EP1119420B1 - Painting device - Google Patents

Painting device Download PDF

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Publication number
EP1119420B1
EP1119420B1 EP00960395A EP00960395A EP1119420B1 EP 1119420 B1 EP1119420 B1 EP 1119420B1 EP 00960395 A EP00960395 A EP 00960395A EP 00960395 A EP00960395 A EP 00960395A EP 1119420 B1 EP1119420 B1 EP 1119420B1
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EP
European Patent Office
Prior art keywords
paint
colour change
sensor
pig
change device
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
EP00960395A
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German (de)
French (fr)
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EP1119420A1 (en
Inventor
Erich Meyer
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.)
Eisenmann Lacktechnik KG
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Eisenmann Lacktechnik KG
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Publication of EP1119420A1 publication Critical patent/EP1119420A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1481—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0551—Control mechanisms therefor

Definitions

  • the present invention relates to a painting device according to the preamble of claim 1.
  • Such painting devices are known from the market (see, for example, DE patent application 197 09 988.2).
  • a so-called “newt” used By this is meant an element, e.g. a Ball, which e.g. pressurized by the connecting device is moved. This can, if necessary, under addition a cleaning agent, the connecting device getting cleaned.
  • the user interrupts the painting process to z. B. to change to a new color
  • the first is the Still located in the connection device paint withdrawn with a pump. Then the newt will be out his at the gun unit lying pig station up moved to the pig station of the color changing device and the connecting device behind the pig with air and a cleaning agent, e.g. a paint thinner, rinsed.
  • a cleaning agent e.g. a paint thinner
  • connection device Paint residues are doing in the color changing device and pushed back into the corresponding paint supply line. Then compressed air is assigned to the color changing device Scabbard created and thereby the newt moved back towards the gun unit. There the pig pushes the detergent with dissolved in it Lack residues in front of him, which through the Pisoleniser sprayed and e.g. be caught in a container can. Arrived at the gun unit moves the Pig again in his resting position in the local pig station.
  • Object of the present invention is therefore, a Painting device of the type mentioned so educate, that wasted in the cleaning process Paint quantities and after a cleaning process in the system existing amounts of residual paint can be significantly reduced.
  • the pig can move through the entire color changing device and clean them. That one possibly behind the pig cleaning agent, e.g. a liquid thinner, gets into the paint feed device is characterized prevents the corresponding paint valve is closed as soon as the newt at the mouth of the corresponding Lackzuleitng passed. The then still in the Color change device located paint amount is through discharged the residual paint valve device. It can possibly be reused and is in any case many times over less than conventional painting equipment.
  • the pig cleaning agent e.g. a liquid thinner
  • a color pressure regulator is present, which is not in the area the color changer, where he has their input for the would block pig but in the area of the gun unit is arranged.
  • the input from the Connecting device for color changing device for the Scavenger freely throughout, so that this up easily into and through the color changing device can move through.
  • FIG. 10 shows in a schematic Block diagram of a painting device, which generally designated by the reference numeral 10 (in The block diagram are for better identification fluid-carrying lines drawn with double lines).
  • It includes a gun unit 12, a stationary one Unit 14, one the gun unit 12 with the stationary Unit 14 connecting connecting device, which is presently designed as a tube 16, as well a controller 18 whose functions later in detail be explained.
  • the gun unit 12 will be explained in detail.
  • a gun 20 includes a spray nozzle 22, which in the figure is directed to a container 24.
  • a color pressure regulator 26 is connected to the Gun 20.
  • This is in turn via a valve 28 with a paint channel 30 connected, which part of the tube 16 is.
  • the valve 28 has an open and a closed Position and is from the controller 18 via a line 31 driven.
  • the gun 20 is mechanical with a switch 32 connected, which the controller 18 via a line 34 provides an input signal. As below is shown, by the switch 32 is a cleaning process triggered.
  • the gun unit 12 further includes a pig station 36, in which a not shown in the figure Newt has his starting position.
  • the pig station 36 is at its one end with the paint channel 30 and on its other end connected to a valve 38. This is controlled by the controller 18 via a line 40 and connects the pig station 36 to a secondary channel 42, which is also part of the tube 16.
  • a motion sensor 44 is arranged, which via a line 46, a signal to the controller 18th give up when the newt moves past him.
  • this includes a color changing device 48, which is essentially to an elongated cylindrical chamber. At her hose side front end is the color changing device 48 connected to the paint channel 30. At this End is also a motion sensor 50 is arranged, which via a line 52, a signal to the controller 18th give up when the newt moves past him.
  • valves 54, 56 and 58 On the side of the color changer 48 are valves 54, 56 and 58, which the interior of the color changing device 48 optionally with paint feeders 60, 62 and 64 can connect. Paint supply lines 61, 63 and 65 lead from the paint feeders 60, 62 and 64th via paint valves 54, 56 and 58 to the color changer 48. The corresponding mouths of the supply lines 61, 63 and 65 in the color changer 48 are with denoted by reference numerals 55, 57 and 59.
  • the valves 54, 56 and 58 are connected via lines 66, 68 and 70 of the Control 18 controlled.
  • the color changing device 48 connected to a pig station 66, in which the newt has its final position. Between Pig station 66 and color changing device 48 is a Motion sensor 68 is arranged, which via a line 70 outputs a signal to the controller when the newt moved past him.
  • the pig station 66 At the end of the pig station 66, which is the color changer 48 away, is the pig station 66 via a residual paint channel 72 and a residual paint valve 74th connected to an outlet opening 76, which in the present Embodiment over a residual paint container 78th lies.
  • the residual paint valve 74 is via a line 80th controlled by the controller 18.
  • the pig station 66 is at its from the color changer 48 remote end also with a valve 82nd connected, which via a line 84 from the controller 18 is controlled. At the other end it is Valve 82 is connected to a compressed air source 86.
  • conduit 88 From this is a conduit 88 and a container 90 with a cleaning agent, e.g. Paint thinner, applied, which in turn fluidly connected to the secondary channel 42 is.
  • a cleaning agent e.g. Paint thinner
  • the painting device 10 works as follows:
  • the pig In normal painting operation, the pig is in the pig station 36 of the gun unit 12.
  • the valve 38 in the gun unit 12 is closed, as is the Valves 74 and 82 behind the stationary pig station 66.
  • the paint valves 54, 56 and 58 is basically at most one opened. In the present case, it is assumed that the paint valve 56 is opened and the paint valves 54 and 58th are closed.
  • paint passes from the paint feed device 62 via the paint supply line 63 through the paint valve 56 through and over the mouth 57 in the color changing device 48 and from there via the paint channel 30th through the open valve 28 in the gun unit 12th through the paint pressure regulator 26 in the gun 20th
  • the paint is sprayed through the nozzle 22.
  • the switch 32 is actuated, which is a Signal to the controller 18 outputs (the switch can cooperate mechanically or non-contact with the container 24).
  • the controller 18 is controlled by the signal indicated that the gun unit 12 in the container 24 is mounted. It then causes the valve 28 closed and the valve 38 is opened.
  • On the Secondary channel 42 passes due to the pressurization through the pressure vessel 86 detergent from the Container 90 via the open valve 38 in the pig station 36 and pushes the pig (not shown) in the paint channel 30.
  • the pig moves first to the color changer 48 of the stationary unit 14 and presses while remaining in the paint channel 30 residual paint in front of him and back into the paint supply 63. At the same time it fills behind the pig Section of the paint channel 30 with detergent.
  • the newt moves now to the final position in the pig station 66 and pushes it in the chamber the color changer 48 between the mouth 57th and the pig station 66 existing residual paint over the residual paint channel 72 and the outlet opening 76 in the Residual paint container 78. Due to the fact that the paint valve 56th is closed, prevents cleaning agent in the paint supply line 63 passes.
  • the cleaning agent located in the paint channel 30 is through the pig through the open valve 28, the Color pressure regulator 26 and the gun 20 to the spray nozzle 22nd pressed and exits from this into the container 24.
  • this is from the sensor 44 detected which sends a signal to the controller 18 delivers.
  • the controller 18 closes the valve 82 again, whereby the cleaning process is completed.
  • a new color and open the appropriate valve 54, 56 or 58 are now, e.g. on the controller 18 a new color and open the appropriate valve 54, 56 or 58.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spray Control Apparatus (AREA)
  • Fluid-Driven Valves (AREA)
  • Seal Device For Vehicle (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Confectionery (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

