EP0666112B1 - Method and Installation for spraying coating product - Google Patents
Method and Installation for spraying coating product Download PDFInfo
- Publication number
- EP0666112B1 EP0666112B1 EP95410006A EP95410006A EP0666112B1 EP 0666112 B1 EP0666112 B1 EP 0666112B1 EP 95410006 A EP95410006 A EP 95410006A EP 95410006 A EP95410006 A EP 95410006A EP 0666112 B1 EP0666112 B1 EP 0666112B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- installation
- spray device
- coating product
- objects
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
- B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
-
- 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
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/60—Ventilation arrangements specially adapted therefor
Definitions
- the invention relates to a method and an installation for spraying coating product onto objects carried by a conveyor, such as for example bodies of motor vehicles.
- the bodies are moved by a conveyor and the installation is made up of several projection machines, said to be lateral, intended to coat the sides of the bodywork and of a machine, called a roof machine, comprising two gantries supporting a beam which itself carries at least one headlamp intended to coat the front, the hood, the roof, the boot and the rear of the body.
- An installation generally has three side machines per side and a roof machine. In the case of bodywork of industrial vehicles, such as large truck cabs, the number of side machines must most often be increased.
- the invention aims at optimal use of the roof machine which eliminates the side machines of the prior art. Investments during the construction of the installation are reduced accordingly and a significant saving of space is achieved. Indeed, the location of the side machines is freed, which implies a shorter cabin length, therefore a smaller volume, more compact ventilation and / or fire protection systems, and, finally, a lighter infrastructure , therefore less expensive.
- the invention relates to a method of spraying coating product onto an object moved by a discontinuous movement conveyor, said method comprising a first phase of coating certain faces of said object using at least one projector carried by the beam of a roof machine, characterized in that a rotation about a vertical axis is printed on said object after said first phase and before a second phase of coating different faces of said object using said at least one projector carried by said beam.
- roof machine according to the method of the invention is particularly advantageous with objects of generally parallelepipedal shape such as vehicle bodies. Indeed, there are then five well-defined surfaces, roughly perpendicular two by two, to be coated, possibly discontinuous like that formed by the engine hood, the roof and the trunk of a sedan.
- the projection method is such that the projection of coating product, in a projection booth, during movements of the projector in the same direction as the prevailing air flow established in said booth takes place when the headlight moves in the opposite direction to the dominant air flow.
- the invention further relates to a coating product projection installation comprising a roof machine which comprises a beam carrying at least one projector and rectilinear transport means for the objects to be coated capable of interrupting the movement of said objects, characterized in that 'it further comprises a pivoting support capable of subjecting said objects to a rotation of approximately 90 ° about a vertical axis.
- FIG. 1 The installation of FIG. 1 is intended for coating motor vehicle bodies 1, for example truck cabs.
- Five sides of the bodies are to be coated, namely the front 1a, the rear 1b, the roof 1c, the right side 1d and the left side 1e.
- Each body is carried by a carriage 2 moved on a predefined path along an axis XX 'by means of an appropriate drive system 3.
- the drive system is of the discontinuous movement type, which means that the bodies are stopped during the coating phases.
- a roof machine consists of two gantries 11 and 12 each carrying respectively a lateral tracking carriage 13 and 14 supporting a beam 15 and allowing its displacement along the axis XX '.
- the beam 15 carries four projectors 16a to 16d of coating product, for example rotary projectors of pulverulent product.
- the body is supported by the carriage 2 forming a support.
- the carriage is formed of a fixed frame 2a and a turret 2b capable of pivoting about a vertical axis.
- the beam 15 is mobile at altitude; the carriages 13 and 14 are moved on the gantries 11 and 12 by means of motors, for example electric, and belts known to those skilled in the art.
- the movement of the carriages 13 and 14 at altitude makes it possible to sweep the beam the entire height of the objects to be coated.
- the ventilation of the cabin is carried out by means of an air supply, such as for example a fan 20, located in the ceiling 21 of the cabin 22 and a suction hood 23 formed under the floor 24 of the cabin. A dominant vertical air flow from top to bottom, materialized by the arrows F, is thus created in the cabin.
- FIGS 3 and 4 are views similar to Figures 1 and 2 respectively; identical elements have the same reference numbers.
- the beam 15 is shown in Figure 2 at the lowest point of its travel. Its upward movement combined with the start-up of the projectors 16 makes it possible to coat the front face 1a of the bodywork 1. The beam is then moved without projection to position itself opposite the rear face 1b of the bodywork and at the lowest point of its course. The projection resumes during the upward movement of the beam.
