2966 results about "3d print" patented technology

A method of authenticating the printing of a three-dimensional (3D) article at a 3D printer according to a 3D print file describing a three-dimensional design is described. The method comprises: receiving an authentication request from a 3D print server that is associated with the 3D printer, the request comprising a unique design identifier associated with a 3D design file and a unique 3D printer identifier associated with a 3D printer, the received unique 3D design identifier being related to the received 3D printer ter identifier in accordance with a first relationship; using at least one of the received unique identifiers to access a verifying 3D design identifier and a verifying 3D printer identifier, the verifying identifiers being related to each other in accordance with a second relationship; comparing the first and second relationships between the received and verifying identifiers; generating an authentication signal if the first relationship corresponds with the second relationship; obtaining a decryption key associated with the received identifiers in response to the authentication signal; and transferring the decryption key to the 3D print server to authenticate and enable the printing of the 3D article on the 3D printer.

A microwave-induced heating of CNT filled (or coated) polymer composites for enhancing inter-bead diffusive bonding of fused filament fabricated parts. The technique incorporates microwave absorbing nanomaterials (carbon nanotubes (CNTs)) onto the surface or throughout the volume of 3D printer polymer filament to increase the inter-bead bond strength following a post microwave irradiation treatment and/or in-situ focused microwave beam during printing. The overall strength of the final 3D printed part will be dramatically increased and the isotropic mechanical properties of fused filament part will approach or exceed conventionally manufactured counterparts.

A 3D extrusion print process for producing multicolored three-dimensional objects is provided. The process produces mechanically stable, multicolored 3D objects with good color definition. The process according to the invention is based on coating, upstream of the printing head, of the polymer strand used for producing the actual object, and on fixing of the coating upstream of entry of the polymer strand into the printing head. Downstream of the extrusion process in the printing head, the coating remains predominantly at the surface of the extruded strand.

Osteogenesis scaffold such as for spinal fusion or an intermedullary nail includes a number of arcuate struts. The scaffold may have a functional modulus of elasticity that is a result of the modulus of the material of the struts together with the architecture of the struts, and may be within the range of 5 GPa and 75 GPa. An anisotropy of a physical property such as stiffness, compressive strength or elastic modulus corresponds to the same physical property of native bone in the vicinity of the intended implantation site.

An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carrier, compatible with an inkjet print head, wherein after removing the liquid carrier, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.

A computer implemented method and apparatus for storing and retrieving data embedded into the surface of a 3D printed object is described. The method and apparatus develops an electronic file used for printing a 3D object which embeds as structure into the 3D object, a 3D symbol matrix representative of data to be printed concurrently with the 3D object, such as a 3D barcode. A selected symbology is used for making the symbol matrix in accordance with the type of printing process to be used to print the 3D object.

The invention provides an aluminum alloy powder capable of being used for 3D printing and a preparing method and application of the aluminum alloy powder. The aluminum alloy powder comprises the following components including, by weight, 1.00%-10.00% of Mg, 0.10%-1.80% of Sc, 0.1%-1.60% of Zr, 0.05%-3.50% of Mn, 0.01%-0.90% of Fe, 0.01%-3.00% of Cu, 0.01%-3.00% of Si, 0.01%-3.50% of Zn, 0.01%-0.08% of Cr, 0.01%-0.08% of Ni and the balance Al. A 3D printing workpiece prepared through the aluminum alloy powder has the beneficial effect of being fine in tissue, good in mechanical property, high in stress corrosion resistance and the like.

