Patent ID: 6808376
Filing Date: 2004-10-26
Classification: B29C,B29D,B29L,Y10S

Abstract:
In a vulcanization mold for the manufacture of technical rubber products, in particular for the manufacture of vehicle tires, the mold comprising a plurality of vent bores in each of which a blocking member (1) is mounted which at least substantially blocks the penetration of (tire) blank material, each said blocking member having a central body (2) which can be fixed in force-transmitting manner in the respective vent bore, and also a sealing part (3) coupled to the central body (2) and having a surface region (4) disposed towards the inner side of the mold which is provided with at least one aperture (7) and which, together with the central body (2), forms at least one angled flow path for the air following the aperture (7),the improvement wherein the central body (2) of each blocking member is fixed in the respective vent bore, on the one hand, by clamping ribs (5) provided at its outer periphery and cooperating with the bore wall and, on the other hand, by blocking elements (9) which are formed on spring limbs (10) of the sealing part (3) provided for the coupling to the central body (2), said blocking elements having a barb function with respect to a wall of the vent bore (21) in the direction of the inner side of the mold.