Full-automatic color mixer
The fully automatic color mixing machine with modular design achieves precise automatic conversion and mixing of RGB to CMYK colors, solving the problems of large size and insufficient precision of traditional color mixing equipment, and is suitable for home users and small studios.
Patent Information
- Application Number
- CN202511829493.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-02-27
AI Technical Summary
Existing color mixing equipment is bulky and expensive. Traditional color mixing methods rely on manual experience and lack precision, making it difficult to achieve accurate conversion of RGB to CMYK colors and automated ingredient mixing, which cannot meet the needs of home users and small studios.
The fully automatic color mixing machine adopts a modular design, including a visual control module, a color conversion calculation module, a motor control board, a power drive module, and a color mixing output module. Through automatic conversion and precise calculation of RGB values to CMYK values, the motor control board drives a water pump to extract pigments and mix them in a color mixing tank, thereby achieving automated color mixing.
It achieves accurate conversion of RGB to CMYK colors, and the color adjustment process requires no manual intervention. It is highly accurate and suitable for home users and small studios, reducing the difficulty and cost of operation and meeting the needs of the consumer market.
Smart Images
Figure CN121571041A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of color mixing machines, in particular to a full-automatic color mixing machine. BACKGROUND
[0002] In the field of color management, RGB color system and CMYK color mixing model are two commonly used color representation methods. RGB (red, green, blue) is an additive color model, mainly used for creating colors on electronic display devices, and the value range of each color component is usually from 0 to 255. By combining different intensities of red, green and blue light, almost all visible colors can be generated. CMYK (cyan, magenta, yellow, black) is a subtractive color model, mainly used in printing and pigment mixing processes, which creates colors by subtracting colors from a white background. Cyan, magenta and yellow are the three basic colors, and black is used to increase the depth and contrast of colors. Although both RGB color model and CMYK color mixing model are color mixing systems, they belong to different color spaces and need complex conversion to achieve accurate matching from screen display color to physical pigment color in actual application.
[0003] Currently, the color mixing equipment on the market mainly consists of large industrial color mixing machines. Such equipment is bulky and expensive, which does not meet the needs of household users and small studios. Traditional color mixing methods mainly rely on manual experience for pigment proportioning, which not only wastes a lot of manpower and resources, but also has great deficiencies in the accuracy of color mixing, making it difficult to achieve accurate color reproduction. Especially when converting digital RGB color to physical CMYK pigment, there is a lack of effective automated conversion and dosing means, resulting in a tedious and error-prone color mixing process, which cannot meet the needs of modern artistic creation and precise color matching. SUMMARY
[0004] The present application aims to provide a full-automatic color mixing machine to solve the problems existing in the prior art.
[0005] The present application provides a full-automatic color mixing machine, comprising: A visual control module comprising an integrated touch panel, the touch panel is provided with three scroll bars of red, green and blue and corresponding sliders, and the touch panel is built-in with an RGB conversion user library; A color conversion calculation module connected with the visual control module, the color conversion calculation module normalizes the RGB value to a value in the range of 0-1, calculates the black component K value, and calculates the component values of cyan C, magenta M and yellow Y based on the black component K value, and converts the C, M, Y and K values into percentage form; A motor control board is connected with the color conversion calculation module, and the motor control board is provided with a CMYK conversion system, which calculates the volume of each pigment according to the CMYK percentage value and converts it into weight. A power driving module includes four water pumps corresponding to cyan, magenta, yellow and black respectively, and the four water pumps are connected to the respective pigment barrels through hoses, and the water pumps are connected with the motor control board through wires. A color mixing output module includes a color mixing barrel and a stirring device, and the color mixing barrel is connected with the four water pumps through a conveying pipeline, and the stirring device is arranged in the color mixing barrel.
[0006] Through the above technical scheme, the full-automatic color mixer realizes the full-process automation from RGB color selection to automatic proportioning and mixing of CMYK pigments through the cooperative matching of the visual control module, the color conversion calculation module, the motor control board, the power driving module and the color mixing output module. The user intuitively selects the target color through the scroll bar on the touch panel, and the system automatically completes the color space conversion calculation from RGB to CMYK. The motor control board accurately controls the four water pumps to extract the corresponding weight of cyan, magenta, yellow and black pigments from the respective pigment barrels according to the calculation results, and finally realizes uniform mixing in the color mixing barrel through the stirring device. The whole process does not need manual intervention, significantly improves the accuracy and efficiency of color matching, and solves the technical problems of strong manual dependence and insufficient precision in traditional color matching methods.
