A conveyor system for a checkout counter
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Solution Overview
Problem
Existing conveyor systems in automated checkout counters struggle to accurately align and separate articles of varying sizes and shapes for efficient identification by sensor systems, leading to inefficiencies and potential fraud.
Innovation Solution
A conveyor system with a loading conveyor tilted in the lateral direction, an intermediate acceleration device with rollers driven by an electrical motor, and a second conveyor moving at a higher speed to increase article separation, combined with a classification device using spectroscopy sensors for precise identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If articles are transported on a conventional horizontal conveyor belt, then articles can be moved from customer to operator, but articles cannot be accurately aligned and separated for sensor identification
Solution Approach 1:
The conveyor belt is tilted in the lateral direction (perpendicular to the transport direction) to enable articles to align themselves laterally through gravity while moving forward. This dimensional change from horizontal to tilted configuration allows simultaneous achievement of transport and alignment functions
Solution Approach 2:
Articles automatically align themselves laterally on the tilted conveyor belt through gravitational force without requiring additional alignment mechanisms. The tilt angle causes articles to naturally slide to the lowest point, achieving self-alignment
2Measurement precision
If a single conveyor belt is used, then the system is simple, but articles cannot be separated to increase distance between adjacent articles for accurate identification
Solution Approach 1:
The conveyor system is divided into multiple sections: a loading conveyor, an intermediate acceleration device, and a second conveyor. Each section operates at different speeds to progressively separate articles, with the second conveyor moving faster than the loading conveyor to increase spacing between adjacent articles
Solution Approach 2:
The conveyor system uses variable speed operation across different sections. The intermediate acceleration device accelerates articles from the loading conveyor speed to the second conveyor speed, dynamically adjusting the transport rate to optimize both separation and throughput
3Measurement precision
If articles are closely spaced on the conveyor, then transport efficiency is high, but sensor systems cannot accurately identify each article
Solution Approach 1:
The conveyor path is segmented into loading, acceleration, and transport zones. Articles are spaced closely during loading for efficiency, then progressively separated in the acceleration zone, and maintained at optimal spacing on the second conveyor for both identification and continued efficient transport
Solution Approach 2:
The system dynamically adjusts article spacing through variable speed conveyors. The intermediate acceleration device increases the speed differential between sections, transforming close spacing at the loading end to larger spacing at the discharge end, optimizing both efficiency and identification 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 ensures accurate alignment and separation of articles, enabling efficient identification and preventing fraud by maintaining article position and weight integrity, thus improving operational efficiency and customer experience.
Implementation Method 1
the loading conveyor is tilted with respect to a horizontal plane in a lateral direction
Implementation Method 2
an intermediate acceleration device being arranged between the loading conveyor and the second conveyor for accelerating the articles when moving from the loading conveyor to the second conveyor
Data Source
Figure 1
Figure 2a~2c
Figure 3a
AI summary
A conveyor system for transporting articles in a checkout counter is provided. The system comprises a loading conveyor (24) on which articles may be placed by a customer, a second conveyor (25) arranged in series with the loading conveyor (24) which second conveyor (25) is operated at a higher speed than said loading conveyor (24) for increasing the distance between adjacent articles, wherein the loading conveyor (24) is tilted with respect to a horizontal plane in a lateral direction, and wherein said conveyor system further comprises an intermediate acceleration device (26) being arranged between the loading conveyor (24) and the second conveyor (25) for accelerating the articles when moving from the loading conveyor (24) to the second conveyor (25).