Device and method for producing fiber preforms

摘要

A method and a device for producing fiber preforms which are, for example, a precursor in the production of fiber reinforced plastic components, are disclosed. The method includes the steps of tensioning the threads or rovings, draping the threads or rovings over a molding tool and attaching the threads or rovings to a fiber preform. A plurality of separate grips grip individual or a plurality of threads or rovings at a plurality of thread transfer points allocated respectively to the individual grippers. The grippers are then moved in substantially parallel paths relative to each other and the threads or rovings are thereby tensioned side by side.

主权项

1. A device for producing fiber preforms, the device comprising:
a plurality of unwind stations for providing a plurality of threads or rovings; a plurality of grippers, each of said plurality of grippers having a maximum position and an assigned thread transfer point and each of said plurality of grippers being individually movable on a plurality of substantially parallel paths between said maximum position and a pick-up position, said pick-up position being at said thread transfer point and being closer to one of said plurality of unwind stations than said maximum position, said plurality of grippers being configured for gripping an origin of one of an individual and a plurality of said threads or rovings; and at least one molding tool configured to be brought between said thread transfer points and at least some of said grippers, wherein said plurality of grippers is configured to assume a plurality of different individual intermediate positions on their respective said path and configured to retain a plurality of respective origins of said plurality of threads or rovings at said individual intermediate positions.