1226 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 present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration and maneuverability. The disclosure delineates calibration of one or more components of the 3D printer, e.g., the energy beam. The disclosure provides optical devices that are robust, e.g., in terms of their maneuvering.

Methods and systems are disclosed for apparel assembly using three-dimensional printing directly onto fabric apparel materials. Disclosed is a method and system for direct three-dimensional printing and assembly of an article of apparel, including designing a three-dimensional pattern for printing, positioning at least a portion of the article on a tray in a three-dimensional printing system, the portion being positioned substantially flat on the tray, printing a three-dimensional material directly onto the article using the designed pattern, curing the printed material, and removing the article from the three-dimensional printing system.

The invention discloses a machine learning optimization method of a low-frequency sound absorption structure based on three-dimensional printing, and belongs to the technical field of artificial intelligence acoustics, the low-frequency sound absorption structure is prepared from a photosensitive resin material through photocuring three-dimensional printing, and comprises a side seam, an extension cavity, a circular through hole, a resonance cavity, a first partition plate, a second partition plate and a third partition plate, the method has good expansibility and can be adjusted according to different noise control requirements; through a machine learning optimization method, structure parameters can be quickly adjusted to cope with a noise control task on the premise of ensuring a small size, so that a remarkable sound absorption effect is obtained at a specific low-frequency band; according to the method, a machine learning method based on a multi-layer perceptron and a genetic algorithm is adopted, geometric parameters of the low-frequency sound absorption structure are optimized, simulation calculation is carried out by using a commercial finite element solver COMSOL Multiphysics, and the sound absorption performance of the structure is further verified and optimized.

The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a ductility agent. The fusing agent can include water and electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The ductility agent can include water, a water-soluble pore-generating compound that chemically reacts at an elevated temperature to generate a gas, and a plasticizer. The plasticizer can have formula (I) wherein n is an integer ranging from 3 to 8; or formula (II) wherein m is an integer ranging from 3 to 8.

The invention provides a three-dimensional printing method and device and a three-dimensional printing data processing method and device, and relates to the technical field of three-dimensional printing. The three-dimensional printing data processing method for digital light processing printing comprises the steps that three-dimensional data of an object to be printed are obtained, and the three-dimensional data comprise the positions of interfaces of different printing materials needed by the object to be printed; a diffusion structure is generated at the position of the interface, the diffusion structure is used for diffusing the printing material used later at the position of the printing interface in the diffusion structure, and the printing material corresponding to the diffusion structure is the printing material used first at the position of the printing interface; and generating three-dimensional printing data according to the three-dimensional data and the diffusion structure.

The invention discloses a release film inside and outside stripping type three-dimensional printer which comprises a workbench and a material pump, a transmission mechanism is installed on the workbench, a printing platform is installed on the transmission mechanism, a liquid guide hole is formed in the printing platform, a release film of a material groove divides the material groove into an air bin and a material bin, the air bin is filled with air, and the material bin is filled with material. Photosensitive resin is contained in the stock bin, the material pump is used for introducing the photosensitive resin in the stock bin into the demolding hole of the model through the liquid guide hole, and the release film and the model form an internal and external bidirectional stripping mode in combination with the adjustment of the pressure of the gas bin. The invention further discloses a three-dimensional printing method. The photosensitive resin in the trough is injected into the demolding hole of the model through the material pump, so that the release film is separated from the model from the inner direction and the outer direction of the model, and the stripping speed and the printing speed of the release film are increased.

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

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.

Five-axis additive and subtractive machining equipment and a control method thereof.The five-axis additive and subtractive machining equipment comprises a five-axis additive and subtractive machining machine (100) and a laser head protection device (200), the five-axis additive and subtractive machining machine (100) comprises a three-dimensional printing shaft (140), a main shaft (150) and a rotary table (131), the three-dimensional printing shaft (140) is provided with a laser head (141), and the laser head protection device (200) comprises a mounting block (220) and a protection cover (210) used for covering the laser head (141). The protective cover (210) is connected to the mounting block (220) through the cooperation of the clamping groove (212) and the clamping convex edge (221), the protective cover (210) can be connected with or separated from the mounting block (220), and the upper plane of the protective cover (210) is provided with a magnet (211) used for being connected with a three-dimensional printing shaft (140). The control method comprises the following steps: performing additive machining and subtractive machining on the part, separating the protective cover (210) from the laser head (141) before the additive machining, and covering the laser head (141) with the protective cover (210) before the subtractive machining. Through continuous switching machining of additive and subtractive machining and arrangement of the laser head protection device convenient to disassemble and assemble, the machining problem of parts with complex shapes such as special-shaped metal parts is solved, and the machining precision and the machining efficiency are improved.

