EP1279440B1 - Dosing system for coating device - Google Patents

Dosing system for coating device Download PDF

Info

Publication number
EP1279440B1
EP1279440B1 EP02015531A EP02015531A EP1279440B1 EP 1279440 B1 EP1279440 B1 EP 1279440B1 EP 02015531 A EP02015531 A EP 02015531A EP 02015531 A EP02015531 A EP 02015531A EP 1279440 B1 EP1279440 B1 EP 1279440B1
Authority
EP
European Patent Office
Prior art keywords
piston
container
drive means
metering system
zone
Prior art date
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.)
Expired - Lifetime
Application number
EP02015531A
Other languages
German (de)
French (fr)
Other versions
EP1279440A2 (en
EP1279440A3 (en
Inventor
Hans Dr. Schumacher
Marcus Frey
Michael Baumann
Jürgen Haas
Frank Herre
Hans-Jürgen Dr. Nolte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP1279440A2 publication Critical patent/EP1279440A2/en
Publication of EP1279440A3 publication Critical patent/EP1279440A3/en
Application granted granted Critical
Publication of EP1279440B1 publication Critical patent/EP1279440B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1675—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive the supply means comprising a piston, e.g. a piston pump
    • 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
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/047—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1691—Apparatus to be carried on or by a person or with a container fixed to the discharge device

Definitions

  • the invention relates to a metering system for a coating device according to the preamble of the independent claims 1 and 3.
  • Out US 5,292,036 is a serving for ink supply of an atomizer dosing known, the piston is pressurized to empty the cylinder on its back by compressed air. To control the outflow rate attacks on the piston also on its back further via a spindle gear on an electric stepper motor, which is either the same effect driving the piston with the air pressure or acting as a control brake.
  • the dosing cylinder is located at the end of a robot arm.
  • EP 1 134 027 A1 (Prior art according to Article 54 (3) EPC) a potential separation system with an electrostatic atomizer, which is measured from a metal tube or a flexible hose supply line for receiving the required color volume and sufficient for the electrical isolation between a color changer and the atomizer length ,
  • EPC electrostatic atomizer
  • a displaceable like a pig pistons which is pushed to promote the color towards the atomizer.
  • a pulling device On the side facing away from the color volume of the piston engages a pulling device with a motor via a cable. Air located behind the piston can serve both for electrical insulation and for driving the piston.
  • the object of the invention is to provide a simple, compact to be built dosing of the type considered, which works with high dosing accuracy and setpoint changes with the highest possible dynamics.
  • the first drive device preferably a pneumatic or mechanical pressure device, acts only as a pretensioning device for the piston drive.
  • the actual dosage is carried out by the tension element, which exerts only a force opposite to the biasing force on the piston and its caused by this form allows movement in exactly the desired extent. Since all mechanical transmission elements between the piston and the outflow of the coating material determining mechanical second drive means are under constant tensile load, eliminating the tolerances of the known electromechanical piston actuators, so that there is a much more accurate metering. At the same time, the system follows directly due to the form directly, slip-free and fast also sudden set point changes.
  • the metering system described here is particularly advantageous for installation in atomizers and spatially limited areas of coating machines.
  • the dosing system shown contains a cylinder-like container 1, in which a piston 2 is slidably mounted along the cylinder axis.
  • the piston 2 divides the container interior into a first region 4 for the drive energy of the system on the upper side in the drawing and a second region 3 in which the coating material to be metered such.
  • B. color lacquer is located.
  • Compressed air can be used as the drive medium, which pressurizes the first container region 4 coming from a source 5 through an air inlet 10 in the illustrated example, thereby pressurizing the piston 2 in the direction of the second container region 3 and thus biasing the system in this force direction.
  • a pressure medium can be provided in particular with a spring for generating the drive or biasing force for the piston but also a mechanical pressure or traction device.
  • the piston 2 is prevented from acting on the side of the first region 4 on the piston flexible traction element 6, which is a tensile and not longitudinally elastic or stretchable wire, ribbon - or chain link od. Like. Can be made of metal or plastic.
  • the tension element 6 is through a Opening 11 led out of the container 1 and can be deflected outside the container via rollers 12, 12 'in an expedient direction, for example, parallel to the direction of movement of the piston 2.
  • the tension element 6 has the function of yielding the piston pressure for controlling the piston movement in accordance with the desired outflow quantity, and for this purpose is connected to a program-controlled electromechanical drive unit 7 at its end facing away from the piston 2.
  • the flexible tension member 6 is fixed to the threaded wheel 13 of a spindle 14, which is driven by a servo motor or other program-controlled electric motor 15.
  • the motor 15 is reversible, so that when pulling back the piston 2 in the direction of the first region 4 after completion of a coating operation, the tension element 6 can be pulled out again from the container 1 to the appropriate extent.
  • the container portion 4 If the container portion 4 is to be pressurized, it must be sealed against the environment of the container.
  • the tension element 6 is for this purpose by a longitudinal the direction of movement of the piston 2 movable, for example, bellows-type envelope 17 enclosed, which is secured against the pressurizable container portion 4 sealingly at its one end to the piston 2 and at its other end to the discharge opening 11 surrounding wall of the container 1.
  • the container area 3 containing the coating material has a material outlet opening 19, to which a line leading to the atomizing device 20 of the atomizer, into which the container 1 and preferably also the other components of the metering system including the drive unit 7 can be advantageously installed, is connected.
  • the atomizing member 20 may be, for example, the bell cup of an electrostatic rotary atomizer or the nozzle of an air atomizer or the like.

