Yarn Tail Cutting Tool With Guided Blade Positioning
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Solution Overview
Problem
Existing methods for cutting yarn tails in textile machines rely on worker skill, leading to inconsistent quality and potential damage to the paper tube, increasing the worker's burden.
Innovation Solution
A thread cutting tool with a hook part, pressing part, and a blade part that is rotatably coupled to an operation part via a shaft, utilizing a biasing part and guide part to mechanistically position and cut the yarn tail at a predetermined length, reducing worker dependence and minimizing damage to the paper tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a worker manually cuts the yarn tail using scissors or a cutter, then the cutting work can be performed, but the cutting quality depends on worker ability and increases worker burden
Solution Approach 1:
The cutting tool is designed to automatically position and cut the yarn tail without requiring worker skill. The blade part with biasing mechanism performs the cutting action automatically when the tool is attached to the paper tube, making the system self-sufficient and eliminating dependence on worker ability for cutting precision
Solution Approach 2:
The manual mechanical cutting action by worker-operated scissors is replaced with an automated blade mechanism. The blade part, driven by biasing force, automatically engages and cuts the yarn tail, substituting the worker's manual mechanical action with a self-actuating mechanical system
2Manufacturing precision
If a worker manually cuts the yarn tail, then cutting can be performed, but damage may occur to the paper tube
Solution Approach 1:
The blade part acts as an intermediary cutting element that is specifically designed to cut the yarn tail without contacting or damaging the paper tube. The biasing mechanism controls the blade's engagement, ensuring it cuts only the yarn while the hook and pressing parts maintain the tool's position on the paper tube edge without causing damage
Solution Approach 2:
The cutting action is localized precisely to the yarn tail area. The blade part is positioned and biased to engage only with the yarn tail, creating a localized cutting zone that spares the surrounding paper tube from damage while achieving precise cutting of the intended target
3Productivity
If the yarn tail is cut without proper positioning, then cutting speed increases, but the yarn quality and connection portion quality are degraded
Solution Approach 1:
The tool performs preliminary positioning actions before cutting. The hook part attaches to the inner edge of the paper tube and the pressing part positions the tool, establishing the correct cutting location in advance. This preliminary positioning ensures the blade will cut at the precise required location, maintaining yarn quality while enabling rapid operation
Data Source
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AI summary
[Problem to be Solved] Provided is a thread cutting tool that enables cutting work to be performed irrespectively of ability of a worker and can reduce a burden on the worker in the cutting work of a yarn tail. [Solution to Problem] A body 11 is attached to an edge 106b of a paper tube 106 by a hook part 17 and a pressing part 18. An operation part 12 is coupled to the body 11 via a shaft 24 and is operated to rotate. A blade part 13 that cuts a yarn tail 103 is coupled to the operation part 12 by the shaft 24. An biasing part 14 biases the blade part 13 when the operation part 12 rotates. The body 11 is provided with a guide part 20 and an abutting part 21. By a first rotation operation, the operation part 12 rotates around the shaft 24, the biased blade part 13 abuts the yarn tail 103 and the operation part 12 abuts the body 11 in the abutting part 21. By a second rotation operation, the operation part 12 rotates with the abutting part 21 as a fulcrum, the shaft 24 is guided by the guide part 20, and the blade part 13 slides and moves, so that the yarn tail 103 is cut.