Section Blower Deceleration Control for Yarn Winding Waste Removal
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Solution Overview
Problem
Existing yarn winding machines face issues with efficiently removing fly-waste and yarn waste from the filter member, leading to potential degradation of the package quality and machine malfunction, as they lack effective mechanisms to manage the rotational speed of section blowers over time and collect fallen waste.
Innovation Solution
A yarn winding machine configuration that includes section ducts, section blowers, a main duct, and a main blower, with a suction control method that adjusts the rotational speed of section blower blades to reduce the load on the main blower by using a pressure detecting system to initiate deceleration control when rejection material accumulates on the filter member, ensuring continuous operation and efficient waste removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the section blower operates at high rotational speed to maintain suction current flow rate, then the suction effect is improved, but the load on the main blower increases
Solution Approach 1:
The section blower operates periodically between high-speed suction mode and low-speed maintenance mode. The control unit switches between these modes based on detected waste accumulation levels, allowing the system to achieve effective waste removal during high-speed phases while reducing load on the main blower during low-speed phases, thus resolving the contradiction between maintaining suction effectiveness and reducing energy consumption
2Use of energy by moving object
If the section blower stops completely to save energy, then the load on the main blower is reduced, but the suction current flow rate becomes insufficient for effective waste removal
Solution Approach 1:
The section blower operates dynamically at variable rotational speeds rather than stopping completely. The control unit adjusts the rotational speed to a lower level (not zero) when waste accumulation is detected, maintaining sufficient suction current flow rate for effective waste removal while still reducing the load on the main blower compared to continuous high-speed operation
3Productivity
If the rotational speed of section blower blades is changed with passage of time, then the suction current flow rate is optimized, but the control complexity increases
Solution Approach 1:
The control unit uses feedback from waste detection means (such as sensors detecting fly-waste or yarn waste) to automatically adjust the rotational speed of the section blower. This feedback mechanism optimizes the suction current flow rate based on actual waste accumulation conditions without requiring complex manual control, as the system self-regulates based on detected parameters
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 configuration effectively reduces the power consumption of the main blower by managing the suction current flow rates and ensures continuous operation by preventing complete stoppage of section blower rotation, thereby maintaining efficient yarn winding and waste removal.
Implementation Method 1
a section suction device (32) having a blade (32a) that rotates and generates a suction current
Implementation Method 2
a main suction device (38) that generates a suction current in the main duct (37) to move the rejection material
Implementation Method 3
a pressure detecting section (35) that detects negative pressure in at least a region in which the suction current generated by the section suction device acts
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A spinning frame (1) includes spinning units (2), section ducts (31), section blowers (32), filter members (33), a main duct (37), a main blower (38), and a section blower controlling section (39). The section blower controlling section (39) performs a deceleration control of maintaining a rotating state of blades (32a) of the section blower (32) while temporarily reducing a rotational speed of the blades (32a) thereby continuing the rotation.