Yarn Winding Machine Restriction Guides for Bobbin Alignment
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Solution Overview
Problem
Existing yarn winding machines face issues where yarns spread excessively when disengaged from the traverse device, leading to difficulties in threading and potential yarn breakage due to falling, especially when the yarn feed roller is longer than the bobbin holder, causing yarns to fall outside the bobbin range.
Innovation Solution
The yarn winding machine incorporates restriction guides and a movement mechanism that restricts yarns within the bobbin holder's range, using a sliding mechanism to maintain yarns within the axial direction of the bobbins, preventing excessive spreading and facilitating threading, and allowing easy retraction when not required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the yarn feed roller is longer than the bobbin holder in the axial direction, then more yarns can be fed simultaneously, but the yarns spread over a wider range than the bobbin holder range making threading difficult
Solution Approach 1:
The patent introduces a yarn path changing member as an intermediary device between the yarn feed roller and the bobbin holder. This member includes guide surfaces that redirect the yarns from their original spread-out paths to concentrated paths that align with the bobbin holder range, enabling both high-capacity feeding and easy threading operations
2Adaptability or versatility
If the yarns are disengaged from the traverse device, then the bobbin can be switched, but the distance between yarns becomes narrower and yarns come closer to the center causing potential issues
Solution Approach 1:
The yarn path changing member is positioned to act on the yarns before they are disengaged from the traverse device. By preliminarily adjusting the yarn paths through its guide surfaces, it prevents the yarns from converging toward the center when disengaged, maintaining proper spacing for smooth bobbin switching operations
3Productivity
If the yarns spread over a wider range than the bobbin holder range, then more yarns can be processed, but the yarns may fall on the outer side of bobbins during winding resulting in yarn breakage
Solution Approach 1:
The yarn path changing member serves as a mediator that receives yarns from the high-capacity yarn feed roller and redirects them through guide surfaces to paths that align precisely with the bobbin holder range. This ensures high processing capacity while preventing yarns from falling outside the bobbins during winding, thereby eliminating yarn breakage risks
Data Source
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AI summary
A yarn winding machine includes restriction guides 60a and a movement mechanism 70a. The restriction guides 60a are respectively arranged so as to correspond to both sides of a range in an axial direction of a plurality of bobbins 90, and restrict the plurality of yarns 91 when being held by a yarn disengagement guide so that positions of the yarns 91 in the axial direction of a bobbin holder 42 are within the range in the axial direction of the plurality of bobbins 90 held by the bobbin holder 42. The movement mechanism 70a allow for movement of the restriction guide 60a between a restriction position where the restriction guide acts on the yarns 91 to restrict the yarns 91 and a retracted position where the restriction guide is retracted from the restriction position. An action part is positioned closer to the yarn path than an attachment part in the direction perpendicular to the axis, both when the restriction guide is at the restriction position and when the restriction guide is at the retracted position.