614 results about "Color printing" patented technology

The invention discloses a color printed matter defect automatic detection system and method based on machine vision, and relates to the technical field of computer vision, and the method comprises the steps: converting a color image into a gray level image, generating a boundary enhanced gray level image through a Canny edge detection algorithm, calculating the offset of edge pixels through sub-pixel recovery, and obtaining a color printed matter defect detection result. Extracting an edge pixel proportion based on the sub-region division table, performing amplification tracking on edge dense sub-regions, and analyzing RGB color deviation; through a multi-scale Gaussian pyramid decomposition and edge refinement technology, analyzing multi-scale features of the boundary enhanced grayscale image and optimizing edge precision; and classifying edge defects and color defects of each sub-region by utilizing a defect threshold value, calculating a comprehensive risk value, increasing a risk level according to a boundary condition, and generating a detection report. According to the method, the Canny edge detection algorithm is combined with sub-pixel recovery, so that the edge extraction precision and the positioning capability of color printed matter defect detection are improved.

The invention provides a four-color offset press registration error dynamic compensation method and system based on multi-sensor fusion. According to the method, the rotating phase of the printing cylinder, the tension fluctuation value of the printing stock and the periodic offset of the color register mark are collected, the rotating phase of the printing cylinder is matched with the reference phase in real time, the first dynamic compensation signal is generated, and then the color register mark is obtained according to the tension fluctuation of the printing stock and the deviation degree of the tension interval. Generating a second dynamic compensation signal, and performing overlay analysis on the periodic offset, the first dynamic compensation signal and the second dynamic compensation signal to generate a composite compensation instruction when the periodic offset of the chromatography mark is detected to exceed a preset tolerance range; according to the technical scheme provided by the invention, the technical problems of single monitoring dimension, serious compensation hysteresis and poor multi-link collaboration in a traditional method are effectively solved, and the registration precision and the system robustness in a high-speed multi-color printing scene are remarkably improved.

The invention discloses a method for controlling multi-color printing of a thermal transfer printer. The method comprises the following steps: visually editing and typesetting, displaying a separated preview page according to preset color layer decomposition parameters, performing color separation processing on an original design page according to the preset color layer decomposition parameters, and supporting synchronous printing, asynchronous printing and cross-medium printing. An original design page is decomposed into single-color printing instruction sequences according to color layers through a color separation processing module. Based on the medium position real-time tracking technology, the main control circuit board dynamically coordinates all the single-color printing units to execute color separation printing when the medium moves to the corresponding position, and three modes of same-medium multi-color synchronous printing, asynchronous printing and cross-medium parallel printing are supported. The problems that a traditional heat transfer printing machine is low in multi-color overprinting precision and poor in efficiency are solved, and the flexibility and production efficiency of color mark printing are remarkably improved.

The invention relates to the technical field of color printing product quality detection, and discloses a green color printing product defect intelligent diagnosis method based on deep learning. Visible light, hyperspectral and infrared thermal imaging data of a green color printing product are collected, multi-scale feature extraction is carried out, defect feature vectors such as surface texture, chromatic aberration distribution and heat conduction abnormity are obtained, and a cross-modal attention mechanism is utilized to fuse the defect feature vectors into a unified defect representation vector. And determining a defect type and a repair scheme through a dynamic classification algorithm in combination with the defect knowledge base. The algorithm comprises the steps of generating an initial candidate defect set, constructing a topological graph, optimizing defect type judgment and the like. A multi-dimensional anomaly detection model is adopted to process sudden defects, and a causal inference engine is utilized to adaptively adjust a repair scheme. And constructing a defect rule knowledge graph to verify the compliance of the repair scheme. The method is accurate in detection, intelligent in diagnosis and efficient in repair, and effectively improves the quality detection and repair level of the green color printing product.

