Sheet Conveying Motor Temperature Control via Time-Based Restriction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image processing apparatuses face challenges in effectively suppressing motor temperature rise during prolonged motor operation, requiring complex configurations for temperature prediction.
Innovation Solution
Implement a control mechanism with first and second determination processing portions to restrict motor drive based on total drive time and elapsed time, switching to low-speed conveying modes when thresholds are exceeded, thereby simplifying temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If motor drive is continuously monitored using complex temperature prediction mechanisms, then motor temperature rise can be suppressed, but device complexity increases
Solution Approach 1:
The patent extracts the essential control function from complex temperature prediction mechanisms by implementing separate determination processing portions that independently monitor drive time and elapsed time. This simplifies the overall control mechanism while maintaining effective temperature management through modular, independent time-based determination blocks.
Solution Approach 2:
The control mechanism is segmented into distinct determination processing portions: a first determination processing portion for total drive time and a second determination processing portion for elapsed time. Each portion operates independently with its own thresholds, dividing the complex temperature control function into manageable, simplified segments that collectively achieve temperature suppression.
2Productivity
If motor drive time is extended to maintain productivity, then output increases, but motor temperature rise accelerates
Solution Approach 1:
The patent implements periodic action through the second determination processing portion that monitors elapsed time since the last drive start. When the elapsed time exceeds a predetermined threshold, the system restricts further drive starts, creating periodic intervals of operation and rest. This allows productivity to be maintained during active periods while preventing continuous operation that would cause excessive temperature rise.
Solution Approach 2:
The control system dynamically adjusts motor operation based on real-time determination of drive time and elapsed time. The first determination processing portion dynamically restricts drive when total drive time exceeds a threshold, while the second portion dynamically prevents restarts when elapsed time exceeds its threshold. This dynamic adaptation allows the system to optimize between productivity and temperature management based on current operational conditions.
Data Source
AI summary
A sheet conveying device includes a motor, a first determination processing portion, and a first restriction processing portion. The motor is used to convey a sheet. The first determination processing portion determines, each time a predetermined determination timing arrives during drive of the motor, whether or not a total drive time of the motor in a predetermined determination period up to the arrival of the determination timing exceeds a predetermined first time. The first restriction processing portion restricts the drive of the motor when the first determination processing portion determines that the total drive time exceeds the first time.