Segmented Hollow Guide Shaft for Air-Jet Spinning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing hollow guide shafts in air-jet spinning devices are challenging to machine due to their elongated axial length, making it difficult to form precise fiber passageways, and lack a separate assisting nozzle configuration, which complicates the spinning process.
Innovation Solution
A hollow guide shaft design comprising a first member with an introducing opening and assisting nozzle, and a separate second member with a fiber passageway, where the first member is made of ceramic or stainless steel with a diamond-like carbon coating for reduced friction, and the second member is easily machinable, allowing for shorter axial lengths and improved wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the hollow guide shaft is made as a single long member containing introducing opening, assisting nozzle, and yarn outlet, then all fiber passageways can be formed in one piece, but machining to form the fiber passageway becomes difficult due to the long axial length
Solution Approach 1:
The hollow guide shaft is divided into a first hollow guide shaft (containing introducing opening and first fiber passageway) and a second hollow guide shaft (containing second fiber passageway), both arranged in the fiber running direction. This segmentation reduces the axial length of each individual shaft, making machining of fiber passageways easier while maintaining the complete fiber guidance function.
2Manufacturing precision
If the hollow guide shaft is made very long to include all components, then complete fiber passageway system is achieved, but high precision machining becomes extremely difficult
Solution Approach 1:
By dividing the hollow guide shaft into multiple shorter segments (first and second hollow guide shafts), each segment can be machined with high precision independently. The fiber passageways in each segment are shorter and easier to machine accurately, and the segments are then connected to form the complete passageway system.
3Ease of manufacture
If the hollow guide shaft is made shorter and divided into separate members, then machining becomes easier, but the assisting nozzle configuration is lost
Solution Approach 1:
The assisting nozzle function is integrated into the first hollow guide shaft as an assisting nozzle opening that communicates with the first fiber passageway. This segmentation allows the assisting nozzle to be included in the first shaft while keeping both shafts relatively short and easy to machine.
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 design facilitates easier machining of fiber passageways, reduces friction, and enhances the spinning process by allowing precise alignment and improved airflow, leading to increased spinning speed and efficiency.
Implementation Method 1
the first member is made of ceramic or stainless steel with a diamond-like carbon coating for reduced friction
Implementation Method 2
A swirling air current is generated inside the air-jet spinning device by blowing compressed air from the spinning nozzle and the assisting nozzle
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A hollow guide shaft (38) includes a first member (40) and a second member (50). In the first member (40) are formed an introducing opening (42) through which a fiber bundle (8) is introduced, a first fiber passageway (47) through which the guided fiber bundle (8) passes, and an assisting nozzle (45) arranged so as to generate inside the first fiber passageway (47) a swirling air current that conveys the fiber bundle (8) downstream during yarn discharge spinning. In the second member (50) is formed a second fiber passageway (53) through which the fiber bundle (8) that has passed through the first fiber passageway (47) passes. The second member (50) is arranged as a separate member from the first member (40).