Sheet Processing Apparatus Motor Load Optimization
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Solution Overview
Problem
Conventional sheet processing apparatuses face issues with inconsistent load on the driving motor when additional folding rollers move in different orientations, leading to inefficient folding operations, reduced productivity, and energy wastage due to mismatched driving conditions.
Innovation Solution
A sheet processing apparatus with a pressurizing unit comprising a first and second pressurizing member, where the position of pressurization is shifted along the fold line, and the driving motor conditions are adjusted between orientations to optimize the load distribution, allowing for efficient folding by changing the moving speed and current settings based on the orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving condition of the driving motor is set based on the first orientation (high load) to ensure sufficient torque, then the folding operation can be performed in both orientations, but the moving speed is reduced and productivity decreases
Solution Approach 1:
The patent applies dynamics by making the driving conditions variable rather than fixed. The control unit dynamically adjusts the driving motor's rotation speed and torque based on the detected movement orientation. When moving in the first orientation (high load), the motor operates at lower speed with higher torque. When moving in the second orientation (low load), the motor operates at higher speed with lower torque. This dynamic adaptation resolves the contradiction between reliability and productivity.
Solution Approach 2:
The patent changes the operational parameters (rotation speed and torque) of the driving motor according to the movement orientation. The control unit detects the orientation and adjusts the motor parameters accordingly - using high torque/low speed settings for the first orientation and low torque/high speed settings for the second orientation. This parameter change strategy allows the system to maintain reliability when needed while maximizing productivity when possible.
2Productivity
If the driving condition is optimized for the second orientation (low load) to increase moving speed, then productivity improves, but the folding operation cannot be performed in the first orientation (high load)
Solution Approach 1:
The system becomes dynamic by detecting the movement orientation and adapting the driving conditions in real-time. The control unit monitors the orientation and switches between two sets of driving parameters: one optimized for high-load first orientation movements and another optimized for low-load second orientation movements. This dynamic adaptation enables the system to maintain both high productivity and broad adaptability.
Solution Approach 2:
The patent employs parameter changes by adjusting the driving motor's rotation speed and torque based on the detected orientation. When the second orientation is detected (lower load), the system uses higher speed settings to maximize productivity. When the first orientation is detected (higher load), the system switches to appropriate torque settings to ensure successful folding. This parameter adaptation resolves the contradiction between productivity and adaptability.
3Device complexity
If the same driving condition is used for both orientations, then the system is simple to control, but energy is wasted when moving in the second orientation (low load)
Solution Approach 1:
The patent implements feedback by using the detection unit to monitor the movement orientation and providing this information to the control unit. The control unit then adjusts the driving motor's operating parameters based on this feedback. This feedback mechanism enables the system to avoid energy waste by using appropriate driving conditions for each orientation, while keeping the control logic relatively simple through automated detection and adjustment.
Solution Approach 2:
The system performs self-service by automatically detecting the movement orientation and adjusting its own driving parameters without external intervention. The detection unit and control unit work together to autonomously optimize the motor's operating conditions based on the actual movement orientation, eliminating the need for complex external control systems while reducing energy waste.
Data Source
AI summary
A sheet processing apparatus comprises a pressurizing unit including a first pressurizing member and a second pressurizing member; and a moving unit moving the pressurizing unit and including a driving motor, wherein the position where a sheet bundle is pressurized by the first pressurizing member and the position where the sheet bundle is pressurized by the second pressurizing member are shifted in the direction of the fold line of the sheet bundle, and a driving condition of the driving motor is changed between a first orientation in which the pressurizing unit moves in the positional relation that the first pressurizing member precedes the second pressurizing member and a second orientation in which the pressurizing member moves in the positional relation that the second pressurizing member precedes the first pressurizing member.