EP1153666B1 - Method and machine for coating workpieces in series - Google Patents

Method and machine for coating workpieces in series Download PDF

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Publication number
EP1153666B1
EP1153666B1 EP01111333A EP01111333A EP1153666B1 EP 1153666 B1 EP1153666 B1 EP 1153666B1 EP 01111333 A EP01111333 A EP 01111333A EP 01111333 A EP01111333 A EP 01111333A EP 1153666 B1 EP1153666 B1 EP 1153666B1
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EP
European Patent Office
Prior art keywords
tool
air
atomising
coating machine
supply system
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP01111333A
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German (de)
French (fr)
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EP1153666A2 (en
EP1153666A3 (en
Inventor
Frank Rupertus
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Duerr Systems AG
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Duerr Systems AG
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Publication of EP1153666A3 publication Critical patent/EP1153666A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1092—Means for supplying shaping gas

Definitions

  • the invention relates to a method and a coating machine for serial coating of workpieces such as in particular Vehicle bodies using atomizing tools, which are typically rotary or air atomizers can, as they have long been known and customary.
  • a coating machine is known from EP 0 850 693 A1 interchangeable atomizing tools known in which it components of various rotary atomizers and electrostatic air atomizer for coating each other Areas in particular of vehicle bodies.
  • the Atomizing tools contain depending on the type of atomization different color tube constructions when changing tools connected to the bell plate or to the air cap stay and with this one of the tools common Valve unit can be removed.
  • the Tools with the valve unit through a detachable screw connection connected.
  • the invention has for its object a method or a Specify coating machine that with little effort Coating all areas of workpieces with the most suitable one Allow tool.
  • the tool used can also be used against other tools such as B. gripper or especially exchanged measuring devices become.
  • a particular advantage of the invention is that Change from high-speed to air atomization, for example Ink delivery system does not need to be rinsed as it is complete remains in the machine and the same after the tool change Color performs as before.
  • the remaining one in the machine Color supply systems belong, for example, to typical paint atomizers the media-carrying valve unit and the usual Paint tube with the paint valve. Color changes are also easy as before possible without additional effort.
  • the invention is suitable inter alia. for conventional atomizers with a permanently installed supply system, e.g. to the usual external ring lines is connected and with a paint tube opens into or on the atomizing tool (e.g. DE 43 06 800 C2).
  • the invention is also suitable for new types Atomizers, in which the paint tube on replaceable paint cartridges or valve units is attached (EP 0 967 016 A1, EP 0 967 018 A1) or from one located in or near the atomizer, fed as a storage cylinder becomes.
  • the painting machine shown is a Robot, on the hand 1 of which the atomizer 2 is attached.
  • Fig. 1 is the atomizer as an electrostatic high-speed rotary atomizer trained, the atomizer bell 4 in the usual Way on a hollow shaft driven by an air turbine 5 6 is attached and with the turbine and the hollow shaft Unit 7 forms.
  • the unit 7 forms the atomizing tool here of the atomizer 2.
  • a supply system 8 for the liquid or, for example powder coating material of any color and for detergents or solvents.
  • the supply system 8 consists in essentially from the paint tube opening into the atomizer bell 4 9, a valve unit 10 for controlling the ink and solvent flow through the color tube 9 and connecting lines to Connection of the atomizer 2 to paint and solvent sources 12.
  • Additional lines connect the atomizer 2 to that for the electrostatic Coating required high voltage generator 14, a source 16 for compressed air and / or other gaseous Media in particular for driving the air turbine 5 and for the atomizing air as well as with a pneumatic control system 18 to control the valves.
  • a bracket structure 20 attached to the robot hand 1 serves on the one hand to permanently hold the valve unit 10 and its color tube 9 (or to hold interchangeable cartridges and / or valve units or a metering storage container) and on the other hand for the automatically releasable mounting of the the atomizing tool unit 7.
  • the detachable fastening the assembly 7 on the bracket structure 20 can for example with the help of a z. B. firmly with the paint tube 9th and / or the turbine 5 and thus another part cover 22 forming unit 7.
  • the cover 22 surrounds the hollow shaft 6, the paint tube 9 as shown and the valve unit 10 and is at the attachment points 23 mechanically locked to the bracket structure 20, wherein the part of the structural unit 7 containing the turbine 5 has a positive fit and stable on the valve unit 10 and / or the support structure 20 can support.
  • the mechanical locking of the unit 7 at the attachment points 23 is characterized by internal, e.g. pneumatic control and / or by external, but also automatically controllable Tool means releasable, so that the unit 7 by machine the support structure 20 removed and from the coating machine can be removed.
  • Fig. 2 shows the part with the bracket structure 20 and the Supply system 8 including paint tube 9, which when removing of the unit 7 forming the coating tool from the machine remains in this.
  • FIG. 3 shows the same coating machine according to Fig. 1, in the but now instead of the unit 7 an air atomization tool 25 is used so that it is instead of the rotary atomizer 2 is now an air atomizer 2 '.
  • the atomizing tool 25 consists essentially of that in air atomizers known and conventional air cap 26, for example in one piece on one of the cover 22 described in FIG. 1 similar Cover 22 'can be attached.
  • the atomizing tool 25 mechanically in with the help of the cover 22 ' the manner described at 23 with the bracket structure 20 locked automatically releasable.
  • the air cap 26 is here through the cover 22 'and a support structure attached to it 28, e.g. on the two atomizer types common supply system 8 supports in the for air atomization required position at the mouth of the paint tube 9 fixed.
  • the atomizing air can expediently via a (not shown) Connection to the hose line leading to the source 16 are supplied so that the motor air of the high-speed atomizer 1 now used as atomizing air becomes.
  • the horn air common for air atomization those to more or less narrow the spray cone and to adapt the spray jet shape to the paint to be painted Workpiece is used by connecting to the hose line that the high-speed rotary atomizer the required there Steering air supplies. For automatic connection of the rotation or
  • Air atomizing tools to the sources of air, coating material and solvents are releasable line couplings intended.
  • the surfaces to be painted are first divided into two Areas or groups divided by rotary atomization or air atomization should be coated.
  • the outer surfaces of a body become electrostatic painted with the high-speed sputtering tool according to FIG. 1.
  • the high voltage is lowered and the robot moves in a position where automatically locking at the attachment points 23 solved and the unit 7 of the rotary atomizer 2 including cover 22 from the coating machine is taken out.
  • the unit 7 of the rotary atomizer 2 including cover 22 from the coating machine is taken out.
  • the unit 7 of the rotary atomizer 2 including cover 22 from the coating machine is taken out.
  • the unit 7 of the rotary atomizer 2 including cover 22 from the coating machine is taken out.
  • the unit 7 is now also automatically the air atomizing tool 25 according to Fig.
  • Robots are moved to a location on the coating system where he discards the previously used atomizing tool and instead grips tools to be used, such as a tool magazine extracts.
  • the coating sequence described could of course be also be the other way around. There is also the option of coating a workpiece with the atomizing tool a first type this against a coating tool another type and then another workpiece to coat.
  • one of the interchangeable atomizing tools can use an air atomizer in one works in a known manner with electrostatic support, for example with one that charges the rinsed material Electrode.
  • atomizing tool replace with a measuring device or a measuring head with which z.
  • a measuring device or a measuring head with which z.
  • parameters of coating quality such as Layer thickness, waviness, hue, color gloss, etc. measured can be. Based on the measurement result, you can immediately possible coating errors are corrected, even in the closed Control loop. Appropriate procedures for this are per se known (DE 197 17 593, DE 100 36 741).
  • Robot also another, preferably as a multi-axis automatic machine trained coating machine can be used.
  • the entire procedure can be conveniently stored Program can be controlled.

