Stepping Motor Suction Nozzle Positioning for Textile Bobbins
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Solution Overview
Problem
Existing textile machine workstations for producing cross-wound bobbins face inefficiencies due to cumbersome manual adjustments required for optimizing the distance between the suction nozzle and the bobbin surface, leading to increased failed thread end take-up attempts and reduced machine efficiency.
Innovation Solution
A method utilizing a stepping motor to quickly and precisely position the suction nozzle at a defined distance from the bobbin surface, with sensor detection and automatic adjustment, allowing for flexible and rapid correction of misalignments, eliminating the need for manual intervention and ensuring consistent thread end pick-up positions across multiple workstations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of suction nozzle stop is used, then the distance between suction nozzle and bobbin surface can be optimized, but the adjustment process becomes time-consuming and reduces machine efficiency
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated motor-driven positioning system. The suction nozzle is positioned using a motor that can be controlled to achieve precise positioning without manual intervention, thereby maintaining measurement precision while eliminating time-consuming manual adjustments and improving machine efficiency.
Solution Approach 2:
The system enables self-positioning of the suction nozzle through automated control. The motor-driven mechanism allows the suction nozzle to automatically adjust its position based on control signals, eliminating the need for operator intervention and enabling the system to serve itself in terms of positioning adjustments.
2Adaptability or versatility
If mechanical suction nozzle stop with multi-part lever linkage is used, then automatic tracking is achieved, but the device complexity increases and adjustment work becomes cumbersome
Solution Approach 1:
The patent extracts and eliminates the complex multi-part lever linkage mechanism from the suction nozzle stop assembly. By removing this complicated mechanical structure, the system achieves automatic tracking through a simpler motor-driven approach, thereby reducing device complexity while maintaining or improving adaptability.
Solution Approach 2:
The complex mechanical lever linkage system is replaced with a motor-driven positioning system. This substitution simplifies the overall structure by replacing multiple interconnected mechanical parts with a single or fewer motorized components, reducing device complexity while preserving automatic tracking functionality.
3Device complexity
If suction nozzle position is not precisely controlled, then the structure remains simple, but the thread end pick-up success rate decreases due to misalignment
Solution Approach 1:
The patent employs a motor-driven positioning system that replaces simple mechanical positioning with controlled motorized adjustment. This enables precise control of the suction nozzle position, ensuring accurate alignment with the thread end and significantly improving the pick-up success rate, while the control system remains relatively simple through electronic control rather than complex mechanical linkages.
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 efficient and precise thread end pick-up with reduced manual effort, minimizing failed attempts and ensuring consistent thread end receiving positions, thereby enhancing the overall efficiency of the textile machine.
Implementation Method 1
the suction nozzle, starting from a sensor-detected position of the suction nozzle, is positioned by executing a predetermined number of steps of a stepping motor in a yarn end take-up position
Implementation Method 2
starting from a sensor-detected position of the suction nozzle
Implementation Method 3
a suction nozzle for picking up a thread end that has run onto the surface of the cross-wound bobbin
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method for operating a workstation (2) of a textile machine (1) which produces crosswound bobbins and is equipped with a winding apparatus (4) for winding a winding-on bobbin (5) and with a suction nozzle (24) which can be driven by an individual motor for receiving a thread end which is wound onto the surface (35) of the crosswound bobbin (5). There is provision according to the invention for the suction nozzle (24), starting from a position of the suction nozzle (24) which is detected by a sensor, to be positioned in a thread-end receiving position (I) by the execution of a respectively predefined step number of a stepping motor (15), in which thread-end receiving position (I) the opening (34) of the suction nozzle (24) is at a defined spacing (a) from the surface (35) of the crosswound bobbin (5).