Air Spinning Device Nozzle Block Air Hole Positioning
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Solution Overview
Problem
Conventional air spinning devices produce spun yarns with varying twisting firmness due to fiber characteristics like length and stiffness, requiring adjustments in fiber guides and nozzle blocks, leading to increased operational complexity and fiber loss.
Innovation Solution
The air spinning device features a nozzle block with air holes positioned between 3 mm to 10 mm from the contact surface with the fiber guide, and a fiber guide with adjustable projections or recesses to optimize the spinning chamber capacity based on fiber characteristics, ensuring consistent twisting firmness regardless of fiber type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional air spinning devices utilize swirling airflow to twist fiber bundles, then spun yarn is produced, but the twisting firmness varies depending on fiber characteristics such as fiber length and stiffness
Solution Approach 1:
The fiber guide is designed with a movable portion that can be positioned at different locations along the axial direction, allowing the spinning chamber capacity to be dynamically adjusted according to fiber characteristics such as length and stiffness, thereby maintaining consistent twisting firmness across different fiber types
Solution Approach 2:
The invention changes the geometric parameter of the spinning chamber capacity by adjusting the position of the movable portion of the fiber guide, which directly affects the airflow pattern and twisting action on fibers with different characteristics, enabling optimized spinning for each fiber type
2Adaptability or versatility
If fiber guides and nozzle blocks are adjusted to accommodate different fiber characteristics, then spinning can be adapted to various fibers, but operational complexity increases
Solution Approach 1:
The fiber guide is divided into a fixed portion and a movable portion, where only the movable portion needs to be adjusted to change the spinning chamber capacity. This segmentation simplifies the adjustment mechanism compared to adjusting entire assemblies, reducing operational complexity while maintaining adaptability
Solution Approach 2:
The movable portion of the fiber guide serves multiple functions: it defines the spinning chamber capacity, guides fibers, and its position can be adjusted to accommodate different fiber characteristics. This multi-functionality eliminates the need for separate adjustment mechanisms for each fiber type
3Adaptability or versatility
If conventional air spinning devices are used with different fiber characteristics, then various fiber types can be processed, but fiber loss increases
Solution Approach 1:
By dynamically adjusting the fiber guide position to match fiber characteristics, the spinning chamber capacity is optimized for each fiber type, ensuring proper fiber containment and reducing fiber loss that occurs when using fixed configurations inappropriate for specific fiber lengths and stiffness
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 allows for easy adjustment of the spinning chamber capacity to match fiber characteristics, stabilizing the twisting firmness of spun yarns and preventing fiber loss, while maintaining efficient airflow and contaminant prevention.
Implementation Method 1
supplies air into a spinning chamber to generate a swirling airflow that causes fibers, which form a fiber bundle, to swing
Data Source
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AI summary
An air spinning device (6) includes a nozzle block (63) that includes a through hole (63p) that partially defines a spinning chamber (SC), and an air hole (63a) that is communicable with the spinning chamber (SC); a fiber guide (61) in which a fiber introducing passage (61g) that is communicable with the spinning chamber (SC) is defined; and a spindle (62) in which a fiber passageway (62s) that is communicable with the spinning chamber (SC) is defined. The air spinning device (6) spins a spun yarn (Y) from a fiber bundle (F) by supplying air from the air hole (63a) into the spinning chamber (SC). The air hole (63a) is located such that a point of intersection (IS1) between a central axis of the air hole (63a) and a wall surface of the through hole (63p) is in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface between the nozzle block (63) and the fiber guide (61).