EP2101925B1 - Dispositif de revêtement équipé d'un dispositif de dosage - Google Patents

Dispositif de revêtement équipé d'un dispositif de dosage Download PDF

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Publication number
EP2101925B1
EP2101925B1 EP07819668.0A EP07819668A EP2101925B1 EP 2101925 B1 EP2101925 B1 EP 2101925B1 EP 07819668 A EP07819668 A EP 07819668A EP 2101925 B1 EP2101925 B1 EP 2101925B1
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EP
European Patent Office
Prior art keywords
color
paint
metering device
valves
atomiser
Prior art date
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Application number
EP07819668.0A
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German (de)
English (en)
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EP2101925A2 (fr
Inventor
Frank Herre
Rainer Melcher
Manfred Michelfelder
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Duerr Systems AG
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Duerr Systems AG
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Priority claimed from DE102006058562A external-priority patent/DE102006058562A1/de
Priority claimed from DE102007029195A external-priority patent/DE102007029195A1/de
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Priority to PL07819668T priority Critical patent/PL2101925T3/pl
Priority to EP14003987.6A priority patent/EP2853312B1/fr
Publication of EP2101925A2 publication Critical patent/EP2101925A2/fr
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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
    • 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
    • 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
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1675—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive the supply means comprising a piston, e.g. a piston pump
    • 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

Definitions

  • the invention relates to a coating device for serial coating of workpieces with different shades.
  • dosing device used here preferably means volumetric dosing devices, such as gear pumps or piston dosing devices, which can be driven by a controllable motor such that the amount of material (instantaneous flow) applied by the atomizer during the coating depends on demand, for example as a function of the respective workpiece area and other parameters, such as in EP 1 314 483 A2 or DE 691 03 218 T2 is explained.
  • the volumetric metering typically occurs by controlling the speed of a gear pump or the piston speed of a piston meter.
  • Gear metering pumps are preferred in many cases because of their small size, continuous paint delivery and cost advantages.
  • Piston dispensers on the other hand, have the advantage of higher metering accuracy by avoiding slippage between the gear pair and the housing of gear metering pumps, and in electrostatic painting equipment in which high voltage insulation between the atomizers and their grounded supply system is required, the discontinuous paint delivery operation of a piston metering device can easily achieve the necessary electrical isolation. Further advantages will be explained later.
  • a serving as a lacquer buffer container which is already filled to reduce the required color change times in a color change with the new color, while still painted with the previous color from the piston dispenser.
  • This storage container can also be defined as part of a metering device in the sense of the invention. To empty the storage container, this may also contain a piston in the cylinder.
  • volumetric dosage can eg according to EP 1 287 900 A2 also a color pressure regulator or according to EP 1 346 775 A1 serve the main needle valve of the atomizer as an actuator of a control circuit for controlling the amount of ink or effluent rate and thus as a metering device.
  • Color changer designated color change valve assemblies in block design ie used as a mechanical unit
  • Typical modular color changers for wet paint are for example off DE 198 36 604 A1 and DE 198 46 073 A1 while a basically similar color changer for powder coating in the DE 601 03 281 T2 is described.
  • the rinsing of color changers deals with the DE 199 51 956 A1 ,
  • Such color changer are typically upstream of the known gear or Kolbendosiervorraumen or possibly the mentioned paint storage container.
  • the installation of a color change valve arrangement in the atomizer also referred to in practice as the ICC technique (integrated color changer), has the advantage of substantially reducing color and detergent losses during the color change.
  • the color change losses for example, from about 45 ml of color per atomizer and color change in conventional color change technology can be reduced to only about 4 ml.
  • a similar Reduction results for the flushing agent losses.
  • the color change time can typically be halved, typically from 12 seconds to 6 seconds, resulting in an increase in coating machine capacity of about 5-10% or, for example, 30-60 vehicles daily.
  • color changers are common in paint shops because, as is well known, they allow rapid changeover from one color to another during the paint shop. But they have the principal disadvantage of unavoidable loss of color when flushing the more or less large central channel at each color change.
  • the color changer After optimizing the color losses in, for example, hoses, metering devices, etc., the color changer often represents the element of the coating unit with the greatest single loss.
  • the color change losses increase with the number of connected colors and the resulting length of the central channel, so that the number of hues often has to be limited undesirable.
  • the central channel is divided into independently rinsable sections, wherein the often required high-runner colors, ie the colors are connected with high consumption volume at the front end located at the color output, while rare at the rear, the color output facing away required colors (low-runner) are connected. While the often needed front section is always flushed independently of the rear section, the less frequently needed section can be flushed together with the other section. Since in a color change is no longer flushed as in conventional color changers always the entire central channel, resulting in lower losses of paint and rinsing liquid. But even these remaining color change losses are undesirable, especially for colors often required.
  • a color pressure regulator is arranged, which provide for a form control of a metering pump or, as already mentioned above, can serve as an actuator for color quantity control.
  • the dead space of this color pressure regulator must be rinsed with every color change.
  • WO 02/07899 A discloses a coating system with an atomizer replaceably mountable on a robotic arm, which contains a paint container and, during operation, of its Ink supply system is disconnected. To fill the paint container this can be connected in a stationary filling either to separate color change modules for frequently or less frequently required colors.