Prior art painting devices are perceived as being disadvantageous in that a relatively large amount of paint is lost during cleaning carried out using a scraper, and by virtue of the fact that the color changing device can not be fully cleaned. In order to prevent this drawback, the invention provides that the scraping station (66) assigned to the color changing device (48) is arranged on the end of the color changing device (48) facing away from the connecting device (12). This enables the scraper, during a cleaning process, to also move through the color changing device (48) and to clean the same. In order to prevent a contamination of the paint supply device (60, 62, 64), a control element (18) closes a paint valve (54, 56, 58), which has just been opened, at the moment in which the scraper moves past the opening of the corresponding paint supply line (61, 63, 65). The position of the scraper is detected by a sensor (50) in the area of the color changing device (48). The residual paint present in the color changing device (48) between the opening of the corresponding paint supply line (61, 63, 65) and the scraping station (66) is carried away via a residual paint channel (72).

Description

Die vorliegende Erfindung betrifft eine Lackiervorrichtung gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a painting device according to the preamble of claim 1.

Derartige Lackiervorrichtungen sind vom Markt her bekannt (siehe z.B. DE-Patentanmeldung 197 09 988.2). Bei ihnen wird zur Reinigung der Verbindungseinrichtung (im allgemeinen ein Schlauch) zwischen Farbwechseleinrichtung und Pistoleneinheit ein sogenannter "Molch" verwendet. Darunter versteht man ein Element, z.B. eine Kugel, welches z.B. druckbeaufschlagt durch die Verbindungseinrichtung bewegt wird. Hierdurch kann, ggf. unter Zusatz eines Reinigungsmittels, die Verbindungseinrichtung gereinigt werden.Such painting devices are known from the market (see, for example, DE patent application 197 09 988.2). In them, to clean the connecting device (generally a hose) between color changer and gun unit a so-called "newt" used. By this is meant an element, e.g. a Ball, which e.g. pressurized by the connecting device is moved. This can, if necessary, under addition a cleaning agent, the connecting device getting cleaned.

Während des Lackierens befindet sich bei den bekannten Lackiervorrichtungen der Molch in einer Molchstation im Bereich der Pistoleneinheit. Eine weitere Molchstation befindet sich am der Verbindungseinrichtung zugewandten Ende der Farbwechseleinrichtung (hierunter versteht man eine Vorrichtung, welche die Lackierpistole wahlweise mit einer von mehreren vorgeförderten und in der Regel unter Druck stehenden Lackfarben verbinden kann).During painting is in the known Painting equipment of the pig in a pig station in the Area of the gun unit. Another pig station is located on the connecting device facing End of the color changing device (this means a device which the paint spray gun with optional one of several pre-funded and usually under Can connect pressure paint colors).

