EP2075073B1 - Système de changement de couleur et procédé de changement de couleur - Google Patents

Système de changement de couleur et procédé de changement de couleur Download PDF

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Publication number
EP2075073B1
EP2075073B1 EP07025177A EP07025177A EP2075073B1 EP 2075073 B1 EP2075073 B1 EP 2075073B1 EP 07025177 A EP07025177 A EP 07025177A EP 07025177 A EP07025177 A EP 07025177A EP 2075073 B1 EP2075073 B1 EP 2075073B1
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EP
European Patent Office
Prior art keywords
colour
channel
connection
elements
color
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07025177A
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German (de)
English (en)
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EP2075073A1 (fr
Inventor
Albert Planert
Manfred Richert
Wolfgang Hagemann
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.)
Industra Industrieanlagen - Maschinen und Teile Gm
Volkswagen AG
Original Assignee
INDUSTRA Industrieanlagen - Maschinen und Teile GmbH
Volkswagen 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.)
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Publication date
Application filed by INDUSTRA Industrieanlagen - Maschinen und Teile GmbH, Volkswagen AG filed Critical INDUSTRA Industrieanlagen - Maschinen und Teile GmbH
Priority to ES07025177T priority Critical patent/ES2399882T3/es
Priority to EP07025177A priority patent/EP2075073B1/fr
Publication of EP2075073A1 publication Critical patent/EP2075073A1/fr
Application granted granted Critical
Publication of EP2075073B1 publication Critical patent/EP2075073B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1409—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet the selection means being part of the discharge apparatus, e.g. part of the spray gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids

Definitions

  • the invention relates to a color changer system for the selective supply of at least two colors to a device for dispensing the colors and a corresponding color change method.
  • colors are understood as meaning colored and colorless, usually liquid paints, lacquers, primers or similar fluids.
  • a plurality of robots are usually arranged in a paint booth, in whose robot arms the different colors, on average about 20 colors, are led as a hose package and connected there to a color changer so that the body parts can be painted in any desired color order.
  • the individual colors are often passed through ring lines from larger color tanks under a pressure of up to 20 bar up to the color changer.
  • the color changer can be formed by a block with a central channel into which the feed channels of the individual colors flow.
  • These supply channels are each closed by a selectively openable valve or the like color port.
  • opens in the channel a detergent connection.
  • the channel then leads via a paint or Lackdosierpumpe to the means for dispensing the colors, for example to a pneumatically or electrostatically operated atomizer, a spray gun or the like.
  • the previously opened color valve of the currently used color is first closed and as long as flushing agent from the detergent connection through the channel up to the device for dispensing the colors directed to the central channel of the color changer and all downstream thereof located lines including the paint or Lackdosierpumpe and the device for dispensing the colors of the previous color cleaned and partially dried.
  • the color contained in the color changer and the downstream lines is lost and must be disposed of. This leads to high costs.
  • a color change system which has a plurality of color supply valves connected to each color supply line and a atomizer-side connection valve, wherein the connection valve with one of the ink supply valves can be coupled.
  • a coupling device is provided, which allows a relative movement of the ink supply unit combined color supply valves to the port valve.
  • the connection valve When the connection valve is open, color can reach adjacent application devices, such as the color pressure regulator, dosing pump and atomizer.
  • the color change system has a rinse line associated with the atomizer-side connection valve with an additional valve arrangement for the rinsing agent or compressed air.
  • a coating material change system is known in which a color picker can be assigned to different couplings.
  • the color output of the colorant can lead to a color pressure regulator and metering pumps.
  • In the paint collector openings may be provided for the supply of detergent and / or the compressed air.
  • a painting device is described with a color changing device, which consists of two partially abutting parts that are movable relative to each other. Between the color changing device and an atomizer, a metering pump can be provided.
  • Object of the present invention is to provide a cost-effective and compact color changer system that can be cleaned well, as well as a method for changing a color in which as little as possible color is lost and at the same time a particularly reliable operation without Farbverschleppung is possible.
  • the color changer system comprises a first element, into which feed channels for the at least two colors open, and a second element, which can be rotated, swiveled and / or displaced relative to the first element, into which at least one with the device for dispensing the paint connectable conduit opens and which has a channel connected to the conduit with an opening which is selectively connected to each other by turning, pivoting and / or moving the two elements with each one of the feed channels of the first element, the supply channels this occlusive and selective openable paint ports or the like shutter assemblies are associated, and wherein in the line between the means for discharging the colors and the channel in the second element, a pump for conveying color is provided. According to the invention, the opening of the channel is fluidly connected to the pump.
