Winding Machine Pivotable Pressure Roller Tension Control
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Solution Overview
Problem
Existing winding machines face challenges in producing high-quality wound rolls with uniform tension and efficient replacement of winding cores, often requiring manual intervention and adhesive tapes for starting the winding process.
Innovation Solution
A winding machine design featuring a pivotably mounted winding shaft support, adjustable contact pressure between rollers, a serpentine guide system, and automated components like a cross-cutting device and winding aid, allowing for automatic tension control and core replacement without manual handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple winding mechanism is used, then the device complexity is reduced, but the winding precision and tension uniformity deteriorate
Solution Approach 1:
The patent implements a dynamic tension control system where the pressure roller is mounted on a pivotable arm that can automatically adjust its position. This dynamic adjustment mechanism allows the pressure roller to maintain optimal contact pressure with the winding roll throughout the winding process, compensating for variations in roll diameter and material tension, thereby achieving uniform winding tension without overly complex device architecture
Solution Approach 2:
The patent employs adjustable contact pressure parameters between the pressure roller and winding roll, as well as between guide rollers and the material web. By optimizing and dynamically adjusting these pressure parameters, the system achieves high winding precision and tension uniformity while maintaining a relatively simple mechanical structure
2Extent of automation
If manual intervention is used for core replacement, then the automation level is reduced, but the changeover time is increased
Solution Approach 1:
The patent implements a self-service core replacement system where the winding shaft support is designed to automatically receive and secure new winding cores. The shaft can be laterally inserted into pre-positioned cores, and the system automatically tensions and centers the core during the winding process, eliminating the need for manual intervention and significantly reducing changeover time
Solution Approach 2:
The patent employs preliminary positioning of winding cores before the actual winding process begins. Cores are pre-positioned on the frame, and the winding shaft is ready for lateral insertion. This preliminary arrangement allows for rapid core replacement without disrupting the winding process, achieving fast changeover while maintaining high automation
3Device complexity
If tension fluctuations are allowed to propagate through the guide system, then the guide system complexity is reduced, but the winding quality deteriorates
Solution Approach 1:
The patent introduces a pressure roller as an intermediary element between the guide roller and the winding roll. This intermediary component absorbs and dampens tension fluctuations occurring in the web travel direction before they can propagate to the winding roll. The pressure roller acts as a buffer that maintains stable contact pressure while isolating the winding process from upstream tension variations, thereby preserving winding quality without requiring a complex guide system
Data Source
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AI summary
The invention relates to a machine (1) for winding web-like materials (17) onto a winding core (6) to form a winding roll (37), comprising a winding shaft support (3) pivotably mounted on a frame (2) of the winding machine (1), a pressure roller (11) that can be pressed against the winding roll (37), and a guide roller (16) that can be applied to the pressure roller (11) with the web-like materials (17) interposed. To improve winding quality, the pressure roller (11) is rotatably mounted at one end (10) of a pressure arm (9), and the guide roller (16) is rotatably mounted at one end (15) of a guide arm (12), each of which is pivotably mounted, with the pressure arm (9) being arranged between the winding shaft support (3) and the guide arm (12).