Winding Frame Angle Adjustment for Textile Bobbin Precision
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Solution Overview
Problem
Existing textile machines struggle to precisely set the rotational angle position of bobbin frames relative to drive rollers, leading to errors due to mechanical tolerances and varying bobbin diameters, which affects the quality of bobbins produced, especially in image winding zones where slippage occurs.
Innovation Solution
A method that sets a rotational angle position by measuring the actual distance between the creel and drive roller, determining a correction value for adjustments, and using a stepping motor or incremental encoder to precisely adjust the creel relative to the drive roller, ensuring accurate contact forces and reducing slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment means are used to move the creel into a target position, then the creel can be approximately positioned according to bobbin diameter, but the exact position cannot be precisely achieved due to mechanical tolerances
Solution Approach 1:
The patent implements a feedback mechanism where a distance measuring device continuously measures the actual distance between the creel and drive roller, compares it with the target distance, and automatically adjusts the creel position to eliminate deviations. This closed-loop control system resolves the contradiction by maintaining both ease of operation through automatic control and high measurement precision through continuous feedback.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated system comprising a distance measuring device, control unit, and stepping motor. This substitution eliminates human error and mechanical tolerance accumulation, achieving precise positioning while maintaining operational simplicity through automated control.
2Device complexity
If mechanical tolerances are not compensated, then the structure remains simple, but the quality of bobbins produced deteriorates due to imprecise creel positioning
Solution Approach 1:
The feedback system automatically compensates for mechanical tolerances in the creel and drive roller assembly by continuously measuring actual distances and making real-time position corrections. This eliminates the need for expensive high-precision mechanical components while maintaining high bobbin quality through software-based compensation.
Solution Approach 2:
The system dynamically adjusts the creel position parameter based on measured deviations, allowing the mechanical structure to remain simple with standard tolerances while achieving high manufacturing precision through parameter optimization and correction.
3Ease of operation
If the creel position is not precisely adjusted, then the structure and operation remain simple, but slippage occurs between the bobbin and drive roller affecting winding quality
Solution Approach 1:
The feedback mechanism ensures reliable contact between the bobbin and drive roller by continuously measuring the actual distance, comparing it with the target distance, and automatically adjusting the creel position to eliminate slippage. This maintains operational simplicity while significantly improving contact stability and winding reliability.
4Device complexity
If manual approximation positioning is used, then no additional measuring devices are needed, but the contact forces between creel and drive roller cannot be precisely controlled
Solution Approach 1:
The distance measuring device provides feedback on the actual creel position, enabling the control unit to calculate and apply the precise contact forces needed between the bobbin and drive roller. This automatic feedback control achieves precise contact force management without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The patent replaces complex manual mechanical adjustment systems with an automated electronic control system using distance measurement and stepping motor actuation. This substitution simplifies the overall structure while enabling precise contact force control through electronic regulation rather than mechanical complexity.
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 method significantly improves the precision of bobbin production by accounting for mechanical tolerances and varying diameters, reducing slippage and improving the quality of cross-wound bobbins, allowing for efficient recalibration of winding stations.
Implementation Method 1
an actual position of the creel with an actual distance between the creel and the drive roller is generated, that the actual distance is measured with a distance measuring device
Implementation Method 2
a stepping motor for setting a rotary angle position of the bobbin frame
Implementation Method 3
the pressure forces occurring at the contact line between the cross-wound bobbin and the winding roller are kept so low that the pressure between the bobbin surface and the surface of the winding roller occurs at different peripheral speeds
Data Source
Figure 1
AI summary
The invention relates to a method for setting a rotational angle position of a spool frame (10) rotatably holding a spool (2, 5) at winding stations (1) of a textile machine (3) producing spools (2, 5), in which a basic rotational angle position of the spool frame is set at the winding stations (1) by moving the spool frame (10) into a target position and thereby creating an actual distance between the spool frame (10) and the drive roller (11), and in the event of a deviation between the actual distance and a target distance, a correction value is determined, wherein in the event of a critical deviation, the correction value is stored and used for future winding processes.