Furthermore, the object of the invention with a blade of the type mentioned for such a continuous mixer is achieved, wherein the blade at least partially consists of a mixture of a mineral filler, in particular rock, and a polymeric binder, in particular resin. In addition, the object of the invention is achieved with a device of the type mentioned for producing a plate made of artificial stone material, wherein the charging device comprises at least one continuous mixer of the type mentioned above.

In addition, the object of the invention with a method for producing an intermediate product for the production of artificial stone is achieved, wherein the at least one shaft of a continuous mixer of the above type is set in rotation and in the first filling opening a mineral filler, especially rock, and in the second filling opening a polymeric binder, in particular resin, is filled. In addition, the object of the invention with a method for producing a plate made of artificial stone material consisting of a mineral filler and a polymeric binder is achieved, wherein in a first step, an intermediate product is prepared by a method of the type mentioned above, which in at least one further step the plate is pressed.

Finally, the object of the invention is achieved by an artificial stone plate or two-component plate, which is produced by a method of the type mentioned.

Simple continuous mixers are horizontal continuous mixers and basically known. They are usually equipped with fast-rotating impellers and intended for mixing floury, granular, fibrous or flaky carriers with liquids.

The now presented continuous mixer with an additional filling opening allows the very thorough mixing of the substances supplied to the mixer. This has a particularly positive effect on the mixture obtained when the substance introduced into the second filling opening is or contains a binding agent for binding the substance introduced into the first filling opening. As a result, lump formation and insufficient mixing of the two substances are avoided, as this can easily happen when both substances are filled together in a filling opening of a continuous mixer according to the prior art. In particular, the continuous mixer is therefore suitable for the above-mentioned method for producing an intermediate for the production of artificial stone, in which a mineral filler, in particular rock, and in the second filling opening a polymeric binder, in particular resin, is filled in the first filling opening. In this case, the intermediate product preferably has a proportion of the mineral filler of at least 60%, and / or a particle size of the mineral filler is 1 μm to 10 mm. Of course, the presented continuous mixer can also be used for mixing other substances. Mixing is particularly well achieved with a continuous mixer in which the distance between the first filling opening and the second filling opening corresponds to the length which requires the material for forming a constant vortex, for which the first filling opening is specified. In the case mentioned above, the polymeric binder is therefore supplied to a stable vortex of the mineral filler, resulting in a particularly good mixing of the two substances.

Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims and from the description in conjunction with the figures.

It is favorable when the first and the second filling opening and the outlet opening are aligned transversely to the at least one shaft, in particular normal thereto, wherein the first and the second filling opening are arranged rotated substantially 180 ° relative to the outlet opening. In this way, the flow mixer can be gravity filled and emptied when the filler openings face up and the outlet openings face down.

It is favorable if the blades each comprise an angle of substantially 180 °. In this way, both a good material transport and a good mixing of the two filled in the filling material is ensured.

It is favorable if the blades are aligned in their entirety along at least one helix. In this way, a promotion of the mixture to the outlet opening causes or at least favors. The blades can either be aligned along a helix or along several helixes that are angularly offset.

It is advantageous if the at least one helix has a constant pitch. As a result, the material is conveyed evenly through the continuous mixer. It is also conceivable that the helix (s) has / have a variable pitch. For example, the slope may increase towards the outlet opening in order to avoid clogging of the continuous mixer and to ensure a loose mixing of the two substances filled into the filling openings. It is advantageous if the cross section of the first filling opening substantially corresponds to the area of the circle to which the blades are inscribed. This serves to ensure optimum processing of the substance filled in the first filling opening. If the cross-section of the first filling opening is too large, too much material could enter the mixer. If the cross-section is too small, the material may backlog.

It is favorable if the second filling opening is smaller than the first filling opening.