  • the inventive design of the color changer system ensures that the comparatively long central channel known color changer can be omitted, so that only the downstream of the color changer located lines need to be emptied and cleaned, This is not only the amount of discarded paint and the required detergent but it can also significantly reduce the cleaning time during a color change. Since in the color changer system according to the invention, only one feed channel can always be in communication with the channel leading to the device for dispensing the colors, the simultaneous emergence of two colors is excluded.
  • the color connections or similar closure arrangements assigned to the feed channels additionally ensure that ink does not escape unintentionally.
  • the assignment of a feed channel to the line leading to the atomizer or the like means for delivering the colors by a relative movement of the two elements to each other.
  • the plates should be able to be lifted apart by more than 200 mm. In principle, however, it is sufficient to lift the plates only so far during a color change that they do not rub.
  • the pivoted two elements and then rotated or moved. Even a pure rotation and / or displacement without prior lifting or swinging away the two elements is possible, but then there is a risk of scoring on the facing surfaces of the elements.
  • the invention provided in the line between the means for delivering the colors and the channel in the second element pump color can be pushed back during a color change in the respective Farbzu Switzerlandkanal.
  • the opening of the channel is fluidly connected to the pump, i. no valves or the like are provided downstream of the paint connection in front of the pump. This allows in the color changer system according to the invention the pushing back of the color from the lines in the Farbzu Switzerlandkanal. Further, due to the absence of a valve or the like in the conduit or channel, there is no risk of a conduit bursting during the repressurization of the paint when a valve is not opened or is stuck or otherwise defective.
  • the second element has an actuating member for opening and / or closing the paint connections.
  • the paint connections can thus be designed, for example, as closing arrangements which are loaded by the fluid pressure in the feed channels and / or by an elastic element, so that an accidental discharge of color is prevented.
  • the paint connections or similar closure arrangements can thus be opened only by the actuator when the corresponding supply channel is in a position assigned to the channel, while all other color connections or closure arrangements always remain closed.
  • the actuator is arranged at any position so that it can cooperate with the paint connections.
  • the second element comprises, for example, a plunger as actuator, softer is designed and arranged such that the plunger a hollow needle, a ball or the like one of the paint connections to open against the force of the hollow needle, the Ball or the like acting elastic element lifts from a seat.
  • the actuator need not be formed as a plunger, but may be formed by any element suitable for opening a shutter or paint terminal, i.
  • a linear actuator, a needle, a solenoid valve or the like for example, a linear actuator, a needle, a solenoid valve or the like.
  • the restoring force of the elastic element is smaller than the pressure force of the fluid from the channel which is active during operation of the pump during the repressing of paint on the ball or hollow needle.
  • the paint fitting simultaneously acts as a safety valve which automatically opens to repress the paint even if the actuator fails.
  • the first and / or the second element a stepper motor or other suitable, for example.
  • Pneumatic drive for relative rotation of the two elements to each other and / or a linear actuator or the like for relative movement of the two elements are assigned to each other in an axial direction, the For a color change required rotation and translation are carried out with particularly simple means.
  • the first element is designed as a stationary, circular disc-like plate, in which the feed channels open, while the second element is formed as an example below this plate lying second plate with the stepping motor by 180 ° to 360 ° to the left or right is rotatable.
  • one or more linear actuators or the like may be provided be to achieve a stroke of, for example, about 20 mm to about 30 mm between the two elements. In principle, even an even smaller stroke can be sufficient to move the two elements relative to one another without these rubbing against one another. For cleaning purposes, it is preferable if a larger stroke of, for example, about 200 mm is made possible.
  • a flushing agent channel for supplying flushing agent via a flushing agent connection, which communicates with the channel in the second element, is formed in the first and / or second element.
  • the detergent channel is designed in such a way that when cleaning the last used closure element or the color connection of the last used color is partially cleaned with and also the actuator and all channels are cleaned, especially in the second element.
  • a rinsing agent for example, an air and solvent mixture can be used. Also, water or gases such as nitrogen are suitable as a rinse in some applications. The liquid or gaseous rinsing agent can be used simultaneously to push back the color in the Farbzu Switzerlandkanal.
  • the rinsing agent is, for example, supplied to the pump and / or to the atomizer or the like.
  • the pump and the lines can pre-purify already during the pushing back of the color, so that at most only a short after-cleaning must be done.