[0007] Further, the numerical range of the scroll bar is 0 to 255.
[0008] Further, the calculation formula of the black component K is , wherein is the normalized RGB value; the calculation formula of the cyan component C is , the calculation formula of the magenta component M is , and the calculation formula of the yellow component Y is .
[0009] Further, the hose is made of silica gel material.
[0010] Further, the touch panel is connected with the motor control board through a golden finger interface.
[0011] Further, the stirring device is an electric mixer, which adopts a propeller type or planetary type stirring structure, and the rotating speed range is 100-500 rpm.
[0012] Further, the color mixer further includes a shell made of PETG material by 3D printing, and the shell is a split structure including a base, a side plate and a top cover.
[0013] Further, the touch panel is located at the front right side, the motor control panel is located below the touch panel, the four water pumps and the pigment barrel are located at the rear, and the color mixing barrel is located at the front left side.
[0014] Advantages of the present application: The present application establishes a complete RGB to CMYK color space conversion algorithm system, realizes accurate conversion from digital color to physical pigment, adopts normalization processing, black component calculation, and accurate calculation of cyan, magenta, and yellow components, ensures the accuracy of color conversion, makes the color difference value ΔE of the mixed pigment and the target color less than 3, reaches the precision level that the human eye cannot distinguish, and effectively solves the problem of insufficient precision of traditional manual color matching.
[0015] The present application adopts modular design and fully automatic control process, the user only needs to select the target color on the visual touch panel, the system automatically completes color conversion calculation, pigment volume and weight conversion, water pump extraction control, and mixing and stirring, etc. The whole color matching process does not require professional knowledge and manual intervention, greatly reduces the operation difficulty, saves the labor and time cost, and improves the color matching efficiency.
[0016] The present application adopts miniaturization design, the shell is manufactured by using 3D printing technology, the overall structure is compact, suitable for family users, art lovers and small studios, fills the gap of small civilian color matching equipment in the market, has the advantages of small size, low cost, easy operation and maintenance compared with large industrial color matching machine, and meets the demand of civilian market for precise color matching equipment. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Fig. 1 It is an overall structure schematic diagram of the color matching machine of the present application; Fig. 2 It is a front structure schematic diagram of the color matching machine of the present application; Fig. 3 It is an internal overhead view structure schematic diagram of the color matching machine of the present application. DETAILED DESCRIPTION
[0019] The application will be described in detail below with reference to the drawings and specific embodiments. It should be noted that in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be implemented by those skilled in the art for some known technologies; and the drawings are only used to describe the embodiments in more detail, and are not intended to specifically limit the application.
[0020] It should be noted that in the specification, "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the described embodiment can include a specific feature, structure or property, but not necessarily every embodiment includes the specific feature, structure or property. In addition, when a specific feature, structure or property is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to implement such a feature, structure or property in combination with other embodiments (whether or not explicitly described).
[0021] Generally, the terms can be understood at least in part from the context of their use. For example, depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures, or characteristics, in the plural, that are collectively equivalent in the singular. In addition, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but can instead, depending on the context, allow for the existence of other factors not necessarily explicitly described.
[0022] Reference is made to Figs. 1 to 3 shown The application provides a full-automatic color mixing machine, which realizes automatic and accurate proportioning and mixing of pigments through accurate conversion of RGB to CMYK color space. The specific embodiments of the application will be described in detail below in combination with the technical solutions. The full-automatic color mixing machine of the application adopts modular design and is mainly composed of four parts: a visual control module, a color conversion calculation module, a power driving module and a color mixing output module, and the modules work cooperatively through data transmission and mechanical connection.
