Yarn Winder Vibration Suppression via Dynamic Pressing Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing yarn winders face challenges in simultaneously achieving smooth movement of the support arm and effective suppression of package vibration, due to the inability to actively adjust the biasing force during winding operations.
Innovation Solution
The yarn winder employs a pressing mechanism with a fluid pressure cylinder to change the magnitude of the pressing force during winding, allowing for adjustable friction force to facilitate smooth support arm movement while maintaining effective vibration suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the biasing force of the spring is set large in advance to ensure vibration suppression, then the vibration of the package is suppressed, but the friction force becomes too large and the swing of the support arm cannot be performed smoothly
Solution Approach 1:
The pressing mechanism is designed to dynamically change the magnitude of the pressing force during the winding operation. When the support arm needs to swing, the pressing force is reduced to decrease friction and enable smooth movement. When vibration suppression is needed, the pressing force is increased to increase friction and suppress vibration. This dynamic adjustment resolves the contradiction between smooth operation and vibration suppression.
Solution Approach 2:
The system changes the physical parameter of pressing force magnitude during operation. By adjusting the pressing force from a first magnitude (for smooth swinging) to a second magnitude (for vibration suppression), the system adapts to different operational requirements and resolves the contradiction between ease of operation and vibration control.
2Ease of operation
If the biasing force is set small in advance to ensure smooth swing of the support arm, then the support arm can swing smoothly, but the friction force becomes too small and the vibration of the wound package cannot be sufficiently suppressed
Solution Approach 1:
The pressing mechanism dynamically adjusts the pressing force magnitude based on operational needs. During swinging phases, the pressing force is set to a first magnitude that allows smooth movement. During vibration-prone phases, the pressing force is increased to a second magnitude for effective vibration suppression. This dynamic control resolves the contradiction between smooth operation and vibration suppression.
Solution Approach 2:
The system actively changes the pressing force parameter during the winding operation. By transitioning between a first pressing force magnitude (favoring smooth swing) and a second pressing force magnitude (favoring vibration suppression), the system optimizes performance for different operational states and resolves the contradiction.
3Object-affected harmful factors
If the biasing force required for sufficiently suppressing the vibration is significantly larger than the biasing force sufficient for smooth swing, then the vibration suppression is effective, but it becomes impossible to achieve both smooth swing and vibration suppression simultaneously
Solution Approach 1:
The pressing mechanism is designed to operate at different force magnitudes at different times during the winding operation. When smooth swing is required, the pressing force is reduced to a first magnitude. When vibration suppression is prioritized, the pressing force is increased to a second, larger magnitude. This temporal separation of force requirements resolves the contradiction that would exist if a single fixed force level had to satisfy both opposing requirements simultaneously.
Solution Approach 2:
The system changes the pressing force parameter between a first magnitude (sufficient for smooth swing) and a second magnitude (sufficient for vibration suppression). By actively adjusting this parameter during operation rather than using a fixed value, the system achieves both smooth swing and effective vibration suppression at different appropriate moments, resolving the contradiction.
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 solution enables concurrent smooth movement of the support arm and reliable suppression of package vibration, even when the package density is high, by dynamically adjusting the pressing force in response to operational needs.
Implementation Method 1
the pressing mechanism includes a fluid pressure cylinder which changes the magnitude of the pressing force in accordance with t pressure of supplied fluid
Implementation Method 2
friction force acts between the vibration suppression member and the support arm. This friction force suppresses the vibration of the support arm
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention provides a yarn winder with: a cradle device 21 which has a cradle arm 31 that rotatably supports a bobbin B and which is capable of moving the cradle arm 31 in a predetermined direction crossing the axial direction of the bobbin B; a vibration suppression lever 41 that is pressed against the cradle arm 31 and thereby suppresses the vibration of the cradle arm 31; and a pressing mechanism 61 that pushes the vibration suppression lever 41 against the cradle arm 31. The pressing mechanism 61 is capable of changing the magnitude of the pressing force during the winding operation of a yarn Y and, during the winding operation, a control unit 13 changes the magnitude of the pressing force, sets the magnitude of the pressing force at a first pressing force when an arm driving unit 37 is not driven, and sets the magnitude of the pressing force at a second pressing force when the arm driving unit 37 is driven.