5567 results about "3d printer" patented technology

The invention provides an enhanced 3D printer. The enhanced 3D printer comprises a workbench, and a transmission mechanism with a printing platform is installed on the workbench; an internal thread piece with an internal thread hole is detachably mounted on the printing platform, and the reinforcing screw rod is screwed in the internal thread hole of the internal thread piece; the printing platform is provided with a driving device used for driving the reinforcing screw to rotate. The model is bonded on the printing platform, and a reinforced hole is formed in the model; under the driving of the driving device, the reinforcing screw rod can do reciprocating motion in the vertical direction, and the reinforcing screw rod is screwed into the reinforcement hole or withdrawn from the model; the scraper in the trough can move from one side to the other side to push solid particles deposited at the bottom of the trough from the working area to the non-working area. The invention further provides an enhanced 3D printing method. According to the method, the situation that cracks and even fractures occur to the model due to the gravity influence and the binding force effect of the release film in the printing process can be effectively reduced or even avoided.

A digital auxiliary repair method for an ancient building. The method comprises: point cloud data acquisition, point cloud model establishment, point cloud model optimization and model printing, which involve: scanning and photographing a damaged ancient building by using a three-dimensional scanner and an industrial camera, so as to obtain three-dimensional point cloud data of the ancient building; performing preprocessing, such as data registration, data denoising, data simplification and data segmentation, on the point cloud data to obtain data for establishing a three-dimensional model; optimizing the three-dimensional model; and by means of a 3D printer, obtaining a mold for a damage position of the ancient building, and on the basis of requirements, using the mold to perform molding to obtain a wooden or brick-mixed workpiece.

Provided in the present invention are an interaction and generation method for obtaining a three-dimensional model by means of photographing, a method for obtaining a picture by means of a three-dimensional model, and a part machining and manufacturing method. The interaction and generation method comprises: a user using a terminal to capture scene information, wherein the scene information can be an outdoor or indoor scene, the terminal can be a smart phone, an AR / VR device or other smart terminals having a photographic function, and the captured scene information is RGB and / or RGBD (including depth) information; and sending an RGB image and / or RGBD image I to a monocular three-dimensional reconstruction algorithm, so as to obtain a corresponding three-dimensional model, which can be displayed on an interaction interface and superimposed with a real scene, or can be displayed on a single page.

A method of continuous 3D printing to print an article is provided. The method includes displacing a nozzle of the 3D printer in a nozzle displacement direction; extruding the ink from the nozzle concurrently with the displacement of the nozzle to form an extrudate on the porous substrate; and displacing the rotating magnetic field in the nozzle displacement direction simultaneously with the displacement of the nozzle. The ink includes a plurality of magnetically responsive particles and a colloidal gel. The colloidal gel may include fumed silica in an aqueous solution.

The sand mold 3D printer relates to the technical field of casting molding, and comprises a box body, a workbench is arranged in the box body, a moving avoiding mechanism is arranged at the top of the box body, and cleaning and material collecting mechanisms used for cleaning a printing head are arranged on the front side and the rear side of the workbench correspondingly. The sanding device and the printing head respectively adopt two mutually independent and vertical driving parts as power, after the sanding device performs unidirectional sanding, the printing head performs continuous printing from front to back, after printing, the printing head moves to the position of the rear cleaning and receiving mechanism for avoiding, and then the sanding device performs reverse sanding, so that the printing efficiency is improved. The printing head conducts reverse continuous printing from back to front, two-way sanding and two-way printing are achieved, the sanding device and the printing head are free of idle stroke, the printing efficiency is high, when the printing head conducts avoiding, the pressure driving assembly drives the automatic cleaning assembly to scrape and clean glue liquid and gravel remaining at the bottom of the printing head, and therefore the printing efficiency is improved. And the bottom of the scraping plate is cleaned through the cleaning mechanism.