  • EP 0338871 A1 discloses a stationary color change system having a group of primary color changers connected upstream of a secondary color changer and connected at their inputs to respective colors in the order of color frequency. This is intended to reduce the frequency of rinses required for a color change.
  • EP 1360996 A1 describes a color distribution system, which is used for potential separation, between a color changer stationarily arranged outside the spray booth and high-voltage atomizers. This system contains two alternating piston feeders with servomotors as metering drive.
  • JP 06246200 A discloses a paint supply system for a nebulizer, which are preceded by a color common line with a pump two parallel color changer, whereby the length to be purged in a color change of the respective color changer channel is reduced.
  • EP 1134027 A2 discloses a potential separation system for an electrostatic sprayer, which consists of a flexible hose paint supply line to the collection channel of a color changer to the paint valves lines for the available colors are connected.
  • a piston which can be displaced like a pig and which is pushed through the color changer and the line in the direction of the atomizer in order to convey the paint.
  • the speed of movement of the piston can be controlled by a metering device.
  • It is an object of the invention is a coating device or usable for it Specify devices for the coating of workpieces in particular with different frequently required shades that allow a color change with minimal or little color, detergent and time losses.
  • the associated, controlled by external signals for color selection color valves are directly attached to the metering or built into this, but the color valves could also in the known manner ( EP 1502658 A1 ) form a typical color changer upstream of the metering device with a central output channel common to the colors.
  • the color valves for the high-runner colors grow only in the vicinity of the atomizer, preferably between the atomizer and the wrist of the atomizer moving paint robot or other program-controlled automatic movement machines.
  • the color valves can form a typical color changer in this case as well.
  • the metering device and / or the paint valves may be more convenient to arrange the metering device and / or the paint valves, possibly in a conventional color changer, although also in the vicinity of the atomizer, but a little further away from him, for example, in or on an arm of the atomizer moving Coating robot or other programmable motion machine.
  • the color changer provided for possibly many but less frequently required shades is always arranged separately and further away from the atomizer, preferably in or on one arm of the coating robot or the like.
  • Like. Are arranged, as is possible in many cases for the high-runner color valves, but possibly in or on the wrist-carrying front robot arm, if not too many colors are connected.
  • this color changer could also be further away from the atomizer, ie in the second robot arm or moving along (on the so-called axis 7) or even outside the painting robot.
  • Color losses in a color change can be, for example, in this case, but also for the high-runner ink supply described by those skilled in the per se known additional measures such as in particular the pig technology in conjunction with pushing back the remaining in the line colors to the supply system ("Reflow”) and / or almost complete consumption of each color in the line when applying (“pushout”) avoid.
  • the output of the separate color changer for less frequently required colors is preferably connected in parallel to the color lines of the most frequently required high-runner colors to its own additional input of the metering device or possibly its storage container.
  • the output of this color changer can also be connected directly to the atomizer via a line running parallel to the metering device of the high-runner colors and its own metering device, which can be located in the atomizer or in a largely arbitrary distance outside the atomizer.
  • d. H. usually at the main needle valve.
  • a further matching color changer is provided, which is connected to color lines for the same color tones.
  • This can avoid unwanted time losses during color change, because during the rinsing of a dye changer and its output line and during the preparation for the next color (possibly including reflow) of the atomizer can be supplied from the other color changer.
  • This alternating ink supply is usually referred to as A / B operation (cf. EP 1314483 A ).
  • the two matching supply branches are connected parallel to each other to the atomizer, in preferred embodiments of the invention described here to two inputs of the metering device (possibly their storage container) or otherwise via its own metering device to the Hauptnädelventil the atomizer.
  • a / B operation is also for the invention High-runner ink supply possible, for which then parallel to the arrangement of the metering device and the controlled color valves frequently required shades a matching arrangement of a metering device and controlled color valves is provided, in which case the color valves of the two arrangements of color lines for the same Shades are connected.
  • a single, but designed for alternating operation piston feeder in principle according to EP 1666158 A2 used, that is, a motor-driven piston dispenser with a cylinder whose separate areas through the piston each have a plurality of controlled inputs for the selectable different shades and one connected to the main needle or other output valve of the atomizer controlled output.
  • any color changer for less than the z. B. 7 or less Fiigh Runner colors required colors may conveniently contain at least two line sections, open into each of which several controlled paint valves for coating materials with selectable different shades, and of which at least one line section is irrigated independently of at least one other line section, the Line sections are connected by a controlled shut-off valve with each other and / or with an output line of the color changer.
  • Such color changer are in itself from the EP 1502657 A2 Known and allow to reduce the color change losses meaningful further differentiation between different colors often required, with less frequently needed colors are connected to the further away from the color output one line section of the color changer and the other colors at its located at the color output other line section.
  • these metering devices can also work simultaneously to supply the application organ with two components of a coating material, such as 2K lacquers, coming from separate supply lines.
  • the dosing device preferably installed or attached in the nebulizer or in its vicinity a piston dispenser with an automatically controllable for changing the piston speed during the application dosing drive, for which one of the known from the prior art constructions can be used.
  • the piston dispenser according to the invention or possibly its upstream storage container has in contrast to the known constructions not only one or at most (as in the case of the mentioned EP 1666158 ) two inputs, but for each of the selectable frequently required shades at least one input and at least one common for the feedable color materials output.
  • a piston dispenser In addition to the low material and time losses during color change, a piston dispenser has particular advantages over gear metering pumps and other metering systems such as better flushability with less flushing effort and the possibility of pressing back the colors (reflow) in the supply system such.
