Spring steel heat treatment assembly line

The utility model relates to the technical field of heat treatment. The utility model discloses a spring steel heat treatment assembly line. Wherein the feeding device, the induction heater, the quenching furnace, the tempering furnace and the traction device are arranged on the rack and connected in sequence. The feeding device comprises a conveying base arranged on the rack, a first conveying wheel set distributed in the length direction of the rack and a first adjusting piece arranged between the conveying base and the first conveying wheel set. The first conveying wheel set comprises an upper conveying wheel, a lower conveying wheel located under the upper conveying wheel and a first driving motor used for driving the upper conveying wheel and/or the lower conveying wheel to rotate. Afirst conveying channel for spring steel to pass through is formed between the upper conveying wheel and the lower conveying wheel, the first adjusting piece comprises a first lead screw, two sectionsof adjusting threads oppo