70results about How to "Realize 3D printing" patented technology

The invention discloses a three-dimensional printer with a replaceable nozzle. The three-dimensional printer comprises a three-dimensional adjusting mechanism, and the printing nozzle which performs three-dimensional printing under the adjustment of the three-dimensional adjusting mechanism, wherein the printing nozzle comprises a nozzle bottom plate, a nozzle thermal preservation sleeve which is fixed on the nozzle bottom plate and is provided with a printing through hole and a positioning notch, a material tube which is radially clamped on the nozzle bottom plate, and a linear stepping motor; the material tube is axially clamped in the positioning notch through a material tube pressing plate which is in sliding fit with the nozzle bottom plate; a piston presser used for pushing a piston in a first material tube is fixed at the output end of a lead screw of the motor. When materials in the material tube are used up or the materials are needed to be replaced, the printing nozzle is controlled to automatically replace the material tube, and a three-dimensional object consisting of multiple materials can be printed. The piston is driven to be extruded by adopting the linear stepping motor, thrust is high and can be accurately controlled, and the blockage of the nozzle is avoided. According to the printer, liquid foods and multiple liquid materials such as gel and ceramic powder can be printed.

The invention discloses a three-dimensional printing method. According to the main process of the three-dimensional printing method, fused raw materials are placed in a forming area adopted by a three-dimensional printing device, the fused raw materials are accumulated and converted into a printed body in the forming area, and the fused raw materials are accumulated on the basis of the printed body until an object to be printed is formed. The three-dimensional printing method is characterized in that in the process of accumulating the fused raw materials, the portion, where the fused raw materials are to be accumulated, of the printed body is fused or softened through an electromagnetic induction heating manner, and/or the portion, where the fused raw materials are being accumulated, of the printed body is fused or softened. The three-dimensional printing method has the beneficial effects that the interlayer binding force of the printed body is high, and the structural strength of the printed body is high; a detachable auxiliary supporting body can be generated synchronously so that printing of a complicated structure can be achieved; an equipment structure is simple; a large-sized component can be printed; the three-dimensional printing method is suitable for multiple types of materials, and three-dimensional printing of electrically-conducive materials such as metal, metal ceramics and plastics mixed metal power can be achieved; cost is low; and the three-dimensional printing method has the substantial improvement.

The invention discloses a preparation method of 3D printable iron ion double-crosslinked alginate-polyacrylamide acrylic acid high-performance hydrogel. The method comprises the following steps: firstly, evenly mixing sodium alginate, acrylamide, acrylic acid and a photo-initiator; pre-molding by using a mould or a 3D printing way; illuminating by using an ultraviolet lamp so as to realize copolymerization between an AAc monomer and an AM monomer; after the polymerization is completed, soaking a hydrogel scaffold into an Fe3<+> solution to form ionic cross-linking; finally, soaking the productinto deionized water for balancing so as to remove the unreacted monomers. Two networks are both Fe3<+> cross-linked, so that a common cross-linking point exists between the two networks, and the hydrogel is enabled to have excellent performance. In addition, the sodium alginate has good natural high polymer with good biocompatibility, and the viscosity is adjusted by adding a small amount of adhesive in a sol state, so that the hydrogel has good anti-collapse and rapid gelation characteristics; the hydrogel can be prepared into high porosity hydrogel with various complex structures by usinga 3D printing technology.

The invention discloses a solid material and liquid material combined dual-nozzle 3D printer and a printing method thereof. The dual-nozzle 3D printer comprises a frame, an XY side moving module, a Zaxis moving module, a carrying plate, a solid material printing unit, a liquid material printing unit and a master control module, wherein the solid material printing unit comprises a solid printing head module and a wire feeding module; the upper end of a wire feeding throat pipe of the solid printing head module penetrates through a fixed plate of a cooling module to communicate with a wire feeding channel in the XY side moving module; and the lower end of the wire feeding throat pipe extends into a circular through hole of a metal heating block to communicate with a solid nozzle. An articlecombining the solid material with the liquid material can be printed, or a solid material article or a liquid material article is individually printed, and dual-component liquid materials are mixedlyprinted, a feeding module and a printing speed of the liquid material are flexibly controlled, and the combined dual-nozzle 3D printer and the printing method are suitable for performing 3D printingon multiple materials comprising a thermosensitive or thermoset liquid material.

