Assembly and method for the production of a fiber composite workpiece

Patent metadata

Field	Value
Publication number	US-10112353-B2
Application number	US-201514850252-A
Country	US
Kind code	B2
Filing date	Sep 10, 2015
Priority date	Sep 10, 2014
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

An assembly for producing a fiber composite workpiece having a base tool, including a first tool part and a second tool part, arranged relative to one another either in a closed position in which they enclose an internal space, or in an open position wherein a preform can be mounted in the internal space and maintained there in a predetermined shape. The base tool includes a connection to convey matrix material into the internal space, and has a device for holding the first and second tool parts together in a closed position. A tool insert is provided which is separate from the base tool, the tool insert being mounted in the internal space of the base tool, and the tool insert including a cavity for accommodating a preform and a shaping surface, facing the cavity, for maintaining the preform in a predetermined shape.

First claim

The invention claimed is:

1. An assembly for the production of a fiber composite workpiece comprising:
a base tool, which includes a first tool part and a second tool part,
wherein the first and second tool parts can be arranged relative to one another in a closed position, in which they enclose an internal space, and in an open position, in which the internal space is open to a surrounding environment,
wherein the base tool is configured in such a way that a preform can be mounted in the internal space and maintained in a predetermined shape there, and
wherein the base tool includes a matrix connection to convey matrix material into the internal space,
a holding device, which is configured to hold the first tool part and the second tool part, in a relative closed position, and
a tool insert formed separate from the base tool,
wherein the tool insert is mounted in an internal space of the base tool, and
wherein the tool insert includes a cavity for accommodating a preform, and a shaping surface that faces the cavity, for maintaining the preform in a predetermined shape;
wherein the tool insert includes a first insert part and a second insert part,
wherein the shaping surface includes a first surface part and a second surface part,
wherein the first surface part is provided on the first insert part, and the second surface part is provided on the second insert part,
wherein the first and second insert parts are mounted in the internal space of the base tool in such a way that the first and second surface parts face one another and enclose the cavity between them, wherein the cavity corresponds to the shape of the fiber composite workpiece to be produced,
wherein the tool insert includes at least one of a third insert part and a fourth insert part, the third insert part lying against the first insert part and supporting the first insert part in relation to the base tool, and the fourth insert part lying against the second insert part and supporting the second insert part in relation to the base tool.

2. The assembly according to claim 1 , wherein at least one of the first and the second insert part include an outer surface facing at least one of the first and second surface part, the shape of the outer surface corresponding to the at least one of the first and second surface part.

3. The assembly according to claim 1 , wherein the first and second insert parts are formed from a first material and a second material, respectively, which is one of the same as or different from the other, and
wherein the first material and the second material are both a solid.

4. The assembly according to claim 1 , wherein the third and the fourth insert parts are formed from a third material and a fourth material, respectively, which is one of the same as or different from the other, and wherein the third material and the fourth material are each one of a solid, a compacted pourable solid, a liquid or a gas, or a combination thereof.

5. The assembly according to claim 1 , wherein, in the tool insert, a matrix duct is provided to convey matrix material from the matrix connection either to or along the cavity, or both.

6. The assembly according to claim 1 , wherein, in the tool insert, a duct is provided to convey one or more of a heating medium and a cooling medium through the tool insert.

7. The assembly according to claim 1 , wherein the shaping surface is provided with negative forms for functional elements to be provided in the fiber composite workpiece to be produced.

8. The assembly according to claim 1 , wherein a preparation device is provided, which is configured to hold the tool insert in such a way that the cavity is accessible and a preform can be introduced therein.

Assignees

• Airbus Operations Gmbh

Inventors

• Fastert Claus
• Seegel Hauke
• Willamowski Michaela

Classifications

• B29K2105/0809

  Fabrics · CPC title

• B29C70/541 Primary

  Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement (positioning inserts in moulds B29C33/12; lay-up on a mould B29C70/30) · CPC title

• B29C70/48

  and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM] {, e.g. by vacuum} · CPC title

• B29C33/306 Primary

  Exchangeable mould parts, e.g. cassette moulds, mould inserts (moulds with exchangeable mould parts for injection moulding B29C45/2673; mounting of exchangeable mould inserts for injection moulding B29C45/2675) · CPC title

• B29C70/548

  using distribution constructions, e.g. channels incorporated in or associated with the mould · CPC title