2529 results about "3d print" patented technology

The invention relates to a 3D printing method and system for a composite prestressed reinforcing rib, and solves the main problems of weak interlayer adhesive force, large thermal stress and lack of an effective reinforcing rib adding method in the mechanical property of an existing 3D printing technology. Printing parameters and prestress release are cooperatively controlled on the basis of characteristic parameters of printing materials through a stress linkage algorithm, vertical ribs are tensioned for the second time through an interlayer compensation algorithm every time a preset number of layers are printed, and the printing parameters are dynamically adjusted through a path optimization algorithm in a high-stress area; when printing is completed and the material is not completely cured, stress distribution of all the reinforcing ribs is scanned through a stress balance algorithm and adjusted to a preset deviation range, and it is ensured that stress distribution of the whole structure is uniform; and after the printing material and the reinforcing ribs are compounded and cured, corresponding curing is performed according to the characteristics of the printing material. The 3D printing structure has the following effects that the mechanical property and reliability of the 3D printing structure are improved, and the interlayer strength and the overall stress distribution are optimized.

The invention belongs to the field of biomedical materials, and particularly discloses a preparation method and application of a 3D printing porous composite scaffold. I-type collagen and silk fibroin composite gel is modified on a 3D printing three-element doped hydroxyapatite / polycaprolactone (PCL) composite scaffold with a polydopamine coating, the three-element doped hydroxyapatite is synthesized by using a chemical precipitation method, and Mg < 2 + >, Sr < 2 + > and SeO3 < 2-> ions are doped in crystal lattices. The 3D printing porous composite scaffold provided by the invention effectively simulates the structure and function of soft and hard combination of natural bones, is helpful for regulating and controlling the stem cell fate to improve the bone regeneration process, repairs bone defects while eliminating tumors, and can be applied to bone defect repair or osteosarcoma treatment.

The invention relates to the technical field of intelligent optimization, and discloses a 3D printing powder proportion optimization method and system based on artificial intelligence. The method comprises the following steps: collecting historical data corresponding to a powder material based on a printing process of a 3D printed finished product, and performing multivariate analysis on the historical data to generate a plurality of powder compositions; the material simulation model is used for carrying out property simulation on any powder composition, outputting material property data and extracting a powder ratio meeting the printing requirement; the finished product prediction model performs finished product prediction on any powder ratio, outputs a finished product prediction result, performs matching optimization on the finished product prediction result and ideal finished product data, and screens out an optimal powder ratio and a corresponding optimal printing process; and performance testing is conducted on the actual printing finished product, if the actual printing finished product does not meet the requirement, the step is executed repeatedly, and a new optimal powder proportion and a new optimal printing technology are screened out again. According to the method, the precision of 3D printing powder proportion optimization is improved.

The invention provides a 3D printing foaming part and a preparation method and application thereof, and belongs to the technical field of 3D printing. According to the method for 3D printing of the foaming part, polyamide powder serves as a raw material, the 3D printed part is prepared, then the 3D printed part is subjected to supercritical fluid kettle pressure foaming, and the 3D printed foaming part is obtained. By controlling the melting point and the average particle size of the polyamide powder, the printing temperature and the solubility of supercritical fluid in the 3D printing foaming part, the 3D printing foaming part with high rebound resilience, bending resistance and hydrolysis resistance is obtained, and the 3D printing foaming part has wide application prospects in the field of foaming shoe materials.

The invention relates to a CFD-based in-situ 3D printing shield secondary lining constructability optimization method, and belongs to the technical field of tunnel construction. The method comprises the following steps: constructing a joint simulation platform, calibrating the size of a single-layer secondary lining, establishing a CFD simulation geometric model, setting boundary conditions of a physical field, simulating a printing process, and optimizing a construction process based on a simulation result. According to the method, the quality source items of concrete layer-by-layer stacking in the in-situ 3D printing secondary lining process are loaded and simulated by configuring the UDF, and the single-layer secondary lining size calibration result is synthesized, so that the function relationship between the quality source items and absolute coordinates in a closed calculation domain is established; according to the in-situ 3D printing shield secondary lining construction method, the effect of multi-layer printing of fresh concrete along with movement of a spray head is simulated, the overall efficiency of modeling simulation is improved, good universality is achieved, and an in-situ 3D printing shield secondary lining construction scheme with higher constructability can be planned according to different tunnels.

