| 摘要 |
A method and a mold for forming an airbag cover is described in which the smoothness in a region around a tear line is ensured. A mold 4 includes a core member 5 and a cavity member 6, and a resin material is supplied to a cavity 7 between the core member 5 and the cavity member 6. The core member 5 has a plate-shaped blade block 8 that functions as a protruding piece for forming a tear line 2. The blade block 8 has openings 10 for allowing the resin material to flow from one side of the blade block 8 to the other side. An edged portion 11 is provided at the top edge of each opening 10 so as to point downward. The blade block 8 is connected to a cylinder device with a shaft, and can move inward and outward. Injection of the resin material is started after the blade block 8 is moved inward to the limit thereof. After the injection of the resin material, the blade block 8 is moved outward to form the tear line 2. Then, the airbag cover 1 is taken out from the mold 4 (Fig. 4) . |
