AIR GAP DIE AND APPARATUS FOR MANUFACTURING CORE LAMINATION ADOPTING THE SAME

摘要

PURPOSE: An air gap die and apparatus for manufacturing core lamination adopting the same is provided to proceed smoothly the blanking of the metal strip by preventing rising of air gap chip deviated of the air gap die. CONSTITUTION: The air gap die(140) of the stacked core manufacturing device comprises the hollow(142) In the hollow, the air gap punch stamping the air gap region of the metal strip is inserted. In the inner circumference of hollow, a plurality of retain grooves is formed in the longitudinal direction.