Sheet Binding Device with Edge Pressing and Tape Attachment
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Solution Overview
Problem
Existing sheet binding devices often result in a low rigidity sheet bundle, causing the tip end portion to buckle during the binding process, which affects the quality and strength of the bound portion.
Innovation Solution
A sheet binding device incorporating a tape attachment unit and a sheet support unit that shifts multiple sheets in the edge portion of the sheet bundle and presses the region adjacent to the tape attachment area to prevent slack, ensuring the tape adheres securely and maintains the bundle's rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a stapler is used to bind the sheet bundle, then the binding process is simple and efficient, but the tip end portion of the sheet bundle buckles when rigidity is low
Solution Approach 1:
The sheet support unit performs preliminary actions by shifting multiple sheets in the edge portion and pressing the pressing region to eliminate slack before the tape attachment unit applies the binding element. This pre-positioning and pre-tensioning of the sheets prevents buckling during the actual binding operation, ensuring both efficiency and quality.
Solution Approach 2:
The invention changes the physical state and position parameters of the sheets by introducing controlled shifts in the edge portion and applying pressure to eliminate slack. These parameter changes (position displacement and force application) increase the rigidity of the sheet bundle at critical regions, preventing buckling while maintaining binding efficiency.
2Strength
If multiple sheets are shifted in the edge portion, then rigidity of the sheet bundle increases, but the structure becomes more complex
Solution Approach 1:
The sheet support unit performs multiple functions: it shifts multiple sheets in the edge portion, presses the pressing region to eliminate slack, and maintains the sheet bundle in a stable position. By consolidating these functions into a single unit, the invention increases rigidity without proportionally increasing overall device complexity.
3Manufacturing precision
If the tip end portion is pressed to prevent buckling, then binding quality improves, but the pressing force may affect tape attachment
Solution Approach 1:
The sheet support unit applies pressing force to a specific pressing region that is distinct from the tape attachment region. This localized pressing eliminates slack and prevents buckling in the edge portion without interfering with the tape attachment process, thereby maintaining both binding quality and tape attachment reliability.
Data Source
AI summary
A sheet binding method according to an embodiment includes holding a sheet bundle in a state where multiple sheets forming the sheet bundle are shifted relative to each other at an edge portion of the sheet bundle. A pressing region of the edge portion is pressed, in a sheet bundle thickness direction, so that there is substantially no slack along the edge portion. While the sheet bundle is pressed, tape is applied to an edge portion of a sheet bundle at a tape attachment region of the edge portion different from the pressing region.