Landscapes

  • Spray Control Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Method involves using a coating machine in which the coating material passes from the mouth of a delivery system into a spray tool. A first area of workpiece is coated with a first spray tool, the tool is removed from the machine without the delivery system and replaced by a tool (25) with a different spray mode and another area of workpiece or another workpiece is coated using the second tool. Independent claims are also included for the following: a coating machine.

Description

Die Erfindung betrifft ein Verfahren und eine Beschichtungsmaschine zur Serienbeschichtung von Werkstücken wie insbesondere Fahrzeugkarossen unter Verwendung von Zerstäubungswerkzeugen, bei denen es sich typisch um Rotations- oder Luftzerstäuber handeln kann, wie sie an sich seit langem bekannt und üblich sind.The invention relates to a method and a coating machine for serial coating of workpieces such as in particular Vehicle bodies using atomizing tools, which are typically rotary or air atomizers can, as they have long been known and customary.

In einer bekannten Anlage zum Beschichten von LKW-Kabinen werden an Robotern montierte elektrostatisch arbeitende Hochrotationszerstäuber sowohl zur Außenlackierung als auch zur Innenlackierung verwendet. Für die Innenlackierung und für die Lackierung relativ schwierig zu beschichtender Details der Karosse ist es erforderlich, die Hochspannung abzusenken und die Lenkluftwerte des Rotationszerstäubers zu erhöhen. Ein Nachteil dieser Methode besteht darin, daß mit dem Sprühstrahl von Hochrotationszerstäubern einige Bereiche bei der Innen- und Detaillackierung nur unzulänglich erreicht werden.In a known system for coating truck cabins electrostatically working high-speed rotary atomizers mounted on robots both for exterior painting and for interior painting used. For interior painting and painting it is relatively difficult to coat details of the body required to lower the high voltage and the steering air values of the rotary atomizer. A disadvantage of this method is that with the spray of high-speed atomizers some areas in the interior and detail painting are inadequate can be achieved.

