sensors & systems - Industrial Technology Magazine

More documents

Recommendations

Info

POWER TRANSMISSION Brakes, Clutches & Couplings Tension control in narrow web labelling machines Equipped with a comprehensive range of cooling systems, Andantex claims its new EMP series of brakes and clutches is the widest and most reliable on the market Resolving web handling problems by improving tension control is a cost-effective way to refurbish existing equipment or to enhance the performance of new equipment. It allows an increase in linear speed, production quality and flexibility, and reduces waste. To do this, Andantex, with Merobel, have launched a new range of EMP brakes equipped with the most comprehensive range of cooling systems – necessary components to achieve higher linear speed – and a new digital tension controller, the DGT 300. When it comes to applying variable torque in tension control, EMP brakes and clutches are more reliable (wearless) and easy to implement (constant torque) than friction systems and more cost-effective and easy to maintain than Shaftless systems. The reliability of the Merobel EMP brake and clutch comes from a combination of many different design improvements including factors such as specifically developed wearless surface treatments, magnetic properties of the chosen steel quality, powder composition, ball bearing optimisation to resist to high temperatures, sealing quality and thermal resistance. In addition, computer simulation of the exact working conditions allows the temperature level in any crucial part of the brake to be finely defined. The best solution in terms of cooling system (cooling fins, axial fan, radial fan, or water jacket cooling system) can then be chosen from known machine working conditions. Wide torque range As the versatility of narrow web label machinery has become more important, so the available global range of torque, from 2Nm to 1,000Nm has also become more crucial when considering the application needs. The capability for the EMP brake and clutch technology to offer the widest available continuous torque range is one of its key features. This capability relies on constant research and development for solutions to decrease the drag torque, as well as for the internal magnetic field optimisation to allow a better linearisation of the characteristic curve. Even using the world’s best brake, a tension control system must also include controllers and sensors in order to reach its goal: a guarantee of different, accurate and consistent tension levels on any of the product that the application may require (up to 1% precision). The DGT300 offers all the special features required to deal with the application parameter variations: ADVERTISEMENT FEATURE Chain Solutions Renold has brought together all of its high-tech, problem solving chain products under the new banner of Solutions Products. The move serves to emphasise the opportunities available to engineers who are trying to overcome application challenges caused by anything from lubrication and corrosion to wear, fatigue and abrasion. The Solutions Products range is spearheaded by Renold’s high performance Synergy chain which is solving problems all around the world on applications where companies are suffering from short wear life and unacceptably high levels of downtime to replace worn out chain. On some applications Synergy has slashed chain replacements from once a month to once a year, and one American customer recently described Synergy’s performance as, ‘astonishing’. The complete range of Solutions Products includes, Syno, a range of chain that requires no lubrication, and, uniquely to Renold, this includes a polymer bush version for arduous, heavy-duty and outdoor applications. There is a range of stainless steel chain for applications where corrosion might be a problem, such as in the food industry. Conveyor applications Another Solution Product is Klik-Top polymer block chain for conveyor applications. Unlike other, similar, products Klik-Top chain has no sharp edges coming into contact with conveyed goods and the polymer blocks can be clicked on and off individually without the need to remove the whole chain from the application. The Solutions Products range also includes Sovereign chain for abrasive applications where there are significant amounts of dust and debris that would cause a standard specification chain to wear rapidly. Finally there is Renold's Hydro- Service chain, which has been treated with a series of coatings to protect against corrosion. So effective is the Hydro-Service anticorrosion treatment that chain treated with it will resist corrosion up to 30 times longer than a standard carbon steel chain, but has the same working load capabilities as standard steel. To contact Renold for more information on its Solution Products range, call UK Sales on 01283 512940, e-mail ukchain@renold.com, or visit www.renold.com. More details: Write in 240 on the card 24 INDUSTRIAL TECHNOLOGY • May 2008
web elasticity, bobbin rotational inertia, continuous or stop and go running processes, range of diameter variations, and many more. Designed for both closed loop and open loop tension control, the DGT family of controllers is the up-to-date turnkey solution for unwinding, rewinding and intermediate tension control applications. Web control functions Allowing 100% setting up through the user friendly Windows PC interface, or through the front panel keyboard, these devices include all the requested web tension control specific functions: E-stop proportional to the set point, soft start, hold and release, taper tension and no-stop splice turrets. Advanced regulation features are also offered, such as automatic PID coefficients variation, combined open loop and closed loop control, inertia compensation, smooth start-up with programmable slope as well as motorand drive- specific algorithms. Compatible with standard position sensors, ultrasonic sensors, and any load cell, the design of this product family offers the benefit of fully digital calibration procedures. In addition, direct control of EMP brakes and clutches is available through the built-in power amplifier, and the drive can be controlled with a standard analogue output. This system offers the advantage of easy tuning through a simple Windows PC interface and offers increased flexibility to make production batch changes. Maintenance teams will doubtless appreciate the ability to read and modify all the parameters, and to make data records of the inputs and outputs for easier troubleshooting. MORE INFORMATION: Enter D244 on the card, or visit ‘latest issue stories’ at www.industrialtechnology.co.uk for further details from Andantex More details: Write in 250 on the free information card 3D CAD More details: Write in 251 on the free information card 25
Page 1 and 2: www.industrialtechnology.co.uk Indu
Page 3 and 4: COMMENT & ANALYSIS Industrial Techn
Page 5 and 6: More details: Write in 50 5
Page 7 and 8: More details: Write in 70 7
Page 9 and 10: WE’VE INCREASED OUR PRODUCT OFFER
Page 11 and 12: www.industrialtechnology.co.uk diff
Page 13 and 14: More details: Write in 130 on the f
Page 15 and 16: Dry faster, at less cost. WindJet
Page 17 and 18: KF 170 - now with continuous stroke
Page 19 and 20: Connectors for the food Industry Sp
Page 21 and 22: Food Hygiene & Safety The plain tru
Page 23: Bellows - Huco Flex B flexible coup
Page 27 and 28: AZ_TopPult_a4_4c_engl.indd 1 12.11.
Page 29 and 30: Enclosures, Cabinets & Fans Warning
Page 31 and 32: Control panel design software gets
Page 37 and 38: Springs meet challenging aerospace
Page 39 and 40: Integrated motor delivers accurate
Page 43 and 44: Adhere LCD adhesives make displays
Page 47 and 48: Look no further for great deals on
Page 51 and 52: New Products SENSORS & SYSTEMS Cost
Page 53 and 54: Looking for the Ultimate Sensing &
Page 57 and 58: John Richardson’s ENGINEERING DIA
Page 59 and 60: New Patented Product from WDS Ultr

sensors & systems - Industrial Technology Magazine

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?