90 results about "Overprinting" patented technology

The invention provides a nameplate printing defect detection method and system based on image segmentation. The method comprises the following steps: acquiring a nameplate surface image and carrying out distortion correction and brightness homogenization preprocessing; generating a pixel-level segmentation mask by using the semantic segmentation network; template registration is carried out based on the segmentation result, and a deformation field vector and a registration difference chart are calculated; performing defect area extraction and type identification on the difference image; according to the method, deep learning semantic segmentation is adopted to realize pixel-level analysis of a nameplate printing area, deformation field registration is combined to accurately quantify overprinting offset, defect quantitative evaluation is realized through multi-dimensional scoring, the detection rate reaches 99% or above, and the detection time of a single piece is less than 0.5 second.

The invention belongs to the technical field of ceramic decorative materials and photochromism, and provides a photochromic dynamic pattern design method for multilayer overprinting partition photosensitive ceramic stained paper aiming at the industrial pain points that patterns of traditional ceramic stained paper are fixed, and existing photochromic stained paper is low in overprinting precision, slow in color change response and the like. According to the method, a five-layer composite structure is constructed and sequentially comprises a ceramic substrate layer, a bottom bonding layer, a photochromic functional layer, a partitioned photosensitive control layer and a surface protection layer, multi-region independent photochromism is achieved through the partitioned photosensitive control technology, and the overprinting precision can reach within 5 microns. The photochromic response time of the product does not exceed 0.5 second, the cycle discoloration life is not less than 150 thousand times, the interlayer peeling strength reaches 3N / cm or above, the product can be widely applied to the field of architectural ceramic and domestic ceramic decoration, and the visual expressive force and interactive experience of the product are effectively improved.

The utility model discloses a three-stage tension control unreeling device for an easy-to-deform printing material, which relates to the field of printing machinery and comprises an unreeling device, and a first-stage printing material tension disturbance absorption regulation and control device, a second-stage printing material tension disturbance absorption regulation and control device and a third-stage printing material tension regulation and control device are arranged on a printing material output channel. The third-stage printing material tension regulation and control device comprises a pair of conveying roller sets and a guide roller, a tension sensor is installed on the guide roller, a first fixed guide roller and a second fixed guide roller are arranged in front of and behind the guide roller respectively, a driving roller is driven by a motor controlled by a frequency converter, and the output end of the tension sensor is connected to the input end of the frequency converter; the device is provided with three stages of regulation and control devices, stretching is carried out through the first-stage regulation and control device, shaping is carried out through the second-stage regulation and control device, accurate adjustment is carried out through the third-stage regulation and control device, it is guaranteed that the deformation of a printing material in the subsequent process is minimum, tension is stable, and finally overprinting is accurate when the printing material prone to deformation is printed in the printing unit; and multi-color overprinting high-quality printing can be completed.

The invention discloses an overprinting device and method for flexible packaging in the technical field of printing, and aims to solve the problems that in the prior art, due to the fact that a flexible packaging plate is printed firstly and then subjected to auxiliary processing, product overprinting is inaccurate, and the process is tedious. The device comprises a conveying line, a plurality of registration printing assemblies are arranged on the conveying line, each registration printing assembly comprises a support and a printing roller rotationally arranged on the support, the support is further provided with a first driving assembly used for driving the printing roller to rotate, and the printing roller is provided with an ink printing area and a mark stamping area. Each support is provided with an ink supply assembly, and the ink supply assemblies are used for supplying ink to an ink printing area. The method is used for achieving efficient printing of the packaging product and manufacturing of the anti-fake technology, optimization of the packaging product technology can be achieved without adopting extra complex equipment, the overprinting accuracy of the auxiliary technology can be effectively guaranteed, and therefore the product yield can be effectively increased.

The utility model relates to the technical field of printing machinery, in particular to a multi-face turnover seal which comprises a base. The shell is arranged on the base in a sliding mode, and the shell can slide relative to the base in the vertical direction; the spring is arranged between the base and the shell and is used for providing reset elastic force; the sensor is arranged on the shell and is used for detecting the position of the shell relative to the base; the multi-face seal penetrates through the base and is rotationally arranged in the shell; and the multi-surface seal can be automatically overturned to another seal surface after the seal operation is completed by pressing the shell. The inconvenience of frequently replacing stamps or carrying a plurality of stamps is avoided, and the office and operation efficiency is greatly improved. The seal template is ensured to be accurately positioned after being overturned each time, so that high-precision and high-efficiency automatic overprinting is realized.

