EP2191903B1 - Method for maintaining the constancy of marking line width and marking machine for applying the method - Google Patents

Method for maintaining the constancy of marking line width and marking machine for applying the method Download PDF

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Publication number
EP2191903B1
EP2191903B1 EP09176988A EP09176988A EP2191903B1 EP 2191903 B1 EP2191903 B1 EP 2191903B1 EP 09176988 A EP09176988 A EP 09176988A EP 09176988 A EP09176988 A EP 09176988A EP 2191903 B1 EP2191903 B1 EP 2191903B1
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EP
European Patent Office
Prior art keywords
pressure
spray
marking
marked
marking line
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Application number
EP09176988A
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German (de)
French (fr)
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EP2191903A1 (en
Inventor
Frank Hofmann
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Hofmann GmbH Maschinenfabrik und Vertrieb
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Hofmann GmbH Maschinenfabrik und Vertrieb
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
    • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
    • E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68—Arrangements for adjusting the position of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/007—At least a part of the apparatus, e.g. a container, being provided with means, e.g. wheels, for allowing its displacement relative to the ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm

Definitions

  • the present invention relates to a method for keeping constant the marking line width at a standing under an injection pressure mark line color by means of at least one spray nozzle on a marking surface to be marked surface marking machines. Moreover, the invention relates to a marking machine for carrying out the method.
  • liquid, sprayable marking line colors are applied by high pressure or Airlessspritzspritz with movement of a marking machine in the longitudinal direction of the line to be marked surface.
  • the spray nozzles which can be used in the case of high-pressure spraying have the characteristic that when the ink flow rate changes, the pressure prevailing upstream changes slightly and slightly, but noticeably, the spray width of the triangular spray fan also changes, and the spray width increases with increasing pressure.
  • the object of the invention is to overcome the above-mentioned deficiencies and to abolish or at least reduce the influence of the marking speed on the generated marking line width to a non-disturbing degree.
  • the solution of the part of the object relating to the method succeeds according to the invention with a method of the type mentioned above, which is characterized in that the position of the spray nozzle with respect to the surface to be marked by means of the injection pressure or a pressure of another fluid dependent on the injection pressure the marking line width is controlled to be kept constant during injection pressure changes.
  • the injection pressure of the ink or a different pressure dependent thereon is used to control the position of the spray nozzle or of a spray gun having this relative to the surface to be marked in such a way that the injection pressure changes with the marking speed and thus with the flow rate which remains the same on the surface to be marked spray width remains the same.
  • the marking lines are always generated with the desired constant line width regardless of the marking speed.
  • a first embodiment provides that a distance of the spray nozzle is controlled to the surface to be marked.
  • a reduction of the distance leads to a smaller line width because of the widening with increasing distance, triangular spray fan, an increase of the distance increases the line width of the marking line.
  • a rotational position of the spray nozzle can be controlled about a substantially vertical axis relative to the surface to be marked.
  • a rotational position of the paint sprayer In a rotational position of the paint sprayer exactly transverse to the longitudinal direction of the marking line results in a maximum line width. Twisting the nozzle and the paint spray fan generated by it from this position leads to a reduction in the line width.
  • this method has the small disadvantage that the beginnings and ends of the marking line may have a more or less oblique course to the transverse direction of the marking line.
  • a rotational position of the spray nozzle is controlled about an axis extending substantially horizontally and transversely to the longitudinal direction of the marking line relative to the surface to be marked.
  • the marker line color is sprayed more or less steeply on the surface to be marked, whereby the distance from the nozzle to the surface and thus because of the widening with increasing distance, triangular spray fan and the marking line width can be varied.
  • the injection pressure or the pressure of the other fluid, which is dependent on the injection pressure is to act on a piston-cylinder unit which changes the position of the spray nozzle with respect to the surface to be marked and counteracts a restoring force.
  • the spray nozzle is adjusted in position until the force of the piston-cylinder unit is in equilibrium with the restoring force.
  • the spray nozzle is adjusted in position until the force of the piston-cylinder unit is in equilibrium with the restoring force.
  • the spray width change in relation to the desired spray width and thus the required adjustment of the spray nozzle is not only dependent on the injection pressure change, but often also dependent on the geometry of the spray nozzle and the marker line colors used. This means that the ratio of required adjustment of the spray nozzle for injection pressure change for different spray nozzles and colors varies in size and should therefore be changeable.
  • the invention therefore proposes that the force of the piston-cylinder unit and / or the restoring force be varied depending on the geometry of different spray nozzles and / or the properties of different marking line colors and set to desired values.
  • the restoring force is preferably generated by at least one spring.
  • the other fluid is a hydraulic fluid serving as drive fluid of a hydraulically driven pump for conveying the marker line color.
  • This hydraulic fluid can be readily fed directly to the piston-cylinder unit as pressurized fluid without any fear of malfunctions that could occur if the marking line color itself were supplied as pressure fluid to the piston-cylinder unit.
  • An alternative embodiment of the method proposes that the injection pressure or the pressure dependent on the injection pressure of the other fluid is detected by at least one pressure sensor and transmitted to an electrical or electronic control unit and that the control unit a the position of the spray nozzle with respect to the Surface-changing electrical or electronic adjusting device adjusted pressure-dependent.
  • the implementation of the change in the injection pressure in a change in position of the spray nozzle or gun is carried out here using electrical and / or electronic aids.
  • the solution of the marking machine of the part of the task succeeds according to the invention with a marking machine for the production of marking lines by spraying under a spray pressure mark line color by means of at least one spray nozzle on a surface to be marked, which is characterized in that the spray nozzle or a spray gun having them at a position in relation to the surface to be marked in dependence on the injection pressure or by a pressure of another fluid dependent on the injection pressure of the marking line width at injection pressure changes constantly holding adjustable mount is attached.
  • the method according to the invention can be carried out more economically and marking lines of constant line width can be produced, in particular at a high and / or changing marking speed.
  • the holder can be at a distance from the surface to be marked and / or at a substantially vertical axis relative to the surface to be marked and / or at an axis substantially horizontal and transverse to the longitudinal direction of the marking line relative to the axis be adjustable marking surface.
  • the width of the marking line generated by the paint spray fan emerging from the spray nozzle can be changed.
  • the holder is acted upon by a restoring force acting in the direction of increasing the width of the marking line, and the holder is counter to the restoring force by means of a piston-cylinder unit which can be acted upon by the injection pressure or by the pressure of the other fluid dependent on the injection pressure adjustable in the direction of a reduction of the width of the marking line.
  • the machine is technically simple and thereby cost-effectively manufactured and operable despite the improved function.
  • the effect of the force of the piston-cylinder unit and / or the restoring force is suitably variable depending on the geometry of different spray nozzles and / or the properties of different marker line colors and adjustable to desired values in order to compensate for these further influences on the spray width can ,
  • the restoring force is preferably generated by at least one spring, since this is a cost-effective and reliable component.
  • a technically favorable way of changing the above-mentioned force action is to change lever lengths.
  • the holder has a coupling lever arrangement connected to the spring and to the piston-cylinder unit and that the spring and / or the piston-cylinder unit can be changed in their connection position to the coupling lever arrangement.
  • the leverage ratios of said variable coupling lever assembly and also the piston surface of the piston-cylinder unit and the spring must be designed so that the spray nozzle is adjusted in position relative to the surface to be marked in a manner and to the extent necessary to compensate for the change in spray width and mark line width change occurring without adjustment of the spray nozzle.
  • the spray width change in relation to the desired spray width and thus the required adjustment of the spray nozzle is dependent on the spray pressure change, the geometry of the spray nozzle and the color used.
  • the invention provides that the marking machine has at least one hydraulically driven pump for conveying the marking line color and that the other fluid is a hydraulic fluid, which serves as a drive fluid of a hydraulic motor of the pump.
  • the pressure fluid used anyway for the ink pump drive is also used for the operation of the piston-cylinder unit for the spray nozzle adjustment, which keeps the machine technically simple.
  • An alternative embodiment of the marking machine provides that it has at least one of the injection pressure or the pressure of the injection of the other fluid pressure sensor which is connected to an input of an electric or electronic control unit, and that with the control unit, a position of the holder connected in relation to the surface to be marked pressure-dependent changing electrical or electronic control device.
  • the actuator may here be e.g. an electrically driven adjusting spindle or an electric stepping motor, which can be operated in accordance with the pressure measurement values of the pressure sensor via the control unit that evaluates this.
  • Such a control unit can also be connected to an optical width measuring device for the continuous detection of the width of the generated marking line and for the detection and correction of possibly occurring width changes.
  • a marking machine 1 is equipped with a paint pump 2, which is driven by a hydraulic motor 3 via a connecting shaft 4 and promotes the marking line color via a line 16 to a spray gun 5 with spray nozzle 6.
  • the spray nozzle 6 generates a spray fan 15 from the marking line color, whereby a marking line 14 'is generated when moving the marking machine 1 in the direction of movement 18 on a surface 14 to be marked.
  • a change in the pump delivery rate has a change in the injection pressure, with unchanged geometry of the spray nozzle 6, i. the pump delivery pressure and thus directly dependent also on a line 7 to the hydraulic motor 3 supplied hydraulic oil result, and that these pressures increase with increasing ink flow.
  • FIG. 2 the spraying fan emerging from the spray nozzle 6 is shown, once marked with 15 for lower injection pressure with a smaller opening angle and 15 'for larger injection pressure with a larger opening angle.
  • the spray nozzle 6 is lowered at the larger injection pressure to a displacement path s with respect to the nozzle position at lower injection pressure to achieve the same width B of the marking line 14 'on the surface 14 to be marked as at at a larger injection pressure and thus larger opening angle of the spray fan the lower injection pressure.
  • the spray gun 5 is fixed to a bracket 8 with a vertical support, the two coupling levers 9 and 10 on a support 12th is articulated vertically displaceable in a parallelogram.
  • the carrier 12 is rigidly connected to a vehicle 11 which carries the marking machine 1.
  • the coupling lever 9 has two lever arms and is pivotally mounted at the pivot point 9 'on the rigid support 12.
  • the lever arm of the coupling lever 9 from the vertical support of the holder 8 to the fulcrum 9 ' has the length e.
  • a piston-cylinder unit 13 here a hydraulic cylinder arranged.
  • the lever arm of the piston-cylinder unit 13 to the pivot point 9 'here has the length a.
  • a spring 17 is disposed between the extended beyond the carrier 12 also arm of the coupling lever 9 and the carrier 12, whose force acting on the coupling lever 9 is directed downward and thus counteracts the force of the piston-cylinder unit 13.
  • the lever arm of the spring 17 to the pivot point 9 'here has the fixed length b and the spring 17 has the spring travel t.
  • the lever length a from the pivot point 9 'of the coupling lever 9 to the pivot point 13' is Piston-cylinder unit 13 changeable by the articulation point 13 'along the coupling lever 9 can be offset or moved.
  • the spring travel t and thus the lever ratio e / b increases the spray nozzle displacement s at a certain injection pressure change.
  • the injection pressure-dependent spray nozzle displacement s can be adjusted according to the properties of different spray nozzles 6 and marking line colors.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Duplication Or Marking (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Tyre Moulding (AREA)
  • General Factory Administration (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The method involves injecting marking line color e.g. yellow, on a surface (14) to be marked using an injection nozzle (6) of a marking machine (1), where the line color is under injection pressure. Position of the nozzle is controlled based on marked surface with the help of injection pressure of fluid, and marking line width is controlled by keeping the injection pressure at constant level. Distance (A) of the nozzle on the marked surface is controlled, and rotational position of the nozzle is controlled around vertical axis relative to the marked surface. An independent claim is also included for a marking machine comprising an injection nozzle.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Konstanthaltung der Markierungslinienbreite bei eine unter einem Spritzdruck stehende Markierungslinienfarbe mittels mindestens einer Spritzdüse auf eine zu markierende Oberfläche verspritzenden Markierungsmaschinen. Außerdem betrifft die Erfindung eine Markierungsmaschine zur Durchführung des Verfahrens.The present invention relates to a method for keeping constant the marking line width at a standing under an injection pressure mark line color by means of at least one spray nozzle on a marking surface to be marked surface marking machines. Moreover, the invention relates to a marking machine for carrying out the method.