  • B. ring lines directly over the paint valves, without having to be filled for a color changer and the connection between the dispenser and the color changer.
  • Another essential advantage of the piston dispenser is that it does not have a color pressure regulator needed, in contrast to currently available gear metering pumps, which usually would have to be preceded by a separate color pressure regulator for reasons of metering accuracy for each connected color line.
  • the piston dispenser avoids the disadvantages of pressure regulators such as costs, color losses during color change, space requirements and weight loading of the robot axes.
  • Such a piston dispenser may also be useful and advantageous for itself and independently of the coating device described here, ie also in any other ink supply systems including systems in which the piston dispenser is not located in or in the atomizer.
  • the piston dispenser is not located in or in the atomizer.
  • the color-change valves may be incorporated into a gear metering pump of conventional type be attached to the metering pump.
  • the paint valves may also be placed in or on a container of a coating apparatus such as e.g. a coating robot on or be grown, which does not serve for dosing, but in a conventional manner other purposes such as as an intermediate or reservoir.
  • a coating apparatus such as e.g. a coating robot on or be grown, which does not serve for dosing, but in a conventional manner other purposes such as as an intermediate or reservoir.
  • the number of on or in a metering device or a container of a coating device built or attached color valves for a corresponding number of color inputs depends on the particular case, but is usually more than two and preferably more than four.
  • Coating device shown comprises a metering device 10, at the output 11 of the usual main needle valve od. The like.
  • a (not shown) atomizer for color material such as an electrostatic rotary atomizer or air atomizer is connected.
  • the output 11 is a plurality, in the illustrated example, six color inputs of the metering device 11 in common, each having a color selection automatically controlled by the parent control program color valve FV1, FV2, etc. to FV6.
  • the metering device 10 can be of any type per se, that is one of the known for coating systems metering systems including piston dispensers and gear metering or working with color printing and ink quantity control systems, etc. Volumetric metering devices and in particular piston dispensers are preferred in the invention.
  • the color lines 13 for the most frequently used in coating operation or high-runner colors (labeled 2 to 6) connected to the paint valves FV2 to FV6 of the metering device 10, which fed, for example, as spur lines of the usual in coating lines ring lines be or even be designed as a loop.
  • One of the color valves, here FV1 is connected via a color line 15 to the output of an external color changer 12 and serves to separate the high-runner color-changing region from the low-runner color changer 12.
  • the color changer 12 can have explained above conventional modular block design with a central channel to which the paint lines 14 are connected via the color valves of the color changer for less frequently needed or low-runner colors. Preferred embodiments of the color changer 12 will be described below with reference to FIG Fig. 3 described.
  • the metering device 10 and / or the paint valves FV1 to FV6 can preferably be located in the atomizer or movable with it in its vicinity, in particular between the atomizer and the wrist of a painting robot or in its forearm.
  • the paint valves are preferably attached to the metering device 10 (piston dispenser, storage container, metering pump or, if appropriate, the measuring cell or the color pressure regulator known per se metering systems, etc.) or incorporated therein.
  • the external color changer 12 can be located at a location which, although it is intended to be as close as possible to the atomizer in terms of color change losses, but otherwise is largely arbitrary. For dynamic and space reasons, for example, a location on or in the rear robot arm may be expedient if an arrangement further down can not be realized.
  • the metering device is formed by a piston dispenser or a volumetric Dösierpumpe eg with an electric drive motor
  • the metering can be outside the metering pump (for example, as in EP 1000667 B).
  • the metering drive can also be installed in the piston dispenser or in the metering pump.
  • the ink supply according to the invention is suitable for any atomizer, in particular also for electrostatic atomizers, which is known to charge the coating material to a high voltage potential, for example of the order of 100 kV.
  • located in the atomizer sensors and actuators including the metering device and its electrical metering drive in operation are at the high voltage potential of the atomizer, as well as possibly provided instead of the usual air turbine electric drive motor of the bell cup, if it is a rotary atomizer ,
  • the dosing drive lying at high voltage potential and possibly also lying on this potential electric bell cup motor can be supplied by a located at least with its secondary coil assembly in the atomizer isolation transformer with electrical power.
  • the isolation transformer forms between its primary and secondary circuits a high voltage insulation route and thus separates the supplied by him, located in the atomizer consumers including the two motors galvanically leading from the atomizer in the electrical power supply
  • control and sensor signals of the actuators and sensors of the atomizer can be transmitted floating in or out of the atomizer, for example, optically or via radio.
  • the external signals controlling the metering drive can also be transmitted together with other signals via a common cable or radio link, etc.
  • the operation of the usual main needle valve or other output or main valve of the atomizer can be controlled by the pressure generated at the output (11) of the main valve upstream of the metering device.
  • the main valve is thus opened by the pressure of the metering device, as soon as and as long as a corresponding pressure is present, and automatically closed in the absence of pressure.
  • the principle of operation here corresponds to that of a paint control system commonly used in coating systems, as described, for example, in DÜRR / BEHR Technical Handbook, Introduction to the Technology of car painting, 04/1999 - 28.04.1999, chap.
  • Color pressure regulator or off EP 1 376 289 B1 is known, the entire contents of which are hereby incorporated into the disclosure of the present application.
