DE2952391C2 - Method and device for removing paint residues that have adhered to the spray carriage during spray painting of objects - Google Patents
Method and device for removing paint residues that have adhered to the spray carriage during spray painting of objectsInfo
- Publication number
- DE2952391C2 DE2952391C2 DE2952391A DE2952391A DE2952391C2 DE 2952391 C2 DE2952391 C2 DE 2952391C2 DE 2952391 A DE2952391 A DE 2952391A DE 2952391 A DE2952391 A DE 2952391A DE 2952391 C2 DE2952391 C2 DE 2952391C2
- Authority
- DE
- Germany
- Prior art keywords
- spray
- paint
- objects
- adhered
- paint residues
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/42—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths using electrostatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Description
Gegenstand der Erfindung ist ein Verfahren und eine Vorrichtung zum Entfernen von beim Spritzlackieren von Gegenständen, z. B. Automobilkarosserien, am Spritzschlitten haftengebliebenen Lackresten.The invention relates to a method and a device for removing paint during spray painting of objects, e.g. B. automobile bodies, on the spray carriage stuck paint residues.
In fast allen europäischen Automobilfabriken werden die Karosserien auf bewegliche Vorrichtungen (Spritzschlitten) gespannt und so mittels Förderkette durch die Lackierkabinen gezogen. Diese Spritzschlitten werden in einem Kreislauf mit immer wieder neuen Karosserien durch die Lackierkabinen gezogen und erhalten auf diese Weise einen unerwünschten Lacküberzug, der sich mit jedem Durchgang vergrößert und letztlich die Funktionsweise des Schlittens beeinträchtigt. Es ist daher erforderlich, diese Spritzschlitten in kurzen Zeitabständen zu entlacken.In almost all European automobile factories, the bodies are placed on movable devices (injection slides) stretched and pulled through the paint booth by means of a conveyor chain. These spray slides are in a cycle with constantly new bodies being pulled through the paint booth and kept up This creates an undesirable coating of varnish, which increases with each pass and ultimately the Functionality of the slide impaired. It is therefore necessary to have this spray carriage in short To remove paint at intervals.
Bisher geschieht dies in folgenden Formen:So far this has been done in the following forms:
4040
Chemisches Lösen
Die Schlitten werden in einer chemischen Lösung abgekocht. Dies hat den Nachteil hoher Energiekosten
und eines hohen Zeitaufwandes (15 bis 20 Stunden).Chemical dissolving
The sleds are boiled in a chemical solution. This has the disadvantage of high energy costs and a high expenditure of time (15 to 20 hours).
Darüber hinaus lassen sich die häufig verwendeten Zweikomponentenlacke mit diesem Verfahren nicht entfernen.In addition, the frequently used two-component paints can be applied with this process do not remove.
2. Pyrolyse2. Pyrolysis
Der Lacküberzug auf den Schlitten wird abgebrannt. Dies bringt aufgrund der immer strengeren Umweltbestimmungen Probleme mit sich.The lacquer coating on the slide is burned off. This brings about because of the increasingly strict Environmental problems with themselves.
3. Kaltentlackung3. Cold paint stripping
Dies ist das häufigste Verfahren. Unter Verwendung von Methylenchlorid werden die Schlitten in Bäder getaucht, und während der Dauer von ca. 12 Stunden wird der anhaftende Lack durch das Lösungsmittel, Methylenchlorid, gelöst und entfernt. This is the most common practice. Using methylene chloride, the sleds are in Baths, and for a period of approx. 12 hours, the adhering paint is absorbed by the Solvent, methylene chloride, dissolved and removed.
6060
Dieses Verfahren hat jedoch folgende Nachteile:However, this method has the following disadvantages:
— Methylenchlorid gehört zu der Gruppe der gefährlichen Arbeitsstoffe, und ist daher nur bei Beachtung aller behördlichen Auflagen hinsichtlich Umweltschutz verwendbar.- Methylene chloride belongs to the group of dangerous working substances, and is therefore only at Compliance with all official requirements regarding environmental protection can be used.
