37results about How to "Save printing materials" patented technology

The invention discloses a model area change rate-based adaptive hierarchical processing method. The method comprises the following steps of importing an STL model and establishing a model topological structure; performing uniform hierarchical slicing on the model with the highest precision, obtaining a two-dimensional polygon contour layer and calculating an area of each layer of a polygon after slicing; performing derivation on the area of each layer of the polygon to obtain an area change rate of the model; comparing the calculated area change rate with a threshold according to a relationship between the area change rate of the model and the printing precision, and obtaining a printing precision distribution situation of the model in a printing direction; calculating hierarchical layer thickness data required for model printing, and performing processing by using a rounding-off method to generate adaptive hierarchical layer thickness data; and reading the hierarchical layer thickness data by a slicing engine, and performing adaptive layer thickness slicing on the model to obtain a gcode file required for printing. According to the method, while the detail characteristics of the model are ensured, the forming speed of the model is increased, and the printing time is effectively shortened.

The invention discloses a supporting device for three-dimensional printing. The supporting device for three-dimensional printing comprises a rack, a supporting unit and a lifting unit, wherein the supporting unit is spliced by multiple supporting plates and arranged just under a three-dimensional forming region of a three-dimensional printer; and the lifting unit is installed on the rack and is used for driving the supporting plates to move to required supporting positions to support a three-dimensional model to be printed. The invention also discloses a three-dimensional printing method. The original supporting modules needing to be printed and separated are replaced with the liftable supporting plates of the supporting device disclosed by the invention, and thus saving materials and improving the printing efficiency. Meanwhile, according to the device and the method, a supporting part is replaced by external machinery, so that the original printer algorithm structure is optimized, and the controllability is good.

The invention discloses a TPMS-based model structure optimization method and device for 3D printing. The method comprises a step of performing finite element analysis on a given model to obtain a stress distribution of the model, a step of defining an adaptive TPMS periodic function according to the geometrical shape of the given model and the stress distribution, a step of initializing a pipelinewidth, generating an internal pipeline according to the TPMS periodic function and the pipeline width, a step of recalculating the stress distribution of the model and judging whether a force requirement is satisfied or not, and generating an entry point on the surface of the model to be an inlet for injecting a material into the pipeline if so, otherwise, optimizing the TPMS periodic function and the pipe width according to a new stress distribution, generating an internal pipeline according to the optimized TPMS periodic function and the pipe width, and performing the step repeatedly untilthe stress distribution satisfies the force requirements. According to a structure optimized by using the method of the invention, only printing an outer casing and the inner pipeline of the model isneeded, and the effects of save a printing material and saving a printing time are achieved.

The embodiment of the invention provides a method and a device assisted for 3D printing and a 3D printer. The method comprises the following steps: determining application position, size and direction of support force required for at least one part in an object in the printing process of the object according to an object printing model file; and controlling a noncontact support device to supply action force of the required support force for the at least one part in the printing process according to the application position, the size and the direction of the required support force. The embodiment of the invention provides a scheme assisted for 3D printing.

The invention discloses a rock coarse fracture seepage simulation model and a making method. The rock coarse fracture seepage simulation model comprises a fracture main board, a left mounting board, a right mounting board, an upper mounting board and a lower mounting board, the fracture main board is of a cuboid structure, a hydrophobic area is arranged on one side of the cuboid structure, a water gathering area is arranged on the other opposite side, the hydrophobic area is communicated with the water gathering area, the outer side of the hydrophobic area is matched with the left mounting board, and the outer side of the water gathering area is matched with the right mounting board; the upper surface and the lower surface of the cuboid structure are respectively matched with the upper mounting board and the lower mounting board, and a pressure measuring hole communicated with a communicating area between the hydrophobic area and the water gathering area is formed in the upper mounting board. 3D printing technology is adopted to manufacture the fracture main board which is fixed through the upper, lower, left and right mounting boards, and a bolt or a water pressure sensor is mounted on each mounting board, so that the making method of the rock coarse fracture seepage simulation model is simple to make, convenient to experiment and capable of reflecting rock fracture seepage characteristics more really and more accurately.

