The injection-blow-moulding mould comprises: a punch (1) having a blow opening (3) connected to a first conduit (5) which is in communication with a first source of pressurised gas supply (6) configured to supply pressurised gas through the blow opening (3) at an overpressure (OP) above a blowing pressure (BP) suitable to blow a preform (30a) into a container (30b) and an exhaust opening (4) connected to a second conduit (7) which is in communication with a pressure-limiting device set at the blowing pressure (BP); a blow-moulding cavity (2) configured to receive therein the punch (1) with a hot and soft preform (30a) arranged thereon; and a cooling device associated to the blow-moulding cavity (2). Gas inside the container (30b) exceeding the blowing pressure (BP) is allowed to escape through the exhaust opening (4) thereby a cooling gas stream is created from the blow opening (3) to the exhaust opening.
The injection-blow-moulding mould comprises: a punch (1) having a blow opening (3) connected to a first conduit (5) which is in communication with a first source of pressurised gas supply (6) configured to supply pressurised gas through the blow opening (3) at an overpressure (OP) above a blowing pressure (BP) suitable to blow a preform (30a) into a container (30b) and an exhaust opening (4) connected to a second conduit (7) which is in communication with a pressure-limiting device set at the blowing pressure (BP); a blow-moulding cavity (2) configured to receive therein the punch (1) with a hot and soft preform (30a) arranged thereon; and a cooling device associated to the blow-moulding cavity (2). Gas inside the container (30b) exceeding the blowing pressure (BP) is allowed to escape through the exhaust opening (4) thereby a cooling gas stream is created from the blow opening (3) to the exhaust opening.
The invention relates to a mould comprising at least one row of moulding cavities arranged in a base plate (5), each row of cavities including various injection cavities (1) and various blow cavities (2) which are alternately arranged and mutually aligned, with blow cavities (2) on opposite ends of the row. The injection cavities (1) are formed individually in respective injection blocks (3) and the blow cavities (2) are formed individually in respective blow blocks (4). The injection blocks (3) and the blow blocks (4) are separate from each other and project from the base plate (5). The injection blocks (3) are heated by heating means outside the base plate (5), and the blow blocks (4) are cooled by a cooling fluid circulating via cooling conduits (7a) arranged inside the blow blocks (4).
17 - Rubber and plastic; packing and insulating materials
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Varnish; Lacquers; Raw natural resins; Synthetic resin colors. Moulds (parts of machines); Machine coupling and transmission components (except for land vehicles); Machine tools. Plastic preforms for the manufacture of bottles. Plastic bottles.
The invention relates to a transferring device for transferring moulded parts applicable to plastic injection moulds. The device comprises a number n of pairs of half-moulds (3) arranged in a first transverse direction (DT1) perpendicular to a longitudinal direction (LD) for opening - closing the mould and supported in slides (2) operated to be moved in a second transverse direction (DT2) perpendicular to said first transverse direction (DT1) between the open half -mould positions and the closed half -mould positions, and several a number n of cores (6) aligned in the first transverse direction (DT1) and operated to be transferred in said longitudinal direction (LD) between open mould position and closed mould position, and in the first transverse direction (DT1) between several operating positions. The slides (2) are supported in an ejecting plate (1) having an elongated slot (5) in the first transverse direction (DT1), through which the cores (6) are inserted and shifted. Moulded parts (P) are transferred by the cores (6) between said operating positions.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Machines and machine tools; moulds (parts of machines), machine coupling and transmission components (except for land vehicles). Building construction; repair; installation services. Scientific and technological services and research and design relating thereto.
10.
MOULD AND METHOD FOR MANUFACTURING BICOMPONENT PREFORMS BY OVERMOULDING, AND THUS OBTAINED BICOMPONENT PREFORM
A mould has a primary moulding cavity (1) connected to a first hot channel (10) for supplying a primary moulding compound, an overmoulding cavity (2) connected to a second hot channel (20) for supplying an overmoulding compound, and a punch (3) designed to be introduced first into said primary moulding cavity (1) for moulding a first layer (P1) of primary moulding compound, and then to be introduced, together with said first layer (P1) arranged thereon, into said overmoulding cavity (2), for overmoulding a second layer (P2) made of an overmoulding compound. At least one supporting member (4) projects from an inside surface of the primary moulding cavity (1) so as to contact said punch (3) and support same during at least part of the operation during which the first layer (P1) is moulded.
B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons
11.
MOULD AND METHOD FOR MANUFACTURING DOUBLE-LAYERED PREFORMS BY OVERMOULDING, AND DOUBLE-LAYER PREFORM
A mould comprises a first moulding cavity (1) connected to a first hot channel (10) for supplying a primary moulding compound, a second overmoulding cavity (2) connected to a second hot channel (20) for supplying an overmoulding compound, and a punch (3) designed to be introduced first into said first cavity (1) for moulding a first layer (P1), and then to be introduced, with said first layer (P1) thereon, into said second cavity (2) for overmoulding a second layer (P2). At least one supporting member (4) is arranged so as to support the punch (3) relative to the first cavity (1) during the entire operation during which the first layer (P1) is moulded. An aperture left in the first layer (P1) by the supporting member (4) is filled and/or covered by the second layer (P2).
B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons
B65D 85/80 - Containers, packaging elements or packages, specially adapted for particular articles or materials for edible or potable liquids, semiliquids, or plastic or pasty materials for milk