- the installation therefore makes it possible to coat the front 1a and rear 1b faces of the body 1 as well as the roof 1c if necessary.
- the projection takes place during movements of the beam carrying the projectors in the same direction and in the opposite direction to the dominant air flow established in the projection booth, that is to say opposite to the arrows F.
- the projectors constantly move away from the cloud of coating product not deposited on the body (sometimes called “overspray”). Indeed, the projectors 16 are moving upward while said “overspray” is driven down the body. This avoids soiling the projectors 16 and the beam 15, which facilitates maintenance of the installation.
- the body 1 has been rotated about a vertical axis of about 90 ° in the opposite trigonometric direction by means of the turret 2b. In this way, and by movements identical to those explained with reference to FIGS. 1 and 2, the left 1e and right 1d faces of the body can be coated by the projectors 16.
- the beam is shown in a high position for coating the roof 1c of the body. This coating could also take place with the bodywork placed in the position of FIGS. 1 and 2.
- the right side 1d of the bodywork is first coated from bottom to top for the reasons of soiling mentioned above.
- the left side 1e and the roof 1c are then coated.
- the five faces 1a to 1e of the bodywork other than the underside are coated by the roof machine alone.
- the uniformity of appearance is improved since a single supply of coating product is used for the roof machine, instead of the separate supplies usually used for side machines and roof machines.
- the body 1 Before leaving the coating installation, the body 1 may possibly undergo a second rotation of 90 ° in opposite direction of the first by means of the turret 2b in order to be returned to its initial position for the rest of the manufacturing process.
- the invention has been described with rotary sprayers of powdery product, but it can be implemented with any type of sprayer of liquid or powdery coating product.
Landscapes
- Spray Control Apparatus (AREA)
- Coating Apparatus (AREA)
Description
L'invention concerne un procédé et une installation de projection de produit de revêtement sur des objets portés par un convoyeur, tels que par exemple des carrosseries de véhicules automobiles.The invention relates to a method and an installation for spraying coating product onto objects carried by a conveyor, such as for example bodies of motor vehicles.
Sur une chaîne de production de l'art antérieur, telle que connue notamment de GB-A-2 190 312, les carrosseries sont déplacées par un convoyeur et l'installation est constituée de plusieurs machines de projection, dites latérales, destinées à revêtir les côtés de la carrosserie et d'une machine, dite de toit, comprenant deux portiques supportant une poutre qui porte elle-même au moins un projecteur destiné à revêtir l'avant, le capot, le pavillon, le coffre et l'arrière de la carrosserie. Une installation compte en général trois machines latérales par côté et une machine de toit. Dans le cas de carrosseries de véhicules industriels, telles que des cabines de camion de grandes dimensions, le nombre de machines latérales doit le plus souvent être augmenté.On a production line of the prior art, as known in particular from GB-A-2 190 312, the bodies are moved by a conveyor and the installation is made up of several projection machines, said to be lateral, intended to coat the sides of the bodywork and of a machine, called a roof machine, comprising two gantries supporting a beam which itself carries at least one headlamp intended to coat the front, the hood, the roof, the boot and the rear of the body. An installation generally has three side machines per side and a roof machine. In the case of bodywork of industrial vehicles, such as large truck cabs, the number of side machines must most often be increased.
L'invention vise à une utilisation optimale de la machine de toit qui permet de supprimer les machines latérales de l'art antérieur. Les investissements lors de la construction de l'installation sont réduits d'autant et un gain de place important est réalisé. En effet, l'emplacement des machines latérales est libéré, ce qui implique une longueur de cabine moindre, donc un volume moindre, des systèmes de ventilation et/ou de protection contre l'incendie plus compacts, et, enfin, une infrastructure plus légère, donc moins coûteuse.The invention aims at optimal use of the roof machine which eliminates the side machines of the prior art. Investments during the construction of the installation are reduced accordingly and a significant saving of space is achieved. Indeed, the location of the side machines is freed, which implies a shorter cabin length, therefore a smaller volume, more compact ventilation and / or fire protection systems, and, finally, a lighter infrastructure , therefore less expensive.
