EP2651574A2 - Rotary device for the storage and distribution of liquid products, such as base colours for automotive paint - Google Patents

Rotary device for the storage and distribution of liquid products, such as base colours for automotive paint

Info

Publication number
EP2651574A2
EP2651574A2 EP11817343.4A EP11817343A EP2651574A2 EP 2651574 A2 EP2651574 A2 EP 2651574A2 EP 11817343 A EP11817343 A EP 11817343A EP 2651574 A2 EP2651574 A2 EP 2651574A2
Authority
EP
European Patent Office
Prior art keywords
brush
valves
cleaning
liquid products
circular path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11817343.4A
Other languages
German (de)
French (fr)
Other versions
EP2651574B1 (en
Inventor
Aurélien Brule
Anthony Valot
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.)
Fillon Technologies SAS
Original Assignee
Fillon Technologies SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fillon Technologies SAS filed Critical Fillon Technologies SAS
Publication of EP2651574A2 publication Critical patent/EP2651574A2/en
Application granted granted Critical
Publication of EP2651574B1 publication Critical patent/EP2651574B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools
    • B08B1/30Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/84Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44DPAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/06Implements for stirring or mixing paints
    • B44D3/08Implements for stirring or mixing paints for liquid or semi-liquid paints

Definitions

  • Rotating device for storing and dispensing liquid products, especially basic colors for automotive paint
  • the invention relates to a rotary device for storing and dispensing liquid products.
  • the invention finds a particularly advantageous application in the field of storage, selection and dosage of basic colors for paint, especially for paints prepared on demand by automotive repair professionals.
  • bodybuilders develop the quantities of paint needed to repair a body by mixing a number of basic colors. Each mixture is determined from a formula defined by the paint manufacturer, this formula giving the mass of each base color to be incorporated for a given quantity of mixture to be obtained. This preparation commonly involves mixing five to six base shades to obtain the particular shade prescribed by the paint manufacturer.
  • a rotary device for dispensing liquid products comprising a plurality of containers storing different respective basic colors.
  • a container is constituted, for example, of a cell defining an enclosed interior volume adapted to seal a deformable bag containing one of the base colors.
  • Each pocket is provided with a metering valve for expelling the corresponding base tint to a collection container of the device when the internal volume of the cell is pressurized.
  • the containers are fixed, in a circumferential configuration, on a carousel with horizontal axis of rotation.
  • the carousel is indexed in rotation so that the metering valve of a selected container is brought into a sampling position, opposite the collecting container.
  • Dosing means then control the expulsion of a predetermined dose of hue into the collection container.
  • the metering valves are arranged along the carousel along one or more parallel circumferential rows, the valves of each said circular path when the carousel of the dispensing device is rotated.
  • a metering valve comprises an end-ended conduit, generally spherical in shape, pierced with a through-hole communicating with the inside of the deformable pouch so as to permit the expulsion of the basic shade contained to the collecting container. in the pocket.
  • the passage hole can be opened or closed at will by means of a shutter coupled to an electromagnetic coil placed around the valve conduit and adapted to drive the shutter in a translatory movement parallel to the conduit under the action of the valves. aforementioned dosing means. In practice, it is found that after sampling there may be traces of paint on the spherical tip of the valve at the passage hole and the shutter. By drying, these soils may clog the passage hole and thus cause dosing problems related to a valve whose passage hole is partially or completely plugged.
  • the rotary devices for distributing liquid products are generally provided with so-called "wet” cleaning means which consists in washing the conduits and the spherical valve tips by means of brushes or mobile sponges having a humidification system with a solvent, which can be water, so as to dilute the remaining paint and facilitate cleaning.
  • wet cleaning means which consists in washing the conduits and the spherical valve tips by means of brushes or mobile sponges having a humidification system with a solvent, which can be water, so as to dilute the remaining paint and facilitate cleaning.
  • a rotary device for dispensing liquid products comprising metering valves arranged in at least one circumferential row so that the valves of a circumferential row describe a circular path during the rotation.
  • this device being remarkable in that it further comprises a valve cleaning system comprising at least one fixed dry brush during cleaning, arranged on at least one circular path so as to come into contact by friction with the valves of at least one circumferential row of valves.
  • the cleaning system of the invention implements one or more brushes called “dry” in the sense that the cleaning of the valves is achieved by the only friction on the brush bristles, excluding any solvent additional.
  • the carousel is also rotated, continuously or at intervals, in order to produce a rotating gravity field capable of preventing the sedimentation of the particles present in suspension in the basic colors contained in the pockets of the containers.
  • the brushes may optionally be retracted outside the cleaning periods, when the device is not used, in particular to reduce the wear of the spherical tips of the valves after the latter have been cleaned. The retraction can be triggered automatically after a given period of time (for example one hour) or a predetermined number of revolutions of the carousel after the last use of the device.
  • the cleaning system comprises at least one brush disposed on a circular path of valves.
  • each circumferential row has one or more brushes that are specific to it.
  • the cleaning system comprises at least one brush disposed on a plurality of circular valve paths. In this case, several circumferential rows share one or more same brushes.
  • said brush is configured to have a variable depth of penetration of the valves in the brush.
  • a gradual cleaning of the valves is achieved, for example by a coarse cleaning where the depth of penetration into the brush is important to finish by a finer cleaning of the spherical tip of the valves by outcropping on the ends of the bristles. of brush.
  • the invention also provides that said brush is placed at the outlet of a liquid product sampling station of the dispensing device, that is to say near and downstream of the sampling station with respect to the rotation of the carousel, in order to that the selected valves can be cleaned at the earliest after expulsion of the paint and before it has had time to dry or flow along the spherical tip.
  • the device according to the invention comprises two brushes placed on either side of the liquid product sampling station of the dispensing device.
