Sheet Processing Apparatus Conveyance Path Member Design
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Solution Overview
Problem
Existing sheet processing apparatuses face issues with preventing cut roll sheets from falling over and being cut twice due to their own weight, leading to inefficiencies and potential jams during the discharge process.
Innovation Solution
A sheet processing apparatus with a conveyance path member and a supporting member that guide the cut roll sheet, ensuring it passes between specific edge portions to prevent falling and re-cutting, utilizing a conveyance path member with first and second top edge portions and a supporting member with a bottom edge portion to stabilize the sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cut roll sheet is discharged without additional support structures, then the discharge process is simple, but the sheet may fall over due to its own weight and be cut twice
Solution Approach 1:
A conveyance path member is introduced as an intermediary structure between the cutting device and the discharge destination. This member includes a conveyance path that guides the sheet and a supporting surface that prevents the sheet from falling over due to gravity, thereby avoiding double cutting without requiring complex additional support structures
Solution Approach 2:
The conveyance path member extends in the sheet conveyance direction (longitudinal dimension) and provides support at multiple positions along this dimension. By distributing support along the conveyance path rather than at a single point, the structure prevents sheet collapse while maintaining simplicity
2Stability of the object's composition
If the conveyance path member supports the sheet at multiple positions, then the sheet stability is improved, but the device structure becomes more complex
Solution Approach 1:
The support function is segmented into multiple support positions (first support position and second support position) along the conveyance path. Each position provides localized support to prevent sheet collapse, while the segmentation allows the conveyance path member to maintain a simple overall structure rather than requiring a complex continuous support system
Solution Approach 2:
The conveyance path member performs multiple functions: it guides the sheet through the discharge process, provides support at multiple positions to prevent collapse, and maintains structural simplicity. This multi-functionality achieves high sheet stability without increasing device complexity
Data Source
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AI summary
There is provided a sheet processing apparatus 1 capable of preventing the roll sheet 3A cut by the cutter unit 8 from falling over to the sheet processing apparatus 1 and improving the conveyance capability of the roll sheet 3A when the long size roll sheet 3A is made. Long size roll sheet 3A is fixed at three spots, wherein the three spots are the top edge portion 64A of the roll sheet receiving portion 64, the top edge portion 62D on the downstream side of the regulatory member 62, and the bottom edge portion 61A of the projecting portion 61. The bottom edge portion 61A of the projecting portion 61 is constructed to be always located inside a circular arc which starts from a center O with a maximum radius R of the roll sheet 3A, wherein the circular arc passes the top edge portion 64A of the roll sheet receiving portion 64 and the top edge portion 62D on the downstream side of the regulatory member 62.