Yarn Joining System with Tension-Responsive Locking Mechanism
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Solution Overview
Problem
The existing yarn joining systems for synthetic yarns require human intervention and often result in yarn damage due to excessive tension, leading to decreased quality and efficiency in the entangled portion of the winding package in false-twisting machines.
Innovation Solution
A yarn joining system that includes a yarn joining portion, a guide portion, a locking portion, and an operation mechanism to control yarn tension, allowing for automated yarn end drawing and guiding while maintaining tension within a certain range, and featuring a movable locking portion that adjusts to prevent yarn damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated yarn drawing and guiding is implemented, then productivity is improved by eliminating human intervention, but manufacturing precision deteriorates due to yarn damage from excessive tension
Solution Approach 1:
The locking portion is designed to be movable rather than fixed, allowing it to dynamically adjust its position in response to tension variations during automated yarn drawing. This dynamic adjustment prevents excessive tension that would damage the yarn while maintaining automated operation.
Solution Approach 2:
The system incorporates feedback through the movable locking portion that responds to tension changes. When tension exceeds a certain level, the locking portion moves to relieve the excess tension, and when tension is adequate, it returns to the initial position. This feedback mechanism ensures yarn quality is maintained during automated high-speed operation.
2Productivity
If tension on synthetic yarn is increased to improve drawing efficiency, then productivity increases, but object-affected harmful factors worsen due to yarn damage
Solution Approach 1:
The movable locking portion acts as a cushioning mechanism that preemptively responds to tension increases. Before yarn damage can occur, the locking portion moves to relieve excessive tension, providing protective cushioning against harmful tension peaks during high-speed yarn drawing.
Solution Approach 2:
The system converts the potentially harmful effect of tension fluctuations into a beneficial control mechanism. The movable locking portion uses tension-induced movement to automatically regulate and optimize the tension level, transforming what could be damaging variability into a self-regulating feature that protects yarn quality while enabling efficient drawing.
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
The system enables automated yarn joining operations without human intervention, maintaining yarn tension within a specific range to prevent damage and improve the quality and efficiency of the entangled portion in the winding package.
Implementation Method 1
a movable locking portion provided so that a movable amount from an initial state increases in response to tension acting on the synthetic yarn when the tension becomes larger than a predetermined value
Data Source
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AI summary
A package exchanging device (7) includes: a splicer (66) which entangles a yarn end (Y1) and a yarn end (Y2); first hooks (67a) and (68a) and second hooks (67b) and (68b) which are provided so that a movable amount from an initial state increases in response to a tension acting on a yarn (Y) when the tension becomes larger than a predetermined value and are urged so as to return to the initial state when the tension acting on the yarn (Y) is equal to or smaller than the predetermined value; a first motor (62b) and a second motor (63b) which drive a peg (24) rotatably supporting a yarn supply package (P1); and a drive control unit (90a) which controls a feeding amount of the yarn (Y) fed from the yarn supply package (P1) by controlling the first motor (62b) and the second motor (63b) so that the movable amount is in a first predetermined range.