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Braiding of CFRP components with a reusable core

News International-French

6 Mar 2014

JEC Europe 2014 - Their innovations, including a directly reusable core system and the collaboration of several robots, speed up the cycle time and result in lower costs for the customer.

Braiding allows for high-volume production of hollow CFRP components with superior quality. Munich Composites GmbH has completely automated the fibre lay-up process so that every fibre has the ideal angle, even in complex shapes. Their innovations, including a directly reusable core system and the collaboration of several robots, speed up the cycle time and result in lower costs for the customer.

Braiding requires a near-net-shape core that is overbraided to place the fibres in the geometry of the component. Traditionally, materials such as foam, wax or metal are used for the core. They either remain in the component and add weight, are expensive, or increase the cycle time. Munich Composites GmbH has invented a directly reusable core system that is also suitable for undercuts. The system uses an inflatable core that is removed from the preform before the resin injection, thus extending the lifetime of the core. In the next manufacturing step, the resin is injected with a flexible bladder on the inside, which is pressurized during injection. This results in lower cycle times and higher laminate quality, e.g. higher fibre volume contents.

The near-net-shape core is guided automatically through the centre of the braiding machine by several robots. As the robots collaborate, no manual labour is required during the fibre lay-up stage. This way, every component has the exact same high quality. The company also offers a manufacturing technique suitable for high manufacturing quantities, e.g. in the automotive and sports industries.

More information:www.munich-composites.de
Booth: M31