EP1782892A2 - Dispositif et procédé de traitement de surfaces de pièces - Google Patents

Dispositif et procédé de traitement de surfaces de pièces Download PDF

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Publication number
EP1782892A2
EP1782892A2 EP06021684A EP06021684A EP1782892A2 EP 1782892 A2 EP1782892 A2 EP 1782892A2 EP 06021684 A EP06021684 A EP 06021684A EP 06021684 A EP06021684 A EP 06021684A EP 1782892 A2 EP1782892 A2 EP 1782892A2
Authority
EP
European Patent Office
Prior art keywords
workpieces
treatment liquid
drying
zone
microwave
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
EP06021684A
Other languages
German (de)
English (en)
Other versions
EP1782892A3 (fr
EP1782892B1 (fr
Inventor
Wieland Flothmann
Roger Schmidt
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 SE
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
Priority to PL06021684T priority Critical patent/PL1782892T3/pl
Publication of EP1782892A2 publication Critical patent/EP1782892A2/fr
Publication of EP1782892A3 publication Critical patent/EP1782892A3/fr
Application granted granted Critical
Publication of EP1782892B1 publication Critical patent/EP1782892B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • 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
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection
    • 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
    • B05C9/10—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 being performed before the application
    • 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 surface treatment of workpieces, in particular for wet-chemical pretreatment of subsequently to be painted workpieces, with at least one working with a hydrous treatment liquid pretreatment zone and at least with a drying device for drying adhering to the surfaces of the workpieces aqueous treatment liquid.
  • the invention relates to a method for surface treatment of workpieces, in particular for wet-chemical pretreatment of subsequently to be painted workpieces, in which the surfaces of the workpieces subjected to a treatment with a water-containing treatment liquid and drying on the surfaces of the workpieces adhering treatment liquid is dried.
  • Known devices and methods of the type mentioned are used, for example, to pretreat workpieces, especially vehicle attachments, in chemical baths or rinses with particular grease removers and / or surfactants for subsequent painting.
  • To ensure good adhesion of the paint coating defects due to adhering water residues and Blistering is avoided, on the surfaces of the workpieces adhering treatment liquid, especially water in drop form, must be removed. This is done by drying with special drying equipment.
  • Object of the present invention is to design a device and a method of the type mentioned above, that in particular individual drops of an aqueous treatment liquid, in particular water, can be dried on the surface of the workpieces technically simple, fast and with high energy efficiency.
  • the dryer device has at least one microwave generator for drying the aqueous treatment liquid.
  • microwaves are produced with at least one microwave generator, in particular a magnetron, with which, in particular, drops of water-containing treatment liquid adhering to the surfaces of the workpieces can be directly heated and evaporated.
  • scooping sites, such as sinks, and capillary areas, such as holes can be dried in the surfaces of the workpieces without the workpieces themselves are heated unnecessarily.
  • the workpieces can be dried in this way very efficiently, so that a carryover of the treatment liquid is avoided, for example, in a subsequent Lakkierzone and also no reworking of the surfaces to eliminate drops of a treatment liquid is required.
  • almost no heat transfer of the treatment liquid takes place on the material surfaces, since the water evaporates very quickly.
  • the low heating of the workpieces has the great advantage that they are spared, so that the device can be used for sensitive workpieces, for example made of plastic. Since the individual drops of water are locally heated and evaporated with a low volume, a greater energy efficiency and a much faster drying than with the circulating air dryers or condensation dryers known from the prior art are possible in which the air surrounding the workpiece and under certain circumstances even the conveyor technology and the goods carriers are heated. In this way, any subsequent cooling zone requires less cooling power so that energy is also saved here. Depending on the workpiece geometry, even a cooling zone can be dispensed with.
  • the drying of adhesive water on the surfaces of the workpieces with microwaves leads to a very high compared to conventional dryers efficiency and significantly shorter drying times and thus to a significant reduction in operating costs, especially in terms of gas and electricity consumption.
  • the drying time in a conventional dryer is about 20 to 25 minutes, it can be reduced to about 3 to 4 minutes in the microwave dryer according to the invention.
  • the microwave generator requires significantly less space than, for example, a hot air blower of a conventional circulating air dryer.
