EP2089164B2 - Universalzerstäuber und zugehöriges betriebsverfahren - Google Patents

Universalzerstäuber und zugehöriges betriebsverfahren Download PDF

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Publication number
EP2089164B2
EP2089164B2 EP07819602.9A EP07819602A EP2089164B2 EP 2089164 B2 EP2089164 B2 EP 2089164B2 EP 07819602 A EP07819602 A EP 07819602A EP 2089164 B2 EP2089164 B2 EP 2089164B2
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EP
European Patent Office
Prior art keywords
paint
flushing
atomiser
different
accordance
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.)
Active
Application number
EP07819602.9A
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German (de)
English (en)
French (fr)
Other versions
EP2089164A2 (de
EP2089164B1 (de
Inventor
Frank Herre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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Publication date
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Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP2089164A2 publication Critical patent/EP2089164A2/de
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Publication of EP2089164B1 publication Critical patent/EP2089164B1/de
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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
    • 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
    • B05B12/1409—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 the selection means being part of the discharge apparatus, e.g. part of the spray gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell

Definitions

  • the invention relates to an atomizer, in particular a rotary atomizer, and a corresponding operating method according to the independent claims.
  • various paint systems are used as wet paints, namely solvent-based paints on the one hand and water-based paints on the other, which are more environmentally friendly.
  • the application of the various paint systems is carried out by atomizers, which can be designed, for example, as rotary atomizers and, in addition to a paint line for supplying the wet paint with the desired color, also have a flushing line to flush the atomizer with a flushing agent during breaks in operation or when changing color the flushing agent is adapted to the paint system used in each case.
  • the application device has only a single paint supply, which necessitates complex rinsing processes when changing between different paint systems (e.g. water-based paint/solvent-based paint).
  • valve arrangement which serves to mix the various components (eg base paint/hardener) of a multi-component paint. Due to its design, however, this known valve arrangement is not suitable for supplying different paint systems (eg water-based paint/solvent-based paint).
  • the invention is therefore based on the object of correspondingly improving the known atomizer described at the outset and of specifying an associated operating method.
  • the invention comprises the general technical teaching of providing separate paint feeds for the different paint systems in the atomizer, so that the atomizer can be operated alternately with the different paint systems.
  • the differentiation between different paint systems used within the scope of the invention preferably differentiates between solvent-based paints on the one hand and water-based paints on the other hand, it being possible for the two paint systems to be supplied in different colors.
  • Water-based paints of different colors therefore belong to the same paint system within the meaning of the invention, as do solvent-based paints with different ones colors are assigned to the same paint system.
  • paint system used in the context of the invention thus includes all components of the respective paint, such as solvents, binders, additives, dyes and fillers.
  • the various paint systems can differ, for example--as already mentioned above--in the solvent used, with one paint system essentially containing water as the solvent, while the other paint system can contain an organic solvent.
  • a primer can be applied with a water-based paint, followed by a water-based base coat, and then a solvent-based clear coat.
  • the different paint feeds for the individual paint systems each have separate main needle valves which supply a common application element (e.g. a bell cup) with the different paint systems.
  • a common application element e.g. a bell cup
  • application element used in the context of the invention is preferably based on rotating bell cups, which are known per se and therefore do not need to be described in more detail.
  • the invention is not limited to bell cups, but also includes, for example, the discs, baffle plates, air atomizers and the like customary in disc atomizers as application elements.
  • separate main needle monitors are preferably also provided in order to monitor and/or set the valve position of the individual main needle valves independently of one another.
  • the atomizer according to the invention preferably has separate return lines for the individual paint feeds, which enables fast rinsing with large streams or volumes of rinsing agent in each paint feed.
  • the possible flows of flushing agent are limited, since the bell cup could be flooded.
  • all material "disposed of" in the booth or washout must be filtered out of the washout again.
  • the return lines enable permanent circulation of the respective paint system. Another important point for the use of return lines for the various areas is the time saving through at least partially parallel processes, such as rinsing between the color changer and atomizer (depending on the charging and paint type).
  • these return lines are completely isolated from each other in the atomizer outside the atomizer to prevent chemical reaction between incompatible paint systems.
  • chemically compatible paint systems there is also the possibility that the individual return lines for the different paint systems flow downstream into a common return line.