Wenn der Benutzer den Lackiervorgang unterbricht, um z. B. auf eine neue Farbe zu wechseln, wird zunächst der sich noch in der Verbindungseinrichtung befindliche Lack mit einer Pumpe zurückgezogen. Dann wird der Molch aus seiner bei der Pistoleneinheit liegenden Molchstation bis zur Molchstation der Farbwechseleinrichtung bewegt und die Verbindungseinrichtung hinter dem Molch mit Luft und einem Reinigungsmittel, z.B. einem Lackverdünner, gespült. If the user interrupts the painting process to z. B. to change to a new color, the first is the Still located in the connection device paint withdrawn with a pump. Then the newt will be out his at the gun unit lying pig station up moved to the pig station of the color changing device and the connecting device behind the pig with air and a cleaning agent, e.g. a paint thinner, rinsed.

Die sich noch in der Verbindungseinrichtung befindlichen Lackreste werden dabei in die Farbwechseleinrichtung und in die entsprechende Lackzuleitung zurückgedrückt. Dann wird Preßluft an der der Farbwechseleinrichtung zugeordneten Molchstation angelegt und hierdurch der Molch wieder in Richtung Pistoleneinheit zurückbewegt. Dabei schiebt der Molch das Reinigungsmittel mit darin gelösten Lackresten vor sich her, welches durch die Pisoleneinheit abgesprüht und z.B. in einem Behälter aufgefangen werden kann. An der Pistoleneinheit angelangt bewegt sich der Molch wieder in seine Ruheposition in der dortigen Molchstation.The still located in the connection device Paint residues are doing in the color changing device and pushed back into the corresponding paint supply line. Then compressed air is assigned to the color changing device Scabbard created and thereby the newt moved back towards the gun unit. there the pig pushes the detergent with dissolved in it Lack residues in front of him, which through the Pisoleneinheit sprayed and e.g. be caught in a container can. Arrived at the gun unit moves the Pig again in his resting position in the local pig station.

Bei der bekannten Lackiervorrichtung ist von Nachteil, daß am Ende des Reinigungsvorganges eine gewisse Menge an Restlack in der Farbwechseleinrichtung verbleibt. Zu Beginn eines neuen Lackiervorganges tritt daher aus der Pistole zunächst durch Restlack verunreinigter Lack aus. Daher muß der Benutzer zunächst etwas Lack absprühen, bevor er mit dem eigentlichen Lackiervorgang beginnen kann. Hierdurch erhöht sich der Lackverbrauch, was insbesondere unter Umwelt-Gesichtspunkten als schlecht empfunden wird.In the known painting device is disadvantageous that at the end of the cleaning process a certain amount remains on residual paint in the color changer. At the beginning of a new painting process therefore occurs the pistol first by residual paint contaminated paint out. Therefore, the user must first spray some paint, before he can start the actual painting process. This increases the paint consumption, which in particular is perceived as bad from an environmental point of view.

Aufgabe der vorliegenden Erfindung ist es daher, eine Lackiervorrichtung der eingangs genannten Art so weiterzubilden, daß die bei dem Reinigungsvorgang vergeudeten Lackmengen und die nach einem Reinigungsvorgang im System vorhandenen Mengen an Restlack deutlich reduziert werden.Object of the present invention is therefore, a Painting device of the type mentioned so educate, that wasted in the cleaning process Paint quantities and after a cleaning process in the system existing amounts of residual paint can be significantly reduced.

Diese Aufgabe wird durch die im Anspruch 1 angegebene Lackiervorrichtung gelöst.This object is achieved by the specified in claim 1 Paint device solved.

Da sich die der Farbwechseleinrichtung zugeordnete Molchstation am der Verbindungseinrichtung abgewandten Ende der Farbwechseleinrichtung befindet, kann sich der Molch durch die gesamte Farbwechseleinrichtung hindurchbewegen und diese reinigen. Daß ein sich ggf. hinter dem Molch befindliches Reinigungsmittel, z.B. ein flüssiger Verdünner, in die Lack-Speiseeinrichtung gelangt, wird dadurch verhindert, daß das entsprechende Lackventil geschlossen wird, sobald sich der Molch an der Mündung der entsprechenden Lackzuleitng vorbeibewegt. Die dann noch in der Farbwechseleinrichtung befindliche Lackmenge wird durch die Restlackventileinrichtung abgeführt. Sie kann ggf. wiederverwendet werden und ist jedenfalls um ein Vielfaches geringer als bei herkömmlichen Lackiervorrichtungen.Since the color changing device associated pig station at the end facing away from the connecting device the color changer is located, the pig can move through the entire color changing device and clean them. That one possibly behind the pig cleaning agent, e.g. a liquid thinner, gets into the paint feed device is characterized prevents the corresponding paint valve is closed as soon as the newt at the mouth of the corresponding Lackzuleitng passed. The then still in the Color change device located paint amount is through discharged the residual paint valve device. It can possibly be reused and is in any case many times over less than conventional painting equipment.

Auf seinem Weg von der Molchstation an der Farbwechseleinrichtung in die Ausgangsposition in der Molchstation in der Pistoleneinheit schiebt der Molch das ggf. vorhandene Reinigungsmittel vor sich her, welches über die Pistoleneinheit z.B. in einen Auffangbehälter austritt und dabei die Pistoleneinheit bzw. die Düse der eigentlichen Lackierpistole ebenfalls reinigt.On his way from the pig station to the color changer to the starting position in the pig station in the pig unit pushes the possibly existing one Detergent in front of him, which via the gun unit e.g. in a collecting container exits and thereby the gun unit or the nozzle of the actual paint spray gun also cleans.

