Method and device for blow moulding

Details Method and device for blow moulding Method and device for blow moulding

B - Operations, Transporting

29

C

B29C 49/78 (2006.01) B29C 49/28 (2006.01) G05B 19/042 (2006.01) B29C 49/06 (2006.01)

Patent

CA 2281634

The invention concerns a device comprising several modules (11, 12, 13, 14, 15, 16) linked by a conveyor belt (17). Each module comprises a furnace for heating (20) preforms, a transfer wheel (21), and means for transferring (22) preforms from the conveyor belt onto the transfer wheel, a press (23) for moulding objects from preforms and a member for unloading (24) moulded objects. The method consists in bringing preforms in the proximity of all the modules by means of the conveyor belt, in stopping the belt and bringing two preforms on the transfer wheel of each module. The displacement of the modules in the press (23), the closing of the press, blowing the objects and the displacement of the moulded objects in the proximity of the unloading member (24) are carried out at different moments for each module. The unloading is simultaneously carried out for each module.

Le dispositif selon la présente invention comporte plusieurs modules (11, 12, 13, 14, 15, 16) reliés par un ruban convoyeur (17). Chaque module comporte un four de chauffage (20) de préformes, une roue de transfert (21), des moyens de transfert (22) des préformes du ruban convoyeur sur la roue de transfert, une presse (23) de moulage des objets à partir des préformes et un organe de déchargement (24) des objets moulés. Le procédé consiste à amener des préformes à proximité de tous les modules par le ruban convoyeur, à arrêter le ruban et à amener deux préformes sur la roue de transfert de chaque module. Le déplacement des préformes dans la presse (23), la fermeture de la presse, le soufflage des objets, l'ouverture de la presse et le déplacement des objets à proximité de l'organe de déchargement (24) se font à des moments différents pour chaque module. Le déchargement des objets est effectué simultanément pour chaque module.

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