Cutting apparatus having adjustable direction

A cutting machine comprising:

• a cutting frame;
• a cutting shaft disposed in front of the cutting frame and a cutting blade fitted on the cutting shaft assuming that a direction in which the cutting machine is advanced is a forward direction and a direction opposite thereto is a rearward direction;
• a middle frame configured to support the cutting frame, the middle frame located under the cutting frame;
• an upper adjustment plate fixed to the rear of the cutting frame
• a lower adjustment plate fixed to the rear of the middle frame;
• a first fixing fastening portion inserted and fixed on a left side surface of the lower adjustment plate and a second fixing fastening portion inserted and fixed on a right side surface of the lower adjustment plate;
• and
• a center fastening portion inserted and fixed in the upper adjustment plate and the lower adjustment plate,
• a first direction adjustment fastening portion connected to a left side of a rear of the upper adjustment plate and a second direction adjustment fastening portion connected to a right side of the rear of the upper adjustment plate;
• wherein a front end of the middle frame is located lower than a rear end of the middle frame, whereby the middle frame is inclined at a first predetermined angle,
• wherein the first fixing fastening portion is inserted into a first insertion hole located at the left side surface of the upper adjustment plate and the second fixing fastening portion is inserted into a second insertion hole located at the right side surface of the upper adjustment plate
• wherein the first insertion hole is constituted by a first space extending in a longitudinal direction by a predetermined length so that the first insertion hole of the upper adjustment plate moves forwards and rearwards around the first fixing fastening portion to control a direction of the upper adjustment plate,
• wherein the second insertion hole is constituted by a second space extending in the longitudinal direction by the predetermined length so that the second insertion hole of the upper adjustment plate move forwards and rearwards around the second fixing fastening portion to control a direction of the upper adjustment plate,
• wherein while the first and second fixing fastening portions are fixed, the lower adjustment plate is fixed, but the upper adjustment plate can be moved along the first insertion hole about the first fixing fastening portion in forward and rearward directions,
• wherein the first direction adjustment fastening portion comprises a first adjustment screw and a first adjustment bar, and the second direction adjustment fastening portion comprises a second adjustment screw and a second adjustment bar,
• wherein the first adjustment screw is fitted on the first adjustment bar and an end of the first adjustment screw is configured to contact the upper adjustment plate, the second adjustment screw is fitted on the second adjustment bar and an end of the second adjustment screw is configured to contact the upper adjustment plate,
• wherein, for direction adjustment, the second adjustment screw is adjustable so that the right side of the upper adjustment plate cannot move rearward, while the first adjustment screw is adjustable to a loosened state so that the upper adjustment plate and the cutting shaft can rotate left, and
• wherein the cutting blade is configured to cut a cutting line according to the rotation of the cutting shaft.