EP0423041A1 - Method and device for spray application of product by orientable guns and spray booth for using this device - Google Patents

Method and device for spray application of product by orientable guns and spray booth for using this device Download PDF

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Publication number
EP0423041A1
EP0423041A1 EP90402873A EP90402873A EP0423041A1 EP 0423041 A1 EP0423041 A1 EP 0423041A1 EP 90402873 A EP90402873 A EP 90402873A EP 90402873 A EP90402873 A EP 90402873A EP 0423041 A1 EP0423041 A1 EP 0423041A1
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EP
European Patent Office
Prior art keywords
gun
conveyor
angle
support shaft
orientation
Prior art date
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Granted
Application number
EP90402873A
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German (de)
French (fr)
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EP0423041B1 (en
Inventor
Christian Le Conte De Poly
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Cattinair
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Cattinair
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Priority to AT90402873T priority Critical patent/ATE100357T1/en
Publication of EP0423041A1 publication Critical patent/EP0423041A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads

Definitions

  • the present invention relates to a method of applying by spraying a coloring or treatment product to bodies displaced linearly by a flat conveyor, from at least one gun, driven by a movable member along a closed path, and of which the geometric projection on the plane of the conveyor cuts an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, by a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun.
  • a device comprising at least one gun driven by a movable member, constituted by a drive arm of a rotating carousel, by means of a support shaft on which it is fixed in an orientation given by said angles.
  • Such a device is an integral part of a spray booth.
  • the rotating carousel is composed of a plurality of drive arms mounted on a central shaft driven by a variable speed drive. The therefore, it is rotatable and fits into a circle. On the spokes of the circle are arranged the drive arms on which the guns are fixed by means of a support shaft. The guns have a predetermined orientation but fixed relative to each drive arm. However, the relative position of the latter relative to the axis of movement of the conveyor is variable during rotation according to the angle formed by said axis with each of the radial drive arms.
  • This has the disadvantage of spraying the application product on the body at different successive angles of attack, causing overlapping and crossing zones which are not uniform, favoring some at the expense of others, depending on the position of the body on the carrier.
  • Cabins of this type are also known, the product application device of which comprises a rotating carousel, the drive arms of which are disposed around the periphery of a belt or chain transmission member driven by a motor, and describing above the conveyor a trajectory cutting perpendicularly the axis of movement of the conveyor, over the entire width of the latter, successively upstream and downstream in opposite directions.
  • Such a device makes it possible to obtain a relative position of the drive arms from which the guns constant relative to the axis of movement of the conveyor.
  • the speed of the drive arms is limited due to the accelerations when the direction of movement of the arms changes relative to the axis of the conveyor.
  • such a device comprises a complicated mechanism and this is expensive to maintain due to the mist produced by the spraying and which is deposited.
  • the orientation of the guns is also fixed relative to the drive arm, as mentioned above in the rotary device, which excludes any possibility of communicating to the gun a variation of orientation relative to its corresponding training arm, at a given instant, as a function of a particular contour of the body to be colored or treated.
  • the object of the present invention is to remedy these drawbacks and for this purpose relates to a method of application by spraying a coloring product or a treatment of bodies displaced linearly by a flat conveyor, from at least one gun , driven by a movable member along a closed path, the geometric projection of which on the plane of the conveyor intersects an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun, characterized in that the orientation of the gun is modifiable by variation of at least one of its three angles independently of the corresponding movable member.
  • another characteristic of the invention relates to a device comprising at least one gun driven by a movable member constituted by a drive arm of a rotating carousel, by means of a shaft support on which it is fixed in an orientation given by said first, second and third angles, characterized in that it comprises means for controlling the orientation of the gun so as to modify at least one of its angles, independently of the drive arm.
  • the orientation of the gun relative to the drive member can be variable independently of the latter, thus offering any possibility of orientation of the gun relative to the axis of movement of the conveyor, the plane of the conveyor and the spray axis of the gun.
  • the present invention also relates to the following characteristics, considered in isolation or in all their technically possible combinations:
  • the device comprises means for controlling the orientation of the pistol sliding on said pistol to modify said first angle.
  • said means for controlling the orientation of the gun consist of a finger secured to the support shaft and the free end of which is in contact with a fixed track in the form of a ramp and of which the profile, which is variable in a plane perpendicular to that of the conveyor, is capable of acting, by appropriate means, on the gun to modify the first angle.
  • the means for controlling the orientation of the gun act on the support shaft, by rotary action on itself, to modify the second angle.
  • the means for controlling the orientation of the gun consist of a follower finger secured to a support shaft whose free end is in contact with a fixed track in the form of a ramp, the profile, variable in the plane of the conveyor, is capable of rotating said support shaft on itself, to modify the second angle, depending on the orientation of the gun.
  • the follower finger has at its free end, in contact with the fixed track, a rotary roller.
  • the support shaft is mounted on the drive arm by means of at least one bearing in which it pivots under the influence of the follower finger.
  • a return system is interposed between the support shaft and the drive arm, in order to resiliently return the follower finger against the fixed track.
  • the support shaft pivots on two bearings arranged on a base substantially perpendicular to the drive arm and between which bearings is positioned the follower finger integral with said support shaft.
  • the rotating roundabout is part of a circle, on at least one radius of which is arranged a rotation drive arm of a pistol.
  • a rotary carousel has the advantage of being simpler in design, but the invention is not limited thereto.
  • the profile of the fixed track reproduced by the follower finger integral with the pistol support shaft is capable of imparting to said support shaft, a rotation on itself, such as to maintain a constant value of its second angle relative to the axis of movement of the conveyor, during at least a first useful part of its curvilinear trajectory corresponding to the width of the conveyor.
  • the width of the fixed track measured perpendicular to the axis of the conveyor is greater than the width of the latter, so as to determine two dead zones located laterally on the side and other side of said transporter and in that the profile of the fixed track at the dead zones is such that it modifies the second angle of a pistol so as to give the latter, over a second useful part of its curvilinear trajectory , corresponding to the width of the conveyor, an orientation relative to the axis of movement of the conveyor, which is parallel but opposite in direction to that of this same pistol in said first useful part of its curvilinear trajectory.
  • rotary carousel can rotate inside and outside the fixed track in the form of a ramp.
  • the device comprises control means which are associated with at least one gun, these means being able to vary the third angle of said gun.
  • control means are associated with at least one support shaft to vary its position along a vertical axis and its angle relative to said vertical axis.
  • control means are associated with at least one gun for varying the grammage as a function of the geometry of the part to be sprayed.
  • the device comprises control means by automatic control of the gun orientation system, automatically and continuously.
  • the spray booth 1 designated as a whole is intended for the application of paints, lacquers, varnishes and spray treatment products on profiled flat surfaces and simultaneously on its songs, which we will call here, panels 2.
  • the panels to be treated are deposited at the entrance to cabin 1 on a flat strip conveyor 3, with linear movement and vehicle butted by it, at a controlled speed.
  • the conveyor belts are driven by pulleys 4 and are constituted by steel blades cleaned at each turn by a double cleaning device, one not visible at the exit of the cabin and the other 5 at the entrance. .
  • These devices generally consist of scrapers of brass brushes dipping in a solvent and of felts. In this way, after each passage in cabin 1, the steel blades are perfectly cleaned before returning to the entrance to the cabin.
  • the product not shown economizer device is used to trigger the spraying only on the solid surfaces of the panels which pass on the conveyor 3. This results in a double advantage; product economy; less material to filter before evacuating the ambient air outside.
  • the economizer comprises the following essential organs, partially visible, a detection bridge 10 at the entrance to the cabin 1, located on one side of the transporter 3 and struck by a light beam emanating from a source 11 located from the other side of the carrier; an advance speedometer; a rotation speedometer of a rotor of the merry-go-round; an adjustable electronic control unit.
  • a body or panel 2 to be treated passes over the detection bridge 10.
  • the latter records the image of the panel.
  • the image is transmitted to an electronic memory and advances in this memory at the same speed as the panel 2 on the conveyor 3 thanks to the advance speed counter.
  • Another synchronization device linked to the mechanical drive system of the merry-go-round 8 records the position and the speed of the pistols 12 which are attached to it.
  • the memory orders them to open and close according to the shape and the information received by the synchronizers.
  • the pistols 12 are opened and closed by a solenoid valve 13.
  • the actual spraying device therefore includes the rotary carousel 8 and the spraying apparatus.
  • the latter is essentially composed of the pistols 12 actuated by solenoid valves 13 controlled by the economizer and adjusted according to parameters such as: spraying air pressure, product pressure, product flow rate, jet width, position of the guns in height and in inclination relative to the surface to be treated.
  • Each gun projects a jet whose section is generally substantially oval and which has an angle which can vary by ⁇ 90 ° with respect to the spraying axis of the gun.
  • the rotary carousel 8 is composed of a plurality of movable radial members or drive arm 14, in this case eight in number, driving in rotation one or two guns 12 per arm 14 so vant a closed circular path, by means of the support shaft 15 on which they are fixed.
  • the geometric projection of the circular path on the plane of the conveyor 3 intersects the axis of movement F thereof, successively upstream and downstream, in opposite directions, each of the guns 12 being inclined simultaneously by a first angle by relative to the plane of the conveyor 3, a second angle relative to the axis of movement F of said conveyor 3 and a third angle relative to the axis of spraying of said gun, these three angles defining the overall orientation of the pistols 12 in rotary movement in the direction R of the armory 8.
  • the guns 12, with electric current, compressed air and product, are supplied by manifold and rotary joints which will not be described here.
  • the merry-go-round 8 is driven by a motor variator 16, the speed of rotation of which is adjusted as a function of the speed of advance of the transporter and the width of the jet of the pistols 12.
  • a suction and filtration device 17 is placed inside the cabin 1, ventilated, vertically.
  • the air is extracted at the base of the cabin by two ducts (not visible) leading on the top to two filters and a fan.
  • the filtered air is exhausted outside by a chimney.
  • Air is introduced into the cabin either through an open top of the cabin or via a filtering ceiling in the case of pressurized cabins.
  • the air circulates vertically in the direction of spraying of the guns 12.
  • a curtain of high-flow water 18 forms two screens of water that the sucked air must pass through, leaving a good part of the spray waste therein.
  • the two water screens are supplied by a high flow pump driven by a motor.
  • the orientation of the guns 12 can be modified by variation of at least one of its three angles ⁇ 1, ⁇ 2, and ⁇ 3, independently of the movable member or drive arm 14 .
  • control means 19 for the orientation of the guns 12 act on each of their own support shaft 15 of which they are integral so as to modify the angle ⁇ 2, independently of the drive arms 14.
  • the control means 19 for the orientation of each gun 12 act on the support shaft 15, by action rotatable on itself in order to modify the second angle ⁇ 2, that is to say the angle of the gun 12 relative to the axis of movement F of the conveyor 3.
  • the control means 19 for the orientation of the gun 12 are constituted by a follower finger 20, integral with the support shaft 15, and the free end of which is provided with a rotary roller 21 in contact with a fixed track 22 in the form of a ramp inside which rotates the rotary carousel 8 which forms part of a circle.
  • the ramp 22 may be disposed inside said rotary carousel 8.
  • the predetermined profile of said ramp 22 is variable in the plane of the conveyor and able to rotate the support arm 15, around its axis in the direction R1, to modify the second angle ⁇ 2 according to the orientation of the gun 12 to be obtained.
  • the angle ⁇ 2 of the pistol 12 formed with the axis of movement F of the conveyor 3 is constant during a first useful part L1 of the curvilinear trajectory of said pistol above the conveyor 3 on which the panels 2. It is obvious that the angle ⁇ 2 can also be modified at any point of the trajectory, by a modification of a corresponding zone of the ramp 22. In fact, such means allow a total control of the orientation of the pistol, not influenced by the rotation of the armory 8.
  • the support shaft 15 is mounted on the drive arm 14 by means of two bearings 23 in which it pivots under the influence of the follower finger 20, itself driven in angular variation in function of the profile of the ramp 22.
  • the two bearings 23 are arranged on a base 24 perpendicular to the drive arm 14 on which it is fixed, bearings 23 between which is positioned said follower finger 20 integral with the support shaft 15.
  • a return system such as a return spring 29, or any other equivalent device is interposed between the support shaft 15 and the drive arm 14.
  • the width L2 of the fixed track 22 in the form of a ramp, measured perpendicular to the longitudinal axis XX ′ of the conveyor 3 which merges with an axis of the merry-go-round 8, is greater than the width of said conveyor 3.
  • eccentric parts 27 , 28 of the ramp 22 are obtained symmetrically with respect to the axis XX ′ and determine, relative to the width of the conveyor 3, two lateral dead zones 25 and 26.
  • the eccentric parts 27, 28 are such as to modify, on the corresponding path of the gun 12, the second angle ⁇ 2 of the latter. This is so that the gun 12, after having passed through a first useful part L1 of the conveyor 3 downstream, approaches a second useful part L1 ′ of the conveyor 3 upstream, after having undergone a variation in orientation relative to the axis of displacement F of said conveyor, on passing the eccentric part 27.
  • This variation is such as to obtain a projection of product, parallel but in opposite direction to that obtained by this same gun 12 when it was located symmetrically in the first useful part L1 of its curvilinear trajectory.
  • the gun 12 After having crossed the second useful part L1 ′ at an angle ⁇ 2 also constant with respect to the axis of movement F, the gun 12 returns to its initial orientation when the concentric part 28 of the ramp 22 passes, for a new rotation cycle ride 8.
  • the track 22 is in a horizontal plane and the angle ⁇ 1 of the pistols relative to the plane of the conveyor is fixed.
  • a variation of the angle ⁇ 1 can be obtained by modifying the track 22 so that it has a variable profile with respect to the plane of the conveyor, this profile being determined in an appropriate manner.
  • a second finger integral with the support shaft 15 and whose free end is also in contact with the fixed track 22 in the form of a ramp.
  • this track has variations in a plane perpendicular to the plane of the conveyor, that is to say in a substantially vertical plane.
  • the finger follows the evolution of the track in this substantially vertical plane and transmits it, by appropriate means, to the pistol so as to modify the angle ⁇ 1 accordingly.
  • the variation of the first and / or second angle (s) is obtained by means of a ramp-shaped track.
  • This track can of course be replaced by any equivalent means (cams, gears, etc.).
  • Additional means can be provided for controlling the position of a support shaft along a vertical axis and / or the angle of this support shaft relative to said vertical axis. These means are not shown in the figures.
  • the quality of the spray is better if the section of the spray jet, at the level of the part, is constant. We can then act on the support shaft to obtain a constant section.
  • a heavier grammage on a determined surface can be made necessary by the complexity of a particular relief on the part to be covered or by an absorption coefficient of the non-homogeneous product.
  • a sensor working continuously is placed at the entrance to the spray booth, recording the three-dimensional characteristics of the parts to be covered.
  • An example of this sensor can be constituted by a laser plane having an incidence of 45 ° (or other) relative to the conveying plane and a matrix camera provided with a filter and observing the profile of intersection with the panels at 90 ° , with respect to the laser plane.

