Half-slide matched device for ultra-smooth yarn reconstruction
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Solution Overview
Problem
Conventional methods for reducing yarn hairiness are ineffective in achieving ultra-smooth and strong yarns, particularly for high-count yarns with hard spun fibers like ramie and wool, as they fail to provide sufficient fiber coherence and strength, and existing vortex spinning machines are limited in producing high-strength, smooth yarns with high-speed and high-efficiency.
Innovation Solution
A half-slide matched device is used to reconstruct yarn hairy structures by combining symmetrically arranged vortex device static and moving parts, creating closed vortex chambers for efficient vortex airflow utilization, which tightly wraps hairiness onto the yarn surface through repeated superimposition and reinforcement, enhancing fiber utilization and yarn strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ring spinning or open-end spinning is used, then yarn production is achieved, but yarn hairiness is generated and surface structure is loose
Solution Approach 1:
The patent applies preliminary action by treating the yarn surface before it enters the sizing process. A vapor treatment device is used to deposit a sizing coating onto the yarn surface in advance, which prevents fiber ends from protruding and causes hairiness during subsequent high-speed processing like winding and warping. This preliminary coating application eliminates the need for post-processing treatments and avoids secondary hairiness generation.
2Strength
If yarn-sheet sizing is used to attach hairiness onto yarn surface, then yarn strength and wear resistance are enhanced, but yarn tears each other and destroys surface sizing coating producing secondary hairiness
Solution Approach 1:
The patent segments the sizing process from the yarn handling process. Instead of using yarn-sheet sizing that causes yarn-to-yarn adhesion and tearing, the invention uses a vapor treatment device that applies sizing coating individually to each yarn strand. This segmentation eliminates the mechanical damage and secondary hairiness caused by yarn sheets while maintaining the strength-enhancing effects of the sizing coating.
3Productivity
If high-speed shuttle-less looms and high-speed warp knitting machines are used, then production efficiency is increased, but yarn hairiness increases sharply and surface structure is damaged
Solution Approach 1:
The patent applies preliminary action by treating the yarn surface before it enters the sizing process. A vapor treatment device is used to deposit a sizing coating onto the yarn surface in advance, which prevents fiber ends from protruding and causes hairiness during subsequent high-speed processing like winding and warping. This preliminary coating application eliminates the need for post-processing treatments and avoids secondary hairiness generation.
4Object-generated harmful factors
If compact spinning technology is used to condense fiber strand, then spinning triangle is reduced and fiber control is enhanced, but fiber migrations are reduced and inner fiber coherence is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the physical state and arrangement of fibers through controlled vapor treatment. The vapor treatment device adjusts parameters such as temperature, humidity, and vapor flow rate to optimize fiber coating without disrupting fiber coherence. This allows the yarn to maintain its structural integrity while reducing hairiness, resolving the contradiction between compact spinning benefits and fiber coherence preservation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves significant reduction in yarn hairiness and enhancement of yarn strength, suitable for high-speed production of ultra-smooth and strong yarns, overcoming limitations of conventional vortex spinning machines and expanding fiber and yarn variety applications.
Implementation Method 1
combining symmetrically arranged vortex device static and moving parts, creating closed vortex chambers for efficient vortex airflow utilization, which tightly wraps hairiness onto the yarn surface through repeated superimposition and reinforcement
Data Source
AI summary
A half-slide matched device and its application for ultra-smoothly reconstructing yarn hairy structure belong to a textile processing field. According to the half-slide matched device of the present invention, a vortex device static part and a vortex device moving part are matched. In practice, multiple devices are connected in tandem. When yarn moves, the parts of half-slide matched device are closed, for efficiently constraining and utilizing the vortex airflow. A directional jet tube one-directionally stretches hairiness on yarn surface to avoid hairiness random dispersion and entanglement, remove yarn surface impurities. Tandem-connected devices repeatedly superimpose and strengthen the reconstructed ultra-smooth yarn structure. The half-slide matched device can be opened when the yarn breaks, which facilitates splicing and maintenance. The half-slide matched device has a reasonable structure and is very convenient for wide application.