Knockout used for necking metal container, die system for necking metal container, and method for necking metal container

摘要

A knockout has a support surface, and the support surface has a first knockout outer diameter and a second knockout outer diameter. The first knockout outer diameter 30 supports the first inner diameter 22 of the container side wall 14 when the knockout 18 is inserted into the opening 12 of the metal container 10 and when the metal container 10 is necked by the necking die 16. can do. The second knockout outer diameter 32 supports the second inner diameter 24 of the container side wall 14 when the knockout 18 is inserted into the opening 12 of the metal container 14 and when the metal container 10 is necked by the necking die 16. can do. The first knockout outer diameter 30 is larger than the second knockout outer diameter 32. [Selection] Figure 1