60 results about "Colour difference" patented technology

The invention provides an intelligent paint make-up system capable of accurately identifying and matching the color of aged vehicle paint and a paint make-up method thereof, and the system comprises a color identification module which is used for extracting the color features of a to-be-repaired paint surface, thereby identifying the color of the to-be-repaired paint surface, and obtaining an image of the to-be-repaired paint surface; the data processing module is used for performing multi-angle spectral decomposition on the to-be-repaired paint surface image and predicting a paint surface fading curve so as to obtain a matching weight of color adjustment; the automatic paint mixing module comprises a precise proportioning pump unit and a multi-shaft stirring device and is used for mixing pigments according to the proportioning weight of color adjustment; and the closed-loop feedback module comprises a real-time chromatic aberration detection unit and is used for correcting errors of the pigments in real time and finally outputting the refinishing paint consistent with the spectral data of the paint surface to be repaired.

The invention discloses color difference detection equipment and process for production of high-wear-resistance regenerated polyester dyed cloth, and relates to the technical field of color difference detection equipment. Comprising a rack main body, a control main body is arranged at the front end of the rack main body, the rack main body is provided with a mounting mechanism for color difference detection for high-wear-resistance regenerated polyester dyed cloth production, and the mounting mechanism comprises a detection assembly and a control assembly, according to the invention, a red, green and blue three-primary-color narrow-band optical filter is adopted, and a second bevel gear and a worm connected with the second bevel gear are driven to rotate through meshing; the worm is meshed with a worm gear on the outer wall of the vertical shaft to drive the vertical shaft to rotate, and then the connecting rod drives the three sets of mounting frames to rotate synchronously, so that optical filter switching is achieved, the cloth cover chromatic aberration performance in different illumination environments can be simulated, the detection result is more accurate and comprehensive, the detection error caused by single illumination is reduced, and the detection efficiency is improved. And the comprehensiveness and the accuracy of chromatic aberration detection are improved.

The invention relates to a method for eliminating color difference type defects of a stainless steel cold-rolled sheet, which comprises the following steps of: controlling the finish rolling temperature in finish rolling of a plate blank and the coiling temperature after finish rolling, so that the thickness of an oxide layer on the surface of the plate blank is within 8-12 microns; in the cold rolling process, the roller roughness of a last roller is adjusted according to the color difference value of the plate blank so as to reduce the edge color difference and the center color difference of the plate blank; and the annealing process after cold rolling is controlled so that the thickness fluctuation of the Cr2O3 film can be smaller than or equal to 5%. By means of the method for eliminating the color difference defects, the color difference defect rate of the 304 stainless steel cold-rolled sheet is reduced to 0.4% from 2.8%, the overall color difference is smaller than or equal to 0.7, the corrosion resistance of a passive film is improved by 40% (salt spray test is larger than or equal to 96 h), and the international leading level is achieved; and the requirement of a high-quality surface is met.

This temperature-indicating label is provided with: a base material; an adhesive layer to be affixed to the surface of a living body; and a temperature-indicating ink layer that is positioned between the base material and the adhesive layer, and that is configured so as to change color in accordance with the temperature of the temperature-indicating ink layer. The stress at 20% stretching is 0.2 N / mm2 to 10.0 N / mm2. The thickness of the temperature-indicating ink layer is 1-9 µm. In a state in which the adhesive layer is affixed to a white plate, the color difference ΔE* ab in the L*a*b* color space between a first state in which the temperature-indicating ink layer exhibits a first color and a second state in which the temperature-indicating ink layer exhibits a second color different from the first color is greater than 10. The color change between the first color and the second color is visible via the base material.