Landscapes

  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The method relates to the coloration or treatment of bodies which are moved linearly by means of a planar conveyor by means of at least one gun (12) driven by a movable member (14) following a closed trajectory of which the geometrical projection on the conveyor plane (3) intersects a displacement axis (F) of said conveyor (3), each of the guns (12) being simultaneously inclined by a first angle alpha 1 with respect to the plane of the conveyor (3), by a second anble alpha 2 with respect to the displacement axis (F) of said conveyor (3) and by a third angle alpha 3 with respect to the spraying axis of the gun. According to such method, the orientation of the gun (12) may be changed by modifying at least one of the three angles ( alpha 1, alpha 2, alpha 3) independently of the corresponding movable member (14).

Description

La présente invention concerne un procédé d'application par pulvérisation d'un produit de coloration ou de traitement de corps déplacés li­néairement par un transporteur plan, à partir d'au moins un pistolet, entraîné par un organe mobile suivant une trajectoire fermée, et dont la projection géométrique sur le plan du transpor­teur coupe un axe de déplacement dudit transpor­teur successivement en amont et en aval, dans des sens opposés , chacun des pistolets étant incliné simultanément d'un premier angle par rapport au plan du transporteur , d'un deuxième angle par rapport à l'axe de déplacement dudit trans­porteur et d'un troisième angle par rapport à l'axe de pulvérisation du pistolet .The present invention relates to a method of applying by spraying a coloring or treatment product to bodies displaced linearly by a flat conveyor, from at least one gun, driven by a movable member along a closed path, and of which the geometric projection on the plane of the conveyor cuts an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, by a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun.

Il est connu, pour la mise en oeuvre d'un tel procédé, un dispositif comprenant au moins un pistolet entraîné par un organe mobile,constitué par un bras d'entraînement d'un manège tournant, par l'intermédiaire d'un arbre support sur lequel il est fixé suivant une orientation donnée par lesdits angles.It is known, for the implementation of such a method, a device comprising at least one gun driven by a movable member, constituted by a drive arm of a rotating carousel, by means of a support shaft on which it is fixed in an orientation given by said angles.

Un tel dispositif fait partie intégrante d'une cabine de pistolage.Such a device is an integral part of a spray booth.

Dans une cabine de pistolage connue , équi­pée d'un dispositif d'application d'un produit par pulvérisation de ce type selon le procédé précité, le manège tournant est composé d'une pluralité de bras d'entraînement montés sur un arbre central entraîné par un motovariateur . Le manège est par conséquent rotatif et s'inscrit dans un cercle. Sur les rayons du cercle sont disposés les bras d'entraînement sur lesquels sont fixés les pistolets par l'intermédiaire d arbre support. Les pistolets ont une orienta­tion prédéterminée mais fixe par rapport à cha­que bras d'entraînement. Or , la position relative de ces derniers par rapport à l'axe de déplacement du transporteur est variable en cours de rotation selon l'angle formé par ledit axe avec chacun des bras d'entraînement radiaux . Ceci a pour inconvénient de pulvériser le pro­duit d'application sur le corps selon des angles d'attaque successifs différents , provoquant des zones de recouvrement et de croisement qui ne sont pas uniformes, en privilégiant certaines au détriment d'autres, selon la position du corps sur le transporteur.In a known spray booth, equipped with a device for applying a spray product of this type according to the aforementioned method, the rotating carousel is composed of a plurality of drive arms mounted on a central shaft driven by a variable speed drive. The therefore, it is rotatable and fits into a circle. On the spokes of the circle are arranged the drive arms on which the guns are fixed by means of a support shaft. The guns have a predetermined orientation but fixed relative to each drive arm. However, the relative position of the latter relative to the axis of movement of the conveyor is variable during rotation according to the angle formed by said axis with each of the radial drive arms. This has the disadvantage of spraying the application product on the body at different successive angles of attack, causing overlapping and crossing zones which are not uniform, favoring some at the expense of others, depending on the position of the body on the carrier.

