Web Tension & Guiding
Is there a way to improve roll stand tension control?
M
axson offers an economical package for unwind stands that eliminates the Operator's need to adjust a roll stand's brake pressure -
automating the tension control which serves as the basis of a press ready, accurate sheet. The retrofit upgrade
uses a “proportional type” design for automatic tension control. The system includes a tension controller, an air regulator, an electronic-pneumatic converter mounted within an enclosure with a sensor collar mounted on the unwind's spindle and a proximity sensor wired back to the tension controller.
AUTOMATIC TENSION CONTROL SYSTEM An automatic tension control system integrated into the roll stand design allows for brake compensation as the roll decreases in diameter without Operator adjustment. The device eliminates the need to thread the web through load cell tensioning rolls or dancer roll type mechanisms, while still providing the same level of precise web tautness that is required for accurate cut offs on a sheeter. The simplicity of the design lends itself to being retrofitted to existing roll stand installations. The system includes a
tension controller, an air filter, an electronic-pneumatic converter, a sensor collar, and a proximity sensor. The sensor mounts on the roll stand’s arm and monitors the number of rotations, detecting the proximity of the sensor collar. This signal is fed to the tension controller, which reduces the diameter. For the maximum roll diameter, the controller sends the maximum voltage to the electro – pneumatic (E-P) converter. As the roll diameter reduce, the voltage lessens proportionately. The EP converter translates the voltage to air pressure. As the voltage decreases, the air pressure fed to the roll stand brakes is reduced. An added feature of this
design is the ability of the tension controller to monitor a preset “low roll diameter” condition. When a low roll diameter is reached, a signal is sent to the sheeter drive to slow down to a minimum line speed.
umaxsonautomatic.com
convertermag.com
on their print devices themselves, whilst being supported directly by Konica Minolta remotely, and has saved more than 1,000 on-site customer visits across Europe during the first four months of internal pilot usage. As with many other manufacturing organisations, Konica Minolta’s
K
service and support was heavily affected by travel restrictions over the past four months due to COVID-19. The situation accelerated the development and pilot testing of AIRe Link, a tool for remote visual support being developed by the Konica Minolta Business Innovation Centre as part of intelligent connected workplace solutions. Konica Minolta is now offering the beta version of the tool free of charge to external companies, so they can also solve issues remotely when supporting their clients. As a cloud solution, AIRe Link enables a technical specialist to see what
the customer sees, using the camera from the customer’s smartphone or tablet. Rather than installing an application or creating an account, the customer need only click on an invitation link received via SMS and a session opens in their browser. The technical specialist can also use a live pointer or drawing in the snapshot of the customer scene, providing visual navigation during issue analysis and when guiding the customer through the correction procedure. Using AIRe Link results in the faster identification of issues and very often
the remote resolution of problems, helping technicians with less travel, faster troubleshooting, cost reduction and saving in CO2 emissions. It also significantly improves customer satisfaction and safeguards the well-being of service employees. Nick Ranson, UK Director of Value Added Services, Konica Minolta Business Solutions UK, comments, “We continually focus on improving the service we provide and this is no different during the current restrictions. AIRe LINK enables us to not only improve uptime for our customers, but also to continue engaging with them directly and safely, in the new normal where physical interaction isn’t possible.”
BROADER APPLICATIONS In addition to detecting malfunctions on MFP or Production Print devices,
Konica Minolta is also offering the AIRe Link tool as an open beta solution free of charge to its customers, dealers and external companies. It can also be used for devices or machines in other industries, as the
following example of its customer Bruker highlights. Bruker is a global company with 6,000 employees, supplying high-performance scientific instruments and high-value analytical and diagnostic solutions, which enable scientists to explore life and materials at molecular, cellular and microscopic levels. One of Bruker’s customers in Croatia had issues with its instruments. “With
AIRe Link, we were able to resolve the problem remotely and we thus saved travelling to Croatia.” says David Burian from Bruker s.r.o, Czech Republic.
ukonicaminolta.co.uk September 2020 27
onica Minolta Business Solutions UK Ltd (Konica Minolta) is pleased to announce the successful pilot of its new remote visual support tool, AIRe Link. AIRe Link enables companies to identify or solve problems
New link tool for remote visual support
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