The utility model discloses a temperature control color difference prevention plate stirrer for artificial stone plate production, which belongs to the technical field of artificial stone plate production equipment and comprises a water bath thermotank, a support, a material mixing tank, a stirring motor, a stirrer and a temperature regulation and control machine. The water bath constant-temperature box is communicated with the temperature regulation and control machine through a water circulation pipeline, the temperature regulation and control machine drives circulating water to flow in a circulation system formed by the water bath constant-temperature box, the water circulation pipeline and the temperature regulation and control machine through a water pump, and the circulating water is regulated and controlled to be in a constant-temperature state; a feeding pipe is arranged at the top of the mixing tank, and the stirring motor is arranged at the top of the feeding pipe and connected with the stirrer; and a discharge pipe is arranged at the bottom of the mixing tank. The temperature regulating and controlling machine is used for heating circulating water, the temperature in the material mixing tank can be effectively controlled within a preset range, and therefore color difference of plates is effectively prevented, the quality of the plates is ensured, particularly, the material mixing tank is arranged in the water bath constant temperature box, the material mixing tank is fully wrapped by water in the water bath constant temperature box, and the temperature control effect is better.

The utility model discloses an anti-settling water-based paint storage tank, belongs to the technical field of storage tanks, and solves the problems that water-based paint is stored in the storage tank for a long time or settles, so that obvious color difference of one barrel of paint is possibly caused by precipitation in finish paint, and the final coating effect is influenced. Comprising a tank body, a vertically-arranged vertical cylinder is arranged in the tank body, the outer ring of the vertical cylinder is communicated with a plurality of hard connecting cylinders located at all horizontal heights, and the hard connecting cylinders can be movably arranged relative to the vertical cylinder. Water-based paint is stored in the tank body through the feeding pipe, the valve is closed, and the water-based paint in the tank body is stirred up and down and is prevented from settling by intermittently supplying air to the air pump to enable air in the air pipe to flow, so that the soft connecting pipe expands to lift the hard connecting cylinder, the air pump stops flowing out of the air, the soft connecting pipe shrinks and the hard connecting cylinder falls. When discharging is needed, the outlet valve is opened, and the paint is discharged through the discharging pipe.

This invention discloses a PUR adhesive mixing process for edge banding, comprising: edge banding adhesive preparation, intelligent PUR adhesive dispensing machine system setting, high-precision color recognition sensor calibration, system setting confirmation, multi-system collaborative action construction, implementation of adhesive mixing ratio control, and adhesive application and edge banding detection. This invention integrates an edge banding machine adhesive application unit, a color recognition module, and an intelligent PUR adhesive dispensing machine system to jointly achieve the PUR adhesive mixing processing effect. It solves the problem of traditional single-color adhesive dispensing machines only supporting single adhesive output, and particularly addresses the issue of controlling the color difference between the adhesive line and the color of the edge banding board, meeting the processing requirements of gray and khaki colors, overcoming the problem of color difference control in edge banding of different colored boards, and creatively utilizing color mixing and adhesive mixing technology, greatly enriching the selectivity of edge banding processes.

This invention discloses a method for confirming color difference in coatings, comprising: circulating the paint to be tested in a paint pump for a first preset time; providing at least two sets of electrophoretic test plates, A and B, wherein set A includes at least three test plates A1, A2, and A3, and set B includes at least three test plates B1, B2, and B3; spraying A1, A2, A3, B1, B2, and B3 respectively; and baking A1, A2, A3, B1, B2, and B3 respectively in a topcoat baking oven. Film thickness tests were performed on A1, A2, and A3 to obtain the first film thickness parameters of the electrophoresis test plates in group A; color difference tests were performed on B1, B2, and B3 to obtain the first color difference variation parameters of the electrophoresis test plates in group B; based on the first film thickness parameters and the first color difference variation parameters, the first correspondence between the color difference and film thickness of the paint to be tested was calculated; based on the first correspondence, the first actual color difference parameters of the paint to be tested under the standard film thickness were calculated; and the first actual color difference parameters were compared with the range of the standard color difference parameters.

Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.

