EP1749178A1 - Device for drying painted vehicle bodyworks - Google Patents

Device for drying painted vehicle bodyworks

Info

Publication number
EP1749178A1
EP1749178A1 EP05739575A EP05739575A EP1749178A1 EP 1749178 A1 EP1749178 A1 EP 1749178A1 EP 05739575 A EP05739575 A EP 05739575A EP 05739575 A EP05739575 A EP 05739575A EP 1749178 A1 EP1749178 A1 EP 1749178A1
Authority
EP
European Patent Office
Prior art keywords
chamber
inert gas
drying
boundary wall
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.)
Granted
Application number
EP05739575A
Other languages
German (de)
French (fr)
Other versions
EP1749178B1 (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
Original Assignee
Eisenmann Anlagenbau GmbH and Co KG
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 Eisenmann Anlagenbau GmbH and Co KG filed Critical Eisenmann Anlagenbau GmbH and Co KG
Publication of EP1749178A1 publication Critical patent/EP1749178A1/en
Application granted granted Critical
Publication of EP1749178B1 publication Critical patent/EP1749178B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

  • the invention relates to a device for drying objects, in particular painted vehicle bodies, with
  • a drying chamber the interior of which is filled with an inert gas atmosphere
  • an inlet lock chamber which communicates at least temporarily with the normal atmosphere present outside the device and at least temporarily with the inert gas atmosphere present in the drying chamber;
  • varnishes have become increasingly important, which have to be cured in an inert gas atmosphere, for example under UV light, in order to prevent undesired reactions with constituents of the normal atmosphere, in particular with oxygen.
  • inert gas atmosphere for example under UV light
  • These novel varnishes are distinguished by a very high surface hardness and due to short polymerization times. The latter advantage translates directly into shorter system lengths in painting systems that are operated continuously, which of course leads to significantly lower investment costs. While in conventional dryers or dryer processes that work with normal air as the atmosphere, the amount of air that is brought into and out of the dryer is of less importance for reasons of cost low consumption.
  • the object of the present invention is to design a device of the type mentioned in the introduction so that it can be operated with as little inert gas as possible.
  • At least one chamber has at least one boundary wall, which has a shape adapted to the object to be dried and can be moved towards and away from the object located in the chamber.
  • the invention is based on the consideration that, in principle, 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 cannot be made arbitrarily small, since the objects have to be conveyed into or through them.
  • the invention is based on the knowledge that a further saving in inert gas can nevertheless be achieved.
  • a movable boundary wall can namely be brought closer to the standing object to be dried than a stationary boundary wall, which everywhere must at least maintain the 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 toward or away from the object when the boundary wall moves can flow out.
  • the movable boundary wall is designed as a hood, which can be placed over the object by an essentially vertical movement.
  • Many objects to be dried in particular vehicle bodies, have a relatively irregular, upward-pointing contour, while they are comparatively flat at the bottom.
  • a hood, which is placed over the top of the objects to be dried, can therefore achieve a large volume reduction.
  • a particularly small carryover of normal atmosphere into the drying chamber is achieved with the embodiment of the invention in which a movable boundary wall is provided in the inlet lock chamber.
  • an outlet lock chamber is additionally provided which at least at times communicates with the inert gas atmosphere present in the drying chamber and at least at times from the normal atmosphere.
  • the outlet lock lower chamber a movable boundary wall is provided.
  • Figure 1 shows a detail from a painting system for vehicle bodies in vertical section
  • FIGS 2 to 6 the plant section of Figure 1 in different operating phases.
