Bending device for bending machine

Details Bending device for bending machine Bending device for bending machine

2007-11-27

2007-11-27

Banks, Derris H. (Department: 3725)

Metal deforming

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

By use of work-contacting wiper and moving, work-holding form

C072S159000, C072S453020

Reexamination Certificate

active

11335703

ABSTRACT:
A bending device for bending machine comprises a matrix (2), a countermatrix (6), and a die (7) able to prevent wrinkles. A countermatrix-holder support element (8) is fixed on an upper slide (10), which is slidable transversally to a workpiece T to be bent on a lower slide (11) movable in turn in the same direction of the upper slide (10), on a table (12). A first double-acting cylinder (19), being fixed on said lower slide (11), moves the countermatrix (6) toward and away from the workpiece (T); and a second double-acting cylinder (24) is slidable on the upper slide (10) and connected to a slider (25) on a counteracting rod (26) which is pivoted about an end of an arm-turning spindle (3), so that a force is exerted on the countermatrix-holder support element (8) in a projecting portion (23) thereof.

REFERENCES:
patent: 2638142 (1953-05-01), Green
patent: 3410125 (1968-11-01), Schmidt
patent: 4038853 (1977-08-01), Schwarze
patent: 126845 (1919-05-01), None

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