Roving Creel Sensor Units for Remaining Yarn Runtime
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Solution Overview
Problem
Existing roving bobbin creels for ring spinning machines face challenges in accurately determining the remaining running time of yarn batches, leading to inefficient roving bobbin replacements and reduced productivity due to inaccurate calculations.
Innovation Solution
Equipping the roving bobbin creel with sensor units that measure the weight of roving bobbins via strain gauges or pressure sensors on longitudinal beams, cross profiles, or vertical creel rods, which transmit data to a computer device for precise calculation of remaining yarn life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor units are installed on each individual bobbin hanger to measure remaining yarn, then measurement precision is improved, but device complexity increases significantly
Solution Approach 1:
The patent merges multiple measurement points into a single measurement location. Instead of installing sensor units on each individual bobbin hanger, the invention places sensor units only on the longitudinal beams where they measure the combined weight of all bobbins on that beam. This single measurement point provides sufficient information to calculate remaining runtime without the complexity of multiple distributed sensors.
Solution Approach 2:
The longitudinal beams serve multiple functions: they support the bobbin hangers mechanically and simultaneously act as measurement platforms for the sensor units. By making the structural beam multi-functional, the patent eliminates the need for separate measurement devices on each hanger while still achieving accurate weight measurement for remaining yarn calculation.
2Measurement precision
If complex operating methods with multiple sensors per feed spool are used, then remaining runtime determination accuracy is improved, but ease of operation deteriorates due to complexity
Solution Approach 1:
The patent extracts the measurement function from the individual bobbin hanger level and relocates it to the longitudinal beam level. This extraction simplifies the system by removing the need for complex sensor networks on each hanger while retaining the essential measurement capability through weight-based sensing on the beams.
Solution Approach 2:
The system uses the existing structural components (longitudinal beams) to serve the measurement function. The beams that already exist for mechanical support are made to also carry the measurement function through integrated sensor units, eliminating the need for separate complex measurement systems and simplifying implementation.
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
Enables precise determination of the remaining running time of yarn batches, minimizing downtime and improving productivity by ensuring timely roving bobbin replacements and optimizing machine operation.
Implementation Method 1
sensor units that measure the weight of roving bobbins via strain gauges or pressure sensors
Implementation Method 2
sensor units that measure the weight of roving bobbins via strain gauges or pressure sensors
Data Source
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AI summary
The invention relates to a roving creel (2) for a ring spinning machine (1) with at least two creel rows formed by longitudinal beams (3), which can be loaded with roving bobbins (4), wherein the longitudinal beams (3) are supported on vertical creel bars (9) via transverse profiles (8). To ensure that the remaining running time of the roving bobbins (4) suspended in the roving creel (2) can be easily retrieved at any time, the invention provides that the roving creel (2) is equipped with sensor units (6, 14) which measure the quantity of roving present in the creel rows and transmit this information to a computer (7), which then calculates the remaining running time of the roving in the roving creel (2).