EP2853312B1 - Dosage ICC - Google Patents

Dosage ICC Download PDF

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Publication number
EP2853312B1
EP2853312B1 EP14003987.6A EP14003987A EP2853312B1 EP 2853312 B1 EP2853312 B1 EP 2853312B1 EP 14003987 A EP14003987 A EP 14003987A EP 2853312 B1 EP2853312 B1 EP 2853312B1
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EP
European Patent Office
Prior art keywords
color
metering device
metering
piston
valves
Prior art date
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Application number
EP14003987.6A
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German (de)
English (en)
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EP2853312A3 (fr
EP2853312A2 (fr
Inventor
Frank Herre
Rainer Melcher
Manfred Michelfelder
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Duerr Systems AG
Original Assignee
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
Publication of EP2853312A2 publication Critical patent/EP2853312A2/fr
Publication of EP2853312A3 publication Critical patent/EP2853312A3/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—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 metering device that can be used for a coating device for the serial coating of workpieces with different colors.
  • metering device preferably means volumetric metering devices, such as gear pumps or piston metering devices, which can be driven by a controllable motor in such a way that the amount of material applied by the atomizer (instantaneous flow) depends on requirements, for example depending on the respective workpiece area and other parameters can be changed, such as in EP 1 314 483 A2 or DE 691 03 218 T2 is explained.
  • the volumetric dosing is typically carried out by controlling the speed of a gear pump or the piston speed of a piston dosing device.
  • Gear metering pumps are preferred in many cases due to their small size, continuous paint delivery and cost advantages.
  • Piston dosing devices have the advantage of higher dosing accuracy by avoiding the slippage between the gear pair and the housing of gear dosing pumps, and in Electrostatic painting equipment, in which high-voltage insulation between the atomizers and their grounded supply system is required, can be easily achieved with the discontinuous paint conveying operation of a piston metering device. Other advantages will be explained.
  • the main needle valve of the atomizer serve as an actuator of a control circuit for controlling the amount of paint or outflow rate and thus as a metering device.
  • color change valve arrangements usually referred to as color changers are shown in Block construction (ie as a mechanical unit) which connects the numerous paint inlets via a central channel to the paint outlet leading to the atomizing element. Due to their usual modular structure, they can be easily adapted to different colors.
  • Typical modular color changers for wet paint are, for example DE 198 36 604 A1 and DE 198 46 073 A1 known, while a basically similar color changer for powder coating in the DE 601 03 281 T2 is described. For example, the flushing of color changers DE 199 51 956 A1 , Color changers of this type are typically connected upstream of the known gear or piston metering devices or, if appropriate, the paint storage container mentioned.
  • a color change valve arrangement in the atomizer also known in practice as ICC technology (Integrated Color Changer)
  • ICC technology Integrated Color Changer
  • the loss of color change can be reduced, for example, from about 45 ml of paint per atomizer and color change with conventional color change technology to only about 4 ml.
  • detergent losses There is a similar reduction in detergent losses.
  • the color change time can be halved, for example from 12 to 6 seconds, with the result of an increase in the capacity of the coating system of approximately 5-10% or, for example, 30-60 vehicles per day.
  • a disadvantage of known systems with a color changer built into the atomizer is the small number of selectable color tones, which is restricted by the space requirement of the color changer and the color lines leading into the atomizer.
  • a color changer built into the atomizer instead of using one of the usual color changers, i.e. a modular color changing block with an output channel common to the colors, you can also feed the colors, e.g.
  • the number of frequently required colors (high-runner) that can be selected is also limited here by the available space in the atomizer, the implementation of the paint hoses by the hand axis of the painting robot and, if dosing devices are connected in advance, by the space required for mounting them on the robot.
  • color changers are common in painting systems because, as is well known, they enable a quick change from one color to another during the painting operation. However, they have the basic disadvantage of unavoidable color losses when flushing the more or less large central channel with every color change. After optimizing the color losses in, for example, pigged hoses, dosing devices, etc., the color changer is often the element of the coating system with the greatest single loss to be able to conduct, as may be desired for various reasons (special ink supplies, container technology, higher painting quantities, shorter cycle times of successive workpieces, higher viscosities, etc.). In addition, the loss of color change increases with the number of connected colors and the resulting length of the central channel, so that the number of colors must often be undesirably limited.