Afin d'améliorer ce résultat de nom­breux essais ont été effectués en faisant varier le nombre de pistolets en action, ou encore en modifiant l'orientation des pistolets par rapport aux bras d'entraînement. Mais cette orientation restant fixe en cours de rotation, les résultats obtenus n'ont pas été significatifs . Il en a été de même en alternant des pistolets d'orientations différentes.In order to improve this result, numerous tests have been carried out by varying the number of pistols in action, or even by modifying the orientation of the pistols relative to the drive arms. However, this orientation remaining fixed during rotation, the results obtained were not significant. It was the same by alternating pistols of different orientations.

Il est également connu des cabines de ce type dont le dispositif d'application d'un produit comporte un manège tournant dont les bras d'entraînement sont disposés sur le pourtour d'un organe de transmission par courroie ou par chaîne entraîné par un moteur et décrivant au-dessus du transporteur une trajectoire coupant perpendi­culairement l'axe de déplacement du transporteur, sur toute la largeur de ce dernier, successive­ment en amont et en aval dans des sens opposés.Cabins of this type are also known, the product application device of which comprises a rotating carousel, the drive arms of which are disposed around the periphery of a belt or chain transmission member driven by a motor, and describing above the conveyor a trajectory cutting perpendicularly the axis of movement of the conveyor, over the entire width of the latter, successively upstream and downstream in opposite directions.

Un tel dispositif permet d'obtenir une position relative des bras d'entraînement d'où des pistolets constante par rapport à l'axe de déplacement du transporteur. Cependant, dans un tel dispositif, la vitesse des bras d'en­traînement est limitée du fait des accélérations lors du changement de sens de déplacement des bras par rapport à l'axe du transporteur. De plus, un tel dispositif comprend une mécanique compliquée et celle-ci est d'entretien onéreux du fait du brouillard produit par la pulvérisation et qui se dépose .Such a device makes it possible to obtain a relative position of the drive arms from which the guns constant relative to the axis of movement of the conveyor. However, in such a device, the speed of the drive arms is limited due to the accelerations when the direction of movement of the arms changes relative to the axis of the conveyor. In addition, such a device comprises a complicated mechanism and this is expensive to maintain due to the mist produced by the spraying and which is deposited.

De plus, dans un tel dispositif , l'orientation des pistolets est également fixe par rapport au bras d'entraînement , comme cité précédemment dans le dispositif rotatif , ce qui exclu toute possibilité de communiquer au pisto­let une variation d'orientation par rapport à son bras d'entraînement correspondant, à un instant donné , en fonction d'un contour particulier du corps à colorer ou à traiter .In addition, in such a device, the orientation of the guns is also fixed relative to the drive arm, as mentioned above in the rotary device, which excludes any possibility of communicating to the gun a variation of orientation relative to its corresponding training arm, at a given instant, as a function of a particular contour of the body to be colored or treated.

Le but de la présente invention est de remédier à ces inconvénients et concerne à cet effet un procédé d'application par pulvérisation d'un produit de coloration ou de traitement de corps déplacés linéairement par un transporteur plan, à partir d'au moins un pistolet, entraîné par un organe mobile suivant une trajectoire fer­mée, dont la projection géométrique sur le plan du transporteur coupe un axe de déplacement dudit transporteur successivement en amont et en aval, dans des sens opposés , chacun des pistolets étant incliné simultanément d'un premier angle par rapport au plan du transporteur, d'un deuxié­me angle par rapport à l'axe de déplacement dudit transporteur et d'un troisième angle par rapport à l'axe de pulvérisation du pistolet, caractérisé en ce que l'orientation du pistolet est modifiable par variation de l'un au moins de ses trois angles indépendamment de l'organe mobi­le correspondant.The object of the present invention is to remedy these drawbacks and for this purpose relates to a method of application by spraying a coloring product or a treatment of bodies displaced linearly by a flat conveyor, from at least one gun , driven by a movable member along a closed path, the geometric projection of which on the plane of the conveyor intersects an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun, characterized in that the orientation of the gun is modifiable by variation of at least one of its three angles independently of the corresponding movable member.

Pour la mise en oeuvre de ce procé­dé, une autre caractéristique de l'invention concerne un dispositif comprenant au moins un pistolet entraîné par un organe mobile constitué par un bras d'entraînement d'un manège tournant, par l'intermédiaire d'un arbre support sur lequel il est fixé suivant une orientation donnée par lesdits premier , deuxième et troisième angles, caractérisé en ce qu'il comporte des moyens de commande de l'orientation du pistolet de manière à modifier au moins l'un de ses angles , indépendamment du bras d'entraînement.For the implementation of this method, another characteristic of the invention relates to a device comprising at least one gun driven by a movable member constituted by a drive arm of a rotating carousel, by means of a shaft support on which it is fixed in an orientation given by said first, second and third angles, characterized in that it comprises means for controlling the orientation of the gun so as to modify at least one of its angles, independently of the drive arm.

Ainsi, l'orientation du pistolet par rapport à l'organe d'entraînement pourra être variable in­dépendamment de ce dernier, offrant ainsi toute possibilité d'orientation du pistolet par rapport à l'axe de déplacement du transporteur , au plan du transporteur et à l'axe de pulvérisation du pisto­let .Thus, the orientation of the gun relative to the drive member can be variable independently of the latter, thus offering any possibility of orientation of the gun relative to the axis of movement of the conveyor, the plane of the conveyor and the spray axis of the gun.

La présente invention concerne également les caractéristiques ci-après , considérées isolément ou selon toutes leurs combinaisons techniquement possibles:The present invention also relates to the following characteristics, considered in isolation or in all their technically possible combinations:

Selon une caractéristique de l'invention, le dispositif comporte des moyens de commande de l'orientation du pistolet a gissant sur ledit pis­tolet pour modifier ledit premier angle .According to a characteristic of the invention, the device comprises means for controlling the orientation of the pistol sliding on said pistol to modify said first angle.

Selon un mode de réalisation de l'invention, lesdits moyens de commande de l'orientation du pistolet sont constitués par un doigt solidaire de l'arbre support et dont l'extrémité libre est en contact avec une piste fixe en forme de rampe et dont le profil, variable dans un plan perpendiculaire à celui de transpor­teur, est apte à agir, par des moyens appropriés, sur le pistolet pour modifier le premier angle.According to one embodiment of the invention, said means for controlling the orientation of the gun consist of a finger secured to the support shaft and the free end of which is in contact with a fixed track in the form of a ramp and of which the profile, which is variable in a plane perpendicular to that of the conveyor, is capable of acting, by appropriate means, on the gun to modify the first angle.

Selon une autre caractéristique de l'invention , les moyens de commande de l'orientation du pistolet agissent sur l'arbre support, par action rotative sur lui-même, pour modifier le deuxième angle.According to another characteristic of the invention, the means for controlling the orientation of the gun act on the support shaft, by rotary action on itself, to modify the second angle.

Selon un mode de réalisation particulier de l'invention, les moyens de commande de l'orientation du pistolet sont constitués par un doigt suiveur solidaire d'un arbre support dont l'extrémité libre est en contact avec une piste fixe en forme de rampe dont le profil, variable dans le plan du transporteur , est apte à faire tourner ledit arbre support sur lui-même, pour mo­difier le deuxième angle , en fonction de l'orientation du pistolet .According to a particular embodiment of the invention, the means for controlling the orientation of the gun consist of a follower finger secured to a support shaft whose free end is in contact with a fixed track in the form of a ramp, the profile, variable in the plane of the conveyor, is capable of rotating said support shaft on itself, to modify the second angle, depending on the orientation of the gun.

Selon un mode de réalisation de l'invention le doigt suiveur comporte à son extrémité libre, en contact avec la piste fixe, un galet rotatif.According to one embodiment of the invention, the follower finger has at its free end, in contact with the fixed track, a rotary roller.

Selon une autre caractéristique de l'invention, l'arbre support est monté sur le bras d'entraînement par l'intermédiaire d'au moins un palier dans lequel il tourillonne sous l'influence du doigt suiveur.According to another characteristic of the invention, the support shaft is mounted on the drive arm by means of at least one bearing in which it pivots under the influence of the follower finger.

Selon une autre caractéristique de l'invention, un système de rappel est interposé entre l'arbre support et le bras d'entraînement , afin de rappeler élastiquement le doigt suiveur contre la piste fixe .According to another characteristic of the invention, a return system is interposed between the support shaft and the drive arm, in order to resiliently return the follower finger against the fixed track.

