740 results about "3 dimensional printing" patented technology

An example of a multi-fluid kit for three-dimensional (3D) printing includes a fusing agent and a surface treating agent. The fusing agent includes an electromagnetic radiation absorber and a first aqueous vehicle. The surface treating agent includes a second aqueous vehicle, a surfactant, and benzyl alcohol dissolved in the second aqueous vehicle.

The invention discloses a three-dimensional printing method and three-dimensional printing equipment for manufacturing a target object. The three-dimensional printing method comprises the following steps: curing a first material to form a first part of a first layer in a plurality of target layers; curing the second material to form a second portion of the first layer of the plurality of target layers; curing the first material to form a first portion of a second layer of the plurality of target layers on the first portion of the first layer, the total thickness of the first portion of the first material being greater than the total thickness of the second portion of the second material; the steps are repeated to form a plurality of target layers of the target object. According to the scheme provided by the invention, various risks caused by the positioning accuracy of movement in the vertical direction are reduced.

Disclosed are a modified-release oral pharmaceutical dosage form and a related preparation method therefor, for example, a three-dimensional printing method is used.

The invention provides a three-dimensional printing method and three-dimensional printing equipment. The three-dimensional printing method comprises the steps that a first material is supplied to a bearing area of a light-permeable material containing mechanism of the three-dimensional printing equipment through a first channel of a material supply mechanism of the three-dimensional printing equipment; a second material different from the first material is supplied to the bearing area of the material containing mechanism through a second channel of the material supply mechanism; a forming platform mechanism of the three-dimensional printing equipment is moved, so that the forming platform mechanism makes contact with the first material and the second material in the bearing area; light rays are projected to the bearing area through an optical mechanism of the three-dimensional printing equipment, so that the first material and the second material are cured, and a curing layer adhering to the forming platform mechanism is formed; and the forming platform mechanism is moved away from the material containing mechanism, so that the curing layer is separated from the material containing mechanism.

The invention relates to the technical field of three-dimensional model processing, in particular to a three-dimensional model collecting and repairing system and method. The system scans an ancient cultural relic through a laser scanning device, obtains three-dimensional point cloud data and texture information of the ancient cultural relic, and constructs an original three-dimensional damage model. On this basis, the system obtains the same type of cultural relic images similar to the target ancient cultural relic through an image style clustering algorithm, and forms a style label library. Thirdly, performing style feature extraction on the image in the style label library by adopting a deep learning network to obtain a style feature vector for condition generation; the system further generates a model based on the three-dimensional diffusion obtained by training, takes the style feature vector as condition input, and generates a complete three-dimensional repair model consistent with the target style through a gradual denoising process. And finally, outputting a repaired three-dimensional model result by the system, and providing a reference for subsequent digital display, three-dimensional printing or material object repair.

A method of three-dimensional printing can include iteratively applying a polymer build material as individual layers to a powder bed, where the polymer build material includes from about 80 wt % to 100 wt % polymeric particles, and based on a three-dimensional object model, selectively applying a coalescing agent onto individual layers of the polymer build material. The coalescing agent can include an aqueous liquid vehicle and a coalescing solvent that depresses a melting point of the polymeric particles. The method can include exposing the powder bed to heat to selectively coalesce portions of individual layers of the polymer build material in contact with the coalescing solvent. The heat may not be sufficient to coalesce the polymer build material that is not in contact with the coalescing solvent and may be sufficient to fuse the polymeric particles in contact with the coalescing solvent together to form a three-dimensional object.

The invention provides three-dimensional printing equipment and a three-dimensional printing method. The three-dimensional printing equipment comprises a light-permeable material containing mechanism and a printing mechanism, wherein the light-permeable material containing mechanism is provided with a bearing area configured to bear a printing material; a feeding mechanism including a first channel configured to supply a first material and a second channel configured to supply a second material different from the first material; the driving mechanism is configured to move at least one of the material containing mechanism and the material supply mechanism; an optical mechanism configured to project light to the bearing area based on the pattern to cure the first material and the second material; the forming platform mechanism is configured to adhere to the curing layer and can carry the adhered curing layer to be separated from the material containing mechanism, and the curing layer comprises at least one of a part formed by the first material, a part formed by the second material and a part formed by the mixture.

