Blowing machine with double cavity moulds

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 49/36 (2006.01) B29C 49/42 (2006.01) B29C 49/56 (2006.01) B29C 49/58 (2006.01) B29C 49/06 (2006.01) B29C 49/12 (2006.01)

Patent

CA 2376267

The invention concerns a rotary machine for blowing thermoplastic containers starting with a previously injected preform, comprising several blowing stations (10) each of which can bear a double cavity mould (16), wherein each station comprises a blowing unit (26) which is fixed on a mount frame element (22) and provided with two blow nozzles (24). The invention is characterised in that the machine can be transposed into a single cavity configuration wherein each station bears a single cavity mould (36), and the blowing unit (26) comprises a second position for being fixed on the mount frame element wherein one of the nozzles (24) is arranged to correspond with the main axis (A4) of the single moulding cavity (38) of the single cavity mould (36).

L'invention propose une machine rotative de soufflage de récipients thermoplastiques à partir d'une préforme préalablement injectée, du type comportant plusieurs postes de soufflage (10) dont chacun peut porter un moule bi-empreinte (16), du type dans lequel chaque poste comporte un bloc de soufflage (26) qui est fixé sur un élément de bâti (22) et qui est muni de deux tuyères de soufflage (24), caractérisée en ce que la machine peut être transposée dans une configuration mono-empreinte dans laquelle chaque poste porte un moule mono-empreinte (36), et en ce que le bloc soufflage (26) comporte une seconde position de fixation sur l'élément de bâti dans laquelle une des deux tuyères (24) est agencée en correspondance avec l'axe principal (A4) de l'unique cavité de moulage (38) du moule mono-empreinte (36). En ce qui concerne les codes à deux lettres et autres abréviations, se référer aux "Notes explicatives relatives aux codes et abréviations " figurant au début de chaque numéro ordinaire de la Gazette du PCT.

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