Sheet Guide Endless Belt Speed Adjustment
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Solution Overview
Problem
Existing sheet stackers and conveyors face challenges in efficiently guiding and stacking sheets due to limitations in gripper mechanisms, particularly in maintaining sheet alignment and preventing flapping, especially when the gripper's moving speed exceeds the sheet's ejection speed.
Innovation Solution
A sheet guide system utilizing an endless belt with guide parts supported at multiple places, allowing the belt to rotate and adjust in the circumferential direction, which holds the sheet's downstream end and facilitates stable conveyance and stacking by adjusting its linear velocity relative to the conveyance rollers, ensuring smooth guidance and separation of the sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the gripper's moving speed is made faster than the sheet's ejection speed to separate the sheet, then sheet separation efficiency is improved, but sheet alignment stability deteriorates and flapping occurs
Solution Approach 1:
The guide is divided into multiple guide parts (first guide part, second guide part, third guide part) that are supported at multiple places along the endless belt. This segmentation allows each guide part to independently manage specific aspects of sheet guidance, maintaining alignment stability even when the belt moves at high speed for efficient sheet separation.
Solution Approach 2:
The endless belt is configured to rotate and move the sheet held by the guide, with at least one holding part being displaceable in the circumferential direction. This dynamic configuration allows the guide to adapt to speed variations between the belt and conveyance rollers, preventing flapping while maintaining sheet alignment during high-speed operation.
2Manufacturing precision
If the guide is fixed rigidly to maintain sheet alignment, then alignment precision is improved, but the system cannot adapt to speed differences between belt and rollers, causing flapping
Solution Approach 1:
At least one of the multiple holding parts is displaceable in the circumferential direction of the endless belt. This displacability allows the guide to dynamically adjust its position to accommodate speed differences between the endless belt and the conveyance rollers, preventing sheet flapping while maintaining alignment precision through the multiple guide parts.
Solution Approach 2:
The system allows for changes in the positional parameters of the guide parts relative to the belt, enabling adaptation to varying operational conditions. The displaceable holding parts can adjust their circumferential position to match speed variations, maintaining optimal sheet guidance across different operating speeds.
3Stability of the object's composition
If multiple holding parts are fixed to the belt to support the guide, then guide stability is improved, but the system lacks flexibility to adjust to operational variations
Solution Approach 1:
While multiple holding parts are used to support the guide for stability, at least one of these holding parts is configured to be displaceable in the circumferential direction of the belt. This creates a hybrid system that maintains guide stability through multiple support points while incorporating dynamic adjustment capability to adapt to operational variations such as speed differences.
Data Source
AI summary
A sheet guide includes an endless belt, and a guide supported by a plurality of places of the endless belt, the guide configured to hold a downstream end of the sheet in a conveyance direction of the sheet, wherein the endless belt is configured to rotate to move the sheet held by the guide in the conveyance direction.