Warp Threading Machine with Sensor-Based Clamping Control
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Solution Overview
Problem
Existing drawing-in machines for warp threads into weaving harnesses face inefficiencies when processing threads with different material properties, requiring manual adjustment of clamping force and speed, which reduces processing efficiency and increases processing time, especially when handling sensitive threads.
Innovation Solution
A drawing-in machine equipped with a measuring device to detect yarn parameters, allowing real-time adjustment of the thread clamp and pulling-in means based on individual thread properties, enabling precise control and optimization of the drawing-in process without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual adjustment of clamping force is used to accommodate different warp thread materials, then processing quality is maintained, but processing time increases and efficiency decreases
Solution Approach 1:
The patent replaces manual mechanical adjustment of the thread clamp with an automated control system that uses sensors to detect yarn parameters (such as diameter, material composition, or tensile strength) and automatically adjusts clamping force and drawing-in speed. This substitution eliminates manual intervention while maintaining optimal processing parameters for different yarn types, thereby resolving the contradiction between processing quality and processing time.
Solution Approach 2:
The drawing-in machine is equipped with self-adjusting capabilities through integrated sensing and control systems. The system automatically detects yarn properties and adjusts its own operating parameters (clamping force, drawing-in speed) without external manual intervention. This self-service mechanism allows the machine to adapt to different yarn materials automatically, maintaining high processing quality while minimizing processing time losses associated with manual adjustments.
2Ease of operation
If a fixed drawing-in speed is used for all warp threads, then machine operation is simplified, but sensitive threads may be damaged and processing efficiency is reduced
Solution Approach 1:
The patent implements dynamic adjustment of the drawing-in speed based on real-time detection of yarn parameters. The control system modifies the drawing-in speed dynamically according to the specific properties of each yarn being processed, allowing sensitive threads to be handled at lower speeds while stronger threads can be processed at higher speeds. This dynamic adaptation maintains thread integrity while preserving operational simplicity through automated control.
Solution Approach 2:
The system automatically changes the drawing-in speed parameter based on detected yarn characteristics. When sensitive yarns are detected through sensor measurement, the control system reduces the drawing-in speed to prevent damage. For more robust yarns, the speed can be increased to maintain efficiency. This automatic parameter adjustment resolves the contradiction by maintaining operational simplicity while protecting thread integrity through adaptive speed control.
3Productivity
If compromise clamping force settings are used for mixed material warps, then all threads can be processed, but optimal processing conditions cannot be achieved for any individual thread type
Solution Approach 1:
The patent applies the principle of local quality by adjusting the clamping force specifically for each yarn based on its individual properties detected by the sensing system. Instead of applying a uniform compromise setting to all yarns, the control system tailors the clamping force to match the specific requirements of each yarn type being processed. This localized optimization ensures that each yarn receives the optimal clamping force for its material characteristics, maintaining both processing throughput and processing optimization simultaneously.
Data Source
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AI summary
The machine has a thread trapper (35) for retaining a warp thread (30.1) in elements of a harness. A threading unit is provided for threading the warp thread that is retained by the thread trapper. A control device (25) controls the thread trapper and/or the threading unit. A measurement device (39) determines a thread parameter e.g. color, of the warp thread. The thread trapper and/or the threading unit are controlled depending on the thread parameter that is determined by the measurement device. A memory (26) stores the thread parameter that is determined by the measurement device. An independent claim is also included for a method for threading of a warp thread in elements of a harness.