EP1749178B1 - Device for drying painted vehicle bodyworks - Google Patents

Device for drying painted vehicle bodyworks Download PDF

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Publication number
EP1749178B1
EP1749178B1 EP05739575A EP05739575A EP1749178B1 EP 1749178 B1 EP1749178 B1 EP 1749178B1 EP 05739575 A EP05739575 A EP 05739575A EP 05739575 A EP05739575 A EP 05739575A EP 1749178 B1 EP1749178 B1 EP 1749178B1
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EP
European Patent Office
Prior art keywords
chamber
inert gas
lock chamber
drying
inlet
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 - Fee Related
Application number
EP05739575A
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German (de)
French (fr)
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EP1749178A1 (en
Inventor
Josef Krizek
Werner Swoboda
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.)
Eisenmann Anlagenbau GmbH and Co KG
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Eisenmann Anlagenbau GmbH and Co KG
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Publication of EP1749178A1 publication Critical patent/EP1749178A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/008—Seals, locks, e.g. gas barriers or air curtains, for drying enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/066—Movable chambers, e.g. collapsible, demountable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • Object of the present invention is to provide a device of the type mentioned in such a way that it can be operated with as little inert gas.
  • the invention is based on the consideration that basically the less inert gas is required, the smaller the volume that is to be filled by the inert gas and the less the inert gas is contaminated during operation.
  • the corresponding chambers of the device can not be made arbitrarily small, since the objects must be transported into or through them.
  • the invention is based on the recognition that nevertheless a further saving in inert gas can be achieved. Namely, a movable boundary wall can be brought closer to the standing object to be dried than a stationary boundary wall which must at least keep at least that distance from the object which corresponds to its largest dimension in the direction in question.
  • the movable boundary wall should have an outlet through which the gas displaced towards or away from the object when the boundary wall moves.
  • the movable boundary wall is designed as a hood which can be turned over the object by a substantially vertical movement.
  • Many objects to be dried in particular vehicle bodies, have a relatively irregular, upwardly pointing contour, while at the bottom they are comparatively flat.
  • a hood which is placed over the top of the objects to be dried, therefore, a large volume reduction can be achieved.
  • a particularly low carry-over of normal atmosphere into the drying chamber is achieved with that embodiment of the invention in which a movable boundary wall is provided in the inlet lock chamber.
  • an outlet lock chamber When operated in a continuous drying devices an outlet lock chamber is additionally provided, which communicates at least temporarily with the inert gas atmosphere present in the drying chamber and at least temporarily with the Normalatmospotrore.kommuni emerge.
  • the inlet lock chamber it is convenient, albeit in the outlet lock chamber a movable boundary wall is provided.
  • a section of a painting plant which includes a pre-dryer 204 and a main dryer 206.
  • the latter in turn has an inlet lock 207 and a dryer tunnel 208.
