Sheet Feeding Apparatus Multi-Feed Detection Dual Discharge
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Solution Overview
Problem
In sheet feeding apparatuses, frequent halting occurs due to the escape section becoming full, leading to decreased productivity and increased frequency of removing failed sheets, as existing systems require halting when the escape section is full or jammed, and cannot restart unless sheets are manually removed.
Innovation Solution
A sheet feeding apparatus with multi-feed detecting sections and dual discharge sections that select the appropriate escape section based on the position, storage state, size, and weight of multi-fed sheets, allowing for dynamic redirection of sheets to prevent jams and maintain operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single escape section is used to discharge multi-fed sheets, then the structure is simple, but the escape section becomes full frequently causing halts and reduced productivity
Solution Approach 1:
The single escape section is divided into multiple escape sections (first escape section and second escape section). Each escape section can independently discharge multi-fed sheets, preventing any single section from becoming full and causing halts. This segmentation maintains operational continuity while managing sheet discharge efficiently.
Solution Approach 2:
The patent introduces a new dimension of discharge path selection by providing multiple escape sections with different discharge positions. The control section selects which escape section to use based on sheet characteristics and escape section fullness, adding a dimensional aspect to the discharge process that prevents saturation of any single escape section.
2Reliability
If the escape section is full of sheets, then all sheets must be removed before restarting, but this requires frequent halts and manual intervention
Solution Approach 1:
The control section proactively selects appropriate escape sections before they become full by monitoring their fullness status. When one escape section is full, the system switches to another escape section, preventing the need for halts and manual sheet removal. This preliminary action maintains continuous operation.
Solution Approach 2:
The control section continuously monitors the fullness status of escape sections and uses this feedback to dynamically select which escape section to discharge sheets to. This feedback mechanism ensures that the system always uses non-full escape sections, preventing halts and reducing manual intervention.
3Device complexity
If multi-fed sheets are discharged to a fixed escape section, then the control is simple, but the escape section may be unsuitable for certain sheet types or positions
Solution Approach 1:
The system dynamically selects which escape section to use based on real-time conditions such as escape section fullness, sheet size, and sheet weight. This dynamic adaptation allows the system to handle various sheet types appropriately while maintaining simple control logic through automated decision-making.
Solution Approach 2:
The control section changes the discharge destination parameter based on sheet characteristics (size, weight) and escape section status (fullness). This parameter change enables the system to adapt to different sheet types and conditions while maintaining a simple control structure through automated parameter selection.
Data Source
AI summary
A sheet feeding apparatus for feeding sheets is provided with a multi feed detecting section for detecting multi feed of conveyed sheets in a predetermined detection position of a conveyance path, and first and second discharge sections to which multi-fed sheets with the multi feed detected are discharged, and corresponding to one of a front end position of the multi-fed sheets at the time the multi feed detecting section detects the multi feed of sheets, a sheet storage state of the second discharge section, sheet storage states of the first and second discharge sections, a size of sheets and weighing, selects one of the first and second discharge sections to discharge the multi-fed sheets to the selected discharge section.