408 results about "3 dimensional printing" patented technology

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.

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.

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.

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 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.

The invention discloses a spiral powder feeding device, a moving trolley and a three-dimensional printing system. The powder feeding device comprises a powder feeding pipe, a spiral assembly, a heating piece, a first electric connecting piece and a second electric connecting piece. The powder feeding pipe is provided with a powder inlet communicated with the powder storage bin and a powder outlet communicated with the powder blending cavity, and the spiral assembly is arranged in the powder feeding pipe and rotates around a first axis relative to the powder feeding pipe; the heating piece is fixedly connected to the spiral assembly, the first electric connecting piece is fixedly connected to the spiral assembly and connected with a first electric wire of the heating piece, the second electric connecting piece is fixed relative to the powder feeding pipe and suitable for being connected with a heating circuit, and the first electric connecting piece and the second electric connecting piece are always electrically conducted in the relative rotation process, so that the first electric wire is suitable for being connected with the heating circuit. The moving trolley and the three-dimensional printing system comprise the spiral powder feeding device. By the adoption of the technical scheme, compared with the prior art, the three-dimensional printing piece is better in forming effect.

A three-dimensional printing kit includes a substantially colorless fusing agent and a color assist agent. The fusing agent includes a liquid vehicle including water, a co-solvent, and an amino acid stabilizer. The fusing agent further includes an infrared (IR) absorbing pigment dispersion including an IR absorbing pigment present in an amount ranging from about 0.01 wt % active to about 1.6 wt % active, based on a total weight of the fusing agent. The color assist agent includes a liquid vehicle including water and a plasticizing co-solvent, and a dye dissolved in the liquid vehicle. Also disclosed is a method of making a colored 3D printed object.

A hot end structure, a printing head of a three-dimensional printer, and a three-dimensional printer. The hot end structure includes: a hot end assembly, including a heat dissipation fin, a throat pipe, a heating block, and a nozzle that are connected in sequence; a heating seat assembly, used for heating the heating block; and a fixing assembly, used for detachably connecting the hot end assembly and the heating seat assembly, and when the hot end assembly is connected to the heating seat assembly, the heating block is fixedly attached to the heating seat assembly. The hot end assembly and the heating seat assembly are detachably connected by means of the fixing assembly, thereby facilitating maintenance and replacement of hot ends.

A computer-implemented method includes evaluating environmental parameters of an activity area where a robot will operate using sensors and analyzing the robot to identify parts needing a protective coating. A protective coating material and thickness are determined based on the environmental parameters and robot analysis. Robotic motion is simulated with the protective coating to optimize protection and mobility. The protective coating is applied to the robot, using three-dimensional (3D) printing, based on the simulation results.

Methods 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 % polymer build particles, and based on a three-dimensional object model, selectively applying a binder agent including an aqueous liquid vehicle and polymer binder particles onto the individual layers of the polymer build material. The polymer binder particles have or are capable of having a melting temperature lower than a melting temperature of the polymer build particles. The methods can include exposing the powder bed to heat at a temperature less than a melting point of the polymer build particles but greater than a melting temperature of the polymer binder particles. The heat causes the polymer binder particles to melt to adhere the polymer build particles together to form a three-dimensional object.

The invention discloses a multi-tool-head three-dimensional printer automatic identification and self-calibration method based on AI deep learning, and the method comprises the following steps: S1) a main control unit of a multi-tool-head three-dimensional printer issues a head changing instruction, and after a quick changing mechanism completes the switching of a printing head, a visual detection module is started; the visual detection module collects image data and Z-axis space depth information of the printing head and the printing platform. Through fusion application of AI deep learning and the multi-sensing technology, the calibration precision and stability of the multi-tool-head three-dimensional printer are remarkably improved, the system combines dual data support of the visual detection module and the pressure detection module, time sequence fusion and weighted analysis are carried out through the AI fusion control module, and the calibration precision and stability of the multi-tool-head three-dimensional printer are improved. The X-axis offset, the Y-axis offset, the Z-axis offset and the attitude deflection angle are accurately calculated, the problem of printing layer dislocation caused by printing head assembly deviation is effectively solved, the consistency of multi-material printing and multi-process connection is ensured, and the calibration precision is greatly improved compared with a traditional manual calibration method.

