在普通筒式绷缝机的基础上增加独立驱动式上输送机构，提高效率。因为上输送，下输送的驱动各自独立，所以能保持较大的差动比，使输送效率进一步提高，因此可以解决在重逢段部的缝堵和跳线，也能实现美观的下摆折缝工序。

On the basis of the ordinary Cylinder interlock sewing machine, an independent drive type upperconveying mechanism is added to improve efficiency. Because the upper and lower conveyors aredriven independently, a larger differential ratio can be maintained, and the conveying efficiencycan be further improved. Therefore, it can solve the seam blockage and jumper in the reunionsection,and can also realize the beautiful hem creasing process. .