The utility model provides a high-speed imaging device and a high-speed thermal printer, comprising a plurality of thermosensitive modules, a plurality of rubber covered roller modules and a paper feeding driving device, the thermosensitive modules and the rubber covered roller modules are located at two sides of a paper feeding channel; the thermosensitive module comprises a thermosensitive support and thermosensitive pieces, the thermosensitive pieces are arranged on the thermosensitive support, printing head arrays are arranged on the thermosensitive pieces, the multiple printing head arrays are overlapped along the paper feeding channel, the paper feeding driving device drives the rubber rollers to rotate synchronously, and one thermosensitive piece is opposite to one rubber roller. The at least two thermosensitive sheets are arranged on the same side of the paper feeding channel, and the imaging areas of the printing head arrays on the thermosensitive sheets are overlapped, so that the multiple thermosensitive sheets can image the same side of the printing medium for multiple times, even if the printing speed and the paper feeding speed are improved, the imaging quality such as concentration and definition can be met, and the printing efficiency is improved. And the purpose of high-speed printing is achieved, and double-color or multi-color printing can be achieved through the arrangement of the multiple thermosensitive pieces.

The invention discloses shell-imitated mechanically-enhanced photonic crystal paper, a preparation method thereof and application of the shell-imitated mechanically-enhanced photonic crystal paper in repeatable printing. The photonic crystal paper is prepared from a zirconium phosphate layered material and soft gel through blade coating shear force induced self-assembly alternate arrangement. The photonic crystal paper disclosed by the invention has a shell-imitated brick mud structure, and meanwhile, zirconium phosphate and soft gel have a strong hydrogen-bond interaction, so that the photonic crystal paper has high tensile strength, high flexibility, high modulus and self-supporting property, and can support repeated printing. When an aqueous solution containing a hygroscopic solute is used as ink to carry out ink-jet printing on the photonic crystal paper, the gel matrix is swelled, the lattice spacing is increased, and a lasting multi-color printing effect is achieved. The selected zirconium phosphate layered material has good thermal stability, and meanwhile, the brick mud structure can reduce the oxygen transmittance, so that the photonic crystal paper has flame retardant property, and the storage safety is improved. The blade coating method is simple and rapid, so that continuous production of the photonic crystal paper can be realized.

The invention provides a multi-color-sleeve printing real-time deviation rectifying method and device, a medium and computer equipment. The deviation rectifying method comprises the steps that a flexible printing plate material prints an Nth-color pattern on an N-1-color pattern in an overlapped mode through an Nth-color group printing unit, and printing is conducted in a preset area to obtain an Nth-color registration mark; image capturing is carried out on the passing first-color registration mark and the Nth-color registration mark, the mark offset of the Nth-color registration mark relative to the first-color registration mark is calculated, a deviation correction signal is generated, and the deviation correction roller is driven through the deviation correction signal to carry out position compensation on the (N + 1) th-color-group printing unit in the second direction and the rotating direction. The method is independent of the identification of the printing pattern of the effective area of the flexible printing plate material, the first-color registration mark and the Nth-color registration mark of the deviation correction mark are independently identified and calculated, the method has the advantages of independent image acquisition and independent calculation, and an implementation basis is provided for the replacement of a foreign high-precision deviation correction system by a domestic servo and mechanical deviation correction system.

The invention discloses a color 3D printing data processing method and device, equipment, a medium and a product, and the method comprises the steps that according to color features in a color grid model M, a double-color material transition process color mixing model GMap corresponding to different colors is established; establishing a color voxel model A of the color mesh model for the given color mesh model M; according to the color voxel model A and the color grid model M, a color filling path and a conventional filling path in each slice layer are obtained through calculation; according to the established double-color wire transition process color mixing model GMap, color mixing path mapping processing of a color filling path and a conventional filling path in each layer is completed; and the mapped color filling paths in all the layers and the conventional filling paths are converted into a GCode printing instruction file, and single-nozzle double-color wire mixed color printing is completed. By means of the innovative color mixing model and voxelization treatment, high-quality color mixing printing of the single-nozzle 3D printer is achieved, and the printing precision and efficiency are improved.

