EP3928923A1 - Method for the treatment of the surface of a rock and / or concrete surface - Google Patents

Abstract

A device (1000) and a method for surface treatment of a rock and/or concrete surface is disclosed. A transport unit (5) moves at least one workpiece (1) to be processed along a throughput direction (D1). A processing machine (2) has at least one surface processing element (3₁, 3₂,..., 3_N) which is relative to a surface to be machined (100) of the workpiece (1) is movable. A holder (7) for the at least one surface treatment element (3₁, 3₂,..., 3_N) is provided, wherein in the holder (7) rotates the at least one surface treatment element (3₁, 3₂,..., 3_N) around the axis of rotation (R1 or R2 ) is rotatably mounted. At least one first translation drive (10) is provided, which drives the at least one surface treatment element (3₁, 3₂,..., 3_N). oscillating in a direction of movement (R_s) and perpendicular or at an angle of incidence (301) to the direction of passage (D1) within a transport plane (11) of the processing machine (2).

Description

The invention relates to a device for surface treatment of a stone and / or concrete surface. In particular, the device comprises at least one transport unit which moves at least one workpiece to be processed along a passage direction. Furthermore, at least one processing machine is provided which has at least one surface processing element which can be moved relative to the surface of the workpiece to be processed. The at least one surface processing element can be rotated about an axis of rotation at least during direct mechanical contact with the surface to be processed and is thus in grinding contact with the surface to be processed.

The invention also relates to a method for surface treatment of a stone and / or concrete surface.

the German patent application DE 1 959 070 relates to an assembly line brush device for mold plates. Brushes are provided for the side edges of the mold plates. A roller brush can be adjusted with regard to the desired number of revolutions.

the Italian patent application IT UB20 152 394 A1 relates to the treatment of the surface of ceramic tiles and a grinding brush machine for this purpose. The machine has a number of processing tools, which can be formed, for example, by discs made of abrasive material or ring brushes. The machining tools are carried at the ends of the shafts.

The international patent application WO 2015/144274 A1 relates to a method and a device with brushing, grinding and polishing tools that rotate centrally or eccentrically and at the same time orbit planet-like and possibly oscillating. The stepless rotation and at the same time the stepless orbit of an unlimited number of tool heads takes place via two guide-free Drive chain assemblies each having a frequency controlled motor and an outer and inner chain belt.

The US patent U.S. 2,680,938 A relates to a device for conditioning metal webs.

the German patent application DE 30 31 411 A1 relates to a projection screen and its manufacturing process. For this purpose a rough surface is moved over the surface of the element by a brush which is in contact with the surface of the element.

The Chinese patent application CN 107 855 889 A describes a deburring machine. The deburring machine comprises a machine base, a conveyor device for conveying a workpiece, a universal roller brush grinding machine head for deburring edges and holes of the workpiece and a grinding belt grinding machine head for grinding the workpiece surface arranged on the machine. The universal roller brush grinder head and the sanding belt grinder head are both located above the conveyor. By combining the universal roller brush grinder head and the grinding belt grinder head, the surface treatment process can be ended while the workpiece is passing the conveyor.

the German patent application DE 100 31 812 A1 relates to a method and a device for producing concrete blocks. In order to enable the production of concrete blocks with an aesthetically pleasing surface structure, it is proposed that brooms be moved back and forth by a drive in a direction perpendicular to the feed direction and parallel to the surface of the concrete blocks, brushing over the surface of the advanced concrete blocks. The amplitude and frequency of the reciprocating movement of the brooms can be varied irregularly.

the German patent DE 10 2004 063 903 B4 relates to a stone surface processing machine for the production of concrete blocks to be reworked. With the action of a brush or milling cutter, a structured Surface generated. By means of an electropneumatic control, a tool carrier with tools such. B. brushes, according to the power consumed by the stone surfaces and the different stone heights, such as the concrete blocks removed from the stone paver, can be tracked with almost even contact pressure.

The devices for surface treatment of a stone and / or concrete surface are also referred to as curling machines.

Processes already known from the prior art are generally continuous processes. There can be tunnel structures above the transport system or the transport level, which can accommodate the corresponding curling stations.

A curling station known from the prior art can consist of a mounted shaft which is driven by a direct or indirect motor drive. On the shaft (axis of rotation) there can be round brushes (roller-shaped elements) with a diameter of 350mm, for example, made of resistant, coated plastic bristles. The round brushes work at a speed of 600 revolutions per minute, for example, and act on the surface of the workpiece.

The shaft can offer a machining width of up to 1200mm with an overhang of 50mm per side. The drive train is adjusted in height, for example, by a servomotor with a mounted shaft.

In particular, devices known from the prior art (which are or include curling stations) have several, for example two, particularly preferably four, curling stations or rotary brushes that are inclined differently to one another in the horizontal direction and / or offset from one another.

Such an angle of the individual stations can be defined in that the polishing brushes rotate about an axis of rotation and the axes of rotation are adjusted at an angle to one another in the horizontal direction.

Each of the rotary brushes generates grinding and / or polishing grooves on the surface to be processed, which create a corresponding directional gloss effect of the surface in the direction and from the point of view of these grinding and / or polishing grooves.

Among other things, it is known from the prior art to select a set of brushes which protrudes at least 5 cm per side over a stone and / or concrete surface to be processed. In this case, polishing and / or other surface treatment is implemented by means of an effective treatment length of the brush reduced by 10 cm on both sides, with a separate set of brushes often having to be created for each format and product, i.e. per shape and per stone and concrete surface. This means that corresponding round brushes often have to be replaced not only because of wear, but in particular also because of different machining requirements. This can be very time consuming. In order to be able to produce different grinding directions on the workpiece, as a rule several, in particular four, surface processing elements had to be switched one behind the other and also at an angle to one another.

It is therefore an object of the present invention, inter alia, to offer a device for the surface treatment of a rock and / or a concrete surface, which permanently ensures the same quality of the surface treatment and is more cost-effective than devices of the prior art and has a simple structure.

This object is achieved by a device with the features of claim 1.

Another object of the invention is to offer a method for the surface treatment of a stone and / or a concrete surface, which is not only easy to carry out, but also inexpensive and at the same time applicable to a wide variety of stone and / or concrete surfaces, while providing permanent high-quality processing the stone and / or concrete surfaces guaranteed.

This object is achieved by a method having the features of claim 12.

