B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/189
B29D 30/00 (2006.01) B29D 30/32 (2006.01)
Patent
CA 2005148
A method of bending back a tire component, comprising a step in which the diameters of a pair of cylindrical bodies, whose diameters can be increased and decreased, are decreased to a minimum value to hold beads by the bodies, respectively, and the beads are set in prescribed positions on the component wound on a forming drum; a step in which the diameters of the bodies are increased to an intermediate value and the bladders of the drum are inflated so that the component is pinch-held at both the side edges thereof by the bladders and the bodies; a step in which the bodies are moved to positions located nearly outside the beads in the radial directions of the bodies, so that both the side edges of the component are moved outward in the radial directions of the bodies as the component remains in pressure contact with the beads near the side edges; and a step in which the diameters of the bodies are increased to a maximum value and the bodies are thereafter moved toward the longitudinally central portion of the drum so that the component is bent back at both the side edges thereof around the beads by the bodies, the bladders and the body of the drum.
Nishide Seiichiro
Ogawa Hiroshi
Sueyasu Masato
Sumiuchi Masaharu
Yonezawa Takeshi
Bridgestone Corporation
Swabey Ogilvy Renault
LandOfFree
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