1035 results about "3 dimensional printing" patented technology

Provided are a processing system for a three-dimensional model, a method for obtaining a physical model on the basis of three-dimensional printing of a three-dimensional processing system, a system for generating a three-dimensional model from a virtual reality / augmented reality three-dimensional sketch, a diffusion model training method, and a method for editing a three-dimensional model on the basis of a virtual reality / augmented reality three-dimensional sketch. The method for obtaining a physical model on the basis of three-dimensional printing of a three-dimensional processing system comprises: step one, at an input apparatus, a user using a hand or a handle to draw three-dimensional sketch content in the air, wherein a three-dimensional sketch is stored in the form of a three-dimensional point cloud, and when the user draws a trajectory, a corresponding point cloud is generated in the drawn trajectory and is displayed in a three-dimensional virtual space in a highlighted manner, and displacement and deletion operations of the user for the three-dimensional sketch are overall displacement and deletion operations for points in a region corresponding to the point cloud of the three-dimensional sketch; step two, a computing apparatus converting the three-dimensional sketch content into a three-dimensional model; step three, converting the three-dimensional model into a readable file for an execution apparatus, wherein the conversion is implemented by using a slicing algorithm; and step four, a three-dimensional printer executing the readable file to perform a printing operation, so as to obtain a physical model.

The invention relates to an air tightness detection tool and detection system integrated design method in the field of air tightness detection equipment, and the method comprises the steps: obtaining product form data, extracting shape, size and material information from a product three-dimensional model database, calculating the key points of the outer contour of a product through a geometric feature analysis algorithm, and calculating the shape, size and material information of the product; determining product form diversity parameters; a clamp, an inflation system and a sorting module are decomposed into independent functional units through a modular design structure algorithm, a standardized interface protocol is generated, and physical connection and data interaction modes among the modules are determined; and according to the final tool design parameters, a solid fixture is generated by adopting a three-dimensional printing technology, a robot is controlled through an automatic assembly algorithm to complete integration of the fixture, an inflation module and a sorting module, and an air tightness detection system which can be put into production is obtained.

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.

In one aspect, build materials for use with a three-dimensional (3D) printing system are described herein. In some embodiments, a build material described herein comprises an acrylate component, a photoinitiator component, a non-curable absorber component, and water. The photoinitiator component of the build material is operable to initiate curing of the acrylate component and / or other curable materials that may optionally be present when the photoinitiator is exposed to incident curing radiation having a Gaussian distribution of wavelengths and a peak wavelength λ. The build material has a penetration depth (Dp) and a critical energy (Ec) at the wavelength λ. In some embodiments, the Dp is greater than 200 μm and less than 300 μm, and the Ec is 3-12 mJ / cm2. In other embodiments, the Dp is greater than 10 μm and less than 50 μm, and the Ec is 5-40 mJ / cm2.

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.

The present disclosure provides a ceramic three-dimensional (3D) printing device based on a gel molding process and a control method. The ceramic 3D printing device based on a gel molding process includes a feeding assembly, a receiving assembly, a scraping assembly, and a spray assembly. The feeding assembly includes a feeding pump and a storage hopper. The receiving assembly includes a feeding rod. The feeding pump can convey slurry in the storage hopper to the feeding rod. The control method includes introducing the atomized liquid into the storage hopper and the bearing groove through the first spray pipe and the second spray pipe respectively. According to the present disclosure, a water content of the slurry can be controlled to achieve a better curing effect.

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

A multi-fluid kit for three-dimensional printing can include a fusing agent and a nanoparticle-containing agent. The fusing agent can include water and a radiation absorber, where the radiation absorber absorbs radiation energy and converts the radiation energy to heat. The nanoparticle-containing agent can include a liquid vehicle, high density nanoparticles, and a nanoparticle suspension compound selected from the group consisting of terpineol, ethyl cellulose, and a combination thereof.

A three-dimensional (3D) object production process comprising providing a thermoset printing apparatus comprising a mixing chamber to receive and mix at least a first reactive component and a second reactive component to provide a thermosetting material, an extrusion nozzle to deliver the thermosetting material to form a 3D object, at least one actuator coupled to the extrusion nozzle to move the extrusion nozzle when delivering the thermosetting material to form the 3D object, and a controller comprising one or more processors and coupled to the extruded thermoset printing apparatus, and depositing the thermosetting material to form the 3D object, wherein the depositing comprises depositing a first layer of thermosetting material and depositing an at least second layer of thermosetting material, wherein the beads of thermosetting material in the at least second layer are offset from the beads of thermosetting material in the first layer.

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.

Methods, devices and systems are described for improving the manufacturing of components, devices, and materials. The described technique can predict microstructures including defects, such as cracks, porosity, undesirable phases, or non-optimal grain structures, segregations, and dendrite structures of alloys and superalloys manufactured by additive manufacturing, such as three-dimensional (3D) printing including laser powder bed fusion (LPBF) and laser melting deposition (LMD). Example alloys and superalloys include Rene 65, IN625, Mar-M-247, CM247LC, Rene 108, IN738, Ti-6Al-4V, AlSi10Mg, or IN718.

The invention provides a post-processing device, 3D printing equipment and a method for three-dimensional printing, and the post-processing device comprises a discharging assembly used for separating a 3D printing object from a forming surface of the 3D printing equipment; the material receiving assembly comprises one or more storage pieces, and the storage pieces are used for storing 3D printing objects; and the material receiving assembly is used for storing 3D printing objects belonging to the same user case in one or more storage pieces. According to the technical scheme, the problem that in the prior art, sorting is time-consuming and labor-consuming during 3D printing production, and consequently the 3D printing production efficiency is not high is effectively solved.

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.

A three-dimensional (3D) printer includes a platform assembly on which a 3D object can be built, an extruder, a filament feeding assembly feeding a filament to the extruder, a movable nozzle receiving heated filament from the extruder in a flowable form and directing the flowable filament material on the platform assembly to create the 3D object, and a controlling circuit for controlling an operation of the 3D printer. The platform assembly may include first and second plates separated from one another, a plurality of elongated structures connecting the first and second plates to one another, and a plurality of post assemblies disposed between the first and second plates. The post assemblies may include posts that can be selectively raised and lowered to protrude over the plate, from among the first and second plates, on which the 3D object will be built to assist with the building process.

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 utility model relates to the technical field of 3D printing, in particular to a printing head and a three-dimensional printer. The printing head comprises a connecting assembly, a heating device connected with the connecting assembly and a nozzle connected with the heating device, the connecting assembly comprises at least two material guiding channels, the heating device comprises feeding channels corresponding to the material guiding channels, the feeding channels are communicated with the material guiding channels, and the nozzle is connected with the feeding channels. And a discharging channel communicated with the feeding channel is arranged on the nozzle. The three-dimensional printer comprises the printing head. According to the technical scheme, when printing of other colors or consumables is carried out, the consumables do not need to be returned, and the printing speed is increased.

The utility model relates to the technical field of 3D printing, in particular to a line merging mechanism, a printing head and a three-dimensional printer, the line merging mechanism is applied to printing equipment, the printing equipment further comprises an extrusion mechanism and a nozzle assembly, and the extrusion mechanism is used for selectively driving a target consumable in a plurality of consumables to advance or retreat; the extrusion mechanism is located at the upstream of a consumable path of the line combining mechanism and the nozzle assembly, and the line combining mechanism comprises a plurality of feeding channels and at least one discharging channel communicated with the feeding channels; the nozzle assembly is used for being communicated with the discharging channel. The printing head comprises the line merging mechanism. The three-dimensional printer comprises the line merging mechanism and a printing head. According to the technical scheme, multi-color printing can be achieved without cutting off the consumables.

Disclosed in the present application are a task management method for a 3D printer, and a 3D printing system. The method comprises: acquiring task information of a task to be migrated, wherein said task is at least one printing task which is not completed when a faulty printer in a three-dimensional printing scenario sends an anomaly signal; on the basis of the task information and a target migration strategy, determining a target printer from among a plurality of candidate printers, wherein the target migration strategy is used for matching the target printer for said task; and sending the task information to the target printer, and adding said task to a task sequence of the target printer. The present application solves the technical problems in the related art of low efficiency, high costs and high risk of printing production task delay of a solution that depends on manpower for performing task migration processing when a printing task is abnormal.

The present disclosure relates to the field of three-dimensional printing of carbon fiber, and in particular to a three-dimensional printing path planning method, a three-dimensional printing method, and a system based on a carbon fiber reinforced multi-branch matrix. The planning method includes: determining the joint lines of each branch part based on a multi-branch grid model; generating multi-layer contour lines of each branch part; determining the seam line between every two adjacent branch parts; generating the same number of evenly distributed equal points on the seam line between every two adjacent branch parts in multiple branch parts, and generating equal points on each layer of the contour lines of the multi-layer contour lines of each branch part; generating multiple carbon fiber printing paths corresponding to multiple carbon fiber winding layers based on multiple sets of preset offset information and the equal points on each layer of the contour lines of the multi-layer contour lines of each branch part. In this way, the three-dimensional carbon fiber printing path adopted when using a carbon fiber reinforced multi-branch matrix can be effectively determined.

A three-dimensional (3D) object production system and methods for 3D printing reactive components to form a thermoset product. The disclosure relates to use of a 3D printer having a controller comprising one or more processors to print a 3D object. The disclosure also provides a 3D object production system and methods for 3D printing comprising adjusting one or more parameters of an at least one actuator to produce a 3D object based on a reaction rate between reactive components. It may be described that the exemplary systems and methods described herein may control, or adjust, various part properties by controlling, or modifying one or more of a plurality of reactive components to provide a thermoset product for use in 3D printing.

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.

A three-dimensional printing kit can include a build material with from about 80 wt % to 100 wt % polymeric particles having a D50 particle size from about 10 μm to about 150 μm, and a fusing agent including from about 0.5 wt % to about 20 wt % avobenzone particles dispersed in an aqueous liquid vehicle based on a total weight of the fusing agent.

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.

The invention provides a three-dimensional printing flexible surface dynamic deformation device and method based on a fractal structure, and belongs to the technical field of intelligent materials and flexible structures, and the device comprises a flexible surface unit created based on the fractal structure, a steering engine and a unit body connecting structure; the flexible surface unit is an N-level unit constructed based on a fractal structure; the method comprises the following steps: carrying out equilateral triangle basic gridding on a flattened target curved surface by adopting a first-level unit, and carrying out triangular hierarchical layout on a basic grid according to a Gaussian curvature and a conformal scaling factor of the target curved surface to obtain an initial gridding layout; and optimizing the rationalized gridding layout by adopting a multi-energy item optimization target to obtain an optimized gridding layout. The unit gaps are adjusted through layered splicing of the units, dynamic area changes are achieved, curvature differences are formed, and the problem that a traditional homogeneous structure is low in deformation freedom degree is solved. Through the re-layout of the units after fractal classification, the fitting precision of the complex curved surface is improved.