  • This arrangement is particularly advantageous when the dispensing device comprises means for reversing the direction of rotation, since the early cleaning of the valve can be obtained at the outlet of the sampling station irrespective of the direction of rotation of the carousel.
  • a dust collector is located under the brush, in order to collect the dust particles. These are released by the friction of the hairs on the valves and prevent them from dispersing and eventually pollute and affect the operation of certain sensitive organs of the dispensing device.
  • One advantage of the cleaning system provided by the invention is its ease of design and construction, which results in reduced cost. Another advantage is that it requires only a very limited maintenance, since there is no reserve of solvent to maintain level and wiper system to keep wet and clean. 0
  • Figure 1a is a front view of a rotary device for dispensing liquid products according to the invention.
  • Figure 1b is a perspective view of the device of Figure 1a.
  • Figure 2 is a detail view of the device of Figure 1a.
  • Figure 3 is a perspective view of a curved brush for fitting the device of Figures 1a and 1b.
  • FIGs 1a and 1b there is shown a rotary device for dispensing liquid products, in particular paint basecoats, of the type described in the aforementioned WO 2009/153504 A1.
  • This device is built around a fixed frame 10 including in particular a 1 1 sampling station comprising a collector container, not shown, in which are collected the basic colors of the paint to achieve.
  • These base colors are contained in deformable pockets 21, 22, 23 from which they can be expelled through the metering valves 31, 32, 33 of Figure 1b, which are referenced generally in FIGS. 2.
  • the deformable pockets 21, 22, 23 and the metering valves 31, 32, 33 of FIGS. 1a, 1b and 2 are mounted in three parallel circumferential rows on a carousel that is rotatable around the fixed frame 10. Of course the number of circumferential rows may be any.
  • a number of deformable pockets are automatically selected by the dispensing device from the prescriptions of the paint manufacturers.
  • the pockets thus selected are successively brought by indexing means opposite the sampling station 1 1.
  • the expulsion of a predetermined amount of color into the collection container of the sampling station 1 1 is then controlled by dosing means.
  • valves of each circumferential row describe a circular path respectively denoted TC1, TC2, TC3 in FIG. 1b, and globally TC in FIG. 1a.
  • the rotary dispensing device shown in FIGS. 1a, 1b and 2 is equipped with a cleaning system comprising, of a in general, at least one dry brush fixed to the fixed frame of the device disposed on at least one circular path so as to come into frictional contact with the valves of at least one circumferential row of valves.
  • the cleaning system comprises five brushes, namely the brush 41 to which the brush 42 corresponds by rotation of 180 °, the brush 51 to which is also rotated by 180 ° the brush 52, and a central brush 60.
  • these brushes are used without the addition of any solvent, hence their term "dry".
  • the cleaning of the conduit 301 and the spherical tip 302 of the valves is obtained only by friction with the bristles of the brushes.
  • the bristles are preferably nylon.
  • these brushes are fixed in the sense that, being fixed to the frame 10, their position is independent of the rotation of the carousel 20. The friction between the valves and the brushes results from their relative rotational movement.
  • the brushes 41, 42, 51, 52, 60 are flat and are arranged transversely on all circular paths TC1, TC2, TC3.
  • the valves of the three circumferential rows share the five brushes in common.
  • the width ⁇ of the brushes 41, 42, 51, 52, 60 is at least equal to the distance between the extreme circumferential rows of valves, while their length L is determined to allow sufficient cleaning, and may not concern that one valve at a time taken on each circumferential row, as shown in Figures 1a, 1b and 2.
  • the brushes can be curved in a generally arcuate shape with a radius of curvature close to that of the circular paths TC1, TC2, TC3.
  • the angular length of the brush is about 50 °.
  • this same figure illustrates a brush 80 to be disposed on a single circumferential row of valves.
  • the brush then has a width at least equal to the diameter of the valves.
  • the bristles 81 are implanted in holes 82 staggered in three rows, the holes of the same row being angularly spaced 2 °, which gives a total number of holes of the order of 125.
  • the number of hairs per hole can vary from 150 to 200.
  • the brushes 41 and 51 are placed on either side of the station 1 1 picking basic colors.
  • This configuration corresponds to a dispensing device equipped with means for reversing the direction of rotation of the carousel 20.
  • a brush, 41 or 51 is immediately at the outlet of the station 1 1 of sampling, which allows an early cleaning of the valve after expulsion of the hue.
  • the permanent rotation of the carousel avoids the sedimentation of the hues in the pockets, and the periodic reversal of the direction of rotation makes it possible to symmetrize the cleaning of the valves and thus to treat the entire surface of the spherical tip of the valves.
  • one of the brushes 41 or 51 may be omitted, as well as possibly the brush 42 or 52 diametrically opposite.
  • Figure 1a shows the presence under the upper brushes 41, 51 of two trays 71, 72 for the recovery and removal of dust produced by the friction of the brush bristles on the valves.
  • valve may be advantageous to achieve a variable depth of penetration of the valve into the bristles, for example by initially leaving the valve to penetrate to a depth of several millimeters to be roughly cleaned and then only touched to a very small depth to optimize the cleaning of the spherical tip of the valve.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

The invention relates to a device comprising dosing valves (31, 32, 33) disposed in a circumferential row, such that the valves from one circumferential row define a circular path (TC1, TC2, TC3) during the rotation of the distribution device. The invention also includes a valve-cleaning system comprising at least one stationary dry brush (41, 42, 51, 52, 60) disposed on at least one circular path (TC1, TC2, TC3), such as to come into frictional contact with the valves of at least one circumferential row of valves.

