EP0842706B1 - Beschichtungsanlage und Verfahren zum Steuern des Materialflusses in der Anlage - Google Patents
Beschichtungsanlage und Verfahren zum Steuern des Materialflusses in der Anlage Download PDFInfo
- Publication number
- EP0842706B1 EP0842706B1 EP97119659A EP97119659A EP0842706B1 EP 0842706 B1 EP0842706 B1 EP 0842706B1 EP 97119659 A EP97119659 A EP 97119659A EP 97119659 A EP97119659 A EP 97119659A EP 0842706 B1 EP0842706 B1 EP 0842706B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- ring main
- downstream
- shutoff
- point
- 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
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/035—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material to several spraying apparatus
Definitions
- the invention relates to a method for automatic control the material flow in a coating system Series coating of workpieces and a corresponding one Coating line according to the generic term of the independent Claims.
- a typical application example for this is the automatic one Paint supply for painting systems for serial coating of Workpieces such as Motor vehicle bodies, which as Loop color circulation systems are designed to be as possible largely the deposition of the paint during coating breaks to avoid.
- the well-known cabin ring line systems consist of a feed line from each color Paint container and the feed pump in the paint mixing room Paint booth and a return line from the paint booth via an adjustable return control valve back to Paint container. With the pressure difference between the outlet the feed pump and the adjustable return control valve a continuous color circulation is created.
- Paint booths are usually multiple atomizers or other coating devices distributed for the several Ink acceptance or connection points (so-called ink niches) different locations along the cabin are provided.
- the automatic coating machines such as.
- the invention has for its object a method and to specify a coating system that stops the Coating material easier and with less construction and Avoid energy expenditure than before.
- FIG. 1A shows a known ink supply system with a Ring line 1, coming from a supply system 2 and circulating coating material flowing back there.
- the supply system can e.g. in a color mixing room are located.
- a branch line 3 branches off from the ring line 1, via a control valve to the coating device 4 leads.
- FIG. 1B shows the alternative possibility mentioned above with a main line 6 coming from the supply system 2, from the branches a feed line 7, which over the illustrated Valve arrangement on the one hand with the coating device 4 and on the other hand with one back into the supply system 2 leading return line 8 is connectable. Over in the Main line 6 and the return line 8 switched pre-pressure or. Return regulator can provide the required operating pressure can be set.
- a single complete ring line 10 is present, which is fed by a supply system 2 as before, and from the at the connection point 11 a feed line 12 to the Valve arrangement 13 of the coating device 14 leads.
- the feed line 12 is here for example via a valve of the arrangement 13 with a separate return line 15 connected to or downstream behind a shut-off point of the ring line 10 in this ends.
- the shut-off point is a downstream of the Junction 11 switched into the ring line automatically controlled shut-off valve 16 is formed.
- the shut-off valve 16 is open, so that the coating material continuously through the Ring line 10 from and back to the supply system 2 circulates and the part of the material required for spraying due to the working pressure in the ring line through the valve arrangement 13 to the coating device 14 flows.
- valve 16 In the coating breaks, however, the ring line on the Blocking point blocked by valve 16. At the same time when the coating device 14 is blocked, the path from the Feed line 12 to the return line 15 and from this in the unlocked part of the ring line 10 behind the Valve 16 released so that the coating material constantly through the feed line 12 and now also through the Return line 15 flows and can not settle.
- the Valve 16 is actuated by a control signal.
- FIG. 3 shows a typical coating system for Series coating of motor vehicle bodies shown.
- she contains (per color) a ring line 20 in the form of a one Paint booth 21 pipeline routed to a (here supply system (not shown) is connected.
- the Paint booth contains in the example shown in the indicated by the arrow 23 conveying direction of the bodies
- Six in a row consisting of hand spray guns Coating devices 25, six electrostatically working Coating devices 26 (e.g. rotary atomizers), further coating devices 27 on a roof machine, three consisting of automatic air atomizers Devices 28 and two other manually operated Coating devices 29.
- the Coating devices other than devices 27 and one device 28, as usual, each on the two Cabin sides distributed.
- the automatic motion machines moving coating devices are directly on the Cabin wall arranged.
- the respective color changers are located in the immediate vicinity of the coating devices, for example in the machine arm of the motion machines or in "Roof bars" of the roof machine to prevent paint and solvent losses reduced to a minimum when changing colors.
- Each of the branches branched from the main circulation or ring line 20 Feed lines 32 is on the (not shown) Valve arrangement of the coating arrangement to which it leads, for example via an automatically controlled valve Valve arrangement connected to a line 34, which in a separate return line 35 common to all lines 34 leads, which in turn on the shutoff valve 36 downstream opens into the ring line 20 behind the shut-off point.
- the outgoing lines 32 ' Valves and lines 34 'to one of these lines 34' shared separate return line 35 'connected to the shut-off valve 37 downstream behind this shut-off point opens into the ring line 20.
