Air Spinning Drafting Frame Third Compressor Fiber Guidance
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Solution Overview
Problem
Existing drafting systems for air-jet spinning struggle to control the proportion of twisted fibers and guide fibers effectively, leading to insufficient integration of edge fibers and increased fiber loss, which affects yarn strength and uniformity.
Innovation Solution
A third compressor is arranged in the main drafting zone with a passage cross-section slightly larger than the second compressor, ensuring edge fibers are guided without further compression, allowing them to wrap around core fibers and enhance yarn strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a second compressor is arranged in the drafting zone upstream of the main drafting zone to compress the sliver, then fiber integration and yarn strength are improved, but edge fibers are过度 compressed and cannot wrap around core fibers effectively
Solution Approach 1:
The drafting system is divided into multiple zones with different compressor configurations. The second compressor serves the upstream drafting zone with standard compression, while the third compressor serves the main drafting zone with guided fiber flow, allowing each zone to perform its specific function optimally
Solution Approach 2:
Different compression characteristics are applied to different zones. The upstream zone receives strong compression for fiber integration, while the main drafting zone receives gentler compression with enhanced fiber guidance to preserve edge fiber wrapping capability
2Loss of substance
If the passage cross-section of the third compressor is made larger to allow edge fibers to wrap around core fibers, then fiber loss is reduced, but compression effectiveness in the main drafting zone decreases
Solution Approach 1:
The passage cross-section parameter is optimized to be slightly larger than the second compressor, creating a balance between maintaining sufficient compression pressure and allowing adequate space for edge fiber wrapping around core fibers
3Stability of the object's composition
If multiple compressors are arranged in the drafting system to improve fiber integration, then yarn uniformity is improved, but device complexity increases
Solution Approach 1:
The fiber guidance function is extracted from the compression function by adding a dedicated third compressor with optimized passage dimensions in the main drafting zone, separating the compression task (second compressor) from the fiber guidance task (third compressor)
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
This configuration balances compression and fiber guidance, allowing for a controlled increase in twisted fibers and reduced fiber loss, resulting in a stronger and more uniform air-spun yarn.
Implementation Method 1
the sliver is often compressed in the individual drafting fields in order to integrate protruding fibers or fiber ends at the edge of the sliver into the sliver
Implementation Method 2
a second compressor being arranged in the drafting zone of the drafting system upstream of the main drafting zone
Implementation Method 3
the free fiber ends are looped around the conical spinning head of the spinning spindle by means of a circulating air flow and wind up spirally around the so-called core fibers
Implementation Method 4
a third compressor is additionally arranged in a main draft zone, the width of the passage cross section of which is greater, but at most 10 mm greater, than the width of the passage cross section of the second compressor
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a drawing mechanism for the air spinning device which is used for drawing and compressing the fiber strips. The front of the drawing mechanism is provided with a pre-compressing mechanism, an air spinning device is arranged on the rear part of the drawing mechanism, and a second compression mechanism in the drawing area positioned in the front of the main drawing area. According to the invention, the main drawing area is internally provided with a third compression mechanism, the width of the channel cross section of the third compression mechanism is greater than that of the channel cross section of the second compression mechanism by 10mm at the most.