Impregnation mould having needles for producing a part from a woven preform
AssigneeSafran Aircraft Engines
InventorsVincent Bernard Serge Most, Nicolas Cambyse Ashtari
Life of this patent
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Abstract
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.
Claims9
A set for manufacturing a turbine engine part,
- wherein said set comprises a preform and an impregnation mould,
- wherein said preform is formed by a weave of fibres of composite material having strands for being impregnated in said impregnation mould,
- wherein said mould has a first mould portion of which a first recess is substantially complementary to a first surface of the preform, and a second portion of which a second recess is substantially complementary to a second surface of the preform, said first and second portions being capable of being attached to one another at the time said mould is closed so that the first and second recesses define a cavity 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, for extending from at least one of the first and second recesses substantially with respect to at least one of the first and second surfaces and which are configured with tapered ends to penetrate at least between the strands of weave of the preform to allow resin to be injected while conveying said resin at least to the centre of said weave after the closure of said mould,
- wherein the needles of the mould are retractable into at least one of the first and second mould portions, and are movable towards the preform relative to at least one of the first recess and second recess in said portions between an extended position in which said needles penetrate at least the weave and a retracted position in which said needles are withdrawn from the preform, and
- wherein each needle of the first plurality or second plurality of needles is rigidly connected to at least one first or second block, respectively, the needles of said first or second block being substantially parallel to one another, and said first or second block being slideably movable towards the preform in parallel with a direction of the needles by a corresponding actuator in the corresponding first or second mould portion.
Dependencies are inferred from the claim text.