Cutting device of a textile yarn during its feeding to an operating device

A device for cutting a textile yarn during its feed to an operator element, said device comprising:

• a cutting blade member inserted into a housing presenting at least one aperture for passage of said yarn,
• said blade member carried by a movable support element subjected to actuator means for movement of the movable support element,
• said movable support element for assuming two working positions, a first position in which the blade member is spaced from the year and a second position in which said blade member impacts the yarn and cuts the yarn,
• the actuator means comprising a bistable electromagnetic actuator,
• the movable support element cooperating with a spring arranged to urge the blade member into the yarn cutting position after activation of the bistable electromagnetic actuator,
• said spring being interposed between a first end of said support element carrying the blade member and said electromagnetic actuator,
• wherein said electromagnetic actuator comprises an electromagnet inserted into a structure supporting at least one permanent magnet for retaining the movable support member in the first working position,
• the magnetic force retaining the support member in said first working position being nullified by the activation of the electromagnet to hence enable the spring to move the support member into the second working position.