The invention discloses a concrete 3D printing path optimization method and system based on reinforcement learning, and the method comprises the following steps: representing a to-be-printed geometric model as a graphic structure composed of nodes and edges, each node being a specific position in a three-dimensional space on a printing surface, and the edge representing a feasible moving path of a printing head between the nodes; performing dynamic optimization on the movement of the spray head through a Q-learning algorithm, performing iterative calculation on a Q value, and completing dynamic adjustment on a printing path on the basis of an instant reward to obtain an optimal printing path with the minimum movement distance, the minimum sharp turn frequency and the minimum start-stop frequency; the optimal printing path data is converted into a standard G code, and the 3D printer is controlled to execute the optimal printing path based on the standard G code; by combining the solving process of the optimal Q value in the Q-learning algorithm and the construction requirements of concrete 3D printing path planning, the accurate optimal printing path planning can be efficiently completed through the self-learning-self-evolution algorithm advantages of the reinforcement learning model.

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration and maneuverability. The disclosure delineates calibration of one or more components of the 3D printer, e.g., the energy beam. The disclosure provides optical devices that are robust, e.g., in terms of their maneuvering.

The invention discloses an industrial particle 3D printer cavity temperature heat recovery system and a cavity temperature control method, and relates to the technical field of 3D printing, and the method comprises the following steps: establishing a three-dimensional geometric analysis model of a printing component, based on the structural morphology, thickness distribution and spatial topology characteristics of the component, extracting a spatial temperature control demand corresponding to each region, and calculating a three-dimensional geometric analysis model of the printing component; and determining an adjusting target of the hot air circulation system. According to the method, a space temperature control demand model is established based on geometrical characteristics of a component, oriented distribution of heat energy is realized by dynamically adjusting a hot air circulation system, a cooling characteristic curve is constructed in combination with real-time temperature and stress data, and a warping resonance sensitive area is identified and regulated. And a self-adaptive temperature control system is formed through fixed-point thermal compensation and parameter closed-loop correction. Compared with a traditional strategy, the method has the advantages that the temperature control precision and the response efficiency are remarkably improved, thermal stress resonance and structural deformation in the cooling process are effectively restrained, and the method is suitable for stable forming of high-precision complex components and has wide application prospects.

The invention belongs to the technical field of fiber reinforced composite material additive manufacturing, and discloses a continuous fiber composite material 3D printer tail end heating extrusion device. Aiming at the problems of poor fiber impregnation degree of a resin matrix, low process flexibility of a mode of directly printing pre-impregnated composite filaments and incapability of changing the fiber content in a composite material structure by adjusting process parameters in real time in an in-situ impregnation printing mode, the invention designs an in-situ impregnation printing method capable of ensuring the printing process flexibility and improving the printing efficiency. According to the tail end heating extrusion device, the continuous fiber reinforced composite material structure can be formed in a high-quality mode, the fiber impregnation degree can be remarkably improved, and the structure of a printing nozzle is optimally designed. Through the structural design of the internal channel and the outlet nozzle of the tail end heating device, the impregnation effect of a resin matrix on continuous fibers can be improved, scraping of the nozzle on the continuous fibers is relieved, and the quality of a printing component can be effectively improved.

The present invention relates to the technical field of porous conductive ceramics. Disclosed are a selective laser sintering porous conductive ceramic 3D printing consumable and a preparation method. The selective laser sintering porous conductive ceramic 3D printing consumable comprises the following components in percentage by weight: 30-60 wt% of modified silicon carbide powder, 10-40 wt% of conductive phase powder, 10-30 wt% of a polymer binder, and 0.1-5 wt% of a lipid. The selective laser sintering porous conductive ceramic 3D printing consumable is obtained by means of a direct mixing ball milling method or a xylene solution mixed washing method. A porous conductive ceramic green body is printed by means of a laser 3D printer, and is subjected to thermal debinding and sintering to obtain a ceramic sintered part.

The utility model relates to a wire feeding device for 3D printing, and solves the technical problem of how to enable a fiber printing mode of a spray head to be more stable and reliable in existing 3D printing equipment. The device comprises a vertical supporting plate, a driving roller driving motor, a roller shaft, a first synchronous belt wheel, a second synchronous belt wheel, a first synchronous belt, a driving roller, a driven roller, a jackscrew connecting block, a driven roller connecting block, a jackscrew, an extension spring and a feeding disc, the jackscrew connecting block is connected to the vertical supporting plate, and a sliding groove is formed in the jackscrew connecting block; the driven roller connecting block is located in a sliding groove of the jackscrew connecting block, the jackscrew is connected with an inner threaded hole of the jackscrew connecting block, the front end of the jackscrew abuts against the side face of the driven roller connecting block, the driven roller is rotationally connected with the driven roller connecting block, and one end of the extension spring is connected with the driven roller connecting block. The other end of the extension spring is connected with the jackscrew connecting block, and the driven roller is close to the driving roller. The 3D printer is widely applied to 3D printing equipment.

