Automatic production line for heat treatment of hardware cutters

The invention relates to an automatic production line for heat treatment of hardware cutters. The production line comprises a feeding device, a high-temperature furnace, a quenching bath, a low-temperature furnace, a discharging device and a cutter placing block. A quenching device is arranged in the quenching pool and comprises a device frame capable of moving up and down and rotating, the device frame comprises a bottom plate with an oil leakage hole channel, two or more placing positions are arranged on the bottom plate in the circumferential direction at intervals, and each placing position is provided with a positioning structure matched with a tool placing block in a positioning mode. And each placing position is provided with a cutter jacking block. And in the process that the cutter placing block falls in place on the positioning structure, the cutter jacking block can jack up all the cutters on the cutter placing block by a certain displacement, so that the parts, covered by the cutter placing block,