The device according to the invention described here for processing the surface of a stone and / or concrete surface comprises at least one transport unit which moves at least one workpiece to be processed along a direction of passage. Furthermore, the device comprises at least one processing machine which has at least one surface processing element which can be moved relative to a surface of the workpiece to be processed. The at least one surface processing element, which rotates about an axis of rotation at least during direct mechanical contact with the surface to be processed, is in grinding contact with the surface to be processed. A holder is provided for the at least one surface treatment element, the at least one surface treatment element being mounted on the holder so as to be rotatable about the axis of rotation. A first translation drive is provided on the holder and moves the at least one surface processing element in a direction of movement in an oscillating manner and transversely to the direction of passage within a transport plane of the transport unit. "Transverse to the direction of flow" is to be aligned so that the at least one surface processing element can be moved with its axis of rotation perpendicular to the direction of flow or with its axis of rotation at an angle of incidence to a perpendicular to the direction of flow in an oscillating manner. It should be noted that the setting angle of the at least one surface processing element can also be changed while the stone and / or concrete surface is being processed. This has the advantage that any processing pattern can be set so that no preferred direction of processing is visible on the stone and / or concrete surface to be processed.

According to a possible embodiment of the invention, the holder can also be moved in an oscillating manner and parallel to the direction of passage. A second translation drive is provided for the holder for this purpose. This embodiment allows the processing pattern of the stone and / or concrete surface to be varied further.

According to one embodiment, the holder has a guide, along which the at least one surface processing element can be moved with the first translation drive in an oscillating manner in a direction of movement and transversely to the direction of passage. It goes without saying for a person skilled in the art that the expression “transverse to the direction of passage” defines the direction perpendicular to the direction of passage as well as a direction which includes an angle (angle of attack) to the direction of passage that is set as required. The angle can also be changed according to a predefined pattern while the workpiece is being machined. A corresponding control with assigned sensors is provided for this purpose.

According to a possible embodiment of the invention, a pivotable plate is provided on the holder, which carries the guide and interacts with a pivot drive, with which the angle of attack of the at least one roller-shaped surface processing element can be set and optionally adjusted as required. The first translation drive moves the at least one surface processing element in an oscillating manner in the direction of movement at the angle of attack and transversely to the direction of passage. The oscillating process of the at least one surface processing element at an angle of incidence and transversely to the direction of passage has the further advantage that no tool-induced processing effects can be seen from any direction of view of the surface of the stone or concrete workpiece.

According to one possible embodiment, the guide is connected to the holder. A swivel wheel is provided over the guide. The wheel itself interacts with a swivel drive, with which an angle of attack of the at least one roller-shaped surface processing element can be set. The first translation drive moves the at least one surface processing element oriented at the angle of attack in an oscillating manner in the direction of movement perpendicular to the direction of passage.

According to one embodiment of the invention, an adjustment drive is assigned to the at least one surface treatment element. With the adjustment drive, the at least one surface processing element can be perpendicular to the surface of the at least one workpiece can be moved so that an almost uniform contact pressure can prevail on the workpiece, regardless of the wear and tear of the at least one surface processing element (abrasion of the bristles of the surface processing element).

According to a possible further embodiment, a rotary drive is provided for the at least one surface treatment element. The rotary drive can be assigned individually to each surface treatment element or several surface treatment elements can be mechanically coupled to a rotary drive. In the event that at least two surface processing elements are each provided with a rotary drive, they can be driven synchronously with respect to direction and / or time.

According to at least one possible embodiment, the at least one surface processing element is a roller-shaped element which can be rotated about the axis of rotation parallel to the transport plane.

According to at least one possible further embodiment, the at least one surface processing element can be a grinding cup element which can be rotated with the axis of rotation perpendicular to the transport plane.

According to at least one further embodiment, at least one of the surface processing elements is a roller-shaped element that can be rotated about the axis of rotation parallel to the transport plane, and at least one of the surface processing elements is a cup grinding element that can be rotated with the axis of rotation perpendicular to the transport plane.

According to a possible embodiment of the invention, the roller-shaped elements designed as surface processing elements are each arranged in pairs with respect to one another along the direction of passage. The pair of surface treatment elements consists of two surface treatment elements which, for. B. each mirror-symmetrically relative to the direction of movement, which is perpendicular to the direction of passage, are employed to each other. It is conceivable that one, two or more pairs for processing the surface are arranged along the direction of passage.

According to one embodiment of the invention, at least one control unit is provided which, if present, is communicatively connected to the second translational drive of the holder, an adjustment unit for the surface treatment elements and the drive of the transport unit. Furthermore, at least one sensor is assigned to the transport unit, which provides feedback to the control unit with regard to the speed of the transport unit. At least one further sensor is assigned to the holder, which monitors the oscillatory movement of the holder in the directions of movement.

According to a possible embodiment of the invention, the feed speed of the workpiece with a stationary holder for the at least one surface processing element in the direction of passage is at least 0.5 m / min and at most 10 m / min, preferably at least 2 m / min and at most 6 m / min. As already mentioned above, the workpiece is moved at the feed speed along the direction of passage. In addition, the surface processing element is moved back and forth over the workpiece in a transverse direction with a previously set oscillation frequency.

According to a possible further embodiment of the invention, the holder is arranged in a guide such that it can be displaced in / or against the direction of passage. The bracket is z. B. moved with the second translation drive by means of the guide along the passage direction. With the guide, a movement of the holder at an angle within a transport plane of the processing machine can be made possible. For example, an oscillation of the surface processing element (brushes as roller-shaped elements) can thereby take place perpendicularly and / or at an angle to the direction of passage.

The method according to the invention described here for surface treatment of a stone and / or concrete surface initially comprises a first step, by means of which a workpiece to be machined is provided which forms the stone and / or concrete surface to be machined. The workpiece to be machined can be a raw workpiece (with a completely unmachined surface) or a workpiece that has already been pre-machined. For example, the workpiece is a concrete slab and / or a paving stone.

After the workpiece to be processed has been provided, a processing machine is provided in a next step which has at least one surface processing element by means of which the surface of the workpiece is processed by mechanical surface removal. The surface processing element is at least rotated about an axis of rotation during direct mechanical contact of the surface of the workpiece to be processed in order to produce the grinding contact with the surface of the workpiece to be processed by this rotation. The surface treatment described above is preferably produced solely by the mechanical surface removal of the at least one surface treatment element. For the surface treatment, it is necessary to bring the at least one surface treatment element (rotatable) mounted in a holder into contact. The at least one surface processing element is impressed with a movement in a direction of movement, oscillating and perpendicular, or at an angle of incidence to the direction of passage of the workpiece within a transport plane of the processing machine.

According to a further possible embodiment of the method, the holder can also be moved in a direction of movement in an oscillating manner and parallel to the direction of passage.

