| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a die-casting die provided with a pressure pin carrying out secondary pressure application of a molten metal which reduces the cost of a bush holding the pressure pin and facilitates replacement work.SOLUTION: A bush holding hole 20 formed near a shaped surface 13 of a movable mold 12 is opened to the shaped surface 13. A bush 30 is tapered, with its front end outside diameter as the smallest diameter corresponding to the opening of the bush holding hole, and provided with a flange at its rear end and has a through hole 36 through which a pressure pin 5 is slidable. The inner peripheral surface of the bush holding hole is tapered so as to correspond to the outer shape of the bush and has a flange housing part receiving the flange. The bush 30 is diameter-reduced elastically and inserted from the opening of the bush holding hole to make held in the bush holding hole. Compared with a bush attached from the outside wall 14 of the movable mold 12, the bush is small-sized, achieves cost reduction and facilitates replacement work because of being removable from the opening of the shaped surface 13 on the parting surface side with e.g. a pench.</p> |