Selon une variante de réalisation de l'invention, l'arbre support tourillonne sur deux paliers disposés sur une embase sensiblement per­pendiculaire au bras d'entraînement et entre les­quels paliers est positionné le doigt suiveur solidaire dudit arbre support.According to an alternative embodiment of the invention, the support shaft pivots on two bearings arranged on a base substantially perpendicular to the drive arm and between which bearings is positioned the follower finger integral with said support shaft.

Ceci afin de conférer à l'arbre support un meilleur guidage et une stabilité plus grande.This is to give the support shaft better guidance and greater stability.

Selon un exemple d'application particulier de l'invention , le manège tournant s'inscrit dans un cercle, sur au moins un rayon duquel, est dis­posé un bras d'entraînement en rotation, d'un pistolet.According to an example of a particular application of the invention, the rotating roundabout is part of a circle, on at least one radius of which is arranged a rotation drive arm of a pistol.

Un manège rotatif a l'avantage d'être de conception plus simple, mais l'invention n'y est pas limitée.A rotary carousel has the advantage of being simpler in design, but the invention is not limited thereto.

Selon une caractéristique de l'invention, le profil de la piste fixe reproduit par le doigt suiveur solidaire de l'arbre support de pistolet, est apte à conférer audit arbre support, une ro­tation sur lui-même , telle à maintenir une va­leur constante de son deuxième angle par rapport à l'axe de déplacement du transporteur, pendant au moins une première partie utile de sa trajectoire curviligne correspondant à la largeur du transpor­teur.According to a characteristic of the invention, the profile of the fixed track reproduced by the follower finger integral with the pistol support shaft, is capable of imparting to said support shaft, a rotation on itself, such as to maintain a constant value of its second angle relative to the axis of movement of the conveyor, during at least a first useful part of its curvilinear trajectory corresponding to the width of the conveyor.

Selon une caractéristique de l'invention, la largeur de la piste fixe mesurée perpendiculaire­ment à l'axe du transporteur est supérieure à la largeur de celui-ci , de façon à déterminer deux zones mortes situées latéralement de part et d'autre dudit transporteur et en ce que le profil de la piste fixe au droit des zones mortes est tel qu'il modifie le deuxième angle d'un pistolet de manière à donner à ce dernier, sur une seconde partie utile de sa trajectoire curviligne, corres­pondant à la largeur du transporteur, une orien­tation par rapport à l'axe de déplacement du transporteur, qui est parallèle mais de sens op­posé à celle de ce même pistolet dans ladite pre­mière partie utile de sa trajectoire curviligne.According to a characteristic of the invention, the width of the fixed track measured perpendicular to the axis of the conveyor is greater than the width of the latter, so as to determine two dead zones located laterally on the side and other side of said transporter and in that the profile of the fixed track at the dead zones is such that it modifies the second angle of a pistol so as to give the latter, over a second useful part of its curvilinear trajectory , corresponding to the width of the conveyor, an orientation relative to the axis of movement of the conveyor, which is parallel but opposite in direction to that of this same pistol in said first useful part of its curvilinear trajectory.

On comprend que le manège rotatif peut tourner à l'intérieur comme à l'extérieur de la piste fixe en forme de rampe.It is understood that the rotary carousel can rotate inside and outside the fixed track in the form of a ramp.

Selon une autre caractéristique de l'invention, le dispositif comprend des moyens de commande qui sont associés à au moins un pistolet, ces moyens pouvant faire varier le troisième angle dudit pistolet.According to another characteristic of the invention, the device comprises control means which are associated with at least one gun, these means being able to vary the third angle of said gun.

Selon une caractéristique additionnelle de l'invention, des moyens de commande sont associés à au moins un arbre support pour faire varier sa position selon un axe vertical et son angle par rapport audit axe vertical.According to an additional characteristic of the invention, control means are associated with at least one support shaft to vary its position along a vertical axis and its angle relative to said vertical axis.

Selon une caractéristique de l'invention, des moyens de commande sont associés à au moins un pistolet pour faire varier le grammage en fonc­tion de la géométrie de la pièce à pulvériser .According to a characteristic of the invention, control means are associated with at least one gun for varying the grammage as a function of the geometry of the part to be sprayed.

Selon une autre caractéristique de l'invention, le dispositif comprend des moyens de commande par asservissement du système d'orientation des pistolets, en automatique et en continu .According to another characteristic of the invention, the device comprises control means by automatic control of the gun orientation system, automatically and continuously.

Bien entendu l'homme du métier comprendra que l'invention est applicable à tout type de manège tournant et que la variation de l'orientation du pistolet peut être obtenue par tous autres moyens de commande mécaniques, électriques ou autres, in­dépendants pour chaque bras et permettant d obtenir les avantages d'une pulvérisation ma­nuelle suivant le contour des pièces à des vites­ses de dispositifs automatisés.Of course the skilled person will understand that the invention is applicable to any type of ride rotating and that the variation of the orientation of the gun can be obtained by any other mechanical, electrical or other control means, independent for each arm and making it possible to obtain the advantages of manual spraying according to the contour of the parts at speeds of automated devices.

L'invention sera encore illustrée sans être aucunement limitée par la description qui suit, faite en regard des dessins annexés sur lesquels:

  • Fig.1 est une vue en perspective avec des arrachements partiels d'une cabine de pistolage constituant un exemple connu dans l'état de la technique.
  • Fig.2 est une vue schématique d'un manège ro­tatif d'un dispositif d'application par pulvéri­sation d'un produit suivant un exemple de réalisation de l'invention, montrant les varia­tions angulaires d'un pistolet par rapport à son bras d'entraînement, au cours d'une révolution afin de lui assurer une orientation constante;
  • Fig.3 est une vue en coupe partielle suivant la ligne cassée II-II du dispositif selon la fi­gure 2.
The invention will be further illustrated without being in any way limited by the description which follows, given with reference to the appended drawings in which:
  • Fig.1 is a perspective view with partial cutaway of a spray booth constituting an example known in the prior art.
  • Fig.2 is a schematic view of a rotary carousel of a device for spraying a product according to an exemplary embodiment of the invention, showing the angular variations of a gun relative to its arm training, during a revolution to ensure constant orientation;
  • Fig.3 is a partial sectional view along the broken line II-II of the device according to Figure 2.

Selon un exemple de réalisation connue dans l'état de la technique, la cabine de pistolage 1 désignée dans son ensemble est destinée à l'application de peintures, laques, vernis et produits de traitement par pulvérisation sur des surfaces planes profilées et simultanément sur ses chants, que nous appellerons ici , panneaux 2.According to an exemplary embodiment known in the prior art, the spray booth 1 designated as a whole is intended for the application of paints, lacquers, varnishes and spray treatment products on profiled flat surfaces and simultaneously on its songs, which we will call here, panels 2.

Les panneaux à traiter sont déposés à l'entrée de la cabine 1 sur un transporteur plan à feuillards 3 ,à déplacement linéaire et véhi­ culés par celui-ci , à une vitesse contrôlée. Les feuillards du transporteur sont entraînés par des poulies 4 et sont constitués par des lames d'acier nettoyées à chaque tour par un double dispositif de nettoyage, l'un non visible à la sortie de la cabine et l'autre 5 à l'entrée. Ces dispositifs sont constitués globalement de râ­cleurs de brosses en laiton trempant dans un sol­vant et de feutres . De cette manière, après chaque passage en cabine 1, les lames d'acier sont parfaitement nettoyées avant de revenir à l'entrée de la cabine .The panels to be treated are deposited at the entrance to cabin 1 on a flat strip conveyor 3, with linear movement and vehicle butted by it, at a controlled speed. The conveyor belts are driven by pulleys 4 and are constituted by steel blades cleaned at each turn by a double cleaning device, one not visible at the exit of the cabin and the other 5 at the entrance. . These devices generally consist of scrapers of brass brushes dipping in a solvent and of felts. In this way, after each passage in cabin 1, the steel blades are perfectly cleaned before returning to the entrance to the cabin.

Un compteur d'impulsions 6 monté sur un arbre de guidage 7 des feuillards, indique la vitesse d'avance et transmet l'information à un dispositif économiseur de produit qui règle la pulvérisation à partir d'un manège rotatif 8 en fonction de sa vitesse.A pulse counter 6 mounted on a guide shaft 7 of the strips, indicates the speed of advance and transmits the information to a product saving device which regulates the spraying from a rotary carousel 8 as a function of its speed .

Le dispositif économiseur non représenté de produit sert à déclencher la pulvérisation uniquement sur les surfaces pleines des panneaux qui défilent sur le transporteur 3. Il en résulte un double avantage; une économie de produit ; une quantité moindre de matières à filtrer avant éva­cuation de l'air ambiant à l'extérieur.The product not shown economizer device is used to trigger the spraying only on the solid surfaces of the panels which pass on the conveyor 3. This results in a double advantage; product economy; less material to filter before evacuating the ambient air outside.

Le dispositif économiseur comprend les or­ganes essentiels suivant,visibles partiellement, un pont de détection 10 à l'entrée de la cabine 1, situé d'un côté du transporteur 3 et frappé par un rayon lumineux émanant d'une source 11 si­tuée de l'autre côté du transporteur; un comp­teur de vitesse d'avance; un compteur de vitesse de rotation d'un rotor du manège; une unité de commande électronique réglable .The economizer comprises the following essential organs, partially visible, a detection bridge 10 at the entrance to the cabin 1, located on one side of the transporter 3 and struck by a light beam emanating from a source 11 located from the other side of the carrier; an advance speedometer; a rotation speedometer of a rotor of the merry-go-round; an adjustable electronic control unit.