The invention discloses a UHPC jet 3D printing device based on an unmanned aerial vehicle. The UHPC jet 3D printing device comprises the unmanned aerial vehicle. A flight control device is arranged on the unmanned aerial vehicle and used for adjusting the flight attitude and direction in real time; a real-time data transmission device is arranged on the unmanned aerial vehicle and used for transmitting data in the flight process and monitoring result data back to the ground control center in real time; a 3D printing UHPC device is arranged below the unmanned aerial vehicle and comprises a UHPC spraying device, one end of the UHPC spraying device is connected with a high-precision spraying printing head, and the other end of the UHPC spraying device is connected with a UHPC pumping connecting device through a spraying flow device and a power transmission device. The power transmission device controls the jetting speed and the jetting angle through a jetting speed adjusting device and a jetting angle control device. The flexibility of the unmanned aerial vehicle and the jet printing technology are combined, and UHPC construction under the high-altitude, complex or dangerous environment is achieved.

The invention discloses a preparation method of a 3D printing multi-scale layered rigid-flexible impact-resistant composite material. The method comprises the following steps: designing a PLA skeleton with a multi-scale layered structure, and carrying out slicing processing to obtain an STL format file; the preparation method comprises the following steps: preparing a PLA framework through 3D printing, injecting a silicon elastomer serving as a soft material and a binder into a multi-stage layered structure of the framework, and curing to obtain the composite material. The composite material has a layered structure with three scales, the structure is realized by designing a patterned microstructure for each layer to induce a 3D printing path to stack layer by layer, and complex programming is not needed; the silicic acid gel in the gaps of each stage of layered structure is integrally formed, the composite material has the rigid-flexible coupling property, the hard PLA framework enables the composite material to have good mechanical properties, and the soft silicic acid gel provides larger deformation in the impact resisting process to achieve energy dissipation; tooth-shaped protruding interface structures which are embedded in a staggered mode are designed on the contact faces between the macroscopic layers, and the deflection direction of cracks is induced.

The invention provides a charge control electric field driven jet micro-nano 3D printing curved surface conformal multilayer circuit method and system. A high-precision conformal thin film dielectric layer is formed by utilizing charge injection electrowetting and contact electric field driving jet micro-nano 3D printing; and the high-resolution curved surface conformal circuit is manufactured by combining active residual charge elimination and non-contact electric field driving spray deposition micro-nano 3D printing. Through organic combination of active charge regulation and control and electric field driven jet micro-nano 3D printing, a high-precision conformal film dielectric layer and conductive layer conformal circuit and an interlayer interconnection circuit thereof are integrally printed. According to the curved surface conformal multilayer circuit manufacturing method, efficient, low-cost, high-precision and uniform manufacturing of the curved surface conformal multilayer circuit is achieved.

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 invention discloses a multi-material 3D printing device based on a photo-thermal coupling effect and a forming method of the multi-material 3D printing device, and relates to the field of additive manufacturing. The light source device is a semicircular convergent photo-thermal emitting device, 360-degree light source irradiation can be achieved, and illumination is uniform. After the slurry is extruded, the ultraviolet curing process can be immediately carried out, and the phenomenon that a printed entity collapses due to the influence of gravity factors caused by untimely light source irradiation can be obviously reduced. By adjusting the frequency and duty ratio of the light source, the temperature and illumination intensity of the slurry in the extrusion device are adjusted, so that the slurry is easier to extrude and form, and the formation of a hyperfine structure is realized; and a multi-axis moving platform is adopted, so that multi-angle complex structural parts can be easily formed. The extrusion device is used as a core, and high integration of the printing device is achieved. The printing efficiency is greatly improved, ultrahigh-precision and ultrahigh-height printing of a complex structure is achieved, and the problems of collapse caused by gravity factors and difficulty in forming a high-precision structural part are solved.

