WO2008061584A1 - Betriebsverfahren für einen zerstäuber und entsprechende beschichtungseinrichtung - Google Patents
Betriebsverfahren für einen zerstäuber und entsprechende beschichtungseinrichtung Download PDFInfo
- Publication number
- WO2008061584A1 WO2008061584A1 PCT/EP2007/008165 EP2007008165W WO2008061584A1 WO 2008061584 A1 WO2008061584 A1 WO 2008061584A1 EP 2007008165 W EP2007008165 W EP 2007008165W WO 2008061584 A1 WO2008061584 A1 WO 2008061584A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating
- air flow
- shaping air
- spray jet
- shaping
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
- B05B3/1014—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
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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
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0426—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved along a closed path
-
- 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
- B05B5/0426—Means for supplying shaping gas
-
- 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
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
-
- 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
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
-
- 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
Definitions
- the invention relates to an operating method for an atomizer for coating components, in particular of motor vehicle body parts. Furthermore, the invention relates to a corresponding coating device.
- a rotary atomizer which emits a spray of a coating agent by means of a rotating bell cup.
- this rotary atomizer has a plurality of shaping nozzles arranged in concentric rings around the bell cup and discharging a directing air flow substantially axially from behind onto the spray jet, whereby the spray jet width can be adjusted.
- a broad spray jet is preferably set in order to be able to quickly and efficiently coat large component surfaces.
- at most a small steering air flow is delivered, so that the spray is compressed only to a small extent.
- different values for the shaping air flow are set in order to selectively achieve a narrow spray jet or a wide spray jet.
- a disadvantage of the above-described method for adjusting the shaping air flow is the fact that the relationship between a certain shaping air flow and the resulting spray jet width fluctuates during operation of the rotary atomizer, which makes precise adjustment of the spray jet width more difficult.
- a steering air control is known in which the speed of the directing air flow is influenced in order to keep a so-called control ratio constant, which is the ratio between the product of rotational speed and steering air volume on the one hand and coating agent flow on the other hand ,
- the controller thus pursues a different control objective and does not prevent the spray jet width from fluctuating as a function of the current operating conditions.
- DE 199 38 093 A1 discloses a regulation which regulates the steering air flow rate as a controlled variable to a predetermined desired value, the setpoint value being determined according to the desired spray width can be varied.
- the invention is therefore based on the object to improve the above-described known rotary atomizer and the associated operating method accordingly.
- the invention is based on the technical knowledge that the spray jet width not only depends on the guide air flow, but also on the kinetic energy of the individual paint droplets in the applied spray.
- individual coating agent parameters e.g., paint viscosity, paint surface tension
- atomizer parameters e.g., bell cup speed
- this adaptation of the atomizer parameters (e.g., bell cup speed) to the actual coating agent parameters (e.g., paint viscosity) results in correspondingly different kinetic energies of the coating agent droplets, thus necessitating a corresponding adjustment of the directing air flow to achieve the desired spray jet width.
- the invention therefore provides that, during operation of the atomizer, at least one application parameter is determined which has a property (eg viscosity, surface tension) of the applied coating agent or an operating variable (eg speed) of the atomizer and has an influence on the applied spray jet, in particular on the kinetic energy of the sprayed coating agent droplets Chen.
- a property eg viscosity, surface tension
- an operating variable eg speed
- the steering air flow is then influenced as a function of this application parameter in order to set the desired shape or width of the applied spray jet.
- the consideration of the application parameter in influencing the steering air flow offers the advantage that the different kinetic energies of the applied paint droplets can be taken into account, whereby the desired spray jet width can be set more precisely than in the conventional rotary atomizer described above.
- the invention preferably provides for control of spray jet width, i. without a measurement and feedback of the spray jet width as the variable to be controlled.
- the spray jet width is the variable to be controlled (control variable) which is controlled as a disturbance variable as a function of the variable application parameter (for example paint viscosity, paint temperature, atomizer speed, etc.).
- the steering air flow is set as a control variable as a function of the variable application parameter.
- the aim of the control is to set the spray jet width independent of fluctuations of the application parameter to a predetermined target value.
- the spray jet width is not controlled, but fluctuations in the spray jet width are compensated for by the web spacing and / or the coating speed (drawing speed). is adjusted accordingly between the adjacent coating center lines.
- the term of the coating speed used in the context of the invention is preferably based on the feed rate of the application device during painting.
- the web spacing is correspondingly reduced to maintain the desired web overlap.
- the spray jet width increases due to variations in the application parameters (for example paint viscosity, paint temperature, atomizer speed, etc.), the web spacing is correspondingly increased in order to obtain the desired web overlap.
- the invention therefore provides in this variant of the invention that the web overlap between the adjacent coating center webs is controlled to a predetermined, desired web overlap by adjusting the web distance as a function of the variable application parameter (eg paint viscosity, paint temperature, atomizer speed, etc.) ,
- the variable application parameter eg paint viscosity, paint temperature, atomizer speed, etc.
- control of the spray jet width or control of the web overlap can also be combined with one another within the scope of the invention.
- the film thickness can be controlled by adjusting the painting speed (i.e., the advancing speed of the atomizer in the web direction).
- the control of the layer thickness can also take place in the context of the invention as a function of the variable application parameter.
- application parameter used in the context of the invention therefore encompasses all variables which have an influence on the spray jet in the coating operation, in particular on the kinetic energy of the sprayed-on coating agent droplets or the spray jet form. Moreover, this term is not limited to a single size but also includes several different sizes. Thus, the control of the spray jet width or the web overlap can also be carried out as a function of several different application parameters.
- the amount of discharged steering air per unit time to understand ie in the physical sense of the volume flow or the mass flow of the discharged shaping air.
- the invention provides that not only a single steering air flow is delivered, but - as in the aforementioned patent application EP 1 331 037 A2 - at least one additional steering air flow.
- the application parameter eg paint viscosity, Bell plate speed
- the individual shaping air streams are preferably delivered in different directions, which is known per se from the patent application EP 1 331 037 A2 already cited at the outset.
- the individual shaping air flows are superposed to form a resulting shaping air flow, the direction of which depends on the individual shaping air flows. By an individual adjustment of the individual superimposed shaping air flows, the direction of the resulting shaping air flow can therefore be influenced within the scope of the invention.
- the influencing of the direction of the resulting shaping air flow preferably takes place here as a function of the abovementioned application parameter (eg viscosity of the coating agent, speed of the atomizer).
- the invention enables a variable directional orientation of the resulting shaping air flow for extended and flexible parameterization of the atomizer in order to achieve an economical coating application for a wide variety of requirements with optimum layer thickness (application efficiency), layer distribution and quality.
- the application parameter used for influencing the shaping air flow may be the viscosity of the applied coating agent or the speed of the atomizer.
- the invention is not limited to these two parameters with regard to the application parameter of interest, but can also be implemented with other parameters.
- the application parameter may be the surface tension of the applied coating agent, the electrical voltage of an electrostatic charge of the coating agent, the temperature of the applied coating agent, the ambient temperature, the coating agent flow and / or the type of applied coating agent.
- the invention there is in the frame the invention the possibility that several of the above-mentioned application parameters are evaluated together and jointly influence the Lenkluftstrom.
- the individual shaping air flows can be fed optionally by a common air supply or by separate air supplies with shaping air.
- the fact that the individual shaping air flows can be adjusted flexibly and independently of one another is advantageous for feeding the individual shaping air streams through their own air supplies.
- the steering air flow influence within the scope of the invention preferably takes place automatically, so that no user intervention is required in order to compensate for the influence of the varying application parameter when setting the spray jet width.
- coating agents in the context of the invention may optionally be powder coating or wet paint (solvent-based paint or water-based paint).
- the invention is therefore not limited to certain types of coating agents with regard to the coating agent to be applied.
- the steering air flow is influenced by a control device which, for example, controls a steering air valve in order to take into account the application parameter (for example paint viscosity, bell-plate rotational speed) when influencing the steering air flow.
- the control device preferably influences both directing air streams, wherein the influencing of the individual directing air streams can take place independently of one another.
- a shaping air nozzle arrangement is provided, each of which has a plurality of concentrically arranged nozzle openings, which is known per se from the prior art.
- the individual shaping air streams can each be delivered by a separate ring of shaping air nozzles, wherein the individual shaping air nozzles are preferably arranged concentrically with one another.
- the individual shaping air nozzle rings can have essentially the same diameter, so that nozzle openings of the first shaping air nozzle arrangement and of the second shaping air nozzle arrangement are arranged alternately distributed over the circumference.