The present application provides a 3D printing method, device, 3D printer and computer equipment, wherein the method includes: obtaining a collection of slice images corresponding to a three-dimensional model to be printed; determining the cross-sectional information of the cross-section in each layer of slice images in the collection of slice images, and based on the cross-sectional information, calculating the printing difficulty value corresponding to each layer of slice images in the collection of slice images; based on the printing difficulty value, respectively determining the printing parameters corresponding to each layer of slice images, and determining the printing operation based on the printing parameters, so as to print the three-dimensional model based on the printing operation. In an embodiment of the present application, during the printing process, the printing parameters can be adaptively adjusted as the printing difficulty value of the slice images changes, thereby improving the printing success rate and printing quality, and at the same time improving the printing efficiency.

According to the pull-up type photocuring 3D printer, an outer ring of a slewing bearing is fixed to a workbench, a lifting pipe is engaged with the inner side of an inner ring in a threaded mode, and the lifting pipe can only move in a reciprocating mode in the vertical direction; the sleeve is fixed on the outer ring, the trough is meshed on the outer ring in a threaded manner, and the guide rod on the inner ring is arranged in a guide hole of the trough in a sliding and penetrating manner; when the inner ring rotates, the material groove reciprocates between the first working position and the second working position, and the lifting pipe reciprocates between the third working position and the fourth working position. When the material groove is located at the first working position and the lifting pipe is located at the third working position, printing work can be conducted; and when the material groove is located at the third working position and the lifting pipe is located at the fourth working position, the release film and the product model on the printing platform are in a separated state. The invention further discloses a photocuring 3D printing method. The vertical moving distance and speed of the printing platform are reduced through descending of the material groove, abrasion of the ball screw and the screw nut is reduced, and the service life of equipment is prolonged.

A stabilization apparatus for reducing vibration of a 3D printer during operation thereof. A stabilization apparatus features a stationary framework having a base seated atop a support surface and spanning a greater two-dimensional footprint than the 3D printer. One or more flexible elongated suspenders each has one end connected to a respective anchor point each defined on the supportive framework at a respective location of elevated relation to an underside of the base. Another end of each suspender is secured either to the 3D printer itself, or to a floating support atop which the 3D printer is placed. The 3D printer is thereby supported in a floating position of suspended relation to the stationary framework of the stabilization apparatus.

The application discloses a kind of based on 3D printing's three-dimensional model slice path processing method and device. Including: control 3D printer to starting point as starting point;Based on the region surrounded between starting point and reference point, determine the printing point to be printed that 3D printer needs to execute printing action during executing 3D printing job;Starting point and the printing point to be printed are sequentially connected by smooth straight line, generate printing path;Based on printing path control 3D printer executes 3D printing job and obtains target object, to effectively reduce the number of line segments of slice contour line of three-dimensional model forming target object, avoid 3D printer in printing job, in the pause frequency of line segment head, tail, simultaneously avoid the problem that 3D printing model surface protrusion is caused by long time scanning due to pause.In reducing pause frequency, printing is more smooth, improve printing efficiency, simultaneously also reduce algorithm complexity, help the simplification of algorithm.And effectively simplify the algorithm of 3D printer.

The technology described herein is directed towards a metasurface arranged with unit cells for broadband and / or multiband sound absorption, in which the unit cells are based on the principles of Helmholtz resonators. Deeply subwavelength sound absorbing unit cells are designed and constructed based on desired resonance frequencies. Each unit cell includes a neck portion and air chamber dimensioned to resonate at a desired resonance frequency and thereby inverse phase cancel corresponding frequencies of incoming sound waves. Differently designed and arranged subgroups of unit cells are part of the metasurface, which can be positioned proximate to a noise source. As practical examples, the metasurface or multiple metasurfaces can be placed near or wrapped around a computer server or rack of servers to absorb fan noise. The metasurface components (including the unit cells) can be printed by a 3D printer to result in a thin, light-weight, and cost effective noise absorbing metasurface.

A top-down 3D printer includes a workbench, a light device, a second drive mechanism, a scraper, a printing platform, a resin vat and a liquid level adjustment mechanism. An output end of the first drive mechanism is connected to the printing platform, the first drive mechanism is configured to drive the printing platform to move up and down, an output shaft of the second drive mechanism is connected to the scraper, the second drive mechanism is configured to drive the scraper to move up and down in the height direction of the workbench and drive the scraper to rotate around the output shaft of the second drive mechanism the laser displacement sensor is configured to monitor a liquid level of resin in the resin vat, and the liquid level adjustment mechanism is configured to feed resin to or extract resin from the resin vat.

The invention discloses a 3D printer reloading mechanism, a 3D printer and a working method. The 3D printer reloading mechanism comprises a first driving device, a feeding mechanism, a feeding driven assembly, a sorting mechanism, a first transmission assembly, a feeding linkage mechanism, a second driving device and a consumable winding roller mechanism which are connected according to a set connection relation. The number of the feeding driven assemblies is multiple, consumables can be arranged between the feeding mechanism and each feeding driven assembly, and therefore multiple types of consumables can be selected for printing. By means of the material changing mechanism of the 3D printer, needed consumables can be selected and conveyed to the spray head to be printed. According to the material changing mechanism of the 3D printer, consumables can be flexibly changed and selected for printing, and the diversified printing requirements of people can be met. The method can be used for a single-nozzle 3D printer to print multi-color consumables or used for the single-nozzle 3D printer to print multiple consumables made of different materials.

The disclosure provides an object shoveling mechanism, a 3D printer and a 3D printing method, and relates to the technical field of printing. The object shoveling mechanism is applied to the 3D printer. The 3D printer includes a forming platform, provided with a forming surface. The object shoveling mechanism includes an object shoveling assembly and an object receiving assembly, wherein the object shoveling assembly includes a shoveling tool and an object shoveling driving assembly, the shoveling tool being configured to strip a printed object from the forming surface, and the object shoveling driving assembly being configured to drive at least one of the shoveling tool and the forming platform, so that the shoveling tool and the forming platform move relatively to strip the printed object from the forming surface through the shoveling tool; and the object receiving assembly includes a carrying element and an object receiving driving assembly, wherein the carrying element is provided with an object receiving position and configured to receive the printed object remove from the forming surface at the object receiving position, and the object receiving driving assembly is configured to drive the carrying element to move to the object receiving position. According to the object shoveling mechanism, the printer may operate unattended, the labor cost is reduced, and the printing efficiency is improved.

The invention discloses a flow field device for purifying a printing cavity and a 3D printer, the flow field device comprises a forming cavity, an air inlet piece and an air outlet piece, the air inlet piece and the air outlet piece are arranged in the forming cavity in a communicating mode, the air inlet piece and the air outlet piece are arranged away from each other, and the air inlet piece comprises an air inlet pipe and a lower air equalizing pipe connected to the air inlet pipe; the lower gas homogenizing pipe is arranged in the forming cavity in a communicating mode, the communicating position is located on the lower portion of the forming cavity, the outline of the edge of the end, away from the air inlet pipe, of the lower gas homogenizing pipe is rectangular, the long edge of the lower gas homogenizing pipe is parallel to the bottom wall of the forming cavity, a plurality of gas homogenizing plates are arranged in the lower gas homogenizing pipe, and a plurality of gas homogenizing holes are formed in the gas homogenizing plates. The gas flow field can be formed near the laser scanning area, so that black smoke generated during laser scanning can be comprehensively and effectively taken away, and the influence of the black smoke on the printing quality in the printing process can be reduced.

The invention discloses a 3D printer with an auxiliary stripping function and a using method, and particularly relates to the technical field of 3D printing.The 3D printer with the auxiliary stripping function comprises a gantry rack, a two-axis moving table is installed on the gantry rack, a printing head is installed at the output end of the two-axis moving table, and a Y-axis electric sliding table is installed at the bottom of the gantry rack. The stripping mechanism is formed by splicing the multiple heating plates, a worker can control opening and closing of the multiple heating plates according to the size of a 3D printing product, so that dynamic heating adjustment in different space ranges is formed, the difficulty that waste is caused and the follow-up cooling difficulty is increased is avoided, the mode that the heating units are completely separated from the tray is adopted, and the working efficiency is improved. The cooling efficiency is synchronously improved, the pretreatment mechanism is additionally arranged on the tray, switching control over a cleaning piece and a treatment piece can be completed through cooperation of a control shaft and two friction wheels, and through the design, intermittent cleaning and pretreatment operation can be completed on the tray.

