Weft thread cutting device looms without shuttles

A weft thread cutting device for shuttleless looms, said weft thread cutting device being placed between a fabric edge, a comb and a warp mouth, on one side, and a weft thread selector, on the other side, said weft thread selector having a plurality of eyelets for guiding weft threads coming from said plurality of eyelets and joining at a vertex located at said fabric edge and at a beating line of said comb where fabric is formed, wherein said weft thread cutting device comprises a rotating disk having a cutting edge, configured to cut the weft threads by a motor which keeps the rotating disk in rotation, and a step control motor, which, through a rotating shaft provided with an eccentric, controls motion of a hinged lever configured to swing with respect to a longitudinal axis of said step control motor, said hinged lever being shaped, at one end, in the form of two arms, which rest respectively on surfaces of two elastic plates, said hinged lever being connected, at the other end, to said eccentric.