Simple vertical pressure cutting machine

The invention discloses a simple vertical pressure cutting machine. A regular vertical pressure cutting machine is large in size and not flexible enough, great manpower is needed for pressing in the cutting process, and particularly, cutting for rigid plastic tubes consumes great effort and causes a user to exert force quite inconveniently; and the whole machine is heavy, and quite inconvenient to use. The simple vertical pressure cutting machine comprises a base, and is characterized in that a fixing rack is arranged on the base; a crank is installed on the left side of the fixing rack; rod pieces connected with the crank form an eccentric device; and a cutting tool is fixed to the portion which is located on the right side of the fixing rack and at the tail end of the eccentric device. According to the simple vertical pressure cutting machine, characteristics of the four-rod mechanism are utilized, the lengths of the rod pieces are ingeniously changed, the eccentric function is achieved, and the machine can