  • a color pressure regulator (which need not be a "regulator” in the sense of a closed loop) according to the invention can in principle replace the piston drive conventional main needle valves and its external control, the valve is not opened by control air, but by the color printing itself.
  • the main valve of the atomizer or other application device preferably consist of a needle valve or a ball or other valve for the coating material held by spring force in the closed position and opened by acting against the spring force pressure of the coating material, for example via a membrane becomes as soon as this pressure reaches a certain value, which can be set fixed or changeable.
  • control input of the main valve is connected to the output of the described metering device.
  • a piston dispenser 20 which consists essentially of a cylinder 21, a piston 23 displaceable in the cylinder of the piston rod 22 and a (not shown) metering drive.
  • the components of the piston dispenser 20 may consist of high voltage reasons of insulating material and to improve the dosing of a ceramic material.
  • the dosing drive can usually contain an electric motor moving the piston rod, which is controlled in a manner known per se such that the instantaneous amount of the applied coating material can be changed as required by changing the piston speed during the coating process.
  • piston dispensers operating on this principle are off EP 1384885 Federation WO 93/23173 known.
  • the piston dispenser 20 has a plurality of, in the illustrated example, five color inputs E1 to E5, each having a color valve FV1 'to FV5' and thus connected to one of five color lines 13 'for different high-runner colors.
  • An additional, also provided with a valve VV input E6 is provided for introducing a serving as a rinsing agent diluter V and also for cleaning it cylinder 21 serving pulse air PL.
  • the cylinder 21 has an output A with an output valve VA, to which a leading to the main needle or output valve of the atomizer output line of the piston meter is connected.
  • the paint valves FV are preferably mounted on or built into the cylinder bottom 24 of the piston dispenser, as indicated by the dashed line 24 '. Accordingly can also be the purge valve VV and / or the output valve FA attached or installed.
  • the piston is usually not driven by an electric motor, but in the filling direction of the coating material and in the discharge direction of a pressure medium such as compressed air.
  • piston dispenser 20 for alternate operation of the cylinder areas separated by the piston 23 according to FIG EP 1666158 A2
  • an arrangement corresponding to the inputs E1 to E6 and the output A with the associated valves could be provided in the cylinder bottom of the piston dispenser opposite the cylinder bottom 24.
  • external color changer 12 for less needed colors could be the in Fig. 3 at (a) have shown schematically known design, as for example DE 19836604 A1 . DE 19846073 A1 or DE 19951956 A1 known per se. It consists essentially of color valves for the illustrated example twenty-four different colors, purge valves for pulse air PL and thinner V and a recirculation valve RF, which are connected to the central channel 30a of the color changer.
  • Fig. 3 at (b) shown schematically color changer 12b substantially corresponds to the embodiment according to Fig. 2 said EP 1502657 A2 the entire contents of which are hereby incorporated into the present description.
  • the two channel sections are denoted by 30b1 and 30b2 and connected in series by the controlled shut-off valve 16b.
  • To the designated with 1 to 6 color valves of the section 30b1 the more frequently required colors are connected to the other color valves of section 30b2, however, the less frequently required colors. This results in practice lower color change losses than in the standard color changer according to Fig. 3 (a) ,
  • the in Fig. 3 at (c) shown color changer 12c which is substantially the embodiment according to Fig. 3 or Fig. 4 of the EP 1502657 A2 can correspond, consists of the two parallel channel sections 30c1 and 30c2, which are common to the illustrated color, flushing and return valves and are connected via a respective controllable shut-off valve 16c1 and 16c2 with the output line of the color changer.
  • This color changer has particular advantages in addition to low color change losses such as relatively small footprint and low weight or a larger number of connectable colors for a given size.
  • the color changer is also suitable for A / B operation. This makes it possible to achieve a consistently short color change time for all selectable colors.
  • Fig. 2 For example, the color valves for the high-runner colors can be placed almost flush, ie without loss of color, on the inner wall of the cylinder of the piston dispenser or, if appropriate, of its intermediate storage container (cf. Fig. 7 ).
  • Fig. 4 shows a schematic opposite Fig. 2 slightly modified embodiment of the invention, in which the color valves FV43 connected to the high-runner lines 43 open into a common channel 41, which in turn leads into the cylinder of the piston dispenser or possibly its intermediate storage container 40.
  • the color line 45 is connected from the output of the external color changer 42 for the low-runner colors on one of the two paint supply systems for high-runner or low-runner colors separating shut-off valve V45.
  • the color line 45 may be an integral part of the usual central channel of the color changer 42 and pass into the channel 41 or form this (see. Fig. 8 ).
  • the color changer 42 may be, for example, the arrangement to be taken from the color valves F1 to Fn for the n different available low-runner colors, the recirculation valve RF2, the purge valves V1 and PL1 for thinner or pulse air and the illustration between the color and Return valves on the one hand and the purge valves on the other hand arranged shut-off valve SPVFW included.
  • the low-runner color changer can also follow one of the arrangements Fig. 3 correspond.
  • pFW is the pressure of the coating material in the common low-runner colors common channel of the color changer and thus the color line 45 measuring color pressure sensor to improve the process reliability.
  • the color loss-rich central channel of the color changer 42 only has to be filled with this color during painting with one of the low-runner colors.
  • the color changer 42 is disconnected with the shut-off valve V45.
