Automatic Yarn Threading Device for Synchronized Multi-Package Winding
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Solution Overview
Problem
Existing yarn winders require complex operations to thread multiple yarns at the same timing, often necessitating multiple operators and resulting in uneven yarn distribution across packages due to timing differences in threading.
Innovation Solution
A yarn winder equipped with automatic yarn threading devices that can switch between single and multiple package formations, allowing for simultaneous threading of yarns onto take-up tubes without the need for complex operations, by using shared and removable threading components to ensure synchronized yarn feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple operators thread yarns onto take up tubes simultaneously, then threading timing is synchronized, but operation complexity increases
Solution Approach 1:
The automatic yarn threading device performs yarn threading operations autonomously without requiring multiple operators. The device includes a yarn holding member, cutter, yarn providing arm, and yarn pressing arm that work together to automatically thread yarn onto the take up tube, eliminating the need for human intervention and achieving synchronized threading through automation rather than coordinated human operators
Solution Approach 2:
The patent replaces the manual mechanical operation of multiple operators with an automated mechanical system. The automatic yarn threading device uses mechanical components (yarn providing arm, yarn pressing arm, cutter) controlled by a central system to perform threading operations, substituting human mechanical actions with automated mechanical actions that achieve precise timing synchronization
2Ease of operation
If one operator threads yarns sequentially onto take up tubes, then operation simplicity is maintained, but threading timing becomes unsynchronized
Solution Approach 1:
The automatic yarn threading device autonomously manages multiple yarns and take up tubes, performing sequential threading operations without human intervention. The device automatically selects which yarn to thread next, positions the yarn providing arm, actuates the cutter, and presses the yarn onto the take up tube, maintaining operational simplicity while achieving precise timing synchronization that a single operator could not accomplish manually
3Extent of automation
If automatic yarn threading devices are provided for all packages, then threading automation is maximized, but device complexity increases
Solution Approach 1:
The automatic yarn threading device is designed as a universal system that can serve multiple packages through a single integrated mechanism. The yarn providing arm and yarn pressing arm can service different take up tubes in sequence, and the device adapts to different yarn types and package configurations, achieving high automation without requiring separate dedicated threading devices for each package
Solution Approach 2:
The automatic yarn threading device incorporates dynamic components that allow it to adapt its position and function for different packages. The yarn providing arm swings about an axis parallel to the take up tube axis, and the yarn pressing arm similarly swings to engage different positions, enabling a single device to dynamically serve multiple packages rather than requiring static dedicated devices for each
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
A winding device capable of forming two packages P by winding yarns Ya and Yb onto respective two take up tubes 19B supported by a single cradle 20 is provided with two automatic yarn threading devices 24a and 24b. Each of the automatic yarn threading devices 24a and 24b has components such as a suction mouth 51, a yarn moving mechanism 52, a yarn providing arm 53, a yarn supporting arm 54, and a yarn pressing arm 55. The yarn providing arm 53 is swung about a shaft 65 which is in parallel to the axis of the take up tube 19B so as to cause the yarn Ya (Yb) to oppose the take up tube 19B. The yarn pressing arm 55 is swung about a shaft 66 which is in parallel to the shaft 65 so as to cause the yarn Ya (Yb) positioned by the yarn providing arm 53 to closely contact the outer circumference of the take up tube 19B. The yarn supporting arm 54 supports the yarn Ya (Yb) by sandwiching the yarn with the yarn pressing arm 55.