Sectional material cutting device for building

The utility model provides a sectional material cutting device for building. The sectional material cutting device comprises a cutting table, wherein a support frame is arranged on the cutting table, a cantilever beam is arranged on the support frame, a chute is formed in the lower surface of the cantilever beam, a slide block is embedded in the chute, the bottom end of the slide block is provided with a hanging arm, a push rod is arranged on the hanging arm, the lower end of the hanging arm is provided with a motor, a grinding wheel sheet is arranged on a motor shaft of a motor, the lower surface of the cutting table is hinged to four upright posts through rotating shafts, and cavities are vertically arranged in the inner sides of the corresponding upright posts. The sectional material cutting device has the advantages that the push rod can be pushed, the slide block arranged on the hanging arm moves in the chute, meanwhile, the motor arranged at the lower end of the hanging arm drives the grinding wheel sheet to move in the wheel sheet groove, and sectional materials are cut. Through the movable arrangement of the grinding wheel sheet, various sectional materials can be cut. The structure is simple, and the sectional material cutting device is suitable for being used in various construction sites.