205results about How to "Improve printing accuracy" patented technology

The invention provides a flow monitoring method and device for a 3D printing extruder, and relates to the technical field of additive manufacturing, and the method comprises the steps that material flow data are collected in real time through a multi-dimensional sensor array installed in the 3D printing extruder; transmitting the collected real-time flow data to a control system, and judging whether the material flow is within a preset range or not; according to the deviation between the flow data monitored in real time and the target flow, working parameters of the extruder are automatically adjusted, and adjustment is conducted through a closed-loop feedback control system till the flow is stable; and in the extrusion process, if flow data monitored in real time exceeds a normal working range, an abnormal alarm is triggered, and a corresponding fault processing program is started. The material flow can be accurately monitored in real time, and the working parameters of the extruder can be automatically adjusted according to the monitoring result, so that the stable supply of the material and the quality of the printing process are ensured.

The invention discloses binder spraying 3D printing equipment and a printing method for low-fluidity powder, and relates to the technical field of 3D printing. The printing method comprises the steps that the powder forming module is controlled to reach an initial position; the powder forming module comprises a powder falling module and a powder spreading module which move synchronously; powder is added into the powder falling module through the powder supplementing module; the powder forming module is moved to the initial powder laying position, and powder is controlled to be scattered on a vibration plate from a powder supplementing bearing plate of the powder falling module; vibration of a vibration plate is controlled, so that the powder is transferred to the front of the powder spreading module and is spread and compacted; laying of single-layer powder is completed; the steps are repeated to complete laying of the bottom powder layer; and laying of the slice layers is completed repeatedly on the bottom powder layer, the ink jetting module is controlled to move along with the powder forming module, a binder is jetted to each slice layer, and a 3D printing product is obtained through curing. A matching scheme of layer-by-layer powder supply, independent powder spreading and independent compaction is adopted, so that high density and high uniformity of a low-fluidity powder printing breadth are ensured.

The invention provides an intelligent photocuring 3D printing model optimization method, and relates to the technical field of photocuring 3D printing, and the method comprises the following steps: obtaining a 3D printing model file uploaded by a user; analyzing geometric information in the model file, and extracting a triangular grid structure, normal vector information and a surface area; key feature areas of curved surfaces, corners and edges in the model are identified, printing parameter data are collected, and a target model summary file is generated; an optimization printing target is defined, an optimization model is generated based on the generative adversarial network, model quality is evaluated through a discriminator network, a multi-target optimization result is analyzed, and an optimal balance point among different targets is found; and testing the optimized model and the printing parameters by using virtual reality, and performing self-adaptive correction according to a simulation test result to adjust to the optimal printing parameters. According to the method, the geometric features and the material attributes of the 3D model are automatically analyzed, potential weaknesses in the model are identified, and the 3D printing model is intelligently optimized.

The invention discloses a technological method for forming an aluminum alloy shell through selective laser melting. The technological method comprises the steps that S1, model treatment is conducted; s2, supporting design; s3, carrying out analog simulation; s4, selective laser melting forming; s5, post-processing is carried out; s6, quality detection; according to the method, process simulation analysis is carried out on the additive manufacturing process risk, thermal-structure coupling field simulation calculation is carried out on a component, and deformation, temperature and stress distribution of all stages such as printing, substrate cutting and support removal are analyzed; time and economic cost can be saved, and the method can also be used for exploring process parameters and formulating an optimal process scheme; by means of the reversible deformation compensation technology, the printing problem is effectively reduced, the printing precision is improved, and when the part size precision requirement is high, the technology can assist printing and accurate forming; the method disclosed by the invention can be popularized and applied to other parts formed by selective laser melting, and has wide social benefits and economic benefits.

