Composite Stacking System (CSS)

Integrated system for automated lay-up

In the manufacture of modern fiber composites, resin infusion technology is of special interest. This process involves making a lay-up preform of dry fiber semi-finished materials (such as carbon fiber or glass fiber mats) and subsequently impregnating it with resin and heat consolidating it in an oven. 

A particular challenge in this process chain lies in the production of the lay-up preforms from fiber materials. In this step, the individual layers are placed and fixated in a defined orientation in the shape-giving mold tool. In order to ensure the quality of the resulting workpiece, it is imperative to prevent the individual layers from slipping and shifting. A vital aspect in the process chain of resin injection technology is the development of suitable, automated fixation technologies. 

 

The Composite Stacking System (CSS) is our contribution to solving this task. The fixation system is conceived for automated operation in the production of stable, shift-free composite lay-up. The performance features include the handling and positioning of pre-cut fiber material parts from a pick-up point to a deposit point, which usually is a mold tool.

Both cured and uncured semi-finished fiber materials can be used.

The CSS as well as the CHS and the 3D-CHS are equipped with our specifically developed vacuum grippers. The integrated individual vacuum gripper control allows the CSS to automatically adapt to varying workpiece geometries. In addition, the Composite Stacking System features pneumatically extendable heating pads. These allow the layers to be fixated in their position in the lay-up production process. The pads are used for applying local heat to the deposited layer in order to activate the binder of the layer and join it to the fiber material underneath.

 

When processing uncured fiber materials, our CSS can be supplemented with a binder applicator. The technology for applying the binder is designed to liquefy the binder material, spray it onto the bottom layer, and heat it after adding the second layer in order to join the two layers. The dot application of the binder material is achieved by an industrial spraying system, which first melts the powder-form binder in a tank and then passes it through a heated conduit to a nozzle. The amount of binder and the intervals at which it is sprayed onto the fiber material can be controlled.

In this way, the system for automated lay-up can be customized to meet all requirements.

 

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Ansprechpartner

Christian
Meiners

Senior Manager, Consulting
Tel: +49 (0) 4402 966 363
Contact

Ansprechpartner

Holger
Mayländer

Chief Sales Officer
Tel: +49 (0) 4402 966162
Contact

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