Support Ring Centering for Closure Inspection During Transport
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Solution Overview
Problem
Existing methods for inspecting container closures are prone to errors due to changes in container position during transport, such as carrier misalignment or varying heights, leading to faulty image recordings that do not accurately reflect closure fit issues.
Innovation Solution
The method involves recording multiple spatially resolved images of the container's circumferential edge and rotationally symmetrical element, using a support ring's position to determine the closure's relative position, and correcting for positional changes by incorporating the support ring's orientation and normal vector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple spatially resolved images are recorded and processed to determine closure position, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The inspection task is segmented into multiple independent image recordings from different spatial positions, each capturing a specific portion of the closure and container mouth. These segmented images are then processed separately before being integrated to determine the overall closure position, reducing the complexity of any single recording system while improving overall measurement precision.
Solution Approach 2:
The system transitions from a single 2D image to multiple spatially resolved images that capture different portions of the closure from various spatial positions. This dimensional expansion allows for more comprehensive position determination without requiring a single complex multi-dimensional recording system, thereby improving precision while managing complexity.
2Reliability
If the recording situation is standardized through calibration, then reliability is improved, but adaptability to position changes deteriorates
Solution Approach 1:
The system dynamically adapts to container position changes by recording multiple images from different spatial positions during transport. Rather than relying on a fixed calibrated position, the system captures the actual position variations and processes these dynamic images to determine closure position relative to the container, maintaining reliability while adapting to position changes.
Solution Approach 2:
The system incorporates feedback from multiple image recordings to continuously adjust and refine the closure position determination. By analyzing the actual positions captured in the images and comparing them against the calibrated model, the system can compensate for position variations and maintain accurate inspection results despite changes in container positioning during transport.
Data Source
AI summary
A method for inspecting containers with closures with a cap portion and a circumferential edge extending around the mouth of the containers. The containers are transported along a transport path by a transport device. During transport, the mouth regions of the containers with closures are illuminated by an illumination device, and at least one image recording device records at least one image of the mouth regions of the containers with closures, and records at least one spatially resolved image of a portion of the circumferential edge and one structure on the circumferential edge is detected, and, at least one value of this structure, a value characteristic of a relative position of the closure relative to the container and/or relative to the rotationally symmetrical element and/or of the closure is determined.