The invention provides a complex curved surface-oriented array structure silk-screen printing device and a control method thereof, and belongs to the technical field of advanced manufacturing. The printing device comprises a bed body module, a movement module, a silk-screen printing module and a control module, the posture position of a workpiece can be adjusted in the printing process, and the bed body module has five degrees of freedom and can adjust the posture of the workpiece in any curved surface shape. In the silk-screen printing process, the control module executes a professional numerical control G code program generated through path planning software, and the accuracy of the printing position can be guaranteed. The silk-screen printing equipment part moves a silk-screen printing module to a designated position to start printing on the basis of five-axis movement. Multi-material, high-precision, high-efficiency and damage-free manufacturing of the array structure can be realized, and the method has the characteristics of full-process automation, high forming speed, high efficiency and the like of silk-screen printing manufacturing, and has a good application prospect in the fields of precision machining, micro-nano machining and the like.

The utility model provides printing equipment. The printing equipment comprises a rack, a first nozzle mechanism and a second nozzle mechanism, a second nozzle mechanism; the extrusion mechanism comprises a first driving assembly, and a first extrusion assembly and a second extrusion assembly which are in transmission connection with the first driving assembly; the lifting mechanism is connected with the second nozzle mechanism, the printing equipment comprises a first working state in which the first nozzle mechanism works and a second working state in which the second nozzle mechanism works, and the lifting mechanism is used for driving the second nozzle mechanism to move relative to the first nozzle mechanism; therefore, the printing equipment can be switched between the first working state and the second working state. The first driving assembly is used for driving the first extrusion assembly to convey consumables to the first nozzle mechanism in a first working state and driving the second extrusion assembly to convey consumables to the second nozzle mechanism in a second working state; the printing equipment can be switched between the first working state and the second working state by driving the second nozzle mechanism to move, and the printing precision is high.

The invention provides a photocuring 3D printing intelligent slicing optimization method based on artificial intelligence, and relates to the technical field of photocuring 3D printing.The method comprises the steps that a target model summary file is generated by collecting a 3D printing model file and printing parameter data; performing slicing processing on model data in the target model summary file to generate model slicing data; analyzing the geometric complexity of the model by using a deep convolutional neural network, and dynamically adjusting the thickness of a slice layer based on a complexity coefficient; through multi-objective optimization of printing quality, time and material consumption, printing setting is dynamically adjusted according to an optimization result; and the printing state is monitored in real time, slice parameters are adjusted according to monitoring data, an optimization result is verified before actual printing, and slices are adjusted and optimized according to a verification result. The 3D printing model file and the printing parameter data input by the user can be automatically analyzed, the printing process is monitored in real time, the slicing parameters are dynamically adjusted, and the printing quality and efficiency are improved.

The utility model relates to the field of 3D printing, in particular to a movement device and a 3D printer, and the movement device comprises a first transmission belt extending in the first direction; a second transmission belt extending in the first direction; the third transmission belt extends in the second direction perpendicular to the first direction, the first end of the third transmission belt is in transmission connection with the first transmission belt, and the second end of the third transmission belt is in transmission connection with the second transmission belt; the output assembly is fixed on the third transmission belt; the third transmission belt is configured to drive the output assembly to move in the second direction under the condition that the first transmission belt and the second transmission belt rotate in the same direction; under the condition that the first transmission belt and the second transmission belt rotate reversely, the third transmission belt drives the output assembly to move in the first direction. The problem that the transmission belt is loosened after being used for a long time can be solved, the movement precision of the output assembly is improved, and therefore the printing precision and the model quality are improved.

The invention discloses a screening method for 3D printing powder. The screening method comprises the following steps that powder needing to be screened is prepared; s2, performing screening modes of different levels according to the powder attribute information of the powder: primary screening of the powder; powder is subjected to multi-stage screening; screening fine powder; the screening process is monitored, an alarm detection mechanism is installed, and whether blockage occurs in the screening process or not is judged according to the screening result; different grades of screening modes are carried out by detecting powder attribute information of powder, the alarm mechanism is arranged, whether blockage occurs in the screening process or not is judged according to the screening result, the alarm detection mechanism can be based on the weight of falling materials, when the weight of discharged materials reaches a certain pressure value, it is indicated that work is normal, and the working efficiency is improved. And if the pressure is lower than a normal numerical value, the blanking amount is small, blockage is caused, the blockage and accumulation phenomena of particle materials on the screen are effectively prevented, the continuity and the stability of the screening process are ensured, and the printing quality and the printing consistency are improved.

