Method and device for synchronously supplying and feeding entire rolls of sheet coil stock through transverse and longitudinal rolls

The invention relates to a method and device for synchronously supplying and feeding entire rolls of sheet coil stock through transverse and longitudinal rolls. The method for synchronously supplying and feeding entire rolls of sheet coils through the transverse and longitudinal rolls comprises the following steps: unfolding a coil stock, guiding and turning over a sheet material strip, and enabling the transverse and the longitudinal rolls of the sheet material strip to feed synchronously; the device for synchronously supplying and feeding entire rolls of the sheet coil stock through the transverse and longitudinal rolls comprises an uncoiler, the coil stock unfolding direction of the uncoiler is matched with the feeding end of a lower material supporting frame, the upper part of the discharging end of the lower material supporting frame is perpendicular to the lower material supporting frame and is correspondingly provided with the feeding end of an upper material supporting frame, an upper material supporting transverse feed motion system is arranged at the material discharging end of the upper material supporting frame, a front feeding device is arranged at the feeding end of the lower material supporting frame, a rear feeding device is arranged at the discharging end of the upper material supporting frame, and the front feeding device and the rear feeding device are synchronous. The problems of proximity switch damage and rub cut part scrapping caused due to that a material supplying device gives relatively slow responds to signals of a proximity switch or material supplying errors of the material supplying device are relatively great, and the proximity switch is in touch with unfolded material rolls, can be solved.