82 results about "Direct printing" patented technology

A system for direct printing on a three dimensional article includes a plurality of print stations, each print station comprising a print head for delivering ink; a mover having a holder for securing a three dimensional article and at least one magnet; and a plurality of tiles each comprising energizable coils for producing an electrical field for effecting the at least one magnet in the mover to controllably float the mover about the plurality of tiles; where the plurality of print stations are proximal to at least some of the tiles in the plurality of tiles; and where the mover is configured to have six degrees of motion relative to the plurality of tiles to position a portion of the surface of the three dimensional article proximally normal to the print head. The system may further include curing stations, vision or inspection stations, and / or pre-treatment stations.

The present invention discloses a 4D printing method, apparatus, and application thereof, including processes such as proportioning of multi-viscosity liquid components, flow mixing, degassing, temperature-controlled curing, filling, and final curing. Based on an integrated molding design concept, the method enables the preparation of pneumatically driven, self-propelled, deformable bionic structures (referred to as "bionic deformable actuators"). The apparatus and method of the present invention can produce functional components made of elastic, flexible materials with a viscosity range of 2,000 to 38,000 cps. This greatly simplifies the preparation process of bionic deformable actuators, enabling direct printing and single-stage molding without the need for secondary processing.

The invention discloses a design and preparation method of a personalized gradient thickness invisible orthodontic appliance model, relates to the technical field of tooth orthodontics, and aims to overcome the defects that the thickness is uncontrollable and preset mechanical properties cannot be accurately realized when an invisible orthodontic appliance is manufactured by a traditional hot press molding process. The method comprises the following steps: firstly, reconstructing a personalized dental model containing tooth roots and bone tissues based on CBCT data of a patient; designing a plurality of gradient thickness appliance schemes; through finite element analysis and simulation, selecting an optimal scheme which is most favorable for realizing correction effects such as overall movement of teeth; and finally, integrally forming and manufacturing the selected appliance by adopting a direct 3D printing technology. The direct 3D printing ensures that the appliance can be manufactured in a high-precision and high-fidelity manner from a complex gradient thickness structure with thick gingiva and thin occlusal surface, so that the optimized mechanical property verified by simulation can accurately reproduce in a real object, the inherent defects of a hot-pressing film process are thoroughly overcome, and the accuracy and predictability of correction are remarkably improved.

The invention relates to the technical field of energy storage materials, and provides a composite solid polymer electrolyte membrane and a preparation method thereof.The composite solid polymer electrolyte membrane is prepared through the steps that a polymer matrix serves as a matrix, a polar solvent is adopted for dissolving to form a pure polymer solution, then lithium salt and nematic phase liquid crystal E7 are added, a chiral dopant can also be added, uniform printing slurry is formed, and the composite solid polymer electrolyte membrane is obtained through 3D printing. And carrying out hot pressing treatment to prepare the composite solid polymer electrolyte membrane. The electrolyte membrane prepared by the invention has a controllable porous structure, a high dielectric constant and excellent piezoelectricity and energy storage performance, complex structures such as a three-dimensional grid and a porous structure can be directly printed, and the thickness and shape of the membrane can be accurately controlled by adjusting parameters such as a printing path, a layer height and filling density; the method is very suitable for the requirements of rapid customization of product shapes and sizes in the fields of flexible electronics, wearable equipment and the like. The invention also provides an application of the composite solid polymer electrolyte membrane prepared by the method in an energy storage device.

