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US 7,678,304 B2Granted
Apparatus for blow moulding of plastic objects
AssigneeS.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A.
InventorsMatteo Zoppas, Giovanni Chiarotto
Life of this patent
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Abstract
An apparatus for blow moulding of bottles in plastic material comprising a rotating turntable provided with moulds (4) on its outer circumference. Each mould (4) has three moulding forms (5, 6, 7) that can be controlled separately during the parison blowing operations so as not to blow those forms that may not have been supplied with parisons (12).
Claims6
A blow molding apparatus for plastic objects, in particular for PET bottles, usable with parisons, comprising;
- a plurality of molds arranged along a circumference capable of rotating about a first axis, each mold comprising at least two semi-molds capable of opening and closing to form mold forms of said objects,
- a system for opening and closing the semi-molds by a relative rotational movement between the respective semi-molds about a second axis perpendicular to the first axis,
- a supply device for supplying said parisons to the molds,
- a control system for regulating said parison supply device, having a controller for regulating the supply of fluid under pressure to the mold forms of each of the molds, in the event of interruption, and for performing a blowing operation only in mold forms in which there is a parison,
- a system for supplying fluid under pressure for the blowing operation of the parisons and for regulating said means suitable to perform the opening and closing operations of the molds, wherein each mold contains at least three mold forms defining coplanar axes of symmetry, and
- a detector which detects the presence of a parison in each mold form.
3 more elements
Dependencies are inferred from the claim text.