Description

Dispositif rotatif de stockage et de distribution de produits liquides, notamment de teintes de base pour peinture automobile  Rotating device for storing and dispensing liquid products, especially basic colors for automotive paint
L'invention concerne un dispositif rotatif de stockage et de distribution de produits liquides. The invention relates to a rotary device for storing and dispensing liquid products.
L'invention trouve une application particulièrement avantageuse dans le domaine du stockage, de la sélection et du dosage de teintes de base pour peinture, notamment pour les peintures préparées à la demande par les professionnels de la réparation automobile.  The invention finds a particularly advantageous application in the field of storage, selection and dosage of basic colors for paint, especially for paints prepared on demand by automotive repair professionals.
Dans ce domaine, les carrossiers élaborent les quantités de peinture nécessaires à la réparation d'une carrosserie en mélangeant un certain nombre de teintes de base. Chaque mélange est déterminé à partir d'une formule définie par le fabricant de peintures, cette formule donnant la masse de chaque teinte de base à incorporer pour une quantité donnée de mélange à obtenir. Cette préparation implique couramment le mélange de cinq à six teintes de base pour obtenir la nuance particulière prescrite par le fabricant de peintures.  In this field, bodybuilders develop the quantities of paint needed to repair a body by mixing a number of basic colors. Each mixture is determined from a formula defined by the paint manufacturer, this formula giving the mass of each base color to be incorporated for a given quantity of mixture to be obtained. This preparation commonly involves mixing five to six base shades to obtain the particular shade prescribed by the paint manufacturer.
Pour réaliser ces opérations, on connaît d'après le WO 2009/153504 A1 (Fillon Technologies) un dispositif rotatif de distribution de produits liquides comprenant une pluralité de conteneurs stockant différentes teintes de base respectives. Un conteneur est constitué, par exemple, d'un alvéole définissant un volume intérieur clos apte à loger de manière étanche une poche déformable contenant l'une des teintes de base. Chaque poche est munie d'une valve de dosage permettant l'expulsion de la teinte de base correspondante vers un récipient collecteur du dispositif lorsque le volume intérieur de l'alvéole est mis sous pression. To carry out these operations, it is known from WO 2009/153504 A1 (Fillon Technologies) a rotary device for dispensing liquid products comprising a plurality of containers storing different respective basic colors. A container is constituted, for example, of a cell defining an enclosed interior volume adapted to seal a deformable bag containing one of the base colors. Each pocket is provided with a metering valve for expelling the corresponding base tint to a collection container of the device when the internal volume of the cell is pressurized.
Les conteneurs sont fixés, selon une configuration circonférentielle, sur un carrousel à axe de rotation horizontal. Le carrousel est indexé en rotation de sorte que la valve de dosage d'un conteneur sélectionné soit amenée dans une position de prélèvement, en regard du récipient collecteur. Des moyens de dosage commandent alors l'expulsion d'une dose prédéterminée de teinte dans le récipient collecteur. The containers are fixed, in a circumferential configuration, on a carousel with horizontal axis of rotation. The carousel is indexed in rotation so that the metering valve of a selected container is brought into a sampling position, opposite the collecting container. Dosing means then control the expulsion of a predetermined dose of hue into the collection container.
Les valves de dosage sont disposées le long du carrousel selon une ou plusieurs rangées circonférentielles parallèles, les valves de chaque ran- gée décrivant un trajet circulaire lorsque le carrousel du dispositif de distribution est mis en rotation. The metering valves are arranged along the carousel along one or more parallel circumferential rows, the valves of each said circular path when the carousel of the dispensing device is rotated.
Une valve de dosage comprend un conduit terminé par un bout, généralement de forme sphérique, percé d'un trou de passage communiquant avec l'intérieur de la poche déformable de manière à permettre l'expulsion vers le récipient collecteur de la teinte de base contenue dans la poche. Le trou de passage peut être ouvert ou fermé à volonté au moyen d'un obturateur couplé à une bobine électromagnétique placée autour du conduit de valve et apte à entraîner l'obturateur dans un mouvement de tran- slation parallèle au conduit sous l'action des moyens de dosage précités. En pratique, on constate qu'après prélèvement il peut rester des traces de peinture sur le bout sphérique de la valve au niveau du trou de passage et de l'obturateur. En séchant, ces salissures risquent de boucher le trou de passage et donc de provoquer des problèmes de dosage liés à une valve dont le trou de passage serait partiellement ou complètement bouché. A metering valve comprises an end-ended conduit, generally spherical in shape, pierced with a through-hole communicating with the inside of the deformable pouch so as to permit the expulsion of the basic shade contained to the collecting container. in the pocket. The passage hole can be opened or closed at will by means of a shutter coupled to an electromagnetic coil placed around the valve conduit and adapted to drive the shutter in a translatory movement parallel to the conduit under the action of the valves. aforementioned dosing means. In practice, it is found that after sampling there may be traces of paint on the spherical tip of the valve at the passage hole and the shutter. By drying, these soils may clog the passage hole and thus cause dosing problems related to a valve whose passage hole is partially or completely plugged.
A cela s'ajoutent les projections de peinture provenant d'éclaboussures au moment de l'éjection de la dose de peinture dans le récipient collecteur, qui peuvent venir souiller la valve. En particulier, de telles projections sont susceptibles de poser des problèmes de fonctionnement de la machine par encrassement du conduit de valve au niveau de la bobine, pouvant causer des collages, voire même des arrachements de valve. Added to this are splashing paint splashes at the time of the ejection of the paint dose in the collecting container, which can come to soil the valve. In particular, such projections are likely to cause problems in the operation of the machine by fouling of the valve duct at the coil, which can cause collages or even tearing valve.
