A purpose of the present disclosure is to provide a fine pattern transfer mold and a fine pattern molding method that allow high-resolution transfer of a fine pattern to the interior of a hollow product by integral molding. In a product formation chamber that is formed between a cavity and a core pin member having a predetermined portion at which a fine pattern original plate is fixed by closing of a mold body, a gate into which a molten resin material flows from a hot runner member has an opening that is located outside an end of a fixed surface of the fine pattern original plate in a horizontal direction of the fixed surface and that faces the end of the fixed surface, an injection nozzle of the hot runner member and the gate are directly coupled together, and the hollow product is integrally molded by the resin material flowing from the gate.

A purpose of the present disclosure is to provide a fine pattern transfer mold and a fine pattern molding method that allow high-resolution transfer of a fine pattern to the interior of a hollow product by integral molding.

In a product formation chamber that is formed between a cavity and a core pin member having a predetermined portion at which a fine pattern original plate is fixed by closing of a mold body, a gate into which a molten resin material flows from a hot runner member has an opening that is located outside an end of a fixed surface of the fine pattern original plate in a horizontal direction of the fixed surface and that faces the end of the fixed surface, an injection nozzle of the hot runner member and the gate are directly coupled together, and the hollow product is integrally molded by the resin material flowing from the gate.

The invention relates to an impregnation mould for manufacturing a turbine engine part, made of composite material, obtained from a preform made of a weave of fibres, said mould having first and second portions provided with respective recesses that define a cavity capable of receiving the preform, in which at least one injection means of the mould allows a resin to be injected in order to impregnate said preform, wherein said at least one injection means has a plurality of tubular injection needles, which are capable of extending from at least one of the first and second recesses to penetrate at least the weave of the preform in order to allow resin to be injected.

The disclosure relates to an injection nozzle (1) suitable for injection molding of thermoplastic materials, in particular polyolefin materials, the injection nozzle (1) comprising a housing (2) comprising a sleeve-shaped rear section (3) and a thereto coaxially arranged sleeve-shaped front section (4) surrounding a central passage (5) extending in an axial direction (z) forming part of a melt channel (6). In the central passage (5) a needle (7) is arranged movable in the axial direction (z) between a retracted open position and an extended closed position in which a gate (8) at a tip (9) of the front section (4) is closed by a front end (10) of the needle (7) in a sealing manner. A spacer (11) is arranged between the rear section (3) and the front section (4) defining a total length of the housing (2) in the axial direction (z).

The disclosure relates to an injection nozzle (1) suitable for injection molding of thermoplastic materials, in particular polyolefin materials, the injection nozzle (1) comprising a housing (2) comprising a sleeve-shaped rear section (3) and a thereto coaxially arranged sleeve-shaped front section (4) surrounding a central passage (5) extending in an axial direction (z) forming part of a melt channel (6). In the central passage (5) a needle (7) is arranged movable in the axial direction (z) between a retracted open position and an extended closed position in which a gate (8) at a tip (9) of the front section (4) is closed by a front end (10) of the needle (7) in a sealing manner. A spacer (11) is arranged between the rear section (3) and the front section (4) defining a total length of the housing (2) in the axial direction (z).

The invention relates to an impregnation mould for manufacturing a turbine engine part, made of composite material, obtained from a preform made of a weave of fibres, said mould having first and second portions provided with respective recesses that define a cavity capable of receiving the preform, in which at least one injection means of the mould allows a resin to be injected in order to impregnate said preform, wherein said at least one injection means has a plurality of tubular injection needles, which are capable of extending from at least one of the first and second recesses to penetrate at least the weave of the preform in order to allow resin to be injected.