Yarn Catch Guide Mechanism for Compact Spun Yarn Take-Up
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Solution Overview
Problem
Existing spun yarn take-up machines require a long moving distance for the yarn catch guide to release the yarn, leading to increased machine size and complexity.
Innovation Solution
The spun yarn take-up machine design includes a yarn catch guide with a groove portion extending orthogonally to the axial direction, allowing for a shorter moving distance to release the yarn by positioning the guide farther from the traverse guide in a second direction, and utilizes a single driving unit to move the guide in both axial and orthogonal directions, simplifying the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the yarn catch guide is moved in the depth direction of the guide groove to release the yarn, then the yarn can be disengaged from the guide groove, but the metal guide has to be moved a long distance
Solution Approach 1:
The patent changes the movement direction of the yarn catch guide from the depth direction of the guide groove to a direction crossing the axial direction of the spool housing. This dimensional change allows the yarn to be released by moving the guide perpendicular to the groove depth, significantly reducing the required movement distance while achieving the same yarn release function.
Solution Approach 2:
Instead of moving the yarn catch guide along the groove depth direction to release the yarn (conventional approach), the patent inverts the approach by moving the guide in a direction crossing the axial direction of the spool housing. This inverse movement strategy achieves yarn release with shorter travel distance.
2Ease of operation
If the yarn catch guide is moved a long distance to release the yarn, then the yarn can be disengaged, but the machine size increases
Solution Approach 1:
By changing the movement direction to cross the axial direction of the spool housing rather than following the groove depth, the patent reduces the spatial footprint required for yarn release operation, thereby decreasing overall machine size.
3Ease of operation
If the yarn catch guide is moved a long distance to release the yarn, then the yarn can be disengaged, but the device complexity increases
Solution Approach 1:
The patent inverts the conventional movement strategy, moving the yarn catch guide in a direction crossing the axial direction of the spool housing instead of along the groove depth. This inversion simplifies the guide moving device by reducing the required stroke length and simplifying the mechanical structure needed to achieve yarn release.
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
A moving distance of a yarn catch guide, which is for catching a yarn traversed by a traverse unit, needed to release the yarn from the yarn catch guide, is reduced. A yarn catch guide 51 is configured to catch a yarn Y introduced into a groove portion 56. When the yarn catch guide 51 is moved from a catching position for catching the yarn Y to a yarn shifting position frontward of the catching position, a guided portion 58 is guided by the first guide groove 62a extending in a front-rear direction. Due to this, the yarn catch guide 51 is parallel translated in the front-rear direction. When the yarn catch guide 51 is moved from the yarn shifting position toward the catching position, the guided portion 58 is guided by a second guide groove 62b that is disposed on one side in the second direction relative to the first guide groove 62a. Due to this, the yarn catch guide 51 is swung with respect to an insertion portion 51b. As a result, the yarn Y disengaged from the groove portion 56, and thus the yarn Y is released from the yarn catch guide 51.