Patent ID: 6883410

Claim:
A press apparatus for forming first holes and second holes in a sheet by punching said sheet, comprising: a die unit having a die assembly, said die assembly having a punch and a die for punching the first and second holes in said sheet, the punch and the die defining a punching axis being inclined at an acute angle with respect to a surface of said sheet; a feed mechanism for feeding said sheet to said die unit along a longitudinal direction of said sheet; and a table unit supporting said die unit and rotating only said die unit with respect to the sheet so as to direct the punching axis in opposite directions to form the first and second holes in an inclined fashion directed in the opposite directions; wherein the feed mechanism includes a first coil stand for supporting a first coil of the sheet, and a second coil stand for supporting a second coil of the sheet; the feed mechanism feeds the sheet in both directions between the first and second coil stands; the table unit rotates the die unit after the feed mechanism completely feeds the sheet in one of the directions; the table unit includes an X-Y table mechanism for moving the die unit in a horizontal plane and a θ table for rotating the die unit; and the θ table enables the punching axis of the punch and the die to be directed in the opposite directions.