  • a preferably optionally forward and backward running paint or Lackdosierpumpe is arranged close to the two elements, the conduction path between the paint or Lackdosierpumpe and the two elements can be kept short, thereby further shortening the channel to be cleaned at a color change.
  • a reverse-running paint or Lackdosierpumpe in a color change that is still in the lines residual color against the flow direction during operation, ie when Painting to bring back, so that the previously used color is forced back into the feed channel.
  • the detergent This not only simplifies cleaning, but the color loss during a color change is reduced to almost zero. This leads to a considerable cost savings.
  • the entire color changer system can be constructed in a comparatively simple and cost-effective manner, since a total of only one paint or paint metering pump has to be provided, while all the supply channels are closed only by closure arrangements or the like.
  • the paint or Lackdosierpumpe is formed as a two-way operable gear pump.
  • suitable pumps or piston-cylinder units for delivery and metering may also be used as a paint or paint metering pump.
  • the paint or Lackdosierpumpe is preferably fixed to one of the two elements, in particular to the second element, wherein the paint or Lackdosierpumpe can be driven by a particular in a hollow shaft for relative rotation of the two elements to each other arranged drive shaft.
  • the drive shaft for the paint or Lackdosierpumpe can also be guided laterally outside the shaft for pivoting the two elements. This is particularly useful when additional sensors or the like. Are provided, which complicate the arrangement of the drive shaft in a hollow shaft. If the means for dispensing the paint, which is, for example, a spray gun or an atomizer bell, is designed as an electrostatic atomizer, sufficient distances must be maintained between the atomizer and the other elements of the system.
  • the paint or Lackdosierpumpe be arranged in or on the means for dispensing the colors, in particular the spray head assigned.
  • the paint or Lackdosierpumpe preferably has a separate from the hollow shaft and the first and the second element drive connection, for example, a drive shaft or a hydraulic connection.
  • the color changer system according to the invention is designed in such a way that a flushing agent inlet channel, which can be closed by means of a shut-off device, for the supply of flushing agent opens into the channel in the second element.
  • a flushing agent return channel which may be closed by means of the blocking member, branches off, which can be connected to the pump for supplying flushing agent to the pump.
  • the flushing agent inlet channel is thus looped through the channel and supplies the pump with flushing agent via the flushing agent return channel, so that color can be forced back out of the pump and the lines between the pump and the color connection through the flushing agent column.
  • the contact surfaces abutting one another during painting or the like, for example, are ground.
  • sealing means are provided in the mutually facing surfaces of the two elements, which prevent unwanted color leakage.
  • either the channel provided in the second element can be surrounded by a seal and / or seals can be assigned to each of the feed channels or paint connections.
  • At least the actuator and / or the paint or Lackdosierpumpe a control device are assigned. This may possibly also for the relative movement the two elements required drives, shutter assemblies of the color changer system and / or the detergent supply control.
  • the paint connections may become dirty or otherwise defective.
  • the replacement of a paint connection is facilitated by the fact that the feed channels are connected to the first element in each case via a quick coupling device, wherein each feed channel is assigned in addition to the color connection, a further shut-off device.
  • a paint feed channel can thus be quickly separated from the first element without any paint leakage when one of the paint connections needs to be repaired or replaced.
  • the object underlying the invention is further achieved by a method according to claim 12 or 14 for changing a color in particular between two coating steps (or the like. Steps for dispensing and / or applying a fluid), in particular with a color changer system of the type mentioned above.
  • the method according to the invention has the following steps:
  • the emptying of the paint residues in the feed channel according to the invention not only saves ink but also the cleaning of the lines, i. This is done especially when, after reversing the direction of operation of the paint or Lackdosierpumpe the color from the lines downstream of the paint during the painting downstream of the respective paint connection extending channels including the paint and Lackdosierpumpe the color connection is forced back into the first supply channel by sucking a liquid or gaseous rinsing agent into at least some of the lines from the washing means channel assigned to the pump by the pump and / or from a washing agent channel associated with the device for dispensing the colors.
  • the actuating member and / or the paint or Lackdosierpumpe controlled by a control device such that the first painting step is continued after closing the color associated with the first color terminal until the color substantially completely from the lines downstream of the paint terminal of the device for dispensing the colors is delivered. Therefore, the ink does not have to be discarded or pushed back, but can be applied far enough from the lines downstream of the paint connection during the first painting step that these lines are virtually free of ink residues.
