Folding Pocket Sheet Stop Diverting Mechanism
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Solution Overview
Problem
Existing folding pocket devices for buckle folding machines face inefficiencies due to long travel distances for the sheet stop, leading to limited cycle times and the formation of stop marks, as they require separate configurations for stopping and diverting sheets.
Innovation Solution
A folding pocket device with a sheet stop and diverting means where the sheet stop can displace the diverting means from a clearance to a diverting position using a single drive, allowing for quick switching and short cycle times, with a resilient mechanism for automatic return and optional oblique positioning, enabling a continuous stop surface for stopping and optimized diverting functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet stop is moved from the stop position to the diverting position by a separate drive mechanism, then the sheet can be reliably diverted, but the distance the sheet stop must travel becomes relatively long, thereby limiting the cycle times of the folding machine
Solution Approach 1:
The patent combines the sheet stop and diverting means into a single integrated component. The sheet stop itself is configured to perform both stopping and diverting functions by being movable between different positions, eliminating the need for a separate diverting mechanism and reducing the total travel distance required.
Solution Approach 2:
The sheet stop is designed as a multi-functional element that can serve both as a stopping device and as a diverting device. By making the sheet stop movable between a stop position and a diverting position, it universalizes the function of this single component to address both sheet stopping and sheet diverting requirements.
2Reliability
If the sheet stop includes individual stop elements arranged between the pocket bars to ensure reliable diversion, then the sheet can be diverted effectively, but it becomes impossible to form a continuous stop surface, causing stop marks to be formed at the hitting edge of sheets
Solution Approach 1:
The patent applies dynamics by making the sheet stop movable rather than fixed. The sheet stop can move between a stop position where it provides a continuous surface for stopping, and a diverting position where it blocks the feed-in aperture. This dynamic positioning allows the same component to provide both a continuous stop surface and effective diversion without compromise.
3Speed
If a linear motor is provided for moving the sheet directing means from the clearance position to the diverting position, then the sheet can be diverted quickly, but the device complexity increases
Solution Approach 1:
The sheet stop is designed to be self-servicing by using the sheet itself as the actuating force. When a sheet is fed into the pocket, it automatically pushes the sheet stop from the stop position to the diverting position, and the spring returns it automatically after diversion. This eliminates the need for external motors or complex drive mechanisms while maintaining quick switching 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
This design achieves shorter cycle times and reduced constructional effort by minimizing the distance the sheet stop needs to travel, allowing for efficient switching between stop and diverting positions, while ensuring reliable sheet diversion without stop marks, and enabling continuous stop surfaces for improved performance.
Implementation Method 1
the sheet directing means includes resilient means, preferably a helical return spring, which is configured and arranged such that it is compressed when the sheet stop displaces the diverting means opposite to the running-in direction (ER) to the diverting position, and that it displaces the diverting means back to the clearance position by its spring force
Data Source
AI summary
The folding pocket device for a buckle folding machine includes a folding pocket having a feed-in aperture enabling a sheet to run therethrough in a running-in direction into a pocket space of the folding pocket. A sheet stop device includes a sheet stop extending essentially transversely to the running-in direction in the pocket space, which is displaceable in the running-in direction and in the opposite direction. A sheet directing device includes a diverting device, which is displaceable from a clearance position in which the diverting device opens up the way to the feed-in aperture into the folding pocket to a diverting position in which the diverting device blocks the feed-in aperture in order to divert a sheet. In order to achieve quick switching from the clearance position to the diverting position, the diverting device can be displaced from the clearance position to the diverting position by the sheet stop when the sheet stop is displaced opposite to the running-in direction.