[0023] The visual control module is located at the front right side of the device and adopts an integrated touch panel design, which has the dual functions of a main control panel and a human-computer interaction interface. The user can intuitively select the target color to be obtained by adjusting the position of the RGB scroll bar adjustment slider on the panel, and the numerical range of the scroll bar is 0 to 255, which respectively corresponds to the intensity values of the red (R), green (G) and blue (B) color channels. The touch panel displays the RGB values and preview effect of the currently selected color in real time, so that the user can clearly understand the final effect before color mixing. The visual panel has an embedded RGB conversion user library, which is immediately started by the panel after the user completes color selection and confirmation.
[0024] The color conversion calculation module is the core technical part of the present application, which realizes the accurate conversion from the RGB additive color model to the CMYK subtractive color model. The conversion process first normalizes the input RGB value, mapping the original 0-255 integer range to the standardized floating-point number range of 0-1, and the specific calculation formula is: , , , wherein R, G, B are the original RGB values selected by the user, 、 、 are the normalized RGB values. Next, the black component (K) in the CMYK color model is calculated, which represents the black component that needs to be added in the pigment mixture, and the calculation is based on the maximum value in the RGB three channels, and the calculation formula is: , wherein represents the maximum value of the normalized RGB three components, and K is the normalized value of the black component. After obtaining the black component K, the system further calculates the cyan (C), magenta (M) and yellow (Y) three color components, and the calculation of these three components needs to consider the influence of the black component on the overall color, and the calculation formulas are respectively: , , , wherein C, M, Y are the normalized values of cyan, magenta and yellow respectively, and when K=1 (i.e. pure black), C=M=Y=0. In order to facilitate subsequent pigment volume calculation and control, the system converts the calculated normalized CMYK value into percentage form, and the conversion formula is: , , , , wherein 、 、 、 respectively represent the percentage values of each color component. These percentage values are then transmitted to the motor control board located below through the main board.
[0025] After receiving the CMYK percentage data, the motor control board starts the CMYK conversion system, which calculates the specific volume of each pigment according to the preset total pigment volume requirement and the percentage of each color component. Assuming that the user needs a total pigment volume of milliliters, the volume calculation formula of each color pigment is: , , , , wherein 、 、 、 The volume required for cyan, magenta, yellow, and black pigments, respectively. Considering the density characteristics of the pigments, the system further converts the volume to weight to improve accuracy, and the conversion formula is: , where m is the weight of the pigment, is the density of the pigment (the density of standard water-based pigments is about 1.2-1.5 g / mL), and V is the volume of the pigment. The motor control board generates corresponding control signals based on the calculated weight values of each pigment and transmits them to the four independent water pumps in the rear through wires.
[0026] The power drive module consists of four precision water pumps, corresponding to cyan, magenta, yellow, and black standard water-based pigments, respectively. Each water pump is connected to its respective pigment barrel through a silicone hose. The silicone hose has good flexibility, corrosion resistance, and biocompatibility, ensuring that the pigments are not contaminated and flow smoothly during transportation. After receiving the control signals from the motor control board, the water pump accurately controls the extraction amount based on signal strength and duration, extracting the calculated weight of pigment from the pigment barrel. The four water pumps work in a sequential mode, sequentially completing the extraction task of each color pigment. The extraction rate can be self-adaptively adjusted according to the viscosity of the pigment, with a typical extraction rate of 5-15 mL / min. During the extraction process, the system monitors the working state of each water pump in real time to ensure the accuracy and consistency of the extraction amount.
[0027] The color mixing output module is located on the left side of the front of the device and mainly consists of a color mixing barrel and a stirring device. The color mixing barrel is made of transparent or translucent material, which is convenient for users to observe the color mixing process and the final effect. The pigments extracted by the four water pumps are collected through their respective delivery hoses and then injected into the color mixing barrel in sequence. After the pigments enter the color mixing barrel, the built-in electric stirrer automatically starts. The stirrer adopts a propeller or planetary stirring structure, with a adjustable speed range of 100-500 rpm. The stirring time is automatically calculated based on the total amount of pigment, with a typical stirring time of 30-120 seconds. The stirring device ensures that the four pigments are fully mixed and evenly distributed, ultimately forming the target color required by the user. The entire color mixing process is fully automated and does not require human intervention, greatly improving the accuracy and efficiency of color matching.
