Mold and molding element for molding an incision in a rubber article
AssigneeMichelin Recherche et Technique S.A.
InventorsJosé Merino Lopez, Jean Claude Kaczorwski, Pascal Auxerre
Life of this patent
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Abstract
A molding element designed to mold a cut in a rubber article, such as a tire, and in which the cut has a geometry of rotation on an axis XX′. The molding element has a head extended by a molding part intended to project into the molded surface in order to mold at least one cut in the rubber article. The head is mounted for rotation in a mold member, and the head contains at least one circular cylinder of axis XX′ defining the main axis of the molding element, and cooperates with mold member in order to permit a rotation on XX′ relative to the mold, when the molding part of the molding element is subjected either to a force acting in direction XX′ or to a torque about the same direction XX′.
Claims19
A mold member for molding a part of a tire tread, said mold member being movable in a molding/mold stripping direction and comprising a molding surface for molding a surface of said tread, a seat provided in the mold member and at least one molding element for molding at least one incision in said tread, said molding element having two connected parts, a first part forming the molding part of the molding element and projecting on the molding surface in order to mold a cut in the tire and a second part rotatable about an axis XX′ identical or close to the molding/mold stripping direction and intended to be mounted in the seat provided in the mold member, said mold member being characterized in that it is provided with means of mounting the second part of the molding element in the seat provided in the mold, said mounting means allowing rotation of the molding element on its axis XX′ during at least the mold stripping phase.
A molding element arranged to be installed on a mold member for molding a tread, said mold member being intended to make at least one incision in said tread, and said mold member being capable of being driven in a molding and/or mold stripping motion in a predetermined direction, the molding element comprising:
- a body equipped with a head extended by a molding part, said molding part being intended to project from the molding surface of the mold member in order to mold at least one cut in a rubber compound tread,
- the head having at least one circular cylinder of axis XX′ defining the main axis of the molding element, and means of mounting said molding element in the mold member, said means cooperating with said member in order to permit a rotation of the head about XX′ relative to the mold, when the molding part of the molding element is subjected either to a force acting in direction XX′ or to a torque about the same direction XX′, while ensuring retaining of the molding element in direction XX′.
Dependencies are inferred from the claim text.