Pour remédier à ces difficultés, les dispositifs rotatifs de distribution de produits liquides sont généralement munis de moyens de nettoyage dit "humide" qui consiste à laver les conduits et les bouts sphériques de valve au moyen de brosses ou d'épongés mobiles disposant d'un système d'humidification avec un solvant, qui peut être de l'eau, de façon à diluer la peinture restante et faciliter le nettoyage. In order to remedy these difficulties, the rotary devices for distributing liquid products are generally provided with so-called "wet" cleaning means which consists in washing the conduits and the spherical valve tips by means of brushes or mobile sponges having a humidification system with a solvent, which can be water, so as to dilute the remaining paint and facilitate cleaning.
Cependant, ce système de nettoyage connu présente un certain nombre d'inconvénients. Il faut en effet penser à remplir le réservoir de solvant, ceci d'autant plus qu'il doit être tenu compte de la tendance à l'évaporation. Il existe par ailleurs des risques de coulures de solvant et donc de pollution des différents organes du dispositif de distribution. Enfin, le nettoyage des valves n'est effectué que par intermittence, sans possibilité de pouvoir réagir rapidement à la formation de salissures ou à la fuite de valves. Aussi, l'un des buts de l'invention est de proposer un dispositif rotatif de distribution de produits liquides qui permette, d'une part, d'éviter les inconvénients qui viennent d'être signalés concernant le nettoyage "humide", et, d'autre part, de pouvoir faire disparaître sans délai les résidus ou les projections de peinture à mesure qu'ils se forment sur les valves. Ce but est atteint, selon l'invention, grâce à un dispositif rotatif de distribution de produits liquides comportant des valves de dosage disposées selon au moins une rangée circonférentielle de sorte que les valves d'une rangée circonférentielle décrivent un trajet circulaire lors de la rotation du dispositif de distribution, ce dispositif étant remarquable en ce qu'il comporte en outre un système de nettoyage des valves comprenant au moins une brosse sèche fixe pendant le nettoyage, disposée sur au moins un trajet circulaire de manière à venir en contact par frottement avec les valves d'au moins une rangée circonférentielle de valves. However, this known cleaning system has a number of disadvantages. It must indeed think to fill the solvent tank, especially since it must be taken into account the tendency to evaporation. There are also risks of solvent dripping and therefore pollution of the various organs of the dispensing device. Finally, the cleaning of the valves is carried out only intermittently, without the possibility of being able to react quickly to the formation of soiling or leaking valves. Also, one of the aims of the invention is to propose a rotary device for distributing liquid products which makes it possible, on the one hand, to avoid the disadvantages which have just been reported with regard to "wet" cleaning, and on the other hand, to be able to make disappear immediately the residues or projections of paint as they form on the valves. This object is achieved, according to the invention, by means of a rotary device for dispensing liquid products comprising metering valves arranged in at least one circumferential row so that the valves of a circumferential row describe a circular path during the rotation. of the dispensing device, this device being remarkable in that it further comprises a valve cleaning system comprising at least one fixed dry brush during cleaning, arranged on at least one circular path so as to come into contact by friction with the valves of at least one circumferential row of valves.
Ainsi, on comprend que le système de nettoyage de l'invention met en œuvre une ou plusieurs brosses dites "sèches" au sens où le nettoyage des valves est réalisé par le seul frottement sur les poils de brosse, à l'exclusion de tout solvant additionnel. Thus, it is understood that the cleaning system of the invention implements one or more brushes called "dry" in the sense that the cleaning of the valves is achieved by the only friction on the brush bristles, excluding any solvent additional.
D'autre part, pendant le nettoyage la ou les brosses sèches sont fixes par rapport aux éléments tournants tels que les valves du carrousel animées d'un mouvement de rotation, ces brosse étant alors solidaires d'un bâti du dispositif de distribution. Cette configuration présente l'avantage d'assurer un nettoyage permanent des valves du fait que le carrousel du dispositif est toujours animé d'un mouvement de rotation au cours duquel les valves viennent nécessairement en contact avec la ou les brosses de nettoyage. En effet, comme cela est décrit par le WO 2009/153504 A1 précité, la rotation peut être opérationnelle lorsque des moyens d'indexage font tourner le carrousel pour amener les conteneurs sélectionnés en position de prélèvement. Hors indexation, le carrousel est par ailleurs mis en rotation, continue ou par intervalles, afin de produire un champ de gravité tournant propre à éviter la sédimentation des particules présentes en suspension dans les teintes de base contenues dans les poches des conteneurs. Les brosses peuvent éventuellement être escamotées en dehors des périodes de nettoyage, quand le dispositif n'est pas utilisé, notamment pour réduire l'usure des bouts sphériques des valves après que celle-ci aient été nettoyées. L'escamotage peut être déclenché automatiquement après une période de temps donnée (par exemple une heure) ou un nombre prédéterminé de révolutions du carrousel après la dernière utilisation du dispositif. On the other hand, during cleaning the dry brush or brushes are fixed relative to the rotating elements such as the carousel valves driven by a rotational movement, these brush then being secured to a frame of the dispensing device. This configuration has the advantage of ensuring a permanent cleaning of the valves because the carousel of the device is always driven by a rotational movement in which the valves necessarily come into contact with the cleaning brush or brushes. Indeed, as described by WO 2009/153504 A1 cited above, the rotation can be operational when indexing means rotate the carousel to bring the selected containers in the sampling position. Without indexation, the carousel is also rotated, continuously or at intervals, in order to produce a rotating gravity field capable of preventing the sedimentation of the particles present in suspension in the basic colors contained in the pockets of the containers. The brushes may optionally be retracted outside the cleaning periods, when the device is not used, in particular to reduce the wear of the spherical tips of the valves after the latter have been cleaned. The retraction can be triggered automatically after a given period of time (for example one hour) or a predetermined number of revolutions of the carousel after the last use of the device.
