Multi-bag synchronous bag supply machine with upper bag storage bin

The utility model relates to a multi-bag synchronous supply machine with an upper bag storage bin, which comprises a rack, the rack is provided with at least two synchronous bag feeding stations, and each station is provided with a bag storage bin, a bag clamping and conveying mechanism and a bag opening lifting mechanism; a self-adaptive lifting pressing mechanism is arranged beside the bag storage bin, a bag outlet is formed in one end of the bottom face of the bag storage bin, a bag suction mechanism and a bag blocking mechanism are arranged below the bag outlet, and the bag suction mechanism is used for sucking the bottommost empty bag in the bag storage bin and rotating the empty bag downwards by a certain angle from the bag outlet. The bag blocking mechanism is used for blocking the bag outlet; the bag clamping and conveying mechanism is used for transferring the empty bags sucked by the bag sucking mechanism to the bag opening and lifting mechanism; the bag opening lifting mechanism is used for opening