The invention discloses nano-scale high-precision additive manufacturing equipment. The nano-scale high-precision additive manufacturing equipment comprises a printing platform and a printing nozzle,wherein a high-voltage pulse power supply is applied between the printing platform and a conductive nozzle of the printing nozzle; and a uniform-intensity magnetic field perpendicular to the printingplatform is further arranged between the printing platform and the printing spray head, and the distance between the printing platform and the printing nozzle meets the characteristic requirements. According to the nano-scale high-precision additive manufacturing equipment, nano-scale 2D and 3D additive manufacturing is achieved, high-voltage pulse electric fluid dynamic jetting, a nano-scale printing head and a constraint magnetic field are benefited, and the problem that high-precision nano-scale materials cannot be constructed in the prior art is solved, and particularly relates to the insufficiency and restrictions in the field of electronic circuit board printing, nano energy storage, solar cells and biomedicine, flexible electronic materials, high-flux preparation and the like.

The invention belongs to the technical field of biological materials, and discloses a hydrogel material for 3D bioprinting and a preparation method and application of the hydrogel material. The hydrogel material comprises the following components in percentages by mass: 0.5-10% of gellan gum and/or derivatives, 0.1-20% of PEG and/or derivatives thereof, 0-1% of a crosslinking initiator, 0-15% of biologically active components and the balance of a solvent. The hydrogel material is double-network hydrogel based on the gellan gum and PEG; interpenetrating double-network structures are formed in a physiological environment; and the hydrogel material has good structure and dimensional stability, and has the advantages of quick gum formation under physiological conditions, excellent cell compatibility, small immunological rejection, high cell encapsulation efficiency, controllable mechanical strength, biodegradability and the like. The hydrogel material is applied to 3D bioprinting; the shortcomings of low curing speed, harsh curing conditions, limited mechanical properties, poor cell compatibility and the like are overcome; and the hydrogel material has obvious advantages and good industrialized prospect.

The invention discloses a preparation method of an agar/polyacrylamide dihydrogen bond cooperative crosslinking high-tenacity hydrogel capable of 3D printing. The preparation method comprises the following steps: firstly dissolving agar into deionized water under heating and stirring conditions to obtain a uniform water solution, then adding a mixed solution of acrylamide and a light initiator dissolved into deionized water into a water solution of agar for uniform mixing, pre-forming the final mixed solution in a mold or 3D printing manner, firstly cross-linking agar at a low temperature, then putting the cross-linked agar under an ultraviolet lamp so that acrylamide is polymerized and hydrogen bonds are cross-linked, and the dihydrogen bond cooperative crosslinking high-tenacity hydrogelis formed; due to the fact that the hydrogel contains natural high molecular agar, and the viscosity is regulated and controlled by adding a small amount of fumed silica under the state of sol, the hydrogel has good sagging resistance and rapid gelatinization characteristics, and 3D printing can be realized.

The invention relates to a 3D printing device and method for molten metal, and belongs to the technical field of 3D printing. The 3D printing device comprises a casing, a first nozzle, a melting-electrode welding electrode and a non-melting-electrode welding electrode, wherein the first nozzle is connected with one end of the casing; a cavity is formed in the middle part of the casing; a first sealing plate and a second sealing plate are arranged in the casing; the melting-electrode welding electrode and the non-melting-electrode welding electrode are positioned in the cavity of the casing; the melting-electrode welding electrode and the non-melting-electrode welding electrode penetrate through the two sealing plates to be arranged; the first sealing plate is provided with a gas inlet, and the second sealing plate is provided with a gas outlet; the gas inlet and the gas outlet are used for allowing noble gases to circulate. According to the 3D printing device and method disclosed by the invention, a wire material extruding hot melting forming manner and a melting forming manner based on fusion welding are creatively combined, high temperature generated by welding arcs enables high-melting-point metal wires to be melted to obtain molten metal, and under the extruding action of the inside pressure of the casing and the nozzle, the molten metal stably and quickly flows out, so that the 3D printing is realized.