The utility model relates to the technical field of 3D printing, in particular to a line merging mechanism, a printing head and a three-dimensional printer, the line merging mechanism is applied to printing equipment, the printing equipment further comprises an extrusion mechanism and a nozzle assembly, and the extrusion mechanism is used for selectively driving a target consumable in a plurality of consumables to advance or retreat; the extrusion mechanism is located at the upstream of a consumable path of the line combining mechanism and the nozzle assembly, and the line combining mechanism comprises a plurality of feeding channels and at least one discharging channel communicated with the feeding channels; the nozzle assembly is used for being communicated with the discharging channel. The printing head comprises the line merging mechanism. The three-dimensional printer comprises the line merging mechanism and a printing head. According to the technical scheme, multi-color printing can be achieved without cutting off the consumables.

The invention discloses a method for carrying out layered color mixing printing on plane color content by using an FDM printer based on a multilayer color reverse solution algorithm, and belongs to the technical field of 3D printing, and the method comprises the following steps: step 1, carrying out vectorization conversion on color information of an input image to obtain a preprocessed image with a clear contour and pure color; and 2, building a multilayer color reverse solving system based on an improved Kubelka-Munk model, reversely and accurately calculating color values of all layers, and ensuring that the color of each layer strictly conforms to the actual color generation capability range of the consumable. And step 3, carrying out layer-by-layer printing on the layering result according to a specific thickness and sequence, and finally presenting the original picture color on the contact surface of the printed piece and the hot plate. The method has the advantages that patterns with richer colors can be presented on the surface layer of a printed piece, and the limitation that the color of a printing material is limited in presentation in FDM multi-color printing is improved; meanwhile, under the condition that the printing process and hardware iteration cost are not increased, richer color selection is achieved.

The invention relates to erasable color thermo-sensitive paper and a preparation method thereof.The erasable color thermo-sensitive paper comprises a protective layer, a thermo-sensitive coating and a base material layer, and the thermo-sensitive coating comprises a yellow thermo-sensitive coating, a first middle layer, a magenta thermo-sensitive coating, a second middle layer and a cyan thermo-sensitive coating which are sequentially arranged from top to bottom; the protective layer is arranged on the yellow thermosensitive coating, and the cyan thermosensitive coating is arranged on the base material layer; the color developing temperature difference among the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating is not less than 25 DEG C; the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating are respectively added with a heat conduction auxiliary agent. According to the erasable color thermo-sensitive paper, heat is isolated through the middle layer; the color developing temperature difference of the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating is not less than 25 DEG C, so that full-color printing can be realized by superposing three colors; and by adding the heat-conducting auxiliaries with different particle sizes, a more efficient erasing effect is obtained.

The invention discloses a two-color printing method based on a thermal printer. The two-color printing method comprises the steps that a two-color printing mode is started; performing color configuration on different types of to-be-printed information, and respectively setting the to-be-printed information as a first color and a second color; converting the character data to be printed into dot matrix data; according to the color configuration, converting the dot matrix data into double-color printing dot matrix data according to a double-color printing data encoding format; the control chip of the thermal printer separates second color printing data from the two-color printing dot matrix data, and respectively restores all the two-color printing dot matrix data and the second color printing data into 1-bit single-color printing dot matrix data; calculating the first color heating time and the second color heating time of the double-color thermo-sensitive paper according to the restored double-color printing dot matrix data and the second color printing data; and according to the first color heating time and the second color heating time, the printing head is controlled to heat the two-color thermo-sensitive paper in a time-sharing mode, and two-color printing is achieved. The printing information identification degree can be improved.

The invention relates to the technical field of printing and packaging, and discloses a printing ink spraying process for a color printing carton, which comprises the following steps: step 1, carton surface pretreatment: carrying out cleaning and micropore treatment on the carton surface, removing surface impurities by adopting an ultrasonic cleaning technology, and drying the carton surface; a micron-sized concave-convex structure is formed on the surface of the carton by using a low-temperature plasma technology, and the surface roughness range is Ra 1-3 microns, so that the adhesive force between the ink and the surface of the carton is enhanced; the basic ink and a functional additive are mixed in proportion according to the design pattern requirement, and the functional additive comprises nano zinc oxide particles with the mass fraction of 0.5%-2% and is used for improving the weather resistance and the antibacterial performance of the ink. The surface of the carton is subjected to special pretreatment, the adhesive force of printing ink is remarkably improved, the durability and stability of printed patterns are enhanced, high-precision pattern spraying is achieved through the intelligent image recognition and piezoelectric ink jet technology, the complex design requirement is met, and the printing quality is improved.

