EP 0216776 B1 19881019 - PRESSURE-ADJUSTING SYSTEM FOR A HYDRAULICALLY-OPERATED CLUTCH AND/OR BRAKE FOR THE DRIVE SHAFT OF A PRESS
Title (en)
PRESSURE-ADJUSTING SYSTEM FOR A HYDRAULICALLY-OPERATED CLUTCH AND/OR BRAKE FOR THE DRIVE SHAFT OF A PRESS
Publication
Application
Priority
EP 8400225 W 19840719
Abstract (en)
[origin: WO8600849A1] The pressure-adjusting system for controlling and damping the starting and braking operations, which is adapted to the requirements of press operation by means of an electric control system (37, 38, 39) according to the travel, time or angle, prevents at each cycle restrictions in the feed line (3) between the safety valve (4) of the press and the actuation cylinder (5) and allows an optimum pressure pattern by a parallel line (15) which is inserted therein, through which, depending on the setting position of a distribution valve (23) fitted inside, the pressure can be decreased or increased to a pre-selected degree without a considerable loss of time. A pressure-maintaining system, which is itself independent of the position of the safety valve of the press together with a storage unit (19) and topping-up system permits not only the pressure relief to the tank (1), but also the additional pressure or a removal from the supply line (3) directly after the switching over of the magnetic setting elements (31, 33, 35) controlling the valves (4, 23), which are triggered by signal emitters (39), which mark the various partial strokes of the press.
IPC 1-7
IPC 8 full level
B30B 15/10 (2006.01); B30B 15/14 (2006.01); B30B 15/16 (2006.01); F16D 48/02 (2006.01)
CPC (source: EP)
B30B 15/142 (2013.01)
Designated contracting state (EPC)
CH DE FR IT LI SE
DOCDB simple family (publication)
WO 8600849 A1 19860213; DE 3523163 A1 19860213; DE 3565651 D1 19881124; EP 0216776 A1 19870408; EP 0216776 B1 19881019; JP S61502735 A 19861127
DOCDB simple family (application)
EP 8500313 W 19850628; DE 3523163 A 19850628; DE 3565651 T 19850628; EP 85903265 A 19850628; JP 50303785 A 19850628