The invention discloses a 3D (three-dimensional) printer powder pre-production device which comprises a powder cylinder, a powder arm and a powder-spraying head. The powder cylinder is arranged on a shaping chamber, the powder arm is arranged in the shaping chamber, and the powder-spraying head which is of a disc structure is arranged on the powder arm. The powder-spraying head is connected with the powder cylinder through a round hose, and is provided with a valve with turning on and off controlled by a motor. A precise servo motor system is adopted to perform two-dimensional precise precast materials upon the powder-spraying head, the powder arm can be controlled to move leftward and rightward precisely, the powder-spraying head can simultaneously and precisely move back and forth on the powder arm, a computer identifies materials required by parts, and a control system controls the disc-structured powder-spraying head and a powder-feeding cylinder to provide powder to a shaping cylinder through the servo motor system according to contour information of slices, so that 3D printing manufacturing of the composite material parts can be realized. The 3D printer powder pre-production device is simple in structure, high in operability and capable of realizing 3D printing of composite materials, the parts of complicated internal structures can be manufactured, and production efficiency of a printer can be improved.

The invention discloses plasma fusion covering direct manufacture 3D printing equipment and a method. The equipment comprises a monitoring system, a plasma beam processing system, and a horizontal printing table. The plasma beam processing system includes a plurality of plasma beam processing devices; each plasma beam processing device comprises a plasma generator, a printing position adjustment controller, a gas supply device and a powder sending device. The monitoring system includes a plurality of beam processing supervising devices; each beam processing supervising device comprises a temperature detection unit, a horizontal movement controller, a distance detection unit and a printing distance adjustment controller. The temperature detection unit and the printing distance adjustment controller form a temperature control device. The method comprises the following steps: 1, acquisition of a 3D model of a workpiece to be printed, and hierarchical slicing processing; 2, scanning path filling; 3, printing path acquisition; and 4, printing layer by layer from top to bottom. The invention has the advantages of reasonable design, simple operation, high molding efficiency, good usage effect, and no need of enclosed moulding chamber, protection atmosphere, or vacuum environment.

The invention relates to a novel hot melting cement 3D printing head. The novel hot melting cement 3D printing head comprises a hot material conveying device, wherein the hot material conveying device comprises a tank body, a hot material motor, a worm rod and a heating resistor; the tank body is a cylindrical cavity; a shell interlayer made of a heat insulating material is arranged outside the tank body; a feed port is formed in the side surface of the upper end of the tank body; a conical nozzle is arranged at the lower end of the tank body; the hot material motor is fixed at the top end of the tank body, and is connected with a feeding worm rod through a coupling; one end of the worm rod is connected with the motor, a rotating shaft and the coupling, and is fixed at the upper end of the tank body by using a bearing; spiral blades are arranged on the worm rod; and the heating resistor is fixed in the interlayer of the tank body. The novel hot melting cement 3D printing head further comprises a cold material conveying device, wherein the cold material conveying device comprises a cold material bin and a piston pushing device; the cold material bin is provided with a rotary feeding valve; the rotary feeding valve is in engaged connection with a cold material motor gear; and the piston pushing device consists of a concave wheel and a pushing piston, is fixed at the lower part of the cold material bin, is engaged to the cold material motor gear, and realizes the piston type pushing of a cold material to a hot material feed port.

The invention belongs to the field of material machining, and discloses a multi-material gradient forming fusion extrusion system for 3D printing. The multi-material gradient forming fusion extrusionsystem for 3D printing comprises two parts of a particle differential transmission mechanism and a particle fusion extrusion mechanism. According to the multi-material gradient forming fusion extrusion system for 3D printing, the gradient forming of heterogeneous multi-materials is realized by controlling the feeding amount of different kinds of particles in the forming process; and by adopting the system, the wire material machining can be changed into particle processing, and the 3D printing of composite polymer materials can be supported by mixing two kinds of polymer particles together. The composition control of two kinds of polymer mixed particles is realized, and the composition proportion of printing materials is enabled to be controllable so as to realize 3D printing of the functionally gradient heterogeneous multi-materials; and the range of usable materials is expanded by flexible machining,the production cost is reduced, and the occurrence of the problems of wire breaking,blockage of a spray headand the like in wire machining is avoided.