— Während der Entlackung tauchen die aus Kastenprofilen hergestellten Lackierschlitten stundenlang in dieses Lösungsmittel. Es ist daher nicht zu vermeiden, daß Methyienchlorid durch die Poren und Öffnungen in die Hohlräume der Profile gelangt und Korrosionsangriffe verursacht — Häufig ist es erforderlich, diese ca. 8000 mm langen und 1500 mm breiten Lackierschlitten zu richten. Sobald dies warm mittels Schweißbrenner geschieht, zersetzt sich das Methylenchlorid in Phosgen und andere äußerst gesundheitsschädliche Stoffe und bildet daher eine erhebliche Gefahr für das InstandsetzungspersonaL- During the paint stripping process, the painting slides made from box profiles dip for hours in this solvent. It is therefore unavoidable that methylene chloride through the pores and openings get into the cavities of the profiles and cause corrosion attacks - It is often necessary to straighten these approx. 8000 mm long and 1500 mm wide painting slides. As soon as this is done warm using a welding torch, the methylene chloride decomposes into Phosgene and other extremely harmful substances and therefore forms a significant risk for the maintenance staff
Aus der DE-AS 25 52 611 war es bekannt, mittels Druckwasser Schmutz-, Leimfarben- und Binderfarbenschichten von Decken und Wänden zu entfernen und Tapeten abzulösen. Solche Schichten haben verhältnismäßig geringe Haftung auf dem Putzuntergrund. Vielfach haben sich alte Schichten bereits vom Untergrund gelöst und können mechanisch mittels eines Spachtels oder nach dem Vorschlag gemäß DE-AS 25 52 611 mit einem Flachstrahl losgelöst werden. Das Entfernen von Farbschichten von großen Flächen ist relativ einfach, weil Schichten plakatweise abgelöst werden können. Spritzlackrest auf unregelmäßigen Oberflächen, insbesondere von Spritzschlitten, an denen sich Spritzlackrestschichten regelrecht verkrallen und verankern können, sind sehr viel hartnäckiger und ohne weiteres nach der bekannten Art gemäß DE-AS 25 52 611 nicht abzubekommen.From DE-AS 25 52 611 it was known by means of Pressurized water to remove layers of dirt, glue and binder paint from ceilings and walls and To peel off wallpaper. Such layers have relatively little adhesion to the plaster substrate. In many cases, old layers have already loosened from the substrate and can be mechanically removed using a Spatula or according to the proposal according to DE-AS 25 52 611 can be detached with a flat jet. That Removing layers of paint from large areas is relatively easy because layers are peeled off on a poster-by-poster basis can be. Spray paint residue on irregular surfaces, especially from spray slides on which Residual spray paint layers can literally claw and anchor themselves are much more stubborn and without further according to the known type according to DE-AS 25 52 611 not to be obtained.
Es war daher nicht zu erwarten, daß nach der aus der DE-AS 25 52 611 bekannten Methode Spritzlack, der eine viel stärkere Haftfestigkeit auf dem Untergrund besitzt als Leim- oder Binderfarbenschichten, entfernt werden kann.It was therefore not to be expected that after the method known from DE-AS 25 52 611 spray paint, the has a much stronger adhesion to the substrate than layers of glue or binder paint, removed can be.
Aufgabe der vorliegenden Erfindung ist nun die Schaffung eines Verfahrens und einer Vorrichtung, die ein einfaches schnelles und problemloses Ablösen von Lackresten auf Lackierschlitten ermöglichtThe object of the present invention is now to provide a method and an apparatus which enables easy, fast and problem-free removal of paint residues on painting slides
Zur Lösung dieser Aufgabe werden die in den Ansprüchen gekennzeichneten Maßnahmen vorgeschlagen. To solve this problem, the measures characterized in the claims are proposed.
Versuche haben ergeben, daß eine Entlackung des Lackierschlittens mit hochgespanntem reinem Wasser die schnellstmögliche und umweltfreundlichste Lösung darstellt.Tests have shown that paint stripping of the painting slide with high-tension pure water represents the fastest possible and most environmentally friendly solution.
Die kinetische Energie des Wassers bewirkt, daß sich die Lackschichten in kurzer Zeit lösen und von einem Kratzbandförderer am Boden der Kabine automatisch ausgetragen werden können. Das einmal vorhandene Brauchwasser wird über Filter immer wieder der Hochdruckpumpe zugeführt, so daß ein vollkommenes Recycling ermöglicht wird.The kinetic energy of the water causes the paint layers to peel off in a short time and from one Scraper belt conveyor on the floor of the cabin can be automatically discharged. The once existing Process water is repeatedly fed to the high-pressure pump via filters, so that a perfect Recycling is made possible.
