| 摘要 |
PURPOSE: A link device is provided which is installed at a press for forming the metal sheet into a pipe shape by punching a metal sheet so that the link device is moved integrally along with a driving source of the press and inserts core pipe into a 'U' character shaped workpiece and draws out the core pipe from the workpiece. CONSTITUTION: In a press machine comprising a semicircular warping die, a core pipe(287) inserted into a 'U' character shaped workpiece formed in a certain curvature and drawn out from the 'U' character shaped workpiece, and a semicircular warping punch to bend the 'U' character shaped workpiece in a pipe shape, the press device for passing a pipe shaped bracket comprises a fixed link(281) which is installed on an upper surface of a lower base, and which is hinge fixed by a first pin(284) so that the fixed link(281) is rotationally moved; a sliding block(283) which is installed on an upper surface of the lower base, slidingly moved and connected to the core pipe(287) to the side of the warping die; an operating link(282) connected to the fixed link(281) by a second pin(285) and connected to the sliding block(283) by a third pin(286); an upper link driver(110) adhered to a lower surface of the upper base to insert the core pipe(287) into the sliding block(283) by pressing the second pin(285); and a drawing unit for drawing out the core pipe(287).
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