  • the atomizer according to the invention can also have an electrostatic charge for the applied wet paint. External charging and/or direct charging can be used here, which is known per se from the prior art.
  • the atomizer according to the invention can therefore have at least one external electrode for electrostatically externally charging the applied paint systems and/or at least one contact electrode for electrostatically directly charging the applied paint systems.
  • the external charging with the associated electrodes can be temporarily dismantled and stored by the atomizer when applying solvent-based paint, which is described, for example, in the patent application EP 1 634 651 A1 is described, so that the content of the present description is fully attributable is.
  • the atomizer according to the invention has separate rinsing lines for the individual paint systems in order to be able to supply chemically compatible rinsing agents that are adapted to the respective paint system.
  • each of the paint feeds is assigned a flushing line in each case in order to be able to supply the appropriate flushing agent for the respective paint system (water-based paint or solvent-based paint).
  • an additional flushing line is also provided in order to avoid a chemical reaction between the different paint systems when changing between the different paint systems.
  • the additional rinsing agent must therefore be chemically compatible with the various paint systems and the associated rinsing agents and act as a kind of buffer.
  • the number of different rinsing agents and thus generally also the number of rinsing lines is greater than the number of different paint systems or paint feeds.
  • the number of different flushing agents or flushing lines can be greater by one than the number of different paint systems or paint feeds.
  • the flushing lines in the nebulizer open out in a line section which is located downstream of the individual main needle valves.
  • This arrangement of the flushing line is particularly suitable for short flushing of the Application element to clean the application element.
  • the invention includes not only the atomizer described above as a single component, but also a complete painting machine with such an atomizer, wherein the painting machine can be designed, for example, as a multi-axis painting robot, side machine or as a roof machine.
  • the invention is not limited to painting robots, roof machines or side machines, but also includes other machine types that are well known from the prior art.
  • the external flushing valve arrangement can be arranged, for example, on what is known as “arm 1” or on what is known as “arm 2” of the painting robot.
  • arm 1 what is known as “arm 1”
  • arm 2 what is known as “arm 2” of the painting robot.
  • the invention is not limited to the above examples, but can also be implemented in other ways.
  • the coating machine according to the invention preferably separate supply lines for the different paint systems.
  • the individual supply lines for the different paint systems can each have a color changer in order to enable a color change in each supply line.
  • the different paint systems can be dosed by separate dosing pumps, which are arranged in the individual supply lines.
  • the painting machine according to the invention is preferably designed as a multi-axis painting robot and has a first robot arm ("arm 1") and a second robot arm ("arm 2"), the second robot arm being movably attached to the first robot arm and directly having a robot hand axis with an application device (e.g. a rotary atomizer).
  • the two dosing pumps for the different paint systems can, for example, both be attached to or in the first robot arm ("arm 1").
  • the individual dosing pumps for the different paint systems are attached to or in the second robot arm (“arm 2").
  • one of the dosing pumps is attached to or in the first robot arm, while the other of the two dosing pumps is attached to the second robot arm.
  • the painting machine according to the invention can have a traversing axis with a carriage that can be moved on a rail, the carriage carrying a painting robot, for example.
  • the dosing pumps can in this case be arranged completely or partially traveling on the carriage.
  • the invention is not limited to the examples described above, but can also be implemented in other ways.
  • the invention also includes a painting booth with a painting machine according to the invention and a booth wall which spatially delimits the painting booth.
  • the metering pumps for the individual paint systems can be arranged completely or partially on the booth wall, either inside the paint booth or outside the paint booth.
  • the invention also includes an operating method for an atomizer in order to enable universal operation with different paint systems.
  • figure 1 shows a partially conventional rotary atomizer 1 with a rotatably mounted bell cup 2, the rotary atomizer 1 being used both for the application of a solvent-based paint and for the application of a water-based paint.
  • the water-based paint is fed in via a paint feed 3
  • the solvent-based paint is fed in via a separate paint feed 4 in the rotary atomizer 1 .
  • a return line 5 or 6 branches off from each of the two paint feeds 3, 4 for the water-based paint or solvent-based paint, so that the two paint systems can circulate permanently in the paint feeds 3, 4.
  • paint feed 3 and the associated return line 5 on the one hand and the other paint feed 4 and the associated return line 6 on the other hand are separated from one another in order to prevent contact between the different paint systems (solvent-based paint and water-based paint). This is important because contact between the different paint systems would lead to a chemical reaction and thus irreversible damage to the rotary atomizer 1 .
  • shut-off valve RFA or RFB is arranged in each of the two return lines 5, 6, which enables the return line 5 or 6 to be shut off.
