Cable extender

The invention discloses a cable extender. The cable extender comprises a motor fixing frame, and a motor is mounted inside the motor fixing frame; two extender body side plates and a front fixing plates are mounted above the motor fixing frame, and the rear portions of the two extender body side plates are provided with a rear fixing plate and a rear sliding plate; a front sliding plate is arranged above the front fixing plate and fixedly connected with the rear sliding plate through a jack rod; the front fixing plate and the rear fixing plate are provided with a driving gear shaft and a driven gear shaft respectively, the driving gear shaft is provided with a driving gear and a driven belt pulley, and the driven gear shaft is provided with a driven gear and a support roller; the front sliding plate and the rear sliding plate are provided with pressure roller shafts, and pressure rollers are mounted on the pressure roller shafts; the rear sliding plate is provided with a screw hole, and the screw hole is prov