Rotatable Peg Yarn Supply Package Attachment System
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Solution Overview
Problem
The existing yarn supply package attachment systems for false-twist texturing machines are cumbersome and prone to worker error, as the pegs in the creel stand can become misaligned, leading to contact issues and difficulty in distinguishing between cap attachment and yarn joining completion states, especially when the pegs are in the second rotation state.
Innovation Solution
A yarn supply package attachment system that includes a creel stand with rotatable pegs capable of three distinct states, allowing for compact arrangement and easy recognition of work completion, where the pegs are designed to prevent contact between adjacent yarn supply packages and include an attachment mechanism that rotates the pegs to a third state for clear visualization of work status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the peg is left in the second rotation state after the yarn supply package is attached to the attachment mechanism, then the yarn supply package can be attached, but the worker cannot distinguish whether cap attachment work and yarn joining work are completed
Solution Approach 1:
The patent applies visual differentiation through color coding or distinct visual markers on the peg body to indicate different rotation states. The peg body includes a first portion and a second portion that can be positioned at different angles, with each position corresponding to a specific work status. This visual indication system allows workers to immediately recognize whether cap attachment and yarn joining work have been completed without needing to inspect the work area closely.
Solution Approach 2:
The patent implements a feedback mechanism where the peg's rotational position provides immediate visual feedback about the work completion status. The attachment mechanism rotates the peg to specific positions (first rotation state, second rotation state, or intermediate state) that correspond to different stages of work completion. This feedback loop allows workers to understand the current status and take appropriate actions.
2Area of stationary object
If the yarn supply package support portions are arranged closely to make the creel stand compact, then the creel stand size is reduced, but adjacent yarn supply packages contact each other when pegs are in the second rotation state
Solution Approach 1:
The patent employs dynamic positioning of the pegs through rotational movement. The pegs can rotate between different states: a first rotation state where yarn supply packages are spaced apart to prevent contact, and a second rotation state where they are positioned for attachment operations. This dynamic adjustment allows the system to maintain compact arrangement while avoiding interference during different operational phases.
Solution Approach 2:
The patent divides the operational cycle into distinct segments or states. The peg rotation is segmented into specific positions: an intermediate rotation state for attachment work, a first rotation state for preventing package contact during normal operation, and potentially other positions for different tasks. This segmentation allows optimized positioning for each specific function.
3Ease of operation
If the peg is rotated to the first rotation state after attachment, then the yarn supply package faces the correct direction for yarn supply, but it becomes indistinguishable from the state where work is already completed
Solution Approach 1:
The patent uses visual indicators such as different colored portions on the peg body or distinct visual features that are visible in different rotation states. The peg body includes a first portion and a second portion with different visual characteristics. When the peg is in the first rotation state versus the second rotation state, these visual features present different appearances to the worker, enabling clear differentiation of work status while maintaining proper yarn supply orientation.
Solution Approach 2:
The patent introduces asymmetry in the peg design, where the peg body has non-uniform features or asymmetric positioning of visual indicators. This asymmetry ensures that different rotation states produce visually distinct appearances, allowing workers to differentiate between completion states even when the yarn supply orientation is similar. The asymmetric design breaks the visual symmetry that would otherwise make states indistinguishable.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A yarn supply package exchange system includes a creel stand (20) which includes a pair of pegs (25, 25A, 25B) and a package exchange device which attaches a yarn supply package to the peg (25, 25A, 25B). Each of the pegs (25, 25A, 25B) is provided to be rotatable between a first rotation state (C1) in which the yarn supply package faces a direction of supplying a synthetic yarn (Y) to a processing portion and a second rotation state (C2) in which the yarn supply package faces an attachable direction of the yarn supply package using the package exchange device. The package exchange device attaches the yarn supply package to the peg (25, 25A, 25B) in the second rotation state (C2) and then rotates the peg (25, 25A, 25B) to a third rotation state (C3) corresponding to one state between the first rotation state (C1) and the second rotation state (C2).