Le fonctionnement d'un tel dispositif éco­nomiseur est le suivant :The operation of such an economizer device is as follows:

Un corps ou panneau 2 à traiter, passe sur le pont de détection 10. Celui-ci enregistre l'image du panneau . L'image est transmise à une mémoire électronique et avance dans cette mémoire à la même vitesse que le panneau 2 sur le trans­porteur 3 grâce au compteur de vitesse d'avance.A body or panel 2 to be treated passes over the detection bridge 10. The latter records the image of the panel. The image is transmitted to an electronic memory and advances in this memory at the same speed as the panel 2 on the conveyor 3 thanks to the advance speed counter.

Un autre dispositif de synchronisation lié au système mécanique d'entraînement du manège 8 enregistre la position et la vitesse des pisto­lets 12 qui y sont fixés. Lorsque le panneau 2 arrive sous les pistolets 12, la mémoire donne l'ordre à ceux-ci de s'ouvrir et de se fermer en fonction de la forme et des informations reçues par les synchronisateurs .Another synchronization device linked to the mechanical drive system of the merry-go-round 8 records the position and the speed of the pistols 12 which are attached to it. When the panel 2 arrives under the pistols 12, the memory orders them to open and close according to the shape and the information received by the synchronizers.

L'ouverture et la fermeture des pistolets 12 sont réalisées par une électrovanne 13.The pistols 12 are opened and closed by a solenoid valve 13.

Le dispositif de pulvérisation proprement dit, comprend donc le manège rotatif 8 et l'appareillage de pulvérisation . Ce dernier est essentiellement composé des pistolets 12 action­nés par des électrovannes 13 commandés par l'économiseur et réglés suivant des paramètres tels que: pression d'air de pulvérisation, pression de produit , débit de produit , largeur de jet , position des pistolets en hauteur et en inclinaison par rapport à la surface à traiter.The actual spraying device therefore includes the rotary carousel 8 and the spraying apparatus. The latter is essentially composed of the pistols 12 actuated by solenoid valves 13 controlled by the economizer and adjusted according to parameters such as: spraying air pressure, product pressure, product flow rate, jet width, position of the guns in height and in inclination relative to the surface to be treated.

Chaque pistolet projette un jet dont la section est en général sensiblement ovale et qui présente un angle pouvant varier de ± 90° par rapport à l'axe de pulvérisation du pistolet.Each gun projects a jet whose section is generally substantially oval and which has an angle which can vary by ± 90 ° with respect to the spraying axis of the gun.

En ce qui concerne le manège rotatif 8, celui-ci est composé d'une pluralité d'organes mobiles radiaux ou bras d'entraînement 14, en l'occurrence au nombre de huit, entraînant en ro­tation un ou deux pistolets 12 par bras 14 sui­ vant une trajectoire circulaire fermée, par l'intermédiaire de l'arbre support 15 sur lequel ils sont fixés.Regarding the rotary carousel 8, it is composed of a plurality of movable radial members or drive arm 14, in this case eight in number, driving in rotation one or two guns 12 per arm 14 so vant a closed circular path, by means of the support shaft 15 on which they are fixed.

La projection géométrique de la trajectoire circulaire sur le plan du transporteur 3 coupe l'axe de déplacement F de celui-ci , successive­ment en amont et en aval, dans des sens opposés, chacun des pistolets 12 étant incliné simultané­ment d'un premier angle par rapport au plan du transporteur 3 , d'un deuxième angle par rapport à l'axe de déplacement F dudit transporteur 3 et d'un troisième angle par rapport à l'axe de pulvérisation dudit pistolet, ces trois angles définissant l'orientation globale des pistolets 12 en mouvement rotatif selon le sens R du manège 8 .The geometric projection of the circular path on the plane of the conveyor 3 intersects the axis of movement F thereof, successively upstream and downstream, in opposite directions, each of the guns 12 being inclined simultaneously by a first angle by relative to the plane of the conveyor 3, a second angle relative to the axis of movement F of said conveyor 3 and a third angle relative to the axis of spraying of said gun, these three angles defining the overall orientation of the pistols 12 in rotary movement in the direction R of the armory 8.

L'alimentation des pistolets 12 , en courant électrique, air comprimé et produit se fait par collecteur et joints tournants qui ne seront pas décrits ici . Le manège 8 est entraîné par un mo­to variateur 16 dont la vitesse de rotation est réglée en fonction de la vitesse d'avance du transporteur et de la largeur du jet des pisto­lets 12.The guns 12, with electric current, compressed air and product, are supplied by manifold and rotary joints which will not be described here. The merry-go-round 8 is driven by a motor variator 16, the speed of rotation of which is adjusted as a function of the speed of advance of the transporter and the width of the jet of the pistols 12.

Enfin, un dispositif d'aspiration et de fil­tration 17 est placé à l'intérieur de la cabine 1, ventilée, verticalement.Finally, a suction and filtration device 17 is placed inside the cabin 1, ventilated, vertically.

L'air est extrait à la base de la cabine par deux conduits (non visibles) aboutissant sur le dessus à deux filtres et un ventilateur .The air is extracted at the base of the cabin by two ducts (not visible) leading on the top to two filters and a fan.

L'air filtré est évacué à l'extérieur par une cheminée .The filtered air is exhausted outside by a chimney.

L'introduction de l'air dans la cabine se fait soit par un sommet ouvert de la cabine soit par l'intermédiaire d'un plafond filtrant dans le cas des cabines pressurisées.Air is introduced into the cabin either through an open top of the cabin or via a filtering ceiling in the case of pressurized cabins.

L'air circule verticalement dans le sens de la pulvérisation des pistolets 12.The air circulates vertically in the direction of spraying of the guns 12.

Les surfaces les plus susceptibles d'être atteintes par le brouillard produit par la pulvé­risation sont recouvertes d'eau. Un rideau d'eau 18 à fort débit forme deux écrans d'eau que l'air aspiré doit obligatoirement traverser en y lais­sant une bonne partie des déchets de la pulvérisation. Les deux écrans d'eau sont alimen­tés par une pompe à fort débit entraîne par un moteur.The surfaces most likely to be affected by the spray mist are covered with water. A curtain of high-flow water 18 forms two screens of water that the sucked air must pass through, leaving a good part of the spray waste therein. The two water screens are supplied by a high flow pump driven by a motor.

Selon la caractéristique principale du pro­cédé de l'invention, l'orientation des pistolets 12 est modifiable par variation de l'une au moins de ses trois angles α₁, α₂, et α₃, indépendam­ment de l'organe mobile ou bras d'entraînement 14.According to the main characteristic of the process of the invention, the orientation of the guns 12 can be modified by variation of at least one of its three angles α₁, α₂, and α₃, independently of the movable member or drive arm 14 .

Selon le dispositif d'application (fig.2) pour la mise en oeuvre de ce procédé, des moyens de com­mande 19 de l'orientation des pistolets 12 agissent sur chacun de leur propre arbre support 15 dont ils sont solidaires de manière à modifier l'angle α₂ , indépendamment des bras d'entraînement 14. Dans l'exemple de réalisation de l'invention qui va être décrit, les moyens de commande 19 de l'orientation de chaque pistolet 12 agissent sur l'arbre support 15, par action rotative sur lui-même dans le but de modifier le deuxième angle α₂, c'est-à-dire l'angle du pistolet 12 par rap­port à l'axe de déplacement F du transporteur 3.According to the application device (fig. 2) for the implementation of this method, control means 19 for the orientation of the guns 12 act on each of their own support shaft 15 of which they are integral so as to modify the angle α₂, independently of the drive arms 14. In the embodiment of the invention which will be described, the control means 19 for the orientation of each gun 12 act on the support shaft 15, by action rotatable on itself in order to modify the second angle α₂, that is to say the angle of the gun 12 relative to the axis of movement F of the conveyor 3.

Les moyens de commande 19 de l'orientation du pistolet 12 sont constitués par un doigt suiveur 20 , solidaire de l'arbre support 15, et dont l'extrémité libre est munie d'un galet rotatif 21 en contact avec une piste fixe 22 en forme de rampe à l'intérieur de laquelle tourne le manège rotatif 8 s'inscrivant dans un cercle. Bien entendu selon une variante de réalisation, la rampe 22 pourra être disposée à l'intérieur dudit manège rotatif 8. Le profil prédéterminé de ladite rampe 22 est va­riable dans le plan du transporteur et apte à faire tourner le bras support 15, autour de son axe selon le sens R₁, pour modifier le deuxième angle α₂ en fonction de l'orientation du pistolet 12 à obtenir .The control means 19 for the orientation of the gun 12 are constituted by a follower finger 20, integral with the support shaft 15, and the free end of which is provided with a rotary roller 21 in contact with a fixed track 22 in the form of a ramp inside which rotates the rotary carousel 8 which forms part of a circle. Of course according to an alternative embodiment, the ramp 22 may be disposed inside said rotary carousel 8. The predetermined profile of said ramp 22 is variable in the plane of the conveyor and able to rotate the support arm 15, around its axis in the direction R₁, to modify the second angle α₂ according to the orientation of the gun 12 to be obtained.

