Method and device for stitching multilayer products of green elastomeric material
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United States of America Patent
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May 4, 1993
Grant Date -
N/A
app pub date -
Feb 6, 1992
filing date -
Mar 26, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and device (1) for stitching multilayer products (2) of green elastomeric material, whereby an annular multilayer product (2) of green elastomeric material, particularly a product forming at least components of a tire (2), is placed inside a hollow annular body designed to house the multilayer product (2) and forming a stitching mold (5) having a concave inner surface (5a) contacting a first convex surface (34a) of the multilayer product (2) and negatively reproducing the final shape to be imparted on the multilayer product (2); a stitching device (24) being brought into contact, at a given pressure, with a second concave surface (34) of the multilayer product (2); and relative motion being produced between the stitching device (24) and the multilayer product (2), so as to cause the stitching device (24) to stitch the multilayer product (2) in contact with the inner surface (5a) of the stitching mold (5).
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