Injection nozzle for guiding molten masses

摘要

The injector nozzle for guiding melt mass in a plastic injection mold, comprises mold cavities to which the melt mass is introduced in an injection molding cycle, where the melt mass is introduced from a stem channel into two branch ducts, which are partially formed by a nozzle tip, which is equipped with a discharge opening over which the melt mass is introduced into the mold cavities. Each nozzle tip is positioned in a bearing seat and is mounted by two retaining elements, which form a second mounting surface (24) for the nozzle tip. The injector nozzle for guiding melt mass in a plastic injection mold, comprises mold cavities to which the melt mass is introduced in an injection molding cycle, where the melt mass is introduced from a stem channel into two branch ducts, which are partially formed by a nozzle tip, which is equipped with a discharge opening over which the melt mass is introduced into the mold cavities. Each nozzle tip is positioned in a bearing seat and is mounted by two retaining elements, which form a second mounting surface (24) for the nozzle tip. The nozzle tip is held between the first mounting surface of the bearing seat and the second bearing surface of the retaining element, where the nozzle tip is mounted with the retaining element. Each nozzle tip is held by a separate retaining element and is arranged in circular manner. The longitudinal axis of the nozzle tip is cut in circular manner or in a common middle point. The retaining elements are formed in sector-forming manner. A radial internally or externally lying end area of the retaining element is held by a central mounting means. Each nozzle tip is loadable by a tension element against a stop surface of the bearing seat. The tension element is movable along a first moving axis and the nozzle tip is movable through the movement of the tension element in a second movement direction. The tension element is equipped with a melt channel and partially forms the branch channel. A connection element is provided, which has a supply opening for the stem channel and forms an expansion balance device by which longitudinal changing of base body (11) is compensated. The connection element comprises an external surface, which forms a sliding seat with counter surface of the base body. The connection element and/or the base body is associated to a sealing.