Punch Motor Control for Sheet Thickness Adaptation
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Solution Overview
Problem
Existing sheet processing apparatuses require a large electric current or a punch motor with significant driving force to punch thick sheets, leading to inefficiencies and potential damage, as they lack adaptive control mechanisms for varying sheet thickness.
Innovation Solution
A sheet processing apparatus with a controller that adjusts the driving of the punch motor by selecting between 180-degree and 360-degree punching modes based on sheet thickness, optimizing the rotating direction of the actuator to manage the punching blades' movement efficiently, thereby reducing the peak current required and allowing for the use of a smaller punch motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large electric current or punch motor with significant driving force is used to punch thick sheets, then the punching capability for thick sheets is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent implements dynamic adjustment of the actuator's rotating direction based on sheet thickness. The controller switches between first and second rotating directions to optimize punching performance for different sheet types, allowing the system to adapt rather than requiring a permanently oversized motor
Solution Approach 2:
The system changes operational parameters by selecting different rotating directions (first and second directions) based on detected sheet thickness. This parameter adjustment enables the same motor to efficiently handle both thick and thin sheets without requiring multiple motors or excessive motor power
2Force
If a large electric current is used to punch thick sheets, then the punching force is improved, but the energy consumption and potential damage increase
Solution Approach 1:
The system dynamically adjusts the actuator's rotation based on real-time sheet thickness detection. By selecting appropriate rotating directions, the system achieves necessary punching force with minimal energy consumption, avoiding excessive current usage while maintaining punching capability
Solution Approach 2:
The controller receives feedback from the sheet thickness detection unit and adjusts the actuator's rotating direction accordingly. This closed-loop control ensures optimal energy usage by matching the punching action to the actual sheet requirements, preventing unnecessary energy consumption
Data Source
AI summary
A sheet processing apparatus includes a punch motor, an actuator which rotates by driving of the punch motor, a punching blade which punches a sheet by driving of the actuator, and a controller which controls the driving of the punch motor so that approach run is gained, if a thickness of the sheet exceeds a threshold, in a rotating direction of the actuator in which the punching blade does not move at the beginning of the driving of the punch motor.