EP1502657B1 - Coating material changer - Google Patents

Coating material changer Download PDF

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Publication number
EP1502657B1
EP1502657B1 EP04016003A EP04016003A EP1502657B1 EP 1502657 B1 EP1502657 B1 EP 1502657B1 EP 04016003 A EP04016003 A EP 04016003A EP 04016003 A EP04016003 A EP 04016003A EP 1502657 B1 EP1502657 B1 EP 1502657B1
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EP
European Patent Office
Prior art keywords
line
coating medium
coating
changer
color
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EP04016003A
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German (de)
French (fr)
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EP1502657A2 (en
EP1502657A3 (en
Inventor
Stefano Giuliano
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Duerr Systems AG
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Duerr Systems AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • 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
    • B05B12/149—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 characterised by colour change manifolds or valves therefor

Definitions

  • the invention relates to a coating agent changer, in particular a color changer for a paint shop, according to the preamble of claim 1.
  • the known color changer on several paint connections, which open via a respective controllable color valve in a common color line.
  • the desired paint is selected by controlling the associated paint valve while the other paint valves are closed.
  • the common color line In a color change, however, the common color line must first be cleaned of residues of the paint previously used to prevent deterioration of the Lackierieris after a color change.
  • the known color changer in addition to a detergent connection, a pulse air connection and a return port, which also open via controllable valves in the common color line.
  • all color valves are initially closed so that the paint supply is interrupted and the paint line can be cleaned.
  • the remaining paint still in the paint line is then pressed out with pulse air.
  • both the pulse air valve and the return valve is opened.
  • the common paint line is cleaned with a rinsing medium (eg thinner) and with pulse air.
  • the purge valve and the pulse air valve are opened alternately. After this cleaning of the common color line then the desired paint can be supplied by the associated color valve is opened.
  • a disadvantage of the known color changer is first the high detergent consumption, which is incurred in the cleaning of the common color line.
  • Another disadvantage of the known color changer is that the paint located in the common paint line can not be used in a color change and increases the paint consumption as a committee.
  • a color changer in which two paint connections open via a respective color valve in a common color line, wherein the desired color is selected by a corresponding control of the color valves.
  • the entire color line must also be rinsed here in order to free it from color residues of the previously applied ink, which is associated with the disadvantages described above.
  • double color changer are known in which two independently operable color changer are connected in parallel and the output side are combined via a separate control valve.
  • each of the two color changer has its own color line, so that when a color change, only one of the two color changer must be rinsed.
  • a disadvantage of such double color changers is the fact that the line volume to be flushed the color line between the respective color changer and the downstream control valve is relatively large due to the structural separation. In addition, the expenditure on equipment for such a double color changer is unsatisfactory.
  • the invention is therefore an object of the invention to provide a color changer, which has the lowest possible color and detergent consumption in a color change.
  • the invention comprises the general technical teaching of dividing the coating agent line in a coating agent changer into at least two line sections and thereby reducing the volume of the coating agent line to be cleaned.
  • the individual line sections of the coating agent line are in this case arranged within the coating medium changer.
  • the coating agent line is therefore preferably internal to the coating agent changer according to the invention, i. within the coating agent changer, divided into several line sections.
  • the coating agent changer according to the invention is preferably designed as an independent component, whereas the known double and multiple color change arrangements described above consist of an interconnection of several independent color changers.
  • the coating medium line consists of at least two line sections, into each of which a plurality of coating agent connections open for a supply of coating agent, wherein at least one of the individual line sections can be flushed independently of the other line section.
  • a color change it is then no longer necessary to rinse the entire coating agent line, whereby the consumption of detergent and paint is significantly reduced in a color change.
  • all line sections of the coating agent line can each be flushed independently of the other line sections. This can be achieved, for example, by connecting the individual line sections of the coating medium line in parallel and bringing them together at their downstream end via a changeover valve.
  • This variant of the invention is particularly well suited when the different paints used have similar frequencies of use.
  • only one of the line sections of the coating medium line can be flushed independently of the other line sections, wherein the independently flushable line section is arranged downstream of the other line section.
  • This variant of the invention is particularly well suited if the individual paints to be used have a very different frequency of use. In the painting of motor vehicle body parts, for example, so-called high-runner colors are used relatively frequently, whereas so-called low-runner colors are required relatively rarely.
  • the high-runner colors are preferably supplied in this variant of the invention, the line section of the coating medium line, which is irrigated independently of the other line section, whereas the less frequently used low-runner colors are supplied to the line section of the common coating agent line, which only together with the other line section of the coating medium line can be rinsed.
  • This variant of the invention with only one flushable line section can be realized for example by the fact that the individual line sections of the coating agent line are arranged one behind the other in the flow direction and merge into each other, which fluidly also can be referred to as a series connection of the individual line sections.
  • a shut-off valve is preferably arranged between the individual line sections in order to separate the individual line sections from one another and thereby permit separate flushing.
  • a rinsing agent connection preferably leads into the coating agent line between the individual line sections in order to be able to rinse the line sections independently of one another.
  • a further flushing agent connection which opens into the coating agent line, is preferably provided at the upstream end of the coating agent line.
  • the rinsing agent is then preferably supplied via the rinse agent connection, which is arranged at the upstream end of the coating agent line.
  • the flushing agent is preferably supplied via the flushing agent connection, which is arranged between the two line sections.
  • a return port is preferably provided to return coating agent residues from the coating agent line, wherein the return port preferably opens between the individual line sections in the coating agent line, to allow recycling of coating residues even if only one of the line sections of the coating agent line is rinsed.
  • a further return port is provided, which opens at the upstream end of the coating agent line in the coating agent line.
  • the individual line sections of the coating agent line are not connected in series, but run fluidically parallel and are merged downstream, the individual parallel line sections of the coating medium line preferably lead to a switching valve that selects one of the line sections.
  • the parallel guided line sections of the coating agent line are also brought together at their upstream end, for which purpose preferably a further changeover valve is used. This is useful in order to be able to select the desired line section in each bidirectional flushing of the individual line sections of the coating agent line.
  • the coating medium changer according to the invention preferably has a pulse air connection, which can be arranged downstream of the separately guided line sections and / or at the downstream end of the coating line and opens into the coating medium line.
  • At least one return connection is provided is provided upstream of the separately routed line sections and / or at the upstream end of the coating agent line into the coating agent line to return coating residues from the coating agent line.
  • the invention is not limited to a coating agent changer as an independent component, but also includes a coating system with such a coating agent changer.
  • the invention is not limited to those coating medium changers which have a coating medium line with only two separate line sections. Rather, it is also possible to divide the coating agent line into more than two line sections in order to further minimize paint and flushing agent losses during the color change.
  • coating system shown can be used, for example, for painting automotive body parts and has a rotary atomizer 1 as an application device.
  • the rotary atomizer 1 is connected on the input side via a metering pump 5 with a color changer 6, which selects one of a total of 20 possible colors F1-F20 and the rotary atomizer 1 feeds, the color changer 6 in FIG. 2 is shown and will be described in detail.
  • bypass valve 7 is further provided.
  • the color changer 6 is modular and expandable to adapt the number of selectable colors to the particular needs of the application can.
  • the color changer 6 a plurality of blocks 9, 10.1-10.7, 11, 12.1-12.3 and 13, wherein the individual blocks 9, 10.1-10.7, 11, 12.1-12.3 and 13 are connected to a common paint line 14 and control the inflow into the paint line 14 or the outflow from the paint line 14 via color control valves FV.
  • Blocks 10.1-10.7 serve to control so-called low-runner colors F1-F14, which are used relatively rarely, whereas blocks 12.1-12.3 serve to control so-called high-runner colors F15-F20, which are used relatively frequently.
  • Block 9 serves for supplying rinsing agent V1 via a rinsing agent valve SV1 and for returning color rests from ink duct 14 during a color change, wherein the return is controlled by a return valve RV1.
  • the block 13 arranged at the downstream end of the paint line 14 enables the supply of pulse air PL1 via a pulse air valve PV and a check valve 15.
  • the block 11 arranged between the blocks 10.1-10.7 of the low-runner colors F1-F14 and the blocks 12.1-12.3 of the high-runner colors F15-F20 has, on the one hand, the task of color line 14 into two line sections 14.1, 14.2 subdivide, wherein the downstream and used for the high-runner colors F15-F20 line section 14.1 of the color line 14 is irrigated independently of the upstream line section 14.2 of the color line 14.
  • the block 11 has a shut-off valve 16 which is arranged between the two line sections 14.1 and 14.2 of the color line 14.
  • FIG. 2 to mention that a backup terminal RE is provided, which is not needed in the embodiment shown here.
  • FIG. 3 illustrated alternative embodiment of a color changer 6 'is largely consistent with that described above and in FIG. 2 illustrated embodiment, so that to avoid repetition of the above description FIG. 2 and reference is made in the following for corresponding components, the same reference numerals, which are characterized only to avoid repetition by an apostrophe.
  • a special feature of the color changer 6 ' is that the color line 14' in two line sections 14.1 ', 14.2' is divided, which are connected in parallel flow. This offers the advantage that the two line sections 14.1 'and 14.2' are both independently flushable.
  • the two blocks 16, 17 each have two shut-off valves, which are designed as 2/2-way valves and together act as a changeover valve.
  • FIG. 4 illustrated alternative embodiment of a color changer 6 "is largely consistent with that described above and in FIG. 3 illustrated embodiment, so reference is made to avoid repetition of the above description and the same reference numerals are used for corresponding components, which are characterized only to avoid repetition by two apostrophes.
  • a difference of the color changer 6 "compared to in FIG. 2 shown color changer 6 ' is that the two separate line sections 14.1 “, 14.2" of the color line 14 "are performed together only downstream, whereas the line sections 14.1” and 14.2 "upstream are separated.
  • the upstream block 9 has two flushing agent connections for supplying flushing agent into the two line sections 14.1" and 14.2 ".
  • the block 17 two pulse air valves PV1, PV2, which are connected via a respective check valve 15.1", 15.2 "with a pulsed air line.

