A punch assembly for forming a base in a metal beverage can

摘要

A bottom forming station for forming a metal can having a sidewall and base portion is provided. The bottom forming station comprises a punch sleeve. The punch sleeve comprises a body having a sidewall that defines a bore for securely receiving a punch nose. The punch sleeve sidewall has a first section that corresponds to the shape of at least a portion of a beverage can base. The punch sleeve sidewall has a second section that corresponds to at least a portion of a beverage can sidewall profile. The second surface is integrally coupled with the first surface. The punch sleeve sidewall has a third section that is adapted to communicate with a punch nose and form a slip line that has a junction area in a non-active area. The third section is integrally coupled with the first and second sections.A bottom forming station also comprises a punch nose. The punch nose includes a body having a sidewall. The sidewall has a first section that corresponds to the shape of at least a portion of a beverage can base. The punch nose sidewall has a second section that is integrally coupled with the first section. The punch nose is mechanically coupled within the bore of the punch sleeve with the second surface of the punch nose in communication with the third section of the punch sleeve sidewall such that a slip line is formed with a junction area in a non-active area.