  • color changing systems based on the docking principle were developed, in which the color lines provided for the different colors can be coupled to a line leading to the atomizer with mechanically movable valve elements (EP 1 245 295 A2 . DE 100 64 065 A1 or DE 601 11 607 T2 ).
  • mechanically movable valve elements EP 1 245 295 A2 . DE 100 64 065 A1 or DE 601 11 607 T2 .
  • a color saving typically around 10 ml with each color change
  • they have various practical disadvantages such as time-consuming Motion control for moving to the coupling positions, high maintenance requirements, rinsing the interface, drying paint at the interface, leaks etc.
  • a relatively good solution to the problem of reducing color losses when changing colors is provided by the EP 1 502 657 A2 achieved color changer, the central channel of which is subdivided into sections that can be flushed independently of one another, with the often required high-runner colors, that is to say the colors with a high consumption volume, being connected to the front section located at the color exit, and less frequently to the rear section facing away from the color exit required colors (low-runner) can be connected. While the often required front section is always rinsed independently of the rear section, the less frequently required section can be rinsed together with the other section. Since the entire central channel is no longer rinsed when changing colors, as with conventional color changers, there is less loss of paint and rinsing liquid. However, these remaining color change losses are also undesirable, especially for frequently used colors.
  • a color pressure regulator is usually arranged, which can provide a pre-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 flushed with every color change.
  • EP 1 502 658 A1 discloses an atomizer in which there is a metering pump and a color change valve arrangement connected upstream of this pump in the usual manner In the form of a color changer with valve units connected to a common collecting duct.
  • EP 1 666 159 A2 discloses the common arrangement of a piston metering device and a color changer in the wrist of a robot.
  • EP 1 502 659 B1 describes the advantages of particularly small color changers with needle valves.
  • GB 2 326 833 A discloses an atomizer on which a housing is arranged, in which there is a metering pump with several inputs for lines which contain controllable color valves for different selectable colors.
  • EP 1 502 658 A1 It is an object of the invention to provide a metering device which can be used for a coating device for coating workpieces, in particular with shades of color that are required differently, with a color change being possible with minimal or little loss of color, detergent and time.
  • the color change losses of the high-runner colors are lowest when both the metering device and the color lines required for these colors are accommodated in the atomizer.
  • the associated color valves which are controlled by external signals for the choice of color, are preferably attached directly to the metering device or installed therein.
  • 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 a person moving the atomizer Coating robots or other program-controlled automatic machines.
  • the color changer provided for possibly many, but less frequently required, color tones is always arranged separately and further away from the atomizer, preferably in or on an arm of the coating robot or the like.
  • the high-runner color valves but at most 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, that is to say in the second robot arm or traveling along (on the so-called axis 7) or even outside the painting robot.
  • color losses during a color change can be achieved by additional measures known per se to the person skilled in the art, such as, in particular, the pigging technique in connection with pushing back the colors remaining in the line into the supply system Avoid (“reflow”) and / or almost complete consumption of the paint in the line when applying (“Pushout").
  • the output of the separate color changer for less frequently used colors is preferably connected in parallel to the color lines of the most frequently required high-runner colors to a separate additional input of the metering device or, if appropriate, 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 at any distance outside the atomizer. d. H. usually on its main needle valve.
  • a corresponding further color changer is provided, which is connected to color lines for the same color tones.
  • This alternate color supply is usually referred to as A / B operation (see e.g. EP 1314483 A ).
  • the two matching supply branches (A and B) are connected in parallel to one another to the atomizer, in preferred exemplary embodiments of the invention described here to two inputs of the metering device (possibly its storage container) or otherwise via a separate metering device to the main needle valve of the atomizer.
  • a / B operation is also for the invention High-runner color supply possible, for which a corresponding further arrangement of a dosing device and controlled color valves is then provided in parallel to the arrangement of the metering device and the controlled color valves of the frequently required color shades, the color valves of the two arrangements of color lines for the same also being provided here Color tones are connected.
  • EP 1666158 A2 are used, i.e. a piston-driven metering device with a cylinder, the areas separated by the piston each having several controlled inputs for the selectable different colors and each having a controlled output connected to the main needle or other output valve of the atomizer.