Abstract

Coating medium changers (6), and especially paint changers for a painting plant, has several coating medium connections for the feed of different coating media (F1-F20), whereby the individual connections open into a coating medium line (14). The coating medium line has at least two sections (14.1,14.2) into which at least one coating medium line opens out, whereby at least one of the line sections is flushed independently by the other line section. A shut-off valve (16) is installed between the individual line sections.

Description

Die Erfindung betrifft einen Beschichtungsmittelwechsler, insbesondere einen Farbwechsler für eine Lackieranlage, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a coating agent changer, in particular a color changer for a paint shop, according to the preamble of claim 1.

Aus DE 199 51 956 A1 ist ein Farbwechsler für eine Lackieranlage bekannt, der es der Lackieranlage ermöglicht, nacheinander Lacke unterschiedlicher Farben aufzutragen.Out DE 199 51 956 A1 a color changer for a painting plant is known, which allows the paint shop to apply successively paints of different colors.

Zur Zuführung der verschiedenfarbigen Lacke weist der bekannte Farbwechsler mehrere Farbanschlüsse auf, die über jeweils ein steuerbares Farbventil in eine gemeinsame Farbleitung münden. Der gewünschte Lack wird hierbei dadurch ausgewählt, dass das zugehörige Farbventil aufgesteuert wird, während die anderen Farbventile geschlossen sind.For supplying the differently colored paints, the known color changer on several paint connections, which open via a respective controllable color valve in a common color line. The desired paint is selected by controlling the associated paint valve while the other paint valves are closed.

Bei einem Farbwechsel muss die gemeinsame Farbleitung jedoch zunächst von Resten des zuvor verwendeten Lacks gereinigt werden, um eine Beeinträchtigung des Lackierergebnisses nach einem Farbwechsel zu verhindern. Hierzu weist der bekannte Farbwechsler zusätzlich einen Spülmittelanschluss, einen Pulsluftanschluss sowie einen Rückfuhranschluss auf, die ebenfalls über steuerbare Ventile in die gemeinsame Farbleitung münden. Bei einem Farbwechsel werden zunächst sämtliche Farbventile geschlossen, damit die Lackzufuhr unterbrochen wird und die Farbleitung gereinigt werden kann. Anschließend wird dann der noch in der Farbleitung befindliche Restlack mit Pulsluft herausgedrückt. Hierzu wird sowohl das Pulsluftventil als auch das Rückführventil geöffnet. Im Anschluss daran wird die gemeinsame Farbleitung mit einem Spülmedium (z.B. Verdünner) und mit Pulsluft gereinigt. Hierzu werden das Spülventil und das Pulsluftventil abwechselnd geöffnet. Nach dieser Reinigung der gemeinsamen Farbleitung kann dann der gewünschte Lack zugeführt werden, indem das zugehörige Farbventil aufgesteuert wird.In a color change, however, the common color line must first be cleaned of residues of the paint previously used to prevent deterioration of the Lackierergebnisses after a color change. For this purpose, the known color changer in addition to a detergent connection, a pulse air connection and a return port, which also open via controllable valves in the common color line. In a color change, all color valves are initially closed so that the paint supply is interrupted and the paint line can be cleaned. Subsequently, the remaining paint still in the paint line is then pressed out with pulse air. For this purpose, both the pulse air valve and the return valve is opened. Following this, the common paint line is cleaned with a rinsing medium (eg thinner) and with pulse air. To do this the purge valve and the pulse air valve are opened alternately. After this cleaning of the common color line then the desired paint can be supplied by the associated color valve is opened.

Nachteilig an dem bekannten Farbwechsler ist zunächst der hohe Spülmittelverbrauch, der bei der Reinigung der gemeinsamen Farbleitung anfällt.A disadvantage of the known color changer is first the high detergent consumption, which is incurred in the cleaning of the common color line.

