| 摘要 |
PROBLEM TO BE SOLVED: To provide a sleeve for injection device and an injection device capable of constraining the lowering of temperature of a molding material in storing, high in durability, and to provide molding device for a die cast molding capable of efficiently manufacturing a high quality die cast molding. SOLUTION: The molding device for cold chamber die casting is provided with a feeding device, the injection device and a mold, The injection device comprises a cylindrical sleeve 21, and a plunger tip disposed inside the sleeve 21. The sleeve 21 is constituted by four layer construction of, from the inner peripheral side, a linear layer 25, a heating layer 26 incorporating a heating rod 40, a heat insulating layer 27, and a retaining layer 28. And by the retaining layer 28, the sleeve 21 as a whole constrains the expansion in the radial direction of the cross-section orthogonal to its longitudinal direction in a state that the heating layer 26 is heated.
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