The invention provides a universal 3D printing global continuous path planning method and system, and relates to the technical field of 3D printing data processing or control, the method comprises the following steps: inputting an STL model and slicing to obtain each layer of section contour; calculating offset contours of the inner and outer contours by adopting vector operation; interference is eliminated when self-intersection or intersection occurs in the offset contour; constructing a path point set; establishing a mathematical model for path planning; solving the mathematical model by adopting a pointer network based on reinforcement learning to obtain a continuous filling path traversing all the path point sets; curvature constraint smoothing is carried out on the path through an n-order Bezier curve; and generating a 3D printing global continuous path by adopting a greedy search algorithm. The method is suitable for a complex porous structure, path intersection and interruption are reduced, the path length and the bending angle are minimized, and therefore the printing precision and the mechanical property are improved.

The invention belongs to the related technical field of industrial robots, and discloses a control method and system of a crawler-type 3D printing robot capable of autonomously and movably printing. The method comprises the following steps that the current position and the target position of the 3D printing robot are obtained, the current motion path of the 3D printing robot moving from the current position to the target position is planned, and the 3D printing robot moves to the target position according to the planned motion path; acquiring a real-time relative pose between the head of the 3D printing robot and a preset marker, comparing the real-time relative pose with a preset relative pose, and if the real-time relative pose is inconsistent with the preset relative pose, planning a pose adjustment path of the head and adjusting the pose of the head according to the path until the real-time relative pose is consistent with the preset relative pose; and the 3D printing robot carries out printing at the current position and posture. By means of the 3D printing robot, the problem that the 3D printing robot cannot move autonomously and adjust the pose in a self-adaptive mode is solved.

The invention discloses a 3D printing parameter optimization method and system based on machine learning, and relates to the technical field of 3D printing, and the method comprises the steps: obtaining a data set; preprocessing the data set; constructing a training model based on machine learning according to the data set; training a training model by using the data set, and taking the trained training model as a 3D printing parameter optimization model; and optimizing the 3D printing parameters to be optimized by using the 3D printing parameter optimization model. According to the method, the 3D printing parameter optimization model is obtained by constructing and training the training model based on machine learning, and the 3D printing parameters to be optimized are optimized by using the 3D printing parameter optimization model, so that the problem that determination of the 3D printing parameters in the prior art needs a large amount of computing resources and time is solved, and the determination efficiency of the 3D printing parameters is improved. And the calculation effect and accuracy of the 3D printing parameters are improved.

To provide a multiaxial 3D printing device for metal structural components and an arc-based additive manufacturing method.SOLUTION: Based on a multiaxial coordinated printing mode of a robot arm device, a movable guide rail device, and a positioner device, expansion of a six-axis robot arm enables printing in a robot arm's free posture and moving a guide rail enables movable printing following an axis along the guide rail, an open motion space of the 3D printing robot is enlarged, a two-axis positioner allows achieving multiaxial 3D printing without support for complex metal structural components, reducing material costs, and simplifying post-processing. Simultaneously, linkage linear interpolation through a world coordinate system allows effective controlling printing accuracy and print accuracy and large-format dimensions and further achieving multiaxial 3D printing for large and complex metal structural components.SELECTED DRAWING: Figure 1

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.

The invention discloses a 3D printing path optimization method for a multi-joint industrial robot, and relates to the field of 3D printing path optimization. The method comprises the steps that a normalized torque load index is generated according to the joint torque of the mechanical arm, and a layer cutting thickness sequence is generated in combination with the model surface curvature; a vibration risk index is constructed through the joint angular acceleration, the attitude interpolation weight is dynamically adjusted, and an attitude interpolation trajectory is generated; according to the distribution characteristics of the temperature field around the path point, calculating a thermal coupling factor, generating a thermal avoidance path offset, and correcting the path point; calculating a collision risk score based on the minimum Euclidean distance between the path point and the obstacle model; and fusing the cutting layer thickness, the vibration risk, the thermal coupling factor and the collision risk score, and constructing a global path scoring function. Through comprehensive consideration of mechanical arm load, vibration risk, heat accumulation and collision risk, printing precision and quality are effectively improved, path smoothness is optimized, vibration and heat influences are reduced, material deformation is avoided, and stability of the printing process is ensured.

