scholarly journals A Novel Compact Spinning with Lattice Apron Achieved through Airflow Simulations

2021 ◽  
Vol 67 (4) ◽  
pp. 73-76
Author(s):  
Malik Yonis Hassan SATY ◽  
Nicholus Tayari AKANKWASA ◽  
Jun WANG
Keyword(s):  
Compact Spinning

Study of Flow Field in Compact Spinning with Pneumatic Groove

2011 ◽  
Vol 332-334 ◽  
pp. 260-263
Author(s):  
Shi Rui Liu
Keyword(s):  
Flow Field ◽  
Negative Pressure ◽  
Static Pressure ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Compact Zone ◽  
Air Flows ◽  
Compact Spinning

In the paper the structure of the compact spinning with pneumatic groove is introduced and the characteristics of three-dimensional flow field of the compact spinning with pneumatic groove are also investigated. Results from this research confirmed that In the compact zone, the air flows to the groove and enters the inner hollow of the slot-roller through the round holes, and the air on both sides of the groove condenses to the center of it and flows to the round holes; It is beneficial to compact the fiber and make the fiber slip to the bottom of the groove with shrink shape; the velocity and negative pressure are both not homogeneous, as the round holes are not continual, and the gradient of static pressure and velocity in compact zones are also perceptible.

Analysis of the appearance of two-color cotton yarn by the double-channel spinning system

2018 ◽  
Vol 89 (9) ◽  
pp. 1712-1724 ◽  
Author(s):  
Mingrui Guo ◽  
Fengxin Sun ◽  
Lei Wang ◽  
Yuan Xue ◽  
Ruihua Yang ◽  
...  
Keyword(s):  
Weight Ratio ◽  
Fiber Distribution ◽  
Ring Spinning ◽  
Surface Distribution ◽  
Left Hand ◽  
Spun Yarns ◽  
The Mean ◽  
Compact Spinning ◽  
The Right ◽  
Double Channel

The main aim of this paper is to investigate the fiber distribution on the surface of a kind of novel two-color yarn spun by regulating the feeding ratio of two colored rovings on a modified ring spinning frame, which is named the double-channel spinning frame. The surface distribution ratio ( SDR) and the coefficient of variation of surface distribution evenness ( CV sd) of the two colored fiber strands in the yarns was used to quantify the fiber distribution feature along the yarns based on a purpose-made image acquisition device and the corresponding image processing method. The effect of the weight ratio, roving feeding position and spinning method on the mean SDR and CV sd were studied, and the testing results of the Z-twist and S-twist two-color yarns spun by a modified traditional ring spinning frame as well as the yarns spun by a modified compact spinning frame were compared with each other. The fibers of the left-hand roving are more likely to distribute in the surface of Z-twist yarn, while the fibers of the right-hand roving tend to distribute in the surface of S-twist yarn. Four linear fitting equations of the 19.4 tex Z-twist and S-twist two-color ring spun yarns and two-color compact spun yarns were developed to predict the relationships between the mean SDR and weight ratio of two colored fibers.

scholarly journals Nozzle based compact spinning

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Longdi Cheng ◽  
Wenlian Xue ◽  
Keyi Wang
Keyword(s):  
Compact Spinning

Compact spinning technology

2010 ◽  
pp. 237-260
Author(s):  
M.A.M. El-Sayed ◽  
S.H. Sanad
Keyword(s):  
Compact Spinning

Study on the model of semi-open-end twist in compact spinning with lattice apron

2020 ◽  
pp. 004051752094254
Author(s):  
Ting Fu ◽  
Yuze Zhang ◽  
Nicholus Tayari Akankwasa ◽  
Nanliang Chen ◽  
Huiting Lin
Keyword(s):  
Dynamic Model ◽  
Experimental Test ◽  
Negative Pressure ◽  
Flow Simulation ◽  
Slot Width ◽  
Arc Shape ◽  
Simulation Results ◽  
Compact Spinning ◽  
Suction Slot ◽  
Linear Shape

The twist mechanism of the fiber strand in the condensing zone in compact spinning is complex. This paper proposes a dynamic model to evaluate the additional twist of the fiber strands. Based on the flow simulation in the condensing zone, the fiber trajectory in the suction slot was simulated and obtained. Several spinning parameters such as suction slot angle, suction slot width, negative pressure, and shape of suction slot, were varied to show their effects on the additional twist. The simulation results indicated that by increasing the suction slot angle from 5° to 10° the additional twist increased significantly. Higher negative pressure also leads to an increase in the additional twist. The suction slot width has a greater effect on the fiber trajectory than on the additional twist. An arc-shape suction slot increased the additional twist compared with a linear-shape one. An experimental test conducted revealed a precise agreement with the simulation results.

Mechanical analysis on changing cross-sectional segment of fibre band in condensing zone in compact spinning

2009 ◽  
Vol 100 (5) ◽  
pp. 451-456 ◽  
Author(s):  
J. Wang ◽  
J. P. Yang ◽  
H. G. Bu ◽  
T. Fu ◽  
Q. Xi ◽  
...  
Keyword(s):  
Mechanical Analysis ◽  
Cross Sectional ◽  
Compact Spinning

Multi objective optimization of rotorcraft compact spinning system using fuzzy-genetic model

2017 ◽  
Vol 108 (12) ◽  
pp. 2166-2172 ◽  
Author(s):  
Morteza Vadood ◽  
Parvaneh Kheirkhah Barzoki ◽  
Majid Safar Johari
Keyword(s):  
Genetic Model ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Compact Spinning ◽  
Fuzzy Genetic

Effect of Negative Pressure on Yarn Quality in Compact Spinning with Inspiratory Groove

2012 ◽  
Vol 627 ◽  
pp. 288-292
Author(s):  
Xi Chang Zhang ◽  
Hai Xia Zhang ◽  
Long Di Cheng
Keyword(s):  
Energy Consumption ◽  
Flow Field ◽  
Negative Pressure ◽  
Yarn Quality ◽  
Compact Spinning ◽  
Selection Of ◽  
Fluent 6.3

The flow field in condensing zone of compact spinning with inspiratory groove was developed with Fluent 6.3 and the distribution of velocity was analyzed too. Also the effect of negative pressure on the yarn quality was analyzed and the experiment was done to prove the effect of negative pressure on the yarn qualities. The results show that the fiber can not be compacted well when negative pressure is too small, but it will add the energy consumption, attach the fibers firmly to the bottom of the compact groove by the effect of flow field and reduce the fiber migration, cause the fibers to be absorbed from the holes or the holes to be plugged when the negative pressure is too big. Therefore, in order to ensure the fibers being compacted well and reduce the energy consumption, the selection of negative pressure in compact spinning with inspiratory groove should be less than -3000pa.

Analysis of the Additional Twists on the Fiber Band in Compact Field of Compact Spinning

2011 ◽  
Vol 175-176 ◽  
pp. 380-384
Author(s):  
Jun Wang ◽  
Han Guang Liu ◽  
Jian Ping Yang ◽  
Guang Wei Chen ◽  
Ting Fu
Keyword(s):  
Mathematic Model ◽  
Factors Affecting ◽  
Tilting Angle ◽  
Compact Field ◽  
Spun Yarn ◽  
Compact Spinning ◽  
Spinning Speed ◽  
Suction Slot

Based on the analysis of the motion of fiber band in compact field, a mathematic model is proposed in this article. The factors affecting the additional twists and final twists of the compact spun yarn, such as diameter of the fiber band in the compact field, tilting angle of suction slot in profile tube and spinning speed, were discussed in detail. The validity of the model was validated by experiments.

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