Sheet Processing Apparatus Conditional Press Control
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Solution Overview
Problem
Existing sheet processing apparatuses face productivity issues due to the need for a press operation on a sheet bundle to be completed before starting the folding of the next bundle, especially when the number of sheets in the processed bundle is small, leading to inefficiencies in processing time.
Innovation Solution
A sheet processing apparatus that determines whether a press operation is necessary based on the number of sheets in a bundle, incorporating a setting unit to select an operation mode and a control unit to control the press processing accordingly, allowing for optimized processing sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a press operation is performed on every folded sheet bundle to ensure sharpness, then the quality of the folded part is improved, but the productivity is reduced due to longer processing time
Solution Approach 1:
The invention changes the parameter of press operation application from universal (all bundles) to conditional (based on bundle thickness). The control unit determines whether to perform press processing by evaluating the number of sheets in the bundle, thereby optimizing the balance between folded part sharpness and processing efficiency
Solution Approach 2:
Instead of performing press operation on all bundles, the invention applies press processing only to bundles that require it (those with sufficient thickness to benefit from pressing). This partial action approach avoids unnecessary press operations on thin bundles, thereby improving productivity while maintaining quality where needed
2Manufacturing precision
If the press operation is performed on small bundles, then the folded part sharpness is ensured, but the next bundle has to wait causing idle time
Solution Approach 1:
The invention introduces a conditional parameter (number of sheets) to determine press operation execution. When the bundle has fewer sheets below a threshold, the press operation is skipped, allowing the next bundle to be processed immediately without waiting, thus eliminating idle time while maintaining quality for adequate bundles
3Productivity
If concurrent folding and stacking operations are performed to improve productivity, then the processing efficiency is improved, but the press operation becomes a bottleneck
Solution Approach 1:
The invention makes the press operation dynamic and conditional rather than fixed. The control unit dynamically decides whether to execute press processing based on real-time bundle characteristics (sheet count), allowing the system to adapt the press operation timing to match the concurrent stacking rhythm, thereby reducing bottlenecks while maintaining coordination
Data Source
AI summary
A sheet processing apparatus capable of determining whether or not a press operation is to be performed on a folded part of a sheet bundle according to the number of sheets of the sheet bundle. If a folding priority mode is not set on a selection screen displayed on a display unit of the sheet processing apparatus, a controller of the sheet processing apparatus determines whether or not the number of sheets of the sheet bundle indicated in sheet bundle information is equal to or larger than a threshold value. The controller sets a press mode in the sheet bundle information to “press,” if the number of sheets of the sheet bundle is equal to or larger than the threshold value, and sets the press mode to “pressless,” if the number of sheets of the sheet bundle is less than the threshold value.