The invention discloses a plasma cladding direct manufacturing rapid prototyping apparatus and method. The device consists of a monitoring system, a plasma beam machining system and multiple print platforms. Each print platform includes a horizontal print station, a print station position adjusting device and an electric walk mechanism. The plasma beam machining system consists of a plasma generator, a print distance adjusting device, a gas supply device and a powder feeder. The monitoring system includes a walk controller, a plurality of walk position detecting units, a temperature detecting unit, a distance detecting unit and a print distance adjusting controller. The method comprises the steps of first, acquisition of a three-dimensional model of a workpiece to be prototyped and layered slicing processing; second, scan path filling; third, print path acquisition; and fourth, printing layer by layer from the bottom to the top. The invention is reasonable in design, simple to operate, high in prototyping efficiency and good in using effect, and requires neither a closed prototyping room nor a protective atmosphere or vacuum environment, with the workpiece prototyping process performed directly under atmospheric conditions.

The invention discloses selective plasma 3D rapid molding equipment and a molding method. The equipment comprises a monitoring system, a plasma beam processing system, and a horizontal printing table for placing a workpiece to be molded. The plasma beam processing system includes a plasma generator, a gas supply device and a wire sending device for continuous sending of wire to be processed. The monitoring system includes a position adjustment controller, a temperature detection unit, a distance detection unit and a printing distance adjusting controller. The temperature detection unit and the printing distance adjusting controller form a temperature control device. The method comprises the following steps: 1, acquisition of a 3D model of a workpiece to be molded, and hierarchical slicing processing; 2, scanning path filling; 3, printing path acquisition; and 4, printing layer by layer from top to bottom. The invention has the advantages of reasonable design, simple operation, high molding efficiency, good usage effect, no need of enclosed moulding chamber, protection atmosphere or vacuum environment, and direct molding of workpiece in atmosphere environment.

The invention discloses plasma 3D (three-dimensional) fast forming equipment and method for rollers. The equipment is composed of a monitoring system, a plasma beam machining system and a horizontal printing platform for holding to-be-formed rollers; the plasma beam machining system comprises a plasma generator, a gas supply device, a wire conveying device used for continuously conveying out machined wires and a printing position adjustment device; the monitoring system comprises a position adjustment controller, a temperature detection unit, a distance detection unit, a printing distance adjustment controller and a rotation controller, and the temperature detection unit and the printing distance adjustment controller, form a temperature control device. The method includes the steps of 1, three dimensional model acquisition and hierarchical slicing, 2, scanning path filling, 3, printing path acquisition and 4, printing layer by layer from inside to outside. The equipment and method is reasonable in design, simple to operate, high in forming efficiency and good in using effect, and the formed rollers are high in quality as the forming process is conducted directly under the atmospheric environment.

The invention provides a 3D printing gradient porous graphene oxide three-dimensional microorganism electrode and a preparing method thereof. According to the 3D printing gradient porous graphene oxide three-dimensional microorganism electrode, Fe3+ or Ca2+ is crosslinked with graphene oxide molecules, or graphene oxide hydrogel made of Fe3O4 or FeS2 conductive nanoparticles is further added for serving as the material, and the 3D printing technology is adopted for preparing. On the basis of the 3D printing principle of low-temperature deposition, the graphene oxide hydrogel serves as the printing material, the three-dimensional electrode with the gradient pore structure, good biocompatibility, good conductivity and good interface electronic transmission properties is manufactured, the electrode is applied to a microorganism electrochemistry system, and the electrochemistry efficiency is improved.

The invention belongs to the technical field of spraying equipment, and discloses a cold spraying system and method. The cold spray system comprises a platform deck used for bearing workpieces, an adjustment mechanism rotationally connected to the platform deck, a spraying mechanism located on one side of the adjustment mechanism and a control mechanism, wherein the adjustment mechanism can adjustthe platform deck to move in the X direction, the Y direction and the Z direction and rotate in the X direction and the Y direction, and every two of the X direction, the Y direction and the Z direction are perpendicular to each other; the spraying mechanism can spray powder to the workpieces; and the control mechanism is electrically connected to the adjustment mechanism and the spraying mechanism. Through cooperation of the adjustment mechanism, the spraying mechanism and the control mechanism, the control mechanism controls the adjustment mechanism to do three-dimensional movement and two-dimensional rotation, and the spraying mechanism is adjusted in time to cooperate with the adjustment mechanism, so that the spraying mechanism can accurately spray the powder onto the workpieces, andthree-dimensional printing forming of the complex structure is achieved.

