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Rotor형 Open-end 정방에서 Separator의 회전이 실의 균제도에 미치는 영향
이재곤 한국섬유공학회 1973 한국섬유공학회지 Vol.10 No.4
The applicability of the open-end spinning system for wool is investigated by the rotor type open-end spinning system having a revolving separator which is a different one from the existing device. The effects of the revolution of the separator on the fiber configuration in the fleece accumulating on the collecting surface of the rotor, the yarn evenness and the fiber configuration in the yarn were studied experimentally. The ratio of the r.p.m. of the separator to that of the rotor influences upon the yarn evenness. Most of the yarn are bent or irregularly curved and about 10% of fibers in the yarn have a normal helical form. The experimental results are discussed assuming that the rotor and the revolving separator are vertical coaxial cylinders and the annular air flow between them are tangential laminar flow of an incompressible fluid.
이재곤,유운영 한국섬유공학회 1975 한국섬유공학회지 Vol.12 No.1
Theoretical analysis of the fibre motion in the draft zone has been carried out and the basic equation expressing the number of fibres over the cross section in the draft zone has been derived under the assumption that the sliver is a continuous medium. The denisty function of speed change fibres included in the average velocity term has been assumed in four kinds, i. e. uniform, triangle, cosine and normal. The theoretical values of the number of fibres over the cross section were compared with the experimental. The following conclusions were obtained: 1. The theoretical equation had good approximation to the experiment. 2. The fibre number distribution over the cross section the draft zone was not affected by the types of four density functions of speed change fibres.
이재곤,강태진 한국섬유공학회 1989 한국섬유공학회지 Vol.26 No.5
A relatively simple module for the electromagnetic activation of selector needles(hooks and levers for controlling jack levers of Dobby) was developed to replace the punched card input of a standard Dobby. A detailed description of the hardware and programming procedure is given to demonstrate the versatility of the system. It was found that the system can effectively control the Dobby motion by the signals from weave pattern designing system.