Apparatus for corrugating pipes

Details Apparatus for corrugating pipes Apparatus for corrugating pipes

1981-07-13

1984-03-13

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With tool surface orbiting around axis parallel to direction...

B21D 1504

Patent

active

044359683

ABSTRACT:
An apparatus for the corrugation of pipes of plastically deformable material, particularly of cable sheathings of metal, through which the pipe is continuously passed, comprising a corrugator rolling bushing having an inside surface with a deformation rib which is helical (when annular parallel corrugations are to be produced on the pipe) of more than one thread, or with at least one deformation rib acting on successive points viewed in the longitudinal direction of the pipe (when helical corrugations are to be produced in the pipe), the corrugator rolling bushing being supported for free rotation in a rotatable corrugator head, the inside diameter of the corrugator rolling bushing being larger than the diameter of the pipe to be corrugated and the corrugator rolling bushing being supported eccentrically to the pipe. The ratio of the inner diameter of the inside diameter defined formed by the deformation rib or ribs to the outside diameter of the corrugated pipe in the region of a corrugation valley thereof is 2:1, or an integral multiple thereof, with a maximum deviation of 5%.

REFERENCES:
patent: 3260088 (1966-07-01), Gruetter et al.
patent: 3572074 (1971-03-01), Holdup et al.
patent: 3656331 (1972-04-01), Kuypers et al.
patent: 3796078 (1974-03-01), Vaill

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