| 摘要 |
<p>The present invention relates to a device for feeding optical fibres into a tubular element, duct, or the like. For ease of handling, the fibre feeding device includes a channel (26) into which there can be inserted a bar (22) which includes one or more longitudinally extending blow passages (29), where each passage has a cross-section that is adapted to a given type of optical fibre. Holes (25, 27) are provided in the bottom surface of the channel close to its respective rear and front edges, for delivering and removing compressed air used to advance the optical fibre. With the optical fibre placed in the blow passage in the bar, the optical fibre in said passage will be advanced when compressed air is delivered through the holes in the rear edge of the bar, by virtue of the blow passage functioning as a Venturi tube where a leakage flow exerts an ejector effect on the optical fibre to promote advancement of said fibre through the blow passage.</p> |
