Machine for blow moulding hollow objects

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 49/36 (2006.01) B29C 49/42 (2006.01) B29C 49/64 (2006.01) B29C 49/68 (2006.01) B29C 35/08 (2006.01) B29C 49/06 (2006.01)

Patent

CA 2117461

A machine for blow moulding hollow objects from thermoplastic blanks (6, 6'), comprising at least one blank heating apparatus (I) and an array (III) of fixed moulding stations (1a, 1f) positioned along an arc of a circle. The machine is particularly remarkable in that the moulding stations each comprise a finished product ejecting device, while a rotary transfer device (II) is provided between said heating apparatus (I) and said moulding stations (1a, 1f) for transferring heated blanks. The transfer device (II) between the heating apparatus (I) and the moulding stations (III) is suitably a wheel coaxial with the arc of the circle on which the moulding stations (III) are located, said wheel being provided with blank carriers (11') evenly spaced in a circle and designed to pick up a heated blank and place it in a receptacle (23) in a moulding station (1a, 1f).

L'invention concerne une machine de fabrication de corps creux par soufflage à partir de préformes thermoplastiques (6, 6') et comportant au moins un appareil de réchauffage (I) des préformes et un ensemble (III) de postes de moulage (1a, 1f) disposés de manière fixe en arc de cercle. La machine selon l'invention est notamment remarquable en ce que les postes de moulage comportent chacun un moyen d'éjection des produits finis, tandis qu'un dispositif rotatif de transfert (II) est prévu entre ledit appareil de réchauffage (I) et lesdits postes de moulage (1a, 1f) pour le transfert des préformes réchauffées. Avantageusement, le dispositif de transfert (II) entre l'appareil de réchauffage (I) et les postes de moulage (III) se présente sous la forme d'une roue coaxiale à l'arc de cercle sur lequel sont disposés les postes de moulage (III), ladite roue étant pourvue de moyens (11') porte-préformes régulièrement répartis sur un cercle pour prendre chacune une préforme réchauffée et pour la déposer dans un moyen de réception (23) d'un poste de moulage (1a, 1f).

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