Automatic sheet feeding device having flipping mechanism

An automatic sheet feeding device used for a sheet, comprising:

• a sheet outputting tray;
• a sheet feeding tray;
• a sheet outputting channel, disposed corresponding to the sheet outputting tray;
• a flipping mechanism, arranged between the sheet outputting channel and the sheet outputting tray;
• a sheet delivery area, disposed between the sheet feeding tray and the sheet outputting tray, the sheet delivery area comprising a scanning module and a first feeding mechanism, the first feeding mechanism comprising a flipping channel and a delivery channel, the flipping channel disposed between the sheet feeding tray and the scanning module, the delivery channel passing through the scanning module and disposed corresponding to the flipping mechanism, and one end of the delivery channel communicating with the flipping channel and another end of the delivery channel communicating with the sheet outputting channel;
• and
• a switching guide mechanism, arranged between the sheet outputting channel and the flipping mechanism, and configured to guide the sheet to be conveyed to the sheet outputting tray from the sheet outputting channel or conveyed to the sheet outputting tray from the flipping mechanism;
• wherein the sheet outputting tray comprises a first side and a second side opposite to each other, the sheet outputting channel is disposed adjacent to the first side of the sheet outputting tray and configured to convey the sheet along a direction from the first side toward the second side, the flipping mechanism comprises a sheet conveying portion disposed adjacent to the second side of the sheet outputting tray and configured to convey the sheet along a direction from the second side toward the first side;
• wherein the sheet delivery area further comprises a second feeding mechanism, the second feeding mechanism comprises a reversing component disposed corresponding to the delivery channel and a retrieving channel communicating with the flipping channel and the delivery channel, the reversing component comprises a reversing roller located on the delivery channel.