| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection mold structure which can suppress gate residue in a gate cut at a low level.SOLUTION: In a pin-gate type injection mold, a gate tip port 14a of a pin gate 14 for injection of a resin into a cavity 16 is partitioned into a plurality of gate ports 14c and 14d with a partition plate 13. The partition plate 13 is plate-like, passes through the central part O of the gate tip port 14a and is composed of a plate partitioning the surrounding of the central part O at equal angles. The partition plate 13 is large in plate thickness t on the side facing the cavity 16, decreases in plate thickness away from the cavity 16 and is inclined. In the end surface on the side of the partition plate 13 facing the cavity 16, a protrusion 13a having a tip sharpened at an acute-angle is provided. |