Provided herein are methods and systems for improving performance of three-dimensional printing systems, which may include: printing a first portion of the 3D object using a first parameter set and a first light beam, wherein the first parameter set includes at least one first parameter corresponding to a first optical property of the first light beam; and printing a second portion of the 3D In object different from the first portion using a second parameter set and a second light beam, wherein the second parameter set includes at least one second parameter corresponding to a second optical property of the second light beam, wherein the second parameter set is different from the first parameter set, wherein the second optical property is different from the first optical property, to yield at least at least a portion of the 3D object comprising the first portion and the second portion.

The invention provides a three-dimensional printing method and three-dimensional printing equipment. The three-dimensional printing method comprises the steps that a first material is supplied to a bearing area of a light-permeable material containing mechanism of the three-dimensional printing equipment through a first channel of a material supply mechanism of the three-dimensional printing equipment; a second material different from the first material is supplied to the bearing area of the material containing mechanism through a second channel of the material supply mechanism; a forming platform mechanism of the three-dimensional printing equipment is moved, so that the forming platform mechanism makes contact with the first material and the second material in the bearing area; light rays are projected to the bearing area through an optical mechanism of the three-dimensional printing equipment, so that the first material and the second material are cured, and a curing layer adhering to the forming platform mechanism is formed; and the forming platform mechanism is moved away from the material containing mechanism, so that the curing layer is separated from the material containing mechanism.

The present invention includes methods for reducing photoexcitation of a photoswitchable photoinitiator in volumetric printing including a volume of a photohardenable composition at locations in the volume at which intersection of two wavelengths does not occur; methods of three-dimensional (3D) printing including dual-wavelength photoexcitation of a photohardenable composition included in a volume, the method including photoexcitation by a modified or controllably-sized light sheet including a first wavelength and an optical projection including a second wavelength; and methods for extending the reuse-printing lifetime of a photohardenable composition including a photoswitchable photoinitiator. Preferably the photohardenable composition includes the dual-wavelength photoinitiator and a photohardenable resin component. The present invention also includes a photohardenable composition including a photoswitchable photoinitiator with an improved reuse-printing lifetime.

The present disclosure provides bioreactors and methods of producing the same. Bioreactors of the present disclosure may include a macrostructure comprising a plurality of fluidically connected minimodules that form a plurality of channels. A channel may comprise a gas permeable layer configured to provide gas diffusion to or from the channel. The macrostructure may be manufactured using three-dimensional printing of a resin. The resin may comprise a polymerizable component, photoinitiator, thermocuring agent, or any combination thereof. One or more surfaces of the microfluidic macrostructure may comprise a biocompatible coating.

The invention provides a method for reconstructing a three-dimensional model based on artificial intelligence by using a two-dimensional image and an application thereof, when an implant is required to replace a lesion tissue during an operation, the lesion tissue does not need to be scanned by three-dimensional CT scanning, and only the two-dimensional medical image needs to be shot, so that the three-dimensional model is reconstructed. And a three-dimensional model of the lesion tissue can be obtained through the artificial intelligence model. A doctor can understand the specific condition of a surgical site through the three-dimensional model, then make a targeted surgical scheme, and directly design a corresponding implant and a customized surgical auxiliary tool in the three-dimensional model according to the surgical site. Meanwhile, related auxiliary design of the implant and the surgical auxiliary tool in the manufacturing process through the three-dimensional printing technology can be automatically generated, and finally, the generated design data of the implant and the surgical auxiliary tool are sent to the three-dimensional printing equipment to directly complete printing operation of the implant and the surgical auxiliary tool. The working process can be greatly simplified, the accuracy is improved, and the design requirements of customized medical equipment are met.

The invention discloses a sprayed concrete construction method for 3D printing of a building structure, and relates to the technical field of building engineering, and the method comprises the following steps: S100, based on the operation cycle of a nozzle driving system, collecting pressure waveform data in a concrete spraying process, extracting a dominant frequency and amplitude change sequence, and generating a pressure disturbance feature vector with a time label; and S200, according to the pressure disturbance feature vector, the lowest-order inherent frequency and the response sensitive bandwidth of a current printing unit are dynamically modeled in combination with the printing track layer height, the concrete age data and the forming geometric parameters, and a structure dynamic response baseline is constructed. According to the method, identification and control of injection disturbance and structure inherent frequency resonance risks are achieved, a feedforward regulation and control mechanism and a closed loop feedback mechanism are fused, the instability problem caused by structure resonance is avoided, the injection parameter adjustment precision and the path execution stability are improved, and the forming precision, the structure safety and the construction continuity in the three-dimensional printing process are guaranteed.

