EP2150762B1 - Installation de revêtement - Google Patents

Installation de revêtement Download PDF

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Publication number
EP2150762B1
EP2150762B1 EP08749128.8A EP08749128A EP2150762B1 EP 2150762 B1 EP2150762 B1 EP 2150762B1 EP 08749128 A EP08749128 A EP 08749128A EP 2150762 B1 EP2150762 B1 EP 2150762B1
Authority
EP
European Patent Office
Prior art keywords
workpieces
preheating
conveyor
coating plant
plant according
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.)
Not-in-force
Application number
EP08749128.8A
Other languages
German (de)
English (en)
Other versions
EP2150762A1 (fr
Inventor
Gerd Wurster
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2150762A1 publication Critical patent/EP2150762A1/fr
Application granted granted Critical
Publication of EP2150762B1 publication Critical patent/EP2150762B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B05D3/02—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 by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • 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
    • F26B15/12—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 the lines being all horizontal or slightly inclined
    • F26B15/14—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 the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0264—Overhead conveying means, i.e. the object or other work being suspended from the conveying means; Details thereof, e.g. hanging hooks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • 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
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders

Definitions

  • the invention relates to a coating system for painting or powder coating of workpieces, with a conveyor for conveying workpieces through at least one station designed as a dryer, in which the workpieces are heated, the dryer has a treatment chamber and a separate preheating chamber.
  • Such a coating plant according to the preamble of claim 1 with such a dryer is known from US 5,136,971 A known.
  • the workpieces first pass into a preheating zone by means of a conveyor and are then guided through a treatment chamber arranged therebelow, which is separated from the preheating chamber by a separating plate.
  • the preheat chamber and the treatment chamber have suitable heaters to maintain a certain temperature in the preheat chamber and in the treatment chamber.
  • a similar arrangement is from the GB 2 001 746 A known. Again, the workpieces are first passed through a preheating chamber and then get into an arranged below, spatially separate curing chamber. To Passing through the curing chamber finally reach the workpieces in a spatially separate cooling chamber.
  • the invention has the object to improve a coating system according to the aforementioned type such that the most efficient use of energy is guaranteed.
  • the conveyor in the preheating chamber has a preheating zone with two superimposed sections having an upper portion and a lower portion, and that the conveyor runs such that in the dryer incoming workpieces are moved in the preheating for preheating by the upper portion above the lower portion are moved by the expiring from the dryer, already heated workpieces from the treatment chamber.
  • a particularly effective preheating of the workpieces is achieved in the preheating by such workpieces that have previously passed through the treatment chamber and thus have a significantly higher temperature than the workpieces in the preheating zone.
  • the workpieces to be heated are moved in the opposite direction to the already warm workpieces.
  • the coating installation has at least one burner whose exhaust gases are supplied to the preheating workpieces in the preheating zone for heating.
  • the preheating zone is separated from a treatment chamber of the station by sealing air.
  • a heat exchanger which uses waste heat to heat a clean air flow, which is passed into the station.
  • the clean air heated by the heat exchanger is supplied as sealing air between the preheating zone and the treatment chamber.
  • a particularly energy-saving shielding of the treatment chamber against aggressive components of burner exhaust gases is ensured.
  • both the energy of the burner exhaust gases and the energy recovered from the heat exchanger can be used particularly efficiently.
  • the conveyor is preferably designed as a discontinuous conveyor, preferably as a power & free conveyor, which is designed for a single conveyance of workpieces.
  • the residence time of the workpieces to be preheated above the already heated workpieces can be significantly increased and the residence time of the workpieces in the preheating zone can be programmed. In this way, an improved preheating of the workpieces is ensured.
  • FIG. 1 is a coating system according to the invention, which is designed as a paint shop, designated overall by the numeral 10.
  • the entire coating plant has a number of stations, of which only one station 12, which is designed as a dryer, is shown for the sake of simplicity.
  • the station 12 has a treatment chamber 18 and a preheating chamber 14.
  • Workpieces 30 to be dried are fed into the preheating chamber 14 via an inlet 26 by a conveyor 24 designed as a Power & Free conveyor.
  • the workpieces 30 pass from the preheating chamber 14 into the treatment chamber (drying chamber) 18 in which they are dried at temperatures of about 200.degree.
  • the workpieces After passing through the treatment chamber 18, the workpieces in turn enter the preheating chamber 14, in which they preheat in the manner described below incoming (cold) workpieces and then discharged from the conveyor 24 via an outlet 28 again from the preheating chamber 14.
  • a preheating zone 16 is provided in which workpieces 30 (still cold) entering the station 12 are moved above workpieces 32 (still warm) coming out of the treatment chamber 18.
  • Arrangement and method of movement of the conveyor 24 in the region of the preheating zone 16 are now carried out so that as far as possible a larger number of workpieces 30 to be heated is arranged above an as large as possible number of warm workpieces 32.
  • the conveyor 24 leads cyclically newly supplied still cold workpieces 30 in the region of the preheating zone 16 above the hot workpieces 32. Further intermittently, the then preheated workpieces 30 are conveyed into the treatment chamber 18 after passing through the preheating zone 16. In a corresponding manner, the movement of the hot workpieces 32, which pass from the treatment chamber into the preheating zone 16 of the preheating chamber 14, takes place cyclically.
  • the time that the workpieces 30, 32 remain in the preheat zone 16 is programmable.
  • the time period for preheating the newly supplied workpieces 30 can be made as long as possible by the still warm workpieces 32 from the treatment chamber 18.
  • the length of the preheating zone 16 depends on the heat capacity of the workpieces and in particular on the desired efficiency in the preheating of the workpieces.
  • a further improved preheating of the newly supplied workpieces 30 is achieved in that the exhaust gases from burners 20, 22, which are used to heat the treatment chamber 18, are also used to preheat the workpieces 30.
  • the burner exhaust gases which usually have an exhaust gas temperature in the order of 300 ° C, delivered without waste heat to the environment because the burner exhaust gases for paints or powders usually contain harmful ingredients that could affect the quality of the coating.
  • the exhaust gases 34, 36 of the burners 20, 22 are fed via a line 38 into the preheating station 14 and output below the workpieces 30 to be heated via an air outlet 40, so that they can contribute directly to the preheating of the workpieces 30.
  • the barrier air flow emitted via the air outlet 50 is preheated via a heat exchanger 42.
  • the heat exchanger 42 uses energy which is extracted from an exhaust air flow 44 from the treatment chamber 18, for heating clean air 46, which may be fresh air, and which is supplied after heating via a line 48 to the air outlet 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Coating Apparatus (AREA)

Claims (8)

  1. Installation de revêtement pour peindre ou revêtir par poudre des pièces, comprenant un convoyeur (24) pour le transport de pièces (30, 32) à travers au moins un poste réalisé sous forme de séchoir (12), dans lequel poste les pièces (30, 32) sont chauffées, le séchoir (12) comprenant une chambre de traitement (18) et une chambre de préchauffage (14) séparée de celle-ci, caractérisée en ce que le convoyeur (24) comprend dans la chambre de préchauffage (14) une zone de préchauffage (16) comprenant deux sections s'étendant l'une au-dessus de l'autre, avec une section supérieure et une section inférieure, caractérisée en ce que le convoyeur (24) s'étend de telle sorte que les pièces (30) entrant dans le séchoir (12) sont déplacées à travers la section supérieure au-dessus de la section inférieure dans la zone de préchauffage (16) en vue du préchauffage, à travers laquelle section inférieure les pièces (32) déjà chauffées sortant hors du séchoir (12) sont déplacées hors de la chambre de traitement (18).
  2. Installation de revêtement selon la revendication 1, dans laquelle les pièces (30) devant être préchauffées sont déplacées en sens contraire aux pièces (32) déjà chauffées.
  3. Installation de revêtement selon la revendication 1 ou 2, comprenant au moins un brûleur (20, 22) dont les gaz brûlés (34, 36) sont acheminés jusqu'aux pièces (30) devant être préchauffées dans la zone de préchauffage (16) en vue du chauffage.
  4. Installation de revêtement selon la revendication 3, dans laquelle la zone de préchauffage (16) est séparée de la chambre de traitement (18) du poste (12) par de l'air de barrage.
  5. Installation de revêtement selon la revendication 4, comprenant un échangeur de chaleur (42) qui utilise de la chaleur perdue pour le chauffage d'un flux d'air propre (46) qui est dirigé dans le séchoir (12).
  6. Installation de revêtement selon la revendication 5, dans laquelle l'air propre chauffé est acheminé en tant qu'air de barrage entre la zone de préchauffage (16) et la chambre de traitement (18).
  7. Installation de revêtement selon l'une quelconque des revendications précédentes, dans laquelle le convoyeur (24) est réalisé sous forme de convoyeur discontinu, de préférence sous forme de convoyeur « Power & Free », qui est réalisé pour un transport individuel de pièces (30, 32).
  8. Installation de revêtement selon l'une quelconque des revendications précédentes, dans laquelle le temps de séjour des pièces (30, 32) dans la zone de préchauffage (16) peut être programmé.
EP08749128.8A 2007-04-27 2008-04-25 Installation de revêtement Not-in-force EP2150762B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007020909A DE102007020909B4 (de) 2007-04-27 2007-04-27 Beschichtungsanlage
PCT/EP2008/003348 WO2008131917A1 (fr) 2007-04-27 2008-04-25 Installation de revêtement

Publications (2)

Publication Number Publication Date
EP2150762A1 EP2150762A1 (fr) 2010-02-10
EP2150762B1 true EP2150762B1 (fr) 2013-10-02

Family

ID=39620326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749128.8A Not-in-force EP2150762B1 (fr) 2007-04-27 2008-04-25 Installation de revêtement

Country Status (3)

Country Link
EP (1) EP2150762B1 (fr)
DE (1) DE102007020909B4 (fr)
WO (1) WO2008131917A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222688A1 (de) 2012-12-11 2014-06-12 Bayerische Motoren Werke Aktiengesellschaft Durchlauftrocknungsanlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965551A (en) * 1975-08-14 1976-06-29 Allied Tube & Conduit Corporation Production of polymer-coated steel tubing
AU521619B2 (en) 1977-07-27 1982-04-22 Sun Chemical Corporation Direct flame drying apparatus
DE3436055C1 (de) * 1984-10-02 1986-02-27 Ludwig Riedhammer GmbH, 8500 Nürnberg Industrieofen/Trockner-Kombination
DE3840413C1 (en) * 1988-11-30 1990-04-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De Installation for sheathing electrical components in plastic by the fluidised bed coating process
US5136971A (en) 1990-12-27 1992-08-11 Metokote Corporation Apparatus for transporting articles
US5565240A (en) * 1992-05-14 1996-10-15 Sanderson Plumbing Products, Inc. Process for producing powder coated plastic product
DE19635709A1 (de) * 1996-09-03 1998-03-05 Ema Elektro Maschinen Schultze Verfahren zum Beschichten eines Werkstücks

Also Published As

Publication number Publication date
DE102007020909A1 (de) 2008-10-30
DE102007020909B4 (de) 2013-09-05
EP2150762A1 (fr) 2010-02-10
WO2008131917A1 (fr) 2008-11-06

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