| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection mold capable of preventing the generation of welding even if the valve of a second gate is opened before the second gate is perfectly filled with the resin flowing into a cavity from a first gate in the injection molding of a large-sized part by a cascade construction method. SOLUTION: By connecting tab gates Gs1, Gs2 and valve gates 4b, 4c constituting a second gate by the runners 5 provided to the mating surface on the side opposite to the side provided with the tub gates Gs1, Gs2, the runner 5 reduces the confluent angle of the flowing resin and the resin in the tab gates Gs1, Gs2 to avoid the front collision of the resin flow tips. |