The invention provides a three-dimensional part printing method. The method comprises the following steps that firstly, metal slurry is prepared; secondly, parameters of a parison model are designed; thirdly, a parison is printed in a three-dimensional manner and solidified in an entire manner, wherein the third step comprises that the metal slurry is placed in a stock bin of a slurry pressure storing and quantitative feeding system of a three-dimensional printing device; the metal slurry is conveyed to the portion of a slurry three-dimensional printing spraying head of the three-dimensional printing device through the slurry pressure storing and quantitative feeding system in a channelized manner; according to a scanning route of each layer, the slurry three-dimensional printing spraying head is controlled to squeeze out the metal slurry, micro-cell three-dimensional stacking building is carried out on a printing platform of the three-dimensional printing device, and during the stacking building, thermal initiation solidifying and/or chemical solidifying initiation are/is carried out; fourthly, degumming is carried out on a solidifying type parison, and solvent and a rubber matrix are removed; and fifthly, sintering is carried out, and a metal part which is in a target shape is obtained. According to the method, the operability is strong, the technology is stable, and the wide application prospect is achieved.

The invention provides a photosensitive resin used in 3D printing, and its preparation method. The photosensitive resin is prepared by using 35-40 parts of acrylate, 35-40 parts of epoxy resin, 20-30 parts of a diluent, 0.1-5 parts of an antifoaming agent, 0.1-5 parts of a leveling agent, 1-10 parts of a cationic initiator and 1-10 parts of a free radical photopolymerization initiator. The photosensitive resin prepared in the invention has the characteristics of fast forming speed, small irritation, simple process, low cost and the like, and can be directly applied in 3D printing to make products with complex structures.

Techniques for monitoring a three-dimensional (3D) printer during the performance of a print job are described herein. An example of a system in accordance with the present techniques includes a camera to generate an image of a 3D print job in progress. The system also includes a baseline image generator to generate a baseline image based on a 3D model of the object to be printed. The system also includes a monitoring engine to compare the image with the baseline image to determine a status of the 3D print job and trigger an alarm if the 3D print job fails.

The invention discloses a 3D printing technology fill path generation method based on optimization of a scanning line dip angle. The generation method comprises the following steps: determining a fill path interval, layer thickness, and an SLC (Single Level Cell) file of a to-be-processed entity; with the fill path interval as an offset distance, performing offset to obtain an offset polygon Omega; according to processing efficiency and printing precision requirements, judging the priority principle adopted by a current printing layer; if the priority principle refers to efficiency priority, determining the scanning line dip angle in an efficiency priority way, and if the priority principle refers to precision priority, determining the scanning line dip angle in a precision priority way; and finally, generating an internal fill path according to a point at which a scanning line with the determined dip angle is crossed with the offset polygon Omega. According to the provided 3D printing internal fill path generation method based on the optimization of the scanning line dip angle, the scanning line dip angle in generation of parallel reciprocating fill paths is optimized, the processing efficiency and the printing precision are further promoted, and the method is simple and effective, and good in universality.

The invention discloses a 3D-printed gradient-diameter medical porous metal bone tissue scaffold and aims to solve the problems that a single repeated microporous structure in the prior art is adverse to bone tissue ingrowth and a bone tissue implant has difficulty in bony healing with self-bones. The scaffold is in a hexahedron structure as a whole, and comprises components A, components B and components C in tight arrangement, wherein the components A are arrayed on an outermost layer of the hexahedron structure; the components B are arrayed on a secondary outer layer; and the components C are arrayed on the innermost layer; all the components A, B and C are in a hexahedron frame structure; the pore diameter of the components A is greater than that of the components B; and the pore diameter of the components B is greater than that of the components C. Through the reinforcing structural design, the gradient-pore tissue engineering bone scaffold is produced; through regulating the ingrowth of bone tissues, fibroblasts and the like by gradient-change pores, the optimal bone healing can be achieved finally.

