Winder Contact Roller Tilt Mechanism for Yarn Winding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing winders that adjust contact pressure by tilting a contact roller using an adjusting cylinder are prone to rapid pressure changes and vibrations, leading to improper winding and potential breakdowns if the tilt mechanism fails during yarn winding.
Innovation Solution
A winder design where the contact roller is tilted using a mechanically interlocked moving member, such as a turret table, that adjusts based on the amount of yarn wound, ensuring a consistent tilting angle and reducing the risk of rapid changes in contact pressure, thereby preventing improper winding and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an adjusting cylinder is used to tilt the contact roller based on detected contact pressure, then the contact pressure to each bobbin can be equalized, but rapid pressure changes and vibrations occur if the adjusting cylinder breaks during winding
Solution Approach 1:
The patent replaces the adjusting cylinder (pneumatic/hydraulic system) with a mechanical tilt mechanism that uses the weight of the yarns themselves as the actuating force. The moving member is mechanically coupled to the tilt mechanism, so that as yarn accumulates on the bobbin, the increasing weight automatically tilts the contact roller to maintain parallel alignment with the warped bobbin holder. This mechanical substitution eliminates the risk of rapid pressure changes from actuator failure while maintaining contact pressure equalization.
2Adaptability or versatility
If the contact roller is tilted by rapidly changing pressure from an adjusting cylinder, then the contact roller can adapt to bobbin holder warping, but the contact roller may break at its attachment portion due to vibration
Solution Approach 1:
The patent replaces the rapid pressure-based adjustment system with a gradual mechanical tilting system. The mechanical coupling between the moving member and tilt mechanism ensures that the contact roller tilts gradually as the yarn weight increases, rather than experiencing sudden pressure changes. This eliminates the vibratory stresses that cause attachment portion breakdown while maintaining the ability to adapt to bobbin holder warping throughout the winding process.
3Ease of operation
If a cantilevered bobbin holder is used for easy operation, then the bobbin holder can be easily mounted and operated, but the bobbin holder warps downward toward the leading end as yarn amount increases
Solution Approach 1:
The patent accepts the dynamic warping of the cantilevered bobbin holder as an inherent characteristic and designs the tilt mechanism to dynamically compensate for this warping. Rather than attempting to prevent the warping (which would require a more complex supported structure), the system allows the bobbin holder to warp naturally while the contact roller tilts in response to the changing geometry, maintaining proper contact pressure throughout the winding process.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
In a winder 1, as an amount of yarns Y wound onto bobbins B increases, a turret table 3 rotates in the direction in which a bobbin holder 2 moves away from a contact roller 11. A tilt mechanism 5 transfers, by a cam 31, a cam rod 32, a force multiplying arm 33, a tie rod 34, and a tilt arm 35, the rotation of the turret table 3 to a guide shaft 13 elevatably supports a supporting member 12, so as to tilt the guide shaft 13. As a result, as the amount of the yarns Y wound onto the bobbins B attached to the bobbin holder 2 is increased and the bobbin holder 2 is warped, the contact roller 11 supported by the supporting member 12 is tilted.