Dust removal device of printing equipment

The utility model belongs to the field of printing equipment, and particularly relates to a dust removal device of printing equipment, which comprises a printing machine table, grooves are arranged on the inner wall of the printing machine table, the grooves are symmetrically distributed, positioning columns are fixedly connected inside the grooves, the outer ends of the positioning columns are sleeved with positioning sleeves, and the positioning sleeves are fixedly connected with the inner wall of the printing machine table. The positioning columns are symmetrically distributed on the left side and the right side of the positioning sleeve, the outer end of the positioning sleeve is in threaded connection with a fixing bolt, and the fixing bolt is in threaded connection with the positioning columns; through the structural design of a lead screw, a sliding block and dust removal cloth, a hand wheel is rotated to drive the lead screw to rotate, and then the sliding block, a positioning column, a positioning sl