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1009results about "Manufacturing enclosures" patented technology

Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, and containing the second solidifiable component carried in the scaffold in unsolidified and / or uncured form; and (d) concurrently with or subsequent to the irradiating step, solidifying and / or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object.
Owner:CARBON INC

Stereolithography apparatus

A stereolithography apparatus includes a supporting frame assembly, a tank supported on the supporting frame assembly, a vertically moving module, and a build platform. The tank has an anchored portion anchored to the supporting frame assembly. The build platform is vertically moved relative to the tank by the vertically moving module. After a resin layer is solidified and adhered to the bottom of the tank and the build platform, the tank is peeled away from the resin layer starting from a portion of the resin layer adjacent to the anchored portion and partially moves upward relative to the supporting frame assembly around the anchored portion when the build platform leaves the supporting frame assembly. To further reduce the separation force between the cured resin layer and the tank, the bottom of the tank is covered with materials that are transparent, chemically resistant, impact resistant or / and elastic.
Owner:SYAO KAO CHIH

Machine and process for powder-based additive manufacturing

The invention in particular relates to a machine (1) for additive manufacturing that frits or melts powder (2) using an energy beam (3) acting on a powder layer (23) in a working zone (4), said machine comprising a device for producing a layer of said powder, said device comprising: means (5) of storing the powder; means (6) for distributing the powder, which means is able to travel over the working zone in order to distribute the powder in a layer (23) having a final thickness (24) tailored to the additive manufacturing; feeding means (7) able to transfer the powder from the storage means (5) to the distributing means (6); and dosing means (8) able to control the amount of powder transferred from the storage means (5) to the distributing means (6), said machine being characterised in that: the storing means (5) are located above the working zone (4); the feeding means (7) are gravitational feeding means; and the feeding means (7) and the dosing means (8) are able to move with the distributing means (6).
Owner:MICHELIN & CO CIE GEN DES ESTAB MICHELIN

Apparatus and method for forming three-dimensional objects using a tilting solidification substrate

An apparatus and method for making a three-dimensional object from a solidifiable material using a linear solidification device is shown and described. The apparatus includes a solidification substrate that is tiltable relative to a film about a tilting axis. Layers of the solidifiable material solidify in contact with a film located between the most recently solidified object layer and a solidification substrate that comprises the solidification substrate assembly. The tilting of the solidification substrate relative to the film allows the substrate to be used to squeeze excess solidifiable material from between the film and the most recently solidified object surface while minimizing or eliminating the formation of bubbles in the solidifiable material which can prolong object build times. In addition, tilting the solidification substrate before separating an adhered object surface from the film breaks any vacuum formed between the substrate and the film which reduces the forces involved in separating the object form the film.
Owner:GLOBAL FILTRATION SYST

Liquid tank device, three-dimensional printing device provided therewith and printing model separating method

The invention relates to a liquid tank device, a three-dimensional printing device provided therewith and a printing model separating method. The liquid tank device comprises a fixed platform; a supporting structure comprising a pallet and a light-transmitting plate; a liquid tank structure comprising a liquid tank body and a separation membrane; and a pneumatic separation mechanism for introducing a gas between the separation membrane and the light-transmitting plate, or extracting a gas between the separation membrane and a support structure out; wherein the separation membrane and the support structure together form a venting gap. The pneumatic separation mechanism can supply the gas into the venting gap between the separation membrane and the support structure to deform the separationmembrane so as to separate the separation membrane from the light-transmitting plate to break vacuum environment between the separation membrane and the light-transmitting plate. Therefore, the separation membrane can be deformed following a printing layer due to the ductility of the separation membrane, and the printing layer can be finally separated from the separation membrane easily. When thepneumatic separation mechanism evacuates the gas in the venting gap between the separation membrane and the support structure, the separation membrane can be reattached to the light-transmitting plateto prepare for next printing.
Owner:HANS LASER TECH IND GRP CO LTD
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