Applying A Tread On Green Tire Essay

978 Words Nov 25th, 2014 4 Pages
Vulcanizing mold
To form a tread on green tire, a mold must mold and melt the rubber. The inside circumference of the circular tread face part of the mold that will be in contact where the tread of the green tire will be is a negative shape of the tread to be on that green tire to be shaped.
The outside of the circular tread face is in contact with the pre-heating or curing molds inside circumference. The tread shapes on the tire is formed by ribs and/or lugs on the inside of the circular tread face. The circular tread face has holes to let the gasses produced by the tire out. The circular tread face is supported in the pre-heating or curing molds inside circumference. The gas vents on the circular tread face are nearly aligned with the pre-heating or curing mold support gas vents. Since the pre-heat and curing mold as many parts the space between parts are part of the vents. There are detached block on the outside circumference circular tread face. There is a plug in the circular tread face that is held at the outside circumference of the circular tread face and extend to the inside of the gas vent in circular tread face. The plug extends or retreats depending on the temperature. At molding temperature the plug seals the gas vents and at colder temperature the gas can flow through the vents. The pre-heating and curing mold as vents formed in it. Those vents are…

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