Four-roller sheet bending machines

Details Four-roller sheet bending machines Four-roller sheet bending machines

1976-12-23

1977-09-20

Mehr, Milton S.

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflectors arranged to bend work longitudinally of...

72245, B21D 514

Patent

active

040488306

ABSTRACT:
The machine comprises a frame, a pair of nip rollers, two side-rollers disposed on respectively opposite sides of the nip rollers, and four pressure fluid operable devices each displaceably supporting a respective end portion of one of the side-rollers. Each pressure fluid operable device comprises a cylinder and a piston provided with a rod extending through one end portion of the respective cylinder to bear against the frame, the respective other end portion of each cylinder defining a housing provided with bearing means for the respective side-roller end portions and each cylinder being displaceably mounted in guide means.

REFERENCES:
patent: 2870817 (1959-01-01), Boldrini
patent: 3704616 (1972-12-01), Taira

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