Position-Changeable Idle Roller for Electrode Sheet Rewinding
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Solution Overview
Problem
Existing electrode sheet rewinding processes are inefficient due to manual handling of PET film, leading to reduced work efficiency and potential foreign matter introduction.
Innovation Solution
An electrode sheet rewinding apparatus with a position-changeable idle roller system, utilizing first and second driving means to automatically connect and position the PET film, forming a roll path for efficient rewinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual handling of PET film is used to form roll path, then device complexity is reduced, but productivity decreases and foreign matter may be introduced
Solution Approach 1:
The idle roller is designed to be position-changeable between a first position (where it contacts the PET film to guide it onto the bobbin) and a second position (where it contacts the electrode sheet to guide it onto the bobbin). This dynamic repositioning allows the same roller to serve multiple functions in the automated process, eliminating the need for separate manual handling steps while maintaining a relatively compact apparatus structure.
Solution Approach 2:
The automated idle roller positioning system performs the function that was previously done manually. The first driving means automatically moves the idle roller to the appropriate position and maintains it there during the rewinding process, enabling the system to serve itself without human intervention, thereby improving productivity while controlling device complexity through automation.
2Object-affected harmful factors
If manual handling of PET film is used, then device complexity is reduced, but foreign matter generation increases
Solution Approach 1:
The patent replaces manual mechanical handling with an automated mechanical system. The idle roller, positioned and moved by driving means, automatically guides the PET film and electrode sheet onto the bobbin without human contact. This substitution eliminates the introduction of foreign matter from manual handling while using a controlled mechanical system that can be designed to minimize contamination.
3Productivity
If automated idle roller positioning is implemented, then productivity increases, but device complexity increases
Solution Approach 1:
The idle roller is designed as a multi-functional component that can contact both the PET film and the electrode sheet by changing its position. This universality allows a single component to perform multiple functions in the automated process, reducing the total number of components needed and thereby limiting the increase in device complexity while still achieving high productivity through automation.
Solution Approach 2:
The idle roller's ability to dynamically change position between contacting the PET film and the electrode sheet allows the system to automate multiple steps with a single movable component. This dynamic design improves productivity by enabling continuous automated operation while controlling device complexity by using one versatile component instead of multiple fixed components.
Data Source
AI summary
An electrode sheet rewinding apparatus for rewinding an electrode sheet includes a bobbin having a PET film wound therearound, a bobbin holder configured to hold the bobbin, a base plate located under the bobbin holder and configured to support the bobbin holder, a roller type touch roll configured to press an electrode sheet rewound around the bobbin above the bobbin to prevent meandering of the electrode sheet, a vertical plate located at one side of the base plate, the touch roll attached to the vertical plate, and an idle roller unit configured to form a tangential line to the electrode sheet rewound around the bobbin together with the touch roll. The idle roller unit includes an idle roller configured to maintain tension of the electrode sheet and to form a tangential line to the electrode sheet and two driving mechanisms configured to change the position of the idle roller.