| CPC B21D 51/32 (2013.01) [B21D 51/2661 (2013.01)] | 20 Claims |
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1. A can seamer comprising:
a frame;
a lower chuck rotatably coupled to the frame;
an upper chuck rotatably coupled to the frame, one of the upper chuck and the lower chuck movable so as to releasably engage a can and a cap therebetween, the upper chuck rotatably coupled to an axle having an axle axis of rotation;
a first seam forming assembly including a first rotating shaft, rotatable relative to the frame and positioned to a first side of the upper chuck, with a first roller attached thereto at a lower end thereof;
a second seam forming assembly including a second rotating shaft, rotatable relative to the frame and positioned to a second side of the upper chuck, with a second roller attached thereto at a lower end thereof,
a seam drive assembly comprising
a cam rotatable about the axle axis of rotation, the cam having an outer surface;
a first roller follower assembly coupled to a first end of the first rotating shaft, and including a first roller follower configured to follow the outer surface of the cam, the first follower being biased against the outer surface of the cam;
a second roller follower assembly coupled to a first end of the second rotating shaft, and including a second roller follower configured to follow the outer surface of the cam, the second roller follower being biased against the outer surface of the cam;
a cam transmission assembly comprising
a drive gear rotatably coupled to the axle;
an idler assembly having an idler axle that is spaced apart from the axle, and including a first idler gear that engages the drive gear, and a second idler gear, the first and second idler gears being rotatably coupled to the idler axle; and
a cam gear rotatably coupled to the cam and the cam gear positioned so as to engage the second idler gear; and
a motor having an output shaft, with the output shaft being rotatably coupled to the axle.
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