Movable Guard for Sheet Processing Machine Delivery
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Solution Overview
Problem
Existing sheet processing machines, such as punch and printing machines, face challenges in protecting the environment and operators from contamination, odors, and noise due to open rear openings during operation, and lack effective accessibility for servicing and sheet removal.
Innovation Solution
A device with upper and lower guards, where the rear opening is completely closable using a fixed lower cover made of transparent material and a movable upper cover, allowing for telescopic displacement for operator access, and lateral openings are covered by a roller shutter for complete closure during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rear opening is left open for accessibility, then operators can easily access the sheet stack for servicing and removal, but the environment and operators are exposed to contamination, odors, and noise during operation
Solution Approach 1:
The guard system employs movable guards that can dynamically transition between open and closed states. The upper guard is displaceable along guides, and the lower guard can be moved, allowing the system to adapt its configuration based on operational requirements - open for accessibility, closed for protection during operation
Solution Approach 2:
The transparent material used for the guards provides selective transparency - it is transparent to light allowing visual monitoring and accessibility, but opaque to contaminants, odors, and noise, creating different transmission properties for different types of 'substances'
2Object-affected harmful factors
If the rear opening is completely closed to protect from contamination and noise, then operators are protected during operation, but accessibility for servicing and sheet removal is reduced
Solution Approach 1:
The guard system transitions from a static closed state to a dynamic configuration where guards can be moved or removed. The upper guard's displaceability and the lower guard's movability enable easy opening for servicing while maintaining closed protection during operation
Solution Approach 2:
The guard system is divided into separate upper and lower guards that can be independently moved or removed. This segmentation allows selective opening of only the necessary portion for servicing while maintaining protection in other areas
3Illumination intensity
If transparent material is used for the lower cover, then visual monitoring is improved while maintaining protection, but the material selection is limited
Solution Approach 1:
The transparent material is applied specifically to the lower cover where visual monitoring is needed, while the upper guard can use different materials. This local application of transparency allows visual monitoring capability without requiring the entire guard system to be made of transparent material
Data Source
AI summary
On a machine for processing sheets it is provided, in particular in a region of a delivery, to completely close a rear opening on the end side by at least one upper and one lower cover. Lateral openings are also closable by movable guards, which at least partially are formed from a transparent material.