NSK ball screws in automatic translation of moulds for injection moulding

Italy based Automationware has taken delivery of two special large ball screws from NSK aimed to facilitate the automatic translation of large moulds used in injection moulding machines.

Located near Venice, Automationware was established in 2002 with engineering expertise 
spanning the core motion and control technologies found in advanced mechatronics 
applications. The company’s linear axis and electro-cylinder products provide genuine
 alternatives to hydraulic and pneumatic systems. Proactive and progressive in the 
marketplace, the business invests heavily in developing new solutions, and recently turned 
to NSK for assistance with a special project. The company was in the process of developing large electric actuators (cylinders) for the 
translation of heavy moulds used in injection moulding presses. Destined for machines that 
stand at over 6m in height, the cylinders produce up to 80kN of force and travel at a velocity of up to 1m/s.

The principal objective was to guarantee that the required force could be applied for 24
hours every working day, for a period of at least two years. Focused on this goal, in March
 2018 NSK set about developing two ball screws based on its high-load HTF technology.
 HTF stands for ‘High Tough Force’, special translational drives developed to offer an electromechanical alternative to
 hydraulic drives. These advanced ball screws allow fast traverse rates (and thus short cycle
times) in combination with high precision and extremely high axial forces. Their patented 
geometry is designed to distribute the axial forces equally over all of the balls. In tandem 
with separator technology (ball separation), the geometry prevents premature wear and 
guarantees high reliability.

The first two NSK HTF ball screws for Automationware, one of which measures more than 
1.8m in length, were delivered in January 2019. The company then showed its new
 electric cylinders featuring the ball screws at last year’s edition of the industrial automation and digitalisation trade show SPS Italia 2019.

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