The invention belongs to the technical field of 3D printing, relates to 3D printing equipment and a printing control method thereof, and solves the problems that printing parameters cannot be adjusted in real time and the printing effect cannot be ensured. The 3D printing equipment comprises a mechanical arm controlled by an industrial robot, a printing device is arranged on the mechanical arm, the industrial robot and the printing device are connected with an upper computer, the printing device comprises a material storing and feeding mechanism and a screw extrusion mechanism which are arranged on a fixing support, and the discharging end of the material storing and feeding mechanism is connected with the feeding end of the screw extrusion mechanism; the upper computer comprises a three-dimensional model layered slicing module, a path optimization module and a dynamic cooperative control module. A laser distance measuring sensor is arranged on the outer side of a nozzle of the printing device and used for synchronously adjusting the motion trail of the mechanical arm. According to the equipment, the melt extrusion type printing mechanism is adopted, the product performance is improved, the application range of 3D printing is expanded, cooperation of the printing equipment and the mechanical arm is enhanced, specific parameters can be adjusted according to actual operation, and the printing quality is guaranteed.

The invention discloses a 3D printing bamboo aggregate concrete thermal insulation structure integrated wall and a preparation method thereof. The raw materials of the wall body cover a cementing material, a fine aggregate, a bamboo aggregate, fibers, a thermal insulation material, water, a water reducing agent and the like, and further comprise a self-repairing and environment-sensitive material. The bamboo aggregate is selected from moso bamboos of specific age and is specially treated; high-adaptability varieties are selected as cementing materials, and part of the cementing materials can be used as industrial solid wastes. During preparation, the bamboo aggregate is pretreated firstly, then raw materials are premixed, the self-repairing and environment-sensitive materials are implanted, the intelligent fibers are added, the thermal insulation materials are mixed, water is added, the mixture is stirred to be in a printable state, then 3D printing is conducted, and finally curing is conducted. Compared with the prior art, the method has the remarkable advantages that the low-carbon layer surface is achieved, bamboo materials are renewable, processing energy consumption is low, wall heat preservation is excellent, and energy conservation and emission reduction can be achieved; structurally, the high-performance material and the optimized bamboo aggregate guarantee the strength, and intelligent monitoring and early warning guarantee the safety; in the modeling aspect, 3D, free shaping and function fusion are achieved through printing; the composite system is high in heat insulation performance and long in service life. The invention has prominent innovativeness, and is expected to renovate the standard of the building wall.

The invention discloses a 3D printing extrusion monitoring method and system based on continuous image analysis. The method comprises the following steps: acquiring image data of a printing head of a 3D printing platform at a plurality of continuous time points; according to the image data, a printing model part of the printing head is determined based on an image recognition algorithm; according to the image data, the discharging flow corresponding to the printing head is calculated based on a continuous image recognition algorithm; and according to the printing model part and the discharging flow, the flow abnormal condition corresponding to the printing head is analyzed. Therefore, accurate flow anomaly detection based on image analysis can be realized, the stability and the printing quality of the 3D printing process are improved, and the printing defect risk caused by flow anomaly is reduced.

The invention discloses a 3D printing self-adaptive wing design method based on generative artificial intelligence, and relates to the crossing field of 3D printing and artificial intelligence. In order to solve the technical problems of complex manufacturing, low reliability and large weight of a traditional process in the prior art, the technical scheme provided by the invention comprises the following steps: pre-training a large language model to obtain a trained basic model; receiving self-adaptive wing structure design parameters input by a user and generating a design scheme script; calling three-dimensional modeling software, automatically establishing a wing three-dimensional model based on the design scheme script, and outputting a model file; calling simulation analysis software, performing wing performance simulation analysis based on the model file, and outputting analysis result data; and calling the basic model to carry out design scheme evaluation and iterative optimization based on the analysis result data until an optimized model file meeting the design requirement is generated. The method can be applied to intelligent design and automatic manufacturing of self-adaptive wing structures of aerospace crafts.

The invention discloses a 3D printed piece structure enhancement process based on continuous fiber prepreg filaments, and relates to the technical field of 3D printed piece structure enhancement, and the 3D printed piece structure enhancement process comprises the following steps: step 1, determining a direction and a region needing to be enhanced in a 3D printed piece; 2, digging or reserving a hole channel or a channel in an area needing to be reinforced along the direction needing to be reinforced so as to insert continuous fiber prepreg filaments; and 3, inserting the continuous fiber prepreg filaments into the pore channels or the channels, and then fixing the continuous fiber prepreg filaments. According to the method, the structure of the 3D printing piece can be efficiently enhanced.

