Technological plates, manufactured on the basis of fused deposition modeling, for forming and replicating of objects

FIELD: printing industry.

SUBSTANCE: manufacturing method of 3D-article (10), comprising the outer layer (210) and the supporting structure (220) with cavities (230). The outer layer (210) at least partially covers the supporting structure (220). At that the method includes: (a) 3D-print stage, including 3D-printing by fused deposition modeling (FDM) with the material (201) for 3D-printing of the outer layer (210) and the supporting structure (220), and at least partially filling of the cavities (230) with the filler (204). And also (b) the post-processing stage, including the post-processing of at least the part of the outer layer (210) to reduce the surface roughness.

EFFECT: increased quality of products.

13 cl, 7 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: electroconductive polymer composition for 3D-printing is described, consisting of a polymer base, a carbon filler, which additionally contains an antioxidant, syndiotactic 1,2-polybutadiene is used as a polymer base in the following ratio, wt %: 1.2 of SPD - 77,5-94,5; carbon black - 3-20; antioxidant - 2.5.

EFFECT: prepairing of polymer compositions with improved conductivity and processability intended for 3D-printing.

3 cl, 1 tbl, 11 ex

FIELD: printing industry.

SUBSTANCE: equipment set includes a system of moulding modules coupled with the conveyor system, a three-dimensional moulding system, a liquid removal system and a recovery system. The moulding system includes a conveyor, multiple moulding units and at least one forming station equipped with a system of powder layer application and a printing system. The set of equipment can be used for manufcaturing pharmaceutical, medical and non-pharmaceutical / non-medical products. It can be used for preparing single pieces or series of products.

EFFECT: enables continuous or batch production by means of three-dimensional printing with minimum product loss, high efficiency and high product repeatability due to flexibility of the product.

74 cl, 44 dwg

FIELD: technological processes.

SUBSTANCE: device for automated finishing of products made with 3D printing, including a working chamber with a smoothing sample placed in it, connected to the reactor with the possibility of feeding and circulating solvent vapor, a storage tank for liquid solvent, and a heater and a refrigerator with the possibility of evaporation and condensation of the solvent, and a control unit. Herewith the heater and the solvent cooler are structurally combined in one unit, which is made in the form of a thermoelectric converter based on the Peltier effect. The working chamber can be provided with a steam supply channel at the top of the working chamber and a circulation channel at the bottom of the working chamber. In the latter, a fan, temperature and steam concentration sensors are installed. The side walls of the reactor can be provided with a heat-insulating coating, and the thermoelectric converter plate-the Peltier element-and the temperature sensor are connected to the bottom of the reactor with one side. And the second side of the Peltier element is connected to the radiator equipped with a fan. In the lower part of the reactor, a supply and evacuation tube is introduced, connected through a reversible metering pump to a container for storing the liquid solvent. The control unit may comprise a microcontroller connected to temperature, concentration, fans and a stepper motor of a reversible metering pump.

EFFECT: increasing the degree of automation of the smoothing process and reducing the power consumption.

4 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: method includes the steps of forming a layer of the powdered material, applying a liquid reagent to the layer of the powdered material with the configuration of the corresponding section of the digital model, repeating these operations to form successive layers. To obtain a three-dimensional product, curing is carried out using a microwave electromagnetic field with a frequency of 950-2450 MHz ± 2.5%, a specific power of 25-35 W/cm3, with the exposure time equal to 0.8-1.0 minutes.

EFFECT: providing optimal modes of influence of the microwave electromagnetic field on the product at the stage of its curing to increase the homogeneity of the three-dimensional product structure and to increase its flexural strength.

1 dwg,1 tbl, 1 ex

FIELD: technological processes.

SUBSTANCE: system has a layering device 3 with a support structure 21a-21c and a container 17 attached to the support structure and defining an internal cavity for receiving particulate structural material leading to particulate structural material discharge opening. It also has a vibrating device 23 configured to communicate vibration to the particulate structural material received in the container, thereby providing discharge of structural material from the opening, and a smoothing element 15a attached to the layering device and configured to smooth the particulate structural material discharged from the opening. In this case, the discharged material is flattened and/or compacted in the form of particles. A shutter device 31 is made to close the opening selectively and comprises a shutter element 31a. The latter is attached to the layering device 3. The smoothing element 15a and/or the shutter member 31a are attached to the support structure so that there is no vibration communication with the vibration generated by the vibrating device in the container 17.