- coating devices 26 and 28 can lead to several atomizers feed lines fed by a common feed line 32 or 32 ' and in parallel to that coming from these atomizers Lines 34 and 34 'via a common line be connected to the return line 35 or 35 '.
- valve arrangements mentioned Coating devices can include the color changer or be connected to a color changer with which the relevant coating device selectively over their Supply and return lines with the ring line for the desired color can be connected.
- the supply and return lines can be advantageous e.g. consist of relatively simple hoses that are easy are controllable and not in contrast to the ring line 20 lead the entire cabin around.
- the check valves 36 and 37 can simultaneously and can be controlled in the same direction by a common control signal, however there are other control options. You can be designed as a switchable multi-way valve that in your one switching state releases the ring line 20 and in the other Switching status blocks the ring line and at the same time a way for the return line 35 directly connected to the valve or 35 'in the respective unlocked part of the Ring line opens.
- shut-off points in the ring line can also be provided.
- the shut-off valves of the Ring line not during the entire break times of the Coating closed and the paths of the return lines be open, e.g. not if the coating company is interrupted for a long time.
Landscapes
- Spray Control Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Nozzles (AREA)
Description
Anhand der Zeichnung wird die Erfindung näher erläutert. Es zeigen:
- Fig. 1A und 1B
- zwei nicht der Erfindung entsprechende Systeme;
- Fig. 2
- eine schematische Darstellung zur Erläuterung des Prinzips der Erfindung; und
- Fig. 3
- eine schematische Darstellung einer typischen Ausführungsform einer erfindungsgemäßen Beschichtungsanlage.
Claims (9)
- Verfahren zum automatischen Steuern des Materialflusses in einer Beschichtungsanlage zur Serienbeschichtung von Werkstücken, in der das Beschichtungsmaterial während des Beschichtungsbetriebes durch eine Ringleitung (10, 20) zirkuliert, aus der es an einer oder mehreren Anschlußstellen durch je eine Hinlaufleitung (12, 32, 32') zu einer Beschichtungsvorrichtung (14, 25 - 29) geleitet wird,
dadurch gekennzeichnet, daß zumindest während eines Teils der Beschichtungspausen die Ringleitung (10, 20) stromabwärts der An'schlußstelle oder Anschlußstellen gesperrt und das Beschichtungsmaterial aus der jeweiligen Hinlaufleitung (12, 32, 32') durch eine separate Rücklaufleitung (15, 35, 35') hinter der Sperrstelle wieder in die Ringleitung (10, 20) zurückgeleitet wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß in den Beschichtungspausen die Ringleitung (20) an einer stromabwärts hinter der Sperrstelle (36) gelegenen zweiten Stelle (37) gesperrt wird und das aus der separaten Rücklaufleitung (35) kommende Beschichtungsmaterial stromabwärts hinter der ersten Sperrstelle (36) in zwischen den beiden Sperrstellen (36, 37) aus der Ringleitung (20) zu weiteren Beschichtungsvorrichtungen führende Hinlaufleitungen (32') geleitet und von dort hinter der zweiten Sperrstelle (37) in die Ringleitung (20) zurückgeleitet wird.
- Beschichtungsanlage zur Serienbeschichtung von Werkstücken mit einer an ein Versorgungssystem (2) angeschlossenen Ringleitung (10, 20) und mindestens zwei von der Ringleitung an je einer Anschlußstelle zu einer Beschichtungsvorrichtung (14, 25 - 29) führenden Hinlaufleitungen (12, 32, 32'), dadurch gekennzeichnet, daß in die Ringleitung (10, 20) an einer stromabwärts hinter den Anschlußstellen befindlichen Stelle ein automatisch gesteuertes Absperrventil (16, 36, 37) zum Absperren der Ringleitung (10, 20) geschaltet ist, und daß die Hinlaufleitungen (12, 32, 32') an eine ihnen gemeinsame separate Rücklaufleitung (15, 35, 35') angeschlossen ist, die stromabwärts hinter der Absperrstelle (16, 36, 37) in die Ringleitung (10, 20) führt.
- Beschichtungsanlage nach Anspruch 3, dadurch gekennzeichnet, daß die Ringleitung (20) mindestens zwei Absperrventile (36, 37) enthält, daß mindestens zwei stromaufwärts vor der ersten Absperrstelle von der Ringleitung (20) zu je einer oder mehreren Beschichtungsvorrichtungen (25 - 29) führende Hinlaufleitungen (32) an eine ihnen gemeinsame Rücklaufleitung (35) angeschlossen sind, die stromabwärts hinter der ersten Absperrstelle (36) in die Ringleitung (20) führt, und daß zwischen den beiden Absperrstellen (36, 37) von der Ringleitung (20) jeweils zu Beschichtungsvorrichtungen führende weitere Hinlaufleitungen (32') an eine ihnen gemeinsame zweite separate Rücklaufleitung (35') angeschlossen sind, die stromabwärts hinter der zweiten Absperrstelle (37) in die Ringleitung (20) führt.