This invention discloses a method for preparing printing ink for smooth, hard food surfaces, comprising the following steps: preparing a mixed solution of plant protein; mixing it with shellac in anhydrous ethanol, then adding polyol and pigment for dispersion, followed by grinding and filtration to obtain the final product. This invention enables gravure printing on the hard, smooth surfaces of food, exhibiting good adhesion, excellent ink transfer properties, clear and smooth printing, and a certain degree of water resistance. Furthermore, it controls the ink drying speed; black and white inks dry at a moderate speed to avoid cracking and peeling; color inks dry at a moderate speed to avoid clumping. It also allows for overprinting of two or more colors, and the ink has good abrasion resistance, preventing color fading during transportation after packaging.

The application provides a kind of carbon fiber mandrel main leaded soft plate overprint process, belong to soft plate printing technical field. Symmetrical, even arrangement each mandrel around center impression cylinder, start the air supply and exhaust unit of mandrel, anilox roll is sleeved on mandrel, close air supply and exhaust unit, anilox roll contracts and tightly and in mandrel. Wrap the printing material on the center impression cylinder, start the closed double doctor inking system for anilox roll quantitative ink supply, and by servo motor control mandrel and anilox roll relative center impression cylinder front and back displacement. Start the drive unit of printing material, while the printing material rotates around the center impression cylinder, each mandrel drives corresponding anilox roll to approach the center impression cylinder, and complete impression and overprint under the preset printing pressure. After completing overprint, start the air supply and exhaust unit again to replace each anilox roll, enter the next cycle of soft plate overprint. The application can realize the accurate overprint of soft printing material.

The utility model relates to the technical field of overprinting machines, and discloses an overprinting fountain solution dosage control device which comprises a solution box, a control mechanism is fixedly connected to the surface of the solution box, and a sealing mechanism is arranged at the top of the solution box. The control mechanism comprises a control seat, the control seat is fixedly connected to the left side of the liquid tank, a limiting plate is arranged in the control seat, a circular ring is fixedly connected to the right end of the limiting plate, sliding blocks are fixedly connected to the four ends of the surface of the circular ring correspondingly, and a supporting ring frame is fixedly connected to the bottom end of the circular ring; the middle of the bottom of the supporting ring frame is fixedly connected with a conical plug block, and the top of the limiting plate is fixedly connected with a supporting strip. According to the overprinting fountain solution dosage control device, the circular ring can be driven to slide correspondingly under the limitation of the circular ring in the solution box, finally, the conical plug block is driven to slide up and down, the gap between the conical plug block and the bottom end in the solution box is changed, operation is quite convenient, and therefore the overprinting fountain solution dosage control effect is achieved.

This invention provides a method, apparatus, and coating machine for adaptive intercoating in secondary overprinting, relating to the field of lithium battery processing. The method includes: detecting the printing position during the secondary overprinting process using a color mark group; calculating the position deviation between the printing position and the target position; adjusting the phase of the gravure roller based on the position deviation; detecting the new printing position based on the phase-adjusted gravure roller; measuring the actual intercoating value based on the new printing position; comparing the actual intercoating value with the process setting value to obtain the secondary overprinting result; the secondary overprinting result is used to indicate whether the printing position is ahead or behind; and adjusting the speed of the gravure roller based on the secondary overprinting result to complete the secondary overprinting. This application improves the accuracy of intercoating in secondary overprinting by real-time correction of the gravure roller speed to match the material feed speed, forming a closed-loop adjustment.

The present invention provides a transfer film for holographic graphic printing, which has a layered structure consisting of a plastic base film layer [1], a release layer [2], and a transfer layer. The transfer layer is composed of transfer units arranged in a longitudinal and transverse manner. Each transfer unit contains a pattern used on a piece of board material for a package. The transfer layer has a holographic laser layer [4] and an aluminum plating layer [5]. The holographic laser layer has a laser effect pattern. The transfer layer also has a printed graphic layer [3]. The printed graphic layer has a blank space that is in a registration relationship with the laser effect pattern, and the registration deviation between the blank space and the laser effect pattern is ≤±10um. Since the release layer, printed graphic layer and holographic laser layer in the above-mentioned transfer layer are completed online in one go on the printing press, its high precision, integrated features and novelty, creativity and practicality have changed the defects of the existing iron printing process, such as multiple processes, difficulty in controlling the registration accuracy and high loss.