The movement patterns of the surface processing elements and / or the holder have the advantage that the surface processing elements are worn evenly and that preferred optical directions for processing the stone and / or concrete surface are avoided.

The axis of rotation of the surface treatment element, which is in the form of a roller-shaped element, can, for. B. be employed according to a possible embodiment substantially perpendicular to or at an angle to the direction of passage. The at least one surface processing element is arranged in a holder, wherein, according to a preferred embodiment, the at least one surface processing element by means of a first translation drive in a Direction of movement is driven perpendicular to the direction of passage within a transport plane of the processing machine.

With this arrangement, for example, the at least one surface treatment element can oscillate perpendicularly and / or at an angle to the direction of passage.

According to a possible embodiment, the at least one surface processing element can be designed as a roller-shaped element that is rotated around the axis of rotation parallel to the transport plane and / or the at least one surface processing element can be a cup grinding element that is rotated with the axis of rotation perpendicular to the transport plane.

According to at least one possible embodiment, the first translational drive, the second translational drive (if present), the rotary drive and the swivel drive are implemented by means of an electric motor. Some of the drives are installed on the bracket so that they are moved along with them, especially in the direction of passage. The first translation drive is arranged in a stationary manner on a transport unit, with which the surface processing element is moved along the direction of passage.

"Mechanical surface removal" includes any material removal from the surface of the workpiece. This also includes polishing and mechanical removal in deeper layers of the surface of the workpiece. For example, mechanical material removal within the meaning of the invention does not include milling and / or drilling. The mechanical removal of material preferably produces a polished and / or machined surface which has machining grooves. However, these machining grooves are preferably only recognizable to the external observer as polishing grooves which are produced, for example, by the bristles of a rotary brush. Corresponding polishing directions can therefore be seen in particular under corresponding lighting conditions. In addition, mechanical material removal can also include filing.

In the context of the invention, “polishing” means a process in which the state of the polished surface changes from a, for example, matt surface with only minor Light reflection is polished to a, in particular in at least one viewing direction shiny surface with strong light reflection. In the context of the invention, “mechanical material removal” also means satinizing and / or brushing.

According to at least one possible embodiment, in addition to the rotation, the surface processing element experiences at least one drive in a drive direction different from a direction of rotation. In other words, this invention proposes, among other things, that instead of merely rotating the surface processing element about the axis of rotation, the surface processing element experiences further movement (oscillation) in addition to the rotation, and in particular also independently of the rotation.

It is conceivable that the processing machine comprises a control with a selection and / or setting element, by means of which the drive can be selected. However, it is also conceivable that a drive direction (that is, the direction of movement perpendicular or transverse to the direction of passage) can be achieved by different drive elements, in particular by different motors.

Through the drives of the corresponding surface processing element proposed here, among other things, it can therefore be achieved in a particularly individual and cost-effective manner that a surface processing of the workpiece, in particular a polishing, can be carried out depending on the wishes of the processor and the requirements, in particular without corresponding brushes have to be replaced. The first translation drive, possibly the second translation drive and the swivel drive enable the polishing direction and / or the polishing depth to be individually adjusted in addition to the actual grinding properties of the rotational movement of the surface treatment element. With the first translation drive, possibly the second translation drive and the swivel drive, an individual setting of satin finishing and / or brushing can also be carried out. One and the same brush and / or one and the same brush set for all workpieces can therefore be used particularly advantageously for the surface treatment described above.

According to at least one embodiment, a workpiece to be processed is first provided, which forms the stone and / or concrete surface to be processed, with a processing machine being provided in a subsequent step or a step arranged in front of it, which has at least one surface processing element, by means of which by mechanical surface removal the surface is machined, the surface machining element being rotated about an axis of rotation at least during direct mechanical contact with the surface to be machined in order to produce the grinding contact with the surface of the workpiece to be machined by this rotation.

In a variant according to the invention, in addition to the rotation of the surface processing element, this surface processing element experiences at least one drive in a drive direction different from a direction of rotation. This drive direction is preferably not a rotation of the surface treatment element. The second translation drive preferably generates a movement of the at least one surface treatment element in a linear or curved shape relative to the device mounted on the hall floor. This linear or curved shape of the movement of the at least one surface treatment element is achieved by moving with a direction of movement oscillating along and parallel to the direction of passage and a direction of movement oscillating and perpendicular to the direction of passage.

According to at least one embodiment, the surface treatment element can be a rotary brush or a rotary grindstone.

In the case of a rotary brush, this can consist of a brush shaft (roller-shaped element) to which round brushes are attached. These round brushes can be with coated plastic brushes. The rotary shaft is preferably an elongated rod member.

For example, such a rotary brush has a diameter (including the brushes arranged radially around the rotary shaft of the rotary brush) of at least 100mm and at most 600mm, preferably at least 200mm and at most 400mm and very particularly preferably at least 300mm and at most 380mm.

According to at least one embodiment, the drive direction is different from a direction of passage and / or different from a direction of rotation of the workpiece and / or the direction of rotation of the surface processing element.

A passage direction in the sense of the method described above is preferably the direction along which the workpiece is guided through the processing machine with the transport unit and is processed during this. The direction of passage can be a straight and / or a curved or otherwise curved path.

According to at least one possible embodiment, the second translation drive of the holder for the surface treatment element is an oscillation drive in the direction of the passage direction. The first translation drive generates an oscillation drive for the surface processing element in the direction perpendicular or at an angle to the direction of passage.

For this purpose, the processing machine can have an electric motor which moves the holder of the surface processing element, for example in the direction of the passage direction. The oscillating movement creates a loop with at least one directional component that deviates from the direction of passage. Depending on the oscillation frequency and / or the throughput speed, reflective properties of the grooves can be adjusted.

The oscillation drive proposed here can be a drive in which the holder of the at least one surface processing element is moved back and forth, in particular periodically, along the drive direction and relative to the workpiece and / or relative to the processing machine. The drive direction can be a transverse direction which runs perpendicular to the direction of passage and along a horizontal transport plane. This is then preferably done on the basis of a so-called oscillation frequency, which can be adjusted in particular by means of the adjustment element described above.

According to at least one embodiment, the first translation drive and the second translation drive are operated as a function of one another, in particular such that the first translation drive and the second translation drive are electronically, pneumatically and / or mechanically coupled to one another.

According to at least one embodiment, the first translation drive and the second translation drive are mechanically coupled to one another via at least one connecting cam, in particular a camshaft, and / or a connecting gear.

The oscillation frequency is, for example, at least 0.2 Hz and at most 90 Hz, preferably at least 0.8 Hz and at most 45 Hz. This frequency range ensures that the surface of the workpiece does not suffer any structural damage during grinding. A higher frequency would produce strong transverse grooves, while too low a frequency would produce deep longitudinal grooves. Both extremes would be at the expense of the mechanical stability of the workpiece.