As a result, a good mixing of the substances is also favored. It is advantageous if the blades of the passage at least in sections consist of a mixture of a mineral filler, in particular rock, and a polymeric binder, in particular resin. In particular, in the production of artificial stone so the abrasion of the blades can be kept low, and unavoidable abrasion reduces the quality of the mixture produced with the continuous mixer barely.

It is particularly advantageous if the blades consist of the same material for the production of which the continuous mixer is specified. In this way, unavoidable wear of the blades does not substantially reduce the quality of the mixture produced by the continuous mixer, since the material of the blades and the mixture produced are identical or substantially identical. Small deviations in the composition of the blade material hardly affect the mixture produced.

It is also advantageous if the feeding device of the device for producing a plate made of artificial stone material comprises at least one drum rotatable about its longitudinal axis and one continuous mixer of the type disclosed above per drum, wherein one continuous mixer per drum for feeding the same upstream , This makes it possible to produce artificial stone slabs with sharply defined regions of color since, by rotating the drum, a granulation process can be carried out, by means of which a granulate with predefinable properties can be obtained from a mixture of the base materials which are introduced into the drum ,

Thus, the granules may have rounded particles, for example with a surface of 1 - 40cm ² . The upstream continuous mixer also ensures a particularly good mixing of the ingredients contained in the granules. NATURALLY Lich, the mixing of the components is not limited to the continuous mixer, but takes place to a certain extent even in said drum. Likewise, the granulation process is not necessarily limited to the drum, but may begin to some extent already in the continuous mixer. The boundaries between the mixing process and the granulation process are therefore fluid. By an appropriately sized flow mixer, it is certainly possible that almost completely mixed in the drum, get rid of the necessary ingredients for the granules.

It is advantageous if a chute or an at least partially transparent tube is arranged between the outlet opening of a continuous mixer and a respective drum. In this way, not only the mixture emerging from the continuous mixer can be conveyed into the drum, but also be examined, in particular visually. Disturbances in the mixing process can therefore be detected quickly. A slide also offers the simple possibility of sampling for quality assurance.

An advantageous variant of the invention provides that at an outlet opening of the drum, a distributor device for distributing a granule emerging from the drum is provided. By the distribution device, a homogeneous distribution of the granules emerging from the drum on the lower belt or a transport means in the direction of the lower belt can be achieved.

A preferred variant of the invention is that the distributor device is designed as a turntable. The turntable is driven and rotated about an axis normal to its surface. Here he hurls the granules on the lower belt or on a conveyor belt upstream of the lower belt. In this way, a homogeneous distribution of the particles of the granules can be ensured in a simple manner. This is particularly advantageous when several drums are used to produce the granules, which each produce a granulate of a single color. According to a further embodiment of the invention, a laterally partially surrounded aperture is provided on the turntable, wherein the aperture in the transport direction of the granules in the direction of the double belt press is open This allows a controlled exit of the granules from the turntable on the lower belt of the belt press or on the the subband upstream conveyor belt can be ensured. The arrangement of the aperture defines a discharge direction for the granules and there is no loss due to the exit of the colored granules in undesired directions. An advantageous variant provides that the diaphragm is arranged stationary relative to the turntable.

According to a favorable development, it can be provided that the turntable is coated with a layer of an elastomeric material, in particular rubber. As a result, a substantial improvement in the further transport of the granules from the turntable to the lower belt can be achieved.

An advantageous development of the invention consists in that at least one feed device is provided between the at least one drum and distributor device. This can be a targeted management of the granules from the drum to the distribution device, such as the turntable done.

According to a further embodiment, the feed unit may be funnel-shaped.

According to a further advantageous variant of the invention, at least two drums are provided. This makes it possible to produce each granule with each drum, which differs in color from the granules produced with another drum.

