Die cutting machine for producing packaging boxes

The utility model discloses a die cutting machine for producing packing boxes, which comprises a workbench, a cutting device is fixedly mounted in the middle of the upper end of the workbench, and fastening devices are symmetrically arranged on the workbench front and back; the fastening device comprises threaded grooves, threaded bolts, limiting springs and fastening bases, the fastening bases are arranged at the front end and the rear end of the cutting device in a bilateral symmetry mode, the threaded bolts are arranged on the fastening bases in a front-back symmetry mode, the lower portions of the annular sides of the threaded bolts are sleeved with the limiting springs, and the upper ends of the limiting springs are fixedly connected with the fastening bases; and the threaded groove corresponds to the threaded bolt. When the cutting device is used, a to-be-cut piece is placed between the workbench and the cutting mechanism, the threaded bolt is rotated, the threaded bolt is matched with the threaded groo