Cutter assembly, paper cutting device and paper cutter

A paper cutter, comprising:

• a paper cutter housing which comprises an accommodating space for axially accommodating a roll of paper to be cut, wherein a side wall of the paper cutter housing further comprises two parallel guide rails arranged in an axial direction thereof, and the parallel guide rails can serve as contact planes for the paper cutter and a paper cutter placement surface and are applied to positioning, force bearing and supporting during paper cutting and configured to assist the paper cutter in linearly sliding;
• and
• a paper cutting device which is connected to the side wall of the paper cutter housing and comprises a paper cutting device housing and a cutter assembly which is connected to the paper cutting device housing, wherein the cutter assembly comprises an object picking member and a cutter, one end of the object picking member is provided with an object picking end, another end of the object picking member is connected to a cutter bearing member, the cutter is mounted in the cutter bearing member;
• the object picking member picks the paper to be cut away from a placement surface for the paper to be cut and feeds the paper towards a cutting edge of the cutter, and a direction corresponding to the cutting edge of the cutter is opposite to a paper feeding direction of the paper to be cut;
• and
• wherein the paper cutting device further comprises a paper guide member, the paper guide member is arranged close to a paper discharging end of the paper cutting device housing and is arranged above a paper bottom layer contact surface, and the paper guide member is connected to the paper cutting device housing by means of a paper guide mounting member.