PURPOSE: To improve the work efficiency by making a vacuum operation of the suction side of a compressor appear in a pipe in front of a wire guiding body, and making the core guiding body and its subsequent mandrel run in the pipe by its negative pressure.
CONSTITUTION: The suction side of a compressor 18 provided with a suction device, and a pipe 19a passing through a stopper 19 fitted into one end of a pipe conduit 2 are connected with a hose 20, etc., a vacuum operation of the suction side is made to appear in a pipe 2a in front of a wire guiding body 7, and the wire guiding body 7 and a mandrel 8 are made to run. As soon as the wire guiding body 7 reaches the end of the pipe conduit 2, the wire guiding body 7 presses the head part of a rod 25, a switch 26 is turned on, a buzzer of an alarm sounds and the lamp is lighted. In this way, such a danger as the stopper jumps out, and a time loss due to shunting for preventing the danger are eliminated, also the time required for a passing test is shortened, and the work efficiency is raised.
KAWAI KENJI
NAKAMURA KOUICHIROU
| JPS5679233A | 1981-06-29 |