Landscapes

  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Spray Control Apparatus (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Threshing Machine Elements (AREA)

Abstract

The dosing system has a container (1) for the coating material, containing a sliding piston (2), biased in the coating material ejection direction via a Pressurized air source (5), its movement controlled by an electromechanical drive (7) with an electric motor (15) and a drive spindle (14), coupled to the piston via a flexible tension element (6).

Description

Die Erfindung betrifft ein Dosiersystem für eine Beschichtungsvorrichtung gemäß dem Oberbegriff der unabhängigen Patentansprüche 1 und 3.The invention relates to a metering system for a coating device according to the preamble of the independent claims 1 and 3.

Insbesondere handelt es sich um ein Dosiersystem für an Robotern oder sonstigen Beschichtungsmaschinen montierte Zerstäuber für die Serienbeschichtung von Werkstücken wie beispielsweise Fahrzeugkarossen. Bekannte Beschichtungsmaschinen dieser Art oder deren Zerstäuber enthalten mechanisch von einem elektromechanischen Spindelantrieb betätigte Dosierzylinder ( DE 19610588 , EP 0693319 ), die aber den durch ihre Bauform bedingten großen Platzbedarf haben. Die Länge dieser bekannten Dosiersysteme, die wegen der Kolbenstange etwa doppelt so groß ist wie der Kolbenhub, beeinträchtigt bei Lackierrobotern und sonstigen Handhabungsgeräten die Erreichbarkeit von Werkstückbereichen wie beispielsweise Fahrzeuginnenräumen. Neben der Baugröße haben diese Dosierzylinder aber auch aufgrund der konstruktionsbedingten Elastizitäten des Spindelantriebs, also u.a. des erforderlichen Spiels der Getriebe- und anderen Antriebselemente nicht die in manchen Fällen gewünschte extrem hohe Dosiergenauigkeit. Darüber hinaus haben sie unzureichendes Dynamikverhalten bei schnellen Änderungen des Dosiersollwerts, der die jeweils benötigte Ausflussmenge des zu dem Zerstäubungsorgan geförderten Beschichtungsmaterials vorgibt.In particular, it is a dosing system for mounted on robots or other coating machines atomizer for the series coating of workpieces such as vehicle bodies. Known coating machines of this type or their atomizers contain mechanically actuated by an electromechanical spindle drive dosing ( DE 19610588 . EP 0693319 ), which have the space required by their design large. The length of these known metering systems, which is about twice as large as the piston stroke because of the piston rod, affects the accessibility of workpiece areas such as vehicle interiors in painting robots and other handling devices. In addition to the size of these dosing but also due to the design-related elasticities of the spindle drive, ie, inter alia, the required clearance of the gear and other drive elements not in some cases desired extremely high dosing accuracy. In addition, they have insufficient dynamic behavior with rapid changes in the dosing setpoint, which dictates the required outflow quantity of the coating material conveyed to the atomizing element.