The invention discloses a full-automatic silk-screen printing production line for narrow sheets, particularly relates to the field of printing equipment, and comprises a narrow sheet printing machine, a sheet arranging conveyor, a drying machine box and an air cooling machine. The narrow sheet printing machine is formed by combining a feeding rack, a screen clamping part, a printing large arm part, a printing machine head part, a screen lifting frame part, a conveying part, a table top part and an operation panel, the feeding rack is installed at the front end of the sheet arranging conveying machine, and the drying machine box is installed on one side of the sheet arranging conveying machine. The air cooling machine is installed on one side of the drying machine box, the table top part is provided with a table top bottom frame, the table top bottom frame is installed at the top end of the feeding rack, and three supporting table tops are movably installed at the top end of the table top bottom frame; according to the invention, manual adjustment of the screen printing plate for printing by a person with shallow experience is not needed, large errors are avoided, the method has the advantages of good stability and high accuracy, and meanwhile, the processing efficiency is improved.

The embodiment of the invention provides a nozzle calibration device and printing equipment, the nozzle calibration device comprises a position processing assembly, a probe assembly and a strain sensing assembly connected with the probe assembly, and the probe assembly is provided with a first detection surface, a second detection surface and a third detection surface which are perpendicular to one another; wherein the strain sensing assembly is used for generating corresponding deformation and outputting a signal when the spray head abuts against the first detection surface, the second detection surface or the third detection surface; the position processing assembly is used for receiving signals of the strain sensing assembly and calculating the relative position deviation between the at least two nozzles according to the received signals and the moving paths of the nozzles, and the relative position deviation is used for conducting position compensation calibration on at least one of the at least two nozzles.

The utility model relates to a transmission device and a 3D printer, and the transmission device comprises a first transmission belt which extends in the first direction and is provided with a first end and a second end which are located in the first direction, and the relative positions of the first end and the second end of the first transmission belt are fixed; the first tensioning assembly comprises a fixing seat and a pressing block connected to the fixing seat, the fixing seat is fixed to the first transmission belt, and the pressing block is configured to abut against the first transmission belt in the direction forming an included angle with the first direction so as to apply tensioning force to the first transmission belt. The first transmission belt can be effectively tensioned, and the printing precision and the model quality are improved.

The utility model relates to the technical field of printing, and discloses a pad printing silica gel head for digital jet printing and a pad printing system, the pad printing silica gel head for digital jet printing comprises a pad printing silica gel head, the bottom of the pad printing silica gel head is provided with a printing surface, and the interior of the pad printing silica gel head is provided with a cavity; the shaping mold is connected in the cavity and divides the cavity into an inner cavity and an outer cavity, and a shaping surface is arranged at the bottom of the shaping mold and is a plane or a flat arc surface; a first communicating hole for communicating the inner cavity with the outer cavity is formed in the shaping surface; the negative pressure structure is communicated with the inner cavity and is used for vacuumizing the cavity; the inflating structure is communicated with the inner cavity and is used for inflating the inner cavity; wherein the printing surface is provided with a shaping position which is adsorbed on the shaping surface when the negative pressure structure is vacuumized, and a separating position which is separated from the shaping surface when the inflating structure is inflated. According to the transfer printing silica gel head for digital jet printing, the printing surface is provided with the setting position and the separation position, the jet printing precision can be improved through the setting position, and a good printing effect can be obtained through the separation position.

