METHOD AND DEVICE FOR FORMING CAN BODY Russian patent published in 2014 - IPC B21D51/38 B21D22/20 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to forming of can bodies at single-action press. Proposed device comprises upper retainer supporting drawing and shear dies including external and internal pressure bushes surrounding die central piston and equipped with actuating pistons. Said central piston has air vessel connected via air channels that make air cushions for external pressure bush. Note here that external pressure bush received the same controlled air flow as said vessel or low-pressure air feed unit. Said internal pressure bush has extending head part. With die moving upward, bottom panel puncher dorms central panel, panel wall and chamfer.

EFFECT: higher efficiency.

6 cl, 12 dwg