Blackboard rocking machine

The utility model discloses a blackboard rocking machine which comprises a fixed base and a motor fixedly arranged in the fixed base, wherein the motor is connected with a blackboard, the other end of the blackboard is connected with a connecting shaft in a support arm rotating groove, and the fixed base is provided with a sliding rail and a sliding yarn guide ring matched with the sliding rail. The blackboard rocking machine is characterized in that two ends of the blackboard are provided with a first fixed shaft and a second fixed shaft, the first fixed shaft is hinged with the connecting shaft by virtue of a hinge shaft, and the second fixed shaft is provided with a boss; the motor is provided with a groove corresponding to the boss, the hinge shaft is parallel to the boss, and the support arm is provided with a locking component used for locking the connecting shaft. The utility model aims at providing the blackboard rocking machine which is capable of facilitating installation and detachment of the blackboard.