PURPOSE: To detect the anomaly of a hog-ringer by installing a photoelectric switch for detecting the reflection light or transmission light of the projected light towards the C-shaped ring nipped at the top edge of a yoke.
CONSTITUTION: An approach switch S1 which is operated by the approach of a weak magnetic body which is constituted so that a piston 13 consisting of a ferromagnetic body moves in reciprocation is installed, and a photoelectric switch S2 for detecting the reflection light or the transmission light at the projected light is installed towards a C-shaped ring 17 which is installed on a magazine 20. Further, a photoelectrical switch S3 for detecting the reflection light or transmission light of the projected light is installed towards the C-shaped ring 17 which is nipped at the top edge of a yoke 8. Accordingly, the remaining quantity of the C-shaped rings 17 installed on a magazine 20 and the fact that the C-shaped ring 17 is nipped at the top edge of the yoke 8, or the anomaly of a hog ringer can be detected.
| JP3850979 | PISTON PIN PRESS-IN DEVICE |
| JPH06312323 | HOLLOW MOVABLE SHAFT |
| WO/2014/112195 | METHOD AND DEVICE FOR MOUNTING PISTON |
ISHIZU TAKAYASU
MURAI KEIJI
YOKOTA IND