| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce time and effort required for replacing a hot runner and a heater for heating the runner. <P>SOLUTION: A recess 21 for housing the hot runner 30 is formed on the back side of one mold 20 of a pair of molds joined separably from each other and having a cavity 29 formed between the molds. An opening 23 in which the runner and the heaters 32, 32a for heating the runner can be inserted, is formed at the position corresponding to the recess on a mounting platen 22 fixed to the back surface of the one mold, and the runner and the heaters inserted from the rear side into the recess through this opening can be fixed detachably to the one mold. The runner is preferred to be held and fixed between the one mold and a pressure receiving member 33 fixed detachably to the rear side of the mold. A plurality of the hot runners are adopted. A manifold for supplying a molten material to the runners may be superposed on the runner and housed in the recess. <P>COPYRIGHT: (C)2004,JPO |
