Aftercooling apparatus and method for aftercooling preforms

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/72 (2006.01) B29B 11/08 (2006.01) B29C 49/64 (2006.01)

Patent

CA 2676615

The invention relates to a device and a method for finishing and calibrating preforms (10) which are removed from a multiple injection tool in an unstable shape, and proposes an air cooler integrated into the water cooled cooling jackets (21) for the outer side of the open end face of the preform (10). Particularly in the case of special preform varieties, the areas which are unsupported in the cooling jackets (21) can be prestrengthened on the outside, from the beginning of the transfer from the open molds (8, 9) to the removing and/or cooling jackets, by means of a cooling which uses cooling air or deep cooled air. With the novel solution, the highest quality can be assured, in particular with respect to dimensional stability and the absence of pressure points under load, by means of a calibration in the cooling jackets (32) and the treatment in the area of the aftercooling.

L'invention concerne un dispositif ainsi qu'un procédé de post-traitement et de calibrage de préformes (10) sorties sous une forme instable d'un moule à injection polyvalent. L'invention propose également un refroidissement par l'air intégré dans les manchons de refroidissement (21) refroidi par l'eau pour le côté extérieur du côté d'extrémité ouvert de la préforme (10). En particulier dans le cas de types particuliers de préformes, les zones qui sont sans appui dans les manchons de refroidissement (21) peuvent être consolidées au préalable à l'extérieur, dès le début du transfert hors des formes ouvertes (8, 9) vers les manchons d'extraction ou de refroidissement, par refroidissement au moyen d'un air de refroidissement ou d'un air congelé. Cette nouvelle solution permet de garantir une qualité optimale, en particulier également du point de vue de la stabilité dimensionnelle et de la liberté de réglage de pression, par la sollicitation d'un calibrage dans les manchons de refroidissement (32) ainsi que le maniement dans la zone de post-refroidissement.

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