101results about How to "Improve printing efficiency" patented technology

The invention discloses a 3D printing method with a coating supporting structure and a supporting assembly, and belongs to the technical field of additive manufacturing. According to the method, a traditional thought of printing a second structural material is abandoned, a functional coating used for reducing the binding force is innovatively arranged on the upper surface of a formed supporting structure, and then a workpiece is printed on the coating. The coating provides temporary bonding force in the printing process so as to stabilize a workpiece, and after printing, the bonding force is greatly weakened so that the support can be easily peeled off. The invention further provides a post-processing G code program for realizing the method and an integrated gluing device, and the post-processing G code program and the integrated gluing device can realize the expansion and contraction of the refill through mechanical triggering by utilizing the movement of the printer without additional driving. The support assembly is a ready-to-use component which is pre-coated with the coating. According to the method, the contradictions of poor supporting quality of a single material and high supporting cost of multiple materials are fundamentally solved, stable printing, easy removal and high interface quality are realized on the premise of not increasing the types of printing materials and not depending on multi-nozzle equipment, the cost is remarkably reduced, and the efficiency is improved.

The invention provides an adjustable liquid metal printing nozzle and a liquid metal 3D printing method, and mainly relates to the technical field of liquid metal printing. An adjustable liquid metal printing nozzle comprises a nozzle assembly, a driving assembly, an adjusting assembly and a liquid inlet assembly. Wherein the driving assembly is in transmission connection with the adjusting assembly and is used for providing driving force required by adjustment; the liquid inlet assembly communicates with the interior of the nozzle assembly to form a liquid metal conveying channel. The adjusting assembly is arranged at the joint of the liquid inlet assembly and the nozzle assembly and used for controlling the opening number of spraying holes of the nozzle assembly. The device has the beneficial effects that through precise regulation and control of the opening number of the spraying holes of the nozzle assembly, the dual functions of variable-size part printing adaptation and flow dynamic adjustment are achieved, and the solidification condition of a printed part is optimized.

The utility model discloses a battery end face jet printing device which comprises a main body frame, a moving mechanism, a jet printing module and a battery clamping mechanism. The spray printing module is movably connected to the main body frame through the arrangement of the moving mechanism, and the spray printing module comprises at least one spray head mechanism. The battery clamping mechanism is provided with one or more placing positions for placing batteries to be processed; an opening for exposing the end surface of the to-be-processed battery is formed in the placement position, so that at least one end surface of the to-be-processed battery can be exposed corresponding to the spray head mechanism; the jet printing range of each nozzle mechanism can cover the end face of at least one battery to be processed. Through cooperation of the main body frame and the battery clamping mechanism, the jet printing efficiency of the battery end face is effectively improved, the jet printing requirements of the battery end faces of various different models can be met, and the battery end face jet printing procedure is more automatic.

The utility model discloses a printing device with a three-dimensional multi-surface printing function, which comprises an operating platform, a plurality of fixed rods arranged on the operating platform, a top plate arranged at the end parts of the fixed rods, a movable plate arranged on the fixed rods in a sliding manner, a mounting frame arranged on the movable plate, a printing net arranged in the mounting frame, a driving mechanism arranged on the top plate, and a transverse plate arranged on the movable plate, the output end of the second electric push rod is connected with a mounting plate; a mounting rack is mounted below the mounting plate; a mounting rod is arranged in the mounting rack; an extrusion roller is rotationally arranged on the mounting rod; the two sides of the box body are printed at the same time, time is greatly saved through the design, printing efficiency is improved, operation errors possibly caused by overturning of the box body are reduced, and stability of printing quality is further guaranteed.

