| 摘要 |
PURPOSE:To eliminate the need for providing a device that pulls out an H- shaped body from a tubular die and to simplify the whole structure, by extruding from a tubular die when inserting a formed H-shaped tablular body blank. CONSTITUTION:A blank 20 is compressed by pressing dies 15L, 15R, and a tubular body 50 of H-shaped sectional form having a partition wall 49 in the radial direction is formed. When the pressing dies 15L, 15R arrive at a specified. position, pressurized oil is supplied to rod side of hydraulic cylinders 13L, 13R and rods 14L, 14R are shortened, and the pressing dies 15L, 15R get out of a die 1. Then, pressurized oil is supplied to the head side of a hydraulic cylinder 8. A piston rod 9 is lengthened and the die 1 is moved to a blank inserting position. This movement is detected by a detecting switch 10 and the movement of the die is stopped. Pressurized oil is supplied to the head side of a hydraulic cylinder 23, and a new blank 20 on a V-block 21 is inserted into the die 1. The H- shaped tubular body 50 in the die 1 is extruded to the left by insertion of the blank 20, and falls onto a discharge chute 25. |