  • each color changer for less than the z. B. 7 or less high-runner colors required colors can expediently contain at least two line sections, into each of which several controlled color valves for coating materials with selectable different color tones open, and of which at least one line section can be flushed independently of at least one other line section, the Line sections are connected to one another and / or to an output line of the color changer by a controlled shut-off valve.
  • Such color changers are inherently from the EP 1502657 A2 are known and enable a meaningful further differentiation between colors that are required differently to reduce the color change losses, with colors that are used less frequently being connected to the line section of the color changer further away from the color output and the other colors to its other line section located at the color output.
  • these dosing devices can also work simultaneously in order to supply the application member with two components of a coating material coming from separate supply lines, such as two-component paints in particular.
  • the metering device is preferably installed or installed in the atomizer or in its vicinity a piston metering device with a metering drive which can be controlled automatically to change the piston speed during the application, for which one of the constructions known per se from the prior art can be used for this.
  • the piston metering device according to the invention or possibly its upstream storage container does not have only one or at most (as in the case of the mentioned EP 1666158 ) two inputs, but for each of the selectable frequently required colors at least one separate input and at least one common output for the feedable color materials.
  • a piston metering device has special advantages, for example, compared to gear metering pumps and other metering systems, such as better flushability with less flushing effort and the option of pressing the colors back (reflow) into the supply system, e.g. B.
  • piston metering device does not require a color pressure regulator, as opposed to currently available gear metering pumps, which, for reasons of dosing accuracy, would normally have to be preceded by a separate color pressure regulator for each connected color line.
  • the piston dispenser avoids the disadvantages of pressure regulators such as costs, loss of color when changing colors, space requirements and the weight of the robot axes.
  • the color valves of the high-runner color lines which are controlled by signals for color selection, are attached to the metering device or are structurally integrated into the latter.
  • a piston metering device or a piston cylinder upstream of it which is to be understood as a container with any cross-section, including a non-circular one
  • at least the piston cylinder space on one side of the piston can have a plurality of inputs for the color lines of differently colored coating materials, whereby the inputs preferably have valves built into the cylinder or attached to the cylinder, which can be controlled by signals for selecting the coating materials that can be fed to the piston metering device.
  • Such a piston metering device with or without an upstream storage container, can also be expedient and advantageous in itself and independently of the coating device described here, that is to say also in any other paint supply system, including systems in which the piston metering device is not located in or near the atomizer.
  • the piston metering device is not located in or near the atomizer.
  • the same applies to the above-mentioned double-acting piston metering device according to the EP 1666158 A2 in which the inputs of the one area of the cylinder provided for the different selectable colors are located on or in the one end of the cylinder and the inputs of the other area are located on or can be located in the opposite end of the cylinder.
  • the color change valves can be built into a gear metering pump of the type which is conventional per se or be attached to the dosing pump.
  • the paint valves can also be placed in or on a container of a coating device, e.g. a coating robot to be installed or attached, which is not used for dosing, but in a manner known per se for other purposes such as, for example, as an intermediate or storage container.
  • a coating device e.g. a coating robot to be installed or attached
  • the number of color valves installed or attached to or in a metering device or a container of a coating device for a correspondingly large number of color inputs depends on the respective individual case, but is generally more than two and preferably more than four.
  • the coating device shown contains a metering device 10, to the outlet 11 of which the usual main needle valve or the like of an atomizer (not shown) for colored material, such as an electrostatic rotary atomizer or air atomizer, is connected.
  • the output 11 is common to several, in the example shown, six color inputs of the metering device 11, each of which has a color valve FV1, FV2, etc. to FV6 that is automatically controlled by the higher-level control program for color selection.
  • the metering device 10 can be of any type per se, that is to say it corresponds to one of the metering systems known per se for coating systems, including piston metering devices and gear metering pumps or systems working with color pressure and color quantity control, etc. Volumetric metering devices and in particular piston metering devices are preferred in the invention.
  • the color lines 13 for the most frequently required or high-runner colors (designated 2 to 6) which are fed, for example, as spur lines from the ring lines customary in coating systems, are connected to the color valves FV2 to FV6 of the metering device 10 are or can even be designed as a ring line.
  • One of the color valves, here FV1 is connected via a color line 15 to the output of an external color changer 12 and is used to separate the high-runner color change area from the low-runner color changer 12.