L'invention concerne un procédé de projection de produit de revêtement sur un objet déplacé par un convoyeur à mouvement discontinu, ledit procédé comprenant une première phase de revêtement de certaines faces dudit objet mettant en oeuvre au moins un projecteur porté par la poutre d'une machine de toit, caractérisé en ce qu'une rotation autour d'un axe vertical est imprimée audit objet après ladite première phase et avant une seconde phase de revêtement de faces différentes dudit objet mettant en oeuvre ledit au moins un projecteur porté par ladite poutre.The invention relates to a method of spraying coating product onto an object moved by a discontinuous movement conveyor, said method comprising a first phase of coating certain faces of said object using at least one projector carried by the beam of a roof machine, characterized in that a rotation about a vertical axis is printed on said object after said first phase and before a second phase of coating different faces of said object using said at least one projector carried by said beam.
L'utilisation d'une machine de toit selon le procédé de l'invention est particulièrement avantageuse avec des objets de forme globalement parallélépipédique telle que des carrosseries de véhicules. En effet, il existe alors cinq surfaces bien définies, et à peu près perpendiculaires deux à deux, à revêtir, éventuellement discontinues comme celle formée par le capot moteur, le toit et le coffre d'une berline.The use of a roof machine according to the method of the invention is particularly advantageous with objects of generally parallelepipedal shape such as vehicle bodies. Indeed, there are then five well-defined surfaces, roughly perpendicular two by two, to be coated, possibly discontinuous like that formed by the engine hood, the roof and the trunk of a sedan.
Selon un mode de réalisation avantageux de l'invention, le procédé de projection est tel que la projection de produit de revêtement, dans une cabine de projection, lors des mouvements du projecteur de même direction que le courant d'air dominant établi dans ladite cabine a lieu lors des mouvements du projecteur de sens opposé au courant d'air dominant.According to an advantageous embodiment of the invention, the projection method is such that the projection of coating product, in a projection booth, during movements of the projector in the same direction as the prevailing air flow established in said booth takes place when the headlight moves in the opposite direction to the dominant air flow.
L'invention concerne en outre une installation de projection de produit de revêtement comprenant une machine de toit qui comporte une poutre portant au moins un projecteur et des moyens de transport rectiligne des objets à revêtir aptes à interrompre le défilement desdits objets, caractérisée en ce qu'elle comprend en outre un support pivotant apte à faire subir auxdits objets une rotation d'environ 90° autour d'un axe vertical.The invention further relates to a coating product projection installation comprising a roof machine which comprises a beam carrying at least one projector and rectilinear transport means for the objects to be coated capable of interrupting the movement of said objects, characterized in that 'it further comprises a pivoting support capable of subjecting said objects to a rotation of approximately 90 ° about a vertical axis.
L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'une installation de projection de produit de revêtement conforme à son principe donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :
- la figure 1 est une vue schématique partielle de dessus d'une installation de projection de produit de revêtement selon l'invention ;
- la figure 2 est une vue schématique partielle en coupe selon la direction AA de la figure 1 ;
- la figure 3 est une vue schématique partielle de dessus de l'installation de la figure 1, lors d'une autre phase de fonctionnement et
- la figure 4 est une vue schématique partielle en coupe selon la direction BB de la figure 3.
- Figure 1 is a partial schematic view from above of a coating product spraying installation according to the invention;
- Figure 2 is a partial schematic sectional view in the direction AA of Figure 1;
- FIG. 3 is a partial schematic view from above of the installation of FIG. 1, during another phase of operation and
- FIG. 4 is a partial schematic view in section along the direction BB of FIG. 3.
