EP2738310B1 - Method and device for creating markings from highly viscous marking material on a surface to be marked - Google Patents

Description

The invention relates to a method for producing markings, in particular marking lines, of highly viscous marking material, in particular two-component cold plastic, on a surface to be marked, in particular road surface, wherein the marking material applied from a stock of material and before hitting the surface to be marked in a The rotational axis of the body of revolution is transverse to the longitudinal direction of the mark, wherein the marking material in the form of several seen in the longitudinal direction of the rotational body side by side deployed Marking material streams is supplied to the rotary body and wherein the marking material under pressure from a plurality of discharge nozzles continuous or pulsating or intermittie is applied.

Moreover, the invention relates to a device for producing markings, in particular marking lines, of highly viscous marking material, in particular two-component cold plastic, on a surface to be marked, in particular road surface, with at least one material reservoir, with at least one conveyor for conveying marking material from the material reservoir to one Materialauslass and with a disposed below the material outlet rotation body through which aussprießendes from the material outlet marking material in non-uniform material portions is divisible and applied to the surface, wherein the device is movable in operation in the longitudinal direction of the mark to be generated relative to the surface and wherein the axis of rotation of the Rotational body transverse to the longitudinal direction of the mark wherein the marking material in the form of several juxtaposed in the longitudinal direction of the rotating body marking material streams is fed to the rotary body, wherein the material outlet is formed by a plurality of juxtaposed in the longitudinal direction of the rotation body juxtaposed outlet openings and wherein the outlet openings are discharge nozzles, through which the marking material under pressure steadily or pulsating or intermittent ausbringbar.

Structured markings of non-uniform material portions, that is to say with a stochastic material distribution, have increased traffic safety, in particular in the dark and wet, since rainwater can run off and individual regions of the marking protrude from the water film on the road surface. The light of the car headlights is reflected better. Also favorable is a lower noise when driving over such markings in comparison to markings of uniform, regularly arranged drops of material. Also, in markers with stochastic material distribution, the risk of loosening the marking material when driving over by a snowplow is low.

A method and a device of the type mentioned are from the document EP 0 665 062 A1 known. This document shows a device on a vehicle for road marking by means of drops of paint. The device has a storage container for paint mass, which has an outlet gap at the bottom, followed by a running obliquely to the bottom surface of the reservoir baffle, on which a laminar flow of the ink composition takes place. At its lower edge, the baffle is provided with cuts, which ensure that more color mass partial flows arise when the vehicle moves in the working direction. Below the bottom of the reservoir is a turbine roller with blades for generating an air flow, which acts on the running off of the baffle paint mass partial streams. This air stream splits the paint mass into drops of paint and accelerates the paint drops, which are thrown onto the road surface with great force.

A disadvantage is considered in this prior art that the volume flow of the ink composition from the open reservoir through the outlet depends heavily on the level of the color mass in the open reservoir and with this Level fluctuates. Also, the viscosity of the material, which also varies as a result of changes in temperature, has an influence on the amount of paint applied. As a result, the amount of paint compound applied per vehicle traveled distance unit is not constant. This leads to uneven road markings, which means a reduced quality. In addition, the achievable marking speed is limited because the colorant is released by gravity alone from the reservoir. This prior art also has the disadvantage that in relatively short intervals, depending on the curing time of the marking material, the marking process must be interrupted in order to clean the device parts touched by the marking material, in particular the reservoir and the baffle. This means lower daily output and a high consumption of detergent, which leads to high costs and environmental pollution. In the slit-shaped material outlet, it is also easy to obstruct the flow of material, for example due to the sticking of a clump in the slot, which makes a relatively frequent cleaning of the outlet required.

Another method and apparatus for the purpose mentioned above are from the document CH 681 904 A5 known. The device here forms an open system with a drawing box with a slit-shaped material outlet and with a rotational body arranged underneath, here in the form of a roll of a material of low adhesion. When the marking is made, the marking material flowing out in the form of a thin curtain is divided into a multiplicity of unequally sized and irregularly shaped material portions before striking the surface to be marked by means of the rotating body of revolution. In this way, structured markings can be produced with stochastic material distribution.

