EP2101925A2 - Dispositif de revêtement équipé d'un dispositif de dosage - Google Patents

Dispositif de revêtement équipé d'un dispositif de dosage

Info

Publication number
EP2101925A2
EP2101925A2 EP07819668A EP07819668A EP2101925A2 EP 2101925 A2 EP2101925 A2 EP 2101925A2 EP 07819668 A EP07819668 A EP 07819668A EP 07819668 A EP07819668 A EP 07819668A EP 2101925 A2 EP2101925 A2 EP 2101925A2
Authority
EP
European Patent Office
Prior art keywords
color
coating
valves
metering
atomizer
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.)
Granted
Application number
EP07819668A
Other languages
German (de)
English (en)
Other versions
EP2101925B1 (fr
Inventor
Frank Herre
Rainer Melcher
Manfred Michelfelder
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39166299&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2101925(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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 EP14003987.6A priority Critical patent/EP2853312B1/fr
Priority to PL07819668T priority patent/PL2101925T3/pl
Publication of EP2101925A2 publication Critical patent/EP2101925A2/fr
Application granted granted Critical
Publication of EP2101925B1 publication Critical patent/EP2101925B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 the series coating of workpieces with different shades as well as dosing devices and containers which can be used for this purpose.
  • these are the series painting of vehicle bodies and their parts with electrostatic or other atomizers including rotary atomizers, air atomizers, etc., which apply the coating material using an automatically controlled metering device.
  • dosing device preferably volumetric dosing devices such as e.g. Gear pumps or piston dispensers, which can be driven by a controllable motor, that during the coating, the applied by the atomizer amount of material (instantaneous flow) can be changed as needed, for example, depending on the respective workpiece area and other parameters, such. in EP 1 314 483 A2 or DE 691 03 218 T2.
  • the volumetric metering is typically done 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 in the housing of gear metering pumps, and in electrostatic painting equipment where high voltage insulation between the atomizers and their grounded supply system is required, the discrete paint delivery operation of a piston meter easily achieves the necessary electrical isolation. Further advantages will be explained later.
  • EP 1 772 194 A2 it may also be useful to precede the piston dispenser of an electrostatic coating device with a container serving as a lacquer buffer, which is already filled with the new ink to reduce the required color change times during a color change, while still using the previous color from the piston dispenser is painted.
  • 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.
  • the main needle valve of the atomizer serve as an actuator of a control circuit for controlling the amount of ink or outflow 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 known, for example, from DE 198 36 604 A1 and DE 198 46 073 A1, while a basically similar color changer for powder coating is described in DE 601 03 281 T2.
  • the rinsing of color changers, for example, DE 199 51 956 Al deals.
  • Such color changer are typically upstream of the known gear or Kolbendosiervorraumen or possibly the mentioned paint storage container.
  • a color changeover valve arrangement in the atomizer also referred to in practice as the ICC technology (Integrated Color Changer)
  • ICC technology Integrated Color Changer
  • 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.
  • An intimate low reduction results for the flushing agent losses.
  • the color change time can typically be halved, typically from 12 to 6 seconds, with the result of an increase in coating machine capacity of about 5-10% or, for example, 30-60 vehicles per day.
  • the application organ, for each of these colors may be provided its own separate metering device, which consequently does not need to be rinsed in a color change, and the possibility exists to connect a larger number of rarely required colors (so-called low-runner) via an external color changer, as described in the German patent application 10 2006 022 570.8 from 15.05.2006 and in the patent application PCT / EP2007 / 003874 from 02.05.2007, the entire contents is hereby incorporated into the present description.
  • the number of selectable frequently required colors (high-runner) is also limited here by the space available in the atomizer, the implementation of the paint tubes by the hand axis of the painting robot and the upstream of dosing devices by the space required for their cultivation on the robot.
  • 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. However, they have the fundamental disadvantage of unavoidable color losses when flushing the more or less large central channel with each color change. 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 larger the cross section of the central channel, the greater the color change loss, the greater the amount of color through the color changer in a shorter time To be able to guide, as it may be desired for various reasons (special color supplies, container technology, higher paint quantities, shorter cycle times of successive workpieces, higher viscosities, etc.). In addition, 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.
  • color change systems operating according to the docking principle were developed, in which the color lines provided for the different color shades with mechanically movable valve elements can be coupled to a line leading to the atomizer (EP 1 245 295 A2 DE 100 64 065 A1 or DE 601 11 607 T2).
  • atomizer EP 1 245 295 A2 DE 100 64 065 A1 or DE 601 11 607 T2
  • these color interfaces it is possible to achieve a savings in color (typically around 10 ml for each color change) compared to the usual color changers. but they have several practical disadvantages such as elaborate motion control to approach the hitching positions, high maintenance requirements, flushing the interface, drying paint on the interface, leaks, etc.
  • Color pressure regulator arranged, which provide for a form pressure 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.
  • EP 1 502 658 A1 it is an object of the invention to provide a coating device or indicate reversible 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.
  • Central channel is used, also eliminates its typical color change losses of material and time.
