| 摘要 |
PURPOSE:To permit to simplify the assembled molding of the airflow direction regulating device made of synthetic resin by a method wherein a part of the rum section of a fixed blade for an outer frame is employed at a part of the surface of a cavity for a mold, molding a movable blade, in order to mold one part of the rim section of the movable blade. CONSTITUTION:The outer frame 1, molded by injection molding of ABS resin 2 beforehand, is inserted and the molds A, B are closed. The molds A, B are provided with a cavity C for molding respective movable blades 11 in parallel to the outer frame 1 while the notched section 8 of respective fixed blades 6 of the outer frame 1 and the hole 4 for a shaft on an outer wall 3 are employed for the part of the cavity surface of the molds A, B. Subsequently, PP resin 12, bad in bonding property with respect to the resin 2 and having a melting point lower than the same of the resin 2, is injected into respective cavities C through a gate 12 to mold respective blades 11. In this case, the shaft 14, hinge sections 19, a cooperating rod 20 are molded integrally with the blades 11. According to this method, the assembled molding of desired airflow direction regulating device may be simplified. |