This invention discloses a gradient metering standard color masterbatch and its application method, belonging to the field of plastic color matching technology. Addressing the problems of poor dispersibility of traditional color masterbatches, difficulty in adapting customized color masterbatches to matching parts with color differences, and serious pollution from pigment processing, this invention first prepares micro-volume color masterbatches with a diameter and length ≤1mm, enabling uniform dispersion with a single color addition of 0.5% or more. It also establishes a gradient metering color masterbatch library, setting the pigment content in 500g of color masterbatch according to a geometric progression, achieving a micro-color adjustment capability of 0.01g / 100kg. During color matching, a color masterbatch of corresponding concentration is selected based on the target pigment usage. The addition amount is accurately calculated using the formula: weight = target usage / concentration × 500, allowing for the mixing of multiple color masterbatches. This invention combines the flexible fine-tuning capability of pigments with the cleanliness and stability of color masterbatches, completely eliminating pigment pollution, eliminating shear force interference, significantly improving color consistency between complex components, and adapting to intelligent manufacturing.

This utility model relates to a fabric inspection table, including a support, a worktable mounted on the support, a lamp body for detecting fabric color, a first roller to keep the fabric always in contact with the worktable, a take-up roller, an unwinding roller, a leveling component for leveling the fabric on the worktable, and an intermittent device for intermittently moving the fabric. The intermittent device is mounted on the support, and its active end is connected to the unwinding roller. The first roller is mounted on both sides of the worktable and is tangent to the top surface of the worktable. The leveling component moves along the worktable. The light source of the lamp body faces the worktable. The take-up roller and the unwinding roller are respectively mounted on both sides of the support. This invention solves the problem that fabric inspection often involves moving the fabric at a constant speed using two sets of rollers, detecting color differences during the fabric's movement. However, the movement of the fabric makes it difficult for workers to accurately capture the location of color differences, leading to inaccurate observations. Furthermore, the fabric needs to be marked with cut sections and leveled during movement.

The invention discloses a pier column preformed hole flow state plugging method, and relates to the technical field of pier column preformed hole flow state plugging. According to the technical scheme, the method comprises the steps that S1, a horn mouth mold and a fixing tool of the horn mouth mold are manufactured; s2, the preformed hole is cleaned and wetted; s3, a horn mouth mold is installed; s4, designing a mixing proportion of a color mixing grouting material and manufacturing a color plate; s5, mixing a color mixing grouting material; s6, filling a color mixing grouting material; and S7, removing the mold, polishing and flattening, and maintaining. The method has the beneficial effects that the scheme can efficiently complete plugging of various preformed holes, compared with dry and hard mud jacking plugging, plugging by utilizing the fluidity of the color-mixing grouting material is more compact, the color-mixing grouting material has higher strength and micro-expansion characteristics, shrinkage cracks are effectively avoided, and by adding the white Portland cement for color mixing, the plugging effect is better. And the blocked part has no obvious color difference with the pier column, and is not easy to peel off and powder after being polished and flattened.

Food contact materials with a color difference ΔE <20 from the L*a*b* coordinates to a color number starting with "1" of the RAL color chart according to the color model according to EN ISO 11664-4, as determined according to DIN 5033 (1979), based on compositions containing at least one polyester or polystyrene and a colorant consisting of at least one yellow methine dye or at least one yellow quinophthalone dye and at least one ethylene oxide-propylene oxide block copolymer with a central propylene oxide unit between two ethylene oxide units, a molar mass determined from the OH number to be determined according to DIN / ISO 4629, in the range of 5500 to 7500 g / mol, a mass fraction of ethylene oxide units in the range of 45 to 55 wt.% and a flocculation point to be determined according to EN 1890 method B in the range of 70°C to 85°C.

This invention relates to a method for color matching of architectural coatings based on particle swarm optimization (PSO) algorithm. The method includes the following steps: using a standard color swatch and a colorimeter, under the same light intensity, light angle, and sampling distance, calibrating the basic color of a display one by one; saving the architectural coating color designed using the calibrated display as a standard color and displaying the standard color on this display; adjusting to obtain multiple different standard colorant ratios; iteratively searching for the optimal standard colorant ratio using the PSO algorithm; and outputting the optimal standard colorant ratio. This invention eliminates the industry's reliance on manual experience in color matching, achieving controllable results for the final product without human intervention; making the experimental process highly directional, quickly obtaining satisfactory results with a small number of iterations and very few samples per iteration; achieving color matching results with much higher accuracy than manual color matching; and enabling large-scale application.

