(19)
(11) EP 0 360 301 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.12.1990 Bulletin 1990/49

(43) Date of publication A2:
28.03.1990 Bulletin 1990/13

(21) Application number: 89120682.3

(22) Date of filing: 22.09.1987
(51) International Patent Classification (IPC)5: B05D 3/00, B05D 7/14, B05D 7/16, B05B 13/00, B05B 13/02
(84) Designated Contracting States:
DE FR GB

(30) Priority: 25.09.1986 JP 226458/86
26.03.1987 JP 70388/87
26.03.1987 JP 70389/87
30.04.1987 JP 104426/87
30.04.1987 JP 104427/87

(62) Application number of the earlier application in accordance with Art. 76 EPC:
87113844.2 / 0261644

(71) Applicant: Mazda Motor Corporation
Aki-gun Hiroshima-ken (JP)

(72) Inventors:
  • Matsui, Masataka
    Aki-gun Hiroshima-ken (JP)
  • Aono, Toshiaki
    Aki-gun Hiroshima-ken (JP)
  • Tanimoto, Yoshio
    Aki-gun Hiroshima-ken (JP)
  • Nakahama, Tadamitsu
    Aki-gun Hiroshima-ken (JP)
  • Yamane, Takakazu
    Aki-gun Hiroshima-ken (JP)

(74) Representative: LOUIS, PÖHLAU, LOHRENTZ & SEGETH 
Hauptstrasse 19
82319 Starnberg
82319 Starnberg (DE)


(56) References cited: : 
   
       


    (54) Coating method in coating line and coating apparatus therefor


    (57) The coating method contains a spraying step in which a paint is sprayed at least on a coating substrate extending in an upward and downward direction to a film thickness thicker than causing sags of the sprayed paint. The coating substrate on which the paint is sprayed is rotated about the horizontal axis while the sprayed paint is dried until it does not sag any more.
    The coating apparatus includes a carriage conveying the coating substrate arranged to run along the conveying direction, and the carriage is provided with a supporting base for supporting the coating substrate rotatively about the horizontal axis. One embodiment for rotating the substrate supported by the supporting base is a spring that is disposed on the carriage to rotate the substrate by means of a restoring force produced by the spring. On the passage for conveying the carriage is disposed a force storing mechanism for storing the restoring force in the spring that released the restoring force.
    Another embodiment therefor is a combination of a chain disposed along the conveying passage for the carriage with a sprocket disposed on the carriage. The sprocket is engageable with the chain and operatively coupled to the coating substrate. By disposing the chain in a fixed manner, on the one hand, the substrate is caused to rotate as the carriage is being conveyed. By dividing the chain, on the other, the substrate is caused to rotate while theconveyance of the carriage is suspended.







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