The invention discloses a three-dimensional printing method and three-dimensional printing equipment for manufacturing a target object. The three-dimensional printing method includes: forming a first plurality of layers of a target object using a base material; and forming a second plurality of layers of the target object using the first material and a second material different from the first material, including: curing the first material to form a first portion of the first layer of the second plurality of layers; curing the second material to form a second portion of the first layer of the second plurality of layers; curing the first material to form a first portion of a second layer of the second plurality of layers on the first portion of the first layer; curing the second material to form a second portion of a second layer of the second plurality of layers on the second portion of the first layer; the steps are repeated to form a second plurality of layers of the target object. According to the method, at least two materials can be printed on the same layer, so that the printing effect of multiple materials (such as colors) is achieved.

Embodiments of the present disclosure provide an apparatus, a system, and a method. The apparatus is configured to depowder and extract one or more printed parts prepared by a three-dimensional (3D) printer. The apparatus includes an elevated frame, a perforated plate, a lifting-lowering mechanism, a depowdering unit, and at least one gripper. The elevated frame is removably secured to an open top of a first container and configured to transversely receive fully raised at least one 3D printed layer and partially raised at least one powder layer. Upon lifting the elevated frame along with the perforated plate, the depowdering unit is configured to depowder the at least one powder layer and powder in between the one or more 3D printed parts. The at least one gripper is configured to automatically extract the one or more 3D printed parts.

The invention relates to the field of new energy automobile bottom structure lightweight protection and bionic structure material design, and discloses a bionic okra sandwich structure battery box protection plate and a manufacturing method thereof. The protection plate comprises an upper aluminum alloy panel, a lower aluminum alloy panel and a polylactic acid (PLA) sandwich layer located between the upper aluminum alloy panel and the lower aluminum alloy panel, and the sandwich layer is composed of a plurality of cell element arrays with pentagonal symmetrical radial rib structures and is arranged in a hollow star topology mode. The sandwich structure is integrally formed through three-dimensional printing and is fixedly connected with the upper panel and the lower panel in a mixed mode through adhesives and bolts, and the whole sandwich structure is formed. The manufacturing method comprises the steps of parametric modeling, FDM printing forming, panel mold pressing, hole site machining, assembly curing and the like. The structure has both multidirectional mechanical response capability and energy absorption performance, has good impact resistance and adaptability, and is suitable for the design of a light-weight and energy-absorption protection structure at the bottom of a power battery system of a new energy automobile.

Items may be packaged for shipping or storage using additive manufacturing techniques, also known as three dimensional (3-D) printing. Packages made by such processes may be referred to as 3-D printed packages and may include packing material printed at least partially around the item(s) and / or an outer cover printed about at least a portion of an exterior of the packing material and / or the item(s). A packaging system may include a 3-D printer and a computing device communicatively coupled to the 3-D printer. The computing device may obtain a packaging model describing a package for one or more items. A print module of the computing device may include instructions to print the package at least partially about the item(s) according to the packaging model.

An example of a multi-fluid kit for three-dimensional printing includes a fusing agent, a detailing agent, and a flame-retardant cyclodextrin compound. The fusing agent includes an electromagnetic energy absorber and a first liquid vehicle. The detailing agent includes a second liquid vehicle. The flame-retardant cyclodextrin compound is included in the fusing agent, or in the detailing agent, or in both the fusing agent and the detailing agent.

The invention is suitable for the field of three-dimensional printing, and provides a method for generating a slice map and a 3D printing method. A method of generating a slice map includes providing a three-dimensional model including a plurality of facets, each facet associated with a surface feature; outputting a plurality of slice images through a plurality of tangent planes intersected with the three-dimensional model, wherein each slice image comprises a first intersection point of the tangent plane and the plurality of facets; through a plurality of straight lines perpendicular to the tangent plane, determining second intersection points of the plurality of straight lines and the plurality of patches; and determining an association attribute of the slice map at least based on the surface feature associated with the first intersection point and the surface feature associated with the second intersection point. According to the method, the accuracy of the obtained slice image can be improved.