  • the color changer 12 can have at the outset conventional modular block construction with a central channel, to which the color lines 14 for less frequently used or low-runner colors are connected via the color valves of the color changer. Preferred embodiments of the color changer 12 are shown below with reference to Fig. 3 described.
  • the metering device 10 and / or the color valves FV1 to FV6 can preferably be located in the atomizer or can be moved with it in the vicinity thereof, in particular between the atomizer and the wrist of a painting robot or in its forearm.
  • the color valves are preferably attached to or incorporated into the metering device 10 (piston metering device, storage container, metering pump or, if appropriate, the measuring cell or the color pressure regulator, metering systems known per se, etc.).
  • the external color changer 12 on the other hand, can be located at a location that should be as close as possible to the atomizer in terms of color change losses, but is otherwise largely arbitrary. For dynamic and space reasons, for example, a location on or in the rear robot arm can be useful if an arrangement further ahead cannot be realized.
  • the metering drive can be located outside the metering pump (for example as shown in FIG EP 1000667 B ).
  • the metering drive can also be installed in the piston metering device or in the metering pump.
  • the paint supply according to the invention is suitable for any atomizer, in particular also for electrostatic atomizers, which are known to charge the coating material to a high voltage potential, for example in the order of 100 kV.
  • sensors and actuators located in the atomizer can be at the high voltage potential of the atomizer during operation, as well as, if applicable, an electric drive motor of the bell cup provided instead of the usual compressed air turbine, if it is a rotary atomizer ,
  • the metering drive which is at high voltage potential, and possibly the electric bell-turn motor, which is also at this potential, can be supplied with electrical power by an isolating transformer at least with its secondary coil arrangement in the atomizer.
  • the isolating transformer forms a high-voltage insulation path between its primary and secondary circuits and thus galvanically separates the consumers it supplies, which are
  • control and sensor signals of the actuators and sensors of the atomizer can also be transmitted potential-free into or out of the atomizer, for example optically or via radio.
  • the external signals controlling the metering drive can be transmitted together with other signals over a common cable or radio link, etc.
  • the actuation of the usual main needle valve or another outlet or main valve of the atomizer can be controlled by the pressure generated at the outlet (11) of the metering device upstream of the main valve.
  • the main valve is therefore opened by the pressure of the metering device as soon as and as long as there is a corresponding pressure, and automatically closed when there is no pressure.
  • the principle of operation corresponds to that of a color pressure regulator that is common in coating systems, such as that made of DÜRR / BEHR technical manual, 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 complete content of which is hereby incorporated into the disclosure of the present application.
  • a color pressure 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, the valve not being opened by control air, but by the color pressure itself.
  • the main valve of the atomizer or another application device can preferably consist of a needle valve or also of a ball or other valve for the coating material, which is held in the closed position by spring force and opened by the pressure of the coating material acting against the spring force, for example via a membrane is as soon as this pressure reaches a certain value that can be set fixed or changeable.
  • control input of the main valve is connected to the output of the dosing device described.
  • This (indirect) automation of the main needle control by the dosing device eliminates the very complex setting of the main needle circuit of conventional atomizers, the main needle valve of which is known to only be provided by external signals the program control of the coating system is opened and closed (see e.g. EP 1245291 B1 ).
  • a piston metering device 20 is shown schematically, which essentially consists of a cylinder 21, a piston 23 displaceable in the cylinder by the piston rod 22 and a metering drive (not shown).
  • the components of the piston metering device 20 can consist of an insulating material for high-voltage reasons and a ceramic material to improve the metering accuracy.
  • the metering 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 working according to this principle are off, for example EP 1384885 B and WO 93/23173 known.
  • the piston metering device 20 has several, in the example shown, five color inputs E1 to E5, each of which has a color valve FV1 'to FV5' and is therefore connected to one of five color lines 13 'for different high-runner colors.
  • An additional input E6 which is also provided with a valve VV, is provided for introducing a thinner V serving as a rinsing agent and for pulse air PL also serving for cleaning the cylinder 21.
  • the cylinder 21 has an outlet A with an outlet valve VA, to which an outlet line of the piston metering device leading to the main needle or outlet valve of the atomizer is connected.
  • the color valves FV are preferably attached to or installed in the cylinder base 24 of the piston metering device, as indicated by the dashed line 24 '. Accordingly The flushing valve VV and / or the outlet valve FA can also be attached or installed.
