Rotating Member Binding Mechanism for Adjustable Sheet Bundle Force
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Solution Overview
Problem
Existing sheet binding technologies face challenges in adjusting binding force and area without using metal needles, leading to inefficiencies in recycling and productivity, as they require multiple cutters and complex configurations.
Innovation Solution
A sheet processing apparatus with rotating members having concave and convex portions that can be adjusted to form asperities on a sheet bundle, allowing for customizable binding areas and forces without the need for metal needles, using a controlling mechanism to mesh the rotating members and guide members for optimal binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of cutters with different shapes and binding areas are prepared to adjust binding force, then binding force can be adjusted, but it takes time to change the cutter and productivity decreases
Solution Approach 1:
The patent applies the dynamics principle by making the cutter shape changeable during operation. The blade can be moved between multiple positions (first, second, third positions) to change the effective cutting edge and binding area dynamically, eliminating the need to stop and change cutters. This allows binding force adjustment while maintaining continuous operation and high productivity.
2Object-generated harmful factors
If a sheet binding apparatus without metal needle is used to reduce waste and improve recycling, then environmental protection is improved, but binding force cannot be adjusted because binding area cannot be changed
Solution Approach 1:
The patent makes the binding area changeable by moving the blade between different positions. The effective cutting edge can be adjusted to create different binding areas, enabling binding force adjustment without using metal needles. This resolves the contradiction by providing both environmental benefits and adjustable binding force.
Solution Approach 2:
The blade is designed with multiple segments or positions (first, second, third positions) that can be selectively engaged. Each position provides a different effective cutting edge length, allowing the binding area to be segmented and adjusted according to the sheet bundle thickness and binding requirements.
3Strength
If binding area is increased to strengthen binding of sheet bundle without metal needle, then binding strength is improved, but device complexity increases due to need for multiple cutters
Solution Approach 1:
The patent applies universality by designing a single blade that can perform multiple functions by changing its position. The same blade can create different binding areas and binding strengths by being positioned at different locations, eliminating the need for multiple specialized cutters. This reduces device complexity while maintaining the ability to achieve strong binding when needed.
Data Source
AI summary
A sheet processing apparatus that forms asperity on a sheet bundle so as to bind the sheet bundle, has a pair of rotating members having a concave and convex portions on the outer periphery, a moving portion that moves at least one of the pair of the rotating members so as to nip the sheet bundle by the pair of the rotating members or release the sheet bundle, and a controlling portion that controls the moving portion to allow the pair of rotating members to rotate with a concave portion of one rotating member and a convex portion of the other meshed with each other while nipping the sheet bundle or releasing the sheet bundle.