Compact Sheet Processing Apparatus with Branching Claw Binding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sheet postprocessing apparatuses are large, expensive, and energy-intensive, requiring users to purchase devices capable of binding 50 sheets to enhance efficiency, despite most users binding only a few sheets, leading to inefficiencies and resource wastage.
Innovation Solution
A compact sheet processing apparatus that aligns and binds sheets on an existing conveying path using a branching claw and teeth-like members for compression binding, allowing for low-volume binding without the need for metal staples, enabling efficient alignment and binding of small sheet bundles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sheet postprocessing apparatus capable of binding approximately 50 sheets is purchased to enhance efficiency, then productivity is improved, but device complexity, size, and production cost increase
Solution Approach 1:
The invention divides the binding function into two distinct modes: a first binding mode for binding a first sheet bundle, and a second binding mode for binding a second sheet bundle. This segmentation allows the apparatus to handle different binding volumes appropriately, avoiding the need for a full-capacity binding mechanism to be always active, thus reducing overall device complexity while maintaining high productivity when needed.
Solution Approach 2:
The apparatus dynamically switches between first and second binding modes based on the binding requirements. The control unit determines which mode to activate, allowing the binding mechanism to adapt its operation. This dynamic operation enables the use of a compact binding mechanism that can operate in different modes rather than requiring a permanently configured large-capacity binder, thereby reducing device complexity.
2Productivity
If a sheet postprocessing apparatus capable of binding approximately 50 sheets is purchased, then productivity is improved, but loss of energy increases
Solution Approach 1:
The binding process is segmented into two modes with different energy requirements. The second binding mode is designed for low-volume binding and consumes less energy, while the first binding mode handles high-volume binding. By segmenting the operation, the apparatus only activates the high-energy first binding mode when actually needed, avoiding continuous operation of energy-intensive components, thus reducing overall energy loss while maintaining productivity.
Solution Approach 2:
The control unit periodically determines which binding mode to activate based on the binding requirements. This periodic decision-making allows the apparatus to switch between low-energy and high-energy modes as needed, rather than continuously operating at high energy consumption levels. This periodic action optimizes the balance between productivity and energy loss.
3Reliability
If sheets are aligned and stapled on a stacking tray, then binding is performed, but productivity decreases because another sheet cannot be stacked on the stacking tray during alignment and stapling
Solution Approach 1:
The invention introduces a conveying path as an intermediary between sheet input and the binding location. Sheets are conveyed along this path and can be temporarily held at different positions. This intermediary conveying system allows continuous sheet flow while binding operations are performed on previously conveyed sheets, eliminating the bottleneck where sheets must wait on a stacking tray during binding, thus improving productivity without compromising binding quality.
Solution Approach 2:
The binding mechanism is positioned to perform binding operations on sheets that have already been conveyed and are in the binding position, without requiring other sheets to be stacked on a separate tray during the process. The system serves itself by continuously conveying sheets through the binding zone, allowing overlapping operations where binding of one sheet bundle occurs while the next sheets are being conveyed into position, thereby improving productivity while maintaining reliable binding.
Data Source
AI summary
A sheet processing apparatus performs predetermined processing on a sheet or a sheet bundle. The sheet processing apparatus includes: a conveying unit that conveys a sheet along a conveying path; an aligning unit that, each time a sheet is conveyed by the conveying unit, aligns the sheet; a stacking unit that reverses a conveying direction of a sheet to convey the sheet backward to a branch path branched from the conveying path, and stacks the sheet in the branch path; and a binding unit that binds a sheet bundle aligned by the aligning unit, in the conveying path.