Es sind zwar auch schon Zerstäuber mit hydraulisch angetriebenen Kolben-Zylindereinheiten bekannt ( EP 0967016 ), deren Druckflüssigkeit aber von einer außerhalb des Zerstäubers befindlichen Pumpe oder Dosiereinheit zugeführt werden muss. Hierfür ist beträchtlicher mechanischer Aufwand mit vielen Schnittstellen für das Dosiermedium erforderlich, besonders bei lösbar und während des Beschichtungsbetriebes ggf. zusammen mit dem Zerstäuber wechselbar montierten Dosierzylindern. Ferner ist auch bei diesen bekannten Systemen nur eine begrenzte Dosiergenauigkeit möglich, u.a. durch Schlupf z. B. aufgrund von Spülkanälen an der Dosierpumpe.Although there are already known atomizer with hydraulically driven piston-cylinder units ( EP 0967016 ), but the pressure fluid must be supplied by a pump or dosing unit located outside of the atomizer. For this considerable mechanical effort with many interfaces for the dosing is required, especially in solvable and possibly during coating operation together with the atomizer changeable mounted dosing cylinders. Furthermore, even in these known systems only a limited metering accuracy is possible, inter alia, by slip z. B. due to flushing channels on the metering pump.

Probleme hinsichtlich Dosiergenauigkeit und Dynamik ergeben sich auch bei anderen bekannten Zerstäubern mit Zylinderbehältern für das Beschichtungsmaterial, deren Kolben durch Druckluft angetrieben wird ( US 5310120 , JP 8-229446 ).Problems with metering accuracy and dynamics also arise in other known atomizers with cylindrical containers for the coating material, the piston of which is driven by compressed air ( US 5310120 . JP 8-229446 ).

Aus US 5 292 036 ist ein zur Farbversorgung eines Zerstäubers dienender Dosierzylinder bekannt, dessen Kolben zum Entleeren des Zylinders auf seiner Rückseite durch Druckluft beaufschlagt wird. Zur Steuerung der Ausflussrate greift an dem Kolben ebenfalls auf seiner Rückseite ferner über ein Spindelgetriebe ein elektrischer Schrittmotor an, der entweder den Kolben gleichwirkend mit dem Luftdruck antreiben oder aber als Steuerbremse wirken soll. Der Dosierzylinder befindet sich am Ende eines Roboterarms.Out US 5,292,036 is a serving for ink supply of an atomizer dosing known, the piston is pressurized to empty the cylinder on its back by compressed air. To control the outflow rate attacks on the piston also on its back further via a spindle gear on an electric stepper motor, which is either the same effect driving the piston with the air pressure or acting as a control brake. The dosing cylinder is located at the end of a robot arm.

Ferner offenbart die am 19.09.2001 veröffentlichte EP 1 134 027 A1 (Stand der Technik nach Artikel 54(3) EPÜ) ein Potenzialtrennsystem mit einem elektrostatischen Zerstäuber, dessen aus einem Metallrohr oder einem flexiblen Schlauch bestehende Versorgungsleitung zur Aufnahme des benötigten Farbvolumens bemessen ist und eine für die Potenzialtrennung zwischen einem Farbwechsler und dem Zerstäuber ausreichende Länge hat. In der Leitung befindet sich ein wie ein Molch verschiebbarer Kolben, der zur Förderung der Farbe in Richtung zu dem Zerstäuber geschoben wird. Auf der dem Farbvolumen abgewandten Seite des Kolbens greift über ein Kabel eine Zugeinrichtung mit einem Motor an. Hinter dem Kolben befindliche Luft kann sowohl zur elektrischen Isolierung als auch zum Antrieb des Kolbens dienen.Furthermore, the published on 19.09.2001 discloses EP 1 134 027 A1 (Prior art according to Article 54 (3) EPC) a potential separation system with an electrostatic atomizer, which is measured from a metal tube or a flexible hose supply line for receiving the required color volume and sufficient for the electrical isolation between a color changer and the atomizer length , In the line is a displaceable like a pig pistons, which is pushed to promote the color towards the atomizer. On the side facing away from the color volume of the piston engages a pulling device with a motor via a cable. Air located behind the piston can serve both for electrical insulation and for driving the piston.

Aufgabe der Erfindung ist, ein einfaches, kompakt zu bauendes Dosiersystem der betrachteten Gattung anzugeben, das mit hoher Dosiergenauigkeit und bei Sollwertänderungen mit höchstmöglicher Dynamik arbeitet.The object of the invention is to provide a simple, compact to be built dosing of the type considered, which works with high dosing accuracy and setpoint changes with the highest possible dynamics.

Diese Aufgabe wird durch das in den Patentansprüchen angegebene Dosiersystem gelöst.This object is achieved by the metering system specified in the claims.