The application discloses a kind of composite 3D printer and its printing method, 3D printer includes light-cured printing module and fusion printing module, light-cured printing module includes first printing platform, first printing platform top is equipped with blade coating component, fusion printing module includes second printing platform, and second printing platform is equipped with nozzle assembly, nozzle assembly includes Y-axis drive unit, and the output end of Y-axis drive unit is equipped with nozzle unit;Through the mode that blade coating component and nozzle assembly are alternately printed in first printing platform and second printing platform, so that 3D printer can print multiple different material articles and print composite material articles simultaneously;Solve the problem that most of the existing 3D printers are limited to single-material printing, resulting in low printing efficiency and low practicality.

The application relates to an inkjet printing method, an inkjet printing device and an inkjet printer. The method comprises the following steps: obtaining a to-be-printed image, performing fragmentation processing on the to-be-printed image to obtain a to-be-printed image corresponding fragmentation image set, the fragmentation image set comprising a plurality of fragmentation images obtained by performing fragmentation processing on the to-be-printed image, and there being an overlapping area between two adjacent fragmentation images; determining a fragmentation depth map corresponding to each fragmentation image in the fragmentation image set by using a pre-trained depth estimation model to obtain a fragmentation depth map set; splicing the fragmentation depth maps in the fragmentation depth map set according to the overlapping area between two adjacent fragmentation depth maps to obtain a depth map corresponding to the to-be-printed image; and performing slicing based on the depth map to obtain slicing data, wherein the slicing data is used for printing by the printer to obtain a three-dimensional printed part. Thus, the oil painting reproduction process can be simplified, the efficiency and effect of oil painting printing can be improved, and the user experience can be improved.

The utility model discloses a kind of emulsifiable concentrate pesticide packaging bag printing with turnover device, comprising: processing platform, the control panel is fixedly installed on the processing platform top surface, the control panel side is provided with printing equipment, turnover unit, the turnover unit is placed in printing equipment side, the turnover unit includes gear and tooth frame, gear can be driven to rotate for the tooth frame moving, to the emulsifiable concentrate pesticide packaging bag printing of the clamping unit clamping is turned over, clamping unit, the clamping unit is placed in turnover unit inboard, the clamping unit includes slide bar, inclined frame and clamping frame, for the slide bar of opposite motion can extrude inclined frame, make two clamping frames opposite motion, emulsifiable concentrate pesticide packaging bag is clamped quickly, under the control of control panel limit, telescopic rod and printing equipment work can be controlled, under the control of printing equipment limit, emulsifiable concentrate pesticide packaging bag printing processing can be controlled.

The utility model discloses an improved artificial leather pattern printing device, it includes the fixed frame, and the fixed frame inner chamber lateral wall one end is equipped with two conveying rollers, and the fixed frame lateral wall is equipped with the impression assembly, and the fixed frame inner chamber lateral wall other end is equipped with two guide rollers, and the fixed frame inner chamber lateral wall one end is equipped with the temperature adjusting element, this kind of improved artificial leather pattern printing device, when need to one -sided printing of artificial leather, and the card plate is removed from one of the card slots by the knob drive, through the opening hydraulic cylinder drive moving block movement, thereby make the card plate drive moving plate movement, in turn make the pivot drive hot printing roller moves to the required position, through the opening motor drive hot printing roller rotation printing to artificial leather, when need double -sided printing, the knob is moved to the middle, and the hydraulic cylinder drive two hot printing rollers move simultaneously, and the double -sided printing is convenient, and effectively improve printing efficiency, secondly, the artificial leather is cooled and is shaped after printing through the temperature adjusting element, and effectively improve the pattern durability.

The application discloses a kind of 3D printing equipment and printing method of magnetic control microsphere space lattice, it is related to printing forming technical field, equipment includes printing station, drive mechanism, sintering mechanism, control mechanism and at least one grabbing head;Printing station is used to stack multiple loose magnetic microspheres as support medium;Grabbing head is used to grab each forming magnetic microsphere, and can be released to the predetermined spatial position above the support medium of printing station;Drive mechanism is connected with grabbing head, and is used to drive grabbing head to move in space;Sintering mechanism is used to sinter the adjacent forming magnetic microsphere on printing station;Control mechanism is connected with grabbing head, drive mechanism and sintering mechanism, and can control the action of grabbing head, drive mechanism and sintering mechanism respectively.The 3D printing equipment and printing method of magnetic control microsphere space lattice provided by the application improve printing efficiency, material utilization and forming piece performance.

