Separable Conveyance Rollers for Two-Ply Sheet Insertion
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Solution Overview
Problem
Existing sheet processing apparatuses face challenges in efficiently separating two-ply sheets with a large interval between branching guide plates, leading to potential conveyance failures and difficulties in inserting an inner sheet between the separated sheets.
Innovation Solution
A sheet processing apparatus with a conveyance passage featuring a first and second branched conveyance passage in different directions, a sheet separation device, and a conveyance roller pair with separable rollers, allowing for effective separation and insertion of an inner sheet between the two sheets of a two-ply sheet, while minimizing the risk of conveyance failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large interval is set between branching guide plates to prevent conveyance failure, then reliability is improved, but the ability to insert an inner sheet between separated sheets deteriorates
Solution Approach 1:
The conveyance roller pair is designed with separable rollers that can move between contact and separation states. During normal conveyance, rollers contact to ensure reliable sheet transport. When sheet separation is needed, rollers separate to allow inner sheet insertion, thus dynamically adapting to different operational requirements and resolving the contradiction between conveyance reliability and inner sheet insertion capability
Solution Approach 2:
The conveyance roller pair is segmented into two independent rollers that can operate separately. This segmentation allows one roller to remain in contact for reliable conveyance while the other separates to enable inner sheet insertion, effectively resolving the contradiction between maintaining conveyance reliability and enabling inner sheet insertion
2Ease of operation
If two-ply sheets are separated at the non-bonding portion, then inner sheet insertion is enabled, but conveyance failure risk increases due to sheet catching in branched passages
Solution Approach 1:
The conveyance roller pair dynamically adjusts its state based on operational needs. Rollers contact during conveyance to prevent sheet catching and ensure reliable transport. Rollers separate during insertion operations to enable inner sheet placement, thus dynamically resolving the contradiction between enabling inner sheet insertion and preventing conveyance failure
Solution Approach 2:
The separable conveyance roller pair acts as an intermediary mechanism between the sheet separation device and the branched conveyance passages. It mediates the transition from bonded to separated state, ensuring sheets are properly guided into branched passages without catching, thus resolving the contradiction between inner sheet insertion capability and conveyance reliability
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 apparatus ensures reliable separation and insertion of the inner sheet between the two-ply sheets, reducing the likelihood of conveyance failures and enhancing the sheet processing efficiency.
Implementation Method 1
The conveyance roller pair has two rollers that are separable from and contactable with each other, and are disposed on at least one of the first branched conveyance passage or the second branched conveyance passage
Data Source
AI summary
A sheet processing apparatus includes a conveyance passage, a sheet separation device, and a conveyance roller pair. The conveyance passage conveys a two-ply sheet having two sheets overlapped and bonded together in a conveyance direction and includes a first branched conveyance passage branched in a first direction, and a second branched conveyance passage branched in a second direction different from the first direction. The sheet separation device separates a non-bonding portion of the two-ply sheet, conveys a first sheet of the two sheets separated from each other to the first branched conveyance passage, and conveys convey a second sheet of the two sheets separated from each other to the second branched conveyance passage. The conveyance roller pair has two rollers that are separable from and contactable with each other, and are disposed on at least one of the first branched conveyance passage or the second branched conveyance passage.