The utility model discloses a PET bottle sorting device which comprises a conveying mechanism, a detection mechanism and a sorting mechanism located on one side of the detection mechanism are arranged on the conveying mechanism, the conveying mechanism comprises a working table and a conveying belt running on the inner side of the working table, an extension plate is further fixed to the inner side of the working table, guide plates are arranged on the two sides of the extension plate, and the guide plates are arranged on the conveying mechanism. The detection mechanism comprises a colorimeter and a controller in coupling connection with the colorimeter, the colorimeter is located above the conveying belt and used for detecting the PET bottles conveyed on the conveying belt, detecting the PET bottles with specified colors and transmitting electric signals to the controller, and the colorimeter is fixed to the bridge plate. According to the PET bottle sorting device, the colorimeter is matched with the controller and the servo motor, after the colorimeter identifies the PET bottles with the specified colors, electric signals are transmitted to the controller in real time, the sorting isolation plate is driven to move to the specified position, the PET bottles with the specified colors are sorted and discharged, and automatic screening of the PET bottles is achieved.

This invention discloses a method for deriving a color registration control error model during steady-speed printing in a mechanical shaft gravure printing machine. Based on the mathematical model, the color registration control method of this invention employs a recursive iterative analysis method for control design. The control method of this invention not only theoretically ensures zero registration error, but also features fast response speed, effectively eliminates color differences throughout the system, and improves registration accuracy, making it highly suitable for widespread use in steady-speed printing processes on mechanical shaft gravure printing machines.

The present invention relates to the technical field of color difference meters, and discloses a color difference meter for automobile interior decoration printing detection. The device includes an operation table surface, an automobile interior decoration main body, a color difference meter main body, and side frames symmetrically and fixedly connected to both sides of the top of the operation table surface. A linear electric actuator is symmetrically and fixedly installed in the middle of the top of the side frames, and further includes: a side block is fixedly connected to the sleeve part of the linear electric actuator, the same cross plate is fixedly connected between the two side blocks, a detection assembly is arranged below the cross plate, a pressing assembly is arranged inside the side frames, and a detection end is fixedly installed at the bottom end of the color difference meter main body; the detection assembly includes symmetrically arranged fixing plates, a linear guide rail is fixedly installed between the two fixing plates, and a moving seat is fixedly installed at the output end of the linear guide rail, solving the problem that when dealing with automobile interior decorations with curved surfaces, the color difference meter is not convenient to fit and contact with the interior decoration board well, reducing the detection quality and detection efficiency.

The utility model belongs to the field of mixing of color master batches and resin, and particularly relates to equipment for improving the dispersity of the color master batches in matrix resin, which comprises a machine body, and a heating and conveying mechanism is arranged at the bottom of the machine body; the heating and conveying mechanism comprises a water storage tank, the water storage tank is placed at the bottom of the machine body, two heaters are fixedly installed in the water storage tank, and the heating ends of the heaters extend to the inner wall of the water storage tank; by arranging the heating conveying mechanism, the machine body can be heated, and the situation that when the machine body is used in a low-temperature environment, due to the influence of the temperature, mixing of color master batch and a resin carrier is affected, and color difference occurs when the color master batch and resin are mixed can be avoided, so that the temperature of the machine body is increased, and the machine body is prevented from being affected by the low temperature; furthermore, color difference is avoided when the color master batch and the resin are mixed, and the aim of preventing the machine body from being influenced by temperature is achieved.