- the nozzle openings of the two shaping air nozzle arrangements can each be combined in pairs, so that numerous pairs of shaping air nozzles are arranged distributed over the circumference, wherein each of these pairs has a shaping air nozzle for each shaping air stream.
- the individual nozzle openings have a swirl in the circumferential direction and Although either in the direction of rotation or counter to the direction of rotation of the bell plate.
- the nozzle openings of one shaping air nozzle arrangement can also have a twist in the circumferential direction, while the nozzle openings of the other shaping air nozzle arrangement have no twist in the circumferential direction.
- the nozzle openings provided with a swirl in the circumferential direction can have a helix angle between 30 ° and 75 °, wherein a helix angle of 45 ° has proven to be advantageous.
- three or more shaping air streams can be discharged in order to form the spray jet.
- the additional third shaping air flow can be influenced in the same way as the two shaping air flows described above.
- the individual guide air flows can also be used as a free-hold air to keep the bell cup of contamination free.
- the individual steering air flows are heated or conditioned in other wise, which is known per se from the prior art.
- Figure 1 is a cutaway perspective view of a
- FIG. 2 shows a further exemplary embodiment of a rotary atomizer with two guiding fins
- Figure 3A is a front view of a shaping air ring with two
- FIG. 3B shows a cross-sectional view of the shaping air ring from FIG. 3A
- FIG. 4 is a front view of an alternative embodiment of a shaping air ring for use in the invention.
- FIG. 5 shows a schematic side view of a rotary atomizer with two guiding fins
- FIG. 6 shows a simplified image of a coating device according to the invention, as well
- Figures 7A, 7B is a simplified illustration of Lackierbahnen on the components.
- FIG. 1 shows a rotary atomizer 1 for the application of wet paint, such as solvent or water paint.
- the rotary atomizer 1 on a bell cup 2 which rotates in operation at high speed and emits a spray jet 4 at an annular orbiting Absprühkante 3.
- the wet paint to be applied is in this case supplied through a paint tube 5 and then strikes first in the bell cup 2 on a rotating with the bell cup 2 guide pulley 6 with a through hole 7, wherein the deflection plate 6 divides the axially incident paint stream into two streams 8, 9 ,
- the partial flow 8 is laterally deflected by the deflecting disk 6 in the radial direction and, due to the centrifugal force occurring during operation, flows outward along an internal overflow surface to the spray-off edge 3, where the paint is finally discharged in the form of the spray jet 4.
- the partial flow 9 passes axially through the through-bore 7 in the deflecting disk 6 and then flows outward in the radial direction on the end face of the deflecting disk 6 due to the centrifugal force, so that the end face of the deflecting disk 6 is also permanently covered by paint during operation ,
- the rotary atomizer 1 has a shaping air ring 10, via which two shaping air streams 11, 12 are delivered to the front in order to form the spray jet 4.
- the shaping air ring 10 has a ring of shaping air nozzles 13, which are arranged distributed over the circumference of the shaping air ring 10 in a predetermined radius to the axis of rotation of the bell cup 2.
- the delivery of the inner directing air flow 11 is likewise effected by a ring of shaping air nozzles 14, which are arranged in the shaping air ring 11 in a predetermined radius with respect to the axis of rotation of the bell cup 2.
- the Lenkluftdüsen 13 give the guide air flow 12 slightly obliquely forward to the outside, the guide air flow 12 with the axis of rotation of the bell cup 2 forms an angle of approximately 15 °.
- the steering air flow 11 is emitted by the shaping air nozzles 14 almost coaxially with the axis of rotation of the bell cup 2.
- the two shaping air flows 11, 12 are then superimposed during operation of the rotary atomizer 1 to a resulting shaping air flow with a certain flow velocity and a specific flow direction.
- the flow direction and the flow velocity of the resulting shaping air flow can then be varied by setting the shaping air flow through the shaping air nozzles 13, 14 independently of one another.
- the two shaping air streams 11, 12 are then adjusted so that the desired shape and width of the spray jet 4 are always set independently of the paint used and independently of the operating parameters (for example bell-plate rotational speed) of the rotary atomizer 1.
- the rotary atomizer 1 still allows an external rinse by a detergent flow 15, which is passed over the outer surface of the bell cup 2 and thereby frees it from possibly adhering paint residues.
- a detergent flow 15 which is passed over the outer surface of the bell cup 2 and thereby frees it from possibly adhering paint residues.
- Such outdoor rinse is in itself from the prior
- Figure 2 shows a cross-sectional view of the complete rotary atomizer 1 with the bell cup 2 and a mounting pin 16 for attachment of the rotary atomizer 1 on a robot hand axis of a painting robot, which in itself e- b pertain known from the prior art and therefore need not be described in detail.
- EP 1 331 037 A2 the content of which is to be fully included in the present description.
- Figures 3A and 3B show a front view and a cross-sectional view of the shaping air ring 10 in a possible alternative embodiment.
- reference is therefore made essentially to the above description, the same reference numerals being used for corresponding details below.
- a special feature of the shaping air ring 10 in this exemplary embodiment is that the inner shaping air nozzles 14 and the outer shaping air nozzles 13 deliver the respective shaping air flow axially parallel to the axis of rotation of the bell cup 2.
- FIG. 4 shows a further exemplary embodiment of a shaping air ring 10, which likewise largely corresponds to the exemplary embodiments described above, so that reference is made again to the above description to avoid repetition, with the same reference symbols being used again for corresponding details.
- a special feature of this embodiment is that in the shaping air ring 10 at a predetermined diameter in each case the shaping air nozzles 13 for the one steering air flow and the shaping air nozzles 14 for the other steering air flow are arranged in pairs. Distributed over the circumference here are numerous such pairs of Lenkluftdüsen 13, 14 are arranged. The two shaping air streams emerging from the shaping air nozzles 13, 14 can hereby be controlled independently of one another and overlap to a resulting shaping air flow with a specific flow direction and a specific flow velocity.
- FIG. 5 shows a further, greatly simplified exemplary embodiment of a rotary atomizer 1 according to the invention, which largely corresponds to the exemplary embodiments described above, so that reference is made to the above description to avoid repetition, the same reference numbers being used for corresponding details in the following.
- the inner guide air flow 11 is emitted axially parallel to the axis of rotation of the bell cup 2, whereas the guide air flow 12 is discharged obliquely outwards at an acute angle.
- the two shaping air flows 11, 12 are therefore superimposed to form a resulting shaping air flow 18 with a certain resulting flow direction and a corresponding flow velocity.
- the two shaping air streams 11, 12 can be set independently of one another in order to set the flow direction and the flow velocity of the resulting shaping air flow 18 in accordance with the current requirements.
- FIG. 6 shows, in a greatly simplified schematized form, an exemplary embodiment of a coating device, which Speaking of the invention, the adjustment of the shaping air flows 11, 12 allows.
- the coating device has a second shaping air supply 21, which supplies the second directing air flow 12 to the rotary atomizer 1, whereby the guiding air supply 21 is also controlled by the control unit 20 such that the rotary atomizer 1 emits a predetermined directing air flow QLL2.
- the coating device in a conventional manner to a paint supply 22, which supplies the rotary atomizer 1 with a predetermined paint flow Q LACK , wherein the desired paint flow Q LA c ⁇ is set by a control unit 23.
- the coating device has a high-voltage generator 24, which supplies the rotary atomizer 1 with an electrostatic charging voltage U, with which the spray jet 4 emitted by the bell cup 2 is charged electrostatically.
- the electrostatic charge of the spray jet 4 is known from the prior art and therefore need not be further described.
- control unit 23 transmits a rotational speed value n to a turbine control 25, the turbine control 25 transmitting a corresponding turbine air flow to the rotary engine. Dust 1 gives, so that the bell cup 2 rotates at the desired speed n.
- the turbine control 25 in this case includes a control with a feedback, since the actual speed is determined and used to control and possibly adjust the speed.
- the control unit 20 calculates the two shaping air flows Q LLI, Q i n LL2 depending on several calibration parameters, the partial operating variables of the rotary atomizer and partially reflect properties of the applied lacquer.
- control unit 20 takes into account the applied paint flow Q LACK ⁇ , the electrostatic charging voltage U and the rotational speed n of the bell cup 2 as operating variables of the rotary atomizer 1.
- control unit 20 also takes into account the viscosity ⁇ , the surface tension ⁇ and the temperature T of the applied paint.
