Surface Winding Carriage for Web Tension Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current traverse winding systems for flexible web materials face challenges with poor tension and speed control, leading to defects, downtime, and increased costs due to complex and costly apparatus requirements, as well as significant spatial needs.
Innovation Solution
A reciprocating carriage assembly with a tension-controlled drive and laydown system, including a core load and unload assembly, and a control system with sensors and processors to maintain constant tension, reducing the need for heavy-duty motors and complex rigging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If heavy duty core winder motors with precise speed and torque control are used, then winding quality is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the complex mechanical core winder motor system with a simpler surface winder motor system. The motor is mounted on a movable carriage that travels along the surface of the spool, eliminating the need for heavy duty motors with complex speed and torque control mechanisms while maintaining winding quality through the alternative surface contact method.
Solution Approach 2:
Instead of driving the spool from the center (traditional core winding), the patent inverts the approach by driving the spool from the surface. The motor contacts the outer surface of the wound material and drives it, reversing the conventional winding mechanism and simplifying the motor requirements.
2Productivity
If traverse winding is used to achieve long spool lengths, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent divides the winding system into separate functional components: a stationary spool, a movable carriage carrying the motor and laydown roller, and an independent drive system. This segmentation allows the carriage to traverse back and forth along the spool surface, achieving long spool lengths through multiple passes without requiring a complex single-pass winding mechanism.
Solution Approach 2:
The patent employs periodic reciprocating motion of the carriage along the spool surface. The carriage moves forward, winds material, reverses, and repeats the cycle, enabling continuous winding of very long spools through repeated periodic actions rather than a single continuous motion.
3Device complexity
If surface winding with movable carriage is used, then device complexity is reduced, but tension control difficulty increases
Solution Approach 1:
The patent incorporates a feedback control system with sensors that monitor tension in the web material during winding. The control system receives tension signals and automatically adjusts motor parameters to maintain optimal tension levels, resolving the tension control difficulty through real-time feedback and automated adjustment.
4Productivity
If spools with large diameter and weight are used, then productivity is improved, but handling and replacement difficulty increases
Solution Approach 1:
The patent designs the system so that the movable carriage can independently service very large spools by traversing along their surface. The self-contained carriage system with integrated motor and laydown roller can accommodate spools of varying sizes without requiring external handling equipment, allowing large spools to be serviced autonomously.
Data Source
AI summary
An improved winding apparatus and system for winding strips of web materials.