Plating line automatic feeding and discharging device

The invention relates to the technical field of feeding and discharging devices, in particular to a plating line automatic feeding and discharging device. The device comprises a hanging tool frame, a first guide rail set, a second guide rail set and a third guide rail set, wherein the hanging tool frame is a cuboid frame composed of eight horizontal rods and four vertical rods, supporting pipes which are equal in height and are horizontally arranged are connected to the four vertical rods of the hanging tool frame respectively, and the supporting pipes extend in the direction away from the hanging tool frame; the first guide rail set comprises two first guide rails which are equal in height and are arranged in parallel; the second guide rail set comprises two second guide rails which are equal in height and are arranged parallel to the first guide rails, the second guide rails are higher than the first guide rails, and the distance between the two second guide rails is equal to the distance between the two fi