| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve productivity by substantially applying plastic processing to the whole of the molding of a hose mouthpiece. <P>SOLUTION: Heads 34 to 37 are formed into prescribed forms by applying processing such as hole formation by the plastic processing to a spherical head, a tubular nipple 12 is formed by applying the plastic processing to a protrusion 11, and an axial hole 13 of the nipple penetrates to reach a hole 36a of the nipple. Deformation such as the extension of a neck in a direction in which the head is separated from a socket is permitted, deformation other than the deformation is suppressed, and an intermediate molded article is held in a mold. The axial hole 13 continuous from the nipple 12 is formed so as to penetrate the neck 32 which is reduced in diameter compared with the socket 41, and the hole formation is performed while extruding a material of the neck 32, whereby the hole formation through the socket 41 to the head becomes possible by the plastic processing. Furthermore, the nipple and the axial hole are formed after molding the heads, and the heads are prevented from being deformed at the formation of the axial hole. <P>COPYRIGHT: (C)2012,JPO&INPIT |