Zur Erzeugung von Markierungslinien, insbesondere auf Straßen oder auf anderen Verkehrsflächen, mittels herkömmlicher Markierungsmaschinen, wie sie etwa aus Patentschrift DE 1 927 622C1 bekannt sind, werden flüssige, verspritzbare Markierungslinienfarben durch Hochdruck- oder Airlessverspritzung unter Bewegung einer Markierungsmaschine in Linienlängsrichtung auf die zu markierende Oberfläche aufgebracht. Die bei der Hochdruckverspritzung einsetzbaren Spritzdüsen weisen die Eigenschaft auf, dass sich bei Veränderung der Farbdurchflussmenge der stromaufwärts herrschende Druck ändert und geringfügig, aber merklich, sich auch die Spritzbreite des dreieckförmigen Spritzfächers ändert, und zwar wird mit zunehmendem Druck die Spritzbreite größer.For the production of marking lines, in particular on roads or on other traffic areas, by means of conventional marking machines, such as those described in patent specification DE 1 927 622 C1 are known, liquid, sprayable marking line colors are applied by high pressure or Airlessspritzspritz with movement of a marking machine in the longitudinal direction of the line to be marked surface. The spray nozzles which can be used in the case of high-pressure spraying have the characteristic that when the ink flow rate changes, the pressure prevailing upstream changes slightly and slightly, but noticeably, the spray width of the triangular spray fan also changes, and the spray width increases with increasing pressure.

