Front-edge paper feeding device with segmented suction and grid plate
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Solution Overview
Problem
Conventional front-edge paper feeding devices for corrugated cardboards suffer from uneven air extraction, leading to idle suctions, energy waste, and uneven friction, causing skew feeds and quality issues in manufacturing processes.
Innovation Solution
A front-edge paper feeding device comprising transmission shafts with conveyor rollers, a grid plate that elevates and descends, a servomotor for intermittent rotation, and a suction box to ensure smooth and continuous cardboard conveyance, allowing for precise control and even friction distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air extraction device is used to continuously suck and pull the bottom corrugated cardboard from the hollow platform, then the cardboard can be conveyed, but idle suctions occur frequently causing energy waste and uneven friction leading to skew feed
Solution Approach 1:
The hollow platform is divided into multiple independent hollow positions, each capable of independent air extraction. This segmentation allows selective activation of air extraction at specific positions where cardboard is present, eliminating idle suctions in empty areas while maintaining conveyance efficiency.
Solution Approach 2:
The grid plate is designed to elevate and descend reciprocally, dynamically changing the contact state between the cardboard and conveyor belts. This dynamic movement ensures even friction distribution and prevents skew feed while maintaining continuous conveyance capability.
2Productivity
If air extraction power is increased to compensate for idle suctions, then conveyance can be maintained, but uneven friction and skew feed worsen
Solution Approach 1:
By segmenting the air extraction into multiple independent hollow positions, the system can precisely control air extraction at specific locations, ensuring even friction distribution and preventing skew feed while maintaining conveyance continuity.
Solution Approach 2:
The reciprocating grid plate creates dynamic contact conditions that naturally distribute friction evenly across the cardboard surface, eliminating the need for increased air extraction power and preventing skew feed issues.
3Ease of operation
If conventional air extraction device is used with interconnected passages, then cardboard can be extracted, but uncertain air flow distribution causes uneven wearing and skew feed
Solution Approach 1:
The air extraction system is segmented into multiple independent hollow positions with individual air extraction passages. This segmentation enables precise control of air flow to specific locations, ensuring even friction distribution and high-quality transfer while maintaining operational simplicity.
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
The solution enables efficient, smooth, and continuous feeding of cardboards, reducing energy waste and ensuring consistent conveying forces, thereby improving the quality of cardboard transfer and manufacturing processes.
Implementation Method 1
the suction box drives the cardboard to fall quickly and attach onto the grid plate
Implementation Method 2
the conveyor wheel drive the cardboard to move in order to convey and output the cardboard
Data Source
AI summary
A front-edge paper feeding device is applicable for automatically conveying a stack of cardboards one by one. During operation, the stack of cardboards is placed on a grid plate, and a control element is provided for controlling the grid plate to elevate and descend reciprocally. When the grid plate elevates, the cardboards are separated from a conveyor wheel. When the grid plate descends, the conveyor wheel is exposed, such that the conveyor wheel is in contact with the cardboard. A servomotor is provided for controlling intermittent rotations of the transmission shaft while driving the conveyor wheel, so that the conveyor wheel drives the cardboard to move in order to convey and output the cardboard smoothly.