An oscillation length of the surface processing element transverse to the direction of passage (maximum pendulum amplitude) can be at least 3 cm to a maximum of 30 cm.

In addition, such an oscillation drive offers the advantage that any lateral machining projections of the surface machining element can be partially, but preferably completely, avoided. A processing projection of the surface processing element is such a length range of the surface processing element which, although it has polishing and / or brushing properties, remains partially or completely unused during operation. The embodiment described above can therefore partially or completely avoid such an unused machining area of the surface machining element.

In the case of a rotary brush, there is the additional advantage that the unused area of the rotary brush on the side of the workpiece is no longer in contact with laterally arranged rulers and / or a cooling liquid and / or a conveyed material and / or other elements of the processing machine positioned on the side of the workpiece comes into contact.

This was namely often observed in the past, since a distance between the rotary shaft of the rotary brush and the workpiece in the vertical direction, in particular with increasing use of the surface treatment element, had to be reduced more and more in order to still obtain a sufficient grinding effect. However, since the unused bristles remained unchanged in length in the protruding area (often even having a maximum length), these unchanged long brushes, in contrast to the used area of the rotary brush, intervened on the side of the workpiece, for example a ruler, which regularly led to destruction the ruler or even to the destruction of the conveyed material.

It is therefore also an advantage of the present invention to avoid such an unused bristle area.

For example, a length of the rotary brush can be selected to be shortened within the scope of the above claimed oscillation operation, i.e. a length along which the rotary brushes are arranged, namely in such a way that only through the oscillation operation a complete length and / or transverse and / or oblique coverage of the workpiece is achieved.

This is also possible in particular in that the corresponding length of the rotary brush is selected to be shorter than a (maximum) width and / or diagonal width of the workpiece. It is namely conceivable that the rotary brush is inclined at an angle of attack, relative to the direction of passage. Rotary brushes of this type are therefore arranged obliquely relative to the direction of passage, with the arrangement inclination thus arising can only be completely covered when a corresponding oscillation is carried out along the incline.

According to at least one embodiment, a rotation rate of the surface processing element about its axis of rotation is at least 200 rpm and at most 1200 rpm, preferably at least 400 rpm and at most 800 rpm, particularly preferably at least 500 rpm and at most 700 rpm .

The rotation rate described above and thus claimed by way of example therefore ensures that the workpiece to be machined and in particular the surface of the workpiece to be machined can be machined in a polishing manner.

In the context of the invention, “polishing” means a method in which the state of the polished surface is polished from a matt surface with only low light reflection, for example, to a surface that is shiny in at least one viewing direction and with strong light reflection. The same can apply to the process of satin finishing and / or polishing.

For the purposes of the invention, the only possible polishing material, for example, is the corresponding grinding surface of the surface treatment element. To this extent, only the rotary brushes described above can be used for polishing in one embodiment. Such a method would therefore be free of any further polishing steps and / or polishing agents.

Alternatively, however, it is conceivable that, in addition to the surface processing elements described above, a further processing step, for example as part of a coarse or fine polishing, is switched upstream of the surface processing element or after the surface processing element in the direction of passage.

According to at least one embodiment, the feed speed of the workpiece and / or the surface processing element in the direction of passage is at least 0.5 m / min and at most 10 m / min, preferably at least 2 m / min and at most 6 m / min.

This advance range can ensure that the stone and / or concrete surface does not initially break or experience other material damage. Another advantage, however, can also be seen in the fact that corresponding grinding artifacts (polishing direction, curling direction, etc.) can be defined particularly well and inexpensively.

According to at least one possible embodiment, at least two surface processing elements are arranged along the passage direction at the same or different angles relative to the passage direction, in particular with the two surface processing elements being driven synchronously with respect to direction and / or time.

For example, the two surface processing elements are moved together by means of the carriage along the direction of passage or at an angle within a transport plane of the processing machine. However, it is also conceivable that one surface processing element is moved at a first throughput speed and the other surface processing element is moved at a second throughput speed, the two speeds being different from one another. If both elements are attached to the slide, the distance between the two elements changes during the implementation. Several elements can also be moved at different speeds depending on or independently of one another.

In the context of the invention, a transport plane of the processing machine is a plane parallel to the horizontal direction (for example parallel to the direction of passage). The plane of transport can be essentially parallel to the earth's surface.

It is conceivable that a first surface processing element, for example in the form of the rotary brush, is rotated clockwise in the direction of passage and that a further surface processing element is subsequently operated counter to the direction of passage in the direction of passage. For example, the two surface treatment elements are driven with the same or different speeds. However, the number of revolutions is preferably the same in both directions. A contact pressure of the two surface processing elements in the direction of the workpiece is preferably essentially exactly the same, preferably within the scope of the manufacturing tolerance.

With reference to the accompanying drawings, the invention and its advantages will now be explained in more detail by means of exemplary embodiments, without thereby restricting the invention to the exemplary embodiment shown. The proportions in the figures do not always correspond to the real proportions, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.

Figur 1

eine schematische Seitenansicht einer Ausführungsform der Vorrichtung zur Oberflächenbearbeitung einer Gesteins- und/oder Betonoberfläche;

Figur 2

eine schematische Draufansicht einer anderen, möglichen Ausführungsfirm der Vorrichtung aus Figur 1 ;

Figur 3

eine perspektivische Ansicht einer Ausführungsform der Vorrichtung zur Oberflächenbearbeitung einer Gesteins- und/oder Betonoberfläche;

Figur 4

eine perspektivische Ansicht der Vorrichtung aus Fig. 3, wobei das mindestens eine Oberflächenbearbeitungselement einen geänderten Anstellwinkel zur Durchlaufrichtung besitzt;

Figur 5

eine perspektivische Ansicht einer andern Ausführungsform der Vorrichtung zur Oberflächenbearbeitung einer Gesteins- und/oder Betonoberfläche;

Figur 6

eine perspektivische Ansicht der Vorrichtung aus Fig. 4, wobei das mindestens eine Oberflächenbearbeitungselement einen geänderten Anstellwinkel zur Durchlaufrichtung besitzt;

Figur 7

eine schematische Draufansicht einer Ausführungsform der Anordnung des mindestens einen Oberflächenbearbeitungselements in Form eines walzenförmigen Elementes in der dafür vorgesehenen Halterung;

Figur 8

eine schematische Draufansicht der Anordnung des mindestens einen Oberflächenbearbeitungselements aus Fig. 7 in der dafür vorgesehenen Halterung;