  • the piston metering device 20 is the Fig. 2 as a metering device 10 based on Fig. 1 described device is used, one of the color inputs such as E1 to E5 of the piston metering device (instead of a high-runner color line) can also be connected to an external color changer, that is to say, for example, from the color changer 12 in Fig. 1 coming color line for rarely needed colors. Instead, however, the output line of an external color changer could also bypass the piston metering device 20 to the output valve of the atomizer.
  • element 20 in Fig. 2 also according to, for example, a paint storage container connected upstream of the actual piston metering device EP 1 772 194 A2 act, the piston of which is usually not driven by an electric motor, but in the filling direction by the coating material and in the emptying direction by a pressure medium such as compressed air.
  • piston metering device 20 for alternate operation of the cylinder regions separated by the piston 23 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 base of the piston metering device opposite the cylinder base 24.
  • the external color changer 12 (provided in the preferred embodiments of the invention) Fig. 1 ) for less frequently used colors, the in Fig. 3 in (a) schematically shown known design, such as from DE 19836604 A1 . DE 19846073 A1 or DE 19951956 A1 is known per se. It therefore essentially consists of color valves for twenty-four different colors in the example shown, flushing valves for pulsed air PL and thinner V and a return valve RF which are connected to the central channel 30a of the color changer.
  • the in Fig. 3 Color changer 12b shown schematically in (b) essentially corresponds to the exemplary embodiment Fig. 2 the aforementioned EP 1502657 A2 , the entire content of which is hereby incorporated into the present description.
  • the two channel sections are designated 30b1 and 30b2 and are connected in series by the controlled shut-off valve 16b.
  • the colors more frequently required are connected to the color valves of section 30b1, designated 1 to 6, while the colors less frequently required are connected to the other color valves of section 30b2. In practice, this results in lower color change losses than in the standard color changer Fig. 3 (a) ,
  • this color changer has special advantages such as a 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 means that the color change time for all selectable colors is always the same.
  • the paint line 45 from the output of the external paint changer 42 for the low-runner colors is also connected to the common channel 41 via a shut-off valve V45 that separates the two paint supply systems for high-runner and low-runner colors.
  • V45 can be an integral part of the usual central channel of the color changer 42 and can merge into the channel 41 or form it (cf. Fig. 8 ).
  • the color changer 42 can, for example, the arrangement shown in the drawing of the color valves F1 to Fn for the n different low-runner colors available, the recirculation valve RF2, the flushing valves V1 and PL1 for thinner or pulsed air, and as shown between the color and Return valves on the one hand and the flush valves on the other hand contain the shut-off valve SPVFW.
  • 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 central channel of the color changer common to the various low-runner colors 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 when painting with one of the low-runner colors.
  • the color changer 42 is separated with the shut-off valve V45.
  • FIG. 5 An embodiment of the invention is shown schematically, in which the metering device is formed by a gear metering pump 50, which differs from conventional metering pumps in that it has several inputs to which the color lines 53 for the high-runner colors and parallel to this, the color line 55 from the output of the separate color changer 52 for the low-runner colors are connected via the valve V55.
  • the color valves FV53 with which the inputs for the high-runner colors are provided, can preferably be placed directly on the metering gearwheels of the metering pump 50 with virtually no loss of color.
  • the color valves can preferably be designed as needle valves of a conventional type.
  • the shut-off valve V55 for the low-runner colors can be installed in the inlet of the metering pump 50 or upstream of it.
  • the color changer 52 can do that Fig. 4 correspond or one of the color changers Fig. 3 ,
  • the low runner color changer according to 4 and 5 can also according to embodiments 1 and 2 be used.
  • FIG. 6 An elongated paint container 60 is shown, which is for example the storage container of the known metering device mentioned several times or instead also according to a piston metering device Fig. 2 can act.
  • the four or five high-runner valves FV63 for example, are shown parallel to the container axis next to each other in the end wall 69 of the container 60, possibly next to a further valve VF65 for the low-runner colors.
  • the associated paint lines controlled by these valves can be expediently connected by radial paint connections (not shown) distributed over the circumference of the container.
  • the shut-off valve belonging to the low-runner line (not shown) (V45 in Fig. 4 ) can also be designed differently from the valves FV63 and arranged at a different location.
