Automatic feeding device of gantry laser cutting machine

The utility model relates to an automatic feeding device, in particular to an automatic feeding device of a gantry laser cutting machine. The automatic feeding device comprises a machine frame, a material placing platform, a material suction device and an exchange work platform. The machine frame is provided with a guide rail which enables the material suction device to move in a reciprocating mode between the exchange work platform and the material placing platform. The material suction device is provided with a suction disc capable of sucking materials, the material placing platform is provided with a plate separator which separates bond materials, and the plate separator separates a plurality of blocks of the materials and ensures that only one block of the materials is sucked by the suction disc, so that the blocks of the materials can be placed on the material placing platform, and work efficiency is improved. The material suction device is transported to the exchange work platform through the guide rail, automated feeding replaces manual feeding, so that occupational injuries caused by sharp materials or maloperation of the laser cutting machine can be avoided, and production efficiency is improved. Due to the characteristics and the advantages of the automatic feeding device, the automatic feeding device can be applied to products like laser cutting machines.