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    • 2. 发明授权
    • TYRE BELT DRUM
    • 轮胎带鼓
    • EP1750927B1
    • 2008-11-19
    • EP05737455.5
    • 2005-04-08
    • VMI EPE HOLLAND B.V.
    • DE GRAAF, MartinDOPPENBERG, Evert
    • B29D30/24
    • B29D30/242B29L2030/005
    • Belt drum (1), particularly for shaping a belt layer and/or a tread layer or another tyre component provided with metal parts and the like into a circumferential whole, wherein the drum is rotatable about a centre line, comprising a number of support members (2) having a rigid support surface for the tyre component and situated at the circumference of the drum, wherein considered in a cross-sectional plane containing the centre line, the support members comprise middle support sections (7) and side support sections (8a, 8b) movably connected thereto, wherein the middle sections of the support members are moveable by first movement means (11, 12) between a first position, in which the respective support member forms a support surface that is parallel to the centre line, and at least one second position, in which a substantially convex support surface is formed by the respective support member, wherein the fBelt drum, particularly for shaping a belt layer and/or a tread layer or another tyre component provided with metal parts and the like into a circumferential whole, wherein the drum is rotatable about a centre line, comprising a number of support members having a rigid support surface for the tyre component and situated at the circumference of the drum, wherein considered in a cross-sectional plane containing the centre line, the support members comprise middle support sections and side support members are moveable by first movement means between a first position, in which the respective support member forms a support surface that is parallel to the centre line, and at least one second position, in which a substantially convex support surface is formed by the respective support member, wherein the first movement means are connected to the middle support sections in order to at least keep them parallel to the centre line in at least the one second position.
    • 4. 发明公开
    • Method and apparatus for making a tread-belt assembly
    • 用于制造Lauffläche-和带组件的方法和装置
    • EP1304212A3
    • 2003-10-15
    • EP02022323.6
    • 2002-10-08
    • THE GOODYEAR TIRE & RUBBER COMPANY
    • Risser, PhilippeSorce, FrancescoRoedseth, John Kolbjoern
    • B29D30/58
    • B29D30/58B29C69/002B29L2030/002B29L2030/005
    • Method and apparatus for making a tread-belt assembly for a pneumatic tire using a supply ramp to supply green rubber tread stock (325) for application on a substantially cylindrical green rubber belt package (322); advancing the tread stock (325) along the supply ramp (342) toward the belt package (322); positioning at least a final portion of the supply ramp substantially along a plane tangent to an outer circumference of the belt package; and applying the tread stock to the outer circumference by moving a leading cut end (328a) of the tread stock from the supply ramp to the belt package along the plane tangent to the outer circumference. The green rubber tread stock (325) is held from above for moving by inserting a plurality of transfer pins (458) downward into both edges of the green rubber tread stock such that each transfer pin is angled toward a closest laterally outside edge. The green rubber tread stock is secured for cutting; and is cut using an ultrasonically driven cutting blade (566) such that a wedge of space (529) is created between a back side (561 a) of the cutting blade (566) and the cut surface of an adjacent cut end (528a') of the green rubber tread stock (525), thereby preventing partial curing of the cut surface of green rubber. A cutting edge of the blade is moved along a first plane which coincides with the cut surface, but the back side of the cutting blade is coincident with a second plane which is angled forward from the first plane by an acute angle.