According to the model conveying platform for 3D continuous printing, a conveying device comprises a driving assembly and a conveying belt, the conveying belt is movably wound and assembled relative to a hot bed, the conveying belt defines a unit rotation distance in the preset conveying direction, and the driving assembly is in driving connection with the conveying belt; the driving device is used for driving the conveyor belt to rotate relative to the hot bed according to unit rotation distance; the belt body area, passing through the bed surface of the hot bed, of the conveying belt is configured to be a printing area, and the printing area is used for bearing a printing model. And the driving assembly is in driving connection with the conveying belt and can be used for driving the conveying belt to rotate relative to the hot bed according to the unit rotation distance, so that after the last printing is finished, a new printing area is formed on the hot bed after the printing model is moved out of a previous so-called printing area by moving the length of the unit rotation distance. And the next printing model is printed, so that the 3D printer can perform continuous printing in a new printing area.

The utility model discloses a paperboard lifting mechanism for paperboard printing, which comprises a bottom plate, and the top of the bottom plate is fixedly connected with a driving box. When the motor is adopted to drive the first threaded rod to rotate, the movable frame stably ascends or descends in the threaded direction, the supporting column moves up and down, and therefore the bearing plate is driven to achieve position adjustment in the vertical direction. By means of the structural design, the paperboard is evenly stressed in the lifting process, inclination or shaking is avoided, and the stability of the paperboard is guaranteed. When the electric cylinder pushes the sliding block to slide in the sliding groove, the connecting rod drives the bearing plate to rotate around the hinge point, the inclination angle of the bearing plate can be adjusted according to needs, paperboards can be smoothly conveyed to the surface of a conveyor, the paperboard conveying convenience and efficiency are improved, the paperboard printing efficiency is indirectly improved, and the whole lifting mechanism is compact in structure, small in occupied space and convenient to use. The device is convenient to install and maintain, is suitable for various paperboard printing production lines, and has the advantage of being good in lifting effect.

The application discloses a kind of print substrate posture self-adaptive intensive inkjet printing method, device and equipment, solve the problem of low efficiency that only one print substrate can be printed in prior art, the method comprises: obtaining the position information and profile information of each print substrate on print substrate carrier;According to the profile information of each print substrate, the printing data of the printing file corresponding to each print substrate is processed to make the position of ink droplet ejected on each print substrate consistent with the expected ink ejection position on the print substrate;According to the position information of each print substrate on the print substrate carrier, obtain the printing data in the processed printing file relative to the print substrate carrier position information;According to the position information, output the printing data of each printing file on the corresponding print substrate inkjet printing.The application saves the time of accurately placing print substrate, and multiple print substrates can be printed simultaneously, improving the printing efficiency.

This invention discloses an integrated multi-nozzle air-assisted 3D printing nozzle, comprising an upper horizontal plate, a lower horizontal plate, m material feed cylinders, and a heating element, where m is 3-100. The upper horizontal plate is located above the lower horizontal plate, and the two together form an air chamber. An air inlet is provided on the air chamber. The top wall of the air chamber has m material feed cylinder channels, and the bottom wall has m gas channels. The m material feed cylinder channels and m gas channels are all vertically arranged and simultaneously connected to the air chamber. The m material feed cylinders are vertically arranged, and each material feed cylinder has a discharge port at its lower end. The m material feed cylinder channels, m gas channels, and m material feed cylinders correspond one-to-one. The top of the i-th material feed cylinder is located within and sealed to the i-th material feed cylinder channel, and its bottom is located within the i-th gas channel, with a gap between them for gas passage, i = 1, 2, ..., m. This invention has a simple structure and effectively solves the problems of existing technologies that cannot achieve multi-nozzle printing and simultaneous air-assisted 3D printing of multiple materials and colors.