  • shut-off valve RFA is closed when the main needle valve FA is opened, since no circulation via the return line 5 is then required.
  • the shut-off valve RFA is opened when the main needle valve FA is closed, so that the paint system in the paint feed 3 can then circulate via the return line 5 .
  • shut-off valve RFB in the return line 6 is opened when the other main needle valve FB is closed.
  • the shut-off valve RFB is closed when the main needle valve FB is opened, since no circulation via the return line 6 is then required.
  • the two paint feeds 3, 4 open into a common line section 7, which leads to the bell cup 2, via a respective main needle valve FA or FB.
  • the rotary atomizer 1 has two rinsing lines 8, 9, which run separately from one another in the rotary atomizer 1, a rinsing agent for solvent-based paint being supplied via the rinsing line 8, while a rinsing agent for water-based paint is supplied via the rinsing line 9.
  • the two rinsing lines 8, 9 each open into the line section 7 between the two main needle valves FA, FB and the bell cup 2 via a rinsing valve V1 or V2, thereby enabling the rotary atomizer 1 to be rinsed with the various rinsing agents which are fed through the two rinsing lines 8, 9 are supplied.
  • a special feature of this exemplary embodiment is that a common main needle valve HN is arranged in line section 7, while a shut-off valve FG1 or FG2 is arranged in each of the two paint feeds 3, 4 in order to prevent contact between the different paint systems in the two paint feeds 3, 4 to prevent.
  • a special feature of this exemplary embodiment is that, in addition to the two paint feeds 3, 4, a third paint feed 10 is provided, which opens into the common line section 7 via a further main needle valve FC.
  • a separate return line 11 also branches off from the third paint feed 10 via a shut-off valve RFC, so that the paint supplied can also circulate permanently in the paint feed 10, as has already been described above.
  • a further special feature of this exemplary embodiment is that, in addition to the two flushing lines 8, 9, a third flushing line 12 opens into the line section 7 via a further flushing valve V3, with the point where the flushing lines 8, 9 and 12 open out in this exemplary embodiment being directly in front of the bell cup 2 lies, so that the flushing lines 8, 9, 12 are particularly suitable for briefly flushing the bell cup 2.
  • the rotary atomizer 1 in this exemplary embodiment has three further flushing lines 13, 14 and 15, which each open into the common line section 7 of the rotary atomizer 1 via a flushing valve v1, v2 or v3.
  • the opening point of the flushing line is 13-15 here in the common line section 7 immediately behind the main needle valves FA-FC, i.e. at the upstream end of the common line section 7.
  • the flushing lines 13-15 are therefore also suitable for normal flushing of the common line section 7, which is connected by the flushing lines 8, 9 and 12 can be flushed less effectively.
  • the rotary atomizer enables not only a change between different paint systems (solvent-based paint and water-based paint), but also a change between different colors.
  • different colors of a paint system can be supplied via the two paint feeds 3, 4 in the so-called A/B mode, whereas a different paint system is fed via the paint feed 10.
  • figure 4 shows a modification of the exemplary embodiments described above that is not according to the invention, so that to avoid repetition, reference is made to the above description, with the same reference symbols being used below for corresponding components.
  • a special feature of this exemplary embodiment is that the rotary atomizer 1 has three paint feeds 3, 4 and 10, but only two internal flushing lines 8, 13 for supplying different flushing agents.
  • the scavenging line 8 opens into the common power section 7 via a scavenging valve KS downstream behind the common main needle valve HN, so that the scavenging line 8 is particularly suitable for briefly scavenging the bell cup 2 .
  • the other flushing line 13 opens out via a flushing valve V into the common line section 7 upstream of the common main needle valve HN.
  • the flushing line 13 is therefore also suitable for flushing the main needle valve HN.
  • different rinsing agents can be supplied, which are adapted to the different paint systems and are supplied via three external rinsing lines 16, 17, 18.
  • the external flushing lines 16, 17, 18 are connected to the two internal flushing lines 8, 13 via an external flushing valve assembly 19, so that each of the external flushing lines 16-18 can be connected by the flushing valve assembly 19 to one or both of the flushing lines 8, 13 .
  • the flushing valve arrangement 19 is arranged outside of the rotary atomizer 1 and can be arranged, for example, on a robot arm of a painting robot.
  • the various flushing agents are distributed from the external flushing lines 16-18 to the two internal flushing lines 8, 13 by three flushing valves V1, V2 and V3 connected in parallel and two flushing valves FG KS and GF V connected in parallel on the outlet side.
  • FIG. 2 shows two painting robots 20, 21 according to the invention, which can be moved linearly along a traversing rail 22.
  • the two painting robots 20, 21 each have a robot base 23 on which a rondel 24 is rotatably mounted about a vertical axis.
  • a counselel 24 is rotatably mounted about a vertical axis.
  • the robot arm 25 pivotally mounted, the robot arm 25 carrying a further robot arm 26 ("arm 2").
  • the robot arm 26 carries an electrostatic rotary atomizer 28 via a robot hand axis 7, as has been described above and in various exemplary embodiments in FIGS Figures 1 to 4 is shown.
  • the rondel 24 and the two robot arms 25, 26 various components of the painting system can be distributed here, such as dispensers, color changers and the flushing valve arrangement 19 figure 4 .
  • a special feature of this exemplary embodiment, which is not according to the invention, is that the flushing line 8 is the only flushing line.

