Bar wire straightening machine and bar wire straightening method

摘要

A straightening machine for a bar and wire that easily improves the straightness of the bar and wire, and a straightening machine that performs straightening by passing a metal bar and wire between a plurality of rolls, wherein the straightening machines are adjacent to each other. Including two or more units, at least one set of a unit group having an angle of ± 15 ° in a direction in which the two or more units correct the rod and wire is provided, and the unit includes two or more fixed rolls. A fixed roll disposed on one side of the running rod and a fixed roll for the rod and the fixed roll and the movable roll are provided with one less movable roll than the fixed roll. With the movable rolls disposed on the opposite side, the rolls are arranged in a staggered manner so as to sandwich the traveling rod or wire rod, and it is possible to set the pushing amount of the movable roll on the most entrance side and the movable roll on the most exit side of the unit. Can, A straightening machine for a rod or wire, wherein the pushing amounts of adjacent units satisfy a predetermined relationship.