Product category:
Vision and scanning systems
News Release from: Cognex UK | Subject: Checker vision system
Edited by the Manufacturingtalk Editorial
Team on 22 November 2006
Vision system counts labels for zero
defects
In order to reach zero defects, AstraZeneca needed a more accurate vision system to count label numbers, to check whether the edge of neighbouring labels on the production line are correctly aligned.
As a global player, AstraZeneca's top production priority is to ensure the accuracy of label detection as well as the stability of the detection system When AstraZeneca in China decided to turn to vision they realised they needed a supplier who could assure high standards with respect to the accuracy of product label detection while maintaining high production speeds
This article was originally published on Manufacturingtalk on 28 May 2001 at 8.00am (UK)
Related stories
Vision devices speed up robotic assembly at Volvo
At the Volvo K?ping factory, seven robots assemble 17 components in 30 seconds. They use digital cameras and advanced, patent-applied image processing technology.
Pickled copper sheets checked by machine vision
Cognex says that Wieland-Werke AG, one of the world's largest copper strip manufacturers, has integrated Cognex's SmartView ICN web inspection system on its copper pickling line in Germany.
Cognex Checker proved to be the best choice.
As one of the leading pharmaceutical companies in the world with headquarters in London and RandD headquarters in Sweden, AstraZeneca has a business presence in over 100 countries, including 31 manufacturing sites in 20 countries.
AstraZeneca China has its headquarters in Shanghai , with branch offices in 15 cities across the mainland China and one manufacturing plant in Wuxi city.
Further reading
Complex vision technology in an affordable unit
Cognex have introduced the In-Sight 2000, an entirely new type of industrial machine vision sensor at a cost usually associated with "smart cameras"
Vision systems retrofitted like CNC
Special purpose machine tools and assembly systems, with Cognex machine vision systems as an integral part, are being supplied to the automotive industry by Douglas Curtis Machine Tools
Vision system dedicated to electronic production
Cognex has introduced Display Inspect - a machine vision software and hardware package for inspecting displays, keypads, and enclosures on LCD and LED display-based products.
Product quality is a decisive factor in the increasingly competitive pharmaceutical industry, in which the content of the label is closely tied to consumer safety and can also influence consumer perceptions.
AstraZeneca needed to improve the accuracy of label detection in order to maintain production quality.
The problem arose from the assistant system counting product labels as traditional electric-photo sensors often encounter errors when checking the edge of two neighbouring labels.
These sensors are not competent enough to meet such high speed production requirements.
In order to reach zero defect level in production, AstraZeneca needed a more accurate vision system to count label numbers, to check whether the edge of the neighboring labels on the production line are correctly aligned and to raise the alarm when an error occurred.
AstraZeneca performed a series of tests on their production line using vision systems from Cognex as well as from several other vision suppliers.
While they found that all the systems tested met basic production requirements, the Cognex Checker stood out as the intelligent sensor capable of going further.
What gives Checker a primary competitive advantage is an integrated LED illumination and lens.
Other vision systems need an extra light source which can mean higher costs.
Therefore, Checker was the obvious choice for AstraZeneca.
Every production line in the plant is fully automated, running at a fast speed and is capable of self-adjustment according to labelling speed.
In order to ensure the optimum performance of Checker on the production line, free run is chosen as the trigger and pattern sensors to check the edge of neighbouring labels and detect the right place to label them.
Checker has an integrated LED illumination and lens.
As well as having a compact appearance, it is easy to configure and install.
The output ports transfer two kinds of signal, 0 output as counting and 1 output as alert.
Checker can analyse up to 500 images per second and is characterized by "train and go" capability communicating with a PLC that controls the equipment.
The system uses a touch operation panel to display the number of labels.
The operation staff can quickly and easily carry out job selection and inspection tasks just by touching the panel.
Cognex Checker is suitable for the high speed production system, so it easily meets AstraZeneca's requirements.
It checks whether the edge of neighbouring labels is properly aligned during production, ensures the counting of labels and sounds an alarm to alert operational personnel in case of error.
As a result production is carried out effectively and a zero defect level is ensured.
Thanks to the stability and accuracy of Checker, the quality of detection and counting is maintained and a high level of productivity is guaranteed.
Costs are reduced while resolving a difficult problem.
AstraZeneca is considering expanding the application to inspect date codes and inspect packaging. Request a free brochure from Cognex UK ...
• Cognex UK: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
Search the Pro-Talk network of sites
