Belt winding machine buffer device

The invention discloses a belt winding machine buffer device, and belongs to the technical field of belt winding machines. The belt winding machine buffer device comprises a cross beam, a feeding doorframe, a hinge, a door stop, a first proximity switch, a feeding guiding pulley, a discharging guiding pulley, a first fixed pulley, a second fixed pulley, a third fixed pulley, a vertical sliding rail, a sliding block, a movable pulley fixing support, a first movable pulley, a second movable pulley, a third movable pulley, a fourth movable pulley and a second proximity switch. When a cloth beltis knotted and the knotted position enters a feeding gap between the feeding door frame and the door stop, the knotted position can drive the door stop to swing inwards, thereby triggering the first proximity switch, and a signal which can hint the knotting phenomenon is sent out; and when the cloth belt is knotted and blocks the feeding gap between the feeding door frame and the door stop, and the first proximity switch c