| 摘要 |
The invention relates to a crimping head that comprises at least one crimping roller for crimping the lid of a food can. The roller is guided along a path that surrounds the can by means of a support piece that includes a hub rotatable about the axis of the crimp head, together with a head carrying a stub axle on which both a cylindrical wheel running on a cam surface and a bulging wheel running on a counter-cam surface are mounted about a common axis, the counter-cam surface being inclined at a small angle. The position of the stub axle together with the wheels is adjustable along the axis so as to take up any slack in guidance.
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