Yarn End Untwisting Pipe Injection Hole Geometry
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Solution Overview
Problem
Conventional yarn end untwisting pipes require increased air pressure to achieve necessary air flux for untwisting, which is undesirable due to higher air consumption and energy consumption.
Innovation Solution
A yarn end untwisting pipe design featuring an injection hole with a first opening part and a second opening part, where the second opening part is positioned closer to the end, forming elongated holes orthogonal to the axial direction, allowing a larger air flux without increasing air pressure, by optimizing the shape and orientation of the injection hole to enhance airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the pressure of air supplied to the yarn end untwisting pipe is increased to increase air flux, then the air flux increases, but air consumption and energy consumption increase
Solution Approach 1:
The invention changes the geometric parameters of the injection hole, specifically making the inlet opening larger than the outlet opening. This parameter modification allows air to flow more easily into the pipe while maintaining controlled exit, achieving the required air flux without increasing supply pressure, thus reducing energy consumption
Solution Approach 2:
The invention transitions from considering only the cross-sectional area of the injection hole to considering the three-dimensional geometry including the relationship between inlet and outlet openings. By optimizing the hole shape in multiple dimensions (tapered configuration), the air flux is enhanced through improved flow dynamics rather than simply increasing opening area or pressure
2Quantity of substance
If the pressure of air supplied to the yarn end untwisting pipe is increased to increase air flux, then the air flux increases, but air consumption increases
Solution Approach 1:
By modifying the geometric parameters of the injection hole to have a larger inlet than outlet, the invention optimizes air flow efficiency. This allows sufficient air flux to be achieved at lower supply pressures, thereby reducing the total volume of air consumed while maintaining effective untwisting operation
3Ease of manufacture
If conventional injection hole design is used, then manufacturing is simple, but air flux is insufficient without increasing pressure
Solution Approach 1:
The invention modifies the injection hole parameters by creating a tapered shape with larger inlet and smaller outlet openings. This geometric change can be achieved through standard manufacturing processes like drilling at an angle or using a tapered drill bit, maintaining manufacturing simplicity while significantly improving air flux characteristics
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
Secures the necessary air flux for untwisting the yarn end without increasing the air pressure supplied, reducing air consumption and energy usage while maintaining effective yarn untwisting performance.
Implementation Method 1
a yarn end is untwisted by using a sucking effect generated by injecting the air
Data Source
Figure 1
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AI summary
A first yarn end untwisting pipe (40A) includes a hollow pipe main body (41) that extends in an axial direction (D1). An injection hole (43) is formed in a peripheral wall (42) of the pipe main body (41). A first opening part (45), which is an inlet of the injection hole (43), is formed on an outer surface of the peripheral wall (42), and a second opening part (46), which is an outlet of the injection hole (43), is formed on an inner surface of the peripheral wall (42). The second opening part (46) is positioned closer to a second end (41b) than the first opening part (45). The first opening part (45) is an elongated hole that extends in a width direction (D3) that is orthogonal to the axial direction (D1).