Working Hydraulics of STS machines


Dual Flow Pump and Servo Motor

STS machines offer a standardized molding platform covering extensive applications from small to medium sized parts. Derived from the proven S-Tech series of machines, STS encompasses all the benefits of a unified design which makes it cost effective. The standardized design for the clamping unit along with preset specifications on the injection unit makes this series an attractive bet for a value buy. Moreover a host of additional features that come with the standard equipment would bring in the much needed flexibility in your molding line. Optimized machine foot print in STS would offer a better floor space utilization, this means that you save on the valuable space cost which is ever increasing.

Toshiba machine offers STS Series Machines with unique Servo Hydraulics “Dual Flow Pump and Servo Motor” having less connected load and provides inherent advantages of modular injection unit specifications of Hydraulic Machines. The SERVO Pump System delivers optimum power required for various stages in molding process (by varying the frequency of the voltage; current utilization depends on the load/resistance). The flow (pump rotating speed) is precisely controlled by the AC servo motor and driver based on the command signals from the PLC. The Servo drive computes deviation by detecting load pressure against a speed/pressure command signal from the system (IMM) and provides a rotating speed command to the servo motor. Thus, high precision and high response control is achieved in the injection molding process.
STS series is presently available in lower and medium tonnages from 600kN to 2750kN for parts weighing from 20grams to 1500 grams. STS is ideally designed to meet the process requirements of a variety of molding jobs that require optimal performance with a reasonable initial investment.
STS machines are offered with indigenously developed LNC6 control. User friendly touch sensitive controllers are simple to operate. The LNC6 control system is equipped with a high speed "ARM" processor which offers state of art graphics design. The 12.1" touch screen enables the user to interact with the machine very easily and feel comfortable at it.

Salient Features & Advantages of STS machines :

  • Lower Installed Power Rating.
  • Closed Loop Flow & Pressure control through Servo motor and Servo drive.
  • Pump will not be running in idle condition hence “No waste of energy” during cooling time due to zero pressure & flow.
  • No limitations in handling long “Hold-on” times.
  • Energy Savings as much as 50% over conventional hydraulics.
  • Low Power Factor Losses.
  • Environmental Friendly ­ Less Noise Level & Less Heat.
  • Generation (Minimize the Cooling requirements).
  • Excellent Mold Safety even at High Speed Operations due to fast responding hydraulic system.






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