The invention provides an electric conduction compound ABS/PLA material for 3D printing wires. The electric conduction compound ABS/PLA material is prepared from the following raw materials in percentage by weight: 15-30% of a synthetized material ABS by using a bulk method, 15-30% of a synthetized material ABS by an emulsion method, 1-10% of copolymers of styrene -acrylonitrile -2-methylpropenoic acid glycidyl ester, 0.01-0.05% of triphenylphosphonium bromide, 5-15% of metallic nickel powder , 30-50% of polylactic acid , 1-5% of walled carbon nanotubes and 1-5% of graphene microchips. According to the electric conduction compound ABS/PLA material disclosed by the invention, the nickel powder, the graphene microchips and the carbon nano tubes are optimized and collocated, so that the requirements for electrical conductivity by using lower volume resistivity under the low content of an electric conduction additive are met, the ABS material mixed in different particle diameters enables the particle diameters in the compound material to present bimodal distribution, and the toughness is enhanced; the consistency and the cocontinuity of ABS and PLA are good, so that the electric conduction compound ABS/PLA material is particularly suitable for strip-shaped high electric conduction materials required by 3D printing.

The invention discloses photo-curable 3D (three-dimensional) printing aluminum-base ceramic slurry and a method for preparing ceramic mold cores. The photo-curable 3D printing aluminum-base ceramic slurry comprises ceramic formula powder, photo-curable resin systems and additives. The photo-curable 3D printing aluminum-base ceramic slurry and the method have the advantages that the photo-curable 3D printing aluminum-base ceramic slurry is high in solid phase content, low in viscosity and applicable to photo-curable 3D printing photo-polymerization, the problems of high viscosity and poor flowability of existing slurry for photo-curable 3D printing ceramics, easiness in agglomerating ceramic particles in the existing slurry, uneven dispersion of the ceramic particles, low solid phase contents and the like can be solved, and application of photo-curable 3D printing to ceramic precision components can be expanded.

There is provided a support structure for use with 3D printing of objects from computer-aided designs. The support structures include fine points that contact the down-facing surfaces of the 3D object being printed in order to adequately support the 3D object while also being adapted for easy removal after the 3D print process is complete. The fine points are possible by controlling the operation of the dispenser to provide a precise amount of material in a precise location. The dispenser jumps from a first fine point to a second fine point by retracting the print material after the first fine point is printed and then moving the dispenser vertically relative to the first fine point before the dispenser is moved horizontally to the second fine point.

The invention discloses a thermo-curable 3D printing photosensitive resin and a preparation method and an application thereof. The photosensitive resin includes, by weight, 50-70 parts of a prepolymer, 30-50 parts of a diluent, 1-5 parts of a photo-initiator and 0.5-5 parts of a thermal-initiator, wherein the decomposition temperature of the thermal-initiator is higher than or equal to 100 DEG C when the half-life period thereof is 1 h. After photo-curing 3D printing shaping, the 3D printing photosensitive resin can be subjected to curing by heating as a post-curing method with a stable constant temperature heating device, such as a drying box and the like, so that the 3D printing photosensitive resin develops application in a non-transparent sample, a sample having complex shape, an ultra-thick sample, a colored sample and the like, and enables the samples to have better mechanical performances.

The invention relates to the technical field of 3D printers and printing methods, in particular to a rapid prototyping SLA 3D printer. The rapid prototyping SLA 3D printer comprises an SLA 3D printer body, wherein the SLA 3D printer body comprises a hollow cabinet body and a support which extends upwards along one side surface of the cabinet body, wherein a laser scanning device is arranged at the front end of the bottom surface of the cabinet body, a reflecting mirror is arranged at the center of the bottom surface of the cabinet body, a resin trough is arranged right above the reflecting mirror, the bottom surface of the resin trough is fixedly provided with a piece of high-transparency quartz glass, the high-transparency quartz glass is fixedly arranged on an iron plate, the iron plate is fixedly connected with a motor on the bottom surface of the cabinet body, a lifting platform is arranged right above the resin trough, the support is provided with a vertical slide rail, and the lifting platform can slide up and down along the vertical slide rail. The invention also discloses a printing method of the rapid prototyping SLA 3D printer. Compared with the prior art, the rapid prototyping SLA 3D printer has the advantages that the prototyping speed is high; since a downward-pulling mechanical structure for eliminating the vacuum force is arranged, the rate of finished products is greatly increased, the precision is high, and the printer is particularly suitable for producing a prototype with high precision requirement and a complicated structure; the structure is simple, the operation is convenient, and the production cost is greatly reduced; therefore, the rapid prototyping SLA 3D printer can be widely popularized and used.