The present application relates to the technical field of textile design, and particularly relates to a method for improving fabric image color distortion by superimposing and developing color of sanding, which comprises the following steps: (1) CMYK four-color yarn design; (2) jacquard CAD design; (3) weaving of grey fabric; (4) dyeing and finishing of the grey fabric; the dyeing and finishing of the grey fabric comprises sanding after light bleaching and fading treatment of the grey fabric. The present application adopts the design method of superimposing and developing color of color image fabric, the color developing mode of color mixing of jacquard CAD technology, and designs through the spinning form of colored weft yarn, jacquard CAD and dyeing and finishing, produces the effect of mutual color bleeding and color mixing of color materials of CMYK four-color yarn through fading treatment, and then carries out sanding treatment, so that the fine and dense fluff of the color yarn is superimposed with the effects of color transmission and improvement of complete covering, the color yarn is subjected to color transmission and superimposed color mixing again, the color is softer and more real by adopting the mode similar to the superimposition of four plates of CMYK color printing.

The invention relates to the field of data analysis, in particular to a publication color adaptive optimization method based on printing color deviation, which comprises the following steps: identifying color data of a publication to extract color block distribution characteristics of the publication; evaluating a printing deviation interference characterization value of the publication based on the color block distribution characteristics in combination with a color number corresponding to a plurality of color blocks of the publication so as to mark the publication; according to the marking result, color printing of the publication is analyzed; according to the method, color data identification and feature extraction, printing deviation interference evaluation and marking, color fusion color block analysis, printing condition judgment and parameter adjustment are carried out on the publications, and then the color fusion color blocks meet the standard printing conditions or not according to the printing level characterization parameters, and the color printing of the corresponding publications is adjusted according to the color data identification and feature extraction, the printing deviation interference evaluation and marking, the color fusion color block analysis and the printing condition judgment and parameter adjustment. And on the premise of adapting to a complex color scene, the printing quality of the publication is precisely regulated and controlled, and the printing precision and the color rendition degree of the publication are improved.

The invention relates to the technical field of adaptive control systems, and discloses a time-varying parameter self-tuning multicolor printing synchronous control system, which comprises a data acquisition module, a decision module, a compensation module, a control instruction module and an execution module, wherein the data acquisition module is used for acquiring state parameters of each color cell; the decision module is used for identifying a target color group needing to be compensated and determining the compensation amount of the target color group and a decoupling mode between the color groups; the compensation module is used for dynamically constructing a decoupling compensation matrix and calculating the compensation amount of a non-target color group based on the decoupling compensation matrix; the control instruction module is used for mapping the compensation quantity of each color group into the adjusting quantity of the working parameters and generating a control instruction; and the execution module is used for executing the control instruction and driving the working parameters of each color cell to be adjusted. The synchronization precision and stability of the multi-color printing system are improved, and the problem of coupling interference existing in the industry for a long time is solved.

The invention discloses a two-color heat-sensitive material as well as a preparation method and application thereof, and relates to the technical field of heat-sensitive color development materials. The invention provides a double-color heat-sensitive material. The double-color heat-sensitive material is prepared from the following components in parts by weight: 20 to 50 parts of color developing agent dispersion liquid, 5 to 15 parts of dye precursor microcapsule emulsion A, 15 to 45 parts of dye precursor microcapsule emulsion B, 5 to 15 parts of adhesive and 5 to 30 parts of filler. According to the invention, the dye precursor microcapsule emulsion A and the dye precursor microcapsule emulsion B with specific structures are mixed, and the two microcapsule emulsions are matched for use, so that two high-definition hues can be printed at the same time based on the magnitude of printing energy by utilizing different softening points of wall materials of the two microcapsule emulsions; the two-color heat-sensitive material has excellent hue isolation (high-definition low-temperature color development hue and clear high-temperature color development hue can be obtained at the same time) and aging resistance, the problems that an existing two-color heat-sensitive material can only achieve two-color printing under high-energy-level printing and printing is not clear are solved, and the application field of the two-color heat-sensitive material is widened.