The invention relates to a printing mechanism. The printing mechanism can comprise a printing module, a supporting plate and a printing driving module. The printing module comprises a rotating frame, and a fixing part is arranged on the rotating frame and used for fixing a material box; a pivot is arranged on the supporting plate; one end of the rotating frame is rotatably connected with the pivot; the printing driving module comprises a transmission assembly and a driving motor; the driving motor and the transmission assembly are both installed on the supporting plate. The driving motor is used for driving the transmission assembly so as to drive the rotating frame to reciprocate around the pivot. According to the technical scheme provided by the invention, the structure of the printing mechanism can become compact, the size of the printing mechanism is reduced, and meanwhile, the part complexity of the printing mechanism is avoided; and the rotating frame can be accurately controlled to swing around the pivot in a reciprocating mode, printing flexibility is improved, the printing position can be adjusted according to printing requirements, and printing efficiency is improved.

The invention provides a printing method which can be applied to the financial science and technology field and the big data technology field. The printing method comprises the steps that a first parameter and a second parameter in a printing request are obtained, the first parameter is used for indicating the file type of a to-be-printed file, and the second parameter is used for indicating multiple sets of printing data in the to-be-printed file; a printing template matched with the file category is obtained, at least one target position in the printing template is provided with a bookmark, the bookmark is used for indicating the field type corresponding to the target position, each bookmark is provided with at least one segmentation mark, and the segmentation marks are used for segmenting the corresponding bookmark into different components; according to the segmentation marks, analyzing each bookmark, and determining the field type of the target position corresponding to each bookmark; and inserting each group of printing data in the multiple groups of printing data into the corresponding target position according to the field type corresponding to each bookmark. The invention further provides a printing device, equipment, a storage medium and a program product.

The utility model discloses a 3D printer tray platform, which relates to the technical field of 3D printers and comprises a base, a bearing plate is detachably mounted at the top of the base, a fixing groove is formed in the top surface of the base, two rectangular frames are mounted at the bottom of the base in a penetrating manner, fans are mounted in the rectangular frames, and ventilation grooves communicated with the fixing groove are formed in the upper parts of the left side and the right side of the base. A plurality of electric heating tubes are installed on the inner side of the fixing groove at the bottom of the bearing plate, and a translation assembly used for driving the base to move is arranged below the base. The supporting plate is heated through the electric heating pipe, the adhesive force between a printing material on the bottom layer and the supporting plate can be improved, the printing precision and the success rate are improved, and thermal stress is effectively reduced, so that the risks of deformation and cracking are reduced, the quality of printed pieces is improved, circulation of air inside and outside the base can be accelerated by starting the fan, and the service life of the base is prolonged. Therefore, cooling of the contact face of the bearing plate and the printing piece is accelerated, cooling of the printing piece can be accelerated, and the piece taking efficiency is improved.

The invention discloses a novel 3D printing building robot and a control method thereof, and the building robot comprises a printing spray head device which is used for extruding concrete for printing; the transverse telescopic device is used for transversely stretching out and drawing back and driving the printing nozzle device to transversely move; the vertical telescopic device is arranged on the lower side of the transverse telescopic device and used for vertically stretching out and drawing back and driving the transverse telescopic device to vertically move. The rotating device is arranged on the lower side of the vertical telescopic device and used for driving the vertical telescopic device to rotate in the horizontal plane. According to the design, through the transverse telescopic mechanism and the vertical telescopic mechanism, contraction and extension of the overall structure can be achieved, the overall structure is small after contraction, the foundation height is low, overall machine hoisting and turnover transportation are facilitated, and in-situ printing can be conducted without disassembly and assembly; after the robot is stretched, the working space is large, a single machine can print a building or a component product with a large area, and multiple machines can cooperate to print a building with a larger area; by adopting light materials and optimal design, the whole machine is light in weight and can be placed on a floor for high-rise building printing.

