Paper Sheet Conveying Apparatus Jam Removal
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Solution Overview
Problem
Existing paper sheet conveying systems face difficulties in efficiently removing a jammed paper sheet, especially when it is long, as manual conveyance is time-consuming and challenging, and cutting the sheet can render non-jammed parts unusable.
Innovation Solution
A paper sheet conveying apparatus with a first and second storage unit, conveyance paths, a switching unit, and a cutting unit that detects jams and cuts the paper sheet to a predetermined length before switching the conveyance path to store the cut sheet in a second storage unit, allowing for easy removal of the jammed portion and reuse of non-jammed parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual conveyance is used to remove a jammed paper sheet, then the paper sheet can be removed, but the time required for removal work increases significantly
Solution Approach 1:
The paper sheet is segmented into multiple sections using cutting units. When a jam is detected, the paper sheet is cut at predetermined positions to create manageable segments that can be easily removed, eliminating the need for manual conveyance of the entire sheet.
Solution Approach 2:
Cutting units are positioned at predetermined locations along the conveyance path before the jam occurs. When a jam is detected, these pre-positioned cutting units immediately cut the paper sheet, performing the segmentation action in advance of the removal operation.
2Productivity
If the paper sheet is cut to remove the jammed portion, then the jammed part can be removed, but the non-jammed parts also become unusable and must be discarded
Solution Approach 1:
Only the jammed portion of the paper sheet is extracted and removed through selective cutting. The cutting units are positioned to cut only at the jam location and immediate surroundings, while the non-jammed portions remain intact and can be reused for subsequent printing operations.
Solution Approach 2:
The cutting action is applied locally only at the jammed section rather than uniformly across the entire paper sheet. The cutting units are strategically positioned to affect only the problematic area, preserving the quality and usability of the remaining paper portions.
3Adaptability or versatility
If a long paper sheet extends over multiple apparatuses, then the paper sheet can be conveyed through the system, but it becomes difficult to remove when a jam occurs
Solution Approach 1:
The long paper sheet is divided into multiple manageable segments by positioning cutting units at predetermined intervals along the conveyance path. This segmentation allows the sheet to be conveyed through multiple apparatuses while enabling easy isolation and removal of any jammed segment without affecting the entire sheet.
Data Source
AI summary
A paper sheet conveying apparatus includes: a first storage unit; a second storage unit; a first conveyance path to the first storage unit; a second conveyance path to the second storage unit; a conveyance unit configured to convey a paper sheet; a switching unit configured to switch a conveyance path of a paper sheet; a cutting unit configured to cut a paper sheet at a cutting position; a detecting unit configured to detect a jam; and a control unit, when a jam is detected on the first conveyance path, configured to cut a part of the paper sheet, the part is positioned on a side upstream from the cutting position, to a predetermined length, switch a conveyance path of the paper sheet from the first conveyance path to the second conveyance path, and store the cut paper sheet in the second storage unit through the second conveyance path.