1546 results about "3 dimensional printing" patented technology

A method and a system for three-dimensional printing of a three-dimensional model is provided. The method includes dispensing a first interface material from a printing head, dispensing at least a second interface material from the printing head and combining the first and second interface material in pre-determined proportions to produce layers for forming the three-dimensional model. In one embodiment, the layers forming the construction layers of the model are formed from interface material having a harder modulus of elasticity from the layers forming the release layers, thereby allowing for the forming complex three-dimensional shapes.

A system and a method for printing of three-dimensional models and apparatus for controlling the height and thickness of the layers of interface material forming the 3-D models being printed, is provided. The method includes the steps of dispensing a pre-determined quantity of interface material from at least one printing head to form at least one interface layer; leveling the dispensed interface material to a pre-determined height; curing the leveled interface material; and repeating the steps of dispensing, leveling and curing thereby producing a plurality of interface layers to a configured pattern layer for forming the three-dimensional model.

A materials system and methods are provided to enable the formation of articles by three-dimensional printing. The materials system includes an absorbent particulate filler that facilitates absorption of infiltrants, thereby allowing the accurate definition of articles with enhanced mechanical and structural characteristics. The methods include the use of phase-change materials to bind a powder, as well as the formation of support structures to improve the control of the shape of the articles.

A process of, and apparatus for, three-dimensional printing of an object (200) from modeling material (220) including a printing tray (170) having a surface coating (202), a carpet (210), a support material (215), a support pedestal (210), a barrier layer (230) and a temperature control unit (204).

A three-dimensional printing system (1) includes: a head (2) to which a first continuous material (FL) including a resin and a second continuous material (FB) including fibers are fed; a platform (3) on which a printing material based on the first and second continuous materials from the head is stacked; a cutting device (10) which is capable of cutting at least fibers; and a controller (5) which controls an operation device including at least one of the head, the platform, and the cutting device.

The present invention is directed to three-dimensional printing material systems and method, and an article made therefrom. The method of the present invention includes building cross-sectional portions of a three-dimensional article, and assembling the individual cross-sectional areas in a layer-wise fashion to form a final article. The individual cross-sectional areas are built by using an ink-jet printhead to deliver a fluid to a particulate material that includes particulate material.

Solid free form fabrication techniques such as fused deposition modeling and three-dimensional printing are used to create a dental restoration. Three-dimensional printing comprises inkjet printing a binder into selected areas of sequentially deposited layers of powder. Each layer is created by spreading a thin layer of powder over the surface of a powder bed. Instructions for each layer may be derived directly from a CAD representation of the restoration. The area to be printed is obtained by computing the area of intersection between the desired plane and the CAD representation of the object. All the layers required for an aesthetically sound restoration can be deposited concurrently slice after slice and sintered/cured simultaneously. The amount of green body oversize is equivalent to the amount of shrinkage which occurs during sintering or curing. While the layers become hardened or at least partially hardened as each of the layers is laid down, once the desired final shaped configuration is achieved and the layering process is complete, in some applications it may be desirable that the form and its contents be heated or cured at a suitably selected temperature to further promote binding of the powder particles.

The invention discloses a non-support three-dimensional printing method based on inclined layering. The method comprises five steps of model surface overhanging area identification, model reestablishment, horizontal slicing, motion code coordinate transformation, and path coupling; a path includes two parts: a horizontal layered path and an inclined layered path. A path track inclined relative to a horizontal plane is formed at an overhanging part; when the region is printed, a new layer of material can be guaranteed to be not only suffered from gravity but also is suffered from an adhesive force in a deposition process due to the presence of a formed printing layer on an upper layer. An additional supporting material is omitted, a printing raw material is saved, the printing efficiency is improved, and a process of subsequent support removal is omitted. The inclined layered three-dimensional printing path provided by the invention has a common code format, can be directly applied in commercial and open-source desktop type three-dimensional printers, has extensive application prospects, and can be extended to the three-dimensional printing technology in biology, chemical engineering, macromolecule and food industries.

