EP 4176987 A1 20230510 - BOTTOM TOOL OF A PRESS BRAKE AND A PRESS BRAKE
Title (en)
BOTTOM TOOL OF A PRESS BRAKE AND A PRESS BRAKE
Title (de)
UNTERWERKZEUG EINER ABKANTPRESSE UND ABKANTPRESSE
Title (fr)
OUTIL INFÉRIEUR D'UNE PRESSE PLIEUSE ET PRESSE PLIEUSE
Publication
Application
Priority
FI 20216143 A 20211105
Abstract (en)
A bottom tool (7) of a press brake (1), comprising: a lower frame (8), two movable upper frames (9) arranged over the lower frame (8), between which upper frames there is an elongate slot (10) with a bending axis (15) about which a plate for press-brake bending is arranged to be bent during the press-brake bending, and a moving mechanism (12) for moving the upper frames (9) toward each other and away from each other to change the width of the slot (10). The moving mechanism (12) comprises, in connection with each upper frame (9), a first wedge row (13) with wedges (14) arranged one after another, their front faces (14.1) fastened to the upper frame (9) and their back faces (14.2) being inclined relative to the bending axis (15) of the slot (10), and a second wedge row (16) with wedges (17) arranged one after another, their front faces (17.1) being inclined relative to the bending axis (15) of the slot (10) and which front faces (17.1) are arranged against the back faces (14.2) of the wedges (14) of the first wedge row (13). The moving mechanism (12) comprises a moving device (18) for moving the second wedge rows (16) parallel to the bending axis (15). On the inclined back faces (14.2) of the wedges (14) of the first wedge rows (13) there are stepped ridges (21), and on the inclined front faces (17.1) of the wedges (17) of the second wedge rows (16) there are stepped ridges (21) arranged to be supported to the ridges (21) of the wedges (14) of the first wedge rows (13).
IPC 8 full level
B21D 5/02 (2006.01); B21D 37/02 (2006.01)
CPC (source: EP FI)
B21D 5/02 (2013.01 - EP); B21D 5/0209 (2013.01 - EP FI); B21D 5/0272 (2013.01 - FI); B21D 5/14 (2013.01 - FI); B21D 37/02 (2013.01 - EP)
Citation (search report)
- [Y] US 5305659 A 19940426 - DIEPERINK WILLEM [CH], et al
- [Y] US 5103665 A 19920414 - VAN MERKSTEIJN JACOBUS L [NL]
- [Y] US 6018979 A 20000201 - DAVIS STEPHEN B [US]
- [A] CN 201832897 U 20110518 - ANHUI LIANMENG MOULD IND CO LTD
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4176987 A1 20230510; FI 130847 B1 20240423; FI 20216143 A1 20230506
DOCDB simple family (application)
EP 22203721 A 20221026; FI 20216143 A 20211105