In a variant of the method for producing a plate made of artificial stone material, the passage is sheared only used for mixing components of the artificial stone material. A granulation process does not run in the continuous mixer or only to a small extent. In a further step, this filling mixture of a starting material for the production of the plate is filled into a drum and in a following step granules are produced by rotation of the drum in a granulation process from the filling mixture. Preferably, the drum is fed to a filling mixture, which has at least 60% of stone material, in particular stone powder, with a particle size of 1 μιη to 10 mm. After the granules have been produced, they can be distributed homogeneously over the lower belt or via a conveyor belt upstream of the lower belt. By means of the pre-compressor rollers described below, a plate-shaped granulate can be made from the homogeneously distributed granules. shaped preform are produced, which is subsequently fed to the double belt press. In an alternative method, the granules are prepared directly in the continuous mixer and distributed directly without further processing step in a drum on the lower belt or on a belt upstream of the lower belt and then pressed as described above to form a plate. Both variants of the method according to the invention enable the production of artificial stone slabs with sharply defined areas of color. For the production of two-component plates, the intermediate product (ie in this case the granules) can also be applied to a fabric-like carrier, in particular a fiber mat, and pressed.

In a preferred variant of the method for producing an intermediate for the production of artificial stone, the granulation process is carried out until the particles of the granules produced with the drum have a predetermined sphericity. By specifying a certain sphericity, the structure of the artificial stone and, in particular, its visual appearance on the surface can be significantly influenced.

According to a preferred embodiment of the invention, the granulation process is carried out until the particles have a sphericity according to Rittenhouse of 0.75-0.97, wherein the particles of the granules may have a particle size with a diameter of 5 mm - 30 mm. These values have proven to be advantageous for the production of artificial stone with a particularly beautiful appearance.

The invention together with further advantages will be explained in more detail below on the basis of non-limiting exemplary embodiments, which are illustrated in the drawings:

Each shows in a highly schematically simplified representation:

Fig. 1 is a perspective view of a device according to the invention;

Fig. 2 is a side view of the device of Fig. 1; a plan view of the device of Fig. 1; Fig. 4 is a perspective view of a feeder of the apparatus of Fig. 1;

Fig. 5 is a side view of the feeder of Fig. 4;

Fig. 6 is a view of the feeder in the direction 6 in Fig. 5;

Fig. 7 is a view of the feeder from the direction 7 in Fig. 5;

Figure 8 is a section along the line 8 - 8 in Fig. 5;

Fig. 9 is a view of the feeder from the direction 9 in Fig. 7;

Fig. 10 is a plan view of the feeder of Fig. 5;

11 shows the standard set for sphericity determination according to Rittenhouse;

FIG. 12 shows an exemplary continuous mixer; FIG.

FIG. 13, like FIG. 8, only with upstream continuous mixers; FIG.

FIG. 14, like FIG. 10, only with upstream continuous mixers; FIG.

Fig. 15 as Fig. 8, only with continuous mixers instead of the drums used in Fig. 8 and

16 shows a continuous mixer combined with a drum.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location details selected in the description, such as th, laterally, etc. related to the immediately described and illustrated figure and are to be transferred to a new position in a position change accordingly. Furthermore, individual features or combinations of features from the illustrated and described different exemplary embodiments can also represent independent, inventive or inventive solutions.

All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all subareas start with a lower one

Limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.

It should also be noted that the figures are described across the board.

According to FIGS. 1 and 2, a device 1 according to the invention has a double belt press with a lower belt 2 and an upper belt 3. The illustrated device 1 further comprises a charging device 4, which, as can be seen from FIGS. 1 to 10, comprises two drums 5 and 6. The drums 5 and 6 are each rotatably mounted about their longitudinal axes, which are provided in Figs. 6 and 7 with the reference numerals al and a2. The drums 5 and 6 can, as shown, be of similar design.