Am Ende eines Reinigungsvorganges ist somit die Lackiervorrichtung einschließlich der Farbwechseleinrichtung gereinigt, so daß sofort mit dem Lackieren mit einer neuen Farbe begonnen werden kann. Die einzige Menge an Lack, die nicht sofort wieder verfügbar ist, ist jene, welche sich in der Farbwechseleinrichtung zwischen der Mündung der Lackzuleitung und der Endposition des Molches befindet. Somit werden die Lackverluste gegenüber herkömmlichen Lackiervorrichtung erheblich reduziert.At the end of a cleaning process is thus the painting including the color changer cleaned, so that immediately with the painting with a new color can be started. The only quantity paint that is not immediately available again is that which is in the color changing device between the Mouth of the paint supply line and the final position of the pig located. Thus, the paint losses compared to conventional Painting device considerably reduced.

Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben.Advantageous developments of the invention are in subclaims specified.

Ein wichtiger Aspekt ist gemäß Anspruch 2, daß ein Farbdruckregler vorhanden ist, welcher nicht im Bereich der Farbwechseleinrichtung, wo er deren Eingang für den Molch blockieren würde, sondern im Bereich der Pistoleneinheit angeordnet ist. Somit wird der Eingang von der Verbindungseinrichtung zur Farbwechseleinrichtung für den Molch frei durchgängig, so daß dieser sich problemlos bis in die Farbwechseleinrichtung hinein und durch diese hindurchbewegen kann.An important aspect is according to claim 2 that a color pressure regulator is present, which is not in the area the color changer, where he has their input for the Would block pig but in the area of the gun unit is arranged. Thus, the input from the Connecting device for color changing device for the Scavenger freely throughout, so that this up easily into and through the color changing device can move through.

Gemäß der Weiterbildung nach Anspruch 3 genügt ein einziger Sensor, um den Schließvorgang der Lackventileinrichtung und der Restlackventileinrichtung zu steuern.According to the embodiment of claim 3 is sufficient a single Sensor to the closing process of the paint valve device and the residual paint valve device to control.

Gemäß Anspruch 4 genügt eine einfache Steuerung, um die erfindungsgemäßen Ziele zu erreichen.According to claim 4, a simple control is sufficient to to achieve the objectives of the invention.

Die Weiterbildung der Erfindung gemäß Anspruch 5 vereinfacht die Handhabung der erfindungsgemäßen Lackiervorrichtung, da pistolenseitig keine zusätzlichen Vorrichtungen zum Antrieb des Molches erforderlich sind.The development of the invention according to claim 5 simplified the handling of the painting device according to the invention, there pistol side no additional devices are required to drive the pig.

Die Erfindung wird nun unter Bezugnahme auf die einzige Figur im Detail erläutert. Diese zeigt in einem schematischen Blockschaltbild eine Lackiervorrichtung, welche insgesamt mit dem Bezugszeichen 10 bezeichnet ist (in dem Blockschaltbild sind zur besseren Kenntlichmachung fluidführende Leitungen mit doppelten Linien gezeichnet).The invention will now be described with reference to the only Figure explained in detail. This shows in a schematic Block diagram of a painting device, which generally designated by the reference numeral 10 (in The block diagram are for better identification fluid-carrying lines drawn with double lines).

Sie umfaßt eine Pistoleneinheit 12, eine stationäre Einheit 14, eine die Pistoleneinheit 12 mit der stationären Einheit 14 verbindende Verbindungseinrichtung, welche vorliegend als Schlauch 16 ausgebildet ist, sowie eine Steuerung 18, deren Funktionen später im Detail erläutert werden.It includes a gun unit 12, a stationary one Unit 14, one the gun unit 12 with the stationary Unit 14 connecting connecting device, which is presently designed as a tube 16, as well a controller 18 whose functions later in detail be explained.

Zunächst wird die Pistoleneinheit 12 im Detail erklärt. First, the gun unit 12 will be explained in detail.

Eine Pistole 20 umfaßt eine Spritzdüse 22, welche in der Figur auf einen Behälter 24 gerichtet ist. An die Pistole 20 ist ein Farb-Druckregler 26 angeschlossen. Dieser ist wiederum über ein Ventil 28 mit einem Lackkanal 30 verbunden, welcher Bestandteil des Schlauches 16 ist. Das Ventil 28 hat eine geöffnete und eine geschlossene Stellung und wird von der Steuerung 18 über eine Leitung 31 angesteuert.A gun 20 includes a spray nozzle 22, which in the figure is directed to a container 24. To the Gun 20, a color pressure regulator 26 is connected. This is in turn via a valve 28 with a paint channel 30 connected, which part of the tube 16 is. The valve 28 has an open and a closed Position and is from the controller 18 via a line 31 driven.

Die Pistole 20 ist mechanisch mit einem Schalter 32 verbunden, welcher der Steuerung 18 über eine Leitung 34 ein Eingangssignal bereitstellt. Wie weiter unten dargestellt ist, wird durch den Schalter 32 ein Reinigungsvorgang ausgelöst.The gun 20 is mechanical with a switch 32 connected, which the controller 18 via a line 34 provides an input signal. As below is shown, by the switch 32 is a cleaning process triggered.

