Adjustable specification folding machine

The utility model discloses an adjustable specification folding machine which structurally comprises an outer machine, a switch, a paper feeding mechanism, a fence plate and a paper outlet conveying belt, the switch is arranged at the upper end of the outer machine and electrically connected with the paper feeding mechanism, and the paper feeding mechanism is installed on the inner side of the upper end of the outer machine and located at the upper end of the fence plate. During folding, a single instruction book enters the supporting plate, an air cylinder is started, and the two sides of a downward-pressing connecting plate are stably and elastically supported through spring rods on the two sides in the downward-moving process of the downward-pressing connecting plate, so that a buffering effect is achieved when a plate body conducts creasing on the instruction book, and the condition that the plate body crushes the instruction book to be broken is avoided; the plate body extrudes an instruction book downwa