Segmented forming apparatus for shaping inner tube surfaces

Details Segmented forming apparatus for shaping inner tube surfaces Segmented forming apparatus for shaping inner tube surfaces

B - Operations, Transporting

29

C

18/937

B29C 57/04 (2006.01)

Patent

CA 1077223

ABSTRACT OF THE DISCLOSURE: A forming apparatus comprising mold parts adapted to fit inside a tube to shape a groove or other profile therein. The parts are segments of the periphery arranged in at least two groups, such that the parts of one group alternate with the parts of the other group. The first group of parts is undercut to provide pockets in which the second group may rest when the mold parts are retracted. The first group is extended first, leaving spaces therebetween which are filled by the second group when they are extended. A mechanical actuation of the parts is disclosed in one embodiment and fluid-actuation is disclosed in a second embodiment.

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