| 摘要 |
Apparatus and process for the continuous manufacture of a waveguide having a helically wound conductor with an exterior sheath extruded thereover in which a forming machine which can produce only a limited length of helix is stopped intermittently for the replacement of the conductor storage reels thereof but the extrusion press operates continuously. During the time that both the forming machine and the press are operating normally, they are maintained a substantially fixed distance apart, but during the time the forming machine is stopped, the extrusion press is moved toward the forming machine at a rate permitting uniform extrusion of the sheath on the previously formed helix. After the forming machine is restarted its forming speed is increased as the press is moved away therefrom until it reaches substantially its original spacing from the forming machine at which time the forming speed is returned to normal. |