Es ist bereits bekannt, an der Hand eines Lackierroboters den Zerstäuber losbar so zu befestigen, daß er gegen einen Zerstäuber eines anderen Typs ausgewechselt werden kann, wenn ein andersartiges Objekt beschichtet werden soll. Das Auswechseln des gesamten Zerstäubers ist aber nicht immer zweckmäßig.It is already known to use the hand of a painting robot Detachable atomizer so that it can be attached to an atomizer of a different type can be replaced if a different one Object to be coated. The replacement of the entire atomizer is not always appropriate.

Während sich für die elektrostatische Beschichtung von großflächigen Außenbereichen beispielsweise einer Karosse am besten die Hochrotationszerstäubung eignet, sind für andere Bereiche Luftzerstäuber u.a. wegen des schärfer steuerbaren Sprühstrahls besser geeignet. Luftzerstäubende Systeme sind in der Lackiertechnik an sich seit vielen Jahren bekannt und üblich (Dürr/Behr Technisches Handbuch "Einführung in die Technik der PKW-Lackierung" 04/1999).While for the electrostatic coating of large areas Outside areas of a body, for example, the best High-speed atomization is suitable for other areas et al because of the sharper controllable spray jet more suitable. Air atomizing systems are used in painting technology known and common for many years (Dürr / Behr Technical Handbook "Introduction to the technology of Car paintwork "04/1999).

Aus der EP 0 850 693 A1 ist eine Beschichtungsmaschine mit auswechselbaren Zerstäubungswerkzeugen bekannt, bei denen es sich um Bestandteile verschiedener Rotationszerstäuber und elektrostatischer Luftzerstäuber zur Beschichtung jeweils anderer Bereiche insbesondere von Fahrzeugkarossen handelt. Die Zerstäubungswerkzeuge enthalten je nach Art der Zerstäubung unterschiedliche Farbrohrkonstruktionen, die beim Werkzeugwechsel mit dem Glockenteller bzw. mit der Luftkappe verbunden bleiben und mit diesen von einer den Werkzeugen gemeinsamen Ventileinheit abmontiert werden. Zu diesem Zweck sind die Werkzeuge mit der Ventileinheit durch eine lösbare Verschraubung verbunden. A coating machine is known from EP 0 850 693 A1 interchangeable atomizing tools known in which it components of various rotary atomizers and electrostatic air atomizer for coating each other Areas in particular of vehicle bodies. The Atomizing tools contain depending on the type of atomization different color tube constructions when changing tools connected to the bell plate or to the air cap stay and with this one of the tools common Valve unit can be removed. For this purpose, the Tools with the valve unit through a detachable screw connection connected.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren bzw. eine Beschichtungsmaschine anzugeben, die mit wenig Aufwand das Beschichten aller Bereiche von Werkstücken mit dem jeweils bestgeeigneten Werkzeug ermöglichen.The invention has for its object a method or a Specify coating machine that with little effort Coating all areas of workpieces with the most suitable one Allow tool.

Diese Aufgabe wird durch die Merkmale der Patentansprüche gelöst.This object is solved by the features of the claims.

Insbesondere ist es erfindungsgemäß möglich, mit ein und derselben Beschichtungsmaschine einen Teil eines Werkstücks mit Hochrotationszerstäubung und restliche Bereiche desselben Werkstücks mit Luftzerstäubung zu beschichten, ohne daß zu diesem Zweck Zerstäuber mit einem wesentlichen Teil ihres Farbzuleitungssystems gewechselt werden müssen.In particular, it is possible according to the invention with one and the same Coating machine part of a workpiece with high-speed atomization and remaining areas of the same workpiece to be coated with air atomization without using for this purpose Atomizers with an essential part of their paint supply system need to be changed.

Ebenso einfach wie gegen ein Zerstäubungswerkzeug anderen Typs kann das jeweils verwendete Werkzeug auch gegen sonstige Werkzeuge wie z. B. Greifer oder insbesondere auch Meßgeräte ausgewechselt werden.As simple as against a different type of atomizing tool the tool used can also be used against other tools such as B. gripper or especially exchanged measuring devices become.

Ein besonderer Vorteil der Erfindung besteht darin, daß bei dem Wechsel beispielsweise von Hochrotations- zu Luftzerstäubung das Farbzuleitungssystem nicht gespült werden muß, da es vollständig in der Maschine verbleibt und nach dem Werkzeugwechsel dieselbe Farbe führt wie vorher. Zu dem in der Maschine verbleibenden Farbzuleitungssystem gehören beispielsweise bei typischen Lackzerstäubern die medienführende Ventileinheit und das übliche Farbrohr mit dem Farbventil. Auch Farbwechsel sind problemlos wie bisher ohne zusätzlichen Aufwand möglich. A particular advantage of the invention is that Change from high-speed to air atomization, for example Ink delivery system does not need to be rinsed as it is complete remains in the machine and the same after the tool change Color performs as before. The remaining one in the machine Color supply systems belong, for example, to typical paint atomizers the media-carrying valve unit and the usual Paint tube with the paint valve. Color changes are also easy as before possible without additional effort.