The invention relates to the technical field of tunnel engineering, in particular to grout spraying equipment for a tunnel roof-supporting shield. The grout spraying equipment comprises a walking track, a shield platform located on the walking track and a shield machine head arranged at the front end of the shield platform, and further comprises an automatic mixing device, residual soil 3D printing equipment, a spray head and an automatic conveying device, wherein a residual soil conveying pipe is connected to the shield machine head; the automatic mixing device is fixedly installed on the shield platform, and communicates with the residual soil conveying pipe, the residual soil 3D printing equipment is fixedly installed on the shield platform and is adjacent to the automatic mixing device; the automatic conveying device is arranged between the automatic mixing device and the residual soil 3D printing equipment, and the spray head is connected to the residual soil 3D printing equipment. According to the grout spraying equipment for the tunnel roof-supporting shield, zero worker participation in the primary lining process of the tunnel shield is realized, and the residue soil produced by the shield is recycled, so that the cost is reduced, the environmental pollution is reduced, and the efficient construction is realized.

The embodiment of the invention provides a 3D printing assisting method and device as well as a 3D printer. The method comprises the steps of at least determining the application position and power of a supporting force required by at least one part of an object in the printing process of the object according to a printing model file of the object; and controlling a non-contact supporting device to provide an acting force meeting the requirement for the required supporting force to the at least one part in the printing process according to the application position and power of the required supporting force. The embodiment of the invention provides a 3D printing assisting scheme.

The invention discloses a rotating nozzle device, a 3D printer and a printing method. The rotating nozzle device comprises a supporting shaft, a rotating shaft and a nozzle. The supporting shaft is mounted at the bottom of the body of the 3D printer. One end of the rotating shaft is connected with the supporting shaft through a rotating joint, and the other end of the rotating shaft is provided with the nozzle. A driver and a sensor are arranged inside the rotating joint. The sensor is connected with a processor and the driver of the 3D printer. The driver is connected with the rotating joint. According to the rotating nozzle device, the 3D printer and the printing method, the traditional morphological structure of the printing nozzle is broken through, and the problem that the side protruding part of a printed model needs to be supported is solved; printing materials are reduced, printing efficiency is improved, and the integrity of the finally-printed model is guaranteed; convenience is brought to switching of the nozzle directions in the printing process, and the flexibility of the rotating nozzle for printing the 3D model is improved.

The invention relates to a 3D printed mechanical bionic auricle cartilage tissue engineering scaffold and a manufacturing method thereof. A personalized auricle cartilage scaffold is printed accordingto an individual auricle cartilage structure model of a patient through a 3D printing technology, and the tissue engineering scaffold is formed by printing a biodegradable composite material (PLCL-PCL) of Poly-L-lactide-caprolactone (PLCL) and polycaprolactone (PCL) capable of being subjected to 3D printing disclosed in CN201910139657.9. The frameless, porous and pore-through auricle cartilage tissue engineering scaffold is good in biocompatibility, degradability and thermal stability, has a fine and complex three-dimensional structure of auricle cartilage, has the mechanical property characteristic similar to that of a corresponding anatomical region of natural human auricle cartilage tissue, is adaptive to the mechanical property of the natural auricle cartilage, and can be applied to construction of personalized tissue engineering auricle cartilage.

