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).

The mold apparatus (1) includes: the stationary mold (12) of the mold main body (2) that molds the main body part (81); the rotary core (20) that molds the undercut part (82) and mold releases by rotationally moving in a direction separating from the undercut part (82); and the restricting core (40) that restricts movement of the rotary core (20) sandwiching between the stationary mold (12) and rotary core (20) during molding, and releases restriction of the rotary core (20) by moving in a direction exiting from between the stationary mold (12) and rotary core (20) during mold release of the rotary core (20) from the undercut part (82).

Methods and systems for forming an injection molded part. The system includes a mold cavity housing having a first end and a second end and an opening passing through the housing from the first end to the second end, a lifter member having a first end and a second end, a plurality of attachment formation members, and a groove formed in an outside surface of the lifter member, a lifter guide having a guide member, wherein the rotary lifter translates within the opening in the mold cavity housing and rotates as the guide member travels along the groove in the lifter member.

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.

An injection-molding apparatus for article formation. The injection-molding apparatus includes a single mold base supporting at least one grouping of a plurality of shape-forming configuration sets. Each set is shaped for forming one layer of a multilayered article comprising an asymmetric surface. Each set may include at least one cavity which retains each article region formed by the preceding injection-molding shot(s). The single mold base includes an internal movable part which moves within the single mold base with respect to a stationary part such that relative positions of the shape-forming configurations are advanced for each set to form a subsequent article region in the cavities. Each subsequent shot may be prior to full cooling of the article region formed in the previous shot.

A first rotation controller that rotates a rotary table by feedback control based on a rotation amount detected by a rotation amount detection unit and a second rotation controller that rotates the rotary table by the feedback control based on a distance detected by a distance detection unit are included and rotation control by the first rotation controller is switched to that by the second rotation controller at a predetermined rotation angle.

In an injection molding mold, a cavity to shape an impeller is formed on a cavity piece. The cavity piece includes an inner piece portion on which the cavity is formed, and a support piece portion turnably supporting the inner piece portion and movably mounted on a fixed-side mold. This cavity piece is moved to a first mold separating position together with a movable-side mold. The inner piece portion is formed such that a spiral pattern groove to shape a plurality of spiral pattern vanes of the impeller constitutes a part of the cavity. When the movable-side mold separates from the cavity piece at the first mold separating position, the impeller moves integrally with the movable-side mold and separates from the inner piece portion while turning the inner piece portion such that the vane slides and moves inside the spiral pattern groove of the inner piece portion.

The invention relates to a retaining device (5) for a rotatable center block (17) in an injection molding device (1), comprising a lower rotary plate (14) rotatable about an axis of rotation (13) and driven by a motor (15), the lower rotary plate being used for retaining the rotatable center block (17). The retaining device (5) comprises a lower cross member (7), which is mounted movably in the longitudinal direction (x) on guide rails (9) while supported on a machine bed of the injection molding device by means of first bearing blocks (8). The retaining device (5) can have two bearing blocks (16), by means of which the lower cross member (7) is supported in the circumferential direction relative to lower beams (4) of the injection molding device. For a further increase in efficiency, the center block (17) has a main body made of a material of lower density than a coupling plate (23) operatively connected thereto.

A method of producing an assembled product includes a first step of clamping a mold including a first unit and a second unit, a second step of forming the plurality of parts by injecting molten resin into each of a plurality of cavities, a third step of opening the mold, and a fourth step of respectively opposing the plurality of parts held by the first unit in the third step to corresponding assembling portions of the second unit. The first through fourth steps are repetitively performed, and in the first step, the plurality of parts held by the first unit are supplied to the corresponding assembling portions, and the plurality of cavities are defined by first forming portions of the first unit and second forming portions of the second unit.

An apparatus for molding a lens for a vehicle lamp may include: a lower mold including a first lower mold part for molding a primary injection-molded product and a second lower mold part for molding a secondary injection-molded product; a rotating mold including a first middle mold part for molding the middle part of the primary injection-molded product and a second middle mold part for molding the middle part of the secondary injection-molded product; a first movement prevention stopper fixing the primary injection-molded product; a second movement prevention stopper fixing the primary injection-molded product; a movement/rotation device moving the rotating mold and rotating the rotating mold; and an upper mold including a first upper mold part for molding the upper part of the primary injection-molded product and a second upper mold part for molding the upper part of the secondary injection-molded product.