Blower System for Gripping Margin Ejection in Paper Punching
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Solution Overview
Problem
Existing sheet punching and embossing machines require costly retrofitting and reduced machine speed to efficiently eject gripping margins of varying sizes, especially when they match the size of the sheet, leading to inefficiencies and increased costs.
Innovation Solution
The implementation of a blower system that creates a directed air current across the ejection station, utilizing a blower strip secured across the machine's width and a conveyor belt, allows for reliable ejection of gripping margins without the need for retrofitting, ensuring maximum machine performance and low costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grip opening cam is adjusted to eject gripping margins equal to the size of the sheet, then the gripping margin can be eliminated from the machine, but retrofitting costs increase and machine speed must be reduced
Solution Approach 1:
The patent employs a blower to generate a directed air current that acts on the gripping margin at the ejection station. This pneumatic approach replaces or supplements mechanical ejection methods, enabling reliable removal of gripping margins of any size without requiring mechanical retrofitting or speed reduction. The air current provides a flexible, contactless ejection mechanism that adapts to different gripping margin dimensions.
2Reliability
If retrofitting is performed to handle full-size sheet gripping margins, then ejection capability is improved, but device complexity and cost increase
Solution Approach 1:
The blower system provides a simple pneumatic solution that avoids complex mechanical retrofitting. Instead of installing additional grip opening cams or modifying existing mechanical ejection mechanisms, the patent introduces a blower that generates an air current to assist ejection. This pneumatic approach maintains simple machine structure while achieving reliable ejection of gripping margins of any size.
3Reliability
If machine speed is reduced to eject gripping margins, then ejection reliability is improved, but productivity decreases
Solution Approach 1:
The blower enables reliable ejection of gripping margins without requiring speed reduction. The directed air current acts on the gripping margin to facilitate its removal from the gripper, allowing the machine to maintain high operating speeds while ensuring complete ejection. This pneumatic assistance decouples ejection reliability from machine speed constraints.
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 enables efficient and cost-effective ejection of gripping margins of all sizes, maintaining high machine performance and eliminating the need for adjustments in grip opening cams, thereby reducing operational costs and increasing machine speed by up to 20%.
Implementation Method 1
a blower blows air towards an ejection station so that a directed current of air acts on the gripping margin
Data Source
AI summary
A sheet punching and embossing machine includes revolving gripper cars with which a gripping margin of a sheet is grasped by grippers disposed on the gripper car so as to move the sheet through the machine, a punching station in which the gripping margin can be separated from the sheet, a delivery station in which the gripping margin can be further separated from the sheet, and an ejection station in which the gripping margin can be ejected from the gripper. The ejection station includes a blower which directs a current of air at the gripping margin.