Landscapes

  • Spray Control Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
EP07819602.9A 2006-11-15 2007-11-05 Universalzerstäuber und zugehöriges betriebsverfahren Active EP2089164B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006053921.4A DE102006053921B4 (de) 2006-11-15 2006-11-15 Lackiermaschine mit einem Zerstäuber und zugehöriges Betriebsverfahren
PCT/EP2007/009581 WO2008058650A2 (de) 2006-11-15 2007-11-05 Universalzerstäuber und zugehöriges betriebsverfahren

Publications (3)

Publication Number Publication Date
EP2089164A2 EP2089164A2 (de) 2009-08-19
EP2089164B1 EP2089164B1 (de) 2018-05-02
EP2089164B2 true EP2089164B2 (de) 2022-08-24

Family

ID=39186828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819602.9A Active EP2089164B2 (de) 2006-11-15 2007-11-05 Universalzerstäuber und zugehöriges betriebsverfahren

Country Status (8)

Country Link
US (1) US9346070B2 (es)
EP (1) EP2089164B2 (es)
JP (1) JP5502489B2 (es)
CN (1) CN101557881B (es)
DE (1) DE102006053921B4 (es)
ES (1) ES2681718T5 (es)
RU (1) RU2450868C2 (es)
WO (1) WO2008058650A2 (es)

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DE102010010053B4 (de) * 2010-03-03 2019-05-16 Dürr Systems Ag Zerstäuber und Verfahren zum Applizieren von Ein- und Mehr-Komponenten-Beschichtungsmitteln
USD873874S1 (en) 2012-09-28 2020-01-28 Dürr Systems Ag Axial turbine housing for a rotary atomizer for a painting robot
BR112012033282A2 (pt) * 2010-07-21 2016-11-22 Valspar Sourcing Inc método para revestir eletrostaticamente um substrato alvo, e, aparelho de revestimento eletrotástico
WO2015041831A1 (en) * 2013-09-20 2015-03-26 Nabors Industries, Inc. Pipe doping apparatus
FR3012865B1 (fr) * 2013-11-04 2016-01-08 Sames Technologies Dispositif d'alimentation d'un projecteur en produit de revetement liquide
DE102014010864A1 (de) 2014-07-24 2016-01-28 Eisenmann Ag Beschichtungssystem zum Beschichten von Gegenständen
DE102015008661A1 (de) 2015-07-03 2017-01-05 Dürr Systems Ag Nadelventil
DE102015010158A1 (de) 2015-07-03 2017-01-05 Dürr Systems Ag Applikationsgerät, insbesondere Rotationszerstäuber

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RU2450868C2 (ru) 2012-05-20
DE102006053921A1 (de) 2008-05-29
WO2008058650A2 (de) 2008-05-22
JP2010509059A (ja) 2010-03-25
JP5502489B2 (ja) 2014-05-28
US20100133353A1 (en) 2010-06-03
ES2681718T3 (es) 2018-09-14
EP2089164A2 (de) 2009-08-19
WO2008058650A3 (de) 2008-08-28
EP2089164B1 (de) 2018-05-02
RU2009122497A (ru) 2010-12-20
ES2681718T5 (es) 2022-10-31
CN101557881B (zh) 2012-09-19
DE102006053921B4 (de) 2016-11-24
US9346070B2 (en) 2016-05-24
CN101557881A (zh) 2009-10-14

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