  • the vehicle bodies 202 are freshly painted in a spray booth, not shown, with the aid of a conveyor system, not shown in detail in the figures coming from the left into the pre-dryer 204 and here of a major part of the solvent freed. From there they enter the inlet lock 207, which serves to separate the outside of the main dryer 206, that is also in the pre-dryer 204, prevailing normal atmosphere of an inert gas atmosphere, which is present in the main dryer 206.
  • the vehicle bodies 202 After passing through the inlet lock 207 described in more detail below, the vehicle bodies 202 are moved through the drying tunnel 208 filled with inert gas and brought to a temperature between 40 ° C. and 150 ° C., whereby the paint is cured. It is followed by an outlet lock, not shown, which may be similar to the inlet lock 207 built, but is reversed.
  • the inlet lock 207 has a housing 213, which in an inlet chamber 214, a dip tank 219 and an outlet chamber 215 is divided.
  • the inlet chamber 214 communicates with the pre-dryer 204 via an opening 216, which is closable by a roller door 217.
  • the outlet chamber 215 communicates with the drying tunnel 208 via an opening 218, which may also have a roller shutter.
  • the inlet chamber 214 is substantially in normal atmosphere, the plenum 219 with an inert gas of greater density and the outlet chamber 215 with a smaller density inert gas, preferably with the density and temperature of the inert gas in the dryer tunnel 208 filled.
  • the densities are chosen so that the atmospheres in the various chambers 214, 215 and 219 of the inlet lock 207 mix only slightly.
  • a transfer mechanism which moves the vehicle bodies 202 through the inlet lock 207, comprises two lift tables 240, 241, with each of which a support platform 242, 243 can be moved vertically upwards and downwards.
  • the support platforms 242, 243 are in turn provided with conveyor systems which are compatible with the conveyor systems in the pre-dryer 204 and in the drying tunnel 208.
  • a hood 244 is arranged vertically movable whose edges seal with the walls of the inlet chamber 214 tight.
  • the contour of the hood 244 is the contour of the vehicle body 202 closely adjusted.
  • the vehicle bodies 202 are moved through the inlet lock 207 in the following manner:
  • the vehicle body 202 is inserted from the pre-dryer 204 with the roller door 217 open through the inlet opening 216 in the inlet chamber 214 of the inlet lock 207 and passes to the support platform 242 of the lifting table 240, which is raised for this purpose.
  • the hood 244 is lowered from above and brought very close to the vehicle body 202 ( FIG. 2 ).
  • the intermediate air is largely displaced to the outside via an outlet flap 260 provided in the hood 244.
  • the amount of inert gas needed in this context is relatively small, since the volume to be purged due to the hood 244 is significantly reduced.
  • the support platform 242 of the lift table 240 is lowered as shown in FIG FIG. 3 is shown.
  • the vehicle body 202 immersed in the dense inert gas, which is located in the dip tank 219.
  • the support platform 242 of the lifting table 240 is at the same height as the support platform 243 of the adjacent lifting table 241.
  • the vehicle body 202 can thus, as is apparent from FIG. 4 results are transferred from the lifting table 240 to the lifting table 241.
  • the support platform 243 of the lifting table 241 is raised so that the conveyor system of the support platform 243 reaches the same height as the conveyor system within the drying tunnel 208.
  • the vehicle body 202 is lifted in this process in the outlet chamber 215 of the lock 207, in which the hot inert gas atmosphere is present (see. FIG. 5 ).
  • the vehicle body 202 in the direction of the arrow FIG. 6 extended into the dryer tunnel 208.
  • the support platform 242 of the lifting table 240 is raised again.
  • the hood 244 returns to its raised position, so that the inlet chamber 214 of the inlet lock 207 can be loaded with a new vehicle body 202.

