Head of computer flat knitting machine

The utility model relates to a head of a computer flat knitting machine, and relates to a knitting-needle triangle mechanism that is applied to a flat knitting machine, and aims at resolving the problems of the prior art that the structure is complicate and the service life is short. A panel is arranged above an triangle soleplate of the head; a guiding groove is respectively arranged at both sides of the knitting-needle triangle of the triangle soleplate, and a guiding block that is fixed on the corresponding density triangle is arranged inside each guiding groove in sliding way; a stepper motor is respectively arranged at both sides of the panel, and the rotation shaft of each stepper motor is provided with a drive plate that is provided with a cam groove; the upper end surface, which is arranged at the outer sides of two guiding grooves, of the triangle soleplate is hinged with a shifting fork; the fork port of each shifting fork is sleeved on a pin shaft on the top side of the guiding block, and a middle