Forwardly Angled Scrap Strippers for Rotary Cutting Dies
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Solution Overview
Problem
Traditional rearwardly angled finger-type scrap strippers in rotary cutting dies are ineffective at high operating speeds, failing to efficiently remove scrap material from the cutting die, which can render the die inoperable and integrate scrap with the product.
Innovation Solution
The implementation of forwardly angled finger-type scrap strippers made of resilient and compressible materials, oriented in the direction of rotation, to effectively strip and direct scrap away from the cutting die, ensuring efficient operation at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional rearwardly angled finger-type scrap strippers are used, then the structure is simple and easy to manufacture, but they fail to efficiently remove scrap material at high operating speeds
Solution Approach 1:
The patent inverts the traditional rearwardly angled finger orientation by using forwardly angled fingers that slant in the direction of rotation. This inversion allows the fingers to effectively engage and strip scrap material at high operating speeds, resolving the contradiction between maintaining simple structure and achieving reliable scrap removal at high productivity levels
2Reliability
If forwardly angled finger-type scrap strippers are implemented, then scrap removal efficiency at high speeds is improved, but the device complexity increases
Solution Approach 1:
The patent changes the orientation parameter of the fingers from rearwardly angled to forwardly angled relative to the direction of rotation. This parameter change optimizes the fingers' ability to strip scrap at high speeds while maintaining the basic structural simplicity of the finger-type stripper design, thus improving reliability without excessive complexity increase
3Productivity
If high operating speeds are achieved, then productivity increases, but scrap material accumulates around the cutting blade rendering the die inoperable
Solution Approach 1:
The forwardly angled fingers are positioned and oriented to preliminarily engage scrap material as it is cut, preventing its accumulation around the cutting blade before it can cause operational problems. This preliminary action enables the system to maintain high productivity without the harmful effect of scrap buildup that would render the die inoperable
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 forwardly angled scrap strippers enhance the ability to remove scrap material efficiently at high speeds, preventing die malfunction and ensuring clean separation of scrap from the product, thereby improving the operational efficiency of rotary cutting dies.
Implementation Method 1
These resilient and compressible fingers are attached to the die board of the rotary cutting die and project therefrom
Data Source
AI summary
An apparatus configured to cooperate with a rotating anvil to cut corrugated board comprises a rotary cutting die configured to rotate in one direction and to cooperate with the anvil to cut corrugated board. The cutting die includes a base and at least one scrap cutting blade and a scrap stripper that comprises one or more fingers that project from the base at an incline and which is slanted forwardly in the direction of rotation of the cutting die for stripping cut scrap pieces of corrugated board from the blade.