Monitoring and control system and method for additive manufacturing an in-situ macro-field thermography that uses an IR camera or near-IR camera to prioritize the data captured from an entire print layer, processes data streams layer-by-layer, and provides thermal history of previously printed layers as feedback to the control system. The system leverages one or more different mathematical thermophysical-based (MTB) models to compute a thermally related specification in order to optimize the printing sequence of islands or stripes layer-by-layer. The thermal feedback from the thermography system calibrates or updates the thermal model layer-by-layer. The system and / or method may provide real-time optimization of scanning topology in chessboard and stripe printing strategies. The method may be implemented by one or more computer programs controlling one or more computer controllers of an additive manufacturing system, such as a 3D printer implementing a metal powder bed fusion additive manufacturing process.

The invention discloses a sand mold 3D printer for casting, which is applied to the technical field of casting molds, and is characterized in that a structural frame is arranged as a support of a structure and is lifted to a horizontal height convenient to use, a sand supply device is used for extracting sand, and the sand is injected into a sand shakeout device; when the sand material is fed, the sand material is guided by the sand material hopper with a larger area, so that the material is not easy to scatter, then the sand material is guided into the sand storage box, and the arranged stirring shaft continuously rotates on the inner side of the sand storage box and is matched with the spiral blade on the outer side of the stirring shaft to continuously stir the sand material, so that the sand material continuously keeps moving; the adhesive spraying device is arranged in the sand hopper and is relatively uniform in the sand hopper, meanwhile, the effect of smashing caked sand is achieved, the situation that the structure is blocked is avoided, and during manufacturing, the molding box moves to the bottom of the structural frame, and then the adhesive spraying device moves along the horizontal guide rail.

The invention provides a 3D printing consumable management method and system based on image recognition, and relates to the technical field of 3D printing, and the method comprises the steps: collecting image data of a consumable region in a 3D printer in real time through an installed image collection device; identifying the remaining amount, the material type and the quality state of the consumables; inputting an identification result of the image data into a control system, predicting a consumption trend of the consumables according to the historical use data, and predicting the consumption trend and the use time of the consumables; according to the method, weight and temperature and humidity data collected by a sensor are combined, multi-dimensional analysis is conducted on the use conditions of the remaining amount, the material type, the quality state, the consumption trend and the use time of consumables, and when the remaining amount of the consumables is lower than a set threshold value, an alarm signal is sent out, and consumables replacement suggestions are provided. Key information such as the remaining amount of consumables, the material types and the use states of the consumables in the printer is monitored in real time through the image recognition technology, supply of the consumables is dynamically adjusted, and the real-time alarm and prediction functions are provided.

Provided in the present application are an image collection device calibration method and apparatus applied to a 3D printer. An image collection device is fixed on a nozzle of a 3D printer. The method comprises: acquiring first coordinates of at least one target point in a world coordinate system, second coordinates of a printing nozzle in the world coordinate system when an image collection device collects a two-dimensional image or a three-dimensional point cloud which comprises the at least one target point, and third coordinates of the at least one target point in an image coordinate system corresponding to the two-dimensional image or a camera coordinate system corresponding to the third-dimensional point cloud, wherein the at least one target point is a point in a calibration pattern printed by the printing nozzle; and determining extrinsic parameters of the image collection device according to the first coordinates, the second coordinates and the third coordinates, so as to calibrate the image collection device, wherein the extrinsic parameters comprise a translation vector between the image collection device and the printing nozzle. By means of the image collection device calibration method and apparatus provided in the embodiments of the present application, an image collection device can be accurately calibrated.