Description

Die Erfindung betrifft eine Vorrichtung zum Trocknen von Gegenständen, insbesondere von lackierten Fahrzeugkarosserien, mit

  1. a) einer Trockenkammer, deren Innenraum mit einer Inertgasatmosphäre gefüllt ist;
  2. b) einer Einlaßschleusenkammer, welche zumindest zeitweise mit der außerhalb der Vorrichtung vorliegenden Normalatmosphäre und zumindest zeitweise mit der in der Trockenkammer vorliegenden Inertgasatmosphäre kommuniziert;
  3. c) einem Fördersystem, mit dem die Gegenstände durch die Einlaßschleusenkammer in die Trockenkammer und wieder aus dieser herausbewegt werden können.
The invention relates to a device for drying objects, in particular of painted vehicle bodies, with
  1. a) a drying chamber whose interior is filled with an inert gas atmosphere;
  2. b) an inlet lock chamber which at least temporarily communicates with the normal atmosphere outside the device and at least temporarily with the inert gas atmosphere present in the drying chamber;
  3. c) a conveyor system with which the objects can be moved out through the inlet lock chamber in the drying chamber and back out of this.

In jüngster Zeit gewinnen zunehmend Lacke Bedeutung, die in einer Inertgasatmosphäre zum Beispiel unter UV-Licht ausgehärtet werden müssen, um unerwünschte Reaktionen mit Bestandteilen der normalen Atmosphäre, insbesondere mit Sauerstoff, zu verhindern (siehe beispielsweise DE 100 51 109 C1 ). Diese neuartigen Lacke zeichnen sich durch eine sehr große Oberflächenhärte und durch kurze Polymerisationszeiten aus. Der letztgenannte Vorteil setzt sich bei Lackieranlagen, die im kontinuierlichen Durchlauf betrieben werden, unmittelbar in geringere Anlagenlängen um, was selbstverständlich zu erheblich niedrigeren Investitionskosten führt.In recent years, increasing importance is given to paints which have to be cured in an inert gas atmosphere, for example under UV light, in order to prevent unwanted reactions with constituents of the normal atmosphere, in particular with oxygen (see, for example DE 100 51 109 C1 ). These novel coatings are characterized by a very high surface hardness and short polymerization times. The latter advantage is in paint shops, which are operated in a continuous cycle, directly into smaller plant lengths, which of course leads to significantly lower investment costs.

Während bei herkömmlichen Trocknern bzw. Trocknerverfahren, die mit Normalluft als Atmosphäre arbeiten, die Menge der Luft, die in den Trockner eingebracht und auch aus diesem wieder herausgeführt wird, aus Kostengründen von geringerer Bedeutung ist, muß bei Inertgasatmosphären auf einen möglichst geringen Verbrauch geachtet werden.While in conventional dryers or dryer processes that work with normal air as the atmosphere, the amount of air that is introduced into the dryer and also out of this is of lesser importance for cost reasons, must be paid in inert gas atmospheres on the lowest possible consumption ,

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der eingangs genannten Art so auszugestalten, daß sie mit möglichst wenig Inertgas betrieben werden kann.Object of the present invention is to provide a device of the type mentioned in such a way that it can be operated with as little inert gas.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Die Erfindung geht von der Überlegung aus, daß grundsätzlich um so weniger Inertgas benötigt wird, um so kleiner das Volumen ist, das von dem Inertgas ausgefüllt werden soll und umso weniger das Inertgas während des Betriebs verunreinigt wird. Die entsprechenden Kammern der Vorrichtung können aber nicht beliebig klein gemacht werden, da ja die Gegenstände in sie hinein bzw. durch sie hindurch befördert werden müssen. Die Erfindung fußt auf der Erkenntnis, daß gleichwohl eine weitere Einsparung an Inertgas erreicht werden kann. Eine bewegliche Begrenzungswand kann nämlich an den stehenden zu trocknenden Gegenstand näher herangebracht werden als eine stationäre Begrenzungswand, die überall mindestens denjenigen Abstand von dem Gegenstand einhalten muß, welcher dessen größten Dimension in der fraglichen Richtung entspricht.The invention is based on the consideration that basically the less inert gas is required, the smaller the volume that is to be filled by the inert gas and the less the inert gas is contaminated during operation. However, the corresponding chambers of the device can not be made arbitrarily small, since the objects must be transported into or through them. The invention is based on the recognition that nevertheless a further saving in inert gas can be achieved. Namely, a movable boundary wall can be brought closer to the standing object to be dried than a stationary boundary wall which must at least keep at least that distance from the object which corresponds to its largest dimension in the direction in question.

Die bewegliche Begrenzungswand sollte einen Auslaß aufweisen, über den das bei der Bewegung der Begrenzungswand auf den Gegenstand zu oder von diesem weg verdrängte Gas ausströmen kann.The movable boundary wall should have an outlet through which the gas displaced towards or away from the object when the boundary wall moves.

