Line-of-Sight, Out of Mind: Inertial Roll Alignment. Ryan Best Technical Sales Representative

Transcription

1 Line-of-Sight, Out of Mind: Inertial Roll Alignment Ryan Best Technical Sales Representative

2 Overview The importance of Roll Alignment Traditional Alignment Methods PARALIGN Inertial Roll Alignment Results of PARALIGN service performed on curing oven Conclusion

3 Roll Misalignment

4 Roll Alignment

5 Why is Roll Alignment Necessary? Reduction of: Uneven Coating Tracking Telescoping Roller and Bearing Wear Scrap Paramount for Maintenance Plans Indicate existing misalignment Diagnose misalignment in order to reveal additional maintenance Acknowledge alignment trends over time

6 Optical Alignment Methods Traditional Methods Theodolites Laser tracking Pi Tape Limitations Line-of-sight Atmospheric conditions Enclosed spaces User Influence Setup time

7 PARALIGN Designed and developed by PRUFTECHNIK, the PARALIGN alleviates the limitations of traditional alignment methods and provides the opportunity to measure rolls using inertial technology. Contains 3 ring-laser gyroscopes Measure x, y, z Extremely high sensitivity and stability Same gyroscopes used in military aircraft and aerospace technology

8 Patented Sweep Mode Points are recorded as the PARALIGN is swept across the roll surface At least 20 is needed 80 points per measurement 30 seconds per measurement 2 measurements per roll to ensure repeatability Filtered Out roll Acceptable Readings

9 Results & Reporting Roll axis is translated to an angle (offset). Axis Angularity x Roll length = Vertical and Horizontal Offset Axis angle is compared to a Reference Roll Offsets shown instantly

10 Hardened Rail Feet Uses machined, flat feet to slide tangentially along rolls during sweep. A filter range is determined by the Yaw gyroscope. The software removes any readings outside of the filter range. Measurement not limited by diameter. No v-block swapping. Precision is achieved on rolls varying from yankee dryers to small idlers. Allows the measurement of irregular shaped rolls.

11 Service Protocol One-time initial plate set-up (~1 hour) Calibration (5 minutes) Measuring rolls (20 minutes) Results (displayed instantly) Adjustments Recheck adjusted rolls After service, remove the plate

12 Converting Industry The converting industry takes a continuous web through processing machines (such as printing presses, laminating, coating and slitting machines) and converts or changes the web of material into an intermediate form or final product. Laminate Printing Facility This manufacturer produces decorative laminates for residential and commercial interior environments.

13 PARALIGN Service in Laminate Printing PARALIGN technicians measured parallelism of 145 rolls in printing press line 44 rolls located in curing oven Target tolerance: On-site mechanics: 2 Aided in adjustments: 28 rolls Rechecked corrected rolls Completed standard service procedure prior to leaving jobsite Time needed: 12 hours

14 Upper Oven Results Initial position of rolls inside a second floor curing oven

15 Upper Oven Results Final position of roll inside a second floor curing oven Curing Oven Measurement Statistics Measurement time: 2 hours Rolls Adjusted: 9 The oven was measured over the course of two hours, in 20 minute measurement windows. It is located on a second-floor mezzanine with metal grated walkways.

16 Problem Solved Facility operators initially observed tracking After corrections were made, improvements were noticed Less downtime Less waste Faster production speed

17 Other Industries Tissue Aluminum Steel Extruded Film Tire Carbon Fiber/Fiberglass Lamination Vacuum Metalizing Carpet Textiles Blown Film

18 Advantages of PARALIGN Rapid set-up & measurements Line-of-sight not a requirement Location, elevation and proximity are not factors Results are not dependent on user or atmospheric conditions

19 Thanks for listening!