| 摘要 |
PURPOSE:To efficiently obtain a number of component parts by employing a specific injection mold when a molded article in which the pulled molds after molding cross in perpendicular surfaces is molded, thereby eliminating crossed pulling mold, injection molding in one step and largely reducing the manufacturing cost. CONSTITUTION:When a synthetic resin injection molded article of the shape having a projection or hole on the perpendicular surface and necessary to cross pulled molds after molding in the perpendicular surfaces such as a part which has a projection 3 on the vertical surface 1 and an upward dish-shaped hole 4 on the horizontal surface 2 is molded, one horizontal surface of the perpendicular surface, i.e., the horizontal surface 2 of the part formed with the hole 4 is so connected at 6 that the extended surface 5 of approx. twice the prescribed size with the thickness by half of the prescribed thickness and non-extended surface 7 are inverted bendably at the surface 5 at the center, thereby forming the flat surface, the mold is pulled at the vertical surface in the horizontal direction A, the mold is pulled vertically downwardly B at the horizontal surface, thereby removing the molded article, the extended surface 5 is inverted from the connection 6, and is superposed and bonded on the surface 7, thereby obtaining the desired component part. |