- control unit 20 also takes into account the type of paint used (BC: Base Coat or CC: Clear Coat).
- the control unit takes into account that different drop spectra are formed in the applied spray jet 4 depending on the individual application parameters , which accordingly have different kinetic energies, so that the two shaping air flows 11, 12 are adjusted accordingly must be aligned or measured.
- the coating device has a multi-axis painting robot 26, which is controlled by a robot controller 27 and guides the rotary atomizer 1, so that the rotary atomizer 1 is to be coated on the Plates components coating medium tracks 28, which are parallel to each other, as shown in Figures 7A and 7B.
- the adjacent coating center webs 28 each have a specific web spacing d and a specific web width b B between their center axes, resulting in a specific web overlap b ü .
- the coating device therefore also makes possible a different variant for taking into account fluctuations in the application parameters.
- the spray jet width is not controlled to a constant, predetermined value, the control taking into account variations in the application parameters. Instead, it is provided in this variant that fluctuations in the spray jet width are permitted and compensated for by adjusting the track distance d accordingly.
- the coating device has a control unit 29, which has on its input side the application parameters ⁇ , ⁇ , T, BC / CC, Q LACK , n, U receives, wherein the application parameters ⁇ , ⁇ , T, BC / CC, Q LACK , n, U are disturbance variables in the control technical sense, since fluctuations in the application parameters ⁇ , ⁇ , T, BC / CC , Q LACK , n, U influence the web overlap bo if the web distance d is kept constant.
- control unit 29 controls the web overlap ba to a predetermined constant value by the control unit 29 adjusts the web distance d accordingly and thus controls the robot controller 27 accordingly.
- the web distance d is correspondingly reduced to maintain the desired web overlap bo.
- the spray jet width increases due to fluctuations in the application parameters (eg paint viscosity, paint temperature, atomizer speed, etc.), the web distance d is correspondingly increased in order to obtain the desired web overlap b ö .
- control unit 29 controls the layer thickness to a predetermined value by setting the coating speed v as a function of the application parameters ⁇ , ⁇ , T, BC / CC, QLA CK n, U.
- the coating speed v is in this case the feed rate of the rotary atomizer 1, taken along the coating agent webs 28.
- ⁇ the film thickness regardless of variations in the application parameters, ⁇ , BC / CC, Q LACKA n, U held T, at a constant value, resulting in a good coating quality.
- the desired nominal value for the spray jet width depends on the type of coating. When painting exterior surfaces, a large spray jet width usually makes sense, so that it can be painted over a large area. For interior painting and painting of small details, on the other hand, no spray jet width makes sense.
- Control unit b B Web width for web overlap
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Nozzles (AREA)
- Spray Control Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009537493A JP5571385B2 (ja) | 2006-11-21 | 2007-09-19 | 噴霧器用の操業方法および対応する塗装器具 |
EP07818258.1A EP2122427B1 (de) | 2006-11-21 | 2007-09-19 | Betriebsverfahren für einen zerstäuber und entsprechende beschichtungseinrichtung |
MX2009005191A MX2009005191A (es) | 2006-11-21 | 2007-09-19 | Metodo de operacion de atomizador y aparato de recubrimiento correspondiente. |
ES07818258T ES2710350T3 (es) | 2006-11-21 | 2007-09-19 | Procedimiento de funcionamiento para un pulverizador y dispositivo de recubrimiento correspondiente |
US12/162,457 US8097293B2 (en) | 2006-11-21 | 2007-09-19 | Operating method for an atomiser and a corresponding coating apparatus |