The invention discloses a laser transfer paper gravure cursor recognition system which comprises a transfer equipment body, a visual detection system and a central control system, and the transfer equipment body is sequentially provided with an unwinding unit, a plurality of transfer color cells and a winding unit in the paper feeding direction of a printing material. The visual detection system comprises at least one first visual detection device and a second visual detection device, and the first visual detection device is installed behind a transfer printing color group serving as a reference and used for capturing an original pattern on a printing material and a reference color pattern transferred by the reference color group in real time. The second visual inspection device is arranged behind the last transfer printing color group and in front of the winding unit and is used for detecting the overprinting precision and color quality of a final transfer printing finished product; the visual detection system is in signal connection with the central control system to form a closed-loop control loop; a storage module is arranged in the central control system and used for storing standard pattern data.

This invention discloses a fully automated screen printing method for labels based on CCD visual alignment, specifically including the following steps: material feeding control, substrate pretreatment, CCD visual alignment, dual CCD compensation printing, continuous alignment and overprinting, low-temperature curing, cooling, shaping and leveling, CCD visual final inspection, slitting and rewinding, and packaging output. This fully automated screen printing method for labels based on CCD visual alignment achieves precise alignment and real-time offset compensation between the screen and the substrate through dual CCD visual monitoring, improving overprinting accuracy. It employs ambient pressure low-temperature plasma pretreatment to enhance substrate adhesion, and three-stage low-temperature curing to prevent PET substrate deformation. Combined with full-width CCD final inspection to automatically remove defective products, this method achieves fully automated, high-precision, and high-stability label printing production, offering advantages such as precise alignment, uniform curing, strict quality control, and high production efficiency.

The invention relates to the technical field of gravure printing machinery, and discloses a rapid locking and accurate positioning device for a gravure printing machine plate roller, the rapid locking and accurate positioning device comprises a bottom plate and a printing roller body, a mounting rod is arranged on the inner wall of the printing roller body, a second locking mechanism is arranged on one side of the upper part of the bottom plate, and a bearing seat is fixedly connected to the other side of the upper part of the bottom plate; a first locking mechanism is arranged in the bearing seat, a second locking mechanism is arranged in the bearing seat, the first locking mechanism comprises an outer sleeve, the outer wall of the outer sleeve is arranged on the inner wall of the bearing seat, a first bearing sleeves the outer wall of the outer sleeve, a vertical sliding groove is formed in the inner wall of the outer sleeve, and a pressed table is arranged on the middle side in the outer sleeve. By means of the first main locking and axial positioning mechanism, a fixing groove in the conical column is accurately meshed with a fixing block on the inner sleeve, the stable and reliable axial positioning effect is achieved, the printing roller is fundamentally prevented from shaking left and right in the high-speed running process, and a solid foundation is provided for high-precision overprinting.

The utility model discloses a carton color register printing calibration device, and particularly relates to the technical field of printing calibration, the carton color register printing calibration device comprises a mounting base and a first longitudinal frame, the top end of the mounting base is fixedly provided with two transverse sliding seats which are symmetrically distributed, and the top ends of the transverse sliding seats are slidably clamped with a second longitudinal frame; a printing roller is arranged between the first longitudinal frame and the second longitudinal frame, and a calibration mechanism is arranged between the first longitudinal frame and the printing roller and between the second longitudinal frame and the printing roller. The calibration mechanism comprises two first bearings which are symmetrically distributed, and the first bearings are fixedly connected to the top of the first longitudinal frame and the top of the second longitudinal frame in a clamped mode respectively. Therefore, the printing roller is automatically calibrated, the center line of the printing plate of the paper box is aligned with the scribed line in the middle of the printing roller, inaccurate overprinting caused by misalignment of the position of the printing plate is prevented, and then the quality of color-register printing of the paper box is improved.

The application discloses a polyethylene film material suitable for high-speed gravure printing and a preparation method. The polyethylene film material is prepared from polyethylene with a density of 0.92-0.97 g / cm3 as raw material by adopting a 'five-layer co-extrusion blow molding+online longitudinal stretching' process, through step density layer design, the thickness ratio between layers is 1:1:2:1:1, and the polyethylene film material with a thickness of 20-25 mu is prepared through online twelve-roll longitudinal stretching. The polyethylene film material prepared by the application has high tensile strength (longitudinal), good elongation at break, and a 1% quadratic modulus (longitudinal) of 1356 MPa, and has good material rigidity. The polyethylene film material can meet the printing speed of 300-500 m / min in an ester-soluble ink system of a high-speed gravure printing machine, and the overlay precision is less than or equal to 0.2 mm. The polyethylene film material can provide technical guidance for the realization of polyethylene single material packaging.