  • the maintenance is significantly lower because the microwave generator has no moving parts and therefore also has a low wear.
  • the workpieces can be appropriately pretreated in the pretreatment zone of the device, in particular degreased, cleaned and rinsed with aqueous treatment liquid, and then dried, without any displacement of the workpieces from the device out is required.
  • the transport of the workpieces through the zones can be clocked, continuous or reversing. All known types of material transport on goods carriers are possible.
  • the workpieces can be made of plastic or metal.
  • On workpieces made of certain plastic microwaves have the positive side effect that, for example, their outgassing can be improved in preparation for the subsequent Lakkêt.
  • the dryer device can have a multiplicity of microwave generators, in particular magnetrons, arranged in particular around a transport path of the workpieces.
  • the conveying path in front of the microwave zone can lead through a blowing zone and / or following the microwave zone through a cooling zone.
  • the blowing zone the largest part of the treatment liquid can be blown from the surface of the workpieces, so that there are then only a few drops of treatment liquid on it, which can be heated quickly and with low energy expenditure with microwaves in the microwave zone and evaporate.
  • the workpieces can be cooled so that they can then be fed directly to a painting for painting.
  • the inventive method is characterized in that the treatment liquid is dried with microwaves.
  • microwaves Treatment liquid adhering to the surfaces of the workpieces is heated and evaporated rapidly and with great energy efficiency.
  • filling areas and capillary areas are dried without the workpieces themselves having to be heated.
  • the workpieces can be cleaned in this way, rinsed with the treatment liquid, and then dried directly.
  • the treatment liquid in particular the water, is removed without residue, so that no reworking of the surface is required.
  • the treatment liquid may be blown away from the surfaces of the workpieces before microwave-drying the adhering treatment liquid still adhering to the surfaces, and / or the workpieces may be cooled after drying the adhering treatment liquid with microwaves.
  • the drying process is significantly accelerated and also saves energy. Cooling
  • the workpieces following microwave drying have the great advantage that the workpieces can then be directly painted without or without long cooling times.
  • FIG. 1 shows a plan view of a pretreatment device provided overall with the reference numeral 1 for wet-chemical pretreatment of surfaces of workpieces 3 made of plastic to be subsequently painted.
  • the pretreatment device 1 comprises along a transport path indicated by arrows 5, which in FIGS 1, 2 and 3 substantially horizontally from left to right, one behind the other a wet-chemical pre-treatment zone 7, a blowing zone 9, a in Figures 2 and 3 also shown in detail microwave zone 11 and a cooling zone 13.
  • the zones 7, 9, 11 and 13 are each surrounded by a cuboidal cabin 15, 17, 19 and 21, respectively, which can be opened to the respectively adjacent zone 7, 9, 11 and 13, respectively.
  • the cabin 17 of the wet-chemical pretreatment zone 7 is in the feed direction for the workpieces 3, left in Figure 1, and the cabin 21 of the cooling zone 13 in the export direction, right in Figure 1, outwardly open to the environment or accessible via an airlock.
  • FIG. 3 shows in detail a section of the microwave zone 3, through which the conveyor system 23 runs, on which a skid 25 with two similar to those of FIG vertical fabricated from profiles goods carriers 31 is located on which a cuboid workpiece 3 is mounted.
  • wet-chemical pretreatment zone 7 In the wet-chemical pretreatment zone 7 are not shown in detail chemical baths with grease removers and surfactants in which the workpieces 3 can be cleaned and pretreated.
  • purging devices not shown in detail there, are also provided there, with which the workpieces 3 can be rinsed with deionized water after cleaning and pretreatment.
  • any other known type of cleaning such as acidic cleaning, CO 2 ice et cetera can be used.
  • the blowing zone 9 has a blower, not shown, with which after the rinsing in the wet-chemical pretreatment zone 7 adhering water on the surfaces of the workpieces 3 can largely be blown away, so that only a few drops of water remain adhering to the surfaces.
  • the microwave zone 11 comprises a drying device, indicated overall by the reference numeral 33, for drying the water droplets, which are still occasionally adhered to the surfaces of the workpieces 3 after being blown away.
  • the drying device 33 has, visible in Figures 1 and 2, four successively arranged in the direction of the conveying path 5 magnetron rings 35.
  • Each magnetron ring 35 comprises magnetrons 37 which are directed inwards onto the workpieces 3 and are approximately annularly arranged in a plane perpendicular to the conveying direction 5, as can be seen in FIG.