Dans le présent exemple, l'angle α₂ du pis­tolet 12 formé avec l'axe de déplacement F du transporteur 3 est constant pendant une première partie utile L₁ de la trajectoire curviligne dudit pistolet au-dessus du transporteur 3 sur lequel sont disposés pour entraînement les panneaux 2. Il est évident que l'angle α₂ peut être aussi modi­fié à un quelconque point de la trajectoire, par une modification d'une zone correspondante de la rampe 22. En fait, de tels moyens permettent une maitrise totale de l'orientation du pistolet, non influencée par la rotation du manège 8.In the present example, the angle α₂ of the pistol 12 formed with the axis of movement F of the conveyor 3 is constant during a first useful part L₁ of the curvilinear trajectory of said pistol above the conveyor 3 on which the panels 2. It is obvious that the angle α₂ can also be modified at any point of the trajectory, by a modification of a corresponding zone of the ramp 22. In fact, such means allow a total control of the orientation of the pistol, not influenced by the rotation of the armory 8.

Dans un tel cas de figure , l'arbre support 15 est monté sur le bras d'entraînement 14 par l'intermédiaire de deux paliers 23 dans lequel il tourillonne sous l'influence du doigt suiveur 20, lui-même entraîné en variation angulaire en fonc­tion du profil de la rampe 22. Les deux paliers 23 sont disposés sur une embase 24 perpendiculaire au bras d'entraînement 14 sur lequel elle est fixée, paliers 23 entre lesquels est positionné ledit doigt suiveur 20 solidaire de l'arbre support 15.In such a scenario, the support shaft 15 is mounted on the drive arm 14 by means of two bearings 23 in which it pivots under the influence of the follower finger 20, itself driven in angular variation in function of the profile of the ramp 22. The two bearings 23 are arranged on a base 24 perpendicular to the drive arm 14 on which it is fixed, bearings 23 between which is positioned said follower finger 20 integral with the support shaft 15.

De manière à rappeler élastiquement de manière permanente le doigt suiveur 20 contre la piste fixe 22, un système de rappel tel qu'un res­sort de rappel 29 , ou tout autre dispositif équi­valent est interposé entre l'arbre support 15 et le bras d'entraînement 14.So as to permanently resiliently return the follower finger 20 against the fixed track 22, a return system such as a return spring 29, or any other equivalent device is interposed between the support shaft 15 and the drive arm 14.

La largeur L₂ de la piste fixe 22 en forme de rampe, mesurée perpendiculairement à l'axe longitu­dinal XX′ du transporteur 3 qui se confond avec un axe du manège 8 , est supérieure à la largeur dudit transporteur 3. Ainsi , des parties excentriques 27,28 de la rampe 22 sont obtenues symétriquement par rapport à l'axe XX′ et déterminent par rapport à la largeur du transporteur 3 deux zones mortes 25 et 26 latérales.The width L₂ of the fixed track 22 in the form of a ramp, measured perpendicular to the longitudinal axis XX ′ of the conveyor 3 which merges with an axis of the merry-go-round 8, is greater than the width of said conveyor 3. Thus, eccentric parts 27 , 28 of the ramp 22 are obtained symmetrically with respect to the axis XX ′ and determine, relative to the width of the conveyor 3, two lateral dead zones 25 and 26.

Les parties excentriques 27,28 sont telles à modifier , sur le parcours correspondant du pisto­let 12, le deuxième angle α₂ de ce dernier. Ceci, afin que le pistolet 12, après avoir traversé une première partie utile L1 du transporteur 3 en aval , aborde une seconde partie utile L1′ du transporteur 3 en amont, après avoir subi une variation d'orientation par rapport à l'axe de dé­placement F dudit transporteur, au passage de la partie excentrique 27. Cette variation est telle à obtenir une projection de produit, pa­rallèle mais de sens opposé à celle obtenue par ce même pistolet 12 lorsqu'il était situé symétrique­ment dans la première partie utile L1 de sa tra­jectoire curviligne.The eccentric parts 27, 28 are such as to modify, on the corresponding path of the gun 12, the second angle α₂ of the latter. This is so that the gun 12, after having passed through a first useful part L1 of the conveyor 3 downstream, approaches a second useful part L1 ′ of the conveyor 3 upstream, after having undergone a variation in orientation relative to the axis of displacement F of said conveyor, on passing the eccentric part 27. This variation is such as to obtain a projection of product, parallel but in opposite direction to that obtained by this same gun 12 when it was located symmetrically in the first useful part L1 of its curvilinear trajectory.

Après avoir traversé la seconde partie utile L1′ selon un angle α₂ également constant par rap­port à l'axe de déplacement F, le pistolet 12 re­prend son orientation initiale au passage de la partie concentrique 28 de la rampe 22, pour un nouveau cycle de rotation du manège 8.After having crossed the second useful part L1 ′ at an angle α₂ also constant with respect to the axis of movement F, the gun 12 returns to its initial orientation when the concentric part 28 of the ramp 22 passes, for a new rotation cycle ride 8.

Dans l'exemple qui vient d'être décrit, la piste 22 est dans un plan horizontal et l'angle α₁ des pistolets par rapport au plan du transporteur est fixe .In the example which has just been described, the track 22 is in a horizontal plane and the angle α₁ of the pistols relative to the plane of the conveyor is fixed.

On comprend qu'une variation de l'angle α1 peut être obtenue en modifiant la piste 22 pour qu'elle présente un profil variable par rapport au plan du transporteur, ce profil étant déterminé de façon appropriée. On peut par exemple prévoir, pour un pistolet donné, un deuxième doigt , solidaire de l'arbre support 15 et dont l'extrémité libre est aussi en contact avec la piste fixe 22 en forme de rampe. Comme indiqué, cette piste présente des va­riations dans un plan perpendiculaire au plan du transporteur , c'est-à-dire dans un plan sensible­ment vertical. Le doigt suit l'évolution de la pis­te dans ce plan sensiblement vertical et la transmet, par des moyens appropriés, au pistolet de façon à modifier en conséquence l'angle α1. Ces moyens sont à la portée de l'homme de l'art et ne sont pas représentés sur les figures . La variation de l'angle α1 est ici encore indépendante des bras d'entraînement 14 des pistolets 12.It is understood that a variation of the angle α1 can be obtained by modifying the track 22 so that it has a variable profile with respect to the plane of the conveyor, this profile being determined in an appropriate manner. One can for example provide, for a given gun, a second finger, integral with the support shaft 15 and whose free end is also in contact with the fixed track 22 in the form of a ramp. As indicated, this track has variations in a plane perpendicular to the plane of the conveyor, that is to say in a substantially vertical plane. The finger follows the evolution of the track in this substantially vertical plane and transmits it, by appropriate means, to the pistol so as to modify the angle α1 accordingly. These means are within the reach of those skilled in the art and are not shown in the figures. The variation of the angle α1 is here again independent of the drive arms 14 of the pistols 12.

Dans la description qui précède, la variation du premier et/ou du deuxième angle(s) est obtenue grâce à une piste en forme de rampe . Cette piste peut bien sûr être remplacée par tous moyens équivalents (cames, engrenages ...).In the above description, the variation of the first and / or second angle (s) is obtained by means of a ramp-shaped track. This track can of course be replaced by any equivalent means (cams, gears, etc.).

On comprend également qu'une modification de l'angle α3 de chaque pistolet par rapport à son axe de pulvérisation peut être obtenue, à tout moment, par des moyens de commande appropriés , associés audit pistolet, et ceci, indépendamment des bras d'entraînement 14.It is also understood that a modification of the angle α3 of each gun with respect to its spray axis can be obtained, at any time, by appropriate control means, associated with said gun, and this, independently of the drive arms. 14.

Dans la description qui précède, on a consi­déré que les arbres support 15 des pistolets res­taient sensiblement verticaux et perpendiculaires au plan du transporteur .In the foregoing description, it has been considered that the support shafts 15 of the guns remain substantially vertical and perpendicular to the plane of the conveyor.

On peut prévoir des moyens additionnels per­mettant de commander la position d'un arbre sup­port selon un axe vertical et/ou l'angle de cet arbre support par rapport audit axe vertical. Ces moyens ne sont pas représentés sur les figures .Additional means can be provided for controlling the position of a support shaft along a vertical axis and / or the angle of this support shaft relative to said vertical axis. These means are not shown in the figures.

Ces moyens additionnels sont intéressants car ils permettent d'obtenir une section constante du jet de pulvérisation quelle que soit l'orientation du pistolet correspondant et/ou un parcours de l'axe médian du jet (axe de pulvérisation) constant sur le transporteur .These additional means are advantageous because they make it possible to obtain a constant section of the spray jet regardless of the orientation of the corresponding gun and / or a constant travel of the median axis of the spray (spray axis) on the conveyor.

En effet, on comprend qu'une modification du premier et/ou du deuxième angle (α1,α2) d'un pisto­let donné entraîne une modification de la section du jet de pulvérisation, au niveau de la pièce à pul­vériser .In fact, it is understood that a modification of the first and / or of the second angle (α1, α2) of a given gun results in a modification of the section of the spray jet, at the level of the part to be sprayed.