  • flushing agent is introduced into the lines downstream of the color connection before the end of the first painting step during the continuation of the first painting step.
  • the lines are thus cleaned during the first painting and filled with detergent. This facilitates and shortens the color change process significantly.
  • an air inclusion in the line out of the line is forced into a flowing into the channel detergent return line and, for example, the pump is supplied.
  • the forced out can be done both by detergent and by paint or paint.
  • the methods according to the embodiments described above are preferably operated such that a residual color amount remaining in the lines when the color changes is less than 10 ml, in particular less than 5 ml.
  • rinsing agent Before the two elements are removed from one another, it is preferable to supply rinsing agent through the rinsing agent feed channel for the purpose of cleaning the first paint connection and the line downstream thereof.
  • This may be an air and solvent mixture.
  • the rinsing agent is used according to a preferred embodiment of the invention not only for cleaning the downstream of the paint connection lines but also for cleaning the atomizer or the like.
  • the rinsing agent is initially conducted together with any paint residues of the first color to a valve upstream of the paint dispensing device and from there to a collecting container and only after cleaning of the downstream of the paint connection lines by switching the valve in and / or via the device for dispensing the colors.
  • the atomizer or the like is thus cleaned only with one of the previous color largely unloaded detergent.
  • the paint or Lackdosierpumpe In order to allow the rest of the color to restrain in the downstream of the paint port lines, the paint or Lackdosierpumpe is operated at a pressure higher than that prevailing in the feed channels pressure.
  • the paint or Lackdosierpumpe can build up a pressure of, for example, about 70 bar, while prevail in the ring lines and the feed channels only up to about 20 bar.
  • the color changer system has two circular disk-like elements 1 and 2, which in the illustration of Fig. 1 abut each other. In the top of the figure in the figure 1 open several feed channels 3, of which in Fig. 1 only one is shown. Each of the feed channels 3 is assigned a color connection 4 formed by a closure arrangement in the first element 1. As from the representation of Fig. 2 it can be seen, a plurality of feed channels and paint connections are arranged on a circular path of the first element 1.
  • the second element 2 is provided only with a bore, which can be brought into each case with one of the paint terminals 4 in coverage.
  • a plunger 5 is introduced, which lift the ball of the paint terminal 4 against the force of the spring of the paint terminal 4 from its seat may be to establish a flow connection between the feed channel 3 and the bore in the second element 2.
  • an opening 6a is formed, which faces the first element 1, so that the respectively associated with the second element 2 color terminal 4 directly opposite the opening formed as a bore in the end face of the second element 6a.
  • a channel 6 is formed with a free passage, which is in communication with the bore 6 a of the actuator 5.
  • the bore 6a forms a connection portion of the channel 6 for selective connection with one of the paint connections 4.
  • a shut-off valve 15 may be provided for the detergent channel 7, which, however, does not affect the free passage of the channel 6.
  • the channel 7 can also be used as a return or discharge channel for rinsing agent and / or residual color, for example.
  • the channel 6 is connected to a paint or Lackdosierpumpe 8, which in turn is connected via a line, not shown, with a device for dispensing the colors, which is formed by an atomizer 9 in the illustrated embodiment.
  • the paint or Lackdosierpumpe 8 is rigidly connected to the second element 2, wherein a drive shaft 11 for the paint or Lackdosierpumpe 8 through a central bore in the two elements 1 and 2 leads.
  • the drive shaft 11 of the paint or Lackdosierpumpe 8 is guided by a hollow shaft 12 which is rigidly connected to the second element 2 and is rotatably guided through a bore in the first element 1.
  • the hollow shaft 12 thus makes it possible to rotate the second element 2 relative to the first element 1.
  • the hollow shaft 12 is assigned, for example, a stepping motor, not shown in the figures.
  • device for lifting the two elements 1 and 2 relative to each other in the axial direction of the hollow shaft 12 is provided. This device can be formed for example by a suitable linear drive.
  • ink is passed from a paint line from a paint reservoir at a pressure of, for example, up to 20 bar via the feed channel 3 to the first element 1.
  • the actuator 5 opens the paint port 4, so that the paint is passed through the channel 6 to the paint or Lackdosierpumpe 8. From there, the ink is passed under increased pressure to the atomizer 9, from which it is applied, for example, to body parts.
  • color port 4 all other paint connections are closed on the one hand by the force of the spring and on the other hand by the fluid pressure in the supply channels, so that no color can escape from these other supply channels.
