Yarn Winding Machine Yarn Leading Section for Reliable Hooking
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Solution Overview
Problem
Existing yarn winding machines face difficulties in reliably hooking a yarn to the traverse guide during resumption of winding, especially with thin yarns, leading to potential yarn breakage and poor package quality due to insufficient tension and easy yarn push-out by the guide.
Innovation Solution
The yarn winding machine incorporates a cradle, contact roller, and a traverse guide with a yarn leading section that includes inclined guiding sections to guide the yarn towards the center of the package, facilitating reliable engagement with the traverse guide, and a hook-shaped yarn hooking section to ensure easy and secure hooking, along with a yarn path guide to prevent entanglement and maintain high-quality winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gate-like guiding frame is arranged along the path of the yarn finger to guide the yarn, then the yarn path is defined, but the yarn cannot be reliably hooked to the yarn guide and may be pushed out causing stitching
Solution Approach 1:
The yarn leading section performs preliminary guidance of the yarn toward the center of the package before the traverse guide attempts to hook it. This preliminary positioning ensures that when the traverse guide moves to hook the yarn, the yarn is already in the optimal position for successful engagement, preventing push-out and stitching issues
Solution Approach 2:
The yarn leading section acts as an intermediary element between the yarn supply and the traverse guide. It mediates the yarn's path by gradually guiding it toward the center, creating smooth transition conditions that facilitate reliable hooking by the traverse guide without direct forceful engagement
2Strength
If weak tension is applied to thin yarn to prevent breakage, then yarn breakage is reduced, but the hooking of the yarn to the yarn guide becomes more difficult
Solution Approach 1:
The yarn leading section performs preliminary guidance of the yarn toward the center of the package before the traverse guide attempts to hook it. This preliminary positioning ensures that when the traverse guide moves to hook the yarn, the yarn is already in the optimal position for successful engagement, preventing push-out and stitching issues
Solution Approach 2:
The system changes the spatial parameter of the yarn path by using the inclined guiding sections to gradually move the yarn from its supply position toward the center of the package. This parameter change in yarn position makes hooking easier without requiring increased tension, thus maintaining yarn integrity while improving hooking reliability
Data Source
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AI summary
An automatic winder includes a bobbin set section, a cradle (23), a contact roller (29), a traverse guide (28), and a yarn leading plate (75, 76). The bobbin set section supplies a yarn of a yarn supplying bobbin. The cradle (23) rotatably holds a package (30), around which the yarn (20) supplied from the bobbin set section is wound. The contact roller (29) makes contact with and rotates the package (30). The traverse guide (28) is provided independently from the contact roller (29). The traverse guide (28) is engaged with the yarn (20) to be wound into the package (30) to traverse the yarn (20). The yarn leading plate (75, 76) makes contact with the yarn (20) applied with tension to lead the yarn (20) towards a center in a winding width direction of the package (30) before the traverse guide (28) engages with the yarn (20).