| 摘要 |
<p>A system for maintaining pressure in an injection molding machine, in which an injection shaft is driven by an electric motor (20) which is controlled by a numerical control unit (30). To maintain the pressure, the numerical control unit (30) operates the electric motor (20) while applying torque limit thereto, so that a predetermined pressure is applied to the molten material in the metal mold (4).</p> |