This prior art, in addition to the aforementioned drawbacks, has the further disadvantage that the marking material discharged here in the form of a flat strip or curtain has the property that the material flow after leaving the slot-shaped outlet due to acceleration by gravity and by wall friction on the Stem outlet walls before he hits the body of revolution. The effect of necking depends, among other things, on the viscosity of the material, which also varies as a result of changes in temperature, and on the type and number of fillers and solids added to the marking material. As a result, the line width of the marking line is therefore always smaller than the slot width of the outlet by an amount that can not be determined in advance.

Another device is from the document EP 0 148 494 A2 known. Here drops of marking material from substantially horizontally oriented, to a plurality of juxtaposed, separated by partitions gap-shaped outlets are discharged and thrown by means of a rotating paddle on the surface to be marked. The axis of rotation of the paddle arrangement is in the same height as the outlets. Hereby, marking lines can be generated from individual material drops that are largely identical to one another.

A disadvantage is considered in this prior art that it can be relatively easily obstruct the movement of the rotating paddle by adhering to the partitions and there curing marking material. Cleaning the relatively narrow outlets is difficult and time consuming. Structured markings with stochastic material distribution can not be produced with this device.

From the document DE 10 2009 045 576 A1 For example, a device is known for generating marking lines consisting of many individual marking material portions. Here, the marking material portions are expelled from a nozzle arrangement connected to a marking material source with a plurality of discharge nozzles arranged next to one another transversely to a direction of movement of the apparatus with the aid of compressed air blasts. Hereby, marking lines can be produced from individual material droplets which are largely identical to one another, but structured markings with stochastic material distribution can not be produced herewith.

The documents EP 0 422 346 A1 and EP 0 665 062 A1 Show devices for generating marking lines of non-uniformly applied to the surface to be marked marking material portions. In this case, these devices are open systems in which the marking material flows out of a reservoir alone by gravity each from a slit-shaped, wide outlet and on a rotary body, such as spiked roller falls, which divides the marking material into the non-uniform material portions and on the applies to surface to be marked. In the documents EP 0 422 346 A1 and EP 0 665 062 A1 Thus, in each case an open system for irregular structural markings of marking material in the form of two-component cold plastic is described. As already mentioned above, these systems have a number of disadvantages, in particular more frequent and longer work interruptions for cleaning, a high consumption of environmentally harmful solvents and lower daily outputs. In this case, a separate inlet box or closure must be held and installed for each marker line width, which leads to high expenditure of time for the conversion and higher costs for the many different closures. Furthermore, flat slot material openings like those in the documents have EP 0 422 346 A1 and EP 0 665 062 A1 have a further disadvantage, because in open systems with flat slot material openings in which a curtain-like falling material flow is supplied to the rotary body in stroke width, there are frequent blockages in the material opening.

Devices on documents DE 10 2009 045 576 A1 and EP 0 148 494 A2 generate marking lines from individual, regularly spaced marking material dots or piles, but no marking lines of non-uniformly applied marking material portions to the surface to be marked.

For the present invention, therefore, the task is to provide a method and an apparatus of the type mentioned, which avoid the disadvantages mentioned and allow the production of structured markers with stochastic material distribution in high quality and with high efficiency.

According to the invention, the solution of the part of the object relating to the method succeeds with a method of the type mentioned at the outset, which is characterized in that the individual marking material streams are switched on or off in accordance with the marking to be produced and that a first contiguous group of the marking material streams is directed to a first rotary body is guided and / or that a second contiguous group of Markiermaterialströme is guided to a second, independently rotatable from the first body rotation body rotation.

Advantageously, the plurality of marking material streams are less susceptible to clumping or foreign matter interference in the marking material than a single thin ribbon or curtain marking material stream, which less frequently causes disruption and disruption. Due to the multiple juxtaposed marking material streams, moreover, the influence of the material viscosity on the line width of the marking line is significantly lower than in the case of a band-shaped or curtain-shaped material flow. The method according to the invention can advantageously be carried out in a closed system without the known, above-mentioned disadvantages of open systems with drawing or feed boxes, which avoids hardening of marking material before its application to the surface to be marked. The fact that the marking material is applied under pressure from several discharge nozzles steadily or pulsating or intermittent, is contributed to a safe process. In addition, such a high speed can be achieved when producing the markings. Because the individual marking material streams are switched on or off in accordance with the marking to be produced, the width of a marking to be produced can be changed in a simple manner, in particular in a simple manner. In this way, not only individual lines, but also double lines and combined lines can be advantageously produced in one operation with the inventive method. Here, a high operating speed and an exact and constant distance of the individual marking lines of the double lines or combined lines are achieved, which is not achievable in successive production of the lines in practice. Since the individual discharge nozzles can be switched on and off independently of one another, the parallel lines can be generated independently of each other; Thus, for example, a continuous first line can be generated in one operation, to which a second, interrupted line is generated in parallel.

