A device for limiting or keeping constant a quantity of fluid flowing therethrough, includes: a housing with a front chamber and a rear chamber; a partition arranged in the housing with two or more openings; and a flow limiting element arranged in one or both openings. The flow limiting element includes a housing provided with an inlet, an outlet and a throughflow opening; and a resilient plate-like valve element mounted in the housing, substantially able to close the throughflow opening by resilient movement in the direction of a valve seat arranged in the housing adjacently of the throughflow opening. The valve element is fixed on one side and can move resiliently on the opposite side in the direction of the valve seat. A mould produces one or more injection-moulded products. The injection-moulded product is a flow limiter for limiting the force of the flow of a fluid flowing therethrough.

Provided is a resin molding apparatus that can suppress a molding problem caused by a variation in a thickness of an object to be molded or suppress a variation in a thickness of a resin molded part, and can perform a mold releasing operation. A resin molding apparatus includes: a molding mold having one mold and the other mold; one mold wedge mechanism; and one mold cavity block driving mechanism. In a state that a height position of one mold cavity block is set using the one mold cavity block driving mechanism and a position in a direction away from the other mold in the one mold cavity block having been moved to the height position is fixed to be limited using the one mold wedge mechanism, a mold releasing operation can be performed using the one mold wedge mechanism and the one mold cavity block driving mechanism.

An injection-molded container or shell, in particular a suitcase shell made of plastic, A) is made of foamed plastic and has gas channels and/or B) is made using physically or chemically foamed plastic and/or a plastic mixed with hollow fillers and/or C) is integrally made with wheel mounting axles and/or extendable rod buffers and/or extendable rod cavities.

A housing having a rotary axis and configured to support at least one radially projecting cutting component that effects cutting as the housing is turned around the rotary axis. The housing has a first housing part with a first wall and a plurality of discrete circumferentially spaced cavities in the first wall and each having a volume. The volumes of at least a first and second of the cavities respectively at first and second locations are different and strategically selected to cause a mass distribution on the housing that contributes to improved dynamic balancing of the housing as the housing is turned around the rotary axis.

An apparatus for forming a first component making up at least a part of a housing on a trimmer head and a method of using the apparatus. The housing has a rotary axis and is configured to support at least one radially projecting cutting component. The first component has a central axis. A forming unit defines at least one cavity within which a moldable material is confined to produce at least a part of a wall on the first component that extends around the rotary axis. The forming unit is configured to allow selective controlling of a quantity of a moldable material introduced into a first discrete subvolume at a first location in the one cavity to thereby allow selective controlling of a mass of a portion of the at least part of the wall formed by the moldable material in the one cavity at the first location to facilitate dynamic balancing of the housing, within which the first component is incorporated, with respect to the rotary axis.

A mould for manufacturing three-dimensional items, comprising a body; a lid configured to close the body; and incorporated closing and openings configured to keep the body and the lid joined during the movement thereof is disclosed. A machine for manufacturing three-dimensional items, comprising a receiving module configured to receive the mould; a conditioning module configured to receive the mould from the receiving module and act on the incorporated closing and openings in order to separate the lid from the body; and a handling module configured to receive the body from the conditioning module and enable the placement of the components of the item to be manufactured. A method for manufacturing three-dimensional items and manufacturing plant associated with the machine.

Molding assemblies and molding processes are disclosed. The molding assemblies are for producing a product and include a first subassembly and a second subassembly for the producing of the product. The first subassembly includes a cavity insert arrangement corresponding with the design of the product, a movable insert abutting the cavity insert arrangement, and rail members securing the movable insert with interlocking features at a specific location, the specific location being one of multiple movable insert positions. The molding process includes molding a first product with the movable insert and the additional movable insert being positioned at a first movable insert portion, removing the subassembly from the second subassembly, re-positioning the movable insert and the additional movable insert to a second movable insert position, and molding a second product with the movable insert and the additional movable insert being positioned at the second movable insert portion.

A tool insert for the production of an object by an injection molding method, wherein the injection molding tool includes an insert frame and at least one lamination assembly having a plurality of individual laminations, wherein the at least one lamination assembly is inserted in the insert frame. In further aspects, the invention relates to a method and a system for producing an object having curved surfaces using the tool insert, and to an object which can be produced with the method. The system for producing an object comprises a tool insert and a sliding element. A basic idea of the invention is that curved surfaces can be introduced into the object in that the insert frame has curved surfaces and/or at least one distortion cushion is arranged between the insert frame and the at least one lamination assembly.

An apparatus includes a mold. The mold has a first mold part with a first interior surface and a second mold part with a second interior surface. The apparatus additionally includes a movable member disposed proximate the mold. The movable member is movable between a first position and a second position. In the first position the movable member cooperates with the first interior surface and second interior surface to define a first mold cavity, and in the second position the movable member cooperates with the first interior surface and second interior surface to define a second mold cavity. The second mold cavity has a shape distinct from the first mold cavity.

A device for injection-molding and for overmolding objects has an upper element and a lower element, which surround a contiguous volume consisting of a filling space for holding the object and casting material and a sprue for holding casting material. The upper element is movable in relation to the lower element. A piston is arranged within the upper element in an integrated manner and is movable relative to the upper element. The position of the piston can be varied in accordance with a dimension of the object in an axial direction and the piston has a protrusion for changing a volume as filling amount balancing of the casting material within the sprue such that the device is filled with a constant amount of casting material irrespective of the dimension of the object in the axial direction and a volume varying with the dimension of the object in the axial direction.