A low-temperature color printing drying device comprises a conveying belt used for conveying printed matter, the conveying belt sequentially penetrates through a curing box, an exhaust box and a drying box, and openings allowing the conveying belt to pass through are formed in the side walls of all box bodies; a plurality of ultraviolet curing lamps are arranged on the top in the curing box, an air inlet fan is arranged on the outlet side of the drying box, and an exhaust fan is arranged on the top of the exhaust box. According to the low-temperature color printing drying device, printing ink is primarily cured through the ultraviolet curing lamp, then enters the drying box and is dried through strong wind; and moreover, a dry air generator is arranged, so that air with dry flavor is blown out, and the printing ink can be quickly dried under the condition that heating equipment is not used.

A method for improving the utilization rate of spray holes by obliquely arranging a spray head comprises the steps that the spray head is rotated by a certain angle to be obliquely installed on a printing trolley, a parting line is arranged on the spray head, the length direction of the parting line is consistent with the advancing direction of the printing trolley, and spray holes in all constant-color spray holes in a small coverage area on one side of the parting line are closed; the spray holes in the spot color spray holes in the small coverage area on the other side of the parting line are closed; according to the method, after the spray head is obliquely arranged, a dividing line located in the middle can divide two kinds of spray holes in an unequal division mode, a color printing area and a spot color printing area which are different in size are formed on the inner side and the outer side of the spray head in a staggered mode, and after the color printing area and the spot color printing area which are slightly closed at opposite angles are formed, the color printing area and the spot color printing area are formed. A large color printing area and a large spot color printing area are formed on the inner side and the outer side of the spray head, the utilization rate of spray holes in the spray head can be effectively increased, and the printing efficiency is improved.

The invention discloses a metasurface device combined with an F-P (Fabry-Perot) cavity, the metasurface device structurally comprises an upper reflecting layer, a metasurface layer and a lower reflecting layer, the upper high reflecting layer and the lower high reflecting layer form a micro-nano F-P cavity, and the metasurface layer in the middle is formed by an anisotropic medium nano column array. Based on the wavelength selection principle of the F-P cavity, narrow-band filtering can be realized; based on a geometric phase principle, phase regulation and amplitude regulation can be realized by arranging medium nano-columns with specific shapes, sizes and azimuth angles. The geometric phase metasurface is embedded into the micro-nano F-P cavity, and the wavelength, the phase and the amplitude of a light field can be modulated independently at the same time. The invention has the advantages of flexible design, compact structure, strong regulation and control capability, high regulation and control degree of freedom and the like, and has very high application prospects in various practical applications such as light field regulation and control, color printing and holographic display, information storage, optical anti-counterfeiting and the like.

The utility model belongs to the technical field of color printing machines, and particularly discloses a double-rubber-head color printing machine which comprises a machine body and a transplanting mechanism, the transplanting mechanism is arranged on the inner side of the machine body, and the transplanting mechanism comprises a sliding table supporting plate, a supporting column, a mini air cylinder, a linear sliding rail, a sliding table base, a first sliding table air cylinder, a second sliding table air cylinder, a finger plate and a finger air cylinder. The supporting column is fixed to the lower portion of the sliding table supporting plate, the sliding table supporting plate is connected with the machine body through the supporting column, the mini air cylinder is fixed to the side edge of the sliding table supporting plate, the linear sliding rail is installed on the upper portion of the sliding table supporting plate, the sliding table base is slidably connected to the linear sliding rail, and the output end of the mini air cylinder is connected with the sliding table base. The first sliding table air cylinder and the second sliding table air cylinder are installed above the sliding table base, the second sliding table air cylinder is fixed to the sliding table base, the output end of the second sliding table air cylinder is connected with the first sliding table air cylinder, the finger plate is installed at the output end of the first sliding table air cylinder, a plurality of clamping assemblies are arranged on the finger plate, and each clamping assembly comprises a plurality of finger air cylinders.

