Strip forming method and apparatus

摘要

In a method of forming hollow cylindrical bodies from strip material, the strip material (4) is introduced to a location with a first surface thereof facing an array of forming elements (5, 6, 7, 11) arranged along an arcuate path. Relative movement is effected between the elements and a cylindrical mandrel (3) to engage the mandrel with a second surface of the strip opposed to the first and force the first strip surface into engagement with the elements. Subsequent relative driving rotation between the mandrel and array moves the strip to form it around the mandrel into a cylindrical shape. Apparatus is disclosed for performing the method.