Back to results
US 7,243,520 B2Granted
Stripping assembly
AssigneeCrown Packaging Technology, Inc.
InventorWilliam Woulds
Life of this patent
Estimating the term…
Abstract
A stripping assembly for removal of a can body from a punch in a can bodymaker in which an actuator lifts stripper fingers clear of the can carried on the punch in the forward stroke to avoid damage to the can or can coating. On the return stroke, the actuator piston is disabled so that the fingers close around the punch for stripping the can from the punch.
Claims8
A stripping assembly (10) for stripping a can from a punch in a can bodymaker (1), the assembly (10) comprising:
- a plurality of stripper fingers (12) spaced around an annular housing (32);
- a resilient O-ring (20) for biasing the tips (34) of the fingers (12) radially inwardly from the housing (32) into a central bore (5) of the bodymaker (1);
- a piston (14, 54) within the housing (32) which, in use, when the punch is carrying a can through the bore on the forward stroke, lifts each finger tip (34) clear of the can carried on the punch, against the action of the resilient O-ring (20), and when the punch is on the return stroke, is disabled so as to allow the resilient O-ring (20) to cause the finger tips (34) to close and strip the can from the punch;
- and
- the fingers (12) being mounted upon a resilient O-ring (42) for self-aligning with the cut edge of the can on the return stroke of the punch.
2 more elements
Dependencies are inferred from the claim text.