The invention relates to the technical field of building automation maintenance, and discloses a concrete crack repairing method fusing unmanned aerial vehicle vision and a 3D printing technology, and the method comprises the steps: collecting a high-resolution image and three-dimensional point cloud data of a crack through an inspection unmanned aerial vehicle; processing the data by using a central processing unit to generate a crack three-dimensional digital model; according to the crack three-dimensional digital model, a three-dimensional printing deposition path and a flight path are generated for a printing unmanned aerial vehicle; and finally, the printing unmanned aerial vehicle deposits a repairing material into the crack through the carried 3D printing system along the planned path. According to the method, the high-precision three-dimensional model is established, and accurate filling of the repairing material is achieved. The deposition process is dynamically corrected by adopting a closed-loop quality control step, and long-acting healing is realized by utilizing a microbial self-repairing material, so that automation and intelligence of crack repairing are realized, the operation efficiency and safety are improved, and the method is particularly suitable for environments such as bridges, high-rise buildings and the like which are highly endangered and difficult to reach by manpower.

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, devices, software, and systems for controlling and / or safely treating debris.

Systems and methods for assisting a surgeon with implant during a surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining an implant type. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for an implant are determined based on the salient points of the areas of interest. In spinal procedures, a maximum screw diameter and a length of the spinal screw are successively determined based on the salient points. Based on determined length and diameter, a spinal screw and a matching screw guide is determined. Thereafter, the spinal screw and the screw guide is printed using a Three-Dimensional (3D) printer. Such printed spinal screw and screw guide could be used by the surgeon during the spinal surgery.

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent comprising water and a radiation absorber that absorbs radiation energy and converts the radiation energy to heat, an acidic agent having a pH from about pH 1 to about pH 6.9 that includes water and an acidic component, and a pore-promoting agent including water and a pore-promoting compound. The pore-promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

A three-dimensional printing kit can include a polymeric build material including from about (80) wt % to (100) wt % polymer particles having an average particle size from about (10) μm to about (150) μm, and can also include a fusing agent including an aqueous liquid vehicle and from about (2) wt % to about (20) wt % of a mixture of organic dye radiation absorbers. The mixture of organic dye radiation absorbers can include a charged yellow water-soluble organic dye and a cyan water-soluble organic dye. The mixture of the organic dye radiation absorbers can be from about (1) wt % to about (40) wt % soluble in water.

The utility model relates to an air purification module, three-dimensional printing equipment and a three-dimensional printing system. The air purification module comprises an air inlet channel, a carrier unit, an illumination unit and an exhaust channel, and the carrier unit is loaded with a titanium dioxide photocatalyst; the illumination unit corresponds to the carrier unit and is used for emitting ultraviolet light; the exhaust channel communicates with the air inlet channel to form an airflow channel, the carrier unit and the illumination unit are both arranged in the airflow channel, and the airflow channel is used for communicating with a printing space where the three-dimensional printing equipment is located. According to the air purification module, the ultraviolet light emitted by the illumination unit and the titanium dioxide photocatalyst in the carrier unit are subjected to photochemical reaction, volatile organic compounds can be purified, meanwhile, due to the fact that the titanium dioxide photocatalyst in the carrier unit cannot be consumed, frequent replacement of the carrier unit can be avoided, and the service life of the air purification module is prolonged. The replacement frequency of the carrier unit and the photocatalyst can be reduced while the purification effect of the air purification module is improved.

The present application relates to the technical field of additive manufacturing, and in particular to a three-dimensional printing consumable material of a continuous fiber-reinforced composite material and a preparation method therefor, a three-dimensional printing method, and a three-dimensional printed article. In the present application, a woven tube structure is used, and a continuous fiber core is embedded into a skin-layer fiber woven tube in a wrapping or interlacing mode, so that the interface bonding force of fibers can be improved, and a three-dimensional printing consumable material having excellent mechanical properties can be obtained. In addition, by adjusting the types, proportions, weaving structures, relative positions, contents, and the like of continuous fibers and skin-layer fibers, the three-dimensional printing consumable material having excellent mechanical properties, thermal properties, special functionalities, and processing properties can be obtained, the strength, stiffness, heat resistance, and other properties of the printed article can be significantly improved, and the manufacturing requirements of high-performance structural members and special functional members are met. The present application solves the problems of difficult continuous fiber supply, poor interface bonding force, etc. in the prior art, and has wide application prospects.

The invention is generally a system for drying, recycling, and washing off residual resin from three-dimensionally (3D) printed objects. Exemplary systems may include a system for washing off residual printing material from a surface of a 3D-printed. In an exemplary embodiment, a chamber is adapted to receive the 3D-printed object and a printing material disruption module is adapted to disrupt a composition of residual printing material on a surface of the 3D-printed object. Additionally, a washing force module may be adapted to apply a washing force field to the 3D-printed object and wash off the residual printing material.