Method for manufacturing a flexible strain sensor, comprising: Placing a flexible substrate on a movable stage in a working chamber, in which the movable stage, suitable for a desired movement according to a control signal, and a nozzle, suitable for spraying towards an upper surface of the movable stage, are installed, and with which a first pressure control unit, suitable for controlling an internal pressure of the working chamber, is combined; and preparing a printing material mixture, which comprises metal nanoparticles and carbon nanotubes (CNTs) in a powder form, which is to be introduced into a printing material tank, which is provided with an upper outlet that communicates with a nozzle via a first communication line, and a lower inlet, with which a second pressure control unit, suitable for controlling pressure, is combined. Control, by means of a control unit, a movement of the movable stage by providing a predetermined motion control signal to the movable stage in order to move the flexible substrate at a desired speed along a path which corresponds to a predetermined conductor pattern of a strain sensor, Forming a relatively low-pressure atmosphere within the working chamber by operating the first pressure control unit and simultaneously a relatively high-pressure atmosphere at a lower inlet of the pressure material tank by operating the second pressure control unit, In parallel with controlling the movement of the movable stage, the printing material mixture is forcibly transmitted in an aerosolized state through the first communication line from the printing material tank to be sprayed through the nozzle towards a surface of the flexible substrate by means of a compression wave, which is caused by a pressure difference between the low-pressure atmosphere and the high-pressure atmosphere. Direct printing of a predetermined conductor pattern of the strain sensor onto the flexible substrate by a process in which the printing material mixture, which is extruded through the nozzle, collides with the surface of the flexible substrate to create cracks on the surface, and the CNTs penetrate into the cracks and are mechanically anchored to the flexible substrate, and then the following metal nanoparticles and CNTs of the printing material mixture are deposited in a predetermined width and height on the surface of the flexible substrate. Connecting a first and a second lead wire, which extend electrically to protrude from the flexible substrate, to both ends of the predetermined conductor pattern of the strain sensor and Binding a flexible cover, which has the same size as the flexible substrate, to the surface of the flexible substrate on which the predetermined conductor pattern is printed, so that the predetermined conductor pattern is inserted between the flexible substrate and the flexible cover.

The ceramic substrate (1) is monolithic, and it contains an integrated channel (2) for the passage of heat-transfer medium. From the outside the ceramic substrate (1) is adapted for direct printing using conductive patterns (3, 4) and for the direct mounting of electronic components (5) generating waste heat, particularly for the power module applications, for the effective dissipation of waste heat.

The invention discloses an irregular three-dimensional model topological optimization method, which comprises the following steps of: importing an object to be optimized in a three-dimensional model file format, converting the object to be optimized into a mask matrix through a ray scanning method, and acquiring a voxel center coordinate; voxel random sampling coordinates in the model are substituted into a displacement prediction neural network for pre-training, a loss function is set based on a physical information neural network and a minimum potential energy theorem, and a penalty function is introduced and combined with hard displacement constraint to realize displacement fixed constraint; and performing cross training on the density prediction neural network and the displacement prediction neural network to obtain a topological optimization result. According to the method provided by the invention, the problems that a professional needs to apply professional software to carry out topological optimization on the irregular three-dimensional model and takes a long time, and the optimization result has an islanding effect and the like in the related technology are solved. The three-dimensional model improved by the method can be directly printed by utilizing three-dimensional printing equipment, and finally a real object corresponding to a topological optimization result can be obtained.

The embodiment of the invention provides a refrigerator and a refrigerator door thereof, the refrigerator comprises a door body panel, the door body panel is sequentially provided with a steel plate base material layer, a decoration layer and a transparent protection layer from inside to outside, the decoration layer is printed on the outer surface of the steel plate base material layer in a 3D mode to form decoration patterns, and the outer surface of the decoration layer is coated with the transparent protection layer. The steel plate base material layer serves as the innermost layer of the door body panel and provides overall strength for the refrigerator door, decorative patterns are formed on the outer surface of the steel plate base material layer through the 3D printing technology, highly-personalized appearance design is achieved, and aesthetic requirements of different users are met; complex and fine patterns are realized, and the visual effect is improved; different colors and textures of the decorative layer can be selected as required, so that the market competitiveness of the product is improved; and the ink is directly printed on the steel plate, thereby reducing additional bonding steps and improving the production efficiency. The transparent protective layer is coated on the outer surface of the decorative layer to protect the decorative layer from being scratched, abraded and chemically corroded; and the durability and the service life of the whole door body panel are enhanced.

