| 摘要 |
1,136,061. Insulating pipes. SVENSKA METALLVERKEN A.B. 28 Sept., 1966 [11 Oct., 1965], No. 43381/66. Heading F2P. A length of piping 4 is continuously advanced together with strips of insulating material 5, 6 through a device or matrix 1 which compresses the insulating material around the circumference of the piping, the insulating material being secured to said piping as soon as the same leaves the matrix by a helical winding of overlapping tape 13, the piping being discharged from the matrix while the tape is wound at the same time on to a tubular portion 3 of the matrix to permit the loops of tape being drawn off the tubular portion by the advancing insulating material. The matrix is provided with guides 10, 11, a converging cone 2 and the tubular part 3; the latter may be sharp-edged and slightly conical in the direction of tube feeding. The tape roll 12, which may be braked to tension the tape, is arranged coaxially with the tubing, the tape passing over a roller 14 and a guide 15. The completed pipe is fed by upper and lower devices 18, 22 both of which are adjustable vertically. The upper conveyer belt 18 and the rotating plate 46 are driven from a common motor 32. The insulating material 5, 6 may comprise a mineral wool, the tape may be of fabric, paper, metal foil or metal fabrics and may be self-adhesive or an adhesive may be applied as it is wound. The taped insulated piping may be coated with a moisture repelling, insulating material, e.g. plastics. |