Bei Markierungsverfahren, bei denen zwecks Konstanthaltung der auf den laufenden Linienmeter aufzubringenden Farbmenge der sich in der Spritzdüse einstellende Farbdurchfluss proportional zur Markiergeschwindigkeit, d.h. zur Fahrgeschwindigkeit der Markierungsmaschine, geregelt wird, ergeben sich bei Geschwindigkeitsänderungen zwangsläufig Änderungen des Druckes der Farbe und damit der Spritzbreite und der Markierungslinienbreite. Diese Änderungen der Markierungslinienbreite sind, wenn sie ein bestimmtes Maß überschreiten, nicht mehr tolerierbar und werden beanstandet. Zur Vermeidung derartiger unzulässiger Linienbreitenänderungen muss die maximale Markiergeschwindigkeit auf ein geeignetes Maß begrenzt werden, obwohl ansonsten technisch durchaus eine höhere Geschwindigkeit möglich wäre. Dies führt zu einem verlangsamten Ablauf des Markiereinsatzes und zu einem unwirtschaftlicheren Betrieb der Markierungsmaschine.In marking process, in which for the purpose of keeping constant on the running line meter applied color amount of adjusting in the spray paint flow proportional to the marking speed, ie the driving speed of the marking machine is controlled, resulting in speed changes inevitably changes in the pressure of the paint and thus the spray width and the marking line width. These mark line width changes, if they exceed a certain level, become intolerable and objectionable. To avoid such improper line width changes, the maximum marking speed must be limited to an appropriate level, although otherwise technically a higher speed it is possible. This leads to a slowed-down sequence of the marking operation and to a more uneconomical operation of the marking machine.

Die Erfindung hat zum Ziel, die vorstehend angegebenen Mängel zu beseitigen und den Einfluss der Markiergeschwindigkeit auf die erzeugte Markierungslinienbreite abzuschaffen oder wenigstens auf ein nicht störendes Maß zu reduzieren.The object of the invention is to overcome the above-mentioned deficiencies and to abolish or at least reduce the influence of the marking speed on the generated marking line width to a non-disturbing degree.

Die Lösung des das Verfahren betreffenden Teils der Aufgabe gelingt erfindungsgemäß mit einem Verfahren der eingangs genannten Art, das dadurch gekennzeichnet ist, dass die Position der Spritzdüse in Bezug auf die zu markierenden Oberfläche mit Hilfe des Spritzdruckes oder eines von dem Spritzdruck abhängigen Druckes eines anderen Fluids die Markierungslinienbreite bei Spritzdruckänderungen konstant haltend gesteuert wird.The solution of the part of the object relating to the method succeeds according to the invention with a method of the type mentioned above, which is characterized in that the position of the spray nozzle with respect to the surface to be marked by means of the injection pressure or a pressure of another fluid dependent on the injection pressure the marking line width is controlled to be kept constant during injection pressure changes.

Erfindungsgemäß wird dabei der sich mit der Markiergeschwindigkeit und damit mit der Durchflussmenge ändernde Spritzdruck der Farbe oder ein davon abhängiger anderer Druck dazu benutzt, die Position der Spritzdüse oder einer diese aufweisenden Spritzpistole relativ zu der zu markierenden Oberfläche so zu steuern, dass bei sich änderndem Spritzdruck die sich auf der zu markierenden Oberfläche ergebende Spritzbreite gleich bleibt. Auf diese Weise werden die Markierungslinien unabhängig von der Markiergeschwindigkeit immer mit der gewünschten konstanten Linienbreite erzeugt.In accordance with the invention, the injection pressure of the ink or a different pressure dependent thereon is used to control the position of the spray nozzle or of a spray gun having this relative to the surface to be marked in such a way that the injection pressure changes with the marking speed and thus with the flow rate which remains the same on the surface to be marked spray width remains the same. In this way, the marking lines are always generated with the desired constant line width regardless of the marking speed.

Eine erste Ausgestaltung sieht vor, dass ein Abstand der Spritzdüse zu der zu markierenden Oberfläche gesteuert wird. Eine Verkleinerung des Abstandes führt wegen des sich mit wachsendem Abstand verbreiternden, dreieckigen Spritzfächers zu einer geringeren Linienbreite, eine Vergrößerung des Abstandes vergrößert die Linienbreite der Markierungslinie.A first embodiment provides that a distance of the spray nozzle is controlled to the surface to be marked. A reduction of the distance leads to a smaller line width because of the widening with increasing distance, triangular spray fan, an increase of the distance increases the line width of the marking line.

Alternativ oder zusätzlich kann eine Verdrehstellung der Spritzdüse um eine im Wesentlichen vertikale Achse relativ zu der zu markierenden Oberfläche gesteuert werden. Bei einer Verdrehstellung des Farbspritzfächers genau quer zur Längsrichtung der Markierungslinie ergibt sich eine maximale Linienbreite. Ein Verdrehen der Düse und des von ihr erzeugten Farbspritzfächers aus dieser Lage führt zu einer Verkleinerung der Linienbreite. Dieses Verfahren hat allerdings den kleinen Nachteil, dass die Anfänge und Enden der Markierungslinie unter Umständen einen mehr oder weniger schrägen Verlauf zur Querrichtung der Markierungslinie aufweisen.Alternatively or additionally, a rotational position of the spray nozzle can be controlled about a substantially vertical axis relative to the surface to be marked. In a rotational position of the paint sprayer exactly transverse to the longitudinal direction of the marking line results in a maximum line width. Twisting the nozzle and the paint spray fan generated by it from this position leads to a reduction in the line width. However, this method has the small disadvantage that the beginnings and ends of the marking line may have a more or less oblique course to the transverse direction of the marking line.

Weiterhin besteht alternativ oder zusätzlich die Möglichkeit, dass eine Verdrehstellung der Spritzdüse um eine im Wesentlichen horizontal und quer zur Längsrichtung der Markierungslinie verlaufende Achse relativ zu der zu markierenden Oberfläche gesteuert wird. Hierdurch wird die Markierungslinienfarbe mehr oder weniger steil auf die zu markierende Oberfläche aufgespritzt, wodurch die Strecke von der Düse bis zur Oberfläche und damit wegen des sich mit wachsender Strecke verbreiternden, dreieckigen Spritzfächers auch die Markierungslinienbreite variiert werden.Furthermore, alternatively or additionally, there is the possibility that a rotational position of the spray nozzle is controlled about an axis extending substantially horizontally and transversely to the longitudinal direction of the marking line relative to the surface to be marked. As a result, the marker line color is sprayed more or less steeply on the surface to be marked, whereby the distance from the nozzle to the surface and thus because of the widening with increasing distance, triangular spray fan and the marking line width can be varied.