  • color change losses of a separate typical color changer for less frequently required colors are reduced because its length is shortened by eliminating the most commonly needed colors accordingly, if instead a correspondingly larger number of selectable colors should be connected.
  • the color valves for the high-runner colors are also possible to arrange only the dosing siervoriques in the atomizer, the color valves for the high-runner colors, however, only in the vicinity of the nebulizer grow, preferably between the nebulizer and the wrist of the nebulizer moving painting robot
  • the color valves can form a typical color changer in this case as well.
  • the metering device and / or the color valves may be more expedient to arrange the metering device and / or the color valves, possibly in a conventional color changer, also in the vicinity of the atomizer, but somewhat further away from it, 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. can be arranged, as is possible in many cases for the High-Runner-Farbventile, 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 into the Versor- Supply system ("reflow") and / or almost complete consumption of the respective color in the line when Applizie ⁇ ren ("pushout”) avoid.
  • the output of the separate color changer for rare Benö ⁇ -saturated colors is preferably parallel to the color lines of the most commonly used high-Runner colors to a separate additional input of the metering device, or possibly connected to their 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 at a largely arbitrary distance outside the atomizer be, ie 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 color changer and its output line and during the preparation for the next color (if necessary, 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., for example, EP 1314483 A).
  • the two matching supply branches (A and B) are connected in parallel to the atomizer, in preferred embodiments of the invention described here thus to two inputs of the metering device (possibly its storage container) or otherwise via its own metering device to the main needle valve of the atomizer.
  • a / B operation is also suitable for the According to the invention, high-runner ink supply is possible, for which purpose a further arrangement comprising a metering device and controlled color valves is provided parallel to the arrangement of the metering device and the controlled color valves of the frequently required color tones, the color valves of the two arrangements also being provided here Color cables for the same color tones are connected.
  • a single piston dispenser designed for alternating operation can in principle also be used according to EP 1666158 A2, ie a piston dispenser with a cylinder driven by a motor, the areas separated by the piston each having a plurality of controlled inputs for the selectable different shades and one each have controlled output connected to the main needle or other output valve of the atomizer.
  • any color changer for less than the z. B. 7 or fewer high-runner colors required colors may suitably contain at least two line sections, open into each of which several controlled color 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, wherein 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 changers are known per se from EP 1502657 A2 and allow for the reduction of color change losses a meaningful further differentiation between colors often required, with less frequently needed colors on the farther away from the color output a line section of the color changer and the other colors located at the color output be connected to another line section.
  • two separate parallel metering devices are provided in the atomizer or in its vicinity, 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 Kolbendosie- rer 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 for this purpose.
  • the piston dispenser according to the invention or possibly its upstream Speicherbefflel- ter has in contrast to the known constructions not only one or at most (as in the case of said EP 1666158) two inputs, but for each of the selectable frequently required shades at least one own input and at least a common output for the color materials that can be fed.
  • 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.
  • piston dispenser 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 the atomizer or in its vicinity located.
  • the piston dispenser is not located in the atomizer or in its vicinity located.
  • the color-change valves may be incorporated into a gear metering pump of conventional type be or 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 to be installed or grown, which is not used for dosing, but in a conventional manner other purposes, such as ter as an intermediate or Vorratsbefflel-.
  • a coating apparatus such as e.g. a coating robot to be installed or grown, which is not used for dosing, but in a conventional manner other purposes, such as ter as an intermediate or Vorratsbeffle-.
  • the number of color valves installed on or in a metering device or a container of a coating device for a corresponding number of color inputs depends on the particular individual case, but is generally more than two and preferably more than four.
  • Fig. 1 is a simplified schematic diagram of a coating device according to the invention
  • 2 shows a piston dispenser according to the invention
  • FIG. 3 shows three different color changers which can be used in a coating device according to the invention
  • FIG. 4 is a comparison with FIG 2 modified embodiment
  • FIG. 6 shows an expedient structural realization of the metering device according to FIG. 2;
  • FIG. 7 shows a radial section through the end wall of the device according to FIG. 6;
  • FIG. 8 shows an expedient structural realization of the metering device according to FIG. 4;
  • FIG. 9 shows the arrangement of a metering device, for example with a container according to FIG. 6 in the forearm of a painting robot;
  • FIG. 10 shows an expedient structural realization of the metering device and its valves according to FIG. 5;
  • FIG. 11 shows the installation of color valves in the circumference of an arbitrary container of a coating device
  • Fig. 12 is a modification of the embodiment of Fig. 11;
  • Figure 13 is a schematic sectional view of thewhosbei ⁇ game of Fig. 12.;
  • FIGS. 11 and 12 shows a further modification of the exemplary embodiments according to FIGS. 11 and 12.