Besonders bevorzugt wird diejenige Ausgestaltung der erfindungsgemäßen Vorrichtung, bei welcher die bewegliche Begrenzungswand als Haube gestaltet ist, die durch eine im wesentlichen vertikale Bewegung über den Gegenstand stülpbar ist. Viele zu trocknende Gegenstände, insbesondere Fahrzeugkarosserien, haben nämlich eine verhältnismäßig unregelmäßige, nach oben weisende Kontur, während sie unten vergleichsweise flach sind. Durch eine Haube, die über die Oberseite der zu trocknenden Gegenstände gestülpt wird, läßt sich daher eine große Volumenreduzierung erzielen.Particularly preferred is the one embodiment of the device according to the invention, in which the movable boundary wall is designed as a hood which can be turned over the object by a substantially vertical movement. Many objects to be dried, in particular vehicle bodies, have a relatively irregular, upwardly pointing contour, while at the bottom they are comparatively flat. By a hood, which is placed over the top of the objects to be dried, therefore, a large volume reduction can be achieved.

Eine besonders geringe Verschleppung von Normalatmosphäre in die Trockenkammer wird mit derjenigen Ausführungsform der Erfindung erreicht, bei welcher in der Einlaßschleusenkammer eine bewegliche Begrenzungswand vorgesehen ist. Durch die Bewegung der Begrenzungswand auf den Gegenstand zu läßt sich nämlich eine große Menge der Normalatmosphäre, die mit dem Gegenstand in die Einlaßschleusenkammer eingebracht wurde, verdrängen, die dann nicht mehr gesondert weggespült zu werden braucht.A particularly low carry-over of normal atmosphere into the drying chamber is achieved with that embodiment of the invention in which a movable boundary wall is provided in the inlet lock chamber. By the movement of the boundary wall on the object to namely a large amount of the normal atmosphere, which was introduced with the article in the inlet lock chamber displace, which then no longer needs to be washed away separately.

Bei im Durchlauf betriebenen Trockenvorrichtungen ist zusätzlich eine Auslaßschleusenkammer vorgesehen, welche mindestens zeitweise mit der in der Trockenkammer vorliegenden Inertgasatmosphäre und mindestens zeitweise mit der Normalatmosphäre.kommuniziert. Aus denselben Gründen, die oben für die Einlaßschleusenkammer angegeben wurden, ist es zweckmäßig, wenn auch in der Auslaßschleusenkammer eine bewegliche Begrenzungswand vorgesehen ist.When operated in a continuous drying devices an outlet lock chamber is additionally provided, which communicates at least temporarily with the inert gas atmosphere present in the drying chamber and at least temporarily with the Normalatmosphäre.kommuniziert. For the same reasons given above for the inlet lock chamber, it is convenient, albeit in the outlet lock chamber a movable boundary wall is provided.

Ein Ausführungsbeispiel der Erfinndung wird nachfolgend anhand der Zeichnung näher erläutert; es zeigen

Figur 1
einen Ausschnitt aus einer Lackieranlage für Fahrzeugkarosserien im Vertikalschnitt;
Figuren 2 bis 6
den Anlagenausschnitt der Figur 1 in verschiedenen Betriebsphasen.
An embodiment of the Erfinndung will be explained in more detail with reference to the drawing; show it
FIG. 1
a section of a paint shop for vehicle bodies in vertical section;
FIGS. 2 to 6
the plant section of the FIG. 1 in different phases of operation.

