| 摘要 |
PURPOSE:To prevent damage of a fluid relay tool during operation by making formation of the fluid relay tool supplying a fluid to a cylinder for movement of an elevating body of a bar bending equipment with a closed room communicating with a fluid supply and discharge pipe and a cylindrical having a piston. CONSTITUTION:A bar 1 is supported by material supporting stands 9 and 9 and is passed through both supporting fittings 6 and 7 and a movable die frame 13. A central metal die 8 is moved along a guide rail 11 to directions of the arrows A and B by a cylinder 2 and bends the bar 1. If a flexible hose is used as a fluid relay tool of a fluid such as oil actuating the cylinder 2, the flexible hose is broken by contacting with parts of the equipment and the fluid leaks. To prevent it, a fixed cylindrical body 30A, a piston 30B moving in the cylindrical body 30A, and the closed room 30C compartmented by the piston 30B in the body 30A are joined with a fluid supply and discharge pipe 30D. A communicating hole 31 communicating with a fluid passage 32 of an elevating frame 23 is made at the other end of a piston rod 30E. The central metal die 8 for bending work is moved and bends the bar 1 using the above tools without use of a flexible hose.
|