  • the coating device shown in Fig. 1 includes a metering device 10, at the output 11 of the usual main needle valve od. Like. a colorant atomizer (not shown), such as e.g. an electrostatic rotary atomizer or air atomizer is connected.
  • the output 11 is a plurality of, in the illustrated example, six color inputs of the metering device 11 in common, which each have a for color selection automatically controlled by the parent control program color valve FVl, FV2, etc. to FV ⁇ .
  • the metering device 10 can be of any type per se, that is to say correspond to one of the metering systems known per se for coating systems, including piston feeders and gear metering pumps or systems which operate with color pressure and ink flow control. 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 FV ⁇ 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 FVl 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.
  • 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, 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 When the metering device is controlled by a plunger doser or a volumetric metering pump, e.g. is formed with an e- lectric drive motor, the metering can be outside the metering pump (for example, as in EP 1000667 B). In particular, however, 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 atomization. ber, which charge the coating material known to a high voltage potential, for example in the order of 100 kV.
  • sensors and actuators including the Dosiervor- direction and their 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 Rotationszerstäuber acts.
  • PCT / EP2007 / 008382 described lying at high voltage potential dosing 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 isolating transformer forms a high-voltage insulation path between its primary and secondary circuits, thereby galvanically isolating the consumers supplied by it, located in the atomizer, including the two motors from the electrical power supply line leading into the atomizer.
  • control and sensor signals of the actuators and sensors of the atomizer can also be transferred floating into or out of the atomizer, for example optically or via Wireless.
  • 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
  • Such a color printing regulator (which does not have to be a "regulator” in the sense of a closed control loop) can in principle replace the piston drive of conventional main needle valves and its external control, wherein the valve is not opened by control air, but by the color - Pressure itself.
  • the main valve of the atomizer or other application device preferably consist of a needle valve or from a ball or other valve for the coating material held by spring force in the closed position and by the GE against the spring force acting pressure Coating material is opened, for example via a membrane, as soon as this pressure reaches a certain value, which can be set fixed or changeable
  • the control input of the main valve is connected to the output of the described metering device se
  • a piston dispenser 20 is shown schematically, which consists essentially of a cylinder 21, a displaceable in the cylinder of the piston rod 22 piston 23 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 accuracy 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 so 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 according to this principle are known, for example, from EP 1384885 B and WO 93/23173.
  • the piston dispenser 20 has a plurality of, in the illustrated example, five color inputs E1 to E5, which each have a color valve FV1 'to FV5' and are thus connected to one of five color lines 13 'for different high-runner colors.
  • An additional, also provided with a valve VV input E ⁇ is provided for introducing a serving as a rinsing agent diluent 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 Ko- bendensierers 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 '. Accord- accordingly can also the flush valve VV and / or the output Sven ⁇ til FA on or be incorporated.
  • one of the color inputs such as E1 to E5 of the piston dipper may also (instead of a high-runner color line) be connected to that of an external one color changer, eg from the color Wechs ⁇ ler 12 to be connected one next color line for less frequently used colors in FIG.. Instead, however, could also lead the output line of an external color changer bypassing the piston meter 20 to the output valve of the atomizer.
  • the element 20 in FIG. 2 may also be a paint storage container upstream of the actual piston dispenser, for example according to EP 1 772 194 A2, whose piston is, as a rule, not driven by an electric motor, but in the filling direction from the coating material and in the discharge direction of a printing medium such as Compressed air.
  • the external color changer 12 for less frequently required colors provided in the preferred embodiments of the invention could have the known design shown schematically in FIG. 3 at (a), as described, for example, in DE 19836604 Al, DE 19846073 Al or DE 19951956 A1 is 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.
  • the color changer 12b shown schematically at (b) in FIG. 3 substantially corresponds to the exemplary embodiment according to FIG. 2 of said EP 1502657 A2, the entire contents of which are hereby incorporated into the present description.
  • the two channel sections are denoted by 30bl and 30b2 and connected in series by the controlled shut-off valve 16b.
  • the more frequently required colors are connected to the color valves of the section 30bl denoted by 1 to 6, while the colors required less frequently are connected to the other color valves of section 30b2.
  • This color changer has, in addition to minor color-change losses, particular advantages such as relatively small space allowed and light 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.
  • the color valves for the high-runner colors can be placed almost flush, that is to say without loss of color, on the inner wall of the cylinder of the piston dispenser or, if appropriate, of its intermediate storage container (see FIG. 7).
  • Fig. 4 shows schematically a comparison with Fig. 2 slightly modified embodiment of the invention, in which connected to the high-runner lines 43 color valves FV43 open into a common channel 41, which in turn into the cylinder of the piston dispenser or possibly his Intermediate storage container 40 leads.
  • the common channel 41 is separated by a two color supply systems for high-runner or low-runner colors
