The machine adopts *-roller symmetrial structure with
the upper roller moving vertically in the center between
the two lower rollers,which is achieved through the drive
of the screw,the nut,the worm and the lead screw.
the two lower rollers rotates,and provides the plate
material with torque through the engagement of the output
gear of the moderator with the geat of the lower rollers.
The disadvantage of the machine is that the ends of
the plate materials need to have the help form other
equipment for pre-bending.