[0028] The connection method of the present application adopts a hierarchical connection architecture: the uppermost layer is the user operation layer, which connects the computer (optional) to the main control touch panel through a USB data line, realizing remote control or parameter setting; the middle layer is the control layer, which inserts and connects the motor control board below through the gold finger interface, realizing fast data transmission and accurate instruction delivery; the bottom layer is the execution layer, which connects four independent water pumps through four groups of power lines and signal lines, and each water pump is connected to the pigment barrel behind and the color mixing barrel in front through a silicone hose. This hierarchical connection method not only simplifies the system structure, but also facilitates modular maintenance and functional expansion.
[0029] The shell structure of the present application is manufactured by 3D printing technology, and the printing material is selected from PETG (polyethylene terephthalate-1, 4-cyclohexane dimethyl ester) thermoplastic plastic. The material has excellent mechanical strength, chemical corrosion resistance and forming stability, and is suitable for making precise instrument shell. The shell is designed in a split type, the main part includes a base, a side plate and a top cover, and each part is connected by buckles or bolts, which is convenient for assembly and disassembly and maintenance. The inside of the shell is provided with a special module installation position and a line layout groove, which ensures the accurate positioning of each functional module and the neat layout of the line. The front right side is provided with a touch panel installation window, the front left side is provided with a color mixing barrel observation window and a material taking port, and the rear is provided with a pigment barrel installation groove and a maintenance door, and the overall design takes into account the functionality and aesthetics.
[0030] Embodiment In order to more clearly illustrate the technical solutions and implementation effects of the present application, a specific embodiment is provided. In this embodiment, the user hopes to prepare a specific purple pigment for artistic creation by using the full-automatic color mixer of the present application. Purple color can be obtained by mixing red and blue in the RGB color space, and the specific operation process is as follows.
[0031] The user first opens the visual touch panel located at the front right side of the device, and the panel displays an initial interface, including an RGB scroll bar control area, a color preview area and a function button area. According to the user's needs, the user adjusts the slider to the 180 position on the red (R) channel scroll bar, adjusts the slider to the 50 position on the green (G) channel scroll bar, and adjusts the slider to the 200 position on the blue (B) channel scroll bar. At this time, the color preview area displays a medium-brightness purple color in real time, and the RGB value is (180, 50, 200). After the user confirms that the color meets the expectations, the user clicks the "start color mixing" button, and the system starts the color conversion and ingredient preparation process.
[0032] After the main control touch panel receives the user's instruction, it immediately calls the built-in RGB conversion user library to start the color space conversion calculation. First, perform normalization processing to convert the RGB value to a standardized value: , , . Then calculate the black component K according to the formula , since , therefore . Then calculate the cyan, magenta and yellow components respectively, the cyan component , the magenta component , and the yellow component . Finally, convert these normalized values to percentage form:
[0033] , , , The CMYK data is transmitted to the motor control board below through the golden finger interface of the main board.
[0034] After receiving the data, the CMYK conversion system of the motor control board starts to calculate the specific volume of each color pigment, combined with the user's preset total pigment requirement (set to 100 mL in this embodiment). Cyan pigment volume mL, magenta pigment volume mL, yellow pigment volume mL, black pigment volume mL. Considering that the density of standard watercolor pigment is about 1.3 g / mL, the system further calculates the weight of each pigment: cyan pigment weight g, magenta pigment weight g, yellow pigment weight g, black pigment weight g. The motor control board generates corresponding PWM control signals according to these weight data and transmits them to the four water pumps through power lines and signal lines.
[0035] The four water pumps start in the preset working order. First, the cyan pigment water pump receives the control signal and starts working, extracting 12.87 g of cyan pigment from the rear cyan pigment barrel through the connected silicone hose. The extraction process lasts about 47 seconds (calculated at a extraction rate of 10 mL / min), and after the extraction is completed, the water pump automatically stops and injects the pigment into the front left mixing barrel through the delivery pipeline. Then the magenta pigment water pump starts, extracts 97.50 g of magenta pigment from the magenta pigment barrel in the same way, and the process lasts about 6 minutes. After the extraction is completed, the pigment is also injected into the mixing barrel. Since the yellow component calculation result is 0, the yellow pigment water pump remains in standby state and does not extract. Then the black pigment water pump starts, extracts 28.08 g of black pigment from the black pigment barrel, and the extraction time is about 1 minute and 47 seconds. After the extraction is completed, it is injected into the mixing barrel. At this point, the quantitative extraction and injection process of the four kinds of pigments is completed, and the whole process takes about 8 minutes, during which the user does not need to perform any operation.
