Sheet Separation Device Using Controlled Roller Nipping
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Solution Overview
Problem
Existing sheet separation devices struggle to accurately separate non-bonding portions of two-ply sheets where two sheets are overlapped and bonded together, often resulting in misalignment and damage during the separation process, which complicates the insertion of an inner sheet between the separated sheets.
Innovation Solution
A sheet separation device equipped with a conveyance roller pair and circuitry that controls sheet conveyance, allowing for precise separation of the non-bonding portion by nipping the two-ply sheet and rotating the conveyance rollers to insert an inner sheet between the separated sheets, ensuring accurate alignment and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing sheet separation devices are used to separate non-bonding portions of two-ply sheets, then separation is achieved, but misalignment and damage occur during the separation process
Solution Approach 1:
The conveyance roller pair is stopped before the leading end of the two-ply sheet contacts the nip region, ensuring precise positioning. The circuitry controls the timing to stop the rollers, allowing the sheet leading end to contact the nip region accurately, then starts rotation to nip the sheet. This preliminary positioning action prevents misalignment and damage during separation.
2Productivity
If existing sheet separation devices separate two-ply sheets, then the non-bonding portion is divided, but the sheets become misaligned making inner sheet insertion difficult
Solution Approach 1:
The circuitry provides precise control feedback by monitoring the position of the two-ply sheet and controlling the conveyance roller pair accordingly. The system stops the rollers when the leading end contacts the nip region, then starts rotation to nip and convey the sheet with an inner sheet. This feedback control ensures both efficient separation and accurate alignment for inner sheet insertion.
3Productivity
If the conveyance roller pair continuously rotates to convey sheets, then productivity is maintained, but precise positioning for separation is lost
Solution Approach 1:
The conveyance roller pair dynamically changes its state from stopped to rotating based on the separation process requirements. The circuitry controls the rollers to stop before the leading end contacts the nip region, then start rotation to nip the sheet. This dynamic adjustment allows precise positioning when needed while maintaining productivity through controlled conveyance.
Data Source
AI summary
A sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet separation device includes a conveyance roller pair and circuitry. The conveyance roller pair is configured to convey the two-ply sheet while nipping the two-ply sheet, when separating the non-bonding portion of the two-ply sheet. The circuitry is configured to control sheet conveyance. The circuitry is configured to stop the conveyance roller pair, cause a leading end of the two-ply sheet conveyed toward the conveyance roller pair to contact a nip region of the conveyance roller pair while the conveyance roller pair is stopped, and start the conveyance roller pair to rotate to nip the two-ply sheet.