Painting method and apparatus for spray painting of vertical...

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 13/04 (2006.01) B05B 15/08 (2006.01)

Patent

CA 2280265

A paint spray rig (22) is disclosed for applying "high gain" reflective paints to a motion picture projection screen (20). The rig (22) includes a tower (24) which extends vertically of the screen (20) and which can be indexed laterally across the screen (20). A paint spray head (32) is carried by a carriage assembly (34, 36) that is vertically movable on the tower (24). The spray head (32) can be moved towards and away from the screen (20) under the control of ultrasonic sensors (42, 44) that measure the distance between the spray head (32) and the screen (20), for maintaining the distance substantially constant. The spray head (32) can also be moved progressively in the vertical direction with respect to the carriage (34, 36) so that it is at the bottom of the carriage (34, 36) for painting the bottom edge of the screen (20) and at the top of the carriage (34, 36) for painting the top edge of the screen (20). The spray head (32) can also be swapped from one side of the carriage (34, 36) to the other for painting opposite side edge portions of the screen (20).

L'invention concerne un montage de pulvérisation de peinture (22) utilisé pour l'application de peintures réfléchissantes à "grand gain" sur un écran de projection cinématographique (20). Ledit montage (22) comprend une tour (24)qui s'étend verticalement le long de l'écran (20) et qui peut être alignée latéralement d'un bout à l'autre de l'écran (20). Un tête de pulvérisation de peinture (32)est supportée par un ensemble chariot (34, 36) qui se déplace verticalement sur la tour (24). La tête de pulvérisation (32) peut être rapprochée et éloignée de l'écran (20) au moyen de capteurs ultrasonores (42, 44) qui mesurent la distance entre la tête de pulvérisation (32) et l'écran (20), et la maintienne sensiblement constante. La tête de pulvérisation (32) peut également se déplacer progressivement dans le sens vertical par rapport au chariot (34, 36) de sorte qu'elle se trouve au bas du chariot (34, 36) pour la peinture du bord inférieur de l'écran (20) et au sommet du chariot (34, 36) pour la peinture du bord supérieur de l'écran (20). La tête de pulvérisation (32) peut également être déplacée d'un côté à l'autre du chariot (34, 36) pour la peinture des parties latérales opposées de l'écran (20).

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