Nach einer bevorzugten Ausführungsform soll der Spritzdruck oder der von dem Spritzdruck abhängige Druck des anderen Fluids auf eine die Position der Spritzdüse in Bezug auf die zu markierenden Oberfläche verändernde und einer Rückstellkraft entgegenwirkende Kolben-Zylinder-Einheit wirken. Dabei wird bei sich änderndem Spritzdruck die Spritzdüse soweit in ihrer Position verstellt, bis sich die Kraft der Kolben-Zylinder-Einheit im Gleichgewicht mit der Rückstellkraft befindet. Hier bewirkt der sich mit der Markiergeschwindigkeit und damit mit der Durchflussmenge ändernde Spritzdruck der Farbe oder ein davon abhängiger anderer Druck direkt eine Positionsverstellung der Spritzdüse oder einer diese aufweisenden Spritzpistole zur Konstanthaltung der Breite der erzeugten Markierungslinie.According to a preferred embodiment, the injection pressure or the pressure of the other fluid, which is dependent on the injection pressure, is to act on a piston-cylinder unit which changes the position of the spray nozzle with respect to the surface to be marked and counteracts a restoring force. In this case, with changing injection pressure, the spray nozzle is adjusted in position until the force of the piston-cylinder unit is in equilibrium with the restoring force. Here causes the changing with the marking speed and thus with the flow rate injection pressure of the color or a dependent other pressure directly a position adjustment of the spray nozzle or a spray gun having this to keep constant the width of the generated marking line.

Die Spritzbreitenänderung im Verhältnis zur Soll-Spritzbreite und damit die erforderliche Verstellung der Spritzdüse ist nicht nur abhängig von der Spritzdruckänderung, sondern oft auch abhängig von der Geometrie der Spritzdüse und von den verwendeten Markierungslinienfarben. Das bedeutet, dass das Verhältnis von erforderlichem Verstellweg der Spritzdüse zur Spritzdruckänderung für unterschiedliche Spritzdüsen und Farben unterschiedlich groß ist und deshalb veränderbar sein soll. Die Erfindung schlägt daher vor, dass die Kraft der Kolben-Zylinder-Einheit und/oder die Rückstellkraft in Abhängigkeit von der Geometrie unterschiedlicher Spritzdüsen und/oder von den Eigenschaften unterschiedlicher Markierungslinienfarbenn variiert wird und auf gewünschte Werte eingestellt wird.The spray width change in relation to the desired spray width and thus the required adjustment of the spray nozzle is not only dependent on the injection pressure change, but often also dependent on the geometry of the spray nozzle and the marker line colors used. This means that the ratio of required adjustment of the spray nozzle for injection pressure change for different spray nozzles and colors varies in size and should therefore be changeable. The invention therefore proposes that the force of the piston-cylinder unit and / or the restoring force be varied depending on the geometry of different spray nozzles and / or the properties of different marking line colors and set to desired values.

Zwecks einfacher und dabei zuverlässiger Funktion wird die Rückstellkraft bevorzugt durch mindestens eine Feder erzeugt.For the purpose of simple and reliable function, the restoring force is preferably generated by at least one spring.

Bevorzugt ist das andere Fluid eine Hydraulikflüssigkeit, die als Antriebsfluid einer hydraulisch antreibbaren Pumpe zur Förderung der Markierungslinienfarbe dient. Diese Hydraulikflüssigkeit kann problemlos unmittelbar der Kolben-Zylinder-Einheit als Druckfluid zugeführt werden, ohne dass Funktionsstörungen zu befürchten sind, die auftreten könnten, wenn die Markierungslinienfarbe selbst als Druckfluid der Kolben-Zylinder-Einheit zugeführt würde.Preferably, the other fluid is a hydraulic fluid serving as drive fluid of a hydraulically driven pump for conveying the marker line color. This hydraulic fluid can be readily fed directly to the piston-cylinder unit as pressurized fluid without any fear of malfunctions that could occur if the marking line color itself were supplied as pressure fluid to the piston-cylinder unit.

Eine alternative Ausgestaltung des Verfahrens schlägt vor, dass der Spritzdruck oder der von dem Spritzdruck abhängige Druck des anderen Fluids von mindestens einem Drucksensor erfasst und an eine elektrische oder elektronische Steuereinheit übermittelt wird und dass die Steuereinheit eine die Position der Spritzdüse in Bezug auf die zu markierende Oberfläche verändernde elektrische oder elektronische Stelleinrichtung druckabhängig verstellt. Die Umsetzung der Änderung des Spritzdruckes in eine Positionsänderung der Spritzdüse oder -pistole wird hier unter Nutzung von elektrischen und/oder elektronischen Hilfsmitteln durchgeführt.An alternative embodiment of the method proposes that the injection pressure or the pressure dependent on the injection pressure of the other fluid is detected by at least one pressure sensor and transmitted to an electrical or electronic control unit and that the control unit a the position of the spray nozzle with respect to the Surface-changing electrical or electronic adjusting device adjusted pressure-dependent. The implementation of the change in the injection pressure in a change in position of the spray nozzle or gun is carried out here using electrical and / or electronic aids.

Die Lösung des die Markierungsmaschine betreffenden Teils der Aufgabe gelingt erfindungsgemäß mit einer Markierungsmaschine für die Erzeugung von Markierungslinien durch Verspritzen von unter einem Spritzdruck stehender Markierungslinienfarbe mittels mindestens einer Spritzdüse auf eine zu markierende Oberfläche, die dadurch gekennzeichnet ist, dass die Spritzdüse oder eine diese aufweisende Spritzpistole an einer in ihrer Position in Bezug auf die zu markierenden Oberfläche in Abhängigkeit von dem Spritzdruck oder von einem vom Spritzdruck abhängigen Druck eines anderen Fluids die Markierungslinienbreite bei Spritzdruckänderungen konstant haltend verstellbaren Halterung angebracht ist.The solution of the marking machine of the part of the task succeeds according to the invention with a marking machine for the production of marking lines by spraying under a spray pressure mark line color by means of at least one spray nozzle on a surface to be marked, which is characterized in that the spray nozzle or a spray gun having them at a position in relation to the surface to be marked in dependence on the injection pressure or by a pressure of another fluid dependent on the injection pressure of the marking line width at injection pressure changes constantly holding adjustable mount is attached.

Mit der vorstehend angegebenen Maschine kann das erfindungsgemäße Verfahren wirtschaftlicher ausgeführt werden und es können insbesondere bei einer hohen und/oder wechselnden Markiergeschwindigkeit Markierungslinien von konstanter Linienbreite erzeugt werden.With the above-mentioned machine, the method according to the invention can be carried out more economically and marking lines of constant line width can be produced, in particular at a high and / or changing marking speed.

