| 摘要 |
<p>Machine for extruding thermoplastic products, of the type provided with an externally heated plasticization chamber (5) connected at one end to a unit (70) supplying the material to be plasticized and at the other end to an extrusion unit. The chamber has, arranged inside it, a feeder screw for feeding the material, which is rotationally actuated by a torque motor (17) at the same number of revolutions. A thrust bearing unit (18) is envisaged, which unit is able to oppose the axial thrust imparted by the material to the rotating screw and is fixed to the support structure (2) between the torque motor and the feeder screw and is provided with a transmission shaft connected at one end to the feeder screw and at the other end to the shaft of the torque motor.</p> |
