EP1749903A1 - Installation de peinture électrophorétique - Google Patents

Installation de peinture électrophorétique Download PDF

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Publication number
EP1749903A1
EP1749903A1 EP06014191A EP06014191A EP1749903A1 EP 1749903 A1 EP1749903 A1 EP 1749903A1 EP 06014191 A EP06014191 A EP 06014191A EP 06014191 A EP06014191 A EP 06014191A EP 1749903 A1 EP1749903 A1 EP 1749903A1
Authority
EP
European Patent Office
Prior art keywords
contact
workpiece
electro
dip painting
shoe
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
EP06014191A
Other languages
German (de)
English (en)
Other versions
EP1749903B1 (fr
Inventor
Thomas Noller
Wolfgang Mauk
Markus Hoffmann
Andreas Hablizel
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
Publication of EP1749903A1 publication Critical patent/EP1749903A1/fr
Application granted granted Critical
Publication of EP1749903B1 publication Critical patent/EP1749903B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/22—Servicing or operating apparatus or multistep processes

Definitions

  • electro-dip painting also called electrophoretic painting
  • the paint components separate in the Lackbad under the influence of an electric field on the workpieces. It has proven to be expedient not to keep the electric field during the passage of the workpieces through the coating bath constant, but to vary along the path of movement, in particular to let rise with the distance traveled. Reason for this measure is, inter alia, that the build-up paint layer is an electrical resistance, which complicates the further construction of the paint layer.
  • Object of the present invention is to provide an electro-dip painting device of the type mentioned in such a way that it can be easily controlled and causes less wear on the contactors.
  • each workpiece can be assigned a single contact rail whose potential can be varied during the passage of the workpieces through the coating bath to its full length, without thereby changing the voltage applied to the other workpieces.
  • the invention allows a more individual adaptation of the voltage guide along the path of movement to the individual workpiece. As a result, the layer thicknesses can be maintained more accurately, which leads to paint savings:
  • the contact device comprises a contact shoe and is arranged so that the contact shoe can be brought into different, the plurality of contact rails corresponding layers.
  • it can therefore be redetermined by determining the position of the contact shoe for each workpiece, which of the several parallel to each other, e.g. superimposed contact rails for this workpiece "in charge" is.
  • the displacement of the contact shoe takes place under the influence of the central system control.
  • the contact device may have a fluid-actuated cylinder or an electrically actuated actuator, with which the contact shoe can be moved.
  • the contact device has a locking device with which the contact shoe can be releasably locked in different positions. This facilitates the finding of the correct position for the contact shoe as well as the maintenance of this altitude during the movement of the workpiece along the associated contact rail.
  • the fluid actuated cylinder or the electrically actuated actuator may optionally be movable or stationary together with the workpiece.
  • a soft-type guide device with a convertible guide member, with which a contact shoe can be passed during its movement either on one of the various contact rails.
  • each workpiece for each contact rail a bewegbarer along the respective contact rail contact shoe zugeodnet and in which an electrical switch is provided for each workpiece, with which the various contact shoes associated with the workpiece optionally be switched through to the workpiece can.
  • FIG. shows a total of three vehicle bodies 1a, 1b, 1c, the one can think of immersed in a paint-filled paint pool, as mentioned in the above DE 199 42 556 C2 is described.
  • the paint pool is not shown in Figure 1, as well as the conveyor, with which the various vehicle bodies 1 are moved continuously or intermittently through the paint pool.
  • a suspension conveyor as he as a conveyor 12 in the DE 199 42 56 C2 is shown, but also a conveyor that makes use of individual, independently movable and controllable weighing.
  • counter electrodes in particular anodes, placed in a known manner along the path of movement of the vehicle bodies 1a, 1b, 1c, as is also the DE 199 42 556 C2 can be seen.
  • the electric field which is established within the paint liquid between the counter electrodes and the vehicle bodies 1a, 1b, 1c, the deposition of the paint components on the vehicle bodies 1a, 1b, 1c takes place.
  • the ampere-hour number that has flowed between the counterelectrodes and the vehicle bodies 1a, 1b, 1c as they pass through the paint pool represents a direct measure of the thickness of the deposited paint layer.
  • the vehicle bodies 1a, 1b, 1c In order to produce the required for the electrophoretic deposition of the paint electric field, the vehicle bodies 1a, 1b, 1c must be connected during their movement through the paint bath to the corresponding pole of a DC voltage source, in the usual case of cataphoretic dip painting with the negative pole.
  • Each contact rail 2a, 2b, 2c is connected to a pole, preferably the negative pole, of its own controllable DC voltage source 20a, 20b, 20c.
  • the other pole of these DC voltage sources 20a, 20b, 20c is connected to the electrodes arranged along the path of movement, preferably anodes.