  • Fig. 5 schematically an embodiment of the invention is shown, in which the metering device is formed by a Zahnraddosierpumpe 50, which differs from conventional metering pumps in that it has several inputs to which via respective color valves FV53 the color lines 53 for the high-runner colors and connected in parallel thereto via the valve V55, the color line 55 from the output of the separate color changer 52 for the low-runner colors.
  • the color valves FV53 with which the inputs for the high-runner colors are provided, can preferably be placed directly on the metering gear wheels of the metering pump 50 almost without loss of color.
  • the paint valves may preferably be designed as needle valves per se conventional type.
  • the shut-off valve V55 for the low-runner colors may be installed in or upstream of the input of the metering pump 50.
  • the color changer 52 can after Fig. 4 match or even one of the color changers after Fig. 3 ,
  • the low-runner color changer according to 4 and FIG. 5 can also for embodiments according to Fig. 1 and Fig. 2 be used.
  • an elongated paint container 60 is shown, which may be, for example, the storage container of the aforementioned known metering device or instead also according to a piston dispenser Fig. 2 can act.
  • the example, four or five high-runner valves FV63 are shown as parallel to the container axis side by side in the end wall 69 of the container 60, possibly in addition to another valve VF65 for the low-runner colors.
  • the associated color lines controlled by these valves may conveniently be connected by radial paint connections (not shown) distributed over the circumference of the container.
  • the shut-off valve (V45 in.) Belonging to the low-runner line (not shown) Fig. 4 ) may also be designed differently than the valves FV63 and be arranged elsewhere.
  • the container 60 may be at least partially circular cylindrical or with a different cross section and contain a displaceable piston.
  • the high-runner color valves FV 63, the signal-controlled needle valve units of the illustrated per se conventional design can be, preferably so with their needles 73 in the end wall 76 (69 in Fig. 6 ) used, the needle ends 78 are at least approximately in the plane of the inner side 71 of the end wall 76 with the valve closed, so aligned with this level.
  • the conical valve seat of the color valve FV63 can be seen.
  • the opening 77 one of the radially extending from the periphery in the end wall 76 color ports for the opened or closed by the color valves FW63 high-runner color lines (13 in Fig. 1 ) are used.
  • valve assembly is also a radial installation or mounting of the paint valves FV63 (valves FV in Fig. 1 respectively. Fig. 2 ) possible, for example, similar to one of the embodiments according to 8 to 14 ,
  • the high-color runner valves in the described embodiments of the invention should be as small as possible so that as many valves as possible can be accommodated in the available limited space.
  • a built-in or attached valve for the connection of low-runner colors eg valve FV1 in Fig. 1 .
  • the color valves of the remote or separate low-runner color changer can be built larger. The larger size has the advantage that with a given color printing, the flow openings larger and the Lackfcher beau can be correspondingly smaller and therefore there is a lower risk of damage to the paint material.
  • valve assembly is according to an embodiment according to Fig. 4 suitable in which the illustrated five high-runner color valves FV83 radially around the central channel 85 of the low-runner color changer (42 in Fig. 4 ) are distributed and with the ends 88 of their valve needles adjacent to the circumference of the central channel 85.
  • the paint valves FV83 can here be screwed in a radial plane common to their needle axes in the circumference of a wall member 89 which may form an end wall of said container or may be attached to the actual end wall. Between the paint valves FV83, the associated color connections 84 for the high-runner colors are shown to be distributed over the circumference of the wall element 89.
  • the illustrated star-shaped valve arrangement other arrangements known from color changers are also conceivable.
  • Fig. 9 shows a convenient arrangement of a container 90 with the high-Runner valves and associated radial paint connections 97 containing end wall 69 and 76, for example according to Fig. 7 and with the upstream low-runner color changer 92 in the forearm 91 of a painting robot.
  • the color changer 92 has the modular block design typical of color changers in coating systems and is constructively mounted in close proximity to the end wall 69.
  • a very similar arrangement is also with the embodiment according to Fig. 8 possible.
  • the arrangement of the container 90 next to a (only partially visible) piston dispenser 99 and other details are shown in the drawing and can otherwise the in EP 1 772 194 A2 described system, so that a more detailed description is unnecessary.
  • Fig. 10 shows a possibility for the structural arrangement of the high-runner color valves FW103 at the paint inlet 105 of a gear-wheel metering pump 100 according to the schematic representation in Fig. 5 .
  • the two Dosier leopard scholar 101 and the drive shaft 102 correspond to conventional constructions.
  • the input range of the metering pump according to the invention is shown only incomplete.
  • the invention can be installed, for example as shown radially into the front plate unit of the metering pump 100, not shown.
  • Also controlled by the color valves FW103 high-runner color lines are not shown.
  • the color input 105 can be connected to the separate low-runner color changer according to the invention via a shut-off valve V55 (FIG. Fig. 5 ), which may be formed by the valve V105 or disposed elsewhere.
  • 106 designates the color output of the metering pump 100.
  • Fig. 11 if such a container 110 is shown, which may be cylindrical as shown or may have another, preferably elongated shape with a longitudinal axis.
  • Automatically signal-controlled needle valves FV113 are distributed around the circumference of the container 110 in the illustrated example 18, whose valve needles 114 can lie transversely to the longitudinal axis of the container 110 in a common radial plane.
  • the needle valves FV113 may be inserted radially into a flange 112 enclosing, for example, the cylindrical wall 111 of the container 110 and penetrating it with its needles 114.