The invention relates to a natural argil particle texture tipping paper printing system based on touch recognition and a preparation method, and relates to the technical field of printing. The system comprises a gravure plate roller 45-60 line 50-75 [mu] m engraving process special for a gravure printing unit, a touch recognition overprinting system laser or piezoelectric sensor processing control machine, a high-precision impressing system and a tension drying system. During preparation, the ratio of clay ink 1500-2200 meshes to water-based resin is 18-25: 72-80, the viscosity is 12-18 seconds, a coating of 0.2-0.3 g / cm < 3 > is formed through intaglio printing, and a touch recognition overprinting system achieves accurate overprinting with particle textures as color codes. The finished product has the roughness Ra of 3.5-4.2 microns, the water absorption rate of 3.2-4.5%, the aroma retention rate of 88-92% and the quantification of 30-34 g / m < 2 >, and is suitable for high-end tobacco packaging.

This invention discloses a high-elasticity three-dimensional adhesive composition for multiple overprinting and its preparation method, belonging to the field of three-dimensional coating materials technology. The composition comprises a polyurethane-polyurea interpenetrating network polymer emulsion, an organosilicon-modified waterborne polyurethane-acrylate hybrid emulsion, a crosslinking agent, functional composite fillers, a thickener, a dispersant, an antifoaming agent, additives, a pH adjuster, and deionized water. This invention constructs a dual crosslinking system of polyurethane-polyurea interpenetrating network and organosilicon hybrid emulsion, and combines it with rutile titanium dioxide, surface-modified nano-calcium carbonate, and nano-silica functional fillers. Combined with a nonionic polyurethane associative thickener to regulate rheological properties, the adhesive possesses high elastic recovery, anti-blocking properties, and strong thixotropic properties. During multiple overprinting, the adhesive can quickly set, without flowing or collapsing, with strong interlayer bonding, clear three-dimensional edges, and a smooth coating surface with excellent water and solvent resistance.

This invention relates to the field of label printing technology, and more particularly to a high-speed label printing and die-cutting correction device. The device includes a base, with support plates symmetrically fixedly connected to the top of the base. A fixing frame is fixedly connected between the tops of the support plates. A recycling roller is rotatably mounted at one end of the fixing frame. Inside the printing box, a drive motor drives a driving gear and a driven gear to mesh, driving the printing extrusion roller to rotate symmetrically and extrude ink, completing the clamping, feeding, and printing operations. Automatic cleaning of the roller surface is achieved in conjunction with a doctor blade, a suction fan, and a dust collection box. Simultaneously, a belt pulley drives a stirring rod inside the storage box to rotate, preventing ink sedimentation. This invention features a compact structure and stable mechanical transmission, enabling real-time correction during high-speed operation. It effectively solves problems such as roll material misalignment, edge curling, misregistration, and die-cutting misalignment, improving label production accuracy and efficiency.

The utility model discloses a roller adjusting device for a flat-plate offset press, which belongs to the technical field of flat-plate offset presses and comprises a flat-plate offset press frame for supporting a roller for the flat-plate offset press, adjusting grooves are arranged on two sides of the flat-plate offset press frame, and moving blocks are slidably connected in the adjusting grooves. An impression cylinder for offset lithography is rotatably connected to the interior of the moving block, a hollow column is welded to the top of the moving block, a spring is arranged in the hollow column, a contact is installed on the inner bottom wall of the hollow column, one end of the spring is connected with a moving disc, and the moving disc slides in the hollow column; according to the device, the automatic compensation capacity of the adjusting gap can be improved, deviation of the relative position of the roller caused by gap change is prevented, front and back printed patterns can coincide more accurately, and overprinting is more accurate.

The invention discloses an adjustable multicolor silk-screen printing platemaking positioning structure and a using method thereof, and relates to the technical field of multicolor silk-screen printing platemaking, the adjustable multicolor silk-screen printing platemaking positioning structure comprises a fixing frame and a hand wheel, an extension frame is arranged on one side of the fixing frame, and a fixing assembly used for auxiliary fixing is installed in the extension frame; the fixing assembly comprises a transverse lead screw, a first fixing plate, a longitudinal lead screw, a second fixing plate and a horizontal plate, and the first fixing plate is installed on the outer surface of the transverse lead screw in a threaded mode. According to the adjustable multicolor silk-screen printing platemaking positioning structure and the using method thereof, positioning is accurate, adaptability is high, multicolor overprinting quality is guaranteed, the first fixing plate and the second fixing plate are driven by the transverse lead screw and the longitudinal lead screw to achieve platemaking transverse and longitudinal accurate positioning, the extending frame corner datum design is matched, a to-be-printed plate can be rapidly fixed, and the working efficiency is improved. And the replacement requirements of different colors and different sizes of plate making can be conveniently met, overprinting errors caused by positioning deviation are effectively avoided, and the printing yield is increased.

