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MOULDING ELEMENT COMPRISING CUTTING MEANS FOR MOULDING AND VULCANIZING A TYRE TREAD AND METHOD OF MOULDING A TIRE TREAD USING THIS ELEMENT
MOULDING ELEMENT COMPRISING CUTTING MEANS FOR MOULDING AND VULCANIZING A TYRE TREAD AND METHOD OF MOULDING A TIRE TREAD USING THIS ELEMENT
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机译:包括用于胎面的成型和硫化的切割装置的成型元件以及使用该元件的胎面的成型方法
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摘要
Moulding element of a mould for moulding and vulcanizing a tyre tread, this tread comprising a tread surface intended to come into contact with the ground when the said tyre is rolling, this moulding element (1) comprising a moulding surface (3) intended to mould part of the tyre tread surface and a blade (5) of length and of height H intended to mould a sipe or a groove in the tread, this blade comprising a rounded end extending along the length of the blade in a direction of extension X. The moulding element comprises two cutting means (7)able to cut a cover layer (12) already applied to a green form (10) of the tyre and positioned on either side of the blade (5) at a certain distance from this blade, and each cutting means (7) comprises a cutting edge (8) extending in the direction of extension, this cutting edge making an acute angle α in a sectional drawing perpendicular to this direction of extension X able to cut the cover layer(12), the distance D between this cutting edge and the moulding surface (3) being lower than the height H of the blade (5).
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