Die durchgeführten Versuche haben ergeben, daß nach dem erfindungsgemäßen Verfahren ein Lackierschlitten in weniger als 30 Minuten metallisch blank gereinigt werden kann. Bisher benötigte ein Mitarbeiter einen Tag, um einen Schlitten von Hand mit Spachtel und Hammer zu reinigen bzw. waren mindestens 12 Stunden erforderlich um mit chemischen Lösungsmitteln bzw. Kaltentlacken mit karcinogen verdächtigen Lösungsmitteln das Entlacken durchzuführen.The tests carried out have shown that according to the method according to the invention, a painting slide can be cleaned to a bare metal in less than 30 minutes. Previously needed one employee a day to clean a sled by hand with a spatula and hammer or at least were 12 hours required to suspect carcinogen with chemical solvents or cold paint stripping Solvents to perform the paint stripping.
Anhand des in der Zeichnung schematisch dargestellten Ausführungsbeispiels wird die Erfindung näher erläutert. In die Kabine 1 wird der zu reinigende Spritzschlitten 2 auf einer Rollenführung 3 hereingerollt. Mit dieser Rollenführung 3 kann das den Vorgang durch das Fenster 4 beobachtende Bedienungspersonal den zu reinigenden Spritzschlitten 2 an der Hochdruckdüse 5The invention is explained in more detail with the aid of the exemplary embodiment shown schematically in the drawing explained. The spray carriage 2 to be cleaned is rolled into the booth 1 on a roller guide 3. With this roller guide 3, the operator observing the process through the window 4 can cleaning spray carriage 2 on the high pressure nozzle 5
gesteuert vorbeiführen. Dabei kann der Spntzschlitten 2 und/oder die Düse 5 reversierbar geführt werden. Die Hochdruckdüse 5 ist wegen der auftretenden großen Rückstoßkräfte mit einem Manipulator 9 verbunden, der eine leichte und genaue Führung der Düse ermöglicht.guided past in a controlled manner. The cutting slide 2 and / or the nozzle 5 can be guided in a reversible manner. the High pressure nozzle 5 is connected to a manipulator 9 because of the large recoil forces that occur, which enables easy and precise guidance of the nozzle.
Der abgespritzte Lack wird durch einen am Kabinenboden liegenden Kratzbandförderer 6 in den Container 7 transportiert. Ein Luftwäscher 8 saugt den beim Arbeiten entstehenden Wassemebel ab und führt das Wasser dem Kreislauf wieder zu.The sprayed-off paint is fed into the by a scraper belt conveyor 6 located on the booth floor Container 7 transported. An air washer 8 sucks off the water mist that occurs during work and guides it the water back into the cycle.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2952391A DE2952391C2 (en) | 1979-12-24 | 1979-12-24 | Method and device for removing paint residues that have adhered to the spray carriage during spray painting of objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2952391A DE2952391C2 (en) | 1979-12-24 | 1979-12-24 | Method and device for removing paint residues that have adhered to the spray carriage during spray painting of objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2952391A1 DE2952391A1 (en) | 1981-09-24 |
| DE2952391C2 true DE2952391C2 (en) | 1983-12-01 |
Family
ID=6089698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2952391A Expired DE2952391C2 (en) | 1979-12-24 | 1979-12-24 | Method and device for removing paint residues that have adhered to the spray carriage during spray painting of objects |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2952391C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HUT63102A (en) * | 1990-08-11 | 1993-07-28 | Deutsche Lufthansa | Method for removing paint coatings from surfaces |
| DE4041307A1 (en) * | 1990-12-21 | 1992-06-25 | Linde Ag | METHOD FOR DE-PAINTING WORKPIECES |
| DE102006000658A1 (en) * | 2006-01-03 | 2007-07-05 | Volkswagen Ag | Vehicle body surface treatment method, involves cleaning contact surface of receiver of locking mechanism of chassis body locking mechanism by removal of coating material using mechanical medium e.g. brush or ultrasonic |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1621565A1 (en) * | 1967-07-19 | 1971-05-13 | Duerr O Fa | Method and device for cleaning gratings in paint spraying systems |
| DE2552611C2 (en) * | 1975-11-24 | 1977-05-12 | Hutterer, Peter, 8000 München | Device for removing old layers of dirt, glue paint and binder paint from ceilings and walls, as well as removing wallpaper |
-
1979
- 1979-12-24 DE DE2952391A patent/DE2952391C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2952391A1 (en) | 1981-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation |