At PACK EXPO 2010, Extreme Packaging Machinery
changed the market's expectations with a 100 cpm servo shrink wrapper costing significantly less than conventional designs.
Extreme's engineers simplified mechanical fabrication and replaced pneumatic cylinders, temperature controllers, PLC, HMI and all their separate software packages on its SAL (Servo Auto Length) series wrappers. The direct result is reduced cost and increased performance.One hardware, one software, no air
The new control platform lowers the cost of ownership, from setup to remote diagnostic functionality. Based on Automation Studio, the integrated software environment from B&R Industrial Automation
, all aspects of machine control were developed in the same program.
One B&R panel runs the program on a single processor, and it all resides on a Compact Flash disk. The new controller combines all control functions, including two PID temperature loops for the sealing process, in a single touchscreen operator panel. The micro PLC did not have the ability to perform temperature control, but the B&R panel does.
Replacing the pneumatic cylinders, two servos precisely control seal position, dwell time and pressure for the cross seal carriage and seal bar, synchronizing vertical and horizontal travel. Three AC variable frequency drives (VFDs) control infeed, side seal, and traveling cross seal belt.
Together, the controls upgrade increases speed from 70 up to 100 cycles per minute. The VFDs utilize digital communications, simplifying configuration and diagnostics. The servo drives also eliminate air lines, compressor, filtration and control wiring with an energy efficient alternative.
The new wrapper complements a full line of servo wrappers up to 7 axes and 200 cpm, as well as a complete line of shrink tunnels and infeeds.