EP0369483B1 - Installation pour revêtir des objets longs - Google Patents

Installation pour revêtir des objets longs Download PDF

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Publication number
EP0369483B1
EP0369483B1 EP89121346A EP89121346A EP0369483B1 EP 0369483 B1 EP0369483 B1 EP 0369483B1 EP 89121346 A EP89121346 A EP 89121346A EP 89121346 A EP89121346 A EP 89121346A EP 0369483 B1 EP0369483 B1 EP 0369483B1
Authority
EP
European Patent Office
Prior art keywords
chamber
treatment
powder
long material
coating
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
Application number
EP89121346A
Other languages
German (de)
English (en)
Other versions
EP0369483A1 (fr
Inventor
Adolf Berkmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COLUMBUS SYSTEM PATENT AG
Original Assignee
COLUMBUS SYSTEM PATENT AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COLUMBUS SYSTEM PATENT AG filed Critical COLUMBUS SYSTEM PATENT AG
Publication of EP0369483A1 publication Critical patent/EP0369483A1/fr
Application granted granted Critical
Publication of EP0369483B1 publication Critical patent/EP0369483B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B16/00—Spray booths
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • 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
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations

Definitions

  • the invention relates to a long powder coating system with individual treatment stations with which a pretreatment, drying, surface coating and curing of the coating takes place, and a transport device for transporting the long goods from one treatment station to another.
  • a certain remedy is provided by arranging only two treatment chambers one behind the other, the next two treatment chambers also being arranged one behind the other but parallel to the first two treatment chambers and by providing a turning space for the long goods on the way from the second to the third treatment chamber to be able to carry out the conveying process in the opposite direction through the other two chambers. This arrangement also requires a very large amount of space because of the turning space.
  • the object of the invention is to design a long goods powder coating system of the type described at the outset and to arrange the individual treatment stations in such a way that the space requirement can be considerably reduced.
  • a long goods powder coating system according to the preamble of claim 1 in that the individual treatment stations have chambers for completely receiving the long goods, which are arranged one behind the other in their longitudinal extent transversely to the direction of transport of the long goods, that the individual Chambers have an inlet and outlet opening, the length of which corresponds at least to the length of the long product and extends in the longitudinal direction of the chamber and that the transport device for introducing and removing the long product into and out of the chamber and for this gradual onward transport to the next chamber.
  • the space requirement in the embodiment according to the invention is significantly reduced since the turning space is eliminated. Since the turning space must have a width which is greater than the length of the long goods, the space requirement in this arrangement is also relatively large transversely to the direction of transport.
  • Another disadvantage of the known systems that work with a continuous conveyance of the objects through the chambers is that the degree of carryover for adhering liquid is very large if the articles are transported further from the pretreatment station, which is not necessary for the step-by-step transport according to the present invention, since the step-by-step transport can be set up in such a way that there is sufficient time for the liquid to drain before it enters the Drying station to be transported.
  • the pre-treatment station and the drying station can be put out of operation if there are enough articles in the buffer zones and the subsequent treatment stations, namely the coating station and the curing station, can then continue to work until the pending articles are finished without that the previous stations still have to be kept in operation.
  • a preferred embodiment results from the fact that the inlet and outlet openings are provided in the upper region of each chamber.
  • the objects to be treated are discharged into the chamber from above by the transport device and removed upwards after the treatment.
  • This arrangement of the inlet and outlet opening has the advantage that both side walls of each chamber remain free for corresponding treatment units, so that the objects can be treated on both sides.
  • a further advantageous embodiment of the invention is that the chamber is divided in the longitudinal direction and that the two parts can be displaced relative to one another transversely to their longitudinal extent in order to adapt to different long goods.
  • the chamber size can be adjusted to the objects to be treated, which also has a favorable effect on the respective treatment process.
