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229results about How to "Efficient printing" patented technology

High-precision electric field driven spray deposition 3D printer and working method thereof

The invention discloses a high-precision electric field driven spray deposition 3D printer and a working method thereof, and solves the problems of a traditional 3D printer on multiple aspects of resolution, stability and controllability; high-precision printing of multilayer structures can be realized; the printing process is observed and monitored in real time; and high-precision pattern printing is performed on insulation substrates through electric conducting materials. The high-precision electric field driven spray deposition 3D printer comprises a mounting baseplate; a Y-axle worktable is arranged on the mounting baseplate; a vacuum absorption platform is fixed on the Y-axle worktable; a printing substrate is absorbed on the vacuum absorption platform; a printing nozzle and a vertical observation camera are correspondingly arranged above the printing substrate, and are connected to a Z-axle worktable; the Z-axle worktable is fixed on an X-axle worktable; a squint observation camera is correspondingly arranged on one side of the printing nozzle; an LED light source and a far infrared curing light source are correspondingly arranged on the other side of the printing nozzle; theprinting nozzle communicates with a storage bottle; and the storage bottle is arranged on a lifting table.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Printing head for 3D printing, control system, 3D printer and printing method

The invention discloses a printing head for 3D printing. The printing head comprises a machine shell, a screw extruding system, an installation seat, barrels, valve needles and spray nozzles. A drive system is arranged at one end of the machine shell. The screw extruding system is arranged in the machine shell and is composed of at least two screws which are embedded internally and externally, and at least one screw is driven by the drive system. The installation seat is mounted below the screw extruding system. One or more inner holes are distributed in the installation seat in the axial direction, and a discharge outlet is formed in the top or the side face of each inner hole. The barrels are mounted in all the inner holes of the installation seat correspondingly, the barrels extend out from one end of the installation seat, and barrel feeding openings are formed in the top ends of the barrels. Valve cavities are formed in the barrels. The valve needles penetrate through all the valve cavities of the barrels to be mounted on the installation seat, and the gaps between the valve needles and the valve cavities form discharging channels communicating with the feeding openings of the barrels. The spray nozzles are arranged at the tail ends of all the barrels. The printing head for 3D printing is light in weight, small in size, capable of achieving high printing precision and printing speed, novel in design, high in practicability and high in economic value.
Owner:浙江光镀智造科技有限公司

Ultraviolet-cured silicone rubber for DIW (direct ink writing) 3D (three-dimensional) printing and preparation method thereof

The invention relates to ultraviolet-cured silicone rubber for DIW (direct ink writing) 3D (three-dimensional) printing and a preparation method thereof. The ultraviolet-cured silicone rubber is prepared from the following raw materials in percentage by weight: 50-80% of polysiloxane containing unsaturated groups, 1-10% of a sulfydryl-containing cross-linking agent, 0.1-10% of a photoinitiator, 1-10% of rheological modifier, 6-40% of a filler and 5-20% of reinforcing resin. According to the ultraviolet-cured silicone rubber and the preparation method thereof, the polysiloxane containing the unsaturated groups, the sulfydryl-containing cross-linking agent and the rheological modifier are subjected to quick reaction and curing under ultraviolet irradiation, proper rheological property enables DIW (direct ink writing) 3D (three-dimensional) printing to be carried out more efficiently, a printed product has the characteristics of high elasticity and high strength, especially shows outstanding advantages in the aspect of the strength, meanwhile, has appropriate hardness, and has no unpleasant smell after being cured, the toxicity is low, the pollution is small, and the size precision controllability of a printing material is realized.
Owner:SHANDONG UNIV

Forming window for high-speed continuous photocuring 3D printing

The invention discloses a forming window for high-speed continuous photocuring 3D printing. The forming window applied to a photocuring 3D printer comprises a window box and an oxygen supply cooling module. The photocuring 3D printer is divided into an upper cavity and a lower cavity through a middle partition. The window box and the oxygen supply cooling module are arranged in the upper cavity of the case of the photocuring 3D printer. The window box and the oxygen supply cooling module are fixedly mounted on the middle partition in a combined manner. Two ends of an oxygen supply cooling chamber are respectively connected with a cooling gas inlet pipeline and a cooling gas outlet pipeline, and the oxygen supply cooling chamber, the o cooling gas inlet pipeline and the cooling gas outlet pipeline form the oxygen supply cooling module. The forming window has the advantages that low-cost and efficient continuous printing of large-size optional-shape parts can be achieved, the forming window is wide in applicable materials, the precision and quality of the printed parts are high, the printed parts are good in consistency, and process stability and reliability are achieved. In addition, the forming window is high in industrial application value and applicable to a desktop-level 3D printer and industrial 3D printing.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Method for producing environment-friendly false proof cover paper

The invention relates to a method for producing environment-friendly anti-counterfeiting cover paper. In the method, raw fibers with the purity of 100 percent are used to produce base paper; the raw fibers selected comprise the following components in weight portion: 50 to 65 percent of needle oil pulp,10 to 20 percent of silking pulp, and 20 to 30 percent of cotton pulp; the raw fibers are subjected to disintegration by a pulp plate, pulping treatment, blending, pulp conveying, forming by a head box, drying and dehydration and bundling reeling to produce the base paper, and the base paper is orderly subjected to dip dyeing, dip latex, base coating, anti-counterfeiting printing and top coating to produce the anti-counterfeiting cover paper. The cover paper has excellent tearing resistance and folding resistance and good anti-counterfeiting function. The method of the invention has the advantages of simple processing and manufacturing, low production cost and environmental protection, and has the tearing resistance and anti-counterfeiting function. The environment-friendly anti-counterfeiting cover paper is suitable for being manufactured into covers of all certificates, particularly a cover of an environment-friendly anti-counterfeiting passport.
Owner:SHANDONG KAILI SPECIAL PAPER

3DP printing method combining hierarchical shifting printing and layered mappable unit partition method

The invention relates to a 3DP printing method combining hierarchical shifting printing and layered sheet partition method in the technical field of 3D printing. In the 3DP printing method provided bythe invention, in each layer of printing, a printing head adopts a way of shifting printing layer by layer, so as to enable the same orifices are staggered in the corresponding position in every adjacent layers, thereby avoiding defects of printing module section breaking caused by blockage of multiple orifices or belated repairing; when performing printing in each layer, cutting the whole sheetinto multiple respectively printed sheet according to the width of the printing, and re-planning the treading trace of the printing head, realizing fast blocking on each layer of printing sheet blankarea, so as to improve the printing efficiency. Therefore, according to the invention, printing by using the printing head for hierarchical shifting printing and cutting each layer of printing sheet and re-planning the treading trace, high efficient and fast printing can be realized, the defect of printing section breaking caused by blockage of multiple orifices is avoided, the maintenance cost ofthe printing head is reduced, the service life of the printing head is prolonged.
Owner:NINGXIA KOCEL MOLD
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