In der Zeichnung ist ein Ausschnitt aus einer Lackieranlage dargestellt, der einen Vortrockner 204 und einen Haupttrockner 206 umfasst. Letzterer besitzt seinerseits eine Einlaßschleuse 207 und einen Trocknertunnel 208. Die Fahrzeugkarosserien 202 werden, in einer nicht dargestellten Spritzkabine frisch lackiert, mit Hilfe eines im einzelnen nicht gezeigten Fördersystems in den Figuren von links kommend in den Vortrockner 204 eingebracht und hier von einem Großteil des Lösemittels befreit. Von dort gelangen sie in die Einlaßschleuse 207, die dazu dient, die außerhalb des Haupttrockners 206, also auch im Vortrockner 204, herrschende Normalatmosphäre von einer Inertgasatmosphäre zu trennen, die in dem Haupttrockner 206 vorliegt. Nach dem Durchgang durch die unten näher beschriebene Einlaßschleuse 207 werden die Fahrzeugkarosserien 202 durch den mit Inertgas gefüllten und auf eine Temperatur zwischen 40°C und 150°C gebrachten Trockentunnel 208 bewegt, wobei der Lack ausgehärtet wird. Es schließt sich eine nicht dargestellte Auslaßschleuse an, die ähnlich wie die Einlaßschleuse 207 gebaut sein kann, jedoch umgekehrt durchlaufen wird.In the drawing, a section of a painting plant is shown, which includes a pre-dryer 204 and a main dryer 206. The latter in turn has an inlet lock 207 and a dryer tunnel 208. The vehicle bodies 202 are freshly painted in a spray booth, not shown, with the aid of a conveyor system, not shown in detail in the figures coming from the left into the pre-dryer 204 and here of a major part of the solvent freed. From there they enter the inlet lock 207, which serves to separate the outside of the main dryer 206, that is also in the pre-dryer 204, prevailing normal atmosphere of an inert gas atmosphere, which is present in the main dryer 206. After passing through the inlet lock 207 described in more detail below, the vehicle bodies 202 are moved through the drying tunnel 208 filled with inert gas and brought to a temperature between 40 ° C. and 150 ° C., whereby the paint is cured. It is followed by an outlet lock, not shown, which may be similar to the inlet lock 207 built, but is reversed.

Die Einlaßschleuse 207 besitzt ein Gehäuse 213, das in eine Einlaßkammer 214, ein Tauchbecken 219 und eine Auslaßkammer 215 unterteilt ist. Die Einlaßkammer 214 steht über eine Öffnung 216, die durch ein Rolltor 217 verschließbar ist, mit dem Vortrockner 204 in Verbindung. Die Auslaßkammer 215 kommuniziert über eine Öffnung 218, die ebenfalls ein Rolltor aufweisen kann, mit dem Trockentunnel 208. Die Einlaßkammer 214 ist im wesentlichen mit Normalatmosphäre, das Tauchbecken 219 mit einem Inertgas größerer Dichte und die Auslaßkammer 215 mit einem Inertgas kleinerer Dichte, vorzugsweise mit der Dichte und Temperatur des im Trocknertunnel 208 befindlichen Inertgases, gefüllt. Die Dichten sind dabei so gewählt, daß sich die Atmosphären in den verschiedenen Kammern 214, 215 und 219 der Einlaßschleuse 207 nur wenig vermischen.The inlet lock 207 has a housing 213, which in an inlet chamber 214, a dip tank 219 and an outlet chamber 215 is divided. The inlet chamber 214 communicates with the pre-dryer 204 via an opening 216, which is closable by a roller door 217. The outlet chamber 215 communicates with the drying tunnel 208 via an opening 218, which may also have a roller shutter. The inlet chamber 214 is substantially in normal atmosphere, the plenum 219 with an inert gas of greater density and the outlet chamber 215 with a smaller density inert gas, preferably with the density and temperature of the inert gas in the dryer tunnel 208 filled. The densities are chosen so that the atmospheres in the various chambers 214, 215 and 219 of the inlet lock 207 mix only slightly.

Der direkte Atmosphärenübertritt von der Einlaßkammer 214 zur Auslaßkammer 215 wird durch eine vertikale Trennwand 220 unterbunden, die sich nach unten bis etwas unterhalb des Bodenniveaus des Vortrockners 204 bzw. des Trockentunnels 208 erstreckt.The direct passage of the atmosphere from the inlet chamber 214 to the outlet chamber 215 is prevented by a vertical partition 220 which extends down to slightly below the bottom level of the pre-dryer 204 and the drying tunnel 208, respectively.

