Built-in shutter slat lifting device

The utility model discloses a built-in shutter slat lifting device in the technical field of shutters, which comprises a window frame, a servo motor is arranged on the right side, close to the bottom, of the window frame, the output end of the servo motor is connected with a rotating shaft through a speed reducer, a conveying chain is arranged on the outer wall of the rotating shaft, and cavities are arranged on the left side and the right side of the top of an inner cavity of the window frame. A movable shaft rod is arranged on the inner wall of the cavity, a roller shutter is arranged on the outer wall of the movable shaft rod, a limiting frame is arranged on the outer wall of the roller shutter, a shutter is movably arranged in an inner cavity of the limiting frame, two sets of limiting rod frames are arranged on the inner wall of the window frame, and buffer springs are arranged on the opposite end faces of the two sets of limiting rod frames. The adjusting block is movably arranged on the inner wall of t