Die Erfindung eignet sich u.a. für konventionelle Zerstäuber mit einem fest eingebauten Zuleitungssystem, das z.B. an die üblichen externen Ringleitungen angeschlossen ist und mit einem Farbrohr in oder an dem Zerstäubungswerkzeug mündet (z.B. DE 43 06 800 C2). Die Erfindung eignet sich aber auch für neuartige Zerstäuber, bei denen das Farbrohr an auswechselbaren Farbkartuschen oder Ventileinheiten angebracht ist (EP 0 967 016 A1, EP 0 967 018 A1) oder von einem in oder bei dem Zerstäuber befindlichen, als Dosierzylinder ausgebildeten Vorratsbehälter gespeist wird.The invention is suitable inter alia. for conventional atomizers with a permanently installed supply system, e.g. to the usual external ring lines is connected and with a paint tube opens into or on the atomizing tool (e.g. DE 43 06 800 C2). The invention is also suitable for new types Atomizers, in which the paint tube on replaceable paint cartridges or valve units is attached (EP 0 967 016 A1, EP 0 967 018 A1) or from one located in or near the atomizer, fed as a storage cylinder becomes.

An einem in der Zeichnung schematisch stark vereinfacht dargestellten Ausführungsbeispiel wird die Erfindung näher erläutert.
Es zeigen:

Fig. 1
eine Lackiermaschine mit einem Rotationszerstäuber;
Fig. 2
einen Teil der Lackiermaschine nach Fig. 1, an dem das Zerstäubungswerkzeug lösbar befestigt wird; und
Fig. 3
die Lackiermaschine nach Fig. 1, in der jedoch die die Zerstäuberglocke enthaltende Baueinheit gegen ein Luftzerstäubungswerkzeug ausgewechselt ist.
The invention is explained in more detail using an exemplary embodiment shown schematically in a highly simplified manner in the drawing.
Show it:
Fig. 1
a painting machine with a rotary atomizer;
Fig. 2
part of the painting machine of Figure 1, on which the atomizing tool is releasably attached. and
Fig. 3
the painting machine of FIG. 1, in which, however, the assembly containing the atomizer bell is replaced by an air atomizing tool.

Bei der dargestellten Lackiermaschine handelt es sich um einen Roboter, an dessen Hand 1 der Zerstäuber 2 befestigt ist. In Fig. 1 ist der Zerstäuber als elektrostatischer Hochrotationszerstäuber ausgebildet, dessen Zerstäuberglocke 4 in der üblichen Weise an einer von einer Luftturbine 5 angetriebenen Hohlwelle 6 befestigt ist und mit der Turbine und der Hohlwelle eine Baueinheit 7 bildet. Die Baueinheit 7 bildet hier das Zerstäubungswerkzeug des Zerstäubers 2. Ferner gehört zu dem Zerstäuber 2 ein Zuleitungssystem 8 für das beispielsweise flüssiges oder pulverförmiges Beschichtungsmaterial beliebig wählbarer Farbe und für Spül- oder Lösemittel. Das Zuleitungssystem 8 besteht im wesentlichen aus dem in der Zerstäuberglocke 4 mündenden Farbrohr 9, einer Ventileinheit 10 zur Steuerung des Farb- und Lösemittelflusses durch das Farbrohr 9 und Anschlußleitungen zur Verbindung des Zerstäubers 2 mit Farb- und Lösemittelquellen 12. Weitere Leitungen verbinden den Zerstäuber 2 mit dem für die elektrostatische Beschichtung erforderlichen Hochspannungsgenerator 14, einer Quelle 16 für Druckluft und/oder sonstige gasförmige Medien insbesondere zum Antrieb der Luftturbine 5 und für die Lenkluft des Zerstäubers sowie mit einem Pneumatikansteuerungssystem 18 zum Steuern der Ventile.The painting machine shown is a Robot, on the hand 1 of which the atomizer 2 is attached. In Fig. 1 is the atomizer as an electrostatic high-speed rotary atomizer trained, the atomizer bell 4 in the usual Way on a hollow shaft driven by an air turbine 5 6 is attached and with the turbine and the hollow shaft Unit 7 forms. The unit 7 forms the atomizing tool here of the atomizer 2. Also belongs to the atomizer 2 a supply system 8 for the liquid or, for example powder coating material of any color and for detergents or solvents. The supply system 8 consists in essentially from the paint tube opening into the atomizer bell 4 9, a valve unit 10 for controlling the ink and solvent flow through the color tube 9 and connecting lines to Connection of the atomizer 2 to paint and solvent sources 12. Additional lines connect the atomizer 2 to that for the electrostatic Coating required high voltage generator 14, a source 16 for compressed air and / or other gaseous Media in particular for driving the air turbine 5 and for the atomizing air as well as with a pneumatic control system 18 to control the valves.