  • the one chamber part has a pivotably mounted base plate which slidably rests on the bottom of the opposite chamber part. This can despite the displaceability, there is no gap in the floor area
  • the individual chambers have a treatment unit which can be moved inside the longitudinal direction of the chamber, a treatment area and at least one preparation area for the treatment unit outside the treatment area at the end of the chamber.
  • the respective treatment unit can be moved, very long objects, up to a length which corresponds to the length of the working area, can be completely treated before they leave the chamber.
  • This is particularly advantageous in the pretreatment station because the object to be treated only comes out of the chamber after the adhering liquid has dripped off, as a result of which little liquid is carried along, which cannot be avoided in a continuous passage through a chamber.
  • the preparation area is used to hold the treatment center when the chamber is to be cleaned or when there is a risk that the Objects in the chamber could damage the treatment center.
  • the basic design of the chamber namely the divided design and thus the adaptability to objects of different sizes and the arrangement of the treatment unit as a mobile unit, are the same regardless of the use of the chamber at the individual treatment stations. Only the individual treatment units that are adapted to the respective treatment process are different.
  • the movable treatment unit has at least one spray nozzle, which can optionally be connected to a source of cleaning or treatment liquid and a source of rinsing liquid, and a collecting channel is tiltably mounted on the bottom of the chamber, each of which collects the collected liquid after tilting into either a container for treatment liquid or a container for rinsing liquid.
  • the movable treatment unit comprises at least one unit equipped with infrared radiators and reflectors, which extends approximately over the entire inner circumference along a chamber section.
  • the object to be treated is subjected to heat treatment from all sides.
  • a chamber designed in this way is also used for curing of the powder coating applied to the object.
  • air-blowing nozzles are provided on the movable treatment unit in order to accelerate the drying process.
  • the movable treatment unit comprises at least one spray nozzle for the powder and one suction device opposite the spray nozzle.
  • chambers of this type have a suction device for the superfluous powder flowing past the object to be coated, it cannot be avoided that excess powder also settles on the inner walls in the work area. This powder must be removed before each color change because it is caused by the air flow inside the chamber the suction device is caused, detach from the wall and can hit the object to be coated. Since the colors do not mix into a mixed color, the differently colored powder particles can be seen immediately on the object to be coated, which leads to rejects.
  • spray devices for rinsing liquid are provided within the chamber, which are used to uniformly spray the entire inner wall surface of the working area of the chamber.
  • the treatment unit is moved into the preparation area, where on the one hand it does not interfere with the cleaning process and on the other hand it is protected against splash water.
  • a preferred embodiment of the invention is characterized in that the chamber has a substantially rectangular cross section with rounded transitions between the side walls and the ceiling and floor area and that the spray devices are arranged in the upper rounded transitions and washing liquid both to the ceiling area and to the wall area spray out.
  • the formation of rounded transitions and the arrangement of the spray devices in this area make it possible to produce a uniform water spray film on the inner wall of the work area and to avoid deposits which could occur in corners. The invention is explained below with reference to a preferred embodiment shown in the drawing.
  • FIG. 1 shows the basic arrangement of the individual treatment stations denoted by I to IV, each of which has a chamber and a treatment unit inserted therein, the chambers being essentially identical to one another, while the treatment unit is adapted to the respective treatment process.
  • the chambers of the individual treatment stations are arranged parallel to one another, an interspace V being provided between the individual chambers or treatment stations, which serves as a buffer zone for the intermediate storage of the objects treated in the respective treatment stations before they are introduced into the next treatment station.
  • interspace V is provided between the individual chambers or treatment stations, which serves as a buffer zone for the intermediate storage of the objects treated in the respective treatment stations before they are introduced into the next treatment station.
  • each treatment station comprises a chamber 1 with a work area 2 and two preparation areas 3, one of which is formed at the end of the work area.
  • a treatment unit can be moved along rails 4 within each chamber, the treatment units of the successive stations being designated 5, 6, 7 and 8.
