Embossing a flat metal blank (method, tool and object)

Apparatus for embossing an artifact (11, 11′) into a wall of a three-piece-can (15), the tool having

• (a) several groups of transport rollers (20, 22, 24), each having top and bottom roller;
• (b) a rotatable embossing roller pair (3D), having embossing features (32a, 32b) at a certain position in their outer surface, and being mechanically coupled with a servo motor or drive (38);
• (c) the embossing roller pair (3D), and the servo (38) placed between the last (24) and the one prior to the last transport roller group (22), to act on flat blanks or sheets (s);
• (d) a controller (40) for controlling the servo (38) and receiving a referential signal (55,55a), indicative of a front edge (SI), each of the flat blank/sheet passing a sheet detector (50) with a feeding speed (vs), implied to the blank/sheet by the transport rollers (20, 22, 24).

Apparatus for embossing an artifact (11, 11′) into a wall of a three-piece-can (15), the tool having

• (a) several pairs of transport rollers (20, 22, 24), each having top and bottom roller;
• (b) a rotatable embossing roller pair (30), each roller having an embossing feature (32a,32b) at a certain position in an outer surface thereof, and being mechanically coupled to synchronize the embossing features upon rotation with a servo drive (38);
• (c) the embossing roller pair (30), and the servo (38) being placed between the last (24) and the one prior to the last transport roller pair (22), to act by embossing flat blanks or sheets (s);
• (d) a controller (40) for controlling the servo (38) to adjust the embossing features (32a, 32b) onto a certain, given position on each blank/sheet having a feeding speed (vs), implied to each blank/sheet by at least some of the transport rollers (20, 22, 24).