- Beschichtungsanlage nach Anspruch 4, dadurch gekennzeichnet, daß die beiden Absperrventile (36, 37) gleichzeitig und gleichsinnig steuerbar sind.
- Beschichtungsanlage nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß den Beschichtungsvorrichtungen (25 - 29) Ventilanordnungen vorgeschaltet sind, mit denen die Verbindung der Hinlaufleitungen (32, 32') mit den Rücklaufleitungen (35, 35') steuerbar ist.
- Beschichtungsanlage nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß für jeden bei der Beschichtung wählbaren Farbton je eine Ringleitung und zugehörige Hinlauf- und Rücklaufleitungen vorgesehen sind, und daß die Ventilanordnungen der Beschichtungsvorrichtungen als Teil eines Farbwechslers ausgebildet oder mit einem Farbwechsler verbunden sind, mit dem die Beschichtungsvorrichtungen selektiv mit allen Ringleitungen verbindbar sind.
- Beschichtungsanlage nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß der Querschnitt der separaten Rücklaufleitung (35, 35') in Strömungsrichtung stufenweise größer wird.
- Beschichtungsanlage nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß das Absperrventil (36, 37) als umschaltbares Mehrwegeventil ausgebildet ist, das in seiner einen Schaltstellung die Ringleitung (20) in der Umlaufrichtung öffnet, während es in seiner zweiten Schaltstellung die Ringleitung sperrt und das Beschichtungsmaterial aus der separaten Rücklaufleitung (35, 35') in den nicht gesperrten Teil der Ringleitung (20) leitet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19647168A DE19647168A1 (de) | 1996-11-14 | 1996-11-14 | Beschichtungsanlage und Verfahren zum Steuern des Materialflusses in der Anlage |
DE19647168 | 1996-11-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0842706A2 EP0842706A2 (de) | 1998-05-20 |
EP0842706A3 EP0842706A3 (de) | 1998-12-02 |
EP0842706B1 true EP0842706B1 (de) | 2002-05-15 |
Family
ID=7811718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119659A Expired - Lifetime EP0842706B1 (de) | 1996-11-14 | 1997-11-10 | Beschichtungsanlage und Verfahren zum Steuern des Materialflusses in der Anlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0842706B1 (de) |
DE (2) | DE19647168A1 (de) |
ES (1) | ES2175245T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9529370B2 (en) | 2005-09-13 | 2016-12-27 | Finishing Brands Uk Limited | Back pressure regulator |
EP1789202B2 (de) † | 2005-09-13 | 2017-03-08 | Finishing Brands Holdings Inc. | Farbenumwälzsystem und -verfahren |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006002389A1 (de) * | 2006-01-17 | 2007-07-19 | SCHÜTZE, Thomas | System zur Zuführung mehrere Farbkomponenten für mindestens eine Lackierstation, insbesondere für Kraftfahrzeugkarosserien |
RU2436638C2 (ru) | 2006-05-12 | 2011-12-20 | Дюрр Сюстемс Гмбх | Установка для нанесения покрытия и способ ее эксплуатации |
DE102019130920A1 (de) * | 2019-11-15 | 2021-05-20 | Dürr Systems Ag | Farbversorgungssystem für eine Beschichtungsanlage und zugehöriges Betriebsverfahren |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3720373A (en) * | 1971-08-30 | 1973-03-13 | G Levey | Recirculating paint system or the like |
DE2923906C2 (de) * | 1979-06-13 | 1981-01-08 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren und Vorrichtung zur Lackversorgung von Lackierstraßen |
US4657047A (en) * | 1984-12-10 | 1987-04-14 | Nordson Corporation | Modular color changers with improved valves and manifolds |
US5501397A (en) * | 1993-12-02 | 1996-03-26 | Hose Specialties/Capri, Inc. | Recirculating paint system having a valved quick disconnect fluid coupling assembly |
-
1996
- 1996-11-14 DE DE19647168A patent/DE19647168A1/de not_active Withdrawn
-
1997
- 1997-11-10 DE DE59707276T patent/DE59707276D1/de not_active Expired - Fee Related
- 1997-11-10 EP EP97119659A patent/EP0842706B1/de not_active Expired - Lifetime
- 1997-11-10 ES ES97119659T patent/ES2175245T3/es not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9529370B2 (en) | 2005-09-13 | 2016-12-27 | Finishing Brands Uk Limited | Back pressure regulator |
EP1789202B2 (de) † | 2005-09-13 | 2017-03-08 | Finishing Brands Holdings Inc. | Farbenumwälzsystem und -verfahren |
Also Published As
Publication number | Publication date |
---|---|
DE59707276D1 (de) | 2002-06-20 |
EP0842706A3 (de) | 1998-12-02 |
DE19647168A1 (de) | 1998-05-28 |
EP0842706A2 (de) | 1998-05-20 |
ES2175245T3 (es) | 2002-11-16 |
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