Machining assembly line and method for non-standard metal plates

The invention discloses machining assembly line and method for a non-standard metal plate. The machining assembly line comprises a rack, a conveying device, a first roller press, a first movable backer, a second roller press and a second movable backer, wherein the first roller press is used for carrying out rolling forming on one of two side edges, parallel to the conveying direction, of a raw material; the first movable backer is used for pushing the raw material to the first roller press; the second roller press is used for rolling and forming the other side of the raw material; and the second movable backer is used for pushing the raw material to the second roller press. The machining assembly line for the non-standard metal plates is a production line suitable for machining non-standard and non-uniform-size rectangular decorative wall materials; and according to the assembly line, the machining efficiency is improved, the labor intensity is reduced, the forming machining precision is guaranteed, the erro