Abstract: A roll straightener which is capable of being switched between a zigzag type and an opposed type is disclosed. The roll straightener has an odd-number of pairs of upper and lower rolls. A group of the lower rolls including the second lower roll from an insertion side of the straightener up to a lower roll located at a middle position are movable in vertical and transverse directions of the rolls, while the remaining upper rolls and lower rolls are movable in only the vertical direction.

Abstract: A roll straightener serving as both zigzag type and opposed type and capable of being easily switched from one to the other between the zigzag type and the opposed type and being manufactured at low cost is disclosed. The roll straightener has odd-numbered pairs of upper and lower rolls. Plural lower rolls (22, 23, 24) from a second lower roll (22) counted from an insertion side of a work (10) up to a lower roll (24) located at a middle position are made movable in both vertical and transverse directions of the rolls, while the other upper rolls (11, 12, 13, 14, 15, 16, 17) and lower rolls (21, 25, 26, 27) are made movable in only the vertical direction. As a result, a change can be made easily from one to the other between a zigzag type roll straightener and an opposed type roll straightener and the manufacturing cost is so much reduced.

Abstract: A method and apparatus for continuously drawing an elongated stock permit plural types of drawings within a narrower area, by a series of automated steps and permit easy adjustment of the distance between a front end position of a plug and an outlet position of a die. A holding member with plural types of dies is mounted at a central position relative to reciprocation of an elongated stock. When the elongated stock is to be moved from one side to the opposite side of the die holding member, it is passed through an elongated stock passage, not through the dies, while when the elongated stock is to be moved from the opposite side to the one side of the die holding member, it is passed through one of the plural dies. The elongated stock is reciprocated plural times between the one side and the opposite side of the die holding member and the die holding member is moved at each passage of the elongated stock through a die to change the type of die.

Abstract: A method and apparatus for drawing an elongated stock continuously are disclosed which permit plural types of drawings to be done at a narrower area than in the prior art by a series of automated works and which permits easy adjustment of the distance between a front end position of a plug and an outlet position of a die. A holding member with plural types of dies 18a and 18b mounted at a central position for reciprocation of an elongated stock is held movably. When the elongated stock is to be moved from one side to the opposite side with the dies holding member as the center, it is passed through an elongated stock passing space, not through the dies, while when the elongated stock is to be moved from the opposite side to the one side with the dies holding member as the center, it is passed through one of the plural dies.