Split Yarn Feeder Cover Structure for Faster Maintenance
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Solution Overview
Problem
The existing yarn feeders for producing false twisted composite yarn require multiple covers that cover the line shaft over its entire axial direction, necessitating frequent removal and installation during maintenance, which complicates the workability.
Innovation Solution
A yarn feeder design featuring a rotary shaft, a cylindrical cover divided into half cover members, and a support member with engaging and fixing portions that allow for simplified mounting and removal of the cover, reducing the number of fastening points and improving workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple covers are used to cover the line shaft over the entire axial direction, then yarn wrapping around the line shaft is prevented, but the number of covers increases and workability during mounting and removal deteriorates
Solution Approach 1:
The cover is divided into two half cover members that can be separated and attached to opposite sides of the support member. This segmentation allows the cover to be easily mounted and removed without requiring complete disassembly, thus improving workability while maintaining full coverage of the line shaft to prevent yarn wrapping.
Solution Approach 2:
The half cover members are designed with engaging portions that can be easily connected and disconnected from the support member. This dynamic connection mechanism allows for quick assembly and disassembly operations, significantly improving ease of operation during maintenance while maintaining the protective function.
2Ease of operation
If the cover is divided into half cover members, then mounting and removal workability is improved, but the structural complexity increases
Solution Approach 1:
The half cover members are designed to be substantially symmetrical, allowing one half cover member to serve as a template for the other. This merging of design principles reduces the actual structural complexity by reusing the same components twice, rather than requiring two completely different half-cover designs.
Solution Approach 2:
The support member is designed with engaging portions that can accommodate both half cover members in a standardized manner. This universal connection interface simplifies the overall structure by using a single design pattern repeated twice, rather than requiring custom connection mechanisms for each side.
Data Source
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AI summary
In a yarn feeder (30), a fixing-side cover member (62) and a detachable-side cover member (64) each comprise a fixing portion (62A, 64A) respectively fastened to a fixing-side housing member (52) and a detachable-side housing member 54 by a fastening bolt (BL2) and further comprise an engaging portion (62C, 64C) respectively engaged with the fixing-side housing member and detachable-side housing member in a manner that prevents relative movement. The fixing-side cover member and the detachable-side cover member can be fixed to a housing by using only one fastening point of the fixing-side cover member and the detachable-side cover member to the housing. Man-hours required for mounting and removing the cover can be reduced compared to the case where two fastening points of the fixing-side cover member and the detachable-side cover member to the housing are used.