The number of discharged marking material flows depends in particular on the width of the mark to be generated and this can be varied accordingly. The distance between two adjacent marking material flows relative to one another is expediently chosen such that no influence of the individual material flows can be recognized in the marking produced, ie a uniform material distribution is achieved in the transverse direction of the marking.

Preferably, it is further provided for the method according to the invention that the marking material streams having a round or oval or square or rectangular material cross section are fed to the rotational bodies. With these cross-sections, a low sensitivity to any clumps or foreign bodies possibly contained in the marking material is achieved compared to a single very wide and thin material cross-section according to the aforementioned prior art, which promotes trouble-free operation.

According to the invention, the solution of the second part of the object relating to the device succeeds with a device of the type mentioned above, which is characterized in that the individual outlet openings can be opened or shut off in accordance with the marking to be generated and that a first connected group of the outlet openings Rotary body is arranged and that under a second contiguous group of outlet openings, a second, from the first rotating body independently rotatable rotary body is arranged.

With the device according to the invention, the advantages already explained above in connection with the method according to the invention are achieved in terms of low susceptibility to interference, economical operation and high quality of the markings produced. In particular, a high operating speed is ensured because the outlet openings are discharge nozzles, through which the marking material can be applied continuously or pulsating or intermittently under pressure. Since the individual outlet openings can be opened or shut off in accordance with the mark to be produced, the width of the marking produced can, if necessary, be changed quickly and simply. Thus, not only individual lines but also double lines and / or combined lines can be produced particularly economically with the device according to the invention. When producing combined lines, the corresponding rotational body can be stopped in each case in line gaps, so that a spin-off of the marking material residues still remaining on the rotational body in the line gap is largely avoided. In the case of double lines and combined lines, a precisely defined distance between the two adjacent marking lines is always ensured due to their simultaneous production.

For a low sensitivity to clumping and / or solid in the marking material, the outlet openings preferably have a round or oval or square or rectangular cross-section.

In a further embodiment, each rotation body is preferably assigned its own individually controllable rotary drive, preferably one hydraulic motor each. This can optionally be set both rotation body or only one of the two rotating body in rotation, depending on the particular need. In addition, due to the controllability, the rotational speed of the rotary bodies can be changed and adjusted appropriately to achieve a desired structure of the marker. In addition, if necessary, each rotation body can be shut down individually.

Suitably, each rotational body is provided on its outer circumference with structural elements, preferably formed by a spiked roller.

In order to be able to influence the effect which each rotational body exerts on the marking material flows impinging on it, it is advantageously provided that each rotational body is adjustable in position relative to the material outlet, preferably in a horizontal direction parallel to the direction of movement of the device and / or in a vertical direction is slidable or pivotable in a vertical plane.

To be able to quickly and easily adapt the device to different needs, in particular different marking widths, it is provided that the individual discharge nozzles are located in nozzle elements which can be attached individually to a nozzle carrier and which can be removed from the nozzle carrier and form a variable nozzle arrangement. Even blockages caused by hardened material can be eliminated much easier by removing or replacing individual nozzle elements than with a single slit-shaped material outlet.

The above-mentioned releasing and shutting off the individual outlet openings takes place, for example, by displacing or rotating the individual nozzle elements within the nozzle arrangement, whereby two marking material channel sections of a marking material channel leading to the relevant nozzle element can be brought into and out of alignment. This arrangement also allows for easy rinsing of the nozzle members with one through the marking material channel supplied detergent with low detergent consumption, since if necessary, the individual nozzle elements are each acted upon by the detergent and with maximum detergent pressure.

Another technical possibility for adapting the device to different applications is that preferably the individual nozzle elements with variable lateral distance from one another to the nozzle assembly can be assembled.