Im Gegensatz zu bekannten Dosierzylindern mit Druckluftantrieb wirkt erfindungsgemäß die erste Antriebseinrichtung, vorzugsweise eine pneumatische oder mechanische Druckeinrichtung, nur als Vorspanneinrichtung für den Kolbenantrieb. Die eigentliche Dosierung erfolgt durch das Zugelement, das nur eine zu dem Vorspanndruck entgegengesetzte Kraft auf den Kolben ausübt und dessen durch diesen Vordruck bewirkte Bewegung in genau dem gewünschten Maße zulässt. Da alle mechanischen Übertragungselemente zwischen dem Kolben und der die Ausflussmenge des Beschichtungsmaterials bestimmenden mechanischen zweiten Antriebseinrichtung unter ständiger Zugbelastung stehen, entfallen die Toleranzen der bekannten elektromechanischen Kolbenantriebe, so dass sich eine wesentlich genauere Dosierung ergibt. Zugleich folgt das System aufgrund des Vordrucks direkt, schlupffrei und schnell auch sprunghaften Sollwertänderungen.In contrast to known metering cylinders with compressed air drive, according to the invention, the first drive device, preferably a pneumatic or mechanical pressure device, acts only as a pretensioning device for the piston drive. The actual dosage is carried out by the tension element, which exerts only a force opposite to the biasing force on the piston and its caused by this form allows movement in exactly the desired extent. Since all mechanical transmission elements between the piston and the outflow of the coating material determining mechanical second drive means are under constant tensile load, eliminating the tolerances of the known electromechanical piston actuators, so that there is a much more accurate metering. At the same time, the system follows directly due to the form directly, slip-free and fast also sudden set point changes.

Aufgrund der möglichen kompakten Bauweise eignet sich das hier beschriebene Dosiersystem besonders vorteilhaft für den Einbau in Zerstäuber und räumlich begrenzte Bereiche von Beschichtungsmaschinen.Due to the possible compact design, the metering system described here is particularly advantageous for installation in atomizers and spatially limited areas of coating machines.

An dem in der Zeichnung schematisch und vereinfacht dargestellten Ausführungsbeispiel wird die Erfindung näher erläutert.The invention is explained in more detail in the exemplary embodiment illustrated schematically and simplified in the drawing.

Das dargestellte Dosiersystem enthält einen zylinderartigen Behälter 1, in dem ein Kolben 2 längs der Zylinderachse verschiebbar gelagert ist. Der Kolben 2 unterteilt den Behälterinnenraum in einen ersten Bereich 4 für die Antriebsenergie des Systems auf der in der Zeichnung oberen Seite und einen zweiten Bereich 3, in dem sich das zu dosierende Beschichtungsmaterial wie z. B. Farblack befindet. Als Antriebsmedium kann zweckmäßig Druckluft dienen, die von einer Quelle 5 durch einen Lufteinlass 10 kommend bei dem dargestellten Beispiel den ersten Behälterbereich 4 unter Druck setzt, dadurch den Kolben 2 in Richtung zu dem zweiten Behälterbereich 3 beaufschlagt und folglich das System in dieser Kraftrichtung vorspannt. Statt Druckluft können auch andere gasförmige oder auch flüssige Druckmedien verwendet werden, die im Gegensatz etwa zu den mit Dosierflüssigkeit arbeitenden bekannten Systemen nicht dosiert zugeführt werden müssen. Statt eines Druckmediums kann zur Erzeugung der Antriebs- oder Vorspannkraft für den Kolben aber auch eine mechanische Druck- oder Zugeinrichtung insbesondere mit einer Feder vorgesehen sein.The dosing system shown contains a cylinder-like container 1, in which a piston 2 is slidably mounted along the cylinder axis. The piston 2 divides the container interior into a first region 4 for the drive energy of the system on the upper side in the drawing and a second region 3 in which the coating material to be metered such. B. color lacquer is located. Compressed air can be used as the drive medium, which pressurizes the first container region 4 coming from a source 5 through an air inlet 10 in the illustrated example, thereby pressurizing the piston 2 in the direction of the second container region 3 and thus biasing the system in this force direction. Instead of compressed air, it is also possible to use other gaseous or even liquid pressure media, which, unlike the known systems operating with dosing liquid, for example, do not have to be dosed. Instead of a pressure medium can be provided in particular with a spring for generating the drive or biasing force for the piston but also a mechanical pressure or traction device.

