Vacuum Conveyor Label Applicator for High Speed Cylindrical Packaging
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Solution Overview
Problem
Current label applicator systems for cylindrical objects are inefficient due to 'long feed' configurations, which require more frequent roll changes and limit labeling speed to about 300 articles per minute, as they can only handle fewer labels per roll and necessitate system shutdowns.
Innovation Solution
A label application system using a vacuum conveyor with a flat vacuum surface and stepper motor to move labels in a 'short feed' orientation, allowing labels to be cut and applied transversely to the article flow, enabling higher labeling speeds by carrying more labels per roll and reducing change-out frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 'long feed' label configuration is used, then labels can be applied to cylindrical objects, but labeling speed is limited to about 300 articles per minute and roll change frequency increases
Solution Approach 1:
The patent inverts the conventional label feeding approach by using a transverse feed mechanism instead of longitudinal feed. Labels are fed across the width of the conveyor belt rather than lengthwise, allowing multiple labels to be carried on each roll and enabling the system to exceed 800 articles per minute without frequent roll changes.
Solution Approach 2:
The invention introduces a new dimensional approach to label feeding by orienting labels perpendicular to the article flow direction. This transverse arrangement allows labels to be positioned on the conveyor in a grid pattern, maximizing the number of labels per roll and enabling high-speed operation without the limitations of traditional longitudinal feeding.
2Quantity of substance
If labels are fed in 'long feed' configuration, then application to round articles is possible, but fewer labels can be carried on each roll requiring more frequent change outs
Solution Approach 1:
The patent reverses the conventional label orientation by feeding labels transversely across the conveyor width rather than lengthwise. This inversion allows the full width of the conveyor to be utilized, carrying many more labels on each roll and eliminating the need for frequent roll changes that would reduce productivity.
3Manufacturing precision
If labels are applied while vacuum conveyor is moving, then continuous operation is possible, but label positioning precision decreases
Solution Approach 1:
The system employs periodic stopping and starting of the vacuum conveyor to achieve both precision and speed. The conveyor stops briefly at the application point to ensure accurate label positioning, then immediately resumes movement to maintain high throughput. This periodic action allows the system to exceed 800 articles per minute while maintaining precise label placement.
Solution Approach 2:
The vacuum conveyor acts as an intermediary that can rapidly transition between moving and stationary states. This mediator capability allows the system to maintain continuous operation while achieving precise positioning at the moment of label application, resolving the conflict between speed and accuracy.
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 system achieves labeling speeds exceeding 800 articles per minute by allowing more labels on each roll and minimizing system shutdowns, with labels applied in a stationary position on the vacuum surface as articles rotate, enhancing efficiency and speed.
Implementation Method 1
a vacuum conveyor on which a flat vacuum surface is disposed
Data Source
AI summary
A label application system for applying paper non-pressure adhesive labels to relatively short, round, straight-walled articles is constructed and designed so that labels to be applied to passing articles are delivered to the label application zone on a vacuum conveyor in a short feed orientation, with each label being oriented lengthwise across a width of the vacuum conveyor. At the time of labeling, the label is held stationary on a flat vacuum surface, and the label is applied by spinning the articles past the vacuum surface. As a result, the system is capable of labeling articles at processing speeds of up to or exceeding 800 articles per minute.