The invention discloses an ABS (acrylonitrile butadiene styrene) material used for 3D (three dimensional) printing. The ABS material consists of the following materials in parts by weight: 50-70 parts of ABS resin, 10-30 parts of flexibilizer, 7-9 parts of diffusant, 3-5 parts of lubricant and 5-15 parts of binder. The invention further discloses a process for preparing the ABS material. According to the invention, main body ABS with different rubber grain sizes is mixed and aggregated, glass fiber, and the like, are added, so that ABS resin is strengthened and toughened, and therefore, the ABS resin can be used for 3D printing better. The ABS material provided by the invention can be used for preparing a printing material for three-dimensional printing, fusion-depositing and rapid-forming.

The invention discloses a complex fractured rock mass physical model manufactured based on 3D printing production and a modeling method. By using 3D printing, a complex fractured network model entity is reconstructed and a model suitable for an indoor analog simulation experiment is established; the complex fractured rock mass physical model comprises a discrete fracture network DFN model and an entity discrete joint network DFN model. Based on the 3D printing, the complex fractured network model entity can be reconstructed and the model suitable for the indoor analog simulation experiment is established, and an effective method can be provided for an indoor laboratory research on complex fractured rock mass mechanical behaviors. A reliable and effective method is provided for the rock mechanical test field by adopting fractured rock mass model reconstruction and fractured network entity model construction through the 3D printing; with the help of the 3D printing technology, the problems that modeling is difficult to conduct and the cost is high in the current complex fractured rock mass physical model indoor experiment can be effectively solved.

The invention provides a multicolor three-dimensional forming device for a 3D printer and a forming method. The device includes a rack, as well as a feeding mechanism and a discharging mechanism both mounted on the rack, wherein the feed mechanism includes a feeding motor, a reloading motor, a gear shaft,a shifted gear, a plurality of feeding gears, a plurality of extruding wheels and a controller; the discharging mechanism includes a guide bin and a spray nozzle; the controller is used for controlling the feeding motor and the reloading motor to provide output power; under the control of the controller, material silks of different colors can be replaced through the closed cooperation of the gear shaft, the shifted gear, the feeding gears and the extruding wheels. The multicolor three-dimensional forming device for the 3D printer utilizes the two motors to enable the material silks of different colors to be sprayed from the same sprayer when the 3D printer is printing, so that products of various different colors can be printed, and the colors of the products are diversified; furthermore, due to the fact the sprayer does not need to be shifted during reloading, the cohesion degree is good during color changing, and manufacturing products are more exquisite.

A high precision light-cured resin molding 3 D (three dimensional) printer comprises a LED (light-emitting diode) light source, an optical lens is arranged between the periphery of the LED light source and a Fresnel lens on the upper part, the size of the Fresnel lens can cover a LCD screen, the LCD screen is arranged in a LCD screen outer frame, and the upper surface of the LCD screen and the upper surface of the LCD screen outer frame are horizontal; a liquid storage tank is placed just above the LCD screen by a liquid storage tank fixing frame; a liquid storage tank bottom plate is a plastic film material, and is tensioned; and the liquid storage tank bottom plate is covered with a high light transmission release type membrane, the release type membrane is easy to be stripped from printed cured resin, liquid resin is stored in the liquid storage tank; a print platform is arranged on the upper part of the liquid storage tank, the upper surface of the print platform is connected with a fixed plate, the fixed plate is connected with a lifting arm, the lifting arm is fixed on a lifting column, and the lifting column is arranged on a lifting base. The high precision light-cured resin molding 3 D printer realizes the high precision and high efficiency 3D print, and has the advantages of compact structure, and small volume.