The utility model relates to the technical field of printing, in particular to a photochromic ink temperature control color developing printing device. The photochromic ink temperature control color developing printing device comprises a supporting table, an electric sliding rail, an electric sliding block, a printing plate, an illuminating lamp, a supporting frame and a material storage barrel, the electric sliding rail is installed on the rear side of the supporting table, the electric sliding block is arranged on the electric sliding rail in a sliding mode, the printing plate is fixedly connected to the front side of the electric sliding block, and the illuminating lamp is arranged on the supporting frame. Illuminating lamps are arranged on the left side and the right side in the supporting table, a supporting frame is fixedly connected to the rear side of the supporting table, and a storage barrel is fixedly connected to the supporting frame. The controller is started, the heating temperature is set, the heating pipe starts to operate, the photochromic ink in the storage barrel is heated, it is ensured that the ink can show the preset color or pattern during printing, and therefore the situation that the printing quality is reduced due to the fact that the color of a printed finished product is unstable is avoided.

The application discloses a kind of anti-fake color-changing ink and printing process for flat paper to print two-dimensional code, belong to the technical field of ink for anti-fake.The anti-fake color-changing ink according to weight fraction, including: acrylic emulsion 35-40 parts, polyurethane emulsion 15-20 parts, bisphenol A type epoxy resin 5-8 parts, thermochromic material 6-10 parts, hydrogel coated thermochromic material 2-5 parts, temperature-sensitive color-changing capsule 5-8 parts, scratch-resistant additive 2-3 parts, first coupling agent 1-2 parts, second coupling agent 1-2 parts, leveling agent 0.5-0.8 parts, defoaming agent 0.3-0.5 parts, stabilizer 0.5-0.8 parts, first crosslinking agent 2-3 parts, methylsilane 1-2 parts, wax emulsion 1-2 parts, wetting agent 2-3 parts, preservative 0.1-0.5 parts and deionized water 15-20 parts;The hydrogel coated thermochromic material is acrylamide-based hydrogel coated thermochromic material.The anti-fake color-changing ink can simultaneously realize the promotion of anti-precipitation, high adhesion, scratch resistance, high-temperature aging resistance by the synergy of hydrogel coated thermochromic material and scratch-resistant additive.

This invention discloses a pre-cleaning device and a board printing equipment, belonging to the field of printing technology. It includes a frame, a conveying mechanism, a flipping frame, a first winding reel, a second winding reel, a support roller, and a radius sensor. The frame is equipped with an unwinding station, a rewinding station, and a conveying mechanism; the support roller is height-adjustable. The first and second winding reels are mounted on the flipping frame. The wiping cloth is drawn from the unwinding station and wound around the support roller, with the first side facing down to clean the board. The radius sensor detects the rewinding radius in real time. When a set threshold is reached, the support roller rises, the flipping frame rotates 180° to complete the station switch, and then the support roller descends, so that the second side of the wiping cloth faces down to clean the board. By switching the reel station through the flipping frame and coordinating with the height adjustment of the support roller, the wiping cloth can be used on both sides, reducing consumable costs. Double-sided use reduces the frequency of wiping cloth replacement, shortens equipment downtime, and ensures continuous conveying and cleaning, thereby improving board printing efficiency and production continuity.

The application belongs to the technical field of 3D printing, and particularly relates to a photosensitive resin additive 3D printer, which comprises a machine body, a top cover fixedly installed on the top of the machine body, a laser emission structure installed on the inner side of the top cover, a forming box fixedly installed on the inner wall of the machine body, a support slidably installed on the inner wall of the forming box, a plurality of support plates and support columns arranged on the inner side of the support, the support plates and the support columns being arranged in a cross manner, the highest point of the support plate being higher than that of the support column, and torsion spring shafts fixedly installed on the inner walls of the support plates. After model construction is completed, the lifting assembly pushes the support to drive the support plate and the support column to move upwards, the support plate is in contact with the extrusion assembly and then rotates downwards around the torsion spring shaft, the model is changed from being supported by the support plate to being supported by the support column, and the automatic separation of the support plate and the model is realized, manual stripping of the model by using tools is not needed, the workload and time of manual operation are greatly reduced, and the production efficiency is improved.

