PLASTIC PRODUCT BLOW MOULDING DEVICE Russian patent published in 2009 - IPC B29C49/78 B29C49/36 

FIELD: mechanics.

SUBSTANCE: device for blow moulding of plastic bottles, particularly, from poly(ethylene terephthalate) preforms, comprises a rotary turntable furnished with multiple moulds arranged along the turntable edges to revolve about its axis (X). Every mould comprises, at least, two half-moulds arranged to be opened and closed to form cavities, primarily three cavities with their axes of symmetry located in one plane. The device comprises also the appliance for opening and closing said half-moulds by rotating them about second axis (Y) perpendicular to first axis (X), and the appliance designed to the preforms to the moulds, control system designed to control preforms and fluid medium feed. Aforesaid cavities are controlled separately in blowing so that to inhibit blowing in cavities with no preforms. The control system controls feeding fluid medium into the cavities of each mould, allowing blow moulding only in cavities with preforms fed therein. The applicant describes also the PETP bottle blow moulding method.

EFFECT: reliability, flexibility reduced amount of rejects.

6 cl, 13 dwg