This utility model discloses a cigarette overprinting deviation detection device and a cigarette overprinting machine. The cigarette overprinting deviation detection device includes an overprinting disk arranged on one side of the overprinting roller and a barcode scanning component disposed around the overprinting disk. The overprinting disk is coaxial with the overprinting roller and has a marking area arranged along the rotation direction of the overprinting disk. Multiple markings are arranged in the marking area. The barcode scanning component photographs the markings in the marking area when the overprinting roller drives the overprinting disk to rotate, in order to determine the lateral deviation value during the overprinting process. This utility model detects the markings on the overprinting disk by setting up an overprinting disk and a barcode scanning component to determine the lateral deviation value during the overprinting process. Then, when a lateral deviation value occurs, the machine is stopped for maintenance and adjustment. This allows for timely detection of the lateral deviation value during the cigarette overprinting process, thereby avoiding abnormal product loss and reducing production costs.

The invention provides an overprinted pattern processing method, an industrial printing control method and an industrial printing control system. The overprinted pattern processing method comprises the following steps: decomposing a target overprinted pattern into N printing layers, and defining alternating forward / reverse translation direction attributes for each printing layer; performing grating image processing on each printing layer to generate bitmap image data; y-axis mirror image overturning preprocessing is carried out on bitmap image data of the printing layer with the translation direction attribute being the reverse direction; and embedding registration mark pixel data in the first layer bitmap image data. According to the industrial printing control method, the UV flat plate ink-jet printing equipment is controlled to execute overprinting based on the processing result, printed materials are adsorbed and fixed to the same platform in the whole process, printing of all printing layers is sequentially completed through forward and reverse alternating translation of the platform along the Y axis, and interlayer alignment is completed through registration marks and a visual alignment system. According to the invention, the bitmap image data of the overprinted graph is adaptive to the forward and reverse alternate translation printing mode, and the position deviation introduced by layer-by-layer loading and unloading is eliminated.

The invention provides a trademark tape printing color difference automatic identification and evaluation method, which comprises the steps of extracting boundary positions of color layers from a captured trademark multi-color overprinting image, comparing the boundary positions of the color layers with standard overprinting positions, identifying position differences of the color layers, and obtaining overprinting offset of each region; comparing the overprinting offset of each area with a preset threshold value to determine an overprinting precision grade, acquiring a printing process record, extracting the front-layer ink drying time from the printing process record, and performing matching evaluation on the overprinting precision grade and the front-layer ink drying time to obtain a wetting influence degree; and separating front and back color layer spectrum signals from corresponding positions of the marked color mixing area coordinates, and classifying and grouping the front and back color layer spectrum signals according to hues to obtain a chromaticity distribution diagram of each color layer.

The utility model relates to the technical field of web printing presses, and discloses an adjustable material supporting device for a web printing press, which comprises a base, a plurality of connecting blocks are slidably connected to the front side and the rear side of the inner wall of the base, and adjusting rollers are rotatably connected to the opposite ends of the connecting blocks. A connecting frame is fixedly connected to the opposite end, corresponding to the lower side of the adjusting roller, of the connecting block on the left side, a sliding frame is connected to the inner wall of the connecting frame through a lifting assembly and used for adjusting the distance between the adjusting rollers on the two sides, and a first motor is connected to the bottom end of the sliding frame through a movable assembly. According to the utility model, through the liftable design, the heights of the adjusting rollers on the two sides can be adjusted at the same time, so that adjustment can be carried out according to tension required by materials, uniform tension of paper in the full width is ensured, blurring, double images or colors of printed patterns are avoided, meanwhile, uniform distribution of tension is beneficial to keeping the paper stable in the conveying process, and the production efficiency is improved. The overprinting precision of multi-color printing is improved, pattern alignment is ensured, and the product quality is improved.