  • the container 60 can 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 can be signal-controlled needle valve units of the construction shown per se, are preferably so with their needles 73 in the end wall 76 (69 in Fig. 6 ) that the needle ends 78 are at least approximately in the plane of the inside 71 of the end wall 76 when the valve is closed, that is to say they are flush with this plane.
  • the conical valve seat of the color valve FV63 can be seen at 75.
  • one of the paint connections leading radially into the end wall 76 from the circumference for the high-runner paint lines (13 in.) Opened or closed by the paint valves FW63 can be inserted into the opening 77 Fig. 1 ) are used.
  • valve arrangement shown is also a radial installation or attachment of the color 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-runner color valves in the described exemplary embodiments of the invention should be as small as possible so that as many valves as possible can be accommodated in the limited installation space available.
  • a built-in or attached valve for connecting low-runner colors e.g. valve FV1 in Fig. 1 .
  • the color valves of the removed or separate low-runner color changer can be built larger.
  • the larger size in itself has the advantage that the flow openings can be larger and the paint flow rate can be correspondingly lower for a given color print and therefore there is less risk of damage to the paint material.
  • FIG. 8 The valve arrangement shown is according to an exemplary embodiment Fig. 4 suitable, in which the five high-runner color valves FV83 shown radially around the central channel 85 of the low-runner color changer (42 in Fig. 4 ) are distributed and adjoin the circumference of the central channel 85 with the ends 88 of their valve needles.
  • the color valves FV83 can be screwed here in a radial plane common to their needle axes into the circumference of a wall element 89 which can form an end wall of the container mentioned or can be attached to the actual end wall. Between the color valves FV83, as shown, the associated color connections 84 for the high-runner colors are distributed over the circumference of the wall element 89.
  • the star-shaped valve arrangement shown other arrangements known for example 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 in accordance with FIG 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 which is typical of color changers in coating systems and is structurally mounted in the immediate vicinity of 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 metering device 99 and other details can be seen in the drawing and can otherwise be found in FIG EP 1 772 194 A2 described system correspond, 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 color inlet 105 of a gear metering pump 100 in accordance with the schematic illustration in FIG Fig. 5 .
  • the two metering gear wheels 101 and their drive shaft 102 correspond to conventional designs.
  • the input area of the metering pump according to the invention is only shown incompletely.
  • Needle valve units similar to those in the other exemplary embodiments of the invention can be installed as color valves, for example radially into the end plate unit of the metering pump 100 (not shown).
  • the high-runner color lines controlled by the color valves FW103 are also not shown.
  • the color inlet 105 can be connected to the low-runner color changer according to the invention via a shut-off valve V55 ( Fig. 5 ) can be connected, which can be formed by the valve V105 or arranged elsewhere.
  • the color output of the metering pump 100 is designated by 106.
  • a container 110 which can be cylindrical as shown or can have another, preferably elongated shape with a longitudinal axis.
  • signal-controlled needle valves FV113 are automatically distributed around the circumference of the container 110, the valve needles 114 of which can lie in a common radial plane transverse to the longitudinal axis of the container 110.
  • the needle valves FV113 can, as shown, be inserted radially into a flange 112 which, for example, encloses the cylindrical wall 111 of the container 110, and penetrate this with their needles 114.
  • the ends 115 of the valve needles abutting the valve seat can adjoin the inner surface 116 of the container wall 111 flush or almost flush, so that similarly low color change losses occur as in the exemplary embodiments according to FIG Fig. 7 .
  • Fig. 8 and Fig. 10 The color lines leading into the container 110 and controlled by the color valves FV113 are not shown.
  • no separate color changer is required 1 to 5 or a central channel of a color changer like 58 in Fig. 8 be provided, in particular if no more colors are required than the existing number of color valves 113. If required, however, it is possible to connect a conventional color changer for additional selectable colors, for example to one of the color valves FV113 or to another automatically controllable input of the container 110.
  • Coating systems are also conceivable in which the paint inputs of the container 110, for example arranged on a coating robot, are docked in a manner known per se with quick coupling valves to corresponding stationary paint connections of a painting booth.
  • Fig. 12 differs from that Fig. 11 essentially only in that the needles 124 of the 12 color valves FV123 in the example shown are not in a radial plane, but rather are inclined relative to the radial plane perpendicular to the container axis, so that the in Fig. 13 recognizable oblique arrangement of the valves FV123 results.
