The so-called two-way duplex slitting is to complete the longitudinal can body circumference splitting in one pass and the horizontal can body height splitting in two passes.

Duplex slitter machine working process: feeding by suction sheet → double sheet induction → double sheet rejection → transmission and induction counting → positioning → first shearing → reversing transmission → positioning → second shearing → sheet collection.

At present, most high-speed welding machines use mechanical arms to automatically add sheet materials, but if the sheet materials are manually added to the welding machine, it is necessary to prevent the can body sheet from being contaminated and the cut edge from rusting due to the failure to use the cut sheet in time, too long or improper placement, which affects the welding quality.