  • the paint or Lackdosierpumpe 8 is actuated in the opposite direction, so that the remaining in the lines 10 between the paint terminal 4 and the atomizer 9 residual color is conveyed through the paint terminal 4 back into the feed channel 3.
  • a gas for example air or nitrogen
  • / or a liquid rinsing agent is sucked into these lines 6, 10 located downstream of the paint connection 4. This is a pre-cleaning of the lines.
  • first flushing agent is supplied through the flushing agent connection 7, which cleans both the lower side of the color connection 4, ie the ball, and the elements of the actuating element 5 projecting into the channel 6, and all lines located downstream of the color connection 4 flushed.
  • rinsing agent is sucked into the lines when the color or Lackdosierpumpe 8 actuated in a reverse direction for a color change and thereby the remaining in the lines between the paint terminal 4 and the atomizer 9 residual color through the paint terminal. 4 is fed back into the feed channel 3.
  • the lines are thus filled after the expulsion of the residual color already with the detergent and can then be cleaned by supplying more detergent, dried by supplying air or filled directly with the new color.
  • the actuating member 5 Before this flushing operation, the actuating member 5 is retracted so far that the paint connection 4, which faces the actuating member 5, is closed by the fluid pressure in the feed channel 3 and by the elastic element of the paint terminal 4.
  • the pressure of the rinsing agent is less than the pressure in the feed channel 3, so that the paint connection 4 remains closed during the rinsing process.
  • the first element 1 is first lifted off the second element 2 or vice versa, with a small stroke of, for example, about 30 mm already being sufficient for the spacing of the two elements 1 and 2 from each other. Subsequently, the second element 2 is rotated as far as the first element 1 by actuation of the stepping motor until the supply channel and the color connection of the next required color is opposite the actuating member 5. The two elements 1 and 2 are then brought back into contact with each other and the actuator 5 can open the paint connection to a new painting.
  • Fig. 3 a schematic diagram of the line system shown.
  • the line system comprises the feed channel 3, which is closed by the closure assembly 4.
  • the shutter assembly 4 can be opened so that color by the in Fig. 3 not shown opening 6a can flow into the channel 6.
  • Detergent can be introduced from a detergent inlet channel 13 via the detergent connection 7 in the channel 6 and be forwarded via the flushing agent return channel 14, for example, to the pump 8.
  • the flushing agent connection 7 is assigned a shut-off element 15, which blocks the supply of flushing agent or makes it possible, if necessary.
  • the first element 1 is not formed as a circular disc but as an elongate rail, wherein the paint terminals 4 may be arranged in one or more rows on the rail. As a result, particularly many color connections can be provided on the first element 1.
  • the feed channels 3 assigned to the paint attachments 4 can open into the first element 1 from above or from the side, wherein the closure arrangement 4 does not have to be provided on the same side as the feed channels.
  • the second element 2 can be kept compact in this embodiment and has the channel 6 with the opening 6a and possibly the actuating element 5 on.
  • the actuating element 5 can also be arranged on the side facing away from the opening 6a of the first element in order to open the closure arrangements defined and close.

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Claims (18)

  1. Système de changement de couleur pour alimentation sélective d'au moins deux couleurs d'un dispositif (9) pour distribuer des couleurs avec un premier élément (1) dans lequel débouchent des conduits d'alimentation (3) pour au moins les deux couleurs, avec un deuxième élément (2) mobile par rapport au premier élément, pouvant en particulier tourner, pivoter et/ou coulisser, dans lequel débouche au moins une conduite (10) raccordable au dispositif (9) pour distribuer des couleurs et qui présente un conduit (6) raccordé à la conduite avec une ouverture (6a) tournée vers le premier élément (1), qui est raccordable par un mouvement relatif des deux éléments (1,2) de façon sélective l'un avec l'autre avec respectivement un des conduits d'alimentation (3) du premier élément (1), ces raccords de couleurs (4) fermables et ouvrables de façon sélective étant attribués aux conduits d'alimentation (3), un conduit d'alimentation de produit de rinçage (13) pour amener des produits de rinçage fermable au moyen d'un organe d'arrêt (15) débouchant dans le deuxième élément (2) caractérisé en ce que dans la conduite (10) entre le dispositif (9) destiné à distribuer des couleurs et le conduit (6) dans le deuxième élément (2), est prévue une pompe (8), fonctionnant de préférence, au choix, en marche avant ou arrière, pour transporter de la couleur, l'ouverture (6a) du conduit (6) étant reliée pour écoulement avec la pompe (8) de telle sorte qu'il n'est prévu aucun dispositif d'arrêt avant la pompe (8) en aval du raccord de couleur (4) respectif et qu'un conduit de retour de produit de rinçage (14) fermable, le cas échéant avec l'organe d'arrêt (15), dérive du conduit (6) dans le deuxième élément (2) et/ou du conduit d'alimentation de produit de rinçage (13) qui est raccordable à la pompe (8) pour alimenter ladite pompe (8) en produit de rinçage.