The invention discloses a heat dissipation mechanism for a 3D printer spray head, and relates to the technical field of 3D printers. The heat dissipation mechanism comprises a heat insulation barrel assembly, a mounting face plate, a refrigeration suite and a spray head unit; the refrigeration suite and the heat insulation barrel assembly are in threaded rotation, and the spray head unit is matched with the heat insulation barrel assembly in a sleeving mode; and condensation assemblies are matched with insertion holes in an inserted mode, volute-shaped water pipes are fixedly connected between wave-shaped water pipes, the other ends of the wave-shaped water pipes are fixedly connected with water storage tanks; and micro water pumps are arranged inside the water storage tanks. According to the heat dissipation mechanism for the 3D printer spray head, the spray head unit is arranged in the heat insulation barrel assembly, the refrigeration suite is started, and heat exchange is carried out on the interior of a heat insulation barrel through the condensation assemblies, so that a low-temperature environment is kept inside the heat insulation barrel, and the situation that blockage is caused due to the fact that printing materials start to be softened on the upper portion of an L-shaped feeding pipe due to the fact that the feeding pipe is heated due to long-time heating of a heater is avoided, the printing materials are saved, and the printing efficiency is improved; and after printing is finished, water collecting boxes are pulled out from the mounting face plate, and condensate water is poured out.

The invention discloses a 3D printer with a monitoring device, which comprises a main body, a printing platform is arranged at the bottom of the main body, a guide rod is arranged on the top of the main body, a nozzle base is arranged on the guide rod, and a nozzle base is installed on the bottom of the nozzle base. There is a spray head, the top of the base of the spray head is provided with a wire pulley, a slide rail is provided around the top of the main body and on the lower side of the guide rod, a slide block is provided on the slide rail, and a probe is provided at the bottom of the slide block. By setting the probe inside the printer, the working condition of the printer can be monitored in real time, and problems can be dealt with in time, improving the printing quality and precision, saving printing time and printing materials, and the present invention is simple and compact in structure and small in size , low production cost, and meet today's increasing consumer demand for 3D printers.

The invention relates to a vertebral column stabilizer and particularly relates to a 3D-printed artificial vertebral body interior fixing device. The 3D-printed artificial vertebral body interior fixing device comprises a prolongable member and 3D-printed members located at the two ends of the prolongable member, wherein the prolongable member comprises an outer sleeve and supporting platforms which are separately located at the two ends of the outer sleeve, and the 3D-printed members are located at outer sides of the supporting platforms and are fixedly connected with the supporting platforms; a sleeve wall of the outer sleeve comprises a sleeve outer wall and a sleeve inner wall, the sleeve outer wall is polygonal, the sleeve inner wall is provided with a thread, and a plurality of long-strip holes are uniformly formed in the sleeve wall of the outer sleeve in a spaced manner and are formed symmetrically relative to the axis of the outer sleeve. According to the device, 3D-printed member modules and non-3D-printed member modules are assembled, a simple prolongable mode with stable mechanics is developed, both 3D-printed parts and non-3D-printed parts have different models, and the different models can be modularly assembled, so that the saving of printing materials is facilitated, the printing time is shortened, the flexibility of operating is improved, a slit of a artificialvertebral body and a bone interface is reduced, fusion is promoted, and the forward stability is facilitated.

The invention discloses a pulmonary artery atresia combined large main pulmonary collateral vessel model manufacturing method. The manufacturing method comprises the following steps: acquiring heart enhanced CT data through CT scanning; segmenting and reconstructing the CT data through Mimics software to obtain a 3D digital model; selecting and reserving parts of an aorta, an upper body branch artery, a bronchus, a collateral vessel and a pulmonary artery in the 3D digital model; arranging supporting columns among the parts of the aorta, the upper body branch artery, the bronchus, the collateral vessel and the pulmonary artery, additionally arranging a chassis at the bottom, and forming a to-be-printed model; and inputting to-be-printed model data into a 3D printer, and manufacturing a solid model. Key organs such as the aorta, the upper body branch artery, the bronchus, the collateral vessel and the pulmonary artery for evaluating the illness state of patients with pulmonary artery atresia combined with ventricular septal defect and thick main lung collateral vessel are selected from the 3D digital model, data of other secondary structures are removed, the printing workload is reduced, printing materials are saved, the model manufacturing time is shortened, and the efficiency is improved.