EFFECT: extends the scope of the container layering device.

14 cl, 15 dwg

FIELD: technological processes.

SUBSTANCE: polymeric three-dimensional object of complex shape is made up of layers of height h successively formed from a liquid photopolymer cured point-wise under the influence of light radiation and attached to each other during the formation process. Herewith the size of the curing "point" preferably coincides with the size of the light beam spot initiating the curing of the photopolymerizable composition. In addition, the three-dimensional object has in the entire volume a system of randomly located open bonded pores, each with a maximum transverse linear dimensionρ less than the height of the layer h and the diameter of the "point" d. The method of manufacturing a polymeric three-dimensional object of complex shape with a system of open bonded pores made up of layers obtained by successive curing each layer of a photopolymerizable composition by successive moving a light beam along it initiating its photocuring. As a photopolymerizable composition, a mixture of a photopolymer with a non-polymerizable component (an organic solvent, for example, methanol or 1-butanol or dinonyl phthalic acid or a mixture thereof) is used, with the possibility of heterophasic stratification of the composition during its photocuring and self-formation of the porous polymer structure with the pore size ρ= (Dτ)0.5, where D is the diffusion coefficient of the composition,τ curing time of the "point". Herewith the speed V of moving the light beam is given by the condition: d/τ> V>ρ/τ. After completion of the irradiation, the non-polymerization component is removed from the volume of randomly located openly bonded pores of the formed object of complex shape, preferably washed in an organic solvent, followed by its removal by evaporation.

EFFECT: accelerating the process of manufacturing a three-dimensional polymer object and improving its quality.

4 cl, 2 dwg

FIELD: machine engineering.

SUBSTANCE: method includes layer-by-layer fusing of product with polymeric material. When fusing the product, rectilinear or smoothly curving inner channels filled with a reinforcing polymer material with a hardener are formed. A pre-heated polyurethane resin is used as such reinforcing material into which a wollastonin powder is added in amount of 20 wt % of the resin.

EFFECT: use of the invention makes it possible to manufacture large-size and geometrically complex products and increase their strength and stiffness characteristics.

1 cl

FIELD: physics.

SUBSTANCE: invention relates to a 3D-printer, a 3D-printer system, and a generative manufacturing method. The 3D-printer (100) is adapted to form layer-by-layer a three-dimensional component through the formation of the construction material layers in the form of particles, lying one upon another, and by selective curing the partial area of the corresponding layer of the structural material. In addition, the 3D-printer (100) carries out the formation of one or more of the first three-dimensional components in the first structural space (B1) located in the 3D-printer, and at the same time one or more second three-dimensional components in the second structural space (B2) located next to the first structural space at a distance from it horizontally in the 3D-printer.

EFFECT: improving the quality of manufactured objects.

16 cl, 18 dwg

FIELD: physics.

SUBSTANCE: invention refers to the layer applying system for the three-dimensional printer, a 3D printer and a method for applying two layers of the structural material in the form of particles. The layer applying system (1) for the 3D printer comprises a layer applying device (3) with a container (17) defining an internal cavity for receiving a particulate structural material leading to a dispensing aperture of the structural material in the form of particles. A smoothing element (15a) forms a downward-smoothing surface and is configured to smooth the structural material issued from the openings using the smoothing surface thereby levelling and/or compacting the material issued in the form of particles. The layer applying system (1) further comprises an adjusting device (13) configured to adjust the inclination angle of the smoothing surface (15a) in an adjustable manner.

EFFECT: improving the quality of manufactured products.

23 cl, 23 dwg

FIELD: technological processes.

SUBSTANCE: method includes manufacture of a matrix, casting of a product by means of the matrix and heat treatment of the produced product. A 3D model is produced from the thermoplastic mass by additive moulding, immersed in a silicone mass to make a silicone shell, which is the product matrix. A heated ceramic slip is cast into the silicone matrix. The heat treatment of the product includes: preliminary sintering for 6 hours at a temperature of 300oC with holding for 1 hour, then the heating is continued up to 1100oC for 11 hours with holding for an hour, cooling and machining, after which the final sintering is carried out at 1450-1700oC with holding for 1 hour in air for VK-95 and in vacuum for VK-94 to produce a ceramic product.

EFFECT: producing ceramic products of a complex volume form with high technical and functional characteristics.

4 cl, 2 dwg, 3 ex

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