Adjustable Conveyor Beds for Winder Bobbin Adaptation
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Solution Overview
Problem
Automatic winders face challenges in adapting to bobbins of different sizes due to varying yarn geometry, leading to inefficient operation and potential yarn breakage from centrifugal forces, requiring costly and complex adjustments to balloon restraint devices and peg positions.
Innovation Solution
The winder is adapted by adjusting the level of conveyor belts and beds to maintain a constant distance between the bobbin top and guide members, allowing for efficient processing of bobbins of different sizes without the need for replacing components or using different pegs, ensuring consistent yarn unwinding and minimizing centrifugal stresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the winder uses fixed conveyor belts and beds for all bobbin sizes, then the device complexity is reduced, but the adaptability to different bobbin sizes deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the conveyor belts and beds adjustable in position vertically. The conveyor belts can be moved up or down along the winder structure, and the beds can be adjusted to different heights, allowing the system to adapt to bobbins of varying lengths without requiring replacement of components. This dynamic adjustability resolves the contradiction by enabling versatility through simple positional changes rather than complex component swaps.
2Reliability
If the balloon restraint devices are adjusted for each new bobbin size, then the yarn breakage is prevented, but the operational time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the conveyor belts and beds at appropriate positions for different bobbin sizes. The system allows operators to select and switch between pre-established configurations rather than adjusting individual restraint devices for each bobbin. This reduces the time required for adaptation while maintaining yarn integrity, as the belt positions are designed to work with various bobbin lengths from the outset.
3Productivity
If different pegs are used for different bobbin sizes, then the unwinding efficiency is optimized, but the device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing a single type of peg that can accommodate bobbins of different sizes through the adjustable conveyor belt system. Instead of requiring multiple specialized pegs for different bobbin dimensions, the universal peg works with all bobbin sizes when the conveyor belts are positioned appropriately. This reduces device complexity and cost while maintaining unwinding efficiency across various bobbin types.
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
This solution simplifies the adaptation process for new batches of bobbins, reduces operational complexity, and maintains efficient yarn unwinding across varying bobbin sizes, preventing yarn breakage and energy wastage, while allowing for efficient operation with different spinning frames.
Implementation Method 1
The conveyor belts are provided with a degree of friction sufficient to prevent slipping on the bobbins and tubes
Implementation Method 2
The yarn being unwound acquires, due to the centrifugal force on the yarn itself, a trajectory that is curved and swollen outwards forming the so-called 'balloon' 13 upon detachment from the bobbin itself, generating considerable centrifugal stresses which are converted into strains that can cause the yarn to break
Data Source
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Figure 3A
AI summary
Device for adapting a winder to the length of the bobbins to be processed, by means of which the height of the top of the bobbin being unwound is maintained constant, such bobbin in erect position on a transport peg in a transverse path supported on beds whose level is modified from time to time with respect to the path of the yarn in the members processing such yarn from the bobbin to the take-up package.