A cast mould for manufacturing a contact lens or an intraocular lens, wherein the cast mould is provided with a central part and a bearing ring and a flexible connection between the central part and the bearing ring. Further, an injection mould is provided for manufacturing such a cast mould and a method for manufacturing such a cast mould. The injection mould is provided with a mould cavity with a plunger biased by spring means towards the mould cavity which serves for compensating shrinkage which occurs during the curing of the plastic injected into the injection mould. Also described is a method for manufacturing a contact lens or intraocular lens with the aid of the cast mould, as well as a contact lens or intraocular lens obtained with this method.

An injection station of an injection blow molding machine. The injection station comprises a lower die plate and an upper die plate, with lower and upper die plates being shiftable relative to one another between an open position and a closed position. The injection station additionally includes one or more lower mold halves rigidly secured to the lower die plate. The injection station additionally includes one or more upper mold halves floatingly secured to the upper die plate such that positions of the upper mold halves are configured to be adjusted with respect to the upper die plate. Each of the lower mold halves corresponds with an upper mold half to present one or more mold cavities when the lower and upper die plates are in the closed position.

An example mold assembly includes a first core, a second core, and a retaining cap. The first core defines an insert seat configured to receive a mold insert. The first core and the second core are configured to define a mold volume adjacent the mold insert. The retaining cap is disposed about a curved end portion defined by the second core, and defines a curved cap surface in contact with the curved end portion. The retaining cap is configured to secure the second core at a predetermined orientation relative to the first core within predetermined tolerances. An example technique includes positioning a mold insert in the mold assembly, disposing the retaining cap about the second core, securing the second core at a predetermined orientation relative to the first core within predetermined tolerances, and depositing mold material within the mold volume.

Disclosed is a master model (1) defining a useful surface having a complex shape, including a set of juxtaposed frames (2a, 2b, 2c), each frame including a panel having a useful edge (8), the frames being disposed parallel and held rigidly connected with predefined spacings such that the useful edges of same form the useful surface. The panel of each frame includes a blind slot (10) forming an opening passing through the thickness, and the frames are rigidly connected by a spar (3, 3a, 3b, etc.) suitable for being inserted (6) in the lengthwise direction (L) of same into the slots and including transverse notches (11) for receiving and holding the frames, each notch being arranged to receive, by a relative transverse translational movement (7) of the spar relative to the frames, the part in question of the panel of each frame.

A machine for disassembling a lens mold assembly including a first mold part, a second mold part, and a molded-lens sandwiched therebetween. The machine includes a centering unit to center the lens mold assembly. The machine includes a disassembling module having a mold engagement mechanism to engage the first and second mold parts to clamp and move the lens mold assembly. The disassembling module includes a molded-lens holder mechanism having at least two clamping members to clamp the molded-lens of the lens mold assembly. The machine includes an alignment guidance module to detect relative positions between the molded lens of the lens mold assembly and the molded-lens holder mechanism to align the molded lens for clamping by the molded-lens holder mechanism. The mold engagement mechanism is configured to hold the first and second mold parts individually and to separate the first and second mold parts from the molded lens.

The present invention relates to a guiding and centering device (10) for a forming tool (2), in particular an injection molding or die-casting tool, comprising a first mold half (1) and a second mold half (5) which are guided by guide means (7) from a closed position in which the respective separating surfaces of both mold halves (1; 5) are pressed against one another into an opened position and vice versa. This guiding and centering device (10) comprises a protruding guiding body (4) formed as a circular cylindrical bolt (12) provided at the first mold half (1), a guiding recess (6) formed as a bush (14) with an circular cylindrical inner surface (20) provided at the second mold half (5) and a rolling element cage (16) with rolling elements (17) inserted in rows (18), by means of which the two mold halves (1; 5) are guided and precisely centered in the closed position. The rolling element cage (16) is supported by the circular cylindrical inner surface (20) of the bush (14) and positioned via positioning means (30) in such a way that when closing the forming tool the circular cylindrical bolt (12) runs practically simultaneously in a first row of rolling elements (18.1) and a second row of rolling elements (18.2) of the rolling element cage (16).

A tool is disclosed for the production of foamed insulation boards with two side faces lying opposite one another and all-round end faces such as facade insulation boards for insulating buildings. The tool has two mold halves, each having a mold frame and a mold base. The two mold halves together bound a mold cavity, which corresponds roughly to an insulation board to be produced, with the mold frames defining or bounding the end faces of the insulation board to be produced and the mold base defining or bounding the side faces. A setting device sets the position of the two mold halves in a plane parallel to the mold bases. The setting device is designed for stepless setting of the position of the two mold halves relative to one another.

Tooling assemblies and methods for using a tooling assembly to shape an article are provided. For example, a tooling assembly has a forward end and an aft end and comprises a first tool segment, a second tool segment, a forward cam portion near the forward end, and an aft cam portion near the aft end. The forward cam portion defines a follower surface, and at least a portion of the follower surface has a curvilinear profile. The aft cam portion defines a first surface extending at a first angle and a second surface extending at a second angle. The first and second tool segments define a cavity for shaping an article. An exemplary method comprises positioning an article preform within the cavity and inserting a fastener within the aft end of the tooling assembly until the fastener is fully inserted within the tooling assembly.

A mold for use with an injection molding machine includes a body having a surface and a ring protruding from the surface for aligning the body and a platen. The ring defines a right circular cylinder having a protruding end, the protruding end having subtracted therefrom a generally wedge-shaped portion, the protruding end forming a tapered end.

A display system includes: an imaging unit that images a mold from below; and a display unit that displays an image taken by the imaging unit together with a carry-in range of the mold in order to transport the mold in place between the stationary platen and the moving platen.