In each of the drums 5 and 6, a filling mixture is filled, which color particles are added. The filling mixture may, for example, have at least 60% of stone material, in particular stone meal, with a particle size of 1 μm to 10 mm. Furthermore, polymers are added as binders to the filling mixture. In particular, the filling mixture can be composed, as it has become known from the aforementioned WO 2010/115225. Thus, as binders polyester, polyurethane or epoxy resins may be provided, and the molding compound 85% to 95% filler and 5% to 15% binder. The filler may preferably consist of stone material, marble powder, quartzite, quartz or a mixture thereof and have a particle size of 1 μιη to 10 mm. The number of drums 5 and 6 can be varied according to the number of desired colors for the artificial stone slab 7 to be produced. According to a preferred variant of the invention, a granulate of a color is produced with a drum 5 and 6, wherein the colors of the granules produced with the drums 5 and 6 differ from each other. Thus, for example, a granulate of white color can be produced with the drum 5 and a granulate of black color can be produced with the drum 6.

The drums 5 and 6 may have drivers mounted in their interior, which are provided with the reference numerals 8 and 9 in FIG. The drivers 8, 9 may, for example, have the form of strips.

The filling material is filled into inlet openings of the drums 5 and 6 and granulated in the drums 5 and 6 by rotation of the drums 5 and 6 until a granule is obtained from the filling material whose particle size has a given sphericity and specific grain size.

The number of rotations of the drums 5 and 6 per unit time or the energy supplied determine the desired properties of the resulting granules. Preferably, the resulting granules leaving the respective drum 5, 6 have a Rittenhouse sphericity of 0.75-0.97 and a grain size of between 5 and 30 mm. FIG. 11 shows the standard set for determining the sphericity according to Rittenhouse. Due to the grain size of the granules and the size of the corresponding colored surfaces of the artificial stone slab 7 can be influenced in a simple manner. By an inclined arrangement of the drums 5, 6, the granules produced, which has the above-mentioned properties, can fall out of the corresponding drum 5 or 6. The colored granules 10 and 11 emerging from the drums 5 and 6 are applied to a distributor device 11 via a feed device 10 having a receiving region and a delivery region. The feeder 10 may be formed, for example, funnel-shaped or as a funnel. In the embodiment of the invention shown here, the distribution device 11 fed by means of the delivery device 10 is arranged below the outlet openings of the drums 5 and 6. The distribution device 11 may be formed, for example, as a driven turntable, as shown in FIG. 3 can be seen.

By a rotation of the turntable 11 about a normal to its surface extending axis ejected from the drums 5, 6 and impinging on the turntable 11 particles of granules of different colors are homogeneous across the width of the lower belt 2 and over the width of the lower belt. 2 distributed upstream conveyor belt 12. Instead of using the conveyor belt 12, which is upstream of the double belt press, the granules could also be distributed directly on the lower belt 2. In this case would be dispensed with the conveyor belt 12 and the lower belt 2, which would take over the function of the illustrated conveyor belt 12, would be longer than the upper belt 3 of the double belt press.

The turntable 11 can have a surface coated with an elastomeric material, for example rubber, in order to better distribute the granulate on the lower belt 2 or the conveyor belt 12.

As shown in Fig. 4, the turntable 11 may be partially surrounded by a diaphragm 15 in the circumferential direction. The aperture 15 may be open in the transport direction of the lower belt 2 and the conveyor belt 12, as can be seen in FIG.

The granules distributed homogeneously on the lower belt 2 or the conveyor belt 12 can be compacted by means of supercharging rollers 13 and 14 (FIGS. 3, 4, 10) to form a plate-shaped preform of defined height. Subsequently, the preform is pressed in the double belt press to the plate 7, wherein under double belt press heating element for curing the plate 7 may have.

For the production of two-component plates, the granules can also be applied to a fabric-like carrier, in particular a fiber mat, and pressed.

FIG. 12 now shows an exemplary continuous mixer 16, which comprises a tubular housing with a shaft 17 arranged therein and rotatably mounted, in longitudinal section and cross section. On the shaft 17 are a plurality of obliquely aligned with the shaft 17 blades 18 arranged. Furthermore, the continuous mixer 16 (in particular its housing) comprises a first filling opening 19, an outlet opening 20 spaced therefrom in the longitudinal direction of the at least one shaft 17, and a second filling opening 21 arranged between the first filling opening 19 and the outlet opening 20.

