The utility model relates to a power supply disk, including base, two supports, rolling bearing and winding components, two supports relatively set up in the base, rolling bearing installs respectively in two the support, winding components is used for receiving and releasing the cable, winding components has the axis of rotation, rolling bearing with the support reaches the axis of rotation cooperates respectively. Above -mentioned power supply disk, the rolling bearing on locating the support is connected through the axis of rotation with rotating to the bobbin winder base, makes the staff hard little at the wire winding in -process, can realize quick unwrapping wire and receive the line, has saved the time of accomodating, has improved work efficiency.