Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1993-09-14
1994-12-27
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
72217, 72 7, 72 37, B21D 7022, B21D 716
Patent
active
053754476
ABSTRACT:
Method to carry out bends of a bundle (13) of bars having a diameter up to 32 mm. or more, the bars (13) being superimposed one on another in a plane substantially normal to the work platform, the bending machine (10) comprising; a bending unit (14) including an abutment roll (17) and a bending pin (16), retaining and clamping units (18) positioned as counterparts to each other in relation to the plane of positioning of the centerline of the bundle (13) of bars, the retaining and clamping units (18) being able to move vertically on inclined lateral guides (26), and a unit (11) including a gripper (12) for the controlled lengthwise displacement of the bundle (13) of bars, the retaining and clamping mechanism (18) being partly downwardly retracted during the steps of displacement of the bundle (13) of bars so as to provide a partial opening which enables the bundle (13) of bars to slide and be guided, the gripper (12) of the unit ( 11) performing the controlled lengthwise displacement of the bars being opened partly in at least one step of the bending cycle so as to keep the bundle (13) of bars superimposed one on another in a substantially vertical position.
REFERENCES:
patent: 4350033 (1982-09-01), Ishihara
patent: 4681210 (1987-07-01), Miki
patent: 4989429 (1991-02-01), Del Fabro et al.
patent: 4996866 (1991-03-01), Masera et al.
patent: 5199292 (1993-04-01), Del Fabro et al.
patent: 5228322 (1993-07-01), Del Fabro et al.
Patent Abstracts of Japan, vol. 9, No. 22, Jan. 1985; & JP-A-59-169-629 (Hitachi) Sep. 1984-Abstract.
Del Fabro Giorgio
Del Fabro Marcello
Crane Daniel C.
M.E.P. Macchine Elettroniche Piegatrici SpA
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