A three-dimensional (3D) printed object is described. The 3D printed object comprises a polymer. A surface of the 3D printed object comprises the polymer 5 and a UV absorbing colorant. The surface has a surface area roughness Sa (arithmetical mean height) of ≤5.0 μm. A method for preparing a three dimensional (3D) printed object having a smooth surface is also described.

The invention discloses a three-dimensional flexible distributed strain sensor and a strain interpretation method for temperature compensation thereof, and relates to the technical field of intelligent sensors. The three-dimensional flexible distributed strain sensor comprises a sensor body and a signal conditioning module; wherein the sensor body comprises an Ecoflex flexible substrate, a liquid metal microchannel network and an annular electrode array; the Ecoflex flexible substrate is internally provided with a three-dimensional communicated micro-channel structure formed by a three-dimensional printing sacrificial template process; the liquid metal micro-channel network is composed of gallium-indium alloy filled in the three-dimensional communicating micro-channel structure and comprises an X-direction micro-channel group extending in the X direction, a Y-direction micro-channel group extending in the Y direction and a Z-direction micro-channel group extending in the Z direction. The strain monitoring precision in a complex environment is remarkably improved, errors caused by temperature drift are effectively restrained, and the strain monitoring device has the advantages of being high in flexibility, high in stability and good in adaptability.

A three-dimensional printing system is provided that includes a tank, a textured substrate connected to the tank, and at least one electrode. The tank contains a liquid photopolymer resin and a lubricant. The textured substrate is configured to allow light to pass through into the liquid photopolymer resin. The at least one electrode is configured to control a flow of the lubricant on the textured substrate.

A three-dimensional printing subassembly is configured to detect debris within the photosensitive resin used within its resin tank. The subassembly includes a stepper motor configured to move a build platform with respect to the resin tank, and a motor step count module to count the motor steps initiated by the stepper motor during this movement. The subassembly analyzes information regarding the motor steps to determine information regarding lost motor steps and to ascertain the presence of debris within the resin.

A nozzle module and a three-dimensional printer are provided. The nozzle module includes a heat dissipation assembly, a locking assembly, and a nozzle assembly. The rotary member can rotate relative to the clamping ring, and a width of the opening is selectively reduced or increased when the rotary member rotates relative to the clamping ring, thereby enabling the clamping ring to clamp or release the nozzle assembly. Quick assembly and quick disassembly can be achieved, the assembly and the disassembly are convenient, and the assembly efficiency and the disassembly efficiency are improved.

We provide the system. [Solution] A data acquisition method for obtaining actual animal-based food shape data, An artificial intelligence means having a generative model for generating the three-dimensional shape of alternative ingredients from acquired shape data and similar data, A three-dimensional printing method for forming alternative food ingredients three-dimensionally using plant-derived raw materials based on the generated three-dimensional shape, A data processing means for feeding back evaluation data obtained from consumers to the generation model, A system that includes this.

The present disclosure provides systems and methods for the formation of three-dimensional objects. A method for forming a three-dimensional object may comprise alternately and sequentially applying a stream comprising a binding substance to an area of a layer of powder material in a powder bed, and generating at least one perimeter of the three-dimensional object in the area. The stream may be applied in accordance with a model design of the three-dimensional object. The at least one perimeter may generated in accordance with the model design.

In one example of a 3D printing method, a polymeric build material or a polymeric composite build material is applied. A portion of the build material is negatively patterned to define a removable build material portion and a remaining build material portion. The negative patterning includes selectively applying an anti-coalescing polymer solution including a polymer having pendent reactive functional groups, and selectively applying an anti-coalescing crosslinker solution including a multifunctional crosslinker. The pendent reactive functional groups react with the multifunctional crosslinker to form an insoluble gel network within the polymeric build material or the polymeric composite build material in the removable build material portion. Layers of a final 3D object are formed from at least a portion of the remaining build material portion based on a 3D object model. A portion of the polymeric build material or the polymeric composite build material in the removable build material portion remains physically separated from the layers.

