Change gear in order to ensure that the roving roving production quality, to be based on model features and the variety of roving machine spinning process design, content design are the main draw ratio, twisting and winding density coefficient. According to the process design of various parameters need adjustment, roving machine with a drawing, twisting, winding, lifting, shaping and changing gear and other lifting decreasing, so that all parameters have a certain adjustment range. Production of the twentieth century, a lot of roving machine models, but each change gear transmission system configuration is basically the same, so the process calculation method is also similar. On the intelligent roving machine, just drawing changing gear, and other process parameters can be set directly input through the touch screen. Change gear roving machine are: (1) twist twist gear gear can change the roving twist, so-called twist teeth. Changing twist that changes the spindle and the front roller speed ratio, when the spindle speed constant, with the twist of the front roller speed decreases, a change that is to change the output twist roving machine. Roving machine and the machine's transmission and transmission Page 2 of 9 (2) draft gear draft gear can change the total draw ratio roving machine and spun roving quantitative, so called the severity of teeth. Divided into the main draw drawing gear teeth and tooth back draft for changing the draft ratio of each drawing area. (3) lifting gear lifting gear for adjusting the degree of density roving bobbins axially aligned, change the lifting gear teeth, which changes the lift LONG lifting speed and roving distance of turn. (4) is wound is disposed between the gear transmission mechanism and the lifting gear, a differential means for adjusting the winding speed of the empty bobbin starts. Generally do not make adjustments, but the change fiber varieties (or bobbin diameter, roving quantitative change is large), square adjustment. Lilium on with a continuously variable transmission and a molding apparatus roving machine, comes with molded gear and lift decreasing gears. Forming gear located on Teppo belt molding device to drive the route, Teppo belt for adjusting the distance every move that decided the bobbin winding speed and lift speed drill LONG reduce the number; lifting gear from the molding decreasing ratchet drive, which determines the size of each lift LONG lifting stroke that determine the taper angle formed at both ends of the roving, it is also known angle teeth. 

keywords: Roving machine, gear, TRW textile machinery, textile machinery Used equipment,