Paper bag creasing device convenient to adjust

The utility model discloses a paper bag creasing device convenient to adjust. The marking press comprises a marking press body and an adjusting bolt. Two sleeves are arranged on the transverse plate;an adjusting bolt is fixed between the two sleeves on the transverse plate; the adjusting bolt penetrates through the middle part of the connecting plate; an upper adjusting nut and a lower adjustingnut are respectively screwed on the adjusting bolt and above and below the connecting plate; a fixing column penetrating through the sleeve is fixed to the lower end face of the connecting plate. A rotating bracket is fixed at the bottom end of the fixed column; an upper creasing roller is installed on the rotating support, a lower rolling shaft is installed at the position, under the upper creasing roller, between the supporting bases, two lower limiting wheels are fixed to the lower rolling shaft, a lower creasing wheel is fixed to the position, between the two lower limiting wheels, of therolling shaft, and an upper