Figur 9

eine schematische Draufansicht einer weiteren Ausführungsform der Anordnung von zwei Oberflächenbearbeitungselementen in Form von walzenförmigen Elementen in der dafür vorgesehenen Halterung;

Figur 10

eine schematische Draufansicht der Anordnung der zwei Oberflächenbearbeitungselemente aus Fig. 9 in der dafür vorgesehenen Halterung;

Figur 11

eine schematische Draufansicht einer weiteren möglichen Ausführungsform der Anordnung des mindestens einen Oberflächenbearbeitungselements in Form eines Topfschleifelements in der dafür vorgesehenen Halterung;

Figur 12

eine schematische Draufansicht einer zusätzlichen Ausführungsform der Anordnung von zwei Oberflächenbearbeitungselementen, wobei eines als Topfschleifelement und eines als walzenförmiges Element ausgebildet ist;

Figur 13

eine schematische Draufansicht einer Ausführungsform der Erfindung, bei der die Halterung in einem Schlitten geführt ist; und

Figur 14

eine schematische Seitenansicht einer möglichen Ausführungsform der Vorrichtung zur Oberflächenbearbeitung einer Gesteins- und/oder Betonoberfläche einer Steuereinheit zur Steuerung und/oder Regelung der Arbeitsweise der Vorrichtung.

They show in detail:

Figure 1

a schematic side view of an embodiment of the device for surface treatment of a stone and / or concrete surface;

Figure 2

a schematic top view of another possible embodiment of the device Figure 1 ;

Figure 3

a perspective view of an embodiment of the device for surface treatment of a stone and / or concrete surface;

Figure 4

a perspective view of the device from Fig. 3 , wherein the at least one surface treatment element has a changed angle of attack to the direction of passage;

Figure 5

a perspective view of another embodiment of the device for surface treatment of a stone and / or concrete surface;

Figure 6

a perspective view of the device from Fig. 4 , wherein the at least one surface treatment element has a changed angle of attack to the direction of passage;

Figure 7

a schematic top view of an embodiment of the arrangement of the at least one surface treatment element in the form of a roller-shaped element in the holder provided for this;

Figure 8

a schematic top view of the arrangement of the at least one surface treatment element from Fig. 7 in the holder provided for this purpose;

Figure 9

a schematic top view of a further embodiment of the arrangement of two surface treatment elements in the form of roller-shaped elements in the holder provided for this purpose;

Figure 10

Figure 3 is a schematic top view of the arrangement of the two surface working elements Fig. 9 in the holder provided for this purpose;

Figure 11

a schematic top view of a further possible embodiment of the arrangement of the at least one surface processing element in the form of a grinding cup element in the holder provided for this;

Figure 12

a schematic top view of an additional embodiment of the arrangement of two surface processing elements, one being designed as a grinding cup element and one as a roller-shaped element;

Figure 13

a schematic top view of an embodiment of the invention, in which the holder is guided in a slide; and

Figure 14

a schematic side view of a possible embodiment of the device for surface treatment of a stone and / or concrete surface of a control unit for controlling and / or regulating the operation of the device.

Identical reference symbols are used for elements of the invention that are the same or have the same effect. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures that are necessary for the description of the respective figure. The figures merely represent exemplary embodiments of the invention without, however, restricting the invention to the exemplary embodiments shown.

Figure 1 shows a device 1000 for surface treatment of a stone and / or concrete surface. The device 1000 comprises a transport unit 5, which guides and transports a workpiece 1 to be processed along a passage direction D1. The transport unit 5 can also comprise elements (not shown) for fixing or holding the workpiece 1. In addition, the device 1000 comprises a processing machine 2, which has at least one surface processing element 3 ₁ , 3 ₂ , ..., 3 _N , which is movable relative to the surface 100 to be processed, so that the surface 100 of the workpiece 1 can be processed by means of mechanical surface removal is, wherein the surface _{processing element 3 1} , 3 ₂ , ..., 3 _{N is} rotated at least during direct mechanical contact with the stone and / or concrete surface 100 to be processed about an axis of rotation R1 in order to achieve the grinding contact with the to produce stone and / or concrete surface 100 to be processed.

In addition to a rotation of the at least one surface _{processing element 3 1} about the axis of rotation R1, it is also shown that the surface processing element 3 _{1 is driven} in the direction of the blade as part of a present oscillating drive along a drive _{direction R S.} In the present exemplary embodiment, the surface treatment _{element 3 1 is shown} in the form of a roller-shaped element / rotary brush) with a corresponding rotary shaft and corresponding rotary bristles 4.

The workpiece 1 is moved at a feed rate V1 along the direction of passage D1. In addition, a mount is reciprocated 7 for the at least one surface machining element 3 ₁ with a preset oscillation frequency in a direction R _S vertically above the workpiece 1 and forth.

It should be noted that the in Figure 1 embodiment shown, only a first surface treatment _{element 3 1 is} provided, which is designed in the form of a roller-shaped element (rotary brush). The number of surface treatment elements described in this embodiment 3 ₁ , 3 ₂ , ..., 3 _N , only serves to describe the invention and should not be construed as a limitation of the invention. The angle of attack 301 (see Figure 2 ) of the first surface _{processing element 3 1} with respect to the direction of passage D1 is zero degrees with this setting of the processing machine 2. It is also understood that the extent of the angle of attack 301 should not be interpreted as a limitation of the invention.

At the in Figure 2 The illustrated embodiment of the processing machine 2 shows a first surface processing element 3 ₁ and a second surface _{processing element 3 2} . Also, in the embodiment described here, the number of surface working members 3 _1, 3 _2, serves, ... 3 _N for purposes of describing the invention and should not be construed as a limitation of the invention. The first surface treatment _{element 3 1} , which is designed as a roller-shaped element (rotary brush), is employed at a first angle of incidence 301 with the axis of rotation R1 in relation to a perpendicular S to the direction of passage D1. A second surface treatment _{element 3 2} is also in the form of a roller-shaped element (Rotary brush) and that the amount with the same angle of attack 301, but adjusted in the opposite direction accordingly. Such a setting angle 301 of this second surface processing element 3 ₂ is therefore to be understood as a negative setting angle relative to the perpendicular S. Both angles of incidence 301 therefore preferably cancel each other out and, apart from the number of degrees, are made exactly opposite to one another.

_{The surface processing elements 3 1} and 3 ₂ oriented with the corresponding setting angle 301 can, depending on the configuration of the processing machine 2, in the direction of movement R _p (parallel to the direction of passage D1) and in the direction of movement R _S (perpendicular to the direction of passage D1) or in a direction of movement R _p ( parallel to the passage direction D1) and in the direction of movement R _S (parallel to the axis of rotation R1 of the first surface treatment element 3 ₁ ) are moved in an oscillating manner.

