Spinning Machine Cop Formation Dynamics
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Solution Overview
Problem
Conventional spinning machines face challenges in increasing the winding quantity of yarn without altering the bobbin length or ring rail diameter, leading to frequent bobbin replacements and reduced operational efficiency.
Innovation Solution
A method of forming a cop by winding yarn to an upper limit position with constant upward displacement of the ring rail, then gradually decreasing the chase length while lowering the upper reversal position, allowing for increased winding quantity without changing the bobbin length or diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the winding quantity of cop is increased by making the bobbin thinner or changing the winding shape, then the winding quantity increases, but the bobbin replacement frequency increases and operational efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the ring rail's reversal position adjustable and variable during operation. The upper reversal position is lowered and the chase length is shortened in the later stage of winding, transforming a static winding process into a dynamic one that adapts to increasing winding quantity requirements without changing bobbin dimensions.
Solution Approach 2:
The patent changes key parameters of the winding process: the reversal position of the ring rail and the chase length. By lowering the upper reversal position and shortening the chase length in the later winding stage, the system achieves increased winding quantity while maintaining the same bobbin and ring rail dimensions throughout the operation.
2Quantity of substance
If the diameter of the cop is increased to increase winding quantity, then the winding quantity increases, but substitute ring rails with different diameters must be prepared
Solution Approach 1:
Instead of using multiple static ring rails with different diameters, the patent employs a single ring rail with dynamically adjustable reversal position. The upper reversal position is lowered during operation to effectively increase winding quantity, eliminating the need for inventorying multiple ring rail sizes.
3Quantity of substance
If the length of the bobbin is increased to increase winding quantity, then the winding quantity increases, but the frame of the machine must be changed
Solution Approach 1:
The patent avoids the need for longer bobbins by dynamically adjusting the ring rail's reversal position. The upper reversal position is lowered and chase length is shortened, allowing increased winding quantity to be achieved within the same bobbin length and machine frame configuration.
4Ease of operation
If the upper reversal position of the ring rail is kept constant, then the winding process is simple, but the winding quantity cannot be increased at the end of operation
Solution Approach 1:
The patent transitions from a simple constant-position winding process to a dynamic process where the upper reversal position is lowered and chase length is shortened in the later stage. This dynamic adjustment enables increased winding quantity while maintaining operational simplicity through automated control.
Solution Approach 2:
The control system is pre-programmed with the strategy to lower the upper reversal position and shorten the chase length in the later stage of winding. This preliminary planning enables the system to automatically adjust parameters to maximize winding quantity without complex real-time decision-making.
Data Source
Figure 1
Figure 2
Figure 3A~4B
AI summary
A method of forming a cop (40) by upward winding yarn (Y) around a bobbin (B) in a spinning machine by means of filling building is characterized by the step of winding the yarn (Y) to an upper limit position (UL) of a ring rail (18) by normal winding operation where upward displacement (Du) of a lower reversal position (PL) of the ring rail (18) is constantly the same while a chase length (Lc) is kept constant, and the step of increasing winding quantity of the yarn (Y) by lifting/lowering the ring rail (18) so that the chase length (Lc) gradually decreases while an upper reversal position of the ring rail is lowered from the upper limit position of the ring rail.