  • the valve seats and thus the needle ends when the valve is closed are located in the immediate vicinity of the inner surface 126 of the container 120, with the advantage of correspondingly minimized color losses when changing colors.
  • a correspondingly larger number - in the example shown 30 - of valve-controlled color lines for different selectable colors can be connected to the container 140.
  • the two groups of color valves FV143 and FV143 'shown can be as in 12 and 13 be arranged obliquely, advantageously with an opposite angle of inclination with respect to the radial plane.
  • One or each group of color valves can also as in Fig. 11 be arranged in a common radial plane perpendicular to the container axis. Otherwise, the embodiment can be Fig. 14 after those 12 and 13 correspond.
  • electrical or pneumatic signal lines for example, which are not shown in the drawings, can be connected to the valves in a manner known per se.

Landscapes

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

Claims (10)

  1. Dispositif de dosage pour un dispositif de revêtement pour le revêtement en série de pièces avec différentes nuances de couleurs, moyennant quoi, avec le dispositif de dosage, la quantité instantanée du matériau de revêtement appliqué peut être modifiée de manière contrôlée pendant l'application,
    avec plusieurs soupapes de couleur (FV) contrôlables par des signaux pour la sélection des matériaux de revêtement provenant de conduites de couleur (13, 13'), qui sont montées sur ou intégrées dans le dispositif de dosage (10, 20) ou un réservoir (90) du dispositif de dosage,
    le dispositif de dosage (10, 20, 50)
    a) étant ou contenant une pompe de dosage à roue dentée (50, 100) ou
    b) étant un doseur à piston (20) ou contenant un doseur à piston (99), dont l'entraînement de dosage peut être contrôlé par la modification de la vitesse du piston pendant l'application, le doseur à piston (20) ou un réservoir (90) raccordé en amont ayant une entrée (E1-E5) correspondante pour chaque conduite de couleur (13'), caractérisé en ce que les plusieurs soupapes de couleur (FV) montées ou intégrées
    dans le dispositif de dosage (10, 20, 50) ou dans u réservoir (90) du dispositif de dosage, sont constituées d'unité de soupapes à aiguilles (FV63, FV83, FV103) contrôlées de manière automatique.
  2. Dispositif de dosage selon la revendication 1, caractérisé en ce que les unités de soupapes à aiguilles sont insérées avec leurs aiguilles dans une paroi du dispositif de dosage ou de son réservoir, de façon à ce que les extrémités des aiguilles se trouvent dans approximativement dans le plan du côté interne de la paroi lorsque la soupape est fermée.
  3. Dispositif de dosage selon la revendication 2, caractérisé en ce que les aiguilles (73) des soupapes (FV63) traversent, parallèlement à l'axe longitudinal d'un doseur à piston ou d'un réservoir du dispositif de dosage, une paroi d'extrémité (76) du cylindre de piston (60) ou du réservoir, et leurs extrémités (78) s'alignent au moins approximativement avec le côté interne de la paroi d'extrémité (76) lorsque la soupape est fermée.
  4. Dispositif de dosage selon la revendication 2, caractérisé en ce que les soupapes (FV83) sont insérées radialement dans la circonférence d'un élément de paroi (89) d'un cylindre de piston et les extrémités (88) de leurs aiguilles de soupapes sont adjacentes au moins approximativement de manière affleurante à un canal central axial (85) lorsque la soupape est fermée.
  5. Dispositif de dosage selon la revendication 3 ou 4, caractérisé en ce que les raccords (77, 84, 97) pour les conduites contrôlées par les soupapes (FV) sont insérées radialement dans la circonférence de la paroi d'extrémité (69, 76) ou de l'élément de paroi (89).
  6. Dispositif de dosage selon l'une des revendications précédentes, caractérisé en ce que le dispositif de dosage (10) est un doseur à piston (20), entraîné par un entraînement de dosage, avec un cylindre (21) ou contient un tel doseur, dont les parties séparées par le piston (23) comprennent chacune plusieurs entrées contrôlées (E1-E5) pour le matériau de revêtement avec différentes nuances de couleurs sélectionnables et chacune une sortie contrôlée (A) pouvant être reliée avec la soupape de sortie d'un pulvérisateur.
