Sheet Bundle Folding for Precise Stapleless Binding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sheet processing devices require staples for binding, which can be cumbersome and may not be suitable for certain materials, and existing stapleless binding technologies lack efficiency and precision in folding and binding near a fold line.
Innovation Solution
A sheet processing apparatus with a folding device that folds sheets in half and a stapleless binding device that binds near the fold line using a pressure-binding unit with tooth trains to secure the sheet bundle without staples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If staples are used for binding sheet bundles, then binding strength is improved, but device complexity and ease of operation deteriorate due to staple loading and disposal requirements
Solution Approach 1:
The invention extracts and eliminates the staple component from the binding system, replacing it with a stapleless binding mechanism that uses friction and pressure between the folded edge and binding rollers to secure sheets, thereby removing the complexity associated with staple loading, handling, and disposal
Solution Approach 2:
The invention replaces the mechanical staple-driven binding system with a friction-based pressure binding system, where binding rollers apply controlled pressure to the folded edge of sheets, creating sufficient friction to hold the bundle together without requiring penetrating fasteners
2Measurement precision
If binding is performed near the fold line, then binding precision is improved, but manufacturing precision deteriorates due to difficulty in controlling binding position accuracy
Solution Approach 1:
The invention performs the folding action before the binding action, creating a predetermined fold line that serves as a reference for subsequent binding. The folding device creates a consistent folded edge that positions the sheets accurately, making the subsequent binding operation simpler and more precise
Solution Approach 2:
The invention introduces the fold line as an intermediary element between the sheets and the binding mechanism. The folded edge acts as a mediator that provides a consistent reference surface for the binding rollers, enabling precise binding positioning without requiring complex alignment systems
3Ease of operation
If stapleless binding is used, then ease of operation is improved, but binding strength deteriorates compared to staple-based binding
Solution Approach 1:
The invention changes the binding mechanism from penetration-based (staples) to friction-based (pressure), and optimizes parameters such as pressure magnitude, contact area, and folding geometry to achieve sufficient binding strength through controlled friction and normal force at the folded edge
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and staple-free binding of sheet bundles, ensuring secure and precise folding and binding near the fold line, enhancing the versatility and efficiency of sheet processing.
Implementation Method 1
a stapleless binding device including a binding unit that binds the sheet bundle at a position of a portion near a fold line without using a staple
Data Source
AI summary
A sheet processing apparatus includes: a folding device that folds a sheet bundle which is formed of multiple sheets stacked on each other; and a stapleless binding device including a binding unit that binds the sheet bundle at a position of a portion near a fold line without using a staple, the fold line being formed as a result of the folding device folding the sheet bundle.