  • the ends 115 of the valve needles resting against the valve seat can be flush or nearly flush with the inner surface 116 of the container wall 111, so that similarly small color change losses occur, as in the exemplary embodiments, for example Fig. 7 . Fig. 8 and Fig. 10 , The leading into the container 110, controlled by the color valves FV113 color lines are not shown.
  • Coating systems are also conceivable in which the color inputs of the container 110 arranged, for example, on a coating robot are docked in a manner known per se with quick-coupling valves to corresponding stationary paint connections of a paint booth.
  • Fig. 12 is different from that Fig. 11 essentially only in that the needles 124 of the illustrated example 12 color valves FV123 are not in a radial plane, but are arranged inclined relative to the tank axis perpendicular to the radial plane, so that the in Fig. 13 recognizable oblique arrangement of valves FV123 results.
  • the valve seats and thus with the valve closed, the needle ends in the immediate vicinity of the inner surface 126 of the container 120 with the advantage correspondingly minimized color loss during color change.
  • FIGS. 12 and 13 By displacing or spacing two or more groups of color valves distributed annularly around the periphery of the container along the container axis, as in FIG Fig. 14 is shown, you can connect a correspondingly larger number - in the illustrated example 30 - of valve-controlled paint lines for different selectable colors to the container 140.
  • the illustrated two groups of color valves FV143 and FV143 'can, as in FIGS. 12 and 13 be arranged obliquely, expediently with mutually opposite inclination angle with respect to the radial plane.
  • One or each group of color valves may also be as in Fig. 11 be arranged in a common radial plane perpendicular to the container axis.
  • the embodiment according to Fig. 14 those after FIGS. 12 and 13 correspond.

Landscapes

  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (15)

  1. Dispositif de revêtement pour un revêtement en série de pièces avec des nuances différentes, avec
    - un pulvérisateur qui comprend un élément d'application pour le matériau de revêtement ;
    - un dispositif de dosage (10, 20) disposé en amont de l'élément d'application, se trouvant plus particulièrement dans le pulvérisateur ou à proximité de celui-ci, grâce auquel la quantité momentanée du matériau de revêtement appliqué pendant l'application peut être modifiée de manière contrôlée ;
    - un premier groupe de plusieurs conduites de couleurs (13, 13') qui conduisent des matériaux de revêtements sélectionnables avec différentes nuances nécessaires relativement souvent au dispositif de dosage (10, 20) disposé en amont de l'élément d'application, la sortie (11, A) du dispositif de dosage (10, 20) étant commun aux matériaux de revêtement provenant des conduites de couleurs (13, 13') du premier groupe ; et
    - des vannes de couleurs (FV) commandées à l'aide de signaux permettant de sélectionner les matériaux de revêtement parmi les conduites de couleurs (13, 13') du premier groupe ;
    - les vannes de couleurs (FV) commandées du premier groupe de conduites de couleurs (13, 13') étant disposées dans le pulvérisateur ou étant montées de manière fixe, avec le pulvérisateur, sur celles-ci, ou étant disposées entre le pulvérisateur et une articulation ou dans un bras mobile d'un automate de mouvement programmable permettant de déplacer le pulvérisateur ;
    - et un changeur de couleurs (12), disposé à une certaine distance du pulvérisateur, étant prévu, qui comprend une pluralité de vannes de couleurs auxquelles sont raccordées des conduites de couleurs (14) d'un deuxième groupe pour matériau de revêtement avec des nuances rarement nécessaires et dont la sortie (15) commune aux conduites de couleurs (14) du deuxième groupe
    - est raccordée parallèlement aux conduites de couleurs (13, 13') du premier groupe sur son dispositif de dosage (10, 20) ou sur un récipient (90) du dispositif de dosage
    - ou conduit parallèlement au dispositif de dosage (10, 20) vers l'élément d'application du pulvérisateur.
  2. Dispositif de revêtement selon la revendication 1, caractérisé en ce que
    a) le dispositif de dosage (10) est un doseur à piston (20) ou comprend un doseur à piston (99) dont le moteur d'entraînement peut être commandé pour modifier la vitesse du piston pendant l'application et en ce que le doseur à piston (20) ou un récipient (90) disposé en amont de celui-ci comprend, pour chaque conduite de couleur (13') du premier groupe, une entrée (E1-E5) correspondante, ou
    b) le dispositif de dosage est ou comprend une pompe de dosage à roues dentées (40, 100).
  3. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé en ce que
    a) les conduites de couleurs (13) du premier groupe passent chacune par une vanne de couleur (FV) pouvant être commandée pour le choix des couleurs et arrivent au dispositif de dosage (10, 20) ou sont raccordées à une conduite commune conduisant au dispositif de dosage, et/ou
    b) le dispositif de dosage (10, 20) est disposé dans le pulvérisateur ou monté de manière amovible avec le pulvérisateur sur celui-ci, et/ou
    c) le dispositif de dosage (10, 20, 90) est disposé entre le pulvérisateur et une articulation ou dans un bras mobile (91) d'un robot de revêtement déplaçant le pulvérisateur ou d'autres automates de mouvement programmables.
