B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/74
B21D 5/00 (2006.01) B21D 5/16 (2006.01) B21D 39/02 (2006.01)
Patent
CA 1334496
The invention relates to apparatus for bending a margin flange which projects at an angle to a surface of a workpiece (3) against the surface. The apparatus includes a preliminary bending tool (5) which is mounted on a first tool holder (7) carried by a linkage mechanism (8-13) for movement in relation to a stand (1), which is stationary in relation to a support surface (2) on which the work- piece (3) is placed. The apparatus further includes a bend finishing tool (6) which is mounted on a second tool holder (14) carried by a parallelogram linkage mechanism (15-20) for movement in relation to the stand (1), and also a drive arrangement (21-24) which is drivingly connected to the two tool holders (7, 14). In accordance with the invention, the linkage mechanism between the first tool holder (7) and the stand (1) is a parallelogram linkage mechanism (8-13) which is so constructed that an imaginary connecting line between the stand-carried pivot axes (10, 11) of the links will extend substantially per- pendicularly to an imaginary connecting line between the stand-carried pivot axes (17, 18) of the parallelogram linkage mechanism (15-20) of the second tool holder (14). The drive arrangement includes one single drive member (21) which is connected between the stand (1) and a link (16) in the parallelogram linkage mechanism (15-20) of the second tool holder (14) such as to drive this second tool holder (14), and a drive link (28) which is connected between the parallelogram linkage mechanism (15-20) of the second tool holder (14) and the first tool holder (7) for driving this first tool holder.
593329
Abb Ab
Smart & Biggar
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