| 摘要 |
PURPOSE: To improve the positional accuracy of a slide surface, to prevent a short shot and to obtain the lateral size of a contact surface (or bringing into contact with a shutter. CONSTITUTION: The first mold 23 for molding a side surface is formed as an insert which is detachably assembled with a second mold 21 for molding the other site of the outer surface of a shell, and hence the air in a cavity is released from the boundary between the molds 23 and 21 out of the cavity. |
