| 摘要 |
PURPOSE: An injection mold heating device is provided to reduce the total thickness of a mold by preventing the formation of thermal pattern due to sudden temperature increase. CONSTITUTION: An injection mold heating device comprises a square plate-shaped body(20) and a heating line(30). The main body is fixed adjacently to at least one cavity of the upper mold or lower mold. A plurality of heating line insertion holes(21) is formed in the inner side of the square plate-shaped body . The heating line is arranged along the heating line insertion hole. The heating line heats the domain of the cavity.
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