| 摘要 |
PURPOSE:The titled detector in which a couple of air paths extending along the doffing bars are selectively opened with valves which are linked with the bobbin detector, thus ensuring automatically to watch the state of bobbins whether to be held or relased. CONSTITUTION:A switching valve is set at one end of a couple of air paths A1, A2, extending along the doffing bar 1 so that air is selectively fed, when the bobbins are held or released. Each bobbin holder 2 is equipped with a detector for knowing whether a bobbin is held or not 16 and valves V1-Vn that can open or shut the couple of air paths, linked with the detector 16 in operation and connected in series to the air paths every bobbin holder. The change in air pressure at the other ends of both air paths are detected by a couple of pressure-sensing switches. |