An einer unkontrollierten Bewegung aufgrund der bei dem dargestellten Beispiel vorgesehenen Druckbeaufschlagung wird der Kolben 2 von einem auf der Seite des ersten Bereiches 4 an dem Kolben angreifenden flexiblen Zugelement 6 gehindert, bei dem es sich um ein zugfestes und nicht längselastisches oder dehnbares Draht-, Flachband- oder Kettenglied od. dgl. aus Metall oder Kunststoff handeln kann. Das Zugelement 6 ist durch eine Öffnung 11 aus dem Behälter 1 herausgeführt und kann außerhalb des Behälters über Rollen 12, 12' in eine zweckmäßige Richtung beispielsweise parallel zur Bewegungsrichtung des Kolbens 2 umgelenkt werden. Das Zugelement 6 hat die Funktion, dem Kolbendruck zur Steuerung der Kolbenbewegung entsprechend der gewünschten Ausflussmenge nachzugeben, und ist zu diesem Zweck an seinem dem Kolben 2 abgewandten Ende mit einer programmgesteuerten elektromechanischen Antriebseinheit 7 verbunden. Bei dem dargestellten Beispiel ist das flexible Zugelement 6 an dem Gewinderad 13 einer Spindel 14 befestigt, die von einem Servomotor oder sonstigen programmgesteuerten elektrischen Motor 15 angetrieben wird. Der Motor 15 ist umsteuerbar, so dass beim Zurückfahren des Kolbens 2 in Richtung zum ersten Bereich 4 nach Beendigung eines Beschichtungsvorgangs das Zugelement 6 im entsprechenden Maße wieder aus dem Behälter 1 herausgezogen werden kann.In an uncontrolled movement due to the pressure applied in the illustrated example, the piston 2 is prevented from acting on the side of the first region 4 on the piston flexible traction element 6, which is a tensile and not longitudinally elastic or stretchable wire, ribbon - or chain link od. Like. Can be made of metal or plastic. The tension element 6 is through a Opening 11 led out of the container 1 and can be deflected outside the container via rollers 12, 12 'in an expedient direction, for example, parallel to the direction of movement of the piston 2. The tension element 6 has the function of yielding the piston pressure for controlling the piston movement in accordance with the desired outflow quantity, and for this purpose is connected to a program-controlled electromechanical drive unit 7 at its end facing away from the piston 2. In the illustrated example, the flexible tension member 6 is fixed to the threaded wheel 13 of a spindle 14, which is driven by a servo motor or other program-controlled electric motor 15. The motor 15 is reversible, so that when pulling back the piston 2 in the direction of the first region 4 after completion of a coating operation, the tension element 6 can be pulled out again from the container 1 to the appropriate extent.

Statt der Linear- oder translatorischen Antriebseinheit 7 des dargestellten Beispiels können auch andere Einrichtungen zur Steuerung der Folgebewegung des Zugelements 6 dienen, beispielsweise eine rotatorische Antriebseinheit mit einem Aufrollmechanismus zum Auf- und Abwickeln des Zugelements 6 während der Hin- und Herbewegung des Kolbens 2 in dem Behälter 1.Instead of the linear or translatory drive unit 7 of the illustrated example, other means for controlling the following movement of the tension member 6 serve, for example, a rotary drive unit with a retractor for winding and unwinding of the tension member 6 during the reciprocation of the piston 2 in the Container 1.

Wenn der Behälterbereich 4 unter Druck gesetzt werden soll, muss er gegen die Umgebung des Behälters abgedichtet sein. Zur Abdichtung an der Stelle der Herausführung des Zugelementes 6 aus dem Behälter 1 kann es genügen, beispielsweise einen das Zugelement bildenden Runddraht durch eine Dichtmanschette an der Öffnung 11 zu führen. In anderen Fällen kann es aber zweckmäßiger sein, auf eine Abdichtung der Herausführung 11 zu verzichten, auch um dem Zugelement 6 eine möglichst freie Bewegung zu ermöglichen, und dessen Weg bis zum Kolben 2 gegen die Umgebung offen, also druckfrei zu gestalten. Bei dem dargestellten Beispiel ist das Zugelement 6 zu diesem Zweck von einer längs der Bewegungsrichtung des Kolbens 2 beweglichen, beispielsweise balgartigen Umhüllung 17 umschlossen, die gegen den unter Druck setzbaren Behälterbereich 4 abdichtend an ihrem einen Ende an dem Kolben 2 und an ihrem anderen Ende an der die Herausführungsöffnung 11 umgebenden Wand des Behälters 1 befestigt ist.If the container portion 4 is to be pressurized, it must be sealed against the environment of the container. For sealing at the location of the lead-out of the tension element 6 from the container 1, it may be sufficient, for example, to guide a round wire forming the tension element by a sealing collar at the opening 11. In other cases, it may be more expedient to dispense with a seal of the lead-out 11, also to allow the traction element 6 as free movement as possible, and to make its way to the piston 2 against the environment open, so pressure-free. In the illustrated example, the tension element 6 is for this purpose by a longitudinal the direction of movement of the piston 2 movable, for example, bellows-type envelope 17 enclosed, which is secured against the pressurizable container portion 4 sealingly at its one end to the piston 2 and at its other end to the discharge opening 11 surrounding wall of the container 1.

