Spliced Paper Pressing Plate for Stapled Document Shredding
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Solution Overview
Problem
Existing automatic paper shredders with integrated paper pressing plates face inefficiencies when dealing with papers containing staples or clips, resulting in poor pressing and shredding performance due to small contact surfaces and large gaps.
Innovation Solution
An automatic paper shredder with a spliced paper pressing plate, featuring asymmetrical and nonuniform parts, elastic connections, and additional components like auxiliary blocks, damping plates, and convex ribs, which enhance friction and guiding forces to improve paper pressing and shredding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an integrated paper pressing plate is used, then the structure is simple, but the contact surface with paper is small and gaps are large when staples or clips are present, resulting in poor pressing effect
Solution Approach 1:
The paper pressing plate is divided into multiple independent pressing pieces (first pressing piece, second pressing piece, third pressing piece) instead of using a single integrated plate. Each pressing piece can independently contact the paper stack, ensuring full coverage even when staples or clips are present. This segmentation allows the pressing surface to adapt to irregular paper stacks while maintaining structural simplicity through modular design.
2Device complexity
If an integrated paper pressing plate is used, then the device complexity is low, but the paper shredding efficiency decreases due to poor pressing effect
Solution Approach 1:
The pressing plate is segmented into multiple independent pressing pieces that can be separately positioned and adjusted. This segmentation enables each piece to make optimal contact with different portions of the paper stack, ensuring uniform pressing across the entire stack. The improved pressing effect directly enhances paper shredding efficiency by ensuring consistent paper feed to the cutting blades.
Solution Approach 2:
Each pressing piece is designed with specific local characteristics (different shapes, sizes, and positions) to optimize contact with specific regions of the paper stack. The first pressing piece contacts the front portion, the second pressing piece contacts the middle portion, and the third pressing piece contacts the rear portion, ensuring localized optimal pressing at each region to maximize overall shredding efficiency.
3Reliability
If a spliced paper pressing plate with multiple pressing pieces is used, then the pressing effect improves, but the device complexity increases
Solution Approach 1:
The pressing plate is divided into multiple independent pressing pieces that are modular in design. Each pressing piece can be independently manufactured, assembled, and replaced. This modular segmentation improves pressing effect while controlling complexity through standardized interfaces and simple assembly mechanisms that require minimal additional components.
Solution Approach 2:
The multiple pressing pieces serve universal functions of pressing different portions of the paper stack, eliminating the need for complex adjustable mechanisms. Each pressing piece is designed to perform the same basic pressing function but at different locations, providing multi-functionality through simple replication rather than complex customization.
4Ease of operation
If the paper holding plate is obliquely disposed, then users can place paper conveniently and friction is reduced, but the structural complexity increases
Solution Approach 1:
The paper holding plate is designed with an asymmetric inclined structure rather than a symmetric horizontal or vertical configuration. The inclined plane allows paper to be placed conveniently by gravity-assisted sliding while the asymmetric angle optimizes both user accessibility and friction reduction. This asymmetric design achieves operational ease through geometric optimization rather than complex mechanical mechanisms.
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
The spliced paper pressing plate design significantly reduces gaps and increases friction, leading to improved paper pressing and shredding efficiency, even with papers containing staples or clips, while also providing a convenient and reliable shredding experience.
Implementation Method 1
The paper pressing plate is elastically connected to the lower end face of the shredder cover through a plurality of elastic components
Implementation Method 2
the bottom piece of paper in the stack of paper placed on the paper holding plate is driven by the paper pick-up rollers to move towards the inner wall of the paper holding box and then to move reversely under a counter-acting force of the inner wall
Data Source
AI summary
An automatic paper shredder includes a shredder cover, a paper holding box, a shell, a paper holding plate, a paper holding plate inlet, a paper shredding component, a drive motor, a paper pressing plate, a paper pick-up component, and a waste paper bin. The paper pressing effect is improved through a spliced paper pressing plate, and the paper pick-up effect is improved through a damping plate, a soft rubber piece, and a convex rib, and thus, efficiency is improved. The automatic paper shredder has the characteristics of being highly automated, convenient to use, safe, reliable, structurally simple and cost-effective.