Method and an apparatus for can making
AssigneeGlud & Marstrand A/S
InventorEsad Zubcevic
Life of this patent
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Abstract
A method and an apparatus for making cans from three pieces of a sheet metal, namely a bottom part, a body part and a closure, the method and apparatus enabling cost efficient production of cans in small batch sizes. The apparatus has means for forming a tubular can body from a blank of sheet material without internally supporting the tubular form. The apparatus further has means for subsequently forming the tubular can body into a cross sectional shape without the use of a dedicated press tool, means for beading, curling and flanging the can body and means for attaching the bottom part and the closure to the can body.
Claims22
A method of making a tubular can body from a blank of sheet material having a pair of opposite co-extending rim portions, said method comprising
- gripping the rim portions by gripping means being actuated by power driven means controlled by a controller in a way enabling re-defining the movement without mechanical reconfiguration,
- mutually moving the gripping means so as to bring the rim portions into adjacent positions, and
- interconnecting the rim portions of the blank by a seam so as to form the tubular can body, while a major intermediate portion extending between the rim portions remains unsupported, at least internally.
An apparatus for making a tubular can body from a blank of sheet material having a pair of opposite co-extending rim portions, said apparatus comprising
- gripping means for gripping said rim portions,
- means for mutually moving the gripping means so as to bring the rim portions into adjacent positions, and
- means for interconnecting the rim portions of the blank by a seam so as to form the tubular can body, while a major intermediate portion extending between the rim portions remains unsupported, at least internally,
- wherein the means for mutually moving the gripping means is actuated by power driven means controlled by a controller in a way enabling re-defining the movement without mechanically reconfiguring of the apparatus.
Dependencies are inferred from the claim text.