Ein Transfermechanismus, welcher die Fahrzeugkarosserien 202 durch die Einlaßschleuse 207 hindurchbewegt, umfasst zwei Hubtische 240, 241, mit denen jeweils eine Tragplattform 242, 243 vertikal nach oben und unten verfahren werden kann. Die Tragplattformen 242, 243 sind wiederum mit Fördersystemen versehen, welche mit den Fördersystemen im Vortrockner 204 bzw. im Trockentunnel 208 kompatibel sind.A transfer mechanism, which moves the vehicle bodies 202 through the inlet lock 207, comprises two lift tables 240, 241, with each of which a support platform 242, 243 can be moved vertically upwards and downwards. The support platforms 242, 243 are in turn provided with conveyor systems which are compatible with the conveyor systems in the pre-dryer 204 and in the drying tunnel 208.

In der Einlaßkammer 214 der Schleuse 207 ist eine Haube 244 vertikal beweglich angeordnet, deren Ränder mit den Wänden der Einlaßkammer 214 dicht abschließen. Die Kontur der Haube 244 ist der Kontur der Fahrzeugkarosserie 202 eng angepasst.In the inlet chamber 214 of the lock 207, a hood 244 is arranged vertically movable whose edges seal with the walls of the inlet chamber 214 tight. The contour of the hood 244 is the contour of the vehicle body 202 closely adjusted.

Die Fahrzeugkarosserien 202 werden durch die Einlaßschleuse 207 in folgender Weise hindurchbewegt:The vehicle bodies 202 are moved through the inlet lock 207 in the following manner:

Wie in Figur 1 gezeigt, wird die Fahrzeugkarosserie 202 aus dem Vortrockner 204 bei geöffnetem Rolltor 217 durch die Einlaßöffnung 216 in die Einlaßkammer 214 der Einlaßschleuse 207 eingeschoben und gelangt dabei auf die Tragplattform 242 des Hubtisches 240, die zu diesem Zwecke angehoben ist. Nun wird die Haube 244 von oben her abgesenkt und sehr nahe an die Fahrzeugkarosserie 202 herangeführt (Figur 2). Die zwischenliegende Luft wird dabei weitgehend über eine in der Haube 244 vorgesehene Auslaßklappe 260 nach außen verdrängt. Nunmehr kann noch innerhalb der Einlaßkammer 214 ein Spülen mit Inertgas erfolgen, das zu diesem Zweck über Düsen gegen die Fahrzeugkarosserie 202 gerichtet wird. Die Menge an Inertgas, die in diesem Zusammenhang benötigt wird, ist jedoch verhältnismäßig klein, da das zu spülende Volumen auf Grund der Haube 244 erheblich reduziert ist.As in FIG. 1 shown, the vehicle body 202 is inserted from the pre-dryer 204 with the roller door 217 open through the inlet opening 216 in the inlet chamber 214 of the inlet lock 207 and passes to the support platform 242 of the lifting table 240, which is raised for this purpose. Now, the hood 244 is lowered from above and brought very close to the vehicle body 202 ( FIG. 2 ). The intermediate air is largely displaced to the outside via an outlet flap 260 provided in the hood 244. Now can still take place within the inlet chamber 214, a purging with inert gas, which is directed for this purpose via nozzles against the vehicle body 202. However, the amount of inert gas needed in this context is relatively small, since the volume to be purged due to the hood 244 is significantly reduced.