Or, la qualité de la pulvérisation est meilleu­re si la section du jet de pulvérisation, au niveau de la pièce, est constante . On peut alors agir sur l'arbre support pour obtenir une section constante.However, the quality of the spray is better if the section of the spray jet, at the level of the part, is constant. We can then act on the support shaft to obtain a constant section.

Il peut également être intéressant de prévoir des moyens permettant de faire varier le grammage en fonction de la géométrie de la pièce à pulvériser.It may also be advantageous to provide means making it possible to vary the grammage as a function of the geometry of the part to be sprayed.

En effet, un grammage plus important sur une surface déterminée peut être rendu nécessaire par la complexité d'un relief particulier sur la pièce à couvrir ou par un coefficient d'absorption du pro­duit non homogène.Indeed, a heavier grammage on a determined surface can be made necessary by the complexity of a particular relief on the part to be covered or by an absorption coefficient of the non-homogeneous product.

Il peut être obtenu par un temps de pulvérisa­tion plus important sur la zone concernée ou par une commande à distance du débit du pistolet en regard de cette surface.It can be obtained by a longer spraying time on the zone concerned or by a remote control of the flow rate of the gun opposite this surface.

Enfin, on peut également prévoir des moyens de commande par asservissement du système d'orientation des pistolets , en automatique et en continu.Finally, it is also possible to provide control means by automatic control of the gun orientation system, automatically and continuously.

A cet effet, on place à l'entrée de la cabine de pulvérisation, un capteur travaillant en continu, enregistrant les caractéristiques tridimen­sionnelles des pièces à recouvrir . Un exemple de ce capteur peut être constitué par un plan laser ayant une incidence de 45° (ou autre) par rapport au plan de convoyage et une caméra matricielle munie d'un filtre et observant le profil d'intersection avec les panneaux à 90° , par rapport au plan laser. Ces dif­férents moyens ne sont pas représentés sur les figu­res .To this end, a sensor working continuously is placed at the entrance to the spray booth, recording the three-dimensional characteristics of the parts to be covered. An example of this sensor can be constituted by a laser plane having an incidence of 45 ° (or other) relative to the conveying plane and a matrix camera provided with a filter and observing the profile of intersection with the panels at 90 ° , with respect to the laser plane. These different means are not shown in the figures.

Les signes de référence insérés après les caractéristiques techniques mentionnées dans les re­vendications, ont pour seul but de faciliter la com­préhension de ces dernières, et n'en limitent aucunement la portée.The reference signs inserted after the technical characteristics mentioned in the claims, have the sole purpose of facilitating the understanding of the latter, and in no way limit their scope.

Claims (19)

1.Procédé d'application par pulvérisation d'un produit de coloration ou de traitement de corps (2) déplacés linéairement par un transporteur plan, à partir d'au moins un pistolet (12) en­traîné par un organe mobile (14) suivant une tra­jectoire fermée, dont la projection géométrique sur le plan du transporteur (3) coupe un axe de déplacement (F) dudit transporteur (3) , succes­sivement en amont et en aval, dans des sens oppo­sés, chacun des pistolets (12) étant incliné simultanément d'un premier angle α₁, par rapport au plan du transporteur (3) d'un deuxième angle α₂ par rapport à l'axe de déplacement (F) dudit transporteur (3), et d'un troisième angle α₃ par rapport à l'axe de pulvérisation du pistolet, caractérisé en ce que l'orientation du pistolet (12) est modifiable par variation de l'un au moins de ses trois angles (α₁,α₂,α₃) indé­pendamment de l'organe mobile correspondant (14).1. Method for applying by spraying a coloring or treatment product to bodies (2) displaced linearly by a flat conveyor, from at least one gun (12) driven by a movable member (14) according to a closed trajectory, the geometric projection of which on the plane of the conveyor (3) intersects an axis of movement (F) of said conveyor (3), successively upstream and downstream, in opposite directions, each of the pistols (12) being inclined simultaneously of a first angle α₁, relative to the plane of the conveyor (3) of a second angle α₂ relative to the axis of displacement (F) of said conveyor (3), and of a third angle α₃ relative to l spray gun axis, characterized in that the orientation of the gun (12) can be modified by variation of at least one of its three angles (α₁, α₂, α₃) independently of the corresponding movable member (14) . 2.Dispositif d'application par pulvérisation d'un produit de coloration ou de traitement de corps, pour la mise en oeuvre du procédé selon la revendication 1, comprenant au moins un pistolet (12) entraîné par un organe mobile constitué par un bras d'entraînement (14) d'un manège tournant (8), par l'intermédiaire d'un arbre support (15) sur lequel il est fixé suivant une orientation donnée par lesdits premier , deuxième et troisiè­me angles (α₁,α₂,α₃), caractérisé en ce qu'il comporte des moyens de commande de l'orientation du pistolet (12) de manière à modifier au moins l'un de ses angles (α₁,α₂,α₃), indépendamment du bras d'entraînement (14).2. device for spraying a coloring or body treatment product, for implementing the method according to claim 1, comprising at least one gun (12) driven by a movable member constituted by an arm of 'drive (14) of a rotating carousel (8), by means of a support shaft (15) on which it is fixed in an orientation given by said first, second and third angles (α₁, α₂, α₂) , characterized in that it comprises means for controlling the orientation of the pistol (12) so as to modify at least one of its angles (α₁, α₂, α₃), independently of the drive arm (14). 3.Dispositif selon la revendication 2, caracté­risé en ce qu'il comporte des moyens de commande de l'orientation du pistolet (12) agissant sur le­dit pistolet pour modifier ledit premier angle d'inclinaison (α₁) .3. Device according to claim 2, characterized in that it comprises means for controlling the orientation of the gun (12) acting on said gun to modify said first angle of inclination (α₁). 4. Dispositif selon l'une des revendications 2 ou 3, caractérisé en ce que lesdits moyens de commande de l'orientation du pistolet (12) sont constitués par un doigt solidaire de l'arbre sup­port (15) et dont l'extrémité libre est en contact avec une piste (22) fixe en forme de ram­pe et dont le profil, variable dans un plan per­pendiculaire à celui du transporteur, est apte à agir, par des moyens appropriés, sur le pistolet (12) pour modifier le premier angle (α₁).4. Device according to one of claims 2 or 3, characterized in that said means for controlling the orientation of the gun (12) consist of a finger secured to the support shaft (15) and whose free end is in contact with a fixed track (22) in the form of a ramp and whose profile, variable in a plane perpendicular to that of the conveyor, is capable of acting, by appropriate means, on the gun (12) to modify the first angle (α₁). 5.Dispositif selon l'une des revendications 2 à 4, caractérisé en ce qu'il comporte des moyens de commande (19) de l'orientation du pistolet (12) agissant sur l'arbre support (15), par ac­tion rotative sur lui-même, pour modifier le deuxième angle (α₂).5. Device according to one of claims 2 to 4, characterized in that it comprises control means (19) of the orientation of the gun (12) acting on the support shaft (15), by rotary action on itself, to modify the second angle (α₂). 6.Dispositif selon la revendication 5, caractérisé en ce que les moyens de commande (19) de l'orientation du pistolet (12) sont constitués par un doigt suiveur (20) solidaire d'un arbre support (15) dont l'extrémité libre est en contact avec une piste (22) fixe en forme de rampe dont le profil, variable dans le plan du transporteur, est apte à faire tourner ledit arbre support (15) sur lui-même, pour modifier le deuxième angle α₂, en fonction de l'orientation dù pistolet (12).6. Device according to claim 5, characterized in that the control means (19) of the orientation of the gun (12) consist of a follower finger (20) secured to a support shaft (15) whose end free is in contact with a fixed track (22) in the form of a ramp whose profile, variable in the plane of the conveyor, is capable of rotating said support shaft (15) on itself, to modify the second angle α₂, in depending on the orientation of the pistol (12). 7.Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce que le doigt suiveur (20) comporte à son extrémité libre, en contact avec la piste fixe (22), un galet rotatif (21).7. Device according to one of claims 5 or 6, characterized in that the follower finger (20) has at its free end, in contact with the fixed track (22), a rotary roller (21). 8.Dispositif selon l'une des revendications 5 à 7, caractérisé en ce que l'arbre support (15) est monté sur le bras d'entraînement (14) par l'intermédiaire d'au moins un palier (23) dans lequel il tourillonne sous l'influence du doigt suiveur (20).8. Device according to one of claims 5 to 7, characterized in that the support shaft (15) is mounted on the drive arm (14) by means of at least one bearing (23) in which it pivots under the influence of the follower finger (20). 9.Dispositif selon l'une des revendications 5 à 8, caractérisé en ce qu'un système de rappel (29) est interposé entre l'arbre support (15) et le bras d'entraînement (14) afin de rappeler élastiquement le doigt suiveur (20) contre la piste fixe (22).9. Device according to one of claims 5 to 8, characterized in that a return system (29) is interposed between the support shaft (15) and the drive arm (14) in order to resiliently return the finger follower (20) against the fixed track (22). 10.Dispositif selon l'une des revendications 5 à 9, caractérisé en ce que l'arbre support (15) tourillonne sur deux paliers (23) disposés sur une embase (24) sensiblement perpendiculaire au bras d'entraînement (14) et entre lesquels pa­liers (23) est positionné le doigt suiveur (20) solidaire dudit arbre support (15).10. Device according to one of claims 5 to 9, characterized in that the support shaft (15) pivots on two bearings (23) disposed on a base (24) substantially perpendicular to the drive arm (14) and between which bearings (23) is positioned the follower finger (20) integral with said support shaft (15). 11.Dispositif selon l'une des revendications 5 à 10, caractérisé en ce que le manège tournant (8) s'inscrit dans un cercle, sur au moins un rayon duquel est disposé un bras (14) d'entraînement en rotation, d'un pistolet (12).11.Device according to one of claims 5 to 10, characterized in that the rotating roundabout (8) is part of a circle, on at least one radius of which is arranged an arm (14) for driving in rotation, d '' a pistol (12). 12.Dispositif selon l'une des revendications 5 à 11, caractérisé en ce que le profil de la piste fixe (22) reproduit par le doigt suiveur (20) so­lidaire de l'arbre support (15) de pistolet (12), est apte à conférer audit arbre support (15), une rotation sur lui-même , telle à maintenir une valeur constante de son deuxième angle α₂, par rapport à l'axe de déplace­ment (F) du transporteur, pendant au moins une première partie utile(L1) de sa trajectoire cur­viligne correspondant à la largeur du transpor­teur (3).12. Device according to one of claims 5 to 11, characterized in that the profile of the fixed track (22) reproduced by the follower finger (20) secured to the support shaft (15) of the pistol (12), is able to confer on said support shaft (15), a rotation on itself, such as to maintain a constant value of its second angle α₂, relative to the axis of movement (F) of the transporter, during at least a first useful part (L1) of its curvilinear trajectory corresponding to the width of the transporter (3). 13.Dispositif selon l'une des revendications 5 à 12, caractérisé en ce que la largeur (L2) de la piste fixe (22) mesurée perpendiculairement à l'axe (XX) du transporteur (3) est supérieure à la largeur L1 de celui-ci , de façon à déterminer deux zones mortes (24,25) situées latéralement de part et d'autre dudit transporteur (3) et en ce que le profil de la piste fixe (22) au droit des zones mortes (24, 25) est tel qu'il modifie le deuxième angle α₂ d'un pistolet (12) de manière à donner à ce dernier, sur une seconde partie utile L1′ de sa trajectoire curviligne, correspondant à la largeur du transporteur (3), une orientation par rapport à l'axe de déplacement (F) du transporteur (3), qui est parallèle mais de sens opposé, à celle de ce même pistolet (12) dans ladite première partie utile L1 de sa trajectoire curviligne.13. Device according to one of claims 5 to 12, characterized in that the width (L2) of the fixed track (22) measured perpendicular to the axis (XX) of the conveyor (3) is greater than the width L1 of the latter, so as to determine two dead zones (24,25) situated laterally on either side of said conveyor (3) and in that the profile of the fixed track (22) in line with the dead zones (24, 25) is such that it modifies the second angle α₂ of a pistol (12) so as to give the latter, on a second useful part L1 ′ of its curvilinear trajectory, corresponding to the width of the conveyor (3), a orientation relative to the axis of movement (F) of the conveyor (3), which is parallel but in opposite direction, to that of this same gun (12) in said first useful part L1 of its curvilinear trajectory. 14.Dispositif selon l'une des revendications 2 à 10, caractérisé en ce que le manège (8) tourne à l'intérieur ou à l'extérieur de ladite piste (22).14. Device according to one of claims 2 to 10, characterized in that the armory (8) rotates inside or outside of said track (22). 15. Dispositif selon l'une des revendications 2 à 14 , caractérisé en ce qu'il comporte des moyens de commande , associés à au moins un pistolet (12), lesdits moyens pouvant faire varier le troisième angle (α₃) dudit pistolet.15. Device according to one of claims 2 to 14, characterized in that it comprises control means, associated with at least one gun (12), said means being able to vary the third angle (α₃) of said gun. 16.Dispositif selon l'une des revendications 2 à 15, caractérisé en ce que des moyens de comman­de sont associés à au moins un arbre support (15) pour faire varier sa position selon un axe verti­ cal et son angle par rapport audit axe vertical.16.A device according to one of claims 2 to 15, characterized in that control means are associated with at least one support shaft (15) to vary its position along a vertical axis cal and its angle to said vertical axis. 17.Dispositif selon l'une des revendications 2 à 16, caractérisé en ce que des moyens de comman­de sont associés à au moins un pistolet (12) pour faire varier le grammage en fonction de la géomé­trie de la pièce à pulvériser.17. Device according to one of claims 2 to 16, characterized in that control means are associated with at least one gun (12) to vary the grammage according to the geometry of the part to be sprayed. 18.Dispositif selon l'une des revendications 2 à 17, caractérisé en ce qu'il comprend des moyens de commande par asservissement du système d'orientation des pistolets (12) , en automatique et en continu.18. Device according to one of claims 2 to 17, characterized in that it comprises control means by servo-control of the gun orientation system (12), automatically and continuously. 19.Cabine de pistolage, caractérisée en ce qu'elle comporte un dispositif d'application par pulvérisation d'un produit de coloration ou de traitement de corps selon l'une des revendica­tions 2 à 18.19. Spray gun, characterized in that it comprises a device for applying by spraying a coloring or body treatment product according to one of claims 2 to 18.
EP90402873A 1989-10-13 1990-10-15 Method and device for spray application of product by orientable guns and spray booth for using this device Expired - Lifetime EP0423041B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402873T ATE100357T1 (en) 1989-10-13 1990-10-15 METHOD AND DEVICE FOR SPRAY APPLICATION OF A PRODUCT USING ORIENTABLE GUNS, AND SPRAY BOOTH FOR USE OF SUCH DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913452A FR2653038B1 (en) 1989-10-13 1989-10-13 METHOD AND DEVICE FOR APPLICATION BY SPRAYING OF PRODUCT BY ADJUSTABLE PISTOLS AND PISTOL CABIN FOR IMPLEMENTING SAID DEVICE.
FR8913452 1989-10-13