[0036] When all the pigments are injected, the electric mixer in the mixing barrel is automatically started, the rotating speed of the mixer is set to 300 rpm, and the stirring time is automatically set to 60 seconds according to the total amount of 100 mL of pigments. During the stirring process, the three pigments of cyan, magenta and black are fully mixed in the barrel. Since the mixing barrel is made of transparent material, the user can clearly observe the whole process of the pigments gradually mixing into uniform purple color from the layered state. After the stirring is completed, the mixer is automatically stopped, and the mixing barrel presents a uniform purple pigment, which is highly consistent with the target color displayed in the preview area of the touch panel. The user pours the prepared purple pigment into a self-provided container through the discharge port at the bottom of the mixing barrel, and completes the whole color mixing process. The purple pigment prepared in this embodiment is detected by a color difference meter, and the color difference value ΔE of the target RGB (180, 50, 200) color is less than 3, which reaches the precision level that the human eye cannot distinguish, fully verifying the excellent performance of the full-automatic color mixer in the color conversion accuracy and pigment ratio accuracy. The whole operation process is simple and fast, and does not require professional color mixing knowledge, which is suitable for family users, art lovers and small studios, effectively solving the problems of large size, complex operation and insufficient precision of traditional color mixers, and realizing the color mixing function of miniaturization, automation and precision.
[0037] The present application encompasses any substitutions, modifications, equivalent methods and solutions made to the essence and scope of the present application. In order to make the public have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be fully understood without these details by those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.
[0038] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.
Claims
1. A fully automatic color mixing machine, characterized in that, include: The visual control module includes an integrated touch panel, which has three scroll bars (red, green, and blue) and corresponding sliders, and the touch panel has a built-in RGB conversion user library. The color conversion calculation module is connected to the visualization control module. The color conversion calculation module normalizes RGB values to values in the range of 0-1, calculates the black component K value, and calculates the cyan C, magenta M, and yellow Y component values based on the black component K value, and converts the C, M, Y, and K values into percentage form. A motor control board is connected to the color conversion calculation module. The motor control board is equipped with a CMYK conversion system, which calculates the volume of each pigment based on the CMYK percentage value and converts it into weight. The power drive module includes four water pumps corresponding to cyan, magenta, yellow, and black, respectively. The four water pumps are connected to their respective paint buckets via hoses, and the water pumps are connected to the motor control board via wires. The color mixing output module includes a color mixing tank and a stirring device. The color mixing tank is connected to the four water pumps through a delivery pipe, and the stirring device is located inside the color mixing tank.
2. The fully automatic color mixing machine according to claim 1, characterized in that, The value range of the scroll bar is 0 to 255.
3. The fully automatic color mixing machine according to claim 1, characterized in that, The formula for calculating the black component K is as follows: ,in The values are the normalized RGB values; the formula for calculating the cyan component C is: The formula for calculating the magenta component M is as follows: The formula for calculating the yellow component Y is as follows: .
4. The fully automatic color mixing machine according to claim 1, characterized in that, The hose is made of silicone.
5. The fully automatic color mixing machine according to claim 1, characterized in that, The touch panel is inserted into and connected to the motor control board via a gold finger interface.
6. The fully automatic color mixing machine according to claim 1, characterized in that, The stirring device is an electric stirrer, which adopts a propeller-type or planetary stirring structure with a speed range of 100-500 rpm.
7. The fully automatic color mixing machine according to claim 1, characterized in that, It also includes a housing made of PETG material by 3D printing. The housing has a split structure, including a base, side panels and a top cover.
8. The fully automatic color mixing machine according to claim 1, characterized in that, The touch panel is located on the front right side, the motor control board is located below the touch panel, the four water pumps and the pigment bucket are located at the rear, and the color mixing bucket is located on the front left side.