Selon un premier mode de réalisation, le système de nettoyage comprend au moins une brosse disposée sur un trajet circulaire de valves. En d'autres termes, chaque rangée circonférentielle comporte une ou plusieurs brosses qui lui sont propres. According to a first embodiment, the cleaning system comprises at least one brush disposed on a circular path of valves. In other words, each circumferential row has one or more brushes that are specific to it.
Selon un deuxième mode de réalisation, le système de nettoyage com- prend au moins une brosse disposée sur une pluralité de trajets circulaires de valves. Dans ce cas, plusieurs rangées circonférentielles partagent une ou plusieurs mêmes brosses.  According to a second embodiment, the cleaning system comprises at least one brush disposed on a plurality of circular valve paths. In this case, several circumferential rows share one or more same brushes.
Avantageusement, ladite brosse est configurée pour présenter une profondeur variable de pénétration des valves dans la brosse. On obtient de cette manière un nettoyage progressif des valves en commençant, par exemple, par un nettoyage grossier où la profondeur de pénétration dans la brosse est importante pour terminer par un nettoyage plus fin du bout sphérique des valves par affleurement sur l'extrémité des poils de brosse. L'invention prévoit également que ladite brosse est placée en sortie d'un poste de prélèvement de produits liquides du dispositif de distribution, c'est à dire à proximité et en aval du poste de prélèvement par rapport à la rotation du carrousel, ceci afin que les valves sélectionnées puissent être nettoyées au plus tôt après expulsion de la peinture et avant que cette dernière n'ait eu le temps de sécher ou de couler le long du bout sphérique.  Advantageously, said brush is configured to have a variable depth of penetration of the valves in the brush. In this way, a gradual cleaning of the valves is achieved, for example by a coarse cleaning where the depth of penetration into the brush is important to finish by a finer cleaning of the spherical tip of the valves by outcropping on the ends of the bristles. of brush. The invention also provides that said brush is placed at the outlet of a liquid product sampling station of the dispensing device, that is to say near and downstream of the sampling station with respect to the rotation of the carousel, in order to that the selected valves can be cleaned at the earliest after expulsion of the paint and before it has had time to dry or flow along the spherical tip.
Dans le même but, le dispositif conforme à l'invention comprend deux brosses placées de part et d'autre du poste de prélèvement de produits liquides du dispositif de distribution. Cette disposition est particulièrement avantageuse lorsque le dispositif de distribution comprend un moyen d'inversion du sens de rotation, puisque le nettoyage précoce de la valve peut être obtenu en sortie du poste de prélèvement quel que soit le sens de rotation du carrousel. De plus, il est possible de réaliser un nettoyage symétrique du bout sphérique des valves en inversant le sens de rotation. Enfin, selon un mode particulier de réalisation de l'invention, un bac col- lecteur de poussières est situé sous la brosse, afin de recueillir les pous- sières dégagées par le frottement des poils sur les valves et éviter qu'elles ne se dispersent et viennent éventuellement polluer et affecter le fonctionnement de certains organes sensibles du dispositif de distribution. Un avantage du système de nettoyage proposé par l'invention est sa faci- lité de conception et de réalisation, ce qui se traduit par un coût réduit. Un autre avantage est qu'il ne nécessite qu'une maintenance très limitée, puisqu'il n'y a pas de réserve de solvant à maintenir à niveau ni de système d'essuyage à garder humide et propre. 0 For the same purpose, the device according to the invention comprises two brushes placed on either side of the liquid product sampling station of the dispensing device. This arrangement is particularly advantageous when the dispensing device comprises means for reversing the direction of rotation, since the early cleaning of the valve can be obtained at the outlet of the sampling station irrespective of the direction of rotation of the carousel. In addition, it is possible to perform a symmetrical cleaning of the ball end of the valves by reversing the direction of rotation. Finally, according to a particular embodiment of the invention, a dust collector is located under the brush, in order to collect the dust particles. These are released by the friction of the hairs on the valves and prevent them from dispersing and eventually pollute and affect the operation of certain sensitive organs of the dispensing device. One advantage of the cleaning system provided by the invention is its ease of design and construction, which results in reduced cost. Another advantage is that it requires only a very limited maintenance, since there is no reserve of solvent to maintain level and wiper system to keep wet and clean. 0
On va maintenant décrire un exemple de mise en œuvre du dispositif de l'invention, en référence aux dessins annexés où les mêmes références numériques désignent d'une figure à l'autre des éléments identiques ou fonctionnellement semblables. An embodiment of the device of the invention will now be described with reference to the appended drawings in which the same reference numerals designate identical or functionally similar elements from one figure to another.
La Figure 1 a est une vue de face d'un dispositif rotatif de distribution de produits liquides conforme à l'invention.  Figure 1a is a front view of a rotary device for dispensing liquid products according to the invention.
La Figure 1 b est une vue en perspective du dispositif de la Figure 1 a. La Figure 2 est une vue de détail du dispositif de la Figure 1 a.  Figure 1b is a perspective view of the device of Figure 1a. Figure 2 is a detail view of the device of Figure 1a.
La Figure 3 est une vue en perspective d'une brosse incurvée destinée à équiper le dispositif des Figures 1 a et 1 b. Figure 3 is a perspective view of a curved brush for fitting the device of Figures 1a and 1b.
0 Sur les Figures 1 a et 1 b est représenté un dispositif rotatif de distribution de produits liquides, notamment de teintes de base pour peinture, du type de celui décrit dans le WO 2009/153504 A1 précité. In Figures 1a and 1b there is shown a rotary device for dispensing liquid products, in particular paint basecoats, of the type described in the aforementioned WO 2009/153504 A1.
