Mandrel means

Details Mandrel means Mandrel means

B - Operations, Transporting

29

C

154/8.14

B29C 53/74 (2006.01) B26D 7/20 (2006.01) B29C 53/82 (2006.01) B29C 69/00 (2006.01)

Patent

CA 1330289

ABSTRACT (Fig. 7) "Mandrel Means" Mandrel means for forming tubular articles of an infinitely variable range of sizes by helical winding of strip material (25) around the mandrel means comprises a support surface defined by an endless belt (37) which extends around two support drums (36) the spacing of which is selectively variable. The mandrel means additionally comprises a belt guide assembly (38)(39) which preferably diverts the belt (37) to follow an inwardly extending path between the support drums (36) and thereby results in a peripheral discontinuity in the mandrel means support surface. The belt guide assembly may also incorporate a roller (39) to maintain tension in the belt (37) irrespective of the spacing of the support drums (36). Cutter means may be provided to cut a wound tubular article in the vicinity of the support surface discontinuity.

582761

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