Air-Jet Spinning Unit Yarn Removal Detection
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Solution Overview
Problem
Conventional spinning units lack a mechanism to detect whether a spun yarn has been successfully removed from the yarn hooking member, leading to potential failures and inefficiencies in the yarn removal process.
Innovation Solution
Incorporating a yarn removal detecting section, which can be integrated into the wax applying device or the service cart, to detect the movement and traveling state of the spun yarn, ensuring accurate detection of yarn removal from the yarn hooking member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a yarn removing member is used to remove spun yarn from the yarn hooking member, then the yarn removal process is automated, but there is no detection mechanism to confirm successful removal
Solution Approach 1:
A yarn removal detecting section is introduced to provide feedback on whether the yarn has been successfully removed from the yarn hooking member. The detecting section includes a sensor that detects the presence or absence of yarn, and a control unit that receives the detection signal and determines removal status, enabling automated confirmation of the yarn removal process.
2Device complexity
If no detection mechanism is provided for yarn removal, then the device complexity is reduced, but potential failures in the yarn removal process cannot be identified
Solution Approach 1:
The yarn removal detecting section performs preliminary detection before the yarn removal process is considered complete. The control unit determines whether removal has been achieved based on detection signals, and can issue alerts or notifications if removal has not been successful, preventing potential failures before they affect production.
3Device complexity
If the yarn removal detecting section is integrated into the existing spinning unit, then additional device complexity is minimized, but the detection functionality is added
Solution Approach 1:
The yarn removal detecting section is integrated with the existing yarn removing member and control unit of the spinning unit. The sensor is positioned to detect yarn presence in the removal area, and the control unit combines the detection functionality with existing control operations, minimizing additional device complexity while adding detection capability.
Data Source
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AI summary
A spinning machine includes an air-j et spinning device (9) adapted to produce a spun yarn (10) by twisting a fiber bundle (8), a yarn accumulating roller (21) provided downstream of the air-jet spinning device (9) and adapted to temporarily accumulate the spun yarn (10) by rotating and winding the spun yarn (10) around an outer peripheral surface (21a) thereof, a yarn hooking member (22) provided downstream of the yarn accumulating roller (21) and adapted to wind the spun yarn (10) around the outer peripheral surface (21a) of the yarn accumulating roller (21) by integrally rotating with the yarn accumulating roller (21) while being in contact with the spun yarn (10), a yarn removing lever (28) that can remove the spun yarn (10) from the yarn hooking member (28), and a yarn removal detecting section that detects a removal of the spun yarn (10) from the yarn hooking member (22) by the yarn removing lever (28).