Die Pistoleneinheit 12 umfaßt ferner eine Molchstation 36, in welcher ein in der Figur nicht dargestellter Molch seine Ausgangsposition hat. Die Molchstation 36 ist an ihrem einen Ende mit dem Lackkanal 30 und an ihrem anderen Ende mit einem Ventil 38 verbunden. Dieses wird über eine Leitung 40 von der Steuerung 18 angesteuert und verbindet die Molchstation 36 mit einem Sekundärkanal 42, welcher ebenfalls Bestandteil des Schlauches 16 ist.The gun unit 12 further includes a pig station 36, in which a not shown in the figure Newt has his starting position. The pig station 36 is at its one end with the paint channel 30 and on its other end connected to a valve 38. This is controlled by the controller 18 via a line 40 and connects the pig station 36 to a secondary channel 42, which is also part of the tube 16.

Im Bereich des Ausgangs der Molchstation 36 zum Lackkanal 30 ist ein Bewegungssensor 44 angeordnet, welcher über eine Leitung 46 ein Signal an die Steuerung 18 abgibt, wenn sich der Molch an ihm vorbeibewegt.In the area of the output of the pig station 36 to the paint channel 30, a motion sensor 44 is arranged, which via a line 46, a signal to the controller 18th give up when the newt moves past him.

Nun werden die Funktionselemente der stationären Einheit 14 erläutert. Zunächst umfaßt diese eine Farbwechseleinrichtung 48, bei welcher es sich im wesentlichen um eine langgestreckte zylindrische Kammer handelt. An ihrem schlauchseitigen Stirnende ist die Farbwechseleinrichtung 48 mit dem Lackkanal 30 verbunden. An diesem Ende ist auch ein Bewegungssensor 50 angeordnet, welcher über eine Leitung 52 ein Signal an die Steuerung 18 abgibt, wenn sich der Molch an ihm vorbeibewegt.Now the functional elements of the stationary unit 14 explained. First, this includes a color changing device 48, which is essentially to an elongated cylindrical chamber. At her hose side front end is the color changing device 48 connected to the paint channel 30. At this End is also a motion sensor 50 is arranged, which via a line 52, a signal to the controller 18th give up when the newt moves past him.

Seitlich an der Farbwechseleinrichtung 48 sind Ventile 54, 56 und 58 angeordnet, welche den Innenraum der Farbwechseleinrichtung 48 wahlweise mit Lack-Speiseeinrichtungen 60, 62 und 64 verbinden können. Lackzuleitungen 61, 63 und 65 führen von den Lack-Speiseinrichtungen 60, 62 und 64 über die Lackventile 54, 56 und 58 zur Farbwechseleinrichtung 48. Die entsprechenden Mündungen der Zuleitungen 61, 63 und 65 in den Farbwechseleinrichtung 48 sind mit den Bezugszeichen 55, 57 und 59 bezeichnet. Die Ventile 54, 56 und 58 werden über Leitungen 66, 68 und 70 von der Steuerung 18 angesteuert.On the side of the color changer 48 are valves 54, 56 and 58, which the interior of the color changing device 48 optionally with paint feeders 60, 62 and 64 can connect. Paint supply lines 61, 63 and 65 lead from the paint feeders 60, 62 and 64th via paint valves 54, 56 and 58 to the color changer 48. The corresponding mouths of the supply lines 61, 63 and 65 in the color changer 48 are with denoted by reference numerals 55, 57 and 59. The valves 54, 56 and 58 are connected via lines 66, 68 and 70 of the Control 18 controlled.

Es sei an dieser Stelle darauf hingewiesen, daß im vorliegenden Ausführungsbeispiel aus Gründen der Übersichtlichkeit der Figur nur drei Lack-Speiseeinrichtungen dargestellt sind. Bei anderen Ausführungsbeispielen können 50 Lack-Speiseeinrichtungen und mehr angeschlossen sein. Die Farbwechseleinrichtung muß dann natürlich entsprechend größer ausgelegt werden.It should be noted at this point that in the present Embodiment for reasons of clarity the figure only three paint feeders are shown. In other embodiments can connect 50 paint feeders and more be. The color changer must then of course be designed to be larger accordingly.

An dem vom Schlauch 16 abgewandten Ende ist die Farbwechseleinrichtung 48 mit einer Molchstation 66 verbunden, in welcher der Molch seine Endposition hat. Zwischen Molchstation 66 und Farbwechseleinrichtung 48 ist ein Bewegungssensor 68 angeordnet, welcher über eine Leitung 70 ein Signal an die Steuerung abgibt, wenn sich der Molch an ihm vorbeibewegt.At the end remote from the hose 16 is the color changing device 48 connected to a pig station 66, in which the newt has its final position. Between Pig station 66 and color changing device 48 is a Motion sensor 68 is arranged, which via a line 70 outputs a signal to the controller when the newt moved past him.

An dem Ende der Molchstation 66, welches von der Farbwechseleinrichtung 48 abgewandt ist, ist die Molchstation 66 über einen Restlackkanal 72 und ein Restlackventil 74 mit einer Auslaßöffnung 76 verbunden, welche im vorliegenden Ausführungsbeispiel über einem Restlackbehälter 78 liegt. Das Restlackventil 74 wird über eine Leitung 80 von der Steuerung 18 angesteuert.At the end of the pig station 66, which is the color changer 48 away, is the pig station 66 via a residual paint channel 72 and a residual paint valve 74th connected to an outlet opening 76, which in the present Embodiment over a residual paint container 78th lies. The residual paint valve 74 is via a line 80th controlled by the controller 18.