Eine an der Roboterhand 1 befestigte Halterungskonstruktion 20 dient einerseits zur permanenten Halterung der Ventileinheit 10 und ihres Farbrohrs 9 (oder zur Halterung auswechselbarer Kartuschen und/oder Ventileinheiten oder eines dosierenden Vorratsbehälters) und andererseits zur automatisch lösbaren Halterung der das Zerstäubungswerkzeug bildenden Baueinheit 7. Die lösbare Befestigung der Baueinheit 7 an der Halterungskonstruktion 20 kann beispielsweise mit Hilfe einer z. B. fest mit dem Farbrohr 9 und/oder der Turbine 5 verbundenen und somit einen weiteren Teil der Baueinheit 7 bildenden Abdeckung 22 erfolgen. Die Abdeckung 22 umschließt darstellungsgemäß die Hohlwelle 6, das Farbrohr 9 und die Ventileinheit 10 und ist an den Befestigungsstellen 23 mechanisch mit der Halterungskonstruktion 20 verriegelt, wobei sich der die Turbine 5 enthaltende Teil der Baueinheit 7 formschlüssig und stabil auf der Ventileinheit 10 und/oder der Halterungskonstruktion 20 abstützen kann.A bracket structure 20 attached to the robot hand 1 serves on the one hand to permanently hold the valve unit 10 and its color tube 9 (or to hold interchangeable cartridges and / or valve units or a metering storage container) and on the other hand for the automatically releasable mounting of the the atomizing tool unit 7. The detachable fastening the assembly 7 on the bracket structure 20 can for example with the help of a z. B. firmly with the paint tube 9th and / or the turbine 5 and thus another part cover 22 forming unit 7. The cover 22 surrounds the hollow shaft 6, the paint tube 9 as shown and the valve unit 10 and is at the attachment points 23 mechanically locked to the bracket structure 20, wherein the part of the structural unit 7 containing the turbine 5 has a positive fit and stable on the valve unit 10 and / or the support structure 20 can support.

Die mechanische Verriegelung der Baueinheit 7 an den Befestigungsstellen 23 ist durch innere, z.B. pneumatische Steuerung und/oder durch äußere, aber ebenfalls automatisch steuerbare Werkzeugmittel lösbar, so daß die Baueinheit 7 maschinell von der Halterungskonstruktion 20 abgenommen und von der Beschichtungsmaschine entfernt werden kann.The mechanical locking of the unit 7 at the attachment points 23 is characterized by internal, e.g. pneumatic control and / or by external, but also automatically controllable Tool means releasable, so that the unit 7 by machine the support structure 20 removed and from the coating machine can be removed.

Fig. 2 zeigt den Teil mit der Halterungskonstruktion 20 und dem Zuleitungssystem 8 einschließlich Farbrohr 9, der beim Entfernen der das Beschichtungswerkzeug bildenden Baueinheit 7 von der Maschine in dieser zurückbleibt.Fig. 2 shows the part with the bracket structure 20 and the Supply system 8 including paint tube 9, which when removing of the unit 7 forming the coating tool from the machine remains in this.

Fig. 3 zeigt dieselbe Beschichtungsmaschine gemäß Fig. 1, in die nun aber anstelle der Baueinheit 7 ein Luftzerstäubungswerkzeug 25 eingesetzt ist, so daß es sich statt des Rototationszerstäubers 2 nun um einen Luftzerstäuber 2' handelt. Das Zerstäubungswerkzeug 25 besteht im wesentlichen aus der bei Luftzerstäubern bekannten und üblichen Luftkappe 26, die beispielsweise einstückig an einer der beschriebenen Abdeckung 22 gemäß Fig. 1 ähnlichen Abdeckung 22' angebracht sein kann. Auch hier ist das Zerstäubungswerkzeug 25 mit Hilfe der Abdeckung 22' mechanisch in der beschriebenen Weise bei 23 mit der Halterungskonstruktion 20 automatisch lösbar verriegelt. Die Luftkappe 26 ist hierbei durch die Abdeckung 22' und eine an ihr befestigte Stützkonstruktion 28, die sich z.B. an dem den beiden Zerstäubertypen gemeinsamen Zuleitungssystem 8 abstützt, in der für die Luftzerstäubung erforderlichen Position an der Mündung des Farbrohrs 9 fixiert.Fig. 3 shows the same coating machine according to Fig. 1, in the but now instead of the unit 7 an air atomization tool 25 is used so that it is instead of the rotary atomizer 2 is now an air atomizer 2 '. The atomizing tool 25 consists essentially of that in air atomizers known and conventional air cap 26, for example in one piece on one of the cover 22 described in FIG. 1 similar Cover 22 'can be attached. Here too is the atomizing tool 25 mechanically in with the help of the cover 22 ' the manner described at 23 with the bracket structure 20 locked automatically releasable. The air cap 26 is here through the cover 22 'and a support structure attached to it 28, e.g. on the two atomizer types common supply system 8 supports in the for air atomization required position at the mouth of the paint tube 9 fixed.

