Heald supporting frame

Heald supporting frame comprising:

• a pair of horizontal heald supporting cross-members, said cross members comprising box-like structures, said box-like structures being made of composite material and having ends;
• inserts of high mechanical strength connected to said ends of said box-like structures;
• a pair of removable side members, said side members having side member ends and being fixed to said inserts for coupling and rigidly locking together said supporting cross members, and;
• means for connecting said heald supporting frame to a loom fixed to said inserts;
• wherein said inserts are inserted within said ends of said box-like structures, said box-like structures each having walls, an interspace defined between said walls, and an interspace width defined by said interspace, said inserts defining an insert thickness, said insert thickness being equal to said interspace width, and;
• wherein said inserts are constituted by a sandwich-like structure comprising a pair of plates made of metallic or composite materials, and a layer of thermoplastic resin interposed between said plate, said layer of thermoplastic resin having through holes formed therein, said metallic plates having corresponding holes formed therein, said through holes having a smaller diameter than said corresponding holes formed in said plates, said corresponding holes formed in said plates being thus partially covered by a ring of thermoplastic material.