Method and apparatus for applying self-adhesive protective...

B - Operations – Transporting – 60 – R

Patent

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B60R 13/06 (2006.01) B29C 63/00 (2006.01) B29C 63/02 (2006.01) B62D 65/00 (2006.01) B65B 11/02 (2006.01) B65B 33/04 (2006.01) B65B 41/14 (2006.01) B65B 61/02 (2006.01) B65B 61/06 (2006.01)

Patent

CA 2218453

In a method and apparatus for automatically applying self-adhesive protective sheeting to surface parts of vehicle bodies, a specific rectangular piece of protective sheeting in the form of stock roll is grasped on its non-adhesive side, using a robot-controlled tentering frame with suction legs, is drawn off and is cut off. Before the sheeting blank is laid on to the body, in the freely stretched-out state tear-off lines are perforated, preferably from the non-adhesive sheeting side, in the region of accessory parts by means of a perforating device guided along definite contour lines. Thereafter the protective sheeting, which is thus prepared and stretched out so as to be free of creases in the tentering frame, is lowered in the correct position onto the associated part by the handling robot and laid onto the surface part so as to be free of bubbles. The sheetings are subsequently pressed down in a brushing manner under an elastic brushing bar extending over the entire vehicle width. In the region of glued-over gaps in the vehicle body surface, the protective sheeting is severed and the cut edges are pressed down. In the region of accessory parts, protective sheeting parts are drawn off along the perforated tearing lines and openings are thus made in said regions in a manner appropriate for assembly.

Cette invention concerne une méthode d'application automatique d'une pellicule de protection autocollante aux surfaces d'une carrosserie d'automobile et la machine correspondante. La machine saisit une pièce rectangulaire de pellicule d'un rouleau d'alimentation par le côté non adhésif, au moyen d'une rame à pattes d'aspiration asservie à un robot, la déroule et la découpe à la longueur voulue. Avant de placer la pellicule sur la carrosserie, elle y pratique, avant de la tendre et, de préférence, par le côté non adhésif, une série de perforations délimitant le contour d'accessoires qui ne sont pas à protéger. Par la suite, la pellicule ainsi préparée et tendue pour éliminer tout pli ou ride est abaissée sur l'endroit approprié de la carrosserie par le robot manipulateur de manière à éviter la formation de bulles d'air. La pellicule est par la suite lissée au moyen d'une règle lisseuse élastique faisant toute la largeur du véhicule à protéger. € l'endroit des joints de carrosserie, la pellicule est découpée et ses bords bien calés dans le joint. € l'endroit des accessoires de carrosserie, la découpe pré-perforée est enlevée pour ménager des ouvertures prêtes à recevoir l'élément à monter.

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