The invention relates to the technical field of 3D printing equipment, and discloses a 3D printing device for jet molding through combination of liquid metal and photosensitive resin. The device comprises a carrier tray, a spray head jet printing mechanism, a motion control mechanism, an ink supply mechanism and a UV illumination structure. A to-be-printed area is arranged on the upper surface ofthe carrier tray, the spray head jet printing mechanism is arranged above the carrier tray, the jet face of the spray head jet printing mechanism faces towards the to-be-printed area, the motion control mechanism is used for controlling the spray head jet printing mechanism to face towards the to-be-printed area and carry out 3D printing in the range of the to-be-printed area, the ink supply mechanism is used for supplying liquid metal and photosensitive resin for 3D printing to the spray head jet printing mechanism, and the UV illumination structure is used for carrying out curing molding onthe photosensitive resin jetted by the spray head jet printing mechanism. The 3D printing device has the advantages that layer-by-layer printing is carried out after liquid metal and photosensitive resin are combined, and therefore manufactured electronic circuit function devices have a conductive function when used as structural parts.

The invention discloses a colorful 3D printing robot device. The colorful 3D printing robot device comprises a fixing machine body, a working space with an upward opening is formed in the right side of the interior of the fixing machine body, a containing groove is formed in the upper side of the left end wall of the working space, a pushing device is arranged at the upper end of the containing groove in a sliding mode, the left side of the upper end surface of the fixing machine body is connected with a height rod in a sliding mode through a translation device, a lifting block is arranged onthe outer side of a rod body of the height rod in a sleeving mode, a telescopic rod is fixedly arranged on the right end surface of the lifting block, the right end of a connecting rod penetrates through the right end wall of a compression space and is fixedly connected with a working probe, the lower end surface of the working probe is fixedly connected with a laser probe, and a pinhole nozzle isarranged at the opening in the upper end of a loading space in a threaded sealing mode. According to the colorful 3D printing robot device, in the working process, laser welding type 3D printing of ametal material can be completed, material spraying type 3D printing also can be completed, the versatility function is achieved, the cost of 3D printing is effectively saved, and the use is convenient.

The invention relates to the technical field of ceramic material preparation, in particular to a polymer precursor porous magnetic ceramic system based on a 3D printing technology, which comprises a slurry preparation unit, a 3D printer and a calcining boiler, the slurry preparation unit comprises a pretreatment tank and an ultrasonic stirring kettle; the pretreatment tank is used for preparing amodified pore-forming agent, the ultrasonic stirring kettle is used for adding the modified pore-forming agent, magnetic nanoparticles, an inert filler and a polymer precursor into an organic solventfor stirring and mixing, and the organic solvent is volatilized through ultrasonic treatment to obtain printing slurry; the 3D printer uses the printing slurry for printing to obtain a green body ; and the green body is calcined by a calcining boiler to obtain a porous magnetic ceramic. The preparation method is used for preparing the porous magnetic ceramic and comprises the following steps: A, preparing the slurry; b, preparing the green body; and c, performing atmospheric sintering. The preparation process is simple, the production cost is low, and the economic value of the prepared productis high.

The invention discloses a plasma melt casting quick forming device and a forming method. The device is composed of a monitoring system, a plasma beam processing system, and a printing platform. The plasma beam processing system is composed of a plasma generator, a printing distance adjustment apparatus, a gas supply apparatus, and a wire feeding apparatus which continuously feeds a to-be-processed wire material. The monitoring system comprises a position regulating controller, a temperature detection unit, a distance detection unit and a printing distance adjustment controller. A temperature regulating apparatus is composed of the temperature detection unit and the printing distance adjustment controller. The forming method includes the steps of: 1) obtaining a three-dimensional stereo model of a to-be-formed work piece and performing layered slicing treatment; 2) performing scanning path filling; 3) obtaining a printing path; and 4) printing the product from bottom to top layer by layer. The device has reasonable design, simple operation, high forming efficiency and good use effects and is free of a sealed forming chamber and also is free of a protective atmosphere or a vacuum environment, wherein the work piece forming process is directly carried out under atmospheric environment.