Expandable tire building drum

Details Expandable tire building drum Expandable tire building drum

B - Operations, Transporting

29

D

154/18.7

B29D 30/12 (2006.01) B29D 30/24 (2006.01)

Patent

CA 2006988

A segmental drum (10) has a plurality of circumferentially spaced drum segments (28) radially movable by a set of links (36) pivotally connected to a pair of axially movable hub assemblies (34) slidably mounted on a drum shaft (12). Each of the segments (28) has a cylindrical center portion (30) and end portions (32) with recesses providing pockets (68) for the tire bead portions. The links (36) are positioned between the end portions (32) providing space for large bead portions in the pockets (68) and at the same time the segments (28) are retractable to a small diameter to facilitate placing of a tire band (64) over the drum (10).

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