Cotton spreading device

The utility model relates to a cotton spreading device which comprises a rack, a supporting frame is arranged in the middle of the rack, a rotating motor is fixed to the supporting frame and fixedly connected with a rotating disc, a cotton grabbing device is arranged on the outer side of the rotating disc and comprises a lifting air cylinder fixed to the rotating disc, and the lower end of the lifting air cylinder is fixedly connected with a mounting frame. A rotary shaft is rotatably mounted on the mounting frame and connected with a rotary driving mechanism, a support is fixed to the bottom of the rotary shaft and provided with at least one pair of grabbers, and a feeding disc is arranged below one cotton grabbing device and connected with a jacking feeding device. The feeding disc and the jacking feeding device are used for feeding materials to the cotton grabbing device, after the rock wool is grabbed by the cotton grabbing device, the rotating motor is started, the cotton grabbing device grabbing the roc