The construction of this machine is the form of three roller symmetry, The top roller, in the centre symmetry position over the two botton roller, does vertical motion up and down through screw, nut and worm transmission.

• 本机结构型式为三辊对称式，上辊在两下辊中央对称位置做垂直升降运动，通过液压缸内的液压油作用于活塞而获得，为液压传动；两下辊做垂直运动，通过减速机的输出齿轮与下辊齿齿合，为卷板机提供扭矩。