EP 0496882 A4 19921104 - OUTER LOAD CONTROLLER OF PRESS
Title (en)
OUTER LOAD CONTROLLER OF PRESS
Publication
Application
Priority
JP 18059889 A 19890714
Abstract (en)
[origin: WO9101215A1] An outer load controller of a press which is directed to obtaining high accuracy in pressure regulation and improving responsiveness. The controller includes a logic valve (5) which is connected between the hydraulic chamber (3c) of a hydraulic cylinder (3) disposed at each point (2) of an outer slide (1) and an overload protector (6) and which performs a relief function under overload, and a servo valve (16) controlled in accordance with a point generation load calculated at each descent position of the slide. An oil pressure inside the hydraulic chamber is variably controlled by the servo valve in the controller.
IPC 1-7
IPC 8 full level
B30B 1/26 (2006.01); B30B 15/22 (2006.01); B30B 15/28 (2006.01)
CPC (source: EP KR)
B30B 15/22 (2013.01 - EP KR); B30B 15/284 (2013.01 - EP)
Citation (search report)
See references of WO 9101215A1
Designated contracting state (EPC)
GB IT
DOCDB simple family (publication)
WO 9101215 A1 19910207; BR 9007524 A 19920623; EP 0496882 A1 19920805; EP 0496882 A4 19921104; JP H0347700 A 19910228; JP H0763879 B2 19950712; KR 920703323 A 19921217
DOCDB simple family (application)
JP 9000914 W 19900713; BR 9007524 A 19900713; EP 90910945 A 19900713; JP 18059889 A 19890714; KR 920700031 A 19920107