  • the magnetrons 37 are each mounted in pairs on the two side walls 39 and the top wall 41 of the cabin 19 of the microwave zone 11. They are arranged so that they can emit microwaves to the interior of the cabin 19 of the microwave zone 11, ie to the surfaces of the workpieces 3, out.
  • the magnetrons 37 are connected via supply lines, not shown, with a control cabinet 43, which is located next to the cabin 19 of the microwave zone 11, in Figure 2 above. In the cabinet 43 not shown supply sources and control means for the magnetron 37 are arranged.
  • the special arrangement of the magnetrons 37 and the choice of the wavelength of the microwaves ensures that the water droplets are locally heated by the microwaves on the surfaces of the workpieces 3, also at scooping points, for example depressions, and in capillary areas, for example in holes become and evaporate.
  • the workpieces 3 themselves, the goods carriers 31 and also the skids 25 are here hardly, that is heated to less than 60 ° C, since the microwaves act substantially selectively on the water. In this way it is achieved that a rapid drying of adhering to the surfaces of the workpieces 3 adhesive water can be done with a very high energy efficiency.
  • the outgassing of the plastic of the workpieces 3 can be improved.
  • cooling the drying device 33 in particular the magnetron 37, with cooling water is also next to the cabin 19 of the microwave zone 11, arranged in Figure 2 next to the cabinet 43, a cooling unit 45 and not shown cooling lines to the dryer 33 and cooling shells not shown magnetrons 37 connected.
  • wet-chemical pretreatment of the surfaces of the workpieces 3 to be painted these are first conveyed intermittently with the skids 25 and the goods carriers 31 via the conveyor system 23 at a distance one behind the other along the conveying path 5 into the wet-chemical pretreatment zone 7. There, the workpieces 3 are treated in the chemical baths with the appropriate chemicals. The workpieces 3 are then rinsed with the deionized water so that the surfaces are free of treating chemicals.
  • the skids 25 and the goods carrier 31 with the workpieces 3 are cyclically successively transported through the blowing zone 9. There the water on the surfaces is largely blown away. Isolated drops of water remain adhering to the surfaces, especially at scooping or capillary areas.
  • skids 25 are cyclically successively transported with the workpieces 3 through the microwave zone 11, where the remaining drops of water on the surfaces of the workpieces 3 are now dried without residue within 3 to 4 minutes with microwaves, so that neither a Haftwasserverschleppung takes place, nor the Surfaces must be reworked due to coating problems caused by water droplets.
  • the arranged on the skids 25, cooled workpieces 3 can then be fed directly through the conveyor system 23 of the pretreatment device 1 subsequent, not shown, painting for painting.
  • the workpieces 3 can also be cleaned with the pretreatment device 1 only with water without the use of chemicals.
  • the pretreatment device 1 and the method are also not limited to the pretreatment of workpieces 3 to be painted. Rather, the workpieces 3 can also be treated differently after the pretreatment, for example also glued or welded.
  • the pretreatment device 1 and the method can also be used for drying adherent residual water on layers of already completely dry paint, for example, following a cleaning of the paint surface, after grinding processes.
  • the pretreatment device 1 may also have more than one dryer device 33.
  • the workpieces 3 can instead of intermittently also continuously or reversibly and also during transport transported in rotation along the conveying path 5.
  • the zones 7, 9, 11 and 13 need not be rectilinear in a row, they may also be arranged along a curve or offset horizontally or vertically.
  • microwave generators in particular microwave tubes, for example klystrons, or even microwave semiconductor components.
  • microwave generators may be provided in a different arrangement than annular.
  • the annular arrangement of the microwave generators may also be inclined at an angle to the conveying path 5. It is also possible to use more or fewer than four ring arrangements.
  • the workpieces 3 may instead of plastic also made of another material, for example metal, carbon fiber, Glass, ceramics, a composite material or a material mix.
  • the transport path 5 for the workpieces 3 can, instead of through a wet-chemical pretreatment zone 7, also lead through a plurality of different pretreatment zones.
  • blowing zone 9 may also be provided only either a blowing zone 9 or a cooling zone 13. It can also be dispensed with both.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP06021684A 2005-11-07 2006-10-17 Procédé de traitement de surfaces de pièces Not-in-force EP1782892B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06021684T PL1782892T3 (pl) 2005-11-07 2006-10-17 Sposób obróbki powierzchniowej przedmiotów obrabianych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005053327A DE102005053327B4 (de) 2005-11-07 2005-11-07 Vorrichtung und Verfahren zur Oberflächenbehandlung von Werkstücken

