Motor-type automatic blade lock

The invention discloses a motor-type automatic blade lock. The motor-type automatic blade lock includes a lock core and a motor. The lock core is installed on the motor and includes a lock core body,a first lock core sleeve and a second lock core sleeve, the lock core body penetrates through the first lock core sleeve and the second lock core sleeve and is in locked connection with the first lockcore sleeve through blades, and the first lock core sleeve is connected with the motor. Through arrangement of the second lock core sleeve, the coaxiality between the motor and the second lock core sleeve is guaranteed, and the coaxiality between the first lock core sleeve and the second lock core sleeve is guaranteed by the lock core body penetrating through the first lock core sleeve and the second lock core sleeve. The coaxiality between a blade lock body and the motor is thus ensured, so that the situation that the coaxility is broken by the relative displacement between the motor and theblade lock body is avoided