In der Markierungsmaschine kann dabei die Halterung in ihrem Abstand zu der zu markierenden Oberfläche und/oder um eine im Wesentlichen vertikale Achse relativ zu der zu markierenden Oberfläche und/oder um eine im Wesentlichen horizontal und quer zur Längsrichtung der Markierungslinie verlaufende Achse relativ zu der zu markierenden Oberfläche verstellbar sein. Mit jeder der genannten Verstellungsarten kann die Breite der mit dem aus der Spritzdüse austretenden Farbspritzfächer erzeugten Markierungslinie verändert werden.In the marking machine, the holder can be at a distance from the surface to be marked and / or at a substantially vertical axis relative to the surface to be marked and / or at an axis substantially horizontal and transverse to the longitudinal direction of the marking line relative to the axis be adjustable marking surface. With each of the mentioned types of adjustment For example, the width of the marking line generated by the paint spray fan emerging from the spray nozzle can be changed.

In einer bevorzugten Ausführungsform der Markierungsmaschine ist die Halterung mit einer in Richtung einer Vergrößerung der Breite der Markierungslinie wirkenden Rückstellkraft beaufschlagt und die Halterung ist gegen die Rückstellkraft mittels einer mit dem Spritzdruck oder mit dem vom Spritzdruck abhängigen Druck des anderen Fluids beaufschlagbaren Kolben-Zylinder-Einheit in Richtung einer Verkleinerung der Breite der Markierungslinie verstellbar. In dieser Ausführung ist die Maschine technisch einfach und dadurch trotz der verbesserten Funktion kostengünstig herstellbar und betreibbar.In a preferred embodiment of the marking machine, the holder is acted upon by a restoring force acting in the direction of increasing the width of the marking line, and the holder is counter to the restoring force by means of a piston-cylinder unit which can be acted upon by the injection pressure or by the pressure of the other fluid dependent on the injection pressure adjustable in the direction of a reduction of the width of the marking line. In this embodiment, the machine is technically simple and thereby cost-effectively manufactured and operable despite the improved function.

Die Wirkung der Kraft der Kolben-Zylinder-Einheit und/oder der Rückstellkraft ist zweckmäßig in Abhängigkeit von der Geometrie unterschiedlicher Spritzdüsen und/oder von den Eigenschaften unterschiedlicher Markierungslinienfarben varüerbar und auf gewünschte Werte einstellbar, um auch diese weiteren Einflüsse auf die Spritzbreite ausgleichen zu können.The effect of the force of the piston-cylinder unit and / or the restoring force is suitably variable depending on the geometry of different spray nozzles and / or the properties of different marker line colors and adjustable to desired values in order to compensate for these further influences on the spray width can ,

Die Rückstellkraft ist bevorzugt durch mindestens eine Feder erzeugt, da diese ein kostengünstiges und zuverlässiges Bauteil ist.The restoring force is preferably generated by at least one spring, since this is a cost-effective and reliable component.

Eine technisch günstige Art der Änderung der vorstehend erwähnten Kraftwirkung besteht in einer Änderung von Hebellängen. Aus diesem Grund ist bevorzugt vorgesehen, dass die Halterung eine mit der Feder und mit der Kolben-Zylinder-Einheit verbundene Koppelhebelanordnung aufweist und dass die Feder und/oder die Kolben-Zylinder-Einheit in ihrer Verbindungsposition zu der Koppelhebelanordnung veränderbar sind/ist. Die Hebelverhältnisse der erwähnten, veränderbaren Koppelhebelanordnung und außerdem die Kolbenfläche der Kolben-Zylinder-Einheit und die Feder müssen so ausgelegt sein, dass sich die Spritzdüse in ihrer Position relativ zu der zu markierenden Oberfläche in einer Weise und in einem Maße verstellt, die notwendig sind, die ohne Verstellung der Spritzdüse eintretende Spritzbreitenänderung und Markierungslinienbreitenänderung auszugleichen. Die Spritzbreitenänderung im Verhältnis zur Soll-Spritzbreite und damit die erforderliche Verstellung der Spritzdüse ist abhängig von der Spritzdruckänderung, von der Geometrie der Spritzdüse und von der verwendeten Farbe. Das bedeutet, dass das Verhältnis von erforderlicher Verstellbewegung der Spritzdüse zur Spritzdruckänderung für unterschiedliche Spritzdüsen und Markierungslinienfarben unterschiedlich groß ist und deshalb veränderbar sein muss. Dies erfolgt hier z.B. dadurch, dass die Kraft der Kolben-Zylinder-Einheit nicht direkt sondern über Koppelhebel mit veränderbaren Hebellängen auf die Feder wirkt, wodurch die Wirkung der Kraft der Kolben-Zylinder-Einheit auf die Längenänderung der Feder und damit die Spritzdüsenverstellung veränderbar und für den jeweiligen Einsatzfall optimierbar ist.A technically favorable way of changing the above-mentioned force action is to change lever lengths. For this reason, it is preferably provided that the holder has a coupling lever arrangement connected to the spring and to the piston-cylinder unit and that the spring and / or the piston-cylinder unit can be changed in their connection position to the coupling lever arrangement. The leverage ratios of said variable coupling lever assembly and also the piston surface of the piston-cylinder unit and the spring must be designed so that the spray nozzle is adjusted in position relative to the surface to be marked in a manner and to the extent necessary to compensate for the change in spray width and mark line width change occurring without adjustment of the spray nozzle. The spray width change in relation to the desired spray width and thus the required adjustment of the spray nozzle is dependent on the spray pressure change, the geometry of the spray nozzle and the color used. This means that the ratio of required adjustment movement of the spray nozzle for injection pressure change for different Spray nozzles and marking line colors varies in size and therefore must be changeable. This is done here, for example, by the fact that the force of the piston-cylinder unit does not act directly but via coupling lever with variable lever lengths on the spring, whereby the effect of the force of the piston-cylinder unit on the change in length of the spring and thus the spray nozzle adjustment changeable and can be optimized for the respective application.

Weiter ist erfindungsgemäß vorgesehen, dass die Markierungsmaschine mindestens eine hydraulisch antreibbare Pumpe zur Förderung der Markierungslinienfarbe aufweist und dass das andere Fluid eine Hydraulikflüssigkeit ist, die als Antriebsfluid eines Hydraulikmotors der Pumpe dient. Somit wird das ohnehin für den Farbpumpenantrieb verwendete Druckfluid auch für die Betätigung der Kolben-Zylinder-Einheit für die Spritzdüsenverstellung genutzt, was die Maschine technisch einfach hält.Further, the invention provides that the marking machine has at least one hydraulically driven pump for conveying the marking line color and that the other fluid is a hydraulic fluid, which serves as a drive fluid of a hydraulic motor of the pump. Thus, the pressure fluid used anyway for the ink pump drive is also used for the operation of the piston-cylinder unit for the spray nozzle adjustment, which keeps the machine technically simple.