The conveying device of the device is preferably formed by at least one metering pump. The device expediently forms a closed system in which, in combination with the metering pump, the amount of marking material applied is path-dependent controllable in order to ensure a constant layer thickness of the marking produced with changes in the speed of the device relative to the surface to be marked. Furthermore, in the closed system in combination with the metering pump, an exact duplication of the amount of material delivered in the case of double lines or combined lines is possible by correspondingly doubling the delivery rate of the metering pump.

In addition to the metering pump or instead of the metering pump, a pressure medium source can be used as the conveying device, which generates a pressure pad from a pressure medium, such as air, in a closed material reservoir above the material level in order to convey the marking material. In the case of two-component marking material, for example, its basic component with the larger volume flow can be conveyed by means of a pressure medium and its second component, in particular hardener, with the smaller volume flow by means of a metering pump.

An advantageous embodiment of the device according to the invention finally provides that the rotational body including a rotational body bearing and the rotary actuators are designed as attachable to the rest of the device and separable from the rest of the device Zurüsteinheit. The device can be retrofitted quickly and easily between two different versions in this embodiment, wherein in the first version without the rotation body markings can be generated, which are relatively similar among a variety of each other Marking material points exist, while in the second version with the rotating bodies markings with stochastic material distribution can be generated. In this case, the change between the two versions of the device with little conversion effort is feasible. Also advantageous are the relatively low cost and the small amount of time required for the conversion, if in an existing device for generating markings from uniform marking material points only the attachment unit still needs to be purchased in order to then produce marks with stochastic material distribution can. For example, the above-mentioned first version of the device according to the DE 10 2009 045 576 A1 of the Applicant, to which reference is hereby made.

Figur 1

eine Vorrichtung zum Erzeugen von Markierungen auf einer zu markierenden Oberfläche, in einer schematischen Seitenansicht,

Figur 2

das in Figur 1 eingekreiste Detail II der Vorrichtung in vergrößerter perspektivischer Ansicht,

Figur 3a

den Vorrichtungsteil aus Figur 2 in einem schematischen Querschnitt, mit einer ersten Arbeitsrichtung,

Figur 3b

den Vorrichtungsteil aus Figur 2 in einem schematischen Querschnitt, mit einer zweiten Arbeitsrichtung,

Figur 4

den Vorrichtungsteil aus Figur 2 in einer Rückansicht und

Figur 5

den Vorrichtungsteil aus Figur 2 in einer Draufsicht.

In the following, embodiments of the invention will be explained with reference to a drawing. The figures of the drawing show:

FIG. 1

a device for producing markings on a surface to be marked, in a schematic side view,

FIG. 2

this in FIG. 1 circled detail II of the device in an enlarged perspective view,

FIG. 3a

the device part FIG. 2 in a schematic cross section, with a first working direction,

FIG. 3b

the device part FIG. 2 in a schematic cross section, with a second working direction,

FIG. 4

the device part FIG. 2 in a rear view and

FIG. 5

the device part FIG. 2 in a top view.

The FIG. 1 The drawing shows a device 1 for generating markings on a surface 5 to be marked, in a schematic side view. The device 1 is here as a self-propelled vehicle with a frame 10 and four wheels 11 and a rear-mounted drive unit 16, such as internal combustion engine and transmission, and with a driver's cab 15 for an operator executed. The device 1 may alternatively be designed as a towed vehicle without its own drive.

In the front, in FIG. 1 right part of the device 1 is arranged on the frame 10 at least one reservoir 12 for marking material. The reservoir 12 is followed by a conveyor 13, here a metering pump, the input side is connected to the interior of the reservoir 12 via lines not visible here in connection and the output side with a material outlet 2 for applying marking material on the surface to be marked 5, such as road surface, connected is. The material outlet 2 is attached to the underside of the frame 10 and is located at a predeterminable distance above the surface 5. In the transverse direction of the device 1, that is perpendicular to the plane of the drawing FIG. 1 Seen, the material outlet 2 consists of a number of juxtaposed separate outlet openings, which are not individually visible here.

Below the material outlet 2, two rotatable bodies 3.1, 3.2, which are rotatable, are arranged, which are provided with structural elements on their outer circumference.

During operation of the device 1, it moves in the direction of travel 14 shown by the arrow over the surface 5 to be marked. The conveying device 13 conveys marking material from the reservoir 12 in a predeterminable dosage to the material outlet 20 and its individual outlet openings, through which the marking material in the form of several parallel streams of material initially falls freely down and then after a short distance on the rotational body 3.1, 3.2 struck in rotation. By means of the structural elements attached thereto, the material streams of the marking material impinging on the rotary bodies 3.1, 3.2 are divided into uneven and irregular material portions and conveyed onto the surface 5 to be marked.

From a arranged in the rear of the device 1 further reservoir 17 glass beads can be removed and sprinkled onto the not yet cured surface of the mark, as is well known.

The FIG. 2 The drawing shows in a perspective view of part II of the device 1 FIG. 1 with the material outlet 2 and the rotational bodies 3.1, 3.2 in an enlarged view. In the upper part of the FIG. 2 is the material outlet 2 visible, which is composed of a plurality of juxtaposed, a nozzle assembly 27 forming nozzle elements 25, which are each held on a nozzle carrier 26. The nozzle carriers 26 are in turn suitably mechanically connected to a part of the frame 10 of the device 1.

Each nozzle element 25 has a downward-pointing discharge nozzle, through which a respective material stream of marking material can be dispensed.

At an adjustable distance below the material outlet 2, the rotary bodies 3.1, 3.2 with their structural elements 30, here in the form of a spiked roller by means of two lateral, extending in the vertical direction brackets 34 on the remaining part of the device 1, here the frame 10, mounted. At its two ends, the rotary bodies 3.1, 3.2 are rotatably mounted in bearings 31. At the left end side of the left rotation body 3.1 is a rotary drive 32.1 and to the right end of the right-hand rotation body 3.2 is a rotary drive 32.2, here in each case a hydraulic motor, grown by means of which the rotary body 3.1, 3.2 are set in rotation.

For supplying the marking material is at least one, not visible here material supply, which is connected via a manifold with all nozzle elements 25 in flow communication. Each discharge nozzle in the various nozzle elements 25 can be individually opened or closed, so that a desired number of streams of material of the marking material can be discharged. Thus, the width of the generated mark, such as a marker line, can be easily adjusted.

It is characteristic of the device 1 that it has two rotary bodies 3.1 and 3.2, which are arranged next to one another and are rotatable about the same axis of rotation, but independently of each other. The two rotary bodies 3.1 and 3.2 are rotatably mounted at their respective inner front end in a bearing 31 from each other rotatably.

With the device 1, double lines or combined lines can be produced with high quality and high productivity. For example, to generate a double line from two groups of nozzle elements 25, two groups of streams of material are applied, one group being associated with the first rotating body 3.1 and the second group laterally spaced from the first group with the second rotating body 3.2, for two parallel, continuous marking lines produce. If a combined marker line, i. a continuous line with a parallel broken line is to be generated, marking material is continuously discharged from the first group of nozzle elements 25, while from the second group of nozzle elements 25 associated with the second rotary body 3.2, only periodically marking material is applied, so that In this way, a combination of a solid line and a parallel running broken line is generated. In the line gaps, the respective rotating body 3.1 or 3.2 is stopped to prevent the remaining material of the marking material from being thrown off. In addition, by means of an air pulse from an air blower on a possibly provided, the rotary body 3.1, 3.2 partially enveloping, not shown in the drawing splash adhesive material residue are blown back onto the currently applied marking line.

As in FIG. 2 illustrated further, the part of the device 1, which includes the rotary body 3.1, 3.2 and their bearings 31 and rotary actuators 32.1, 32.2, are designed as quickly attachable and degradable equipment unit 1 ', so that the device 1 can be quickly converted for different purposes. Without the rotary bodies 3.1, 3.2, the device 1 generates markings from a multiplicity of mutually identical, regularly arranged marking material points; With the rotating bodies 3.1, 3.2, the device 1 produces markings of non-uniform material portions with stochastic material distribution.

FIG. 3a the drawing shows the in FIG. 2 shown part of the device 1 in a vertical section. Top in FIG. 3a the nozzle assembly 27 is shown, which is composed of the nozzle elements 25 arranged one behind the other perpendicular to the plane of the drawing. Each nozzle element 25 is associated with a nozzle carrier 26 and a holder 28 with a retaining spring.