The invention provides a multi-color printing control method, device and system of a thermal transfer printer, which are applied to a system comprising an editing and typesetting terminal and a thermal transfer printing mechanism, and the thermal transfer printing mechanism is provided with at least two printing heads which are respectively provided with colored tapes with different colors. The method comprises the following steps: acquiring a design page containing images and texts with various colors at an editing and typesetting terminal; identifying the color of each currently available color tape of the thermal transfer printing mechanism to form an available color set, and establishing a corresponding relationship between each printing head and the color of the color tape of the printing head; analyzing the design page pixel by pixel, matching the color of each pixel with the available color set to determine the target available color of the pixel, and merging the pixels with the same or similar target available colors into a corresponding printing object; distributing the printing objects to printing heads corresponding to the target available colors of the printing objects, and generating printing data of the printing heads based on distribution; and the printing data are sent to a thermal transfer printing mechanism, so that a multi-color printing task is completed.

The invention discloses a hard anode color printing process, and relates to the technical field of anode color printing. The method comprises the following specific steps: primary grinding: performing mirror grinding on the surface of a workpiece; anodic oxidation is carried out, and an oxidation layer with tiny holes is generated on the surface of the workpiece; coloring: printing a colored process pattern on the surface of the workpiece to enable colored ink to enter the tiny holes; high-temperature hole sealing is conducted, specifically, the colored workpiece is subjected to hole sealing treatment; and secondary grinding is conducted, specifically, mirror grinding is conducted on the surface of the workpiece with the printed pattern. According to the embodiment of the invention, the problems of fuzzy patterns, unclear boundaries, rough film layers and the like in anode color printing in the traditional technical scheme are solved, and the pattern imaging quality and the overall decoration effect are remarkably improved.

The utility model relates to the technical field of pigment proportioning, in particular to a pigment proportioning device for carton color printing, which comprises a tank body, the tank body comprises a proportioning tank, and the top end of the proportioning tank is fixedly connected with a feed port. The first rotating rod is driven to rotate through operation of the first motor, pigment can be stirred and mixed through the first stirring rod, and through arrangement of the first gear and the second gear, the second rotating rod can drive the second stirring rod to rotate reversely under the action of the second gear; the first stirring rod and the second stirring rod can stir the pigment in opposite directions at the same time, the bidirectional mixing effect is achieved, the pigment can be better impacted and fused in the proportioning tank, the stirring strength and the mixing quality can be improved, meanwhile, the pigment at the bottom of the proportioning tank can be lifted through the arrangement of a second motor, and the mixing efficiency is improved. And the pigment at the bottom can be better mixed with the pigment at the middle upper layer.

The invention belongs to the technical field of printing devices, and discloses an efficient eight-color printing device. The box body is rectangular, a door body is arranged on the front face of the box body, a partition plate and an installation frame are fixedly installed in the box body, and the box body is fixedly installed at the top of the box body; the printing machine is fixedly mounted at the top of the mounting frame, penetrates through the motor and is used for printing materials; through cooperation of the racks and the first positioning blocks, the wide edge of a to-be-printed material can be accurately corrected and clamped, the two racks can synchronously move through meshing of the racks and the gears, and therefore it is guaranteed that the to-be-printed material is accurately positioned in the wide edge direction, it is guaranteed that the material cannot deviate in the positioning process, the positioning precision is effectively improved, and the printing quality is improved. The printing quality is ensured; under the combined action of the second positioning block and the sliding rail, the rectangular block and the short connecting rod are matched to ensure that the long edge of the material is uniformly clamped.

The utility model discloses a device for quickly changing color printing plates, comprising a base, one side of the base is fixedly connected with a bracket, one end of the bracket is installed with an electric cylinder, the end of the piston rod of the electric cylinder is installed with a quick-change assembly for changing the color printing plates, telescopic rods are fixedly installed around the top of the base, the telescopic rod is arranged as an outer rod sleeve inner rod, the top of the inner rod of the telescopic rod is fixedly connected with a limiting plate, a second spring is installed between the limiting plate and the base, the top of the limiting plate is abutted against the quick-change assembly, and the printing plate is accurately fixed on the main cover plate by arranging the quick-change assembly, which greatly improves the printing accuracy of the printing plate and reduces the waste of materials. At the same time, by abutting the limiting plate with the main cover plate when in use, the limiting plate can elastically limit the main cover plate under the action of the second spring, thereby buffering the downward pressure of the electric cylinder pushing the main cover plate, thereby greatly improving the printing quality.

