EP 0106298 A3 19840718 - FOLDING MACHINE
Title (en)
FOLDING MACHINE
Publication
Application
Priority
DK 448382 A 19821011
Abstract (en)
[origin: US4594867A] A sheet bending machine wherein a sheet of metal is fixed between a clamping beam and a lower beam mounted with interchangeable folding rails and wherein the bending is performed by a bending beam being swung against the projecting part of the sheet metal. The interchangeable folding rails have markings, for example, protrusions or recesses on the rear edge which cooperate with a set of members for establishment of a steering code which determines the maximum permissible bending angle for the folding rail. The code may be in the nature of a series of contacts which are opened or closed, dependent on the folding rail being used, having a recess opposite them or not. The state of the contacts may, for example, be sensed by a cam disc which curves synchronically with the swing movement of the bending beam and successively opens the contacts which are connected in parallel above them, so that a current circuit is switched when both corresponding pair of contacts are opened.
IPC 1-7
IPC 8 full level
B21D 5/04 (2006.01)
CPC (source: EP US)
B21D 5/042 (2013.01 - EP US)
Citation (search report)
- [AD] DE 1076608 B 19600303 - REINHARDT & ADAM MASCHINEN UND
- [A] DE 2844509 A1 19790419 - KOMATSU MFG CO LTD
- [A] DE 2704399 A1 19780810 - FASTENRATH FASTI WERK
- [A] DE 6607061 U 19710114 - HERMANN RAFFELSIEFER FA [DE]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0106298 A2 19840425; EP 0106298 A3 19840718; EP 0106298 B1 19861210; AT E24129 T1 19861215; DE 3368212 D1 19870122; DK 148470 B 19850715; DK 148470 C 19851216; DK 448382 A 19830525; US 4594867 A 19860617
DOCDB simple family (application)
EP 83110085 A 19831008; AT 83110085 T 19831008; DE 3368212 T 19831008; DK 448382 A 19821011; US 53344183 A 19830919