The utility model belongs to the field of printed matter color difference detection, and particularly relates to a book printing color difference detection device which comprises a workbench, a limiting groove is formed in one end of the workbench, a partition baffle is installed at one end of the limiting groove, and a control plate shaft handle is installed at one end of the partition baffle. According to the book printing color difference detection device provided by the utility model, a book needing to be detected is placed on the left side of the separation baffle, the speed of the first motor is started and controlled to drive the first rotating and abutting shaft to rotate on the workbench, and the lowest book is pushed to the right side of the separation baffle; then a side position motor is started to drive a control block screw rod to rotate, so that a moving block pushes the book to move towards one side of a page turning plate on a slide way, further contacts the page turning plate, is randomly turned over by the page turning plate and pushed to the lower end of a color difference detector for detection work, and is pushed to a book guide plate by the moving block to be guided out and collected if no abnormity exists after detection; and the integrated effect of detection and collection work of the device is improved.

The utility model relates to a paint surface color difference detection device which comprises a movable assembly and a detection assembly, the movable assembly is used for bearing the detection assembly and transporting the detection assembly; the detection assembly is located at the tail end of the movable assembly and comprises a mounting frame, a colorimeter and a range finder; the mounting frame is used for bearing the colorimeter and the range finder and is connected with the movable assembly; the colorimeter is positioned in the center of the mounting frame and is used for detecting the paint surface of the sampling point; the range finder is positioned on the mounting frame and around the colorimeter and is used for detecting the position relationship between the sampling point and the colorimeter; firstly, as the movable assembly and the detection assembly are combined, the movable assembly is utilized to move the detection assembly to an approximate area of a sampling point, then the detection assembly is used for accurately positioning the sampling point, and then the detection assembly is driven to an accurate position according to accurate positioning information, so that the detection assembly is tightly attached to the sampling point; and rapid and accurate detection of the paint surface color difference is realized.

The application provides a multi-sensor fusion cloth online defect identification method and system, and relates to the technical field of cloth defect identification. The method comprises the following steps: acquiring specified graphs of the front and back surfaces of the current detection cloth; performing space-time alignment on the data in the specified graphs to obtain multi-source data after alignment; extracting key information from the multi-source data; determining the fusion weight of each data in the key information according to the cloth type parameter of the current detection cloth; performing weighted fusion on the data in the key information according to the fusion weight to generate a fusion feature vector; comparing the fusion feature vector with the fusion feature of normal cloth to determine and locate the color difference area. The method of the application aims at the cloth manufacturing production line and aims to solve the technical problem of color difference defect detection of cloth with double-sidedness, light transmission and after finishing process, and realizes more accurate identification and positioning of color difference defects of complex cloth.

The present invention relates to the technical field of operating tables, and discloses an operating table for paint performance testing, the device comprising a support table, a colorimeter body, a sample body and a support back plate fixedly mounted on one side of the top back of the support table, the top of the support back plate being fixedly connected to a top plate, and further comprising: a detection assembly being provided at the bottom of the top plate, and a positioning assembly being provided at the top of the connecting plate; the positioning assembly comprising a placement box fixedly mounted on the connecting plate, a connecting sleeve being fixedly mounted on a side of the placement box close to the support back plate, a spring three being fixedly connected inside the connecting sleeve, and an arc-shaped protrusion being fixedly connected to one side of the spring three; the detection assembly comprising a lifting unit and a docking unit, which solves the problems of inconvenience in performing color difference detection on a large number of paint spray samples, low detection efficiency, inconvenience in positioning the paint spray samples during detection, and reduced accuracy of paint performance detection.

The application discloses a kind of based on convolutional neural network's car paint effect pigment identification method, comprising the following steps: to several same specifications sheet metal's paint sample is carried out image acquisition, and the image according to the paint effect of this image sheet metal is ranked by grade;Based on convolutional neural network to the image of each grade ranking in the same specification sheet metal is extracted, and its specific steps of extraction are: after the image of each grade ranking in the same specification sheet metal is convolved with convolution kernel m1, to obtain the next layer more reaction car paint pigment chromatism convolution graph M1.The present application can automatically identify the paint effect of subsequent production of the same specification by paint effect judgment model, and since the identification method is anchored to the traditional paint effect evaluation, so that the same production line will not cause the problem of inconsistent paint display effect due to the abrupt change of evaluation method system.

