Conveyor Belt Alignment for Variable Box Sizes
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Solution Overview
Problem
Conventional conveying systems struggle with accurately positioning and processing box-shaped articles of varying sizes on conveyor belts, particularly in pharmaceutical and postal applications, where different sizes and orientations require complex and time-consuming adjustments for printing, reading, and labeling operations.
Innovation Solution
An apparatus comprising an output conveyor with a guide member and an input conveyor that can move in translation perpendicular to the conveying direction, allowing box-shaped articles to be aligned and transported efficiently, with optional top guiding members for precise positioning of print heads, readers, or labeling units on multiple faces of the articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional rail guides are used for positioning articles, then positioning accuracy is improved for articles of the same size, but the system requires stopping and manual reconfiguration when article sizes change
Solution Approach 1:
The patent applies the dynamics principle by making the guiding rails movable rather than fixed. The rails can automatically adjust their positions along the conveying direction based on the size of articles being transported, eliminating the need for manual reconfiguration. This dynamic adjustment capability allows the system to maintain positioning accuracy across different article sizes while continuously operating without stops.
Solution Approach 2:
The system implements self-service through automatic detection and adjustment mechanisms. Sensors detect article dimensions and automatically trigger rail repositioning without human intervention. The system self-adjusts to maintain optimal positioning accuracy for varying article sizes, eliminating manual setup operations and reducing downtime between different article batches.
2Adaptability or versatility
If adaptable alignment mechanisms with moveable rails are used, then automatic adaptation to different article sizes is improved, but the system complexity increases
Solution Approach 1:
The patent applies universality by designing guiding rails that serve multiple functions: they provide lateral guidance, enable automatic positioning through movement along the conveying direction, and adapt to various article sizes. This multi-functionality reduces the need for separate adjustment mechanisms for each positioning task, thereby managing system complexity while enhancing adaptability.
Solution Approach 2:
The system utilizes parameter changes by varying the positional parameters of the guiding rails along the conveying direction. Instead of complex mechanical reconfiguration, the rails adjust their coordinates based on detected article dimensions. This parameter-based adaptation simplifies the control system compared to mechanical linkages while maintaining high versatility across different article sizes.
3Productivity
If multiple printing or reading stations are added to handle different article faces, then processing capability is improved, but the line complexity increases
Solution Approach 1:
The patent applies the another dimension principle by utilizing the conveying direction as an additional spatial dimension for positioning. Instead of adding multiple stations at different locations, the system positions printing and reading devices along the conveying path, allowing them to access different article faces as articles pass by. This dimensional approach to positioning reduces the need for multiple complex stations while maintaining comprehensive processing capability.
Data Source
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AI summary
The invention relates to an apparatus for aligning box- shaped articles of various sizes on a conveyor belt, as well as a printing station, a reading station, and a labelling station including said apparatus. The apparatus comprises an input conveyor belt operable to move transversally with respect to an output conveyor belt conveying direction, to adapt to a transverse size of a transported box-shaped article, and feed said output conveyor belt with corresponding aligned article.