back to top
My wish lists
Save your wish list
If you want to add more content to your wish list, simply log in. If you do not have a user account, please register for the Hanser Customer Center.

» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.
Your wish lists
If you want to use your wish list during your next visit, simply log in. If you do not have a user account, please register for the Hanser Customer Center.
» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.

« Back

Your advantages at a glance

  • One login for all Hanser portals
  • Individual home page for faster access to preferred content
  • Exclusive access to selected content
  • Personal wish lists on all portals
  • Central management of your personal information and newsletter subscriptions

Register now
Deutsch
Bookmark Bookmarked
06-05-2008

Electrohydraulic components

Electrohydraulic Units

Electrohydraulic components

Proportional valves modulate hydraulic parameters according to electronic reference signals. Atos spa, Sesto Calende, Italy, has developed a range of electrohydraulic components in collaboration with plastics machinery manufacturers. These components increase the efficiency of individual process steps. The digital Atos electronics can control position, speed and/or force in any electrohydraulic axis within a closed-loop system.

The components are designed to international standards according to a modular system and produced in high volume. In the injection molding process, a digital servo-proportional valve with a specially shaped piston controls the injection rate and pressure profiles, which is normally the job of 2 or 3-way directional control valves or conventional proportional valves. The built-in p/Q controller is connected for this purpose to an external pressure transducer in order to control the injection phase and the holding pressure and ensure transition phases that are both rapid and even. Digital proportional 2 or 3-way cartridges with high dynamic performance (response time <15ms) in a double closed loop circuit are perfectly suited to applications with controlled volume flow rates of up to 10,000l/min and minimal pressure drop ( dp < 25bar), such as occur in the processing of semi-crystalline plastics. To increase the injection rate and improve damping at the end of the mold closing stroke, servo-proportional valves with a double stroke transducer and differential piston have been developed.

Company profile

ATOS spa

via alla Piana, 57
IT 21018 SESTO CALENDE VA
Tel.: +39 0331 922078
Fax: +39 0331 920005

These articles might be interesting for you
Patents Stimulate Innovation

Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.

Patents

Newsletter

Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?

Subscribe here

Subscribe here

Trade Names

You know the trade name but want to know the material manufacturer, type of polymer and delivery form? Search here!

Trade Names