| 摘要 |
PURPOSE:To easily form slit for narrowing a beam of the detecting light. CONSTITUTION:A first and a second split molds 10, 11 are respectively formed with cavities 10a, 11a, and the melted resin is filled in the cavities 10a, 11a, and solidified to form a main body case 2 of a photoelectric switch. Furthermore, the first split mold 10 is formed with a slide core 12, and a slit 2e is formed in the main body case 2 by a pin 13 installed in the slide core 12. A slit at a different diameter is formed by preparing plural kinds of pin 13 and selectively installing the pin 13 in the slide core 12. |
