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Electromagnetic Sheet Metal Feeder

For a continuous feeding of sheet metals in forming press lines mechanical roll and gripper feeders are used. Typical resulting problems are the damage of the sheet surface due to the mechanical contact. The present contribution deals with the investigations of an electromagnetic material feeder for electric conductive sheet metals. The concept is based on the principle of an asynchronous linear motor. Here the sheet metal acts directly as the secondary part. The new approach was first analysed and designed by means of finite element simulation. With experimental measurements the simulations could be validated using a demonstrator of the electromagnetic feeder. The results indicate that the feeding forces of partially 1000 N can be doubled in comparison to conventional mechanical roll feeders.