Method For Producing A Container Body

Abstract

The method forms a blank into the container body. A disc-shaped blank is punched out of a metal sheet. Following the punching process, the two edges of the blank are compressed. The disc-shaped blank thus obtains a symmetrical shape. With any of its two flat sides, the blank can be transported into a forming position, from which it is then formed into the container body. The edges obtain an accurately predetermined shape and can thus be arranged more easily in the desired forming position. Preferably, both edges are machines simultaneously in response to compressing the two edges of the blank.

I claim: 
     
         1 . A method for producing a container body comprising the following steps:
 punching out a disc-shaped blank ( 10 ) from a metal sheet ( 11 ),   compressing the two edges ( 15 ) of the blank ( 10 ),   transporting the blank ( 10 ) into a forming position (P) in a forming device ( 22 ) for forming the blank ( 10 ) into a container body ( 27 ).   
     
     
         2 . The method according to  claim 1 , characterized in that, in the forming position (P), the blank ( 10 ) is arranged between a stamp ( 24 ) and a die ( 23 ) of the forming device ( 22 ). 
     
     
         3 . The method according to  claim 2 , characterized in that, in the forming position (P), the blank ( 10 ) rests with one of its two flat sides ( 13 ) against or in the die ( 24 ) of the forming device ( 22 ). 
     
     
         4 . The method according to  claim 1 , characterized in that both edges ( 15 ) are machined simultaneously in response to the compression of the edges ( 15 ) of the blank ( 10 ). 
     
     
         5 . The method according to  claim 4 , characterized in that the peripheral surface ( 16 ) of the blank ( 10 ) rolls off of a compression tool ( 18 ) in response to the compression of its two edges ( 15 ). 
     
     
         6 . The method according to  claim 5 , characterized in that the compression tool ( 18 ) encompasses a compressed groove ( 19 ), in which the blank ( 10 ) is rolled off. 
     
     
         7 . The method according to  claim 1 , characterized in that the punching burr ( 14 ) of the blank ( 10 ) created in response to the punching is removed by means of the compression. 
     
     
         8 . The method according to  claim 3 , characterized in that the blank ( 10 ) obtains a shape, which is symmetrical opposite a central plane (S), between its two flat sides ( 13 ) by means of the compression. 
     
     
         9 . The method according to  claim 1 , characterized in that a bezel (F) is in each case formed on the blank ( 10 ) by means of the compression at its two edges ( 15 ). 
     
     
         10 . The method according to  claim 1 , characterized in that a circumferential border (V) is in each case formed on the blank ( 10 ) by means of the compression at its two edges ( 15 ).