Method and device for forming tire's annular member
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United States of America Patent
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Dec 1, 2009
Grant Date -
Mar 16, 2006
app pub date -
May 23, 2005
filing date -
Sep 10, 2004
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Abstract
A method and device for manufacturing tire's annular member having a stretch mainly in radial direction by use of simple devices and simple way of pressing with high precision and easiness, as to produce tire product in high quality with no fluctuation of mass and/or uniformity, comprising: a first mold including a profile mold having an annular recess; a second mold which faces the first mold; and an extruder that continuously extrudes a rubber body into the recess of the profile mold. Concurrent with such extruding, the profile mold is rotated by one turn so as to charge the rubber body into the annular recess in a manner as annularly continuous. Then, the first and the second molds are brought abut each other so as to press the rubber body between the profile and second molds; thus shaping the rubber body into a shape defined by the profile mold.
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