Roving Machine Process , Types and Used for



The main function of the roving machine is to draw and twist the fiber strips into roving to meet the requirements of the spinning frame processing.

What is roving used for?

The mature strips made by drawing frame are relatively heavy and must be drawn 50 times to 400 times to reach the required fineness of yarn.At present the spinning frame does not have such a large drawing capacity. In the 1950s, it was tried to spin the cooked strips directly without roving process by using a large draft spinning frame.Due to excessive draft, the short length of yarn will deteriorate. At the same time, feeding the spinning frame directly in strip form will encounter difficulties in many aspects and is not economical.
Therefore, in the traditional spinning process, in order to ensure the quality of yarn, a roving process is set between the jointing and the fine yarn to share part of the draft.However, new spinning technologies, such as rotary spinning, jet spinning, friction spinning and dust cage spinning, have eliminated the roving process. However, it is still necessary to keep the roving process in the spinning of most yarn counts, especially those with fine count and high quality requirements. The tasks of roving process are:
1. Draw, lengthen and thin the ripe strips of the drawing frame and spin into roving yarn to adapt to the drawing capacity of the spinning frame.
2. The roving yarn is twist properly to make it have a certain strength. It can be wound into a certain shape, which is convenient for storage and handling, and suitable for unwinding feeding on the spinning frame to prevent accidental drafting.
3. After drawing and twisting of roving frame, it can further improve the separation, straightening and cleanliness of fibers, facilitate the drawing of spinning frame, and improve the quality of yarn.

What are the different types of roving?

Roving frame according to the twisting mechanism is divided into wing roving frame and twisting roving frame. Spun roving frame produces spun roving by continuously applying twist to the yarn strip by rotating the spun wing. The spinning roving machine relies on a pair of rolling sheets to clamp and twist the yarn strips, forming false twisting alternating between positive and negative twisting on the yarn strips to produce no twisting roving yarn. Ingot roving frame and twisting roving frame can be divided into first, second and single roving frame. Various roving frames have different feeding forms, roving rolls and machine number of ingot, but the machine structure and function are roughly the same.

DW7030H Lab Roving Frame

DW7030H is a model independently developed by Fanyuan. It is used to spin cotton sliver to be roving through drafting and flyer spinning. It’s the ideal system for teaching, researching, etc.

  • Delta brand PLC, drive and servo motor;
  • PLC+Touch screen control, easy to learn and operate;
  • Use touch screen as man-machine interface, input technical parameters and show machine running state by touch screen;
  • Use Z twist turning;
  • Rotation speed of spindle accurate to ±1%;
  • Aluminum profile body frame with four casters, free to move;
  • Modular independent drive for drafting, spindle blade and flyer;
  • Ball line guide rail pair design, low friction resistance and low power consumption, ensuring the reliability of supporting plate when moving up and down;
  • Multi-functional design, easy to clean, set and maintain.
Location: 3F4C+5R 中国甘肃省天水市秦安县王铺乡

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