Publications (2)

Publication Number Publication Date
EP0423041A1 true EP0423041A1 (en) 1991-04-17
EP0423041B1 EP0423041B1 (en) 1994-01-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402873A Expired - Lifetime EP0423041B1 (en) 1989-10-13 1990-10-15 Method and device for spray application of product by orientable guns and spray booth for using this device

Country Status (5)

Country Link
EP (1) EP0423041B1 (en)
AT (1) ATE100357T1 (en)
DE (1) DE69006160T2 (en)
FR (1) FR2653038B1 (en)
WO (1) WO1991005615A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418288A1 (en) * 1994-05-26 1995-11-30 Gema Volstatic Ag Electrostatic spray device
EP1974831A1 (en) * 2007-03-27 2008-10-01 Jesús Francisco Barberan Latorre Machine for applying products using spray guns
ES2334534A1 (en) * 2008-02-22 2010-03-11 Jesus Francisco Barberan Latorre Cycloidal pulverization machine (Machine-translation by Google Translate, not legally binding)
ITVE20110060A1 (en) * 2011-08-24 2013-02-25 Ger Elettronica S R L METHOD OF CALIBRATION OF A ROTATING GUN EQUIPMENT TO SPRAY A LIQUID NEBULIZED ON A LAMINAR OBJECT MOVING, IN PARTICULAR ON A SKIN, AND EQUIPMENT TO IMPLEMENT THE METHOD.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345834A (en) * 1941-10-01 1944-04-04 Howard V Schweitzer Painting machine
US2397482A (en) * 1942-12-24 1946-04-02 A C Lawrence Leather Company Spraying machine
GB1113959A (en) * 1964-12-08 1968-05-15 Ici Australia Ltd Method of distributing a liquid onto a sheet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345834A (en) * 1941-10-01 1944-04-04 Howard V Schweitzer Painting machine
US2397482A (en) * 1942-12-24 1946-04-02 A C Lawrence Leather Company Spraying machine
GB1113959A (en) * 1964-12-08 1968-05-15 Ici Australia Ltd Method of distributing a liquid onto a sheet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418288A1 (en) * 1994-05-26 1995-11-30 Gema Volstatic Ag Electrostatic spray device
EP1974831A1 (en) * 2007-03-27 2008-10-01 Jesús Francisco Barberan Latorre Machine for applying products using spray guns
ES2322927A1 (en) * 2007-03-27 2009-07-01 Jesus Francisco Barberan Latorre Machine for applying products using spray guns
ES2334534A1 (en) * 2008-02-22 2010-03-11 Jesus Francisco Barberan Latorre Cycloidal pulverization machine (Machine-translation by Google Translate, not legally binding)
ITVE20110060A1 (en) * 2011-08-24 2013-02-25 Ger Elettronica S R L METHOD OF CALIBRATION OF A ROTATING GUN EQUIPMENT TO SPRAY A LIQUID NEBULIZED ON A LAMINAR OBJECT MOVING, IN PARTICULAR ON A SKIN, AND EQUIPMENT TO IMPLEMENT THE METHOD.

Also Published As

Publication number Publication date
EP0423041B1 (en) 1994-01-19
FR2653038A1 (en) 1991-04-19
FR2653038B1 (en) 1993-11-05
ATE100357T1 (en) 1994-02-15
WO1991005615A1 (en) 1991-05-02
DE69006160D1 (en) 1994-03-03
DE69006160T2 (en) 1994-08-11

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