Sheet Bundle Discharging Apparatus Friction Control
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Solution Overview
Problem
Existing sheet bundle discharging systems require stopping the bookbinding operation to remove accumulated bundles, disrupting continuous production and reducing productivity, and face challenges in stable discharge to prevent production stoppages due to abnormalities.
Innovation Solution
A sheet bundle discharging apparatus with a conveyance unit, guide unit, receiving unit, and discharging unit, where the receiving unit is rotatable between positions, utilizing surfaces with different friction coefficients to stabilize and discharge the sheet bundle, ensuring continuous operation and preventing production interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the accommodating section accumulates sheet bundles to improve productivity, then the continuous bookbinding operation can be maintained, but the user must stop the operation to remove bundles periodically, causing production interruptions
Solution Approach 1:
The sheet bundle discharging apparatus automatically discharges completed sheet bundles from the accommodating section without requiring user intervention. The discharging unit detects accumulated bundles and autonomously removes them, allowing the bookbinding operation to continue uninterrupted while maintaining the accommodating section's storage capacity.
2Speed
If the receiving unit rotates quickly to improve discharge speed, then productivity increases, but the sheet bundle may slip or become unstable during rotation
Solution Approach 1:
The receiving unit features surfaces with different friction coefficients at different locations. The first surface has high friction to grip the spine during initial reception, while the second surface has lower friction to allow controlled sliding during rotation. This spatial variation in friction properties enables stable discharge even at higher rotation speeds.
Solution Approach 2:
The system dynamically adjusts the friction coefficient parameter across different surfaces of the receiving unit. By varying the friction coefficient from high (first surface) to low (second surface), the system optimizes the balance between gripping stability and rotational discharge speed, preventing slippage while maintaining reliable discharge.
3Reliability
If the friction coefficient between the third surface and sheet bundle is increased to prevent slippage, then discharge stability improves, but the sheet bundle cannot be properly regulated during rotation
Solution Approach 1:
The receiving unit employs three surfaces with progressively different friction coefficients. The third surface has a friction coefficient higher than the first surface, providing enhanced grip for stable discharge. This localized high-friction zone ensures the sheet bundle remains securely regulated during rotation without requiring excessive friction across all surfaces.
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
Enables stable and continuous discharge of sheet bundles, maintaining productivity by allowing uninterrupted bookbinding operations and preventing production stoppages due to abnormalities.
Implementation Method 1
a friction coefficient between the sheet bundle and the third surface in a direction away from the first surface is larger than a friction coefficient between the first surface and the sheet bundle
Implementation Method 2
the second surface being configured to push the sheet bundle in a rotation direction of the receiving unit while the receiving unit rotates from the first position to the second position
Data Source
AI summary
A sheet bundle discharging apparatus, including: a guide unit configured to guide a sheet bundle with a spine as a leading end; a receiving unit configured to receive the spine of the sheet bundle guided by the guide unit; and a discharging unit configured to discharge the sheet bundle, wherein the receiving unit includes: a first surface configured to receive the spine at a first position; a second surface configured to push the sheet bundle in a rotation direction of the receiving unit; and a third surface configured to regulate a movement of the sheet bundle in the rotation direction while the receiving unit rotates from the first position to a second position, and wherein a friction coefficient between the sheet bundle and the third surface in a direction away from the first surface is larger than a friction coefficient between the first surface and the sheet bundle.