Die Molchstation 66 ist an ihrem von der Farbwechseleinrichtung 48 abgewandten Ende auch mit einem Ventil 82 verbunden, welches über eine Leitung 84 von der Steuerung 18 angesteuert wird. An seinem anderen Ende ist das Ventil 82 mit einer Druckluftquelle 86 verbunden.The pig station 66 is at its from the color changer 48 remote end also with a valve 82nd connected, which via a line 84 from the controller 18 is controlled. At the other end it is Valve 82 is connected to a compressed air source 86.

Aus dieser wird über eine Leitung 88 auch ein Behälter 90 mit einem Reinigungsmittel, z.B. Lackverdünner, beaufschlagt, welcher wiederum mit dem Sekundärkanal 42 fluidverbunden ist.From this is a conduit 88 and a container 90 with a cleaning agent, e.g. Paint thinner, applied, which in turn fluidly connected to the secondary channel 42 is.

Die Lackiervorrichtung 10 funktioniert wie folgt:The painting device 10 works as follows:

Im normalen Lackierbetrieb befindet sich der Molch in der Molchstation 36 der Pistoleneinheit 12. Das Ventil 38 in der Pistoleneinheit 12 ist geschlossen, ebenso die Ventile 74 und 82 hinter der stationären Molchstation 66. Von den Lackventilen 54, 56 und 58 ist grundsätzlich höchstens eines geöffnet. Vorliegend sei angenommen, daß das Lackventil 56 geöffnet und die Lackventile 54 und 58 geschlossen sind. Somit gelangt Lack aus der Lack-Speiseeinrichtung 62 über die Lackzuleitung 63 durch das Lackventil 56 hindurch und über die Mündung 57 in die Farbwechseleinrichtung 48 und von dort über den Lackkanal 30 durch das geöffnete Ventil 28 in der Pistoleneinheit 12 hindurch über den Farb-Druckregler 26 in die Pistole 20. Der Lack wird über die Düse 22 ausgesprüht.In normal painting operation, the pig is in the pig station 36 of the gun unit 12. The valve 38 in the gun unit 12 is closed, as is the Valves 74 and 82 behind the stationary pig station 66. Of the paint valves 54, 56 and 58 is basically at most one opened. In the present case, it is assumed that the paint valve 56 is opened and the paint valves 54 and 58th are closed. Thus, paint passes from the paint feed device 62 via the paint supply line 63 through the paint valve 56 through and over the mouth 57 in the color changing device 48 and from there via the paint channel 30th through the open valve 28 in the gun unit 12th through the paint pressure regulator 26 in the gun 20th The paint is sprayed through the nozzle 22.

Möchte der Benutzer nun z.B. die Farbe des Lackes wechseln, hängt er die Pistoleneinheit 12 in den Behälter 24. If the user now wants to see e.g. change the color of the paint, he hangs the gun unit 12 in the container 24th

Hierdurch wird der Schalter 32 betätigt, welcher ein Signal an die Steuerung 18 abgibt (der Schalter kann mechanisch oder berührungslos mit dem Behälter 24 zusammenarbeiten). Der Steuerung 18 wird durch das Signal angezeigt, daß die Pistoleneinheit 12 in den Behälter 24 eingehängt ist. Sie veranlaßt hierauf, daß das Ventil 28 geschlossen und das Ventil 38 geöffnet wird. Über den Sekundärkanal 42 gelangt aufgrund der Druckbeaufschlagung durch den Druckbehälter 86 Reinigungsmittel aus dem Behälter 90 über das geöffnete Ventil 38 in die Molchstation 36 und drückt den Molch (nicht dargestellt) in den Lackkanal 30. In diesem bewegt sich der Molch zunächst zur Farbwechseleinrichtung 48 der stationären Einheit 14 und drückt dabei den in dem Lackkanal 30 verbliebenen Restlack vor sich her und zurück in die Lackzuleitung 63. Gleichzeitig füllt sich der hinter dem Molch liegende Abschnitt des Lackkanals 30 mit Reinigungsmittel.As a result, the switch 32 is actuated, which is a Signal to the controller 18 outputs (the switch can cooperate mechanically or non-contact with the container 24). The controller 18 is controlled by the signal indicated that the gun unit 12 in the container 24 is mounted. It then causes the valve 28 closed and the valve 38 is opened. On the Secondary channel 42 passes due to the pressurization through the pressure vessel 86 detergent from the Container 90 via the open valve 38 in the pig station 36 and pushes the pig (not shown) in the paint channel 30. In this, the pig moves first to the color changer 48 of the stationary unit 14 and presses while remaining in the paint channel 30 residual paint in front of him and back into the paint supply 63. At the same time it fills behind the pig Section of the paint channel 30 with detergent.

Wenn der Molch sich am Eingang der Farbwechseleinrichtung 48 vorbeibewegt, wird dies vom Sensor 50 erfaßt, welcher ein Signal über die Leitung 52 an die Steuerung 18 abgibt. In einem Speicher der Steuerung 18 wird nun ein dort abgelegtes Zeitintervall abgerufen, welches der berechneten oder in Vorversuchen ermittelten Zeit entspricht, die der Molch benötigt, um die Strecke vom Sensor 50 bis zur Mündung 57 der Lackzuleitung 63 zurückzulegen. Gleichzeitig beginnt ein Zeitzähler (nicht dargestellt) zu laufen. Wenn die abgelaufene Zeit dem abgerufenen Speicherwert entspricht, wenn sich der Molch also vor der Mündung 57 befindet, schließt die Steuerung 18 das Lackventil 56 und öffnet das Restlackventil 74.When the newt is at the entrance to the color changer 48 passes, this is detected by the sensor 50, which sends a signal via the line 52 to the controller 18. In a memory of the controller 18 is now there stored time interval retrieved, which of the calculated or time determined in preliminary tests, which corresponds to the Scrap needed to cover the distance from the sensor 50 to the Muzzle 57 of paint supply line 63 to cover. simultaneously a time counter (not shown) starts to run. If the elapsed time is the retrieved memory value corresponds, if the pig so before the mouth 57th is located, the controller 18 closes the paint valve 56th and opens the residual paint valve 74.