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 invention discloses a butt joint conveying structure and a three-dimensional printing material management system. The butt joint conveying structure comprises a container, a rotating part and a butt joint assembly. The container is provided with a containing cavity and a butt joint part with a receiving hole, the rotating piece is provided with a first butt joint hole and a first matching part, and the rotating piece rotates between a first position and a second position around a rotating axis relative to the butt joint part and is limited by the butt joint part in the direction of the rotating axis; the butt-joint assembly is provided with a conveying channel used for conveying materials and a second matching part which is connected with the first matching part in an inserted mode and forms rotation stopping matching, so that the butt-joint assembly drives the rotating piece to rotate, and when the rotating piece rotates to the first position, the rotating piece shields the receiving hole, and when the rotating piece rotates to the second position, the receiving hole shields the receiving hole. The conveying channel communicates with the containing cavity through the first butt joint hole and the receiving hole. The three-dimensional printing material management system comprises the butt joint conveying structure. By adopting the technical scheme, the phenomenon that the receiving hole cannot be tightly changed due to falling deformation of the top cover can be avoided.

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.

The present disclosure provides a system and method for three-dimensional (3D) printing. The system comprises a post-treatment device. The post-treatment device comprises: a material receiving mechanism, which comprises a material receiving body, the material receiving body being configured to bear a 3D-printed object having a redundant printing material; and a driving mechanism, which is configured to allow the material receiving mechanism to rotate from a first state to a second state, so that the redundant printing material drips off of the 3D-printed object, wherein the 3D-printed object has at least two different inclination angles. The technical solution of the present disclosure effectively solves the problem in the prior art of methods for separating a redundant printing material from a 3D-printed object having a poor separation effect and low efficiency.

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.

In example implementations, a three-dimensional printing kit for printing a colorless three-dimensional object in a three-dimensional printing system is provided. The three-dimensional printing kit includes a build material and an aqueous ultraviolet (UV) fusing agent. The aqueous UV fusing agent includes water in greater than 50 weight percent of the aqueous UV fusing agent and a UV absorber cyclodextrin complex.

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.

Embodiments of the present disclosure provide three-dimensional (3D) printing methods, systems, and devices for target objects, and relate to a field of image data processing technology. The method includes performing a layering process to a 3D model of a target object and designing a printing path sequence, after each layer of the print is completed, according to a current layer 3D model and point cloud data of a single-layer 3D model corresponding to the current layer 3D model, performing the inspection of a height difference, a horizontal dimension difference and a void region in the printing, and according to the inspection result, performing timely feedback and adjustment, which can not only improve the professionalism, stability and efficiency of the printing, but also improve the similarity between the printed physical object and the target object, resulting in achieving a more accurate 3D printing.

A printing bed for a three-dimensional (3D) printer includes an upper surface configured to have a plurality of droplets land thereon to form a first layer of a 3D object. The printing bed also includes a support structure. In response to the 3D object having an overhang with an angle that exceeds a predetermined threshold, the support structure is configured to actuate from a first position into a second position to support the overhang.

A computer system for dynamically controlling printing parameters within a three-dimensional printer receives an indication for printing a target object by the three-dimensional printer. The computer system accesses a materials attribute dataset. The materials attribute dataset describes different material properties of a plurality of thermoset materials or mixtures thereof. Based upon the materials attribute dataset, for each of the plurality of extruders, the computer system selects one or more thermoset materials among the plurality of thermoset materials for each of the plurality of extruder to form an extrudate and determines an extrusion configuration for the selected one or more thermoset materials. The computer system then generates a command to cause the plurality of extruders of the thermoset three-dimensional printer to implement the extrusion configurations for the plurality of extruders while printing the target object.

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, devices, and systems for the production of at least one requested 3D object and for removal of a remainder material. The removal may be accomplished when the remainder material exhibits challenging conditions during removal while being safe for a user, the conditions comprising temperature, reactivity, bridging tendency, or possible loss of fluidity.

The utility model discloses a light source mechanism and three-dimensional printing equipment. Wherein the light source mechanism at least comprises a movable light path changing assembly, a first light source assembly and a second light source assembly, the first light source assembly and the second light source assembly are respectively used for emitting light rays with different wave bands, and the light path changing assembly is used for changing light path tracks of the light rays emitted by the first light source assembly and the second light source assembly. According to the utility model, the technical problem that the spectrum coverage rate is greatly limited in order to ensure the light combination efficiency in the prior art is solved.

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.