The invention concerns a print robot for large format three-dimensional printing on a fixed surface ( 11 ) having five motorized axes, comprising an inkjet printing block ( 13 ), means for displacing and orientating this printing assembly along several axes, at least one control unit controlling these means and a drying device to dry the ink sprayed onto said surface ( 11 ), wherein these means comprise: a carrier ( 15 ) with three degrees of freedom in translation, ensuring the positioning of the printing assembly allowing its horizontal, vertical and depth translation, a wrist ( 16 ) with two degrees of freedom which supports and orientates the printing assembly ( 13 ) allowing its rotations along two perpendicular axes. The invention also concerns a process implementing this robot.

A polymeric material that is capable of being employed as a build material and/or support material in a three-dimensional printer system is provided. The polymeric material is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer. A microinclusion additive and nanoinclusion additive are dispersed within the continuous phase in the form of discrete domains.

The invention discloses a photocuring material for three-dimensional printing. The photocuring material consists of inorganic powder and an organic liquid containing curable components, wherein the inorganic powder accounts for 60%-99.9% of the total weight, and the organic liquid accounts for 0.1%-40% of the total weight; and the inorganic powder material is ceramic powder, or metal powder or composite powder of ceramic and metal. The invention also discloses an application method of the photocuring material. The photocuring material and the application method disclosed by the invention have the advantages that more printing-material selecting space is provided for the three-dimensional printing technology, and the purpose of utilizing the three-dimensional printing technology to prepare the three-dimensional structure with one or more ceramic materials, or metal materials or coexistence of ceramic and metal on the same plane can be achieved.

A material system for use in a 3D-printing, which exhibits a higher form stability. The material system contains binder and solvent as well as optional filler materials. The binder is soluble in the solvent, as well as two complementary polyelectrolytes, and/or an initiator for a cross linking reaction of the binder. The advantage of such a mixed material system is comprised in the essentially higher binder force between the individual particles. This enhanced binder force results either from the acid-base linkages, which form between the complementary polyelectrolytes, or from the supplemental networking initiated by the initiators, or from both. Substantially higher binding forces between the individual particles means at the same time a substantially higher shape stability of the 3D-printing product.

A method of forming a three-dimensional object includes: providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid, irradiating the build region with light through the optically transparent member to form a solid polymer from the polymerizable liquid, and advancing said carrier away from said build surface to form said three-dimensional object from said solid polymer. The irradiating step includes projecting focused light at the build region, and the advancing step is carried out at a rate that is dependent on an average light intensity of the focused light.

The polymeric composition of this invention can be used as a temporary support material in the additive manufacturing of three dimensional articles without compromising the quality of the ultimate product, reducing printing speed, increasing cost, increasing the incidence of printer jamming, or requiring printers of increased complexity. This invention more specifically discloses a polymeric composition which is particularly useful as a temporary support material for utilization in three-dimensional printing, said polymeric composition being comprised of a first polymeric component which is suitable for use as a modeling material and a second polymeric component which is immiscible with the first polymeric component, wherein the polymeric composition has a continuous phase, wherein the continuous phase is comprised of the second polymeric component, and wherein the polymeric composition has a Shore A hardness of at least 80.

The invention discloses a three-dimensional printer for printing liquid materials. The three-dimensional printer comprises a three-dimensional adjusting mechanism, and a printing sprayer which performs three-dimensional printing under adjustment of the three-dimensional adjusting mechanism, wherein the printing sprayer comprises a nozzle driving motor, a tube outer sleeve, a tube sleeved in the tube outer sleeve; a charging hole and a sprayer which is fixed at the other end of the tube outer sleeve are arranged on one side at the bottom end of the tube; a nozzle is arranged on the sprayer; a feeding hole which is mutually opposite to the charging hole, a tube heating sleeve which is sleeved on the outer wall of the tube outer sleeve and is used for heating the tube outer sleeve and the tube, a nozzle heating sleeve used for heating the nozzle, and a hopper used for containing a printed material are arranged on one side of the sprayer; and the hopper is mutually connected with the feeding hole through a pipeline with a feeding control valve. The three-dimensional printer is stable in jet, the food materials can be treated according to a food material temperature regulation process, materials can be automatically supplemented, the ejected material can be rapidly cooled and deposited, the three-dimensional printer is high in precision, sanitary and convenient, and chocolate, cream, jam and multiple liquid food materials can be printed.