Der Molch bewegt sich nun weiter bis in die Endposition in der Molchstation 66 und drückt dabei die in der Kammer der Farbwechseleinrichtung 48 zwischen der Mündung 57 und der Molchstation 66 vorhandene Restlackmenge über den Restlackkanal 72 und die Auslaßöffnung 76 in den Restlackbehälter 78. Dadurch, daß das Lackventil 56 geschlossen ist, wird verhindert, daß Reiniungsmittel in die Lackzuleitung 63 gelangt.The newt moves now to the final position in the pig station 66 and pushes it in the chamber the color changer 48 between the mouth 57th and the pig station 66 existing residual paint over the residual paint channel 72 and the outlet opening 76 in the Residual paint container 78. Due to the fact that the paint valve 56th is closed, prevents cleaning agent in the paint supply line 63 passes.

Sobald der Molch in seiner Endposition in der Molchstation 66 ist, wird dies vom Sensor 68 erfaßt, welcher ein Signal über die Leitung 70 an die Steuerung 18 abgibt. Hierdurch veranlaßt die Steuerung 18, daß die Ventile 28 und 82 geöffnet und die Ventile 38 und 74 geschlossen werden. Der Molch wird nun von der anderen Seite mit Druckluft aus dem Druckluftbehälter 86 beaufschlagt und durch die Farbwechseleinrichtung 48 hindurch in den Lackkanal 30 zurückgedrückt.Once the pig in its final position in the pig station Is 66, this is detected by the sensor 68, which sends a signal via the line 70 to the controller 18. As a result, the controller 18 causes the Valves 28 and 82 open and valves 38 and 74 getting closed. The newt is now from the other Side with compressed air from the compressed air tank 86 applied and through the color changer 48 pushed back into the paint channel 30.

Das sich im Lackkanal 30 befindliche Reinigungsmittel wird durch den Molch durch das geöffnete Ventil 28, den Farb-Druckregler 26 und die Pistole 20 zur Spritzdüse 22 gedrückt und tritt aus dieser in den Behälter 24 aus. Sobald der Molch wieder in der Molchstation 36, also seiner Ausgangsposition, angelangt ist, wird dies vom Sensor 44 festgestellt, welcher ein Signal an die Steuerung 18 abgibt. Die Steuerung 18 schließt das Ventil 82 wieder, wodurch der Reinigungsvorgang abgeschlossen ist. Der Benutzer kann nun z.B. an der Steuerung 18 eine neue Farbe wählen und das entsprechende Ventil 54, 56 oder 58 öffnen.The cleaning agent located in the paint channel 30 is through the pig through the open valve 28, the Color pressure regulator 26 and the gun 20 to the spray nozzle 22nd pressed and exits from this into the container 24. As soon as the newt again in the pig station 36, so his Starting position, this is from the sensor 44 detected which sends a signal to the controller 18 delivers. The controller 18 closes the valve 82 again, whereby the cleaning process is completed. Of the User can now, e.g. on the controller 18 a new color and open the appropriate valve 54, 56 or 58.

Claims (5)

  1. A painting device, having:
    a) a gun unit (12) by means of which paint can be applied to a workpiece;
    b) a colour change device (48) to which at least two paint supply devices (60, 62, 64) are attached;
    c) a connection device (16) by means of which the gun unit (12) and the colour change device (48) are connected to one another;
    d) a pigging station (36) associated with the gun unit (12);
    e) a pigging station (66) associated with the colour change device (48);
    f) a pig which, during a cleaning phase, can be moved from the pigging station (36) associated with the gun unit (12), through the connection device (16) and into the pigging station (66) associated with the colour change device (48), and back again;
    g) a paint valve device (54, 56, 58) which can optionally connect one of the paint supply devices (60, 62, 64) to the colour change device (48) or completely interrupt the connection;
    h) a residual paint valve device (74) which can connect the colour change device to a drainage line (76);
    i) a control (18) which cooperates with the gun unit (12), the paint valve device and the residual paint valve device (74);
    characterised in that
    j) the pigging station (66) associated with the colour change device (48) is located in the vicinity of the end of the colour change device (48) remote from the connection device (16);
    k) at least one sensor (50) is provided in the region of the colour change device (48) and emits a signal to the control (18) when the pig passes the sensor (50) in the direction of the pigging station (66) associated with the colour change device (48);
    l) the control (18) processes the signal from the sensor (50) such that the paint valve device (56) which has just opened is closed at the moment when the pig passes the orifice (57) of the corresponding paint supply device (62) on its way to the pigging station (66) associated with the colour change device (48); and
    m) at this moment the control (18) opens the residual paint valve device (74).
  2. A painting device according to Claim 1, characterised in that it has a paint pressure regulator (26) which is arranged in the gun unit (12).
  3. A painting device according to Claim 1 or 2, characterised in that
    a) the sensor (50) is arranged on the side where the connection device (16) has its input to the colour change device (48);
    b) the control (18) includes a memory in which the time interval which the pig needs to move from the sensor (50) to that orifice (57) of the paint supply device (62) which is currently in fluid connection with the colour change device (48) is stored;
    c) the control closes the corresponding paint valve device (56) once the time interval since the input of the signal has expired and opens the residual paint valve device (74) once this time interval has expired.
  4. A painting device according to Claim 1 or 2, characterised in that a respective sensor is arranged at each orifice of a paint supply device to the colour change device, and the control closes the paint valve device which has just opened and opens the residual paint valve device when it receives a signal from the corresponding sensor.
  5. A painting device according to one of the preceding claims, characterised in that the connection device includes a hose (16) which includes at least one duct (30) for paint and at least one duct (42) for compressed air and/or cleaning agent.
EP00960395A 1999-08-07 2000-08-04 Painting device Expired - Lifetime EP1119420B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19937474A DE19937474C2 (en) 1999-08-07 1999-08-07 Painting device with a gun unit, a color changing device and a piggable connecting device
DE19937474 1999-08-07
PCT/EP2000/007596 WO2001010564A1 (en) 1999-08-07 2000-08-04 Painting device