Disclosed in the present invention is a photocuring-type ceramic-metal composite 3D printer. A support is used for mounting and supporting an irradiation system, a spray coating mechanism, a scrape coating mechanism and a printing platform which are sequentially arranged from top to bottom. The irradiation system, the spray coating mechanism and the scrape coating mechanism each comprise a driving assembly so as to move close to or away from the printing platform. The spray coating mechanism and the scrape coating mechanism are separately connected to and communicated with a ceramic slurry conveying apparatus or a metal slurry conveying apparatus. The present invention uses a reasonable and ingenious layout and design in the vertical direction according to working distances and working features of the scrape coating mechanism, the spray coating mechanism and the irradiation system, thus enabling all the mechanisms and systems to cooperate well during operation, and enabling the present invention to have a simple and compact structure, which facilitates controlling the size of a finished product of the 3D printer. The present invention allows printing slurries of different materials simultaneously or alternately, and, in combination with photocuring technology, can be directly applied to production and manufacturing of green bodies of ceramic electronic components, thereby improving the manufacturing efficiency and quality of green bodies of ceramic electronic components.

The organ-like 3D printer temperature control system comprises a first liquid guide assembly, a first driving assembly, a pore plate and a first temperature control assembly. The first liquid guiding assembly is provided with a first liquid guiding end used for guiding out biological ink. The first driving assembly is connected to the first liquid guiding assembly and used for driving the first liquid guiding assembly to move. The pore plate is arranged below the first liquid guide assembly, the pore plate comprises an upper surface wall and a lower surface wall, the upper surface wall is concavely provided with a plurality of accommodating grooves, and each accommodating groove is used for accommodating the biological ink guided out by the first liquid guide end. The first temperature control assembly is attached to the lower surface wall and used for adjusting the temperature value of the pore plate to a first preset range. According to the invention, the accommodating grooves are integrated on the pore plate, and the temperature of the solution in each accommodating groove can be mutually conducted through the pore plate, so that the temperature of each accommodating groove can tend to be average, and operations such as large-batch printing and culturing of the organoids can be more efficiently and accurately carried out.

A five-axis 3D printer can include a tilting-rotating bed, and a print head that can be moved relative to the tilting-rotating bed in three orthogonal directions. In some embodiments, printers with tilting-rotating beds can utilize unique or uniquely adapted components and processes for printing processes and associated processes, such as calibration techniques. In some embodiments, these processes may leverage the unique features and advantages provided by such printers. In some embodiments, these processes may address or compensate for potential issues unique to such printers.

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing electric heating platform and a 3D printer, the 3D printing electric heating platform comprises a support and a platform main body, the platform main body is provided with an electric heating unit, and the platform main body further comprises a preheating auxiliary mechanism; the preheating auxiliary mechanism comprises a plurality of gas storage chambers rotationally arranged on the support; the piston piece is movably inserted into the air storage chamber; the rotating shaft is rotationally arranged at the opening; the heat insulation plate and the heat conduction plate are fixedly connected to the rotating shaft; the preheating auxiliary mechanism is arranged, the air storage chamber is used for collecting heat dissipated in the cooling process of the platform body, the piston piece is matched, stored hot air is sprayed out to the platform body for preheating, the preheating time is shortened, the preheating efficiency is improved, the situation that heat energy is wasted in vain is improved, the working time is shortened, and the energy consumption is reduced. And the use cost is saved.

A continuous fiber reinforced composite topological lattice structure design and 3D printing method comprises the steps that firstly, the elastic tensor of a unit cell structure of a 3D printing continuous fiber reinforced composite is represented, then a topological optimization model of the unit cell structure of the continuous fiber reinforced composite is constructed and divided into sub-regions, fiber tracks are generated for the sub-regions, and finally the topological lattice structure of the continuous fiber reinforced composite is obtained. The arrangement angle of the unit cell structures is calculated, the unit cell structures are periodically filled, and fiber tracks in the sub-regions are obtained; secondly, extracting fiber tracks of the sub-regions, obtaining minimum printing paths of the fiber tracks in each sub-region in combination with a periodic unit cell structure printing form, and connecting to obtain 3D printing sub-paths; then the 3D printing sub-paths are connected to obtain a 3D printing path of the continuous fiber reinforced composite topological lattice structure, and G-codes are generated in combination with the printing speed and the material feeding rate and used for sample piece manufacturing of a 3D printer; the manufacturing requirements of continuous fiber 3D printing are met.