The invention provides a concrete 3D printing self-adaptive deviation correction method and system, and relates to the technical field of intelligent construction and additive manufacturing, the method comprises the following steps: determining a deviation field matrix based on three-dimensional point cloud data, a two-dimensional texture image and printing parameters of a printed concrete layer; and extracting a two-dimensional texture image based on a convolutional neural network model, determining a defect feature data set, inputting the deviation field matrix, the defect feature data set and the printing parameters into a deformation trend prediction model to obtain a deformation trend set, adjusting the printing parameters of the to-be-printed concrete layer, and generating a target concrete member. The technical problems that traditional concrete 3D printing depends on a preset program, dynamic changes of material rheological characteristics cannot be sensed in real time, the extrusion shape deviates from a design target, interlayer dislocation and deformation can be accumulated layer by layer, and structural instability is caused are solved, and the effect of improving the stability of a printed and formed concrete member is achieved.

The invention relates to the technical field of 3D printing building materials, in particular to a 3D printing geopolymer composite material with low drying shrinkage and a preparation method thereof.The 3D printing geopolymer composite material is prepared from, by mass, 400 parts of slag powder, 320 parts of fly ash, 80 parts of steel slag micro powder, 1200 parts of quartz sand, 5.1-25.6 parts of sodium hydroxide, 46.4-66.9 parts of sodium silicate, 8 parts of barium chloride and 296 parts of water. The preparation method comprises the following steps: fully mixing the slag powder, the fly ash, the steel slag micro-powder and the quartz sand according to a preset mass ratio to obtain a uniform basic powder mixture; adding an alkali activator and barium chloride into the basic powder mixture, and continuously mixing until the mixture is uniform to obtain a first mixture; and adding water into the first mixture according to a preset water-binder ratio, and carrying out stirring treatment according to a preset stirring method to obtain the 3D printing geopolymer composite material with low drying shrinkage. According to the invention, the drying shrinkage can be reduced.

The invention relates to the technical field of false tooth machining, and provides false tooth 3D printing forming equipment and a false tooth machining method.The false tooth 3D printing forming equipment comprises a feeding system and a forming system and further comprises a printing box, a printing frame, a printing position adjusting mechanism with a self-locking function, a hollow material carrying plate, a material taking power assembly and a preheating assembly; a processing box door is detachably arranged on one side of the printing box in a sealed mode, the printing frame is arranged on the inner bottom wall of the printing box, the feeding system is installed on the printing frame, the printing position adjusting mechanism is installed on the printing frame, the forming system is installed on the printing frame and communicates with the feeding system, and the hollow material carrying plate is arranged on the printing frame in a sliding mode. A material taking baffle is arranged on one side of the hollow material carrying plate. By means of the technical scheme, the problem that in the prior art, when false teeth are machined through false tooth 3D printing forming equipment, the false teeth are heated unevenly, and consequently the false teeth deform is solved.

The invention discloses a vertical axis compensation method for 3D printing, a 3D printing device and a computer readable storage medium. The vertical compensation method comprises the steps that the horizontal position of a printing head at a target grid point of a 3D printing curved surface is determined; obtaining a target vertical position and a target vertical speed of the target grid point based on the horizontal position; and performing acceleration and deceleration planning on the printing head based on the current vertical position, the current speed, the target vertical position and the target vertical speed of the printing head at the current grid point where the 3D printing curved surface is located so as to control the printing head to smoothly move from the current grid point to the target grid point in the vertical direction. By means of the vertical axis compensation method for 3D printing, the vertical extraction compensation speed of 3D printing can be smoother, the extrusion synchronism effect is better, and therefore the processing efficiency of 3D printing is improved.

The invention relates to the technical field of additive manufacturing 3D printing, and discloses a 3D printing head for a continuous fiber reinforced composite material and a printing method. A concentric circle type step temperature control module is used for applying preset step type temperature fields distributed from inside to outside in a gradient mode to adjacent printing layer deposition tows and current deposition tows in the printing process, and the grain size and uniformity of crystalline resin in the adjacent printing layer deposition tows and the current deposition tows are regulated and controlled. The large deformation degree of a printed product after forming is avoided; and meanwhile, in the printing process, secondary heating melting is conducted on deposition tows of adjacent printing layers, under the action of a preset pressure field, fusion of the deposition tows of the adjacent printing layers and current deposition tows is promoted, the bonding strength between printing layers / channels is improved, and then the mechanical property of a 3D printing continuous fiber additive manufacturing printing product is improved.