The surface treatment elements 3 ₁ , 3 ₂ ,..., 3 _N are preferably arranged in pairs with respect to one another along the direction of passage D1, each pair of surface _{processing elements 3 1} , 3 ₂ , ..., 3 _N consists of two roller-shaped elements (rotary brushes), which are each set up mirror-symmetrically relative to the direction R _S to one another (as shown in FIG Figure 2 shown). It is conceivable that one, two or more pairs of surface _{processing elements 3 1} , 3 ₂ ,..., 3 _N for processing the stone and / or concrete surface 100 are arranged along the passage direction D1.

In this way, a workpiece 1, in particular on its rock and / or concrete surface 100, can be machined not only precisely, but also particularly inexpensively, in a cost-effective manner.

A possible embodiment of the device 1000 for surface treatment of a surface 100 of a rock and / or workpieces 1 made of concrete (eg floor slabs) is shown in FIG Figure 3 shown. A holder 7 for the at least one surface treatment element 3 ₁ , 3 ₂ ,..., 3 _N is provided above the transport plane 11 of the transport unit 5. The transport unit 5 is driven by a drive 6 in the transport direction D1. The surface machining element 3 _1, 3 _2, ..., _N 3 is mounted on the holder 7 about the rotational axis R1 for rotation which is parallel to the transport plane. 11 The holder 7 is part of a processing machine 2, which has at least one surface processing element 3 ₁ , 3 ₂ ,..., 3 _N. which is movable relative to the surface 100 of the workpiece 1 to be machined.

A second translational drive 9 (not shown here) can be provided if the holder 7 is also to be moved in an oscillating manner in a direction of movement Rp and parallel to the direction of passage D1. In the case of the Figures 3 - 6 In the illustrated embodiments, the holder 7 is stationary and the second translation drive 9 can be dispensed with. In this embodiment, a first translation drive 10 is assigned to a guide 25 on the holder 7. With this setting of the processing machine 2, the guide 25 is positioned perpendicular to the through-tube direction D1. The first translation drive 10 thus moves the one surface treatment element 3 ₁ , 3 ₂ ,..., 3 _N in a direction of movement R _S perpendicular to the hose direction D1. The first translation drive 10, the guide 25, the pivot drive 15 and the rotary drive 13 for the at least a surface processing element 3 ₁ , 3 ₂ ,..., 3 _N are attached to a pivotable plate 8. An adjustment drive 17 is assigned to the at least one surface processing element 3 ₁ , 3 ₂ , ..., 3 _N , so that the at least one surface processing element 3 ₁ , 3 ₂ , ..., 3 _{N can be moved} perpendicular to the surface 100 of the at least one workpiece 1 is. By moving the at least one surface treatment element 3 ₁ , 3 ₂ , ..., 3 _N , an almost even contact pressure can be applied to the at least one workpiece regardless of the wear and tear of the at least one surface treatment element 3 ₁ , 3 ₂ , ..., 3 _N 1 can be ensured.

Figure 4 FIG. 13 shows a perspective view of the device 1000 from FIG Fig. 3 , wherein the at least one surface processing element 3 _{1 has} a changed and non-zero setting angle 301 with respect to the direction of passage D1. For this purpose, the swivel drive 15 was activated and the swiveling flap 8 swiveled so that the axis of rotation R1 of the at least one surface treatment element 3 _{1 is} inclined by an angle of attack 301 with respect to a perpendicular S to the direction of passage D1. The first translation drive 10 consequently moves the at least one surface _{processing element 3 1} in an oscillating manner in a direction of movement RS which is inclined at the angle of attack 301 with respect to the perpendicular S to the direction of passage D1.

A possible embodiment of the processing machine 2 of the device 1000 for surface processing of a surface 100 of a rock and / or workpieces 1 made of concrete (eg floor slabs) is shown in FIG Figure 5 shown. Here the guide 25 is firmly connected to the stationary holder 7. A wheel 16 is provided above the guide 25 and is mechanically coupled to the at least one roller-shaped surface processing element 3 _1. The wheel 16 interacts with a swivel drive 15. At the in Fig. 5 The swivel drive 15 is not activated and thus the axis of rotation R1 of the at least one surface treatment element 3 _{1 is} perpendicular to the direction of passage D1. Activation of the first translation drive 10 consequently moves the at least one surface _{processing element 3 1 in an} oscillating manner in the direction of movement R _S , which is perpendicular to the direction of passage D1. The other features of the in Fig. 5 The embodiment shown are for the sake of simplicity not described again here, as this is already sufficient in the description Figure 3 were dealt with.

Figure 6 FIG. 11 shows a perspective view of the device 1000 or the processing machine 2 from FIG Fig. 5 , wherein the at least one surface processing element 3 _{1 has} a changed and non-zero setting angle 301 in relation to the direction of passage D1. The swivel drive 15 rotates the wheel 16 into a predefined angular position. The pivoting of the wheel 16 leads to a pivoting of the axis of rotation R1 of the at least one surface treatment element 3 ₁ (roller-shaped), whereby an angle of incidence 301 of the axis of rotation R1 of the at least one surface treatment element 3 ₁ with respect to the perpendicular S is defined. _{The at least one surface processing element 3 1 set} in rotation with the rotary drive 13 and oriented at the angle of incidence 301 is moved with the first translation drive 10 in an oscillating manner along the perpendicular S (perpendicular to the direction of passage D1). According to one possible embodiment, the angle of attack 301 can be changed according to a predefined pattern during the oscillating movement of the at least one surface _{processing element 3 1.}

Figure 7 shows a schematic top view of an embodiment of the arrangement of the at least one surface treatment _{element 3 1} in the form of a roller-shaped element. The axis of rotation R1 of the roller-shaped element is _{aligned parallel to the direction of movement R S of} the holder 7. The surface treatment element 3 ₁ is rotatably mounted in a holder 7 provided for this purpose. By means of the holder 7, the surface _{machining element 3 1 can be moved} in an oscillating manner in a direction of movement Rp and parallel to the direction of passage D1 and / or in an _{oscillating manner in a direction of movement R S} and perpendicular to the direction of passage D1. The second translation drive 9 is provided for the corresponding movement of the holder 7 in the direction of movement Rp. The movement of the holder 7 in the direction of movement R _s is controlled by the first translation drive 10 (see FIG Fig. 6 ) causes. In the illustration shown here, two workpieces 1 are arranged next to one another in the transport plane 11 of the transport unit 5, their surface 100 can be processed at least partially at the same time as the surface processing _{element 3 1.} However, the arrangement and number of workpieces 1 should not be interpreted as a limitation of the invention. The oscillating movement of the holder 7 for the surface _{processing element 3 1} in the direction of movement Rp parallel to the direction of passage D1 and / or in the direction of movement R _S perpendicular to the direction of passage D1 enables complete processing and efficient processing of the surface 100 of the workpieces 1.