In Abwandlung des beschriebenen Beispiels bestehen auch andere Möglichkeiten für die Druckbeaufschlagung des Kolbens in dem ersten Behälterbereich 4. Statt den Behälterbereich 4 selbst unter Druck zu setzen, kann man beispielsweise auch einen unter Druck setzbaren und dadurch expandierenden Balg od. dgl. einbauen, der den Kolben 2 in Richtung zu dem zweiten Behälterbereich 3 drückt.In a modification of the example described, there are other possibilities for pressurizing the piston in the first container area 4. Instead of putting the container area 4 itself under pressure, it is also possible, for example, to install a pressurizable and thus expanding bellows or the like Piston 2 toward the second container portion 3 presses.

Der das Beschichtungsmaterial enthaltende Behälterbereich 3 hat eine Materialauslassöffnung 19, an die eine zu dem Zerstäubungsorgan 20 des Zerstäubers, in den der Behälter 1 und vorzugsweise auch die anderen Bestandteile des Dosiersystems einschließlich der Antriebseinheit 7 vorteilhaft eingebaut sein können, führende Leitung angeschlossen ist. Das Zerstäubungsorgan 20 kann beispielsweise der Glockenteller eines elektrostatischen Rotationszerstäubers oder die Düse eines Luftzerstäubers od. dgl. sein.The container area 3 containing the coating material has a material outlet opening 19, to which a line leading to the atomizing device 20 of the atomizer, into which the container 1 and preferably also the other components of the metering system including the drive unit 7 can be advantageously installed, is connected. The atomizing member 20 may be, for example, the bell cup of an electrostatic rotary atomizer or the nozzle of an air atomizer or the like.

Nach Beendigung eines Beschichtungsvorgangs, bei dem der Kolben 2 den Behälterbereich 3 ganz oder teilweise entleert hat, wird er wieder in seine Ausgangsstellung zurückgeschoben. Das kann durch den Druck des Farb- oder sonstigen Beschichtungsmaterials bewirkt werden, das beim Einfüllvorgang u. U. durch die Auslassöffnung 19, vorzugsweise aber durch eine zusätzliche in den Bereich 3 führende Einlassöffnung gemäß dem Pfeil 21 in den Behälter 1 geleitet wird. Das Zugelement 6 wird im gleichen Maße von der Antriebseinheit 7 zurückgezogen. Eine andere Möglichkeit besteht darin, dass die Antriebseinheit 7 den Kolben 2 gegen den auch beim Einfüllvorgang wirkenden Druck der Quelle 5 zurückzieht, wobei sich der dadurch freiwerdende Bereich 3 mit dem Beschichtungsmaterial füllt.After completion of a coating process in which the piston 2 has completely or partially emptied the container area 3, it is pushed back again into its starting position. This can be caused by the pressure of the paint or other coating material, the u during filling process u. U. through the outlet opening 19, but preferably by an additional leading into the area 3 inlet opening according to the arrow 21 is passed into the container 1. The tension element 6 is retracted to the same extent by the drive unit 7. Another possibility is that the drive unit 7, the piston 2 against the acting also during the filling pressure of the source fifth withdraws, wherein the thus released area 3 fills with the coating material.

Claims (11)

