Yarn Winder Roller Support Rigidity via Longitudinal Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The elongation of the bobbin holder in the front-rear direction to accommodate more bobbins decreases the bending rigidity of the roller supporting member, leading to vibrations in the yarn winder, and increasing the cross-sectional area to improve rigidity requires relocating components, thereby increasing the apparatus size.
Innovation Solution
Incorporating a rigidity improving member that extends in the longitudinal direction, fixed to the supporting portions, and shaped to partially or entirely surround the frame, allowing for enhanced bending rigidity without overlapping the bobbin holder and traverse unit, thus maintaining the apparatus size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bobbin holder is elongated in the front-rear direction to increase the number of bobbins, then the productivity is improved, but the bending rigidity of the roller supporting member deteriorates causing vibrations
Solution Approach 1:
The rigidity improving member extends in the front-rear direction (longitudinal direction) perpendicular to the plate member's width, adding structural support in a different dimension without increasing the cross-sectional area in the orthogonal direction. This allows the bobbin holder to be elongated while maintaining rigidity through a different spatial orientation.
Solution Approach 2:
The roller supporting member is segmented into the plate member and the separate rigidity improving member, allowing independent optimization of each component. The plate member provides the basic support structure while the rigidity improving member specifically addresses the bending rigidity issue without interfering with other components.
2Stability of the object's composition
If the cross-sectional area of the plate member is increased to improve rigidity, then the bending rigidity is improved, but the apparatus size increases due to component relocation
Solution Approach 1:
Instead of increasing the cross-sectional area in the orthogonal direction, the rigidity improving member extends in the longitudinal direction, providing rigidity enhancement without requiring additional space in the orthogonal dimension where other components are located.
Solution Approach 2:
The rigidity improving member is strategically positioned and dimensioned to provide local reinforcement exactly where needed for bending rigidity, rather than uniformly increasing the cross-sectional area throughout the plate member, thus avoiding unnecessary increase in overall apparatus size.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The rigidity of a roller supporting member is improved while an apparatus is prevented from being increased in size. A yarn winder 4 includes a bobbin holder 24, a traverse unit 22, a contact roller 25 which is configured to apply a contact pressure to packages P which are formed by winding yarns Y onto bobbins B, and a roller supporting member 26 which rotatably supports the contact roller 25. The roller supporting member 26 includes: arm members 31 which rotatably support at least end portions in the front-rear direction of the contact roller 25 and extend at least radially outward from a radial central portion of the contact roller 25; and a rigidity improving member 32 to which the arm members 31 are fixed at the end portions, the rigidity improving member being provided so as not to overlap the bobbin holder 24 and the traverse unit 22 when viewed in the front-rear direction. When viewed in the front-rear direction, the rigidity improving member 32 has a part which is longer than the arm member 31 in the direction orthogonal to the direction in which the arm member 31 extends.