Seven-layer composite device for corrugated boards

The utility model discloses a corrugated board seven-layer compounding device which comprises a base, square columns and a pedestal, the square columns are installed at the two ends of the top of the base through bolts, electric hydraulic cylinders are installed at the tops of the square columns through installation bases, sliding grooves are formed in the inner sides of the square columns, a movable cross beam is arranged between the sliding grooves, and the movable cross beam is connected with the pedestal through bolts. An upper pressing plate is mounted at the bottom of the movable cross beam through bolts, a pedestal is arranged at the top of the base and located between the square columns, a first vertical plate is welded to one end of each square column, a control box is mounted at the top of each first vertical plate through a screw, and an electric power storage box is mounted in each control box through a screw; and a timer is mounted at the top of the upper pressing plate through a screw. The novel