Apparatus for shaping sheet material
AssigneeCovrad Limited
InventorNorman Philip Deane
Life of this patent
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Abstract
Apparatus for shaping sheet material such as metal foil includes co-operating rollers with teeth, between which the sheet material is fed. The teeth shape the sheet to form corrugations, and projections on the flanks of the teeth form patterns on the corrugations. In order to free the shaped sheet from the teeth, resilient material projects from the flanks of the teeth and urges the sheet away from the flanks after a shaping operation. The invention is intended for use in forming the secondary heat exchange surfaces in aluminium radiators.
Claims11
Apparatus for shaping sheet material, comprising two co-operating rollers each having profiled surfaces, the rollers being arranged to receive sheet material between the profiled surfaces during rotation of the rollers for forming the material into a shape dictated by the shape of the profiled surfaces, the profiled surfaces being shaped to include teeth and each tooth having flanks, the flanks being shaped to include raised portions to impart a corresponding pattern on the material, and resilient means being provided along portions of the flanks of the teeth for urging the sheet material away from the teeth after a shaping operation.
Dependencies are inferred from the claim text.