This utility model discloses a printer humidification device comprising: a printer body and a door, the door being rotatably connected to the printer body; a printing space being provided within the printer body; a printing platform and a printing carriage being provided within the printing space; a print head being provided on the printing carriage; a humidifying water tank being provided at one end of the printing platform; and an atomizing module being provided on the humidifying water tank. The atomizing module is capable of humidifying the entire printing space; a humidity detector is provided on the other side of the printing platform. Through the atomizing module, the printing space can be humidified, maintaining it in a constant humidity state. In a constant humidity state, the humidity remains essentially unchanged, preventing the printing media from absorbing moisture and expanding or contracting due to humidity variations, thus maintaining the dimensional stability of the printing media and ensuring the accuracy of multi-color overprinting. Simultaneously, in a constant humidity environment, it can solve the ink splattering or splashing phenomenon caused by static electricity accumulation in low humidity environments.

This utility model provides a multi-color overprinting precision positioning roller printing machine, belonging to the field of printing technology. It includes a printing machine body, an operating platform, and support legs fixedly installed at the bottom of the operating platform. The positioning mechanism includes an arc-shaped fixing block fixedly installed on the outer surface of the support legs, a sleeve movably connected to the inner surface of the arc-shaped fixing block, a roller sleeved on the outer surface of the sleeve, an inner support assembly disposed on the outer surface of the support legs for fixing the roller, and a drive assembly disposed on one side of the inner support assembly for rotating and retracting the printed paper sheet. This utility model, through the mutual cooperation of the various components of the positioning mechanism, ensures accurate positioning each time material is loaded. Furthermore, the cylinder drive achieves a uniform and stable clamping force distribution, avoiding roller displacement or tilting caused by inaccurate manual adjustment. It also ensures consistent tension and stable rotation speed of the material during winding, improving printing accuracy and winding quality.

The invention relates to a control system technology, and discloses an overprinting precision control method based on a digital printer and a printing system, by adopting a mark with a preset invisible spectrum, a datum mark is deployed to provide a precise reference for subsequent compensation, and interference of the mark on the appearance of a finished product is avoided; in addition, by calculating multi-dimensional overprinting deviation parameters including deformation coefficients and executing overprinting compensation of geometric transformation and / or ink jet control according to the multi-dimensional overprinting deviation parameters, overall offset and rotation can be corrected, and non-linear local deformation and mechanical microcosmic errors of materials can be accurately compensated. Full-automatic real-time closed-loop control is formed in the whole process, manual intervention is reduced, continuous self-adaptive adjustment can be achieved in high-speed continuous printing, the overprinting precision and stability under the complex and changeable working conditions are remarkably improved, and the overprinting efficiency is improved. In addition, the invention also discloses a control device and a computer readable storage medium.

This invention discloses a sintered NdFeB magnet and its bluing process, relating to the field of magnet corrosion protection technology. The bluing process includes the following steps: dry polishing of the NdFeB black sheet using a composite polishing medium to remove surface oil, dust, and a dense oxide layer, exposing a fresh active substrate and forming a rough interface; the composite polishing medium consists of stone particles, shell particles, and sawdust; and bluing the polished NdFeB black sheet to induce an oxidation reaction on the substrate surface, generating a blue Fe3O4 protective film. This bluing process achieves a magnetic loss repair rate of up to 1.19%, while simultaneously achieving zero chemical emissions, zero wastewater generation, and replacing expensive controlled atmospheres with zero-cost air. It also fundamentally solves the rigid constraints of process connections caused by wet material overprinting, providing a surface protection solution for NdFeB magnets that combines environmental friendliness, high corrosion resistance, magnetic property repair capabilities, and low cost.

This invention relates to the field of artificial intelligence and human-computer interaction technology, and discloses a cloud-edge collaborative processing system and method for answer sheet grading, tracking, and feedback output. The system includes a user terminal, a cloud processing module, an edge module, a printing and scanning terminal, an object storage and external computing service module. The method establishes scanning batch records in the cloud processing module, performs recognition processing on the scanned documents to form structured grading data, generates a set of tracking elements, and outputs and provides feedback on the execution status according to the tracking output method. The beneficial effects are: it can complete overprinting in the original paper tracking mode and rearrange the output in the new paper tracking mode; it supports the generation and printing of feedback documents; and it achieves integrated collaboration of grading, tracking, and feedback. This solves problems in existing technologies such as the difficulty in stably implementing original paper tracking, the difficulty in forming printable feedback documents from feedback content, the imperceptibility of on-site tracking printing status, and the difficulty in maintaining school equipment.