Textile Warping Drum Tension Control via Piezoelectric Actuation
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Solution Overview
Problem
Existing pattern warping machines face challenges in maintaining consistent thread tension across multiple threads, leading to irregularities in the warp quality, especially when processing threads of different materials.
Innovation Solution
Incorporating a tension sensor and thread tensioner in each thread path connected to a control device, allowing for precise adjustment of thread tension through a control circuit, with wireless signal transmission to a main controller, and utilizing a piezoelectric element for precise force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple threads are processed simultaneously through identical thread paths, then productivity increases, but thread tension consistency deteriorates due to material-specific variations
Solution Approach 1:
The patent applies local quality by providing individual tension sensors and tension controllers in each thread path, allowing each thread to receive customized tension control based on its specific material properties. This enables precise adjustment of thread tension for each individual thread while maintaining high productivity through parallel processing of multiple threads.
2Ease of operation
If thread tension is allowed to vary naturally with material properties, then ease of operation is maintained, but warp quality deteriorates due to irregularities
Solution Approach 1:
The system implements self-service by automatically measuring thread tension through sensors and adjusting it via individual tension controllers without requiring manual intervention. The control unit autonomously regulates each thread's tension based on sensor feedback, maintaining warp quality uniformity while keeping the operation simple and automated.
3Manufacturing precision
If individual tension control is implemented for each thread path, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The patent applies universality by using identical tension sensor and tension controller components across all thread paths, with a centralized control unit that manages multiple threads through a unified control system. This standardized approach enables precise individual tension control while minimizing device complexity through component reuse and integration.
4Manufacturing precision
If thread tension is regulated to a setpoint value, then warp quality improves, but energy consumption increases due to active control
Solution Approach 1:
The system implements feedback control by continuously measuring thread tension through sensors and automatically adjusting tension via tension controllers to maintain setpoint values. This closed-loop feedback mechanism ensures consistent pattern warp quality while optimizing energy consumption by only applying control when needed to maintain tension within specified ranges.
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 consistent thread tension control, improving warp quality by compensating for tension variations and allowing for deliberate design features in the pattern warp, enhancing processability and aesthetic properties.
Implementation Method 1
the thread tensioner has a piezoelectric element
Data Source
AI summary
A textile pattern warping assembly (1) has a warping drum (2) with a number of thread guides (7) that move around the drum. The machine further has a turning rail (3) with several bobbins (4) and thread paths between the rail and guides. Each thread path has a thread tension sensor (12) and a thread tightener (14) linked to a thread tension regulator (15). -