  • a section of a painting system which comprises 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, freshly painted in a spray booth, not shown, are brought into the pre-dryer 204 from the left with the aid of a conveyor system, not shown in detail, and here from a large part of the solvent freed. From there they enter the inlet lock 207, which serves to separate the normal atmosphere prevailing outside the main dryer 206, that is to say also in the pre-dryer 204, from 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., the paint being cured. This is followed by an outlet lock, not shown, which can be constructed similarly to the inlet lock 207, but is reversed.
  • the inlet lock 207 has a housing 213, which in an inlet chamber 214, a plunge pool 219 and an outlet chamber 215 is divided.
  • the inlet chamber 214 is connected to the pre-dryer 204 via an opening 216 which can be closed by a roller door 217.
  • the outlet chamber 215 communicates with the drying tunnel 208 via an opening 218, which can also have a roller door.
  • the inlet chamber 214 is essentially in a normal atmosphere, the plunge pool 219 with an inert gas of higher density and the outlet chamber with an inert gas of lower density, preferably with the Density and temperature of the inert gas in the drying tunnel 208, filled.
  • the densities are chosen so that the atmospheres in the various chambers 214, 215 and 219 of the inlet lock 207 only mix slightly.
  • the direct atmosphere transfer from the inlet chamber 214 to the outlet chamber 215 is prevented by a vertical partition wall 222, which extends down to slightly below the floor level of the pre-dryer 204 or the drying tunnel 208.
  • a transfer mechanism which moves the vehicle body series 202 through the inlet lock 207, comprises two lifting tables 240, 241, with each of which a support platform 242, 243 can be moved vertically up and down.
  • the support platforms 242, 243 are in turn provided with conveyor systems which are compatible with the conveyor systems in the pre-dryer 204 or in the drying tunnel 208.
  • a hood 244 is arranged to be vertically movable, the edges of which close tightly with the walls of the inlet chamber 214.
  • the contour of the hood 244 is the contour of the vehicle body rie 202 closely adapted.
  • the vehicle bodies 202 are moved through the inlet lock 207 in the following manner:
  • the vehicle body As shown in Figure 1, the vehicle body
  • the hood 244 is lowered from above and brought very close to the vehicle body series 202 (FIG. 2).
  • the intermediate air is largely displaced to the outside via an outlet flap 260 provided in the hood 244.
  • purging with inert gas can take place within the inlet chamber 215, which is directed against the vehicle body 202 via nozzles for this purpose.
  • the amount of inert gas required in this connection is relatively small, since the volume to be flushed is considerably reduced due to the hood 244.
  • the traq platform 242 of the lifting table 240 is lowered, as shown in FIG. 3.
  • the vehicle body 202 is immersed in the dense inert gas which is located in the plunge pool 219.
  • the support platform 242 of the lifting table 240 lies at the same height as the support platform 243 of the adjacent lifting table 241.
  • the vehicle body 202 can thus, as can be seen from FIG. 4, be 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 level as the conveyor system within the drying tunnel 208.
  • the vehicle body 202 is lifted into the outlet chamber 215 of the lock 207, in which the hot inert gas atmosphere is present (cf. FIG. 5).
  • the vehicle body 202 is extended into the dryer tunnel 208 in the direction of the arrow in FIG. 6.
  • the support platform 242 of the lifting table 240 is raised again.
  • the hood 244 also returns to its raised position so that the inlet chamber 214 of the inlet lock 207 can be charged with a new vehicle body 202.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention relates to a device for drying objects (202), especially painted vehicle bodyworks, comprising a drying chamber (208) whose inner space is filled with an inert gas atmosphere. One inlet lock chamber (214) is at least temporarily connected to the normal atmosphere prevailing outside the device and at least temporarily to the inert gas atmosphere prevailing in the drying chamber (208). A conveyor system moves the objects (202) through the inlet lock chamber (214) into the drying chamber (208) and out of said drying chamber. At least one chamber (214) has at least one limiting wall (244) that has a form matching the object (202) to be dried that can be moved towards and away from the object (202) located on the chamber (214). This makes it possible to keep to a minimum the amount of the relatively expensive inert gas that is needed to operate the device.

