(57) The invention provides a process and a machine by which self-portable tiles for the
roofs of warehouses, industrial buildings and other structures can be produced on
the building site. A machine mounted on the chassis of a truck includes a train of
rolls (5) for profiling metal strip, regulation and maintenance systems corresponding
to each pair of rolls, an operating system made up of a single chain (16), and means
for balancing the profiling machine through central hinges (24) and hydraulic pistons
(25), all synchronised to allow the profiling and curving of the self-portable tiles
produced. Another feature is a venation device that, conjugated to the profiling machine
and located between the last group of profiling rolls and the first group of bending
rolls, and working synchronously with these groups, preferably using the system of
movement transmission of the profiling machine, makes a transverse cold venation in
the lateral longitudinal sections of the adjusted tile, offering a higher mechanical
resistance to the efforts and demands originated by the wind and by the weight of
the self-portable.
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