Adjustable Yarn Brake Position Sensor Feedback
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Solution Overview
Problem
Current yarn feeding systems lack the ability to easily repeat and transfer yarn brake settings between different textile machines and setups, relying on manual trial and error methods that are time-consuming and complex, especially when using advanced systems with tension sensors.
Innovation Solution
A yarn brake with a defined reference position, detected by a position sensor, allows for the output of yarn tension values, enabling repeatable and transferable settings through a display or storage for future use, reducing complexity and cost by eliminating the need for complex computer systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If advanced systems with yarn tension sensors and controlled tensioners are used to modulate yarn tension during weft insertion, then yarn tension control precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the essential function of tension measurement from complex sensor systems and implements it through a simplified brake element position detection system. The position sensor detects the brake element position directly, providing tension information without requiring expensive yarn tension sensors or complex control tensioners, thus reducing device complexity while maintaining measurement capability
Solution Approach 2:
The patent creates a simplified copy of the tension measurement function by detecting brake element position instead of directly measuring yarn tension. This positional copy provides sufficient information for tension control without replicating the complexity of advanced sensor systems, achieving cost-effective tension monitoring
2Ease of manufacture
If manual trial and error methods are used to adjust yarn brake settings, then ease of manufacture is maintained, but productivity and setup time are reduced
Solution Approach 1:
The patent implements feedback by detecting the brake element position with a position sensor and providing this information to the controller. This feedback mechanism allows the system to automatically determine optimal brake settings based on detected position data, eliminating manual trial and error while maintaining ease of manufacture through automated adjustment
Solution Approach 2:
The system performs self-service by automatically adjusting brake settings based on position sensor detection without requiring manual intervention. The controller uses the detected position information to self-determine the correct brake force, increasing productivity while keeping the manufacturing process simple
3Ease of operation
If mechanical nob or actuator systems are used to set yarn brake position, then ease of operation is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical nob or actuator systems with a position sensor and controller combination. Instead of using mechanical components to physically adjust and maintain brake position, the system uses electronic position detection and control, reducing mechanical complexity while improving ease of operation through automated position management
Data Source
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AI summary
Described are, among other things, methods and devices in an adjustable yarn brake. The adjustable yarn brake (10) is configured to have a reference position set for the adjustable yarn brake. The adjustable yarn brake comprises a position sensor (50) configured to output an output signal indicative of the position of a movable member of the adjustable yarn brake, wherein the brake force of the adjustable yarn brake is set in response to the position of the movable member. Hereby it is possible to re-set a braking force in a cost-efficient manner and with low complexity.