Rod-shaped electric heater

The utility model discloses a rod-shaped electric heater which comprises a rod body, a pipe connector, sheath sleeves, heating tubes and sensors. The rod body is a straight rod member and is composed of a top-cut conical body and a cylinder body, wherein a small end face of the top-cut conical body faces towards a sizing material inlet of matching equipment, and a free end of the cylinder body is provided with threads and is connected with the pipe connector to form location installation. The heating tubes are embedded in the rod body at equal intervals, the straight-rod-shaped heating tubes and the rod body are coaxial, free ends of the heating tubes are arranged at one end of the cylinder body of the rod body, the sheath sleeves are arranged at the free ends of the heating tubes, and one sensor is coaxially embedded between every two adjacent heating tubes. The rod-shaped electric heater has the advantages that sizing materials and alkali-free glass fibers which are guided into a mould cavity are evenly hea