The utility model discloses a food printer product conveying line which comprises a plurality of independent spray head units, the spray head units are sequentially arranged in the length direction of a conveying belt, and spray heads in the spray head units are distributed at different positions in the width direction of the conveying belt. And food printing is carried out on the products in the corresponding columns on the conveying belt. According to the utility model, the plurality of independent spray head units are arranged to independently print corresponding columns of products on the conveyor belt, the spray head units do not interfere with each other, normal work of other units is not influenced when a single spray head is maintained, the continuity of a food printing process is guaranteed, and the printing efficiency is effectively improved.

The utility model relates to a photogravure press, in particular to an ink filtering and deslagging structure of the photogravure press, which comprises a filter residue cylinder, a filtering and foaming cylinder, filtering structures and mounting structures, the filtering structures are arranged in the filter residue cylinder and the filtering and foaming cylinder, and the mounting structures are fixedly arranged in the filter residue cylinder and the filtering and foaming cylinder. The filtering structure comprises a first filter element, a first liquid discharging guide pipe, a multi-layer filter residue inner core and a sealing sleeve, the first filter element is fixedly arranged in the filter residue barrel, the multi-layer filter residue inner core is arranged in the first filter element, and the sealing sleeve is fixedly arranged on the portion, located on the outer side of the multi-layer filter residue inner core, of the first filter element in a sealed mode. The printing ink filtering device is reasonable in structure, printing ink can be efficiently filtered in a residue filtering and bubble filtering mode, ink residues, impurities and bubbles contained in the printing ink are removed, and therefore the printing efficiency is improved.

The utility model discloses a vertical board printing device which comprises a base station, a lifting adjusting stand column is fixedly arranged on the base station, an upper end installation plate and a lower end installation plate are fixedly arranged at the upper end and the lower end of the lifting adjusting stand column respectively, and a lifting guide rail is fixedly arranged between the upper end installation plate and the lower end installation plate. A lifting sliding block is arranged on the lifting guide rail in a sliding mode, a lifting adjusting air cylinder piece is fixedly arranged on the upper end mounting plate, and a working shaft of the lifting adjusting air cylinder penetrates through the upper end mounting plate and is fixedly connected with a connecting rod between the upper end mounting plate and the lifting sliding block. According to the vertical card printing device, the lifting adjusting air cylinder, the steering adjusting module, the double-head clamping jaw air cylinder and the auxiliary clamping assembly are integrated, full-automatic accurate overturning and positioning of the acrylic vertical cards in the double-face printing process are achieved, the printing efficiency is remarkably improved, the problem of positioning deviation caused by manual overturning is solved, and the printing quality is improved. And meanwhile, the adjustable design can adapt to stable clamping of vertical cards of different sizes, and the alignment precision and quality consistency of double-sided printing are ensured.

The application provides a temperature control method, a 3D printing device and a readable storage medium, and relates to the field of 3D printing. The method comprises the following steps: receiving a printing instruction; and in response to the printing instruction, controlling the heating temperature of a backup hot end according to a preset temperature.

