| 摘要 |
An injection molding apparatus is provided to insert or eject upper and lower chases having upper and lower cores respectively in/from upper and lower plates using a sliding method so as to replace the cores easily to simplify a manufacturing process, and to reduce manufacturing costs. An injection molding apparatus comprises lower and upper fixed plates(10,60), lower and upper plates(20,70), lower and upper chases(40,80), lower and upper cores(50,90). The lower plate has a plurality of guide holes(21). A lower core mounted space is formed on the lower chase. The upper plate has a plurality of guide rods(71) inserted in the guide holes. An upper core mounted space is formed on the upper chase. The upper core is detached from the upper core mounted space. The upper chase is combined with the upper plate by more than two upper chase fixing units. The lower chase is combined with the lower plate by more than two lower chase fixing units.
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