A feeding system of a gantry blanking machine comprises a feeding platform (2) and a discharging platform (3), wherein the center of the feeding platform (2) is provided with two position adjusting disks (4) of which the bottom is connected with a servomotor (15) by means of a rotating shaft, and a roller conveying groove (5) is arranged below the feeding platform (2) on both sides of the position adjusting disc (4); a plurality of strip-shaped roller contact empty slots (6) are uniformly arranged on the feeding platform (2) above the roller conveying (5), a transmission roller table (7) is movably installed in the roller conveying groove (5), the transmission roller table (7) is provided with a plurality of raised circular rolling transmission blocks (8) which are movably installed in the roller contact empty slots (6), and the transmission roller table (7) is connected with a position adjusting motor (16) via a transmission belt. With the feeding system of gantry blanking machine, a material feeding angle can be detected by a device without any extra manual operation, and then can be automatically adjusted into an optimal feeding angle. The system is precise in control and regulation, and saves time and labor, thereby meeting requirements of flow line production of the gantry blanking machine.
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