  7. Dispositif de dosage selon la revendication 6, caractérisé en ce que les entrées (E1-E5) d'une partie se trouvent sur ou dans une extrémité frontale (24) du cylindre (21) et les entrées de l'autre partie se trouvent dans ou sur l'extrémité frontale opposée du cylindre (21).
  8. Dispositif de dosage selon l'une des revendications précédentes, caractérisé en ce que les soupapes de couleur (FV) sont réparties sur la circonférence du réservoir (110).
  9. Dispositif de dosage selon l'une des revendications précédentes, avec un cylindre (21, 60) et un piston coulissant dans celui-ci, caractérisé en ce qu'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 peut être raccordée une conduite de couleur (13') d'un groupe de conduites de couleur prévues pour des matériaux de revêtement de différentes couleurs.
  10. Utilisation d'un dispositif de dosage selon l'une des revendications 1 à 9, dans un dispositif de revêtement pour le revêtement en série de pièces avec différentes nuances de couleurs, avec
    - un pulvérisateur qui comprend un organe d'application pour le matériau de revêtement ;
    - le dispositif de dosage (10, 20) branché en amont de l'organe d'application, se trouvant dans le pulvérisateur ou à proximité de celui-ci, avec lequel la quantité instantanée de matériau de revêtement appliqué peut être modifié de manière contrôlée pendant l'application ;
    - un groupe de plusieurs conduites de couleur (13, 13') qui introduisent des matériaux de revêtement sélectionnables avec des nuances de couleurs nécessaires relativement fréquemment dans le dispositif de dosage (10, 20) disposé en amont de l'organe d'application, la sortie (11, A) du dispositif de dosage (10, 20) étant commune aux matériaux de revêtement provenant des conduites de couleur (13, 13') du groupe ;
    - des soupapes de couleur (FV) contrôlées par des signaux pour la sélection des matériaux de revêtement provenant des conduites de couleur (13, 13') du premier groupe ; et
    - un changeur de couleur (12) disposé loin du pulvérisateur, qui contient une pluralité de soupapes de couleur, auxquelles sont raccordées des conduites de couleur (14) d'un deuxième groupe pour un matériau de revêtement avec des nuances de couleurs rarement utilisées et dont la sortie (15) commune à celle des conduites de couleur (14) du deuxième groupe
    - est raccordée parallèlement aux conduites de couleur (13, 13') du premier groupe au dispositif de dosage (10, 20) ou à un réservoir (90) du dispositif de dosage
    - ou conduit, parallèlement au dispositif de dosage (10, 20), à l'organe d'application du pulvérisateur.
EP14003987.6A 2006-12-12 2007-11-07 Dosage ICC Active EP2853312B1 (fr)

Applications Claiming Priority (4)

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
EP07819668.0A EP2101925B1 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage
PCT/EP2007/009658 WO2008071273A2 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP07819668.0A Division EP2101925B1 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage
EP07819668.0A Division-Into EP2101925B1 (fr) 2006-12-12 2007-11-07 Dispositif de revêtement équipé d'un dispositif de dosage

Publications (3)

Publication Number Publication Date
EP2853312A2 EP2853312A2 (fr) 2015-04-01
EP2853312A3 EP2853312A3 (fr) 2015-10-14
EP2853312B1 true EP2853312B1 (fr) 2020-01-01

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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)
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WO (1) WO2008071273A2 (fr)

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Publication number Publication date
US20100012025A1 (en) 2010-01-21
US8333164B2 (en) 2012-12-18
EP2101925A2 (fr) 2009-09-23
BRPI0719725B1 (pt) 2020-04-14
EP2101925B1 (fr) 2015-01-07
ES2776187T3 (es) 2020-07-29
WO2008071273A3 (fr) 2008-10-16
WO2008071273A2 (fr) 2008-06-19
ES2534328T3 (es) 2015-04-21
RU2009126573A (ru) 2011-01-20
JP2010512241A (ja) 2010-04-22
JP5595734B2 (ja) 2014-09-24
BRPI0719725A2 (pt) 2014-12-09
EP2853312A3 (fr) 2015-10-14
RU2427432C2 (ru) 2011-08-27
EP2853312A2 (fr) 2015-04-01
PL2101925T3 (pl) 2015-06-30
MX2009006196A (es) 2009-07-09

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