Ce dispositif est construit autour d'un bâti fixe 10 comportant en particulier un poste 1 1 de prélèvement comprenant un récipient collecteur, non re- présenté, dans lequel sont recueillies les teintes de base de la peinture à réaliser. Ces teintes de base sont contenues dans des poches défor- mables 21 , 22, 23 dont elles peuvent être expulsées à travers les valves 31 , 32, 33 de dosage de la Figure 1 b, lesquelles sont référencées globalement 30 sur les Figures 1 a et 2. Les poches déformables 21 , 22, 23 et les valves 31 , 32, 33 de dosage des Figures 1 a, 1 b et 2 sont montées selon trois rangées circonféren- tielles parallèles sur un carrousel mobile en rotation autour du bâti fixe 10. Bien entendu, le nombre de rangées circonférentielles peut être quel- conque. This device is built around a fixed frame 10 including in particular a 1 1 sampling station comprising a collector container, not shown, in which are collected the basic colors of the paint to achieve. These base colors are contained in deformable pockets 21, 22, 23 from which they can be expelled through the metering valves 31, 32, 33 of Figure 1b, which are referenced generally in FIGS. 2. The deformable pockets 21, 22, 23 and the metering valves 31, 32, 33 of FIGS. 1a, 1b and 2 are mounted in three parallel circumferential rows on a carousel that is rotatable around the fixed frame 10. Of course the number of circumferential rows may be any.
Compte tenu de la couleur de peinture à reproduire, un certain nombre de poches déformables sont sélectionnées automatiquement par le dispositif de distribution à partir des prescriptions des fabricants de peinture. Les poches ainsi sélectionnées sont successivement amenées par des moyens d'indexation en regard du poste 1 1 de prélèvement. L'expulsion d'une quantité prédéterminée de teinte dans le récipient collecteur du poste 1 1 de prélèvement est alors commandée par des moyens de dosage.  Given the paint color to be reproduced, a number of deformable pockets are automatically selected by the dispensing device from the prescriptions of the paint manufacturers. The pockets thus selected are successively brought by indexing means opposite the sampling station 1 1. The expulsion of a predetermined amount of color into the collection container of the sampling station 1 1 is then controlled by dosing means.
Dans le mouvement de rotation qui leur est imposé par le carrousel 20, les valves de chaque rangée circonférentielle décrivent un trajet circulaire noté respectivement TC1 , TC2, TC3 sur la Figure 1 b, et globalement TC sur la Figure 1 a.  In the rotational movement imposed on them by the carousel 20, the valves of each circumferential row describe a circular path respectively denoted TC1, TC2, TC3 in FIG. 1b, and globally TC in FIG. 1a.
Afin de résoudre les problèmes liés au nettoyage des valves 31 , 32, 33 de dosage évoqués plus haut, le dispositif rotatif de distribution montré sur les Figures 1 a, 1 b et 2 est équipé d'un système de nettoyage comprenant, d'une manière générale, au moins une brosse sèche fixée au bâti fixe 10 du dispositif disposée sur au moins un trajet circulaire de manière à venir en contact par frottement avec les valves d'au moins une rangée circonférentielle de valves.  In order to solve the problems related to the cleaning of the dosing valves 31, 32, 33 referred to above, the rotary dispensing device shown in FIGS. 1a, 1b and 2 is equipped with a cleaning system comprising, of a in general, at least one dry brush fixed to the fixed frame of the device disposed on at least one circular path so as to come into frictional contact with the valves of at least one circumferential row of valves.
Dans le mode de réalisation particulier représenté sur les figures précitées, le système de nettoyage comprend cinq brosses, à savoir la brosse 41 à laquelle correspond par rotation de 180° la brosse 42, la brosse 51 à laquelle correspond également par rotation de 180° la brosse 52, et une brosse centrale 60. In the particular embodiment shown in the aforementioned figures, the cleaning system comprises five brushes, namely the brush 41 to which the brush 42 corresponds by rotation of 180 °, the brush 51 to which is also rotated by 180 ° the brush 52, and a central brush 60.
Ces brosses sont utilisées sans addition d'un solvant quelconque, d'où leur qualificatif de "sèche". Le nettoyage du conduit 301 et du bout sphé- rique 302 des valves n'est obtenu que par frottement avec les poils des brosses. Pour limiter l'effet abrasif sur les valves, les poils sont de préférence en nylon. D'autre part, ces brosses sont fixes au sens où, étant fixées au bâti 10, leur position est indépendante de la rotation du carrousel 20. Le frottement entre les valves et les brosses résulte de leur mouvement de rotation relatif. These brushes are used without the addition of any solvent, hence their term "dry". The cleaning of the conduit 301 and the spherical tip 302 of the valves is obtained only by friction with the bristles of the brushes. To limit the abrasive effect on the valves, the bristles are preferably nylon. On the other hand, these brushes are fixed in the sense that, being fixed to the frame 10, their position is independent of the rotation of the carousel 20. The friction between the valves and the brushes results from their relative rotational movement.
On peut observer que dans l'exemple de réalisation des Figures 1 a, 1 b et 2 les brosses 41 , 42, 51 , 52, 60 sont planes et sont disposées transversalement sur l'ensemble des trajets circulaires TC1 , TC2, TC3. En d'autres termes, les valves des trois rangées circonférentielles partagent les cinq brosses en commun. Dans ce cas, la largeur ί des brosses 41 , 42, 51 , 52, 60 est au moins égale à la distance entre les rangées circonférentielles extrêmes de valves, tandis que leur longueur L est déterminée pour permettre un nettoyage suffisant, et peut ne concerner qu'une valve à la fois prise sur chaque rangée circonférentielle, ainsi que le montrent les Figures 1 a, 1 b et 2. It can be observed that in the embodiment of Figures 1a, 1b and 2 the brushes 41, 42, 51, 52, 60 are flat and are arranged transversely on all circular paths TC1, TC2, TC3. In other words, the valves of the three circumferential rows share the five brushes in common. In this case, the width ί of the brushes 41, 42, 51, 52, 60 is at least equal to the distance between the extreme circumferential rows of valves, while their length L is determined to allow sufficient cleaning, and may not concern that one valve at a time taken on each circumferential row, as shown in Figures 1a, 1b and 2.
