SD40E Injection Unit Features

For injection, two direct-drive, Sumitomo-built AC servo motors with full closed-loop control and digital sensors provide the SD40E's outstanding speed, precision and energy efficiency. The motor for injection uses a load cell to provide feedback that dictates the speed and torque required for precision injection pressure. The screw drive motor works together with a non-contact type magnetic encoder for long life and exceptional response.

In addition to the high injection speeds and pressures and exceptionally fast velocity response, the SD40E delivers unerring velocity control from .01 mm/sec to 300mm/sec ensuring ultra-high precision disc molding.

For accurate, stable control of shot size, three plasticizing programs allow the operator to set the plasticizing end position and select sharp, standard or soft ramping of screw speed.

Programmable switchover from velocity to hold-selectable by position, external signal, or pressure-delivers precision filling. Hold pressure is settable and accurate to 1 kg/cm² from 0 to 1784 kg/cm².

The SD40E also features a precise nozzle touch unit and 2-zone nozzle and 4-zone barrel PID temperature control to optimize melt conditions with 2-second sampling and temperature zones settable to 0.1°C.

Please use the Info links at left for more information on the SD40E direct-drive all-electric disc molding subsystem.