Ein weiterer Nachteil des bekannten Farbwechslers besteht darin, dass der in der gemeinsamen Farbleitung befindliche Lack bei einem Farbwechsel nicht weiter verwendet werden kann und als Ausschuss den Lackverbrauch erhöht.Another disadvantage of the known color changer is that the paint located in the common paint line can not be used in a color change and increases the paint consumption as a committee.

Die vorstehend erwähnten Nachteile werden zusätzlich dadurch verschärft, dass die Zahl der verwendeten Farben beispielsweise bei der Lackierung von Kraftfahrzeugkarosserieteilen zunimmt, wodurch sich auch die Anzahl der Farbventile und damit die Länge und das Volumen der gemeinsamen Farbleitung erhöht. Bei modernen Lackieranlagen mit beispielsweise zwanzig möglichen Farben ist das zu reinigende Volumen der gemeinsamen Farbleitung und damit der bei einem Farbwechsel entstehende Lack- und Spülmittelverbrauch also relativ groß.The above-mentioned disadvantages are further aggravated by the fact that the number of colors used for example in the painting of motor vehicle body parts increases, which also increases the number of color valves and thus the length and the volume of the common color line. In modern paint shops with, for example, twenty possible colors to be cleaned volume of the common color line, and thus the paint and detergent consumption resulting from a color change is therefore relatively large.

Aus DE 696 22 407 T2 ist ein Farbwechsler bekannt, bei dem zwei Farbanschlüsse über jeweils ein Farbventil in eine gemeinsame Farbleitung münden, wobei die gewünschte Farbe durch eine entsprechende Ansteuerung der Farbventile ausgewählt wird. Bei einem Farbwechsel muss hierbei jedoch ebenfalls die gesamte Farbleitung gespült werden, um diese von Farbresten der zuvor applizierten Farbe zu befreien, was mit den vorstehend beschriebenen Nachteilen verbunden ist.Out DE 696 22 407 T2 a color changer is known in which two paint connections open via a respective color valve in a common color line, wherein the desired color is selected by a corresponding control of the color valves. In the case of a color change, however, the entire color line must also be rinsed here in order to free it from color residues of the previously applied ink, which is associated with the disadvantages described above.

Weiterhin sind sogenannte Doppelfarbwechsler bekannt, bei denen zwei unabhängig voneinander funktionsfähige Farbwechsler parallel geschaltet sind und ausgangsseitig über ein separates Steuerventil zusammengeführt werden. Bei einer derartigen Parallelschaltung zweier Farbwechsler weist jeder der beiden Farbwechsler eine eigene Farbleitung auf, so dass bei einem Farbwechsel auch nur einer der beiden Farbwechsler gespült werden muss. Nachteilig an derartigen Doppelfarbwechslern ist jedoch die Tatsache, dass das zu spülende Leitungsvolumen der Farbleitung zwischen dem jeweiligen Farbwechsler und dem nachgeschalteten Steuerventil aufgrund der baulichen Trennung relativ groß ist. Darüber hinaus ist der apparative Aufwand für derartige Doppelfarbwechsler unbefriedigend.Furthermore, so-called double color changer are known in which two independently operable color changer are connected in parallel and the output side are combined via a separate control valve. In such a parallel connection of two color changers, each of the two color changer has its own color line, so that when a color change, only one of the two color changer must be rinsed. A disadvantage of such double color changers, however, is the fact that the line volume to be flushed the color line between the respective color changer and the downstream control valve is relatively large due to the structural separation. In addition, the expenditure on equipment for such a double color changer is unsatisfactory.

Ferner sind aus EP 0 338 871 A1 , DE 197 42 588 A1 , DE 2 064 238 und DE 100 59 041 C2 ähnliche Farbwechselanordnungen bekannt, bei denen mehrere Farbwechsler parallel geschaltet sind und ausgangsseitig in einer Steuerventilanordnung zusammengeführt werden. Diese bekannten Farbwechselanordnungen weisen jedoch dieselben Nachteile auf wie der vorstehend beschriebene Doppelfarbwechsler.Furthermore, are off EP 0 338 871 A1 . DE 197 42 588 A1 . DE 2 064 238 and DE 100 59 041 C2 Similar color change arrangements are known in which a plurality of color changers are connected in parallel and are combined on the output side in a control valve arrangement. However, these known color changing arrangements have the same disadvantages as the double color changer described above.

Aus EP 1 134 027 A2 ist ferner ein herkömmlicher Farbwechsler bekannt, bei dem mehrere Farbanschlüsse in eine gemeinsame Farbleitung münden. Bei einem Farbwechsel muss hierbei also ebenfalls die gesamte Farbleitung gespült werden.Out EP 1 134 027 A2 Furthermore, a conventional color changer is known in which a plurality of color connections open into a common color line. In the case of a color change, therefore, the entire color line must also be rinsed here.

Aus US 4 375 865 ist eine Farbwechselanordnung bekannt, bei der jedoch sämtliche Farbanschlüsse in eine gemeinsame Farbleitung münden, die nur als Ganzes spülbar ist. Nachteilig an dieser bekannten Farbwechselanordnung ist also ebenfalls der relativ große Spülmittelverbrauch.Out U.S. 4,375,865 a color change arrangement is known in which, however, lead all paint connections in a common color line, which is flushable only as a whole. A disadvantage of this known color changing arrangement is therefore also the relatively large detergent consumption.

Ferner ist aus der nachveröffentlichen Druckschrift DE 102 11 244 A1 eine Lackieranlage bekannt.Furthermore, from the post-published document DE 102 11 244 A1 a painting known.

Schließlich ist aus US 4 302 481 eine Farbwechselanordnung bekannt, die aus mehreren Bauteilen besteht. Nachteilig an dieser Farbwechselanordnung ist also wiederum der relativ große bauliche Aufwand.Finally is off US 4,302,481 a color changing arrangement is known, which consists of several components. A disadvantage of this color change arrangement is therefore again the relatively large construction effort.

Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Farbwechsler zu schaffen, der bei einem Farbwechsel einen möglichst geringen Farb- und Spülmittelverbrauch aufweist.The invention is therefore an object of the invention to provide a color changer, which has the lowest possible color and detergent consumption in a color change.

Diese Aufgabe wird, ausgehend von dem eingangs beschriebenen bekannten Farbwechsler gemäß dem Oberbegriff des Anspruchs 1, durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved, starting from the known color changer described above according to the preamble of claim 1, by the characterizing features of claim 1.

Die Erfindung umfasst die allgemeine technische Lehre, die Beschichtungsmittelleitung bei einem Beschichtungsmittelwechsler in mindestens zwei Leitungsabschnitte aufzuteilen und dadurch das zu reinigende Volumen der Beschichtungsmittelleitung zu verringern.The invention comprises the general technical teaching of dividing the coating agent line in a coating agent changer into at least two line sections and thereby reducing the volume of the coating agent line to be cleaned.

