Rotating Paddle Chip Removal for Sheet Bundle Cutting Blades
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Solution Overview
Problem
Existing cutting devices for sheet bundles face operational failures and conveyance issues due to small chips adhering to the cutting blade, which are not effectively removed by existing methods, leading to apparatus malfunction and stopped operations.
Innovation Solution
A cutting device equipped with a rotating paddle and a controller that adjusts the paddle's direction based on chip size, ensuring small chips are removed by rubbing the blade surface and large chips are pulled away to prevent accumulation and entry into the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotating paddle is used to remove chips from the cutting blade, then large chips can be removed, but small chips still adhere to the blade surface and cause operational failures
Solution Approach 1:
The chip removal function is divided into two distinct mechanisms: a rotating paddle for removing large chips and a scraper for removing small chips. This segmentation allows each component to specialize in removing chips of specific sizes, thereby completely eliminating chip accumulation on the cutting blade and preventing operational failures.
Solution Approach 2:
A scraper is introduced as an intermediary component between the cutting blade and the chip removal system. The scraper specifically targets and removes small chips that adhere to the blade surface, acting as a mediator to prevent these small chips from causing operational failures while working in conjunction with the rotating paddle.
2Productivity
If chips are not effectively removed from the cutting blade, then the cutting device can operate continuously, but chips enter the apparatus and cause operational failures or suspensions
Solution Approach 1:
The harmful small chips are extracted from the cutting blade surface through the scraper mechanism. By continuously removing these small chips before they can fall into the apparatus, the system maintains continuous cutting operation while preventing chip entry into the apparatus that would cause operational failures.
Solution Approach 2:
The controller monitors the cutting operation and activates the scraper in response to detected chip accumulation on the cutting blade. This feedback mechanism ensures that small chips are removed timely to prevent them from entering the apparatus, thereby maintaining both continuous productivity and preventing operational failures.
3Device complexity
If existing chip removal methods are used, then the structure remains simple, but small chips accumulate and cause apparatus malfunction
Solution Approach 1:
The chip removal mechanism is segmented into multiple functional components (rotating paddle and scraper) that work together. While this increases structural complexity, it enables complete chip removal capability including small chips, thereby ensuring apparatus operation continuity and preventing malfunctions.
Solution Approach 2:
The chip removal system is designed with multi-functionality to handle chips of all sizes. The rotating paddle handles large chips while the scraper handles small chips, making the system universal in its chip removal capability. This comprehensive approach prevents any type of chip from causing apparatus malfunction, ensuring reliable continuous operation.
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
This solution prevents chip accumulation on the cutting blade, ensuring stable operation and continuous processing without stopping the cutting device or image forming apparatus, maintaining efficient image forming and finishing operations.
Implementation Method 1
a rotating paddle, arranged on the side of the cutting blade, for removing the chips depositing on the cutting blade by rubbing the side surface of the cutting blade
Implementation Method 2
the controller controls the drive of the paddle in such a way that when the judging section has judged that the length of the chips is smaller than the preset length, the paddle is rotated in a predetermined direction; and when the judging section has judged that the length of the chips is greater than the preset length, the paddle is rotated in the direction opposite the predetermined direction
Data Source
AI summary
A cutting device that cuts an edge portion of a sheet bundle having plural sheets stacked, includes: a cutting blade; a paddle provided on a side of the cutting blade, which removes chips attached to the cutting blade by rubbing a side surface of the cutting blade; a controller which controls drive of the paddle. The controller includes a judging section which compares a length of the chips in a direction perpendicular to an edge side of the sheet bundle to be cut by the cutting blade with a predetermined length that has been preset. When the length of the chips is shorter than the predetermined length, the controller makes the paddle to rotate in a predetermined direction, and when the length of the chips is longer than the predetermined length, the controller makes the paddle to rotate in a reverse direction.