Yarn Joining with Elongation-Relaxation for Interlaced DTYs
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Solution Overview
Problem
Existing yarn joining devices fail to properly join tightly interlaced yarns such as DTYs due to the inability to loosen fibers and untwist the yarns for effective interlacing.
Innovation Solution
A yarn joining device with an interlacing means, first and second gripping means, and a movement mechanism, controlled by a controlling means, that elongates and relaxes the yarns before interlacing to loosen fibers and untwist them for proper joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed air is injected to tightly interlaced yarns such as DTYs, then the yarns are loosened and untwisted, but the fibers of the yarns are not loosened and interlacing cannot be performed
Solution Approach 1:
The patent applies preliminary action by repeatedly elongating and relaxing the yarns before interlacing. The controlling means controls the movement mechanism to repeatedly elongate and relax the two yarns gripped by the yarn gripping means, which loosens the fibers and untwists the yarns, making them suitable for subsequent interlacing by the interlacing means
Solution Approach 2:
The patent applies dynamics by introducing a movement mechanism that dynamically elongates and relaxes the yarns. The controlling means controls the movement mechanism to repeatedly change the length of the yarns, transforming the static yarn state into a dynamic process that loosens tight interlacing and prepares the yarns for effective joining
2Reliability
If the device structure is expanded to handle tightly interlaced yarns, then yarn joining capability is improved, but the device size increases excessively
Solution Approach 1:
The patent applies universality by designing a multi-functional system where the movement mechanism serves multiple purposes: it elongates the yarns to loosen fibers, relaxes the yarns to untwist them, and positions them for interlacing. This integrated approach handles tightly interlaced yarns effectively without requiring separate specialized components, thus avoiding excessive device size increase
3Reliability
If the yarns are elongated and relaxed repeatedly, then the fibers are loosened and untwisted, but the processing time increases
Solution Approach 1:
The patent applies continuity of useful action by implementing a repeated elongation-relaxation cycle that continuously works to loosen fibers and untwist yarns. The controlling means automates this repeated process, ensuring that each cycle contributes to the overall goal of preparing the yarns for interlacing, maintaining continuous useful action rather than intermittent or redundant operations
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 device effectively joins interlaced yarns by untwisting them through controlled elongation and relaxation, ensuring secure and even interlacing without excessive device size increase or yarn damage.
Implementation Method 1
an elongation-relaxation control of controlling, after the yarn gripping control, the movement mechanism so as to repeatedly elongate and relax the two yarns gripped by the first yarn gripping means and the second yarn gripping means
Data Source
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AI summary
An object of the present invention is to make it possible to join yarns, which have been interlaced, together. A yarn joining device 6 includes an interlacing means 61, a first clamp 62 and a second clamp 63 which are provided on both sides of the interlacing means 61, a movement mechanism 90, and a controller 69. The controller 69 is programmed to execute an elongation-relaxation control of controlling the movement mechanism 90 so as to repeatedly elongate and relax two yarns Y (i.e., yarns Y1 and Y2) gripped by the first clamp 62 and the second clamp 63. The controller 69 is programmed to execute, after the elongation-relaxation control, an interlacing control of controlling the interlacing means 61 so as to interlace the two yarns Y (i.e., yarns Y1 and Y2).