Eine alternative Ausführungsform der Markierungsmaschine sieht vor, dass sie mindestens einen den Spritzdruck oder den von dem Spritzdruck abhängigen Druck des anderen Fluids erfassenden Drucksensor aufweist, der mit einem Eingang einer elektrischen oder elektronischen Steuereinheit verbunden ist, und dass mit der Steuereinheit eine die Position der Halterung in Bezug auf die zu markierenden Oberfläche druckabhängig verändernde elektrische oder elektronische Stelleinrichtung verbunden ist. Die Stelleinrichtung kann hier z.B. eine elektrisch angetriebene Stellspindel oder ein elektrischer Schrittmotor sein, die/der nach Maßgabe der Druckmesswerte des Drucksensors über die diese auswertende Steuereinheit betreibbar ist.An alternative embodiment of the marking machine provides that it has at least one of the injection pressure or the pressure of the injection of the other fluid pressure sensor which is connected to an input of an electric or electronic control unit, and that with the control unit, a position of the holder connected in relation to the surface to be marked pressure-dependent changing electrical or electronic control device. The actuator may here be e.g. an electrically driven adjusting spindle or an electric stepping motor, which can be operated in accordance with the pressure measurement values of the pressure sensor via the control unit that evaluates this.

Eine solche Steuereinheit kann auch mit einer optischen Breitenmesseinrichtung zur stetigen Erfassung der Breite der erzeugten Markierungslinie und zur Feststellung und Korrektur von gegebenenfalls auftretenden Breitenänderungen verbunden sein.Such a control unit can also be connected to an optical width measuring device for the continuous detection of the width of the generated marking line and for the detection and correction of possibly occurring width changes.

Anhand einer Zeichnung wird ein Ausführungsbeispiel der Erfindung näher beschrieben. Die Figuren der Zeichnung zeigen:

Figur 1
eine Markierungsmaschine in schematischer Seitenansicht und
Figur 2
zwei aus einer Spritzdüse der Markierungsmaschine bei zwei verschie- denen Spritzdrücken austretende Spritzfächer, in einer gegenüber der Figur 1 um 90° gedrehten Ansicht.
Reference to a drawing, an embodiment of the invention will be described in more detail. The figures of the drawing show:
FIG. 1
a marking machine in a schematic side view and
FIG. 2
two spray chambers emerging from a spray nozzle of the marking machine at two different injection pressures, in a direction opposite to the spray jet FIG. 1 rotated by 90 ° view.

Gemäß Figur 1 ist eine Markierungsmaschine 1 mit einer Farbpumpe 2 ausgerüstet, die von einem Hydraulikmotor 3 über eine Verbindungswelle 4 angetrieben wird und die Markierungslinienfarbe über eine Leitung 16 zu einer Spritzpistole 5 mit Spritzdüse 6 fördert. Die Spritzdüse 6 erzeugt einen Spritzfächer 15 aus der Markierungslinienfarbe, wodurch bei Fortbewegung der Markierungsmaschine 1 in Bewegungsrichtung 18 auf einer zu markierenden Oberfläche 14 eine Markierungslinie 14' erzeugt wird.According to FIG. 1 a marking machine 1 is equipped with a paint pump 2, which is driven by a hydraulic motor 3 via a connecting shaft 4 and promotes the marking line color via a line 16 to a spray gun 5 with spray nozzle 6. The spray nozzle 6 generates a spray fan 15 from the marking line color, whereby a marking line 14 'is generated when moving the marking machine 1 in the direction of movement 18 on a surface 14 to be marked.

Zur Konstanthaltung der pro Längeneinheit der Markierungslinie 14' ausgebrachten Farbmenge ist es üblich, die Fördermenge der Farbpumpe 2 an die Bewegungsgeschwindigkeit der Markierungsmaschine 1 relativ zu der Oberfläche 14 zu koppeln. Bei steigender Bewegungsgeschwindigkeit wird also die Fördermenge der Pumpe 2 erhöht und umgekehrt.In order to keep constant the quantity of ink applied per unit length of the marking line 14 ', it is customary to couple the delivery rate of the paint pump 2 to the movement speed of the marking machine 1 relative to the surface 14. With increasing speed of movement so the flow rate of the pump 2 is increased and vice versa.

Eine Veränderung der Pumpenfördermenge hat bei unveränderter Geometrie der Spritzdüse 6 eine Veränderung des Spritzdruckes, d.h. des Pumpenförderdruckes und damit direkt abhängig auch des über eine Leitung 7 dem Hydraulikmotor 3 zugeführten Hydrauliköls zur Folge, und zwar steigen diese Drücke mit zunehmender Farbfördermenge. Bei einem steigenden Spritzdruck ergibt sich an der Spritzdüse 6 ein größer werdender Öffnungswinkel des Spritzfächers 15.A change in the pump delivery rate has a change in the injection pressure, with unchanged geometry of the spray nozzle 6, i. the pump delivery pressure and thus directly dependent also on a line 7 to the hydraulic motor 3 supplied hydraulic oil result, and that these pressures increase with increasing ink flow. With an increasing injection pressure results in the spray nozzle 6 a larger opening angle of the spray fan 15th

In Figur 2 ist der aus der Spritzdüse 6 austretende Spritzfächer dargestellt, und zwar einmal gekennzeichnet mit 15 für geringeren Spritzdruck mit kleinerem Öffnungswinkel und mit 15' für größeren Spritzdruck mit größerem Öffnungswinkel. Dabei ist die Spritzdüse 6 bei dem größeren Spritzdruck um einen Verschiebungsweg s gegenüber der Düsenposition bei geringerem Spritzdruck abgesenkt, um bei größerem Spritzdruck und dadurch größerem Öffnungswinkel des Spritzfächers die gleiche Breite B der erzeugten Markierungslinie 14' auf der zu markierenden Oberfläche 14 zu erreichen wie bei dem geringeren Spritzdruck.In FIG. 2 the spraying fan emerging from the spray nozzle 6 is shown, once marked with 15 for lower injection pressure with a smaller opening angle and 15 'for larger injection pressure with a larger opening angle. In this case, the spray nozzle 6 is lowered at the larger injection pressure to a displacement path s with respect to the nozzle position at lower injection pressure to achieve the same width B of the marking line 14 'on the surface 14 to be marked as at at a larger injection pressure and thus larger opening angle of the spray fan the lower injection pressure.