  4. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé en ce que
    a) le changeur de couleur (12, 92) du deuxième groupe est disposé dans ou sur un bras (91) d'un robot de revêtement déplaçant le pulvérisateur ou d'autres automates de mouvement programmables, et/ou
    b) le changeur de couleur (12b, 12c) du deuxième groupe comprend au moins deux portions de conduites (30b1, 30b2 ; 30c1, 30c2), dans lesquelles débouchent plusieurs vannes de couleurs commandées pour des matériaux de revêtements avec différentes nuances sélectionnables, et dont au moins une portion de conduite peut être rincée par au moins une autre portion de conduite, les portions de conduites étant reliées entre elles par une vanne (16b ; 16c1, 16c2) pouvant être fermée de manière contrôlée et/ou avec une conduite de sortie du changeur de couleur (12b, 12c).
  5. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé en ce que les vannes de couleurs (FV), commandées à l'aide de signaux pour le choix des couleurs, des conduites de couleurs du premier groupe sont montées ou insérées sur ou dans le dispositif de dosage (10, 20) ou un réservoir (90) du dispositif de dosage.
  6. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé en ce qu'un moteur d'entraînement électrique du dispositif de dosage (10, 20) est disposé dans le pulvérisateur ou monté de manière fixe sur celui-ci.
  7. Dispositif de revêtement selon l'une des revendications précédentes, avec un pulvérisateur électrostatique, caractérisé en ce que
    a) le dispositif de dosage (10, 20) et/ou un entraînement de dosage électrique se trouvent, lors du fonctionnement, sur le potentiel de haute tension du pulvérisateur, l'entraînement de dosage étant alimenté, de manière séparée en terme de potentiel, par un transformateur de séparation disposé dans le pulvérisateur ou à proximité de celui-ci, qui comprend un chemin d'isolation à haute tension, et/ou
    b) dans le pulvérisateur ou à proximité de celui-ci, se trouvent deux dispositifs de dosage (10, 20) parallèles, séparés entre eux, et fonctionnant en alternance, sélectivement ou en même temps, et/ou
    c) pour le fonctionnement A/B parallèlement au système constitué du dispositif de dosage (10, 20) et des vannes de couleurs (FV) commandées des nuances fréquemment utilisées, un autre système correspondant, constitué d'un dispositif de dosage et de vannes de couleurs commandées et/ou parallèlement au changeur de couleurs (12) du deuxième groupe, un autre changeur de couleur correspondant étant prévus, les vannes de couleurs des deux systèmes ou les deux changeurs de couleurs étant raccordés chacun à des conduites de couleurs pour les mêmes nuances.
  8. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé en ce que le dispositif de dosage (10) est un doseur à piston (20) entraîné par un moteur, avec un cylindre (21) ou comprend un tel doseur, dont les parties séparées par le piston (23) comprennent chacune plusieurs entrées (E1-E5) commandées pour le matériau de revêtement avec différentes nuances sélectionnables et chacune une sortie (A) commandée reliée à la vanne de sortie du pulvérisateur.
  9. Dispositif de revêtement selon la revendication 8, caractérisé en ce que les entrées (E1-E5) d'une partie se trouvent sur ou dans une des extrémités frontales (24) du cylindre (21) et les entrées de l'autre partie se trouvent sur ou dans l'extrémité frontale opposée du cylindre (21).
  10. Dispositif de revêtement selon l'une des revendications précédentes, avec un récipient, caractérisé en ce que le récipient (60, 110) comprend une pluralité d'entrées à chacune desquelles est raccordée ou peut être raccordée une parmi plusieurs conduites de couleurs pour du matériau de revêtement de différentes couleurs et en ce que les entrées présentent, dans le récipients, des vannes (FV) insérées dans le récipient ou montées sur le récipient, qui peuvent être commandées par des signaux pour la sélection du matériau de revêtement pouvant être amené au récipient.
  11. Dispositif de revêtement selon la revendication 10, caractérisé en ce que les vannes (FV) sont réparties sur la circonférence du récipient (110).
  12. Dispositif de revêtement selon l'une des revendications précédentes, avec un cylindre (21, 60) et un piston coulissant à l'intérieur, caractérisé en ce que
    a) au moins l'espace du cylindre (21) se trouvant sur un côté du piston (23) comprend une pluralité d'entrées (E1-E5) à chacune desquelles est raccordée ou peut être raccordée une conduite de couleur (13') d'un groupe de conduites de couleurs prévues pour des matériaux de revêtement de différentes couleurs, et/ou
    b) les entrées (E1-E5) comprennent des vannes (FV) insérées dans le cylindre (21) ou montées sur le cylindre (21), qui peuvent être commandées à l'aide de signaux pour la sélection des matériaux de revêtement pouvant être amenés au dispositif de dosage (20), et/ou
    c) les vannes (FV) sont constituées d'unités de vannes à aiguilles (FV63, FV83) commandées de manière automatique.
  13. Dispositif de revêtement selon la revendication 12, caractérisé en ce que
    a) les aiguilles (73) des vannes (FV63) traversent, parallèlement à l'axe longitudinal du cylindre à piston ou du récipient, une paroi d'extrémité (76) du cylindre à piston (60) ou du récipient et leurs extrémités (78) sont alignées, lorsque la vanne est fermée, au moins approximativement avec le côté intérieur (71) de la paroi d'extrémité (76), ou
    b) les vannes (FV83) sont insérées radialement dans la circonférence d'un élément de paroi (89) du cylindre à piston et les extrémités (88) de leurs aiguilles sont adjacentes, lorsque la vanne est fermée, approximativement en affleurement avec un canal central axial (85), et/ou
    c) des raccords (77, 84, 97) sont insérés, pour les conduites commandées par les vannes (FV), radialement dans la circonférence de la paroi d'extrémité (69, 76) ou de l'élément de paroi (89).
