한국섬유공학회지 (Textile Science and Engineering)

  • 제48권4호
  • /
  • Pages.203-213
  • /
  • 2011
  • /
  • 1225-1089(pISSN)
  • /
  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

롤러 드래프트의 조작 설정과 슬라이버 굵기의 변동 특성

Operation Adjustment and Sliver Thickness Variation in Roller Drafting

  • 김종성 (경희대학교 지능공정 및 제어 실험실) ;
  • 허유 (경희대학교 공과대학 기계공학과)
  • Kim, Jong-S. (Laboratory for Intelligent Process and Control, Kyung Hee University) ;
  • Huh, You (Department of Mechanical Engineering, College of Engineering, Kyung Hee University)
  • 투고 : 2011.01.31
  • 심사 : 2011.03.02
  • 발행 : 2011.08.28
⟨ 이전 논문 다음 논문 ⟩

초록

Fibers' length distributions were shown to affect their linear density. They depended on processing conditions such as draft roller adjustment and draft ratio. Random variational signals were applied as input bundles and output linear densities were simulated at various draft roller adjustments and draft ratios using the dynamic model equipped with various velocity variance models for fiber length distribution. Draft roller adjustment and draft ratio led to process resonance and increased irregularity in the output linear density. Increasing draft roller adjustment reduced linear density in CV%, while process resonance occurred at draft roller adjustments of 1.1-1.25 times of the maximal fiber length. Length distributed bundles had lower fundamental frequencies (longer fundamental wavelengths) than uniform fibers. High draft ratios induced greater irregularities in the output bundles, with process resonance occurring at draft ratios of 20-30. Draft ratios above 30 led to output linear density including wide ranging regularly oscillatory components of irregularity that corresponded to integer multiples of the fundamental frequency.

키워드

과제정보

연구 과제 주관 기관 : 한국과학재단

참고문헌

  1. H. Balasubramanian, P. Grosberg, and Y. Turkes, "Studies in Modern Yarn Production", Textile Institute, Manchester, 1968, pp.169-180.
  2. B. Dutta and P. Grosberg, "The Dynamic Response of Drafting Tension to Sinusoidal Variations in Draft Ratio under Conditions of Sliver Elasticity in Short-staple Drafting", J Text Inst, 1973, 64, 534-542. https://doi.org/10.1080/00405007308630289
  3. G. Mandl and H. Noebauer, "The Influence of Cotton- Spinning Machinery on the Random Irregularity of Sliver and Yarns - Part I, II, III", J Text Inst, 1977, 68, 387-393, 394-399, 400-406. https://doi.org/10.1080/00405007708631419
  4. Y. Huh and J. S. Kim, "Modeling the Dynamic Behavior of the Fiber Bundle in a Roll-Drafting Process", Text Res J, 2004, 74(10), 872-878. https://doi.org/10.1177/004051750407401006
  5. Y. Huh and J. S. Kim, "Steady-Flow Characteristics of Bundle Fluid in Drawing", Transaction of the KSME B, 2006, 30(7), 612-621.
  6. G. Grover and P. R. Lord, "The Measurement of Sliver Properties on the Drawframe", J Text Inst, 1992, 83(4), 560- 572. https://doi.org/10.1080/00405009208631231
  7. Y. Huh and J. S. Kim, "Effect of Material Parameters and Process Conditions on the Roll-Drafting Dynamics", Fiber Polym, 2006, 7(4), 424-431. https://doi.org/10.1007/BF02875776
  8. J. S. Kim and Y. Huh, "Stability of Bundle Flow Dynamics", Text Sci Eng, 2008, 45(2), 89-96.
  9. J. S. Kim and Y. Huh, "Simulating the Bundle Thickness Output from Fiber Length Distributed Bundle Drawing Process", Text Sci Eng, 2008, 45(6), 382-394.
  10. J. S. Kim and Y. Huh, "Experimental Verification of the Fiber Bundle Drawing Dynamics", Text Sci Eng, 2010, 47(5), 314-321.