Cutter structure capable of preventing longitudinal cutting corrugation deformation

The cutter structure comprises a top block and a bottom block which are correspondingly arranged up and down, the upper portion of the bottom block is provided with a plurality of longitudinal cuttinglower cutter fixing blocks at intervals, and the front end face of each longitudinal cutting lower cutter fixing block is provided with a longitudinal cutting corrugated lower cutter through a locking piece. A plurality of longitudinally-cutting upper cutter fixing blocks are installed on the lower portion of the top block at intervals, a longitudinally-cutting corrugated discharging block is installed on the rear end face of each longitudinally-cutting upper cutter fixing block through a discharging spring and a locking piece, and a longitudinally-cutting corrugated upper cutter is installedon the rear end face of each longitudinally-cutting corrugated discharging block through a fastener. The cutting edge of the longitudinally-cutting corrugated upper cutter corresponds to the cuttingedge of the longitudinally-