  14. Dispositif de revêtement selon l'une des revendications précédentes, caractérisé par un pulvérisateur avec une vanne principale pour le matériau de revêtement, qui est maintenu par une force de ressort dans la position de fermeture et est ouvert par la pression d'un fluide de commande agissant à l'encontre de la force de ressort au niveau d'une entrée de commande, l'entrée de commande de la vanne principale étant actionnée par la pression du matériau de revêtement.
  15. Dispositif de revêtement selon la revendication 14, caractérisé en ce que
    a) la vanne principale est ouverte par une membrane actionnée par la pression du matériau de revêtement, et/ou
    b) l'entrée de commande de la vanne principale est raccordée à la sortie du dispositif de dosage pour le matériau de revêtement.
EP07819668.0A 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage Active EP2101925B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07819668T PL2101925T3 (pl) 2006-12-12 2007-11-07 Urządzenie powlekające z zespołem dozowania
EP14003987.6A EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006058562A DE102006058562A1 (de) 2006-12-12 2006-12-12 Beschichtungseinrichtung mit einer Dosiervorrichtung
DE102007029195A DE102007029195A1 (de) 2007-06-25 2007-06-25 Beschichtungseinrichtung mit einer Dosiervorrichtung
PCT/EP2007/009658 WO2008071273A2 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP14003987.6A Division EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC
EP14003987.6A Division-Into EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC

Publications (2)

Publication Number Publication Date
EP2101925A2 EP2101925A2 (fr) 2009-09-23
EP2101925B1 true EP2101925B1 (fr) 2015-01-07

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EP14003987.6A Active EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC
EP07819668.0A Active EP2101925B1 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage

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US (1) US8333164B2 (fr)
EP (2) EP2853312B1 (fr)
JP (1) JP5595734B2 (fr)
BR (1) BRPI0719725B1 (fr)
ES (2) ES2776187T3 (fr)
MX (1) MX2009006196A (fr)
PL (1) PL2101925T3 (fr)
RU (1) RU2427432C2 (fr)
WO (1) WO2008071273A2 (fr)

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DE10233633B4 (de) 2002-07-24 2005-09-01 Dürr Systems GmbH Vorrichtung zum Dosieren oder Fördern eines auf Hochspannungspotential aufgeladenen Beschichtungsmittels in einer Beschichtungsanlage
DE10309143B4 (de) 2003-02-28 2007-10-11 Eisenmann Lacktechnik Gmbh & Co. Kg Sensoreinrichtung an einer unter hoher Spannung stehenden Förderleitung
CN2629831Y (zh) 2003-06-06 2004-08-04 中国农业大学 回流式无级变量喷头装置
ATE440674T1 (de) 2003-07-28 2009-09-15 Duerr Systems Gmbh Sprühvorrichtung mit farbwechsler zum serienweisen beschichten von werkstücken
EP1502659B1 (fr) 2003-07-28 2006-02-22 Dürr Systems GmbH Ensemble de valves de changement de couleur d'une installation de revêtement
DE10335358A1 (de) 2003-08-01 2005-03-10 Duerr Systems Gmbh Beschichtungsmittelwechsler
JP4272981B2 (ja) * 2003-12-25 2009-06-03 本田技研工業株式会社 静電塗装装置
DE102004058053B4 (de) * 2004-12-01 2006-12-28 Dürr Systems GmbH Verfahren und Kolbendosierer zur dosierten Materialversorgung einer Beschichtungsvorrichtung
DE102004058054A1 (de) 2004-12-01 2006-06-08 Dürr Systems GmbH Automatisch gesteuerte Beschichtungsmaschine mit einem Behälter für das Beschichtungsmaterial
EP1772194B1 (fr) 2005-10-07 2019-01-09 Dürr Systems AG Dispositif d'alimentation pour un agent de revêtement et correspondant procédé de fonctionnement
DE102006022570A1 (de) 2006-05-15 2007-11-29 Dürr Systems GmbH Beschichtungseinrichtung und zugehöriges Betriebsverfahren
DE102006045631A1 (de) 2006-09-27 2008-04-10 Dürr Systems GmbH Elektrostatische Zerstäuberanordnung

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WO2008071273A2 (fr) 2008-06-19
MX2009006196A (es) 2009-07-09
JP5595734B2 (ja) 2014-09-24
RU2427432C2 (ru) 2011-08-27
PL2101925T3 (pl) 2015-06-30
WO2008071273A3 (fr) 2008-10-16
US8333164B2 (en) 2012-12-18
RU2009126573A (ru) 2011-01-20
JP2010512241A (ja) 2010-04-22
EP2853312A3 (fr) 2015-10-14
BRPI0719725A2 (pt) 2014-12-09
EP2101925A2 (fr) 2009-09-23
EP2853312A2 (fr) 2015-04-01
ES2776187T3 (es) 2020-07-29
ES2534328T3 (es) 2015-04-21
US20100012025A1 (en) 2010-01-21
EP2853312B1 (fr) 2020-01-01
BRPI0719725B1 (pt) 2020-04-14

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