Feeding device for die cutting machine and applicable to printed products with different widths

The invention discloses a feeding device for a die cutting machine and applicable to printed products with different widths. The feeding device for the die cutting machine comprises a supporting platform and a plurality of groups of driving pulleys arranged on the supporting platform, wherein the tops of the driving pulleys are higher than the supporting surface of the supporting platform; a Jacking rod horizontally placed is arranged at the front part of the supporting platform; a jacking cylinder is arranged at each of the two ends of the jacking rod; the cylinder barrels of the jacking cylinders are fixed with the supporting platform; the tops of the piston rods of the jacking cylinders are fixed with the end part of the jacking rod; a front stopping block is arranged at the front part of the supporting platform; a rear stopping block is fixed at the part above the supporting platform; at least two pairs of sliding shafts which are coaxial are fixed at the two ends of the rear stopping block separately; a