Ventless segmented tire mold and method therefore

Details Ventless segmented tire mold and method therefore Ventless segmented tire mold and method therefore

B - Operations, Transporting

29

C

B29C 33/10 (2006.01) B29C 33/00 (2006.01) B29C 33/30 (2006.01) B29D 30/06 (2006.01)

Patent

CA 2145324

An apparatus for providing a vacuum in a segmented tire mold includes an upper sidewall assembly and lower sidewall assembly, a plurality of radially moveable tread mold segments operable with the upper sidewall assembly and lower sidewall assembly to define a tire mold cavity. A conical actuating ring assembly surrounds the tire mold segments and engages the mold segments to provide radial movement of the mold segments. The apparatus includes a first seal between the conical actuating ring assembly and the lower mold assembly, as well as a second seal between the conical actuating ring and the upper sidewall assembly, thereby sealing the space defined by the tire mold so that a vacuum can be drawn on the tire mold cavity upon the closing of the mold.

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