The invention discloses a double-head carbon fiber printing device and a printing method, and belongs to the technical field of 3D printing, the double-head carbon fiber printing device comprises a rack, a working rotary table is fixedly mounted on the rack, two Y-axis sliding rail mechanisms are symmetrically arranged on the two sides of the working rotary table, an X-axis sliding rail mechanism is slidably connected between the two Y-axis sliding rail mechanisms, and two Z-axis sliding rail mechanisms are oppositely arranged on the two sides of the X-axis sliding rail mechanism; the two Z-axis sliding rail mechanisms are synchronously arranged on the X-axis sliding rail mechanism in a sliding mode, one Z-axis sliding rail mechanism is provided with the ultrasonic printing head, the other Z-axis sliding rail mechanism is connected with the laser printing head through the swing mechanism, the double-head design is adopted, the ultrasonic printing head and the laser printing head are integrated, parallel printing of multiple materials can be achieved, and the printing efficiency is improved. Compared with the prior art, carbon fibers and other base materials can be printed synchronously, flexible switching of multiple materials and multiple processes is achieved, the printing efficiency and precision are remarkably improved, meanwhile, switching of a single printing head does not need to be conducted frequently, path planning is more reasonable, and material waste is avoided.

The invention relates to a special-shaped retaining wall printing method and device and a special-shaped box dam printing method and device.The special-shaped retaining wall printing method comprises the steps that a three-dimensional space model of a special-shaped retaining wall is obtained, layering treatment is conducted on the three-dimensional space model in the vertical direction, so that a plurality of retaining layers which are sequentially stacked from bottom to top are obtained; obtaining floor height information corresponding to each fence layer; the corresponding fence routes of all the fence layers in the horizontal direction are obtained, and the fence routes of at least one pair of adjacent fence layers in the multiple fence layers sequentially stacked from bottom to top in the horizontal direction have deviation; and based on the layer height information corresponding to all the fence layers and the fence routes corresponding to all the fence layers, the multiple fence layers are printed on the printing face from bottom to top in sequence through a printing head in a stacking mode so as to print the special-shaped fence wall, and in the process of printing the special-shaped fence wall, the printing speed of the special-shaped fence wall is increased, and the printing speed of the special-shaped fence wall is increased. There is no step of angle adjustment of the printing surface in the pitch angle direction and the roll angle direction.

The invention relates to a printing mechanism, a printing system and imaging equipment. The printing mechanism can comprise a printing module and a printing driving module. The printing module comprises a rotating frame, and an ink jet structure is arranged on the rotating frame; the printing driving module comprises a pivot and a printing driving device; the printing driving device is used for driving the rotating frame to rotate and swing around the pivot; and the printing module is used for performing ink-jet printing when the rotating frame rotates and swings. According to the technical scheme provided by the invention, the structure of the printing mechanism can become compact, the size of the printing mechanism is reduced, and meanwhile, the part complexity of the printing mechanism is avoided; and the rotating frame can be accurately controlled to swing around the pivot in a reciprocating mode, printing flexibility is improved, the printing position can be adjusted according to printing requirements, and printing efficiency is improved.

The invention relates to a sliding mechanism and a 3D printer, and the sliding mechanism comprises a sliding rail which extends along a first direction; the sliding frame assembly comprises a sliding block, a first pulley and a second pulley, the first pulley and the second pulley are rotatably connected to the sliding block, the sliding block is slidably connected into the sliding rail, and the first pulley, the sliding rail and the second pulley abut against the sliding rail in a sliding mode; wherein the slider is configured to receive a driving force from the outside of the sliding mechanism; when the sliding block receives driving force, the first pulley and the second pulley slide along with the sliding block relative to the sliding rail in the first direction. The problems that a model formed through printing is obvious in layer grain and poor in surface glossiness and the problem that model printing fails are solved, and the product quality and the printing precision are improved.

The invention provides a dual-curable polyoxazolidinone prepolymer and a resin composition for 3D printing, and particularly relates to the technical field of 3D printing materials. The dual-curable polyoxazolidinone prepolymer is prepared by the following steps: carrying out first reaction on dihydric alcohol and diisocyanate to generate an isocyanate-terminated polyurethane prepolymer; carrying out second reaction on the polyoxazolidinone and epoxy resin to generate polyoxazolidinone with isocyanate at two ends; and finally, carrying out third reaction on the polyoxazolidinone and a sealing agent to obtain the dual-cured polyoxazolidinone prepolymer. And the sealing agent is an aminomethacrylate compound. The polyoxazolidinone prepolymer provided by the invention provides excellent toughness through a polyurethane part synthesized by dihydric alcohol, and photo-thermal dual curing is realized through metacrylic acid ester end capping. The dual-curing mode not only improves the crosslinking density and uniformity, but also significantly enhances the mechanical properties, including strength, toughness and durability, of the material, so that the material can be efficiently cured under illumination or heating conditions to form a uniform three-dimensional network structure.