The utility model discloses a novel heat exchange module control box of control technical field, including host case, the bottom fixedly connected with a bottom plate of host case, the top fixedly connected with display screen control panel of bottom plate, the one end fixedly connected with bottom electric control board of bottom plate close to display screen control panel, and the top electric control board is provided with in the top of bottom electric control board of bottom plate. Host case inside is provided with special installation chamber, and the fixing, installation and wiring work of circuit element, terminal are convenient, guarantee the neat and safety of internal circuit, and the maintenance process is simplified. Adopt microprocessor as core control unit, realizes accurate temperature control and circulating pump speed adjustment and so on function, and is equipped with multiple protection mechanism (such as overload protection, short circuit protection etc.), ensures the stable operation of system and personnel safety. Integrated efficient data processing module can automatically record the data of each operation, and supports data export or direct printing output, is convenient for subsequent analysis and archives.

A method of optimizing strength in an improved mold for a cast component. The method may include the steps of evaluating a flaw in an existing mold, adding external reinforcement features to a design of the improved mold, manufacturing the improved mold in an additive manufacturing process, and casting the cast component in the improved mold.

A method and system for fabricating reflective traffic signs for scale model applications. A scaled traffic sign image is generated using graphic design software and printed onto a transparent or reflective medium. The printed signage layer is bonded to a reflective substrate and affixed to a rigid backing material such as aluminum. The sign is then mounted on a scale stand formed from metal, plastic, or wood. Various fabrication techniques may be used, including water transfer of printed images using clear tape, printing onto acetate, or direct printing onto reflective material. In some embodiments, 3D-printed structural supports are used to house light-emitting diodes (LEDs) to simulate illuminated signage. The resulting scale signs replicate the appearance and reflective characteristics of full-size traffic signs and are suitable for use in model railroads, dioramas, architectural layouts, and educational displays.

The invention relates to the technical field of additive manufacturing, in particular to an advanced packaging RDL additive manufacturing method based on electric field driving spray deposition, and adopts an electric field driving spray deposition micro-nano 3D printing technology. Successively printing a first dielectric layer and a first circuit pattern layer formed by printing conductive paste on the substrate according to a set printing mode and process parameters; the method comprises the following steps: firstly printing a first dielectric layer, then continuously printing a second dielectric layer, punching the second dielectric layer, filling holes with conductive slurry to realize inter-layer circuit interconnection, then printing a second circuit pattern formed by printing the conductive slurry, and repeating the steps of printing the dielectric layer and the circuit pattern and the steps of punching and filling holes so as to complete the preparation of the multilayer RDL; according to the method, integrated rapid manufacturing of the multi-layer rewiring structure is achieved through direct printing and interlayer interconnection of the dielectric layers and the high-precision wires, the problems that a traditional RDL technology is complex, long in period and poor in flexibility are solved, particularly, the method has unique advantages in the design verification stage, and rapid prototype verification of the RDL can be achieved.

The invention discloses a preparation method of porous ceramic with a non-uniform fusion structure, which comprises the following steps: step 1, constructing a fusion function, and determining parameters of the fusion function; 2, preparing a wax pattern negative template; step 3, preparing ceramic slurry; step 4, dipping and freezing; step 5, low-pressure drying; and 6, sintering to obtain the TPMS structure porous ceramic. The invention further discloses the porous ceramic with the non-uniform fusion structure. The invention further discloses application of the porous ceramic with the non-uniform fusion structure in the field of bionic bone scaffolds. According to the method, the fusion function is constructed by fusing the G-shaped function and the TPMS function, so that non-uniform fusion of various hole patterns is realized; the mode of wax negative template freezing casting and indirect forming is adopted, the design freedom degree of a complex structure is reserved, meanwhile, the problems of resolution limitation, shrinkage deformation, supporting difficulty and the like during direct 3D printing of the porous ceramic are solved, and the use effect is good.

