Question

As the material passes, which type of action the mono cylinder has?

• A. Beat out
• B. Aero Dynamic
• C. Combing
• D. Picking part

Hint:

• Mono-cylinder openers/cleaners use a single high-speed clothed cylinder.
• Action is a mix of mechanical (picking, beating) and aerodynamic effects.
• Aerodynamic forces are vital for fiber transport, trash separation (using air currents and centrifugal forces), and aiding tuft opening.
• "Aero Dynamic" best captures the sophisticated use of air in modern mono-cylinder designs.

Answer 1

The Correct Option is B

A "mono cylinder" in blowroom or carding preparation (e.g., a mono-cylinder cleaner like Rieter UNIclean or Trützschler Cleanomat series) uses a single large, high-speed rotating cylinder clothed with spikes or saw-tooth wire. The action of this cylinder on the fiber tufts is a combination of mechanical and aerodynamic effects:

• Mechanical action: The teeth "pick" the fibers and "beat" them against grid bars or mote knives to dislodge impurities and open tufts.
• Aerodynamic action: The high-speed rotation of the large cylinder creates significant air currents. These air currents are crucial for:
  • Transporting fibers through the machine.
  • Separating lighter fibers from heavier trash particles via centrifugal force and guided airflows.
  • Assisting in the opening of tufts as they are carried by the air and interact with machine elements.

Modern mono-cylinder machines are designed with sophisticated aerodynamic principles to enhance cleaning efficiency and gentle fiber treatment. While "beat out" and "picking" are components of the mechanical action, "Aero Dynamic" best describes the overarching principle that integrates air flow for transport, separation, and opening. "Combing" is a much finer action not characteristic of these machines. \[ \boxed{\text{Aero Dynamic}} \]