  • the assignment of the vehicle bodies 1a, 1b, 1c to the corresponding contact rails 2a, 2b, 2c and thus to the corresponding DC voltage sources 20a, 20b, 20c takes place in that the contact rails 2a, 2b, 2c at different heights along the path of movement of the vehicle bodies 1a , 1b, 1c extend.
  • the contact rail 2a runs highest, the contact rail 2c at the lowest, and the contact rail 2b between the contact rails 2a and 2c.
  • each contact rail 2 a, 2 b, 2 c it is possible along the entire length of each contact rail 2 a, 2 b, 2 c in each case to move a contact shoe 3 a, 3 b, 3 c, which is electrically and mechanically connected to the respective vehicle body 1 a, 1 b, 1 c.
  • This contact adjustment device 4 serves to bring the corresponding contact shoe 3a, 3b, 3c to the correct height for each vehicle body 1a, 1b, 1c entering the paint bath so that the correct contact rail 2a, 2b, 2c touches on the further path becomes.
  • a plate 7 On a vertical side surface of the element 6, a plate 7 is fixed, which in turn on its side facing away from the element 6 vertical three cross-sectionally V-shaped grooves 8a, 8b, 8c has. Instead of grooves and conical depressions may be provided.
  • FIG. 2 shows, between one of the grooves 8a, 8b, 8c, in the present case the groove 8a, and one of the contact rails 2a, 2b, 2c, in the present case the contact rail 2a, the contact shoe 3a belonging to the vehicle body 1a extends.
  • This is an essentially cylindrical part, which carries the actual contact 9 on its spherical cap-shaped rounded end face facing the contact rail 2a. At least its outermost layer is made of electrically conductive carbon.
  • the plate 7 and thus the groove 8a facing end portion of the contact shoe 3a is provided with a blind bore 10 into which a detent ball 11 can be more or less pushed.
  • the detent ball 11 is pressed by a tensioned between her and the bottom of the blind bore 10 compression spring 14 into the groove 8a.
  • the entire contact shoe 3a can be adjusted in the direction of the double arrow 13 with the aid of a pneumatic cylinder 12 or another actuator, which is moved along with the vehicle body 1a on the conveyor 6.
  • the contact adjusting device 4 described works as follows:
  • the controller assigns the respective vehicle body 1 a, 1 b, 1 c a contact rail 2 a, 2 b, 2c, over which the vehicle body in question 1a, 1b, 1c is brought to the corresponding voltage during the Lackabscheidevorganges.
  • the pneumatic cylinder 12 is now addressed by the controller so that it brings the contact shoe 3a, 3b, 3c of the corresponding vehicle body 1a, 1b, 1c to the correct height, in which the conductive contact 9 in abutment against the corresponding contact rail 2a, 2b, 2c is.
  • the finding and maintaining the correct height is facilitated by the locking device, which is formed by the grooves 8a, 8b, 8c and the detent ball 11 of the contact shoe 3a.
  • the respective vehicle body 1 a, 1 b, 1 c are guided through the paint pool, with a possibly time-varying voltage on the vehicle body 1 a, 1 b, 1 c applied.
  • the control of the forming paint layer thickness on the flowed charge is very easy, since only a single, flowed through a contact rail 2a, 2b, 2c current without section-wise switching needs to be measured.
  • FIG. 3 shows another embodiment of a contact adjustment device 104, which is very similar to that described above with reference to FIG. Corresponding parts are therefore in Figure 3 with the same reference numerals as in Figure 2, plus 100, respectively.
  • Each vehicle body 201a, 201b, 201c in FIG. 4 is associated with an electrically controllable changeover switch 204a, 204b, 204c, which is moved together with the vehicle body 201a, 201b, 201c in question.
  • Each vehicle body 201a, 201b, 201c also includes three contact shoes 203aa, 203ab, 203ac, 203ba, 203bb, 203bc, 203ca, 203cb, 203bb, which together with the vehicle body 201a, 201b, 201c each extend along one of the three contact rails 202a, 202b, 202c can be moved.
  • These contact shoes 203 can be selectively switched through by the respective changeover switch 2004a, 204b, 204c in response to a control command to the respective vehicle body 201a, 201b, 201c.
  • FIG. 5 A further example of how the individual workpieces can be assigned to specific contact rails is shown in FIG. 5. Parts corresponding to those of FIG. 1 are identified by the same reference symbols plus 300.
  • the basic structure in FIG. 5 with the plurality of contact rails 302a, 302b, 302c, contact shoes 303a, 303b, 303c sliding thereon and the DC voltage sources 320a, 320b, 330c is the same as in FIG.
  • a soft-type guide device 304 replacing the switching means 4 or 104 of FIGS. 2 and 3 is provided.
  • This has a drogue 304a, in which the contact shoes 303a, 303b, 303c of all approaching vehicle bodies 301a, 301b, 301c are introduced regardless of their altitude in their movement.
  • the contact shoes 303a, 303b, 303c which are guided vertically movably on the conveyor, are all brought to the same height position in the drogue 304a and reach a guide member 304b.
  • each contact shoe 303a, 303b, 303c automatically runs on the contact rail 302a, 302b, 302c intended for it.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating Apparatus (AREA)
EP06014191A 2005-08-01 2006-07-08 Installation de peinture électrophorétique Expired - Fee Related EP1749903B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005036115.3A DE102005036115B4 (de) 2005-08-01 2005-08-01 Elektro-Tauchlackierungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1749903A1 true EP1749903A1 (fr) 2007-02-07
EP1749903B1 EP1749903B1 (fr) 2011-10-05