The invention discloses a novel electronic price tag FPC prepared based on weldable silver paste, which comprises a base material printed with a silver paste circuit, a display unit used for displaying a price tag identifier, a driving unit, a communication unit and a power supply unit welded with the silver paste circuit, and the silver paste circuit is prepared by mixing and printing composite silver powder, an organic carrier and a modifier. The preparation method comprises the steps of (1) substrate pretreatment, (2) preparation of weldable silver paste, (3) silver paste printing, (4) low-temperature curing and (5) component welding. The conductive circuit is formed through direct printing and low-temperature curing of the weldable silver paste with low surface energy and high oxidation resistance, low-temperature welding of components can be realized without a gold plating layer, the process is simple, the production period is greatly shortened, and the equipment cost and the material cost are effectively reduced; the electrical resistivity after curing can be greatly reduced, the matching property of a silver paste circuit and a base material is better, and the bending resistance is effectively improved.

A polymer three-dimensional (3D) printing methodology is disclosed for freeform fabrication of polymeric structures under ambient conditions without the use of printed support structures, without use of a support bath, and the like. The build material can be dissolved in a suitable solvent for 3D printing. The polymer solution can be printed (e.g., continuously printed using a moving dispensing nozzle) in air without the use of supports (e.g., without the use of a support bath, a concurrently printed support posts, or the like) while a nebulized coagulation agent is dispersed alongside the printed polymer solution to at least partially coagulate the polymer solution and form an intermediate article. The self-supporting intermediate article may then be immersed in a post-printing coagulation solution to remove some or all of the remaining solvent, causing the build material to fully solidify to form a finished article from the intermediate article.

The invention discloses a three-dimensional printing process based on UV digital direct injection and a printed textile product, and relates to the technical field of fabric digital printing. The three-dimensional printing technology comprises the steps that a textile fabric is spread on a workbench in the UV digital printing equipment, direct injection printing is conducted on the textile fabric, instant curing is conducted under UV irradiation, and the printed textile fabric is obtained; ink for direct injection printing is selected from acrylate UV oil-based ink, the content of a monofunctional acrylate monomer in the acrylate UV oil-based ink is not less than 86 wt.%, and the viscosity of the acrylate UV oil-based ink at 25 DEG C is 4-8 mPa.s. According to the technology, direct injection forming can be achieved, prime coat treatment and drying treatment are not needed, the technology can be compatible with fabrics made of various materials, and patterns with the embossment effect can be formed through stacking printing; the acrylic UV oily ink component is preferably selected, so that printed patterns have better adhesion, high tensile strength, low possibility of falling off and good water resistance.

The application belongs to the field of internal combustion engine parts design and manufacturing, and discloses a basalt fiber thermal insulation material design method based on 3D printing. The method comprises the following steps: S1, obtaining a three-dimensional model of a part to be wrapped; S2, preprocessing the three-dimensional model to export a three-dimensional model that can be directly printed, and performing 3D printing on the part according to the three-dimensional model; S3, calling the design parameters of the thermal insulation material according to the product database; S4, modifying the sample fitting based on the printed model; and S5, outputting the design drawing. The method prints the part object by using the 3D printer, can more intuitively evaluate the size and fit of the designed thermal insulation material for wrapping the part, adjusts the drawing in time according to the fitting, saves the part mold opening cost, improves the accuracy of product design, and simplifies the design process.

The invention discloses a bracket-free invisible orthodontic appliance based on direct 3D printing and a digital design and manufacturing method of the bracket-free invisible orthodontic appliance. According to the method, a digital closed-loop process is constructed; firstly, a correction target is set through intraoral scanning and digital tooth arrangement; constructing a smooth envelope space of the appliance by utilizing a contraction wrapping algorithm; accurately segmenting the dental crown by adopting an AI technology based on PointNet + + so as to define a force boundary; generating an appliance digital model with an accurate form and stable mechanics through a thickness control and edge optimization algorithm; finally, based on the DLP technology, the orthodontic appliance is directly printed with biocompatible resin, and the performance and safety of the orthodontic appliance are ensured through strict post-treatment such as secondary curing. According to the method, a traditional film pressing process is omitted, accumulative errors are eliminated fundamentally, personalized gradient design of mechanical properties of the appliance can be realized through process control, and an invisible correction technology is marked to step from shape matching to function matching.