L'installation de la figure 1 est destinée au revêtement de carrosseries de véhicules automobiles 1, par exemple des cabines de camion. Cinq faces des carrosseries sont à revêtir, à savoir l'avant 1a, l'arrière 1b, le toit 1c, le côté droit 1d et le côté gauche 1e. Chaque carrosserie est portée par un chariot 2 déplacé sur un trajet prédéfini le long d'un axe XX' au moyen d'un système d'entraînement 3 approprié. Le système d'entraînement est du type à mouvement discontinu, ce qui signifie que les carrosseries sont à l'arrêt lors des phases de revêtement.The installation of FIG. 1 is intended for coating
Une machine de toit est constituée de deux portiques 11 et 12 portant chacun respectivement un chariot de suivi latéral 13 et 14 supportant une poutre 15 et permettant son déplacement le long de l'axe XX'. La poutre 15 porte quatre projecteurs 16a à 16d de produit de revêtement, par exemple des projecteurs rotatifs de produit pulvérulent.A roof machine consists of two
Comme il est visible à la figure 2, la carrosserie est supportée par le chariot 2 formant support. Le chariot est formé d'un bâti fixe 2a et d'une tourelle 2b susceptible de pivoter autour d'un axe vertical.As shown in Figure 2, the body is supported by the
La poutre 15 est mobile en altitude; les chariots 13 et 14 sont déplacés sur les portiques 11 et 12 au moyen de moteurs, par exemple électriques, et de courroies connus de l'homme du métier. Le mouvement des chariots 13 et 14 en altitude permet de faire balayer à la poutre toute la hauteur des objets à revêtir. La ventilation de la cabine, en particulier l'extraction des particules de produit de revêtement non déposées sur la carrosserie 1, est effectuée grâce à une alimentation en air, telle que par exemple un ventilateur 20, situé dans le plafond 21 de la cabine 22 et une hotte d'aspiration 23 formée sous le plancher 24 de la cabine. Un courant d'air dominant vertical de haut en bas, matérialisé par les flèches F, est ainsi créé dans la cabine.The
Les figures 3 et 4 sont des vues similaires aux figures 1 et 2 respectivement; les éléments identiques portent les mêmes références numériques.Figures 3 and 4 are views similar to Figures 1 and 2 respectively; identical elements have the same reference numbers.
Le fonctionnement de l'installation est le suivant:The operation of the installation is as follows:
La poutre 15 est représentée à la figure 2 au point le plus bas de sa course. Son mouvement ascendant combiné à la mise en route des projecteurs 16 permet de revêtir la face avant 1a de la carrosserie 1. La poutre est ensuite déplacée sans projection pour se positionner en regard de la face arrière 1b de la carrosserie et au point le plus bas de sa course. La projection reprend lors du mouvement ascendant de la poutre.The
Dans la configuration représentée l'installation permet donc de revêtir les faces avant 1a et arrière 1b de la carrosserie 1 ainsi que le toit 1c si nécessaire.In the configuration shown, the installation therefore makes it possible to coat the
Selon une caractéristique avantageuse de l'invention, la projection a lieu lors des mouvements de la poutre portant les projecteurs de même direction et de sens opposé au courant d'air dominant établi dans la cabine de projection, c'est à dire opposé aux flèches F.According to an advantageous characteristic of the invention, the projection takes place during movements of the beam carrying the projectors in the same direction and in the opposite direction to the dominant air flow established in the projection booth, that is to say opposite to the arrows F.
Ainsi, lors des phases de projection, les projecteurs s'éloignent en permanence du nuage de produit de revêtement non déposé sur la carrosserie (parfois appelé "overspray"). En effet, les projecteurs 16 sont en mouvement vers le haut alors que ledit "overspray" est entraîné vers le bas de la carrosserie. On évite ainsi de salir les projecteurs 16 et la poutre 15, ce qui facilite la maintenance de l'installation.Thus, during the projection phases, the projectors constantly move away from the cloud of coating product not deposited on the body (sometimes called "overspray"). Indeed, the
A la figure 3, la carrosserie 1 a subi une rotation autour d'un axe vertical d'environ 90° dans le sens trigonométrique inverse au moyen de la tourelle 2b. De la sorte, et par des mouvements identiques à ceux explicités en regard des figures 1 et 2, les faces gauche 1e et droite 1d de la carrosserie peuvent être revêtues par les projecteurs 16.In Figure 3, the
A la figure 4, la poutre est représentée dans une position haute permettant le revêtement du toit 1c de la carrosserie. Ce revêtement pourrait aussi avoir lieu avec la carrosserie placée dans la position des figures 1 et 2.In Figure 4, the beam is shown in a high position for coating the
Le coté droit 1d de la carrosserie est d'abord revêtu de bas en haut pour les raisons de salissure évoquées ci-dessus. Le côté gauche 1e et le toit 1c sont revêtus ensuite.The
Ainsi, les cinq faces 1a à 1e de la carrosserie autres que la face inférieure sont revêtues par la seule machine de toit. On améliore l'uniformité d'aspect puisque qu'on utilise une seule alimentation en produit de revêtement pour la machine de toit, au lieu des alimentations séparées habituellement utilisées pour les machines latérales et les machines de toit.Thus, the five faces 1a to 1e of the bodywork other than the underside are coated by the roof machine alone. The uniformity of appearance is improved since a single supply of coating product is used for the roof machine, instead of the separate supplies usually used for side machines and roof machines.