The utility model relates to the technical field of consumable pretreatment, in particular to an intelligent 3D printing consumable drying box which comprises a shell and a drying module. The charging tray module comprises a weighing sensor, a charging tray roller tray and a charging tray; an RFID tag is arranged on the charging tray; the data acquisition module comprises an electronic device supporting plate, an RFID card reader, a temperature and humidity sensor and a mainboard; and the dehumidifying and condensing module is embedded in one side of the drying module. The drying module is used for drying consumables, the temperature and humidity of air are monitored in real time through the temperature and humidity sensor, the main board controls the dehumidification condensation module to work according to the monitoring result, water vapor in the air is condensed into water, the water is automatically discharged, and it is ensured that the low air humidity is maintained in the drying box. The RFID tag and the RFID card reader are introduced, automatic identification and reading of consumable information are achieved, and the intelligent level and the automation level of the drying box are improved.

The invention discloses a high-strength quick-setting 3D printing concrete material based on nanocrystalline nucleus synergistic excitation and a forming preparation method thereof, and belongs to the technical field of building materials. The high-strength quick-setting 3D printing concrete material based on nanocrystalline nucleus synergistic excitation is prepared from the following components in parts by weight: 40 to 50 parts of phosphogypsum, 20 to 30 parts of Portland cement, 5 to 15 parts of sulphoaluminate cement, 1 to 5 parts of nanocrystalline nucleus agent, 0.5 to 1 part of carbon nanotube, 20 to 40 parts of phosphogypsum lightweight aggregate, 1 to 3 parts of additive, 1 to 3 parts of steel fiber and 0.1 to 0.3 part of hydroxypropyl methyl cellulose. According to the invention, by introducing a nano crystal nucleus synergistic excitation technology and combining with a 3D printing process, high performance of the phosphogypsum-based concrete material is realized, and a new material solution is provided for sustainable development of the building field.

The invention provides a 3D printing path planning method and system for a three-dimensional curved surface. The method comprises the steps that printing area identification is conducted on a 3D printing model, a curved surface area is obtained, slicing processing is conducted according to the dynamic slice layer thickness, a printing path is obtained through a preset printing path planning method according to the dynamic slice layer thickness, node representation is conducted on the printing path, weight values between path nodes are determined, and a printing path sorting table is generated; 3D printing is executed, detection is conducted through a preset visual sensor, curved surface parameters are obtained, and 3D printing parameters are adjusted according to the curved surface parameters; according to the method, self-adaptive layering processing is carried out by fusing the material performance, the printer parameters and the 3D printing requirements, the path is represented in a nodal mode, the weight values between the nodes are constructed, the path sorting table is generated accordingly, transition path planning and optimization are carried out, 3D printing path planning and optimization of the three-dimensional curved surface are achieved, and the 3D printing efficiency and the printing quality are improved.

The utility model discloses a stock bin, a 3D printing feeding device and a 3D printing system, the stock bin comprises a box body, a communicating piece and a guiding piece, and the box body is provided with an inner cavity; the communicating piece is arranged in the inner cavity, the communicating piece is provided with a discharging channel and at least one feeding channel, and the discharging channel is communicated with the feeding channel; the communicating piece further comprises a discharging releasing ring, one end of the discharging releasing ring extends into the discharging channel, the other end of the discharging releasing ring extends out of the discharging channel, and the discharging releasing ring is used for locking or releasing the extending material guiding pipe extending out of the box body from the discharging releasing ring. And the guide piece penetrates to the inner cavity from the outside of the box body and is movably connected with the box body so as to abut against the discharging release ring. The guiding piece movably abuts against the discharging releasing ring, the discharging releasing ring can be switched from the locking state to the releasing state, then a user can conveniently pull out the extending material guiding pipe from the discharging releasing ring from the outside of the box body, and therefore the user can conveniently clean broken wire materials extending out of the material guiding pipe.