Différentes variantes peuvent être envisagées par rapport à la configuration montrée sur ces figures. Different variants can be envisaged with respect to the configuration shown in these figures.
Ainsi, comme on peut le voir sur la Figure 3, les brosses peuvent être incurvées selon une forme générale d'arc de cercle de rayon de courbure voisin de celui des trajets circulaires TC1 , TC2, TC3. Dans l'exemple pro- posé, la longueur angulaire de la brosse est d'environ 50°.  Thus, as can be seen in FIG. 3, the brushes can be curved in a generally arcuate shape with a radius of curvature close to that of the circular paths TC1, TC2, TC3. In the proposed example, the angular length of the brush is about 50 °.
D'autre part, cette même figure illustre une brosse 80 destinée à être disposée sur une seule rangée circonférentielle de valves. La brosse a alors une largeur au moins égale au diamètre des valves. Les poils 81 sont implantés dans des trous 82 en quinconce sur trois rangées, les trous d'une même rangée étant distant angulairement de 2°, ce qui donne au total un nombre de trous de l'ordre de 125. Le nombre de poils par trou peut varier de 150 à 200. Avec ce type de brosse, plusieurs valves d'une même rangée sont nettoyées en même temps par la même brosse.  On the other hand, this same figure illustrates a brush 80 to be disposed on a single circumferential row of valves. The brush then has a width at least equal to the diameter of the valves. The bristles 81 are implanted in holes 82 staggered in three rows, the holes of the same row being angularly spaced 2 °, which gives a total number of holes of the order of 125. The number of hairs per hole can vary from 150 to 200. With this type of brush, several valves of the same row are cleaned at the same time by the same brush.
Comme le montre plus particulièrement la Figure 1 a, les brosses 41 et 51 sont placées de part et d'autre du poste 1 1 de prélèvement des teintes de base. Cette configuration correspond à un dispositif de distribution équipé de moyens d'inversion du sens de rotation du carrousel 20. En effet, quel que soit le sens de rotation, une brosse, 41 ou 51 , se trouve immédiatement en sortie du poste 1 1 de prélèvement, ce qui permet un nettoyage précoce de la valve après expulsion de la teinte. Hors situation de prélè- vement, la rotation permanente du carrousel évite la sédimentation des teintes dans les poches, et l'inversion périodique du sens de rotation permet de symétriser le nettoyage des valves et donc de traiter l'ensemble de la surface du bout sphérique des valves. As shown more particularly in Figure 1a, the brushes 41 and 51 are placed on either side of the station 1 1 picking basic colors. This configuration corresponds to a dispensing device equipped with means for reversing the direction of rotation of the carousel 20. In fact, whatever the direction of rotation, a brush, 41 or 51, is immediately at the outlet of the station 1 1 of sampling, which allows an early cleaning of the valve after expulsion of the hue. Excluding the situation In fact, the permanent rotation of the carousel avoids the sedimentation of the hues in the pockets, and the periodic reversal of the direction of rotation makes it possible to symmetrize the cleaning of the valves and thus to treat the entire surface of the spherical tip of the valves.
En l'absence d'inversion du sens de rotation, l'une des brosses 41 ou 51 peut être supprimée, ainsi qu'éventuellement la brosse 42 ou 52 diamétralement opposée. In the absence of reversal of the direction of rotation, one of the brushes 41 or 51 may be omitted, as well as possibly the brush 42 or 52 diametrically opposite.
La Figure 1 a montre la présence sous les brosses supérieures 41 , 51 de deux bacs 71 , 72 pour la récupération et l'élimination des poussières pro- duites par le frottement des poils de brosses sur les valves.  Figure 1a shows the presence under the upper brushes 41, 51 of two trays 71, 72 for the recovery and removal of dust produced by the friction of the brush bristles on the valves.
Il peut y avoir avantage à réaliser une profondeur de pénétration variable de la valve dans les poils de brosses, par exemple en laissant dans un premier temps la valve pénétrer sur une profondeur de plusieurs millimètres afin d'être grossièrement nettoyée pour n'être ensuite qu'effleurée sur une profondeur très faible afin d'optimiser le nettoyage du bout sphérique de la valve.  It may be advantageous to achieve a variable depth of penetration of the valve into the bristles, for example by initially leaving the valve to penetrate to a depth of several millimeters to be roughly cleaned and then only touched to a very small depth to optimize the cleaning of the spherical tip of the valve.
Dans ce but, et comme l'indique à la Figure 2, on peut donner aux brosses, à l'image de la brosse plane 42, une inclinaison par rapport à la tangente T du trajet circulaire correspondant au niveau de la valve 30. Cette inclinaison est représentée par l'angle a sur la Figure 2. La même disposition s'applique aux brosses incurvées.  For this purpose, and as indicated in FIG. 2, it is possible to give the brushes, in the image of the plane brush 42, an inclination with respect to the tangent T of the circular path corresponding to the level of the valve 30. tilt is represented by the angle a in Figure 2. The same provision applies to curved brushes.