The continuous mixer 16 may be used for mixing a substance filled in the first filling opening 19 and a substance filled in the second filling opening 21, wherein the mixture at the outlet opening 20 can be removed. It is therefore advantageous if the distance between the first filling opening 19 and the second filling opening 21 corresponds to the length which requires that material for forming a constant vortex, for which the first filling opening 19 is specified. At the second filling opening 21 there is then a stable vortex of the substance introduced into the first filling opening 19, whereby a mixing with the substance introduced into the second filling opening 21 succeeds particularly well. Instead of more or less pure substances or materials, it is of course also possible for any mixtures thereof to be introduced into the first filling opening 19 and / or into the second filling opening 21.

As can be seen from FIG. 1, the first and the second filling openings 19, 21 as well as the outlet opening 20 are aligned transversely to the at least one shaft 17 (in this example, even normal thereto), the first and the second filling opening 19, 21 are arranged opposite the outlet opening 20 substantially rotated by 180 °. In this way, the materials can be filled by gravity in the flow mixer 16 and the resulting mixture by means of gravity from the continuous mixer 16 are removed.

In this example, the blades 18 each comprise an angle of substantially 180 ° and are aligned in their entirety along a helical line having a constant pitch. Although this results in a particularly good mixing of the fed into the continuous mixer components, of course, other designs and arrangements of the blades are conceivable. For example, they may have an angle of, for example, only 30 ° and be arranged along a helical line of variable pitch, in particular along a helix with an incline increasing to the outlet opening 20. In the continuous mixer 16 shown in FIG. 12, the cross section of the first filling opening 19 is smaller than the area of the circle to which the blades 18 are inscribed. For a good mixing of the components, it has also proved to be advantageous if the cross section of the first filling opening 19 substantially corresponds to the area of that circle, which the blades 18 are inscribed, and the second filling opening 21 is smaller than the first filling opening 19.

Advantageously, the blades 18 consist at least in sections of a mixture of a mineral filler, in particular rock, and a polymeric binder, in particular resin. It is particularly advantageous if the blades 18 are made of the same material for whose production the continuous mixer 16 is specified. As a result, the quality of the intermediate used for the production of artificial stone by unavoidable abrasion of the blades or even breakage thereof is not or only slightly affected. With the continuous mixer 16, it is now possible to produce a mixture of starting materials, which contains the artificial stone to be produced. This mixture can be supplied to the drums 5, 6 of the device already described in order to produce artificial stone therefrom. For this purpose, a continuous mixer 16 is ever upstream of a drum 5, 6 for feeding the same. FIG. 13 shows an exemplary device with only the continuous mixer 16 upstream of the drum 5 being visible.

In the filling openings 19 and 21, the starting materials to be mixed are filled. For example, a mineral filler, in particular rock, is introduced into the first filling opening 19, and a polymeric binder, in particular resin, is introduced into the second filling opening 21. The finished mixture falls from the outlet opening 20 on a chute and from there into the drum 5. Thus, the quality of the mixture produced in the continuous mixer 16 can be well assessed, especially visually or by sampling. Visual control would also be possible, for example, when the mixture is transported over a transparent tube. Of course, the use of opaque pipes is possible, if a constant visual inspection is not required.

The mixture is now granulated in the drum 5 in the manner already described above and then pressed into an artificial stone. The function of the arrangement shown in FIG. 14 is virtually identical to the function of the arrangement shown in FIG. In contrast, the flow mixer 16 are not aligned transversely to the conveyor belt 12, but along it. Under certain circumstances, certain guidelines for setting up the device can be better met in this way.

FIG. 15 now shows arrangements which are similar to the arrangements shown in FIGS. 8 and 13, respectively, but the use of drums 5 and 6 is dispensed with in FIG. Instead, the materials supplied to the continuous mixer 16 are granulated directly in the continuous mixer 16 and then pressed in the manner already described to artificial stone plates or two-component plates.