  2. Système de changement de couleur selon la revendication 1 caractérisé en ce que le deuxième élément (2) présente un organe de commande (5) pour ouvrir et/ou fermer les raccords de couleur (4).
  3. Système de changement de couleur selon la revendication 2 caractérisé en ce que le deuxième élément (2) comporte un poussoir (5) en tant qu'organe de commande qui est constitué et monté de telle sorte que le poussoir (5) soulève d'un siège une aiguille creuse ou une bille d'un des raccords de couleur (4) pour ouvrir par rapport à la force d'un élément élastique agissant sur l'aiguille creuse ou sur la bille.
  4. Système de changement de couleur selon la revendication 3 caractérisé en ce que la force de rappel de l'élément élastique est plus faible que la force de pression du fluide venant du conduit (6) agissant sur la bille ou l'aiguille creuse pendant le fonctionnement de la pompe (8).
  5. Système de changement de couleur selon une des revendications précédentes caractérisé en ce qu'un moteur pas à pas ou une commande pneumatique est attribué au premier et/ou au deuxième élément (1,2) pour la rotation relative des deux éléments (1,2) l'un avec l'autre et/ou un organe de réglage linéaire pour le déplacement relatif des deux éléments (1,2) l'un avec l'autre dans un sens axial.
  6. Système de changement de couleur selon une des revendications précédentes caractérisé en ce qu'une pompe doseuse de couleur ou de peinture (8) fonctionnant au choix en avant ou en arrière est montée proches des deux éléments (1,2).
  7. Système de changement de couleur selon la revendication 6 caractérisé en ce que la pompe doseuse de couleur ou de peinture (8) est fixée à un des deux éléments (2), la pompe doseuse de couleur ou de peinture (8) pouvant être entraînée par un arbre de commande (11) disposé en particulier dans un arbre creux (12) pour mettre en rotation relative les deux éléments (1,2) l'un par rapport à l'autre.
  8. Système de changement de couleur selon une des revendications 1 à 5 caractérisé en ce que la pompe doseuse de couleur ou de peinture (8) est montée attribuée en particulier à une tête de pulvérisation (9), dans ou sur un dispositif (9) distribuant les couleurs.
  9. Système de changement de couleur selon une des revendications précédentes caractérisé en ce que dans les surfaces tournées l'une vers l'autre des deux éléments (1 ,2) sont prévus des moyens d'étanchéité qui entourent le conduit (6) et/ou les conduits d'alimentation (3).
  10. Système de changement de couleur selon une des revendications précédentes caractérisé en ce qu'un dispositif de régulation est attribué à l'organe de commande (5) et/ou à la pompe doseuse de peinture ou de couleur (8).
  11. Système de changement de couleur selon une des revendications précédentes caractérisé en ce qu'au moins un des conduits d'alimentation (3) est relié au premier élément (1) par un dispositif d'accouplement rapide, un autre organe d'arrêt étant attribué au conduit d'alimentation (3) en plus du raccord de couleur (4).
