Title:
駆動装置、特にプラスチック射出成形機の閉鎖ユニット、射出ユニット又はエジェクタ用の駆動装置
Document Type and Number:
Japanese Patent JP2004505796
Kind Code:
A
Abstract:
A drive mechanism for an injection molding machine has an output element that is moveable in a straight line and an electric motor drive unit having an electric motor and a piston-cylinder unit which has a first piston-cylinder unit in the force chain between the output element of the electric-motor drive unit and the movable component. A rapid actuating movement is possible and, the action of a high force is also achievable wherein a second piston-cylinder unit and a third piston-cylinder unit. A fluidic connection between the first cylinder chamber and the second cylinder chamber is controllable via a valve. When the valve is open, the second hydraulic piston displaces pressurized liquid from the second cylinder chamber into the first cylinder chamber, to actuate the movable component and, when the valve is closed, the third hydraulic piston displaces pressurized liquid from the third cylinder chamber into the first cylinder chamber to exert a high force on the movable component.
Inventors:
Jörg Duntrgrabber
Application Number:
JP2002517289A
Publication Date:
February 26, 2004
Filing Date:
July 20, 2001
Export Citation:
Assignee:
Bosch Rexroth AG
International Classes:
F15B3/00; B29C45/07; B29C45/17; B29C45/40; B29C45/50; B29C45/67; B29C45/68; B29C45/70; B29C45/82; (IPC1-7): B29C45/17; B29C45/82; F15B3/00
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel