Cable tray rolling machine is a kind of equipment for making cable tray by various material. In the electrical wiring of buildings, a cable tray system is used to support insulated electric cables used for power distribution and communication. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in commercial and industrial construction. 
The following cabel tray drawing is from a Kenyans customer.He requested automatic-change cable tray roll forming machine. 

features of this machine:
Adjusting range of side-to-side：100mm-600mm.
Adjusting range for height of lateral plate : 30-105mm.
at the same time, can produce cover board (with width of 100~600 mm)

PLC controls to move back and forwards to reach linear effect and then do the sizes changing.