  • Shutoff valve V45 also connected the color line 45 from the output of the external color changer 42 for the low-runner colors.
  • 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, for example, the arrangement to be taken from the color valves Fl to Fn for the n different available low-runner colors, the return valve RF2, the purge valves Vl and PLl for thinner or pulse air and the sacredsconce 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 may also correspond to one of the arrangements according to FIG. 3.
  • the pressure of the coating tion 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 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 shows an exemplary embodiment of the invention in which the metering device is formed by a gear metering pump 50, which differs from conventional metering pumps in that it has a plurality of inputs to which the color lines 53 for the high-pressure valves are connected via respective color valves FV53. Runner colors and parallel thereto via the valve V55, the color line 55 from the output of the separate color changer 52 for the low-runner colors are connected.
  • 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 correspond to that of FIG. 4 or else one of the color changers according to FIG. 3.
  • the low-runner color changer according to FIG. 4 and FIG. 5 can also be used for exemplary embodiments according to FIG. 1 and FIG ,
  • an elongated paint container 60 is shown, which is, for example, the storage container of the aforementioned known metering device or instead may also be a piston dispenser according to FIG. 2.
  • 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 FIG. 4) belonging to the low-runner line (not shown) can also be embodied differently than the valves FV63 and 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 which may be signal-controlled needle valve units of the type shown per se, are preferably inserted with their needles 73 into the end wall 76 (69 in Fig. 6) 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.
  • one of the color ports radially leading from the circumference into the end wall 76 can be used for the high-runner color lines (13 in FIG. 1) opened or closed by the color valves FW63.
  • valves FV63 valves FV in FIG. 1 or FIG. 2
  • 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 limited space available.
  • a built-in or attached valve for the connection of low-runner colors eg valve FVl in Fig. 1.
  • the color valves of the remote or separate low-runner color changer can be made 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.
  • the valve arrangement shown in Fig. 8 is suitable for an embodiment of FIG. 4, in which the illustrated five high-runner color valves FV83 are radially distributed around the central channel 85 of the low-runner color changer (42 in Fig. 4) and with the ends 88 of their valve needles to the periphery of the central channel 85 adjacent.
  • 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.
  • the associated color connections 84 for the high-runner colors are shown as being 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 an expedient arrangement of a container 90 with an end wall 69 or 76 containing the high-runner valves and associated radial paint connections 97, 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 possible with the embodiment of FIG. 8.
  • 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 correspond to the system described in EP 1 772 194 A2, 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 metering pump 100 according to the schematic illustration in FIG. 5.
  • the two metering gears 101 and their drive shaft 102 correspond to conventional constructions.
  • the input range of the metering pump according to the invention is shown only incomplete.
  • paint valves similar needle valve units as in the other embodiments of the invention can be installed, for example as shown radially into the front plate unit of the dosing pump 100, not shown.
  • Also controlled by the color valves FW103 high-runner color lines are not shown.
  • the color input 105 may be connected to the low-runner color changer according to the invention via a shut-off valve V55 (FIG. 5), which may be formed by the valve V105 or arranged elsewhere.
  • 106 designates the color output of the metering pump 100.
  • such a container 110 represents, which is illustratively cylindrical or may have a ⁇ to, preferably elongated shape with a longitudinal axis.
  • Automatically signal-controlled Nadelventi- Ie FVl13 be distributed around the circumference of the container 110 in the illustrated example 18, the valve needles 114 can lie transversely to the longitudinal ⁇ axis of the container 110 in a common radial plane.
  • the needle valves may be used FVl13 112 and enforce these with their needles 114 in a radial view according to the example cylindricity ⁇ cal wall 111 of the container 110 surrounding flange.
  • the ends 115 of the valve needles resting against the valve seat can lie flush or almost flush against the inner surface 116 of the container wall 111, so that similarly small color change losses occur, as in the exemplary embodiments according to FIGS. 7, 8 and FIG. 10.
  • the leading into the container 110, controlled by the color valves FVl13 color lines are not shown.
  • Color inputs of the container for example, arranged on a Be Anlagenungsrobo- ter 110 are docked in a conventional manner with Schnellkuppelventilen to corresponding stationary paint connections of a paint booth.
  • the embodiment according to FIG. 12 essentially differs from that according to FIG. 11 only in that the needles 124 of the color valves FV123 in the illustrated example do not lie in a radial plane but are inclined relative to the radial plane perpendicular to the container axis that results in the recognizable in Fig. 13 oblique arrangement of the valves FV123.
  • the valve seats and thus with the valve closed are the needle ends in the immediate vicinity of the inner surface 126 of the container 120 with the advantage of correspondingly minimized color losses during the color change.
  • Color valves FV143 and FV143 ' may be arranged obliquely as shown in Fig. 12 and Fig. 13, expediently with mutually opposite inclination angle with respect to the radial plane.
  • one or each group of color valves can also be arranged, as in FIG. 11, in a common radial plane perpendicular to the container axis.
  • the embodiment of FIG. 14 may correspond to those of FIGS. 12 and 13.