The invention discloses an MXene composite bacterial cellulose intelligent response supercapacitor and application thereof, and belongs to the technical field of capacitor preparation. The invention provides an MXene / bacterial cellulose composite conductive ink system based on 3D printing, direct printing of the MXene / bacterial cellulose composite conductive ink system on a liquid crystal elastomer film is realized, and an intelligent response micro supercapacitor integrating a finger-shaped supercapacitor and a thermal driving film is prepared.

The utility model relates to the technical field of biology, in particular to a component scale marking test tube for separating mesenchymal stem cells. Comprising a test tube body and an auxiliary assembly, the bottom of the test tube body is provided with a supporting part, the side face of the test tube body is provided with an identification area and scale marks, and the auxiliary assembly comprises a threaded cover, a first sealing gasket, a second sealing gasket and a ventilation component. The first sealing gasket and the second sealing gasket improve the sealing performance, the supporting part can facilitate direct placement of the test tube body without a test tube rack, and the identification area is printed with environment-friendly ink, can be kept clear for a long time and is used for pasting or directly printing information such as dates, numbers, sources and purposes, so that the convenience and traceability of storage management are improved, and rapid marking is facilitated; the scale marks facilitate observation of the liquid level of internal liquid, so that quick marking is realized during use, the test tube can be placed and used without being matched with a test tube rack, and the use cost is reduced.

Methods and techniques are provided for using a conductive epoxy to create interconnects across a gap between an embedded integrated circuit chip and a dielectric substrate. The chosen epoxy is adhesive and thixotropic so that it sticks well and won't lose its volume after a drying process. Further, a liquid dielectric ink is used as an underfill material to not only cover and protect the interconnects but also act as a dielectric layer. This allows as for additional dielectric layers with corresponding interconnects and vias to form a multilayer structure with additional embedded chips. The disclosed methods and techniques can be implemented using direct print additive manufacturing processes.

The invention discloses a non-contact in-situ circuit pattern printing method and device, and the method comprises the steps: preparing functional ink which adopts a viscoelastic spinning solution; functional ink is filled into an inner needle head channel of the coaxial air spinning nozzle; guiding airflow with constant pressure is introduced into an outer needle head channel of the coaxial air spinning nozzle through a pressure controller, so that the functional ink extruded from an inner needle head is stretched and focused into continuous fiber jet flow; extruding airflow with constant pressure is introduced into the inner needle head channel through the pressure controller, the motion control device controls and drives the coaxial air spinning nozzle to move according to a preset digital path, and meanwhile, the constant distance between the tail end of the coaxial air spinning nozzle and the surface of the target substrate is kept, so that a fiber network structure is formed on the surface of the target substrate, and a circuit pattern is obtained. According to the invention, high-conformality and personalized circuit patterns can be directly printed on the three-dimensional non-planar human skin surface, and high-fidelity and high-resolution perception of human actions and physiological information without feeling wearing is realized.

The invention relates to the technical field of electromagnetic shielding, and particularly discloses a 3D printing electromagnetic shielding component preparation method based on electromagnetic signal detection. Segmenting the collected mixed point cloud of the electrical components, the gaps and the electron carriers through point cloud software, and screening and purifying point cloud features of only reserved gap areas; the electromagnetic shielding component model is transmitted to a fused deposition modeling 3D printer, and a composite wire is loaded through the fused deposition modeling 3D printer to directly print the shielding component on a conductive substrate or adhere the shielding component to the conductive substrate; and according to the electromagnetic radiation intensity and frequency of each electromagnetic element, the direct-writing 3D printer is controlled to print the conductive slurry at the specific position of the electromagnetic shielding component so as to form the composite structure with the electromagnetic shielding function. And the electromagnetic shielding quality is improved.

