Electrostatic Fiber Twisting Device With Adjustable Twist Control
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Solution Overview
Problem
Existing electrostatic spinning technologies face issues with poor stability and uniformity in twisting superfine fibers, and the twist degree is difficult to control accurately due to the use of rotating water or air flow, which also complicates the process with high-voltage static electricity requirements.
Innovation Solution
A device comprising an outer sleeve, middle sleeve, and a cylindrical metal rod with a circular truncated cone and guide tip end, along with a high-voltage electrostatic generator, is used to form and twist superfine fibers through electrostatic adsorption and controlled rotation, ensuring uniform distribution and twist adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rotating water flow or air flow is used to drive fiber bundle twisting, then the fiber can be bundled and twisted, but the stability and uniformity of twisting deteriorates and twist degree cannot be accurately controlled
Solution Approach 1:
The patent replaces the mechanical rotating water/air flow system with an electrostatic field-based twisting system. The electrostatic spinning device uses high-voltage electrostatic charge to directly twist and bundle fibers as they are deposited, eliminating the need for separate mechanical twisting mechanisms and achieving more stable and uniform twisting control.
Solution Approach 2:
The patent controls twist degree by adjusting electrostatic field parameters such as voltage magnitude, electrode geometry, and deposition conditions. By changing these parameters, the twist degree can be accurately controlled and reproduced, improving both stability and uniformity compared to mechanical methods.
2Manufacturing precision
If high-voltage static electricity is used for electrostatic spinning, then superfine fiber can be produced, but mechanical bundling and twisting become difficult due to electrostatic isolation requirements
Solution Approach 1:
The patent combines the electrostatic spinning and twisting operations into a single integrated process. The same high-voltage electrostatic field that deposits the superfine fibers also simultaneously twists and bundles them, eliminating the need for separate mechanical twisting steps and resolving the conflict between electrostatic isolation requirements and mechanical operation.
Solution Approach 2:
The patent replaces mechanical bundling and twisting operations with electrostatic field-based twisting. The electrostatic force directly acts on the deposited fibers to twist and bundle them, eliminating the need for mechanical contact and isolation measures while maintaining superfine fiber production quality.
3Productivity
If traditional electrostatic spinning method is used, then non-woven fabric fiber felt is produced, but the application range is limited and fiber tensile strength needs improvement
Solution Approach 1:
The patent introduces dynamic twisting and bundling of fibers during the electrostatic deposition process, transforming the static non-woven fabric structure into a dynamic, ordered arrangement. This creates yarn-like structures with improved tensile strength and enables applications in spinning, sensors, and tissue engineering that were not feasible with traditional non-woven fabrics.
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 stable, uniform, and adjustable twisting of superfine fibers with high continuity, enabling accurate control over twist degree and improving the overall process stability.
Implementation Method 1
a cylindrical metal rod (6) electrically connected with an output electrode of a high-voltage electrostatic generator... due to the electrostatic adsorption effect, the multiple jet flows are self-organized
Implementation Method 2
the outer sleeve is wrapped with a heating ring used for heating a melt in the annular gap
Implementation Method 3
a driving device capable of driving the metal rod to rotate... turning on the adjustable-speed motor to drive the circular truncated cone to rotate, twisting a fiber bundle
Data Source
AI summary
Disclosed is a device for twisting electrostatic spinning superfine fiber. The device comprises an outer sleeve and a middle sleeve, wherein the outer sleeve sleeves the middle sleeve, an annular gap is formed between the outer sleeve and the middle sleeve, a melt inlet communicating with the annular gap is formed in the outer sleeve, a conical hole is formed in the bottom end of the outer sleeve, the top end of the conical hole communicates with the bottom end of the annular gap, and the outer sleeve is wrapped with a heating ring used for heating a melt in the annular gap; a cylindrical metal rod is arranged in the middle sleeve in a penetrating mode, an interval is formed between the metal rod and the middle sleeve, the bottom end of the metal rod is fixedly connected with a circular truncated cone located below the conical hole.