| 摘要 |
PROBLEM TO BE SOLVED: To provide a new type of dynamic balancer which can make the weight of the dynamic balancer variable according to the weight of a mold. SOLUTION: The dynamic balancer 10 is equipped with a case 11, in which a hollow portion 11a is formed, and a pair of moving walls 121 and 122, which are placed in the hollow portion 11a. An injection chamber 14 is provided in the case 11 to inject a fluid W into the pair of moving walls 121 and 122. One end of coiled springs 13 and 13 is fastened to the case 11, and the other end is fastened to the outer face of the pair of moving walls 121 and 122. One end of piping 16 is connected to a tank 17 and the other end is connected to the injection chamber 14. When the fluid W stored in the tank 17 is injected into the injection chamber 14 by a pump 18, the pressure in the injection chamber 14 increases so that the moving walls 121 and 122 are moved to expand. By this way, the weight of the dynamic balancer 10 is adjusted to the weight of a slide 5 mounted on the mold 6. COPYRIGHT: (C)2008,JPO&INPIT
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