  1. Metering system for a coating device, with a container (1) and a piston (2) which is displaceable in the container and separates a first container zone (4) from a second container zone (3) which contains the coating material to be metered, with at least one opening (19, 21) for filling or emptying the second container zone (3) and with a first drive means (5) by which a driving force can be exerted on the piston (2) in the direction towards the second container zone (3), wherein a traction element (6) engages on the piston (2) on the side of the first container zone (4) and the traction element (6) is connected to a second drive means (7) by which the movement of the piston (2) driven by the first drive means (5) can be controlled for metering of the coating material, characterised in that the traction element (6) is a flexible wire, belt or chain element which connects the piston (2) to the second drive means (7) located outside the container (1), and that the traction element (6) is surrounded by a sleeve (17) which is movable along the direction of movement of the piston (2) and which seals the first container zone (4) which can be pressurised.
  2. Metering system as claimed in Claim 1, characterised in that an electromechanical drive means (7) engages on the traction element (6).
  3. Metering system for a coating device with a piston (2) which is displaceable in the container and which separates a first container zone (4) from a second container zone (3) containing the coating material to be metered, with at least one opening (19, 21) for filling or emptying of the second container zone (3) and with a first drive means (5) by which a driving force can be exerted on the piston (2) in the direction towards the second container zone (3), wherein a traction element engages on the piston (2) on the side of the first container zone (4) and the traction element (6) is connected to a second drive means (7) by which the movement of the piston (2) driven by the first drive means (5) can be controlled for metering of the coating material, characterised in that the traction element (6) is a flexible wire, belt or chain element which connects the piston (2) to the second drive means (7) located outside the container (1), and that the second drive means (7) contains a spindle (14) which can be turned by a controlled motor (15).
  4. Metering system as claimed in Claim 1, 2 or 3, characterised in that the opening (11) through which the traction element (6) extends out of the container (1) is sealed against the pressurisable container zone (4).
  5. Metering system as claimed in Claim 1, characterised in that one end of the sleeve (17) is fixed on the piston (2) and is sealed against the pressurisable container zone (4) and he other end of the sleeve is fixed on the wall of the container (1) and surrounds the opening (11).
  6. Metering system as claimed in Claim 1, characterised in that the second drive means (7) contains a spindle (14) which can be turned by a controlled motor (15).
  7. Metering system as claimed in Claim 1, characterised in that the second drive means contains a reel which can be rotated by a controlled motor for winding and unwinding of the traction element (6).
  8. Metering system as claimed in any one of the preceding claims, characterised in that on the side of the first container zone (4) the first drive means (5) exerts a pressing force on the piston (2).
  9. Metering system as claimed in any one of the preceding claims, characterised in that the first drive means contains a source (5) for a pressure medium by which in the first container zone (4) a pressure can be exerted on the piston (2) for driving the piston.
  10. Metering system as claimed in any one of Claims 1 to 8, characterised in that the first drive means contains a spring which generates the driving force.
  11. Metering system as claimed in any one of the preceding claims, characterised in that an inlet line of the atomiser device (20) of an atomiser, in which the metering system or at least the container (1) can be disposed, can be connected to the outlet (19) of the second container zone (3)
EP02015531A 2001-07-27 2002-07-10 Dosing system for coating device Expired - Lifetime EP1279440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136720A DE10136720A1 (en) 2001-07-27 2001-07-27 Dosing system for a coating device
DE10136720 2001-07-27

Publications (3)

Publication Number Publication Date
EP1279440A2 EP1279440A2 (en) 2003-01-29
EP1279440A3 EP1279440A3 (en) 2004-11-10
EP1279440B1 true EP1279440B1 (en) 2008-10-08

Family

ID=7693353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015531A Expired - Lifetime EP1279440B1 (en) 2001-07-27 2002-07-10 Dosing system for coating device

Country Status (4)

Country Link
EP (1) EP1279440B1 (en)
AT (1) ATE410237T1 (en)
DE (2) DE10136720A1 (en)
ES (1) ES2314012T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8418647B2 (en) 2005-10-21 2013-04-16 Dürr Systems Inc. Procedure and piston type metering devices for the metered material supply for a coating device
US7908994B2 (en) 2005-10-21 2011-03-22 Duerr Systems, Inc. Automatically steered coating machine also a container for the coating material
DE102007029195A1 (en) 2007-06-25 2009-02-19 Dürr Systems GmbH Coating device for serially coating workpieces with different shades comprises a separate color changer containing color valves to which are connected color lines for the coating material
ES2534328T3 (en) 2006-12-12 2015-04-21 Dürr Systems GmbH Coating device with a dosing device
DE102006058562A1 (en) 2006-12-12 2008-08-14 Dürr Systems GmbH Coating device for serially coating workpieces with different shades comprises a separate color changer containing color valves to which are connected color lines for the coating material
CN108465614B (en) * 2018-04-28 2019-06-07 重庆鑫楠木材加工有限公司 The two-sided mopping device of cork sheet
CN108380416B (en) * 2018-05-15 2020-07-14 中国空间技术研究院 Split type jet device capable of jetting for multiple times and jet method
CN109013090B (en) * 2018-09-18 2020-07-07 江苏金泰祥内外门业有限公司 Glue coating box

