Automatic feeding and discharging device of sheet processing equipment

An automatic feeding and discharging device of sheet processing equipment relates to automatic sheet conveying devices, can be combined with automatic sheet processing equipment, and can be used with the automatic sheet processing equipment to realize unattended operation of a whole process. The automatic feeding and discharging device comprises a frame, a Z-directional and X-directional conveying device, a lifting device, a feeding vacuum sucker device and a discharging device, wherein the frame is provided with an upper store, a lower store and a rear store, the Z-directional and X-directional conveying device is used for transferring stacked sheets from between the upper store and the lower store to a feeding preparation station, the lifting device is used for lifting and conveying the stacked sheets from the feeding preparation station in a Z-direction, the feeding vacuum sucker device is used for sucking the topmost sheets of the stacked sheets and conveying the topmost sheets to the sheet processing equipment, and the discharging device is used for taking the processed sheets on the sheet processing equipment to the rear store. The frame with the three stores respectively functions in storage, preparing for conveying and collecting. Scratches to the surfaces of the sheets are considered further, the sheets are immediately intervened by a feeding roller shaft between the topmost sheet and the secondary-top sheet after the sucker sucks the sheets so that the two sheets are separated thoroughly, and thereby injury of the sheets is avoided completely.