This application belongs to the field of semiconductor processing technology, specifically relating to a backlight reflective layer printing device and its application. This application effectively controls the vibration generated during the printing process by optimizing the mechanical structure and position design of the frame, support plate device, and multi-axis spindle, reducing the deviation between the actual operating path and the planned path of the piezoelectric jet valve. This significantly improves the stability of the piezoelectric jet valve operation and the printing accuracy. Furthermore, this application, by setting up a micro-adjustment device, a positioning system, an inkjet calibration system, and a needle alignment device, and utilizing their coordinated relationship, can precisely correct printing parameters such as the jetting position or jetting volume of the piezoelectric jet valve. Therefore, based on the aforementioned stable printer body structure, the coating quality of the backlight reflective layer obtained by piezoelectric jet printing will be further improved. Thus, the backlight reflective layer prepared using this invention has better thickness uniformity and a better reflective effect.

The utility model provides a bottom supporting structure of a 3D printer. The bottom supporting structure comprises a base, a fence fixedly installed on the top face of the base, a supporting seat connected with a supporting plate through a spring, the supporting plate fixedly installed at the bottom of a heated plate, a glass platform arranged at the top of the heated plate, and a long screw connected with a stabilizing mechanism. The base is adopted as a bottom supporting structure of the 3D printer to support the printing device, meanwhile, the glass platforms with the intervals are installed on the heated plate to be used for bearing finished products, the heated plate can enable the glass platforms to be evenly heated, and the situation that the glass platforms are formed due to temperature difference changes is avoided; the horizontal supporting structure is ensured to improve the printing precision, the springs are arranged to achieve elastic supporting of the supporting structure, vibration generated when the printing device works cannot affect the supporting structure, control is achieved through the stabilizing mechanism according to the weight of a printed finished product, and a stabilizing rod abuts against the bottom of the heated plate to achieve further supporting. And the processing precision of the 3D printer is improved.

The invention relates to the technical field of digital printing, and discloses a digital printing machine jet printing process control method, which comprises the following steps of: controlling a cloth pressing roller to flatly and tightly attach a conveying belt to convey cloth in combination with obtained conveying parameters of the cloth to be printed; performing height positioning on the printing nozzle according to a height positioning method, wherein the height positioning method is that the printing nozzle is positioned by returning to the starting point each time; calculating the motion logic required to be executed by the printing nozzle on each axis according to the printing draft data; the printing nozzle is moved to a designated position, the working position of the printing nozzle is obtained in real time, and draft printing is executed; after the printing nozzle completes part of printing, the conveying belt pulls the cloth to a designated position according to a preset stroke to continue printing; and in response to completion of draft printing, controlling the printing nozzle to return to the standby position. The cloth pressing roller is controlled by combining conveying parameters to convey the cloth in a manner of flatly clinging to the conveying belt, so that the cloth is not easy to be too tight or too loose; the printing nozzle is positioned by combining a height positioning method without adding a feedback device, so that the cost is low.

The utility model belongs to the technical field of printing devices, and particularly relates to a transfer printing device which comprises a supporting device and a printing device. The product mounting device is arranged on the supporting device; the screen printing device is arranged on one side of the supporting device; the transfer printing device is movably arranged between the screen printing device and the product mounting device and is provided with a screen printing platform; and the elastic transfer printing film assembly is arranged on the silk-screen printing platform. By the adoption of the transfer printing equipment, a pattern can be printed on the elastic transfer printing film assembly, then the elastic transfer printing film assembly is transferred through the transfer printing device, an elastic transfer printing film is fully attached to a product to be printed, the pattern to be printed is transferred to the product to be printed, and the transfer printing equipment is more accurate in printing of special-shaped products or large-curved-surface products; and the printing consistency is better.