Im Gegensatz zu den bekannten und eingangs beschriebenen Doppel- und Mehrfachfarbwechselanordnungen sind die einzelnen Leitungsabschnitte der Beschichtungsmittelleitung hierbei innerhalb des Beschichtungsmittelwechslers angeordnet. Die Beschichtungsmittelleitung ist also bei dem erfindungsgemäßen Beschichtungsmittelwechsler vorzugsweise intern, d.h. innerhalb des Beschichtungsmittelwechslers, in mehrere Leitungsabschnitte aufgeteilt.In contrast to the known and initially described double and multiple color change arrangements, the individual line sections of the coating agent line are in this case arranged within the coating medium changer. The coating agent line is therefore preferably internal to the coating agent changer according to the invention, i. within the coating agent changer, divided into several line sections.

Der erfindungsgemäße Beschichtungsmittelwechsler ist hierbei vorzugsweise als eigenständiges Bauteil ausgebildet, wohingegen die eingangs beschriebenen bekannten Doppel- und Mehrfachfarbwechselanordnungen aus einer Zusammenschaltung mehrerer eigenständiger Farbwechsler bestehen.The coating agent changer according to the invention is preferably designed as an independent component, whereas the known double and multiple color change arrangements described above consist of an interconnection of several independent color changers.

Vorzugsweise besteht die Beschichtungsmittelleitung aus mindestens zwei Leitungsabschnitten, in die für eine Zuführung von Beschichtungsmittel jeweils mehrere Beschichtungsmittelanschlüsse münden, wobei mindestens einer der einzelnen Leitungsabschnitte unabhängig von dem anderen Leitungsabschnitt spülbar ist. Bei einem Farbwechsel ist es dann nicht mehr erforderlich, die gesamte Beschichtungsmittelleitung zu spülen, wodurch der Verbrauch von Spülmittel und Lack bei einem Farbwechsel wesentlich verringert wird.Preferably, the coating medium line consists of at least two line sections, into each of which a plurality of coating agent connections open for a supply of coating agent, wherein at least one of the individual line sections can be flushed independently of the other line section. In a color change, it is then no longer necessary to rinse the entire coating agent line, whereby the consumption of detergent and paint is significantly reduced in a color change.

In einer Variante der Erfindung sind sämtliche Leitungsabschnitte der Beschichtungsmittelleitung jeweils unabhängig von den anderen Leitungsabschnitten spülbar. Dies kann beispielsweise dadurch erreicht werden, dass die einzelnen Leitungsabschnitte der Beschichtungsmittelleitung parallel geschaltet sind und an ihrem stromabwärts gelegenen Ende über ein Umschaltventil zusammengeführt werden. Diese Variante der Erfindung ist insbesondere dann gut geeignet, wenn die verschiedenen verwendeten Lacke ähnliche Nutzungshäufigkeiten aufweisen.In a variant of the invention, all line sections of the coating agent line can each be flushed independently of the other line sections. This can be achieved, for example, by connecting the individual line sections of the coating medium line in parallel and bringing them together at their downstream end via a changeover valve. This variant of the invention is particularly well suited when the different paints used have similar frequencies of use.

In einer anderen Variante der Erfindung ist dagegen nur einer der Leitungsabschnitte der Beschichtungsmittelleitung unabhängig von den anderen Leitungsabschnitten spülbar, wobei der unabhängig spülbare Leitungsabschnitt stromabwärts hinter dem anderen Leitungsabschnitt angeordnet ist. Diese Variante der Erfindung ist insbesondere dann gut geeignet, wenn die einzelnen zu verwendenden Lacke eine stark unterschiedliche Nutzungshäufigkeit aufweisen. Bei der Lackierung von Kraftfahrzeugkarosserieteilen werden beispielsweise sogenannte High-Runner-Farben relativ häufig verwendet, wohingegen sogenannte Low-Runner-Farben relativ selten benötigt werden. Die High-Runner-Farben werden in dieser Variante der Erfindung vorzugsweise dem Leitungsabschnitt der Beschichtungsmittelleitung zugeführt, der unabhängig von dem anderen Leitungsabschnitt spülbar ist, wohingegen die seltener verwendeten Low-Runner-Farben dem Leitungsabschnitt der gemeinsamen Beschichtungsmittelleitung zugeführt werden, der nur gemeinsam mit dem anderen Leitungsabschnitt der Beschichtungsmittelleitung gespült werden kann.In contrast, in another variant of the invention, only one of the line sections of the coating medium line can be flushed independently of the other line sections, wherein the independently flushable line section is arranged downstream of the other line section. This variant of the invention is particularly well suited if the individual paints to be used have a very different frequency of use. In the painting of motor vehicle body parts, for example, so-called high-runner colors are used relatively frequently, whereas so-called low-runner colors are required relatively rarely. The high-runner colors are preferably supplied in this variant of the invention, the line section of the coating medium line, which is irrigated independently of the other line section, whereas the less frequently used low-runner colors are supplied to the line section of the common coating agent line, which only together with the other line section of the coating medium line can be rinsed.

Diese Variante der Erfindung mit nur einem spülbaren Leitungsabschnitt kann beispielsweise dadurch realisiert werden, dass die einzelnen Leitungsabschnitte der Beschichtungsmittelleitung in Strömungsrichtung hintereinander angeordnet sind und ineinander übergehen, was strömungstechnisch auch als Reihenschaltung der einzelnen Leitungsabschnitte bezeichnet werden kann.This variant of the invention with only one flushable line section can be realized for example by the fact that the individual line sections of the coating agent line are arranged one behind the other in the flow direction and merge into each other, which fluidly also can be referred to as a series connection of the individual line sections.

Bei einer derartigen Reihenschaltung der einzelnen Leitungsabschnitte der Beschichtungsmittelleitung ist vorzugsweise zwischen den einzelnen Leitungsabschnitten ein Absperrventil angeordnet, um die einzelnen Leitungsabschnitte voneinander zu trennen und dadurch eine getrennte Spülung zu ermöglichen.In such a series connection of the individual line sections of the coating medium line, a shut-off valve is preferably arranged between the individual line sections in order to separate the individual line sections from one another and thereby permit separate flushing.

Hierbei mündet zwischen den einzelnen Leitungsabschnitten vorzugsweise ein Spülmittelanschluss in die Beschichtungsmittelleitung, um die Leitungsabschnitte unabhängig voneinander spülen zu können.In this case, a rinsing agent connection preferably leads into the coating agent line between the individual line sections in order to be able to rinse the line sections independently of one another.