Description

VORRICHTUNG ZUM TROCKNEN VON LACKIERTEN FAHRZEUGKAROSSERIEN DEVICE FOR DRYING PAINTED VEHICLE BODIES
Die Erfindung betrifft eine Vorrichtung zum Trocknen von Gegenständen, insbesondere von lackierten Fahrzeugkarosserien, mitThe invention relates to a device for drying objects, in particular painted vehicle bodies, with
a) einer Trockenkammer, deren Innenraum mit einer Inertgasatmosphare gefüllt ist;a) a drying chamber, the interior of which is filled with an inert gas atmosphere;
b) einer Einlaßschleusenkammer, welche zumindest zeit- weise mit der außerhalb der Vorrichtung vorliegenden Normalatmosphäre und zumindest zeitweise mit der in der Trockenkammer vorliegenden Inertgasatmosphare kommuniziert;b) an inlet lock chamber which communicates at least temporarily with the normal atmosphere present outside the device and at least temporarily with the inert gas atmosphere present in the drying chamber;
c) einem Fördersystem, mit dem die Gegenstände durch die Einlaßschleusenkammer in die Trockenkammer und wieder aus dieser herausbewegt werden können.c) a conveyor system with which the objects can be moved through the inlet lock chamber into and out of the drying chamber.
In jüngster Zeit gewinnen zunehmend Lacke Bedeutung, die in einer Inertgasatmosphare zum Beispiel unter UV- Licht ausgehärtet werden müssen, um unerwünschte Reaktionen mit Bestandteilen der normalen Atmosphäre, insbesondere mit Sauerstoff, zu verhindern.- 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. 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 Ko- stengründen von geringerer Bedeutung ist, muß bei Inert- gasatmosphären auf einen möglichst geringen Verbrauch geachtet werden.Recently, varnishes have become increasingly important, which have to be cured in an inert gas atmosphere, for example under UV light, in order to prevent undesired reactions with constituents of the normal atmosphere, in particular with oxygen. These novel varnishes are distinguished by a very high surface hardness and due to short polymerization times. The latter advantage translates directly into shorter system lengths in painting systems that are operated continuously, which of course leads to significantly lower investment costs. While in conventional dryers or dryer processes that work with normal air as the atmosphere, the amount of air that is brought into and out of the dryer is of less importance for reasons of cost low consumption.
Aufgabe der vorliegenden Erfindung ist es, eine Vor- richtung der eingangs genannten Art so auszugestalten, daß sie mit möglichst wenig Inertgas betrieben werden kann.The object of the present invention is to design a device of the type mentioned in the introduction so that it can be operated with as little inert gas as possible.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daßThis object is achieved in that
mindestens eine Kammer mindestens eine Begrenzungswand aufweist, die eine dem zu trocknenden Gegenstand ange- passte Form besitzt und auf den in der Kammer befindlichen Gegenstand zu und von diesem weg bewegbar ist.at least one chamber has at least one boundary wall, which has a shape adapted to the object to be dried and can be moved towards and away from the object located in the chamber.
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 Begrenzungs- wand 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 größ- ten Dimension in der fraglichen Richtung entspricht. 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 invention is based on the consideration that, in principle, 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 cannot be made arbitrarily small, since the objects have to be conveyed into or through them. The invention is based on the knowledge that a further saving in inert gas can nevertheless be achieved. A movable boundary wall can namely be brought closer to the standing object to be dried than a stationary boundary wall, which everywhere must at least maintain the 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 toward or away from the object when the boundary wall moves can flow out.
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 embodiment of the device according to the invention in which the movable boundary wall is designed as a hood, which can be placed over the object by an essentially vertical movement. Many objects to be dried, in particular vehicle bodies, have a relatively irregular, upward-pointing contour, while they are comparatively flat at the bottom. A hood, which is placed over the top of the objects to be dried, can therefore achieve a large volume reduction.
Eine besonders geringe Verschleppung von Normalatmos- phäre in die Trockenkammer wird mit derjenigen Aus- führungsform der Erfindung erreicht, bei welcher in der Einlaßschleusenkammer eine bewegliche Begrenzungs- wand vorgesehen ist. Durch die Bewegung der Begrenzungswand auf den Gegenstand zu läßt sich nämlich eine große Menge der Normalatmosphare, die mit dem Gegenstand in die Einlaßschleusenkammer eingebracht wurde, verdrängen, die dann nicht mehr gesondert weggespült zu werden braucht.A particularly small carryover of normal atmosphere into the drying chamber is achieved with the embodiment of the invention in which a movable boundary wall is provided in the inlet lock chamber. By moving the boundary wall towards the object, a large amount of the normal atmosphere that was introduced into the inlet lock chamber with the object can be displaced, 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 Inertgasatmosphare und mindestens zeitweise mit der Normalatmosphare .kommuniziert . Aus denselben Gründen, die oben für die Einlaßschleusenkammer angegeben wurden, ist es zweckmäßig, wenn auch in der Auslaßschleu- senkammer eine bewegliche Begrenzungswand vorgesehen ist .In the case of drying devices operated in a continuous manner, an outlet lock chamber is additionally provided which at least at times communicates with the inert gas atmosphere present in the drying chamber and at least at times from the normal atmosphere. For the same reasons given above for the inlet lock chamber, it is expedient if the outlet lock lower chamber a movable boundary wall is provided.
