The disclosed subject matter provides a mandrel feeding device and a battery winder. The mandrel feeding device has a dispensing station, an adjusting station, an adhesive application station, a transferring unit, a dispensing unit, a feeding unit configured for gripping a mandrel on the transferring unit and transferring gripped mandrel to a winding mechanism.

The line for producing tubes made of web-like material, includes a core winder, an unwinder including a rotary device on which there are arranged a first spindle and a second spindle; and a robot adapted to load reels of web-like material onto the unwinder and remove exhausted reels from the unwinder.