Ist dieser erste Spülvorgang in der Einlaßkammer 214 abgeschlossen, wird die Tragplattform 242 des Hubtisches 240 abgesenkt, wie dies in Figur 3 dargestellt ist. Dabei taucht die Fahrzeugkarosserie 202 in das dichte Inertgas ein, welches sich im Tauchbecken 219 befindet. In der untersten, in Figur 3 dargestellten Position liegt die Tragplattform 242 des Hubtisches 240 in gleicher Höhe wie die Tragplattform 243 des benachbarten Hubtisches 241. Die Fahrzeugkarosserie 202 kann somit, wie sich aus Figur 4 ergibt, vom Hubtisch 240 auf den Hubtisch 241 übergeben werden. Im anschließenden Schritt wird die Tragplattform 243 des Hubtisches 241 so angehoben, daß das Fördersystem der Tragplattform 243 auf gleiche Höhe wie das Fördersystem innerhalb des Trockentunnels 208 gelangt. Die Fahrzeugkarosserie 202 wird bei diesem Vorgang in die Auslaßkammer 215 der Schleuse 207 gehoben, in welcher die heiße Inertgasatmosphäre vorliegt (vgl. Figur 5).When this first flushing operation in the inlet chamber 214 is completed, the support platform 242 of the lift table 240 is lowered as shown in FIG FIG. 3 is shown. In this case, the vehicle body 202 immersed in the dense inert gas, which is located in the dip tank 219. In the lowest, in FIG. 3 illustrated position, the support platform 242 of the lifting table 240 is at the same height as the support platform 243 of the adjacent lifting table 241. The vehicle body 202 can thus, as is apparent from FIG. 4 results are transferred from the lifting table 240 to the lifting table 241. In the subsequent step, the support platform 243 of the lifting table 241 is raised so that the conveyor system of the support platform 243 reaches the same height as the conveyor system within the drying tunnel 208. The vehicle body 202 is lifted in this process in the outlet chamber 215 of the lock 207, in which the hot inert gas atmosphere is present (see. FIG. 5 ).

In einem letzten Schritt schließlich wird die Fahrzeugkarosserie 202 im Sinne des Pfeiles der Figur 6 in den Trocknertunnel 208 ausgefahren. Gleichzeitig wird die Tragplattform 242 des Hubtisches 240 wieder angehoben. Auch die Haube 244 kehrt in ihre angehobene Position zurück, so daß die Einlaßkammer 214 der Einlaßschleuse 207 mit einer neuen Fahrzeugkarosserie 202 beschickt werden kann.Finally, in a final step, the vehicle body 202 in the direction of the arrow FIG. 6 extended into the dryer tunnel 208. At the same time, the support platform 242 of the lifting table 240 is raised again. Also, the hood 244 returns to its raised position, so that the inlet chamber 214 of the inlet lock 207 can be loaded with a new vehicle body 202.

Während des Anhebens der Haube 244 wird über die Auslaßklappe 260 ein Druckausgleich herbeigeführt.During the lifting of the hood 244, a pressure equalization is brought about via the outlet flap 260.

Claims (4)

  1. Device for drying objects, particularly painted vehicle bodies, with
    a) a drying chamber (208, 215, 219), whose interior is filled with an inert gas atmosphere;
    b) an inlet lock chamber (214), which is at least temporarily in contact with the standard atmosphere present outside this device and is at least temporarily in contact with the inert gas atmosphere present in the drying chamber (208, 215, 219);
    c) a conveyor system by which the objects (202) can be moved through the inlet lock chamber (214) into the drying chamber (208, 215, 219) and out again,
    characterised in that
    the inlet lock chamber (214) has a limiting wall (244), which is shaped to fit the object to be dried (202) and can be moved towards and away from the object (202) disposed in the inlet lock chamber (214).
  2. Device according to claim 1, characterised in that the movable limiting wall (244) has an outlet via which the gas that is compressed through the movement of the limiting wall (244) towards or away from the object (202) can flow out.
  3. Device according to claim 1 or 2, characterised in that the movable limiting wall (244) is designed as a hood, which can slide with a substantially vertical movement above the object (202).
  4. Device according to one of the aforementioned claims which additionally has an outlet lock chamber, which is at least temporarily in contact with the inert gas atmosphere present in the drying chamber (208, 215, 219) and is at least temporarily in contact with the standard atmosphere, characterised in that a movable limiting wall is arranged in the outlet lock chamber.
EP05739575A 2004-05-25 2005-05-12 Device for drying painted vehicle bodyworks Expired - Fee Related EP1749178B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410025526 DE102004025526B4 (en) 2004-05-25 2004-05-25 Device for drying objects, in particular painted vehicle bodies
PCT/EP2005/005132 WO2005116556A1 (en) 2004-05-25 2005-05-12 Device for drying painted vehicle bodyworks