A fastener is provided. In another aspect, a fastener is made of layers of material, a light curable material and/or multiple built-up materials. Another aspect uses a three-dimensional printing machine to emit material from an ink jet printing head to build up a fastener.

The present invention provides an apparatus for manufacturing multiple color three-dimensional (3D) objects using an additive extrusion type manufacturing build process where the multiple color three-dimensional (3D) object is built layer by layer using a single extrusion nozzle in contact or close proximity to each build layer of the 3D object being manufactured.

An apparatus performing as a base for printing 3D objects using high temperature thermoplastics employing additive manufacturing methods is provided. The apparatus comprises a heated build platform, a thin removable plate secured on top of the build platform, a high temperature polymer coating applied over the removable plate, and surface treatment of high temperature polymer coating to maintain adhesion between 3D object and printing surface. Also, the removable plate has low coefficient of thermal expansion compared to build platform below it, for avoiding bowing of the plate as it is heated due to heated build platform, hence providing flat printing surface. The thin removable plate allows 3D objects to pop off the plate upon cooling, without damaging the polymer coating, the plate, or the object. It also allows for continuous operation of printing, while the plate is released for cooling, a new plate is installed for printing.

A build plate for a three-dimensional printer includes: a rigid, optically transparent, gas-impermeable planar base having upper and lower surfaces; and a flexible, optically transparent, gas-permeable sheet having upper and lower surfaces, the upper surface comprising a build surface for forming a three-dimensional object, the sheet lower surface being positioned on the base upper surface, wherein at least one of the base upper surface and the sheet lower surface has an uneven surface topology that increases gas flow to the build surface.

A three-dimensional printing system having a generally planar object platform that is rotatable about a central point is disclosed. A printing extruder nozzle is disposed above the platform and configured for radial or linear movement relative thereto while the platform rotates. The rotating platform may include an electromagnet configured to attract magnetic flakes within the material extruded by the printing nozzle. The printing nozzle may include a multi-heater having two or more heating units configured to incrementally heat the printing material from room temperature to the target extruded temperature.

A system and method for three-dimensional printing are provided. One three-dimensional printing system includes a first printing surface configured to hold a first three-dimensional object. The three-dimensional printing system also includes a second printing surface configured to hold a second three-dimensional object. The three-dimensional printing system includes at least one printing head disposed adjacent to the first and second printing surfaces for printing the first and second three-dimensional objects. A vertical position of the first printing surface is controlled independently from a vertical position of the second printing surface.

The invention relates to a detection device used in a fused deposition type three-dimensional printer. The detection device comprises a mounting seat and a first detection unit, wherein the first detection unit comprises a first detection wheel, a spring, a first photoelectric sensor as well as a positioning roller and an extrusion roller rotatably mounted on the mounting seat; an axis of the extrusion roller is parallel to that of the positioning roller, and the distance between the axes is adjustable; restoring force of the spring enables the distance between the axis of the extrusion roller and the axis of the positioning roller to be reduced; a channel for wire forming is formed between a working surface of the extrusion roller and a working surface of the positioning roller wheel; the first detection wheel is coaxially connected with the extrusion roller or the positioning roller in an equal-angular-speed manner; the first detection wheel comprises a base part and a covering part circumferentially arranged along the base part; a light path of the first photoelectric sensor penetrates through a plane formed by rotating the covering part around an axis of the first detection wheel. The detection device can be used for detecting whether the three-dimensional printer has the problems of empty printing and the like or not. In addition, the invention further provides the three-dimensional printer employing the detection device and a printing method of the printer.