The invention discloses an improved device for an old-fashioned punching machine. The old-fashioned punching machine comprises an operation platform, a lower die is arranged on the operation table, anupper die is arranged above the lower die, the upper die is mounted on a slider, the slider is driven by a driving device to do downward punching motion, conveying devices are arranged on the portions, on the two sides of the lower die, of the operation platform, each conveying device comprises a front bracket, a rear bracket and a plurality of rollers, and each roller comprises a rotating cylinder and a fixed shaft, wherein the rotating cylinder is mounted on the fixed shaft through a plurality of bearings, the two ends of the fixed shaft are mounted on the front bracket and the rear bracketcorrespondingly, and the gap between the rollers in one conveying device is adjustable. By means of the improved device, the working efficiency of the old-fashioned punching machine is effectively improved, the utilization rate of a plate is improved, meanwhile, the safety of the punching machine can be improved, the advantages of being simple in structure, strong in applicability, reliable in work, high in degree of automation, high in practicability and the like are achieved, double guarantees of the production efficiency and the personal safety are achieved, and the service life of the old-fashioned punching machine is prolonged.