| 摘要 |
Described is a seaming machine for use with a container ( 22 ) and an end closure ( 28 ). The machine includes a seaming head ( 62 ) with multiple shaft assemblies ( 100 ) and a lifter table ( 60 ) located below the seaming head ( 62 ) and including multiple container stations. During use, the lifter table ( 60 ) and seaming head ( 62 ) rotate in unison about the centerline of a spindle ( 64 ). A single shaft assembly ( 100 ) is provided at each station to perform a two-step seaming operation on its corresponding container ( 22 ). In one embodiment, a seaming cam ( 66 ) is located above the seaming head ( 62 ) for moving first and second cam followers ( 116 ), ( 118 ) in the shaft assembly ( 100 ). In another embodiment, the cam followers ( 116 ) and ( 118 ) have a master/slave relationship dependent on which step of the seaming operation is being conducted. In another embodiment, a single piece plate ( 122 ) is used in a cover feed assembly ( 120 ) and provides end closures ( 28 ) to a make-up point ( 30 ).
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