The invention relates to the technical field of flexible electronic devices and conductive composite materials, and discloses a carbon nanotube assisted liquid metal dispersion method and application thereof in conductive ink and a flexible sensor. The method comprises the following steps: firstly, dispersing gallium-indium alloy and carboxyl-modified multi-walled carbon nanotubes in water in a mass ratio of 2: 1 through probe type ultrasound and water bath ultrasound respectively, then mixing the gallium-indium alloy and the carboxyl-modified multi-walled carbon nanotubes, and repeating the ultrasound process, so that liquid metal droplets are uniformly coated with the carbon nanotubes to form an LM (at) CNT composite dispersion liquid; adjusting the pH value of the dispersion liquid to 10.5-11.0, mixing the dispersion liquid with natural rubber latex, and adding super absorbent resin to prepare the conductive ink suitable for direct writing type three-dimensional printing. Through DIW printing and curing, the maximum GF value of the obtained flexible strain sensor in a strain interval of 1%-300% reaches 28, and the flexible strain sensor has resistance self-repairing performance, can accurately respond to human body part movement, and is suitable for the fields of wearable equipment, human body movement monitoring and the like.

According to one aspect, inks for use in three-dimensional (3D) printing systems are described herein. In certain embodiments, the composite inks described herein include a carrier ink containing a curable material and a solid powder filler dispersed in the carrier ink. In some cases, the composite ink, in the uncured state, has a highly accelerated life test (HALT) score of at least 2 when tested at 65°C for at least 14 days. Furthermore, in some embodiments, the composite ink, in the uncured state, has an average loss factor tan δ of 3 or less, or 2 or less, over an angular frequency range of 0.5 to 5 rad / s.

This invention belongs to the field of electromagnetic shielding, and relates to an electromagnetic shielding material with a macroscopic conical hole structure, its preparation method, and its application. The preparation method includes: S1. Adding graphene nanosheets and polylactic acid particles to dichloromethane to obtain a graphene composite dispersion; S2. Drying the graphene composite dispersion at room temperature in a fume hood to obtain a graphene / polylactic acid composite material; S3. Chopping the obtained graphene / polylactic acid composite material and feeding it into a benchtop extruder, extruding composite filaments for 3D printing via melt spinning; S4. Creating a 3D printing model on a computer, feeding the composite filaments into a 3D printer, and processing the material with a macroscopic conical hole array structure using computer-controlled 3D printing. This electromagnetic shielding material exhibits excellent electromagnetic shielding performance, has a simple processing technology, low equipment parameter requirements, and is suitable for industrial production.

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.

According to the design and manufacturing method of the orthodontic postoperative intermaxillary traction device based on the invisible orthodontic device, CT scanning is conducted on a patient, craniomaxillofacial and tooth three-dimensional data are collected, and preparation is made for obtaining three-dimensional virtual tooth data of the patient through manufacturing of an anhydrite tooth model; data of a patient are imported into cranio-maxillofacial surgical operation planning software, a cranio-jaw virtual model of the patient is established, a manufactured anhydrite tooth model is subjected to three-dimensional scanning, dentition data are obtained, a maxillary tooth bone section is moved to a target position through a simulated operation on the virtual cranio-jaw model, and the patient is subjected to cranio-maxillofacial surgical operation planning software. And then determining a target position of a mandibular tooth bone section based on a final occlusion relationship, importing dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and manufacturing a traction device by using a three-dimensional printing technology. According to the device, assistance of methods such as a dental arch splint and an intermaxillary traction nail is not needed, intermaxillary elastic traction can be carried out after an invisible orthodontic patient completes a orthodontic operation, and it is ensured that the occlusion relation after the orthodontic operation meets the requirement.

The present invention features a liquid, solvent-free, silica precursor and two-photon 3D printing process to meet the increasing needs of high-precision glass micro-optics and address the major limitations of current three-dimensional (3D) printing optics. The printed optical elements may be fully converted to transparent inorganic glass at temperatures as low as 600° C. with shrinkages as low as 17%. The present invention includes a complete process chain, from material development, printing process, and performance evaluation of the printed glass micro-optics. 3D printing of glass micro-optics with isotropic shrinkage, micrometer resolution, low deviation peak-to-valley value (<100 nm), and low surface roughness (<6 nm) has been demonstrated. The present invention enables the rapid fabrication of complex glass micro-optics previously impossible using conventional glass optics fabrication processes.