Publications (2)

Publication Number Publication Date
EP1749178A1 EP1749178A1 (en) 2007-02-07
EP1749178B1 true EP1749178B1 (en) 2008-07-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05739575A Expired - Fee Related EP1749178B1 (en) 2004-05-25 2005-05-12 Device for drying painted vehicle bodyworks

Country Status (3)

Country Link
EP (1) EP1749178B1 (en)
DE (2) DE102004025526B4 (en)
WO (1) WO2005116556A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007478B3 (en) 2007-02-15 2008-05-29 Eisenmann Anlagenbau Gmbh & Co. Kg Article e.g. painted vehicle body, drying device, has inlet-lock and outlet-lock regions including locking chambers with units provided in position to change volume for displacing air contained in respective locking chamber
DE102007060104A1 (en) * 2007-12-13 2009-06-18 Eisenmann Anlagenbau Gmbh & Co. Kg Device for drying objects, in particular painted vehicle bodies
DE102008005584B3 (en) * 2008-01-22 2009-08-20 Eisenmann Anlagenbau Gmbh & Co. Kg Device for drying objects, in particular painted vehicle bodies
DE102010002179A1 (en) * 2010-02-22 2011-08-25 Dürr Systems GmbH, 74321 A lock for transferring a workpiece between an outer space and an inner space of a workpiece treatment area
DE102019004484A1 (en) 2019-06-27 2020-12-31 Wenker Gmbh & Co. Kg Modular chamber dryer system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683809B2 (en) * 1987-06-11 1994-10-26 株式会社大氣社 Paint baking device
NL9400639A (en) * 1994-04-21 1995-12-01 Rota Cab Bv Device and method in Spray booth for drying surfaces of water-based lacquers.
DE19503775C1 (en) * 1995-02-04 1996-03-14 Burkamp En Und Anlagentechnik Method of drying varnished objects i.e. vehicles by infra red radiators
GB9626965D0 (en) * 1996-12-27 1997-02-12 Pentara Commercial Enterprises Apparatus for drying paint
DE10051109C1 (en) * 2000-10-14 2002-04-25 Messer Griesheim Gmbh Hardening of coatings in an inert atmosphere using radiation, comprises using a tower construction with low parts entrance and exit, and a high irradiation source
CA2533524A1 (en) * 2003-07-24 2005-02-17 Eisenmann Maschinenbau Gmbh & Co. Kg Device for hardening the coating of an object, consisting of a material that hardens under electromagnetic radiation, more particularly an uv paint or a thermally hardening paint
DE102004023537B4 (en) * 2003-07-24 2007-12-27 Eisenmann Anlagenbau Gmbh & Co. Kg Apparatus for curing a coating of an article consisting of a material which cures under electromagnetic radiation, in particular from a UV varnish or from a thermosetting varnish
DE10354165B3 (en) * 2003-11-19 2004-11-04 EISENMANN Maschinenbau KG (Komplementär: Eisenmann-Stiftung) Paint coating hardening device, e.g. for automobile body panel, machine housing or furniture, has rinsing bath leading to upper hardening tunnel each filled with different protective gas

Also Published As

Publication number Publication date
DE102004025526B4 (en) 2006-04-13
EP1749178A1 (en) 2007-02-07
WO2005116556A1 (en) 2005-12-08
DE502005004896D1 (en) 2008-09-11
DE102004025526A1 (en) 2005-12-29

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