The application relates to a ceramic multi-material continuous forming light-curing additive manufacturing equipment and a process control method thereof. The application is applied to additive manufacturing of multi-material heterogeneous and complex-shaped ceramic components. The ceramic multi-material continuous forming light-curing additive manufacturing equipment comprises a vibration isolation table, a release film conveying module, a multi-material feeding module, a substrate rotating module and a DLP light machine projection displacement module, and each module is installed on the upper surface of the vibration isolation table; the vibration isolation table is a mounting base of the whole equipment and is used for reducing the influence of external vibration on printing precision; the release film conveying module is used for conveying paste and residual paste after curing; the multi-material feeding module is used for feeding different ceramic pastes and realizing material feeding switching; the substrate rotating module is used for bonding and curing ceramic blanks, realizing multi-layer printing and substrate cleaning during material replacement; and the DLP light machine projection displacement module is used for projecting slice patterns to cure the paste and realizing large-format splicing forming.

The utility model discloses a screen printing mechanism capable of realizing self-replacement of a screen, which comprises a pneumatic rod fixedly mounted at the output end of a cylinder, a rack fixedly mounted at one end, far away from the cylinder, of the pneumatic rod, a gear arranged on the side wall of the rack, a triangular block fixedly mounted in the gear, and a wedge-shaped block slidably mounted on the side wall of the triangular block. Springs are fixedly mounted on the side walls of the wedge-shaped blocks, discs are fixedly mounted at the ends, away from the wedge-shaped blocks, of the springs, connecting columns are fixedly mounted in the discs, cross-shaped connecting plates are fixedly mounted on the side walls of the connecting columns, and printing screens are fixedly mounted on the side walls of the cross-shaped connecting plates. And automatic replacement of the printing screen is realized. When the rack moves from back to front, the rack can drive the printing screen plate to do anticlockwise circular motion to be replaced, the replacement time is greatly saved, the printing efficiency is improved, meanwhile, the flexibility of equipment for coping with diversified printing tasks is enhanced, and the printing screen plates with different patterns or specifications can be rapidly switched.

The invention discloses a printing device with a tablet computer and an optical camera and a visual camera, and relates to the technical field of printing equipment. Comprising a main frame, a platform plate assembly is installed on the upper surface of the main frame, a shell assembly is installed on the side faces of the periphery of the main frame, a computer control mechanism is installed at the position, close to the right side, of the front side face of the shell assembly, and an ink supply box assembly is installed at the position, close to the rear side, of the left side face of the shell assembly; a cross beam mechanism is installed on the upper surface of the driving mechanism, a printing mechanism is installed on the cross beam mechanism, and a camera mechanism is installed on the right side face of the printing mechanism. According to the invention, a printed object is scanned through the camera mechanism, the printed object can be randomly placed on the platform plate assembly, a mold does not need to be manufactured, the placing time is saved, the printing efficiency is greatly improved, the focal length of the camera mechanism is adjustable, the scanning is more accurate, the printed object can be accurately printed, the printing precision is higher, and the printing quality is better.

The utility model discloses a shifting device applied to a printing platform in a 3D (three-dimensional) printer, which comprises a fixing part for surrounding and positioning a plurality of stacked printing platforms, and a push rod component driven by a motor to reciprocate along a lead screw, the push rod assembly comprises a structural frame used for being connected with the lead screw in a threaded mode, two installation bases perpendicular to the structural frame are symmetrically arranged on the two sides of the structural frame towards the fixing piece, and each installation base is provided with a non-return piece which rotates relative to the installation base to stretch out and draw back. An auxiliary supporting slow descending assembly rotating relative to the mounting seat is mounted in the middle of the mounting seat in a penetrating manner; the motor drives the push rod assembly to reciprocate, and the telescopic non-return mechanism is matched with the supporting slow descending assembly to effectively achieve continuous feeding of the printing platform.

The application discloses an extrusion device, a 3D printer and a method for using the extrusion device. The extrusion device can include a housing, a material channel, a discharge port in communication with the material channel, a push port in communication with the material channel, and a plurality of feeding ports in communication with the material channel. Along the length direction of the material channel, the discharge port is located at one end of the material channel, the push port is located at the other end of the material channel, and each feeding port is located between the discharge port and the push port. The extrusion assembly is slidably connected with the housing, so as to be capable of moving in the material channel from the side where the push port is located towards the discharge port, thereby pushing the material in the material channel out of the discharge port and blocking each feeding port. This design solves the problem of mixing of two materials when switching materials.