Wie wieder die Figur 1 zeigt, ist die Spritzpistole 5 an einer Halterung 8 mit einem vertikalen Träger befestigt, der über zwei Koppelhebel 9 und 10 an einem Träger 12 in einer Parallelogrammanordnung vertikal verschieblich angelenkt ist. Der Träger 12 ist starr mit einem Fahrzeug 11 verbundenen, das die Markierungsmaschine 1 trägt. Der Koppelhebel 9 hat zwei Hebelarme und ist im Drehpunkt 9' an dem starren Träger 12 verschwenkbar gelagert. Der Hebelarm des Koppelhebels 9 von dem vertikalen Träger der Halterung 8 zum Drehpunkt 9' hat die Länge e.Like that again FIG. 1 shows, the spray gun 5 is fixed to a bracket 8 with a vertical support, the two coupling levers 9 and 10 on a support 12th is articulated vertically displaceable in a parallelogram. The carrier 12 is rigidly connected to a vehicle 11 which carries the marking machine 1. The coupling lever 9 has two lever arms and is pivotally mounted at the pivot point 9 'on the rigid support 12. The lever arm of the coupling lever 9 from the vertical support of the holder 8 to the fulcrum 9 'has the length e.

An dem über den Träger 12 hinaus verlängerten Arm des oberen Koppelhebels 9 und dem Träger 12 ist eine Kolben-Zylinder-Einheit 13, hier ein Hydraulikzylinder, angeordnet. Der Hebelarm von der Kolben-Zylinder-Einheit 13 zum Drehpunkt 9' hat hier die Länge a. Bei Druckbeaufschlagung der Kolben-Zylinder-Einheit 13 wird der über den Träger 12 hinaus verlängerte Arm des Koppelhebels 9 um den Drehpunkt 9' nach oben und somit die Spritzpistole 5 nach unten in Richtung zu der zu markierenden Oberfläche 14 gedrückt.At the above the support 12 also extended arm of the upper coupling lever 9 and the carrier 12 is a piston-cylinder unit 13, here a hydraulic cylinder arranged. The lever arm of the piston-cylinder unit 13 to the pivot point 9 'here has the length a. When the piston-cylinder unit 13 is pressurized, the arm of the coupling lever 9, which is extended beyond the support 12, is pushed upward about the pivot point 9 'and thus the spray gun 5 is pressed down in the direction of the surface 14 to be marked.

Ferner ist zwischen dem über den Träger 12 hinaus verlängerten Arm des Koppelhebels 9 und dem Träger 12 eine Feder 17 angeordnet, deren an dem Koppelhebel 9 angreifende Kraft nach unten gerichtet ist und somit der Kraft der Kolben-Zylinder-Einheit 13 entgegenwirkt. Der Hebelarm von der Feder 17 zum Drehpunkt 9' hat hier die feste Länge b und die Feder 17 hat den Federweg t.Further, a spring 17 is disposed between the extended beyond the carrier 12 also arm of the coupling lever 9 and the carrier 12, whose force acting on the coupling lever 9 is directed downward and thus counteracts the force of the piston-cylinder unit 13. The lever arm of the spring 17 to the pivot point 9 'here has the fixed length b and the spring 17 has the spring travel t.

Um zu erreichen, dass die bei einer bestimmtem Spritzdruckänderung bewirkte Spritzpistolenverschiebung s wegen des bei den verschiedenen Spritzdüsen unterschiedlichen Einflusses der Verschiebung s auf die Linienbreitenänderung im Verhältnis zur Spritzdruckänderung veränderbar ist, ist die Hebellänge a vom Drehpunkt 9' des Koppelhebels 9 zum Anlenkpunkt 13' der Kolben-Zylinder-Einheit 13 veränderbar, indem der Anlenkpunkt 13' entlang des Koppelhebels 9 versetzt oder verschoben werden kann. Mit wachsender Hebellänge a und damit mit wachsendem Hebelübersetzungsverhältnis a/b wächst der Federweg t und damit im Hebelverhältnis e/b die Spritzdüsenverschiebung s bei einer bestimmtem Spritzdruckänderung. Somit kann die spritzdruckabhängige Spritzdüsenverschiebung s entsprechend den Eigenschaften unterschiedlicher Spritzdüsen 6 und Markierungslinienfarben angepasst werden.In order to achieve that the spray gun displacement s caused by a certain injection pressure change can be changed in relation to the injection pressure change because of the different influence of the displacement s on the various spray nozzles, the lever length a from the pivot point 9 'of the coupling lever 9 to the pivot point 13' is Piston-cylinder unit 13 changeable by the articulation point 13 'along the coupling lever 9 can be offset or moved. With increasing lever length a and thus with increasing leverage ratio a / b, the spring travel t and thus the lever ratio e / b increases the spray nozzle displacement s at a certain injection pressure change. Thus, the injection pressure-dependent spray nozzle displacement s can be adjusted according to the properties of different spray nozzles 6 and marking line colors.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

Zeichencharacter Bezeichnungdescription 11 Markierungsmaschinemarking machine 22 Farbpumpeink pump 33 Hydraulikmotorhydraulic motor 44 Welle zwischen 2 und 3Wave between 2 and 3 55 Spritzpistolespray gun 66 Spritzdüsenozzle 77 Hydraulikleitunghydraulic line 88th Halterung für 5Bracket for 5 99 erster Koppelhebelfirst coupling lever 9'9 ' Drehpunkt von 9Fulcrum of 9 1010 zweiter Koppelhebelsecond coupling lever 1111 Fahrzeugvehicle 1212 Träger an 11Carrier at 11 1313 Kolben-Zylinder-EinheitPiston-cylinder unit 13'13 ' Anlenkpunkt von 13 an 9Link point from 13 to 9 1414 zu markierende Oberflächesurface to be marked 14'14 ' Markierungsliniemarking line 15, 15'15, 15 ' Spritzfächerspray fan 1616 Farbleitungpaint line 1717 Federfeather 1818 Bewegungsrichtung von 1Movement direction of 1 AA Abstand zwischen 6 und 14Distance between 6 and 14 BB Breite der MarkierungslinieWidth of the marking line a, b, ea, b, e Hebelarmlängenlever arm ss SpritzdüsenverschiebungSpray nozzles shift tt Federweg von 17Travel of 17

Claims (19)