Ein Ausführungsbeispiel der Erfinndung wird nachfolgend anhand der Zeichnung näher erläutert; es zeigenAn embodiment of the invention is explained below with reference to the drawing; show it
Figur 1 einen Ausschnitt aus einer Lackieranlage für Fahrzeugkarosserien im Vertikalschnitt;Figure 1 shows a detail from a painting system for vehicle bodies in vertical section;
Figuren 2 bis 6 den Anlagenausschnitt der Figur 1 in verschiedenen Betriebsphasen.Figures 2 to 6 the plant section of Figure 1 in different operating phases.
In der Zeichnung ist ein Ausschnitt aus einer Lackieranlage dargestellt, der einen Vortrockner 204 und einen Haupt- trockner 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 Normalatmosphare von einer Inertgasatmosphare 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 system is shown, which comprises 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, freshly painted in a spray booth, not shown, are brought into the pre-dryer 204 from the left with the aid of a conveyor system, not shown in detail, and here from a large part of the solvent freed. From there they enter the inlet lock 207, which serves to separate the normal atmosphere prevailing outside the main dryer 206, that is to say also in the pre-dryer 204, from 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., the paint being cured. This is followed by an outlet lock, not shown, which can be constructed similarly to the inlet lock 207, 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 Verbin- düng. 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 Normalatmosphare, das Tauchbecken 219 mit einem Inertgas größerer Dichte und die Auslaßkammer 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 plunge pool 219 and an outlet chamber 215 is divided. The inlet chamber 214 is connected to the pre-dryer 204 via an opening 216 which can be closed by a roller door 217. The outlet chamber 215 communicates with the drying tunnel 208 via an opening 218, which can also have a roller door. The inlet chamber 214 is essentially in a normal atmosphere, the plunge pool 219 with an inert gas of higher density and the outlet chamber with an inert gas of lower density, preferably with the Density and temperature of the inert gas in the drying tunnel 208, filled. The densities are chosen so that the atmospheres in the various chambers 214, 215 and 219 of the inlet lock 207 only mix slightly.
Der direkte Atmosphärenübertritt von der Einlaßkammer 214 zur Auslaßkammer 215 wird durch eine vertikale Trennwand 222 unterbunden, die sich nach unten bis etwas unterhalb des Bodenniveaus des Vortrockners 204 bzw. des Trockentunnels 208 erstreckt.The direct atmosphere transfer from the inlet chamber 214 to the outlet chamber 215 is prevented by a vertical partition wall 222, which extends down to slightly below the floor level of the pre-dryer 204 or the drying tunnel 208.
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 body series 202 through the inlet lock 207, comprises two lifting tables 240, 241, with each of which a support platform 242, 243 can be moved vertically up and down. The support platforms 242, 243 are in turn provided with conveyor systems which are compatible with the conveyor systems in the pre-dryer 204 or 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 Fahrzeugkarosse- rie 202 eng angepasst.In the inlet chamber 214 of the lock 207, a hood 244 is arranged to be vertically movable, the edges of which close tightly with the walls of the inlet chamber 214. The contour of the hood 244 is the contour of the vehicle body rie 202 closely adapted.
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 FahrzeugkarosserieAs shown in Figure 1, the vehicle body
202 aus dem Vortrockner 204 bei geöffnetem Rolltor 217 durch die Einlaßöffnung 216 in die Ξinlaßkammer 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 vorge- sehene Auslaßklappe 260 nach außen verdrängt. Nunmehr kann noch innerhalb der Einlaßkammer 215 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.202 pushed out of the pre-dryer 204 with the roller door 217 open through the inlet opening 216 into the inlet chamber 214 of the inlet lock 207 and thereby reaches 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 series 202 (FIG. 2). The intermediate air is largely displaced to the outside via an outlet flap 260 provided in the hood 244. Now, purging with inert gas can take place within the inlet chamber 215, which is directed against the vehicle body 202 via nozzles for this purpose. However, the amount of inert gas required in this connection is relatively small, since the volume to be flushed is considerably reduced due to the hood 244.
Ist dieser erste Spülvorgang in der Einlaßkammer 214 abgeschlossen, wird die Traqplattform 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 6c 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 In- ertgasatmosphäre vorliegt (vgl. Figur 5) .When this first flushing process in the inlet chamber 214 is completed, the traq platform 242 of the lifting table 240 is lowered, as shown in FIG. 3. The vehicle body 202 is immersed in the dense inert gas which is located in the plunge pool 219. In the lowest position shown in FIG. 6c, the support platform 242 of the lifting table 240 lies at the same height as the support platform 243 of the adjacent lifting table 241. The vehicle body 202 can thus, as can be seen from FIG. 4, be 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 level as the conveyor system within the drying tunnel 208. During this process, the vehicle body 202 is lifted into the outlet chamber 215 of the lock 207, in which the hot inert gas atmosphere is present (cf. 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 last step, the vehicle body 202 is extended into the dryer tunnel 208 in the direction of the arrow in FIG. 6. At the same time, the support platform 242 of the lifting table 240 is raised again. The hood 244 also returns to its raised position so that the inlet chamber 214 of the inlet lock 207 can be charged 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, pressure equalization is brought about via the outlet flap 260.