Die Zerstäubungsluft kann zweckmäßig über einen (nicht dargestellten) Anschluß an die zu der Quelle 16 führende Schlauchleitung zugeführt werden, so daß die Motorluft des Hochrotationszerstäubers gemäß Fig. 1 nun als Zerstäubungsluft verwendet wird. Ähnlich kann die für die Luftzerstäubung übliche Hörnerluft, die zur mehr oder weniger starken Eingrenzung des Sprühkegels und zur Anpassung der Sprühstrahlform an das zu lackierende Werkstück dient, durch Anschluß an die Schlauchleitung zugeführt werden, die dem Hochrotationszerstäuber die dort erforderliche Lenkluft liefert. Zum selbsttätigen Anschluß der Rotations- bzw. The atomizing air can expediently via a (not shown) Connection to the hose line leading to the source 16 are supplied so that the motor air of the high-speed atomizer 1 now used as atomizing air becomes. Similarly, the horn air common for air atomization, those to more or less narrow the spray cone and to adapt the spray jet shape to the paint to be painted Workpiece is used by connecting to the hose line that the high-speed rotary atomizer the required there Steering air supplies. For automatic connection of the rotation or

Luftzerstäubungswerkzeuge an die Quellen für Luft, Beschichtungsmaterial und Lösemittel sind lösbare Leitungskupplungen vorgesehen.Air atomizing tools to the sources of air, coating material and solvents are releasable line couplings intended.

Im Betrieb werden zunächst die zu lackierenden Flächen in zwei Bereiche oder Gruppen aufgeteilt, die durch Rotationszerstäubung bzw. Luftzerstäubung beschichtet werden sollen. Beispielsweise werden zunächst die Außenflächen einer Karosse elektrostatisch mit dem Hochrotationszerstäubungswerkzeug gemäß Fig. 1 lackiert. Danach wird die Hochspannung abgesenkt, und der Roboter fahrt in eine Position, wo automatisch die Verriegelung an den Befestigungsstellen 23 gelöst und die Baueinheit 7 des Rotationszerstäubers 2 einschließlich der Abdeckung 22 aus der Beschichtungsmaschine herausgenommen wird. Wie schon erwähnt wurde, bleibt hierbei das in Fig. 2 dargestellte Zuleitungssystem in der Beschichtungsmaschine zurück. Anstelle der Baueinheit 7 wird nun ebenfalls automatisch das Luftzerstäubungswerkzeug 25 gemäß Fig. 3 in die Maschine eingesetzt und mit der Abdeckung 22' mechanisch mit der Halterungskonstruktion 20 verriegelt, wobei die erwähnten Leitungsverbindungen mit den Farb-, Lösemittel- und Luftquellen 12, 16, 18 ebenfalls selbsttätig an das Luftzerstäubungswerkzeug 25 angekuppelt werden. Eventuell kann der Werkzeugwechsel auch manuell durchgeführt werden. Anschließend werden die Innenraum- und Detailbereiche derselben Karosse mit dem Luftzerstäuber 2' beschichtet.In operation, the surfaces to be painted are first divided into two Areas or groups divided by rotary atomization or air atomization should be coated. For example the outer surfaces of a body become electrostatic painted with the high-speed sputtering tool according to FIG. 1. Then the high voltage is lowered and the robot moves in a position where automatically locking at the attachment points 23 solved and the unit 7 of the rotary atomizer 2 including cover 22 from the coating machine is taken out. As already mentioned, here remains the feed line system shown in FIG the coating machine back. Instead of the unit 7 is now also automatically the air atomizing tool 25 according to Fig. 3 used in the machine and mechanically with the cover 22 ' locked to the bracket structure 20, the mentioned line connections with the paint, solvent and Air sources 12, 16, 18 also automatically to the air atomizing tool 25 can be coupled. Possibly the tool change can also be done manually. Then be the interior and detail areas of the same body with the Air atomizer 2 'coated.

Für den automatischen Zerstäuberwechsel kann beispielsweise der Roboter an eine Stelle der Beschichtungsanlage bewegt werden, wo er das zuvor benutzte Zerstäubungswerkzeug ablegt und das stattdessen zu verwendende Werkzeug ergreift, etwa einem Werkzeugmagazin entnimmt.For the automatic atomizer change, for example Robots are moved to a location on the coating system where he discards the previously used atomizing tool and instead grips tools to be used, such as a tool magazine extracts.

Die beschriebene Beschichtungsreihenfolge könnte selbstverständlich auch umgekehrt sein. Ferner besteht die Möglichkeit, nach der Beschichtung eines Werkstücks mit dem Zerstäubungswerkzeug eines ersten Typs dieses gegen ein Beschichtungswerkzeug eines anderen Typs auszuwechseln und damit dann ein anderes Werkstück zu beschichten.The coating sequence described could of course be also be the other way around. There is also the option of coating a workpiece with the atomizing tool a first type this against a coating tool another type and then another workpiece to coat.

