Apparatus for blowing cable and method therefor
AssigneeSumitomo Electric Industries, Ltd.
InventorsHiroaki Sano, Satoshi Tanaka, Kinji Taguchi
Life of this patent
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Abstract
An apparatus of the present invention for blowing a cable has a meandering detection section provided adjacent to a feeding rollers. The meandering detection section includes a straight passage for the cable passing therethrough, a recessed portion being arranged on a wall of the passage, and a detector detecting the cable meanderingly entering into the recessed portion. When there is no entering of the cable into the recessed portion, the cable is in the normal insertion condition. On the other hand, when the cable meanders at a short pitch entering deep into the recessed portion, the detector detects the abnormality of the insertion, and the feed speed is controlled to cancel the meandering of the cable.
Claims8
An apparatus for blowing a cable comprising:
- feeding means for feeding a cable into a tube;
- a meandering detection section provided adjacent to said feeding means, said meandering detection section having a straight passage for said cable passing therethrough, a recessed portion being arranged on a wall of said passage, and detecting means for detecting said cable meanderingly entering into said recessed portion;
- air flow supplying means for supplying an air flow into said passage and said tube;
- and
- prevention means for preventing the leak of the air flow from said apparatus.
A method for blowing a cable comprising:
- feeding a cable into a tube while supplying an air flow into said tube;
- arranging a straight passage having a recessed portion along a part of the tube into which the cable is inserted;
- detecting the entering of the cable into a meandering sensing point arranged within the recessed portion;
- and
- controlling a cable feed speed so that the cable is fed while maintaining a radius of curvature of the cable larger than a radius of an arc including front and rear ends of the recessed portion and the meandering detecting point.
Dependencies are inferred from the claim text.