CN2007800431513A CN101542405B (zh) | 2006-11-21 | 2007-09-19 | 喷雾器的操作方法和相应的涂覆装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006054786.1 | 2006-11-21 | ||
DE102006054786A DE102006054786A1 (de) | 2006-11-21 | 2006-11-21 | Betriebsverfahren für einen Zerstäuber und entsprechende Beschichtungseinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008061584A1 true WO2008061584A1 (de) | 2008-05-29 |
Family
ID=38828612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/008165 WO2008061584A1 (de) | 2006-11-21 | 2007-09-19 | Betriebsverfahren für einen zerstäuber und entsprechende beschichtungseinrichtung |
Country Status (11)
Country | Link |
---|---|
US (1) | US8097293B2 (de) |
EP (1) | EP2122427B1 (de) |
JP (1) | JP5571385B2 (de) |
CN (1) | CN101542405B (de) |
DE (1) | DE102006054786A1 (de) |
ES (1) | ES2710350T3 (de) |
HU (1) | HUE042739T2 (de) |
MX (1) | MX2009005191A (de) |
RU (1) | RU2443479C2 (de) |
TR (1) | TR201900660T4 (de) |
WO (1) | WO2008061584A1 (de) |
Cited By (6)
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WO2011035886A1 (de) | 2009-09-24 | 2011-03-31 | Dürr Systems GmbH | Verfahren zur funktionskontrolle eines rotationszerstäubers und entsprechende beschichtungsanlage |
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- 2007-09-19 JP JP2009537493A patent/JP5571385B2/ja active Active
- 2007-09-19 ES ES07818258T patent/ES2710350T3/es active Active
- 2007-09-19 WO PCT/EP2007/008165 patent/WO2008061584A1/de active Application Filing
- 2007-09-19 RU RU2009123467/05A patent/RU2443479C2/ru active
- 2007-09-19 CN CN2007800431513A patent/CN101542405B/zh active Active
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009149950A1 (de) * | 2008-06-12 | 2009-12-17 | Dürr Systems GmbH | Universalzerstäuber |
US8881672B2 (en) | 2008-06-12 | 2014-11-11 | Duerr Systems, Gmbh | Universal atomizer |
WO2011035886A1 (de) | 2009-09-24 | 2011-03-31 | Dürr Systems GmbH | Verfahren zur funktionskontrolle eines rotationszerstäubers und entsprechende beschichtungsanlage |
DE102009042955A1 (de) | 2009-09-24 | 2011-04-07 | Dürr Systems GmbH | Verfahren zur Funktionskontrolle eines Rotationszerstäubers und entsprechende Beschichtungsanlage |
WO2011138048A1 (de) | 2010-05-06 | 2011-11-10 | Dürr Systems GmbH | Beschichtungseinrichtung mit zertropfendem beschichtungsmittelstrahl |
DE102010019612A1 (de) | 2010-05-06 | 2011-11-10 | Dürr Systems GmbH | Beschichtungseinrichtung, insbesondere mit einem Applikationsgerät, und zugehöriges Beschichtungsverfahren, das einen zertropfenden Beschichtungsmittelstrahl ausgibt |
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CN102527595A (zh) * | 2011-12-30 | 2012-07-04 | 西南铝业(集团)有限责任公司 | 一种静电涂dos油的方法 |
EP3056283B1 (de) | 2015-02-16 | 2018-01-03 | Toyota Jidosha Kabushiki Kaisha | Elektrostatischer rotationszerstäuberapplikator und formluftring dafür |
EP3269454B1 (de) | 2016-07-11 | 2020-09-09 | Exel Industries | Lenkluftring mit mindestens drei serien von verschiedenen luftausstossdüsen, rotationszerstäuber für ein beschichtungsprodukt mit einem solchem lenkluftring, und entsprechendes beschichtungsverfahren |
EP3269454B2 (de) † | 2016-07-11 | 2023-07-19 | Exel Industries | Lenkluftring mit mindestens drei serien von verschiedenen luftausstossdüsen, drehzerstäuber für ein beschichtungsprodukt mit einer solchem ring, und beschcichtungsverfahren |
Also Published As
Publication number | Publication date |
---|---|
HUE042739T2 (hu) | 2019-07-29 |
TR201900660T4 (tr) | 2019-02-21 |
EP2122427A1 (de) | 2009-11-25 |
ES2710350T3 (es) | 2019-04-24 |
EP2122427B1 (de) | 2018-11-14 |
RU2009123467A (ru) | 2010-12-27 |
RU2443479C2 (ru) | 2012-02-27 |
JP2010510055A (ja) | 2010-04-02 |
US8097293B2 (en) | 2012-01-17 |
CN101542405B (zh) | 2011-12-21 |
DE102006054786A1 (de) | 2008-05-29 |
US20090220703A1 (en) | 2009-09-03 |
CN101542405A (zh) | 2009-09-23 |
JP5571385B2 (ja) | 2014-08-13 |
MX2009005191A (es) | 2009-05-25 |
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