Dual Corrugation Sheet Transport for Curl-Free Stapling
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Solution Overview
Problem
Existing sheet transport systems face challenges in maintaining sheet rigidity, particularly after inkjet printing, leading to issues like curling, paper jams, and positional shifts during stapling operations.
Innovation Solution
A sheet transport device with upper and lower guide members featuring corrugation members and elastic supports that shape the sheet into a corrugated form, enhancing rigidity and preventing curling, while allowing the leading edge to advance smoothly onto the tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single corrugation member is used to enhance sheet rigidity, then the sheet rigidity is improved, but the sheet may curl or cause paper jams due to insufficient control
Solution Approach 1:
The single corrugation member is divided into two separate corrugation members (first and second corrugation members) positioned on opposite sides of the sheet. This segmentation allows independent control of each corrugation member to apply balanced forces that enhance rigidity while preventing curling and paper jams.
Solution Approach 2:
The first and second corrugation members are positioned asymmetrically relative to the sheet thickness, with each member having different protrusion heights from their respective guide members. This asymmetric positioning allows differential control to prevent sheet curling while maintaining rigidity enhancement.
2Strength
If corrugation members protrude significantly to enhance rigidity, then sheet rigidity is improved, but the leading edge cannot advance smoothly onto the tray
Solution Approach 1:
The corrugation members are designed with elastic mounting bases that allow dynamic adjustment of protrusion height. The protrusion height can vary to adapt to different sheet conditions, enabling the leading edge to advance smoothly onto the tray while maintaining sufficient rigidity enhancement for stapling operations.
3Device complexity
If the corrugation member protrusion height is fixed, then the structure is simple, but it cannot adapt to different sheet conditions and delivery requirements
Solution Approach 1:
The corrugation members are mounted on elastic mounting bases that enable the protrusion height to vary dynamically. This dynamic configuration allows the system to adapt to different sheet conditions and delivery requirements without increasing overall structural complexity, as the elasticity provides automatic adjustment capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system maintains sheet rigidity, prevents curling, and ensures smooth delivery without paper jams or positional shifts, enhancing the efficiency of stapling operations.
Implementation Method 1
The first elastic member supports an end portion of the first corrugation member... The second elastic member supports an end portion of the second corrugation member
Data Source
AI summary
A sheet transport device includes a delivery roller and a transport route. The transport route includes an upper guide member and a lower guide member. The lower guide member includes a first guide rib, a first corrugation member, and a first elastic member. The first elastic member supports an end portion of the first corrugation member on a side of the delivery roller, such that the end portion protrudes ahead of the first guide rib toward the upper guide member, with respect to the other end portion. The upper guide member includes a second guide rib, a second corrugation member, and a second elastic member. The second elastic member supports an end portion of the second corrugation member on the side of the delivery roller, such that the end portion protrudes ahead of the second guide rib toward the lower guide member, with respect to the other end portion.