1653 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.

An online monitoring device for internal defects in metal selective laser melting is proposed, the online monitoring device includes a metal selective laser melting system, a signal acquisition system, and a signal processing system, the metal selective laser melting system realizes a three-dimensional (3D) printing of metal members and prints metal members with different types or levels of defects; the signal acquisition system is connected with the metal selective laser melting system, and is configured to acquire an acoustic emission signal in the 3D printing process of the metal members; the signal processing system is connected with the signal acquisition system, and is configured to extract characteristic parameters, establish a machine learning model, and discriminate and classify unknown signals in a printing process through using the machine learning model, so as to realize online monitoring of internal defects in the metal selective laser melting system.

The invention provides a fault detection method, device and equipment for three-dimensional printing equipment. The method comprises the steps that printing raw material stress data and printing platform pressure data of a feeding system of the three-dimensional printing equipment are obtained; the printing raw material is detected according to the printing raw material stress data and a preset stress threshold value, and a printing raw material detection result is obtained; a printing head is detected according to the printing platform pressure data, and a printing head detection result is obtained; and determining a fault detection result according to the printing raw material detection result and the printing head detection result. The printing raw material stress data and the printing platform pressure data are obtained, the printing raw material and the printing head are detected respectively, and the fault detection result is determined according to the obtained printing raw material detection result and the printing head detection result, so that the method has the advantages of being convenient to operate and simple; and whether the printing raw material and the printing head break down or not can be detected at the same time, and the detection result is comprehensive and accurate.

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.

Devices, systems, and techniques are described for determining toolpaths for printing constructs with microarchitecture. For example, a method includes receiving, by processing circuitry, imaging data representative of a target structure; determining, by the processing circuitry and based on the imaging data, a map of material tracks for the target structure; determining, by the processing circuitry and from the map of material tracks, one or more toolpaths for depositing material to form a construct representative of the target structure; and generating, by the processing circuitry and based on the one or more toolpaths, computer code that defines a three-dimensional (3D) printing process for a printing nozzle to deposit the material to form the construct.

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.

The invention provides gastric residence systems with specifically tailored architectures and methods for making such systems. The components of the gastric residence systems can be manufactured by three-dimensional printing or by co-extrusion. The ability to construct precise architectures for the systems provides excellent control over drug release, in vivo stability, and residence time of the systems.

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 relates to the field of additive manufacturing, in particular to a powder supply system and a three-dimensional printer. The powder supply system comprises a first stock bin, a second stock bin, a powder supply device and a powder supply device, the driven part is located at the discharging port of the first stock bin, the driven part is provided with a powder containing area, and the powder containing area is used for receiving powder discharged from the discharging port of the first stock bin; the transmission part is in transmission connection with the driven part; a discharging port of the first stock bin and a feeding port of the second stock bin are oppositely arranged, the second stock bin is used for driving the transmission part to make contact with the driven part when moving into a discharging range corresponding to the discharging port of the first stock bin, and the driven part is driven through the transmission part, so that powder in the powder containing area is discharged to the second stock bin through the driven part. The cost of the powder supply system can be reduced on the basis of guaranteeing that all the components of the powder supply system can supply powder cooperatively and cooperatively.

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.

A powder spreading device includes a device body, an adjustment assembly, and a dust removing mechanism. The adjustment assembly is provided on the device body. The adjustment assembly is configured to orient to a powder spreading surface. A first end of the dust removing mechanism is provided on the device body. The first end of the dust removing mechanism is covered over the adjustment assembly. A second end of the dust removing mechanism is communicated to the first end of the dust removing mechanism. The second end of the dust removing mechanism is configured to extend to the device body. A three-dimensional (3D) printing device and a 3D printing system are further provided.

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.

In one aspect, water dispersible support materials for use with a three-dimensional printing system are described herein. In some embodiments, a support material described herein comprises a phase change wax component and an ethoxylated polyethylene having the formula H—(CH2)m—(OCH2CH2)n—OH, wherein m is an integer from 22 to 60 and n is an integer from 2 to 200. In some cases, the phase change wax component and the ethoxylated polyethylene are each present in the support material in an amount of 20-80% by weight.

Aspects relate to a three-dimensional (3D) printing device including a gantry system configured to move a build platform between the different stages of the printing process. The stages may include, for example, printing, washing, and post curing. The gantry system includes a gantry rail and a gantry carriage. The gantry carriage can be removably attached to a build platform on which a printed object is printed and the gantry rail can then move the build platform between at least the printing and washing stages.

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.

Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a method of printing a three-dimensional object comprising: (i) depositing a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; (ii) selectively applying a binder fluid on at least a portion of the metal powder build material, wherein the binder fluid comprises an aqueous liquid vehicle and latex polymer particles dispersed in the aqueous liquid vehicle; (iii) heating the selectively applied binder fluid on the metal powder build material to a temperature of from about 40° C. to about 180° C.; and (iv) repeating (i), (ii), and (iii) at least one time to form the three-dimensional object.

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.