Edging rewinding device of fretsaw for electroplating nickel and diamond composite layer on surface of carbon steel

The invention discloses an edging and rewinding device of a fretsaw for electroplating nickel and diamond composite layers on the surface of carbon steel, which comprises a rack, an unwinding mechanism and a winding mechanism are arranged on the front side of the rack, a leading-out wheel and a leading-in wheel are respectively arranged above the unwinding mechanism and the winding mechanism, an edging mechanism is arranged on the side surface of the rack, and the edging mechanism is arranged on the side surface of the rack. A tensioning mechanism is arranged between the unwinding mechanism and the edging mechanism; the edging mechanism comprises a mounting plate, and a first multi-groove guide wheel and a second multi-groove guide wheel are rotationally arranged on the front side of the mounting plate. The resistance borne by the fretsaw with the carbon steel surface electroplated with the nickel and diamond composite layer in the edging process can be reduced, and the wire breaking phenomenon in the edging