Through a Materialzuführkanal 21 and an upstream line, not shown here is the in FIG. 3a Cut marking element 25 can be fed to the marking element, wherein the marking material is first conveyed into a discharge nozzle 23, which has an outlet opening 20 towards the bottom. At the upper end of the discharge nozzle 23, an air supply duct 22 is connected, which is supplied with compressed air via an air line, not shown here. The compressed air can be supplied continuously or in a pulsating or intermittent manner, as a result of which a continuous or pulsating or intermittent marking material flow is discharged through the outlet opening 20. This dispensing process takes place during operation of the device 1 in all or selected nozzle elements 25, which in their arrangement perpendicular to the plane of the drawing FIG. 3a form the nozzle assembly 27.

Below the nozzle elements 25 of a rotational body 3.1 is visible with its spine-shaped structural elements 30 and by means of in FIG. 2 shown and mentioned rotary drive in working direction according to the rotary arrow 33 drivable. As a result of the rotation of the rotary body 3.1, its structural elements 30 divide the material flow 24 of the marking material emerging from each outlet opening 20 into uneven, differently sized material portions 24 ', which then reach the surface 5 and form the marking 4 with a stochastic material distribution. Here, the device 1 moves in the direction indicated by an arrow direction of movement 14 over the surface 5, in FIG. 3a left to right
According to the FIG. 3b In the drawing, the device 1 can also be compared to the example in FIG FIG. 3a have reverse working direction. This can according to FIG. 3b the in FIG. 2 shown part of the device 1 inversely as in FIG. 3a be mounted on the frame 10 of the device 1. The device 1 in FIG. 3b corresponds in its parts completely the device 1 in FIG. 3a but is now in operation in the opposite direction according to the movement arrow 14 in FIG. 3b moved, from right to left. The device 1 can also generate a first mark in a first run in one direction and then generate a further mark in a second run with the direction of movement reversed without having to turn. With regard to the further reference numerals in Figure 3b is on the description of FIG. 3a directed.

By changing the rotational speed of the rotary bodies 3.1, 3.2 and by changing the position of the rotary bodies 3.1, 3.2 relative to the material outlet 2, the effect of the rotary bodies 3.1, 3.2 can be changed and adjusted as needed to the marking material streams 24. If a division of the material streams 24 by the rotary body 3.1, 3.2 is not desired, they can be moved to a position in which they no longer coincide with the material streams 24, or even broken down completely. The latter is how FIG. 2 illustrated by dissolving the brackets 34 from the rest of the device 1 quickly and easily.

FIG. 4 the drawing shows the part of the device 1 FIG. 2 in a rear view. In the upper part are the nozzle elements 25, which form the nozzle assembly 27 in their juxtaposition, while in the lower part of the two rotating bodies 3.1 and 3.2 with their bearings 31 and their rotary drives 32.1, 32.2 are visible.

In FIG. 5 is the device part of the Figures 2 and 4 shown in plan view, wherein now the view from above on the nozzle assembly 27 with the juxtaposed nozzle elements 25 drops, which are each supported on a nozzle carrier 26. Top in FIG. 5 a part of the frame 10 of the device 1 is visible. The rotating bodies are hidden here and not visible; only the two drives 32.1 and 32. 2 are visible left and right in Figure 6. <U> REFERENCE LIST: </ u> character designation 1 device 1' Zurüsteinheit 10 frame 11 bikes 12 Reservoir for marking material 13 Conveyor (dosing pump) 14 Movement direction of 1 15 cab 16 Storage container for glass beads 2 material outlet 20 outlet 21 material supply 22 air supply duct 23 discharge nozzle 24 material flows 24 ' material portions 25 nozzle elements 26 nozzle carrier 27 nozzle assembly 28 holder 3.1, 3.2 Rotational body (spiked roller) 30 Structural elements (spines) 31 overlays 32, 32.1, 32.2 rotary actuators 33 Working direction of rotation 34 consoles 4 mark 5 surface

Claims (11)