The present application discloses a spiral direct printing device, which includes a feeding and discharging mechanism, an inkjet mechanism, and a turntable mechanism. The feeding and discharging mechanism is used to drive the workpiece to feed and discharge; the inkjet mechanism is used to spray ink onto the workpiece; the turntable mechanism is located between the feeding and discharging mechanism and the inkjet mechanism, and includes a rotatable turntable body and a first loading assembly and a second loading assembly provided on the turntable body, the first loading assembly and the second loading assembly being used to load the workpiece. The feeding and discharging mechanism installs the workpiece to any one of the first loading assembly and the second loading assembly, and the turntable body rotates so that the loading assembly loaded with the workpiece faces the inkjet mechanism, and the inkjet mechanism performs the printing operation; at the same time, the other loading assembly rotates to a position facing the feeding and discharging mechanism, thereby completing the installation of the other workpiece; the two workpieces can be operated at the same time, so that the loading and printing operations of the workpieces are performed simultaneously, reducing the idle time of the inkjet mechanism and improving printing efficiency.

The invention provides ink for ink-jet printing, a flexible high-temperature-resistant electronic system and a preparation method of the flexible high-temperature-resistant electronic system. The material for preparing the ink is selected from at least one of ammonium molybdate, ammonium tungstate, ammonium niobate, niobium oxalate and tantalum ethoxide; a solvent for preparing the ink is a mixed solvent of at least three of water, propylene glycol, ethanol, ethylene glycol and isopropanol; the viscosity of the ink is less than 20 CPS, and the particle size of the solution is less than 1 [mu] m. According to the preparation method, an extreme temperature resistant circuit is directly printed on the surface of the flexible substrate through ink-jet printing and thermal annealing, precise manufacturing of a flexible electronic system with extreme temperature resistance, super-strong interface bonding energy and high light transmittance is achieved, and stress mismatch and microcrack formation of the electronic system in a high-temperature environment can be remarkably inhibited.

The invention relates to an electrical connection structure (10) comprising a flexible film (1) and at least one electrical guide rail (2), the at least one electrical guide rail (2) being mounted in a protruding manner on a surface of the flexible film (1), preferably being printed directly on the respective surface with an electrically conductive metal by means of a direct printing process, the flexible film (1) is not provided with a coating and / or a cover. The invention further relates to a method for producing an electrical connection structure (10).

The present invention provides a printing data processing device and a printing system that enable a user to directly print a table document through a handheld printer. It is characterized in that, after the content of the table document is displayed on the printing data processing device and the user selects the cells to be printed, the text content and text format of each cell are obtained from the table document through the cell content acquisition unit, and formatted text corresponding to each cell is generated through the formatted text generation unit. Further, the bitmap generation unit can generate a corresponding bitmap based on the formatted text and process it into a scrolling print content through the scrolling print content processing unit for the user to print. Therefore, through this printing system, as long as the user selects the cells to be printed in the table document, the handheld printer can print the table document, avoiding the need for the user to repeatedly set the format in the table document through other means and enabling direct printing to be achieved.

A kind of degradable metal mesh preparation method based on 3D printing mold, the prepared degradable metal mesh has membrane body, and the membrane body has honeycomb-shaped through-hole structure;The cross section of honeycomb-shaped through-hole structure is composed of multiple regular hexagons.The preparation method comprises the following steps: S1 three-dimensional model design, S2 mold forming, S3 mold pretreatment;S4 smelting, S5 centrifugal casting, S6 cooling and demolding, S7 post-processing obtains the final degradable guided bone regeneration degradable metal mesh.Using the process of "direct 3D printing ceramic casting mold + centrifugal casting", the preparation process is high in precision and good in efficiency.