Es ist auch möglich, für eines der auswechselbaren Zerstäubungswerkzeuge einen Luftzerstäuber zu verwenden, der in einer an sich bekannten Weise mit elektrostatischer Unterstützung arbeitet, beispielsweise mit einer das abgespülte Material aufladenden Elektrode.It is also possible for one of the interchangeable atomizing tools to use an air atomizer in one works in a known manner with electrostatic support, for example with one that charges the rinsed material Electrode.

Eine andere Möglichkeit besteht darin, das Zerstäubungswerkzeug gegen ein Meßgerät oder einen Meßkopf auszuwechseln, mit dem z. B. unmittelbar nach der Beschichtung einer Fläche des Werkstücks ein oder mehrere Parameter der Beschichtungsqualität wie Schichtdicke, Welligkeitsverlauf, Farbton, Farbglanz usw. gemessen werden können. Aufgrund des Meßergebnisses können sofort eventuelle Beschichtungsfehler korrigiert werden, auch im geschlossenen Regelkreis. Hierfür geeignete Verfahren sind an sich bekannt (DE 197 17 593, DE 100 36 741).Another option is the atomizing tool replace with a measuring device or a measuring head with which z. B. immediately after coating a surface of the workpiece one or more parameters of coating quality such as Layer thickness, waviness, hue, color gloss, etc. measured can be. Based on the measurement result, you can immediately possible coating errors are corrected, even in the closed Control loop. Appropriate procedures for this are per se known (DE 197 17 593, DE 100 36 741).

Zur Durchführung des beschriebenen Verfahrens kann statt eines Roboters auch eine andere, vorzugsweise als mehrachsiger Bewegungsautomat ausgebildete Beschichtungsmaschine verwendet werden. Der gesamte Verfahrensablauf kann zweckmäßig durch ein gespeichertes Programm gesteuert werden.Instead of one, the method described can be carried out Robot also another, preferably as a multi-axis automatic machine trained coating machine can be used. The entire procedure can be conveniently stored Program can be controlled.

Claims (17)

  1. A method of serially coating workpieces, particularly such as vehicle bodies, with a coating machine, in which the coating material discharges from the opening of a supply system (8) into an atomising tool (7, 25) and is atomised by the tool, the supply system (8) including a paint tube structure (9) leading from a valve unit (10) into the atomising tool (7, 25) and wherein
    a first region of the workpiece is coated using a first atomising tool (7);
    this tool (7) is then removed from the coating machine without the supply system (8) and its paint tube structure (9) and replaced by a second atomising tool (25), which differs from the first tool (7) by the method of atomisation;
    and another region of the same workpiece or a different workpiece is then coated using the second tool (25).
  2. A method as claimed in Claim 1, characterised in that the one tool (7) is or includes a rotary atomiser bell (4) and the other tool (25) operates by air atomisation.
  3. A method as claimed in Claim 2, characterised in that when changing the tools, the atomiser bell (4) together with its drive motor (5) is removed from the coating machine or inserted into the machine.
  4. A method as claimed in Claim 3, characterised in that the atomiser bell (4) is removed or inserted together with a cover (22) surrounding at least the opening region of the supply system (8) and the drive motor (5).
  5. A method as claimed in one of Claims 2 to 4, characterised in that when changing the tools, an air cap (26) performing the air atomisation is removed from the coating machine or is inserted into the machine together with a cover (22'), which is connected to it and surrounds at least the opening region of the supply system (8).
  6. A method as claimed in one of Claims 2 to 5, characterised in that the outer surfaces of a vehicle body to be coated are coated electrostatically by high speed rotary atomisation by a robot or other multiple axis movement machine and that the same robot or movement machine coats surfaces of the interior and/or particular detail regions of the body with the air atomisation tool (25).
  7. A method as claimed in one of the preceding claims, characterised in that a tool operating with electrostatically assisted air atomisation is used as one of the atomisation tools.
  8. A method as claimed in one of the preceding claims, characterised in that the atomisation tool is replaced by a tool acting as a measurement device.
  9. A method as claimed in Claim 8, characterised in that one or more coating quality parameters of the previously coated workpiece surface is measured with the measurement device.
  10. A method as claimed in one of the preceding claims, characterised in that the tool is automatically changed.
  11. A coating machine for serially coating workpieces, particularly such as vehicle bodies, with an atomising tool (7, 25), into or onto which a supply system (8) for the coating material discharges, which includes a paint tube structure (9) constituting the discharge of the supply system and leading from a valve unit (10) into the atomising tool (7, 25),
    the first atomising tool constituting a separate unit from the supply system,
    and including a mounting for the atomising tool (7, 25) fastened to the coating machine, whereby atomising tools (7, 25) constructed differently as regards the method of atomisation are connectable to the mounting (20) and the supply system (8) so as to be replaceable with one another, characterised in that the atomising tool (7, 25) together with the mounting (20) is connected or connectable and automatically releasable from the discharge of the supply system (8) by an automatically releasable lock (23).
  12. A coating machine as claimed in Claim 11, characterised in that a unit (7) with a rotary atomiser bell (4) and an air atomising tool (25) with an air cap (26) may be selectively and interchangeably mounted on the mounting (20).
  13. A coating machine as claimed in Claim 12, characterised in that the rotary atomiser bell (4) and its drive motor (5) constitute the unit (7), which is removable from the coating machine.
  14. A coating machine as claimed in Claim 12 or 13, characterised in that the rotary atomiser bell (4) and/or the air cap (26) are connected to a respective cover casing (22, 22') and are removable with it from the coating machine.
  15. A coating machine as claimed in Claim 14, characterised in that the rotary atomiser bell and/or the air cap (26) may be fastened to the coating machine with the aid of its cover casing (22, 22').
  16. A coating machine as claimed in one of Claims 12 to 15, characterised in that the drive motor of the atomiser bell (4) is an air turbine (5), that the motor and/or control air lines provided for the high speed rotary atomisation supply atomising and/or tip air, when an air atomising tool is used, and that conduit couplings are provided for automatically connecting the replaceable atomising tool (7, 25) to air and coating material sources (16, 22) of the supply system (8).
  17. A coating machine as claimed in one of Claims 11 to 16, characterised in that the mounting (20) is fastened to the hand (1) of a painting robot.
EP01111333A 2000-05-10 2001-05-09 Method and machine for coating workpieces in series Expired - Lifetime EP1153666B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10022854A DE10022854A1 (en) 2000-05-10 2000-05-10 Process and coating machine for serial coating of workpieces
DE10022854 2000-05-10

