Plate Handling System increases productivity in a busy laser job shop
 

Situation

Windsor Laser Cutting Inc., Windsor Ontario is a busy laser job shop with limited space around the lasers. The area around the lasers is very congested with finished parts, workbench, scrap bin and the skeletons. This requires continuous lift truck traffic to exchange bundles of sheets and retrieve parts at the lasers. The operator manually loads the lighter sheets on the laser. The lift truck when loading heavier sheets or retrieve finished parts occasionally hit the laser causing an unnecessary expense and down time. Productivity, safety, damaged sheets and scratched parts necessitated a change.

Windsor Industrial Services, 5500
D'Cocco Court, Windsor, ON N0R
1L0, 519-737-1824, www.lasermate.ca

Resolution

Vacuum or magnetic lifters (steel only) required jib or overhead crane that needs to be integrated. Congestion at the laser, a sheet swinging on a cable is still a safety issue for the staff and equipment. The Flexible Manufacturing System (FMS) required considerable space, expensive, limited flexibility for a job shop and required a higher level of skilled personnel.

Windsor Industrial Services a local material handling fabricator designed and built a system that is now marketed as LaserMate that provides us with a cost effective, safe and user-friendly method of loading our sheet. LaserMate is a floor supported overhead bridge that straddles the two lasers with a four-shelf tower away from the laser bed. The bridge supports a carriage with four forks (similar to the mast of a lift truck). The carriage has vertical and side-to-side motions to assist in locating the sheet to the laser table and picking the sheet from the floor or from the tower. Eight individually controlled vacuum cups are attached below the forks. Eight retractable hooks for skeleton removal are also attached to the carriage. The controls are a Windows based PC with a touch screen on a pendant, outside of the bridge envelope, with simple functions, to move the carriage, vacuum and emergency stop with limits to prevent the carriage from crashing the laser table and tower. Variable speed AC motors provides smooth motion of the bridge and carriage.

The LaserMate now allows the lift truck to load the tower with enough material for the shift, load the laser bed under two minutes, remove skeletons and maximize floor space around the laser table to process the finished parts