Publications (2)

Publication Number Publication Date
EP1119420A1 EP1119420A1 (en) 2001-08-01
EP1119420B1 true EP1119420B1 (en) 2005-10-26

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Application Number Title Priority Date Filing Date
EP00960395A Expired - Lifetime EP1119420B1 (en) 1999-08-07 2000-08-04 Painting device

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Country Link
EP (1) EP1119420B1 (en)
AT (1) ATE307678T1 (en)
CA (1) CA2346419A1 (en)
CZ (1) CZ20011228A3 (en)
DE (2) DE19937474C2 (en)
WO (1) WO2001010564A1 (en)

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DE10063234C1 (en) * 2000-12-19 2002-07-04 Duerr Systems Gmbh Hose system, for coating vehicle bodywork, has an inner hose with a moving pig through it held without kinks in an outer hose by compressed air in the ring zone between them
DE10131562A1 (en) * 2001-06-29 2003-01-16 Duerr Systems Gmbh Method and system for supplying a coating device
FR2832331B1 (en) * 2001-11-16 2004-01-02 Etcm Ensemblier SELF-CONTAINED AND REMOVABLE INSTALLATION FOR SCRAPING PIPES IN A CLOSED CIRCUIT, ESPECIALLY FOR RINSING PAINT LINES CARRIED OUT DURING CHANGES IN TINT IN THE AUTOMOTIVE INDUSTRY
DE10211244A1 (en) * 2002-03-13 2003-10-23 Lactec Ges Fuer Moderne Lackte Painting system for applying liquid coating material
DE10233005B4 (en) 2002-07-20 2004-09-16 Eisenmann Lacktechnik Kg Device for supplying a sensor with high electrical potential in a paint shop with electrical energy
DE10235102B4 (en) * 2002-08-01 2006-07-27 Lac Tec GmbH Gesellschaft für moderne Lackiertechnik Painting device with a piggable valve device
DE10239516A1 (en) * 2002-08-28 2004-03-18 Dürr Systems GmbH Hose with pig for delivery of electrically conductive fluid paints or varnishes at high voltage comprises an inner layer enclosed in an insulating layer with high voltage resistance
FR2846895B1 (en) * 2002-11-13 2005-06-24 Etcm Ensemblier AUTONOMOUS AND REMOVABLE INSTALLATION FOR SCRAPPING OF CLOSED-CIRCUIT PIPES, INTENDED IN PARTICULAR FOR UGNES PAINT RACING EFFECTED DURING TINT CHANGES IN THE AUTOMOTIVE INDUSTRY
DE10346601A1 (en) * 2003-10-07 2005-05-12 Duerr Systems Gmbh Method and system for supplying material consumers via pigging lines
DE102004015417A1 (en) * 2004-03-26 2005-10-13 Putzmeister Ag Apparatus and method for cleaning a thick matter delivery line
DE102004042512A1 (en) * 2004-09-02 2006-03-30 Hydac Accessories Gmbh valve device
US20080173236A1 (en) * 2005-04-13 2008-07-24 Wojcik John P Shuttle Push System For Coating Applicators
DE102008015258B4 (en) * 2008-03-20 2023-05-25 Dürr Systems Ag Color changer for a painting robot
RU2492937C2 (en) 2008-03-20 2013-09-20 Дюрр Системз Гмбх Varnishing robot and method of its operation
DE102008037035B4 (en) * 2008-08-08 2023-05-25 Dürr Systems Ag Valve arrangement of a painting robot
EP2669305A1 (en) 2012-06-01 2013-12-04 Solvay Sa Process for manufacturing an epoxy resin
DE102014004718A1 (en) * 2014-04-01 2015-10-01 Eisenmann Ag Coating system and method for coating objects
CN111939449B (en) * 2020-09-15 2021-02-19 广州仁麦生物科技有限公司 Wound cleaning device with biosensor

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DE19742588B4 (en) * 1997-09-26 2009-02-19 Dürr Systems GmbH Method for serial coating of workpieces

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WO2001010564A1 (en) 2001-02-15
DE50011440D1 (en) 2005-12-01
CA2346419A1 (en) 2001-02-15
DE19937474C2 (en) 2001-08-02
CZ20011228A3 (en) 2002-03-13
EP1119420A1 (en) 2001-08-01
DE19937474A1 (en) 2001-03-22
ATE307678T1 (en) 2005-11-15

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