| 摘要 |
<p>CAN TRIMMING APPARATUS A can end trimmer is disclosed including a main frame, a main rotary shaft mounted for rotation on the main frame and a plurality of self-contained cutter unit assemblies detachably connectable to the main shaft. Each cutter unit assembly includes first and second rotary cutter knives having circular cutting edges with one knife being mounted for movement between a first position having its cutting edge spaced from the cutting edge of the other knife and a second position having its cutting edge overlying the cutting edge of the other knife. A rotary vacuum chuck is mounted for cam controlled reciprocation toward and away from the cutter members for positioning a can end over the movable rotary knife when the knife is in its first or open position, subsequent closure of the knife trims the can end and subsequent opening of the knife permits the holder to retract the finished can from the cutting position; a unique stripper ring discharges the scrap ring to a separate receiving area. Finger discs mounted on the main shaft provide unique work handling functions for removing unfinished cans from an infeed means and positioning the cans for engagement by the vacuum chuck and for aiding in discharge of finished cans to an outfeed means. Control means for the cutter unit is supported by the main shaft or frame and the entire cutter unit can be removed for maintenance or placement with minimum difficulty. Another embodiment of the invention employs a central cutter knife and planetary cutter knives movable to overlying relation with respect to a cutting edge of the central knife for effecting the trimming of can ends positioned over the planetary knife members by automatic handling means similar to that of the first embodiment.</p> |