Figure 8 FIG. 11 shows a schematic top view of the arrangement or positioning of the at least one surface treatment element 3 ₁ from FIG Fig. 3 in the holder 7 provided for this purpose. The axis of rotation R1 of the surface treatment element 3 ₁ is inclined by the setting angle 301 with respect to that in the direction of movement R _S , which is perpendicular to the direction of passage D1. The axis of rotation R1 is parallel to the transport plane 11 of the transport unit 5. The angle of attack 301 can be adjusted as required by means of the holder 7.

Figure 9 shows a schematic plan view of a further embodiment of the arrangement of two surface machining elements 3 ₁ and 3 ₂ in the form of roller-shaped elements in the holder provided 7. The two surface machining elements 3 ₁ and 3 ₂ are each the same amount of the tilt angle 301 with respect to the in Direction of movement R _S , which is perpendicular to the direction of passage D1, inclined. The angle of incidence 301 can be adjusted via the holder 7.

Figure 10 FIG. 11 shows a schematic top view of a further embodiment of the arrangement of the two surface treatment elements 3 ₁ and 3 ₂ from FIG Fig. 5 in the holder 7 provided for this purpose. The first surface treatment element 3 ₁ is inclined by an angle of incidence 301 in the counterclockwise direction and the second surface treatment element 3 ₂ is inclined by an inclination angle 301 in the clockwise direction. According to the amount, the angles of attack 301 are different.

It goes without saying for a person skilled in the art that the Figures 7 to 10 shown angle 301 of the axes of rotation R1 of the two surface _{processing elements 3 1} and 3 ₂ (roller-shaped elements) none Represent limitation of the invention. The angle of incidence 301 of the two surface treatment elements 3 ₁ and 3 ₂ can be adjusted in terms of amount and size in the holder 7 as required.

Figure 11 shows a schematic top view of the arrangement of the at least one surface treatment element 3 ₁ , 3 ₂ ,..., 3 _N. In the embodiment shown here, two surface treatment elements 3 ₁ and 3 _{2 are arranged} in the holder 7. The two surface _{processing elements 3 1} and 3 ₂ are each designed in the form of a cup grinding element and can each rotate about an axis of rotation R2. The two surface processing elements 3 ₁ and 3 ₂ are attached in the holder 7 in such a way that the axis of rotation R2 is oriented perpendicular to the transport plane 11. As already described above, by means of the holder 7 (if movable) and / or by means of the guide 25 (see FIG Figures 3 to 6 ) the surface treatment elements _{3 1} and 3 _{2 are moved in an} oscillating manner in the direction of movement R _P and the direction of movement R _S.

Figure 12 shows a schematic top view of an additional embodiment of the arrangement of a first surface treatment element 3 ₁ and a second surface treatment _{element 3 2} . The first surface _{machining element 3 1} is designed as a grinding cup _{element and the second surface machining element 3 2} is designed as a roller-shaped element. The surface _{processing element 3 1} rotates around the axis of rotation R2 (perpendicular to the transport plane 11) and the second surface _{processing element 3 2} rotates around the axis of rotation R1 (parallel to the transport plane 11).

Figure 13 shows a schematic top view of an additional embodiment of the invention, in which the holder 7 is guided in a guide 20. Within the guide 20, the holder 7 with the two surface _{processing elements 3 1} and 3 ₂ (with any setting angles) can be moved in an oscillating direction Rp and parallel to the direction of passage D1 and / or in a direction R _S and oscillating and perpendicular to the direction of passage D1.

Figure 14 shows in plan view the device 1000 according to the invention for surface treatment of a stone and / or concrete surface. The device 1000 is assigned a control unit 40, which at least with the drive 6 for the Transport unit 5, the adjustment drive 17 for the surface treatment _{elements 3 1} , 3 ₂ , ..., 3 _N , the second translation drive 9 (if present) and the first translation drive 10 for the holder 7 is communicatively connected. Communicative connections to the rotary drive 13 and swivel drive 15 (see e.g. Figures 3 to 6 ) provided, which are not shown for reasons of clarity. Furthermore, here only by way of example, a sensor 31 is shown which is assigned to the transport unit 5 and provides feedback to the control unit 40 with regard to the speed of the transport unit 5. Another sensor 32 is assigned to the holder 7, which monitors the oscillatory movement of the holder 7 (if not stationary) in the direction of movement R _P , parallel to the direction of passage D1, and in the direction of movement R _S perpendicular to the direction of passage D1, and reports it to the control unit 40 . Another sensor 33 is used to control the set angle of attack 301 of the at least one surface treatment element 3 ₁ , 3 ₂ ,..., 3 _N. In addition, a sensor 34 can be provided on the holder 7, which _{monitors and controls the pressing force of the at least one surface processing element 3 1} , 3 ₂ , ..., 3 _N on the surface 100 of the workpiece 1 to be processed, which is set by the adjustment drive. It goes without saying for a person skilled in the art that the above list of sensors 31 to 34 is not exhaustive. Depending on requirements, sensors can be assigned to the elements of the device 1000 in order to be able to ensure efficient monitoring and control.

It goes without saying for a person skilled in the art that the angular position of the roller-shaped surface processing element 3 ₁ , 3 ₂ ,..., 3 _{N can} also be set manually. The same applies to the adjusting drive 17.

It is believed that the present disclosure and many of the advantages noted therein will be understood from the preceding description. Obviously, various changes in the shape, construction and arrangement of the components can be made without departing from the disclosed subject matter. The form described is illustrative only and it is the intent of the appended claims to embrace and incorporate such changes. Accordingly, the scope of the invention should be limited only by the appended claims.