  12. Procédé de changement de couleur, en particulier entre deux phases de peinture dans un système de changement de couleur selon les revendications précédentes avec les phases suivantes :
    - Alimentation d'une première couleur depuis un réservoir de couleur vers un dispositif (9) distribuant les couleurs, la couleur débouchant par un premier conduit d'alimentation (3) à raccord de couleur ouvert (4) dans un premier élément (1), par une ouverture (6a) dans un conduit (6) dans un deuxième élément (2) qui adhère de façon hermétique au premier élément (1) et par une conduite (10) vers une pompe doseuse de couleur ou de peinture (8) agissant dans une première direction de fonctionnement et dirigée depuis ce point vers le dispositif (9) pour distribuer des couleurs,
    - Inversion de la direction de fonctionnement de la pompe doseuse de couleur ou de peinture (8) pour une durée de temps, jusqu'à ce qu'au moins pour l'essentiel toute la couleur soit refoulée des conduites (6,8,9,10) en aval du raccord de couleur (4) dans le premier conduit d'alimentation (3),
    - fermeture du premier raccord de couleur (4) attribué à la première couleur,
    - exécution d'au moins un mouvement relatif des deux éléments (1,2) l'un par rapport à l'autre jusqu'à ce qu'un deuxième raccord de couleur d'une deuxième couleur se trouve en face de l'ouverture (6a) du conduit (6) et que les deux éléments (1,2) ou au moins leur(s) joint(s) d'étanchéité adhèrent l'un à l'autre,
    - ouverture du raccord de couleur attribué à la deuxième couleur et alimentation de la deuxième couleur depuis un réservoir de couleur vers le dispositif (9) pour distribuer des couleurs, la couleur débouchant par le deuxième conduit d'alimentation à raccord de couleur (4) ouvert dans le premier élément (1), par l'ouverture (6a) dans le conduit (6) dans le deuxième élément (2), qui adhère hermétiquement au premier élément et par la conduite vers la pompe doseuse de couleur ou de peinture (8) agissant à nouveau dans la première direction de travail et est dirigée depuis ce point vers le dispositif (9) pour distribuer des couleurs caractérisé en ce qu'après inversion de la direction de fonctionnement de la pompe doseuse de couleur ou de peinture (8), la couleur est refoulée des conduites (6,8,9,10) en aval du raccord de couleur (4) dans le premier conduit d'alimentation (3) un produit de rinçage liquide ou gazeux étant aspiré dans au moins plusieurs des conduits (6,8,9,10) par la pompe (8) à partir d'un conduit de produit de rinçage (14) attribué à la pompe (8) et/ou à partir d'un conduit de produit de rinçage attribué au dispositif (9) pour distribuer les couleurs.
  13. Procédé de changement de couleur selon la revendication 12 caractérisé en ce qu'avant le mouvement relatif des deux éléments (1,2), un produit de rinçage est introduit par un conduit d'alimentation de produit de rinçage (7) pour nettoyer le premier raccord de couleur (4) et les conduites (6,8,9,10) situées en aval de celui-ci, qui est au moins temporairement en raccordement d'écoulement avec le conduit (6).
  14. Procédé de changement de couleur, en particulier entre deux phases de peinture dans un système de changement de couleur selon une des revendications 1 à 11, avec les phases suivantes :
    - alimentation d'une première couleur pendant une première phase de peinture depuis un réservoir de couleur vers un dispositif (9) pour distribuer des couleurs, la couleur débouchant par un premier conduit d'alimentation (3) à raccord de couleur (4) ouvert dans un premier élément (1), par une ouverture (6a) dans un conduit (6) dans un deuxième élément (2), qui adhère hermétiquement au premier élément (1) et par une conduite (10) vers une pompe doseuse de couleur ou de peinture (8) agissant dans la première direction de fonctionnement et est dirigée depuis ce point vers le dispositif (9) pour distribuer des couleurs,
    - fermeture du premier raccord de couleur (4) attribué à la première couleur avant la fin de la première phase de peinture et continuation de la première phase de peinture jusqu'à ce qu'au moins une partie de la première couleur soit délivrée des conduites (6,8,9,10) en aval du raccord de couleur (4) par le dispositif (9) pour distribuer des couleurs,
    - exécution d'au moins un mouvement relatif des deux éléments (1,2) l'un par rapport à l'autre jusqu'à ce qu'un deuxième raccord de couleur d'une deuxième couleur se trouve en face du conduit (6) et que les deux éléments (1,2) ou au moins leur(s) joint(s) d'étanchéité adhèrent l'un à l'autre,
    - ouverture du raccord de couleur attribué à la deuxième couleur et alimentation de la deuxième couleur pendant une deuxième phase de peinture depuis un réservoir de couleur vers le dispositif (9) pour distribuer des couleurs, la couleur débouchant par le deuxième conduit d'alimentation à raccord de couleur (4) ouvert dans le premier élément (1), par l'ouverture (6a) dans le conduit (6) dans le deuxième élément (2), qui adhère hermétiquement au premier élément et par la conduite (10) vers la pompe doseuse de couleur ou de peinture (8) agissant à nouveau dans la première direction de travail et est dirigée depuis ce point vers le dispositif (9) pour distribuer des couleurs caractérisé en ce qu'après la fermeture du premier raccord de couleur (4) attribué à la première couleur du produit de rinçage est introduit dans les conduites (6,8,9,10) en aval du raccord de couleur (4) avant la fin de la première phase de peinture pendant la continuation de la première phase de peinture.