Finally, a variant is conceivable in which the function of the continuous mixer 16 and the function of the drums 5, 6 are combined in one device. 16 shows an example of this. In this case, a drum 5 is connected by means of a plurality of radial arms directly to the shaft 17 of the continuous mixer. The bearing at the right end of the shaft 17 is connected in a similar manner via a plurality of radial arms to the housing of the continuous mixer. In this way, the blades 18 rotate synchronously with the drum 5, so that the filled into the first filling port 19 component is mixed and mixed at the second filling opening 21 with the component filled there, so that in the drum 5, a more or less homogeneous mixture of mentioned components and granulated there.

In order to achieve different rotational speeds of the shaft 17 and the drum 5, 16 may also be provided in a further variant of the continuous mixer that between the shaft 17 and the drum 5, a transmission, in particular a planetary gear is provided. It is also conceivable, for example, that the arranged in an axis shaft 17 and the drum 5 are connected to each other neither directly nor via a transmission, but are driven by two separate motors.

For example, the presented continuous mixer can be used in an arrangement according to FIG. 15. It would also be conceivable, however, to arrange the combined continuous mixer along the conveyor belt 12 and directly above it (see also FIG. 14). In this way creates a particularly compact arrangement. If a plurality of continuous mixers are required, they can be set slightly inclined relative to the conveying direction of the conveyor belt 12 and arranged next to one another, such that the granules produced in the various continuous mixers fall successively onto the conveyor belt 12. Of course, distribution devices 11 can be arranged under the respective continuous mixers.

In general, it should be noted that the mixing of the constituents in the examples shown in FIGS. 13, 14 and 16 is not limited to the continuous mixer 16, but to a certain extent also takes place in the drums 5, 6. Likewise, the granulation process is not necessarily limited to the drum 5, 6, but may to a certain extent begin already in the continuous mixer 16. The boundaries between the mixing process and the granulation process are therefore fluid. By an appropriately sized flow mixer 16, it is certainly possible that in the drum 5, 6 almost completely mixed, get rid of the necessary ingredients for the granules.

The exemplary embodiments show possible embodiments of the device according to the invention and the method according to the invention, it being noted at this point that the invention is not restricted to the specifically illustrated embodiments thereof. Further, various combinations of the individual embodiments are possible with each other, these variations are due to the teaching of the technical action of the subject invention in the skill of those working in this technical field expert.

