Patent ID: 7249479
Filing Date: 2007-07-31
Classification: B21C,B21D

Abstract:
1. Apparatus ( 1 ) for forming thin-walled material from an essentially flat piece of material ( 2 ) into a sleeve-like body ( 20 ), with two forming dies ( with fingers ( with centering elements ( wherein the clearance between the centering elements ( 8 , 9 ), when the forming dies ( 3 , 4 ) are open, is so large that the clearance accommodates the flat piece of material ( 2 ) to be formed between the centering elements ( 8 , 9 ) and wherein during the forming process, when the at least one of the forming dies ( 3 , 4 ) is pivoted around the fulcrum ( 5 ) of the forming dies ( 3 , 4 ), front faces ( 21 , 22 ) of the relevant ends of the piece of material ( 2 ) facing away from the fulcrum ( 5 ) of the forming dies ( 3 , 4 ) rest against the centering elements ( 8 , 9 ), which thereby specify and fix the position of the seam of the body that forms.