Sheet feed assembly, e.g. transformer sheets to a hole punch machine, has two drives at the feed unit without tension on the sheet between them to prevent slippage when they are coated with a varnish

摘要

The assembly (10) to feed flat materials (12) to a hole punch machine (14) and the like, e.g. transformer sheets, has a feed unit (16) with a drive (24) to insert the flat sheet into the machine by a given length. A second drive (26) is coupled electrically to the first, giving a synchronized drive action without tensile forces acting on the sheet material between the drives.