A threaded mold decoupling system includes at least one unscrewing assembly configured to remove a molded article a threaded core of an injection mold, an elevator assembly, and a driving element disposed in operative communication with the at least one unscrewing assembly and with the elevator assembly. The driving element is configured to actuate the at least one unscrewing assembly to rotate a molded article about a longitudinal axis of the threaded core and actuate the elevator assembly to linearly translate the molded article along the longitudinal axis of the threaded core.

An apparatus and process for molding workpieces usable for consumer products. The workpieces may be injection molded with a cavity formed by a core pin and have an undercut, such as internal threads, in the cavity. The apparatus has a drive system with a stripper plate mounted for alternatingly forward and retracting axial movement. The stripper plate is axially driven and drives a stripper sleeve barrel cam and a core pin base barrel cam, each having respective cam followers. The respective motions of the cam followers are superimposed on a stripper sleeve insert, which drives a core pin sleeve. The core pin sleeve is subjected to responsive three-dimensional motion, allowing an internally threaded workpiece to be unscrewed from the core pin sleeve. The system does not require separate drives for the core pin sleeve and further allows each mold cavity/core pin combination in a mold half to be unique.

A threaded mold decoupling system includes at least one unscrewing assembly configured to remove a molded article a threaded core of an injection mold, an elevator assembly, and a driving element disposed in operative communication with the at least one unscrewing assembly and with the elevator assembly. The driving element is configured to actuate the at least one unscrewing assembly to rotate a molded article about a longitudinal axis of the threaded core and actuate the elevator assembly to linearly translate the molded article along the longitudinal axis of the threaded core.

The invention concerns an elastic element (100) made of a plastic material for a device (1) for dispensing fluids (L), comprising a tubular body (129) that develops around a main longitudinal axis (X), comprising a main portion that develops according to a spiral-shaped pattern and extends longitudinally between a first end portion (100a) and a second end portion (100b) opposite the first end portion (100a). One of the first and second end portions comprises a first projection (151) extending from the internal surface of the tubular body (129) towards the inner space defined by the tubular body (129). The invention furthermore concerns a method for making an elastic element (100) through an injection moulding process, a mould (200) for making an elastic element (100).

A threaded mold decoupling system includes at least one unscrewing assembly rotatably coupled to a mounting plate and disposed in proximity to a threaded core of an injection mold, an elevator assembly having a first elevator element rotatably coupled to the mounting plate and a second elevator element connected to a fixed plate, the fixed plate opposing the mounting plate, and a driving assembly disposed in operative communication with the at least one unscrewing assembly and with the first elevator element of the elevator assembly. The driving assembly is configured to actuate the at least one unscrewing assembly to rotate a molded article about a longitudinal axis of the threaded core and actuate the first elevator element relative to the second elevator element to linearly translate the mounting plate relative to the fixed plate and to translate the molded article along the longitudinal axis of the threaded core.

A threaded mold decoupling system includes at least one unscrewing assembly rotatably coupled to a mounting plate and disposed in proximity to a threaded core of an injection mold, an elevator assembly having a first elevator element rotatably coupled to the mounting plate and a second elevator element connected to a fixed plate, the fixed plate opposing the mounting plate, and a driving assembly disposed in operative communication with the at least one unscrewing assembly and with the first elevator element of the elevator assembly. The driving assembly is configured to actuate the at least one unscrewing assembly to rotate a molded article about a longitudinal axis of the threaded core and actuate the first elevator element relative to the second elevator element to linearly translate the mounting plate relative to the fixed plate and to translate the molded article along the longitudinal axis of the threaded core.