Sheet Inverting Device Movable Stop Member Folded Sheet Alignment
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Solution Overview
Problem
Conventional sheet inverting devices often cause folded sheets to unfold when the small panel is fed as the top panel, leading to misalignment and unfolding during inversion, especially when the folded edge is trailing.
Innovation Solution
A sheet inverting device with a receiving member and a movable stop member that limits the unfolding movement of the small panel, allowing it to retract and enable the sheet to roll onto the receiving member without separating from the large panel, ensuring the sheet remains folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the small panel is fed as the top panel to the sheet inverter disk, then the sheet can be inverted with the folded edge as the trailing edge, but the folded sheet unfolds during inversion because the small panel separates from the large panel
Solution Approach 1:
A guide member is introduced as an intermediary element between the sheet inverter disk and the receiving member. This guide member actively guides the inner edge of the folded sheet along its contour during inversion, preventing separation between the small and large panels. The guide member mediates the interaction between the inverting element and the sheet, ensuring the sheet maintains its folded state throughout the inversion process.
2Productivity
If the sheet is inverted using a conventional sheet inverter disk, then the inversion process is simple and fast, but the small panel may tangentially protrude from the large panel causing unfolding
Solution Approach 1:
The guide member serves as a mediator that maintains precise alignment between the small and large panels during the high-speed inversion process. By providing a physical contour that the inner edge must follow, the guide member ensures manufacturing precision (alignment) is maintained without sacrificing the fast inversion speed characteristic of conventional systems.
Solution Approach 2:
The guide member extends in a vertical dimension above the receiving member, creating a three-dimensional path that constrains the inner edge movement. This dimensional addition allows the system to maintain precision control over panel alignment while preserving the rapid two-dimensional inversion motion of the sheet inverter disk.
Data Source
AI summary
A sheet inverting device and a method of inverting a folded sheet include an inverting element that inverts the sheet around an axis of rotation towards a receiving member for receiving the sheet, and at least one moveable stop member that limits, in a first position of the stop member above the receiving member, an unfolding movement of the sheet in a direction towards a far side of the receiving member. The stop member is adapted to be retracted from the first position into a second position of the stop member.