The utility model discloses a textile digital color hot stamping and gold stamping integrated printing production line which comprises a UV printing device, an automatic powder scattering and shaking device and a drying device. The UV printing device is provided with a UV curing lamp and at least three independent printing nozzles. The color printing nozzles are used for printing color UV printing ink and simulated color UV printing ink, the white printing nozzle is used for printing white UV printing ink, and the gloss oil printing nozzle is used for printing gold stamping gloss oil. The gold stamping and flocking device has the advantages of low cost, high speed, high efficiency and no influence on impression after gold stamping or flocking shedding.

The utility model discloses a carton color printing film covering device, and relates to the technical field of film covering. The carton folding device comprises a supporting frame, a conveying belt is arranged in the supporting frame, and the conveying belt is used for conveying folded cartons; the device further comprises a fixing frame, the fixing frame is located above the conveying belt, the fixing frame is fixedly installed at the top of the supporting frame, a movable plate is slidably connected into the fixing frame, an air cylinder is fixedly installed at the top of the fixing frame, and one end of a piston rod of the air cylinder slidably penetrates through the fixing frame and is fixedly connected with the top of the movable plate. According to the carton color printing film covering device, due to the design of the film covering assembly, the carton is effectively prevented from moving and wrinkling, the carton color printing film covering device is suitable for carton boards with different thicknesses, and the film covering quality is remarkably improved; the positioning assembly ensures that the carton conveying position is accurate, and the film covering precision is further improved; on the whole, the device is reasonable in structure and complete in function, and has remarkable market application value.

The utility model belongs to the technical field of digital color printing equipment, and particularly relates to a deviation rectifying device for digital color printing, which comprises sleeve units, a plurality of sleeve units are spliced to form a complete sleeve, a movable groove is arranged between every two adjacent sleeve units, and an extension plate is arranged on the surface of each sleeve unit and positioned on one side of the movable groove. A set of inclined first sliding grooves are formed in the two sides, close to each other, of the two opposite extending plates, a clamping jaw is movably connected into each movable groove, a set of sliding pins are arranged on the two sides of each clamping jaw, and each set of sliding pins is slidably connected with the corresponding first sliding grooves and can stretch out and draw back at the same time to adjust the clamping diameter. Therefore, the clamping and mounting requirements of feeding rollers with different diameters can be met, it is guaranteed that the feeding rollers can be effectively prevented from being in an eccentric state, the range of an abutting-pulling area formed by the abutting-pulling pieces is made to change in a self-adaptive mode along with the diameter of the feeding rollers, then a raw material belt can be stably abutted, and the service life of the raw material belt is prolonged. And the problem that the color printing raw material belt is stuck is effectively avoided.

The invention relates to a color 3D printing device supporting waste online synchronous recovery and a using method. The 3D printing device comprises a device frame, and a color printing nozzle capable of moving forwards, backwards, leftwards and rightwards is arranged on the device frame. The device comprises a device frame, a model printing base table capable of moving in the vertical direction is arranged on the device frame, a waste synchronous recycling mechanism is arranged on the device frame and comprises a waste printing base table, a first rolling shaft, a second rolling shaft and a rolling shaft driving motor are arranged on the waste printing base table, and a conveying belt is arranged on the first rolling shaft and the second rolling shaft. A filament material chuck used for recycling filament-shaped waste materials is arranged on the device frame and located behind the conveying belt, and a chuck driving motor is arranged on the device frame. The problem of recycling of waste generated by color FDM printing is effectively solved, the defect of treatment of current waste recycling equipment is overcome, the waste recycling equipment is more suitable for waste recycling of consumer-level color 3D printing application scenes, and meanwhile the utilization rate of materials is increased.