Claims

Patentansprüche claims
1. Vorrichtung zum Trocknen von Gegenständen, insbesondere von lackierten Fahrzeugkarosserien, mit1. Device for drying objects, in particular painted vehicle bodies, with
a) einer Trockenkammer, deren Innenraum mit einer Inert- gasatmosphäre gefüllt ist;a) a drying chamber, the interior of which is filled with an inert gas atmosphere;
b) einer Einlaßschleusenkammer, welche zumindest zeitweise mit der außerhalb der Vorrichtung vorliegenden Normalatmosphäre und zumindest zeitweise mit der in der Trockenkammer vorliegenden Inertgasatmosphare kommuniziert;b) an inlet lock chamber which communicates at least temporarily with the normal atmosphere present outside the device and at least temporarily with the inert gas atmosphere present in the drying chamber;
c) einem Fδrdersystem, mit dem die Gegenstände durch die Einlaßschleusenkammer in die Trockenkammer und wieder aus dieser heraus bewegt werden können,c) a conveyor system with which the objects can be moved through the inlet lock chamber into and out of the drying chamber,
dadurch gekennzeichnet, daßcharacterized in that
mindestens eine Kammer (214) mindestens eine Begren- zungswand (244) aufweist, die eine dem zu trocknenden Gegenstand (202) angepasste Form besitzt und auf den in der Kammer (214) befindlichen Gegenstand (202) zu und von diesem weg bewegbar ist.at least one chamber (214) has at least one boundary wall (244) which has a shape adapted to the object (202) to be dried and can be moved towards and away from the object (202) located in the chamber (214).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die bewegliche Begrenzungswand (244) einen Auslaß (260) aufweist, über den das bei der Bewegung der Begrenzungswand (244) auf den Gegenstand (202) zu oder von diesem weg verdrängte Gas ausströmen kann. 2. Device according to claim 1, characterized in that the movable boundary wall (244) has an outlet (260) through which the gas displaced during the movement of the boundary wall (244) on the object (202) to or from this gas can flow out ,
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die bewegliche Begrenzungswand (244) als Haube gestaltet ist, die durch eine im wesentlichen vertikale Bewegung über den Gegenstand (202) stülpbar ist.3. Apparatus according to claim 1 or 2, characterized in that the movable boundary wall (244) is designed as a hood which can be placed over the object (202) by a substantially vertical movement.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Einlaßschleusenkammer (114) eine bewegliche Begrenzungswand (244) vor- gesehen ist.4. Device according to one of the preceding claims, characterized in that a movable boundary wall (244) is provided in the inlet lock chamber (114).
5. Vorrichtung nach einem der vorhergehenden Ansprüche, die zusätzlich eine Auslaßschleusenkammer aufweist, welche mindestens zeitweise mit der in der Trockenkammer vorliegenden Inertgasatmosphare und mindestens zeitweise mit der Normalatmosphare kommuniziert, dadurch gekennzeichnet , daß in der Auslaßschleusenkammer eine bewegliche Begrenzungswand vorgesehen ist. 5. Device according to one of the preceding claims, which additionally has an outlet lock chamber which communicates at least at times with the inert gas atmosphere present in the drying chamber and at least at times with the normal atmosphere, characterized in that a movable boundary wall is provided 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 true EP1749178A1 (en) 2007-02-07
EP1749178B1 EP1749178B1 (en) 2008-07-30

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EP05739575A Expired - Fee Related EP1749178B1 (en) 2004-05-25 2005-05-12 Device for drying painted vehicle bodyworks

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

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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

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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
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
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
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Also Published As

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WO2005116556A1 (en) 2005-12-08
DE102004025526A1 (en) 2005-12-29
DE102004025526B4 (en) 2006-04-13
EP1749178B1 (en) 2008-07-30
DE502005004896D1 (en) 2008-09-11

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