Converting Machine Sheet Pile Storage With Adjustable Sampling Plate
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Solution Overview
Problem
Converting machines require redundant security systems for safe operator access to collect sample sheets, leading to restricted space and extended downtime.
Innovation Solution
A device with a transfer mechanism and an adjustable sampling plate that allows sample sheets to be collected without stopping the machine, using guide rails and joggers to align sheets and enable safe access during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant security systems are implemented for operator access to collect sample sheets, then operator safety is improved, but available space for the operator is restricted and downtime is extended
Solution Approach 1:
A safety barrier is introduced as an intermediary element between the operator and the machine's piling area. This barrier can be raised or lowered to control access, allowing the operator to collect sample sheets safely without requiring complete machine shutdown. The barrier mediates the interaction between the operator and moving parts, maintaining safety while enabling operational continuity.
Solution Approach 2:
The safety barrier is designed to be dynamically adjustable between raised (blocking access) and lowered (allowing access) positions. This dynamic configuration allows the system to adapt between safety mode and operational mode, enabling the operator to access the piling area during machine operation when the barrier is lowered, thus reducing downtime while maintaining safety when raised.
2Reliability
If redundant security systems are implemented for operator access, then operator safety is improved, but the space available for the operator is restricted
Solution Approach 1:
The safety barrier acts as a controllable intermediary that defines the operator's working space dynamically. When lowered, it allows the operator to access the piling area with sufficient space; when raised, it creates a protective boundary. This resolves the contradiction by making the space restriction conditional rather than permanent, maintaining both safety and adequate working space as needed.
3Reliability
If the machine stops for extended periods to allow operator access, then operator safety is improved, but productivity is reduced
Solution Approach 1:
The system enables continuous operation of the converting machine while allowing intermittent operator access for sample collection. The safety barrier allows the machine to remain in operation (continuous useful action) while the operator can safely collect samples, eliminating the need to stop production entirely and thus maintaining productivity while ensuring safety.
Solution Approach 2:
The safety barrier mediates between the need for continuous production and operator safety during sample collection. It allows the machine to continue running while providing a controllable safety boundary, enabling productivity maintenance without compromising operator safety.
Data Source
AI summary
A device for storing a sheet pile in a converting machine (10) comprises a transfer mechanism (28) for delivering sheets (22) into a piling area (26) of the device (22), and a sampling plate (44) which is adjustable between a sampling position and an access position, wherein the top of the piling area (26) is covered by the sampling plate (44) when the sampling plate (44) is in the sampling position and the top of the piling area (26) is free when the sampling plate (44) is in the access position.