1. A method for creating markings (4), in particular marking lines, of highly viscous marking material, in particular a two-component cold plastic, on a surface (5) to be marked, in particular a road surface, wherein the marking material is discharged from a material supply and, before striking the surface (5) to be marked, is fed to a rotational body (3.1, 3.2), which moves relative to the surface (5) in longitudinal direction of the marking (4) which is to be created, and is applied to the surface (5) so as to be divided into unequal material portions by means of said rotational body, wherein the axis of rotation of the rotational body (3.1, 3.2) runs at right angles to the longitudinal direction of the marking (4), wherein the marking material is fed to the rotational body (3.1, 3.2) in the form of a plurality of marking material flows (24), which, viewed in longitudinal direction of the rotational body (3.1, 3.2), are discharged next to one another, and wherein the marking material is discharged under pressure, continuously or so as to pulsate or intermittently from a plurality of discharge nozzles (23),
   characterised in

   - that the individual marking material flows (24) are turned on or off in accordance with the marking (4) to be created and

   - that a first connected group of the marking material flows (24) is guided to a first rotational body (3.1) and/or that a second connected group of the marking material flows (24) is guided to a second rotational body (3.2), which can be rotated independently from the first rotational body (3.1).
2. The method according to claim 1, characterised in that the marking material flows (24) fed to the rotational bodies (3.1, 3.2) have a round or oval or square or rectangular material cross section.
3. A device (1) for creating markings (4), in particular marking lines, of highly viscous marking material, in particular a two-component cold plastic, on a surface (5) which is to be marked, in particular a road surface, comprising at least one material storage container (12), comprising at least one conveying device (13) for conveying marking material from the material storage container (12) to a material outlet (2), and comprising a rotational body (3.1, 3.2), which is arranged below the material outlet (2) and through which marking material flowing from the material outlet (2) can be divided into unequal material portions and can be applied to the surface (5), wherein, during operation, the device (1) can be moved relative to the surface (5) in longitudinal direction of the marking (4) to be created, wherein the axis of rotation of the rotational body (3.1, 3.2) runs at right angles to the longitudinal direction of the marking (4), wherein the marking material can be fed to the rotational body (3.1, 3.2) in the form of a plurality of marking material flows (24), which, viewed in longitudinal direction of the rotational body (3.1, 3.2), flow next to one another, wherein the material outlet (2) is formed by a plurality of outlet openings (20), which, viewed in longitudinal direction of the rotational body (3.1, 3.2), are arranged next to one another, and wherein the outlet openings (20) are discharge nozzles (23), through which the marking material can be discharged under pressure, continuously or so as to pulsate or intermittently,
   characterised in

   - that the individual outlet openings (20) can be released or locked in accordance with the marking (4), which is to be created, and

   - that a first rotational body (3.1) is arranged below a first connected group of the outlet openings (20) and that a second rotational body (3.2) which can be rotated independently from the first rotational body (3.1) is arranged below a second connected group of outlet openings.
4. The device according to claim 3, characterised in that the outlet openings (20) have a round or oval or square or rectangular cross section.
5. The device according to claim 3 or 4, characterised in that its own, individually controllable rotary drive (32.1, 32.2), preferably in each case a hydraulic motor, is assigned to each rotational body (3.1, 3.2).
6. The device according to any one of claims 3 to 5, characterised in that each rotational body (3.1, 3.2) is provided with structural elements (30), preferably formed by means of a spiked roller.
7. The device according to any one of claims 3 to 6, characterised in that the position of each rotational body (3.1, 3.2) can be adjusted relative to the material outlet (2), preferably in a horizontal direction parallel to the direction of movement (14) of the device (1) and/or can be displaced in a vertical direction or can be pivoted in a vertical plane.
8. The device according to any one of claims 3 to 7, characterised in that the individual discharge nozzles (23) are located in nozzle elements (25) which can be attached individually to a nozzle support (26) and which can be removed from the nozzle support (26) and which form a variable nozzle arrangement (27).
9. The device according to claim 8, characterised in that the individual nozzle elements (25) can be assembled at a changeable lateral distance to one another so as to form the nozzle arrangement (27).
10. The device according to any one of claims 3 to 9, characterised in that the conveying device (13) is formed by at least one metering pump.
11. The device according to any one of claims 5 to 10, characterised in that the rotational bodies (3.1, 3.2), including a rotational body support (31) and the rotary drives (32.1, 32.2) are embodied as an additional unit (1'), which can be mounted to the remaining device (1) and which can be separated from the remaining device (1).

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