  • the treatment units are each located at the left end of the chambers in the drawing in the preparation area 3, into which they are moved when loading the chamber with long items to be treated or when cleaning the chamber.
  • the preparation areas 3 are separated from the work areas 2 by short dividing walls or flanges in order to prevent the treatment liquid, cleaning liquid or the powder coating from passing from the work area into the preparation area. The partitions are only so short that they do not hinder a process of the treatment center.
  • a transport system schematically indicated by rails 9, is provided, with the aid of which the long goods to be treated can be transported from one treatment station to the buffer and from there to the next treatment station.
  • 10 and 11 designate collection containers which are assigned to treatment station I and are used to collect treatment liquid and rinsing liquid.
  • Numbers 12 denote filters which are assigned to treatment station III, in which the powder coating takes place and which are used to recover the excess amount of powder sucked out of the working area.
  • FIG. 2 shows the individual chambers of the various treatment stations in a diagrammatic representation for better illustration. This illustration also shows the long product to be treated, which is designated by 13 and, in the example shown, consists of individual tubes which are received on a corresponding holding device which is transported step by step from one treatment station to another by the transport system.
  • FIGS. 3 to 6 The basic configuration of the chambers used in the individual treatment stations and the different treatment units within the chamber are explained with reference to FIGS. 3 to 6. From Figures 3 to 6 an essential feature of the chamber can be seen, which consists in the fact that the chamber, which is denoted overall by 1, is divided in the longitudinal direction and has two chamber parts 14 and 15, of which the chamber part 14 on rails 16 transversely is displaceable to the longitudinal direction of the chamber, so that the chamber width can be adapted to the respective objects to be treated.
  • the respective chamber has an essentially rectangular cross section with rounded transitions 17 and 18 between the side walls 19 and the ceiling area 20 on the one hand and between the side walls 19 and the floor area 21 on the other hand.
  • a longitudinally extending opening 22 is provided, which serves for the insertion and removal of elongated objects, for example pipes 13.
  • the displaceable part 14 of the chamber 1 has in its bottom region 21 a pivotably mounted bottom plate 23, which rests on the bottom of the fixed chamber part 15 and can adapt to the inclined floor profile of the fixed chamber part when the chamber part 14 is moved.
  • This basic chamber structure is the same for all chambers, regardless of which treatment station they are assigned to.
  • a treatment unit 5 is provided in the interior of the chamber 1 on each side wall for pretreatment, ie cleaning, degreasing and rinsing as well as phosphating the object to be coated.
  • Each treatment unit 5 can be moved on rails 4 in the longitudinal direction of the chamber and has pipelines 24 and spray nozzles 25. Treating liquid for cleaning, degreasing and phosphating the objects or rinsing liquid are sprayed out of these spray nozzles in order to rinse off the object after the treatment.
  • a tiltable channel 26 is provided on the fixed chamber part 15, which in the one tilted position the treatment liquid in a collecting container and in the another tilt position, the rinsing liquid in another collecting container, which are only shown in Fig. 1, conducts. So that the liquid can reach the tipping channel 26 despite the bottom plate 23, the bottom plate 23 rests on ramps 27 which are arranged on the bottom of the fixed part, so that a certain gap remains between the bottom of the fixed part and the bottom plate.
  • the chamber 1 is designed as a drying station.
  • a treatment unit 6 can be moved within the chamber on each side wall along the rails 4 and has infrared radiators 28 and air-blowing nozzles 29 in order to dry the object coming from the chamber according to FIG. 3.
  • Fig. 5 shows the chamber as a coating station.
  • a treatment unit 7 is arranged on each side wall along the rails 4 and has spray nozzles 30 and a suction device 31.
  • spray nozzles and suction devices are arranged in such a way that a suction device is directly opposite each of the spray nozzles.
  • This chamber is also in the transition area 17, ie in the transition between the side wall and the ceiling area with a spray device 32, which consists of a water pipe and spray nozzles, which are used to rinse off the entire inner wall surfaces, which is necessary with each color change to the rinse off powder particles adhering to the wall, which get to the wall despite the suction device.
  • the chamber serves as a curing station for the applied lacquer layer.
  • movable treatment units 8 are arranged on both side walls, which have infrared radiators 33 in order to cause the applied powder layer to gel by the action of heat and to activate the hardener contained in the powder coating.