List of reference symbols

1

workpiece

2

Processing machine

31, 32, ..., 3N

Surface finishing element

4th

Rotary brush, rotary element

5

Transport unit

6th

Drive for transport unit

7th

bracket

8th

swiveling plate

9

second translational drive

10

first translational drive

11th

Transport level

13th

Rotary drive

15th

Slewing drive

16

wheel

17th

Adjustment drive

20th

guide

25th

guide

31

sensor

32

sensor

33

sensor

34

sensor

40

Control unit

100

surface

301

Angle of incidence Surface processing element in the form of a cylinder

1000

contraption

D1

Flow direction

R1

Axis of rotation

R2

Axis of rotation

RP

Direction of movement

RS

Direction of movement

S.

vertical

V1

Feed rate

Claims (15)

Device (1000) for surface treatment of a stone and / or concrete surface, comprising - At least one transport unit (5) which moves at least one workpiece (1) to be processed along a passage direction (D1), - At least one processing machine (2) which has at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) which is movable relative to a surface (100) of the workpiece (1) to be processed, the at least one Surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) rotates around an axis of rotation (R1 or R2) at least during direct mechanical contact with the surface (100) to be processed and in grinding contact with the surface (100 ) is, characterized in that • a holder (7) for the at least one surface treatment element (3 ₁ , 3 ₂ , ..., 3 _N ) is provided, with the at least one surface treatment element (3 ₁ , 3 ₂ , ..., on the holder (7)) 3 _N ) is rotatably mounted about the axis of rotation (R1, R2); and • At least one first translation drive (10), which is provided on the holder, the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) oscillating in a direction of movement (R _S ) and transversely to the direction of passage (D1) within a transport plane (11) of the transport unit (5). Device according to claim 1, wherein a second translation drive (9) is assigned to the holder (7) in order to move the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) in an oscillating manner and parallel to the direction of passage (D1). Device according to claim 1, wherein a guide (25) is provided on the holder (7), along which the at least one surface treatment element (3 ₁ , 3 ₂ , ..., 3 _N ) is moved in a direction of movement with the first translation drive (10) (R _S ) can be moved in an oscillating manner and transversely to the direction of passage (D1). Apparatus according to claim 3, wherein a pivotable plate (8) carries the guide (25) and a pivot drive (15) sets and _{an angle of attack (301) of the at least one roller-shaped surface processing element (3 1} , 3 ₂ , ..., 3 _N) the first translation drive (10), which _{moves at least one surface processing element (3 1} , 3 ₂ , ..., 3 _N ) oscillating in the direction of movement (R _S ) at the angle of attack (301) and transversely to the direction of passage (D1). Apparatus according to claim 3, wherein a wheel (16) is provided above the guide (25) which is firmly connected to the holder (7), the wheel (16) cooperating with a swivel drive (15), whereby an angle of attack ( 301) of the at least one roller-shaped surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) is adjustable and the first translation drive (10) the at least one surface processing element (3 ₁ , 3 ₂ , .. ., 3 _N ) moves in an oscillating manner in the direction of movement (R _S ) perpendicular to the direction of travel (D1). Device (1000) according to one of the preceding claims, wherein an adjusting drive (17) is assigned to the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ), so that the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) can be moved perpendicular to the surface (100) of the at least one workpiece (1) so that an almost uniform contact pressure, regardless of the wear and tear of the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ), prevails on the workpiece (1). Device according to one of the preceding claims, wherein a rotary drive (13) is provided for the at least one surface treatment element (3 ₁ , 3 ₂ , ..., 3 _N ) and wherein the rotary drive (13) is of this type is designed so that the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) can be driven in rotation. Device (1000) according to one of the preceding claims, wherein the at least one surface _{processing element (3 1} , 3 ₂ , ..., 3 _N ) is a roller-shaped element which is rotatable about the axis of rotation (R1) parallel to the transport plane (11) and / or the at least one surface _{processing element (3 1} , 3 ₂ , ..., 3 _N ) is a cup grinding element which can be rotated with the axis of rotation (R2) perpendicular to the transport plane (11) Device (1000) according to claim 1, wherein at least two surface treatment elements (3 ₁ , 3 ₂ , ..., 3 _N ) are provided, which are arranged at least in pairs with respect to one another. Device (1000) according to claim 9, wherein the surface _{processing elements (3 1} , 3 ₂ ) of a pair, which are designed as roller-shaped elements, are each set in mirror symmetry relative to one another and perpendicular to the direction of passage (D1) with the setting angle (301). Device (1000) according to one of the preceding claims, wherein a control unit (40) at least with, a first adjustment _{drive (17) for the surface processing elements (3 1} , 3 ₂ , ..., 3 _N ) and a drive (6) of the transport unit (5) is communicatively connected and wherein at least one sensor (31) is assigned to the transport unit (5), which gives feedback to the control unit (40) regarding the speed of the transport unit (5), and at least one further sensor (32) of the holder (7) is assigned to which at least the oscillatory movement in the direction of movement (R _S ) of the at least one surface _{processing element (3 1} , 3 ₂ , ..., 3 _N ) transversely or perpendicular to the direction of passage (D1) within a transport plane (11) supervised. Process for the surface treatment of a stone and / or concrete surface,
characterized by the following steps: a) Providing the workpieces (1) to be processed on a transport plane (11) of a transport unit (5) in such a way that the surface (100) of the workpieces (1) to be processed faces away from the transport plane (11); b) providing a processing machine (2) which has at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) which is moved relative to the surface (100) of the workpieces (1) to be processed; _{c) Bringing a surface treatment element (3 1} , 3 ₂ , ..., 3 _N ) held in contact with at least one holder (7), the at least one surface treatment _{element (3 1} , 3 ₂ , ..., 3 _N ) about the axis of rotation (R1 or R2) is rotatably mounted, the at least one surface _{processing element (3 1} , 3 ₂ , ..., 3 _N ) rotating about the axis of rotation (R1 or R2) during direct mechanical contact with the surface to be processed (100) and is in abrasive contact with the surface to be machined (100); d) Moving the at least one surface treatment element (3 ₁ , 3 ₂ , ..., 3 _N ) with a first translation drive (10) in a direction of movement (R _S ), oscillating and perpendicular or with an angle of attack (301) to the direction of passage (D1) within a transport level (11) of the processing machine (2). The method according to claim 12, wherein a second translation drive (9) for the holder (7) is designed such that the holder (7) in the direction of movement (R _P ) parallel to the passage direction (D1) independently of the first translation drive (10) for the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) is moved. Method according to one of claims 12 to 13, wherein the at least one surface _{processing element (3 1} , 3 ₂ , ..., 3 _N ) is a roller-shaped element which is rotated about the axis of rotation (R1) parallel to the transport plane (11) and / or the at least one surface processing element (3 ₁ , 3 ₂ , ..., 3 _N ) is a cup grinding element which is rotated with the axis of rotation (R2) perpendicular to the transport plane (11). Method according to claim 12, wherein a feed speed (V1) of the workpiece (1) in the direction of passage (D1) is at least 0.5 m / min and at most 10 m / min, preferably at least 2 m / min and at most 6 m / min.

Images