Landscapes

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

Abstract

L'invention concerne un dispositif de revêtement pour le revêtement en série de pièces avec différentes nuances de couleurs. Dans ou à proximité du pulvérisateur dudit dispositif de revêtement, se trouve un dispositif de dosage (10) comportant notamment un doseur à piston (20) ou une pompe de dosage (100) qui présente respectivement pour chacune des couleurs les plus utilisées dans la pratique, une entrée pourvue d'une valve de couleur (FV) intégrée et, pour les couleurs moins fréquemment utilisées, un inverseur de couleur (12) distinct dont la sortie est raccordée à une autre entrée du dispositif de dosage (10) ou, par l'intermédiaire d'un dispositif de dosage propre, à la valve de sortie du pulvérisateur.
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
EP14003987.6A EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC
PL07819668T PL2101925T3 (pl) 2006-12-12 2007-11-07 Urządzenie powlekające z zespołem dozowania

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

Family

ID=39166299

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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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EP14003987.6A Active EP2853312B1 (fr) 2006-12-12 2007-11-07 Dosage ICC

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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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Also Published As

Publication number Publication date
EP2853312A2 (fr) 2015-04-01
EP2853312B1 (fr) 2020-01-01
EP2101925B1 (fr) 2015-01-07
ES2534328T3 (es) 2015-04-21
EP2853312A3 (fr) 2015-10-14
MX2009006196A (es) 2009-07-09
BRPI0719725A2 (pt) 2014-12-09
RU2009126573A (ru) 2011-01-20
JP5595734B2 (ja) 2014-09-24
US8333164B2 (en) 2012-12-18
WO2008071273A3 (fr) 2008-10-16
US20100012025A1 (en) 2010-01-21
WO2008071273A2 (fr) 2008-06-19
ES2776187T3 (es) 2020-07-29
JP2010512241A (ja) 2010-04-22
PL2101925T3 (pl) 2015-06-30
RU2427432C2 (ru) 2011-08-27
BRPI0719725B1 (pt) 2020-04-14

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