FIELD: machine building.
SUBSTANCE: proposed female die comprises: wheel metal rim 16, inner ring 19, bottom and top face covers 18 and 9, and outer ring to shape tread patter. Composite outer ring consists of smaller thickness rings 2-6 intended for moulding tread pattern ledges and rings 11-14 for moulding tread pattern lengthwise grooves. Aforesaid rings are assembled of segments and pressed between top and bottom covers 18, 9 by coupling studs or long bolts. Ring segments have circular grooves that allow varying treat pattern by turning said rings relative to female die central axis.
EFFECT: higher quality of production.
3 dwg
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