FA478 Four-axis Linkage Cotton Roving is a new generation of high-end computer intelligent cotton spinning roving equipment independently developed by our company on the basis of research and research on roving frame technology at home and abroad,using high and new technologies such as microcomputer control.The length of fiber suitable for spinning is22-76mm.Four servo motors are used to directly drive the four systems of spindle wing,draft,barrel and rib lifting independently The main drive system of the machine is driven by arc-shaped synchronous belt,The synchronous operation of four motors is realized under the control and coordination of the main controller.