Claims

REVENDICATIONS
1 . Dispositif rotatif de stockage et de distribution de produits liquides, notamment de teintes de base pour peinture automobile, comportant des valves de dosage (31 , 32, 33) disposées selon au moins une rangée cir- conférentielle de sorte que les valves d'une rangée circonférentielle décri- vent un trajet circulaire (TC1 , TC2, TC3) lors de la rotation du dispositif de distribution, 1. Rotary device for storing and dispensing liquid products, in particular base colors for automotive paint, comprising metering valves (31, 32, 33) arranged in at least one circumferential row so that the valves of a row circumferential describe a circular path (TC1, TC2, TC3) during rotation of the dispensing device,
caractérisé en ce qu'il comporte en outre un système de nettoyage des valves comprenant au moins une brosse sèche (41 , 42, 51 , 52, 60) fixe pendant le nettoyage, disposée sur au moins un trajet circulaire (TC1 , TC2, TC3) de manière à venir en contact par frottement avec les valves d'au moins une rangée circonférentielle de valves. characterized in that it further comprises a valve cleaning system comprising at least one dry brush (41, 42, 51, 52, 60) fixed during the cleaning, arranged on at least one circular path (TC1, TC2, TC3 ) to frictionally engage the valves of at least one circumferential row of valves.
2. Dispositif selon la revendication 1 , dans lequel le système de nettoyage comprend au moins une brosse (80) disposée sur un trajet circulaire de valves. 2. Device according to claim 1, wherein the cleaning system comprises at least one brush (80) disposed on a circular path of valves.
3. Dispositif selon la revendication 1 , dans lequel le système de nettoyage comprend au moins une brosse (41 , 42, 51 , 52, 60) disposée sur une pluralité de trajets circulaires (TC1 , TC2, TC3) de valves. 3. Device according to claim 1, wherein the cleaning system comprises at least one brush (41, 42, 51, 52, 60) disposed on a plurality of circular paths (TC1, TC2, TC3) valves.
4. Dispositif selon la revendication 1 , dans lequel ladite brosse (80) est incurvée. The device of claim 1, wherein said brush (80) is curved.
5. Dispositif selon la revendication 1 , dans lequel ladite brosse (41 , 42, 51 , 52, 60) est plane. 5. Device according to claim 1, wherein said brush (41, 42, 51, 52, 60) is flat.
6. Dispositif selon l'une des revendications 4 ou 5, dans lequel ladite brosse est configurée pour présenter une profondeur variable de pénétration des valves (31 , 32, 33) dans la brosse. 6. Device according to one of claims 4 or 5, wherein said brush is configured to have a variable depth of penetration of the valves (31, 32, 33) in the brush.
7. Dispositif selon la revendication 1 , dans lequel ladite brosse (41 , 51 ) est placée en sortie d'un poste (1 1 ) de prélèvement de produits liquides du dispositif de distribution. 7. Device according to claim 1, wherein said brush (41, 51) is placed at the outlet of a station (1 1) for sampling liquid products from the dispensing device.
8. Dispositif selon la revendication 1 , comprenant un bac collecteur de poussières (71 ,72) situé sous la brosse (41 , 42). 8. Device according to claim 1, comprising a dust collector (71, 72) located under the brush (41, 42).
9. Dispositif selon l'une des revendications 7 ou 8, comprenant en outre une seconde brosse placée sensiblement à 180° de ladite brosse sur le trajet circulaire. 9. Device according to one of claims 7 or 8, further comprising a second brush placed substantially 180 ° of said brush in the circular path.
10. Dispositif selon l'une quelconque des revendications 7 à 9, comprenant deux brosses (41 , 51 ) placées de part et d'autre du poste (1 1 ) de prélèvement de produits liquides du dispositif. 10. Device according to any one of claims 7 to 9, comprising two brushes (41, 51) placed on either side of the station (1 1) for sampling liquid products from the device.
1 1 . Dispositif selon la revendication 1 , comprenant un moyen d'inversion du sens de rotation. 1 1. Device according to claim 1, comprising means for reversing the direction of rotation.
12. Dispositif selon la revendication 1 , dans lequel la brosse est constituée de poils en nylon. 12. Device according to claim 1, wherein the brush is made of nylon bristles.
13. Dispositif selon la revendication 1 , dans lequel la brosse est constituée de poils agencés en quinconce. 13. Device according to claim 1, wherein the brush is made of staggered hairs.
14. Dispositif selon la revendication 1 , dans lequel la brosse est une brosse escamotable en dehors des périodes de nettoyage, quand le dispositif n'est pas utilisé. 14. Device according to claim 1, wherein the brush is a retractable brush outside the cleaning periods, when the device is not used.
15. Dispositif selon la revendication 14, comprenant des moyens pour commander l'escamotage de la brosse automatiquement après une période de temps donnée ou un nombre prédéterminé de révolutions après la dernière utilisation du dispositif. 15. Device according to claim 14, comprising means for controlling the retraction of the brush automatically after a given period of time or a predetermined number of revolutions after the last use of the device.
EP11817343.4A 2010-12-14 2011-12-14 Rotary device for the storage and distribution of liquid products, such as base colours for automotive paint Not-in-force EP2651574B1 (en)

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Application Number Priority Date Filing Date Title
FR1060479A FR2968576B1 (en) 2010-12-14 2010-12-14 ROTARY DEVICE FOR STORING AND DISPENSING LIQUID PRODUCTS, IN PARTICULAR BASIC COLORS FOR AUTOMOBILE PAINT
PCT/FR2011/052995 WO2012080667A2 (en) 2010-12-14 2011-12-14 Rotary device for the storage and distribution of liquid products, such as base colours for automotive paint

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EP2651574B1 (en) 2015-02-11
WO2012080667A2 (en) 2012-06-21
US20130248561A1 (en) 2013-09-26
FR2968576A1 (en) 2012-06-15
WO2012080667A3 (en) 2012-12-20
FR2968576B1 (en) 2012-12-28

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