Publications (3)

Publication Number Publication Date
EP1782892A2 true EP1782892A2 (fr) 2007-05-09
EP1782892A3 EP1782892A3 (fr) 2008-05-14
EP1782892B1 EP1782892B1 (fr) 2012-03-14

Family

ID=37758708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06021684A Not-in-force EP1782892B1 (fr) 2005-11-07 2006-10-17 Procédé de traitement de surfaces de pièces

Country Status (6)

Country Link
US (1) US20070104889A1 (fr)
EP (1) EP1782892B1 (fr)
CN (1) CN1962086A (fr)
DE (1) DE102005053327B4 (fr)
ES (1) ES2383194T3 (fr)
PL (1) PL1782892T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111570367A (zh) * 2018-05-18 2020-08-25 浙江杰斯特电器有限公司 一种基于涡卷支撑条的蓄电池自动清洗吹干设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102861709B (zh) * 2012-09-21 2014-01-01 东莞丰裕电机有限公司 工件清洗线
DE102015214706A1 (de) 2015-07-31 2017-02-02 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015214711A1 (de) 2015-07-31 2017-02-02 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
CN110841855A (zh) * 2019-12-11 2020-02-28 东莞华力机械有限公司 一种环保喷漆生产线
CN110773367A (zh) * 2019-12-11 2020-02-11 东莞华力机械有限公司 一种智能化环保喷漆生产线
CN113333338B (zh) * 2021-04-21 2023-06-23 南京精恒复合材料有限公司 一种电力柜专用玻璃钢面板制备辅助装置

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5346722A (en) 1993-05-18 1994-09-13 Corning Incorporated Method for improving the thermal shock resistance of a washcoated body

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US4631380A (en) * 1983-08-23 1986-12-23 Durac Limited System for the microwave treatment of materials
US4647443A (en) * 1984-10-12 1987-03-03 Fred Apffel Recovery process
DE19624610A1 (de) * 1996-06-20 1998-01-02 Colortronic Gmbh Verfahren und Vorrichtung zum Trocknen
EP0963795B1 (fr) * 1998-06-10 2002-07-31 HTM Sport- und Freizeitgeräte Aktiengesellschaft Procédé pour le revêtement des pièces par pulvérisation de poudre
DE19924624A1 (de) * 1999-05-28 2000-11-30 Ecken Prozesstechnik Gmbh Verfahren und Vorrichtung zur Trocknung von Produkten
DE10036561A1 (de) * 2000-07-27 2002-02-07 Jorge Rodriguez Giles Verfahren und Vorrichtung zur Trocknung von wasserbasierten Druckfarben, Tinten, Lacken, Klebstoffen und der gleichen auf einem flächigen Substrat oder Bedrucksstoff mit Mikrowellenfeldern
WO2002031065A2 (fr) * 2000-10-11 2002-04-18 Chemetall Gmbh Procede de pretraitement et d'enduction subsequente de surfaces metalliques avant le formage a l'aide d'une couche de type peinture et utilisation des substrats ainsi recouverts
DE10200757B4 (de) * 2002-01-10 2007-06-14 Dct Dry Control Technologies Gmbh & Co. Kg Verfahren und Vorrichtung zur Behandlung eines Beschichtungsstoffes auf einem Substrat und/oder eines Substrats sowie deren Verwendung
CA2472063C (fr) * 2002-01-29 2011-05-24 Ciba Specialty Chemicals Holding Inc. Procede de production de revetements fortement adherents
JP2004344860A (ja) * 2003-03-25 2004-12-09 Kansai Paint Co Ltd 塗膜形成方法
DE102004001385A1 (de) * 2004-01-09 2005-08-11 Chemetall Gmbh Organischer Korrosionsschutzüberzug

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Publication number Priority date Publication date Assignee Title
US5346722A (en) 1993-05-18 1994-09-13 Corning Incorporated Method for improving the thermal shock resistance of a washcoated body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111570367A (zh) * 2018-05-18 2020-08-25 浙江杰斯特电器有限公司 一种基于涡卷支撑条的蓄电池自动清洗吹干设备
CN111570367B (zh) * 2018-05-18 2021-07-16 浙江杰斯特电器有限公司 一种基于涡卷支撑条的蓄电池自动清洗吹干设备

Also Published As

Publication number Publication date
US20070104889A1 (en) 2007-05-10
EP1782892A3 (fr) 2008-05-14
EP1782892B1 (fr) 2012-03-14
ES2383194T3 (es) 2012-06-19
PL1782892T3 (pl) 2012-08-31
DE102005053327A1 (de) 2007-05-10
CN1962086A (zh) 2007-05-16
DE102005053327B4 (de) 2008-08-21

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