Vorzugsweise ist hierbei an dem stromaufwärts gelegenen Ende der Beschichtungsmittelleitung ein weiterer Spülmittelanschluss vorgesehen, der in die Beschichtungsmittelleitung mündet. Bei einer vollständigen Spülung der gesamten Beschichtungsmittelleitung wird das Spülmittel dann vorzugsweise über den Spülmittelanschluss zugeführt, der an dem stromaufwärts gelegenen Ende der Beschichtungsmittelleitung angeordnet ist. Bei einer alleinigen Spülung des stromabwärts gelegenen Leitungsabschnitts der Beschichtungsmittelleitung wird das Spülmittel dagegen vorzugsweise über den Spülmittelanschluss zugeführt, der zwischen den beiden Leitungsabschnitten angeordnet ist.In this case, a further flushing agent connection, which opens into the coating agent line, is preferably provided at the upstream end of the coating agent line. In a complete flushing of the entire coating agent line, the rinsing agent is then preferably supplied via the rinse agent connection, which is arranged at the upstream end of the coating agent line. On the other hand, in the case of a sole flushing of the downstream line section of the coating agent line, the flushing agent is preferably supplied via the flushing agent connection, which is arranged between the two line sections.

Darüber hinaus ist vorzugsweise ein Rückführanschluss vorgesehen, um Beschichtungsmittelreste aus der Beschichtungsmittelleitung zurückzuführen, wobei der Rückführanschluss vorzugsweise zwischen den einzelnen Leitungsabschnitten in die Beschichtungsmittelleitung mündet, um eine Rückführung von Beschichtungsmittelresten auch dann zu ermöglichen, wenn nur einer der Leitungsabschnitte der Beschichtungsmittelleitung gespült wird.In addition, a return port is preferably provided to return coating agent residues from the coating agent line, wherein the return port preferably opens between the individual line sections in the coating agent line, to allow recycling of coating residues even if only one of the line sections of the coating agent line is rinsed.

Vorzugsweise ist neben diesem Rückführanschluss noch ein weiterer Rückführanschluss vorgesehen, der an dem stromaufwärts gelegenen Ende der Beschichtungsmittelleitung in die Beschichtungsmittelleitung mündet.Preferably, in addition to this return port, a further return port is provided, which opens at the upstream end of the coating agent line in the coating agent line.

In einer anderen Variante der Erfindung sind die einzelnen Leitungsabschnitte der Beschichtungsmittelleitung jedoch nicht in Reihe geschaltet, sondern verlaufen strömungstechnisch parallel und sind stromabwärts zusammengeführt, wobei die einzelnen parallelen Leitungsabschnitte der Beschichtungsmittelleitung vorzugsweise in ein Umschaltventil münden, das einen der Leitungsabschnitte auswählt.In another variant of the invention, however, the individual line sections of the coating agent line are not connected in series, but run fluidically parallel and are merged downstream, the individual parallel line sections of the coating medium line preferably lead to a switching valve that selects one of the line sections.

In einer vorteilhaften Ausführungsform dieser Variante sind die parallel geführten Leitungsabschnitte der Beschichtungsmittelleitung auch an ihrem stromaufwärts gelegenen Ende zusammen geführt, wozu vorzugsweise ein weiteres Umschaltventil verwendet wird. Dies ist sinnvoll, um bei einer bidirektionalen Spülung der einzelnen Leitungsabschnitte der Beschichtungsmittelleitung jeweils den gewünschten Leitungsabschnitt auswählen zu können.In an advantageous embodiment of this variant, the parallel guided line sections of the coating agent line are also brought together at their upstream end, for which purpose preferably a further changeover valve is used. This is useful in order to be able to select the desired line section in each bidirectional flushing of the individual line sections of the coating agent line.

Darüber hinaus weist der erfindungsgemäße Beschichtungsmittelwechsler vorzugsweise einen Pulsluftanschluss auf, der stromabwärts hinter den getrennt geführten Leitungsabschnitten und/oder an dem stromabwärts gelegenen Ende der Beschichtungsmittelleitung angeordnet sein kann und in die Beschichtungsmittelleitung mündet.In addition, the coating medium changer according to the invention preferably has a pulse air connection, which can be arranged downstream of the separately guided line sections and / or at the downstream end of the coating line and opens into the coating medium line.

Ferner ist auch bei einer Parallelschaltung der getrennten Leitungsabschnitte vorzugsweise mindestens ein Rückführanschluss vorgesehen, der stromaufwärts vor den getrennt geführten Leitungsabschnitten und/oder an dem stromaufwärts gelegenen Ende der Beschichtungsmittelleitung in die Beschichtungsmittelleitung mündet, um Beschichtungsmittelreste aus der Beschichtungsmittelleitung zurückzuführen.Furthermore, even with a parallel connection of the separate line sections, preferably at least one return connection is provided is provided upstream of the separately routed line sections and / or at the upstream end of the coating agent line into the coating agent line to return coating residues from the coating agent line.

Die Erfindung ist nicht auf einen Beschichtungsmittelwechsler als eigenständiges Bauteil beschränkt, sondern umfasst auch eine Beschichtungsanlage mit einem derartigen Beschichtungsmittelwechsler.The invention is not limited to a coating agent changer as an independent component, but also includes a coating system with such a coating agent changer.

Darüber hinaus ist zu erwähnen, dass die Erfindung nicht auf solche Beschichtungsmittelwechsler beschränkt ist, die eine Beschichtungsmittelleitung mit nur zwei getrennten Leitungsabschnitten aufweisen. Es ist vielmehr auch möglich, die Beschichtungsmittelleitung in mehr als zwei Leitungsabschnitte aufzuteilen, um die Lack- und Spülmittelverluste beim Farbwechsel weiter zu minimieren.In addition, it should be noted that the invention is not limited to those coating medium changers which have a coating medium line with only two separate line sections. Rather, it is also possible to divide the coating agent line into more than two line sections in order to further minimize paint and flushing agent losses during the color change.

Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet oder werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführungsbeispiele anhand der Zeichnungen näher erläutert. Es zeigen:

Figur 1
eine schematische Darstellung einer Beschichtungsanlage mit einem erfindungsgemäßen Farbwechsler,
Figur 2
eine Detaildarstellung des Farbwechslers aus Figur 1 mit einer Reihenschaltung von zwei Leitungsabschnitten,
Figur 3
ein alternatives Ausführungsbeispiel eines Farbwechslers mit zwei getrennt spülbaren parallelen Leitungsabschnitten, sowie
Figur 4
ein weiteres Ausführungsbeispiel eines Farbwechslers mit zwei parallelen Leitungsabschnitten.
Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred embodiments with reference to the drawings. Show it:
FIG. 1
a schematic representation of a coating system with a color changer according to the invention,
FIG. 2
a detailed representation of the color changer FIG. 1 with a series connection of two line sections,
FIG. 3
an alternative embodiment of a color changer with two separately flushable parallel line sections, as well
FIG. 4
a further embodiment of a color changer with two parallel line sections.

Die in Figur 1 gezeigte Beschichtungsanlage kann beispielsweise zur Lackierung von Kraftfahrzeugkarosserieteilen verwendet werden und weist als Applikationsgerät einen Rotationszerstäuber 1 auf.In the FIG. 1 coating system shown can be used, for example, for painting automotive body parts and has a rotary atomizer 1 as an application device.

Zur Kurzspülung des Rotationszerstäubers 1 ist dieser eingangsseitig über ein Absperrventil 2 und einen manuellen Druckregler 3 mit einer Spülmittelleitung 4 verbunden.For brief rinsing of the rotary atomizer 1 this is connected on the input side via a shut-off valve 2 and a manual pressure regulator 3 with a detergent line 4.

Für eine Zuführung von Lack ist der Rotationszerstäuber 1 eingangsseitig über eine Dosierpumpe 5 mit einem Farbwechsler 6 verbunden, der eine von insgesamt 20 möglichen Farben F1-F20 auswählt und dem Rotationszerstäuber 1 zuführt, wobei der Farbwechsler 6 in Figur 2 dargestellt ist und noch detailliert beschrieben wird.For a supply of paint, the rotary atomizer 1 is connected on the input side via a metering pump 5 with a color changer 6, which selects one of a total of 20 possible colors F1-F20 and the rotary atomizer 1 feeds, the color changer 6 in FIG. 2 is shown and will be described in detail.

Zur Umgehung der Dosierpumpe 5 ist weiterhin ein Bypass-Ventil 7 vorgesehen.To bypass the metering pump 5, a bypass valve 7 is further provided.

Zur Spülung der Dosierpumpe 5 ist diese eingangsseitig über ein Spülventil 8 mit der Spülmittelleitung 4 verbunden.For flushing the metering pump 5, this is the input side connected via a flush valve 8 with the detergent line 4.

Im Folgenden wird nun anhand von Figur 2 der Aufbau des Farbwechslers 6 detailliert beschrieben.The following will now be based on FIG. 2 the structure of the color changer 6 described in detail.

Der Farbwechsler 6 ist modular aufgebaut und erweiterbar, um die Zahl der wählbaren Farben an die jeweiligen Bedürfnisse des Einsatzgebietes anpassen zu können. Hierzu weist der Farbwechsler 6 mehrere Blöcke 9, 10.1-10.7, 11, 12.1-12.3 und 13 auf, wobei die einzelnen Blöcke 9, 10.1-10.7, 11, 12.1-12.3 und 13 mit einer gemeinsamen Farbleitung 14 verbunden sind und den Zufluss in die Farbleitung 14 oder den Abfluss aus der Farbleitung 14 über Farbsteuerventile FV steuern.The color changer 6 is modular and expandable to adapt the number of selectable colors to the particular needs of the application can. For this purpose, the color changer 6 a plurality of blocks 9, 10.1-10.7, 11, 12.1-12.3 and 13, wherein the individual blocks 9, 10.1-10.7, 11, 12.1-12.3 and 13 are connected to a common paint line 14 and control the inflow into the paint line 14 or the outflow from the paint line 14 via color control valves FV.

Die Blöcke 10.1-10.7 dienen hierbei zur Steuerung sogenannter Low-Runner-Farben F1-F14, die relativ selten verwendet werden, wohingegen die Blöcke 12.1-12.3 zur Steuerung sogenannter High-Runner-Farben F15-F20 dienen, die relativ häufig verwendet werden.Blocks 10.1-10.7 serve to control so-called low-runner colors F1-F14, which are used relatively rarely, whereas blocks 12.1-12.3 serve to control so-called high-runner colors F15-F20, which are used relatively frequently.

Der Block 9 dient dagegen zur Zuführung von Spülmittel V1 über ein Spülmittelventil SV1 und zur Rückführung von Farbresten aus der Farbleitung 14 bei einem Farbwechsel, wobei die Rückführung von einem Rückführventil RV1 gesteuert wird.Block 9, on the other hand, serves for supplying rinsing agent V1 via a rinsing agent valve SV1 and for returning color rests from ink duct 14 during a color change, wherein the return is controlled by a return valve RV1.

Der an dem stromabwärts gelegenen Ende der Farbleitung 14 angeordnete Block 13 ermöglicht dagegen die Zufuhr von Pulsluft PL1 über ein Pulsluftventil PV und ein Rückschlagventil 15.On the other hand, the block 13 arranged at the downstream end of the paint line 14 enables the supply of pulse air PL1 via a pulse air valve PV and a check valve 15.

Der zwischen den Blöcken 10.1-10.7 der Low-Runner-Farben F1-F14 und den Blöcken 12.1-12.3 der High-Runner-Farben F15-F20 angeordnete Block 11 hat zum einen die Aufgabe, die Farbleitung 14 in zwei Leitungsabschnitte 14.1, 14.2 zu unterteilen, wobei der stromabwärts gelegene und für die High-Runner-Farben F15-F20 verwendete Leitungsabschnitt 14.1 der Farbleitung 14 unabhängig von dem stromaufwärts gelegenen Leitungsabschnitt 14.2 der Farbleitung 14 spülbar ist. Hierzu weist der Block 11 ein Absperrventil 16 auf, das zwischen den beiden Leitungsabschnitten 14.1 und 14.2 der Farbleitung 14 angeordnet ist.The block 11 arranged between the blocks 10.1-10.7 of the low-runner colors F1-F14 and the blocks 12.1-12.3 of the high-runner colors F15-F20 has, on the one hand, the task of color line 14 into two line sections 14.1, 14.2 subdivide, wherein the downstream and used for the high-runner colors F15-F20 line section 14.1 of the color line 14 is irrigated independently of the upstream line section 14.2 of the color line 14. For this purpose, the block 11 has a shut-off valve 16 which is arranged between the two line sections 14.1 and 14.2 of the color line 14.

Darüber hinaus ist in dem Block 11 ein weiterer Spülmittelanschluss mit einem Spülmittelventil SV2 und ein weiterer Rückführanschluss mit einem Rückführventil RV2 angeordnet, so dass der stromabwärts gelegene Leitungsabschnitt 14.1 komplett unabhängig von dem stromaufwärts gelegenen Leitungsabschnitt 14.2 der Farbleitung gereinigt werden kann.In addition, in the block 11, a further flushing agent connection with a flushing valve SV2 and a further return connection with a return valve RV2 arranged, so that the downstream line section 14.1 can be cleaned completely independently of the upstream line section 14.2 of the color line.

Durch diese Unterteilung der Farbleitung 14 in zwei Leitungsabschnitte 14.1 und 14.2 werden die bei einem Farbwechsel auftretenden Farb- und Spülmittelverluste wesentlich verringert.As a result of this subdivision of the color line 14 into two line sections 14.1 and 14.2, the color and detergent losses occurring during a color change are substantially reduced.

Schließlich ist zu Figur 2 noch zu erwähnen, dass ein Reserveanschluss RE vorgesehen ist, der in dem hier dargestellten Ausführungsbeispiel nicht benötigt wird.Finally it is closed FIG. 2 to mention that a backup terminal RE is provided, which is not needed in the embodiment shown here.

Das in Figur 3 dargestellte alternative Ausführungsbeispiel eines Farbwechslers 6' stimmt weitgehend mit dem vorstehend beschriebenen und in Figur 2 dargestellten Ausführungsbeispiel überein, so dass zur Vermeidung von Wiederholungen auf vorstehende Beschreibung zu Figur 2 verwiesen wird und im Folgenden für entsprechende Bauteile dieselben Bezugszeichen verwendet werden, die lediglich zur Vermeidung von Wiederholungen durch einen Apostroph gekennzeichnet sind.This in FIG. 3 illustrated alternative embodiment of a color changer 6 'is largely consistent with that described above and in FIG. 2 illustrated embodiment, so that to avoid repetition of the above description FIG. 2 and reference is made in the following for corresponding components, the same reference numerals, which are characterized only to avoid repetition by an apostrophe.

Eine Besonderheit des Farbwechslers 6' besteht darin, dass die Farbleitung 14' in zwei Leitungsabschnitte 14.1', 14.2' unterteilt ist, die strömungstechnisch parallel geschaltet sind. Dies bietet den Vorteil, dass die beiden Leitungsabschnitte 14.1' und 14.2' beide unabhängig voneinander spülbar sind. Hierzu ist stromaufwärts vor dem Block 10.1' und stromabwärts hinter dem Block 12.3' jeweils ein weiterer Block 16, 17 angeordnet, der eine Auswahl eines der beiden Leitungsabschnitte 14.1' oder 14.2' ermöglicht. Hierzu weisen die beiden Blöcke 16, 17 jeweils zwei Absperrventile auf, die als 2/2-Wege-Ventile ausgeführt sind und zusammen als Umschaltventil wirken.A special feature of the color changer 6 'is that the color line 14' in two line sections 14.1 ', 14.2' is divided, which are connected in parallel flow. This offers the advantage that the two line sections 14.1 'and 14.2' are both independently flushable. For this purpose, upstream of the block 10.1 'and downstream of the block 12.3' in each case a further block 16, 17 is arranged, which allows a selection of one of the two line sections 14.1 'or 14.2'. For this purpose, the two blocks 16, 17 each have two shut-off valves, which are designed as 2/2-way valves and together act as a changeover valve.

Das in Figur 4 dargestellte alternative Ausführungsbeispiel eines Farbwechslers 6" stimmt weitgehend mit dem vorstehend beschriebenen und in Figur 3 dargestellten Ausführungsbeispiel überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird und für entsprechende Bauteile dieselben Bezugszeichen verwendet werden, die lediglich zur Vermeidung von Wiederholungen durch zwei Apostrophe gekennzeichnet sind.This in FIG. 4 illustrated alternative embodiment of a color changer 6 "is largely consistent with that described above and in FIG. 3 illustrated embodiment, so reference is made to avoid repetition of the above description and the same reference numerals are used for corresponding components, which are characterized only to avoid repetition by two apostrophes.

Ein Unterschied des Farbwechslers 6" gegenüber dem in Figur 2 gezeigten Farbwechsler 6' besteht darin, dass die beiden getrennten Leitungsabschnitte 14.1", 14.2" der Farbleitung 14" nur stromabwärts zusammen geführt sind, wohingegen die Leitungsabschnitte 14.1" und 14.2" stromaufwärts getrennt sind.A difference of the color changer 6 "compared to in FIG. 2 shown color changer 6 'is that the two separate line sections 14.1 ", 14.2" of the color line 14 "are performed together only downstream, whereas the line sections 14.1" and 14.2 "upstream are separated.

Aus diesem Grund weist der stromaufwärts gelegene Block 9" zwei Spülmittelanschlüsse zur Zuführung von Spülmittel in die beiden Leitungsabschnitte 14.1" und 14.2" auf.For this reason, the upstream block 9 "has two flushing agent connections for supplying flushing agent into the two line sections 14.1" and 14.2 ".

Entsprechend weist der Block 17" zwei Pulsluftventile PV1, PV2 auf, die über jeweils ein Rückschlagventil 15.1", 15.2" mit einer Pulsluftleitung verbunden sind.Accordingly, the block 17 "two pulse air valves PV1, PV2, which are connected via a respective check valve 15.1", 15.2 "with a pulsed air line.

Die Erfindung ist nicht auf die vorstehend beschriebenen bevorzugten Ausführungsbeispiele beschränkt. Vielmehr ist eine Vielzahl von Varianten und Abwandlungen möglich, die ebenfalls von dem Erfindungsgedanken Gebrauch machen und deshalb in den Schutzbereich fallen.The invention is not limited to the preferred embodiments described above. Rather, a variety of variants and modifications is possible, which also make use of the inventive idea and therefore fall within the scope.

Claims (18)

