Machine for welding profiled elements made of plastic material

A machine (1) for welding profiled elements made of plastic material, comprising:

• at least one supporting base (2);
• at least one main welding device (3) of at least a first profiled element (4) and at least a second profiled element (5) which extend along their respective longitudinal directions and are each provided with at least one external area to be welded (6) substantially inclined by an angle comprised between 10° and 80° with respect to said respective longitudinal direction, said main welding device (3) comprising:
• at least one main frame (14) associated with said supporting base (2);
• main retaining means (18, 19) adapted to retain said profiled elements (4, 5) with said external areas to be welded (6) facing each other;
• main heating means (20) associated with said main frame (14) and adapted to heat said external areas to be welded (6);
• main displacement means (21) of said main retaining means (18, 19) adapted to displace said profiled elements (4, 5) between a mutual spacing away position and a mutual approaching position, in which said heated external areas to be welded (6) are joined together;
• wherein said main heating means (20) comprise two heating plates (27), each of which can be placed in contact with a respective external area to be welded (6) and arranged substantially parallel to each other at a predefined distance to define a free volume (V) positioned between said heating plates (27).