This utility model relates to the technical field of printer hot-end related technologies, and particularly to a heating and heat dissipation structure for an FDM printer printhead. It includes a printhead frame, with a heat dissipation frame fixedly connected to the left side of the frame, and a throat assembly inserted into the upper surface of the heat dissipation frame. This FDM printer printhead heating and heat dissipation structure, through the throat assembly, allows for rapid extrusion of molten material adhering to the inner wall of the lower throat by using a servo motor to drive a threaded rod to rotate, thereby causing an arc-shaped slide plate and connecting plate to drive the extrusion cylinder downwards. This eliminates the need for manual removal, cleaning, and reloading of the throat on the hot end after stopping the printer, improving the efficiency of handling blockages and thus increasing printing efficiency. Furthermore, during short-duration printing, the cooperation of the heat dissipation fins, cooling fan, and heat dissipation cavity within the heat dissipation frame minimizes the impact of the heating device on the throat assembly, ensuring normal printing during short periods.

This invention discloses a high-efficiency pad printing device, comprising a pad printing device body, a pad printing head assembly, a feeding assembly, and an ink assembly. The pad printing head assembly, feeding assembly, and ink assembly are all mounted on the pad printing device body. A flipping assembly is mounted on the pad printing device body, comprising a fixed block, a third push rod motor, a second drive motor, a gear set, and a flipping rod. With the pad printing device body consisting of a base, a column, and a mounting plate connected to each other, the fixed block is slidably mounted on the mounting plate. The third push rod motor is mounted on the mounting plate and connected to the fixed block to provide driving force for the sliding of the fixed block. The second drive motor is mounted on the fixed block, and the flipping rod is connected to the second drive motor via the gear set, enabling the flipping rod to perform a oscillating motion around its end. By incorporating the flipping assembly, this application can automatically flip garments, enabling batch printing of labels, significantly improving the continuity of label printing, and increasing printing efficiency.

The utility model discloses a conveying connection mechanism and automatic printing equipment, the conveying connection mechanism comprises a first module, a second module, a pushing assembly and a receiving assembly, the first module is provided with a first conveying assembly for conveying certificates; the second module and the first module are arranged adjacently, and the second module is provided with a second conveying assembly for conveying certificates; the pushing assembly comprises a fixing frame, a pushing plate and a first driving part, the fixing frame is fixedly connected to the first module, the pushing plate is slidably connected to the fixing frame, and the first driving part is used for driving the pushing plate to slide so that the certificates can move in the direction close to the second module; the receiving assembly comprises a second driving part, a driving wheel and a driven wheel, the driving wheel and the driven wheel are arranged at the input end of the second module, the second driving part is used for driving the driving wheel to rotate, and the driving wheel and the driven wheel are matched to convey certificates. According to the conveying connection mechanism, the conveying continuity can be improved, and the printing efficiency is improved.

This invention relates to the field of dental 3D printing technology, specifically a sub-pixel edge refinement and adaptive slicing method for dental 3D printing. The method includes: calculating the curvature features of a dental 3D mesh model and generating a curvature image; achieving adaptive layer thickness allocation based on surface complexity through dual-threshold segmentation and dynamic programming smoothing; obtaining the initial slicing boundary using inverse ray tracing; performing sub-pixel-level boundary search using the Breaking Ball algorithm; and outputting a high-precision contour through multi-scale, coarse-to-fine refinement; establishing a light source radiation field model and implementing three layers of grayscale compensation: global compensation, extreme value compensation, and edge protection filtering; constructing a multi-objective optimization model; using a non-dominated sorting genetic algorithm to search for the Pareto optimal solution set; selecting the optimal layer thickness sequence based on user weights; and generating G-code printing instructions. This invention achieves synergistic optimization of accuracy, efficiency, and material conservation.