Rotating Package Exchange Device for Yarn Tension Control
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Solution Overview
Problem
Conventional package exchanging devices require the running device to move setting devices to exchange packages, leading to inefficiencies in work efficiency and potential yarn breakage due to excessive tension during the yarn joining process.
Innovation Solution
A package exchanging device with a moving device that rotates the collection, supply, and yarn joining devices around a rotation shaft to position them at work stations without needing to move the running unit, including a holding device for yarn supply packages and a rotation mechanism on the peg to prevent yarn breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the running device moves the setting devices to exchange packages, then the package exchange function is achieved, but the work efficiency is reduced due to the need for repeated positioning movements
Solution Approach 1:
Instead of moving the setting devices along the running direction to reach different pegs, the invention inverts the approach by rotating the collection device, supply device, and yarn joining device around a rotation shaft to bring them to the work position. This eliminates the need for the running device to move repeatedly, thereby improving work efficiency and reducing positioning time.
2Reliability
If the yarn joining device joins yarns during package exchange, then continuous yarn supply is achieved, but yarn breakage occurs due to excessive tension
Solution Approach 1:
The invention performs the yarn joining operation after the package exchange is completed, rather than during the exchange process. The collection device collects the old package, the supply device attaches the new package, and only then does the yarn joining device join the yarns. This preliminary sequencing of operations ensures that yarn tension is minimized during exchange, preventing breakage while maintaining continuous supply.
Data Source
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AI summary
A package exchanging device (7) includes: a collection device (40); a supply device (50); a yarn joining device (60); a moving device (70) in which the collection device (40), the supply device (50), and the yarn joining device (60) are disposed and which moves each of the collection device (40), the supply device (50), and the yarn joining device (60) to a work position for a peg (24); and a running carrier (30) which moves a base (34) supporting the moving device (70) in an arrangement direction of creel stands (20), in which the moving device (70) includes a rotation support portion (71) which supports the collection device (40), the supply device (50), and the yarn joining device (60) and is provided so as to be rotatable around a rotation shaft and an exchange unit driving unit (72) which rotationally drives the rotation support portion (71).