Avant de quitter l'installation de revêtement, la carrosserie 1 peut éventuellement subir une seconde rotation de 90° en sens inverse de la première au moyen de la tourelle 2b afin d'être replacée dans sa position initiale pour la suite du processus de fabrication.Before leaving the coating installation, the
L'invention a été décrite avec des projecteurs rotatifs de produit pulvérulent, mais elle peut être mise en oeuvre avec tout type de projecteurs de produit de revêtement liquide ou pulvérulent.The invention has been described with rotary sprayers of powdery product, but it can be implemented with any type of sprayer of liquid or powdery coating product.
Claims (8)
- Method for spraying a coating product on an object (1) moved by a discontinuously moving conveyor (3), the said method comprising a first phase of coating some of the faces (1a, 1b, 1c) of the said object, employing at least one spray device (16) carried by the beam (15) of a roof machine (11-15), characterized in that the said object is rotated about a vertical axis after the said first phase and before a second phase of coating different faces (1d, 1c) of the said object employing the said at least one spray device carried by the said beam.
- Method according to Claim 1, characterized in that, while the conveyor (3) is at rest, the said object is rotated through 90° between the coating of the front face (1a) and the rear face (1b), on the one hand, and of the left face (1e) and right face (1d), on the other hand, of the said object (1).
- Method according to Claim 1, characterized in that the spraying with the coating product, in a spray booth (22), during the movements of the spray device (16) parallel with the predominant airflow (F) established in the said booth, takes place during the movements of the said spray device in the opposite direction to the said airflow.
- Method according to one of the preceding claims, characterized in that the said object is a motor-vehicle body (1).
- Installation for spraying a coating product, comprising a roof machine (11, 12, 13, 14, 15) which includes a beam (15) carrying at least one spray device (16) and means (3) for transporting the objects (1) to be coated in a straight line, which means are capable of interrupting the advance of the said objects, characterized in that it furthermore comprises a pivoting support (2a, 2b) capable of rotating the said objects through approximately 90° about a vertical axis.
- Installation according to Claim 5, in which the said roof machine includes a beam (15) carrying at least one coating-product spray device (16), characterized in that the said beam can move translationally in vertical movements and in tracking movements parallel to the axis (XX') of the means for transporting the said objects.
- Installation according to either of Claims 5 and 6, characterized in that the coating product is pulverulent.
- Installation according to either of Claims 5 and 6, characterized in that the coating product is liquid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9401320 | 1994-02-02 | ||
| FR9401320A FR2715586B1 (en) | 1994-02-02 | 1994-02-02 | Method and installation for coating projection. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0666112A1 EP0666112A1 (en) | 1995-08-09 |
| EP0666112B1 true EP0666112B1 (en) | 1997-12-17 |
Family
ID=9459827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95410006A Expired - Lifetime EP0666112B1 (en) | 1994-02-02 | 1995-01-30 | Method and Installation for spraying coating product |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0666112B1 (en) |
| DE (1) | DE69501217T2 (en) |
| ES (1) | ES2110821T3 (en) |
| FR (1) | FR2715586B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148220A (en) * | 2014-08-15 | 2014-11-19 | 京东方科技集团股份有限公司 | Spraying system |
| CN106622786A (en) * | 2017-03-03 | 2017-05-10 | 东莞市毅华自动化科技有限公司 | Automatic oil spraying machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3430531A1 (en) * | 1984-08-18 | 1986-02-27 | Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim | Method and apparatus for the processing of surfaces |
| GB2190312B (en) * | 1986-04-01 | 1990-12-19 | Honda Motor Co Ltd | Method and apparatus for painting object |
-
1994
- 1994-02-02 FR FR9401320A patent/FR2715586B1/en not_active Expired - Fee Related
-
1995
- 1995-01-30 EP EP95410006A patent/EP0666112B1/en not_active Expired - Lifetime
- 1995-01-30 ES ES95410006T patent/ES2110821T3/en not_active Expired - Lifetime
- 1995-01-30 DE DE69501217T patent/DE69501217T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2110821T3 (en) | 1998-02-16 |
| DE69501217D1 (en) | 1998-01-29 |
| DE69501217T2 (en) | 1998-07-23 |
| EP0666112A1 (en) | 1995-08-09 |
| FR2715586A1 (en) | 1995-08-04 |
| FR2715586B1 (en) | 1996-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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