Title:
【発明の名称】特に内部高圧成形法により作業するプレスの液圧式増圧ユニット
Document Type and Number:
Japanese Patent JPH11509479
Kind Code:
A
Abstract:
A hydraulic pressure boosting unit (11) is used in particular in a press operating according to the high inner pressure extrusion process. The hydraulic pressure boosting unit has a docking cylinder (10) with a docking piston that slides in a first cylinder chamber (15) and a docking piston rod (26) secured to the docking piston projects outwards through a housing head (20). The hydraulic pressure boosting unit has a pressure booster (11) with a primary piston (40) located in a second cylinder chamber (16) coaxial to the first cylinder chamber and separated from the first cylinder chamber by a housing bottom (17) and with a secondary piston (41) that plunges into a central axial bore (28) of the docking piston and docking piston rod. In order to generate high forces with the docking cylinder, only one side of the docking piston has a piston rod, namely the docking piston rod.
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Inventors:
Manfred brettner
Peter Kirmeier
Peter Kirmeier
Application Number:
JP50260597A
Publication Date:
August 24, 1999
Filing Date:
June 07, 1996
Export Citation:
Assignee:
Mannesmann Rexroth Actien Gezershaft
International Classes:
B21D26/02; B21D26/033; F15B11/028; B30B12/00; F15B3/00; (IPC1-7): B21D26/02; F15B11/028
Attorney, Agent or Firm:
Toshio Yano (3 outside)