Landscapes

  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (11)

  1. installation qui permet de réaliser le revêtement par poudre des produits longs à l'intérieur de stations de traitement séparées dans lesquelles on réalise un traitement préparatoire, un séchage, un revêtement superficiel et un durcissement du revêtement, et se rapporte à un dispositif qui permet de transporter le produit long d'une station de traitement à l'autre, caractérisée en ce que les stations de traitement séparées (I, II, III, IV) disposent de chambre (1) qui assurent la prise en charge complète du produit long (13) et qui sont disposées les unes derrière les autres dans le sens de la longueur et perpendiculairemet au sens du transfert du produit long, avec un intervalle pour le stockage V, en ce que les chambres séparées présentent une ouverture d'entrée et de sortie (22), dont la longueur correspond au minimum à la longueur du produit long (13) qui se présente dans le sens de la longueur de la chambre (1) et en ce que la direction du transfert (9) est conçue pour permettre l'introduction et l'évacuation du produit long (13) dans la chambre (1) et hors de celle-ci et est conçue pour la progression pas à pas du produit long jusqu'à la chambre suivante.
  2. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 1, caractérisée en ce que l'ouverture d'entrée et de sortie (22) est prévue dans la partie supérieure de chaque chambre.
  3. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 1 ou 2, caractérisée en ce que la chambre (1) est divisée dans le sens de la longueur et en ce que les deux parties (14 et 15) sont mobiles l'une part rapport à l'autre et perpendiculairement au sens de la longueur, de façon à pouvoir s'adapter aux différents produits longs.
  4. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 3, caractérisée en ce que l'une des parties (14) de la chambre dispose d'une tôle de fond (23) pivotante qui repose de façon que l'on puisse la déplacer sur le fond (21) de la partie (15) de la chambre, placée en vis-à-vis.
  5. installation qui permet de réaliser le revêtement par poudre des produits longs selon une des revendications allant de 1 à 4, caractérisée en ce que les chambres séparées présentent une unité de traitement mobile (5,6,7,8) dans le sens de la longueur de la chambre et qui se trouve à l'intérieur de la chambre, une zone de traitement (2) de même qu'au moins, une zone d'approvisionnement (3) pour l'unité de traitement, en dehors de la zone de traitement, à l'extrémité de la chambre.
  6. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 5, caractérisée en ce que l'unité de traitement mobile (5) présente au moins une buse de pulvérisation (25), que l'on peut raccorder au choix à une source de liquide de nettoyage ou de traitement et à une source de liquide de rinçage et en ce que, au niveau du fond de la chambre, se trouve une rigole collectrice (26) que l'on peut basculer et qui, selon la position de bascule, conduit le liquide récupéré soit dans un conteneur pour liquide de traitement, soit dans un conteneur pour liquide de rinçage.
  7. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 5, caractérisée en ce que l'unité de traitement mobile (6,8) comprend au moins une unité occupée par des sources de rayonnements infrarouge (28, 33) et par des réflecteurs, unité qui s'étend à peu près sur tout l'espace intérieur le long de l'un des éléments de la chambre.
  8. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 7, caractérisé en ce que l'on a prévu de placer des buses d'air comprimé (29) au niveau de l'unité de traitement mobile (6).
  9. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 5, caractérisée en ce que l'unité de traitement mobile (7) comprend au moins une buse de pulvérisation (30) pour la poudre et un dispositif d'aspiration (31) placé en face de la buse de pulvérisation.
  10. installation qui permet de réaliser le revêtement par poudre les produits longs selon une des revendications allant de 1 à 9, caractérisé en ce que, à l'intérieur de la chambre, on a prévu des dispositifs de pulvérisation (32) pour le liquide de rinçage, qui servent à nettoyer, par une pulvérisation régulière, la totalité de la surface des parois intérieures, dans la zone de travail (2) de la chambre (1).
  11. installation qui permet de réaliser le revêtement par poudre des produits longs selon la revendication 10, caractérisé en ce que la chambre présente une section transversale pratiquement rectangulaire, dont les raccords (17, 18) situés entre les parois latérales (19) et les zones supérieures et inférieure (20, 21) sont arrondis, et en ce que les dispositifs de pulvérisation (32) sont placés au niveau de l'arrondi des raccords supérieurs (17) et pulvérise le liquide de rinçage aussi bien en haut (20) que sur les côtés (19).
EP89121346A 1988-11-17 1989-11-17 Installation pour revêtir des objets longs Expired - Lifetime EP0369483B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838927 1988-11-17
DE3838927A DE3838927A1 (de) 1988-11-17 1988-11-17 Langgut-pulverbeschichtungsanlage

Publications (2)

Publication Number Publication Date
EP0369483A1 EP0369483A1 (fr) 1990-05-23
EP0369483B1 true EP0369483B1 (fr) 1992-11-11

Family

ID=6367366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121346A Expired - Lifetime EP0369483B1 (fr) 1988-11-17 1989-11-17 Installation pour revêtir des objets longs

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EP (1) EP0369483B1 (fr)
DE (1) DE3838927A1 (fr)
DK (1) DK574889A (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
FR2683746B1 (fr) * 1991-11-19 1995-01-27 Application Peintures Ste Indle Procede et installation pour realiser un revetement de surface sur des articles a base de resines synthetiques ou materiaux similaires.
DE19523319A1 (de) * 1995-06-27 1997-01-09 Tegometall Int Ag Vorrichtung zur Sprühbeschichtung von Werkstücken mit Farbe
DE29515615U1 (de) * 1995-10-02 1996-03-21 GOSAG Stahl- und Anlagenbau GmbH, 06308 Klostermansfeld Arbeitskabinensystem zur Reinigung und Oberflächenbehandlung von Gegenständen
DE19610688A1 (de) * 1996-03-19 1996-08-22 Erich Bauer Kombinierte, fahrbare Durchlaufkabinen-Trennung auf einen Sprühstand und Frontseite oder Mitte der Kabine in Förderrichtung nach beiden Seiten
DE29616008U1 (de) * 1996-09-14 1996-12-19 GOSAG Stahl- und Anlagenbau GmbH, 06308 Klostermansfeld Anlage zur Oberflächenbeschichtung von schweren Bauteilen
DE19641524C2 (de) * 1996-09-30 2001-10-31 Gratz Achim Beschichtungsanlage für Großteile, insbesondere für die Oberflächenbehandlung von Metall- und Kunststoffteilen
DE102010032143A1 (de) * 2010-07-24 2012-01-26 Eisenmann Ag Anlage zur Oberflächenbehandlung von Gegenständen

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DE1820746U (de) * 1960-06-03 1960-10-27 Robert Hildebrand Maschb G M B Berieselungsvorrichtung fuer spritzkabinen.
DE2306851C3 (de) * 1973-02-12 1979-06-28 Otto Duerr Anlagenbau Gmbh, 7000 Stuttgart Verfahren und Vorrichtung zum Fördern von Fahrzeugkarosserien oder ähnlichen bemessenen Werkstücken zur Durchführung eines Beschichtens derselben
CH611184A5 (fr) * 1975-09-29 1979-05-31 Gema Ag
DE3043629C2 (de) * 1980-11-19 1983-03-31 Gramm, Gerhard, 7533 Tiefenbronn Vorrichtung zum Pulverversprühen, insbesondere zum Sprühbeschichten von Gegenständen
GB2091858B (en) * 1980-12-11 1984-09-26 Infraroedteknik Ab Surface treatment of objects
DE3135819A1 (de) * 1981-09-10 1983-03-17 Chemotec Engineering GmbH, 5220 Waldbröl Verfahren und vorrichtung zur oberflaechennassbehandlung von gegenstaenden
DE3340510C2 (de) * 1983-11-09 1986-10-30 Hans-Josef 5010 Bergheim Licher Elektrostatische Pulverbeschichtungsvorrichtung
US4538542A (en) * 1984-07-16 1985-09-03 Nordson Corporation System for spray coating substrates
CH668008A5 (de) * 1985-04-30 1988-11-30 H U Ramseier Fa Elektrostatische pulverbeschichtungsanlage.
DE3516826C3 (de) * 1985-05-10 1995-03-23 Ramseier Oberflaechentechnik & Längsbewegliche Reinigungseinrichtung im Inneren einer Beschichtungskabine
US4721630A (en) * 1985-07-31 1988-01-26 Honda Giken Kogyo Kabushiki Kaisha Painting process for inner panel region of motorcar vehicle body and apparatus therefor
DE3640699A1 (de) * 1986-11-28 1988-06-09 Gema Ransburg Ag Kabine zum spruehbeschichten von objekten

Also Published As

Publication number Publication date
EP0369483A1 (fr) 1990-05-23
DE3838927A1 (de) 1990-05-23
DK574889D0 (da) 1989-11-16
DK574889A (da) 1990-05-18

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