Protective Film Peeling Control in Sheet Conveyance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The peeling position of a protective film from a sheet tends to fluctuate due to variations in the speed of the supply reel or peeling-in roll, leading to changes in tension and potential damage to the sheet.
Innovation Solution
A sheet conveyance apparatus with a roll device, peeling unit, acquisition unit, and control unit that controls the peeling position based on acquired information to stabilize the peeling process and maintain consistent tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a peeling-in roll is employed to peel off the protective film, then the protective film can be effectively removed from the sheet, but the peeling position changes due to speed fluctuation causing tension variation and potential sheet damage
Solution Approach 1:
The system employs a sensor to detect the actual peeling position and feeds this information back to a control unit. The control unit then adjusts the rotational speed of the peeling-in roll dynamically to maintain the peeling position within a predetermined range, preventing excessive tension and sheet damage while ensuring effective protective film removal.
Solution Approach 2:
The patent implements dynamic speed control of the peeling-in roll based on real-time peeling position detection. Instead of operating at a fixed speed, the roll's rotational speed is continuously adjusted to compensate for fluctuations and maintain stable peeling conditions, thereby preventing sheet damage while ensuring reliable protective film removal.
2Adaptability or versatility
If the peeling position is allowed to fluctuate with speed variations, then the peeling process adapts to speed changes, but tension applied to the sheet changes causing unnecessary load and potential damage
Solution Approach 1:
The control system uses feedback from position detection to dynamically adjust the peeling-in roll speed, creating a closed-loop control that adapts to speed variations while maintaining constant tension. This prevents excessive force on the sheet while preserving the system's ability to handle speed fluctuations.
Solution Approach 2:
The system changes the operational parameter (rotational speed) of the peeling-in roll dynamically based on detected peeling position. By adjusting this parameter in real-time, the system maintains optimal tension levels despite variations in line speed, preventing sheet damage while adapting to operational conditions.
Data Source
AI summary
A sheet conveyance apparatus includes an acquisition unit that acquires information indicating a peeling position where a protective film is peeled off a sheet, and a control unit that controls a roll device based on the information and moves the peeling position.