Device for moulding a bladed part of a turbomachine
AssigneeSafran Aircraft Engines
InventorsMaxime Marie Desire Blaise, Hubert Jean Marie Fabre, Jeff Pote
Life of this patent
Estimating the term…
Abstract
A device for moulding at least one bladed part of a turbine engine, including a base; a mould formed from a plurality of parts nested inside one another, this mould being applied to the base. A first seal is mounted between the mould and the base; and a bell is mounted on the mould and around the mould, this bell being applied to the base. A second seal is mounted between the bell and the base, this bell being configured to be held tight against the base and having interior surfaces engaging by wedge effect with complementary exterior surfaces of the mould in order to apply a clamping force on the parts of this mould.
Claims17
A device for moulding at least one bladed part of a turbomachine, the device comprising at least one internal cavity configured to receive a fibrous preform, one edge of which is covered with a metal shield, and the device being configured to allow a resin to be injected into the at least one internal cavity in order to impregnate said preform and to ensure that the shield is fixed to said edge, wherein the device comprises:
- a base,
- a mould formed from parts that are interlocked with each other, the mould defining said at least one internal cavity and being configured to enclose said preform integrally, said parts comprising at least a lower shell in contact with the base and having portions protruding in a direction parallel to the base, the lower shell being configured at least to close one end of a portion of the at least one internal cavity defined in a plane perpendicular to the base, the mould being applied to the base and first sealing device being mounted between the mould and the base,
- a bell-shaped dome mounted on the mould and around the mould, the bell-shaped dome being applied to the base and second sealing device being mounted between the bell-shaped dome and the base, the bell-shaped dome being configured to be held clamped against the base and comprising inner surfaces cooperating with complementary outer surfaces of the mould in order to apply a clamping force on the parts of the mould by corner effect wherein the inner surfaces of the bell-shaped dome slide and abut with the outer surfaces of the mould to hold the bell-shaped dome and the mould together, the mould, the base and the bell-shaped dome being distinct from each other;
- an evacuation port configured for an evacuation of an excess of resin and also to draw a vacuum from the at least one internal cavity, the evacuation port being located on an upper end of a lateral wall of the bell-shaped dome, said lateral wall being perpendicular to a planar lower surface of the base when said bell-shaped dome is applied to the base, and
- wherein the mould comprises a lower end mounted and engaged in a central recess of an upper surface of the base, the lower end of the mould comprising a complementary shape configured to engage by male-female interlocking in the central recess.
A device for moulding at least one bladed part of a turbomachine, the device comprising at least one internal cavity configured to receive a fibrous preform, one edge of which is covered with a metal shield, and the device being configured to allow a resin to be injected into the cavity in order to impregnate said preform and to ensure that the shield is fixed to said edge, wherein the device comprises:
- a base;
- a mould formed from a set of parts that are interlocked with each other, the mould defining said at least one internal cavity and being configured to enclose said preform integrally, said parts including at least:
- a lower shell made in one part and comprising at least:
- a first and a second protruding portions parallel to a lower surface of the base;
- a third protruding portion perpendicular to the first and second protruding portions;
- and
- a spacer fitted to the lower shell, the spacer being made in one part and comprising:
- a first portion which is parallel to the third protruding portion of the lower shell and which is bearing against said third protruding portion;
- and
- a second portion which is parallel to one of the first and second protruding portions of the lower shell and which is bearing against said first or second protruding portion, said second portion of the spacer closing an end surface of the at least one internal cavity perpendicular to the base and to the first or second protruding portion of said lower shell against which the second portion is bearing,
- the mould being applied to the base and first sealing device being mounted between the mould and the base, and
- a bell-shaped dome mounted on the mould and around the mould, the bell-shaped dome being applied to the base and second sealing device being mounted between the bell-shaped dome and the base, the bell-shaped dome being configured to be held clamped against the base and comprising inner surfaces cooperating with complementary outer surfaces of the mould in order to apply a clamping force on the parts of the mould by corner effect wherein the inner surfaces of the bell-shaped dome slide and abut with the outer surfaces of the mould to hold the bell-shaped dome and the mould together.
Dependencies are inferred from the claim text.