| 摘要 |
PROBLEM TO BE SOLVED: To provide a counter matrix which is sturdy and inexpensive, but not large in size. SOLUTION: A bending device for bending machine comprises a matrix (2), a counter matrix (6), and a die (7) able to prevent wrinkles. A counter matrix holder support element (8) is fixed to an upper slide (10), which is slidable transversally to a workpiece T to be bent on a lower slide (11). The lower slide (11) is 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 the lower slide (11), moves the counter matrix (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 counter matrix holder support element (8) in a projecting portion (23) thereof. COPYRIGHT: (C)2006,JPO&NCIPI
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