To provide a composite sheet by which a wet state caused by urine leakage or the like can be determined visually and easily when used for clothing, sheet or the like.SOLUTION: A composite sheet 1 according to the present invention comprises a surface layer on which a covering sheet 3, which is made of a material capable of absorbing water and colored in a single color same as a display sheet 2 colored in a predetermined single color or an unbleached color on a front side of the display sheet 2, is laminated, where the color of the display sheet 2 is a dark color having the color difference ΔE of 11 or more for the color of the covering sheet 3 having the water absorption ratio 0%, and the surface layer is a dark color in which a color expressed in the region of water absorption ratio 80% or more has the color difference ΔE of 1.5 or more for a color expressed in the region of water absorption ratio 0%.SELECTED DRAWING: Figure 1

The invention discloses a color difference detection device for jig dyeing of new material cloth, and relates to the technical field of cloth detection. The color difference detection device for jig dyeing of the new material cloth comprises a color difference detection bin, a power rod driven by a linear motor is assembled in the color difference detection bin, a rotating disc driven by a servo motor is assembled at the bottom of the power rod, and an optical detection head is assembled in the rotating disc. And a dust extraction pipeline connected with an air pump is assembled at the top of the color difference detection bin. According to the color difference detection device for jig dyeing of the new material cloth, to-be-detected cloth is moved into the color difference detection bin through a corresponding conveying mechanism, a servo motor is driven, a power rod is driven to move downwards, and a pressing rod, a torsional spring block, a first stress rod, a connecting rod, a hinge rod, a sliding plate, a first elastic telescopic block, a first positioning plate and a rotating roller are matched; in this way, cloth possibly wrinkled can be straightened during chromatic aberration detection, and the detection precision of the device is improved.

The application discloses a method and system for color correction of printed textiles, which links multiple differences in the color correction process and only corrects the formula concentration, reduces errors and improves color correction accuracy. Different color correction formulas are used according to the difference between the actual dyeing sample and the standard color sample, and the application range is wider. The technical scheme comprises the following steps: 1) obtaining an initial formula based on the color data of the standard color sample; 2) dyeing a blank sample according to the initial formula to obtain an actual dyeing sample, measuring the color data and calculating the color difference value between the actual dyeing sample and the standard color sample; 3) comparing the actual dyeing sample color difference value with a threshold value, if not satisfied, obtaining a formula according to the color data of the actual dyeing sample and calculating a correction coefficient; 4) obtaining a color correction formula through the correction coefficient, dyeing a blank sample, obtaining an actual dyeing sample, measuring the color data and calculating the color difference value between the actual dyeing sample and the standard color sample; 5) repeating steps 3) to 4) until a color correction formula satisfying the color difference threshold value is obtained.

The utility model provides a color difference detection device for packaging material printing, which comprises a bottom plate, the top of the bottom plate is provided with a placing table, the top of the placing table is provided with a limiting assembly and a cleaning assembly in a limiting and sliding manner along the vertical direction, and the limiting assembly is in sliding transmission fit with the cleaning assembly. A driving mechanism for driving the limiting assembly and the cleaning assembly to slide is arranged on the placing table; two supporting frames are symmetrically and fixedly arranged on the top of the bottom plate, and a color difference detector is connected between the two supporting frames through an adjusting mechanism. The driving mechanism can drive the limiting assembly and the cleaning assembly to move downwards, and the limiting assembly makes contact with the paper in advance, so that the paper is limited. Afterwards, the cleaning assembly can clean the surface of the fixed paper, fixing and cleaning of the paper in the process are completed at a time, the position of the paper does not need to be adjusted again, operation is easy, the automation degree is high, and therefore the workload of workers is reduced while operation is simplified.

Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.