Method and apparatus for the detection of misformed curls in can ends.

摘要

A method and apparatus for the detection of misformed curls in can ends and other closures utilizing a magnetic sensor located above the rotating edge of the can end for generating first and second electrical signals. The first electrical signal indicates that the portion of the rim of the closure is of normal configuration and the second electrical signal indicates that the portion of the rim deviates from the normal configuration thereby indicating a misformed curl. The second signal also indicates the size of the misformed curl and can be set so as to reject can ends having misformed curls greater than a predetermined size.