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440381A1 (en) * 1984-11-05 1986-05-07 Ransburg Gmbh, 6056 Heusenstamm METHOD AND DEVICE FOR AUTOMATIC ELECTROSTATIC SPRAY COATING
FR2677611A1 (en) * 1991-06-11 1992-12-18 Sames Sa ADJUSTABLE CAPACITY TANK FOR LIQUID PRODUCTS.
FR2695327B1 (en) 1992-09-09 1995-07-07 Sames Sa Device for electrostatic projection of electrically conductive coating product, provided with an insulated reservoir adapted to contain such a product.
JP3013734B2 (en) 1995-03-01 2000-02-28 トヨタ自動車株式会社 Rotary atomizing electrostatic coating device, method of mounting paint tank unit on coating gun body of rotary atomizing electrostatic coating device, and paint tank unit of rotary atomizing electrostatic coating device
KR100320343B1 (en) 1998-01-13 2002-01-12 라붸 린도베르 Rotary atomizing head type coating device
JP3803034B2 (en) * 2000-03-15 2006-08-02 株式会社大気社 Painting equipment

Also Published As

Publication number Publication date
ATE410237T1 (en) 2008-10-15
EP1279440A2 (en) 2003-01-29
DE10136720A1 (en) 2003-02-13
DE50212853D1 (en) 2008-11-20
EP1279440A3 (en) 2004-11-10
ES2314012T3 (en) 2009-03-16

Similar Documents

Publication Publication Date Title
EP0292778B1 (en) Process and installation for electrostatic coating with a conductive coating product
EP2036618B1 (en) Metering system for a coating assembly
EP2185293B1 (en) Application system
EP2101925B1 (en) Coating apparatus comprising a metering device
EP0865830B2 (en) Colour changer with reversible direction of paint flow
EP1245294B1 (en) Sprayer for a coating installation and process for feeding coating material to the sprayer
DE19610588B4 (en) Coating machine with replaceable container
EP1279440B1 (en) Dosing system for coating device
DE102019219083A1 (en) Printing device for a 3D printer
EP1885508B1 (en) Compressed-air gun
DE3329296A1 (en) Process and device for metering viscous substances, especially two-component plastics
DD270665A5 (en) METHOD AND APPARATUS FOR ELECTROSTATIC COATING IN THE CONDUCTIVE MATERIAL
EP2929944A1 (en) Dye spraying device
EP2810719B1 (en) Supply device for a coating agent and appropriate operating method
DE102009007116A1 (en) Container e.g. hollow-cylindrical cartridge, for use in dispensing system of e.g. vehicle industry, has valve with sleeve movable towards hollow space in opening position to discharge adhesives or sealants from space via discharging opening
EP1516676B1 (en) Method for operating a media supply device
DE10257414B4 (en) Hand dispenser with electromotive drive
DE10020157A1 (en) Injection system for production of solid or foamed components from fluid reactive materials has an injection nozzle with bellows moving freely inside a housing in response to hydraulic pressure on a piston
EP0455106B1 (en) Method and plant for coating series of work pieces with conductive coating material
DE202009017678U1 (en) Dosing and mixing device for sealants and adhesives
DE102004042211A1 (en) Adhesive applying device for beats of paste-like substance, has holder with adhesive and designed as closed adhesive pistol, where pressure subjection of adhesive takes place by direct admission of cartridge base with pressurizing medium
DE19649461C2 (en) Method and device for applying a viscous material
DE4209065C2 (en) Valve and dosing device
DE3238058A1 (en) Device for applying a paste-like medium such as adhesive or the like
EP3017873B1 (en) Coating system for coating objects

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20050311

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17Q First examination report despatched

Effective date: 20051110

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50212853

Country of ref document: DE

Date of ref document: 20081120

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2314012

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090217

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

26N No opposition filed

Effective date: 20090709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50212853

Country of ref document: DE

Owner name: DUERR SYSTEMS AG, DE

Free format text: FORMER OWNER: DUERR SYSTEMS GMBH, 74321 BIETIGHEIM-BISSINGEN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50212853

Country of ref document: DE

Representative=s name: V. BEZOLD & PARTNER PATENTANWAELTE - PARTG MBB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50212853

Country of ref document: DE

Owner name: DUERR SYSTEMS AG, DE

Free format text: FORMER OWNER: DUERR SYSTEMS AG, 74321 BIETIGHEIM-BISSINGEN, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20210721

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20210727

Year of fee payment: 20

Ref country code: IT

Payment date: 20210727

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20210721

Year of fee payment: 20

Ref country code: BE

Payment date: 20210721

Year of fee payment: 20

Ref country code: SE

Payment date: 20210721

Year of fee payment: 20

Ref country code: GB

Payment date: 20210721

Year of fee payment: 20

Ref country code: ES

Payment date: 20210927

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50212853

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20220709

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20220710

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20220709

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220805

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20220709

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20220711