| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a die casting device improving the quality of a casting by means of a sleeve, the sleeve including a heat media circuit for finely controlling the deformation of the sleeve (a bush and a molten metal feed tube) thereby being prevented from deformed and having a long life. Ž<P>SOLUTION: The casting device is provided in which a molten metal is fed to the sleeve with a double tube structure composed of an inner tube 21 having the heat medium circuit 24 and an outer tube 22 externally fitted to the inner tube, and is press-fitted to a die by a plunger tip 32 connected to a cylinder apparatus to produce a casting. In the casting device, holes 25 are provided which are perforated in the parallel direction to the axis at the inside of the wall face of the inner tube of the sleeve and which function as the flow passages of each heat medium, the heat medium circuit functioning as the flow passages of each heat medium are formed at the outer circumferential face of the inner tube, and the holes and the heat medium circuit are communicated via communication passages 26. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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