  15. Procédé de changement de couleur selon la revendication 14 caractérisé en ce que l'organe de commande (5) et/ou la pompe doseuse de couleur ou de peinture (8) sont régulés par un dispositif de régulation de telle sorte que la première phase de peinture continue après la fermeture du premier raccord de couleur (4) attribué à la première couleur jusqu'à ce que pour l'essentiel toute la couleur des conduites (6,8,9) en aval du raccord de couleur (4) soit distribuée du dispositif (9) pour distribuer des couleurs.
  16. Procédé de changement d'une couleur selon une des revendications 12 à 15 caractérisé en ce que le mouvement relatif des deux éléments (1,2) comprend les phases suivantes :
    - éloignement des deux éléments (1,2) l'un de l'autre et rotation et/ou coulissement ultérieur des deux éléments (1,2) relativement l'un par rapport à l'autre jusqu'à ce qu'un deuxième raccord de couleur d'une deuxième couleur se trouve en face du conduit (6),
    - rapprochement des deux éléments (1,2) l'un de l'autre jusqu'à ce que ceux-ci ou au moins leur(s) joint(s) d'étanchéité adhérent l'un à l'autre.
  17. Procédé de changement d'une couleur selon les revendications 13, 14 ou 15 caractérisé en ce que le produit de rinçage soit d'abord dirigé ensemble avec des restes de couleur de la première couleur jusqu'à un clapet monté en amont du dispositif (9) pour distribuer des couleurs et de là dans un bac de réception et soit dirigé seulement après le nettoyage des conduites (6,8,9,10) situées en aval du raccord de couleur (4) par basculement du clapet dans et/ou sur le dispositif (9) pour distribuer des couleurs.
  18. Procédé de changement d'une couleur selon les revendications 12 à 17 caractérisé en ce que la pompe doseuse de couleur ou de peinture (8) soit actionnée à une pression plus élevée, de préférence jusqu'à environ 70 bars, que la pression régnant dans les conduits d'alimentation, de préférence jusqu'à environ 20 bars.
EP07025177A 2007-12-28 2007-12-28 Système de changement de couleur et procédé de changement de couleur Active EP2075073B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES07025177T ES2399882T3 (es) 2007-12-28 2007-12-28 Sistema cambiador de color de pintura y procedimiento para cambiar un color de pintura
EP07025177A EP2075073B1 (fr) 2007-12-28 2007-12-28 Système de changement de couleur et procédé de changement de couleur

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EP07025177A EP2075073B1 (fr) 2007-12-28 2007-12-28 Système de changement de couleur et procédé de changement de couleur

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EP2075073B1 true EP2075073B1 (fr) 2012-10-03

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DE102013006219A1 (de) * 2013-04-11 2014-10-16 Eisenmann Ag Wechseleinrichtung für Beschichtungsmedien und Beschichtungssystem zum Beschichten von Gegenständen
WO2016165698A1 (fr) 2015-04-15 2016-10-20 Apson Lackiertechnik Gmbh Système de changement de couleur
DE102015008845A1 (de) * 2015-07-13 2017-01-19 Eisenmann Se Wechseleinrichtung und Beschichtungssystem zum Beschichten von Gegenständen
DE102016113505A1 (de) 2016-07-21 2018-01-25 Apson Lackiertechnik Gmbh Farbwechselsystem

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DE19962220C2 (de) * 1999-12-22 2002-01-24 Fraunhofer Ges Forschung Beschichtungsstoff-Wechselsystem und Beschichtungssystem für die automatisierte Beschichtungstechnik sowie Verfahren zum automatisierten Beschichten
DE10115471B4 (de) * 2001-03-29 2010-05-27 Dürr Systems GmbH Farbwechselsystem für eine Beschichtungsanlage
DE10115463A1 (de) * 2001-03-29 2002-10-02 Duerr Systems Gmbh Zerstäuber für eine Beschichtungsanlage und Verfahren zu seiner Materialversorgung
ES2330632T3 (es) * 2003-07-28 2009-12-14 Durr Systems Gmbh Dispositivo de pulverizacion con cambiador de color para el revestimiento en serie de piezas.
DE102006005341A1 (de) * 2006-02-07 2007-08-09 Volkswagen Ag Lackiervorrichtung sowie Farbwechseleinrichtung für eine Lackiervorrichtung

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ES2399882T3 (es) 2013-04-04

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