  1. Method for stabilizing the width (B) of a marking line (14') in marking machines (1) spraying a marking line color under spraying pressure by means of at least one spray nozzle (6) onto a surface (14) to be marked,
    characterized in that
    the position of the spray nozzle (6) in relation to the surface (14) to be marked is controlled with the help of the spray pressure or a pressure of another fluid depending on the spray pressure, stabilizing the marking line width (B) upon spray pressure changes.
  2. Method according to claim 1, characterized in that a distance (A) from the spray nozzle (6) to the surface (14) to be marked is controlled.
  3. Method according to claim 1 or 2, characterized in that a rotational position of the spray nozzle (6) is controlled around an essentially vertical axis relative to the surface (14) to be marked.
  4. Method according to claim 1, 2 or 3, characterized in that a rotational position of the spray nozzle (6) is controlled around an axis essentially extending horizontally and transversely to the longitudinal direction of the marking line (14') relative to the surface (14) to be marked.
  5. Method according to any one of the claims 1 to 4, characterized in that the spray pressure or the pressure of the other fluid depending on the spray pressure acts upon a piston-cylinder unit (13) changing the position of the spray nozzle (6) in relation to the surface (14) to be marked and counteracting a reset force.
  6. Method according to claim 5, characterized in that the reset force is varied - depending on the geometry of different spray nozzles (6) and/or on the properties of different marking line colors - and adjusted to desired values.
  7. Method according to claim 5 or 6, characterized in that the reset force is generated by at least one spring (17).
  8. Method according to any one of the claims 1 to 7, characterized in that the other fluid is a hydraulic fluid which serves as the drive fluid of a hydraulically driven pump (2) for conveying the marking line color.
  9. Method according to any one of the claims 1 to 4, characterized in that the spray pressure or the pressure of the other fluid depending on the spray pressure is detected by at least one pressure sensor and transmitted to an electric or electronic control unit and that the control unit adjusts, depending on the pressure, an electric or electronic adjusting device changing the position of the spray nozzle (6) in relation to the surface (14) to be marked.
  10. Marking machine (1) for creating marking lines (14') by spraying marking line color under spray pressure by means of at least one spray nozzle (6) onto a surface (14) to be marked,
    characterized in that
    the spray nozzle (6) or a spray gun (5) featuring same is attached to a holder (8) adjustable in its position in relation to the surface (14) to be marked - depending on the spray pressure or a pressure of another fluid depending on the spray pressure - stabilizing the marking line width (B) upon spray pressure changes.
  11. Marking machine according to claim 10, characterized in that the holder (8) is adjustable in its distance (A) to the surface (14) to be marked.
  12. Marking machine according to claim 10 or 11, characterized in that the holder (8) is adjustable around an essentially vertical axis relative to the surface (14) to be marked.
  13. Marking machine according to claim 10, 11 or 12, characterized in that the holder (8) is adjustable around an axis essentially extending horizontally and transversely to the longitudinal direction of the marking line (14') relative to the surface (14) to be marked.
  14. Marking machine according to any one of the claims 10 to 13, characterized in that a reset force is applied to the holder (8) acting in the direction of an enlargement of the width (B) of the marking line (14') and that the holder (8) is adjustable against the reset force by means of a piston-cylinder unit (13) to which the spray pressure or the pressure of another fluid depending on the spray pressure can be applied in direction of a reduction of the width (B) of the marking line (14').
  15. Marking machine according to claim 14, characterized in that the action of the force of the piston-cylinder unit (13) and/or the reset force is variable - depending on the geometry of different spray nozzles (6) and/or the properties of different marking line colors - and adjustable to desired values.
  16. Marking machine according to claim 14 or 15, characterized in that the reset force is generated by at least one spring (17).
  17. Marking machine according to claim 16, characterized in that the holder (8) comprises a coupling lever arrangement (9, 10) connected with the spring (17) and with the piston-cylinder unit (13) and that the spring (17) and/or the piston-cylinder unit (13) are/is variable in their/its connecting position to the coupling lever arrangement (9, 10).
  18. Marking machine according to any one of the claims 10 to 17, characterized in that it comprises at least one hydraulically drivable pump (2) for conveying the marking line color and that the other fluid is a hydraulic fluid serving as the drive fluid of a hydraulic motor (3) of the pump (2).
  19. Marking machine according to any one of the claims 10 to 13, characterized in that it comprises at least one pressure sensor detecting the spray pressure or the pressure of the other fluid depending on the spray pressure, said sensor being connected with an input of an electric or electronic control unit, and that the control unit is connected with an electric or electronic adjusting device which changes - depending on the pressure - the position of the holder (8) in relation to the surface (14) to be marked.
EP09176988A 2008-11-28 2009-11-25 Method for maintaining the constancy of marking line width and marking machine for applying the method Active EP2191903B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008059557A DE102008059557A1 (en) 2008-11-28 2008-11-28 Method for keeping constant the marking line width at a marking line color on a marking surface to be marked marking machines and marking machine for performing the method

Publications (2)

Publication Number Publication Date
EP2191903A1 EP2191903A1 (en) 2010-06-02
EP2191903B1 true EP2191903B1 (en) 2011-08-03

Family

ID=41668279

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Application Number Title Priority Date Filing Date
EP09176988A Active EP2191903B1 (en) 2008-11-28 2009-11-25 Method for maintaining the constancy of marking line width and marking machine for applying the method

Country Status (6)

Country Link
EP (1) EP2191903B1 (en)
AT (1) ATE518598T1 (en)
DE (1) DE102008059557A1 (en)
DK (1) DK2191903T3 (en)
ES (1) ES2369644T3 (en)
PT (1) PT2191903E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003069A1 (en) 2013-02-22 2014-08-28 Grün GmbH Spezialmaschinenfabrik Method for maintaining constant width of line of machine for renewing e.g. warning lines on e.g. road, involves differentiating pressure value and temperature of substance to determine correct value for vertical adjustment of spray head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3428342B1 (en) 2017-07-12 2020-09-30 Hofmann GmbH Maschinenfabrik und Vertrieb Method of maintaining a marking line to be applied by a road marking machine constant and road marking machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435213A1 (en) * 1984-09-26 1986-04-03 Walter Hofmann GmbH, 2084 Rellingen Arrangement for automatically keeping constant the thickness of the layer of marking lines or the like
DE3920774A1 (en) * 1989-06-24 1991-01-10 Ver Glaswerke Gmbh CASTING DEVICE FOR CASTING TRANSPARENT PLASTIC LAYERS WITH A COLORED FILTER TAPE
GB2260153A (en) * 1991-10-01 1993-04-07 Jan Josef Korab Line marking machine
DE4423304C1 (en) * 1994-07-02 1995-10-05 Hofmann Walter Maschf Method for airless spraying of road markings
DE19727622C1 (en) * 1997-06-28 1998-10-22 Hofmann Walter Maschf Road surface marking machine for providing road markings for road traffic
DE19750359A1 (en) * 1997-11-14 1999-06-02 Ralf Horst Vogelsang Controlling pre-set layer thickness of markings applied to road or footpath by vehicle
JP4512680B2 (en) * 2003-03-18 2010-07-28 兵神装備株式会社 Material supply system
DE10333121B4 (en) * 2003-07-21 2006-01-19 Kodak Polychrome Graphics Gmbh Apparatus and method for coating material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003069A1 (en) 2013-02-22 2014-08-28 Grün GmbH Spezialmaschinenfabrik Method for maintaining constant width of line of machine for renewing e.g. warning lines on e.g. road, involves differentiating pressure value and temperature of substance to determine correct value for vertical adjustment of spray head

Also Published As

Publication number Publication date
DK2191903T3 (en) 2011-10-31
PT2191903E (en) 2011-10-17
EP2191903A1 (en) 2010-06-02
ES2369644T3 (en) 2011-12-02
DE102008059557A1 (en) 2010-06-02
ATE518598T1 (en) 2011-08-15

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