Swinging Doffing Unit for Yarn Winding Alignment
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Solution Overview
Problem
The existing yarn winding apparatus requires complex operations to adjust the positional relationship between winding units and the doffing device due to rail inclination and warping, leading to significant changes in their positional relationship, which complicates the doffing process.
Innovation Solution
A yarn processing apparatus with a movable working cart that includes a swinging unit attached to a rail, allowing for easy adjustment of the device's position by swinging about a fixed shaft, and a jack member to adjust the gap between abutment units, facilitating precise positioning without external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the doffing device extends downward from the rail to reach the winding units, then the doffing device can perform operations on the winding units, but the positional relationship between the winding units and the doffing device changes significantly due to rail inclination and warping
Solution Approach 1:
The patent applies the dynamics principle by making the swinging unit movable relative to the running unit through a swing shaft. This allows the doffing device to dynamically adjust its position to compensate for rail inclination and warping, maintaining accurate alignment with winding units despite changes in rail geometry. The swinging unit can pivot to counteract positional deviations caused by rail issues.
Solution Approach 2:
The patent implements parameter changes by allowing the positional parameters of the doffing device to vary through the swinging mechanism. The swing angle and position can be adjusted to compensate for rail inclination and warping effects, changing the geometric parameters of the system to maintain operational accuracy despite rail imperfections.
2Manufacturing precision
If the inclination of the rail is adjusted to correct the positional relationship, then the alignment between winding units and doffing device improves, but the operation becomes complicated requiring repeated detachment and reattachment
Solution Approach 1:
Instead of statically adjusting the rail inclination, the patent uses a dynamic swinging unit that can move independently along the rail while maintaining proper positioning. This eliminates the need to detach and reattach the doffing device for adjustments, as the swinging unit can be repositioned dynamically while remaining attached to the rail.
Solution Approach 2:
The patent segments the doffing device into a running unit (attached to rail) and a swinging unit (performing operations). This segmentation allows the running unit to remain fixed on the rail while the swinging unit independently adjusts its position, separating the transportation function from the positioning function and simplifying operations.
3Adaptability or versatility
If the doffing device is positioned far from the rail to reach winding units, then the doffing device can access all winding units, but the positional relationship changes more significantly due to rail imperfections
Solution Approach 1:
The swinging unit provides dynamic positioning capability that allows the doffing device to extend far from the rail to reach all winding units while maintaining positional stability. The swing mechanism compensates for amplified deviations caused by long extension, allowing versatile access without sacrificing precision.
Data Source
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AI summary
An object of the present invention is to easily adjust the positional relationship between yarn processing units and a working cart configured to perform an operation selectively for one of the yarn processing units. A doffing device 3 includes a device main body 100 configured to perform an operation selectively for one of winding units 2, a running unit 101 supported to be movable in a left-right direction by rails 99a and 99b extending along the winding units 2 in the left-right direction, and a swinging unit 102 to which the device main body 100 is attached and which is attached to a lower end portion of the running unit 101. The swinging unit 102 is supported by the running unit 101 to be swingable about a swing shaft 123 extending in the left-right direction. The swinging unit 102 can be fixed to any position within its swing range by bolts 145a to 145c.