Self-adaptive unwinding device

The invention relates to a self-adaptive unwinding device which comprises a rack, an unwinding mechanism and a traction device, the unwinding mechanism comprises an unwinding shaft, the unwinding shaft is rotatably arranged on the rack, the traction device comprises a driving wheel and a driving motor, the driving wheel is in transmission connection with the driving motor, and the driving wheel and the driving motor are connected to a lifting plate. The driving wheel is arranged above the unwinding shaft, a guide rail is further arranged on the machine frame, and the lifting plate is arranged on the guide rail. The self-adaptive unwinding device is reasonable in structural design, the driving wheel and the driving motor of the traction device are located on the lifting plate, and the driving wheel can be tightly attached to a roll material on the unwinding shaft under the action of the gravity of the driving wheel, so that self-adaptive control over driving and tension is achieved. The device can be suitable