  1. Coating medium changer (6, 6', 6") as independent component, in particular colour changer for a painting installation, with a plurality of coating medium connections for the supply of different coating media (Fl to F20), wherein the individual coating medium connections open into a coating medium line (14, 14'), characterised in that the coating medium line (14, 14') has at least two line portions (14.1, 14.1', 14.1", 14.2, 14.2', 14.2") into which a plurality of coating medium connections open in each case, wherein at least one of the line portions (14.1, 14.1', 14.1 ", 14.2, 14.2', 14.2") can be rinsed independently of the other line portion (14.1, 14.1', 14.1 ", 14.2, 14.2', 14.2").
  2. Coating medium changer (6, 6', 6") as claimed in Claim 1, characterised in that all the line portions (14.1', 14.1 ", 14.2', 14.2") of the coating medium line can in each case be rinsed independently of the other line portions.
  3. Coating medium changer (6, 6', 6") as claimed in Claim 1, characterised in that only one of the line portions (14.1, 14.2) of the coating medium line (14) can be rinsed independently of the other line portion (14.2), wherein the line portion (14.1) which can be rinsed independently is disposed downstream after the other line portion (14.2).
  4. Coating medium changer (6, 6', 6") as claimed in any one of the preceding claims, characterised in that the individual line portions (14.1', 14.1", 14.2', 14.2") of the coating medium line (14') are disposed one after the other and merge into one another.
  5. Coating medium changer (6, 6', 6") as claimed in Claim 4, characterised in that a shutoff valve (16) is preferably disposed between the individual line portions (14.1, 14.2) of the coating medium line (14).
  6. Coating medium changer (6, 6', 6") as claimed in Claim 4, characterised in that a first rinsing medium connection opens into the coating medium line between the individual line portions (14.1, 14.2) of the coating medium line (14) in order to be able to rinse the line portions (14.1, 14.2) independently of one another.
  7. Coating medium changer (6, 6', 6") as claimed in any one of the preceding claims, characterised in that a second rinsing medium connection opens into the coating medium line (14) at the upstream end of the coating medium line (14).
  8. Coating medium changer (6, 6', 6") as claimed in any one of Claims 4 to 7, characterised in that a first return connection opens into the coating medium line (14) between the individual line portions (14.1, 14.2) of the coating medium line in order to return residues of coating medium from the coating medium line (14).
  9. Coating medium changer (6, 6', 6") as claimed in any one of Claims 4 to 8, characterised in that a second return connection opens into the coating medium line at the upstream end of the coating medium line (14) in order to return residues of coating medium from the coating medium line (14).
  10. Coating medium changer (6, 6', 6") as claimed in Claim 1, characterised in that the individual line portions (14.1', 14.1 ", 14.2', 14.2") of the coating medium line are brought together downstream.
  11. Coating medium changer (6, 6', 6") as claimed in Claim 10, characterised in that the individual line portions (14.1', 14.1", 14.2', 14.2") of the coating medium line are brought together downstream by way of a first changeover valve (17'), wherein the first changeover valve (17') selects a line portion (14.1', 14.2') of the coating medium line (14').
  12. Coating medium changer (6, 6', 6") as claimed in Claim 10 or 11, characterised in that the individual line portions (14.1', 14.2') of the coating medium line (14') are brought together upstream.
  13. Coating medium changer (6, 6', 6") as claimed in Claim 12, characterised in that the individual line portions (14.1', 14.2') of the coating medium line (14') are brought together upstream, by way of a second changeover valve (16), wherein the second changeover valve (16) selects a line portion (14.1', 14.2') of the coating medium line (14').
  14. Coating medium changer (6, 6', 6") as claimed in any one of the preceding claims, characterised in that a pulsed air connection opens into the coating medium line downstream after the separate line portions (14.1', 14.1 ", 14.2', 14.2") and/or at the downstream end of the coating medium line.
  15. Coating medium changer (6, 6', 6") as claimed in any one of the preceding claims, characterised in that a return connection opens upstream before the separate line portions (14.1, 14.1', 14.1 ", 14.2, 14.2', 14.2") and/or opens into the coating medium line (14, 14') at the upstream end of the coating medium line (14, 14') in order to return residues of coating medium from the coating medium line (14, 14').
  16. Coating medium changer (6, 6', 6") as claimed in any one of the preceding claims, characterised in that coating medium connections for frequently used coating media open into one line portion (14.1), whilst coating medium connections for rarely used coating media open into the other line portion (14.2).
  17. Coating installation with a coating medium changer (6, 6', 6") as claimed in any one of the preceding claims.
  18. Coating installation as claimed in Claim 17, characterised in that the coating media supplied to the coating medium changer (6, 6', 6") via the coating medium connection have predetermined frequencies of use, wherein the frequencies of use of the coating media supplied to the line portion which can be rinsed independently amount in total to more than 65%, whereas the frequencies of use of the coating media supplied to the other line portion amount in total to less than 35%
EP04016003A 2003-08-01 2004-07-07 Coating material changer Active EP1502657B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335358 2003-08-01
DE10335358A DE10335358A1 (en) 2003-08-01 2003-08-01 Coating agents changer

Publications (3)

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EP1502657A2 EP1502657A2 (en) 2005-02-02
EP1502657A3 EP1502657A3 (en) 2005-07-13
EP1502657B1 true EP1502657B1 (en) 2008-10-08

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EP04016003A Active EP1502657B1 (en) 2003-08-01 2004-07-07 Coating material changer

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EP (1) EP1502657B1 (en)
AT (1) ATE410239T1 (en)
DE (2) DE10335358A1 (en)
ES (1) ES2314318T3 (en)

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Publication number Priority date Publication date Assignee Title
DE202006021283U1 (en) 2005-10-07 2014-08-27 Dürr Systems GmbH Coating material supply device
DE102006022570A1 (en) 2006-05-15 2007-11-29 Dürr Systems GmbH Coating device and associated operating method
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
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
RU2427432C2 (en) 2006-12-12 2011-08-27 Дюрр Системз Гмбх Coat applier with metering device
EP2268415B1 (en) 2008-03-20 2015-05-06 Dürr Systems GmbH Painting robot and associated operating method
DE102008015494A1 (en) 2008-03-25 2009-10-01 Dürr Systems GmbH Paint application robot e.g. for motor vehicle body-work, uses atomizer for painting interior surfaces of motor vehicle
DE102008015258B4 (en) 2008-03-20 2023-05-25 Dürr Systems Ag Color changer for a painting robot
DE102008037035B4 (en) 2008-08-08 2023-05-25 Dürr Systems Ag Valve arrangement of a painting robot
DE102009031180A1 (en) * 2009-06-29 2010-12-30 Magna Steyr Fahrzeugtechnik Ag & Co Kg Workpiece i.e. vehicle body, coating device, has mixing device or additional mixing device connected with dosing pump for color and/or effect material by line for mixing color and/or effect material with basic clear coating material
DE102015010158A1 (en) * 2015-07-03 2017-01-05 Dürr Systems Ag Application device, in particular rotary atomizer
CN111921734B (en) * 2020-08-28 2023-11-28 深圳远荣智能制造股份有限公司 Fluid pipeline paint supply system and method for automatic color-changing metering spraying

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FR2441435A1 (en) * 1978-11-14 1980-06-13 Gema Ag PROJECTION METHOD AND DEVICE, PARTICULARLY FOR COATING OBJECTS WITH POWDER
US4375865A (en) * 1980-08-12 1983-03-08 Binks Manufacturing Company Color change system for spray coating apparatus
FR2628657B1 (en) * 1988-03-16 1990-07-13 Peugeot PILOT PLANT FOR PAINT SPRAYING OR THE LIKE, WITH FREQUENT COLOR CHANGE, ESPECIALLY FOR THE AUTOMOTIVE INDUSTRY
SE504472C2 (en) * 1995-06-22 1997-02-17 Abb Flexible Automation As Color feeding system for spray painting robot
DE19742588B4 (en) * 1997-09-26 2009-02-19 Dürr Systems GmbH Method for serial coating of workpieces
DE19951956A1 (en) * 1999-10-29 2001-06-13 Duerr Systems Gmbh Valve assembly and method for flushing a color changer
JP3803034B2 (en) * 2000-03-15 2006-08-02 株式会社大気社 Painting equipment
DE10059041C2 (en) * 2000-11-28 2002-11-14 Lactec Ges Fuer Moderne Lackte Method and device for conveying electrically conductive paints between different voltage potentials
DE10211244A1 (en) * 2002-03-13 2003-10-23 Lactec Ges Fuer Moderne Lackte Painting system for applying liquid coating material

Also Published As

Publication number Publication date
ATE410239T1 (en) 2008-10-15
DE502004008184D1 (en) 2008-11-20
ES2314318T3 (en) 2009-03-16
EP1502657A2 (en) 2005-02-02
DE10335358A1 (en) 2005-03-10
EP1502657A3 (en) 2005-07-13

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