Carton Alignment via Differential Conveyor Speed Control
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Solution Overview
Problem
Existing methods for aligning and transporting small or irregularly shaped folding box blanks are inefficient, as they struggle with precision alignment and gentle handling, and have limited transport capacity due to the use of cam belts, which can damage boxes and are not easily scalable.
Innovation Solution
A device that aligns boxes by controlling the speed of transport means on either side to adjust the position of the box, ensuring precise alignment without applying excessive force, and uses a feed and transport device with conveyor belts and pressure belts to maintain contact and prevent slippage, allowing for high-speed transport and increased throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cam belts with cams are used to align cartons, then alignment precision is improved, but transport capacity deteriorates because only one box can be transported between two cams
Solution Approach 1:
The patent replaces the mechanical cam belt alignment system with a differential conveyor belt system controlled by independent drives. Instead of using physical cams to stop and align boxes, the system uses two conveyor belts with independently controllable speeds to gently guide boxes into alignment through speed differential, eliminating the need for spaced cams and enabling continuous high-speed transport while maintaining alignment precision
Solution Approach 2:
The patent changes the operational parameter from discrete cam stops to continuous differential speed control. By independently adjusting the speed of each conveyor belt, the system achieves alignment through parameter variation rather than mechanical intervention, allowing multiple boxes to be transported simultaneously at high speed without the spacing constraints of cam belts
2Productivity
If cam belt speed is increased to improve transport capacity, then productivity is improved, but box damage increases due to excessive impact forces
Solution Approach 1:
The patent replaces the high-impact cam belt system with a low-impact differential conveyor system. Instead of using cams that strike boxes to achieve alignment, the system uses continuous gentle contact from two conveyor belts with independently controlled speeds, eliminating impact forces while maintaining alignment capability and enabling high-speed operation without box damage
Solution Approach 2:
The patent introduces dynamic speed control to the conveyor system, allowing the speeds of the two conveyor belts to be independently adjusted during operation. This dynamic adjustment enables the system to achieve alignment through speed differential rather than impact, maintaining gentle handling even at high transport speeds and eliminating the box damage associated with static cam belt systems
3Manufacturing precision
If cam belts are used for alignment, then alignment precision is improved, but handling gentleness deteriorates due to high dynamics and large impulses
Solution Approach 1:
The patent replaces the high-dynamics cam belt alignment system with a low-dynamics differential conveyor system. Instead of using cams that impart large impulses to boxes, the system uses two conveyor belts with independently controllable speeds that gently guide boxes into alignment through continuous contact and speed differential, achieving precise alignment without compromising handling gentleness
Solution Approach 2:
The patent changes the fundamental operating parameter from high-impact discrete stops to low-impact continuous differential movement. By controlling the speed difference between two conveyor belts, the system achieves alignment through parameter variation rather than mechanical impact, maintaining both alignment precision and gentle handling simultaneously
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 precise alignment and gentle handling of small or irregularly shaped boxes, significantly improving transport capacity and efficiency by allowing multiple boxes to be aligned and transported at a high speed without damage, while maintaining precise positioning for gluing or joining.
Implementation Method 1
The carton is 'clamped' in a gap formed by the conveyor belts and the pressure belts, so that it is pressed against the conveyor belts with a constant and predetermined normal force. As a result, the speed of the conveyor belts is transferred to the carton without slippage.
Data Source
Figure 1
Figure 2a~2c
Figure 3
AI summary
Disclosed is a device for aligning cartons, comprising first conveying means and second conveying means, the first conveying means and the second conveying means being mutually spaced and the drives of the first conveying means and the second conveying means each having a speed controller. Also disclosed is a method for aligning cartons.