Apparatus for making containers by blow-moulding plastic...

B - Operations – Transporting – 29 – C

Patent

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Details

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

Patent

CA 2214099

An apparatus for making containers (13) such as bottles, pots or any other hollow body by heat treating then blow-moulding plastic parisons (1). The apparatus comprises at least two book moulds (41, 44) arranged around the edge of a carousel. Each mould includes at least two mould cavities. The apparatus further comprises a device for heat treating the parisons, in which the pitch (P1) between the longitudinal axes of two consecutive parisons is smaller than the pitch (P2) between the longitudinal axes of two adjacent cavities in one mould, as well as means (5A) for varying the parison pitch between a conveyor and a mould. Said pitch varying means (5A) comprise at least two adjacent movable members (52) that can be arranged at the first pitch (P1) when they are facing the conveyor, and at the second pitch (P2) when they are facing the means (5B) for transferring the parisons to the moulds.

L'invention est relative à une installation de fabrication de récipients (13), tels que des bouteilles, des pots, ou tout autre type de corps creux, par conditionnement thermique, puis soufflage de préformes (1) en matière plastique. L'installation comporte au moins deux moules (41, 44) de type portefeuille disposés à la périphérie d'un carrousel. Chaque moule comprend au moins deux cavités de moulage. Elle comporte un dispositif de conditionnement thermique des préformes dans lequel le pas (P1) entre les axes longitudinaux de deux préformes successives est inférieur à celui (P2) entre les axes longitudinaux de deux cavités adjacentes d'un même moule, et des moyens (5A) de changement de pas des préformes entre le dispositif d'entraînement et un moule. Elle est caractérisée en ce que les moyens (5A) de changement de pas comportent au moins deux organes mobiles (52) adjacents agencés pour pouvoir être mis au premier pas (P1) lorsqu'ils sont en regard du dispositif d'entraînement, et au second (P2) lorsqu'ils sont en regard des moyens de transfert (5B) des préformes vers les moules.

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