The present invention proposes a PCB board inkjet printer and a PCB board inkjet production line, including an inkjet system, a horizontal conveyor belt for conveying PCB boards, and a liftable workbench; when the PCB board is fed, the liftable workbench is located below the horizontal conveyor belt; when the PCB board follows the horizontal conveyor belt to move above the liftable workbench, the liftable workbench lifts the PCB board to be lifted off the horizontal conveyor belt, and fixes the PCB board on the liftable workbench; the inkjet system prints the PCB board; after the printing is completed, the liftable workbench descends, and the PCB board falls to the horizontal conveyor belt and continues to be conveyed following the horizontal conveyor belt. The present invention realizes the automated assembly line production of PCB board printing by transmitting the PCB board on the horizontal conveyor belt and printing on the liftable workbench, with high production efficiency; high positioning accuracy, avoiding the positioning error caused by the use of a manipulator and a truss structure in the prior art; four CCD cameras are used to compensate for graphic deformation, size and shape errors, further improving the accuracy of positioning printing.

The utility model relates to the technical field of reflection sheet feeding, especially a deviation-correcting automatic feeding system for reflection sheet printing, comprising a supporting rail, the upper surface of the supporting rail is slidably connected with an anti-deviation bearing assembly, and the side of the supporting rail is slidably connected with a docking mechanism; the anti-deviation bearing assembly comprises a bearing table, the upper surface of the bearing table is fixedly connected with two bearing seats, the two bearing seats are fixedly connected with a bearing rod, the outer side of the bearing rod is slidably connected with a connecting seat, the two ends of the connecting seat are fixedly connected with buffer springs, the buffer springs are sleeved on the outside of the bearing rod, the top end of the connecting seat is fixedly connected with a deviation-correcting table, the center of the deviation-correcting table is elastically connected with a deviation-correcting rod, and the front end of the deviation-correcting rod is fixedly connected with an S-pole magnetic block; in the utility model, the problem of shaking during the feeding of light and thin reflection sheets is effectively solved, the accurate positioning of reflection sheets is ensured, the compatibility of equipment is improved, the overall design significantly improves the printing precision and efficiency, and the scrap rate is reduced.

The utility model discloses a slider connecting piece, drive stand and 3D printer to solve the technical problem of inconvenient installation and insufficient stability of the existing 3D printer slider connecting piece. The utility model discloses a bottom plate, mounting block, clamping post, the mounting block includes setting in the side surface of bottom plate, first mounting block for with slider fixed connection, the clamping post includes setting on the bottom plate and the first stand and second stand of up and down arrangement, and there is the clamping gap between first stand and second stand, and the position of first stand faces the clamping gap and is provided with first pawl, and the position of second stand faces the clamping gap and is provided with second pawl, first installation groove is formed between the clamping post and first mounting block, and the head and tail of toothed transmission belt all pass through the clamping gap. The utility model has the advantages of convenient installation and strong stability.

The invention discloses a printing path optimization method based on selective laser melting. Obtaining a three-dimensional model of the workpiece, and performing slicing operation on the three-dimensional model to obtain a slicing file; generating a filling path according to the graph contour of each layer in the slice file, performing complexity judgment on each layer of filling path by taking the number of inflection points in the filling path as a criterion, and determining a filling mode of the current filling path based on a judgment result; storing the filling paths and the corresponding filling modes in brother nodes of the balanced binary tree; performing path optimization on the printing sequence of each layer of graph contour by using an improved ant colony algorithm; and traversing the balanced binary tree to obtain a filling path, and printing the workpiece in combination with the contour path. According to the invention, the scanning path of the laser is optimized, so that the manufacturing efficiency and the printing quality of selective laser melting are improved.