EP 3738757 A4 20210324 - PRESS MACHINE AND PRESS-WORKING METHOD
Title (en)
PRESS MACHINE AND PRESS-WORKING METHOD
Title (de)
PRESSMASCHINE UND PRESSBEARBEITUNGSVERFAHREN
Title (fr)
MACHINE DE PRESSE ET PROCÉDÉ DE TRAVAIL À LA PRESSE
Publication
Application
Priority
- JP 2018002471 A 20180111
- JP 2019000450 W 20190110
Abstract (en)
[origin: EP3738757A1] In a press machine, a ram (1) is vertically moved by rotations of an eccentric shaft. The press machine includes a striker housing (9) provided beneath the ram (1) and vertically moved together with the ram (1), a striker (3) vertically movable with respect to the striker housing (9), and a hold mechanism (11, 13, 15, 19, 21, 25) for holding the striker (3) at a lift-up position and a lift-down position. According to the press machine, press working can be done surely even when reciprocating rotations of the eccentric shaft are done in a vicinity of a rotational angle 90° (or 270°) of the eccentric shaft.
IPC 8 full level
B21D 28/20 (2006.01); B21D 28/34 (2006.01); B30B 1/26 (2006.01); B30B 15/00 (2006.01); B30B 15/06 (2006.01)
CPC (source: EP)
B21D 28/002 (2013.01); B30B 1/26 (2013.01); B30B 15/0035 (2013.01); B30B 15/06 (2013.01)
Citation (search report)
- [X] SU 1425093 A1 19880923 - YAKOVISHIN YAROSLAV N [SU], et al
- [X] SU 977194 A1 19821130 - VORONEZH PROIZV OB VYPUSK [SU]
- [A] JP 2002045995 A 20020212 - AMADA ENG CT CO LTD, et al
- [A] US 5131303 A 19920721 - WILSON KENNETH J [US], et al
- See references of WO 2019139064A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3738757 A1 20201118; EP 3738757 A4 20210324; EP 3738757 B1 20220518; JP 2019118952 A 20190722; JP 6550481 B2 20190724; WO 2019139064 A1 20190718
DOCDB simple family (application)
EP 19738962 A 20190110; JP 2018002471 A 20180111; JP 2019000450 W 20190110