REFERENCE NUMBERS

1 device

 2 subband

 3 upper band

 4 feeder

 5 drum

6 drum

 7 artificial stone plate

 8 drivers

 9 drivers

 10 feeder

11 distribution device; turntable

 12 conveyor belt

 13 supercharger roller

 14 pre-compression roller

 15 aperture

16 continuous mixer

 17 wave

 18 scoops

 19 first filling opening

 20 outlet opening

21 second filling opening al axis

a2 axis

Claims

Patent claims A continuous mixer (16) comprising at least one rotatably mounted shaft (17) with a plurality of blades (18) arranged on the shaft (17) and oblique to the shaft (17), a first filling opening (19) and one longitudinally thereof at least one shaft (17) spaced outlet opening (20), characterized by a between the first filling opening (19) and the outlet opening (20) arranged second filling opening (21). 2. Continuous mixer (16) according to claim 1, characterized in that the distance between the first filling opening (19) and the second filling opening (21) corresponds to the length which requires that material for forming a constant vortex, for which the first filling opening ( 19) is specified. 3. Continuous mixer (16) according to claim 1 or 2, characterized in that the first and the second filling opening (19, 21) and the outlet opening (20) are aligned transversely to the at least one shaft (17), wherein the first and the second filling opening (19, 21) opposite to the outlet opening (20) are arranged substantially rotated by 180 °. 4. Continuous mixer (16) according to one of claims 1 to 3, characterized in that the blades (18) each comprise an angle of substantially 180 °. 5. continuous mixer (16) according to one of claims 1 to 4, characterized marked, that the blades (18) are aligned in their entirety along at least one helical line. 6. Continuous mixer (16) according to claim 5, characterized in that the at least one helix has a constant pitch. 7. Continuous mixer (16) according to one of claims 1 to 6, characterized in that the cross section of the first filling opening (19) substantially corresponds to the surface of that circle, which the blades (18) are inscribed. 8. continuous mixer (16) according to one of claims 1 to 7, characterized in that the second filling opening (21) is smaller than the first filling opening (19). 9. Continuous mixer (16) according to one of claims 1 to 8, characterized marked, that the blades (18) at least partially consist of a mixture of a mineral filler and a polymeric binder. 10. Continuous mixer (16) according to claim 9, characterized in that the blades (18) consist of the same material, for the production of the continuous mixer (16) is specified. 11. blade (18) for a continuous mixer (16) according to claim 9 or 10 with a mounting region for mounting the blade (18) on a shaft (17) of the continuous mixer (16), characterized in that the blade (18) at least in sections consists of a mixture of a mineral filler and a polymeric binder. 12. An apparatus (1) for producing a stone (9) made of artificial stone material with a double belt press with a lower belt (2) and a top belt (3), the device comprising a loading device (4) for feeding the double belt press with a material for the plate ( 9), characterized in that the charging device (4) comprises at least one continuous mixer (16) according to one of claims 1 to 10. 13. Device (1) according to claim 12, characterized in that the loading device (4) at least one about its longitudinal axis (al, a2) rotatable drum (5, 6) and a respective continuous mixer (16) according to one of claims 1 to 10 per drum (5, 6), wherein each one continuous mixer (16) each precedes a drum (5, 6) for feeding the same. 14. Device (1) according to claim 13, characterized in that between the Outlet opening (20) of a continuous mixer (1) and each of a drum (5, 6) a chute or an at least partially transparent tube is arranged. 15. Device according to one of claims 12 to 14, characterized in that below the outlet opening (20) of the continuous mixer (1) or under an outlet opening of the drum (5, 6) a distribution device (11), in particular a turntable, for distributing a the continuous mixer (16) or from the drum (5, 6) exiting granules is provided. 16. A method for producing an intermediate product for the production of artificial stone, characterized in that the at least one shaft (17) of a continuous mixer (1) according to one of claims 1 to 10 rotation is offset and in the first filling opening (19) mineral filler and in the second filling opening (21) a polymeric binder is filled. 17. The method according to claim 16, characterized in that the intermediate product has a proportion of the mineral filler of at least 60% and / or a particle size of the mineral filler 1 μιη to 10 mm. 18. The method according to claim 16 or 17, characterized in that in a run through mi shear (16) running granulation process from the filling mixture granules is produced. 19. The method according to claim 16 or 17, characterized in that the intermediate product of a drum (5, 6) supplied and a granulation process is carried out in a running there granulation process from the filling mixture. 20. The method according to claim 18 or 19, characterized in that the granulation process is carried out until the particles of the granules produced have a predetermined sphericity. 21. The method according to claim 20, characterized in that the granulation process is carried out until the particles have a sphericity of Rittenhouse of 0.75 -0.97. 22. The method according to any one of claims 18 to 21, characterized in that the granulation is carried out until the particles of the granules have a particle size with a diameter of 5 mm - 30 mm. 23. A method for producing a plate (9) made of artificial stone material consisting of a mineral filler and a polymeric binder, characterized in that in a first step, an intermediate product according to any one of claims 16 to 22 is prepared, which in at least one further step is pressed to the plate (9). 24. The method according to claim 23, that the intermediate product is applied to a fabric-like carrier, in particular a fiber mat. 25. Artificial stone slab (9) or two-component slab, characterized in that it is produced by a method according to one of claims 23 or 24.