Family

ID=37434424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06014191A Expired - Fee Related EP1749903B1 (fr) 2005-08-01 2006-07-08 Installation de peinture électrophorétique

Country Status (4)

Country Link
US (1) US7862701B2 (fr)
EP (1) EP1749903B1 (fr)
DE (1) DE102005036115B4 (fr)
ES (1) ES2373965T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109161953A (zh) * 2018-09-30 2019-01-08 安徽江淮汽车集团股份有限公司 一种电泳生产线上的取电装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279427A (en) * 1968-10-19 1972-06-28 Siemens Ag Electrophoretic lacquering
EP0649919A1 (fr) * 1993-10-22 1995-04-26 Regie Nationale Des Usines Renault S.A. Installation de traitement de surfaces par cataphorèse de pièces métalliques, notamment de carrosseries de véhicules automobiles
WO2004108996A2 (fr) * 2003-06-06 2004-12-16 Eisenmann Maschinenbau Gmbh & Co. Kg Installation de peinture electrophoretique par immersion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1970438U (de) * 1964-09-29 1967-10-12 Elektrophorese G M B H Vorrichtung zur kontinuierlichen durchfuehrung des elektrophoreselackierverfahrens fuer die durchlauflackierung groesserer serien.
US5223116A (en) * 1992-05-11 1993-06-29 Siemens Aktiengesellschaft Apparatus for electrophoretic application of a lacquer onto plate-shaped work pieces
DE19942556C2 (de) * 1999-09-07 2003-04-30 Eisenmann Kg Maschbau Elektrotauchlackiervorrichtung
DE20000970U1 (de) * 2000-01-21 2000-04-13 Heinrich Maurer Gmbh Aufnahmeaggregat für Oberflächenbehandlungsanlagen
DE102005037174B3 (de) * 2005-08-06 2006-06-14 Eisenmann Maschinenbau Gmbh & Co. Kg Elektro-Tauchlackiervorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279427A (en) * 1968-10-19 1972-06-28 Siemens Ag Electrophoretic lacquering
EP0649919A1 (fr) * 1993-10-22 1995-04-26 Regie Nationale Des Usines Renault S.A. Installation de traitement de surfaces par cataphorèse de pièces métalliques, notamment de carrosseries de véhicules automobiles
WO2004108996A2 (fr) * 2003-06-06 2004-12-16 Eisenmann Maschinenbau Gmbh & Co. Kg Installation de peinture electrophoretique par immersion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109161953A (zh) * 2018-09-30 2019-01-08 安徽江淮汽车集团股份有限公司 一种电泳生产线上的取电装置

Also Published As

Publication number Publication date
DE102005036115A1 (de) 2007-02-15
DE102005036115B4 (de) 2017-03-23
EP1749903B1 (fr) 2011-10-05
ES2373965T3 (es) 2012-02-10
US20070029203A1 (en) 2007-02-08
US7862701B2 (en) 2011-01-04

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