Publications (3)

Publication Number Publication Date
EP1153666A2 EP1153666A2 (en) 2001-11-14
EP1153666A3 EP1153666A3 (en) 2003-01-02
EP1153666B1 true EP1153666B1 (en) 2004-07-28

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Application Number Title Priority Date Filing Date
EP01111333A Expired - Lifetime EP1153666B1 (en) 2000-05-10 2001-05-09 Method and machine for coating workpieces in series

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EP (1) EP1153666B1 (en)
AT (1) ATE271926T1 (en)
DE (2) DE10022854A1 (en)
ES (1) ES2223680T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108010A1 (en) 2001-02-20 2002-08-29 Duerr Systems Gmbh Spray device with at least one separation point
DE102007012878B3 (en) * 2007-03-17 2008-10-30 Apson Lackiertechnik Gmbh Sprayer e.g. electrostatic rotation sprayer, for spraying e.g. dye, has air nozzles formed inside central opening of sprayer cap for compressed air atomization, and channel supplying coating agent to sprayer head
EP3081314A1 (en) * 2015-04-16 2016-10-19 Eftec Europe Holding AG Device for applying fluids
CN109562397A (en) * 2016-07-28 2019-04-02 株式会社日立系统 Rotary atomization head, rotary atomization head management system and rotary atomization head management method
DE102016121637A1 (en) * 2016-11-11 2018-05-17 Eisenmann Se Applicator for an application robot and application system

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Publication number Priority date Publication date Assignee Title
FR2448392A1 (en) * 1979-02-12 1980-09-05 Vilbiss Toussaint De AUTOMATIC DEVICE FOR PROJECTING COATING PRODUCTS
JPH0195269U (en) * 1987-12-18 1989-06-23
DE4306800C2 (en) 1993-03-04 1998-07-02 Duerr Gmbh & Co Coating device with a rotary atomizer
WO1998003268A1 (en) * 1996-07-18 1998-01-29 Abb Industry K.K. Paint spraying device
DE19717593A1 (en) 1997-04-25 1998-10-29 Duerr Systems Gmbh Measuring system for assessing the surface quality
DE69827476T2 (en) 1998-01-13 2005-10-27 Abb K.K. COATING DEVICE WITH A TURNING SPRAY HEAD
KR100320344B1 (en) 1998-01-13 2002-01-16 라붸 린도베르 Rotary atomizing head type coating device
JP2001205143A (en) * 2000-01-26 2001-07-31 Ransburg Ind Kk Electrostatic coating machine used as two type and method
DE10036741A1 (en) 2000-07-27 2002-02-07 Duerr Systems Gmbh Process and control system for checking the coating quality of workpieces

Also Published As

Publication number Publication date
ES2223680T3 (en) 2005-03-01
DE10022854A1 (en) 2001-11-15
EP1153666A2 (en) 2001-11-14
DE50102960D1 (en) 2004-09-02
EP1153666A3 (en) 2003-01-02
ATE271926T1 (en) 2004-08-15

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