Metal deforming – By deflecting successively-presented portions of work during... – With feeding of discrete articles or orienting of work...
Patent
1986-06-04
1988-02-23
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
With feeding of discrete articles or orienting of work...
72171, 72173, 72175, B21D 514, B21D 5126
Patent
active
047262109
ABSTRACT:
Plane, rectangular sheets (10) are moved through between a driven bending roll (32) and a plurality of back-up rolls (34) and are bent round the bending roll (32) by these rolls and a plurality of pressure rolls (52, 56) disposed behind the bending roll (32) and back-up rolls (34). The almost completely rounded sheet (10) is bent resiliently away from the bending roll (32) by a deflecting member (62) as a result of which the front edge (10a) of the sheet is prevented from re-entering the gap between the bending roll (32) and the back-up rolls (34) before the rear edge (10b) of the sheet has travelled through this gap. Then the deflecting member (62) is moved back into its position of rest so that the front region of the sheet (10) springs back in the direction of the bending roll (32) and as a result is again gripped by the bending roll (32) and the back-up rolls (34) and moved through between them. When the front edge (10a) of the sheet (10) has reached the gap between the last two pressure rolls (56), all the pressure rolls (52, 56) are lifted. Then the sheet (10) is conveyed from a rounding station (31) to a positioning station (69). The sheet (10) continues to be rotated by the bending roll (32) until its front edge (10a) is arrested by catching levers (68). The rounded sheet (10) is now stripped axially off the bending roll (32).
REFERENCES:
patent: 2197906 (1940-04-01), Tucker
patent: 2309963 (1943-02-01), Krueger
patent: 2675849 (1954-04-01), Greenshields et al.
patent: 2698642 (1955-01-01), Malina
patent: 3738149 (1973-06-01), Archer
patent: 3934324 (1976-01-01), Hess et al.
Locher Josef
Weil Wolfgang
Combs E. Michael
Elpatronic AG
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